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Difference From v0.17.0 To v0.16.0

2024-03-06
15:02
Increase version to 0.18.0-dev to begin next development cycle
... (check-in: 51c141a192 user: stern tags: trunk)
2024-03-04
17:08
Version 0.17.0 ... (check-in: c863ee5f61 user: stern tags: trunk, release, v0.17.0)
13:47
Adapt to sx changes; add SPDX license identifiers ... (check-in: 5485ba3ce3 user: stern tags: trunk)
2023-12-28
16:41
Fix sxn code that removed role-based customization, esp. for an additional action if role is "tag" ... (check-in: e721174596 user: t73fde tags: release-0.16)
2023-11-30
18:10
Increase version to 0.17.0-dev to begin next development cycle ... (check-in: 9d654c5606 user: stern tags: trunk)
16:08
Version 0.16.0 ... (check-in: a5afffaf5f user: stern tags: trunk, release, v0.16.0)
2023-11-29
16:53
Add predefined role zettel ... (check-in: 514e400b28 user: stern tags: trunk)

Changes to .fossil-settings/ignore-glob.

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bin/*
releases/*



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bin/*
releases/*
parser/pikchr/*.out

Changes to Makefile.

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## Copyright (c) 2020-present Detlef Stern
##
## This file is part of Zettelstore.
##
## Zettelstore is licensed under the latest version of the EUPL (European Union
## Public License). Please see file LICENSE.txt for your rights and obligations
## under this license.

.PHONY:  check relcheck api version build release clean

check:
	go run tools/check/check.go

relcheck:
	go run tools/check/check.go -r

api:
	go run tools/testapi/testapi.go

version:
	@echo $(shell go run tools/build/build.go version)

build:
	go run tools/build/build.go build

release:
	go run tools/build/build.go release

clean:
	go run tools/clean/clean.go









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## Copyright (c) 2020-present Detlef Stern
##
## This file is part of Zettelstore.
##
## Zettelstore is licensed under the latest version of the EUPL (European Union
## Public License). Please see file LICENSE.txt for your rights and obligations
## under this license.

.PHONY:  check relcheck api build release clean

check:
	go run tools/build.go check

relcheck:
	go run tools/build.go relcheck

api:
	go run tools/build.go testapi

version:
	@echo $(shell go run tools/build.go version)

build:
	go run tools/build.go build

release:
	go run tools/build.go release

clean:
	go run tools/build.go clean

Changes to VERSION.

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0.17.0
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0.16.0

Changes to ast/ast.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package ast provides the abstract syntax tree for parsed zettel content.
package ast

import (
	"net/url"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package ast provides the abstract syntax tree for parsed zettel content.
package ast

import (
	"net/url"

Changes to ast/block.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package ast

import "zettelstore.de/client.fossil/attrs"

// Definition of Block nodes.








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package ast

import "zettelstore.de/client.fossil/attrs"

// Definition of Block nodes.

Changes to ast/inline.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package ast

import (
	"unicode/utf8"









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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package ast

import (
	"unicode/utf8"

Changes to ast/ref.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package ast

import (
	"net/url"
	"strings"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/z/zettel/id"
)

// QueryPrefix is the prefix that denotes a query expression.
const QueryPrefix = api.QueryPrefix

// ParseReference parses a string and returns a reference.
func ParseReference(s string) *Reference {
	if invalidReference(s) {
		return &Reference{URL: nil, Value: s, State: RefStateInvalid}
	}
	if strings.HasPrefix(s, QueryPrefix) {








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package ast

import (
	"net/url"
	"strings"


	"zettelstore.de/z/zettel/id"
)

// QueryPrefix is the prefix that denotes a query expression.
const QueryPrefix = "query:"

// ParseReference parses a string and returns a reference.
func ParseReference(s string) *Reference {
	if invalidReference(s) {
		return &Reference{URL: nil, Value: s, State: RefStateInvalid}
	}
	if strings.HasPrefix(s, QueryPrefix) {

Changes to ast/ref_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package ast_test

import (
	"testing"









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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package ast_test

import (
	"testing"

Changes to ast/walk.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package ast

// Visitor is a visitor for walking the AST.
type Visitor interface {
	Visit(node Node) Visitor








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package ast

// Visitor is a visitor for walking the AST.
type Visitor interface {
	Visit(node Node) Visitor

Changes to ast/walk_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package ast_test

import (
	"testing"









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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package ast_test

import (
	"testing"

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				Ref:     &ast.Reference{Value: "http://zettelstore.de"},
				Inlines: ast.CreateInlineSliceFromWords("URL", "text."),
			},
		),
	}
	v := benchVisitor{}
	b.ResetTimer()
	for range b.N {
		ast.Walk(&v, &root)
	}
}

type benchVisitor struct{}

func (bv *benchVisitor) Visit(ast.Node) ast.Visitor { return bv }







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				Ref:     &ast.Reference{Value: "http://zettelstore.de"},
				Inlines: ast.CreateInlineSliceFromWords("URL", "text."),
			},
		),
	}
	v := benchVisitor{}
	b.ResetTimer()
	for n := 0; n < b.N; n++ {
		ast.Walk(&v, &root)
	}
}

type benchVisitor struct{}

func (bv *benchVisitor) Visit(ast.Node) ast.Visitor { return bv }

Changes to auth/auth.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

// Package auth provides services for authentification / authorization.
package auth

import (
	"time"








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package auth provides services for authentification / authorization.
package auth

import (
	"time"

Changes to auth/cred/cred.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package cred provides some function for handling credentials.
package cred

import (
	"bytes"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package cred provides some function for handling credentials.
package cred

import (
	"bytes"

Changes to auth/impl/digest.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2023-present Detlef Stern
//-----------------------------------------------------------------------------

package impl

import (
	"bytes"
	"crypto"
	"crypto/hmac"
	"encoding/base64"

	"zettelstore.de/sx.fossil"
	"zettelstore.de/sx.fossil/sxreader"
)

var encoding = base64.RawURLEncoding

const digestAlg = crypto.SHA384

func sign(claim sx.Object, secret []byte) ([]byte, error) {
	var buf bytes.Buffer
	_, err := sx.Print(&buf, claim)
	if err != nil {
		return nil, err
	}
	token := make([]byte, encoding.EncodedLen(buf.Len()))
	encoding.Encode(token, buf.Bytes())

	digest := hmac.New(digestAlg.New, secret)
	_, err = digest.Write(buf.Bytes())
	if err != nil {
		return nil, err
	}
	dig := digest.Sum(nil)
	encDig := make([]byte, encoding.EncodedLen(len(dig)))
	encoding.Encode(encDig, dig)









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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package impl

import (
	"bytes"
	"crypto"
	"crypto/hmac"
	"encoding/base64"

	"zettelstore.de/sx.fossil"
	"zettelstore.de/sx.fossil/sxreader"
)

var encoding = base64.RawURLEncoding

const digestAlg = crypto.SHA384

func sign(claim sx.Object, secret []byte) ([]byte, error) {
	var buf bytes.Buffer
	sx.Print(&buf, claim)



	token := make([]byte, encoding.EncodedLen(buf.Len()))
	encoding.Encode(token, buf.Bytes())

	digest := hmac.New(digestAlg.New, secret)
	_, err := digest.Write(buf.Bytes())
	if err != nil {
		return nil, err
	}
	dig := digest.Sum(nil)
	encDig := make([]byte, encoding.EncodedLen(len(dig)))
	encoding.Encode(encDig, dig)

Changes to auth/impl/impl.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

// Package impl provides services for authentification / authorization.
package impl

import (
	"errors"








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package impl provides services for authentification / authorization.
package impl

import (
	"errors"
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		return ErrTokenExpired
	}
	zid := id.Zid(vals[4].(sx.Int64))
	if !zid.IsValid() {
		return ErrNoZid
	}

	tokenData.Ident = string(ident)
	tokenData.Issued = issued
	tokenData.Now = now
	tokenData.Expires = expires
	tokenData.Zid = zid
	return nil
}








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		return ErrTokenExpired
	}
	zid := id.Zid(vals[4].(sx.Int64))
	if !zid.IsValid() {
		return ErrNoZid
	}

	tokenData.Ident = ident.String()
	tokenData.Issued = issued
	tokenData.Now = now
	tokenData.Expires = expires
	tokenData.Zid = zid
	return nil
}

Changes to auth/policy/anon.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package policy

import (
	"zettelstore.de/z/auth"
	"zettelstore.de/z/config"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package policy

import (
	"zettelstore.de/z/auth"
	"zettelstore.de/z/config"

Changes to auth/policy/box.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package policy

import (
	"context"









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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package policy

import (
	"context"

Changes to auth/policy/default.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package policy

import (
	"zettelstore.de/client.fossil/api"
	"zettelstore.de/z/auth"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package policy

import (
	"zettelstore.de/client.fossil/api"
	"zettelstore.de/z/auth"

Changes to auth/policy/owner.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package policy

import (
	"zettelstore.de/client.fossil/api"
	"zettelstore.de/z/auth"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package policy

import (
	"zettelstore.de/client.fossil/api"
	"zettelstore.de/z/auth"

Changes to auth/policy/policy.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package policy provides some interfaces and implementation for authorizsation policies.
package policy

import (
	"zettelstore.de/z/auth"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package policy provides some interfaces and implementation for authorizsation policies.
package policy

import (
	"zettelstore.de/z/auth"

Changes to auth/policy/policy_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package policy

import (
	"fmt"
	"testing"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package policy

import (
	"fmt"
	"testing"

Changes to auth/policy/readonly.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package policy

import "zettelstore.de/z/zettel/meta"

type roPolicy struct{}








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package policy

import "zettelstore.de/z/zettel/meta"

type roPolicy struct{}

Changes to box/box.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package box provides a generic interface to zettel boxes.
package box

import (
	"context"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package box provides a generic interface to zettel boxes.
package box

import (
	"context"

Changes to box/compbox/compbox.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package compbox provides zettel that have computed content.
package compbox

import (
	"context"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package compbox provides zettel that have computed content.
package compbox

import (
	"context"

Changes to box/compbox/config.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package compbox

import (
	"bytes"









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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package compbox

import (
	"bytes"

Changes to box/compbox/keys.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package compbox

import (
	"bytes"
	"fmt"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package compbox

import (
	"bytes"
	"fmt"

Changes to box/compbox/log.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package compbox

import (
	"bytes"









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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package compbox

import (
	"bytes"

Changes to box/compbox/manager.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package compbox

import (
	"bytes"
	"fmt"








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package compbox

import (
	"bytes"
	"fmt"

Changes to box/compbox/parser.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package compbox

import (
	"bytes"
	"fmt"








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package compbox

import (
	"bytes"
	"fmt"

Changes to box/compbox/version.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package compbox

import (
	"zettelstore.de/client.fossil/api"
	"zettelstore.de/z/kernel"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package compbox

import (
	"zettelstore.de/client.fossil/api"
	"zettelstore.de/z/kernel"

Changes to box/constbox/base.css.

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/*-----------------------------------------------------------------------------
 * Copyright (c) 2020-present Detlef Stern
 *
 * This file is part of Zettelstore.
 *
 * Zettelstore is licensed under the latest version of the EUPL (European Union
 * Public License). Please see file LICENSE.txt for your rights and obligations
 * under this license.
 *
 * SPDX-License-Identifier: EUPL-1.2
 * SPDX-FileCopyrightText: 2020-present Detlef Stern
 *-----------------------------------------------------------------------------
 */

*,*::before,*::after {
    box-sizing: border-box;
  }
  html {
    font-size: 1rem;
    font-family: serif;
    scroll-behavior: smooth;
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*,*::before,*::after {
    box-sizing: border-box;
  }
  html {
    font-size: 1rem;
    font-family: serif;
    scroll-behavior: smooth;

Changes to box/constbox/base.sxn.

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;;;----------------------------------------------------------------------------
;;; Copyright (c) 2023-present Detlef Stern
;;;
;;; This file is part of Zettelstore.
;;;
;;; Zettelstore is licensed under the latest version of the EUPL (European
;;; Union Public License). Please see file LICENSE.txt for your rights and
;;; obligations under this license.
;;;
;;; SPDX-License-Identifier: EUPL-1.2
;;; SPDX-FileCopyrightText: 2023-present Detlef Stern
;;;----------------------------------------------------------------------------

`(@@@@
(html ,@(if lang `((@ (lang ,lang))))
(head
  (meta (@ (charset "utf-8")))
  (meta (@ (name "viewport") (content "width=device-width, initial-scale=1.0")))
  (meta (@ (name "generator") (content "Zettelstore")))
  (meta (@ (name "format-detection") (content "telephone=no")))
  ,@META-HEADER
  (link (@ (rel "stylesheet") (href ,css-base-url)))
  (link (@ (rel "stylesheet") (href ,css-user-url)))
  ,@(ROLE-DEFAULT-meta (current-binding))
  (title ,title))
(body
  (nav (@ (class "zs-menu"))
    (a (@ (href ,home-url)) "Home")
    ,@(if with-auth
      `((div (@ (class "zs-dropdown"))
        (button "User")
<
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`(@@@@
(html ,@(if lang `((@ (lang ,lang))))
(head
  (meta (@ (charset "utf-8")))
  (meta (@ (name "viewport") (content "width=device-width, initial-scale=1.0")))
  (meta (@ (name "generator") (content "Zettelstore")))
  (meta (@ (name "format-detection") (content "telephone=no")))
  ,@META-HEADER
  (link (@ (rel "stylesheet") (href ,css-base-url)))
  (link (@ (rel "stylesheet") (href ,css-user-url)))
  ,@(ROLE-DEFAULT-meta (current-environment))
  (title ,title))
(body
  (nav (@ (class "zs-menu"))
    (a (@ (href ,home-url)) "Home")
    ,@(if with-auth
      `((div (@ (class "zs-dropdown"))
        (button "User")
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    ,@(if new-zettel-links
      `((div (@ (class "zs-dropdown"))
        (button "New")
        (nav (@ (class "zs-dropdown-content"))
          ,@(map wui-link new-zettel-links)
       )))
    )
    (search (form (@ (action ,search-url))
      (input (@ (type "search") (inputmode "search") (name ,query-key-query)
                (title "General search field, with same behaviour as search field in search result list")
                (placeholder "Search..") (dir "auto")))))
  )
  (main (@ (class "content")) ,DETAIL)
  ,@(if FOOTER `((footer (hr) ,@FOOTER)))
  ,@(if debug-mode '((div (b "WARNING: Debug mode is enabled. DO NOT USE IN PRODUCTION!"))))
)))







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    ,@(if new-zettel-links
      `((div (@ (class "zs-dropdown"))
        (button "New")
        (nav (@ (class "zs-dropdown-content"))
          ,@(map wui-link new-zettel-links)
       )))
    )
    (form (@ (action ,search-url))


      (input (@ (type "text") (placeholder "Search..") (name ,query-key-query) (dir "auto"))))
  )
  (main (@ (class "content")) ,DETAIL)
  ,@(if FOOTER `((footer (hr) ,@FOOTER)))
  ,@(if debug-mode '((div (b "WARNING: Debug mode is enabled. DO NOT USE IN PRODUCTION!"))))
)))

Changes to box/constbox/constbox.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package constbox puts zettel inside the executable.
package constbox

import (
	"context"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package constbox puts zettel inside the executable.
package constbox

import (
	"context"
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		zettel.NewContent(contentDependencies)},
	id.BaseTemplateZid: {
		constHeader{
			api.KeyTitle:      "Zettelstore Base HTML Template",
			api.KeyRole:       api.ValueRoleConfiguration,
			api.KeySyntax:     meta.SyntaxSxn,
			api.KeyCreated:    "20230510155100",
			api.KeyModified:   "20240219145300",
			api.KeyVisibility: api.ValueVisibilityExpert,
		},
		zettel.NewContent(contentBaseSxn)},
	id.LoginTemplateZid: {
		constHeader{
			api.KeyTitle:      "Zettelstore Login Form HTML Template",
			api.KeyRole:       api.ValueRoleConfiguration,
			api.KeySyntax:     meta.SyntaxSxn,
			api.KeyCreated:    "20200804111624",
			api.KeyModified:   "20240219145200",
			api.KeyVisibility: api.ValueVisibilityExpert,
		},
		zettel.NewContent(contentLoginSxn)},
	id.ZettelTemplateZid: {
		constHeader{
			api.KeyTitle:      "Zettelstore Zettel HTML Template",
			api.KeyRole:       api.ValueRoleConfiguration,
			api.KeySyntax:     meta.SyntaxSxn,
			api.KeyCreated:    "20230510155300",
			api.KeyModified:   "20240219145100",
			api.KeyVisibility: api.ValueVisibilityExpert,
		},
		zettel.NewContent(contentZettelSxn)},
	id.InfoTemplateZid: {
		constHeader{
			api.KeyTitle:      "Zettelstore Info HTML Template",
			api.KeyRole:       api.ValueRoleConfiguration,
			api.KeySyntax:     meta.SyntaxSxn,
			api.KeyCreated:    "20200804111624",
			api.KeyModified:   "20240219145200",
			api.KeyVisibility: api.ValueVisibilityExpert,
		},
		zettel.NewContent(contentInfoSxn)},
	id.FormTemplateZid: {
		constHeader{
			api.KeyTitle:      "Zettelstore Form HTML Template",
			api.KeyRole:       api.ValueRoleConfiguration,
			api.KeySyntax:     meta.SyntaxSxn,
			api.KeyCreated:    "20200804111624",
			api.KeyModified:   "20240219145200",
			api.KeyVisibility: api.ValueVisibilityExpert,
		},
		zettel.NewContent(contentFormSxn)},
	id.RenameTemplateZid: {
		constHeader{
			api.KeyTitle:      "Zettelstore Rename Form HTML Template",
			api.KeyRole:       api.ValueRoleConfiguration,
			api.KeySyntax:     meta.SyntaxSxn,
			api.KeyCreated:    "20200804111624",
			api.KeyModified:   "20240219145200",
			api.KeyVisibility: api.ValueVisibilityExpert,
		},
		zettel.NewContent(contentRenameSxn)},
	id.DeleteTemplateZid: {
		constHeader{
			api.KeyTitle:      "Zettelstore Delete HTML Template",
			api.KeyRole:       api.ValueRoleConfiguration,
			api.KeySyntax:     meta.SyntaxSxn,
			api.KeyCreated:    "20200804111624",
			api.KeyModified:   "20240219145200",
			api.KeyVisibility: api.ValueVisibilityExpert,
		},
		zettel.NewContent(contentDeleteSxn)},
	id.ListTemplateZid: {
		constHeader{
			api.KeyTitle:      "Zettelstore List Zettel HTML Template",
			api.KeyRole:       api.ValueRoleConfiguration,
			api.KeySyntax:     meta.SyntaxSxn,
			api.KeyCreated:    "20230704122100",
			api.KeyModified:   "20240219145200",
			api.KeyVisibility: api.ValueVisibilityExpert,
		},
		zettel.NewContent(contentListZettelSxn)},
	id.ErrorTemplateZid: {
		constHeader{
			api.KeyTitle:      "Zettelstore Error HTML Template",
			api.KeyRole:       api.ValueRoleConfiguration,
			api.KeySyntax:     meta.SyntaxSxn,
			api.KeyCreated:    "20210305133215",
			api.KeyModified:   "20240219145200",
			api.KeyVisibility: api.ValueVisibilityExpert,
		},
		zettel.NewContent(contentErrorSxn)},
	id.StartSxnZid: {
		constHeader{
			api.KeyTitle:      "Zettelstore Sxn Start Code",
			api.KeyRole:       api.ValueRoleConfiguration,
			api.KeySyntax:     meta.SyntaxSxn,
			api.KeyCreated:    "20230824160700",
			api.KeyModified:   "20240219145200",
			api.KeyVisibility: api.ValueVisibilityExpert,
			api.KeyPrecursor:  string(api.ZidSxnBase),
		},
		zettel.NewContent(contentStartCodeSxn)},
	id.BaseSxnZid: {
		constHeader{
			api.KeyTitle:      "Zettelstore Sxn Base Code",
			api.KeyRole:       api.ValueRoleConfiguration,
			api.KeySyntax:     meta.SyntaxSxn,
			api.KeyCreated:    "20230619132800",
			api.KeyModified:   "20240219144600",
			api.KeyReadOnly:   api.ValueTrue,
			api.KeyVisibility: api.ValueVisibilityExpert,
			api.KeyPrecursor:  string(api.ZidSxnPrelude),
		},
		zettel.NewContent(contentBaseCodeSxn)},
	id.PreludeSxnZid: {
		constHeader{
			api.KeyTitle:      "Zettelstore Sxn Prelude",
			api.KeyRole:       api.ValueRoleConfiguration,
			api.KeySyntax:     meta.SyntaxSxn,
			api.KeyCreated:    "20231006181700",
			api.KeyModified:   "20240222121200",
			api.KeyReadOnly:   api.ValueTrue,
			api.KeyVisibility: api.ValueVisibilityExpert,
		},
		zettel.NewContent(contentPreludeSxn)},
	id.MustParse(api.ZidBaseCSS): {
		constHeader{
			api.KeyTitle:      "Zettelstore Base CSS",







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		zettel.NewContent(contentDependencies)},
	id.BaseTemplateZid: {
		constHeader{
			api.KeyTitle:      "Zettelstore Base HTML Template",
			api.KeyRole:       api.ValueRoleConfiguration,
			api.KeySyntax:     meta.SyntaxSxn,
			api.KeyCreated:    "20230510155100",
			api.KeyModified:   "20230827212200",
			api.KeyVisibility: api.ValueVisibilityExpert,
		},
		zettel.NewContent(contentBaseSxn)},
	id.LoginTemplateZid: {
		constHeader{
			api.KeyTitle:      "Zettelstore Login Form HTML Template",
			api.KeyRole:       api.ValueRoleConfiguration,
			api.KeySyntax:     meta.SyntaxSxn,
			api.KeyCreated:    "20200804111624",
			api.KeyModified:   "20230527144100",
			api.KeyVisibility: api.ValueVisibilityExpert,
		},
		zettel.NewContent(contentLoginSxn)},
	id.ZettelTemplateZid: {
		constHeader{
			api.KeyTitle:      "Zettelstore Zettel HTML Template",
			api.KeyRole:       api.ValueRoleConfiguration,
			api.KeySyntax:     meta.SyntaxSxn,
			api.KeyCreated:    "20230510155300",
			api.KeyModified:   "20231126180500",
			api.KeyVisibility: api.ValueVisibilityExpert,
		},
		zettel.NewContent(contentZettelSxn)},
	id.InfoTemplateZid: {
		constHeader{
			api.KeyTitle:      "Zettelstore Info HTML Template",
			api.KeyRole:       api.ValueRoleConfiguration,
			api.KeySyntax:     meta.SyntaxSxn,
			api.KeyCreated:    "20200804111624",
			api.KeyModified:   "20231023152000",
			api.KeyVisibility: api.ValueVisibilityExpert,
		},
		zettel.NewContent(contentInfoSxn)},
	id.FormTemplateZid: {
		constHeader{
			api.KeyTitle:      "Zettelstore Form HTML Template",
			api.KeyRole:       api.ValueRoleConfiguration,
			api.KeySyntax:     meta.SyntaxSxn,
			api.KeyCreated:    "20200804111624",
			api.KeyModified:   "20230621132600",
			api.KeyVisibility: api.ValueVisibilityExpert,
		},
		zettel.NewContent(contentFormSxn)},
	id.RenameTemplateZid: {
		constHeader{
			api.KeyTitle:      "Zettelstore Rename Form HTML Template",
			api.KeyRole:       api.ValueRoleConfiguration,
			api.KeySyntax:     meta.SyntaxSxn,
			api.KeyCreated:    "20200804111624",
			api.KeyModified:   "20230707190246",
			api.KeyVisibility: api.ValueVisibilityExpert,
		},
		zettel.NewContent(contentRenameSxn)},
	id.DeleteTemplateZid: {
		constHeader{
			api.KeyTitle:      "Zettelstore Delete HTML Template",
			api.KeyRole:       api.ValueRoleConfiguration,
			api.KeySyntax:     meta.SyntaxSxn,
			api.KeyCreated:    "20200804111624",
			api.KeyModified:   "20230621133100",
			api.KeyVisibility: api.ValueVisibilityExpert,
		},
		zettel.NewContent(contentDeleteSxn)},
	id.ListTemplateZid: {
		constHeader{
			api.KeyTitle:      "Zettelstore List Zettel HTML Template",
			api.KeyRole:       api.ValueRoleConfiguration,
			api.KeySyntax:     meta.SyntaxSxn,
			api.KeyCreated:    "20230704122100",
			api.KeyModified:   "20231129112800",
			api.KeyVisibility: api.ValueVisibilityExpert,
		},
		zettel.NewContent(contentListZettelSxn)},
	id.ErrorTemplateZid: {
		constHeader{
			api.KeyTitle:      "Zettelstore Error HTML Template",
			api.KeyRole:       api.ValueRoleConfiguration,
			api.KeySyntax:     meta.SyntaxSxn,
			api.KeyCreated:    "20210305133215",
			api.KeyModified:   "20230527224800",
			api.KeyVisibility: api.ValueVisibilityExpert,
		},
		zettel.NewContent(contentErrorSxn)},
	id.StartSxnZid: {
		constHeader{
			api.KeyTitle:      "Zettelstore Sxn Start Code",
			api.KeyRole:       api.ValueRoleConfiguration,
			api.KeySyntax:     meta.SyntaxSxn,
			api.KeyCreated:    "20230824160700",

			api.KeyVisibility: api.ValueVisibilityExpert,
			api.KeyPrecursor:  string(api.ZidSxnBase),
		},
		zettel.NewContent(contentStartCodeSxn)},
	id.BaseSxnZid: {
		constHeader{
			api.KeyTitle:      "Zettelstore Sxn Base Code",
			api.KeyRole:       api.ValueRoleConfiguration,
			api.KeySyntax:     meta.SyntaxSxn,
			api.KeyCreated:    "20230619132800",
			api.KeyModified:   "20231012154500",
			api.KeyReadOnly:   api.ValueTrue,
			api.KeyVisibility: api.ValueVisibilityExpert,
			api.KeyPrecursor:  string(api.ZidSxnPrelude),
		},
		zettel.NewContent(contentBaseCodeSxn)},
	id.PreludeSxnZid: {
		constHeader{
			api.KeyTitle:      "Zettelstore Sxn Prelude",
			api.KeyRole:       api.ValueRoleConfiguration,
			api.KeySyntax:     meta.SyntaxSxn,
			api.KeyCreated:    "20231006181700",
			api.KeyModified:   "20231019140400",
			api.KeyReadOnly:   api.ValueTrue,
			api.KeyVisibility: api.ValueVisibilityExpert,
		},
		zettel.NewContent(contentPreludeSxn)},
	id.MustParse(api.ZidBaseCSS): {
		constHeader{
			api.KeyTitle:      "Zettelstore Base CSS",

Changes to box/constbox/delete.sxn.

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;;;----------------------------------------------------------------------------
;;; Copyright (c) 2023-present Detlef Stern
;;;
;;; This file is part of Zettelstore.
;;;
;;; Zettelstore is licensed under the latest version of the EUPL (European
;;; Union Public License). Please see file LICENSE.txt for your rights and
;;; obligations under this license.
;;;
;;; SPDX-License-Identifier: EUPL-1.2
;;; SPDX-FileCopyrightText: 2023-present Detlef Stern
;;;----------------------------------------------------------------------------

`(article
  (header (h1 "Delete Zettel " ,zid))
  (p "Do you really want to delete this zettel?")
  ,@(if shadowed-box
    `((div (@ (class "zs-info"))
      (h2 "Information")
      (p "If you delete this zettel, the previously shadowed zettel from overlayed box " ,shadowed-box " becomes available.")
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`(article
  (header (h1 "Delete Zettel " ,zid))
  (p "Do you really want to delete this zettel?")
  ,@(if shadowed-box
    `((div (@ (class "zs-info"))
      (h2 "Information")
      (p "If you delete this zettel, the previously shadowed zettel from overlayed box " ,shadowed-box " becomes available.")

Changes to box/constbox/error.sxn.

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;;;----------------------------------------------------------------------------
;;; Copyright (c) 2023-present Detlef Stern
;;;
;;; This file is part of Zettelstore.
;;;
;;; Zettelstore is licensed under the latest version of the EUPL (European
;;; Union Public License). Please see file LICENSE.txt for your rights and
;;; obligations under this license.
;;;
;;; SPDX-License-Identifier: EUPL-1.2
;;; SPDX-FileCopyrightText: 2023-present Detlef Stern
;;;----------------------------------------------------------------------------

`(article
  (header (h1 ,heading))
  ,message
)
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`(article
  (header (h1 ,heading))
  ,message
)

Changes to box/constbox/form.sxn.

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;;;----------------------------------------------------------------------------
;;; Copyright (c) 2023-present Detlef Stern
;;;
;;; This file is part of Zettelstore.
;;;
;;; Zettelstore is licensed under the latest version of the EUPL (European
;;; Union Public License). Please see file LICENSE.txt for your rights and
;;; obligations under this license.
;;;
;;; SPDX-License-Identifier: EUPL-1.2
;;; SPDX-FileCopyrightText: 2023-present Detlef Stern
;;;----------------------------------------------------------------------------

`(article
  (header (h1 ,heading))
  (form (@ (action ,form-action-url) (method "POST") (enctype "multipart/form-data"))
  (div
    (label (@ (for "zs-title")) "Title " (a (@ (title "Main heading of this zettel.")) (@H "&#9432;")))
    (input (@ (class "zs-input") (type "text") (id "zs-title") (name "title")
              (title "Title of this zettel")
              (placeholder "Title..") (value ,meta-title) (dir "auto") (autofocus))))
  (div
    (label (@ (for "zs-role")) "Role " (a (@ (title "One word, without spaces, to set the main role of this zettel.")) (@H "&#9432;")))
    (input (@ (class "zs-input") (type "text") (pattern "\\w*") (id "zs-role") (name "role")
              (title "One word, letters and digits, but no spaces, to set the main role of the zettel.")
              (placeholder "role..") (value ,meta-role) (dir "auto")
      ,@(if role-data '((list "zs-role-data")))
    ))
    ,@(wui-datalist "zs-role-data" role-data)
  )
  (div
    (label (@ (for "zs-tags")) "Tags " (a (@ (title "Tags must begin with an '#' sign. They are separated by spaces.")) (@H "&#9432;")))
    (input (@ (class "zs-input") (type "text") (id "zs-tags") (name "tags")
              (title "Tags/keywords to categorize the zettel. Each tags is a word that begins with a '#' character; they are separated by spaces")
              (placeholder "#tag") (value ,meta-tags) (dir "auto"))))
  (div
    (label (@ (for "zs-meta")) "Metadata " (a (@ (title "Other metadata for this zettel. Each line contains a key/value pair, separated by a colon ':'.")) (@H "&#9432;")))
    (textarea (@ (class "zs-input") (id "zs-meta") (name "meta") (rows "4")
                 (title "Additional metadata about the zettel")
                 (placeholder "metakey: metavalue") (dir "auto")) ,meta))
  (div
    (label (@ (for "zs-syntax")) "Syntax " (a (@ (title "Syntax of zettel content below, one word. Typically 'zmk' (for zettelmarkup).")) (@H "&#9432;")))
    (input (@ (class "zs-input") (type "text") (pattern "\\w*") (id "zs-syntax") (name "syntax")
              (title "Syntax/format of zettel content below, one word, letters and digits, no spaces.")
              (placeholder "syntax..") (value ,meta-syntax) (dir "auto")
      ,@(if syntax-data '((list "zs-syntax-data")))
    ))
    ,@(wui-datalist "zs-syntax-data" syntax-data)
  )
  ,@(if (bound? 'content)
    `((div
      (label (@ (for "zs-content")) "Content " (a (@ (title "Content for this zettel, according to above syntax.")) (@H "&#9432;")))
      (textarea (@ (class "zs-input zs-content") (id "zs-content") (name "content") (rows "20")
                   (title "Zettel content, according to the given syntax")
                   (placeholder "Zettel content..") (dir "auto")) ,content)
    ))
  )
  (div
    (input (@ (class "zs-primary") (type "submit") (value "Submit")))
    (input (@ (class "zs-secondary") (type "submit") (value "Save") (formaction "?save")))
    (input (@ (class "zs-upload") (type "file") (id "zs-file") (name "file")))
  ))
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`(article
  (header (h1 ,heading))
  (form (@ (action ,form-action-url) (method "POST") (enctype "multipart/form-data"))
  (div
    (label (@ (for "zs-title")) "Title " (a (@ (title "Main heading of this zettel.")) (@H "&#9432;")))
    (input (@ (class "zs-input") (type "text") (id "zs-title") (name "title") (placeholder "Title..") (value ,meta-title) (dir "auto") (autofocus))))


  (div
    (label (@ (for "zs-role")) "Role " (a (@ (title "One word, without spaces, to set the main role of this zettel.")) (@H "&#9432;")))


    (input (@ (class "zs-input") (type "text") (id "zs-role") (name "role") (placeholder "role..") (value ,meta-role) (dir "auto")
      ,@(if role-data '((list "zs-role-data")))
    ))
    ,@(wui-datalist "zs-role-data" role-data)
  )
  (div
    (label (@ (for "zs-tags")) "Tags " (a (@ (title "Tags must begin with an '#' sign. They are separated by spaces.")) (@H "&#9432;")))
    (input (@ (class "zs-input") (type "text") (id "zs-tags") (name "tags") (placeholder "#tag") (value ,meta-tags) (dir "auto"))))


  (div
    (label (@ (for "zs-meta")) "Metadata " (a (@ (title "Other metadata for this zettel. Each line contains a key/value pair, separated by a colon ':'.")) (@H "&#9432;")))
    (textarea (@ (class "zs-input") (id "zs-meta") (name "meta") (rows "4") (placeholder "metakey: metavalue") (dir "auto")) ,meta))


  (div
    (label (@ (for "zs-syntax")) "Syntax " (a (@ (title "Syntax of zettel content below, one word. Typically 'zmk' (for zettelmarkup).")) (@H "&#9432;")))


    (input (@ (class "zs-input") (type "text") (id "zs-syntax") (name "syntax") (placeholder "syntax..") (value ,meta-syntax) (dir "auto")
      ,@(if syntax-data '((list "zs-syntax-data")))
    ))
    ,@(wui-datalist "zs-syntax-data" syntax-data)
  )
  ,@(if (bound? 'content)
    `((div
      (label (@ (for "zs-content")) "Content " (a (@ (title "Content for this zettel, according to above syntax.")) (@H "&#9432;")))
      (textarea (@ (class "zs-input zs-content") (id "zs-content") (name "content") (rows "20") (placeholder "Zettel content..") (dir "auto")) ,content)


    ))
  )
  (div
    (input (@ (class "zs-primary") (type "submit") (value "Submit")))
    (input (@ (class "zs-secondary") (type "submit") (value "Save") (formaction "?save")))
    (input (@ (class "zs-upload") (type "file") (id "zs-file") (name "file")))
  ))

Changes to box/constbox/info.sxn.

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;;;----------------------------------------------------------------------------
;;; Copyright (c) 2023-present Detlef Stern
;;;
;;; This file is part of Zettelstore.
;;;
;;; Zettelstore is licensed under the latest version of the EUPL (European
;;; Union Public License). Please see file LICENSE.txt for your rights and
;;; obligations under this license.
;;;
;;; SPDX-License-Identifier: EUPL-1.2
;;; SPDX-FileCopyrightText: 2023-present Detlef Stern
;;;----------------------------------------------------------------------------

`(article
  (header (h1 "Information for Zettel " ,zid)
    (p
      (a (@ (href ,web-url)) "Web")
      (@H " &#183; ") (a (@ (href ,context-url)) "Context")
      (@H " / ") (a (@ (href ,context-full-url)) "Full")
      ,@(if (bound? 'edit-url) `((@H " &#183; ") (a (@ (href ,edit-url)) "Edit")))
      ,@(ROLE-DEFAULT-actions (current-binding))
      ,@(if (bound? 'reindex-url) `((@H " &#183; ") (a (@ (href ,reindex-url)) "Reindex")))
      ,@(if (bound? 'rename-url) `((@H " &#183; ") (a (@ (href ,rename-url)) "Rename")))
      ,@(if (bound? 'delete-url) `((@H " &#183; ") (a (@ (href ,delete-url)) "Delete")))
    )
  )
  (h2 "Interpreted Metadata")
  (table ,@(map wui-info-meta-table-row metadata))
  (h2 "References")
  ,@(if local-links `((h3 "Local")    (ul ,@(map wui-valid-link local-links))))
  ,@(if query-links `((h3 "Queries")  (ul ,@(map wui-item-link query-links))))
  ,@(if ext-links   `((h3 "External") (ul ,@(map wui-item-popup-link ext-links))))
  (h3 "Unlinked")
  ,@unlinked-content
  (form
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`(article
  (header (h1 "Information for Zettel " ,zid)
    (p
      (a (@ (href ,web-url)) "Web")
      (@H " &#183; ") (a (@ (href ,context-url)) "Context")

      ,@(if (bound? 'edit-url) `((@H " &#183; ") (a (@ (href ,edit-url)) "Edit")))
      ,@(ROLE-DEFAULT-actions (current-environment))
      ,@(if (bound? 'reindex-url) `((@H " &#183; ") (a (@ (href ,reindex-url)) "Reindex")))
      ,@(if (bound? 'rename-url) `((@H " &#183; ") (a (@ (href ,rename-url)) "Rename")))
      ,@(if (bound? 'delete-url) `((@H " &#183; ") (a (@ (href ,delete-url)) "Delete")))
    )
  )
  (h2 "Interpreted Metadata")
  (table ,@(map wui-table-row metadata))
  (h2 "References")
  ,@(if local-links `((h3 "Local")    (ul ,@(map wui-valid-link local-links))))
  ,@(if query-links `((h3 "Queries")  (ul ,@(map wui-item-link query-links))))
  ,@(if ext-links   `((h3 "External") (ul ,@(map wui-item-popup-link ext-links))))
  (h3 "Unlinked")
  ,@unlinked-content
  (form

Changes to box/constbox/listzettel.sxn.

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;;;----------------------------------------------------------------------------
;;; Copyright (c) 2023-present Detlef Stern
;;;
;;; This file is part of Zettelstore.
;;;
;;; Zettelstore is licensed under the latest version of the EUPL (European
;;; Union Public License). Please see file LICENSE.txt for your rights and
;;; obligations under this license.
;;;
;;; SPDX-License-Identifier: EUPL-1.2
;;; SPDX-FileCopyrightText: 2023-present Detlef Stern
;;;----------------------------------------------------------------------------

`(article
  (header (h1 ,heading))
  (search (form (@ (action ,search-url))
    (input (@ (class "zs-input") (type "search") (inputmode "search") (name ,query-key-query)
              (title "Contains the search that leads to the list below. You're allowed to modify it")
              (placeholder "Search..") (value ,query-value) (dir "auto")))))
  ,@(if (bound? 'tag-zettel)
     `((p (@ (class "zs-meta-zettel")) "Tag zettel: " ,@tag-zettel))
    )
  ,@(if (bound? 'create-tag-zettel)
     `((p (@ (class "zs-meta-zettel")) "Create tag zettel: " ,@create-tag-zettel))
    )
  ,@(if (bound? 'role-zettel)
     `((p (@ (class "zs-meta-zettel")) "Role zettel: " ,@role-zettel))
    )
  ,@(if (bound? 'create-role-zettel)
     `((p (@ (class "zs-meta-zettel")) "Create role zettel: " ,@create-role-zettel))
    )
  ,@content
  ,@endnotes
  (form (@ (action ,(if (bound? 'create-url) create-url)))
      ,(if (bound? 'data-url)
          `(@L "Other encodings"
               ,(if (> num-entries 3) `(@L " of these " ,num-entries " entries: ") ": ")
               (a (@ (href ,data-url)) "data")
               ", "
               (a (@ (href ,plain-url)) "plain")
           )
      )
      ,@(if (bound? 'create-url)
        `((input (@ (type "hidden") (name ,query-key-query) (value ,query-value)))
          (input (@ (type "hidden") (name ,query-key-seed) (value ,seed)))
          (input (@ (class "zs-primary") (type "submit") (value "Save As Zettel")))
        )
      )
  )
)
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`(article
  (header (h1 ,heading))
  (form (@ (action ,search-url))


    (input (@ (class "zs-input") (type "text") (placeholder "Search..") (name ,query-key-query) (value ,query-value) (dir "auto"))))
  ,@(if (bound? 'tag-zettel)
     `((p (@ (class "zs-meta-zettel")) "Tag zettel: " ,@tag-zettel))
    )
  ,@(if (bound? 'create-tag-zettel)
     `((p (@ (class "zs-meta-zettel")) "Create tag zettel: " ,@create-tag-zettel))
    )
  ,@(if (bound? 'role-zettel)
     `((p (@ (class "zs-meta-zettel")) "Role zettel: " ,@role-zettel))
    )
  ,@(if (bound? 'create-role-zettel)
     `((p (@ (class "zs-meta-zettel")) "Create role zettel: " ,@create-role-zettel))
    )
  ,@content
  ,@endnotes
  (form (@ (action ,(if (bound? 'create-url) create-url)))

      "Other encodings: "

      (a (@ (href ,data-url)) "data")
      ", "
      (a (@ (href ,plain-url)) "plain")


      ,@(if (bound? 'create-url)
        `((input (@ (type "hidden") (name ,query-key-query) (value ,query-value)))
          (input (@ (type "hidden") (name ,query-key-seed) (value ,seed)))
          (input (@ (class "zs-primary") (type "submit") (value "Save As Zettel")))
        )
      )
  )
)

Changes to box/constbox/login.sxn.

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;;;----------------------------------------------------------------------------
;;; Copyright (c) 2023-present Detlef Stern
;;;
;;; This file is part of Zettelstore.
;;;
;;; Zettelstore is licensed under the latest version of the EUPL (European
;;; Union Public License). Please see file LICENSE.txt for your rights and
;;; obligations under this license.
;;;
;;; SPDX-License-Identifier: EUPL-1.2
;;; SPDX-FileCopyrightText: 2023-present Detlef Stern
;;;----------------------------------------------------------------------------

`(article
  (header (h1 "Login"))
  ,@(if retry '((div (@ (class "zs-indication zs-error")) "Wrong user name / password. Try again.")))
  (form (@ (method "POST") (action ""))
    (div
      (label (@ (for "username")) "User name:")
      (input (@ (class "zs-input") (type "text") (id "username") (name "username") (placeholder "Your user name..") (autofocus))))
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`(article
  (header (h1 "Login"))
  ,@(if retry '((div (@ (class "zs-indication zs-error")) "Wrong user name / password. Try again.")))
  (form (@ (method "POST") (action ""))
    (div
      (label (@ (for "username")) "User name:")
      (input (@ (class "zs-input") (type "text") (id "username") (name "username") (placeholder "Your user name..") (autofocus))))

Changes to box/constbox/prelude.sxn.

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;;;----------------------------------------------------------------------------
;;; Copyright (c) 2023-present Detlef Stern
;;;
;;; This file is part of Zettelstore.
;;;
;;; Zettelstore is licensed under the latest version of the EUPL (European
;;; Union Public License). Please see file LICENSE.txt for your rights and
;;; obligations under this license.
;;;
;;; SPDX-License-Identifier: EUPL-1.2
;;; SPDX-FileCopyrightText: 2023-present Detlef Stern
;;;----------------------------------------------------------------------------

;;; This zettel contains sxn definitions that are independent of specific
;;; subsystems, such as WebUI, API, or other. It just contains generic code to
;;; be used in all places.

;; Constants NIL and T
(defconst NIL ())
(defconst T   'T)





;; defunconst macro to define functions that are bound as a constant.
;;
;; (defunconst NAME ARGS EXPR ...)
(defmacro defunconst (name args . body)
    `(begin (defun ,name ,args ,@body) (defconst ,name ,name)))

;; not macro
(defmacro not (x) `(if ,x NIL T))

;; not= macro, to negate an equivalence
(defmacro not= args `(not (= ,@args)))

;; let macro
;;
;; (let (BINDING ...) EXPR ...), where BINDING is a list of two elements
;;   (SYMBOL EXPR)
(defmacro let (bindings . body)
    `((lambda ,(map car bindings) ,@body) ,@(map cadr bindings)))

;; let* macro
;;
;; (let* (BINDING ...) EXPR ...), where SYMBOL may occur in later bindings.
(defmacro let* (bindings . body)
    (if (null? bindings)
        `((lambda () ,@body))
        `((lambda (,(caar bindings))
                  (let* ,(cdr bindings) ,@body))
                  ,(cadar bindings))))

;; cond macro
;;
;; (cond ((COND EXPR) ...))
(defmacro cond clauses
    (if (null? clauses)
        ()
        (let* ((clause (car clauses))
               (the-cond (car clause)))
              (if (= the-cond T)
                  (cadr clause)
                  `(if ,the-cond
                       ,(cadr clause)
                       (cond ,@(cdr clauses)))))))

;; and macro
;;
;; (and EXPR ...)
(defmacro and args
    (cond ((null? args)       T)
          ((null? (cdr args)) (car args))
          (T                  `(if ,(car args) (and ,@(cdr args))))))








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;;;----------------------------------------------------------------------------
;;; Copyright (c) 2023-present Detlef Stern
;;;
;;; This file is part of Zettelstore.
;;;
;;; Zettelstore is licensed under the latest version of the EUPL (European
;;; Union Public License). Please see file LICENSE.txt for your rights and
;;; obligations under this license.



;;;----------------------------------------------------------------------------

;;; This zettel contains all sxn definitions that are independent of specific
;;; subsystems, such as WebUI, API, or other. It just contains generic code to
;;; be used elsewhere.

;; Constants NIL and T
(defconst NIL ())
(defconst T   'T)

;; Function not
(defun not (x) (if x NIL T))
(defconst not not)

;; defunconst macro to define functions that are bound as a constant.
;;
;; (defunconst NAME ARGS EXPR ...)
(defmacro defunconst (name args . body)
    `(begin (defun ,name ,args ,@body) (defconst ,name ,name)))







;; let macro
;;
;; (let (BINDING ...) EXPR ...), where BINDING is a list of two elements
;;   (SYMBOL EXPR)
(defmacro let (bindings . body)
    `((lambda ,(map car bindings) ,@body) ,@(map cadr bindings)))

;; let* macro
;;
;; (let* (BINDING ...) EXPR ...), where SYMBOL may occur in later bindings.
(defmacro let* (bindings . body)
    (if (null? bindings)
        `((lambda () ,@body))
        `((lambda (,(caar bindings))
                  (let* ,(cdr bindings) ,@body))
                  ,(cadar bindings))))















;; and macro
;;
;; (and EXPR ...)
(defmacro and args
    (cond ((null? args)       T)
          ((null? (cdr args)) (car args))
          (T                  `(if ,(car args) (and ,@(cdr args))))))

Changes to box/constbox/rename.sxn.

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;;;----------------------------------------------------------------------------
;;; Copyright (c) 2023-present Detlef Stern
;;;
;;; This file is part of Zettelstore.
;;;
;;; Zettelstore is licensed under the latest version of the EUPL (European
;;; Union Public License). Please see file LICENSE.txt for your rights and
;;; obligations under this license.
;;;
;;; SPDX-License-Identifier: EUPL-1.2
;;; SPDX-FileCopyrightText: 2023-present Detlef Stern
;;;----------------------------------------------------------------------------

`(article
  (header (h1 "Rename Zettel " ,zid))
  (p "Do you really want to rename this zettel?")
  ,@(if incoming
    `((div (@ (class "zs-warning"))
      (h2 "Warning!")
      (p "If you rename this zettel, incoming references from the following zettel will become invalid.")
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`(article
  (header (h1 "Rename Zettel " ,zid))
  (p "Do you really want to rename this zettel?")
  ,@(if incoming
    `((div (@ (class "zs-warning"))
      (h2 "Warning!")
      (p "If you rename this zettel, incoming references from the following zettel will become invalid.")
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      (ul ,@(map wui-item useless))
    ))
  )
  (form (@ (method "POST"))
    (input (@ (type "hidden") (id "curzid") (name "curzid") (value ,zid)))
    (div
      (label (@ (for "newzid")) "New zettel id")
      (input (@ (class "zs-input") (type "text") (inputmode "numeric") (id "newzid") (name "newzid")
                (pattern "\\d{14}")
                (title "New zettel identifier, must be unique")
                (placeholder "ZID..") (value ,zid) (autofocus))))
    (div (input (@ (class "zs-primary") (type "submit") (value "Rename"))))
  )
  ,(wui-meta-desc metapairs)
)







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      (ul ,@(map wui-item useless))
    ))
  )
  (form (@ (method "POST"))
    (input (@ (type "hidden") (id "curzid") (name "curzid") (value ,zid)))
    (div
      (label (@ (for "newzid")) "New zettel id")



      (input (@ (class "zs-input") (type "text") (id "newzid") (name "newzid") (placeholder "ZID..") (value ,zid) (autofocus))))
    (div (input (@ (class "zs-primary") (type "submit") (value "Rename"))))
  )
  ,(wui-meta-desc metapairs)
)

Changes to box/constbox/start.sxn.

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;;;----------------------------------------------------------------------------
;;; Copyright (c) 2023-present Detlef Stern
;;;
;;; This file is part of Zettelstore.
;;;
;;; Zettelstore is licensed under the latest version of the EUPL (European
;;; Union Public License). Please see file LICENSE.txt for your rights and
;;; obligations under this license.
;;;
;;; SPDX-License-Identifier: EUPL-1.2
;;; SPDX-FileCopyrightText: 2023-present Detlef Stern
;;;----------------------------------------------------------------------------

;;; This zettel is the start of the loading sequence for Sx code used in the
;;; Zettelstore. Via the precursor metadata, dependend zettel are evaluated
;;; before this zettel. You must always depend, directly or indirectly on the
;;; "Zettelstore Sxn Base Code" zettel. It provides the base definitions.








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;;;----------------------------------------------------------------------------
;;; Copyright (c) 2023-present Detlef Stern
;;;
;;; This file is part of Zettelstore.
;;;
;;; Zettelstore is licensed under the latest version of the EUPL (European
;;; Union Public License). Please see file LICENSE.txt for your rights and
;;; obligations under this license.



;;;----------------------------------------------------------------------------

;;; This zettel is the start of the loading sequence for Sx code used in the
;;; Zettelstore. Via the precursor metadata, dependend zettel are evaluated
;;; before this zettel. You must always depend, directly or indirectly on the
;;; "Zettelstore Sxn Base Code" zettel. It provides the base definitions.

Changes to box/constbox/wuicode.sxn.

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;;;----------------------------------------------------------------------------
;;; Copyright (c) 2023-present Detlef Stern
;;;
;;; This file is part of Zettelstore.
;;;
;;; Zettelstore is licensed under the latest version of the EUPL (European
;;; Union Public License). Please see file LICENSE.txt for your rights and
;;; obligations under this license.
;;;
;;; SPDX-License-Identifier: EUPL-1.2
;;; SPDX-FileCopyrightText: 2023-present Detlef Stern
;;;----------------------------------------------------------------------------

;; Contains WebUI specific code, but not related to a specific template.

;; wui-list-item returns the argument as a HTML list item.
(defunconst wui-item (s) `(li ,s))

;; wui-info-meta-table-row takes a pair and translates it into a HTML table row
;; with two columns.
(defunconst wui-info-meta-table-row (p)
    `(tr (td (@ (class zs-info-meta-key)) ,(car p)) (td (@ (class zs-info-meta-value)) ,(cdr p))))

;; wui-valid-link translates a local link into a HTML link. A link is a pair
;; (valid . url). If valid is not truish, only the invalid url is returned.
(defunconst wui-valid-link (l)
    (if (car l)
        `(li (a (@ (href ,(cdr l))) ,(cdr l)))
        `(li ,(cdr l))))








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;;;----------------------------------------------------------------------------
;;; Copyright (c) 2023-present Detlef Stern
;;;
;;; This file is part of Zettelstore.
;;;
;;; Zettelstore is licensed under the latest version of the EUPL (European
;;; Union Public License). Please see file LICENSE.txt for your rights and
;;; obligations under this license.



;;;----------------------------------------------------------------------------

;; Contains WebUI specific code, but not related to a specific template.

;; wui-list-item returns the argument as a HTML list item.
(defunconst wui-item (s) `(li ,s))

;; wui-table-row takes a pair and translates it into a HTML table row with
;; two columns.
(defunconst wui-table-row (p)
    `(tr (td ,(car p)) (td ,(cdr p))))

;; wui-valid-link translates a local link into a HTML link. A link is a pair
;; (valid . url). If valid is not truish, only the invalid url is returned.
(defunconst wui-valid-link (l)
    (if (car l)
        `(li (a (@ (href ,(cdr l))) ,(cdr l)))
        `(li ,(cdr l))))
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;; identifier. It is used in the base template to update the metadata of the
;; HTML page to include some role specific CSS code.
;; Referenced in function "ROLE-DEFAULT-meta".
(defvar CSS-ROLE-map '())

;; ROLE-DEFAULT-meta returns some metadata for the base template. Any role
;; specific code should include the returned list of this function.
(defun ROLE-DEFAULT-meta (binding)
    `(,@(let* ((meta-role (binding-lookup 'meta-role binding))
               (entry (assoc CSS-ROLE-map meta-role)))
              (if (pair? entry)
                  `((link (@ (rel "stylesheet") (href ,(zid-content-path (cdr entry))))))
              )
        )
    )
)

;; ACTION-SEPARATOR defines a HTML value that separates actions links.
(defvar ACTION-SEPARATOR '(@H " &#183; "))

;; ROLE-DEFAULT-actions returns the default text for actions.
(defun ROLE-DEFAULT-actions (binding)
    `(,@(let ((copy-url (binding-lookup 'copy-url binding)))
             (if (defined? copy-url) `((@H " &#183; ") (a (@ (href ,copy-url)) "Copy"))))
      ,@(let ((version-url (binding-lookup 'version-url binding)))
             (if (defined? version-url) `((@H " &#183; ") (a (@ (href ,version-url)) "Version"))))
      ,@(let ((child-url (binding-lookup 'child-url binding)))
             (if (defined? child-url) `((@H " &#183; ") (a (@ (href ,child-url)) "Child"))))
      ,@(let ((folge-url (binding-lookup 'folge-url binding)))
             (if (defined? folge-url) `((@H " &#183; ") (a (@ (href ,folge-url)) "Folge"))))
    )
)

;; ROLE-tag-actions returns an additional action "Zettel" for zettel with role "tag".
(defun ROLE-tag-actions (binding)
    `(,@(ROLE-DEFAULT-actions binding)
      ,@(let ((title (binding-lookup 'title binding)))
             (if (and (defined? title) title)
                 `(,ACTION-SEPARATOR (a (@ (href ,(query->url (concat "tags:" title)))) "Zettel"))
             )
        )
    )
)

;; ROLE-role-actions returns an additional action "Zettel" for zettel with role "role".
(defun ROLE-role-actions (binding)
    `(,@(ROLE-DEFAULT-actions binding)
      ,@(let ((title (binding-lookup 'title binding)))
             (if (and (defined? title) title)
                 `(,ACTION-SEPARATOR (a (@ (href ,(query->url (concat "role:" title)))) "Zettel"))
             )
        )
    )
)

;; ROLE-DEFAULT-heading returns the default text for headings, below the
;; references of a zettel. In most cases it should be called from an
;; overwriting function.
(defun ROLE-DEFAULT-heading (binding)
    `(,@(let ((meta-url (binding-lookup 'meta-url binding)))
           (if (defined? meta-url) `((br) "URL: " ,(url-to-html meta-url))))
      ,@(let ((urls (binding-lookup 'urls binding)))
           (if (defined? urls)
               (map (lambda (u) `(@L (br) ,(car u) ": " ,(url-to-html (cdr u)))) urls)
           )
        )
      ,@(let ((meta-author (binding-lookup 'meta-author binding)))
           (if (and (defined? meta-author) meta-author) `((br) "By " ,meta-author)))
    )
)







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;; identifier. It is used in the base template to update the metadata of the
;; HTML page to include some role specific CSS code.
;; Referenced in function "ROLE-DEFAULT-meta".
(defvar CSS-ROLE-map '())

;; ROLE-DEFAULT-meta returns some metadata for the base template. Any role
;; specific code should include the returned list of this function.
(defunconst ROLE-DEFAULT-meta (env)
    `(,@(let* ((meta-role (environment-lookup 'meta-role env))
               (entry (assoc CSS-ROLE-map meta-role)))
              (if (pair? entry)
                  `((link (@ (rel "stylesheet") (href ,(zid-content-path (cdr entry))))))
              )
        )
    )
)

;;; ACTION-SEPARATOR defines a HTML value that separates actions links.
(defvar ACTION-SEPARATOR '(@H " &#183; "))

;;; ROLE-DEFAULT-actions returns the default text for actions.
(defunconst ROLE-DEFAULT-actions (env)
    `(,@(let ((copy-url (environment-lookup 'copy-url env)))
             (if (defined? copy-url) `((@H " &#183; ") (a (@ (href ,copy-url)) "Copy"))))
      ,@(let ((version-url (environment-lookup 'version-url env)))
             (if (defined? version-url) `((@H " &#183; ") (a (@ (href ,version-url)) "Version"))))
      ,@(let ((child-url (environment-lookup 'child-url env)))
             (if (defined? child-url) `((@H " &#183; ") (a (@ (href ,child-url)) "Child"))))
      ,@(let ((folge-url (environment-lookup 'folge-url env)))
             (if (defined? folge-url) `((@H " &#183; ") (a (@ (href ,folge-url)) "Folge"))))
    )
)

;;; ROLE-tag-actions returns an additional action "Zettel" for zettel with role "tag".
(defunconst ROLE-tag-actions (env)
    `(,@(ROLE-DEFAULT-actions env)
      ,@(let ((title (environment-lookup 'title env)))
             (if (and (defined? title) title)
                 `(,ACTION-SEPARATOR (a (@ (href ,(query->url (string-append "tags:" title)))) "Zettel"))
             )
        )
    )
)












;;; ROLE-DEFAULT-heading returns the default text for headings, below the
;;; references of a zettel. In most cases it should be called from an
;;; overwriting function.
(defunconst ROLE-DEFAULT-heading (env)
    `(,@(let ((meta-url (environment-lookup 'meta-url env)))
           (if (defined? meta-url) `((br) "URL: " ,(url-to-html meta-url))))





      ,@(let ((meta-author (environment-lookup 'meta-author env)))
           (if (and (defined? meta-author) meta-author) `((br) "By " ,meta-author)))
    )
)

Changes to box/constbox/zettel.sxn.

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;;;----------------------------------------------------------------------------
;;; Copyright (c) 2023-present Detlef Stern
;;;
;;; This file is part of Zettelstore.
;;;
;;; Zettelstore is licensed under the latest version of the EUPL (European
;;; Union Public License). Please see file LICENSE.txt for your rights and
;;; obligations under this license.
;;;
;;; SPDX-License-Identifier: EUPL-1.2
;;; SPDX-FileCopyrightText: 2023-present Detlef Stern
;;;----------------------------------------------------------------------------

`(article
  (header
    (h1 ,heading)
    (div (@ (class "zs-meta"))
      ,@(if (bound? 'edit-url) `((a (@ (href ,edit-url)) "Edit") (@H " &#183; ")))
      ,zid (@H " &#183; ")
      (a (@ (href ,info-url)) "Info") (@H " &#183; ")
      "(" ,@(if (bound? 'role-url) `((a (@ (href ,role-url)) ,meta-role)))
          ,@(if (and (bound? 'folge-role-url) (bound? 'meta-folge-role))
                `((@H " &rarr; ") (a (@ (href ,folge-role-url)) ,meta-folge-role)))
      ")"
      ,@(if tag-refs `((@H " &#183; ") ,@tag-refs))
      ,@(ROLE-DEFAULT-actions (current-binding))
      ,@(if predecessor-refs `((br) "Predecessor: " ,predecessor-refs))
      ,@(if precursor-refs `((br) "Precursor: " ,precursor-refs))
      ,@(if superior-refs `((br) "Superior: " ,superior-refs))
      ,@(ROLE-DEFAULT-heading (current-binding))
    )
  )
  ,@content
  ,endnotes
  ,@(if (or folge-links subordinate-links back-links successor-links)
    `((nav
      ,@(if folge-links `((details (@ (,folge-open)) (summary "Folgezettel") (ul ,@(map wui-item-link folge-links)))))
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`(article
  (header
    (h1 ,heading)
    (div (@ (class "zs-meta"))
      ,@(if (bound? 'edit-url) `((a (@ (href ,edit-url)) "Edit") (@H " &#183; ")))
      ,zid (@H " &#183; ")
      (a (@ (href ,info-url)) "Info") (@H " &#183; ")
      "(" ,@(if (bound? 'role-url) `((a (@ (href ,role-url)) ,meta-role)))
          ,@(if (and (bound? 'folge-role-url) (bound? 'meta-folge-role))
                `((@H " &rarr; ") (a (@ (href ,folge-role-url)) ,meta-folge-role)))
      ")"
      ,@(if tag-refs `((@H " &#183; ") ,@tag-refs))
      ,@(ROLE-DEFAULT-actions (current-environment))
      ,@(if predecessor-refs `((br) "Predecessor: " ,predecessor-refs))
      ,@(if precursor-refs `((br) "Precursor: " ,precursor-refs))
      ,@(if superior-refs `((br) "Superior: " ,superior-refs))
      ,@(ROLE-DEFAULT-heading (current-environment))
    )
  )
  ,@content
  ,endnotes
  ,@(if (or folge-links subordinate-links back-links successor-links)
    `((nav
      ,@(if folge-links `((details (@ (,folge-open)) (summary "Folgezettel") (ul ,@(map wui-item-link folge-links)))))

Changes to box/dirbox/dirbox.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package dirbox provides a directory-based zettel box.
package dirbox

import (
	"context"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package dirbox provides a directory-based zettel box.
package dirbox

import (
	"context"
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	_ notifyTypeSpec = iota
	dirNotifyAny
	dirNotifySimple
	dirNotifyFS
)

func getDirSrvInfo(log *logger.Logger, notifyType string) notifyTypeSpec {
	for range 2 {
		switch notifyType {
		case kernel.BoxDirTypeNotify:
			return dirNotifyFS
		case kernel.BoxDirTypeSimple:
			return dirNotifySimple
		default:
			notifyType = kernel.Main.GetConfig(kernel.BoxService, kernel.BoxDefaultDirType).(string)







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	_ notifyTypeSpec = iota
	dirNotifyAny
	dirNotifySimple
	dirNotifyFS
)

func getDirSrvInfo(log *logger.Logger, notifyType string) notifyTypeSpec {
	for count := 0; count < 2; count++ {
		switch notifyType {
		case kernel.BoxDirTypeNotify:
			return dirNotifyFS
		case kernel.BoxDirTypeSimple:
			return dirNotifySimple
		default:
			notifyType = kernel.Main.GetConfig(kernel.BoxService, kernel.BoxDefaultDirType).(string)
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	return box.StartStateStopped
}

func (dp *dirBox) Start(context.Context) error {
	dp.mxCmds.Lock()
	defer dp.mxCmds.Unlock()
	dp.fCmds = make([]chan fileCmd, 0, dp.fSrvs)
	for i := range dp.fSrvs {
		cc := make(chan fileCmd)
		go fileService(i, dp.log.Clone().Str("sub", "file").Uint("fn", uint64(i)).Child(), dp.dir, cc)
		dp.fCmds = append(dp.fCmds, cc)
	}

	var notifier notify.Notifier
	var err error
	switch dp.notifySpec {
	case dirNotifySimple:
		notifier, err = notify.NewSimpleDirNotifier(dp.log.Clone().Str("notify", "simple").Child(), dp.dir)
	default:
		notifier, err = notify.NewFSDirNotifier(dp.log.Clone().Str("notify", "fs").Child(), dp.dir)
	}
	if err != nil {
		dp.log.Error().Err(err).Msg("Unable to create directory supervisor")
		dp.stopFileServices()
		return err
	}
	dp.dirSrv = notify.NewDirService(
		dp,
		dp.log.Clone().Str("sub", "dirsrv").Child(),
		notifier,







|














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	return box.StartStateStopped
}

func (dp *dirBox) Start(context.Context) error {
	dp.mxCmds.Lock()
	defer dp.mxCmds.Unlock()
	dp.fCmds = make([]chan fileCmd, 0, dp.fSrvs)
	for i := uint32(0); i < dp.fSrvs; i++ {
		cc := make(chan fileCmd)
		go fileService(i, dp.log.Clone().Str("sub", "file").Uint("fn", uint64(i)).Child(), dp.dir, cc)
		dp.fCmds = append(dp.fCmds, cc)
	}

	var notifier notify.Notifier
	var err error
	switch dp.notifySpec {
	case dirNotifySimple:
		notifier, err = notify.NewSimpleDirNotifier(dp.log.Clone().Str("notify", "simple").Child(), dp.dir)
	default:
		notifier, err = notify.NewFSDirNotifier(dp.log.Clone().Str("notify", "fs").Child(), dp.dir)
	}
	if err != nil {
		dp.log.Fatal().Err(err).Msg("Unable to create directory supervisor")
		dp.stopFileServices()
		return err
	}
	dp.dirSrv = notify.NewDirService(
		dp,
		dp.log.Clone().Str("sub", "dirsrv").Child(),
		notifier,

Changes to box/dirbox/dirbox_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package dirbox

import "testing"

func TestIsPrime(t *testing.T) {








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package dirbox

import "testing"

func TestIsPrime(t *testing.T) {
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		if got != tc.exp {
			t.Errorf("isPrime(%d)=%v, but got %v", tc.n, tc.exp, got)
		}
	}
}

func TestMakePrime(t *testing.T) {
	for i := range uint32(1500) {
		np := makePrime(i)
		if np < i {
			t.Errorf("makePrime(%d) < %d", i, np)
			continue
		}
		if !isPrime(np) {
			t.Errorf("makePrime(%d) == %d is not prime", i, np)







|







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		if got != tc.exp {
			t.Errorf("isPrime(%d)=%v, but got %v", tc.n, tc.exp, got)
		}
	}
}

func TestMakePrime(t *testing.T) {
	for i := uint32(0); i < 1500; i++ {
		np := makePrime(i)
		if np < i {
			t.Errorf("makePrime(%d) < %d", i, np)
			continue
		}
		if !isPrime(np) {
			t.Errorf("makePrime(%d) == %d is not prime", i, np)

Changes to box/dirbox/service.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package dirbox

import (
	"context"
	"fmt"
	"io"
	"os"
	"path/filepath"
	"time"

	"zettelstore.de/client.fossil/input"
	"zettelstore.de/z/box/filebox"
	"zettelstore.de/z/box/notify"
	"zettelstore.de/z/kernel"
	"zettelstore.de/z/logger"
	"zettelstore.de/z/zettel"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

func fileService(i uint32, log *logger.Logger, dirPath string, cmds <-chan fileCmd) {
	// Something may panic. Ensure a running service.
	defer func() {
		if ri := recover(); ri != nil {
			kernel.Main.LogRecover("FileService", ri)
			go fileService(i, log, dirPath, cmds)
		}
	}()

	log.Debug().Uint("i", uint64(i)).Str("dirpath", dirPath).Msg("File service started")
	for cmd := range cmds {
		cmd.run(dirPath)
	}
	log.Debug().Uint("i", uint64(i)).Str("dirpath", dirPath).Msg("File service stopped")
}

type fileCmd interface {
	run(string)
}

const serviceTimeout = 5 * time.Second // must be shorter than the web servers timeout values for reading+writing.

// COMMAND: srvGetMeta ----------------------------------------
//
// Retrieves the meta data from a zettel.








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package dirbox

import (
	"context"

	"io"
	"os"
	"path/filepath"
	"time"

	"zettelstore.de/z/box/filebox"
	"zettelstore.de/z/box/notify"
	"zettelstore.de/z/input"
	"zettelstore.de/z/kernel"
	"zettelstore.de/z/logger"
	"zettelstore.de/z/zettel"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

func fileService(i uint32, log *logger.Logger, dirPath string, cmds <-chan fileCmd) {
	// Something may panic. Ensure a running service.
	defer func() {
		if ri := recover(); ri != nil {
			kernel.Main.LogRecover("FileService", ri)
			go fileService(i, log, dirPath, cmds)
		}
	}()

	log.Trace().Uint("i", uint64(i)).Str("dirpath", dirPath).Msg("File service started")
	for cmd := range cmds {
		cmd.run(log, dirPath)
	}
	log.Trace().Uint("i", uint64(i)).Str("dirpath", dirPath).Msg("File service stopped")
}

type fileCmd interface {
	run(*logger.Logger, string)
}

const serviceTimeout = 5 * time.Second // must be shorter than the web servers timeout values for reading+writing.

// COMMAND: srvGetMeta ----------------------------------------
//
// Retrieves the meta data from a zettel.
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	rc    chan<- resGetMeta
}
type resGetMeta struct {
	meta *meta.Meta
	err  error
}

func (cmd *fileGetMeta) run(dirPath string) {
	var m *meta.Meta
	var err error

	entry := cmd.entry
	zid := entry.Zid
	if metaName := entry.MetaName; metaName == "" {
		contentName := entry.ContentName
		contentExt := entry.ContentExt
		if contentName == "" || contentExt == "" {
			err = fmt.Errorf("no meta, no content in getMeta, zid=%v", zid)

		} else if entry.HasMetaInContent() {
			m, _, err = parseMetaContentFile(zid, filepath.Join(dirPath, contentName))
		} else {
			m = filebox.CalcDefaultMeta(zid, contentExt)
		}
	} else {
		m, err = parseMetaFile(zid, filepath.Join(dirPath, metaName))
	}







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	rc    chan<- resGetMeta
}
type resGetMeta struct {
	meta *meta.Meta
	err  error
}

func (cmd *fileGetMeta) run(log *logger.Logger, dirPath string) {
	var m *meta.Meta
	var err error

	entry := cmd.entry
	zid := entry.Zid
	if metaName := entry.MetaName; metaName == "" {
		contentName := entry.ContentName
		contentExt := entry.ContentExt
		if contentName == "" || contentExt == "" {
			log.Panic().Zid(zid).Msg("No meta, no content in getMeta")
		}
		if entry.HasMetaInContent() {
			m, _, err = parseMetaContentFile(zid, filepath.Join(dirPath, contentName))
		} else {
			m = filebox.CalcDefaultMeta(zid, contentExt)
		}
	} else {
		m, err = parseMetaFile(zid, filepath.Join(dirPath, metaName))
	}
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}
type resGetMetaContent struct {
	meta    *meta.Meta
	content []byte
	err     error
}

func (cmd *fileGetMetaContent) run(dirPath string) {
	var m *meta.Meta
	var content []byte
	var err error

	entry := cmd.entry
	zid := entry.Zid
	contentName := entry.ContentName
	contentExt := entry.ContentExt
	contentPath := filepath.Join(dirPath, contentName)
	if metaName := entry.MetaName; metaName == "" {
		if contentName == "" || contentExt == "" {
			err = fmt.Errorf("no meta, no content in getMetaContent, zid=%v", zid)

		} else if entry.HasMetaInContent() {
			m, content, err = parseMetaContentFile(zid, contentPath)
		} else {
			m = filebox.CalcDefaultMeta(zid, contentExt)
			content, err = os.ReadFile(contentPath)
		}
	} else {
		m, err = parseMetaFile(zid, filepath.Join(dirPath, metaName))







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}
type resGetMetaContent struct {
	meta    *meta.Meta
	content []byte
	err     error
}

func (cmd *fileGetMetaContent) run(log *logger.Logger, dirPath string) {
	var m *meta.Meta
	var content []byte
	var err error

	entry := cmd.entry
	zid := entry.Zid
	contentName := entry.ContentName
	contentExt := entry.ContentExt
	contentPath := filepath.Join(dirPath, contentName)
	if metaName := entry.MetaName; metaName == "" {
		if contentName == "" || contentExt == "" {
			log.Panic().Zid(zid).Msg("No meta, no content in getMetaContent")
		}
		if entry.HasMetaInContent() {
			m, content, err = parseMetaContentFile(zid, contentPath)
		} else {
			m = filebox.CalcDefaultMeta(zid, contentExt)
			content, err = os.ReadFile(contentPath)
		}
	} else {
		m, err = parseMetaFile(zid, filepath.Join(dirPath, metaName))
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type fileSetZettel struct {
	entry  *notify.DirEntry
	zettel zettel.Zettel
	rc     chan<- resSetZettel
}
type resSetZettel = error

func (cmd *fileSetZettel) run(dirPath string) {
	var err error
	entry := cmd.entry
	zid := entry.Zid
	contentName := entry.ContentName
	m := cmd.zettel.Meta
	content := cmd.zettel.Content.AsBytes()
	metaName := entry.MetaName
	if metaName == "" {
		if contentName == "" {
			err = fmt.Errorf("no meta, no content in setZettel, zid=%v", zid)
		} else {

			contentPath := filepath.Join(dirPath, contentName)
			if entry.HasMetaInContent() {
				err = writeZettelFile(contentPath, m, content)
				cmd.rc <- err
				return
			}
			err = writeFileContent(contentPath, content)
		}
		cmd.rc <- err
		return
	}

	err = writeMetaFile(filepath.Join(dirPath, metaName), m)
	if err == nil && contentName != "" {
		err = writeFileContent(filepath.Join(dirPath, contentName), content)
	}
	cmd.rc <- err
}

func writeMetaFile(metaPath string, m *meta.Meta) error {







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type fileSetZettel struct {
	entry  *notify.DirEntry
	zettel zettel.Zettel
	rc     chan<- resSetZettel
}
type resSetZettel = error

func (cmd *fileSetZettel) run(log *logger.Logger, dirPath string) {

	entry := cmd.entry
	zid := entry.Zid
	contentName := entry.ContentName
	m := cmd.zettel.Meta
	content := cmd.zettel.Content.AsBytes()
	metaName := entry.MetaName
	if metaName == "" {
		if contentName == "" {
			log.Panic().Zid(zid).Msg("No meta, no content in setZettel")

		}
		contentPath := filepath.Join(dirPath, contentName)
		if entry.HasMetaInContent() {
			err := writeZettelFile(contentPath, m, content)
			cmd.rc <- err
			return
		}
		err := writeFileContent(contentPath, content)

		cmd.rc <- err
		return
	}

	err := writeMetaFile(filepath.Join(dirPath, metaName), m)
	if err == nil && contentName != "" {
		err = writeFileContent(filepath.Join(dirPath, contentName), content)
	}
	cmd.rc <- err
}

func writeMetaFile(metaPath string, m *meta.Meta) error {
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}

func writeZettelFile(contentPath string, m *meta.Meta, content []byte) error {
	zettelFile, err := openFileWrite(contentPath)
	if err != nil {
		return err
	}

	err = writeMetaHeader(zettelFile, m)

	if err == nil {
		_, err = zettelFile.Write(content)
	}
	if err1 := zettelFile.Close(); err == nil {
		err = err1
	}
	return err







>
|
>







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}

func writeZettelFile(contentPath string, m *meta.Meta, content []byte) error {
	zettelFile, err := openFileWrite(contentPath)
	if err != nil {
		return err
	}
	if err == nil {
		err = writeMetaHeader(zettelFile, m)
	}
	if err == nil {
		_, err = zettelFile.Write(content)
	}
	if err1 := zettelFile.Close(); err == nil {
		err = err1
	}
	return err
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type fileDeleteZettel struct {
	entry *notify.DirEntry
	rc    chan<- resDeleteZettel
}
type resDeleteZettel = error

func (cmd *fileDeleteZettel) run(dirPath string) {
	var err error

	entry := cmd.entry
	contentName := entry.ContentName
	contentPath := filepath.Join(dirPath, contentName)
	if metaName := entry.MetaName; metaName == "" {
		if contentName == "" {
			err = fmt.Errorf("no meta, no content in deleteZettel, zid=%v", entry.Zid)
		} else {
			err = os.Remove(contentPath)
		}

	} else {
		if contentName != "" {
			err = os.Remove(contentPath)
		}
		err1 := os.Remove(filepath.Join(dirPath, metaName))
		if err == nil {
			err = err1







|







|
<
<

>







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type fileDeleteZettel struct {
	entry *notify.DirEntry
	rc    chan<- resDeleteZettel
}
type resDeleteZettel = error

func (cmd *fileDeleteZettel) run(log *logger.Logger, dirPath string) {
	var err error

	entry := cmd.entry
	contentName := entry.ContentName
	contentPath := filepath.Join(dirPath, contentName)
	if metaName := entry.MetaName; metaName == "" {
		if contentName == "" {
			log.Panic().Zid(entry.Zid).Msg("No meta, no content in getMetaContent")


		}
		err = os.Remove(contentPath)
	} else {
		if contentName != "" {
			err = os.Remove(contentPath)
		}
		err1 := os.Remove(filepath.Join(dirPath, metaName))
		if err == nil {
			err = err1

Changes to box/filebox/filebox.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

// Package filebox provides boxes that are stored in a file.
package filebox

import (
	"errors"








<
<
<







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8



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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package filebox provides boxes that are stored in a file.
package filebox

import (
	"errors"

Changes to box/filebox/zipbox.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package filebox

import (
	"archive/zip"
	"context"
	"fmt"
	"io"
	"strings"

	"zettelstore.de/client.fossil/input"
	"zettelstore.de/z/box"
	"zettelstore.de/z/box/notify"
	"zettelstore.de/z/logger"
	"zettelstore.de/z/query"
	"zettelstore.de/z/zettel"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)









<
<
<







<



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|
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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package filebox

import (
	"archive/zip"
	"context"

	"io"
	"strings"

	"zettelstore.de/z/box"
	"zettelstore.de/z/box/notify"
	"zettelstore.de/z/input"
	"zettelstore.de/z/logger"
	"zettelstore.de/z/query"
	"zettelstore.de/z/zettel"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

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	var m *meta.Meta
	var src []byte
	var inMeta bool

	contentName := entry.ContentName
	if metaName := entry.MetaName; metaName == "" {
		if contentName == "" {
			err = fmt.Errorf("no meta, no content in getZettel, zid=%v", zid)
			return zettel.Zettel{}, err
		}
		src, err = readZipFileContent(reader, entry.ContentName)
		if err != nil {
			return zettel.Zettel{}, err
		}
		if entry.HasMetaInContent() {
			inp := input.NewInput(src)







|
<







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	var m *meta.Meta
	var src []byte
	var inMeta bool

	contentName := entry.ContentName
	if metaName := entry.MetaName; metaName == "" {
		if contentName == "" {
			zb.log.Panic().Zid(zid).Msg("No meta, no content in zipBox.GetZettel")

		}
		src, err = readZipFileContent(reader, entry.ContentName)
		if err != nil {
			return zettel.Zettel{}, err
		}
		if entry.HasMetaInContent() {
			inp := input.NewInput(src)
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func (zb *zipBox) readZipMeta(reader *zip.ReadCloser, zid id.Zid, entry *notify.DirEntry) (m *meta.Meta, err error) {
	var inMeta bool
	if metaName := entry.MetaName; metaName == "" {
		contentName := entry.ContentName
		contentExt := entry.ContentExt
		if contentName == "" || contentExt == "" {
			err = fmt.Errorf("no meta, no content in getMeta, zid=%v", zid)

		} else if entry.HasMetaInContent() {
			m, err = readZipMetaFile(reader, zid, contentName)
		} else {
			m = CalcDefaultMeta(zid, contentExt)
		}
	} else {
		m, err = readZipMetaFile(reader, zid, metaName)
	}







|
>
|







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func (zb *zipBox) readZipMeta(reader *zip.ReadCloser, zid id.Zid, entry *notify.DirEntry) (m *meta.Meta, err error) {
	var inMeta bool
	if metaName := entry.MetaName; metaName == "" {
		contentName := entry.ContentName
		contentExt := entry.ContentExt
		if contentName == "" || contentExt == "" {
			zb.log.Panic().Zid(zid).Msg("No meta, no content in getMeta")
		}
		if entry.HasMetaInContent() {
			m, err = readZipMetaFile(reader, zid, contentName)
		} else {
			m = CalcDefaultMeta(zid, contentExt)
		}
	} else {
		m, err = readZipMetaFile(reader, zid, metaName)
	}

Changes to box/helper.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package box

import (
	"net/url"
	"strconv"
	"time"

	"zettelstore.de/z/zettel/id"
)

// GetNewZid calculates a new and unused zettel identifier, based on the current date and time.
func GetNewZid(testZid func(id.Zid) (bool, error)) (id.Zid, error) {
	withSeconds := false
	for range 90 { // Must be completed within 9 seconds (less than web/server.writeTimeout)
		zid := id.New(withSeconds)
		found, err := testZid(zid)
		if err != nil {
			return id.Invalid, err
		}
		if found {
			return zid, nil








<
<
<















|







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8



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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package box

import (
	"net/url"
	"strconv"
	"time"

	"zettelstore.de/z/zettel/id"
)

// GetNewZid calculates a new and unused zettel identifier, based on the current date and time.
func GetNewZid(testZid func(id.Zid) (bool, error)) (id.Zid, error) {
	withSeconds := false
	for i := 0; i < 90; i++ { // Must be completed within 9 seconds (less than web/server.writeTimeout)
		zid := id.New(withSeconds)
		found, err := testZid(zid)
		if err != nil {
			return id.Invalid, err
		}
		if found {
			return zid, nil

Changes to box/manager/anteroom.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package manager

import (
	"sync"









<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package manager

import (
	"sync"

Changes to box/manager/anteroom_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package manager

import (
	"testing"









<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package manager

import (
	"testing"

Changes to box/manager/box.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package manager

import (
	"context"
	"errors"








<
<
<







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8



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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package manager

import (
	"context"
	"errors"
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// Location returns some information where the box is located.
func (mgr *Manager) Location() string {
	if len(mgr.boxes) <= 2 {
		return "NONE"
	}
	var sb strings.Builder
	for i := range len(mgr.boxes) - 2 {
		if i > 0 {
			sb.WriteString(", ")
		}
		sb.WriteString(mgr.boxes[i].Location())
	}
	return sb.String()
}







|







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// Location returns some information where the box is located.
func (mgr *Manager) Location() string {
	if len(mgr.boxes) <= 2 {
		return "NONE"
	}
	var sb strings.Builder
	for i := 0; i < len(mgr.boxes)-2; i++ {
		if i > 0 {
			sb.WriteString(", ")
		}
		sb.WriteString(mgr.boxes[i].Location())
	}
	return sb.String()
}
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	}
	mgr.mgrMx.RLock()
	defer mgr.mgrMx.RUnlock()
	for i, p := range mgr.boxes {
		err := p.RenameZettel(ctx, curZid, newZid)
		var errZNF box.ErrZettelNotFound
		if err != nil && !errors.As(err, &errZNF) {
			for j := range i {
				mgr.boxes[j].RenameZettel(ctx, newZid, curZid)
			}
			return err
		}
	}
	mgr.idxRenameZettel(ctx, curZid, newZid)
	return nil







|







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	}
	mgr.mgrMx.RLock()
	defer mgr.mgrMx.RUnlock()
	for i, p := range mgr.boxes {
		err := p.RenameZettel(ctx, curZid, newZid)
		var errZNF box.ErrZettelNotFound
		if err != nil && !errors.As(err, &errZNF) {
			for j := 0; j < i; j++ {
				mgr.boxes[j].RenameZettel(ctx, newZid, curZid)
			}
			return err
		}
	}
	mgr.idxRenameZettel(ctx, curZid, newZid)
	return nil

Changes to box/manager/collect.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package manager

import (
	"strings"









<
<
<







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7
8



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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package manager

import (
	"strings"

Changes to box/manager/enrich.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package manager

import (
	"context"
	"strconv"








<
<
<







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8



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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package manager

import (
	"context"
	"strconv"

Changes to box/manager/indexer.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package manager

import (
	"context"
	"fmt"








<
<
<







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5
6
7
8



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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package manager

import (
	"context"
	"fmt"

Changes to box/manager/manager.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

// Package manager coordinates the various boxes and indexes of a Zettelstore.
package manager

import (
	"context"
	"io"
	"net/url"
	"sync"
	"time"


	"zettelstore.de/z/auth"
	"zettelstore.de/z/box"
	"zettelstore.de/z/box/manager/mapstore"
	"zettelstore.de/z/box/manager/store"
	"zettelstore.de/z/config"
	"zettelstore.de/z/kernel"
	"zettelstore.de/z/logger"
	"zettelstore.de/z/strfun"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"








<
<
<












>


|







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8



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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package manager coordinates the various boxes and indexes of a Zettelstore.
package manager

import (
	"context"
	"io"
	"net/url"
	"sync"
	"time"

	"zettelstore.de/client.fossil/maps"
	"zettelstore.de/z/auth"
	"zettelstore.de/z/box"
	"zettelstore.de/z/box/manager/memstore"
	"zettelstore.de/z/box/manager/store"
	"zettelstore.de/z/config"
	"zettelstore.de/z/kernel"
	"zettelstore.de/z/logger"
	"zettelstore.de/z/strfun"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
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82



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89
// Register the encoder for later retrieval.
func Register(scheme string, create createFunc) {
	if _, ok := registry[scheme]; ok {
		panic(scheme)
	}
	registry[scheme] = create
}




// Manager is a coordinating box.
type Manager struct {
	mgrLog       *logger.Logger
	stateMx      sync.RWMutex
	state        box.StartState
	mgrMx        sync.RWMutex







>
>
>







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// Register the encoder for later retrieval.
func Register(scheme string, create createFunc) {
	if _, ok := registry[scheme]; ok {
		panic(scheme)
	}
	registry[scheme] = create
}

// GetSchemes returns all registered scheme, ordered by scheme string.
func GetSchemes() []string { return maps.Keys(registry) }

// Manager is a coordinating box.
type Manager struct {
	mgrLog       *logger.Logger
	stateMx      sync.RWMutex
	state        box.StartState
	mgrMx        sync.RWMutex
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	mgr := &Manager{
		mgrLog:       boxLog.Clone().Str("box", "manager").Child(),
		rtConfig:     rtConfig,
		infos:        make(chan box.UpdateInfo, len(boxURIs)*10),
		propertyKeys: propertyKeys,

		idxLog:   boxLog.Clone().Str("box", "index").Child(),
		idxStore: createIdxStore(rtConfig),
		idxAr:    newAnteroomQueue(1000),
		idxReady: make(chan struct{}, 1),
	}
	cdata := ConnectData{Number: 1, Config: rtConfig, Enricher: mgr, Notify: mgr.infos}
	boxes := make([]box.ManagedBox, 0, len(boxURIs)+2)
	for _, uri := range boxURIs {
		p, err := Connect(uri, authManager, &cdata)







|







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	mgr := &Manager{
		mgrLog:       boxLog.Clone().Str("box", "manager").Child(),
		rtConfig:     rtConfig,
		infos:        make(chan box.UpdateInfo, len(boxURIs)*10),
		propertyKeys: propertyKeys,

		idxLog:   boxLog.Clone().Str("box", "index").Child(),
		idxStore: memstore.New(),
		idxAr:    newAnteroomQueue(1000),
		idxReady: make(chan struct{}, 1),
	}
	cdata := ConnectData{Number: 1, Config: rtConfig, Enricher: mgr, Notify: mgr.infos}
	boxes := make([]box.ManagedBox, 0, len(boxURIs)+2)
	for _, uri := range boxURIs {
		p, err := Connect(uri, authManager, &cdata)
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	}
	cdata.Number++
	boxes = append(boxes, constbox, compbox)
	mgr.boxes = boxes
	return mgr, nil
}

func createIdxStore(_ config.Config) store.Store {
	return mapstore.New()
}

// RegisterObserver registers an observer that will be notified
// if a zettel was found to be changed.
func (mgr *Manager) RegisterObserver(f box.UpdateFunc) {
	if f != nil {
		mgr.mxObserver.Lock()
		mgr.observers = append(mgr.observers, f)
		mgr.mxObserver.Unlock()







<
<
<
<







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	}
	cdata.Number++
	boxes = append(boxes, constbox, compbox)
	mgr.boxes = boxes
	return mgr, nil
}





// RegisterObserver registers an observer that will be notified
// if a zettel was found to be changed.
func (mgr *Manager) RegisterObserver(f box.UpdateFunc) {
	if f != nil {
		mgr.mxObserver.Lock()
		mgr.observers = append(mgr.observers, f)
		mgr.mxObserver.Unlock()
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	case box.OnReady:
		return
	case box.OnReload:
		mgr.idxAr.Reset()
	case box.OnZettel:
		mgr.idxAr.EnqueueZettel(zid)
	default:
		mgr.mgrLog.Error().Uint("reason", uint64(reason)).Zid(zid).Msg("Unknown notification reason")
		return
	}
	select {
	case mgr.idxReady <- struct{}{}:
	default:
	}
}







|







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	case box.OnReady:
		return
	case box.OnReload:
		mgr.idxAr.Reset()
	case box.OnZettel:
		mgr.idxAr.EnqueueZettel(zid)
	default:
		mgr.mgrLog.Warn().Uint("reason", uint64(reason)).Zid(zid).Msg("Unknown notification reason")
		return
	}
	select {
	case mgr.idxReady <- struct{}{}:
	default:
	}
}
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func (mgr *Manager) waitBoxesAreStarted() {
	const waitTime = 10 * time.Millisecond
	const waitLoop = int(1 * time.Second / waitTime)
	for i := 1; !mgr.allBoxesStarted(); i++ {
		if i%waitLoop == 0 {
			if time.Duration(i)*waitTime > time.Minute {
				mgr.mgrLog.Info().Msg("Waiting for more than one minute to start")
			} else {
				mgr.mgrLog.Trace().Msg("Wait for boxes to start")
			}
		}
		time.Sleep(waitTime)
	}
}







|







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func (mgr *Manager) waitBoxesAreStarted() {
	const waitTime = 10 * time.Millisecond
	const waitLoop = int(1 * time.Second / waitTime)
	for i := 1; !mgr.allBoxesStarted(); i++ {
		if i%waitLoop == 0 {
			if time.Duration(i)*waitTime > time.Minute {
				mgr.mgrLog.Warn().Msg("Waiting for more than one minute to start")
			} else {
				mgr.mgrLog.Trace().Msg("Wait for boxes to start")
			}
		}
		time.Sleep(waitTime)
	}
}
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// ReIndex data of the given zettel.
func (mgr *Manager) ReIndex(_ context.Context, zid id.Zid) error {
	mgr.mgrLog.Debug().Msg("ReIndex")
	if mgr.State() != box.StartStateStarted {
		return box.ErrStopped
	}
	mgr.infos <- box.UpdateInfo{Reason: box.OnZettel, Zid: zid}
	return nil
}

// ReadStats populates st with box statistics.
func (mgr *Manager) ReadStats(st *box.Stats) {
	mgr.mgrLog.Debug().Msg("ReadStats")
	mgr.mgrMx.RLock()







|







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// ReIndex data of the given zettel.
func (mgr *Manager) ReIndex(_ context.Context, zid id.Zid) error {
	mgr.mgrLog.Debug().Msg("ReIndex")
	if mgr.State() != box.StartStateStarted {
		return box.ErrStopped
	}
	mgr.infos <- box.UpdateInfo{Reason: box.OnReload, Zid: zid}
	return nil
}

// ReadStats populates st with box statistics.
func (mgr *Manager) ReadStats(st *box.Stats) {
	mgr.mgrLog.Debug().Msg("ReadStats")
	mgr.mgrMx.RLock()

Deleted box/manager/mapstore/mapstore.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

// Package mapstore stored the index in main memory via a Go map.
package mapstore

import (
	"context"
	"fmt"
	"io"
	"sort"
	"strings"
	"sync"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/maps"
	"zettelstore.de/z/box"
	"zettelstore.de/z/box/manager/store"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

type zettelData struct {
	meta      *meta.Meta // a local copy of the metadata, without computed keys
	dead      id.Slice   // list of dead references in this zettel
	forward   id.Slice   // list of forward references in this zettel
	backward  id.Slice   // list of zettel that reference with zettel
	otherRefs map[string]bidiRefs
	words     []string // list of words of this zettel
	urls      []string // list of urls of this zettel
}

type bidiRefs struct {
	forward  id.Slice
	backward id.Slice
}

type stringRefs map[string]id.Slice

type memStore struct {
	mx     sync.RWMutex
	intern map[string]string // map to intern strings
	idx    map[id.Zid]*zettelData
	dead   map[id.Zid]id.Slice // map dead refs where they occur
	words  stringRefs
	urls   stringRefs

	// Stats
	mxStats sync.Mutex
	updates uint64
}

// New returns a new memory-based index store.
func New() store.Store {
	return &memStore{
		intern: make(map[string]string, 1024),
		idx:    make(map[id.Zid]*zettelData),
		dead:   make(map[id.Zid]id.Slice),
		words:  make(stringRefs),
		urls:   make(stringRefs),
	}
}

func (ms *memStore) GetMeta(_ context.Context, zid id.Zid) (*meta.Meta, error) {
	ms.mx.RLock()
	defer ms.mx.RUnlock()
	if zi, found := ms.idx[zid]; found && zi.meta != nil {
		// zi.meta is nil, if zettel was referenced, but is not indexed yet.
		return zi.meta.Clone(), nil
	}
	return nil, box.ErrZettelNotFound{Zid: zid}
}

func (ms *memStore) Enrich(_ context.Context, m *meta.Meta) {
	if ms.doEnrich(m) {
		ms.mxStats.Lock()
		ms.updates++
		ms.mxStats.Unlock()
	}
}

func (ms *memStore) doEnrich(m *meta.Meta) bool {
	ms.mx.RLock()
	defer ms.mx.RUnlock()
	zi, ok := ms.idx[m.Zid]
	if !ok {
		return false
	}
	var updated bool
	if len(zi.dead) > 0 {
		m.Set(api.KeyDead, zi.dead.String())
		updated = true
	}
	back := removeOtherMetaRefs(m, zi.backward.Clone())
	if len(zi.backward) > 0 {
		m.Set(api.KeyBackward, zi.backward.String())
		updated = true
	}
	if len(zi.forward) > 0 {
		m.Set(api.KeyForward, zi.forward.String())
		back = remRefs(back, zi.forward)
		updated = true
	}
	for k, refs := range zi.otherRefs {
		if len(refs.backward) > 0 {
			m.Set(k, refs.backward.String())
			back = remRefs(back, refs.backward)
			updated = true
		}
	}
	if len(back) > 0 {
		m.Set(api.KeyBack, back.String())
		updated = true
	}
	return updated
}

// SearchEqual returns all zettel that contains the given exact word.
// The word must be normalized through Unicode NKFD, trimmed and not empty.
func (ms *memStore) SearchEqual(word string) id.Set {
	ms.mx.RLock()
	defer ms.mx.RUnlock()
	result := id.NewSet()
	if refs, ok := ms.words[word]; ok {
		result.CopySlice(refs)
	}
	if refs, ok := ms.urls[word]; ok {
		result.CopySlice(refs)
	}
	zid, err := id.Parse(word)
	if err != nil {
		return result
	}
	zi, ok := ms.idx[zid]
	if !ok {
		return result
	}

	addBackwardZids(result, zid, zi)
	return result
}

// SearchPrefix returns all zettel that have a word with the given prefix.
// The prefix must be normalized through Unicode NKFD, trimmed and not empty.
func (ms *memStore) SearchPrefix(prefix string) id.Set {
	ms.mx.RLock()
	defer ms.mx.RUnlock()
	result := ms.selectWithPred(prefix, strings.HasPrefix)
	l := len(prefix)
	if l > 14 {
		return result
	}
	maxZid, err := id.Parse(prefix + "99999999999999"[:14-l])
	if err != nil {
		return result
	}
	var minZid id.Zid
	if l < 14 && prefix == "0000000000000"[:l] {
		minZid = id.Zid(1)
	} else {
		minZid, err = id.Parse(prefix + "00000000000000"[:14-l])
		if err != nil {
			return result
		}
	}
	for zid, zi := range ms.idx {
		if minZid <= zid && zid <= maxZid {
			addBackwardZids(result, zid, zi)
		}
	}
	return result
}

// SearchSuffix returns all zettel that have a word with the given suffix.
// The suffix must be normalized through Unicode NKFD, trimmed and not empty.
func (ms *memStore) SearchSuffix(suffix string) id.Set {
	ms.mx.RLock()
	defer ms.mx.RUnlock()
	result := ms.selectWithPred(suffix, strings.HasSuffix)
	l := len(suffix)
	if l > 14 {
		return result
	}
	val, err := id.ParseUint(suffix)
	if err != nil {
		return result
	}
	modulo := uint64(1)
	for range l {
		modulo *= 10
	}
	for zid, zi := range ms.idx {
		if uint64(zid)%modulo == val {
			addBackwardZids(result, zid, zi)
		}
	}
	return result
}

// SearchContains returns all zettel that contains the given string.
// The string must be normalized through Unicode NKFD, trimmed and not empty.
func (ms *memStore) SearchContains(s string) id.Set {
	ms.mx.RLock()
	defer ms.mx.RUnlock()
	result := ms.selectWithPred(s, strings.Contains)
	if len(s) > 14 {
		return result
	}
	if _, err := id.ParseUint(s); err != nil {
		return result
	}
	for zid, zi := range ms.idx {
		if strings.Contains(zid.String(), s) {
			addBackwardZids(result, zid, zi)
		}
	}
	return result
}

func (ms *memStore) selectWithPred(s string, pred func(string, string) bool) id.Set {
	// Must only be called if ms.mx is read-locked!
	result := id.NewSet()
	for word, refs := range ms.words {
		if !pred(word, s) {
			continue
		}
		result.CopySlice(refs)
	}
	for u, refs := range ms.urls {
		if !pred(u, s) {
			continue
		}
		result.CopySlice(refs)
	}
	return result
}

func addBackwardZids(result id.Set, zid id.Zid, zi *zettelData) {
	// Must only be called if ms.mx is read-locked!
	result.Add(zid)
	result.CopySlice(zi.backward)
	for _, mref := range zi.otherRefs {
		result.CopySlice(mref.backward)
	}
}

func removeOtherMetaRefs(m *meta.Meta, back id.Slice) id.Slice {
	for _, p := range m.PairsRest() {
		switch meta.Type(p.Key) {
		case meta.TypeID:
			if zid, err := id.Parse(p.Value); err == nil {
				back = remRef(back, zid)
			}
		case meta.TypeIDSet:
			for _, val := range meta.ListFromValue(p.Value) {
				if zid, err := id.Parse(val); err == nil {
					back = remRef(back, zid)
				}
			}
		}
	}
	return back
}

func (ms *memStore) UpdateReferences(_ context.Context, zidx *store.ZettelIndex) id.Set {
	ms.mx.Lock()
	defer ms.mx.Unlock()
	m := ms.makeMeta(zidx)
	zi, ziExist := ms.idx[zidx.Zid]
	if !ziExist || zi == nil {
		zi = &zettelData{}
		ziExist = false
	}

	// Is this zettel an old dead reference mentioned in other zettel?
	var toCheck id.Set
	if refs, ok := ms.dead[zidx.Zid]; ok {
		// These must be checked later again
		toCheck = id.NewSet(refs...)
		delete(ms.dead, zidx.Zid)
	}

	zi.meta = m
	ms.updateDeadReferences(zidx, zi)
	ids := ms.updateForwardBackwardReferences(zidx, zi)
	toCheck = toCheck.Copy(ids)
	ids = ms.updateMetadataReferences(zidx, zi)
	toCheck = toCheck.Copy(ids)
	zi.words = updateStrings(zidx.Zid, ms.words, zi.words, zidx.GetWords())
	zi.urls = updateStrings(zidx.Zid, ms.urls, zi.urls, zidx.GetUrls())

	// Check if zi must be inserted into ms.idx
	if !ziExist {
		ms.idx[zidx.Zid] = zi
	}

	return toCheck
}

var internableKeys = map[string]bool{
	api.KeyRole:      true,
	api.KeySyntax:    true,
	api.KeyFolgeRole: true,
	api.KeyLang:      true,
	api.KeyReadOnly:  true,
}

func isInternableValue(key string) bool {
	if internableKeys[key] {
		return true
	}
	return strings.HasSuffix(key, meta.SuffixKeyRole)
}

func (ms *memStore) internString(s string) string {
	if is, found := ms.intern[s]; found {
		return is
	}
	ms.intern[s] = s
	return s
}

func (ms *memStore) makeMeta(zidx *store.ZettelIndex) *meta.Meta {
	origM := zidx.GetMeta()
	copyM := meta.New(origM.Zid)
	for _, p := range origM.Pairs() {
		key := ms.internString(p.Key)
		if isInternableValue(key) {
			copyM.Set(key, ms.internString(p.Value))
		} else if key == api.KeyBoxNumber || !meta.IsComputed(key) {
			copyM.Set(key, p.Value)
		}
	}
	return copyM
}

func (ms *memStore) updateDeadReferences(zidx *store.ZettelIndex, zi *zettelData) {
	// Must only be called if ms.mx is write-locked!
	drefs := zidx.GetDeadRefs()
	newRefs, remRefs := refsDiff(drefs, zi.dead)
	zi.dead = drefs
	for _, ref := range remRefs {
		ms.dead[ref] = remRef(ms.dead[ref], zidx.Zid)
	}
	for _, ref := range newRefs {
		ms.dead[ref] = addRef(ms.dead[ref], zidx.Zid)
	}
}

func (ms *memStore) updateForwardBackwardReferences(zidx *store.ZettelIndex, zi *zettelData) id.Set {
	// Must only be called if ms.mx is write-locked!
	brefs := zidx.GetBackRefs()
	newRefs, remRefs := refsDiff(brefs, zi.forward)
	zi.forward = brefs

	var toCheck id.Set
	for _, ref := range remRefs {
		bzi := ms.getOrCreateEntry(ref)
		bzi.backward = remRef(bzi.backward, zidx.Zid)
		if bzi.meta == nil {
			toCheck = toCheck.Add(ref)
		}
	}
	for _, ref := range newRefs {
		bzi := ms.getOrCreateEntry(ref)
		bzi.backward = addRef(bzi.backward, zidx.Zid)
		if bzi.meta == nil {
			toCheck = toCheck.Add(ref)
		}
	}
	return toCheck
}

func (ms *memStore) updateMetadataReferences(zidx *store.ZettelIndex, zi *zettelData) id.Set {
	// Must only be called if ms.mx is write-locked!
	inverseRefs := zidx.GetInverseRefs()
	for key, mr := range zi.otherRefs {
		if _, ok := inverseRefs[key]; ok {
			continue
		}
		ms.removeInverseMeta(zidx.Zid, key, mr.forward)
	}
	if zi.otherRefs == nil {
		zi.otherRefs = make(map[string]bidiRefs)
	}
	var toCheck id.Set
	for key, mrefs := range inverseRefs {
		mr := zi.otherRefs[key]
		newRefs, remRefs := refsDiff(mrefs, mr.forward)
		mr.forward = mrefs
		zi.otherRefs[key] = mr

		for _, ref := range newRefs {
			bzi := ms.getOrCreateEntry(ref)
			if bzi.otherRefs == nil {
				bzi.otherRefs = make(map[string]bidiRefs)
			}
			bmr := bzi.otherRefs[key]
			bmr.backward = addRef(bmr.backward, zidx.Zid)
			bzi.otherRefs[key] = bmr
			if bzi.meta == nil {
				toCheck = toCheck.Add(ref)
			}
		}
		ms.removeInverseMeta(zidx.Zid, key, remRefs)
	}
	return toCheck
}

func updateStrings(zid id.Zid, srefs stringRefs, prev []string, next store.WordSet) []string {
	newWords, removeWords := next.Diff(prev)
	for _, word := range newWords {
		if refs, ok := srefs[word]; ok {
			srefs[word] = addRef(refs, zid)
			continue
		}
		srefs[word] = id.Slice{zid}
	}
	for _, word := range removeWords {
		refs, ok := srefs[word]
		if !ok {
			continue
		}
		refs2 := remRef(refs, zid)
		if len(refs2) == 0 {
			delete(srefs, word)
			continue
		}
		srefs[word] = refs2
	}
	return next.Words()
}

func (ms *memStore) getOrCreateEntry(zid id.Zid) *zettelData {
	// Must only be called if ms.mx is write-locked!
	if zi, ok := ms.idx[zid]; ok {
		return zi
	}
	zi := &zettelData{}
	ms.idx[zid] = zi
	return zi
}

func (ms *memStore) RenameZettel(_ context.Context, curZid, newZid id.Zid) id.Set {
	ms.mx.Lock()
	defer ms.mx.Unlock()

	curZi, curFound := ms.idx[curZid]
	_, newFound := ms.idx[newZid]
	if !curFound || newFound {
		return nil
	}
	newZi := &zettelData{
		meta:      copyMeta(curZi.meta, newZid),
		dead:      ms.copyDeadReferences(curZi.dead),
		forward:   ms.copyForward(curZi.forward, newZid),
		backward:  nil, // will be done through tocheck
		otherRefs: nil, // TODO: check if this will be done through toCheck
		words:     copyStrings(ms.words, curZi.words, newZid),
		urls:      copyStrings(ms.urls, curZi.urls, newZid),
	}

	ms.idx[newZid] = newZi
	toCheck := ms.doDeleteZettel(curZid)
	toCheck = toCheck.CopySlice(ms.dead[newZid])
	delete(ms.dead, newZid)
	toCheck = toCheck.Add(newZid) // should update otherRefs
	return toCheck
}
func copyMeta(m *meta.Meta, newZid id.Zid) *meta.Meta {
	result := m.Clone()
	result.Zid = newZid
	return result
}
func (ms *memStore) copyDeadReferences(curDead id.Slice) id.Slice {
	// Must only be called if ms.mx is write-locked!
	if l := len(curDead); l > 0 {
		result := make(id.Slice, l)
		for i, ref := range curDead {
			result[i] = ref
			ms.dead[ref] = addRef(ms.dead[ref], ref)
		}
		return result
	}
	return nil
}
func (ms *memStore) copyForward(curForward id.Slice, newZid id.Zid) id.Slice {
	// Must only be called if ms.mx is write-locked!
	if l := len(curForward); l > 0 {
		result := make(id.Slice, l)
		for i, ref := range curForward {
			result[i] = ref
			if fzi, found := ms.idx[ref]; found {
				fzi.backward = addRef(fzi.backward, newZid)
			}
		}
		return result
	}
	return nil
}
func copyStrings(msStringMap stringRefs, curStrings []string, newZid id.Zid) []string {
	// Must only be called if ms.mx is write-locked!
	if l := len(curStrings); l > 0 {
		result := make([]string, l)
		for i, s := range curStrings {
			result[i] = s
			msStringMap[s] = addRef(msStringMap[s], newZid)
		}
		return result
	}
	return nil
}

func (ms *memStore) DeleteZettel(_ context.Context, zid id.Zid) id.Set {
	ms.mx.Lock()
	defer ms.mx.Unlock()
	return ms.doDeleteZettel(zid)
}

func (ms *memStore) doDeleteZettel(zid id.Zid) id.Set {
	// Must only be called if ms.mx is write-locked!
	zi, ok := ms.idx[zid]
	if !ok {
		return nil
	}

	ms.deleteDeadSources(zid, zi)
	toCheck := ms.deleteForwardBackward(zid, zi)
	for key, mrefs := range zi.otherRefs {
		ms.removeInverseMeta(zid, key, mrefs.forward)
	}
	deleteStrings(ms.words, zi.words, zid)
	deleteStrings(ms.urls, zi.urls, zid)
	delete(ms.idx, zid)
	return toCheck
}

func (ms *memStore) deleteDeadSources(zid id.Zid, zi *zettelData) {
	// Must only be called if ms.mx is write-locked!
	for _, ref := range zi.dead {
		if drefs, ok := ms.dead[ref]; ok {
			drefs = remRef(drefs, zid)
			if len(drefs) > 0 {
				ms.dead[ref] = drefs
			} else {
				delete(ms.dead, ref)
			}
		}
	}
}

func (ms *memStore) deleteForwardBackward(zid id.Zid, zi *zettelData) id.Set {
	// Must only be called if ms.mx is write-locked!
	for _, ref := range zi.forward {
		if fzi, ok := ms.idx[ref]; ok {
			fzi.backward = remRef(fzi.backward, zid)
		}
	}
	var toCheck id.Set
	for _, ref := range zi.backward {
		if bzi, ok := ms.idx[ref]; ok {
			bzi.forward = remRef(bzi.forward, zid)
			toCheck = toCheck.Add(ref)
		}
	}
	return toCheck
}

func (ms *memStore) removeInverseMeta(zid id.Zid, key string, forward id.Slice) {
	// Must only be called if ms.mx is write-locked!
	for _, ref := range forward {
		bzi, ok := ms.idx[ref]
		if !ok || bzi.otherRefs == nil {
			continue
		}
		bmr, ok := bzi.otherRefs[key]
		if !ok {
			continue
		}
		bmr.backward = remRef(bmr.backward, zid)
		if len(bmr.backward) > 0 || len(bmr.forward) > 0 {
			bzi.otherRefs[key] = bmr
		} else {
			delete(bzi.otherRefs, key)
			if len(bzi.otherRefs) == 0 {
				bzi.otherRefs = nil
			}
		}
	}
}

func deleteStrings(msStringMap stringRefs, curStrings []string, zid id.Zid) {
	// Must only be called if ms.mx is write-locked!
	for _, word := range curStrings {
		refs, ok := msStringMap[word]
		if !ok {
			continue
		}
		refs2 := remRef(refs, zid)
		if len(refs2) == 0 {
			delete(msStringMap, word)
			continue
		}
		msStringMap[word] = refs2
	}
}

func (ms *memStore) ReadStats(st *store.Stats) {
	ms.mx.RLock()
	st.Zettel = len(ms.idx)
	st.Words = uint64(len(ms.words))
	st.Urls = uint64(len(ms.urls))
	ms.mx.RUnlock()
	ms.mxStats.Lock()
	st.Updates = ms.updates
	ms.mxStats.Unlock()
}

func (ms *memStore) Dump(w io.Writer) {
	ms.mx.RLock()
	defer ms.mx.RUnlock()

	io.WriteString(w, "=== Dump\n")
	ms.dumpIndex(w)
	ms.dumpDead(w)
	dumpStringRefs(w, "Words", "", "", ms.words)
	dumpStringRefs(w, "URLs", "[[", "]]", ms.urls)
}

func (ms *memStore) dumpIndex(w io.Writer) {
	if len(ms.idx) == 0 {
		return
	}
	io.WriteString(w, "==== Zettel Index\n")
	zids := make(id.Slice, 0, len(ms.idx))
	for id := range ms.idx {
		zids = append(zids, id)
	}
	zids.Sort()
	for _, id := range zids {
		fmt.Fprintln(w, "=====", id)
		zi := ms.idx[id]
		if len(zi.dead) > 0 {
			fmt.Fprintln(w, "* Dead:", zi.dead)
		}
		dumpZids(w, "* Forward:", zi.forward)
		dumpZids(w, "* Backward:", zi.backward)
		for k, fb := range zi.otherRefs {
			fmt.Fprintln(w, "* Meta", k)
			dumpZids(w, "** Forward:", fb.forward)
			dumpZids(w, "** Backward:", fb.backward)
		}
		dumpStrings(w, "* Words", "", "", zi.words)
		dumpStrings(w, "* URLs", "[[", "]]", zi.urls)
	}
}

func (ms *memStore) dumpDead(w io.Writer) {
	if len(ms.dead) == 0 {
		return
	}
	fmt.Fprintf(w, "==== Dead References\n")
	zids := make(id.Slice, 0, len(ms.dead))
	for id := range ms.dead {
		zids = append(zids, id)
	}
	zids.Sort()
	for _, id := range zids {
		fmt.Fprintln(w, ";", id)
		fmt.Fprintln(w, ":", ms.dead[id])
	}
}

func dumpZids(w io.Writer, prefix string, zids id.Slice) {
	if len(zids) > 0 {
		io.WriteString(w, prefix)
		for _, zid := range zids {
			io.WriteString(w, " ")
			w.Write(zid.Bytes())
		}
		fmt.Fprintln(w)
	}
}

func dumpStrings(w io.Writer, title, preString, postString string, slice []string) {
	if len(slice) > 0 {
		sl := make([]string, len(slice))
		copy(sl, slice)
		sort.Strings(sl)
		fmt.Fprintln(w, title)
		for _, s := range sl {
			fmt.Fprintf(w, "** %s%s%s\n", preString, s, postString)
		}
	}

}

func dumpStringRefs(w io.Writer, title, preString, postString string, srefs stringRefs) {
	if len(srefs) == 0 {
		return
	}
	fmt.Fprintln(w, "====", title)
	for _, s := range maps.Keys(srefs) {
		fmt.Fprintf(w, "; %s%s%s\n", preString, s, postString)
		fmt.Fprintln(w, ":", srefs[s])
	}
}
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Deleted box/manager/mapstore/refs.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package mapstore

import (
	"slices"

	"zettelstore.de/z/zettel/id"
)

func refsDiff(refsN, refsO id.Slice) (newRefs, remRefs id.Slice) {
	npos, opos := 0, 0
	for npos < len(refsN) && opos < len(refsO) {
		rn, ro := refsN[npos], refsO[opos]
		if rn == ro {
			npos++
			opos++
			continue
		}
		if rn < ro {
			newRefs = append(newRefs, rn)
			npos++
			continue
		}
		remRefs = append(remRefs, ro)
		opos++
	}
	if npos < len(refsN) {
		newRefs = append(newRefs, refsN[npos:]...)
	}
	if opos < len(refsO) {
		remRefs = append(remRefs, refsO[opos:]...)
	}
	return newRefs, remRefs
}

func addRef(refs id.Slice, ref id.Zid) id.Slice {
	hi := len(refs)
	for lo := 0; lo < hi; {
		m := lo + (hi-lo)/2
		if r := refs[m]; r == ref {
			return refs
		} else if r < ref {
			lo = m + 1
		} else {
			hi = m
		}
	}
	refs = slices.Insert(refs, hi, ref)
	return refs
}

func remRefs(refs, rem id.Slice) id.Slice {
	if len(refs) == 0 || len(rem) == 0 {
		return refs
	}
	result := make(id.Slice, 0, len(refs))
	rpos, dpos := 0, 0
	for rpos < len(refs) && dpos < len(rem) {
		rr, dr := refs[rpos], rem[dpos]
		if rr < dr {
			result = append(result, rr)
			rpos++
			continue
		}
		if dr < rr {
			dpos++
			continue
		}
		rpos++
		dpos++
	}
	if rpos < len(refs) {
		result = append(result, refs[rpos:]...)
	}
	return result
}

func remRef(refs id.Slice, ref id.Zid) id.Slice {
	hi := len(refs)
	for lo := 0; lo < hi; {
		m := lo + (hi-lo)/2
		if r := refs[m]; r == ref {
			copy(refs[m:], refs[m+1:])
			refs = refs[:len(refs)-1]
			return refs
		} else if r < ref {
			lo = m + 1
		} else {
			hi = m
		}
	}
	return refs
}
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Deleted box/manager/mapstore/refs_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package mapstore

import (
	"testing"

	"zettelstore.de/z/zettel/id"
)

func assertRefs(t *testing.T, i int, got, exp id.Slice) {
	t.Helper()
	if got == nil && exp != nil {
		t.Errorf("%d: got nil, but expected %v", i, exp)
		return
	}
	if got != nil && exp == nil {
		t.Errorf("%d: expected nil, but got %v", i, got)
		return
	}
	if len(got) != len(exp) {
		t.Errorf("%d: expected len(%v)==%d, but got len(%v)==%d", i, exp, len(exp), got, len(got))
		return
	}
	for p, n := range exp {
		if got := got[p]; got != id.Zid(n) {
			t.Errorf("%d: pos %d: expected %d, but got %d", i, p, n, got)
		}
	}
}

func TestRefsDiff(t *testing.T) {
	t.Parallel()
	testcases := []struct {
		in1, in2   id.Slice
		exp1, exp2 id.Slice
	}{
		{nil, nil, nil, nil},
		{id.Slice{1}, nil, id.Slice{1}, nil},
		{nil, id.Slice{1}, nil, id.Slice{1}},
		{id.Slice{1}, id.Slice{1}, nil, nil},
		{id.Slice{1, 2}, id.Slice{1}, id.Slice{2}, nil},
		{id.Slice{1, 2}, id.Slice{1, 3}, id.Slice{2}, id.Slice{3}},
		{id.Slice{1, 4}, id.Slice{1, 3}, id.Slice{4}, id.Slice{3}},
	}
	for i, tc := range testcases {
		got1, got2 := refsDiff(tc.in1, tc.in2)
		assertRefs(t, i, got1, tc.exp1)
		assertRefs(t, i, got2, tc.exp2)
	}
}

func TestAddRef(t *testing.T) {
	t.Parallel()
	testcases := []struct {
		ref id.Slice
		zid uint
		exp id.Slice
	}{
		{nil, 5, id.Slice{5}},
		{id.Slice{1}, 5, id.Slice{1, 5}},
		{id.Slice{10}, 5, id.Slice{5, 10}},
		{id.Slice{5}, 5, id.Slice{5}},
		{id.Slice{1, 10}, 5, id.Slice{1, 5, 10}},
		{id.Slice{1, 5, 10}, 5, id.Slice{1, 5, 10}},
	}
	for i, tc := range testcases {
		got := addRef(tc.ref, id.Zid(tc.zid))
		assertRefs(t, i, got, tc.exp)
	}
}

func TestRemRefs(t *testing.T) {
	t.Parallel()
	testcases := []struct {
		in1, in2 id.Slice
		exp      id.Slice
	}{
		{nil, nil, nil},
		{nil, id.Slice{}, nil},
		{id.Slice{}, nil, id.Slice{}},
		{id.Slice{}, id.Slice{}, id.Slice{}},
		{id.Slice{1}, id.Slice{5}, id.Slice{1}},
		{id.Slice{10}, id.Slice{5}, id.Slice{10}},
		{id.Slice{1, 5}, id.Slice{5}, id.Slice{1}},
		{id.Slice{5, 10}, id.Slice{5}, id.Slice{10}},
		{id.Slice{1, 10}, id.Slice{5}, id.Slice{1, 10}},
		{id.Slice{1}, id.Slice{2, 5}, id.Slice{1}},
		{id.Slice{10}, id.Slice{2, 5}, id.Slice{10}},
		{id.Slice{1, 5}, id.Slice{2, 5}, id.Slice{1}},
		{id.Slice{5, 10}, id.Slice{2, 5}, id.Slice{10}},
		{id.Slice{1, 2, 5}, id.Slice{2, 5}, id.Slice{1}},
		{id.Slice{2, 5, 10}, id.Slice{2, 5}, id.Slice{10}},
		{id.Slice{1, 10}, id.Slice{2, 5}, id.Slice{1, 10}},
		{id.Slice{1}, id.Slice{5, 9}, id.Slice{1}},
		{id.Slice{10}, id.Slice{5, 9}, id.Slice{10}},
		{id.Slice{1, 5}, id.Slice{5, 9}, id.Slice{1}},
		{id.Slice{5, 10}, id.Slice{5, 9}, id.Slice{10}},
		{id.Slice{1, 5, 9}, id.Slice{5, 9}, id.Slice{1}},
		{id.Slice{5, 9, 10}, id.Slice{5, 9}, id.Slice{10}},
		{id.Slice{1, 10}, id.Slice{5, 9}, id.Slice{1, 10}},
	}
	for i, tc := range testcases {
		got := remRefs(tc.in1, tc.in2)
		assertRefs(t, i, got, tc.exp)
	}
}

func TestRemRef(t *testing.T) {
	t.Parallel()
	testcases := []struct {
		ref id.Slice
		zid uint
		exp id.Slice
	}{
		{nil, 5, nil},
		{id.Slice{}, 5, id.Slice{}},
		{id.Slice{5}, 5, id.Slice{}},
		{id.Slice{1}, 5, id.Slice{1}},
		{id.Slice{10}, 5, id.Slice{10}},
		{id.Slice{1, 5}, 5, id.Slice{1}},
		{id.Slice{5, 10}, 5, id.Slice{10}},
		{id.Slice{1, 5, 10}, 5, id.Slice{1, 10}},
	}
	for i, tc := range testcases {
		got := remRef(tc.ref, id.Zid(tc.zid))
		assertRefs(t, i, got, tc.exp)
	}
}
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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//-----------------------------------------------------------------------------

// Package memstore stored the index in main memory.
package memstore

import (
	"context"
	"fmt"
	"io"
	"sort"
	"strings"
	"sync"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/maps"
	"zettelstore.de/z/box"
	"zettelstore.de/z/box/manager/store"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

type bidiRefs struct {
	forward  id.Slice
	backward id.Slice
}

type zettelData struct {
	meta      *meta.Meta // a local copy of the metadata, without computed keys
	dead      id.Slice   // list of dead references in this zettel
	forward   id.Slice   // list of forward references in this zettel
	backward  id.Slice   // list of zettel that reference with zettel
	otherRefs map[string]bidiRefs
	words     []string // list of words of this zettel
	urls      []string // list of urls of this zettel
}

type stringRefs map[string]id.Slice

type memStore struct {
	mx     sync.RWMutex
	intern map[string]string // map to intern strings
	idx    map[id.Zid]*zettelData
	dead   map[id.Zid]id.Slice // map dead refs where they occur
	words  stringRefs
	urls   stringRefs

	// Stats
	mxStats sync.Mutex
	updates uint64
}

// New returns a new memory-based index store.
func New() store.Store {
	return &memStore{
		intern: make(map[string]string, 1024),
		idx:    make(map[id.Zid]*zettelData),
		dead:   make(map[id.Zid]id.Slice),
		words:  make(stringRefs),
		urls:   make(stringRefs),
	}
}

func (ms *memStore) GetMeta(_ context.Context, zid id.Zid) (*meta.Meta, error) {
	ms.mx.RLock()
	defer ms.mx.RUnlock()
	if zi, found := ms.idx[zid]; found && zi.meta != nil {
		// zi.meta is nil, if zettel was referenced, but is not indexed yet.
		return zi.meta.Clone(), nil
	}
	return nil, box.ErrZettelNotFound{Zid: zid}
}

func (ms *memStore) Enrich(_ context.Context, m *meta.Meta) {
	if ms.doEnrich(m) {
		ms.mxStats.Lock()
		ms.updates++
		ms.mxStats.Unlock()
	}
}

func (ms *memStore) doEnrich(m *meta.Meta) bool {
	ms.mx.RLock()
	defer ms.mx.RUnlock()
	zi, ok := ms.idx[m.Zid]
	if !ok {
		return false
	}
	var updated bool
	if len(zi.dead) > 0 {
		m.Set(api.KeyDead, zi.dead.String())
		updated = true
	}
	back := removeOtherMetaRefs(m, zi.backward.Clone())
	if len(zi.backward) > 0 {
		m.Set(api.KeyBackward, zi.backward.String())
		updated = true
	}
	if len(zi.forward) > 0 {
		m.Set(api.KeyForward, zi.forward.String())
		back = remRefs(back, zi.forward)
		updated = true
	}
	for k, refs := range zi.otherRefs {
		if len(refs.backward) > 0 {
			m.Set(k, refs.backward.String())
			back = remRefs(back, refs.backward)
			updated = true
		}
	}
	if len(back) > 0 {
		m.Set(api.KeyBack, back.String())
		updated = true
	}
	return updated
}

// SearchEqual returns all zettel that contains the given exact word.
// The word must be normalized through Unicode NKFD, trimmed and not empty.
func (ms *memStore) SearchEqual(word string) id.Set {
	ms.mx.RLock()
	defer ms.mx.RUnlock()
	result := id.NewSet()
	if refs, ok := ms.words[word]; ok {
		result.CopySlice(refs)
	}
	if refs, ok := ms.urls[word]; ok {
		result.CopySlice(refs)
	}
	zid, err := id.Parse(word)
	if err != nil {
		return result
	}
	zi, ok := ms.idx[zid]
	if !ok {
		return result
	}

	addBackwardZids(result, zid, zi)
	return result
}

// SearchPrefix returns all zettel that have a word with the given prefix.
// The prefix must be normalized through Unicode NKFD, trimmed and not empty.
func (ms *memStore) SearchPrefix(prefix string) id.Set {
	ms.mx.RLock()
	defer ms.mx.RUnlock()
	result := ms.selectWithPred(prefix, strings.HasPrefix)
	l := len(prefix)
	if l > 14 {
		return result
	}
	maxZid, err := id.Parse(prefix + "99999999999999"[:14-l])
	if err != nil {
		return result
	}
	var minZid id.Zid
	if l < 14 && prefix == "0000000000000"[:l] {
		minZid = id.Zid(1)
	} else {
		minZid, err = id.Parse(prefix + "00000000000000"[:14-l])
		if err != nil {
			return result
		}
	}
	for zid, zi := range ms.idx {
		if minZid <= zid && zid <= maxZid {
			addBackwardZids(result, zid, zi)
		}
	}
	return result
}

// SearchSuffix returns all zettel that have a word with the given suffix.
// The suffix must be normalized through Unicode NKFD, trimmed and not empty.
func (ms *memStore) SearchSuffix(suffix string) id.Set {
	ms.mx.RLock()
	defer ms.mx.RUnlock()
	result := ms.selectWithPred(suffix, strings.HasSuffix)
	l := len(suffix)
	if l > 14 {
		return result
	}
	val, err := id.ParseUint(suffix)
	if err != nil {
		return result
	}
	modulo := uint64(1)
	for i := 0; i < l; i++ {
		modulo *= 10
	}
	for zid, zi := range ms.idx {
		if uint64(zid)%modulo == val {
			addBackwardZids(result, zid, zi)
		}
	}
	return result
}

// SearchContains returns all zettel that contains the given string.
// The string must be normalized through Unicode NKFD, trimmed and not empty.
func (ms *memStore) SearchContains(s string) id.Set {
	ms.mx.RLock()
	defer ms.mx.RUnlock()
	result := ms.selectWithPred(s, strings.Contains)
	if len(s) > 14 {
		return result
	}
	if _, err := id.ParseUint(s); err != nil {
		return result
	}
	for zid, zi := range ms.idx {
		if strings.Contains(zid.String(), s) {
			addBackwardZids(result, zid, zi)
		}
	}
	return result
}

func (ms *memStore) selectWithPred(s string, pred func(string, string) bool) id.Set {
	// Must only be called if ms.mx is read-locked!
	result := id.NewSet()
	for word, refs := range ms.words {
		if !pred(word, s) {
			continue
		}
		result.CopySlice(refs)
	}
	for u, refs := range ms.urls {
		if !pred(u, s) {
			continue
		}
		result.CopySlice(refs)
	}
	return result
}

func addBackwardZids(result id.Set, zid id.Zid, zi *zettelData) {
	// Must only be called if ms.mx is read-locked!
	result.Add(zid)
	result.CopySlice(zi.backward)
	for _, mref := range zi.otherRefs {
		result.CopySlice(mref.backward)
	}
}

func removeOtherMetaRefs(m *meta.Meta, back id.Slice) id.Slice {
	for _, p := range m.PairsRest() {
		switch meta.Type(p.Key) {
		case meta.TypeID:
			if zid, err := id.Parse(p.Value); err == nil {
				back = remRef(back, zid)
			}
		case meta.TypeIDSet:
			for _, val := range meta.ListFromValue(p.Value) {
				if zid, err := id.Parse(val); err == nil {
					back = remRef(back, zid)
				}
			}
		}
	}
	return back
}

func (ms *memStore) UpdateReferences(_ context.Context, zidx *store.ZettelIndex) id.Set {
	ms.mx.Lock()
	defer ms.mx.Unlock()
	m := ms.makeMeta(zidx)
	zi, ziExist := ms.idx[zidx.Zid]
	if !ziExist || zi == nil {
		zi = &zettelData{}
		ziExist = false
	}

	// Is this zettel an old dead reference mentioned in other zettel?
	var toCheck id.Set
	if refs, ok := ms.dead[zidx.Zid]; ok {
		// These must be checked later again
		toCheck = id.NewSet(refs...)
		delete(ms.dead, zidx.Zid)
	}

	zi.meta = m
	ms.updateDeadReferences(zidx, zi)
	ids := ms.updateForwardBackwardReferences(zidx, zi)
	toCheck = toCheck.Copy(ids)
	ids = ms.updateMetadataReferences(zidx, zi)
	toCheck = toCheck.Copy(ids)
	zi.words = updateStrings(zidx.Zid, ms.words, zi.words, zidx.GetWords())
	zi.urls = updateStrings(zidx.Zid, ms.urls, zi.urls, zidx.GetUrls())

	// Check if zi must be inserted into ms.idx
	if !ziExist {
		ms.idx[zidx.Zid] = zi
	}

	return toCheck
}

var internableKeys = map[string]bool{
	api.KeyRole:      true,
	api.KeySyntax:    true,
	api.KeyFolgeRole: true,
	api.KeyLang:      true,
	api.KeyReadOnly:  true,
}

func isInternableValue(key string) bool {
	if internableKeys[key] {
		return true
	}
	return strings.HasSuffix(key, "-role")
}

func (ms *memStore) internString(s string) string {
	if is, found := ms.intern[s]; found {
		return is
	}
	ms.intern[s] = s
	return s
}

func (ms *memStore) makeMeta(zidx *store.ZettelIndex) *meta.Meta {
	origM := zidx.GetMeta()
	copyM := meta.New(origM.Zid)
	for _, p := range origM.Pairs() {
		key := ms.internString(p.Key)
		if isInternableValue(key) {
			copyM.Set(key, ms.internString(p.Value))
		} else if key == api.KeyBoxNumber || !meta.IsComputed(key) {
			copyM.Set(key, p.Value)
		}
	}
	return copyM
}

func (ms *memStore) updateDeadReferences(zidx *store.ZettelIndex, zi *zettelData) {
	// Must only be called if ms.mx is write-locked!
	drefs := zidx.GetDeadRefs()
	newRefs, remRefs := refsDiff(drefs, zi.dead)
	zi.dead = drefs
	for _, ref := range remRefs {
		ms.dead[ref] = remRef(ms.dead[ref], zidx.Zid)
	}
	for _, ref := range newRefs {
		ms.dead[ref] = addRef(ms.dead[ref], zidx.Zid)
	}
}

func (ms *memStore) updateForwardBackwardReferences(zidx *store.ZettelIndex, zi *zettelData) id.Set {
	// Must only be called if ms.mx is write-locked!
	brefs := zidx.GetBackRefs()
	newRefs, remRefs := refsDiff(brefs, zi.forward)
	zi.forward = brefs

	var toCheck id.Set
	for _, ref := range remRefs {
		bzi := ms.getOrCreateEntry(ref)
		bzi.backward = remRef(bzi.backward, zidx.Zid)
		if bzi.meta == nil {
			toCheck = toCheck.Add(ref)
		}
	}
	for _, ref := range newRefs {
		bzi := ms.getOrCreateEntry(ref)
		bzi.backward = addRef(bzi.backward, zidx.Zid)
		if bzi.meta == nil {
			toCheck = toCheck.Add(ref)
		}
	}
	return toCheck
}

func (ms *memStore) updateMetadataReferences(zidx *store.ZettelIndex, zi *zettelData) id.Set {
	// Must only be called if ms.mx is write-locked!
	inverseRefs := zidx.GetInverseRefs()
	for key, mr := range zi.otherRefs {
		if _, ok := inverseRefs[key]; ok {
			continue
		}
		ms.removeInverseMeta(zidx.Zid, key, mr.forward)
	}
	if zi.otherRefs == nil {
		zi.otherRefs = make(map[string]bidiRefs)
	}
	var toCheck id.Set
	for key, mrefs := range inverseRefs {
		mr := zi.otherRefs[key]
		newRefs, remRefs := refsDiff(mrefs, mr.forward)
		mr.forward = mrefs
		zi.otherRefs[key] = mr

		for _, ref := range newRefs {
			bzi := ms.getOrCreateEntry(ref)
			if bzi.otherRefs == nil {
				bzi.otherRefs = make(map[string]bidiRefs)
			}
			bmr := bzi.otherRefs[key]
			bmr.backward = addRef(bmr.backward, zidx.Zid)
			bzi.otherRefs[key] = bmr
			if bzi.meta == nil {
				toCheck = toCheck.Add(ref)
			}
		}
		ms.removeInverseMeta(zidx.Zid, key, remRefs)
	}
	return toCheck
}

func updateStrings(zid id.Zid, srefs stringRefs, prev []string, next store.WordSet) []string {
	newWords, removeWords := next.Diff(prev)
	for _, word := range newWords {
		if refs, ok := srefs[word]; ok {
			srefs[word] = addRef(refs, zid)
			continue
		}
		srefs[word] = id.Slice{zid}
	}
	for _, word := range removeWords {
		refs, ok := srefs[word]
		if !ok {
			continue
		}
		refs2 := remRef(refs, zid)
		if len(refs2) == 0 {
			delete(srefs, word)
			continue
		}
		srefs[word] = refs2
	}
	return next.Words()
}

func (ms *memStore) getOrCreateEntry(zid id.Zid) *zettelData {
	// Must only be called if ms.mx is write-locked!
	if zi, ok := ms.idx[zid]; ok {
		return zi
	}
	zi := &zettelData{}
	ms.idx[zid] = zi
	return zi
}

func (ms *memStore) RenameZettel(_ context.Context, curZid, newZid id.Zid) id.Set {
	ms.mx.Lock()
	defer ms.mx.Unlock()

	curZi, curFound := ms.idx[curZid]
	_, newFound := ms.idx[newZid]
	if !curFound || newFound {
		return nil
	}
	newZi := &zettelData{
		meta:      copyMeta(curZi.meta, newZid),
		dead:      ms.copyDeadReferences(curZi.dead),
		forward:   ms.copyForward(curZi.forward, newZid),
		backward:  nil, // will be done through tocheck
		otherRefs: nil, // TODO: check if this will be done through toCheck
		words:     copyStrings(ms.words, curZi.words, newZid),
		urls:      copyStrings(ms.urls, curZi.urls, newZid),
	}

	ms.idx[newZid] = newZi
	toCheck := ms.doDeleteZettel(curZid)
	toCheck = toCheck.CopySlice(ms.dead[newZid])
	delete(ms.dead, newZid)
	toCheck = toCheck.Add(newZid) // should update otherRefs
	return toCheck
}
func copyMeta(m *meta.Meta, newZid id.Zid) *meta.Meta {
	result := m.Clone()
	result.Zid = newZid
	return result
}
func (ms *memStore) copyDeadReferences(curDead id.Slice) id.Slice {
	// Must only be called if ms.mx is write-locked!
	if l := len(curDead); l > 0 {
		result := make(id.Slice, l)
		for i, ref := range curDead {
			result[i] = ref
			ms.dead[ref] = addRef(ms.dead[ref], ref)
		}
		return result
	}
	return nil
}
func (ms *memStore) copyForward(curForward id.Slice, newZid id.Zid) id.Slice {
	// Must only be called if ms.mx is write-locked!
	if l := len(curForward); l > 0 {
		result := make(id.Slice, l)
		for i, ref := range curForward {
			result[i] = ref
			if fzi, found := ms.idx[ref]; found {
				fzi.backward = addRef(fzi.backward, newZid)
			}
		}
		return result
	}
	return nil
}
func copyStrings(msStringMap stringRefs, curStrings []string, newZid id.Zid) []string {
	// Must only be called if ms.mx is write-locked!
	if l := len(curStrings); l > 0 {
		result := make([]string, l)
		for i, s := range curStrings {
			result[i] = s
			msStringMap[s] = addRef(msStringMap[s], newZid)
		}
		return result
	}
	return nil
}

func (ms *memStore) DeleteZettel(_ context.Context, zid id.Zid) id.Set {
	ms.mx.Lock()
	defer ms.mx.Unlock()
	return ms.doDeleteZettel(zid)
}

func (ms *memStore) doDeleteZettel(zid id.Zid) id.Set {
	// Must only be called if ms.mx is write-locked!
	zi, ok := ms.idx[zid]
	if !ok {
		return nil
	}

	ms.deleteDeadSources(zid, zi)
	toCheck := ms.deleteForwardBackward(zid, zi)
	for key, mrefs := range zi.otherRefs {
		ms.removeInverseMeta(zid, key, mrefs.forward)
	}
	deleteStrings(ms.words, zi.words, zid)
	deleteStrings(ms.urls, zi.urls, zid)
	delete(ms.idx, zid)
	return toCheck
}

func (ms *memStore) deleteDeadSources(zid id.Zid, zi *zettelData) {
	// Must only be called if ms.mx is write-locked!
	for _, ref := range zi.dead {
		if drefs, ok := ms.dead[ref]; ok {
			drefs = remRef(drefs, zid)
			if len(drefs) > 0 {
				ms.dead[ref] = drefs
			} else {
				delete(ms.dead, ref)
			}
		}
	}
}

func (ms *memStore) deleteForwardBackward(zid id.Zid, zi *zettelData) id.Set {
	// Must only be called if ms.mx is write-locked!
	for _, ref := range zi.forward {
		if fzi, ok := ms.idx[ref]; ok {
			fzi.backward = remRef(fzi.backward, zid)
		}
	}
	var toCheck id.Set
	for _, ref := range zi.backward {
		if bzi, ok := ms.idx[ref]; ok {
			bzi.forward = remRef(bzi.forward, zid)
			toCheck = toCheck.Add(ref)
		}
	}
	return toCheck
}

func (ms *memStore) removeInverseMeta(zid id.Zid, key string, forward id.Slice) {
	// Must only be called if ms.mx is write-locked!
	for _, ref := range forward {
		bzi, ok := ms.idx[ref]
		if !ok || bzi.otherRefs == nil {
			continue
		}
		bmr, ok := bzi.otherRefs[key]
		if !ok {
			continue
		}
		bmr.backward = remRef(bmr.backward, zid)
		if len(bmr.backward) > 0 || len(bmr.forward) > 0 {
			bzi.otherRefs[key] = bmr
		} else {
			delete(bzi.otherRefs, key)
			if len(bzi.otherRefs) == 0 {
				bzi.otherRefs = nil
			}
		}
	}
}

func deleteStrings(msStringMap stringRefs, curStrings []string, zid id.Zid) {
	// Must only be called if ms.mx is write-locked!
	for _, word := range curStrings {
		refs, ok := msStringMap[word]
		if !ok {
			continue
		}
		refs2 := remRef(refs, zid)
		if len(refs2) == 0 {
			delete(msStringMap, word)
			continue
		}
		msStringMap[word] = refs2
	}
}

func (ms *memStore) ReadStats(st *store.Stats) {
	ms.mx.RLock()
	st.Zettel = len(ms.idx)
	st.Words = uint64(len(ms.words))
	st.Urls = uint64(len(ms.urls))
	ms.mx.RUnlock()
	ms.mxStats.Lock()
	st.Updates = ms.updates
	ms.mxStats.Unlock()
}

func (ms *memStore) Dump(w io.Writer) {
	ms.mx.RLock()
	defer ms.mx.RUnlock()

	io.WriteString(w, "=== Dump\n")
	ms.dumpIndex(w)
	ms.dumpDead(w)
	dumpStringRefs(w, "Words", "", "", ms.words)
	dumpStringRefs(w, "URLs", "[[", "]]", ms.urls)
}

func (ms *memStore) dumpIndex(w io.Writer) {
	if len(ms.idx) == 0 {
		return
	}
	io.WriteString(w, "==== Zettel Index\n")
	zids := make(id.Slice, 0, len(ms.idx))
	for id := range ms.idx {
		zids = append(zids, id)
	}
	zids.Sort()
	for _, id := range zids {
		fmt.Fprintln(w, "=====", id)
		zi := ms.idx[id]
		if len(zi.dead) > 0 {
			fmt.Fprintln(w, "* Dead:", zi.dead)
		}
		dumpZids(w, "* Forward:", zi.forward)
		dumpZids(w, "* Backward:", zi.backward)
		for k, fb := range zi.otherRefs {
			fmt.Fprintln(w, "* Meta", k)
			dumpZids(w, "** Forward:", fb.forward)
			dumpZids(w, "** Backward:", fb.backward)
		}
		dumpStrings(w, "* Words", "", "", zi.words)
		dumpStrings(w, "* URLs", "[[", "]]", zi.urls)
	}
}

func (ms *memStore) dumpDead(w io.Writer) {
	if len(ms.dead) == 0 {
		return
	}
	fmt.Fprintf(w, "==== Dead References\n")
	zids := make(id.Slice, 0, len(ms.dead))
	for id := range ms.dead {
		zids = append(zids, id)
	}
	zids.Sort()
	for _, id := range zids {
		fmt.Fprintln(w, ";", id)
		fmt.Fprintln(w, ":", ms.dead[id])
	}
}

func dumpZids(w io.Writer, prefix string, zids id.Slice) {
	if len(zids) > 0 {
		io.WriteString(w, prefix)
		for _, zid := range zids {
			io.WriteString(w, " ")
			w.Write(zid.Bytes())
		}
		fmt.Fprintln(w)
	}
}

func dumpStrings(w io.Writer, title, preString, postString string, slice []string) {
	if len(slice) > 0 {
		sl := make([]string, len(slice))
		copy(sl, slice)
		sort.Strings(sl)
		fmt.Fprintln(w, title)
		for _, s := range sl {
			fmt.Fprintf(w, "** %s%s%s\n", preString, s, postString)
		}
	}

}

func dumpStringRefs(w io.Writer, title, preString, postString string, srefs stringRefs) {
	if len(srefs) == 0 {
		return
	}
	fmt.Fprintln(w, "====", title)
	for _, s := range maps.Keys(srefs) {
		fmt.Fprintf(w, "; %s%s%s\n", preString, s, postString)
		fmt.Fprintln(w, ":", srefs[s])
	}
}

Added box/manager/memstore/refs.go.













































































































































































































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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//-----------------------------------------------------------------------------

package memstore

import (
	"slices"

	"zettelstore.de/z/zettel/id"
)

func refsDiff(refsN, refsO id.Slice) (newRefs, remRefs id.Slice) {
	npos, opos := 0, 0
	for npos < len(refsN) && opos < len(refsO) {
		rn, ro := refsN[npos], refsO[opos]
		if rn == ro {
			npos++
			opos++
			continue
		}
		if rn < ro {
			newRefs = append(newRefs, rn)
			npos++
			continue
		}
		remRefs = append(remRefs, ro)
		opos++
	}
	if npos < len(refsN) {
		newRefs = append(newRefs, refsN[npos:]...)
	}
	if opos < len(refsO) {
		remRefs = append(remRefs, refsO[opos:]...)
	}
	return newRefs, remRefs
}

func addRef(refs id.Slice, ref id.Zid) id.Slice {
	hi := len(refs)
	for lo := 0; lo < hi; {
		m := lo + (hi-lo)/2
		if r := refs[m]; r == ref {
			return refs
		} else if r < ref {
			lo = m + 1
		} else {
			hi = m
		}
	}
	refs = slices.Insert(refs, hi, ref)
	return refs
}

func remRefs(refs, rem id.Slice) id.Slice {
	if len(refs) == 0 || len(rem) == 0 {
		return refs
	}
	result := make(id.Slice, 0, len(refs))
	rpos, dpos := 0, 0
	for rpos < len(refs) && dpos < len(rem) {
		rr, dr := refs[rpos], rem[dpos]
		if rr < dr {
			result = append(result, rr)
			rpos++
			continue
		}
		if dr < rr {
			dpos++
			continue
		}
		rpos++
		dpos++
	}
	if rpos < len(refs) {
		result = append(result, refs[rpos:]...)
	}
	return result
}

func remRef(refs id.Slice, ref id.Zid) id.Slice {
	hi := len(refs)
	for lo := 0; lo < hi; {
		m := lo + (hi-lo)/2
		if r := refs[m]; r == ref {
			copy(refs[m:], refs[m+1:])
			refs = refs[:len(refs)-1]
			return refs
		} else if r < ref {
			lo = m + 1
		} else {
			hi = m
		}
	}
	return refs
}

Added box/manager/memstore/refs_test.go.



















































































































































































































































































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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//-----------------------------------------------------------------------------

package memstore

import (
	"testing"

	"zettelstore.de/z/zettel/id"
)

func assertRefs(t *testing.T, i int, got, exp id.Slice) {
	t.Helper()
	if got == nil && exp != nil {
		t.Errorf("%d: got nil, but expected %v", i, exp)
		return
	}
	if got != nil && exp == nil {
		t.Errorf("%d: expected nil, but got %v", i, got)
		return
	}
	if len(got) != len(exp) {
		t.Errorf("%d: expected len(%v)==%d, but got len(%v)==%d", i, exp, len(exp), got, len(got))
		return
	}
	for p, n := range exp {
		if got := got[p]; got != id.Zid(n) {
			t.Errorf("%d: pos %d: expected %d, but got %d", i, p, n, got)
		}
	}
}

func TestRefsDiff(t *testing.T) {
	t.Parallel()
	testcases := []struct {
		in1, in2   id.Slice
		exp1, exp2 id.Slice
	}{
		{nil, nil, nil, nil},
		{id.Slice{1}, nil, id.Slice{1}, nil},
		{nil, id.Slice{1}, nil, id.Slice{1}},
		{id.Slice{1}, id.Slice{1}, nil, nil},
		{id.Slice{1, 2}, id.Slice{1}, id.Slice{2}, nil},
		{id.Slice{1, 2}, id.Slice{1, 3}, id.Slice{2}, id.Slice{3}},
		{id.Slice{1, 4}, id.Slice{1, 3}, id.Slice{4}, id.Slice{3}},
	}
	for i, tc := range testcases {
		got1, got2 := refsDiff(tc.in1, tc.in2)
		assertRefs(t, i, got1, tc.exp1)
		assertRefs(t, i, got2, tc.exp2)
	}
}

func TestAddRef(t *testing.T) {
	t.Parallel()
	testcases := []struct {
		ref id.Slice
		zid uint
		exp id.Slice
	}{
		{nil, 5, id.Slice{5}},
		{id.Slice{1}, 5, id.Slice{1, 5}},
		{id.Slice{10}, 5, id.Slice{5, 10}},
		{id.Slice{5}, 5, id.Slice{5}},
		{id.Slice{1, 10}, 5, id.Slice{1, 5, 10}},
		{id.Slice{1, 5, 10}, 5, id.Slice{1, 5, 10}},
	}
	for i, tc := range testcases {
		got := addRef(tc.ref, id.Zid(tc.zid))
		assertRefs(t, i, got, tc.exp)
	}
}

func TestRemRefs(t *testing.T) {
	t.Parallel()
	testcases := []struct {
		in1, in2 id.Slice
		exp      id.Slice
	}{
		{nil, nil, nil},
		{nil, id.Slice{}, nil},
		{id.Slice{}, nil, id.Slice{}},
		{id.Slice{}, id.Slice{}, id.Slice{}},
		{id.Slice{1}, id.Slice{5}, id.Slice{1}},
		{id.Slice{10}, id.Slice{5}, id.Slice{10}},
		{id.Slice{1, 5}, id.Slice{5}, id.Slice{1}},
		{id.Slice{5, 10}, id.Slice{5}, id.Slice{10}},
		{id.Slice{1, 10}, id.Slice{5}, id.Slice{1, 10}},
		{id.Slice{1}, id.Slice{2, 5}, id.Slice{1}},
		{id.Slice{10}, id.Slice{2, 5}, id.Slice{10}},
		{id.Slice{1, 5}, id.Slice{2, 5}, id.Slice{1}},
		{id.Slice{5, 10}, id.Slice{2, 5}, id.Slice{10}},
		{id.Slice{1, 2, 5}, id.Slice{2, 5}, id.Slice{1}},
		{id.Slice{2, 5, 10}, id.Slice{2, 5}, id.Slice{10}},
		{id.Slice{1, 10}, id.Slice{2, 5}, id.Slice{1, 10}},
		{id.Slice{1}, id.Slice{5, 9}, id.Slice{1}},
		{id.Slice{10}, id.Slice{5, 9}, id.Slice{10}},
		{id.Slice{1, 5}, id.Slice{5, 9}, id.Slice{1}},
		{id.Slice{5, 10}, id.Slice{5, 9}, id.Slice{10}},
		{id.Slice{1, 5, 9}, id.Slice{5, 9}, id.Slice{1}},
		{id.Slice{5, 9, 10}, id.Slice{5, 9}, id.Slice{10}},
		{id.Slice{1, 10}, id.Slice{5, 9}, id.Slice{1, 10}},
	}
	for i, tc := range testcases {
		got := remRefs(tc.in1, tc.in2)
		assertRefs(t, i, got, tc.exp)
	}
}

func TestRemRef(t *testing.T) {
	t.Parallel()
	testcases := []struct {
		ref id.Slice
		zid uint
		exp id.Slice
	}{
		{nil, 5, nil},
		{id.Slice{}, 5, id.Slice{}},
		{id.Slice{5}, 5, id.Slice{}},
		{id.Slice{1}, 5, id.Slice{1}},
		{id.Slice{10}, 5, id.Slice{10}},
		{id.Slice{1, 5}, 5, id.Slice{1}},
		{id.Slice{5, 10}, 5, id.Slice{10}},
		{id.Slice{1, 5, 10}, 5, id.Slice{1, 10}},
	}
	for i, tc := range testcases {
		got := remRef(tc.ref, id.Zid(tc.zid))
		assertRefs(t, i, got, tc.exp)
	}
}

Changes to box/manager/store/store.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

// Package store contains general index data for storing a zettel index.
package store

import (
	"context"








<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package store contains general index data for storing a zettel index.
package store

import (
	"context"

Changes to box/manager/store/wordset.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package store

// WordSet contains the set of all words, with the count of their occurrences.
type WordSet map[string]int









<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package store

// WordSet contains the set of all words, with the count of their occurrences.
type WordSet map[string]int

Changes to box/manager/store/wordset_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package store_test

import (
	"sort"
	"testing"








<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package store_test

import (
	"sort"
	"testing"

Changes to box/manager/store/zettel.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package store

import (
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"








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<







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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package store

import (
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"

Changes to box/membox/membox.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package membox stores zettel volatile in main memory.
package membox

import (
	"context"








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<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package membox stores zettel volatile in main memory.
package membox

import (
	"context"

Changes to box/notify/directory.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package notify

import (
	"errors"
	"fmt"








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<







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package notify

import (
	"errors"
	"fmt"
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		return nil, false
	}

	switch ev.Op {
	case Error:
		newEntries = nil
		if state != DsMissing {
			ds.log.Error().Err(ev.Err).Msg("Notifier confused")
		}
	case Make:
		newEntries = make(entrySet)
	case List:
		if ev.Name == "" {
			zids := getNewZids(newEntries)
			ds.mx.Lock()







|







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		return nil, false
	}

	switch ev.Op {
	case Error:
		newEntries = nil
		if state != DsMissing {
			ds.log.Warn().Err(ev.Err).Msg("Notifier confused")
		}
	case Make:
		newEntries = make(entrySet)
	case List:
		if ev.Name == "" {
			zids := getNewZids(newEntries)
			ds.mx.Lock()
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		ds.mx.Lock()
		zid := ds.onDeleteFileEvent(ds.entries, ev.Name)
		ds.mx.Unlock()
		if zid != id.Invalid {
			ds.notifyChange(zid)
		}
	default:
		ds.log.Error().Str("event", fmt.Sprintf("%v", ev)).Msg("Unknown zettel notification event")
	}
	return newEntries, true
}

func getNewZids(entries entrySet) id.Slice {
	zids := make(id.Slice, 0, len(entries))
	for zid := range entries {







|







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		ds.mx.Lock()
		zid := ds.onDeleteFileEvent(ds.entries, ev.Name)
		ds.mx.Unlock()
		if zid != id.Invalid {
			ds.notifyChange(zid)
		}
	default:
		ds.log.Warn().Str("event", fmt.Sprintf("%v", ev)).Msg("Unknown zettel notification event")
	}
	return newEntries, true
}

func getNewZids(entries entrySet) id.Slice {
	zids := make(id.Slice, 0, len(entries))
	for zid := range entries {
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	zid := seekZid(name)
	if zid == id.Invalid {
		return id.Invalid
	}
	entry := fetchdirEntry(entries, zid)
	dupName1, dupName2 := ds.updateEntry(entry, name)
	if dupName1 != "" {
		ds.log.Info().Str("name", dupName1).Msg("Duplicate content (is ignored)")
		if dupName2 != "" {
			ds.log.Info().Str("name", dupName2).Msg("Duplicate content (is ignored)")
		}
		return id.Invalid
	}
	return zid
}

func (ds *DirService) onDeleteFileEvent(entries entrySet, name string) id.Zid {







|

|







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	zid := seekZid(name)
	if zid == id.Invalid {
		return id.Invalid
	}
	entry := fetchdirEntry(entries, zid)
	dupName1, dupName2 := ds.updateEntry(entry, name)
	if dupName1 != "" {
		ds.log.Warn().Str("name", dupName1).Msg("Duplicate content (is ignored)")
		if dupName2 != "" {
			ds.log.Warn().Str("name", dupName2).Msg("Duplicate content (is ignored)")
		}
		return id.Invalid
	}
	return zid
}

func (ds *DirService) onDeleteFileEvent(entries entrySet, name string) id.Zid {

Changes to box/notify/directory_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

package notify

import (
	"testing"









<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package notify

import (
	"testing"

Changes to box/notify/entry.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package notify

import (
	"path/filepath"









<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package notify

import (
	"path/filepath"

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	if contentName := e.ContentName; contentName != "" {
		if !extIsMetaAndContent(e.ContentExt) && e.MetaName == "" {
			e.MetaName = e.calcBaseName(contentName)
		}
		return
	}

	syntax := m.GetDefault(api.KeySyntax, meta.DefaultSyntax)
	ext := calcContentExt(syntax, m.YamlSep, getZettelFileSyntax)
	metaName := e.MetaName
	eimc := extIsMetaAndContent(ext)
	if eimc {
		if metaName != "" {
			ext = contentExtWithMeta(syntax, content)
		}







|







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	if contentName := e.ContentName; contentName != "" {
		if !extIsMetaAndContent(e.ContentExt) && e.MetaName == "" {
			e.MetaName = e.calcBaseName(contentName)
		}
		return
	}

	syntax := m.GetDefault(api.KeySyntax, "")
	ext := calcContentExt(syntax, m.YamlSep, getZettelFileSyntax)
	metaName := e.MetaName
	eimc := extIsMetaAndContent(ext)
	if eimc {
		if metaName != "" {
			ext = contentExtWithMeta(syntax, content)
		}

Changes to box/notify/fsdir.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package notify

import (
	"os"
	"path/filepath"








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package notify

import (
	"os"
	"path/filepath"
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			log.Error().
				Str("parentDir", absParentDir).Err(errParent).
				Str("path", absPath).Err(err).
				Msg("Unable to access Zettel directory and its parent directory")
			watcher.Close()
			return nil, err
		}

		log.Info().Str("parentDir", absParentDir).Err(errParent).
			Msg("Parent of Zettel directory cannot be supervised")
		log.Info().Str("path", absPath).
			Msg("Zettelstore might not detect a deletion or movement of the Zettel directory")
	} else if err != nil {
		// Not a problem, if container is not available. It might become available later.
		log.Info().Err(err).Str("path", absPath).Msg("Zettel directory currently not available")
	}

	fsdn := &fsdirNotifier{
		log:     log,
		events:  make(chan Event),
		refresh: make(chan struct{}),
		done:    make(chan struct{}),







>
|

|



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			log.Error().
				Str("parentDir", absParentDir).Err(errParent).
				Str("path", absPath).Err(err).
				Msg("Unable to access Zettel directory and its parent directory")
			watcher.Close()
			return nil, err
		}
		log.Warn().
			Str("parentDir", absParentDir).Err(errParent).
			Msg("Parent of Zettel directory cannot be supervised")
		log.Warn().Str("path", absPath).
			Msg("Zettelstore might not detect a deletion or movement of the Zettel directory")
	} else if err != nil {
		// Not a problem, if container is not available. It might become available later.
		log.Warn().Err(err).Str("path", absPath).Msg("Zettel directory not available")
	}

	fsdn := &fsdirNotifier{
		log:     log,
		events:  make(chan Event),
		refresh: make(chan struct{}),
		done:    make(chan struct{}),

Changes to box/notify/helper.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package notify

import (
	"archive/zip"
	"os"

	"zettelstore.de/z/logger"
)






// EntryFetcher return a list of (file) names of an directory.
type EntryFetcher interface {
	Fetch() ([]string, error)
}

type dirPathFetcher struct {








<
<
<










>
>
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>
>







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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package notify

import (
	"archive/zip"
	"os"

	"zettelstore.de/z/logger"
)

// MakeMetaFilename builds the name of the file containing metadata.
func MakeMetaFilename(basename string) string {
	return basename //+ ".meta"
}

// EntryFetcher return a list of (file) names of an directory.
type EntryFetcher interface {
	Fetch() ([]string, error)
}

type dirPathFetcher struct {

Changes to box/notify/notify.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

// Package notify provides some notification services to be used by box services.
package notify

import "fmt"









<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package notify provides some notification services to be used by box services.
package notify

import "fmt"

Changes to box/notify/simpledir.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package notify

import (
	"path/filepath"









<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package notify

import (
	"path/filepath"

Changes to cmd/cmd_file.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package cmd

import (
	"context"
	"flag"
	"fmt"
	"io"
	"os"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/input"
	"zettelstore.de/z/encoder"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/zettel"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

// ---------- Subcommand: file -----------------------------------------------

func cmdFile(fs *flag.FlagSet) (int, error) {
	enc := fs.Lookup("t").Value.String()
	m, inp, err := getInput(fs.Args())
	if m == nil {
		return 2, err
	}
	z := parser.ParseZettel(
		context.Background(),
		zettel.Zettel{
			Meta:    m,
			Content: zettel.NewContent(inp.Src[inp.Pos:]),
		},
		m.GetDefault(api.KeySyntax, meta.DefaultSyntax),
		nil,
	)
	encdr := encoder.Create(api.Encoder(enc), &encoder.CreateParameter{Lang: m.GetDefault(api.KeyLang, api.ValueLangEN)})
	if encdr == nil {
		fmt.Fprintf(os.Stderr, "Unknown format %q\n", enc)
		return 2, nil
	}








<
<
<












|
|




















|







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package cmd

import (
	"context"
	"flag"
	"fmt"
	"io"
	"os"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/z/encoder"
	"zettelstore.de/z/input"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/zettel"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

// ---------- Subcommand: file -----------------------------------------------

func cmdFile(fs *flag.FlagSet) (int, error) {
	enc := fs.Lookup("t").Value.String()
	m, inp, err := getInput(fs.Args())
	if m == nil {
		return 2, err
	}
	z := parser.ParseZettel(
		context.Background(),
		zettel.Zettel{
			Meta:    m,
			Content: zettel.NewContent(inp.Src[inp.Pos:]),
		},
		m.GetDefault(api.KeySyntax, meta.SyntaxZmk),
		nil,
	)
	encdr := encoder.Create(api.Encoder(enc), &encoder.CreateParameter{Lang: m.GetDefault(api.KeyLang, api.ValueLangEN)})
	if encdr == nil {
		fmt.Fprintf(os.Stderr, "Unknown format %q\n", enc)
		return 2, nil
	}

Changes to cmd/cmd_password.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package cmd

import (
	"flag"
	"fmt"








<
<
<







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8



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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package cmd

import (
	"flag"
	"fmt"

Changes to cmd/cmd_run.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package cmd

import (
	"context"
	"flag"








<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package cmd

import (
	"context"
	"flag"

Changes to cmd/command.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package cmd

import (
	"flag"









<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package cmd

import (
	"flag"

Changes to cmd/main.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package cmd

import (
	"crypto/sha256"
	"flag"
	"fmt"
	"net"
	"net/url"
	"os"
	"runtime/debug"
	"strconv"
	"strings"
	"time"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/input"
	"zettelstore.de/z/auth"
	"zettelstore.de/z/auth/impl"
	"zettelstore.de/z/box"
	"zettelstore.de/z/box/compbox"
	"zettelstore.de/z/box/manager"
	"zettelstore.de/z/config"

	"zettelstore.de/z/kernel"
	"zettelstore.de/z/logger"
	"zettelstore.de/z/web/server"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)









<
<
<

















<






>







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package cmd

import (
	"crypto/sha256"
	"flag"
	"fmt"
	"net"
	"net/url"
	"os"
	"runtime/debug"
	"strconv"
	"strings"
	"time"

	"zettelstore.de/client.fossil/api"

	"zettelstore.de/z/auth"
	"zettelstore.de/z/auth/impl"
	"zettelstore.de/z/box"
	"zettelstore.de/z/box/compbox"
	"zettelstore.de/z/box/manager"
	"zettelstore.de/z/config"
	"zettelstore.de/z/input"
	"zettelstore.de/z/kernel"
	"zettelstore.de/z/logger"
	"zettelstore.de/z/web/server"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

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	return err == nil
}

func setConfigValue(err error, subsys kernel.Service, key string, val any) error {
	if err == nil {
		err = kernel.Main.SetConfig(subsys, key, fmt.Sprint(val))
		if err != nil {
			kernel.Main.GetKernelLogger().Error().Str("key", key).Str("value", fmt.Sprint(val)).Err(err).Msg("Unable to set configuration")
		}
	}
	return err
}

func executeCommand(name string, args ...string) int {
	command, ok := Get(name)







|







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	return err == nil
}

func setConfigValue(err error, subsys kernel.Service, key string, val any) error {
	if err == nil {
		err = kernel.Main.SetConfig(subsys, key, fmt.Sprint(val))
		if err != nil {
			kernel.Main.GetKernelLogger().Fatal().Str("key", key).Str("value", fmt.Sprint(val)).Err(err).Msg("Unable to set configuration")
		}
	}
	return err
}

func executeCommand(name string, args ...string) int {
	command, ok := Get(name)

Changes to cmd/register.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package cmd provides command generic functions.
package cmd

// Mention all needed encoders, parsers and stores to have them registered.
import (








<
<
<







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8



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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package cmd provides command generic functions.
package cmd

// Mention all needed encoders, parsers and stores to have them registered.
import (

Changes to cmd/zettelstore/main.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package main is the starting point for the zettelstore command.
package main

import (
	"os"








<
<
<







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8



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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package main is the starting point for the zettelstore command.
package main

import (
	"os"

Changes to collect/collect.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package collect provides functions to collect items from a syntax tree.
package collect

import "zettelstore.de/z/ast"









<
<
<







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8



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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package collect provides functions to collect items from a syntax tree.
package collect

import "zettelstore.de/z/ast"

Changes to collect/collect_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package collect_test provides some unit test for collectors.
package collect_test

import (
	"testing"








<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package collect_test provides some unit test for collectors.
package collect_test

import (
	"testing"

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

// Package collect provides functions to collect items from a syntax tree.
package collect

import "zettelstore.de/z/ast"









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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package collect provides functions to collect items from a syntax tree.
package collect

import "zettelstore.de/z/ast"

Added collect/split.go.





































































































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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//-----------------------------------------------------------------------------

// Package collect provides functions to collect items from a syntax tree.
package collect

import (
	"zettelstore.de/z/ast"
	"zettelstore.de/z/strfun"
)

// DivideReferences divides the given list of rederences into zettel, local, and external References.
func DivideReferences(all []*ast.Reference) (zettel, local, external []*ast.Reference) {
	if len(all) == 0 {
		return nil, nil, nil
	}

	mapZettel := make(strfun.Set)
	mapLocal := make(strfun.Set)
	mapExternal := make(strfun.Set)
	for _, ref := range all {
		if ref.State == ast.RefStateSelf {
			continue
		}
		if ref.IsZettel() {
			zettel = appendRefToList(zettel, mapZettel, ref)
		} else if ref.IsExternal() {
			external = appendRefToList(external, mapExternal, ref)
		} else {
			local = appendRefToList(local, mapLocal, ref)
		}
	}
	return zettel, local, external
}

func appendRefToList(reflist []*ast.Reference, refSet strfun.Set, ref *ast.Reference) []*ast.Reference {
	s := ref.String()
	if !refSet.Has(s) {
		reflist = append(reflist, ref)
		refSet.Set(s)
	}
	return reflist
}

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package config provides functions to retrieve runtime configuration data.
package config

import (
	"context"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package config provides functions to retrieve runtime configuration data.
package config

import (
	"context"

Changes to docs/development/00010000000000.zettel.

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id: 00010000000000
title: Developments Notes
role: zettel
syntax: zmk
created: 00010101000000
modified: 20231218182020

* [[Required Software|20210916193200]]
* [[Fuzzing tests|20221026184300]]
* [[Checklist for Release|20210916194900]]
* [[Development tools|20231218181900]]





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id: 00010000000000
title: Developments Notes
role: zettel
syntax: zmk
created: 00010101000000
modified: 20221026184905

* [[Required Software|20210916193200]]
* [[Fuzzing tests|20221026184300]]
* [[Checklist for Release|20210916194900]]

Changes to docs/development/20210916193200.zettel.

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id: 20210916193200
title: Required Software
role: zettel
syntax: zmk
created: 20210916193200
modified: 20231213194509

The following software must be installed:

* A current, supported [[release of Go|https://go.dev/doc/devel/release]],
* [[Fossil|https://fossil-scm.org/]],
* [[Git|https://git-scm.org/]] (most dependencies are accessible via Git only).

Make sure that the software is in your path, e.g. via:
```sh
export PATH=$PATH:/usr/local/go/bin
export PATH=$PATH:$(go env GOPATH)/bin
```

The internal build tool need the following software.
It can be installed / updated via the build tool itself: ``go run tools/devtools/devtools.go``.

Otherwise you can install the software by hand:

* [[shadow|https://pkg.go.dev/golang.org/x/tools/go/analysis/passes/shadow]] via ``go install golang.org/x/tools/go/analysis/passes/shadow/cmd/shadow@latest``,
* [[staticcheck|https://staticcheck.io/]] via ``go install honnef.co/go/tools/cmd/staticcheck@latest``,
* [[unparam|https://mvdan.cc/unparam]][^[[GitHub|https://github.com/mvdan/unparam]]] via ``go install mvdan.cc/unparam@latest``,
* [[govulncheck|https://golang.org/x/vuln/cmd/govulncheck]] via ``go install golang.org/x/vuln/cmd/govulncheck@latest``,





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id: 20210916193200
title: Required Software
role: zettel
syntax: zmk
created: 20210916193200
modified: 20230405150541

The following software must be installed:

* A current, supported [[release of Go|https://go.dev/doc/devel/release]],
* [[Fossil|https://fossil-scm.org/]],
* [[Git|https://git-scm.org/]] (most dependencies are accessible via Git only).

Make sure that the software is in your path, e.g. via:
```sh
export PATH=$PATH:/usr/local/go/bin
export PATH=$PATH:$(go env GOPATH)/bin
```

The internal build tool need the following software.
It can be installed / updated via the build tool itself: ``go run tools/build.go tools``.

Otherwise you can install the software by hand:

* [[shadow|https://pkg.go.dev/golang.org/x/tools/go/analysis/passes/shadow]] via ``go install golang.org/x/tools/go/analysis/passes/shadow/cmd/shadow@latest``,
* [[staticcheck|https://staticcheck.io/]] via ``go install honnef.co/go/tools/cmd/staticcheck@latest``,
* [[unparam|https://mvdan.cc/unparam]][^[[GitHub|https://github.com/mvdan/unparam]]] via ``go install mvdan.cc/unparam@latest``,
* [[govulncheck|https://golang.org/x/vuln/cmd/govulncheck]] via ``go install golang.org/x/vuln/cmd/govulncheck@latest``,

Changes to docs/development/20210916194900.zettel.

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id: 20210916194900
title: Checklist for Release
role: zettel
syntax: zmk
created: 20210916194900
modified: 20231213194631

# Sync with the official repository
#* ``fossil sync -u``
# Make sure that there is no workspace defined.
#* ``ls ..`` must not have a file ''go.work'', in no parent folder.
# Make sure that all dependencies are up-to-date.
#* ``cat go.mod``
# Clean up your Go workspace:
#* ``go run tools/clean/clean.go`` (alternatively: ``make clean``).
# All internal tests must succeed:
#* ``go run tools/check/check.go -r`` (alternatively: ``make relcheck``).
# The API tests must succeed on every development platform:
#* ``go run tools/testapi/testapi.go`` (alternatively: ``make api``).
# Run [[linkchecker|https://linkchecker.github.io/linkchecker/]] with the manual:
#* ``go run -race cmd/zettelstore/main.go run -d docs/manual``
#* ``linkchecker http://127.0.0.1:23123 2>&1 | tee lc.txt``
#* Check all ""Error: 404 Not Found""
#* Check all ""Error: 403 Forbidden"": allowed for endpoint ''/p'' with encoding ''html'' for those zettel that are accessible only in ''expert-mode''.
#* Try to resolve other error messages and warnings
#* Warnings about empty content can be ignored





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id: 20210916194900
title: Checklist for Release
role: zettel
syntax: zmk
created: 20210916194900
modified: 20230402181229

# Sync with the official repository
#* ``fossil sync -u``
# Make sure that there is no workspace defined.
#* ``ls ..`` must not have a file ''go.work'', in no parent folder.
# Make sure that all dependencies are up-to-date.
#* ``cat go.mod``
# Clean up your Go workspace:
#* ``go run tools/build.go clean`` (alternatively: ``make clean``).
# All internal tests must succeed:
#* ``go run tools/build.go relcheck`` (alternatively: ``make relcheck``).
# The API tests must succeed on every development platform:
#* ``go run tools/build.go testapi`` (alternatively: ``make api``).
# Run [[linkchecker|https://linkchecker.github.io/linkchecker/]] with the manual:
#* ``go run -race cmd/zettelstore/main.go run -d docs/manual``
#* ``linkchecker http://127.0.0.1:23123 2>&1 | tee lc.txt``
#* Check all ""Error: 404 Not Found""
#* Check all ""Error: 403 Forbidden"": allowed for endpoint ''/p'' with encoding ''html'' for those zettel that are accessible only in ''expert-mode''.
#* Try to resolve other error messages and warnings
#* Warnings about empty content can be ignored
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# Disable Fossil autosync mode:
#* ``fossil setting autosync off``
# Commit the new release version:
#* ``fossil commit --tag release --tag vVERSION -m "Version VERSION"``
#* **Important:** the tag must follow the given pattern, e.g. ''v0.0.15''.
   Otherwise client will not be able to import ''zettelkasten.de/z''.
# Clean up your Go workspace:
#* ``go run tools/clean/clean.go`` (alternatively: ``make clean``).
# Create the release:
#* ``go run tools/build/build.go release`` (alternatively: ``make release``).
# Remove previous executables:
#* ``fossil uv remove --glob '*-PREVVERSION*'``
# Add executables for release:
#* ``cd releases``
#* ``fossil uv add *.zip``
#* ``cd ..``
#* Synchronize with main repository:
#* ``fossil sync -u``
# Enable autosync:
#* ``fossil setting autosync on``







|

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# Disable Fossil autosync mode:
#* ``fossil setting autosync off``
# Commit the new release version:
#* ``fossil commit --tag release --tag vVERSION -m "Version VERSION"``
#* **Important:** the tag must follow the given pattern, e.g. ''v0.0.15''.
   Otherwise client will not be able to import ''zettelkasten.de/z''.
# Clean up your Go workspace:
#* ``go run tools/build.go clean`` (alternatively: ``make clean``).
# Create the release:
#* ``go run tools/build.go release`` (alternatively: ``make release``).
# Remove previous executables:
#* ``fossil uv remove --glob '*-PREVVERSION*'``
# Add executables for release:
#* ``cd releases``
#* ``fossil uv add *.zip``
#* ``cd ..``
#* Synchronize with main repository:
#* ``fossil sync -u``
# Enable autosync:
#* ``fossil setting autosync on``

Deleted docs/development/20231218181900.zettel.

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id: 20231218181900
title: Development tools
role: zettel
syntax: zmk
created: 20231218181956
modified: 20231218184500

The source code contains some tools to assist the development of Zettelstore.
These are located in the ''tools'' directory.

Most tool support the generic option ``-v``, which log internal activities.

Some of the tools can be called easier by using ``make``, that reads in a provided ''Makefile''.

=== Check
The ""check"" tool automates some testing activities.
It is called via the command line:
```
# go run tools/check/check.go
```
There is an additional option ``-r`` to check in advance of a release.

The following checks are executed:
* Execution of unit tests, like ``go test ./...``
* Analyze the source code for general problems, as in ``go vet ./...``
* Tries to find shadowed variable, via ``shadow ./...``
* Performs some additional checks on the source code, via ``staticcheck ./...``
* Checks the usage of function parameters and usage of return values, via ``unparam ./...``.
  In case the option ''-r'' is set, the check includes exported functions and internal tests.
* In case option ''-r'' is set, the source code is checked against the vulnerability database, via ``govulncheck ./...``

Please note, that most of the tools above are not automatically installed in a standard Go distribution.
Use the command ""devtools"" to install them.

=== Devtools
The following command installs all needed tools:
```
# go run tooles/devtools/devtools.go
```
It will also automatically update these tools.

=== TestAPI
The following command will perform some high-level tests:
```sh
# go run tools/testapi/testapi.go
```
Basically, a Zettelstore will be started and then API calls will be made to simulate some typical activities with the Zettelstore.

If a Zettelstore is already running on port 23123, this Zettelstore will be used instead.
Even if the API test should clean up later, some zettel might stay created if a test fails.
This feature is used, if you want to have more control on the running Zettelstore.
You should start it with the following command:
```sh
# go run -race cmd/zettelstore/main.go run -c testdata/testbox/19700101000000.zettel
```
This allows you to debug failing API tests.

=== HTMLlint
The following command will check the generated HTML code for validity:
```sh
# go run tools/htmllint/htmllint.go
```
In addition, you might specify the URL od a running Zettelstore.
Otherwise ''http://localhost:23123'' is used.

This command fetches first the list of all zettel.
This list is used to check the generated HTML code (''ZID'' is the paceholder for the zettel identification):

* Check all zettel HTML encodings, via the path ''/z/ZID?enc=html&part=zettel''
* Check all zettel web views, via the path ''/h/ZID''
* The info page of all zettel is checked, via path ''/i/ZID''
* A subset of max. 100 zettel will be checked for the validity of their edit page, via ''/e/ZID''
* 10 random zettel are checked for a valid create form, via ''/c/ZID''
* The zettel rename form will be checked for 100 zettel, via ''/b/ZID''
* A maximum of 200 random zettel are checked for a valid delete dialog, via ''/d/ZID''

Depending on the selected Zettelstore, the command might take a long time.

You can shorten the time, if you disable any zettel query in the footer.

=== Build
The ""build"" tool allows to build the software, either for tests or for a release.

The following command will create a Zettelstore executable for the architecture of the current computer:
```sh
# go tools/build/build.go build
```
You will find the executable in the ''bin'' directory.

A full release will be build in the directory ''releases'', containing ZIP files for the computer architectures ""Linux/amd64"", ""Linux/arm"", ""MacOS/arm64"", ""MacOS/amd64"", and ""Windows/amd64"".
In addition, the manual is also build as a ZIP file:
```sh
# go run tools/build/build.go release
```

If you just want the ZIP file with the manual, please use:
```sh
# go run tools/build/build.go manual
```

In case you want to check the version of the Zettelstore to be build, use:
```sh
# go run tools/build/build.go version
```

=== Clean
To remove the directories ''bin'' and ''releases'', as well as all cached Go libraries used by Zettelstore, execute:
```sh
# go run tools/clean/clean.go
```

Internally, the following commands are executed
```sh
# rm -rf bin releases
# go clean ./...
# go clean -cache -modcache -testcache
```
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Changes to docs/manual/00001004010000.zettel.

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id: 00001004010000
title: Zettelstore startup configuration
role: manual
tags: #configuration #manual #zettelstore
syntax: zmk
created: 20210126175322
modified: 20240220190138

The configuration file, as specified by the ''-c CONFIGFILE'' [[command line option|00001004051000]], allows you to specify some startup options.
These options cannot be stored in a [[configuration zettel|00001004020000]] because either they are needed before Zettelstore can start or because of security reasons.
For example, Zettelstore need to know in advance, on which network address is must listen or where zettel are stored.
An attacker that is able to change the owner can do anything.
Therefore only the owner of the computer on which Zettelstore runs can change this information.







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id: 00001004010000
title: Zettelstore startup configuration
role: manual
tags: #configuration #manual #zettelstore
syntax: zmk
created: 20210126175322
modified: 20221128155143

The configuration file, as specified by the ''-c CONFIGFILE'' [[command line option|00001004051000]], allows you to specify some startup options.
These options cannot be stored in a [[configuration zettel|00001004020000]] because either they are needed before Zettelstore can start or because of security reasons.
For example, Zettelstore need to know in advance, on which network address is must listen or where zettel are stored.
An attacker that is able to change the owner can do anything.
Therefore only the owner of the computer on which Zettelstore runs can change this information.

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  Can be changed at runtime, even for specific internal services, with the ''log-level'' command of the [[administrator console|00001004101000#log-level]].

  Several specifications are separated by the semicolon character (""'';''"", U+003B).
  Each specification consists of an optional service name, together with the colon character (""'':''"", U+003A), followed by the logging level.

  Default: ""info"".

  Examples: ""error"" will produce just error messages (e.g. no ""info"" messages); ""error;web:debug"" will emit debugging messages for the web component of Zettelstore while still producing error messages for all other components.

  When you are familiar to operate the Zettelstore, you might set the level to ""error"" to receive less noisy messages from the Zettelstore.
; [!max-request-size|''max-request-size'']
: Limits the maximum byte size of a web request body to prevent clients from accidentally or maliciously sending a large request and wasting server resources.
  The minimum value is 1024.

  Default: 16777216 (16 MiB). 
; [!owner|''owner'']
: [[Identifier|00001006050000]] of a zettel that contains data about the owner of the Zettelstore.







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  Can be changed at runtime, even for specific internal services, with the ''log-level'' command of the [[administrator console|00001004101000#log-level]].

  Several specifications are separated by the semicolon character (""'';''"", U+003B).
  Each specification consists of an optional service name, together with the colon character (""'':''"", U+003A), followed by the logging level.

  Default: ""info"".

  Examples: ""sense"" will produce sensing messages (e.g. a little more than ""info""); ""sense;web:debug"" will emit debugging messages for the web component of Zettelstore while still producing sensing messages for all other components.

  When you are familiar to operate the Zettelstore, you might set the level to ""warn"" or ""error"" to receive less noisy messages from the Zettelstore.
; [!max-request-size|''max-request-size'']
: Limits the maximum byte size of a web request body to prevent clients from accidentally or maliciously sending a large request and wasting server resources.
  The minimum value is 1024.

  Default: 16777216 (16 MiB). 
; [!owner|''owner'']
: [[Identifier|00001006050000]] of a zettel that contains data about the owner of the Zettelstore.

Changes to docs/manual/00001004059700.zettel.

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id: 00001004059700
title: List of supported logging levels
role: manual
tags: #configuration #manual #zettelstore
syntax: zmk
created: 20211204182643
modified: 20240221134619

Zettelstore supports various levels of logging output.
This allows you to see the inner workings of Zettelstore, or to avoid it.

Each level has an associated name and number.
A lower number signals more logging output.

|= Name | Number :| Description
| Trace | 1 | Show most of the inner workings
| Debug | 2 | Show many internal values that might be interesting for a [[Zettelstore developer|00000000000005]].

| Info  | 3 | Display information about an event. In most cases, there is no required action expected from you.

| Error | 4 | Notify about an error, which was handled automatically. Something is broken. User intervention may be required, some important functionality may be disabled. Monitor the application.


| Mandatory | 5 | Important message will be shown, e.g. the Zettelstore version at startup time.
| Disabled | 6 | No messages will be shown

If you set the logging level to a certain value, only messages with the same or higher numerical value will be shown.
E.g. if you set the logging level to ""error"", no ""trace"", ""debug"", and ""info"" messages are shown, but ""error"" and ""mandatory"" messages.





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id: 00001004059700
title: List of supported logging levels
role: manual
tags: #configuration #manual #zettelstore
syntax: zmk

modified: 20220113183606

Zettelstore supports various levels of logging output.
This allows you to see the inner workings of Zettelstore, or to avoid it.

Each level has an associated name and number.
A lower number signals more logging output.

|= Name | Number >| Description
| Trace | 1 | Show most of the inner workings
| Debug | 2 | Show many internal values that might be interesting for a [[Zettelstore developer|00000000000005]].
| Sense | 3 | Display sensing events, which are not essential information.
| Info  | 4 | Display information about an event. In most cases, there is no required action expected from you.
| Warn  | 5 | Show a warning, i.e. an event that might become an error or more. Mostly invalid data.
| Error | 6 | Notify about an error, which was handled automatically. Something is broken. User intervention is not required, in most cases. Monitor the application.
| Fatal | 7 | Notify about a significant error that cannot be handled automatically. At least some important functionality is disabled.
| Panic | 8 | The application is in an uncertain state and notifies you about its panic. At least some part of the application is possibly restarted.
| Mandatory | 9 | Important message will be shown, e.g. the Zettelstore version at startup time.
| Disabled | 10 | No messages will be shown

If you set the logging level to a certain value, only messages with the same or higher numerical value will be shown.
E.g. if you set the logging level to ""warn"", no ""trace"", ""debug"", ""sense", and ""info"" messages are shown, but ""warn"", ""error"", ""fatal"", ""panic"", and ""mandatory"" messages.

Changes to docs/manual/00001006010000.zettel.

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id: 00001006010000
title: Syntax of Metadata
role: manual
tags: #manual #syntax #zettelstore
syntax: zmk
created: 20210126175322
modified: 20240219193158

The metadata of a zettel is a collection of key-value pairs.
The syntax roughly resembles the internal header of an email ([[RFC5322|https://tools.ietf.org/html/rfc5322]]).

The key is a sequence of alphanumeric characters, a hyphen-minus character (""''-''"", U+002D) is also allowed.
It begins at the first position of a new line.
Uppercase letters of a key are translated to their lowercase equivalence.

A key is separated from its value either by
* a colon character (""'':''""),
* a non-empty sequence of space characters,
* a sequence of space characters, followed by a colon, followed by a sequence of space characters.

A value is a sequence of printable characters.
If the value should be continued in the following line, that following line (""continuation line"") must begin with a non-empty sequence of space characters.
The rest of the following line will be interpreted as the next part of the value.
There can be more than one continuation line for a value.

A non-continuation line that contains a possibly empty sequence of characters, followed by the percent sign character (""''%''"") is treated as a comment line.
It will be ignored.






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id: 00001006010000
title: Syntax of Metadata
role: manual
tags: #manual #syntax #zettelstore
syntax: zmk

modified: 20220218131923

The metadata of a zettel is a collection of key-value pairs.
The syntax roughly resembles the internal header of an email ([[RFC5322|https://tools.ietf.org/html/rfc5322]]).

The key is a sequence of alphanumeric characters, a hyphen-minus character (""''-''"", U+002D) is also allowed.
It begins at the first position of a new line.


A key is separated from its value either by
* a colon character (""'':''""),
* a non-empty sequence of space characters,
* a sequence of space characters, followed by a colon, followed by a sequence of space characters.

A Value is a sequence of printable characters.
If the value should be continued in the following line, that following line (""continuation line"") must begin with a non-empty sequence of space characters.
The rest of the following line will be interpreted as the next part of the value.
There can be more than one continuation line for a value.

A non-continuation line that contains a possibly empty sequence of characters, followed by the percent sign character (""''%''"") is treated as a comment line.
It will be ignored.

Changes to docs/manual/00001006030000.zettel.

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id: 00001006030000
title: Supported Key Types
role: manual
tags: #manual #meta #reference #zettel #zettelstore
syntax: zmk
created: 20210126175322
modified: 20240219161909

All [[supported metadata keys|00001006020000]] conform to a type.

User-defined metadata keys conform also to a type, based on the suffix of the key.

|=Suffix|Type
| ''-date'' | [[Timestamp|00001006034500]]
| ''-number'' | [[Number|00001006033000]]
| ''-role'' | [[Word|00001006035500]]

| ''-time'' | [[Timestamp|00001006034500]]
| ''-title'' | [[Zettelmarkup|00001006036500]]
| ''-url'' | [[URL|00001006035000]]
| ''-zettel''  | [[Identifier|00001006032000]]
| ''-zid''  | [[Identifier|00001006032000]]
| ''-zids''  | [[IdentifierSet|00001006032500]]
| any other suffix | [[EString|00001006031500]]






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id: 00001006030000
title: Supported Key Types
role: manual
tags: #manual #meta #reference #zettel #zettelstore
syntax: zmk
created: 20210126175322
modified: 20230612183742

All [[supported metadata keys|00001006020000]] conform to a type.

User-defined metadata keys conform also to a type, based on the suffix of the key.

|=Suffix|Type
| ''-date'' | [[Timestamp|00001006034500]]
| ''-number'' | [[Number|00001006033000]]
| ''-role'' | [[Word|00001006035500]]
| ''-set'' | [[WordSet|00001006036000]]
| ''-time'' | [[Timestamp|00001006034500]]
| ''-title'' | [[Zettelmarkup|00001006036500]]
| ''-url'' | [[URL|00001006035000]]
| ''-zettel''  | [[Identifier|00001006032000]]
| ''-zid''  | [[Identifier|00001006032000]]
| ''-zids''  | [[IdentifierSet|00001006032500]]
| any other suffix | [[EString|00001006031500]]
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* [[IdentifierSet|00001006032500]]
* [[Number|00001006033000]]
* [[String|00001006033500]]
* [[TagSet|00001006034000]]
* [[Timestamp|00001006034500]]
* [[URL|00001006035000]]
* [[Word|00001006035500]]

* [[Zettelmarkup|00001006036500]]







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* [[IdentifierSet|00001006032500]]
* [[Number|00001006033000]]
* [[String|00001006033500]]
* [[TagSet|00001006034000]]
* [[Timestamp|00001006034500]]
* [[URL|00001006035000]]
* [[Word|00001006035500]]
* [[WordSet|00001006036000]]
* [[Zettelmarkup|00001006036500]]

Added docs/manual/00001006036000.zettel.









































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id: 00001006036000
title: WordSet Key Type
role: manual
tags: #manual #meta #reference #zettel #zettelstore
syntax: zmk
created: 20210212135017
modified: 20230419175745

Values of this type denote a (sorted) set of [[words|00001006035500]].

A set is different to a list, as no duplicate values are allowed.

=== Allowed values
Must be a sequence of at least one word, separated by space characters.

=== Query comparison
All comparisons are done case-insensitive, i.e. ""hell"" will be the prefix of ""World, Hello"".

=== Sorting
Sorting is done by comparing the [[String|00001006033500]] values.

Changes to docs/manual/00001007031140.zettel.

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id: 00001007031140
title: Zettelmarkup: Query Transclusion
role: manual
tags: #manual #search #zettelmarkup #zettelstore
syntax: zmk
created: 20220809132350
modified: 20240219161800

A query transclusion is specified by the following sequence, starting at the first position in a line: ''{{{query:query-expression}}}''.
The line must literally start with the sequence ''{{{query:''.
Everything after this prefix is interpreted as a [[query expression|00001007700000]].

When evaluated, the query expression is evaluated, often resulting in a list of [[links|00001007040310]] to zettel, matching the query expression.
The result replaces the query transclusion element.






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id: 00001007031140
title: Zettelmarkup: Query Transclusion
role: manual
tags: #manual #search #zettelmarkup #zettelstore
syntax: zmk
created: 20220809132350
modified: 20231023163751

A query transclusion is specified by the following sequence, starting at the first position in a line: ''{{{query:query-expression}}}''.
The line must literally start with the sequence ''{{{query:''.
Everything after this prefix is interpreted as a [[query expression|00001007700000]].

When evaluated, the query expression is evaluated, often resulting in a list of [[links|00001007040310]] to zettel, matching the query expression.
The result replaces the query transclusion element.
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: Transform the zettel list into an [[Atom 1.0|https://www.rfc-editor.org/rfc/rfc4287]]-conformant document / feed.
  The document is embedded into the referencing zettel.
; ''RSS'' (aggregate)
: Transform the zettel list into a [[RSS 2.0|https://www.rssboard.org/rss-specification]]-conformant document / feed.
  The document is embedded into the referencing zettel.
; ''KEYS'' (aggregate)
: Emit a list of all metadata keys, together with the number of zettel having the key.
; ''REDIRECT'', ''REINDEX'' (aggregate)
: Will be ignored.
  These actions may have been copied from an existing [[API query call|00001012051400]] (or from a WebUI query), but are here superfluous (and possibly harmful).
; Any [[metadata key|00001006020000]] of type [[Word|00001006035500]] or of type [[TagSet|00001006034000]] (aggregates)
: Emit an aggregate of the given metadata key.
  The key can be given in any letter case[^Except if the key name collides with one of the above names. In this case use at least one lower case letter.].

To allow some kind of backward compatibility, an action written in uppercase letters that leads to an empty result list, will be ignored.
In this case the list of selected zettel is returned.

Example:
```zmk
{{{query:tags:#search | tags}}}
```
This is a tag cloud of all tags that are used together with the tag #search:
:::example
{{{query:tags:#search | tags}}}
:::







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: Transform the zettel list into an [[Atom 1.0|https://www.rfc-editor.org/rfc/rfc4287]]-conformant document / feed.
  The document is embedded into the referencing zettel.
; ''RSS'' (aggregate)
: Transform the zettel list into a [[RSS 2.0|https://www.rssboard.org/rss-specification]]-conformant document / feed.
  The document is embedded into the referencing zettel.
; ''KEYS'' (aggregate)
: Emit a list of all metadata keys, together with the number of zettel having the key.
; ''REINDEX'' (aggregate)
: Will be ignored.
  This action may have been copied from an existing [[API query call|00001012051400]] (or from a WebUI query), but is here superfluous (and possibly harmful).
; Any [[metadata key|00001006020000]] of type [[Word|00001006035500]], [[WordSet|00001006036000]], or [[TagSet|00001006034000]] (aggregates)
: Emit an aggregate of the given metadata key.
  The key can be given in any letter case[^Except if the key name collides with one of the above names. In this case use at least one lower case letter.].




Example:
```zmk
{{{query:tags:#search | tags}}}
```
This is a tag cloud of all tags that are used together with the tag #search:
:::example
{{{query:tags:#search | tags}}}
:::

Changes to docs/manual/00001007040324.zettel.

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id: 00001007040324
title: Zettelmarkup: Inline-mode Transclusion
role: manual
tags: #manual #zettelmarkup #zettelstore
syntax: zmk
created: 20210811154251
modified: 20231222164501

Inline-mode transclusion applies to all zettel that are parsed in a non-trivial way, e.g. as structured textual content.
For example, textual content is assumed if the [[syntax|00001006020000#syntax]] of a zettel is ""zmk"" ([[Zettelmarkup|00001007000000]]), or ""markdown"" / ""md"" ([[Markdown|00001008010000]]).

Since this type of transclusion is at the level of [[inline-structured elements|00001007040000]], the transclude specification must be replaced with some inline-structured elements.

First, the referenced zettel is read.






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id: 00001007040324
title: Zettelmarkup: Inline-mode Transclusion
role: manual
tags: #manual #zettelmarkup #zettelstore
syntax: zmk
created: 20210811154251
modified: 20221116165428

Inline-mode transclusion applies to all zettel that are parsed in a non-trivial way, e.g. as structured textual content.
For example, textual content is assumed if the [[syntax|00001006020000#syntax]] of a zettel is ""zmk"" ([[Zettelmarkup|00001007000000]]), or ""markdown"" / ""md"" ([[Markdown|00001008010000]]).

Since this type of transclusion is at the level of [[inline-structured elements|00001007040000]], the transclude specification must be replaced with some inline-structured elements.

First, the referenced zettel is read.
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   Example: ``{{00001007040322#spin}}`` is rendered as ::{{00001007040322#spin}}::{=example}.

** Just specifying the fragment identifier will reference something in the current page.
   This is not allowed, to prevent a possible endless recursion.

* If the reference is a [[hosted or based|00001007040310#link-specifications]] link / URL to an image, that image will be rendered.

  Example: ``{{//z/00000000040001}}{alt=Emoji}`` is rendered as ::{{//z/00000000040001}}{alt=Emoji}::{=example}

If no inline-structured elements are found, the transclude specification is replaced by an error message.

To avoid an exploding ""transclusion bomb"", a form of a [[billion laughs attack|https://en.wikipedia.org/wiki/Billion_laughs_attack]] (also known as ""XML bomb""), the total number of transclusions / expansions is limited.
The limit can be controlled by setting the value [[''max-transclusions''|00001004020000#max-transclusions]] of the runtime configuration zettel.

=== See also
[[Full transclusion|00001007031100]] does not work inside some text, but is used for [[block-structured elements|00001007030000]].







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   Example: ``{{00001007040322#spin}}`` is rendered as ::{{00001007040322#spin}}::{=example}.

** Just specifying the fragment identifier will reference something in the current page.
   This is not allowed, to prevent a possible endless recursion.

* If the reference is a [[hosted or based|00001007040310#link-specifications]] link / URL to an image, that image will be rendered.

  Example: ``{{//z/00000000040001}}`` is rendered as ::{{//z/00000000040001}}::{=example}

If no inline-structured elements are found, the transclude specification is replaced by an error message.

To avoid an exploding ""transclusion bomb"", a form of a [[billion laughs attack|https://en.wikipedia.org/wiki/Billion_laughs_attack]] (also known as ""XML bomb""), the total number of transclusions / expansions is limited.
The limit can be controlled by setting the value [[''max-transclusions''|00001004020000#max-transclusions]] of the runtime configuration zettel.

=== See also
[[Full transclusion|00001007031100]] does not work inside some text, but is used for [[block-structured elements|00001007030000]].

Changes to docs/manual/00001007720300.zettel.

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id: 00001007720300
title: Query: Context Directive
role: manual
tags: #manual #search #zettelstore
syntax: zmk
created: 20230707204706
modified: 20240209191045

A context directive calculates the __context__ of a list of zettel identifier.
It starts with the keyword ''CONTEXT''.

Optionally you may specify some context details, after the keyword ''CONTEXT'', separated by space characters.
These are:
* ''FULL'': additionally search for zettel with the same tags,
* ''BACKWARD'': search for context only though backward links,
* ''FORWARD'': search for context only through forward links,
* ''COST'': one or more space characters, and a positive integer: set the maximum __cost__ (default: 17),
* ''MAX'': one or more space characters, and a positive integer: set the maximum number of context zettel (default: 200).

If no ''BACKWARD'' and ''FORWARD'' is specified, a search for context zettel will be done though backward and forward links.

The cost of a context zettel is calculated iteratively:
* Each of the specified zettel hast a cost of one.
* A zettel found as a single folge zettel or single precursor zettel has the cost of the originating zettel, plus one.
* A zettel found as a single subordinate zettel or single superior zettel has the cost of the originating zettel, plus 1.2.
* A zettel found as a single successor zettel or single predecessor zettel has the cost of the originating zettel, plus seven.
* A zettel found via another link without being part of a [[set of zettel identifier|00001006032500]], has the cost of the originating zettel, plus two.
* A zettel which is part of a set of zettel identifier, has the cost of the originating zettel, plus one of the four choices above and multiplied with roughly a linear-logarithmic value based on the size of the set.
* A zettel with the same tag, has the cost of the originating zettel, plus a linear-logarithmic number based on the number of zettel with this tag.
  If a zettel belongs to more than one tag compared with the current zettel, there is a discount of 90% per additional tag.
  This only applies if the ''FULL'' directive was specified.

The maximum cost is only checked for all zettel that are not directly reachable from the initial, specified list of zettel.
This ensures that initial zettel that have only a highly used tag, will also produce some context zettel.

Despite its possibly complicated structure, this algorithm ensures in practice that the zettel context is a list of zettel, where the first elements are ""near"" to the specified zettel and the last elements are more ""distant"" to the specified zettel.
It also penalties zettel that acts as a ""hub"" to other zettel, to make it more likely that only relevant zettel appear on the context list.

This directive may be specified only once as a query directive.
A second occurence of ''CONTEXT'' is interpreted as a [[search expression|00001007701000]].
In most cases it is easier to adjust the maximum cost than to perform another context search, which is relatively expensive in terms of retrieving effort.






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id: 00001007720300
title: Query: Context Directive
role: manual
tags: #manual #search #zettelstore
syntax: zmk
created: 20230707204706
modified: 20230724153832

A context directive calculates the __context__ of a list of zettel identifier.
It starts with the keyword ''CONTEXT''.

Optionally you may specify some context details, after the keyword ''CONTEXT'', separated by space characters.
These are:

* ''BACKWARD'': search for context only though backward links,
* ''FORWARD'': search for context only through forward links,
* ''COST'', one or more space characters, and a positive integer: set the maximum __cost__ (default: 17),
* ''MAX'', one or more space characters, and a positive integer: set the maximum number of context zettel (default: 200).

If no ''BACKWARD'' and ''FORWARD'' is specified, a search for context zettel will be done though backward and forward links.

The cost of a context zettel is calculated iteratively:
* Each of the specified zettel hast a cost of one.
* A zettel found as a single folge zettel or single precursor zettel has the cost of the originating zettel, plus one.

* A zettel found as a single successor zettel or single predecessor zettel has the cost of the originating zettel, plus two.
* A zettel found via another link without being part of a [[set of zettel identifier|00001006032500]], has the cost of the originating zettel, plus three.
* A zettel which is part of a set of zettel identifier, has the cost of the originating zettel, plus one of the three choices above and multiplied with roughly a logarithmic value based on the size of the set.
* A zettel with the same tag, has the cost of the originating zettel, plus the number of zettel with the same tag (if it is less than eight), or the cost of the originating zettel plus two, multiplied by number of zettel with the same tag divided by four.



The maximum cost is only checked for all zettel that are not directly reachable from the initial, specified list of zettel.
This ensures that initial zettel that have only a highly used tag, will also produce some context zettel.

Despite its possibly complicated structure, this algorithm ensures in practice that the zettel context is a list of zettel, where the first elements are ""near"" to the specified zettel and the last elements are more ""distant"" to the specified zettel.
It also penalties zettel that acts as a ""hub"" to other zettel, to make it more likely that only relevant zettel appear on the context list.

This directive may be specified only once as a query directive.
A second occurence of ''CONTEXT'' is interpreted as a [[search expression|00001007701000]].
In most cases it is easier to adjust the maximum cost than to perform another context search, which is relatively expensive in terms of retrieving power.

Changes to docs/manual/00001007770000.zettel.

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id: 00001007770000
title: Query: Action List
role: manual
tags: #manual #search #zettelstore
syntax: zmk
created: 20230707205246
modified: 20240219161813

With a [[list of zettel identifier|00001007710000]], a [[query directives|00001007720000]], or a [[search expression|00001007701000]], a list of zettel is selected.
__Actions__ allow to modify this list to a certain degree.

Which actions are allowed depends on the context.
However, actions are further separated into __parameter action__ and __aggregate actions__.
A parameter action just sets a parameter for an aggregate action.
An aggregate action transforms the list of selected zettel into a different, aggregate form.
Only the first aggregate form is executed, following aggregate actions are ignored.

In most contexts, valid actions include the name of metadata keys, at least of type [[Word|00001006035500]] or [[TagSet|00001006034000]].

To allow some kind of backward compatibility, an action written in uppercase letters that leads to an empty result list, will be ignored.
In this case the list of selected zettel is returned.






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id: 00001007770000
title: Query: Action List
role: manual
tags: #manual #search #zettelstore
syntax: zmk
created: 20230707205246
modified: 20230707205532

With a [[list of zettel identifier|00001007710000]], a [[query directives|00001007720000]], or a [[search expression|00001007701000]], a list of zettel is selected.
__Actions__ allow to modify this list to a certain degree.

Which actions are allowed depends on the context.
However, actions are further separated into __parameter action__ and __aggregate actions__.
A parameter action just sets a parameter for an aggregate action.
An aggregate action transforms the list of selected zettel into a different, aggregate form.
Only the first aggregate form is executed, following aggregate actions are ignored.

In most contexts, valid actions include the name of metadata keys, at least of type [[Word|00001006035500]], [[WordSet|00001006036000]], or [[TagSet|00001006034000]].



Changes to docs/manual/00001007780000.zettel.

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id: 00001007780000
title: Formal syntax of query expressions
role: manual
tags: #manual #reference #search #zettelstore
syntax: zmk
created: 20220810144539
modified: 20240219155949

```
QueryExpression   := ZettelList? QueryDirective* SearchExpression ActionExpression?
ZettelList        := (ZID (SPACE+ ZID)*).
ZID               := '0'+ ('1' .. '9'') DIGIT*
                   | ('1' .. '9') DIGIT*.
QueryDirective    := ContextDirective
                   | IdentDirective
                   | ItemsDirective
                   | UnlinkedDirective.
ContextDirective  := "CONTEXT" (SPACE+ ContextDetail)*.
ContextDetail     := "FULL"
                   | "BACKWARD"
                   | "FORWARD"
                   | "COST" SPACE+ PosInt
                   | "MAX" SPACE+ PosInt.
IdentDirective    := IDENT.
ItemsDirective    := ITEMS.
UnlinkedDirective := UNLINKED (SPACE+ PHRASE SPACE+ Word)*.
SearchExpression  := SearchTerm (SPACE+ SearchTerm)*.






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id: 00001007780000
title: Formal syntax of query expressions
role: manual
tags: #manual #reference #search #zettelstore
syntax: zmk
created: 20220810144539
modified: 20230731160413

```
QueryExpression   := ZettelList? QueryDirective* SearchExpression ActionExpression?
ZettelList        := (ZID (SPACE+ ZID)*).
ZID               := '0'+ ('1' .. '9'') DIGIT*
                   | ('1' .. '9') DIGIT*.
QueryDirective    := ContextDirective
                   | IdentDirective
                   | ItemsDirective
                   | UnlinkedDirective.
ContextDirective  := "CONTEXT" (SPACE+ ContextDetail)*.
ContextDetail     := "BACKWARD"

                   | "FORWARD"
                   | "COST" SPACE+ PosInt
                   | "MAX" SPACE+ PosInt.
IdentDirective    := IDENT.
ItemsDirective    := ITEMS.
UnlinkedDirective := UNLINKED (SPACE+ PHRASE SPACE+ Word)*.
SearchExpression  := SearchTerm (SPACE+ SearchTerm)*.
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SearchOperator    := '!'
                   | ('!')? ('~' | ':' | '[' | '}').
ExistOperator     := '?'
                   | '!' '?'.
PosInt            := '0'
                   | ('1' .. '9') DIGIT*.
ActionExpression  := '|' (Word (SPACE+ Word)*)?
Action            := Word
                   | 'ATOM'
                   | 'KEYS'
                   | 'N' NO-SPACE*
                   | 'MAX' PosInt
                   | 'MIN' PosInt
                   | 'REDIRECT'
                   | 'REINDEX'
                   | 'RSS'
                   | 'TITLE' (SPACE Word)* .
Word              := NO-SPACE NO-SPACE*
```







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SearchOperator    := '!'
                   | ('!')? ('~' | ':' | '[' | '}').
ExistOperator     := '?'
                   | '!' '?'.
PosInt            := '0'
                   | ('1' .. '9') DIGIT*.
ActionExpression  := '|' (Word (SPACE+ Word)*)?










Word              := NO-SPACE NO-SPACE*
```

Changes to docs/manual/00001007790000.zettel.

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id: 00001007790000
title: Useful query expressions
role: manual
tags: #example #manual #search #zettelstore
syntax: zmk
created: 20220810144539
modified: 20240216003702

|= Query Expression |= Meaning
| [[query:role:configuration]] | Zettel that contains some configuration data for the Zettelstore
| [[query:ORDER REVERSE created LIMIT 40]] | 40 recently created zettel
| [[query:ORDER REVERSE published LIMIT 40]] | 40 recently updated zettel
| [[query:PICK 40]] | 40 random zettel, ordered by zettel identifier
| [[query:dead?]] | Zettel with invalid / dead links
| [[query:backward!? precursor!?]] | Zettel that are not referenced by other zettel
| [[query:tags!?]] | Zettel without tags
| [[query:expire? ORDER expire]] | Zettel with an expire date, ordered from the nearest to the latest
| [[query:00001007700000 CONTEXT]] | Zettel within the context of the [[given zettel|00001007700000]]
| [[query:PICK 1 | REDIRECT]] | Redirect to a random zettel






|











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id: 00001007790000
title: Useful query expressions
role: manual
tags: #example #manual #search #zettelstore
syntax: zmk
created: 20220810144539
modified: 20230706155134

|= Query Expression |= Meaning
| [[query:role:configuration]] | Zettel that contains some configuration data for the Zettelstore
| [[query:ORDER REVERSE created LIMIT 40]] | 40 recently created zettel
| [[query:ORDER REVERSE published LIMIT 40]] | 40 recently updated zettel
| [[query:PICK 40]] | 40 random zettel, ordered by zettel identifier
| [[query:dead?]] | Zettel with invalid / dead links
| [[query:backward!? precursor!?]] | Zettel that are not referenced by other zettel
| [[query:tags!?]] | Zettel without tags
| [[query:expire? ORDER expire]] | Zettel with an expire date, ordered from the nearest to the latest
| [[query:00001007700000 CONTEXT]] | Zettel within the context of the [[given zettel|00001007700000]]

Changes to docs/manual/00001007903000.zettel.

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id: 00001007903000
title: Zettelmarkup: First Steps
role: manual
tags: #manual #tutorial #zettelmarkup #zettelstore
syntax: zmk
created: 20220810182917
modified: 20231201135849

[[Zettelmarkup|00001007000000]] allows you to leave your text as it is, at least in many situations.
Some characters have a special meaning, but you have to enter them is a defined way to see a visible change.
Zettelmarkup is designed to be used for zettel, which are relatively short.
It allows to produce longer texts, but you should probably use a different tool, if you want to produce an scientific paper, to name an example.

=== Paragraphs






|







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id: 00001007903000
title: Zettelmarkup: First Steps
role: manual
tags: #manual #tutorial #zettelmarkup #zettelstore
syntax: zmk
created: 20220810182917
modified: 20220926183359

[[Zettelmarkup|00001007000000]] allows you to leave your text as it is, at least in many situations.
Some characters have a special meaning, but you have to enter them is a defined way to see a visible change.
Zettelmarkup is designed to be used for zettel, which are relatively short.
It allows to produce longer texts, but you should probably use a different tool, if you want to produce an scientific paper, to name an example.

=== Paragraphs
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| ''An __emphasized__ word'' | An __emphasized__ word | Put two underscore characters before and after the text you want to emphasize
| ''Someone uses **bold** text'' | Someone uses **bold** text | Put two asterisks before and after the text you want to see bold
| ''He says: ""I love you!""'' | Her says: ""I love you!"" | Put two quotation mark characters before and after the text you want to quote.

You probably see a principle.

One nice thing about the quotation mark characters: they are rendered according to the current language.
Examples: ""english""{lang=en}, ""french""{lang=fr}, ""german""{lang=de}.
You will see later, how to change the current language.

=== Lists
Quite often, text consists of lists.
Zettelmarkup supports different types of lists.
The most important lists are:
* Unnumbered lists,







|







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| ''An __emphasized__ word'' | An __emphasized__ word | Put two underscore characters before and after the text you want to emphasize
| ''Someone uses **bold** text'' | Someone uses **bold** text | Put two asterisks before and after the text you want to see bold
| ''He says: ""I love you!""'' | Her says: ""I love you!"" | Put two quotation mark characters before and after the text you want to quote.

You probably see a principle.

One nice thing about the quotation mark characters: they are rendered according to the current language.
Examples: ""english""{lang=en}, ""french""{lang=fr}, ""german""{lang=de}, ""finnish""{lang=fi}.
You will see later, how to change the current language.

=== Lists
Quite often, text consists of lists.
Zettelmarkup supports different types of lists.
The most important lists are:
* Unnumbered lists,

Changes to docs/manual/00001007990000.zettel.

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id: 00001007990000
title: Zettelmarkup: Cheat Sheet
role: manual
tags: #manual #reference #zettelmarkup
syntax: zmk
created: 20221209191905
modified: 20231201140000

=== Overview
This Zettelmarkup cheat sheet provides a quick overview of many Zettelmarkup elements.
It can not cover any special case.
If you need more information about any of these elements, please refer to the detailed description.

=== Basic Syntax
|[[Text formatting|00001007040100]]|''__italic text__'' &rarr; __italic text__, ''**bold text**'' &rarr; **bold text**, ''""quoted text""'' &rarr; ""quoted text"", ''##marked text##'' &rarr; ##marked text##
|[[Text editing|00001007040100]]|''>>inserted text>>'' &rarr; >>inserted text>>, ''~~deleted text~~'' &rarr; ~~deleted text~~
|[[Text literal formatting|00001007040200]]|''\'\'entered text\'\''' &rarr; ''entered text'', ''``source code``'' &rarr; ``source code``, ''==text output=='' &rarr; ==text output==
|[[Superscript, subscript|00001007040100]]|''m^^2^^'' &rarr; m^^2^^, ''H,,2,,O'' &rarr; H,,2,,O
|[[Links to other zettel|00001007040310]]|''[[Link text|00001007990000]]'' &rarr; [[Link text|00001007990000]]
|[[Links to external resources|00001007040310]]|''[[Zettelstore|https://zettelstore.de]]'' &rarr; [[Zettelstore|https://zettelstore.de]]
|[[Embed an image|00001007040322]]|''{{Image text|00000000040001}}'' &rarr; {{Image text|00000000040001}}
|[[Embed content of first paragraph|00001007040324]]|''{{00001007990000}}'' &rarr; {{00001007990000}}






|







|







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id: 00001007990000
title: Zettelmarkup: Cheat Sheet
role: manual
tags: #manual #reference #zettelmarkup
syntax: zmk
created: 20221209191905
modified: 20221209193310

=== Overview
This Zettelmarkup cheat sheet provides a quick overview of many Zettelmarkup elements.
It can not cover any special case.
If you need more information about any of these elements, please refer to the detailed description.

=== Basic Syntax
|[[Text formatting|00001007040100]]|''__italic text__'' &rarr; __italic text__, ''**bold text**'' &rarr; **bold text**, ''""quoted text""'' &rarr; ""quoted text""
|[[Text editing|00001007040100]]|''>>inserted text>>'' &rarr; >>inserted text>>, ''~~deleted text~~'' &rarr; ~~deleted text~~
|[[Text literal formatting|00001007040200]]|''\'\'entered text\'\''' &rarr; ''entered text'', ''``source code``'' &rarr; ``source code``, ''==text output=='' &rarr; ==text output==
|[[Superscript, subscript|00001007040100]]|''m^^2^^'' &rarr; m^^2^^, ''H,,2,,O'' &rarr; H,,2,,O
|[[Links to other zettel|00001007040310]]|''[[Link text|00001007990000]]'' &rarr; [[Link text|00001007990000]]
|[[Links to external resources|00001007040310]]|''[[Zettelstore|https://zettelstore.de]]'' &rarr; [[Zettelstore|https://zettelstore.de]]
|[[Embed an image|00001007040322]]|''{{Image text|00000000040001}}'' &rarr; {{Image text|00000000040001}}
|[[Embed content of first paragraph|00001007040324]]|''{{00001007990000}}'' &rarr; {{00001007990000}}

Changes to docs/manual/00001012051400.zettel.

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id: 00001012051400
title: API: Query the list of all zettel
role: manual
tags: #api #manual #zettelstore
syntax: zmk
created: 20220912111111
modified: 20240219161831
precursor: 00001012051200

The [[endpoint|00001012920000]] ''/z'' also allows you to filter the list of all zettel[^If [[authentication is enabled|00001010040100]], you must include the a valid [[access token|00001012050200]] in the ''Authorization'' header] and optionally to provide some actions.

A [[query|00001007700000]] is an optional [[search expression|00001007700000#search-expression]], together with an optional [[list of actions|00001007700000#action-list]] (described below).
An empty search expression will select all zettel.
An empty list of action, or no valid action, returns the list of all selected zettel metadata.






|







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id: 00001012051400
title: API: Query the list of all zettel
role: manual
tags: #api #manual #zettelstore
syntax: zmk
created: 20220912111111
modified: 20231023162927
precursor: 00001012051200

The [[endpoint|00001012920000]] ''/z'' also allows you to filter the list of all zettel[^If [[authentication is enabled|00001010040100]], you must include the a valid [[access token|00001012050200]] in the ''Authorization'' header] and optionally to provide some actions.

A [[query|00001007700000]] is an optional [[search expression|00001007700000#search-expression]], together with an optional [[list of actions|00001007700000#action-list]] (described below).
An empty search expression will select all zettel.
An empty list of action, or no valid action, returns the list of all selected zettel metadata.
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The following actions are supported:
; ''MINn'' (parameter)
: Emit only those values with at least __n__ aggregated values.
  __n__ must be a positive integer, ''MIN'' must be given in upper-case letters.
; ''MAXn'' (parameter)
: Emit only those values with at most __n__ aggregated values.
  __n__ must be a positive integer, ''MAX'' must be given in upper-case letters.
; ''REDIRECT'' (aggregate)
: Performs a HTTP redirect to the first selected zettel, using HTTP status code 302.
  The zettel identifier is in the body.
; ''REINDEX'' (aggregate)
: Updates the internal search index for the selected zettel, roughly similar to the [[refresh|00001012080500]] API call.
  It is not really an aggregate, since it is used only for its side effect.
  It is allowed to specify another aggregate.
; Any [[metadata key|00001006020000]] of type [[Word|00001006035500]] or [[TagSet|00001006034000]] (aggregates)
: Emit an aggregate of the given metadata key.
  The key can be given in any letter case.

First, ''REINDEX'' actions are executed, then ''REDIRECT''.
If no ''REDIRECT'' was found the first other aggregate action will be executed.

To allow some kind of backward compatibility, an action written in uppercase letters that leads to an empty result list, will be ignored.
In this case the list of selected zettel is returned.

=== HTTP Status codes
; ''200''
: Query was successful.
; ''204''
: Query was successful, but results in no content.
  Most likely, you specified no appropriate aggregator.
; ''302''
: Query was successful, redirect to first zettel in list.
; ''400''
: Request was not valid. 
  There are several reasons for this.
  Maybe the access bearer token was not valid, or you forgot to specify a valid query.







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The following actions are supported:
; ''MINn'' (parameter)
: Emit only those values with at least __n__ aggregated values.
  __n__ must be a positive integer, ''MIN'' must be given in upper-case letters.
; ''MAXn'' (parameter)
: Emit only those values with at most __n__ aggregated values.
  __n__ must be a positive integer, ''MAX'' must be given in upper-case letters.



; ''REINDEX'' (aggregate)
: Updates the internal search index for the selected zettel, roughly similar to the [[refresh|00001012080500]] API call.
  It is not really an aggregate, since it is used only for its side effect.
  It is allowed to specify another aggregate.
; Any [[metadata key|00001006020000]] of type [[Word|00001006035500]], [[WordSet|00001006036000]], or [[TagSet|00001006034000]] (aggregates)
: Emit an aggregate of the given metadata key.
  The key can be given in any letter case.


Only the first aggregate action will be executed.




=== HTTP Status codes
; ''200''
: Query was successful.
; ''204''
: Query was successful, but results in no content.
  Most likely, you specified no appropriate aggregator.


; ''400''
: Request was not valid. 
  There are several reasons for this.
  Maybe the access bearer token was not valid, or you forgot to specify a valid query.

Changes to docs/manual/00001012931000.zettel.

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id: 00001012931000
title: Encoding of Sz
role: manual
tags: #api #manual #reference #zettelstore
syntax: zmk
created: 20230403153903
modified: 20240123120319

Zettel in a [[Sz encoding|00001012920516]] are represented as a [[symbolic expression|00001012930000]].
To process these symbolic expressions, you need to know, how a specific part of a zettel is represented by a symbolic expression.

Basically, each part of a zettel is represented as a list, often a nested list.
The first element of that list is always an unique symbol, which denotes that part.
The meaning / semantic of all other elements depend on that symbol.






|







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id: 00001012931000
title: Encoding of Sz
role: manual
tags: #api #manual #reference #zettelstore
syntax: zmk
created: 20230403153903
modified: 20230405133249

Zettel in a [[Sz encoding|00001012920516]] are represented as a [[symbolic expression|00001012930000]].
To process these symbolic expressions, you need to know, how a specific part of a zettel is represented by a symbolic expression.

Basically, each part of a zettel is represented as a list, often a nested list.
The first element of that list is always an unique symbol, which denotes that part.
The meaning / semantic of all other elements depend on that symbol.
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Metadata is represented by a list, where the first element is the symbol ''META''.
Following elements represent each metadatum[^""Metadatum"" is used as the singular form of metadata.] of a zettel in standard order.

Standard order is: [[Title|00001006020000#title]], [[Role|00001006020000#role]], [[Tags|00001006020000#tags]], [[Syntax|00001006020000#syntax]], all other [[keys|00001006020000]] in alphabetic order.

:::syntax
__Metadata__ **=** ''(META'' [[__Metadatum__|00001012931200]] &hellip; '')''.
:::
=== Content

Zettel content is represented by a block.
:::syntax
__Content__ **=** [[__Block__|#block]].
:::

==== Block
A block is represented by a list with the symbol ''BLOCK'' as the first element.
All following elements represent a nested [[block-structured element|00001007030000]].

:::syntax
[!block|__Block__] **=** ''(BLOCK'' [[__BlockElement__|00001012931400]] &hellip; '')''.
:::

==== Inline
Both block-structured elements and some metadata values may contain [[inline-structured elements|00001007040000]].
Similar, inline-structured elements are represented as follows:

:::syntax
__Inline__ **=** ''(INLINE'' [[__InlineElement__|00001012931600]] &hellip; '')''.
:::

==== Attribute
[[Attributes|00001007050000]] may be specified for both block- and inline- structured elements.
Attributes are represented by the following schema.


:::syntax
__Attribute__ **=** ''('' **[** [[__AttributeKeyValue__|00001012931800]] &hellip; **]** ')'.
:::

Either, there are no attributes.
These are specified by the empty list ''()''.
Or there are attributes.
In this case, the first element of the list must be the symbol ''quote'': ''(quote'' ''('' A,,1,, A,,2,, &hellip; A,,n,, '')'''')''.








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|







|





>


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Metadata is represented by a list, where the first element is the symbol ''META''.
Following elements represent each metadatum[^""Metadatum"" is used as the singular form of metadata.] of a zettel in standard order.

Standard order is: [[Title|00001006020000#title]], [[Role|00001006020000#role]], [[Tags|00001006020000#tags]], [[Syntax|00001006020000#syntax]], all other [[keys|00001006020000]] in alphabetic order.

:::syntax
__Metadata__ **=** ''(META'' [[__Metadatum__|00001012931200]] __Metadatum__ &hellip; __Metadatum__ '')''.
:::
=== Content

Zettel content is represented by a block.
:::syntax
__Content__ **=** [[__Block__|#block]].
:::

==== Block
A block is represented by a list with the symbol ''BLOCK'' as the first element.
All following elements represent a nested [[block-structured element|00001007030000]].

:::syntax
[!block|__Block__] **=** ''(BLOCK'' [[__BlockElement__|00001012931400]] __BlockElement__ &hellip; __BlockElement__ '')''.
:::

==== Inline
Both block-structured elements and some metadata values may contain [[inline-structured elements|00001007040000]].
Similar, inline-structured elements are represented as follows:

:::syntax
__Inline__ **=** ''(INLINE'' [[__InlineElement__|00001012931600]] __InlineElement__ &hellip; __InlineElement__ '')''.
:::

==== Attribute
[[Attributes|00001007050000]] may be specified for both block- and inline- structured elements.
Attributes are represented by the following schema.
Please note, the the symbol ''quote'' is lower-case by intention.

:::syntax
__Attribute__ **=** ''('' **[** ''quote'' ''('' [[__AttributeKeyValue__|00001012931800]] __AttributeKeyValue__ &hellip; __AttributeKeyValue__ '')'' **]** ')'.
:::

Either, there are no attributes.
These are specified by the empty list ''()''.
Or there are attributes.
In this case, the first element of the list must be the symbol ''quote'': ''(quote'' ''('' A,,1,, A,,2,, &hellip; A,,n,, '')'''')''.

Changes to docs/manual/00001012931200.zettel.

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id: 00001012931200
title: Encoding of Sz Metadata
role: manual
tags: #api #manual #reference #zettelstore
syntax: zmk
created: 20230403161618
modified: 20240219161848

A single metadata (""metadatum"") is represented by a triple: a symbol representing the type, a symbol representing the key, and either a string or a list that represent the value.




The symbol depends on the [[metadata key type|00001006030000]].
The value also depends somehow on the key type: a set of values is represented as a list, all other values are represented by a string, even if it is a number.

The following table maps key types to symbols and to the type of the value representation.

|=Key Type<| Symbol<| Value<
| [[Credential|00001006031000]] | ''CREDENTIAL'' | string
| [[EString|00001006031500]] | ''EMPTY-STRING'' | string
| [[Identifier|00001006032000]] | ''ZID'' | string
| [[IdentifierSet|00001006032500]] | ''ZID-SET'' | ListValue
| [[Number|00001006033000]] | ''NUMBER'' | string
| [[String|00001006033500]] | ''STRING'' | string
| [[TagSet|00001006034000]] | ''TAG-SET'' | ListValue
| [[Timestamp|00001006034500]] | ''TIMESTAMP'' | string
| [[URL|00001006035000]] | ''URL'' | string
| [[Word|00001006035500]] | ''WORD'' | string

| [[Zettelmarkup|00001006036500]] | ''ZETTELMARKUP'' | string



:::syntax
__ListValue__ **=** ''('' String,,1,, String,,2,, &hellip; String,,n,, '')''.
:::

Examples:
* The title of this zettel is represented as: ''(EMPTY-STRING title "Encoding of Sz Metadata")''
* The tags of this zettel are represented as: ''(TAG-SET tags ("#api" "#manual" "#reference" "#zettelstore"))''






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id: 00001012931200
title: Encoding of Sz Metadata
role: manual
tags: #api #manual #reference #zettelstore
syntax: zmk
created: 20230403161618
modified: 20230405121932

A single metadata (""metadatum"") is represented by a triple: a symbol representing the type, a symbol representing the key, and either a string or a list that represent the value.

The key symbol must be ""quoted"", i.e. for the key ""title"": ''(quote title)''.
This property may be relaxed in future versions of the Zettelstore.

The symbol depends on the [[metadata key type|00001006030000]].
The value also depends somehow on the key type: a set of values is represented as a list, all other values are represented by a string, even if it is a number.

The following table maps key types to symbols and to the type of the value representation.

|=Key Type<| Symbol<| Value<
| [[Credential|00001006031000]] | ''CREDENTIAL'' | string
| [[EString|00001006031500]] | ''EMPTY-STRING'' | string
| [[Identifier|00001006032000]] | ''ZID'' | string
| [[IdentifierSet|00001006032500]] | ''ZID-SET'' | list
| [[Number|00001006033000]] | ''NUMBER'' | string
| [[String|00001006033500]] | ''STRING'' | string
| [[TagSet|00001006034000]] | ''TAG-SET'' | list
| [[Timestamp|00001006034500]] | ''TIMESTAMP'' | string
| [[URL|00001006035000]] | ''URL'' | string
| [[Word|00001006035500]] | ''WORD'' | string
| [[WordSet|00001006036000]] | ''WORD-SET'' | list
| [[Zettelmarkup|00001006036500]] | ''ZETTELMARKUP'' | string

If the value is represented as a list, its first element is the symbol ''list'', and all other elements are strings with the appropriate values.

:::syntax
__ListValue__ **=** ''(list'' String,,1,, String,,2,, &hellip; String,,n,, '')''.
:::

Examples:
* The title of this zettel is represented as: ''(EMPTY-STRING (quote title) "Encoding of Sz Metadata")''
* The tags of this zettel are represented as: ''(TAG-SET (quote tags) (list "#api" "#manual" "#reference" "#zettelstore"))''

Changes to docs/manual/00001012931400.zettel.

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id: 00001012931400
title: Encoding of Sz Block Elements
role: manual
tags: #api #manual #reference #zettelstore
syntax: zmk
created: 20230403161803
modified: 20240123120132

=== ''PARA''
:::syntax
__Paragraph__ **=** ''(PARA'' [[__InlineElement__|00001012931600]] &hellip; '')''.
:::
A paragraph is just a list of inline elements.







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id: 00001012931400
title: Encoding of Sz Block Elements
role: manual
tags: #api #manual #reference #zettelstore
syntax: zmk
created: 20230403161803
modified: 20230405132916

=== ''PARA''
:::syntax
__Paragraph__ **=** ''(PARA'' [[__InlineElement__|00001012931600]] &hellip; '')''.
:::
A paragraph is just a list of inline elements.

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=== ''DESCRIPTION''
:::syntax
__Description__ **=** ''(DESCRIPTION'' __DescriptionTerm__ __DescriptionValues__ __DescriptionTerm__ __DescriptionValues__ &hellip; '')''.
:::
A description is a sequence of one ore more terms and values.

:::syntax
__DescriptionTerm__ **=** ''('' [[__InlineElement__|00001012931600]] &hellip; '')''.
:::
A description term is just an inline-structured value.

:::syntax
__DescriptionValues__ **=** ''(BLOCK'' [[__Block__|00001012931000#block]] &hellip; '')''.
:::
Description values are sequences of blocks.

=== ''TABLE''
:::syntax
__Table__ **=** ''(TABLE'' __TableHeader__ __TableRow__ &hellip; '')''.
:::
A table is a table header and a sequence of table rows.

:::syntax
__TableHeader__ **=** ''()'' **|** ''('' __TableCell__ &hellip; '')''.
:::
A table header is either the empty list or a list of table cells.

:::syntax
__TableRow__ **=** ''('' __TableCell__ &hellip; '')''.
:::
A table row is a list of table cells.

=== ''CELL'', ''CELL-*''
There are four kinds of table cells, one for each possible cell alignment.
The structure is the same for all kind.

:::syntax
__TableCell__ **=** __DefaultCell__ **|** __CenterCell__ **|** __LeftCell__ **|** __RightCell__.







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=== ''DESCRIPTION''
:::syntax
__Description__ **=** ''(DESCRIPTION'' __DescriptionTerm__ __DescriptionValues__ __DescriptionTerm__ __DescriptionValues__ &hellip; '')''.
:::
A description is a sequence of one ore more terms and values.

:::syntax
__DescriptionTerm__ **=** [[__Inline__|00001012931000#inline]].
:::
A description term is just an inline-structured value.

:::syntax
__DescriptionValues__ **=** ''(BLOCK'' [[__Block__|00001012931000#block]] &hellip; '')''.
:::
Description values are sequences of blocks.

=== ''TABLE''
:::syntax
__Table__ **=** ''(TABLE'' __TableHeader__ __TableRow__ &hellip; '')''.
:::
A table is a table header and a sequence of table rows.

:::syntax
__TableHeader__ **=** ''()'' **|** ''(list'' __TableCell__ &hellip; '')''.
:::
A table header is either the empty list or a list of table cells stating with the ''list'' symbol.

:::syntax
__TableRow__ **=** ''(list'' __TableCell__ &hellip; '')''.
:::
A table row is a list with the initial symbol ''list'', followed by table cells.

=== ''CELL'', ''CELL-*''
There are four kinds of table cells, one for each possible cell alignment.
The structure is the same for all kind.

:::syntax
__TableCell__ **=** __DefaultCell__ **|** __CenterCell__ **|** __LeftCell__ **|** __RightCell__.
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=== ''REGION-*''
The following lists specifies different kinds of regions.
A region treat a sequence of block elements to be belonging together in certain ways.
The have a similar structure.

:::syntax
__BlockRegion__ **=** ''(REGION-BLOCK'' [[__Attributes__|00001012931000#attribute]] ''('' [[__BlockElement__|00001012931400]] &hellip; '')'' [[__InlineElement__|00001012931600]] &hellip; '')''.
:::
A block region just treats the block to belong in an unspecified way.
Typically, the reason is given in the attributes.
The inline describes the block.

:::syntax
__QuoteRegion__ **=** ''(REGION-QUOTE'' [[__Attributes__|00001012931000#attribute]] ''('' [[__BlockElement__|00001012931400]] &hellip; '')'' [[__InlineElement__|00001012931600]] &hellip; '')''.
:::
A block region just treats the block to contain a longer quotation.
Attributes may further specify the quotation.
The inline typically describes author / source of the quotation.

:::syntax
__VerseRegion__ **=** ''(REGION-VERSE'' [[__Attributes__|00001012931000#attribute]] ''('' [[__BlockElement__|00001012931400]] &hellip; '')'' [[__InlineElement__|00001012931600]] &hellip; '')''.
:::
A block region just treats the block to contain a verse.
Soft line break are transformed into hard line breaks to save the structure of the verse / poem.
Attributes may further specify something.
The inline typically describes author / source of the verse.

=== ''VERBATIM-*''







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=== ''REGION-*''
The following lists specifies different kinds of regions.
A region treat a sequence of block elements to be belonging together in certain ways.
The have a similar structure.

:::syntax
__BlockRegion__ **=** ''(REGION-BLOCK'' [[__Attributes__|00001012931000#attribute]] [[__Block__|00001012931000#block]] [[__Inline__|00001012931000#inline]] '')''.
:::
A block region just treats the block to belong in an unspecified way.
Typically, the reason is given in the attributes.
The inline describes the block.

:::syntax
__QuoteRegion__ **=** ''(REGION-QUOTE'' [[__Attributes__|00001012931000#attribute]] [[__Block__|00001012931000#block]] [[__Inline__|00001012931000#inline]] '')''.
:::
A block region just treats the block to contain a longer quotation.
Attributes may further specify the quotation.
The inline typically describes author / source of the quotation.

:::syntax
__VerseRegion__ **=** ''(REGION-VERSE'' [[__Attributes__|00001012931000#attribute]] [[__Block__|00001012931000#block]] [[__Inline__|00001012931000#inline]] '')''.
:::
A block region just treats the block to contain a verse.
Soft line break are transformed into hard line breaks to save the structure of the verse / poem.
Attributes may further specify something.
The inline typically describes author / source of the verse.

=== ''VERBATIM-*''
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:::syntax
__ZettelVerbatim__ **=** ''(VERBATIM-ZETTEL'' [[__Attributes__|00001012931000#attribute]] String '')''.
:::
The string contains text that should be treated as (nested) zettel content.

=== ''BLOB''
:::syntax
__BLOB__ **=** ''(BLOB'' ''('' [[__InlineElement__|00001012931600]] &hellip; '')'' String,,1,, String,,2,, '')''.
:::
A BLOB contains an image in block mode.
The inline elements states some description.
The first string contains the syntax of the image.
The second string contains the actual image.
If the syntax is ""SVG"", then the second string contains the SVG code.
Otherwise the (binary) image data is encoded with base64.

=== ''TRANSCLUDE''
:::syntax
__Transclude__ **=** ''(TRANSCLUDE'' [[__Attributes__|00001012931000#attribute]] [[__Reference__|00001012931900]] '')''.
:::
A transclude list only occurs for a parsed zettel, but not for a evaluated zettel.
Evaluating a zettel also means that all transclusions are resolved.

__Reference__ denotes the zettel to be transcluded.







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:::syntax
__ZettelVerbatim__ **=** ''(VERBATIM-ZETTEL'' [[__Attributes__|00001012931000#attribute]] String '')''.
:::
The string contains text that should be treated as (nested) zettel content.

=== ''BLOB''
:::syntax
__BLOB__ **=** ''(BLOB'' [[__Inline__|00001012931000#inline]] String,,1,, String,,2,, '')''.
:::
A BLOB contains an image in block mode.
The inline states some description.
The first string contains the syntax of the image.
The second string contains the actual image.
If the syntax is ""SVG"", then the second string contains the SVG code.
Otherwise the (binary) image data is encoded with base64.

=== ''TRANSCLUDE''
:::syntax
__Transclude__ **=** ''(TRANSCLUDE'' [[__Attributes__|00001012931000#attribute]] [[__Reference__|00001012931900]] '')''.
:::
A transclude list only occurs for a parsed zettel, but not for a evaluated zettel.
Evaluating a zettel also means that all transclusions are resolved.

__Reference__ denotes the zettel to be transcluded.

Changes to docs/manual/00001012931600.zettel.

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id: 00001012931600
title: Encoding of Sz Inline Elements
role: manual
tags: #api #manual #reference #zettelstore
syntax: zmk
created: 20230403161845
modified: 20240122122448

=== ''TEXT''
:::syntax
__Text__ **=** ''(TEXT'' String '')''.
:::
Specifies the string as some text content, typically a word.







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id: 00001012931600
title: Encoding of Sz Inline Elements
role: manual
tags: #api #manual #reference #zettelstore
syntax: zmk
created: 20230403161845
modified: 20231113191203

=== ''TEXT''
:::syntax
__Text__ **=** ''(TEXT'' String '')''.
:::
Specifies the string as some text content, typically a word.

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The first string is the mark string used in the content.
The second string is the mark string transformed to a slug, i.e. transformed to lower case, remove non-ASCII characters.
The third string is the slug string, but made unique for the whole zettel.
Then follows the marked text as a sequence of __InlineElement__s.

=== ''ENDNOTE''
:::syntax
__Endnote__ **=** ''(ENDNOTE'' [[__Attributes__|00001012931000#attribute]] [[__InlineElement__|00001012931600]] &hellip; '')''.
:::
Specifies endnote / footnote text.

=== ''FORMAT-*''
The following lists specifies some inline text formatting.
The structure is always the same, the initial symbol denotes the actual formatting.








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The first string is the mark string used in the content.
The second string is the mark string transformed to a slug, i.e. transformed to lower case, remove non-ASCII characters.
The third string is the slug string, but made unique for the whole zettel.
Then follows the marked text as a sequence of __InlineElement__s.

=== ''ENDNOTE''
:::syntax
__Endnote__ **=** ''(ENDNOTE'' [[__Attributes__|00001012931000#attribute]] ''(quote'' [[__InlineElement__|00001012931600]] &hellip; '')'''')''.
:::
Specifies endnote / footnote text.

=== ''FORMAT-*''
The following lists specifies some inline text formatting.
The structure is always the same, the initial symbol denotes the actual formatting.

Changes to docs/manual/00001012931800.zettel.

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id: 00001012931800
title: Encoding of Sz Attribute Values
role: manual
tags: #api #manual #reference #zettelstore
syntax: zmk
created: 20230403161923
modified: 20240122115245

An attribute is represented by a single cell.
The first element of the cell references the attribute key, the second value the corresponding value.

:::syntax
__AttributeKeyValue__ **=** ''('' __AttributeKey__ ''.'' __AttributeValue__ '')''.
:::

__AttributeKey__ and __AttributeValue__ are [[string values|00001012930500]].

An empty key denotes the generic attribute.

A key with the value ''"-"'' specifies the default attribute.
In this case, the attribute value is not interpreted.

Some examples:
* ''()'' represents the absence of attributes,
* ''(("-" . ""))'' represent the default attribute,
* ''(("-" . "") ("" . "syntax"))'' adds the generic attribute with the value ""syntax"",

* ''(("lang" . "en"))'' denotes the attribute key ""lang"" with a value ""en"".






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id: 00001012931800
title: Encoding of Sz Attribute Values
role: manual
tags: #api #manual #reference #zettelstore
syntax: zmk
created: 20230403161923
modified: 20230403163701

An attribute is represented by a single cell.
The first element of the cell references the attribute key, the second value the corresponding value.

:::syntax
__AttributeKeyValue__ **=** ''('' __AttributeKey__ ''.'' __AttributeValue__ '')''.
:::

__AttributeKey__ and __AttributeValue__ are [[string values|00001012930500]].

An empty key denotes the generic attribute.

A key with the value ''"-"'' specifies the default attribute.
In this case, the attribute value is not interpreted.

Some examples:
* ''()'' represents the absence of attributes,
* ''(quote (("-" . "")))'' represent the default attribute,
* ''(quote (("-" . "") ("" . "syntax")))'' adds the generic attrribute with the value ""syntax"",
* ''(quote ())'' will also represent the absence of attribute (in a more complicated way),
* ''(quote (("lang" . "en")))'' denote the attribute key ""lang"" with a value ""en"".

Changes to docs/manual/00001012931900.zettel.

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id: 00001012931900
title: Encoding of Sz Reference Values
role: manual
tags: #api #manual #reference #zettelstore
syntax: zmk
created: 20230405123046
modified: 20240122094720

A reference is encoded as the actual reference value, and a symbol describing the state of that actual reference value.

:::syntax
__Reference__ **=** ''('' __ReferenceState__ String '')''.
:::
The string contains the actual reference value.

:::syntax
__ReferenceState__ **=** ''INVALID'' **|** ''ZETTEL'' **|** ''SELF'' **|** ''FOUND'' **|** ''BROKEN'' **|** ''HOSTED'' **|** ''BASED'' **|** ''QUERY'' **|** ''EXTERNAL''.
:::

The meaning of the state symbols corresponds to that of the symbols used for the description of [[link references|00001012931600#link]].







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id: 00001012931900
title: Encoding of Sz Reference Values
role: manual
tags: #api #manual #reference #zettelstore
syntax: zmk
created: 20230405123046
modified: 20230405124516

A reference is encoded as the actual reference value, and a symbol describing the state of that actual reference value.

:::syntax
__Reference__ **=** ''(quote'' __ReferenceState__ String '')''.
:::
The ''quote'' is needed for internal reasons, the string contains the actual reference value.

:::syntax
__ReferenceState__ **=** ''INVALID'' **|** ''ZETTEL'' **|** ''SELF'' **|** ''FOUND'' **|** ''BROKEN'' **|** ''HOSTED'' **|** ''BASED'' **|** ''QUERY'' **|** ''EXTERNAL''.
:::

The meaning of the state symbols corresponds to that of the symbols used for the description of [[link references|00001012931600#link]].

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; ''FOUND''
: The reference value is a valid reference to an existing zettel.
  This value is only possible after evaluating the zettel.
; ''BROKEN''
: The reference value is a valid reference to an missing zettel.
  This value is only possible after evaluating the zettel.
; ''HOSTED''
: The reference value starts with one slash character, denoting an absolute local reference.
; ''BASED''
: The reference value starts with two slash characters, denoting a local reference interpreted relative to the Zettelstore base URL.
; ''QUERY''
: The reference value contains a query expression.
; ''EXTERNAL''
: The reference value contains a full URL, referencing a resource outside of the Zettelstore server.







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; ''FOUND''
: The reference value is a valid reference to an existing zettel.
  This value is only possible after evaluating the zettel.
; ''BROKEN''
: The reference value is a valid reference to an missing zettel.
  This value is only possible after evaluating the zettel.
; ''HOSTED''

; ''BASED''

; ''QUERY''

; ''EXTERNAL''

Changes to docs/manual/00001018000000.zettel.

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id: 00001018000000
title: Troubleshooting
role: manual
tags: #manual #zettelstore
syntax: zmk
created: 20211027105921
modified: 20240221134749

This page lists some problems and their solutions that may occur when using your Zettelstore.

=== Installation
* **Problem:** When you double-click on the Zettelstore executable icon, macOS complains that Zettelstore is an application from an unknown developer.
  Therefore, it will not start Zettelstore.
** **Solution:** Press the ''Ctrl'' key while opening the context menu of the Zettelstore executable with a right-click.





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id: 00001018000000
title: Troubleshooting
role: manual
tags: #manual #zettelstore
syntax: zmk
created: 00010101000000
modified: 20221020132617

This page lists some problems and their solutions that may occur when using your Zettelstore.

=== Installation
* **Problem:** When you double-click on the Zettelstore executable icon, macOS complains that Zettelstore is an application from an unknown developer.
  Therefore, it will not start Zettelstore.
** **Solution:** Press the ''Ctrl'' key while opening the context menu of the Zettelstore executable with a right-click.
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   The difference between these two is the missing encryption of user name / password and for the answer of the Zettelstore if you use the ''http://'' schema.
   To be secure by default, the Zettelstore will not work in an insecure environment.
** **Solution 1:** If you are sure that your communication medium is safe, even if you use the ''http:/\/'' schema (for example, you are running the Zettelstore on the same computer you are working on, or if the Zettelstore is running on a computer in your protected local network), then you could add the entry ''insecure-cookie: true'' in you [[startup configuration|00001004010000#insecure-cookie]] file.
** **Solution 2:** If you are not sure about the security of your communication medium (for example, if unknown persons might use your local network), then you should run an [[external server|00001010090100]] in front of your Zettelstore to enable the use of the ''https://'' schema.

=== Working with Zettel Files
* **Problem:** When you delete a zettel file by removing it from the ""disk"", e.g. by dropping it into the trash folder, by dragging into another folder, or by removing it from the command line, Zettelstore sometimes did not detect that change.
  If you access the zettel via Zettelstore, an error is reported.
** **Explanation:** Sometimes, the operating system does not tell Zettelstore about the removed zettel.
   This occurs mostly under MacOS.
** **Solution 1:** If you are running Zettelstore in [[""simple-mode""|00001004051100]] or if you have enabled [[''expert-mode''|00001004020000#expert-mode]], you are allowed to refresh the internal data by selecting ""Refresh"" in the Web User Interface (you find it in the menu ""Lists"").
** **Solution 2:** There is an [[API|00001012080500]] call to make Zettelstore aware of this change.
** **Solution 3:** If you have an enabled [[Administrator Console|00001004100000]] you can use the command [[''refresh''|00001004101000#refresh]] to make your changes visible.
** **Solution 4:** You configure the zettel box as [[""simple""|00001004011400]].








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   The difference between these two is the missing encryption of user name / password and for the answer of the Zettelstore if you use the ''http://'' schema.
   To be secure by default, the Zettelstore will not work in an insecure environment.
** **Solution 1:** If you are sure that your communication medium is safe, even if you use the ''http:/\/'' schema (for example, you are running the Zettelstore on the same computer you are working on, or if the Zettelstore is running on a computer in your protected local network), then you could add the entry ''insecure-cookie: true'' in you [[startup configuration|00001004010000#insecure-cookie]] file.
** **Solution 2:** If you are not sure about the security of your communication medium (for example, if unknown persons might use your local network), then you should run an [[external server|00001010090100]] in front of your Zettelstore to enable the use of the ''https://'' schema.

=== Working with Zettel Files
* **Problem:** When you delete a zettel file by removing it from the ""disk"", e.g. by dropping it into the trash folder, by dragging into another folder, or by removing it from the command line, Zettelstore sometimes did not detect that change.
  If you access the zettel via Zettelstore, a fatal error is reported.
** **Explanation:** Sometimes, the operating system does not tell Zettelstore about the removed zettel.
   This occurs mostly under MacOS.
** **Solution 1:** If you are running Zettelstore in [[""simple-mode""|00001004051100]] or if you have enabled [[''expert-mode''|00001004020000#expert-mode]], you are allowed to refresh the internal data by selecting ""Refresh"" in the Web User Interface (you find it in the menu ""Lists"").
** **Solution 2:** There is an [[API|00001012080500]] call to make Zettelstore aware of this change.
** **Solution 3:** If you have an enabled [[Administrator Console|00001004100000]] you can use the command [[''refresh''|00001004101000#refresh]] to make your changes visible.
** **Solution 4:** You configure the zettel box as [[""simple""|00001004011400]].

Changes to encoder/encoder.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package encoder provides a generic interface to encode the abstract syntax
// tree into some text form.
package encoder

import (








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package encoder provides a generic interface to encode the abstract syntax
// tree into some text form.
package encoder

import (

Changes to encoder/encoder_blob_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package encoder_test

import (
	"testing"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/input"
	"zettelstore.de/z/config"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"

	_ "zettelstore.de/z/parser/blob" // Allow to use BLOB parser.
)









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<
<








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package encoder_test

import (
	"testing"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/z/config"
	"zettelstore.de/z/input"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"

	_ "zettelstore.de/z/parser/blob" // Allow to use BLOB parser.
)

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			0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x08, 0x00, 0x00, 0x00, 0x00, 0x3a, 0x7e, 0x9b,
			0x55, 0x00, 0x00, 0x00, 0x0a, 0x49, 0x44, 0x41, 0x54, 0x78, 0x9c, 0x63, 0x62, 0x00, 0x00, 0x00,
			0x06, 0x00, 0x03, 0x36, 0x37, 0x7c, 0xa8, 0x00, 0x00, 0x00, 0x00, 0x49, 0x45, 0x4e, 0x44, 0xae,
			0x42, 0x60, 0x82,
		},
		expect: expectMap{
			encoderHTML:  `<p><img alt="PNG" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAAAAAA6fptVAAAACklEQVR4nGNiAAAABgADNjd8qAAAAABJRU5ErkJggg=="></p>`,
			encoderSz:    `(BLOCK (BLOB ((TEXT "PNG")) "png" "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAAAAAA6fptVAAAACklEQVR4nGNiAAAABgADNjd8qAAAAABJRU5ErkJggg=="))`,
			encoderSHTML: `((p (img (@ (alt . "PNG") (src . "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAAAAAA6fptVAAAACklEQVR4nGNiAAAABgADNjd8qAAAAABJRU5ErkJggg==")))))`,
			encoderText:  "",
			encoderZmk:   `%% Unable to display BLOB with description 'PNG' and syntax 'png'.`,
		},
	},
}








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			0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x08, 0x00, 0x00, 0x00, 0x00, 0x3a, 0x7e, 0x9b,
			0x55, 0x00, 0x00, 0x00, 0x0a, 0x49, 0x44, 0x41, 0x54, 0x78, 0x9c, 0x63, 0x62, 0x00, 0x00, 0x00,
			0x06, 0x00, 0x03, 0x36, 0x37, 0x7c, 0xa8, 0x00, 0x00, 0x00, 0x00, 0x49, 0x45, 0x4e, 0x44, 0xae,
			0x42, 0x60, 0x82,
		},
		expect: expectMap{
			encoderHTML:  `<p><img alt="PNG" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAAAAAA6fptVAAAACklEQVR4nGNiAAAABgADNjd8qAAAAABJRU5ErkJggg=="></p>`,
			encoderSz:    `(BLOCK (BLOB (INLINE (TEXT "PNG")) "png" "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAAAAAA6fptVAAAACklEQVR4nGNiAAAABgADNjd8qAAAAABJRU5ErkJggg=="))`,
			encoderSHTML: `((p (img (@ (alt . "PNG") (src . "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAAAAAA6fptVAAAACklEQVR4nGNiAAAABgADNjd8qAAAAABJRU5ErkJggg==")))))`,
			encoderText:  "",
			encoderZmk:   `%% Unable to display BLOB with description 'PNG' and syntax 'png'.`,
		},
	},
}

Changes to encoder/encoder_block_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package encoder_test

var tcsBlock = []zmkTestCase{
	{
		descr: "Empty Zettelmarkup should produce near nothing",








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package encoder_test

var tcsBlock = []zmkTestCase{
	{
		descr: "Empty Zettelmarkup should produce near nothing",
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	},
	{
		descr: "Rendered block comment",
		zmk:   "%%%{-}\nRender\n%%%",
		expect: expectMap{
			encoderHTML:  "<!--\nRender\n-->\n",
			encoderMD:    "",
			encoderSz:    `(BLOCK (VERBATIM-COMMENT (("-" . "")) "Render"))`,
			encoderSHTML: "((@@@ \"Render\"))",
			encoderText:  ``,
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Simple Heading",
		zmk:   `=== Top Job`,
		expect: expectMap{
			encoderHTML:  "<h2 id=\"top-job\">Top Job</h2>",
			encoderMD:    "# Top Job",
			encoderSz:    `(BLOCK (HEADING 1 () "top-job" "top-job" (TEXT "Top") (SPACE) (TEXT "Job")))`,
			encoderSHTML: `((h2 (@ (id . "top-job")) "Top" " " "Job"))`,
			encoderText:  `Top Job`,
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Simple List",
		zmk:   "* A\n* B\n* C",
		expect: expectMap{







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	},
	{
		descr: "Rendered block comment",
		zmk:   "%%%{-}\nRender\n%%%",
		expect: expectMap{
			encoderHTML:  "<!--\nRender\n-->\n",
			encoderMD:    "",
			encoderSz:    `(BLOCK (VERBATIM-COMMENT (quote (("-" . ""))) "Render"))`,
			encoderSHTML: "((@@@ \"Render\"))",
			encoderText:  ``,
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Simple Heading",
		zmk:   `=== Top`,
		expect: expectMap{
			encoderHTML:  "<h2 id=\"top\">Top</h2>",
			encoderMD:    "# Top",
			encoderSz:    `(BLOCK (HEADING 1 () "top" "top" (INLINE (TEXT "Top"))))`,
			encoderSHTML: `((h2 (@ (id . "top")) "Top"))`,
			encoderText:  `Top`,
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Simple List",
		zmk:   "* A\n* B\n* C",
		expect: expectMap{
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	},
	{
		descr: "Thematic break with attribute",
		zmk:   `---{lang="zmk"}`,
		expect: expectMap{
			encoderHTML:  `<hr lang="zmk">`,
			encoderMD:    "---",
			encoderSz:    `(BLOCK (THEMATIC (("lang" . "zmk"))))`,
			encoderSHTML: `((hr (@ (lang . "zmk"))))`,
			encoderText:  ``,
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "No list after paragraph",







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	},
	{
		descr: "Thematic break with attribute",
		zmk:   `---{lang="zmk"}`,
		expect: expectMap{
			encoderHTML:  `<hr lang="zmk">`,
			encoderMD:    "---",
			encoderSz:    `(BLOCK (THEMATIC (quote (("lang" . "zmk")))))`,
			encoderSHTML: `((hr (@ (lang . "zmk"))))`,
			encoderText:  ``,
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "No list after paragraph",
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			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Simple List Quote",
		zmk:   "> ToBeOrNotToBe",
		expect: expectMap{
			encoderHTML:  "<blockquote>ToBeOrNotToBe</blockquote>",
			encoderMD:    "> ToBeOrNotToBe",
			encoderSz:    `(BLOCK (QUOTATION (INLINE (TEXT "ToBeOrNotToBe"))))`,
			encoderSHTML: `((blockquote (@L "ToBeOrNotToBe")))`,
			encoderText:  "ToBeOrNotToBe",
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Simple Quote Block",
		zmk:   "<<<\nToBeOrNotToBe\n<<< Romeo Julia",
		expect: expectMap{
			encoderHTML:  "<blockquote><p>ToBeOrNotToBe</p><cite>Romeo Julia</cite></blockquote>",
			encoderMD:    "> ToBeOrNotToBe",
			encoderSz:    `(BLOCK (REGION-QUOTE () ((PARA (TEXT "ToBeOrNotToBe"))) (TEXT "Romeo") (SPACE) (TEXT "Julia")))`,
			encoderSHTML: `((blockquote (p "ToBeOrNotToBe") (cite "Romeo" " " "Julia")))`,
			encoderText:  "ToBeOrNotToBe\nRomeo Julia",
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Quote Block with multiple paragraphs",
		zmk:   "<<<\nToBeOr\n\nNotToBe\n<<< Romeo",
		expect: expectMap{
			encoderHTML:  "<blockquote><p>ToBeOr</p><p>NotToBe</p><cite>Romeo</cite></blockquote>",
			encoderMD:    "> ToBeOr\n\n> NotToBe",
			encoderSz:    `(BLOCK (REGION-QUOTE () ((PARA (TEXT "ToBeOr")) (PARA (TEXT "NotToBe"))) (TEXT "Romeo")))`,
			encoderSHTML: `((blockquote (p "ToBeOr") (p "NotToBe") (cite "Romeo")))`,
			encoderText:  "ToBeOr\nNotToBe\nRomeo",
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Verse block",
		zmk: `"""
A line
  another line
Back

Paragraph

    Spacy  Para
""" Author`,
		expect: expectMap{
			encoderHTML:  "<div><p>A\u00a0line<br>\u00a0\u00a0another\u00a0line<br>Back</p><p>Paragraph</p><p>\u00a0\u00a0\u00a0\u00a0Spacy\u00a0\u00a0Para</p><cite>Author</cite></div>",
			encoderMD:    "",
			encoderSz:    "(BLOCK (REGION-VERSE () ((PARA (TEXT \"A\") (SPACE \"\u00a0\") (TEXT \"line\") (HARD) (SPACE \"\u00a0\u00a0\") (TEXT \"another\") (SPACE \"\u00a0\") (TEXT \"line\") (HARD) (TEXT \"Back\")) (PARA (TEXT \"Paragraph\")) (PARA (SPACE \"\u00a0\u00a0\u00a0\u00a0\") (TEXT \"Spacy\") (SPACE \"\u00a0\u00a0\") (TEXT \"Para\"))) (TEXT \"Author\")))",
			encoderSHTML: "((div (p \"A\" \"\u00a0\" \"line\" (br) \"\u00a0\u00a0\" \"another\" \"\u00a0\" \"line\" (br) \"Back\") (p \"Paragraph\") (p \"\u00a0\u00a0\u00a0\u00a0\" \"Spacy\" \"\u00a0\u00a0\" \"Para\") (cite \"Author\")))",
			encoderText:  "A line\n another line\nBack\nParagraph\n Spacy Para\nAuthor",
			encoderZmk:   "\"\"\"\nA\u00a0line\\\n\u00a0\u00a0another\u00a0line\\\nBack\nParagraph\n\u00a0\u00a0\u00a0\u00a0Spacy\u00a0\u00a0Para\n\"\"\" Author",
		},
	},
	{
		descr: "Span Block",
		zmk: `:::
A simple
   span
and much more
:::`,
		expect: expectMap{
			encoderHTML:  "<div><p>A simple  span and much more</p></div>",
			encoderMD:    "",
			encoderSz:    `(BLOCK (REGION-BLOCK () ((PARA (TEXT "A") (SPACE) (TEXT "simple") (SOFT) (SPACE) (TEXT "span") (SOFT) (TEXT "and") (SPACE) (TEXT "much") (SPACE) (TEXT "more")))))`,
			encoderSHTML: `((div (p "A" " " "simple" " " " " "span" " " "and" " " "much" " " "more")))`,
			encoderText:  `A simple  span and much more`,
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Simple Verbatim Code",







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			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Simple List Quote",
		zmk:   "> ToBeOrNotToBe",
		expect: expectMap{
			encoderHTML:  "<blockquote><p>ToBeOrNotToBe</p></blockquote>",
			encoderMD:    "> ToBeOrNotToBe",
			encoderSz:    `(BLOCK (QUOTATION (INLINE (TEXT "ToBeOrNotToBe"))))`,
			encoderSHTML: `((blockquote (p "ToBeOrNotToBe")))`,
			encoderText:  "ToBeOrNotToBe",
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Simple Quote Block",
		zmk:   "<<<\nToBeOrNotToBe\n<<< Romeo",
		expect: expectMap{
			encoderHTML:  "<blockquote><p>ToBeOrNotToBe</p><cite>Romeo</cite></blockquote>",
			encoderMD:    "> ToBeOrNotToBe",
			encoderSz:    `(BLOCK (REGION-QUOTE () (BLOCK (PARA (TEXT "ToBeOrNotToBe"))) (INLINE (TEXT "Romeo"))))`,
			encoderSHTML: `((blockquote (p "ToBeOrNotToBe") (cite "Romeo")))`,
			encoderText:  "ToBeOrNotToBe\nRomeo",
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Quote Block with multiple paragraphs",
		zmk:   "<<<\nToBeOr\n\nNotToBe\n<<< Romeo",
		expect: expectMap{
			encoderHTML:  "<blockquote><p>ToBeOr</p><p>NotToBe</p><cite>Romeo</cite></blockquote>",
			encoderMD:    "> ToBeOr\n\n> NotToBe",
			encoderSz:    `(BLOCK (REGION-QUOTE () (BLOCK (PARA (TEXT "ToBeOr")) (PARA (TEXT "NotToBe"))) (INLINE (TEXT "Romeo"))))`,
			encoderSHTML: `((blockquote (p "ToBeOr") (p "NotToBe") (cite "Romeo")))`,
			encoderText:  "ToBeOr\nNotToBe\nRomeo",
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Verse block",
		zmk: `"""
A line
  another line
Back

Paragraph

    Spacy  Para
""" Author`,
		expect: expectMap{
			encoderHTML:  "<div><p>A\u00a0line<br>\u00a0\u00a0another\u00a0line<br>Back</p><p>Paragraph</p><p>\u00a0\u00a0\u00a0\u00a0Spacy\u00a0\u00a0Para</p><cite>Author</cite></div>",
			encoderMD:    "",
			encoderSz:    "(BLOCK (REGION-VERSE () (BLOCK (PARA (TEXT \"A\") (SPACE \"\u00a0\") (TEXT \"line\") (HARD) (SPACE \"\u00a0\u00a0\") (TEXT \"another\") (SPACE \"\u00a0\") (TEXT \"line\") (HARD) (TEXT \"Back\")) (PARA (TEXT \"Paragraph\")) (PARA (SPACE \"\u00a0\u00a0\u00a0\u00a0\") (TEXT \"Spacy\") (SPACE \"\u00a0\u00a0\") (TEXT \"Para\"))) (INLINE (TEXT \"Author\"))))",
			encoderSHTML: "((div (p \"A\" \"\u00a0\" \"line\" (br) \"\u00a0\u00a0\" \"another\" \"\u00a0\" \"line\" (br) \"Back\") (p \"Paragraph\") (p \"\u00a0\u00a0\u00a0\u00a0\" \"Spacy\" \"\u00a0\u00a0\" \"Para\") (cite \"Author\")))",
			encoderText:  "A line\n another line\nBack\nParagraph\n Spacy Para\nAuthor",
			encoderZmk:   "\"\"\"\nA\u00a0line\\\n\u00a0\u00a0another\u00a0line\\\nBack\nParagraph\n\u00a0\u00a0\u00a0\u00a0Spacy\u00a0\u00a0Para\n\"\"\" Author",
		},
	},
	{
		descr: "Span Block",
		zmk: `:::
A simple
   span
and much more
:::`,
		expect: expectMap{
			encoderHTML:  "<div><p>A simple  span and much more</p></div>",
			encoderMD:    "",
			encoderSz:    `(BLOCK (REGION-BLOCK () (BLOCK (PARA (TEXT "A") (SPACE) (TEXT "simple") (SOFT) (SPACE) (TEXT "span") (SOFT) (TEXT "and") (SPACE) (TEXT "much") (SPACE) (TEXT "more"))) (INLINE)))`,
			encoderSHTML: `((div (p "A" " " "simple" " " " " "span" " " "and" " " "much" " " "more")))`,
			encoderText:  `A simple  span and much more`,
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Simple Verbatim Code",
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	},
	{
		descr: "Simple Verbatim Code with visible spaces",
		zmk:   "```{-}\nHello World\n```",
		expect: expectMap{
			encoderHTML:  "<pre><code>Hello\u2423World</code></pre>",
			encoderMD:    "    Hello World",
			encoderSz:    `(BLOCK (VERBATIM-CODE (("-" . "")) "Hello World"))`,
			encoderSHTML: "((pre (code \"Hello\u2423World\")))",
			encoderText:  "Hello World",
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Simple Verbatim Eval",







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	},
	{
		descr: "Simple Verbatim Code with visible spaces",
		zmk:   "```{-}\nHello World\n```",
		expect: expectMap{
			encoderHTML:  "<pre><code>Hello\u2423World</code></pre>",
			encoderMD:    "    Hello World",
			encoderSz:    `(BLOCK (VERBATIM-CODE (quote (("-" . ""))) "Hello World"))`,
			encoderSHTML: "((pre (code \"Hello\u2423World\")))",
			encoderText:  "Hello World",
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Simple Verbatim Eval",
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	},
	{
		descr: "Simple Description List",
		zmk:   "; Zettel\n: Paper\n: Note\n; Zettelkasten\n: Slip box",
		expect: expectMap{
			encoderHTML:  "<dl><dt>Zettel</dt><dd><p>Paper</p></dd><dd><p>Note</p></dd><dt>Zettelkasten</dt><dd><p>Slip box</p></dd></dl>",
			encoderMD:    "",
			encoderSz:    `(BLOCK (DESCRIPTION ((TEXT "Zettel")) (BLOCK (BLOCK (PARA (TEXT "Paper"))) (BLOCK (PARA (TEXT "Note")))) ((TEXT "Zettelkasten")) (BLOCK (BLOCK (PARA (TEXT "Slip") (SPACE) (TEXT "box"))))))`,
			encoderSHTML: `((dl (dt "Zettel") (dd (p "Paper")) (dd (p "Note")) (dt "Zettelkasten") (dd (p "Slip" " " "box"))))`,
			encoderText:  "Zettel\nPaper\nNote\nZettelkasten\nSlip box",
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Description List with paragraphs as item",
		zmk:   "; Zettel\n: Paper\n\n  Note\n; Zettelkasten\n: Slip box",
		expect: expectMap{
			encoderHTML:  "<dl><dt>Zettel</dt><dd><p>Paper</p><p>Note</p></dd><dt>Zettelkasten</dt><dd><p>Slip box</p></dd></dl>",
			encoderMD:    "",
			encoderSz:    `(BLOCK (DESCRIPTION ((TEXT "Zettel")) (BLOCK (BLOCK (PARA (TEXT "Paper")) (PARA (TEXT "Note")))) ((TEXT "Zettelkasten")) (BLOCK (BLOCK (PARA (TEXT "Slip") (SPACE) (TEXT "box"))))))`,
			encoderSHTML: `((dl (dt "Zettel") (dd (p "Paper") (p "Note")) (dt "Zettelkasten") (dd (p "Slip" " " "box"))))`,
			encoderText:  "Zettel\nPaper\nNote\nZettelkasten\nSlip box",
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Description List with keys, but no descriptions",
		zmk:   "; K1\n: D11\n: D12\n; K2\n; K3\n: D31",
		expect: expectMap{
			encoderHTML:  "<dl><dt>K1</dt><dd><p>D11</p></dd><dd><p>D12</p></dd><dt>K2</dt><dt>K3</dt><dd><p>D31</p></dd></dl>",
			encoderMD:    "",
			encoderSz:    `(BLOCK (DESCRIPTION ((TEXT "K1")) (BLOCK (BLOCK (PARA (TEXT "D11"))) (BLOCK (PARA (TEXT "D12")))) ((TEXT "K2")) (BLOCK) ((TEXT "K3")) (BLOCK (BLOCK (PARA (TEXT "D31"))))))`,
			encoderSHTML: `((dl (dt "K1") (dd (p "D11")) (dd (p "D12")) (dt "K2") (dt "K3") (dd (p "D31"))))`,
			encoderText:  "K1\nD11\nD12\nK2\nK3\nD31",
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Simple Table",
		zmk:   "|c1|c2|c3\n|d1||d3",
		expect: expectMap{
			encoderHTML:  `<table><tbody><tr><td>c1</td><td>c2</td><td>c3</td></tr><tr><td>d1</td><td></td><td>d3</td></tr></tbody></table>`,
			encoderMD:    "",
			encoderSz:    `(BLOCK (TABLE () ((CELL (TEXT "c1")) (CELL (TEXT "c2")) (CELL (TEXT "c3"))) ((CELL (TEXT "d1")) (CELL) (CELL (TEXT "d3")))))`,
			encoderSHTML: `((table (tbody (tr (td "c1") (td "c2") (td "c3")) (tr (td "d1") (td) (td "d3")))))`,
			encoderText:  "c1 c2 c3\nd1  d3",
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Table with alignment and comment",
		zmk: `|h1>|=h2|h3:|
|%--+---+---+
|<c1|c2|:c3|
|f1|f2|=f3`,
		expect: expectMap{
			encoderHTML:  `<table><thead><tr><td class="right">h1</td><td>h2</td><td class="center">h3</td></tr></thead><tbody><tr><td class="left">c1</td><td>c2</td><td class="center">c3</td></tr><tr><td class="right">f1</td><td>f2</td><td class="center">=f3</td></tr></tbody></table>`,
			encoderMD:    "",
			encoderSz:    `(BLOCK (TABLE ((CELL-RIGHT (TEXT "h1")) (CELL (TEXT "h2")) (CELL-CENTER (TEXT "h3"))) ((CELL-LEFT (TEXT "c1")) (CELL (TEXT "c2")) (CELL-CENTER (TEXT "c3"))) ((CELL-RIGHT (TEXT "f1")) (CELL (TEXT "f2")) (CELL-CENTER (TEXT "=f3")))))`,
			encoderSHTML: `((table (thead (tr (td (@ (class . "right")) "h1") (td "h2") (td (@ (class . "center")) "h3"))) (tbody (tr (td (@ (class . "left")) "c1") (td "c2") (td (@ (class . "center")) "c3")) (tr (td (@ (class . "right")) "f1") (td "f2") (td (@ (class . "center")) "=f3")))))`,
			encoderText:  "h1 h2 h3\nc1 c2 c3\nf1 f2 =f3",
			encoderZmk: `|=h1>|=h2|=h3:
|<c1|c2|c3
|f1|f2|=f3`,
		},
	},
	{
		descr: "Simple Endnote",
		zmk:   `Text[^Endnote]`,
		expect: expectMap{
			encoderHTML:  "<p>Text<sup id=\"fnref:1\"><a class=\"zs-noteref\" href=\"#fn:1\" role=\"doc-noteref\">1</a></sup></p><ol class=\"zs-endnotes\"><li class=\"zs-endnote\" id=\"fn:1\" role=\"doc-endnote\" value=\"1\">Endnote <a class=\"zs-endnote-backref\" href=\"#fnref:1\" role=\"doc-backlink\">\u21a9\ufe0e</a></li></ol>",
			encoderMD:    "Text",
			encoderSz:    `(BLOCK (PARA (TEXT "Text") (ENDNOTE () (TEXT "Endnote"))))`,
			encoderSHTML: "((p \"Text\" (sup (@ (id . \"fnref:1\")) (a (@ (class . \"zs-noteref\") (href . \"#fn:1\") (role . \"doc-noteref\")) \"1\"))))",
			encoderText:  "Text Endnote",
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Nested Endnotes",
		zmk:   `Text[^Endnote[^Nested]]`,
		expect: expectMap{
			encoderHTML:  "<p>Text<sup id=\"fnref:1\"><a class=\"zs-noteref\" href=\"#fn:1\" role=\"doc-noteref\">1</a></sup></p><ol class=\"zs-endnotes\"><li class=\"zs-endnote\" id=\"fn:1\" role=\"doc-endnote\" value=\"1\">Endnote<sup id=\"fnref:2\"><a class=\"zs-noteref\" href=\"#fn:2\" role=\"doc-noteref\">2</a></sup> <a class=\"zs-endnote-backref\" href=\"#fnref:1\" role=\"doc-backlink\">\u21a9\ufe0e</a></li><li class=\"zs-endnote\" id=\"fn:2\" role=\"doc-endnote\" value=\"2\">Nested <a class=\"zs-endnote-backref\" href=\"#fnref:2\" role=\"doc-backlink\">\u21a9\ufe0e</a></li></ol>",
			encoderMD:    "Text",
			encoderSz:    `(BLOCK (PARA (TEXT "Text") (ENDNOTE () (TEXT "Endnote") (ENDNOTE () (TEXT "Nested")))))`,
			encoderSHTML: "((p \"Text\" (sup (@ (id . \"fnref:1\")) (a (@ (class . \"zs-noteref\") (href . \"#fn:1\") (role . \"doc-noteref\")) \"1\"))))",
			encoderText:  "Text Endnote Nested",
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Transclusion",
		zmk:   `{{{http://example.com/image}}}{width="100px"}`,
		expect: expectMap{
			encoderHTML:  `<p><img class="external" src="http://example.com/image" width="100px"></p>`,
			encoderMD:    "",
			encoderSz:    `(BLOCK (TRANSCLUDE (("width" . "100px")) (EXTERNAL "http://example.com/image")))`,
			encoderSHTML: `((p (img (@ (class . "external") (src . "http://example.com/image") (width . "100px")))))`,
			encoderText:  "",
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "A paragraph with a inline comment only should be empty in HTML",







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	},
	{
		descr: "Simple Description List",
		zmk:   "; Zettel\n: Paper\n: Note\n; Zettelkasten\n: Slip box",
		expect: expectMap{
			encoderHTML:  "<dl><dt>Zettel</dt><dd><p>Paper</p></dd><dd><p>Note</p></dd><dt>Zettelkasten</dt><dd><p>Slip box</p></dd></dl>",
			encoderMD:    "",
			encoderSz:    `(BLOCK (DESCRIPTION (INLINE (TEXT "Zettel")) (BLOCK (BLOCK (PARA (TEXT "Paper"))) (BLOCK (PARA (TEXT "Note")))) (INLINE (TEXT "Zettelkasten")) (BLOCK (BLOCK (PARA (TEXT "Slip") (SPACE) (TEXT "box"))))))`,
			encoderSHTML: `((dl (dt "Zettel") (dd (p "Paper")) (dd (p "Note")) (dt "Zettelkasten") (dd (p "Slip" " " "box"))))`,
			encoderText:  "Zettel\nPaper\nNote\nZettelkasten\nSlip box",
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Description List with paragraphs as item",
		zmk:   "; Zettel\n: Paper\n\n  Note\n; Zettelkasten\n: Slip box",
		expect: expectMap{
			encoderHTML:  "<dl><dt>Zettel</dt><dd><p>Paper</p><p>Note</p></dd><dt>Zettelkasten</dt><dd><p>Slip box</p></dd></dl>",
			encoderMD:    "",
			encoderSz:    `(BLOCK (DESCRIPTION (INLINE (TEXT "Zettel")) (BLOCK (BLOCK (PARA (TEXT "Paper")) (PARA (TEXT "Note")))) (INLINE (TEXT "Zettelkasten")) (BLOCK (BLOCK (PARA (TEXT "Slip") (SPACE) (TEXT "box"))))))`,
			encoderSHTML: `((dl (dt "Zettel") (dd (p "Paper") (p "Note")) (dt "Zettelkasten") (dd (p "Slip" " " "box"))))`,
			encoderText:  "Zettel\nPaper\nNote\nZettelkasten\nSlip box",
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Description List with keys, but no descriptions",
		zmk:   "; K1\n: D11\n: D12\n; K2\n; K3\n: D31",
		expect: expectMap{
			encoderHTML:  "<dl><dt>K1</dt><dd><p>D11</p></dd><dd><p>D12</p></dd><dt>K2</dt><dt>K3</dt><dd><p>D31</p></dd></dl>",
			encoderMD:    "",
			encoderSz:    `(BLOCK (DESCRIPTION (INLINE (TEXT "K1")) (BLOCK (BLOCK (PARA (TEXT "D11"))) (BLOCK (PARA (TEXT "D12")))) (INLINE (TEXT "K2")) (BLOCK) (INLINE (TEXT "K3")) (BLOCK (BLOCK (PARA (TEXT "D31"))))))`,
			encoderSHTML: `((dl (dt "K1") (dd (p "D11")) (dd (p "D12")) (dt "K2") (dt "K3") (dd (p "D31"))))`,
			encoderText:  "K1\nD11\nD12\nK2\nK3\nD31",
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Simple Table",
		zmk:   "|c1|c2|c3\n|d1||d3",
		expect: expectMap{
			encoderHTML:  `<table><tbody><tr><td>c1</td><td>c2</td><td>c3</td></tr><tr><td>d1</td><td></td><td>d3</td></tr></tbody></table>`,
			encoderMD:    "",
			encoderSz:    `(BLOCK (TABLE () (list (CELL (TEXT "c1")) (CELL (TEXT "c2")) (CELL (TEXT "c3"))) (list (CELL (TEXT "d1")) (CELL) (CELL (TEXT "d3")))))`,
			encoderSHTML: `((table (tbody (tr (td "c1") (td "c2") (td "c3")) (tr (td "d1") (td) (td "d3")))))`,
			encoderText:  "c1 c2 c3\nd1  d3",
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Table with alignment and comment",
		zmk: `|h1>|=h2|h3:|
|%--+---+---+
|<c1|c2|:c3|
|f1|f2|=f3`,
		expect: expectMap{
			encoderHTML:  `<table><thead><tr><td class="right">h1</td><td>h2</td><td class="center">h3</td></tr></thead><tbody><tr><td class="left">c1</td><td>c2</td><td class="center">c3</td></tr><tr><td class="right">f1</td><td>f2</td><td class="center">=f3</td></tr></tbody></table>`,
			encoderMD:    "",
			encoderSz:    `(BLOCK (TABLE (list (CELL-RIGHT (TEXT "h1")) (CELL (TEXT "h2")) (CELL-CENTER (TEXT "h3"))) (list (CELL-LEFT (TEXT "c1")) (CELL (TEXT "c2")) (CELL-CENTER (TEXT "c3"))) (list (CELL-RIGHT (TEXT "f1")) (CELL (TEXT "f2")) (CELL-CENTER (TEXT "=f3")))))`,
			encoderSHTML: `((table (thead (tr (td (@ (class . "right")) "h1") (td "h2") (td (@ (class . "center")) "h3"))) (tbody (tr (td (@ (class . "left")) "c1") (td "c2") (td (@ (class . "center")) "c3")) (tr (td (@ (class . "right")) "f1") (td "f2") (td (@ (class . "center")) "=f3")))))`,
			encoderText:  "h1 h2 h3\nc1 c2 c3\nf1 f2 =f3",
			encoderZmk: `|=h1>|=h2|=h3:
|<c1|c2|c3
|f1|f2|=f3`,
		},
	},
	{
		descr: "Simple Endnote",
		zmk:   `Text[^Endnote]`,
		expect: expectMap{
			encoderHTML:  "<p>Text<sup id=\"fnref:1\"><a class=\"zs-noteref\" href=\"#fn:1\" role=\"doc-noteref\">1</a></sup></p><ol class=\"zs-endnotes\"><li class=\"zs-endnote\" id=\"fn:1\" role=\"doc-endnote\" value=\"1\">Endnote <a class=\"zs-endnote-backref\" href=\"#fnref:1\" role=\"doc-backlink\">\u21a9\ufe0e</a></li></ol>",
			encoderMD:    "Text",
			encoderSz:    `(BLOCK (PARA (TEXT "Text") (ENDNOTE () (quote (INLINE (TEXT "Endnote"))))))`,
			encoderSHTML: "((p \"Text\" (sup (@ (id . \"fnref:1\")) (a (@ (class . \"zs-noteref\") (href . \"#fn:1\") (role . \"doc-noteref\")) \"1\"))))",
			encoderText:  "Text Endnote",
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Nested Endnotes",
		zmk:   `Text[^Endnote[^Nested]]`,
		expect: expectMap{
			encoderHTML:  "<p>Text<sup id=\"fnref:1\"><a class=\"zs-noteref\" href=\"#fn:1\" role=\"doc-noteref\">1</a></sup></p><ol class=\"zs-endnotes\"><li class=\"zs-endnote\" id=\"fn:1\" role=\"doc-endnote\" value=\"1\">Endnote<sup id=\"fnref:2\"><a class=\"zs-noteref\" href=\"#fn:2\" role=\"doc-noteref\">2</a></sup> <a class=\"zs-endnote-backref\" href=\"#fnref:1\" role=\"doc-backlink\">\u21a9\ufe0e</a></li><li class=\"zs-endnote\" id=\"fn:2\" role=\"doc-endnote\" value=\"2\">Nested <a class=\"zs-endnote-backref\" href=\"#fnref:2\" role=\"doc-backlink\">\u21a9\ufe0e</a></li></ol>",
			encoderMD:    "Text",
			encoderSz:    `(BLOCK (PARA (TEXT "Text") (ENDNOTE () (quote (INLINE (TEXT "Endnote") (ENDNOTE () (quote (INLINE (TEXT "Nested")))))))))`,
			encoderSHTML: "((p \"Text\" (sup (@ (id . \"fnref:1\")) (a (@ (class . \"zs-noteref\") (href . \"#fn:1\") (role . \"doc-noteref\")) \"1\"))))",
			encoderText:  "Text Endnote Nested",
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Transclusion",
		zmk:   `{{{http://example.com/image}}}{width="100px"}`,
		expect: expectMap{
			encoderHTML:  `<p><img class="external" src="http://example.com/image" width="100px"></p>`,
			encoderMD:    "",
			encoderSz:    `(BLOCK (TRANSCLUDE (quote (("width" . "100px"))) (quote (EXTERNAL "http://example.com/image"))))`,
			encoderSHTML: `((p (img (@ (class . "external") (src . "http://example.com/image") (width . "100px")))))`,
			encoderText:  "",
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "A paragraph with a inline comment only should be empty in HTML",

Changes to encoder/encoder_inline_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package encoder_test

var tcsInline = []zmkTestCase{
	{
		descr: "Empty Zettelmarkup should produce near nothing (inline)",








<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package encoder_test

var tcsInline = []zmkTestCase{
	{
		descr: "Empty Zettelmarkup should produce near nothing (inline)",
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	},
	{
		descr: "Quotes formatting (german)",
		zmk:   `""quotes""{lang=de}`,
		expect: expectMap{
			encoderHTML:  `<span lang="de">&bdquo;quotes&ldquo;</span>`,
			encoderMD:    "<q>quotes</q>",
			encoderSz:    `(INLINE (FORMAT-QUOTE (("lang" . "de")) (TEXT "quotes")))`,
			encoderSHTML: `((span (@ (lang . "de")) (@H "&bdquo;") "quotes" (@H "&ldquo;")))`,
			encoderText:  `quotes`,
			encoderZmk:   `""quotes""{lang="de"}`,
		},
	},
	{
		descr: "Empty quotes (default)",







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	},
	{
		descr: "Quotes formatting (german)",
		zmk:   `""quotes""{lang=de}`,
		expect: expectMap{
			encoderHTML:  `<span lang="de">&bdquo;quotes&ldquo;</span>`,
			encoderMD:    "<q>quotes</q>",
			encoderSz:    `(INLINE (FORMAT-QUOTE (quote (("lang" . "de"))) (TEXT "quotes")))`,
			encoderSHTML: `((span (@ (lang . "de")) (@H "&bdquo;") "quotes" (@H "&ldquo;")))`,
			encoderText:  `quotes`,
			encoderZmk:   `""quotes""{lang="de"}`,
		},
	},
	{
		descr: "Empty quotes (default)",
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	},
	{
		descr: "Empty quotes (unknown)",
		zmk:   `""""{lang=unknown}`,
		expect: expectMap{
			encoderHTML:  `<span lang="unknown">&quot;&quot;</span>`,
			encoderMD:    "<q></q>",
			encoderSz:    `(INLINE (FORMAT-QUOTE (("lang" . "unknown"))))`,
			encoderSHTML: `((span (@ (lang . "unknown")) (@H "&quot;" "&quot;")))`,
			encoderText:  ``,
			encoderZmk:   `""""{lang="unknown"}`,
		},
	},
	{
		descr: "Nested quotes (default)",







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	},
	{
		descr: "Empty quotes (unknown)",
		zmk:   `""""{lang=unknown}`,
		expect: expectMap{
			encoderHTML:  `<span lang="unknown">&quot;&quot;</span>`,
			encoderMD:    "<q></q>",
			encoderSz:    `(INLINE (FORMAT-QUOTE (quote (("lang" . "unknown")))))`,
			encoderSHTML: `((span (@ (lang . "unknown")) (@H "&quot;" "&quot;")))`,
			encoderText:  ``,
			encoderZmk:   `""""{lang="unknown"}`,
		},
	},
	{
		descr: "Nested quotes (default)",
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	},
	{
		descr: "Code formatting with visible space",
		zmk:   "``x y``{-}",
		expect: expectMap{
			encoderHTML:  "<code>x\u2423y</code>",
			encoderMD:    "`x y`",
			encoderSz:    `(INLINE (LITERAL-CODE (("-" . "")) "x y"))`,
			encoderSHTML: "((code \"x\u2423y\"))",
			encoderText:  `x y`,
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "HTML in Code formatting",







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	},
	{
		descr: "Code formatting with visible space",
		zmk:   "``x y``{-}",
		expect: expectMap{
			encoderHTML:  "<code>x\u2423y</code>",
			encoderMD:    "`x y`",
			encoderSz:    `(INLINE (LITERAL-CODE (quote (("-" . ""))) "x y"))`,
			encoderSHTML: "((code \"x\u2423y\"))",
			encoderText:  `x y`,
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "HTML in Code formatting",
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	},
	{
		descr: "Nested Span Quote formatting",
		zmk:   `::""abc""::{lang=fr}`,
		expect: expectMap{
			encoderHTML:  `<span lang="fr">&laquo;&nbsp;abc&nbsp;&raquo;</span>`,
			encoderMD:    "<q>abc</q>",
			encoderSz:    `(INLINE (FORMAT-SPAN (("lang" . "fr")) (FORMAT-QUOTE () (TEXT "abc"))))`,
			encoderSHTML: `((span (@ (lang . "fr")) (@L (@H "&laquo;" "&nbsp;") "abc" (@H "&nbsp;" "&raquo;"))))`,
			encoderText:  `abc`,
			encoderZmk:   `::""abc""::{lang="fr"}`,
		},
	},
	{
		descr: "Simple Citation",







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	},
	{
		descr: "Nested Span Quote formatting",
		zmk:   `::""abc""::{lang=fr}`,
		expect: expectMap{
			encoderHTML:  `<span lang="fr">&laquo;&nbsp;abc&nbsp;&raquo;</span>`,
			encoderMD:    "<q>abc</q>",
			encoderSz:    `(INLINE (FORMAT-SPAN (quote (("lang" . "fr"))) (FORMAT-QUOTE () (TEXT "abc"))))`,
			encoderSHTML: `((span (@ (lang . "fr")) (@L (@H "&laquo;" "&nbsp;") "abc" (@H "&nbsp;" "&raquo;"))))`,
			encoderText:  `abc`,
			encoderZmk:   `::""abc""::{lang="fr"}`,
		},
	},
	{
		descr: "Simple Citation",
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	},
	{
		descr: "Line comment",
		zmk:   `%%{-} line comment`,
		expect: expectMap{
			encoderHTML:  `<!-- line comment -->`,
			encoderMD:    "",
			encoderSz:    `(INLINE (LITERAL-COMMENT (("-" . "")) "line comment"))`,
			encoderSHTML: `((@@ "line comment"))`,
			encoderText:  ``,
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Comment after text",
		zmk:   `Text %%{-} comment`,
		expect: expectMap{
			encoderHTML:  `Text<!-- comment -->`,
			encoderMD:    "Text",
			encoderSz:    `(INLINE (TEXT "Text") (LITERAL-COMMENT (("-" . "")) "comment"))`,
			encoderSHTML: `("Text" (@@ "comment"))`,
			encoderText:  `Text`,
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Comment after text and with -->",
		zmk:   `Text %%{-} comment --> end`,
		expect: expectMap{
			encoderHTML:  `Text<!-- comment -&#45;> end -->`,
			encoderMD:    "Text",
			encoderSz:    `(INLINE (TEXT "Text") (LITERAL-COMMENT (("-" . "")) "comment --> end"))`,
			encoderSHTML: `("Text" (@@ "comment --> end"))`,
			encoderText:  `Text`,
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Simple inline endnote",
		zmk:   `[^endnote]`,
		expect: expectMap{
			encoderHTML:  `<sup id="fnref:1"><a class="zs-noteref" href="#fn:1" role="doc-noteref">1</a></sup>`,
			encoderMD:    "",
			encoderSz:    `(INLINE (ENDNOTE () (TEXT "endnote")))`,
			encoderSHTML: `((sup (@ (id . "fnref:1")) (a (@ (class . "zs-noteref") (href . "#fn:1") (role . "doc-noteref")) "1")))`,
			encoderText:  `endnote`,
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Simple mark",







|











|











|











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	},
	{
		descr: "Line comment",
		zmk:   `%%{-} line comment`,
		expect: expectMap{
			encoderHTML:  `<!-- line comment -->`,
			encoderMD:    "",
			encoderSz:    `(INLINE (LITERAL-COMMENT (quote (("-" . ""))) "line comment"))`,
			encoderSHTML: `((@@ "line comment"))`,
			encoderText:  ``,
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Comment after text",
		zmk:   `Text %%{-} comment`,
		expect: expectMap{
			encoderHTML:  `Text<!-- comment -->`,
			encoderMD:    "Text",
			encoderSz:    `(INLINE (TEXT "Text") (LITERAL-COMMENT (quote (("-" . ""))) "comment"))`,
			encoderSHTML: `("Text" (@@ "comment"))`,
			encoderText:  `Text`,
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Comment after text and with -->",
		zmk:   `Text %%{-} comment --> end`,
		expect: expectMap{
			encoderHTML:  `Text<!-- comment -&#45;> end -->`,
			encoderMD:    "Text",
			encoderSz:    `(INLINE (TEXT "Text") (LITERAL-COMMENT (quote (("-" . ""))) "comment --> end"))`,
			encoderSHTML: `("Text" (@@ "comment --> end"))`,
			encoderText:  `Text`,
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Simple inline endnote",
		zmk:   `[^endnote]`,
		expect: expectMap{
			encoderHTML:  `<sup id="fnref:1"><a class="zs-noteref" href="#fn:1" role="doc-noteref">1</a></sup>`,
			encoderMD:    "",
			encoderSz:    `(INLINE (ENDNOTE () (quote (INLINE (TEXT "endnote")))))`,
			encoderSHTML: `((sup (@ (id . "fnref:1")) (a (@ (class . "zs-noteref") (href . "#fn:1") (role . "doc-noteref")) "1")))`,
			encoderText:  `endnote`,
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Simple mark",
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	},
	{
		descr: "Dummy Embed",
		zmk:   `{{abc}}`,
		expect: expectMap{
			encoderHTML:  `<img src="abc">`,
			encoderMD:    "![abc](abc)",
			encoderSz:    `(INLINE (EMBED () (EXTERNAL "abc") ""))`,
			encoderSHTML: `((img (@ (src . "abc"))))`,
			encoderText:  ``,
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Inline HTML Zettel",







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	},
	{
		descr: "Dummy Embed",
		zmk:   `{{abc}}`,
		expect: expectMap{
			encoderHTML:  `<img src="abc">`,
			encoderMD:    "![abc](abc)",
			encoderSz:    `(INLINE (EMBED () (quote (EXTERNAL "abc")) ""))`,
			encoderSHTML: `((img (@ (src . "abc"))))`,
			encoderText:  ``,
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "Inline HTML Zettel",
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	},
	{
		descr: "Inline Text Zettel",
		zmk:   `@@<hr>@@{="text"}`,
		expect: expectMap{
			encoderHTML:  ``,
			encoderMD:    "<hr>",
			encoderSz:    `(INLINE (LITERAL-ZETTEL (("" . "text")) "<hr>"))`,
			encoderSHTML: `(())`,
			encoderText:  `<hr>`,
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "",







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	},
	{
		descr: "Inline Text Zettel",
		zmk:   `@@<hr>@@{="text"}`,
		expect: expectMap{
			encoderHTML:  ``,
			encoderMD:    "<hr>",
			encoderSz:    `(INLINE (LITERAL-ZETTEL (quote (("" . "text"))) "<hr>"))`,
			encoderSHTML: `(())`,
			encoderText:  `<hr>`,
			encoderZmk:   useZmk,
		},
	},
	{
		descr: "",

Changes to encoder/encoder_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package encoder_test

import (
	"fmt"
	"strings"
	"testing"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/input"
	"zettelstore.de/sx.fossil/sxreader"
	"zettelstore.de/z/ast"
	"zettelstore.de/z/config"
	"zettelstore.de/z/encoder"

	"zettelstore.de/z/parser"
	"zettelstore.de/z/zettel/meta"

	_ "zettelstore.de/z/encoder/htmlenc"  // Allow to use HTML encoder.
	_ "zettelstore.de/z/encoder/mdenc"    // Allow to use markdown encoder.
	_ "zettelstore.de/z/encoder/shtmlenc" // Allow to use SHTML encoder.
	_ "zettelstore.de/z/encoder/szenc"    // Allow to use sz encoder.








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<




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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package encoder_test

import (
	"fmt"
	"strings"
	"testing"

	"zettelstore.de/client.fossil/api"

	"zettelstore.de/sx.fossil/sxreader"
	"zettelstore.de/z/ast"
	"zettelstore.de/z/config"
	"zettelstore.de/z/encoder"
	"zettelstore.de/z/input"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/zettel/meta"

	_ "zettelstore.de/z/encoder/htmlenc"  // Allow to use HTML encoder.
	_ "zettelstore.de/z/encoder/mdenc"    // Allow to use markdown encoder.
	_ "zettelstore.de/z/encoder/shtmlenc" // Allow to use SHTML encoder.
	_ "zettelstore.de/z/encoder/szenc"    // Allow to use sz encoder.
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		return
	}
	val, err := sxreader.MakeReader(strings.NewReader(exp)).Read()
	if err != nil {
		t.Error(err)
		return
	}
	got := val.String()
	if exp != got {
		prefix := fmt.Sprintf("Test #%d", testNum)
		if d := descr; d != "" {
			prefix += "\nReason:   " + d
		}
		prefix += "\nMode:     " + pe.mode()
		t.Errorf("%s\n\nExpected: %q\nGot:      %q", prefix, exp, got)







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		return
	}
	val, err := sxreader.MakeReader(strings.NewReader(exp)).Read()
	if err != nil {
		t.Error(err)
		return
	}
	got := val.Repr()
	if exp != got {
		prefix := fmt.Sprintf("Test #%d", testNum)
		if d := descr; d != "" {
			prefix += "\nReason:   " + d
		}
		prefix += "\nMode:     " + pe.mode()
		t.Errorf("%s\n\nExpected: %q\nGot:      %q", prefix, exp, got)

Changes to encoder/htmlenc/htmlenc.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

// Package htmlenc encodes the abstract syntax tree into HTML5 via zettelstore-client.
package htmlenc

import (
	"io"








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<







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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package htmlenc encodes the abstract syntax tree into HTML5 via zettelstore-client.
package htmlenc

import (
	"io"
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// Create an encoder.
func Create(params *encoder.CreateParameter) *Encoder {
	// We need a new transformer every time, because tx.inVerse must be unique.
	// If we can refactor it out, the transformer can be created only once.
	return &Encoder{
		tx:      szenc.NewTransformer(),
		th:      shtml.NewEvaluator(1),
		lang:    params.Lang,
		textEnc: textenc.Create(),
	}
}

type Encoder struct {
	tx      *szenc.Transformer







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// Create an encoder.
func Create(params *encoder.CreateParameter) *Encoder {
	// We need a new transformer every time, because tx.inVerse must be unique.
	// If we can refactor it out, the transformer can be created only once.
	return &Encoder{
		tx:      szenc.NewTransformer(),
		th:      shtml.NewEvaluator(1, nil),
		lang:    params.Lang,
		textEnc: textenc.Create(),
	}
}

type Encoder struct {
	tx      *szenc.Transformer
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	xast := he.tx.GetSz(&zn.Ast)
	hast, err := he.th.Evaluate(xast, &env)
	if err != nil {
		return 0, err
	}
	hen := he.th.Endnotes(&env)



	var head sx.ListBuilder

	head.Add(shtml.SymHead)
	head.Add(sx.Nil().Cons(sx.Nil().Cons(sx.Cons(sx.MakeSymbol("charset"), sx.String("utf-8"))).Cons(sxhtml.SymAttr)).Cons(shtml.SymMeta))

	head.ExtendBang(hm)

	var sb strings.Builder
	if hasTitle {
		he.textEnc.WriteInlines(&sb, &isTitle)
	} else {
		sb.Write(zn.Meta.Zid.Bytes())
	}
	head.Add(sx.MakeList(shtml.SymAttrTitle, sx.String(sb.String())))

	var body sx.ListBuilder
	body.Add(shtml.SymBody)
	if hasTitle {
		body.Add(htitle.Cons(shtml.SymH1))
	}

	body.ExtendBang(hast)

	if hen != nil {
		body.Add(sx.Cons(shtml.SymHR, nil))
		body.Add(hen)
	}

	doc := sx.MakeList(
		sxhtml.SymDoctype,
		sx.MakeList(shtml.SymHtml, head.List(), body.List()),
	)

	gen := sxhtml.NewGenerator(sxhtml.WithNewline)
	return gen.WriteHTML(w, doc)
}

// WriteMeta encodes meta data as HTML5.
func (he *Encoder) WriteMeta(w io.Writer, m *meta.Meta, evalMeta encoder.EvalMetaFunc) (int, error) {
	env := shtml.MakeEnvironment(he.lang)
	hm, err := he.th.Evaluate(he.tx.GetMeta(m, evalMeta), &env)
	if err != nil {
		return 0, err
	}
	gen := sxhtml.NewGenerator(sxhtml.WithNewline)
	return gen.WriteListHTML(w, hm)
}

func (he *Encoder) WriteContent(w io.Writer, zn *ast.ZettelNode) (int, error) {
	return he.WriteBlocks(w, &zn.Ast)
}

// WriteBlocks encodes a block slice.
func (he *Encoder) WriteBlocks(w io.Writer, bs *ast.BlockSlice) (int, error) {
	env := shtml.MakeEnvironment(he.lang)
	hobj, err := he.th.Evaluate(he.tx.GetSz(bs), &env)
	if err == nil {
		gen := sxhtml.NewGenerator()
		length, err2 := gen.WriteListHTML(w, hobj)
		if err2 != nil {
			return length, err2
		}

		l, err2 := gen.WriteHTML(w, he.th.Endnotes(&env))
		length += l
		return length, err2
	}
	return 0, err
}

// WriteInlines writes an inline slice to the writer
func (he *Encoder) WriteInlines(w io.Writer, is *ast.InlineSlice) (int, error) {
	env := shtml.MakeEnvironment(he.lang)
	hobj, err := he.th.Evaluate(he.tx.GetSz(is), &env)
	if err == nil {
		gen := sxhtml.NewGenerator()
		length, err2 := gen.WriteListHTML(w, hobj)
		if err2 != nil {
			return length, err2
		}
		return length, nil
	}
	return 0, err
}







>
>
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>






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>
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>

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|


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|








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	xast := he.tx.GetSz(&zn.Ast)
	hast, err := he.th.Evaluate(xast, &env)
	if err != nil {
		return 0, err
	}
	hen := he.th.Endnotes(&env)

	sf := he.th.SymbolFactory()
	symAttr := sf.MustMake(sxhtml.NameSymAttr)

	head := sx.MakeList(sf.MustMake("head"))
	curr := head
	curr = curr.AppendBang(sx.Nil().Cons(sx.Nil().Cons(sx.Cons(sf.MustMake("charset"), sx.String("utf-8"))).Cons(symAttr)).Cons(sf.MustMake("meta")))
	for elem := hm; elem != nil; elem = elem.Tail() {
		curr = curr.AppendBang(elem.Car())
	}
	var sb strings.Builder
	if hasTitle {
		he.textEnc.WriteInlines(&sb, &isTitle)
	} else {
		sb.Write(zn.Meta.Zid.Bytes())
	}
	_ = curr.AppendBang(sx.Nil().Cons(sx.String(sb.String())).Cons(sf.MustMake("title")))

	body := sx.MakeList(sf.MustMake("body"))
	curr = body
	if hasTitle {
		curr = curr.AppendBang(htitle.Cons(sf.MustMake("h1")))
	}
	for elem := hast; elem != nil; elem = elem.Tail() {
		curr = curr.AppendBang(elem.Car())
	}
	if hen != nil {
		curr = curr.AppendBang(sx.Nil().Cons(sf.MustMake("hr")))
		_ = curr.AppendBang(hen)
	}

	doc := sx.MakeList(
		sf.MustMake(sxhtml.NameSymDoctype),
		sx.MakeList(sf.MustMake("html"), head, body),
	)

	gen := sxhtml.NewGenerator(sf, sxhtml.WithNewline)
	return gen.WriteHTML(w, doc)
}

// WriteMeta encodes meta data as HTML5.
func (he *Encoder) WriteMeta(w io.Writer, m *meta.Meta, evalMeta encoder.EvalMetaFunc) (int, error) {
	env := shtml.MakeEnvironment(he.lang)
	hm, err := he.th.Evaluate(he.tx.GetMeta(m, evalMeta), &env)
	if err != nil {
		return 0, err
	}
	gen := sxhtml.NewGenerator(he.th.SymbolFactory(), sxhtml.WithNewline)
	return gen.WriteListHTML(w, hm)
}

func (he *Encoder) WriteContent(w io.Writer, zn *ast.ZettelNode) (int, error) {
	return he.WriteBlocks(w, &zn.Ast)
}

// WriteBlocks encodes a block slice.
func (he *Encoder) WriteBlocks(w io.Writer, bs *ast.BlockSlice) (int, error) {
	env := shtml.MakeEnvironment(he.lang)
	hobj, err := he.th.Evaluate(he.tx.GetSz(bs), &env)
	if err == nil {
		gen := sxhtml.NewGenerator(he.th.SymbolFactory())
		length, err2 := gen.WriteListHTML(w, hobj)
		if err2 != nil {
			return length, err2
		}

		l, err2 := gen.WriteHTML(w, he.th.Endnotes(&env))
		length += l
		return length, err2
	}
	return 0, err
}

// WriteInlines writes an inline slice to the writer
func (he *Encoder) WriteInlines(w io.Writer, is *ast.InlineSlice) (int, error) {
	env := shtml.MakeEnvironment(he.lang)
	hobj, err := he.th.Evaluate(he.tx.GetSz(is), &env)
	if err == nil {
		gen := sxhtml.NewGenerator(sx.FindSymbolFactory(hobj))
		length, err2 := gen.WriteListHTML(w, hobj)
		if err2 != nil {
			return length, err2
		}
		return length, nil
	}
	return 0, err
}

Changes to encoder/mdenc/mdenc.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

// Package mdenc encodes the abstract syntax tree back into Markdown.
package mdenc

import (
	"io"








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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package mdenc encodes the abstract syntax tree back into Markdown.
package mdenc

import (
	"io"
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	case ast.LiteralComment, ast.LiteralHTML: // ignore everything
	default:
		v.b.Write(ln.Content)
	}
}

func (v *visitor) writeSpaces(n int) {
	for range n {
		v.b.WriteByte(' ')
	}
}







|



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	case ast.LiteralComment, ast.LiteralHTML: // ignore everything
	default:
		v.b.Write(ln.Content)
	}
}

func (v *visitor) writeSpaces(n int) {
	for i := 0; i < n; i++ {
		v.b.WriteByte(' ')
	}
}

Changes to encoder/shtmlenc/shtmlenc.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2023-present Detlef Stern
//-----------------------------------------------------------------------------

// Package shtmlenc encodes the abstract syntax tree into a s-expr which represents HTML.
package shtmlenc

import (
	"io"








<
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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package shtmlenc encodes the abstract syntax tree into a s-expr which represents HTML.
package shtmlenc

import (
	"io"
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// Create a SHTML encoder
func Create(params *encoder.CreateParameter) *Encoder {
	// We need a new transformer every time, because tx.inVerse must be unique.
	// If we can refactor it out, the transformer can be created only once.
	return &Encoder{
		tx:   szenc.NewTransformer(),
		th:   shtml.NewEvaluator(1),
		lang: params.Lang,
	}
}

type Encoder struct {
	tx   *szenc.Transformer
	th   *shtml.Evaluator







|







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// Create a SHTML encoder
func Create(params *encoder.CreateParameter) *Encoder {
	// We need a new transformer every time, because tx.inVerse must be unique.
	// If we can refactor it out, the transformer can be created only once.
	return &Encoder{
		tx:   szenc.NewTransformer(),
		th:   shtml.NewEvaluator(1, nil),
		lang: params.Lang,
	}
}

type Encoder struct {
	tx   *szenc.Transformer
	th   *shtml.Evaluator

Changes to encoder/szenc/szenc.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

// Package szenc encodes the abstract syntax tree into a s-expr for zettel.
package szenc

import (
	"io"








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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package szenc encodes the abstract syntax tree into a s-expr for zettel.
package szenc

import (
	"io"

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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

package szenc

import (
	"encoding/base64"
	"fmt"
	"strings"

	"zettelstore.de/client.fossil/attrs"
	"zettelstore.de/client.fossil/sz"
	"zettelstore.de/sx.fossil"
	"zettelstore.de/z/ast"
	"zettelstore.de/z/encoder"
	"zettelstore.de/z/zettel/meta"
)

// NewTransformer returns a new transformer to create s-expressions from AST nodes.
func NewTransformer() *Transformer {

	t := Transformer{}



















































































	return &t
}

type Transformer struct {











	inVerse bool
}

func (t *Transformer) GetSz(node ast.Node) *sx.Pair {
	switch n := node.(type) {
	case *ast.BlockSlice:
		return t.getBlockList(n).Cons(sz.SymBlock)
	case *ast.InlineSlice:
		return t.getInlineList(*n).Cons(sz.SymInline)
	case *ast.ParaNode:
		return t.getInlineList(n.Inlines).Cons(sz.SymPara)
	case *ast.VerbatimNode:
		return sx.MakeList(
			mapGetS(mapVerbatimKindS, n.Kind),
			getAttributes(n.Attrs),
			sx.String(string(n.Content)),
		)
	case *ast.RegionNode:
		return t.getRegion(n)
	case *ast.HeadingNode:
		return t.getInlineList(n.Inlines).
			Cons(sx.String(n.Fragment)).
			Cons(sx.String(n.Slug)).
			Cons(getAttributes(n.Attrs)).
			Cons(sx.Int64(int64(n.Level))).
			Cons(sz.SymHeading)


	case *ast.HRuleNode:
		return sx.MakeList(sz.SymThematic, getAttributes(n.Attrs))
	case *ast.NestedListNode:
		return t.getNestedList(n)
	case *ast.DescriptionListNode:
		return t.getDescriptionList(n)
	case *ast.TableNode:
		return t.getTable(n)
	case *ast.TranscludeNode:
		return sx.MakeList(sz.SymTransclude, getAttributes(n.Attrs), getReference(n.Ref))
	case *ast.BLOBNode:
		return t.getBLOB(n)
	case *ast.TextNode:
		return sx.MakeList(sz.SymText, sx.String(n.Text))
	case *ast.SpaceNode:
		if t.inVerse {
			return sx.MakeList(sz.SymSpace, sx.String(n.Lexeme))
		}
		return sx.MakeList(sz.SymSpace)
	case *ast.BreakNode:
		if n.Hard {
			return sx.MakeList(sz.SymHard)
		}
		return sx.MakeList(sz.SymSoft)
	case *ast.LinkNode:
		return t.getLink(n)
	case *ast.EmbedRefNode:
		return t.getInlineList(n.Inlines).
			Cons(sx.String(n.Syntax)).
			Cons(getReference(n.Ref)).
			Cons(getAttributes(n.Attrs)).
			Cons(sz.SymEmbed)
	case *ast.EmbedBLOBNode:
		return t.getEmbedBLOB(n)
	case *ast.CiteNode:
		return t.getInlineList(n.Inlines).
			Cons(sx.String(n.Key)).
			Cons(getAttributes(n.Attrs)).
			Cons(sz.SymCite)
	case *ast.FootnoteNode:
		// (ENDNODE attrs InlineElement ...)
		return t.getInlineList(n.Inlines).Cons(getAttributes(n.Attrs)).Cons(sz.SymEndnote)
	case *ast.MarkNode:
		return t.getInlineList(n.Inlines).
			Cons(sx.String(n.Fragment)).
			Cons(sx.String(n.Slug)).
			Cons(sx.String(n.Mark)).
			Cons(sz.SymMark)
	case *ast.FormatNode:
		return t.getInlineList(n.Inlines).
			Cons(getAttributes(n.Attrs)).
			Cons(mapGetS(mapFormatKindS, n.Kind))
	case *ast.LiteralNode:
		return sx.MakeList(
			mapGetS(mapLiteralKindS, n.Kind),
			getAttributes(n.Attrs),
			sx.String(string(n.Content)),
		)
	}
	return sx.MakeList(sz.SymUnknown, sx.String(fmt.Sprintf("%T %v", node, node)))
}

var mapVerbatimKindS = map[ast.VerbatimKind]*sx.Symbol{
	ast.VerbatimZettel:  sz.SymVerbatimZettel,
	ast.VerbatimProg:    sz.SymVerbatimProg,
	ast.VerbatimEval:    sz.SymVerbatimEval,
	ast.VerbatimMath:    sz.SymVerbatimMath,
	ast.VerbatimComment: sz.SymVerbatimComment,
	ast.VerbatimHTML:    sz.SymVerbatimHTML,
}

var mapFormatKindS = map[ast.FormatKind]*sx.Symbol{
	ast.FormatEmph:   sz.SymFormatEmph,
	ast.FormatStrong: sz.SymFormatStrong,
	ast.FormatDelete: sz.SymFormatDelete,
	ast.FormatInsert: sz.SymFormatInsert,
	ast.FormatSuper:  sz.SymFormatSuper,
	ast.FormatSub:    sz.SymFormatSub,
	ast.FormatQuote:  sz.SymFormatQuote,
	ast.FormatMark:   sz.SymFormatMark,
	ast.FormatSpan:   sz.SymFormatSpan,
}

var mapLiteralKindS = map[ast.LiteralKind]*sx.Symbol{
	ast.LiteralZettel:  sz.SymLiteralZettel,
	ast.LiteralProg:    sz.SymLiteralProg,
	ast.LiteralInput:   sz.SymLiteralInput,
	ast.LiteralOutput:  sz.SymLiteralOutput,
	ast.LiteralComment: sz.SymLiteralComment,
	ast.LiteralHTML:    sz.SymLiteralHTML,
	ast.LiteralMath:    sz.SymLiteralMath,
}

var mapRegionKindS = map[ast.RegionKind]*sx.Symbol{
	ast.RegionSpan:  sz.SymRegionBlock,
	ast.RegionQuote: sz.SymRegionQuote,
	ast.RegionVerse: sz.SymRegionVerse,
}

func (t *Transformer) getRegion(rn *ast.RegionNode) *sx.Pair {
	saveInVerse := t.inVerse
	if rn.Kind == ast.RegionVerse {
		t.inVerse = true
	}
	symBlocks := t.getBlockList(&rn.Blocks)
	t.inVerse = saveInVerse
	return t.getInlineList(rn.Inlines).
		Cons(symBlocks).
		Cons(getAttributes(rn.Attrs)).

		Cons(mapGetS(mapRegionKindS, rn.Kind))
}

var mapNestedListKindS = map[ast.NestedListKind]*sx.Symbol{
	ast.NestedListOrdered:   sz.SymListOrdered,
	ast.NestedListUnordered: sz.SymListUnordered,
	ast.NestedListQuote:     sz.SymListQuote,
}

func (t *Transformer) getNestedList(ln *ast.NestedListNode) *sx.Pair {
	nlistObjs := make(sx.Vector, len(ln.Items)+1)
	nlistObjs[0] = mapGetS(mapNestedListKindS, ln.Kind)
	isCompact := isCompactList(ln.Items)
	for i, item := range ln.Items {
		if isCompact && len(item) > 0 {
			paragraph := t.GetSz(item[0])
			nlistObjs[i+1] = paragraph.Tail().Cons(sz.SymInline)
			continue
		}
		itemObjs := make(sx.Vector, len(item))
		for j, in := range item {
			itemObjs[j] = t.GetSz(in)
		}
		if isCompact {
			nlistObjs[i+1] = sx.MakeList(itemObjs...).Cons(sz.SymInline)
		} else {
			nlistObjs[i+1] = sx.MakeList(itemObjs...).Cons(sz.SymBlock)
		}
	}
	return sx.MakeList(nlistObjs...)
}
func isCompactList(itemSlice []ast.ItemSlice) bool {
	for _, items := range itemSlice {
		if len(items) > 1 {
			return false
		}
		if len(items) == 1 {
			if _, ok := items[0].(*ast.ParaNode); !ok {
				return false
			}
		}
	}
	return true
}

func (t *Transformer) getDescriptionList(dn *ast.DescriptionListNode) *sx.Pair {
	dlObjs := make(sx.Vector, 2*len(dn.Descriptions)+1)
	dlObjs[0] = sz.SymDescription
	for i, def := range dn.Descriptions {
		dlObjs[2*i+1] = t.getInlineList(def.Term)
		descObjs := make(sx.Vector, len(def.Descriptions))
		for j, b := range def.Descriptions {
			dVal := make(sx.Vector, len(b))
			for k, dn := range b {
				dVal[k] = t.GetSz(dn)
			}
			descObjs[j] = sx.MakeList(dVal...).Cons(sz.SymBlock)
		}
		dlObjs[2*i+2] = sx.MakeList(descObjs...).Cons(sz.SymBlock)
	}
	return sx.MakeList(dlObjs...)
}

func (t *Transformer) getTable(tn *ast.TableNode) *sx.Pair {
	tObjs := make(sx.Vector, len(tn.Rows)+2)
	tObjs[0] = sz.SymTable
	tObjs[1] = t.getHeader(tn.Header)
	for i, row := range tn.Rows {
		tObjs[i+2] = t.getRow(row)
	}
	return sx.MakeList(tObjs...)
}
func (t *Transformer) getHeader(header ast.TableRow) *sx.Pair {
	if len(header) == 0 {
		return nil
	}
	return t.getRow(header)
}
func (t *Transformer) getRow(row ast.TableRow) *sx.Pair {
	rObjs := make(sx.Vector, len(row))
	for i, cell := range row {
		rObjs[i] = t.getCell(cell)
	}
	return sx.MakeList(rObjs...)
}

var alignmentSymbolS = map[ast.Alignment]*sx.Symbol{
	ast.AlignDefault: sz.SymCell,
	ast.AlignLeft:    sz.SymCellLeft,
	ast.AlignCenter:  sz.SymCellCenter,
	ast.AlignRight:   sz.SymCellRight,
}

func (t *Transformer) getCell(cell *ast.TableCell) *sx.Pair {
	return t.getInlineList(cell.Inlines).Cons(mapGetS(alignmentSymbolS, cell.Align))
}

func (t *Transformer) getBLOB(bn *ast.BLOBNode) *sx.Pair {
	var lastObj sx.Object
	if bn.Syntax == meta.SyntaxSVG {
		lastObj = sx.String(string(bn.Blob))
	} else {
		lastObj = getBase64String(bn.Blob)
	}
	return sx.MakeList(
		sz.SymBLOB,
		t.getInlineList(bn.Description),
		sx.String(bn.Syntax),
		lastObj,
	)
}

var mapRefStateLink = map[ast.RefState]*sx.Symbol{
	ast.RefStateInvalid:  sz.SymLinkInvalid,
	ast.RefStateZettel:   sz.SymLinkZettel,
	ast.RefStateSelf:     sz.SymLinkSelf,
	ast.RefStateFound:    sz.SymLinkFound,
	ast.RefStateBroken:   sz.SymLinkBroken,
	ast.RefStateHosted:   sz.SymLinkHosted,
	ast.RefStateBased:    sz.SymLinkBased,
	ast.RefStateQuery:    sz.SymLinkQuery,
	ast.RefStateExternal: sz.SymLinkExternal,
}

func (t *Transformer) getLink(ln *ast.LinkNode) *sx.Pair {
	return t.getInlineList(ln.Inlines).
		Cons(sx.String(ln.Ref.Value)).
		Cons(getAttributes(ln.Attrs)).
		Cons(mapGetS(mapRefStateLink, ln.Ref.State))
}

func (t *Transformer) getEmbedBLOB(en *ast.EmbedBLOBNode) *sx.Pair {
	tail := t.getInlineList(en.Inlines)
	if en.Syntax == meta.SyntaxSVG {
		tail = tail.Cons(sx.String(string(en.Blob)))
	} else {
		tail = tail.Cons(getBase64String(en.Blob))
	}
	return tail.Cons(sx.String(en.Syntax)).Cons(getAttributes(en.Attrs)).Cons(sz.SymEmbedBLOB)
}

func (t *Transformer) getBlockList(bs *ast.BlockSlice) *sx.Pair {
	objs := make(sx.Vector, len(*bs))
	for i, n := range *bs {
		objs[i] = t.GetSz(n)
	}
	return sx.MakeList(objs...)
}
func (t *Transformer) getInlineList(is ast.InlineSlice) *sx.Pair {
	objs := make(sx.Vector, len(is))
	for i, n := range is {
		objs[i] = t.GetSz(n)
	}
	return sx.MakeList(objs...)
}

func getAttributes(a attrs.Attributes) sx.Object {
	if a.IsEmpty() {
		return sx.Nil()
	}
	keys := a.Keys()
	objs := make(sx.Vector, 0, len(keys))
	for _, k := range keys {
		objs = append(objs, sx.Cons(sx.String(k), sx.String(a[k])))
	}
	return sx.MakeList(objs...)
}

var mapRefStateS = map[ast.RefState]*sx.Symbol{
	ast.RefStateInvalid:  sz.SymRefStateInvalid,
	ast.RefStateZettel:   sz.SymRefStateZettel,
	ast.RefStateSelf:     sz.SymRefStateSelf,
	ast.RefStateFound:    sz.SymRefStateFound,
	ast.RefStateBroken:   sz.SymRefStateBroken,
	ast.RefStateHosted:   sz.SymRefStateHosted,
	ast.RefStateBased:    sz.SymRefStateBased,
	ast.RefStateQuery:    sz.SymRefStateQuery,
	ast.RefStateExternal: sz.SymRefStateExternal,
}

func getReference(ref *ast.Reference) *sx.Pair {
	return sx.MakeList(mapGetS(mapRefStateS, ref.State), sx.String(ref.Value))
}






var mapMetaTypeS = map[*meta.DescriptionType]*sx.Symbol{
	meta.TypeCredential:   sz.SymTypeCredential,
	meta.TypeEmpty:        sz.SymTypeEmpty,
	meta.TypeID:           sz.SymTypeID,
	meta.TypeIDSet:        sz.SymTypeIDSet,
	meta.TypeNumber:       sz.SymTypeNumber,
	meta.TypeString:       sz.SymTypeString,
	meta.TypeTagSet:       sz.SymTypeTagSet,
	meta.TypeTimestamp:    sz.SymTypeTimestamp,
	meta.TypeURL:          sz.SymTypeURL,
	meta.TypeWord:         sz.SymTypeWord,
	meta.TypeZettelmarkup: sz.SymTypeZettelmarkup,
}

func (t *Transformer) GetMeta(m *meta.Meta, evalMeta encoder.EvalMetaFunc) *sx.Pair {
	pairs := m.ComputedPairs()
	objs := make(sx.Vector, 0, len(pairs))
	for _, p := range pairs {
		key := p.Key
		ty := m.Type(key)
		symType := mapGetS(mapMetaTypeS, ty)
		var obj sx.Object
		if ty.IsSet {
			setList := meta.ListFromValue(p.Value)
			setObjs := make(sx.Vector, len(setList))
			for i, val := range setList {
				setObjs[i] = sx.String(val)
			}
			obj = sx.MakeList(setObjs...)
		} else if ty == meta.TypeZettelmarkup {
			is := evalMeta(p.Value)
			obj = t.getInlineList(is)
		} else {
			obj = sx.String(p.Value)
		}

		objs = append(objs, sx.Nil().Cons(obj).Cons(sx.MakeSymbol(key)).Cons(symType))
	}
	return sx.MakeList(objs...).Cons(sz.SymMeta)
}

func mapGetS[T comparable](m map[T]*sx.Symbol, k T) *sx.Symbol {
	if result, found := m[k]; found {
		return result
	}
	return sx.MakeSymbol(fmt.Sprintf("**%v:NOT-FOUND**", k))
}

func getBase64String(data []byte) sx.String {
	var sb strings.Builder
	encoder := base64.NewEncoder(base64.StdEncoding, &sb)
	_, err := encoder.Write(data)
	if err == nil {








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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package szenc

import (
	"encoding/base64"
	"fmt"
	"strings"

	"zettelstore.de/client.fossil/attrs"
	"zettelstore.de/client.fossil/sz"
	"zettelstore.de/sx.fossil"
	"zettelstore.de/z/ast"
	"zettelstore.de/z/encoder"
	"zettelstore.de/z/zettel/meta"
)

// NewTransformer returns a new transformer to create s-expressions from AST nodes.
func NewTransformer() *Transformer {
	sf := sx.MakeMappedFactory(1024)
	t := Transformer{sf: sf}
	t.zetSyms.InitializeZettelSymbols(sf)

	t.mapVerbatimKindS = map[ast.VerbatimKind]*sx.Symbol{
		ast.VerbatimZettel:  t.zetSyms.SymVerbatimZettel,
		ast.VerbatimProg:    t.zetSyms.SymVerbatimProg,
		ast.VerbatimEval:    t.zetSyms.SymVerbatimEval,
		ast.VerbatimMath:    t.zetSyms.SymVerbatimMath,
		ast.VerbatimComment: t.zetSyms.SymVerbatimComment,
		ast.VerbatimHTML:    t.zetSyms.SymVerbatimHTML,
	}

	t.mapRegionKindS = map[ast.RegionKind]*sx.Symbol{
		ast.RegionSpan:  t.zetSyms.SymRegionBlock,
		ast.RegionQuote: t.zetSyms.SymRegionQuote,
		ast.RegionVerse: t.zetSyms.SymRegionVerse,
	}
	t.mapNestedListKindS = map[ast.NestedListKind]*sx.Symbol{
		ast.NestedListOrdered:   t.zetSyms.SymListOrdered,
		ast.NestedListUnordered: t.zetSyms.SymListUnordered,
		ast.NestedListQuote:     t.zetSyms.SymListQuote,
	}
	t.alignmentSymbolS = map[ast.Alignment]*sx.Symbol{
		ast.AlignDefault: t.zetSyms.SymCell,
		ast.AlignLeft:    t.zetSyms.SymCellLeft,
		ast.AlignCenter:  t.zetSyms.SymCellCenter,
		ast.AlignRight:   t.zetSyms.SymCellRight,
	}
	t.mapRefStateLink = map[ast.RefState]*sx.Symbol{
		ast.RefStateInvalid:  t.zetSyms.SymLinkInvalid,
		ast.RefStateZettel:   t.zetSyms.SymLinkZettel,
		ast.RefStateSelf:     t.zetSyms.SymLinkSelf,
		ast.RefStateFound:    t.zetSyms.SymLinkFound,
		ast.RefStateBroken:   t.zetSyms.SymLinkBroken,
		ast.RefStateHosted:   t.zetSyms.SymLinkHosted,
		ast.RefStateBased:    t.zetSyms.SymLinkBased,
		ast.RefStateQuery:    t.zetSyms.SymLinkQuery,
		ast.RefStateExternal: t.zetSyms.SymLinkExternal,
	}
	t.mapFormatKindS = map[ast.FormatKind]*sx.Symbol{
		ast.FormatEmph:   t.zetSyms.SymFormatEmph,
		ast.FormatStrong: t.zetSyms.SymFormatStrong,
		ast.FormatDelete: t.zetSyms.SymFormatDelete,
		ast.FormatInsert: t.zetSyms.SymFormatInsert,
		ast.FormatSuper:  t.zetSyms.SymFormatSuper,
		ast.FormatSub:    t.zetSyms.SymFormatSub,
		ast.FormatQuote:  t.zetSyms.SymFormatQuote,
		ast.FormatMark:   t.zetSyms.SymFormatMark,
		ast.FormatSpan:   t.zetSyms.SymFormatSpan,
	}
	t.mapLiteralKindS = map[ast.LiteralKind]*sx.Symbol{
		ast.LiteralZettel:  t.zetSyms.SymLiteralZettel,
		ast.LiteralProg:    t.zetSyms.SymLiteralProg,
		ast.LiteralInput:   t.zetSyms.SymLiteralInput,
		ast.LiteralOutput:  t.zetSyms.SymLiteralOutput,
		ast.LiteralComment: t.zetSyms.SymLiteralComment,
		ast.LiteralHTML:    t.zetSyms.SymLiteralHTML,
		ast.LiteralMath:    t.zetSyms.SymLiteralMath,
	}
	t.mapRefStateS = map[ast.RefState]*sx.Symbol{
		ast.RefStateInvalid:  t.zetSyms.SymRefStateInvalid,
		ast.RefStateZettel:   t.zetSyms.SymRefStateZettel,
		ast.RefStateSelf:     t.zetSyms.SymRefStateSelf,
		ast.RefStateFound:    t.zetSyms.SymRefStateFound,
		ast.RefStateBroken:   t.zetSyms.SymRefStateBroken,
		ast.RefStateHosted:   t.zetSyms.SymRefStateHosted,
		ast.RefStateBased:    t.zetSyms.SymRefStateBased,
		ast.RefStateQuery:    t.zetSyms.SymRefStateQuery,
		ast.RefStateExternal: t.zetSyms.SymRefStateExternal,
	}
	t.mapMetaTypeS = map[*meta.DescriptionType]*sx.Symbol{
		meta.TypeCredential:   t.zetSyms.SymTypeCredential,
		meta.TypeEmpty:        t.zetSyms.SymTypeEmpty,
		meta.TypeID:           t.zetSyms.SymTypeID,
		meta.TypeIDSet:        t.zetSyms.SymTypeIDSet,
		meta.TypeNumber:       t.zetSyms.SymTypeNumber,
		meta.TypeString:       t.zetSyms.SymTypeString,
		meta.TypeTagSet:       t.zetSyms.SymTypeTagSet,
		meta.TypeTimestamp:    t.zetSyms.SymTypeTimestamp,
		meta.TypeURL:          t.zetSyms.SymTypeURL,
		meta.TypeWord:         t.zetSyms.SymTypeWord,
		meta.TypeWordSet:      t.zetSyms.SymTypeWordSet,
		meta.TypeZettelmarkup: t.zetSyms.SymTypeZettelmarkup,
	}
	return &t
}

type Transformer struct {
	sf                 sx.SymbolFactory
	zetSyms            sz.ZettelSymbols
	mapVerbatimKindS   map[ast.VerbatimKind]*sx.Symbol
	mapRegionKindS     map[ast.RegionKind]*sx.Symbol
	mapNestedListKindS map[ast.NestedListKind]*sx.Symbol
	alignmentSymbolS   map[ast.Alignment]*sx.Symbol
	mapRefStateLink    map[ast.RefState]*sx.Symbol
	mapFormatKindS     map[ast.FormatKind]*sx.Symbol
	mapLiteralKindS    map[ast.LiteralKind]*sx.Symbol
	mapRefStateS       map[ast.RefState]*sx.Symbol
	mapMetaTypeS       map[*meta.DescriptionType]*sx.Symbol
	inVerse            bool
}

func (t *Transformer) GetSz(node ast.Node) *sx.Pair {
	switch n := node.(type) {
	case *ast.BlockSlice:
		return t.getBlockSlice(n)
	case *ast.InlineSlice:
		return t.getInlineSlice(*n)
	case *ast.ParaNode:
		return t.getInlineSlice(n.Inlines).Tail().Cons(t.zetSyms.SymPara)
	case *ast.VerbatimNode:
		return sx.MakeList(
			mapGetS(t, t.mapVerbatimKindS, n.Kind),
			t.getAttributes(n.Attrs),
			sx.String(string(n.Content)),
		)
	case *ast.RegionNode:
		return t.getRegion(n)
	case *ast.HeadingNode:
		return sx.MakeList(
			t.zetSyms.SymHeading,
			sx.Int64(int64(n.Level)),
			t.getAttributes(n.Attrs),
			sx.String(n.Slug),
			sx.String(n.Fragment),
			t.getInlineSlice(n.Inlines),
		)
	case *ast.HRuleNode:
		return sx.MakeList(t.zetSyms.SymThematic, t.getAttributes(n.Attrs))
	case *ast.NestedListNode:
		return t.getNestedList(n)
	case *ast.DescriptionListNode:
		return t.getDescriptionList(n)
	case *ast.TableNode:
		return t.getTable(n)
	case *ast.TranscludeNode:
		return sx.MakeList(t.zetSyms.SymTransclude, t.getAttributes(n.Attrs), t.getReference(n.Ref))
	case *ast.BLOBNode:
		return t.getBLOB(n)
	case *ast.TextNode:
		return sx.MakeList(t.zetSyms.SymText, sx.String(n.Text))
	case *ast.SpaceNode:
		if t.inVerse {
			return sx.MakeList(t.zetSyms.SymSpace, sx.String(n.Lexeme))
		}
		return sx.MakeList(t.zetSyms.SymSpace)
	case *ast.BreakNode:
		if n.Hard {
			return sx.MakeList(t.zetSyms.SymHard)
		}
		return sx.MakeList(t.zetSyms.SymSoft)
	case *ast.LinkNode:
		return t.getLink(n)
	case *ast.EmbedRefNode:
		return t.getInlineSlice(n.Inlines).Tail().
			Cons(sx.String(n.Syntax)).
			Cons(t.getReference(n.Ref)).
			Cons(t.getAttributes(n.Attrs)).
			Cons(t.zetSyms.SymEmbed)
	case *ast.EmbedBLOBNode:
		return t.getEmbedBLOB(n)
	case *ast.CiteNode:
		return t.getInlineSlice(n.Inlines).Tail().
			Cons(sx.String(n.Key)).
			Cons(t.getAttributes(n.Attrs)).
			Cons(t.zetSyms.SymCite)
	case *ast.FootnoteNode:
		text := sx.Nil().Cons(sx.Nil().Cons(t.getInlineSlice(n.Inlines)).Cons(t.zetSyms.SymQuote))
		return text.Cons(t.getAttributes(n.Attrs)).Cons(t.zetSyms.SymEndnote)
	case *ast.MarkNode:
		return t.getInlineSlice(n.Inlines).Tail().
			Cons(sx.String(n.Fragment)).
			Cons(sx.String(n.Slug)).
			Cons(sx.String(n.Mark)).
			Cons(t.zetSyms.SymMark)
	case *ast.FormatNode:
		return t.getInlineSlice(n.Inlines).Tail().
			Cons(t.getAttributes(n.Attrs)).
			Cons(mapGetS(t, t.mapFormatKindS, n.Kind))
	case *ast.LiteralNode:
		return sx.MakeList(
			mapGetS(t, t.mapLiteralKindS, n.Kind),
			t.getAttributes(n.Attrs),
			sx.String(string(n.Content)),
		)
	}
	return sx.MakeList(t.zetSyms.SymUnknown, sx.String(fmt.Sprintf("%T %v", node, node)))





































}

func (t *Transformer) getRegion(rn *ast.RegionNode) *sx.Pair {
	saveInVerse := t.inVerse
	if rn.Kind == ast.RegionVerse {
		t.inVerse = true
	}
	symBlocks := t.GetSz(&rn.Blocks)
	t.inVerse = saveInVerse
	return sx.MakeList(
		mapGetS(t, t.mapRegionKindS, rn.Kind),
		t.getAttributes(rn.Attrs),
		symBlocks,
		t.GetSz(&rn.Inlines),

	)




}

func (t *Transformer) getNestedList(ln *ast.NestedListNode) *sx.Pair {
	nlistObjs := make([]sx.Object, len(ln.Items)+1)
	nlistObjs[0] = mapGetS(t, t.mapNestedListKindS, ln.Kind)
	isCompact := isCompactList(ln.Items)
	for i, item := range ln.Items {
		if isCompact && len(item) > 0 {
			paragraph := t.GetSz(item[0])
			nlistObjs[i+1] = paragraph.Tail().Cons(t.zetSyms.SymInline)
			continue
		}
		itemObjs := make([]sx.Object, len(item))
		for j, in := range item {
			itemObjs[j] = t.GetSz(in)
		}
		if isCompact {
			nlistObjs[i+1] = sx.MakeList(itemObjs...).Cons(t.zetSyms.SymInline)
		} else {
			nlistObjs[i+1] = sx.MakeList(itemObjs...).Cons(t.zetSyms.SymBlock)
		}
	}
	return sx.MakeList(nlistObjs...)
}
func isCompactList(itemSlice []ast.ItemSlice) bool {
	for _, items := range itemSlice {
		if len(items) > 1 {
			return false
		}
		if len(items) == 1 {
			if _, ok := items[0].(*ast.ParaNode); !ok {
				return false
			}
		}
	}
	return true
}

func (t *Transformer) getDescriptionList(dn *ast.DescriptionListNode) *sx.Pair {
	dlObjs := make([]sx.Object, 2*len(dn.Descriptions)+1)
	dlObjs[0] = t.zetSyms.SymDescription
	for i, def := range dn.Descriptions {
		dlObjs[2*i+1] = t.getInlineSlice(def.Term)
		descObjs := make([]sx.Object, len(def.Descriptions))
		for j, b := range def.Descriptions {
			dVal := make([]sx.Object, len(b))
			for k, dn := range b {
				dVal[k] = t.GetSz(dn)
			}
			descObjs[j] = sx.MakeList(dVal...).Cons(t.zetSyms.SymBlock)
		}
		dlObjs[2*i+2] = sx.MakeList(descObjs...).Cons(t.zetSyms.SymBlock)
	}
	return sx.MakeList(dlObjs...)
}

func (t *Transformer) getTable(tn *ast.TableNode) *sx.Pair {
	tObjs := make([]sx.Object, len(tn.Rows)+2)
	tObjs[0] = t.zetSyms.SymTable
	tObjs[1] = t.getHeader(tn.Header)
	for i, row := range tn.Rows {
		tObjs[i+2] = t.getRow(row)
	}
	return sx.MakeList(tObjs...)
}
func (t *Transformer) getHeader(header ast.TableRow) *sx.Pair {
	if len(header) == 0 {
		return nil
	}
	return t.getRow(header)
}
func (t *Transformer) getRow(row ast.TableRow) *sx.Pair {
	rObjs := make([]sx.Object, len(row))
	for i, cell := range row {
		rObjs[i] = t.getCell(cell)
	}
	return sx.MakeList(rObjs...).Cons(t.zetSyms.SymList)







}

func (t *Transformer) getCell(cell *ast.TableCell) *sx.Pair {
	return t.getInlineSlice(cell.Inlines).Tail().Cons(mapGetS(t, t.alignmentSymbolS, cell.Align))
}

func (t *Transformer) getBLOB(bn *ast.BLOBNode) *sx.Pair {
	var lastObj sx.Object
	if bn.Syntax == meta.SyntaxSVG {
		lastObj = sx.String(string(bn.Blob))
	} else {
		lastObj = getBase64String(bn.Blob)
	}
	return sx.MakeList(
		t.zetSyms.SymBLOB,
		t.getInlineSlice(bn.Description),
		sx.String(bn.Syntax),
		lastObj,
	)
}













func (t *Transformer) getLink(ln *ast.LinkNode) *sx.Pair {
	return t.getInlineSlice(ln.Inlines).Tail().
		Cons(sx.String(ln.Ref.Value)).
		Cons(t.getAttributes(ln.Attrs)).
		Cons(mapGetS(t, t.mapRefStateLink, ln.Ref.State))
}

func (t *Transformer) getEmbedBLOB(en *ast.EmbedBLOBNode) *sx.Pair {
	tail := t.getInlineSlice(en.Inlines).Tail()
	if en.Syntax == meta.SyntaxSVG {
		tail = tail.Cons(sx.String(string(en.Blob)))
	} else {
		tail = tail.Cons(getBase64String(en.Blob))
	}
	return tail.Cons(sx.String(en.Syntax)).Cons(t.getAttributes(en.Attrs)).Cons(t.zetSyms.SymEmbedBLOB)
}

func (t *Transformer) getBlockSlice(bs *ast.BlockSlice) *sx.Pair {
	objs := make([]sx.Object, len(*bs))
	for i, n := range *bs {
		objs[i] = t.GetSz(n)
	}
	return sx.MakeList(objs...).Cons(t.zetSyms.SymBlock)
}
func (t *Transformer) getInlineSlice(is ast.InlineSlice) *sx.Pair {
	objs := make([]sx.Object, len(is))
	for i, n := range is {
		objs[i] = t.GetSz(n)
	}
	return sx.MakeList(objs...).Cons(t.zetSyms.SymInline)
}

func (t *Transformer) getAttributes(a attrs.Attributes) sx.Object {
	if a.IsEmpty() {
		return sx.Nil()
	}
	keys := a.Keys()
	objs := make([]sx.Object, 0, len(keys))
	for _, k := range keys {
		objs = append(objs, sx.Cons(sx.String(k), sx.String(a[k])))
	}
	return sx.Nil().Cons(sx.MakeList(objs...)).Cons(t.zetSyms.SymQuote)
}













func (t *Transformer) getReference(ref *ast.Reference) *sx.Pair {
	return sx.MakeList(

		t.zetSyms.SymQuote,
		sx.MakeList(
			mapGetS(t, t.mapRefStateS, ref.State),
			sx.String(ref.Value),
		),
	)












}

func (t *Transformer) GetMeta(m *meta.Meta, evalMeta encoder.EvalMetaFunc) *sx.Pair {
	pairs := m.ComputedPairs()
	objs := make([]sx.Object, 0, len(pairs))
	for _, p := range pairs {
		key := p.Key
		ty := m.Type(key)
		symType := mapGetS(t, t.mapMetaTypeS, ty)
		var obj sx.Object
		if ty.IsSet {
			setList := meta.ListFromValue(p.Value)
			setObjs := make([]sx.Object, len(setList))
			for i, val := range setList {
				setObjs[i] = sx.String(val)
			}
			obj = sx.MakeList(setObjs...).Cons(t.zetSyms.SymList)
		} else if ty == meta.TypeZettelmarkup {
			is := evalMeta(p.Value)
			obj = t.GetSz(&is)
		} else {
			obj = sx.String(p.Value)
		}
		symKey := sx.MakeList(t.zetSyms.SymQuote, t.sf.MustMake(key))
		objs = append(objs, sx.Nil().Cons(obj).Cons(symKey).Cons(symType))
	}
	return sx.MakeList(objs...).Cons(t.zetSyms.SymMeta)
}

func mapGetS[T comparable](t *Transformer, m map[T]*sx.Symbol, k T) *sx.Symbol {
	if result, found := m[k]; found {
		return result
	}
	return t.sf.MustMake(fmt.Sprintf("**%v:NOT-FOUND**", k))
}

func getBase64String(data []byte) sx.String {
	var sb strings.Builder
	encoder := base64.NewEncoder(base64.StdEncoding, &sb)
	_, err := encoder.Write(data)
	if err == nil {

Changes to encoder/textenc/textenc.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package textenc encodes the abstract syntax tree into its text.
package textenc

import (
	"io"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package textenc encodes the abstract syntax tree into its text.
package textenc

import (
	"io"

Changes to encoder/write.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package encoder

import (
	"encoding/base64"
	"io"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package encoder

import (
	"encoding/base64"
	"io"

Changes to encoder/zmkenc/zmkenc.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package zmkenc encodes the abstract syntax tree back into Zettelmarkup.
package zmkenc

import (
	"fmt"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package zmkenc encodes the abstract syntax tree back into Zettelmarkup.
package zmkenc

import (
	"fmt"
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			last = i + 1
			continue
		}
		if i < len(tn.Text)-1 {
			s := tn.Text[i : i+2]
			if escapeSeqs.Has(s) {
				v.b.WriteString(tn.Text[last:i])
				for j := range len(s) {
					v.b.WriteBytes('\\', s[j])
				}
				i++
				last = i + 1
				continue
			}
		}







|







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			last = i + 1
			continue
		}
		if i < len(tn.Text)-1 {
			s := tn.Text[i : i+2]
			if escapeSeqs.Has(s) {
				v.b.WriteString(tn.Text[last:i])
				for j := 0; j < len(s); j++ {
					v.b.WriteBytes('\\', s[j])
				}
				i++
				last = i + 1
				continue
			}
		}
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		}
	}
	v.b.WriteByte('}')
}

func (v *visitor) writeEscaped(s string, toEscape byte) {
	last := 0
	for i := range len(s) {
		if b := s[i]; b == toEscape || b == '\\' {
			v.b.WriteString(s[last:i])
			v.b.WriteBytes('\\', b)
			last = i + 1
		}
	}
	v.b.WriteString(s[last:])
}

func syntaxToHTML(a attrs.Attributes) attrs.Attributes {
	return a.Clone().Set("", meta.SyntaxHTML).Remove(api.KeySyntax)
}







|












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		}
	}
	v.b.WriteByte('}')
}

func (v *visitor) writeEscaped(s string, toEscape byte) {
	last := 0
	for i := 0; i < len(s); i++ {
		if b := s[i]; b == toEscape || b == '\\' {
			v.b.WriteString(s[last:i])
			v.b.WriteBytes('\\', b)
			last = i + 1
		}
	}
	v.b.WriteString(s[last:])
}

func syntaxToHTML(a attrs.Attributes) attrs.Attributes {
	return a.Clone().Set("", meta.SyntaxHTML).Remove(api.KeySyntax)
}

Changes to encoding/atom/atom.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

// Package atom provides an Atom encoding.
package atom

import (
	"bytes"








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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package atom provides an Atom encoding.
package atom

import (
	"bytes"
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	entryUpdated := ""
	if val, found := m.Get(api.KeyPublished); found {
		if published, err := time.ParseInLocation(id.TimestampLayout, val, time.Local); err == nil {
			entryUpdated = published.UTC().Format(time.RFC3339)
		}
	}

	link := c.NewURLBuilderAbs().SetZid(m.Zid.ZettelID()).String()

	buf.WriteString("  <entry>\n")
	xml.WriteTag(buf, "    ", "title", encoding.TitleAsText(m))
	xml.WriteTag(buf, "    ", "id", link)
	buf.WriteString(`    <link rel="self" href="`)
	strfun.XMLEscape(buf, link)
	buf.WriteString(`"/>` + "\n")







|







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	entryUpdated := ""
	if val, found := m.Get(api.KeyPublished); found {
		if published, err := time.ParseInLocation(id.TimestampLayout, val, time.Local); err == nil {
			entryUpdated = published.UTC().Format(time.RFC3339)
		}
	}

	link := c.NewURLBuilderAbs().SetZid(api.ZettelID(m.Zid.String())).String()

	buf.WriteString("  <entry>\n")
	xml.WriteTag(buf, "    ", "title", encoding.TitleAsText(m))
	xml.WriteTag(buf, "    ", "id", link)
	buf.WriteString(`    <link rel="self" href="`)
	strfun.XMLEscape(buf, link)
	buf.WriteString(`"/>` + "\n")

Changes to encoding/encoding.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

// Package encoding provides helper functions for encodings.
package encoding

import (
	"time"








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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package encoding provides helper functions for encodings.
package encoding

import (
	"time"

Changes to encoding/rss/rss.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

// Package rss provides a RSS encoding.
package rss

import (
	"bytes"








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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package rss provides a RSS encoding.
package rss

import (
	"bytes"
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	itemPublished := ""
	if val, found := m.Get(api.KeyPublished); found {
		if published, err := time.ParseInLocation(id.TimestampLayout, val, time.Local); err == nil {
			itemPublished = published.UTC().Format(time.RFC1123Z)
		}
	}

	link := c.NewURLBuilderAbs().SetZid(m.Zid.ZettelID()).String()

	buf.WriteString("  <item>\n")
	xml.WriteTag(buf, "    ", "title", encoding.TitleAsText(m))
	xml.WriteTag(buf, "    ", "link", link)
	xml.WriteTag(buf, "    ", "guid", link)
	if itemPublished != "" {
		xml.WriteTag(buf, "    ", "pubDate", itemPublished)







|







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	itemPublished := ""
	if val, found := m.Get(api.KeyPublished); found {
		if published, err := time.ParseInLocation(id.TimestampLayout, val, time.Local); err == nil {
			itemPublished = published.UTC().Format(time.RFC1123Z)
		}
	}

	link := c.NewURLBuilderAbs().SetZid(api.ZettelID(m.Zid.String())).String()

	buf.WriteString("  <item>\n")
	xml.WriteTag(buf, "    ", "title", encoding.TitleAsText(m))
	xml.WriteTag(buf, "    ", "link", link)
	xml.WriteTag(buf, "    ", "guid", link)
	if itemPublished != "" {
		xml.WriteTag(buf, "    ", "pubDate", itemPublished)

Changes to encoding/xml/xml.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

// Package xml provides helper for a XML-based encoding.
package xml

import (
	"bytes"








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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package xml provides helper for a XML-based encoding.
package xml

import (
	"bytes"

Changes to evaluator/evaluator.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

// Package evaluator interprets and evaluates the AST.
package evaluator

import (
	"bytes"
	"context"
	"errors"
	"fmt"
	"path"
	"strconv"
	"strings"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/attrs"
	"zettelstore.de/client.fossil/input"
	"zettelstore.de/sx.fossil/sxbuiltins"
	"zettelstore.de/sx.fossil/sxreader"
	"zettelstore.de/z/ast"
	"zettelstore.de/z/box"
	"zettelstore.de/z/config"

	"zettelstore.de/z/parser"
	"zettelstore.de/z/parser/cleaner"
	"zettelstore.de/z/parser/draw"
	"zettelstore.de/z/query"
	"zettelstore.de/z/zettel"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

// Port contains all methods to retrieve zettel (or part of it) to evaluate a zettel.
type Port interface {
	GetZettel(context.Context, id.Zid) (zettel.Zettel, error)
	QueryMeta(ctx context.Context, q *query.Query) ([]*meta.Meta, error)
}

// EvaluateZettel evaluates the given zettel in the given context, with the
// given ports, and the given environment.
func EvaluateZettel(ctx context.Context, port Port, rtConfig config.Config, zn *ast.ZettelNode) {
	switch zn.Syntax {
	case meta.SyntaxNone:
		// AST is empty, evaluate to a description list of metadata.
		zn.Ast = evaluateMetadata(zn.Meta)
	case meta.SyntaxSxn:
		zn.Ast = evaluateSxn(zn.Ast)
	default:
		EvaluateBlock(ctx, port, rtConfig, &zn.Ast)
	}
}

func evaluateSxn(bs ast.BlockSlice) ast.BlockSlice {
	// Check for structure made in parser/plain/plain.go:parseSxnBlocks
	if len(bs) == 1 {
		// If len(bs) > 1 --> an error was found during parsing
		if vn, isVerbatim := bs[0].(*ast.VerbatimNode); isVerbatim && vn.Kind == ast.VerbatimProg {
			if classAttr, hasClass := vn.Attrs.Get(""); hasClass && classAttr == meta.SyntaxSxn {
				rd := sxreader.MakeReader(bytes.NewReader(vn.Content))
				if objs, err := rd.ReadAll(); err == nil {
					result := make(ast.BlockSlice, len(objs))
					for i, obj := range objs {
						var buf bytes.Buffer
						sxbuiltins.Print(&buf, obj)
						result[i] = &ast.VerbatimNode{
							Kind:    ast.VerbatimProg,
							Attrs:   attrs.Attributes{"": classAttr},
							Content: buf.Bytes(),
						}
					}
					return result
				}
			}
		}
	}
	return bs

}

// EvaluateBlock evaluates the given block list in the given context, with
// the given ports, and the given environment.
func EvaluateBlock(ctx context.Context, port Port, rtConfig config.Config, bns *ast.BlockSlice) {
	evaluateNode(ctx, port, rtConfig, bns)
	cleaner.CleanBlockSlice(bns, true)








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<






<









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<



>


















<
|


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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package evaluator interprets and evaluates the AST.
package evaluator

import (

	"context"
	"errors"
	"fmt"
	"path"
	"strconv"
	"strings"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/attrs"



	"zettelstore.de/z/ast"
	"zettelstore.de/z/box"
	"zettelstore.de/z/config"
	"zettelstore.de/z/input"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/parser/cleaner"
	"zettelstore.de/z/parser/draw"
	"zettelstore.de/z/query"
	"zettelstore.de/z/zettel"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

// Port contains all methods to retrieve zettel (or part of it) to evaluate a zettel.
type Port interface {
	GetZettel(context.Context, id.Zid) (zettel.Zettel, error)
	QueryMeta(ctx context.Context, q *query.Query) ([]*meta.Meta, error)
}

// EvaluateZettel evaluates the given zettel in the given context, with the
// given ports, and the given environment.
func EvaluateZettel(ctx context.Context, port Port, rtConfig config.Config, zn *ast.ZettelNode) {

	if zn.Syntax == meta.SyntaxNone {
		// AST is empty, evaluate to a description list of metadata.
		zn.Ast = evaluateMetadata(zn.Meta)

























		return
	}




	EvaluateBlock(ctx, port, rtConfig, &zn.Ast)
}

// EvaluateBlock evaluates the given block list in the given context, with
// the given ports, and the given environment.
func EvaluateBlock(ctx context.Context, port Port, rtConfig config.Config, bns *ast.BlockSlice) {
	evaluateNode(ctx, port, rtConfig, bns)
	cleaner.CleanBlockSlice(bns, true)
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	ml, err := e.port.QueryMeta(e.ctx, q)
	if err != nil {
		if errors.Is(err, &box.ErrNotAllowed{}) {
			return nil
		}
		return makeBlockNode(createInlineErrorText(nil, "Unable", "to", "search", "zettel"))
	}
	result, _ := QueryAction(e.ctx, q, ml, e.rtConfig)
	if result != nil {
		ast.Walk(e, result)
	}
	return result
}

func (e *evaluator) checkMaxTransclusions(ref *ast.Reference) ast.InlineNode {







|







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	ml, err := e.port.QueryMeta(e.ctx, q)
	if err != nil {
		if errors.Is(err, &box.ErrNotAllowed{}) {
			return nil
		}
		return makeBlockNode(createInlineErrorText(nil, "Unable", "to", "search", "zettel"))
	}
	result := QueryAction(e.ctx, q, ml, e.rtConfig)
	if result != nil {
		ast.Walk(e, result)
	}
	return result
}

func (e *evaluator) checkMaxTransclusions(ref *ast.Reference) ast.InlineNode {
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		if errors.Is(err, &box.ErrNotAllowed{}) {
			return nil
		}
		e.transcludeCount++
		return createInlineErrorImage(en)
	}

	if syntax := zettel.Meta.GetDefault(api.KeySyntax, meta.DefaultSyntax); parser.IsImageFormat(syntax) {
		e.updateImageRefNode(en, zettel.Meta, syntax)
		return en
	} else if !parser.IsASTParser(syntax) {
		// Not embeddable.
		e.transcludeCount++
		return createInlineErrorText(ref, "Not", "embeddable (syntax="+syntax+")")
	}







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		if errors.Is(err, &box.ErrNotAllowed{}) {
			return nil
		}
		e.transcludeCount++
		return createInlineErrorImage(en)
	}

	if syntax := zettel.Meta.GetDefault(api.KeySyntax, ""); parser.IsImageFormat(syntax) {
		e.updateImageRefNode(en, zettel.Meta, syntax)
		return en
	} else if !parser.IsASTParser(syntax) {
		// Not embeddable.
		e.transcludeCount++
		return createInlineErrorText(ref, "Not", "embeddable (syntax="+syntax+")")
	}
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func (e *evaluator) evaluateEmbeddedInline(content []byte, syntax string) ast.InlineSlice {
	is := parser.ParseInlines(input.NewInput(content), syntax)
	ast.Walk(e, &is)
	return is
}

func (e *evaluator) evaluateEmbeddedZettel(zettel zettel.Zettel) *ast.ZettelNode {
	zn := parser.ParseZettel(e.ctx, zettel, zettel.Meta.GetDefault(api.KeySyntax, meta.DefaultSyntax), e.rtConfig)
	ast.Walk(e, &zn.Ast)
	return zn
}

func findInlineSlice(bs *ast.BlockSlice, fragment string) ast.InlineSlice {
	if fragment == "" {
		return firstInlinesToEmbed(*bs)







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func (e *evaluator) evaluateEmbeddedInline(content []byte, syntax string) ast.InlineSlice {
	is := parser.ParseInlines(input.NewInput(content), syntax)
	ast.Walk(e, &is)
	return is
}

func (e *evaluator) evaluateEmbeddedZettel(zettel zettel.Zettel) *ast.ZettelNode {
	zn := parser.ParseZettel(e.ctx, zettel, zettel.Meta.GetDefault(api.KeySyntax, ""), e.rtConfig)
	ast.Walk(e, &zn.Ast)
	return zn
}

func findInlineSlice(bs *ast.BlockSlice, fragment string) ast.InlineSlice {
	if fragment == "" {
		return firstInlinesToEmbed(*bs)

Changes to evaluator/list.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

package evaluator

import (
	"bytes"
	"context"








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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package evaluator

import (
	"bytes"
	"context"
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	"zettelstore.de/z/encoding/rss"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/query"
	"zettelstore.de/z/zettel/meta"
)

// QueryAction transforms a list of metadata according to query actions into a AST nested list.
func QueryAction(ctx context.Context, q *query.Query, ml []*meta.Meta, rtConfig config.Config) (ast.BlockNode, int) {
	ap := actionPara{
		ctx:   ctx,
		q:     q,
		ml:    ml,
		kind:  ast.NestedListUnordered,
		min:   -1,
		max:   -1,
		title: rtConfig.GetSiteName(),
	}
	actions := q.Actions()
	if len(actions) == 0 {
		return ap.createBlockNodeMeta("")
	}

	acts := make([]string, 0, len(actions))
	for i, act := range actions {
		if strings.HasPrefix(act, api.NumberedAction[0:1]) {
			ap.kind = ast.NestedListOrdered
			continue
		}
		if strings.HasPrefix(act, api.MinAction) {
			if num, err := strconv.Atoi(act[3:]); err == nil && num > 0 {
				ap.min = num
				continue
			}
		}
		if strings.HasPrefix(act, api.MaxAction) {
			if num, err := strconv.Atoi(act[3:]); err == nil && num > 0 {
				ap.max = num
				continue
			}
		}
		if act == api.TitleAction && i+1 < len(actions) {
			ap.title = strings.Join(actions[i+1:], " ")
			break
		}
		if act == api.ReIndexAction {
			continue
		}
		acts = append(acts, act)
	}
	var firstUnknowAct string
	for _, act := range acts {
		switch act {
		case api.AtomAction:
			return ap.createBlockNodeAtom(rtConfig)
		case api.RSSAction:
			return ap.createBlockNodeRSS(rtConfig)
		case api.KeysAction:
			return ap.createBlockNodeMetaKeys()
		}
		key := strings.ToLower(act)
		switch meta.Type(key) {
		case meta.TypeWord:
			return ap.createBlockNodeWord(key)
		case meta.TypeTagSet:
			return ap.createBlockNodeTagSet(key)
		}
		if firstUnknowAct == "" {
			firstUnknowAct = act
		}
	}
	bn, numItems := ap.createBlockNodeMeta(strings.ToLower(firstUnknowAct))
	if bn != nil && numItems == 0 && firstUnknowAct == strings.ToUpper(firstUnknowAct) {
		bn, numItems = ap.createBlockNodeMeta("")
	}
	return bn, numItems
}

type actionPara struct {
	ctx   context.Context
	q     *query.Query
	ml    []*meta.Meta
	kind  ast.NestedListKind
	min   int
	max   int
	title string
}

func (ap *actionPara) createBlockNodeWord(key string) (ast.BlockNode, int) {
	var buf bytes.Buffer
	ccs, bufLen := ap.prepareCatAction(key, &buf)
	if len(ccs) == 0 {
		return nil, 0
	}
	items := make([]ast.ItemSlice, 0, len(ccs))
	ccs.SortByName()
	for _, cat := range ccs {
		buf.WriteString(cat.Name)
		items = append(items, ast.ItemSlice{ast.CreateParaNode(&ast.LinkNode{
			Attrs:   nil,
			Ref:     ast.ParseReference(buf.String()),
			Inlines: ast.InlineSlice{&ast.TextNode{Text: cat.Name}},
		})})
		buf.Truncate(bufLen)
	}
	return &ast.NestedListNode{
		Kind:  ap.kind,
		Items: items,
		Attrs: nil,
	}, len(items)
}


func (ap *actionPara) createBlockNodeTagSet(key string) (ast.BlockNode, int) {
	var buf bytes.Buffer
	ccs, bufLen := ap.prepareCatAction(key, &buf)
	if len(ccs) == 0 {
		return nil, 0
	}
	ccs.SortByCount()
	ccs = ap.limitTags(ccs)
	countMap := ap.calcFontSizes(ccs)

	para := make(ast.InlineSlice, 0, len(ccs))
	ccs.SortByName()







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	"zettelstore.de/z/encoding/rss"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/query"
	"zettelstore.de/z/zettel/meta"
)

// QueryAction transforms a list of metadata according to query actions into a AST nested list.
func QueryAction(ctx context.Context, q *query.Query, ml []*meta.Meta, rtConfig config.Config) ast.BlockNode {
	ap := actionPara{
		ctx:   ctx,
		q:     q,
		ml:    ml,
		kind:  ast.NestedListUnordered,
		min:   -1,
		max:   -1,
		title: rtConfig.GetSiteName(),
	}
	actions := q.Actions()
	if len(actions) == 0 {
		return ap.createBlockNodeMeta("")
	}

	acts := make([]string, 0, len(actions))
	for i, act := range actions {
		if strings.HasPrefix(act, "N") {
			ap.kind = ast.NestedListOrdered
			continue
		}
		if strings.HasPrefix(act, "MIN") {
			if num, err := strconv.Atoi(act[3:]); err == nil && num > 0 {
				ap.min = num
				continue
			}
		}
		if strings.HasPrefix(act, "MAX") {
			if num, err := strconv.Atoi(act[3:]); err == nil && num > 0 {
				ap.max = num
				continue
			}
		}
		if act == "TITLE" && i+1 < len(actions) {
			ap.title = strings.Join(actions[i+1:], " ")
			break
		}
		if act == "REINDEX" {
			continue
		}
		acts = append(acts, act)
	}
	var firstUnknownKey string
	for _, act := range acts {
		switch act {
		case "ATOM":
			return ap.createBlockNodeAtom(rtConfig)
		case "RSS":
			return ap.createBlockNodeRSS(rtConfig)
		case "KEYS":
			return ap.createBlockNodeMetaKeys()
		}
		key := strings.ToLower(act)
		switch meta.Type(key) {
		case meta.TypeWord:
			return ap.createBlockNodeWord(key)
		case meta.TypeTagSet:
			return ap.createBlockNodeTagSet(key)
		}
		if firstUnknownKey == "" {
			firstUnknownKey = key
		}
	}


	return ap.createBlockNodeMeta(firstUnknownKey)


}

type actionPara struct {
	ctx   context.Context
	q     *query.Query
	ml    []*meta.Meta
	kind  ast.NestedListKind
	min   int
	max   int
	title string
}

func (ap *actionPara) createBlockNodeWord(key string) ast.BlockNode {
	var buf bytes.Buffer
	ccs, bufLen := ap.prepareCatAction(key, &buf)
	if len(ccs) == 0 {
		return nil
	}
	items := make([]ast.ItemSlice, 0, len(ccs))
	ccs.SortByName()
	for _, cat := range ccs {
		buf.WriteString(cat.Name)
		items = append(items, ast.ItemSlice{ast.CreateParaNode(&ast.LinkNode{
			Attrs:   nil,
			Ref:     ast.ParseReference(buf.String()),
			Inlines: ast.InlineSlice{&ast.TextNode{Text: cat.Name}},
		})})
		buf.Truncate(bufLen)
	}
	return &ast.NestedListNode{
		Kind:  ap.kind,
		Items: items,
		Attrs: nil,

	}
}

func (ap *actionPara) createBlockNodeTagSet(key string) ast.BlockNode {
	var buf bytes.Buffer
	ccs, bufLen := ap.prepareCatAction(key, &buf)
	if len(ccs) == 0 {
		return nil
	}
	ccs.SortByCount()
	ccs = ap.limitTags(ccs)
	countMap := ap.calcFontSizes(ccs)

	para := make(ast.InlineSlice, 0, len(ccs))
	ccs.SortByName()
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				Kind:    ast.FormatSuper,
				Attrs:   nil,
				Inlines: ast.InlineSlice{&ast.TextNode{Text: strconv.Itoa(cat.Count)}},
			},
		)
		buf.Truncate(bufLen)
	}
	return &ast.ParaNode{Inlines: para}, len(ccs)
}

func (ap *actionPara) limitTags(ccs meta.CountedCategories) meta.CountedCategories {
	if min, max := ap.min, ap.max; min > 0 || max > 0 {
		if min < 0 {
			min = ccs[len(ccs)-1].Count
		}







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				Kind:    ast.FormatSuper,
				Attrs:   nil,
				Inlines: ast.InlineSlice{&ast.TextNode{Text: strconv.Itoa(cat.Count)}},
			},
		)
		buf.Truncate(bufLen)
	}
	return &ast.ParaNode{Inlines: para}
}

func (ap *actionPara) limitTags(ccs meta.CountedCategories) meta.CountedCategories {
	if min, max := ap.min, ap.max; min > 0 || max > 0 {
		if min < 0 {
			min = ccs[len(ccs)-1].Count
		}
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			}
			return temp
		}
	}
	return ccs
}

func (ap *actionPara) createBlockNodeMetaKeys() (ast.BlockNode, int) {
	arr := make(meta.Arrangement, 128)
	for _, m := range ap.ml {
		for k := range m.Map() {
			arr[k] = append(arr[k], m)
		}
	}
	if len(arr) == 0 {
		return nil, 0
	}
	ccs := arr.Counted()
	ccs.SortByName()

	var buf bytes.Buffer
	bufLen := ap.prepareSimpleQuery(&buf)
	items := make([]ast.ItemSlice, 0, len(ccs))







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			}
			return temp
		}
	}
	return ccs
}

func (ap *actionPara) createBlockNodeMetaKeys() ast.BlockNode {
	arr := make(meta.Arrangement, 128)
	for _, m := range ap.ml {
		for k := range m.Map() {
			arr[k] = append(arr[k], m)
		}
	}
	if len(arr) == 0 {
		return nil
	}
	ccs := arr.Counted()
	ccs.SortByName()

	var buf bytes.Buffer
	bufLen := ap.prepareSimpleQuery(&buf)
	items := make([]ast.ItemSlice, 0, len(ccs))
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			&ast.TextNode{Text: ")"},
		)})
	}
	return &ast.NestedListNode{
		Kind:  ap.kind,
		Items: items,
		Attrs: nil,
	}, len(items)
}


func (ap *actionPara) createBlockNodeMeta(key string) (ast.BlockNode, int) {
	if len(ap.ml) == 0 {
		return nil, 0
	}
	items := make([]ast.ItemSlice, 0, len(ap.ml))
	for _, m := range ap.ml {
		if key != "" {
			if _, found := m.Get(key); !found {
				continue
			}
		}
		items = append(items, ast.ItemSlice{ast.CreateParaNode(&ast.LinkNode{
			Attrs:   nil,
			Ref:     ast.ParseReference(m.Zid.String()),
			Inlines: parser.ParseSpacedText(m.GetTitle()),
		})})
	}
	return &ast.NestedListNode{
		Kind:  ap.kind,
		Items: items,
		Attrs: nil,
	}, len(items)

}

func (ap *actionPara) prepareCatAction(key string, buf *bytes.Buffer) (meta.CountedCategories, int) {
	if len(ap.ml) == 0 {
		return nil, 0
	}
	ccs := meta.CreateArrangement(ap.ml, key).Counted()







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			&ast.TextNode{Text: ")"},
		)})
	}
	return &ast.NestedListNode{
		Kind:  ap.kind,
		Items: items,
		Attrs: nil,

	}
}

func (ap *actionPara) createBlockNodeMeta(key string) ast.BlockNode {
	if len(ap.ml) == 0 {
		return nil
	}
	items := make([]ast.ItemSlice, 0, len(ap.ml))
	for _, m := range ap.ml {
		if key != "" {
			if _, found := m.Get(key); !found {
				continue
			}
		}
		items = append(items, ast.ItemSlice{ast.CreateParaNode(&ast.LinkNode{
			Attrs:   nil,
			Ref:     ast.ParseReference(m.Zid.String()),
			Inlines: parser.ParseSpacedText(m.GetTitle()),
		})})
	}
	return &ast.NestedListNode{
		Kind:  ap.kind,
		Items: items,
		Attrs: nil,

	}
}

func (ap *actionPara) prepareCatAction(key string, buf *bytes.Buffer) (meta.CountedCategories, int) {
	if len(ap.ml) == 0 {
		return nil, 0
	}
	ccs := meta.CreateArrangement(ap.ml, key).Counted()
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const fontSizes = 6 // Must be the number of CSS classes zs-font-size-* in base.css
const fontSizes64 = float64(fontSizes)

func (*actionPara) calcFontSizes(ccs meta.CountedCategories) map[int]attrs.Attributes {
	var fsAttrs [fontSizes]attrs.Attributes
	var a attrs.Attributes
	for i := range fontSizes {
		fsAttrs[i] = a.AddClass("zs-font-size-" + strconv.Itoa(i))
	}

	countMap := make(map[int]int, len(ccs))
	for _, cat := range ccs {
		countMap[cat.Count]++
	}







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const fontSizes = 6 // Must be the number of CSS classes zs-font-size-* in base.css
const fontSizes64 = float64(fontSizes)

func (*actionPara) calcFontSizes(ccs meta.CountedCategories) map[int]attrs.Attributes {
	var fsAttrs [fontSizes]attrs.Attributes
	var a attrs.Attributes
	for i := 0; i < fontSizes; i++ {
		fsAttrs[i] = a.AddClass("zs-font-size-" + strconv.Itoa(i))
	}

	countMap := make(map[int]int, len(ccs))
	for _, cat := range ccs {
		countMap[cat.Count]++
	}
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		}
	}
	return result
}

func calcBudget(total, curSize float64) float64 { return math.Round(total / (fontSizes64 - curSize)) }

func (ap *actionPara) createBlockNodeRSS(cfg config.Config) (ast.BlockNode, int) {
	var rssConfig rss.Configuration
	rssConfig.Setup(ap.ctx, cfg)
	rssConfig.Title = ap.title
	data := rssConfig.Marshal(ap.q, ap.ml)

	return &ast.VerbatimNode{
		Kind:    ast.VerbatimProg,
		Attrs:   attrs.Attributes{"lang": "xml"},
		Content: data,
	}, len(ap.ml)
}


func (ap *actionPara) createBlockNodeAtom(cfg config.Config) (ast.BlockNode, int) {
	var atomConfig atom.Configuration
	atomConfig.Setup(cfg)
	atomConfig.Title = ap.title
	data := atomConfig.Marshal(ap.q, ap.ml)

	return &ast.VerbatimNode{
		Kind:    ast.VerbatimProg,
		Attrs:   attrs.Attributes{"lang": "xml"},
		Content: data,
	}, len(ap.ml)
}








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		}
	}
	return result
}

func calcBudget(total, curSize float64) float64 { return math.Round(total / (fontSizes64 - curSize)) }

func (ap *actionPara) createBlockNodeRSS(cfg config.Config) ast.BlockNode {
	var rssConfig rss.Configuration
	rssConfig.Setup(ap.ctx, cfg)
	rssConfig.Title = ap.title
	data := rssConfig.Marshal(ap.q, ap.ml)

	return &ast.VerbatimNode{
		Kind:    ast.VerbatimProg,
		Attrs:   attrs.Attributes{"lang": "xml"},
		Content: data,

	}
}

func (ap *actionPara) createBlockNodeAtom(cfg config.Config) ast.BlockNode {
	var atomConfig atom.Configuration
	atomConfig.Setup(cfg)
	atomConfig.Title = ap.title
	data := atomConfig.Marshal(ap.q, ap.ml)

	return &ast.VerbatimNode{
		Kind:    ast.VerbatimProg,
		Attrs:   attrs.Attributes{"lang": "xml"},
		Content: data,

	}
}

Changes to evaluator/metadata.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package evaluator

import (
	"zettelstore.de/z/ast"
	"zettelstore.de/z/zettel/meta"








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package evaluator

import (
	"zettelstore.de/z/ast"
	"zettelstore.de/z/zettel/meta"

Changes to go.mod.

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module zettelstore.de/z

go 1.22

require (
	github.com/fsnotify/fsnotify v1.7.0
	github.com/yuin/goldmark v1.7.0
	golang.org/x/crypto v0.20.0
	golang.org/x/term v0.17.0
	golang.org/x/text v0.14.0
	zettelstore.de/client.fossil v0.0.0-20240304164340-1f9d9b832cdd
	zettelstore.de/sx.fossil v0.0.0-20240304124557-67e0a1799d1d
)

require golang.org/x/sys v0.17.0 // indirect


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module zettelstore.de/z

go 1.21

require (
	github.com/fsnotify/fsnotify v1.7.0
	github.com/yuin/goldmark v1.6.0
	golang.org/x/crypto v0.16.0
	golang.org/x/term v0.15.0
	golang.org/x/text v0.14.0
	zettelstore.de/client.fossil v0.0.0-20231130151508-751754d40c73
	zettelstore.de/sx.fossil v0.0.0-20231130150648-05ef116ba207
)

require golang.org/x/sys v0.15.0 // indirect

Changes to go.sum.

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github.com/fsnotify/fsnotify v1.7.0 h1:8JEhPFa5W2WU7YfeZzPNqzMP6Lwt7L2715Ggo0nosvA=
github.com/fsnotify/fsnotify v1.7.0/go.mod h1:40Bi/Hjc2AVfZrqy+aj+yEI+/bRxZnMJyTJwOpGvigM=
github.com/yuin/goldmark v1.7.0 h1:EfOIvIMZIzHdB/R/zVrikYLPPwJlfMcNczJFMs1m6sA=
github.com/yuin/goldmark v1.7.0/go.mod h1:uzxRWxtg69N339t3louHJ7+O03ezfj6PlliRlaOzY1E=
golang.org/x/crypto v0.20.0 h1:jmAMJJZXr5KiCw05dfYK9QnqaqKLYXijU23lsEdcQqg=
golang.org/x/crypto v0.20.0/go.mod h1:Xwo95rrVNIoSMx9wa1JroENMToLWn3RNVrTBpLHgZPQ=
golang.org/x/sys v0.17.0 h1:25cE3gD+tdBA7lp7QfhuV+rJiE9YXTcS3VG1SqssI/Y=
golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/term v0.17.0 h1:mkTF7LCd6WGJNL3K1Ad7kwxNfYAW6a8a8QqtMblp/4U=
golang.org/x/term v0.17.0/go.mod h1:lLRBjIVuehSbZlaOtGMbcMncT+aqLLLmKrsjNrUguwk=
golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
zettelstore.de/client.fossil v0.0.0-20240304164340-1f9d9b832cdd h1:+LUJqi1mvXo/zM9Ii64hcGd1LD3oC8kh5yrmw2fFoco=
zettelstore.de/client.fossil v0.0.0-20240304164340-1f9d9b832cdd/go.mod h1:y5zhvVuDHJKFcySEe70537w+5RL50jpeZjqyQuBjfa0=
zettelstore.de/sx.fossil v0.0.0-20240304124557-67e0a1799d1d h1:Gl5ZmdNV5wJsNMIQYjAd/sWLq2ng4NP+eglWU7lQP+I=
zettelstore.de/sx.fossil v0.0.0-20240304124557-67e0a1799d1d/go.mod h1:/iGHxFXoo6GSV04PUkwaLuFrrCa5LMorxD73iLMAruI=


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github.com/fsnotify/fsnotify v1.7.0 h1:8JEhPFa5W2WU7YfeZzPNqzMP6Lwt7L2715Ggo0nosvA=
github.com/fsnotify/fsnotify v1.7.0/go.mod h1:40Bi/Hjc2AVfZrqy+aj+yEI+/bRxZnMJyTJwOpGvigM=
github.com/yuin/goldmark v1.6.0 h1:boZcn2GTjpsynOsC0iJHnBWa4Bi0qzfJjthwauItG68=
github.com/yuin/goldmark v1.6.0/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
golang.org/x/crypto v0.16.0 h1:mMMrFzRSCF0GvB7Ne27XVtVAaXLrPmgPC7/v0tkwHaY=
golang.org/x/crypto v0.16.0/go.mod h1:gCAAfMLgwOJRpTjQ2zCCt2OcSfYMTeZVSRtQlPC7Nq4=
golang.org/x/sys v0.15.0 h1:h48lPFYpsTvQJZF4EKyI4aLHaev3CxivZmv7yZig9pc=
golang.org/x/sys v0.15.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/term v0.15.0 h1:y/Oo/a/q3IXu26lQgl04j/gjuBDOBlx7X6Om1j2CPW4=
golang.org/x/term v0.15.0/go.mod h1:BDl952bC7+uMoWR75FIrCDx79TPU9oHkTZ9yRbYOrX0=
golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
zettelstore.de/client.fossil v0.0.0-20231130151508-751754d40c73 h1:LPF8QWip3GRLBzgPdnsJnrvk1sGiMOSpqOwURiax9gg=
zettelstore.de/client.fossil v0.0.0-20231130151508-751754d40c73/go.mod h1:fN+1WxRorSbHduS0T0B4GI8o82EgFuUWBv6fwsAZF6o=
zettelstore.de/sx.fossil v0.0.0-20231130150648-05ef116ba207 h1:8ch54z0w53bps6a00NDofEqo3AJ1l7ITXyC3XyLmlY4=
zettelstore.de/sx.fossil v0.0.0-20231130150648-05ef116ba207/go.mod h1:Uw3OLM1ufOM4Xe0G51mvkTDUv2okd+HyDBMx+0ZG7ME=

Added input/entity.go.































































































































































































































































































































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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//-----------------------------------------------------------------------------

package input

import (
	"html"
	"unicode"
)

// ScanEntity scans either a named or a numbered entity and returns it as a string.
//
// For numbered entities (like &#123; or &#x123;) html.UnescapeString returns
// sometimes other values as expected, if the number is not well-formed. This
// may happen because of some strange HTML parsing rules. But these do not
// apply to Zettelmarkup. Therefore, I parse the number here in the code.
func (inp *Input) ScanEntity() (res string, success bool) {
	if inp.Ch != '&' {
		return "", false
	}
	pos := inp.Pos
	inp.Next()
	if inp.Ch == '#' {
		inp.Next()
		if inp.Ch == 'x' || inp.Ch == 'X' {
			return inp.scanEntityBase16()
		}
		return inp.scanEntityBase10()
	}
	return inp.scanEntityNamed(pos)
}

func (inp *Input) scanEntityBase16() (string, bool) {
	inp.Next()
	if inp.Ch == ';' {
		return "", false
	}
	code := 0
	for {
		switch ch := inp.Ch; ch {
		case ';':
			inp.Next()
			if r := rune(code); isValidEntity(r) {
				return string(r), true
			}
			return "", false
		case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
			code = 16*code + int(ch-'0')
		case 'a', 'b', 'c', 'd', 'e', 'f':
			code = 16*code + int(ch-'a'+10)
		case 'A', 'B', 'C', 'D', 'E', 'F':
			code = 16*code + int(ch-'A'+10)
		default:
			return "", false
		}
		if code > unicode.MaxRune {
			return "", false
		}
		inp.Next()
	}
}

func (inp *Input) scanEntityBase10() (string, bool) {
	// Base 10 code
	if inp.Ch == ';' {
		return "", false
	}
	code := 0
	for {
		switch ch := inp.Ch; ch {
		case ';':
			inp.Next()
			if r := rune(code); isValidEntity(r) {
				return string(r), true
			}
			return "", false
		case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
			code = 10*code + int(ch-'0')
		default:
			return "", false
		}
		if code > unicode.MaxRune {
			return "", false
		}
		inp.Next()
	}
}
func (inp *Input) scanEntityNamed(pos int) (string, bool) {
	for {
		switch inp.Ch {
		case EOS, '\n', '\r', '&':
			return "", false
		case ';':
			inp.Next()
			es := string(inp.Src[pos:inp.Pos])
			ues := html.UnescapeString(es)
			if es == ues {
				return "", false
			}
			return ues, true
		default:
			inp.Next()
		}
	}
}

// isValidEntity checks if the given code is valid for an entity.
//
// According to https://html.spec.whatwg.org/multipage/syntax.html#character-references
// ""The numeric character reference forms described above are allowed to reference any code point
// excluding U+000D CR, noncharacters, and controls other than ASCII whitespace.""
func isValidEntity(r rune) bool {
	// No C0 control and no "code point in the range U+007F DELETE to U+009F APPLICATION PROGRAM COMMAND, inclusive."
	if r < ' ' || ('\u007f' <= r && r <= '\u009f') {
		return false
	}

	// If below any noncharacter code point, return true
	//
	// See: https://infra.spec.whatwg.org/#noncharacter
	if r < '\ufdd0' {
		return true
	}

	// First range of noncharacter code points: "(...) in the range U+FDD0 to U+FDEF, inclusive"
	if r <= '\ufdef' {
		return false
	}

	// Other noncharacter code points:
	switch r {
	case '\uFFFE', '\uFFFF',
		'\U0001FFFE', '\U0001FFFF',
		'\U0002FFFE', '\U0002FFFF',
		'\U0003FFFE', '\U0003FFFF',
		'\U0004FFFE', '\U0004FFFF',
		'\U0005FFFE', '\U0005FFFF',
		'\U0006FFFE', '\U0006FFFF',
		'\U0007FFFE', '\U0007FFFF',
		'\U0008FFFE', '\U0008FFFF',
		'\U0009FFFE', '\U0009FFFF',
		'\U000AFFFE', '\U000AFFFF',
		'\U000BFFFE', '\U000BFFFF',
		'\U000CFFFE', '\U000CFFFF',
		'\U000DFFFE', '\U000DFFFF',
		'\U000EFFFE', '\U000EFFFF',
		'\U000FFFFE', '\U000FFFFF',
		'\U0010FFFE', '\U0010FFFF':
		return false
	}
	return true
}

Added input/entity_test.go.



























































































































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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//-----------------------------------------------------------------------------

package input_test

import (
	"testing"

	"zettelstore.de/z/input"
)

func TestScanEntity(t *testing.T) {
	t.Parallel()
	var testcases = []struct {
		text string
		exp  string
	}{
		{"", ""},
		{"a", ""},
		{"&amp;", "&"},
		{"&#33;", "!"},
		{"&#x33;", "3"},
		{"&quot;", "\""},
	}
	for id, tc := range testcases {
		inp := input.NewInput([]byte(tc.text))
		got, ok := inp.ScanEntity()
		if !ok {
			if tc.exp != "" {
				t.Errorf("ID=%d, text=%q: expected error, but got %q", id, tc.text, got)
			}
			if inp.Pos != 0 {
				t.Errorf("ID=%d, text=%q: input position advances to %d", id, tc.text, inp.Pos)
			}
			continue
		}
		if tc.exp != got {
			t.Errorf("ID=%d, text=%q: expected %q, but got %q", id, tc.text, tc.exp, got)
		}
	}
}

func TestScanIllegalEntity(t *testing.T) {
	t.Parallel()
	testcases := []string{"", "a", "& Input &rarr;", "&#9;", "&#x1f;"}
	for i, tc := range testcases {
		inp := input.NewInput([]byte(tc))
		got, ok := inp.ScanEntity()
		if ok {
			t.Errorf("%d: scanning %q was unexpected successful, got %q", i, tc, got)
			continue
		}
	}
}

Added input/input.go.



















































































































































































































































































































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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//-----------------------------------------------------------------------------

// Package input provides an abstraction for data to be read.
package input

import "unicode/utf8"

// Input is an abstract input source
type Input struct {
	// Read-only, will never change
	Src []byte // The source string

	// Read-only, will change
	Ch      rune // current character
	Pos     int  // character position in src
	readPos int  // reading position (position after current character)
}

// NewInput creates a new input source.
func NewInput(src []byte) *Input {
	inp := &Input{Src: src}
	inp.Next()
	return inp
}

// EOS = End of source
const EOS = rune(-1)

// Next reads the next rune into inp.Ch and returns it too.
func (inp *Input) Next() rune {
	if inp.readPos >= len(inp.Src) {
		inp.Pos = len(inp.Src)
		inp.Ch = EOS
		return EOS
	}
	inp.Pos = inp.readPos
	r, w := rune(inp.Src[inp.readPos]), 1
	if r >= utf8.RuneSelf {
		r, w = utf8.DecodeRune(inp.Src[inp.readPos:])
	}
	inp.readPos += w
	inp.Ch = r
	return r
}

// Peek returns the rune following the most recently read rune without
// advancing. If end-of-source was already found peek returns EOS.
func (inp *Input) Peek() rune {
	return inp.PeekN(0)
}

// PeekN returns the n-th rune after the most recently read rune without
// advancing. If end-of-source was already found peek returns EOS.
func (inp *Input) PeekN(n int) rune {
	pos := inp.readPos + n
	if pos < len(inp.Src) {
		r := rune(inp.Src[pos])
		if r >= utf8.RuneSelf {
			r, _ = utf8.DecodeRune(inp.Src[pos:])
		}
		if r == '\t' {
			return ' '
		}
		return r
	}
	return EOS
}

// Accept checks if the given string is a prefix of the text to be parsed.
// If successful, advance position and current character.
// String must only contain bytes < 128.
// If not successful, everything remains as it is.
func (inp *Input) Accept(s string) bool {
	pos := inp.Pos
	remaining := len(inp.Src) - pos
	if s == "" || len(s) > remaining {
		return false
	}
	// According to internal documentation of bytes.Equal, the string() will not allocate any memory.
	if readPos := pos + len(s); s == string(inp.Src[pos:readPos]) {
		inp.readPos = readPos
		inp.Next()
		return true
	}
	return false
}

// IsEOLEOS returns true if char is either EOS or EOL.
func IsEOLEOS(ch rune) bool {
	switch ch {
	case EOS, '\n', '\r':
		return true
	}
	return false
}

// EatEOL transforms both "\r" and "\r\n" into "\n".
func (inp *Input) EatEOL() {
	switch inp.Ch {
	case '\r':
		if inp.Peek() == '\n' {
			inp.Next()
		}
		inp.Ch = '\n'
		inp.Next()
	case '\n':
		inp.Next()
	}
}

// SetPos allows to reset the read position.
func (inp *Input) SetPos(pos int) {
	if inp.Pos != pos {
		inp.readPos = pos
		inp.Next()
	}
}

// SkipToEOL reads until the next end-of-line.
func (inp *Input) SkipToEOL() {
	for {
		switch inp.Ch {
		case EOS, '\n', '\r':
			return
		}
		inp.Next()
	}
}

// ScanLineContent reads the reaining input stream and interprets it as lines of text.
func (inp *Input) ScanLineContent() []byte {
	result := make([]byte, 0, len(inp.Src)-inp.Pos+1)
	for {
		inp.EatEOL()
		posL := inp.Pos
		if inp.Ch == EOS {
			return result
		}
		inp.SkipToEOL()
		if len(result) > 0 {
			result = append(result, '\n')
		}
		result = append(result, inp.Src[posL:inp.Pos]...)
	}
}

Added input/input_test.go.



































































































































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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//-----------------------------------------------------------------------------

// Package input_test provides some unit-tests for reading data.
package input_test

import (
	"testing"

	"zettelstore.de/z/input"
)

func TestEatEOL(t *testing.T) {
	t.Parallel()
	inp := input.NewInput(nil)
	inp.EatEOL()
	if inp.Ch != input.EOS {
		t.Errorf("No EOS found: %q", inp.Ch)
	}
	if inp.Pos != 0 {
		t.Errorf("Pos != 0: %d", inp.Pos)
	}

	inp = input.NewInput([]byte("ABC"))
	if inp.Ch != 'A' {
		t.Errorf("First ch != 'A', got %q", inp.Ch)
	}
	inp.EatEOL()
	if inp.Ch != 'A' {
		t.Errorf("First ch != 'A', got %q", inp.Ch)
	}
}

func TestAccept(t *testing.T) {
	t.Parallel()
	testcases := []struct {
		accept string
		src    string
		acc    bool
		exp    rune
	}{
		{"", "", false, input.EOS},
		{"AB", "abc", false, 'a'},
		{"AB", "ABC", true, 'C'},
		{"AB", "AB", true, input.EOS},
		{"AB", "A", false, 'A'},
	}
	for i, tc := range testcases {
		inp := input.NewInput([]byte(tc.src))
		acc := inp.Accept(tc.accept)
		if acc != tc.acc {
			t.Errorf("%d: %q.Accept(%q) == %v, but got %v", i, tc.src, tc.accept, tc.acc, acc)
		}
		if got := inp.Ch; tc.exp != got {
			t.Errorf("%d: %q.Accept(%q) should result in run %v, but got %v", i, tc.src, tc.accept, tc.exp, got)
		}
	}
}

Added input/runes.go.

















































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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//-----------------------------------------------------------------------------

package input

import "unicode"

// IsSpace returns true if rune is a whitespace.
func IsSpace(ch rune) bool {
	switch ch {
	case ' ', '\t':
		return true
	case '\n', '\r', EOS:
		return false
	}
	return unicode.IsSpace(ch)
}

Changes to kernel/impl/auth.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package impl

import (
	"errors"
	"sync"








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package impl

import (
	"errors"
	"sync"
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func (as *authService) Start(*myKernel) error {
	as.mxService.Lock()
	defer as.mxService.Unlock()
	readonlyMode := as.GetNextConfig(kernel.AuthReadonly).(bool)
	owner := as.GetNextConfig(kernel.AuthOwner).(id.Zid)
	authMgr, err := as.createManager(readonlyMode, owner)
	if err != nil {
		as.logger.Error().Err(err).Msg("Unable to create manager")
		return err
	}
	as.logger.Info().Msg("Start Manager")
	as.manager = authMgr
	return nil
}








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func (as *authService) Start(*myKernel) error {
	as.mxService.Lock()
	defer as.mxService.Unlock()
	readonlyMode := as.GetNextConfig(kernel.AuthReadonly).(bool)
	owner := as.GetNextConfig(kernel.AuthOwner).(id.Zid)
	authMgr, err := as.createManager(readonlyMode, owner)
	if err != nil {
		as.logger.Fatal().Err(err).Msg("Unable to create manager")
		return err
	}
	as.logger.Info().Msg("Start Manager")
	as.manager = authMgr
	return nil
}

Changes to kernel/impl/box.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package impl

import (
	"context"
	"errors"








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package impl

import (
	"context"
	"errors"
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		}
		boxURIs = append(boxURIs, u.(*url.URL))
	}
	ps.mxService.Lock()
	defer ps.mxService.Unlock()
	mgr, err := ps.createManager(boxURIs, kern.auth.manager, &kern.cfg)
	if err != nil {
		ps.logger.Error().Err(err).Msg("Unable to create manager")
		return err
	}
	ps.logger.Info().Str("location", mgr.Location()).Msg("Start Manager")
	if err = mgr.Start(context.Background()); err != nil {
		ps.logger.Error().Err(err).Msg("Unable to start manager")
		return err
	}
	kern.cfg.setBox(mgr)
	ps.manager = mgr
	return nil
}








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		}
		boxURIs = append(boxURIs, u.(*url.URL))
	}
	ps.mxService.Lock()
	defer ps.mxService.Unlock()
	mgr, err := ps.createManager(boxURIs, kern.auth.manager, &kern.cfg)
	if err != nil {
		ps.logger.Fatal().Err(err).Msg("Unable to create manager")
		return err
	}
	ps.logger.Info().Str("location", mgr.Location()).Msg("Start Manager")
	if err = mgr.Start(context.Background()); err != nil {
		ps.logger.Fatal().Err(err).Msg("Unable to start manager")
		return err
	}
	kern.cfg.setBox(mgr)
	ps.manager = mgr
	return nil
}

Changes to kernel/impl/cfg.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package impl

import (
	"context"
	"errors"








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package impl

import (
	"context"
	"errors"

Changes to kernel/impl/cmd.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package impl

import (
	"fmt"
	"io"








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package impl

import (
	"fmt"
	"io"

Changes to kernel/impl/config.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package impl

import (
	"errors"
	"fmt"








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package impl

import (
	"errors"
	"fmt"

Changes to kernel/impl/core.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package impl

import (
	"fmt"
	"net"








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package impl

import (
	"fmt"
	"net"

Changes to kernel/impl/impl.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

// Package impl provides the kernel implementation.
package impl

import (
	"errors"








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package impl provides the kernel implementation.
package impl

import (
	"errors"
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	srv    service
	srvnum kernel.Service
}
type serviceDependency map[kernel.Service][]kernel.Service

const (
	defaultNormalLogLevel = logger.InfoLevel
	defaultSimpleLogLevel = logger.ErrorLevel
)

// create a new kernel.
func init() {
	kernel.Main = createKernel()
}








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	srv    service
	srvnum kernel.Service
}
type serviceDependency map[kernel.Service][]kernel.Service

const (
	defaultNormalLogLevel = logger.InfoLevel
	defaultSimpleLogLevel = logger.WarnLevel
)

// create a new kernel.
func init() {
	kernel.Main = createKernel()
}

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		kernel.AuthService:   {&kern.auth, "auth", defaultNormalLogLevel},
		kernel.BoxService:    {&kern.box, "box", defaultNormalLogLevel},
		kernel.WebService:    {&kern.web, "web", defaultNormalLogLevel},
	}
	kern.srvNames = make(map[string]serviceData, len(kern.srvs))
	for key, srvD := range kern.srvs {
		if _, ok := kern.srvNames[srvD.name]; ok {
			kern.logger.Error().Str("service", srvD.name).Msg("Service data already set, ignore")
		}
		kern.srvNames[srvD.name] = serviceData{srvD.srv, key}
		l := logger.New(lw, strings.ToUpper(srvD.name)).SetLevel(srvD.logLevel)
		kern.logger.Debug().Str("service", srvD.name).Msg("Initialize")
		srvD.srv.Initialize(l)
	}
	kern.depStart = serviceDependency{







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		kernel.AuthService:   {&kern.auth, "auth", defaultNormalLogLevel},
		kernel.BoxService:    {&kern.box, "box", defaultNormalLogLevel},
		kernel.WebService:    {&kern.web, "web", defaultNormalLogLevel},
	}
	kern.srvNames = make(map[string]serviceData, len(kern.srvs))
	for key, srvD := range kern.srvs {
		if _, ok := kern.srvNames[srvD.name]; ok {
			kern.logger.Panic().Str("service", srvD.name).Msg("Service data already set")
		}
		kern.srvNames[srvD.name] = serviceData{srvD.srv, key}
		l := logger.New(lw, strings.ToUpper(srvD.name)).SetLevel(srvD.logLevel)
		kern.logger.Debug().Str("service", srvD.name).Msg("Initialize")
		srvD.srv.Initialize(l)
	}
	kern.depStart = serviceDependency{
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		logger.Mandatory().Msg("Licensed under the latest version of the EUPL (European Union Public License)")
		if configFilename != "" {
			logger.Mandatory().Str("filename", configFilename).Msg("Configuration file found")
		} else {
			logger.Mandatory().Msg("No configuration file found / used")
		}
		if kern.core.GetCurConfig(kernel.CoreDebug).(bool) {
			logger.Info().Msg("----------------------------------------")
			logger.Info().Msg("DEBUG MODE, DO NO USE THIS IN PRODUCTION")
			logger.Info().Msg("----------------------------------------")
		}
		if kern.auth.GetCurConfig(kernel.AuthReadonly).(bool) {
			logger.Info().Msg("Read-only mode")
		}
	}
	if lineServer {
		port := kern.core.GetNextConfig(kernel.CorePort).(int)







|
|
|







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		logger.Mandatory().Msg("Licensed under the latest version of the EUPL (European Union Public License)")
		if configFilename != "" {
			logger.Mandatory().Str("filename", configFilename).Msg("Configuration file found")
		} else {
			logger.Mandatory().Msg("No configuration file found / used")
		}
		if kern.core.GetCurConfig(kernel.CoreDebug).(bool) {
			logger.Warn().Msg("----------------------------------------")
			logger.Warn().Msg("DEBUG MODE, DO NO USE THIS IN PRODUCTION")
			logger.Warn().Msg("----------------------------------------")
		}
		if kern.auth.GetCurConfig(kernel.AuthReadonly).(bool) {
			logger.Info().Msg("Read-only mode")
		}
	}
	if lineServer {
		port := kern.core.GetNextConfig(kernel.CorePort).(int)
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// LogRecover outputs some information about the previous panic.
func (kern *myKernel) LogRecover(name string, recoverInfo interface{}) bool {
	return kern.doLogRecover(name, recoverInfo)
}
func (kern *myKernel) doLogRecover(name string, recoverInfo interface{}) bool {
	stack := debug.Stack()
	kern.logger.Error().Str("recovered_from", fmt.Sprint(recoverInfo)).Bytes("stack", stack).Msg(name)
	kern.core.updateRecoverInfo(name, recoverInfo, stack)
	return true
}

// --- Profiling ---------------------------------------------------------

var errProfileInWork = errors.New("already profiling")







|







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// LogRecover outputs some information about the previous panic.
func (kern *myKernel) LogRecover(name string, recoverInfo interface{}) bool {
	return kern.doLogRecover(name, recoverInfo)
}
func (kern *myKernel) doLogRecover(name string, recoverInfo interface{}) bool {
	stack := debug.Stack()
	kern.logger.Fatal().Str("recovered_from", fmt.Sprint(recoverInfo)).Bytes("stack", stack).Msg(name)
	kern.core.updateRecoverInfo(name, recoverInfo, stack)
	return true
}

// --- Profiling ---------------------------------------------------------

var errProfileInWork = errors.New("already profiling")

Changes to kernel/impl/log.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package impl

import (
	"os"
	"sync"








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<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package impl

import (
	"os"
	"sync"
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	}
	buf = append(buf, msg...)
	buf = append(buf, details...)
	buf = append(buf, '\n')
	_, err := os.Stdout.Write(buf)

	klw.mx.Unlock()



	return err
}

func addTimestamp(buf *[]byte, ts time.Time) {
	year, month, day := ts.Date()
	itoa(buf, year, 4)
	*buf = append(*buf, '-')







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	}
	buf = append(buf, msg...)
	buf = append(buf, details...)
	buf = append(buf, '\n')
	_, err := os.Stdout.Write(buf)

	klw.mx.Unlock()
	if level == logger.PanicLevel {
		panic(err)
	}
	return err
}

func addTimestamp(buf *[]byte, ts time.Time) {
	year, month, day := ts.Date()
	itoa(buf, year, 4)
	*buf = append(*buf, '-')
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	defer klw.mx.RUnlock()

	if !klw.full {
		if klw.writePos == 0 {
			return nil
		}
		result := make([]kernel.LogEntry, klw.writePos)
		for i := range klw.writePos {
			copyE2E(&result[i], &klw.data[i])
		}
		return result
	}
	result := make([]kernel.LogEntry, cap(klw.data))
	pos := 0
	for j := klw.writePos; j < cap(klw.data); j++ {
		copyE2E(&result[pos], &klw.data[j])
		pos++
	}
	for j := range klw.writePos {
		copyE2E(&result[pos], &klw.data[j])
		pos++
	}
	return result
}

func (klw *kernelLogWriter) getLastLogTime() time.Time {







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	defer klw.mx.RUnlock()

	if !klw.full {
		if klw.writePos == 0 {
			return nil
		}
		result := make([]kernel.LogEntry, klw.writePos)
		for i := 0; i < klw.writePos; i++ {
			copyE2E(&result[i], &klw.data[i])
		}
		return result
	}
	result := make([]kernel.LogEntry, cap(klw.data))
	pos := 0
	for j := klw.writePos; j < cap(klw.data); j++ {
		copyE2E(&result[pos], &klw.data[j])
		pos++
	}
	for j := 0; j < klw.writePos; j++ {
		copyE2E(&result[pos], &klw.data[j])
		pos++
	}
	return result
}

func (klw *kernelLogWriter) getLastLogTime() time.Time {

Changes to kernel/impl/server.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package impl

import (
	"bufio"
	"net"
)

func startLineServer(kern *myKernel, listenAddr string) error {
	ln, err := net.Listen("tcp", listenAddr)
	if err != nil {
		kern.logger.Error().Err(err).Msg("Unable to start administration console")
		return err
	}
	kern.logger.Mandatory().Str("listen", listenAddr).Msg("Start administration console")
	go func() { lineServer(ln, kern) }()
	return nil
}









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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package impl

import (
	"bufio"
	"net"
)

func startLineServer(kern *myKernel, listenAddr string) error {
	ln, err := net.Listen("tcp", listenAddr)
	if err != nil {
		kern.logger.Fatal().Err(err).Msg("Unable to start administration console")
		return err
	}
	kern.logger.Mandatory().Str("listen", listenAddr).Msg("Start administration console")
	go func() { lineServer(ln, kern) }()
	return nil
}

Changes to kernel/impl/web.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package impl

import (
	"errors"
	"net"








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package impl

import (
	"errors"
	"net"
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	secureCookie := ws.GetNextConfig(kernel.WebSecureCookie).(bool)
	maxRequestSize := ws.GetNextConfig(kernel.WebMaxRequestSize).(int64)
	if maxRequestSize < 1024 {
		maxRequestSize = 1024
	}

	if !strings.HasSuffix(baseURL, urlPrefix) {
		ws.logger.Error().Str("base-url", baseURL).Str("url-prefix", urlPrefix).Msg(
			"url-prefix is not a suffix of base-url")
		return errWrongBasePrefix
	}

	if lap := netip.MustParseAddrPort(listenAddr); !kern.auth.manager.WithAuth() && !lap.Addr().IsLoopback() {
		ws.logger.Info().Str("listen", listenAddr).Msg("service may be reached from outside, but authentication is not enabled")
	}

	srvw := impl.New(ws.logger, listenAddr, baseURL, urlPrefix, persistentCookie, secureCookie, maxRequestSize, kern.auth.manager)
	err := kern.web.setupServer(srvw, kern.box.manager, kern.auth.manager, &kern.cfg)
	if err != nil {
		ws.logger.Error().Err(err).Msg("Unable to create")
		return err
	}
	if kern.core.GetNextConfig(kernel.CoreDebug).(bool) {
		srvw.SetDebug()
	}
	if err = srvw.Run(); err != nil {
		ws.logger.Error().Err(err).Msg("Unable to start")
		return err
	}
	ws.logger.Info().Str("listen", listenAddr).Str("base-url", baseURL).Msg("Start Service")
	ws.mxService.Lock()
	ws.srvw = srvw
	ws.mxService.Unlock()








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	secureCookie := ws.GetNextConfig(kernel.WebSecureCookie).(bool)
	maxRequestSize := ws.GetNextConfig(kernel.WebMaxRequestSize).(int64)
	if maxRequestSize < 1024 {
		maxRequestSize = 1024
	}

	if !strings.HasSuffix(baseURL, urlPrefix) {
		ws.logger.Fatal().Str("base-url", baseURL).Str("url-prefix", urlPrefix).Msg(
			"url-prefix is not a suffix of base-url")
		return errWrongBasePrefix
	}

	if lap := netip.MustParseAddrPort(listenAddr); !kern.auth.manager.WithAuth() && !lap.Addr().IsLoopback() {
		ws.logger.Warn().Str("listen", listenAddr).Msg("service may be reached from outside, but authentication is not enabled")
	}

	srvw := impl.New(ws.logger, listenAddr, baseURL, urlPrefix, persistentCookie, secureCookie, maxRequestSize, kern.auth.manager)
	err := kern.web.setupServer(srvw, kern.box.manager, kern.auth.manager, &kern.cfg)
	if err != nil {
		ws.logger.Fatal().Err(err).Msg("Unable to create")
		return err
	}
	if kern.core.GetNextConfig(kernel.CoreDebug).(bool) {
		srvw.SetDebug()
	}
	if err = srvw.Run(); err != nil {
		ws.logger.Fatal().Err(err).Msg("Unable to start")
		return err
	}
	ws.logger.Info().Str("listen", listenAddr).Str("base-url", baseURL).Msg("Start Service")
	ws.mxService.Lock()
	ws.srvw = srvw
	ws.mxService.Unlock()

Changes to kernel/kernel.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

// Package kernel provides the main kernel service.
package kernel

import (
	"io"








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package kernel provides the main kernel service.
package kernel

import (
	"io"

Changes to logger/logger.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

// Package logger implements a logging package for use in the Zettelstore.
package logger

import (
	"context"








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package logger implements a logging package for use in the Zettelstore.
package logger

import (
	"context"
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type Level uint8

// Constants for Level
const (
	NoLevel        Level = iota // the absent log level
	TraceLevel                  // Log most internal activities
	DebugLevel                  // Log most data updates

	InfoLevel                   // Log normal activities

	ErrorLevel                  // Log (persistent) errors


	MandatoryLevel              // Log only mandatory events
	NeverLevel                  // Logging is disabled
)

var logLevel = [...]string{
	"     ",
	"TRACE",
	"DEBUG",

	"INFO ",

	"ERROR",


	">>>>>",
	"NEVER",
}

var strLevel = [...]string{
	"",
	"trace",
	"debug",

	"info",

	"error",


	"mandatory",
	"disabled",
}

// IsValid returns true, if the level is a valid level
func (l Level) IsValid() bool { return TraceLevel <= l && l <= NeverLevel }








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type Level uint8

// Constants for Level
const (
	NoLevel        Level = iota // the absent log level
	TraceLevel                  // Log most internal activities
	DebugLevel                  // Log most data updates
	SenseLevel                  // Log activities of minor interest
	InfoLevel                   // Log normal activities
	WarnLevel                   // Log event that can be easily recovered
	ErrorLevel                  // Log (persistent) errors
	FatalLevel                  // Log event that cannot be recovered within an internal acitivty
	PanicLevel                  // Log event that must stop the software
	MandatoryLevel              // Log only mandatory events
	NeverLevel                  // Logging is disabled
)

var logLevel = [...]string{
	"     ",
	"TRACE",
	"DEBUG",
	"SENSE",
	"INFO ",
	"WARN ",
	"ERROR",
	"FATAL",
	"PANIC",
	">>>>>",
	"NEVER",
}

var strLevel = [...]string{
	"",
	"trace",
	"debug",
	"sense",
	"info",
	"warn",
	"error",
	"fatal",
	"panic",
	"mandatory",
	"disabled",
}

// IsValid returns true, if the level is a valid level
func (l Level) IsValid() bool { return TraceLevel <= l && l <= NeverLevel }

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// Trace creates a tracing message.
func (l *Logger) Trace() *Message { return newMessage(l, TraceLevel) }

// Debug creates a debug message.
func (l *Logger) Debug() *Message { return newMessage(l, DebugLevel) }




// Info creates a message suitable for information data.
func (l *Logger) Info() *Message { return newMessage(l, InfoLevel) }




// Error creates a message suitable for errors.
func (l *Logger) Error() *Message { return newMessage(l, ErrorLevel) }







// Mandatory creates a message that will always logged, except when logging
// is disabled.
func (l *Logger) Mandatory() *Message { return newMessage(l, MandatoryLevel) }

// Clone creates a message to clone the logger.
func (l *Logger) Clone() *Message {
	msg := newMessage(l, NeverLevel)







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// Trace creates a tracing message.
func (l *Logger) Trace() *Message { return newMessage(l, TraceLevel) }

// Debug creates a debug message.
func (l *Logger) Debug() *Message { return newMessage(l, DebugLevel) }

// Sense creates a message suitable for sensing data.
func (l *Logger) Sense() *Message { return newMessage(l, SenseLevel) }

// Info creates a message suitable for information data.
func (l *Logger) Info() *Message { return newMessage(l, InfoLevel) }

// Warn creates a message suitable for warning the user.
func (l *Logger) Warn() *Message { return newMessage(l, WarnLevel) }

// Error creates a message suitable for errors.
func (l *Logger) Error() *Message { return newMessage(l, ErrorLevel) }

// Fatal creates a message suitable for fatal errors.
func (l *Logger) Fatal() *Message { return newMessage(l, FatalLevel) }

// Panic creates a message suitable for panicing.
func (l *Logger) Panic() *Message { return newMessage(l, PanicLevel) }

// Mandatory creates a message that will always logged, except when logging
// is disabled.
func (l *Logger) Mandatory() *Message { return newMessage(l, MandatoryLevel) }

// Clone creates a message to clone the logger.
func (l *Logger) Clone() *Message {
	msg := newMessage(l, NeverLevel)

Changes to logger/logger_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package logger_test

import (
	"fmt"
	"os"








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package logger_test

import (
	"fmt"
	"os"
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	testcases := []struct {
		text string
		exp  logger.Level
	}{
		{"tra", logger.TraceLevel},
		{"deb", logger.DebugLevel},
		{"info", logger.InfoLevel},

		{"err", logger.ErrorLevel},


		{"manda", logger.MandatoryLevel},
		{"dis", logger.NeverLevel},
		{"d", logger.Level(0)},
	}
	for i, tc := range testcases {
		got := logger.ParseLevel(tc.text)
		if got != tc.exp {
			t.Errorf("%d: ParseLevel(%q) == %q, but got %q", i, tc.text, tc.exp, got)
		}
	}
}

func BenchmarkDisabled(b *testing.B) {
	log := logger.New(&stderrLogWriter{}, "").SetLevel(logger.NeverLevel)
	for range b.N {
		log.Info().Str("key", "val").Msg("Benchmark")
	}
}

type stderrLogWriter struct{}

func (*stderrLogWriter) WriteMessage(level logger.Level, ts time.Time, prefix, msg string, details []byte) error {
	fmt.Fprintf(os.Stderr, "%v %v %v %v %v\n", level.Format(), ts, prefix, msg, string(details))
	return nil
}

type testLogWriter struct{}

func (*testLogWriter) WriteMessage(logger.Level, time.Time, string, string, []byte) error {
	return nil
}

func BenchmarkStrMessage(b *testing.B) {
	log := logger.New(&testLogWriter{}, "")
	for range b.N {
		log.Info().Str("key", "val").Msg("Benchmark")
	}
}

func BenchmarkMessage(b *testing.B) {
	log := logger.New(&testLogWriter{}, "")
	for range b.N {
		log.Info().Msg("Benchmark")
	}
}

func BenchmarkCloneStrMessage(b *testing.B) {
	log := logger.New(&testLogWriter{}, "").Clone().Str("sss", "ttt").Child()
	for range b.N {
		log.Info().Msg("123456789")
	}
}







>

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|






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|



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	testcases := []struct {
		text string
		exp  logger.Level
	}{
		{"tra", logger.TraceLevel},
		{"deb", logger.DebugLevel},
		{"info", logger.InfoLevel},
		{"warn", logger.WarnLevel},
		{"err", logger.ErrorLevel},
		{"fata", logger.FatalLevel},
		{"pan", logger.PanicLevel},
		{"manda", logger.MandatoryLevel},
		{"dis", logger.NeverLevel},
		{"d", logger.Level(0)},
	}
	for i, tc := range testcases {
		got := logger.ParseLevel(tc.text)
		if got != tc.exp {
			t.Errorf("%d: ParseLevel(%q) == %q, but got %q", i, tc.text, tc.exp, got)
		}
	}
}

func BenchmarkDisabled(b *testing.B) {
	log := logger.New(&stderrLogWriter{}, "").SetLevel(logger.NeverLevel)
	for n := 0; n < b.N; n++ {
		log.Info().Str("key", "val").Msg("Benchmark")
	}
}

type stderrLogWriter struct{}

func (*stderrLogWriter) WriteMessage(level logger.Level, ts time.Time, prefix, msg string, details []byte) error {
	fmt.Fprintf(os.Stderr, "%v %v %v %v %v\n", level.Format(), ts, prefix, msg, string(details))
	return nil
}

type testLogWriter struct{}

func (*testLogWriter) WriteMessage(logger.Level, time.Time, string, string, []byte) error {
	return nil
}

func BenchmarkStrMessage(b *testing.B) {
	log := logger.New(&testLogWriter{}, "")
	for n := 0; n < b.N; n++ {
		log.Info().Str("key", "val").Msg("Benchmark")
	}
}

func BenchmarkMessage(b *testing.B) {
	log := logger.New(&testLogWriter{}, "")
	for n := 0; n < b.N; n++ {
		log.Info().Msg("Benchmark")
	}
}

func BenchmarkCloneStrMessage(b *testing.B) {
	log := logger.New(&testLogWriter{}, "").Clone().Str("sss", "ttt").Child()
	for n := 0; n < b.N; n++ {
		log.Info().Msg("123456789")
	}
}

Changes to logger/message.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

package logger

import (
	"context"
	"net/http"








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<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package logger

import (
	"context"
	"net/http"

Changes to parser/blob/blob.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package blob provides a parser of binary data.
package blob

import (
	"zettelstore.de/client.fossil/input"
	"zettelstore.de/z/ast"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/zettel/meta"
)

func init() {
	parser.Register(&parser.Info{
		Name:          meta.SyntaxGif,








<
<
<






|
|







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package blob provides a parser of binary data.
package blob

import (
	"zettelstore.de/z/ast"
	"zettelstore.de/z/input"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/zettel/meta"
)

func init() {
	parser.Register(&parser.Info{
		Name:          meta.SyntaxGif,

Changes to parser/cleaner/cleaner.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package cleaner provides functions to clean up the parsed AST.
package cleaner

import (
	"strconv"








<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package cleaner provides functions to clean up the parsed AST.
package cleaner

import (
	"strconv"

Changes to parser/draw/canvas.go.

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// license, but later changed to fulfil the needs of Zettelstore. The following
// statements affects the original code as found on
// https://github.com/asciitosvg/asciitosvg (Commit:
// ca82a5ce41e2190a05e07af6e8b3ea4e3256a283, 2020-11-20):
//
// Copyright 2012 - 2018 The ASCIIToSVG Contributors
// All rights reserved.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

package draw

import (
	"bytes"
	"fmt"







<
<
<







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// license, but later changed to fulfil the needs of Zettelstore. The following
// statements affects the original code as found on
// https://github.com/asciitosvg/asciitosvg (Commit:
// ca82a5ce41e2190a05e07af6e8b3ea4e3256a283, 2020-11-20):
//
// Copyright 2012 - 2018 The ASCIIToSVG Contributors
// All rights reserved.



//-----------------------------------------------------------------------------

package draw

import (
	"bytes"
	"fmt"
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	c.findTexts()
	sort.Sort(c.objs)
}

// findPaths by starting with a point that wasn't yet visited, beginning at the top
// left of the grid.
func (c *canvas) findPaths() {
	for y := range c.siz.Y {
		p := point{y: y}
		for x := range c.siz.X {
			p.x = x
			if c.isVisited(p) {
				continue
			}
			ch := c.at(p)
			if !ch.isPathStart() {
				continue







|

|







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	c.findTexts()
	sort.Sort(c.objs)
}

// findPaths by starting with a point that wasn't yet visited, beginning at the top
// left of the grid.
func (c *canvas) findPaths() {
	for y := 0; y < c.siz.Y; y++ {
		p := point{y: y}
		for x := 0; x < c.siz.X; x++ {
			p.x = x
			if c.isVisited(p) {
				continue
			}
			ch := c.at(p)
			if !ch.isPathStart() {
				continue
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			c.objs = append(c.objs, objs...)
		}
	}
}

// findTexts with a second pass through the grid attempts to identify any text within the grid.
func (c *canvas) findTexts() {
	for y := range c.siz.Y {
		p := point{}
		p.y = y
		for x := range c.siz.X {
			p.x = x
			if c.isVisited(p) {
				continue
			}
			ch := c.at(p)
			if !ch.isTextStart() {
				continue







|


|







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			c.objs = append(c.objs, objs...)
		}
	}
}

// findTexts with a second pass through the grid attempts to identify any text within the grid.
func (c *canvas) findTexts() {
	for y := 0; y < c.siz.Y; y++ {
		p := point{}
		p.y = y
		for x := 0; x < c.siz.X; x++ {
			p.x = x
			if c.isVisited(p) {
				continue
			}
			ch := c.at(p)
			if !ch.isTextStart() {
				continue

Changes to parser/draw/canvas_test.go.

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// license, but later changed to fulfil the needs of Zettelstore. The following
// statements affects the original code as found on
// https://github.com/asciitosvg/asciitosvg (Commit:
// ca82a5ce41e2190a05e07af6e8b3ea4e3256a283, 2020-11-20):
//
// Copyright 2012 - 2018 The ASCIIToSVG Contributors
// All rights reserved.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

package draw

import (
	"reflect"
	"strings"







<
<
<







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// license, but later changed to fulfil the needs of Zettelstore. The following
// statements affects the original code as found on
// https://github.com/asciitosvg/asciitosvg (Commit:
// ca82a5ce41e2190a05e07af6e8b3ea4e3256a283, 2020-11-20):
//
// Copyright 2012 - 2018 The ASCIIToSVG Contributors
// All rights reserved.



//-----------------------------------------------------------------------------

package draw

import (
	"reflect"
	"strings"
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		"             |     |       |         |   |",
		"             +-----+-------+---------+---+",
		"",
		"",
	}
	chunk := []byte(strings.Join(data, "\n"))
	input := make([]byte, 0, len(chunk)*b.N)
	for range b.N {
		input = append(input, chunk...)
	}
	expected := 30 * b.N
	b.ResetTimer()
	c, err := newCanvas(input)
	if err != nil {
		b.Fatalf("Error creating canvas: %s", err)







|







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		"             |     |       |         |   |",
		"             +-----+-------+---------+---+",
		"",
		"",
	}
	chunk := []byte(strings.Join(data, "\n"))
	input := make([]byte, 0, len(chunk)*b.N)
	for i := 0; i < b.N; i++ {
		input = append(input, chunk...)
	}
	expected := 30 * b.N
	b.ResetTimer()
	c, err := newCanvas(input)
	if err != nil {
		b.Fatalf("Error creating canvas: %s", err)

Changes to parser/draw/char.go.

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// license, but later changed to fulfil the needs of Zettelstore. The following
// statements affects the original code as found on
// https://github.com/asciitosvg/asciitosvg (Commit:
// ca82a5ce41e2190a05e07af6e8b3ea4e3256a283, 2020-11-20):
//
// Copyright 2012 - 2018 The ASCIIToSVG Contributors
// All rights reserved.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

package draw

import "unicode"

type char rune







<
<
<







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// license, but later changed to fulfil the needs of Zettelstore. The following
// statements affects the original code as found on
// https://github.com/asciitosvg/asciitosvg (Commit:
// ca82a5ce41e2190a05e07af6e8b3ea4e3256a283, 2020-11-20):
//
// Copyright 2012 - 2018 The ASCIIToSVG Contributors
// All rights reserved.



//-----------------------------------------------------------------------------

package draw

import "unicode"

type char rune

Changes to parser/draw/draw.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

// Package draw provides a parser to create SVG from ASCII drawing.
//
// It is not a parser registered by the general parser framework (directed by
// metadata "syntax" of a zettel). It will be used when a zettel is evaluated.
package draw

import (
	"strconv"

	"zettelstore.de/client.fossil/attrs"
	"zettelstore.de/client.fossil/input"
	"zettelstore.de/z/ast"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/zettel/meta"
)

func init() {
	parser.Register(&parser.Info{
		Name:          meta.SyntaxDraw,








<
<
<












|
|







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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package draw provides a parser to create SVG from ASCII drawing.
//
// It is not a parser registered by the general parser framework (directed by
// metadata "syntax" of a zettel). It will be used when a zettel is evaluated.
package draw

import (
	"strconv"

	"zettelstore.de/client.fossil/attrs"
	"zettelstore.de/z/ast"
	"zettelstore.de/z/input"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/zettel/meta"
)

func init() {
	parser.Register(&parser.Info{
		Name:          meta.SyntaxDraw,

Changes to parser/draw/draw_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

package draw_test

import (
	"testing"

	"zettelstore.de/client.fossil/input"
	"zettelstore.de/z/config"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/zettel/meta"
)

func FuzzParseBlocks(f *testing.F) {
	f.Fuzz(func(t *testing.T, src []byte) {
		t.Parallel()








<
<
<







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|







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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package draw_test

import (
	"testing"

	"zettelstore.de/z/config"
	"zettelstore.de/z/input"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/zettel/meta"
)

func FuzzParseBlocks(f *testing.F) {
	f.Fuzz(func(t *testing.T, src []byte) {
		t.Parallel()

Changes to parser/draw/object.go.

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// license, but later changed to fulfil the needs of Zettelstore. The following
// statements affects the original code as found on
// https://github.com/asciitosvg/asciitosvg (Commit:
// ca82a5ce41e2190a05e07af6e8b3ea4e3256a283, 2020-11-20):
//
// Copyright 2012 - 2018 The ASCIIToSVG Contributors
// All rights reserved.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

package draw

import "fmt"

// object represents one of an open path, a closed path, or text.







<
<
<







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// license, but later changed to fulfil the needs of Zettelstore. The following
// statements affects the original code as found on
// https://github.com/asciitosvg/asciitosvg (Commit:
// ca82a5ce41e2190a05e07af6e8b3ea4e3256a283, 2020-11-20):
//
// Copyright 2012 - 2018 The ASCIIToSVG Contributors
// All rights reserved.



//-----------------------------------------------------------------------------

package draw

import "fmt"

// object represents one of an open path, a closed path, or text.

Changes to parser/draw/point.go.

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// license, but later changed to fulfil the needs of Zettelstore. The following
// statements affects the original code as found on
// https://github.com/asciitosvg/asciitosvg (Commit:
// ca82a5ce41e2190a05e07af6e8b3ea4e3256a283, 2020-11-20):
//
// Copyright 2012 - 2018 The ASCIIToSVG Contributors
// All rights reserved.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

package draw

import "fmt"

// A renderHint suggests ways the SVG renderer may appropriately represent this point.







<
<
<







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// license, but later changed to fulfil the needs of Zettelstore. The following
// statements affects the original code as found on
// https://github.com/asciitosvg/asciitosvg (Commit:
// ca82a5ce41e2190a05e07af6e8b3ea4e3256a283, 2020-11-20):
//
// Copyright 2012 - 2018 The ASCIIToSVG Contributors
// All rights reserved.



//-----------------------------------------------------------------------------

package draw

import "fmt"

// A renderHint suggests ways the SVG renderer may appropriately represent this point.

Changes to parser/draw/svg.go.

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// license, but later changed to fulfil the needs of Zettelstore. The following
// statements affects the original code as found on
// https://github.com/asciitosvg/asciitosvg (Commit:
// ca82a5ce41e2190a05e07af6e8b3ea4e3256a283, 2020-11-20):
//
// Copyright 2012 - 2018 The ASCIIToSVG Contributors
// All rights reserved.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

package draw

import (
	"bytes"
	"fmt"







<
<
<







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// license, but later changed to fulfil the needs of Zettelstore. The following
// statements affects the original code as found on
// https://github.com/asciitosvg/asciitosvg (Commit:
// ca82a5ce41e2190a05e07af6e8b3ea4e3256a283, 2020-11-20):
//
// Copyright 2012 - 2018 The ASCIIToSVG Contributors
// All rights reserved.



//-----------------------------------------------------------------------------

package draw

import (
	"bytes"
	"fmt"

Changes to parser/draw/svg_test.go.

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// license, but later changed to fulfil the needs of Zettelstore. The following
// statements affects the original code as found on
// https://github.com/asciitosvg/asciitosvg (Commit:
// ca82a5ce41e2190a05e07af6e8b3ea4e3256a283, 2020-11-20):
//
// Copyright 2012 - 2018 The ASCIIToSVG Contributors
// All rights reserved.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

package draw

import (
	"strings"
	"testing"







<
<
<







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// license, but later changed to fulfil the needs of Zettelstore. The following
// statements affects the original code as found on
// https://github.com/asciitosvg/asciitosvg (Commit:
// ca82a5ce41e2190a05e07af6e8b3ea4e3256a283, 2020-11-20):
//
// Copyright 2012 - 2018 The ASCIIToSVG Contributors
// All rights reserved.



//-----------------------------------------------------------------------------

package draw

import (
	"strings"
	"testing"

Changes to parser/markdown/markdown.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package markdown provides a parser for markdown.
package markdown

import (
	"bytes"
	"fmt"
	"strconv"
	"strings"

	gm "github.com/yuin/goldmark"
	gmAst "github.com/yuin/goldmark/ast"
	gmText "github.com/yuin/goldmark/text"

	"zettelstore.de/client.fossil/attrs"
	"zettelstore.de/client.fossil/input"
	"zettelstore.de/z/ast"
	"zettelstore.de/z/encoder/textenc"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/zettel/meta"
)

func init() {
	parser.Register(&parser.Info{
		Name:          meta.SyntaxMarkdown,








<
<
<
















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|







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8



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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package markdown provides a parser for markdown.
package markdown

import (
	"bytes"
	"fmt"
	"strconv"
	"strings"

	gm "github.com/yuin/goldmark"
	gmAst "github.com/yuin/goldmark/ast"
	gmText "github.com/yuin/goldmark/text"

	"zettelstore.de/client.fossil/attrs"
	"zettelstore.de/z/ast"
	"zettelstore.de/z/encoder/textenc"
	"zettelstore.de/z/input"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/zettel/meta"
)

func init() {
	parser.Register(&parser.Info{
		Name:          meta.SyntaxMarkdown,
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		Content: p.acceptRawText(node),
	}
}

func (p *mdP) acceptRawText(node gmAst.Node) []byte {
	lines := node.Lines()
	result := make([]byte, 0, 512)
	for i := range lines.Len() {
		s := lines.At(i)
		line := s.Value(p.source)
		if l := len(line); l > 0 {
			if l > 1 && line[l-2] == '\r' && line[l-1] == '\n' {
				line = line[0 : l-2]
			} else if line[l-1] == '\n' || line[l-1] == '\r' {
				line = line[0 : l-1]







|







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		Content: p.acceptRawText(node),
	}
}

func (p *mdP) acceptRawText(node gmAst.Node) []byte {
	lines := node.Lines()
	result := make([]byte, 0, 512)
	for i := 0; i < lines.Len(); i++ {
		s := lines.At(i)
		line := s.Value(p.source)
		if l := len(line); l > 0 {
			if l > 1 && line[l-2] == '\r' && line[l-1] == '\n' {
				line = line[0 : l-2]
			} else if line[l-1] == '\n' || line[l-1] == '\r' {
				line = line[0 : l-1]
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			Attrs:   nil, // TODO
		},
	}
}

func (p *mdP) acceptRawHTML(node *gmAst.RawHTML) ast.InlineSlice {
	segs := make([][]byte, 0, node.Segments.Len())
	for i := range node.Segments.Len() {
		segment := node.Segments.At(i)
		segs = append(segs, segment.Value(p.source))
	}
	return ast.InlineSlice{
		&ast.LiteralNode{
			Kind:    ast.LiteralHTML,
			Attrs:   nil, // TODO: add HTML as language
			Content: bytes.Join(segs, nil),
		},
	}
}







|











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			Attrs:   nil, // TODO
		},
	}
}

func (p *mdP) acceptRawHTML(node *gmAst.RawHTML) ast.InlineSlice {
	segs := make([][]byte, 0, node.Segments.Len())
	for i := 0; i < node.Segments.Len(); i++ {
		segment := node.Segments.At(i)
		segs = append(segs, segment.Value(p.source))
	}
	return ast.InlineSlice{
		&ast.LiteralNode{
			Kind:    ast.LiteralHTML,
			Attrs:   nil, // TODO: add HTML as language
			Content: bytes.Join(segs, nil),
		},
	}
}

Changes to parser/markdown/markdown_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package markdown

import (
	"strings"
	"testing"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package markdown

import (
	"strings"
	"testing"

Changes to parser/none/none.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package none provides a none-parser, e.g. for zettel with just metadata.
package none

import (
	"zettelstore.de/client.fossil/input"
	"zettelstore.de/z/ast"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/zettel/meta"
)

func init() {
	parser.Register(&parser.Info{
		Name:          meta.SyntaxNone,








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package none provides a none-parser, e.g. for zettel with just metadata.
package none

import (
	"zettelstore.de/z/ast"
	"zettelstore.de/z/input"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/zettel/meta"
)

func init() {
	parser.Register(&parser.Info{
		Name:          meta.SyntaxNone,

Changes to parser/parser.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package parser provides a generic interface to a range of different parsers.
package parser

import (
	"context"
	"fmt"
	"strings"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/input"
	"zettelstore.de/z/ast"
	"zettelstore.de/z/config"
	"zettelstore.de/z/parser/cleaner"
	"zettelstore.de/z/zettel"
	"zettelstore.de/z/zettel/meta"
)

// Info describes a single parser.
//








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package parser provides a generic interface to a range of different parsers.
package parser

import (
	"context"
	"fmt"
	"strings"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/z/ast"
	"zettelstore.de/z/config"
	"zettelstore.de/z/input"
	"zettelstore.de/z/parser/cleaner"
	"zettelstore.de/z/zettel"
	"zettelstore.de/z/zettel/meta"
)

// Info describes a single parser.
//
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func IsASTParser(syntax string) bool {
	pi, ok := registry[syntax]
	if !ok {
		return false
	}
	return pi.IsASTParser
}










// IsImageFormat returns whether the given syntax is known to be an image format.
func IsImageFormat(syntax string) bool {
	pi, ok := registry[syntax]
	if !ok {
		return false
	}
	return pi.IsImageFormat
}

// ParseBlocks parses some input and returns a slice of block nodes.
func ParseBlocks(inp *input.Input, m *meta.Meta, syntax string, hi config.HTMLInsecurity) ast.BlockSlice {



	bs := Get(syntax).ParseBlocks(inp, m, syntax)
	cleaner.CleanBlockSlice(&bs, hi.AllowHTML(syntax))
	return bs
}

// ParseInlines parses some input and returns a slice of inline nodes.
func ParseInlines(inp *input.Input, syntax string) ast.InlineSlice {







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func IsASTParser(syntax string) bool {
	pi, ok := registry[syntax]
	if !ok {
		return false
	}
	return pi.IsASTParser
}

// IsTextFormat returns whether the given syntax is known to be a text format.
func IsTextFormat(syntax string) bool {
	pi, ok := registry[syntax]
	if !ok {
		return false
	}
	return pi.IsTextFormat
}

// IsImageFormat returns whether the given syntax is known to be an image format.
func IsImageFormat(syntax string) bool {
	pi, ok := registry[syntax]
	if !ok {
		return false
	}
	return pi.IsImageFormat
}

// ParseBlocks parses some input and returns a slice of block nodes.
func ParseBlocks(inp *input.Input, m *meta.Meta, syntax string, hi config.HTMLInsecurity) ast.BlockSlice {
	return parseBlocksAndClean(inp, m, syntax, hi)
}
func parseBlocksAndClean(inp *input.Input, m *meta.Meta, syntax string, hi config.HTMLInsecurity) ast.BlockSlice {
	bs := Get(syntax).ParseBlocks(inp, m, syntax)
	cleaner.CleanBlockSlice(&bs, hi.AllowHTML(syntax))
	return bs
}

// ParseInlines parses some input and returns a slice of inline nodes.
func ParseInlines(inp *input.Input, syntax string) ast.InlineSlice {
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func ParseZettel(ctx context.Context, zettel zettel.Zettel, syntax string, rtConfig config.Config) *ast.ZettelNode {
	m := zettel.Meta
	inhMeta := m
	if rtConfig != nil {
		inhMeta = rtConfig.AddDefaultValues(ctx, inhMeta)
	}
	if syntax == "" {
		syntax = inhMeta.GetDefault(api.KeySyntax, meta.DefaultSyntax)
	}
	parseMeta := inhMeta
	if syntax == meta.SyntaxNone {
		parseMeta = m
	}

	hi := config.NoHTML
	if rtConfig != nil {
		hi = rtConfig.GetHTMLInsecurity()
	}
	return &ast.ZettelNode{
		Meta:    m,
		Content: zettel.Content,
		Zid:     m.Zid,
		InhMeta: inhMeta,
		Ast:     ParseBlocks(input.NewInput(zettel.Content.AsBytes()), parseMeta, syntax, hi),
		Syntax:  syntax,
	}
}







|















|



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func ParseZettel(ctx context.Context, zettel zettel.Zettel, syntax string, rtConfig config.Config) *ast.ZettelNode {
	m := zettel.Meta
	inhMeta := m
	if rtConfig != nil {
		inhMeta = rtConfig.AddDefaultValues(ctx, inhMeta)
	}
	if syntax == "" {
		syntax, _ = inhMeta.Get(api.KeySyntax)
	}
	parseMeta := inhMeta
	if syntax == meta.SyntaxNone {
		parseMeta = m
	}

	hi := config.NoHTML
	if rtConfig != nil {
		hi = rtConfig.GetHTMLInsecurity()
	}
	return &ast.ZettelNode{
		Meta:    m,
		Content: zettel.Content,
		Zid:     m.Zid,
		InhMeta: inhMeta,
		Ast:     parseBlocksAndClean(input.NewInput(zettel.Content.AsBytes()), parseMeta, syntax, hi),
		Syntax:  syntax,
	}
}

Changes to parser/parser_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package parser_test

import (
	"testing"









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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package parser_test

import (
	"testing"

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)

func TestParserType(t *testing.T) {
	syntaxSet := strfun.NewSet(parser.GetSyntaxes()...)
	testCases := []struct {
		syntax string
		ast    bool

		image  bool
	}{
		{meta.SyntaxHTML, false, false},
		{meta.SyntaxCSS, false, false},
		{meta.SyntaxDraw, true, false},
		{meta.SyntaxGif, false, true},
		{meta.SyntaxJPEG, false, true},
		{meta.SyntaxJPG, false, true},
		{meta.SyntaxMarkdown, true, false},
		{meta.SyntaxMD, true, false},
		{meta.SyntaxNone, false, false},
		{meta.SyntaxPlain, false, false},
		{meta.SyntaxPNG, false, true},
		{meta.SyntaxSVG, false, true},
		{meta.SyntaxSxn, false, false},
		{meta.SyntaxText, false, false},
		{meta.SyntaxTxt, false, false},
		{meta.SyntaxWebp, false, true},
		{meta.SyntaxZmk, true, false},
	}
	for _, tc := range testCases {
		delete(syntaxSet, tc.syntax)
		if got := parser.IsASTParser(tc.syntax); got != tc.ast {
			t.Errorf("Syntax %q is AST: %v, but got %v", tc.syntax, tc.ast, got)
		}



		if got := parser.IsImageFormat(tc.syntax); got != tc.image {
			t.Errorf("Syntax %q is image: %v, but got %v", tc.syntax, tc.image, got)
		}
	}
	for syntax := range syntaxSet {
		t.Errorf("Forgot to test syntax %q", syntax)
	}
}







>


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)

func TestParserType(t *testing.T) {
	syntaxSet := strfun.NewSet(parser.GetSyntaxes()...)
	testCases := []struct {
		syntax string
		ast    bool
		text   bool
		image  bool
	}{
		{meta.SyntaxHTML, false, true, false},
		{meta.SyntaxCSS, false, true, false},
		{meta.SyntaxDraw, true, true, false},
		{meta.SyntaxGif, false, false, true},
		{meta.SyntaxJPEG, false, false, true},
		{meta.SyntaxJPG, false, false, true},
		{meta.SyntaxMarkdown, true, true, false},
		{meta.SyntaxMD, true, true, false},
		{meta.SyntaxNone, false, false, false},
		{meta.SyntaxPlain, false, true, false},
		{meta.SyntaxPNG, false, false, true},
		{meta.SyntaxSVG, false, true, true},
		{meta.SyntaxSxn, false, true, false},
		{meta.SyntaxText, false, true, false},
		{meta.SyntaxTxt, false, true, false},
		{meta.SyntaxWebp, false, false, true},
		{meta.SyntaxZmk, true, true, false},
	}
	for _, tc := range testCases {
		delete(syntaxSet, tc.syntax)
		if got := parser.IsASTParser(tc.syntax); got != tc.ast {
			t.Errorf("Syntax %q is AST: %v, but got %v", tc.syntax, tc.ast, got)
		}
		if got := parser.IsTextFormat(tc.syntax); got != tc.text {
			t.Errorf("Syntax %q is text: %v, but got %v", tc.syntax, tc.text, got)
		}
		if got := parser.IsImageFormat(tc.syntax); got != tc.image {
			t.Errorf("Syntax %q is image: %v, but got %v", tc.syntax, tc.image, got)
		}
	}
	for syntax := range syntaxSet {
		t.Errorf("Forgot to test syntax %q", syntax)
	}
}

Changes to parser/plain/plain.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package plain provides a parser for plain text data.
package plain

import (
	"bytes"
	"strings"

	"zettelstore.de/client.fossil/attrs"
	"zettelstore.de/client.fossil/input"
	"zettelstore.de/sx.fossil/sxreader"
	"zettelstore.de/z/ast"

	"zettelstore.de/z/parser"
	"zettelstore.de/z/zettel/meta"
)

func init() {
	parser.Register(&parser.Info{
		Name:          meta.SyntaxTxt,








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>







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package plain provides a parser for plain text data.
package plain

import (
	"bytes"
	"strings"

	"zettelstore.de/client.fossil/attrs"
	"zettelstore.de/sx.fossil/sxbuiltins"
	"zettelstore.de/sx.fossil/sxreader"
	"zettelstore.de/z/ast"
	"zettelstore.de/z/input"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/zettel/meta"
)

func init() {
	parser.Register(&parser.Info{
		Name:          meta.SyntaxTxt,
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	}
	// TODO: check proper end </svg>
	return svgSrc
}

func parseSxnBlocks(inp *input.Input, _ *meta.Meta, syntax string) ast.BlockSlice {
	rd := sxreader.MakeReader(bytes.NewReader(inp.Src))
	_, err := rd.ReadAll()

	result := ast.BlockSlice{
		&ast.VerbatimNode{
			Kind:    ast.VerbatimProg,
			Attrs:   attrs.Attributes{"": syntax},
			Content: inp.ScanLineContent(),
		},
	}
	if err != nil {
		result = append(result, ast.CreateParaNode(&ast.TextNode{
			Text: err.Error(),
		}))











	}
	return result
}

func parseSxnInlines(inp *input.Input, syntax string) ast.InlineSlice {
	inp.SkipToEOL()
	return ast.InlineSlice{&ast.LiteralNode{
		Kind:    ast.LiteralProg,
		Attrs:   attrs.Attributes{"": syntax},
		Content: append([]byte(nil), inp.Src[0:inp.Pos]...),
	}}
}







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	}
	// TODO: check proper end </svg>
	return svgSrc
}

func parseSxnBlocks(inp *input.Input, _ *meta.Meta, syntax string) ast.BlockSlice {
	rd := sxreader.MakeReader(bytes.NewReader(inp.Src))
	objs, err := rd.ReadAll()
	if err != nil {
		return ast.BlockSlice{
			&ast.VerbatimNode{
				Kind:    ast.VerbatimProg,
				Attrs:   attrs.Attributes{"": syntax},
				Content: inp.ScanLineContent(),
			},


			ast.CreateParaNode(&ast.TextNode{
				Text: err.Error(),
			}),
		}
	}
	result := make(ast.BlockSlice, len(objs))
	for i, obj := range objs {
		var buf bytes.Buffer
		sxbuiltins.Print(&buf, obj)
		result[i] = &ast.VerbatimNode{
			Kind:    ast.VerbatimProg,
			Attrs:   attrs.Attributes{"": syntax},
			Content: buf.Bytes(),
		}
	}
	return result
}

func parseSxnInlines(inp *input.Input, syntax string) ast.InlineSlice {
	inp.SkipToEOL()
	return ast.InlineSlice{&ast.LiteralNode{
		Kind:    ast.LiteralProg,
		Attrs:   attrs.Attributes{"": syntax},
		Content: append([]byte(nil), inp.Src[0:inp.Pos]...),
	}}
}

Changes to parser/zettelmark/block.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package zettelmark

import (
	"fmt"

	"zettelstore.de/client.fossil/input"
	"zettelstore.de/z/ast"
)

// parseBlockSlice parses a sequence of blocks.
func (cp *zmkP) parseBlockSlice() ast.BlockSlice {
	inp := cp.inp
	var lastPara *ast.ParaNode
	bs := ast.BlockSlice{}








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package zettelmark

import (
	"fmt"

	"zettelstore.de/z/ast"
	"zettelstore.de/z/input"
)

// parseBlockSlice parses a sequence of blocks.
func (cp *zmkP) parseBlockSlice() ast.BlockSlice {
	inp := cp.inp
	var lastPara *ast.ParaNode
	bs := ast.BlockSlice{}
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		}
	}
	return ln, newLnCount
}

func (cp *zmkP) cleanupParsedNestedList(newLnCount int) (res ast.BlockNode, success bool) {
	listDepth := len(cp.lists)
	for i := range newLnCount {
		childPos := listDepth - i - 1
		parentPos := childPos - 1
		if parentPos < 0 {
			return cp.lists[0], true
		}
		if prevItems := cp.lists[parentPos].Items; len(prevItems) > 0 {
			lastItem := len(prevItems) - 1







|







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		}
	}
	return ln, newLnCount
}

func (cp *zmkP) cleanupParsedNestedList(newLnCount int) (res ast.BlockNode, success bool) {
	listDepth := len(cp.lists)
	for i := 0; i < newLnCount; i++ {
		childPos := listDepth - i - 1
		parentPos := childPos - 1
		if parentPos < 0 {
			return cp.lists[0], true
		}
		if prevItems := cp.lists[parentPos].Items; len(prevItems) > 0 {
			lastItem := len(prevItems) - 1

Changes to parser/zettelmark/inline.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package zettelmark

import (
	"bytes"
	"fmt"
	"strings"

	"zettelstore.de/client.fossil/attrs"
	"zettelstore.de/client.fossil/input"
	"zettelstore.de/z/ast"
	"zettelstore.de/z/zettel/meta"
)

// parseInlineSlice parses a sequence of Inlines until EOS.
func (cp *zmkP) parseInlineSlice() (ins ast.InlineSlice) {
	inp := cp.inp
	for inp.Ch != input.EOS {








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package zettelmark

import (
	"bytes"
	"fmt"
	"strings"

	"zettelstore.de/client.fossil/attrs"
	"zettelstore.de/z/ast"
	"zettelstore.de/z/input"
	"zettelstore.de/z/zettel/meta"
)

// parseInlineSlice parses a sequence of Inlines until EOS.
func (cp *zmkP) parseInlineSlice() (ins ast.InlineSlice) {
	inp := cp.inp
	for inp.Ch != input.EOS {

Changes to parser/zettelmark/node.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package zettelmark

import "zettelstore.de/z/ast"

// Internal nodes for parsing zettelmark. These will be removed in








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package zettelmark

import "zettelstore.de/z/ast"

// Internal nodes for parsing zettelmark. These will be removed in

Changes to parser/zettelmark/post-processor.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package zettelmark

import (
	"strings"









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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package zettelmark

import (
	"strings"

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		}
	}
}

func (pp *postProcessor) visitTable(tn *ast.TableNode) {
	width := tableWidth(tn)
	tn.Align = make([]ast.Alignment, width)
	for i := range width {
		tn.Align[i] = ast.AlignDefault
	}
	if len(tn.Rows) > 0 && isHeaderRow(tn.Rows[0]) {
		tn.Header = tn.Rows[0]
		tn.Rows = tn.Rows[1:]
		pp.visitTableHeader(tn)
	}







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		}
	}
}

func (pp *postProcessor) visitTable(tn *ast.TableNode) {
	width := tableWidth(tn)
	tn.Align = make([]ast.Alignment, width)
	for i := 0; i < width; i++ {
		tn.Align[i] = ast.AlignDefault
	}
	if len(tn.Rows) > 0 && isHeaderRow(tn.Rows[0]) {
		tn.Header = tn.Rows[0]
		tn.Rows = tn.Rows[1:]
		pp.visitTableHeader(tn)
	}

Changes to parser/zettelmark/zettelmark.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package zettelmark provides a parser for zettelmarkup.
package zettelmark

import (
	"strings"
	"unicode"

	"zettelstore.de/client.fossil/attrs"
	"zettelstore.de/client.fossil/input"
	"zettelstore.de/z/ast"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/zettel/meta"
)

func init() {
	parser.Register(&parser.Info{
		Name:          meta.SyntaxZmk,








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package zettelmark provides a parser for zettelmarkup.
package zettelmark

import (
	"strings"
	"unicode"

	"zettelstore.de/client.fossil/attrs"
	"zettelstore.de/z/ast"
	"zettelstore.de/z/input"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/zettel/meta"
)

func init() {
	parser.Register(&parser.Info{
		Name:          meta.SyntaxZmk,

Changes to parser/zettelmark/zettelmark_fuzz_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

package zettelmark_test

import (
	"testing"

	"zettelstore.de/client.fossil/input"
	"zettelstore.de/z/config"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/zettel/meta"
)

func FuzzParseBlocks(f *testing.F) {
	f.Fuzz(func(t *testing.T, src []byte) {
		t.Parallel()








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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package zettelmark_test

import (
	"testing"

	"zettelstore.de/z/config"
	"zettelstore.de/z/input"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/zettel/meta"
)

func FuzzParseBlocks(f *testing.F) {
	f.Fuzz(func(t *testing.T, src []byte) {
		t.Parallel()

Changes to parser/zettelmark/zettelmark_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package zettelmark_test provides some tests for the zettelmarkup parser.
package zettelmark_test

import (
	"fmt"
	"strings"
	"testing"

	"zettelstore.de/client.fossil/attrs"
	"zettelstore.de/client.fossil/input"
	"zettelstore.de/z/ast"
	"zettelstore.de/z/config"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/zettel/meta"
)

type TestCase struct{ source, want string }
type TestCases []TestCase









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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package zettelmark_test provides some tests for the zettelmarkup parser.
package zettelmark_test

import (
	"fmt"
	"strings"
	"testing"

	"zettelstore.de/client.fossil/attrs"
	"zettelstore.de/z/ast"
	"zettelstore.de/z/config"
	"zettelstore.de/z/input"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/zettel/meta"
)

type TestCase struct{ source, want string }
type TestCases []TestCase

Changes to query/compiled.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2023-present Detlef Stern
//-----------------------------------------------------------------------------

package query

import (
	"math/rand/v2"
	"sort"

	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

// Compiled is a compiled query, to be used in a Box








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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package query

import (
	"math/rand"
	"sort"

	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

// Compiled is a compiled query, to be used in a Box
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	}
	if limit := c.limit; limit > 0 && limit < count {
		count = limit
		c.limit = 0
	}

	order := make([]int, len(metaList))
	for i := range len(metaList) {
		order[i] = i
	}
	rnd := c.newRandom()
	picked := make([]int, count)
	for i := range count {
		last := len(order) - i
		n := rnd.IntN(last)
		picked[i] = order[n]
		order[n] = order[last-1]
	}
	order = nil
	sort.Ints(picked)
	result := make([]*meta.Meta, count)
	for i, p := range picked {







|




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	}
	if limit := c.limit; limit > 0 && limit < count {
		count = limit
		c.limit = 0
	}

	order := make([]int, len(metaList))
	for i := 0; i < len(metaList); i++ {
		order[i] = i
	}
	rnd := c.newRandom()
	picked := make([]int, count)
	for i := 0; i < count; i++ {
		last := len(order) - i
		n := rnd.Intn(last)
		picked[i] = order[n]
		order[n] = order[last-1]
	}
	order = nil
	sort.Ints(picked)
	result := make([]*meta.Meta, count)
	for i, p := range picked {
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	)
	return metaList
}

func (c *Compiled) newRandom() *rand.Rand {
	seed := c.seed
	if seed <= 0 {
		seed = rand.IntN(10000) + 10001
	}
	return rand.New(rand.NewPCG(uint64(seed), uint64(seed)))
}

func limitElements(metaList []*meta.Meta, limit int) []*meta.Meta {
	if limit > 0 && limit < len(metaList) {
		return metaList[:limit]
	}
	return metaList
}

func sortMetaByZid(metaList []*meta.Meta) []*meta.Meta {
	sort.Slice(metaList, func(i, j int) bool { return metaList[i].Zid > metaList[j].Zid })
	return metaList
}







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	)
	return metaList
}

func (c *Compiled) newRandom() *rand.Rand {
	seed := c.seed
	if seed <= 0 {
		seed = rand.Intn(10000) + 10001
	}
	return rand.New(rand.NewSource(int64(seed)))
}

func limitElements(metaList []*meta.Meta, limit int) []*meta.Meta {
	if limit > 0 && limit < len(metaList) {
		return metaList[:limit]
	}
	return metaList
}

func sortMetaByZid(metaList []*meta.Meta) []*meta.Meta {
	sort.Slice(metaList, func(i, j int) bool { return metaList[i].Zid > metaList[j].Zid })
	return metaList
}

Changes to query/context.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2023-present Detlef Stern
//-----------------------------------------------------------------------------

package query

import (
	"container/heap"
	"context"
	"math"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

// ContextSpec contains all specification values for calculating a context.
type ContextSpec struct {
	Direction ContextDirection
	MaxCost   int
	MaxCount  int
	Full      bool
}

// ContextDirection specifies the direction a context should be calculated.
type ContextDirection uint8

const (
	ContextDirBoth ContextDirection = iota
	ContextDirForward
	ContextDirBackward
)

// ContextPort is the collection of box methods needed by this directive.
type ContextPort interface {
	GetMeta(ctx context.Context, zid id.Zid) (*meta.Meta, error)
	SelectMeta(ctx context.Context, metaSeq []*meta.Meta, q *Query) ([]*meta.Meta, error)
}

func (spec *ContextSpec) Print(pe *PrintEnv) {
	pe.printSpace()
	pe.writeString(api.ContextDirective)
	if spec.Full {
		pe.printSpace()
		pe.writeString(api.FullDirective)
	}
	switch spec.Direction {
	case ContextDirBackward:
		pe.printSpace()
		pe.writeString(api.BackwardDirective)
	case ContextDirForward:
		pe.printSpace()
		pe.writeString(api.ForwardDirective)
	}
	pe.printPosInt(api.CostDirective, spec.MaxCost)
	pe.printPosInt(api.MaxDirective, spec.MaxCount)
}

func (spec *ContextSpec) Execute(ctx context.Context, startSeq []*meta.Meta, port ContextPort) []*meta.Meta {
	maxCost := float64(spec.MaxCost)
	if maxCost <= 0 {
		maxCost = 17
	}
	maxCount := spec.MaxCount
	if maxCount <= 0 {
		maxCount = 200
	}








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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package query

import (
	"container/heap"
	"context"


	"zettelstore.de/client.fossil/api"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

// ContextSpec contains all specification values for calculating a context.
type ContextSpec struct {
	Direction ContextDirection
	MaxCost   int
	MaxCount  int

}

// ContextDirection specifies the direction a context should be calculated.
type ContextDirection uint8

const (
	ContextDirBoth ContextDirection = iota
	ContextDirForward
	ContextDirBackward
)

// ContextPort is the collection of box methods needed by this directive.
type ContextPort interface {
	GetMeta(ctx context.Context, zid id.Zid) (*meta.Meta, error)
	SelectMeta(ctx context.Context, metaSeq []*meta.Meta, q *Query) ([]*meta.Meta, error)
}

func (spec *ContextSpec) Print(pe *PrintEnv) {
	pe.printSpace()
	pe.writeString(api.ContextDirective)




	switch spec.Direction {
	case ContextDirBackward:
		pe.printSpace()
		pe.writeString(api.BackwardDirective)
	case ContextDirForward:
		pe.printSpace()
		pe.writeString(api.ForwardDirective)
	}
	pe.printPosInt(api.CostDirective, spec.MaxCost)
	pe.printPosInt(api.MaxDirective, spec.MaxCount)
}

func (spec *ContextSpec) Execute(ctx context.Context, startSeq []*meta.Meta, port ContextPort) []*meta.Meta {
	maxCost := spec.MaxCost
	if maxCost <= 0 {
		maxCost = 17
	}
	maxCount := spec.MaxCount
	if maxCount <= 0 {
		maxCount = 200
	}
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			break
		}
		result = append(result, m)

		for _, p := range m.ComputedPairsRest() {
			tasks.addPair(ctx, p.Key, p.Value, cost, isBackward, isForward)
		}
		if !spec.Full {
			continue
		}
		if tags, found := m.GetList(api.KeyTags); found {

			tasks.addTags(ctx, tags, cost)

		}
	}
	return result
}

type ztlCtxItem struct {
	cost float64
	meta *meta.Meta
}
type ztlCtxQueue []ztlCtxItem

func (q ztlCtxQueue) Len() int           { return len(q) }
func (q ztlCtxQueue) Less(i, j int) bool { return q[i].cost < q[j].cost }
func (q ztlCtxQueue) Swap(i, j int)      { q[i], q[j] = q[j], q[i] }
func (q *ztlCtxQueue) Push(x any)        { *q = append(*q, x.(ztlCtxItem)) }
func (q *ztlCtxQueue) Pop() any {
	old := *q
	n := len(old)
	item := old[n-1]
	old[n-1].meta = nil // avoid memory leak
	*q = old[0 : n-1]
	return item
}

type contextTask struct {
	port     ContextPort
	seen     id.Set
	queue    ztlCtxQueue
	maxCost  float64
	limit    int
	tagMetas map[string][]*meta.Meta
	tagZids  map[string]id.Set     // just the zids of tagMetas
	metaZid  map[id.Zid]*meta.Meta // maps zid to meta for all meta retrieved with tags
}

func newQueue(startSeq []*meta.Meta, maxCost float64, limit int, port ContextPort) *contextTask {
	result := &contextTask{
		port:     port,
		seen:     id.NewSet(),
		maxCost:  maxCost,
		limit:    limit,
		tagMetas: make(map[string][]*meta.Meta),
		tagZids:  make(map[string]id.Set),
		metaZid:  make(map[id.Zid]*meta.Meta),
	}

	queue := make(ztlCtxQueue, 0, len(startSeq))
	for _, m := range startSeq {
		queue = append(queue, ztlCtxItem{cost: 1, meta: m})
	}
	heap.Init(&queue)
	result.queue = queue
	return result
}

func (ct *contextTask) addPair(ctx context.Context, key, value string, curCost float64, isBackward, isForward bool) {
	if key == api.KeyBack {
		return
	}
	newCost := curCost + contextCost(key)
	if key == api.KeyBackward {
		if isBackward {
			ct.addIDSet(ctx, newCost, value)







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			break
		}
		result = append(result, m)

		for _, p := range m.ComputedPairsRest() {
			tasks.addPair(ctx, p.Key, p.Value, cost, isBackward, isForward)
		}



		if tags, found := m.GetList(api.KeyTags); found {
			for _, tag := range tags {
				tasks.addSameTag(ctx, tag, cost)
			}
		}
	}
	return result
}

type ztlCtxItem struct {
	cost int
	meta *meta.Meta
}
type ztlCtxQueue []ztlCtxItem

func (q ztlCtxQueue) Len() int           { return len(q) }
func (q ztlCtxQueue) Less(i, j int) bool { return q[i].cost < q[j].cost }
func (q ztlCtxQueue) Swap(i, j int)      { q[i], q[j] = q[j], q[i] }
func (q *ztlCtxQueue) Push(x any)        { *q = append(*q, x.(ztlCtxItem)) }
func (q *ztlCtxQueue) Pop() any {
	old := *q
	n := len(old)
	item := old[n-1]
	old[n-1].meta = nil // avoid memory leak
	*q = old[0 : n-1]
	return item
}

type contextTask struct {
	port    ContextPort
	seen    id.Set
	queue   ztlCtxQueue
	maxCost int
	limit   int
	tagCost map[string][]*meta.Meta


}

func newQueue(startSeq []*meta.Meta, maxCost, limit int, port ContextPort) *contextTask {
	result := &contextTask{
		port:    port,
		seen:    id.NewSet(),
		maxCost: maxCost,
		limit:   limit,
		tagCost: make(map[string][]*meta.Meta, 1024),


	}

	queue := make(ztlCtxQueue, 0, len(startSeq))
	for _, m := range startSeq {
		queue = append(queue, ztlCtxItem{cost: 1, meta: m})
	}
	heap.Init(&queue)
	result.queue = queue
	return result
}

func (ct *contextTask) addPair(ctx context.Context, key, value string, curCost int, isBackward, isForward bool) {
	if key == api.KeyBack {
		return
	}
	newCost := curCost + contextCost(key)
	if key == api.KeyBackward {
		if isBackward {
			ct.addIDSet(ctx, newCost, value)
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	if t := meta.Type(key); t == meta.TypeID {
		ct.addID(ctx, newCost, value)
	} else if t == meta.TypeIDSet {
		ct.addIDSet(ctx, newCost, value)
	}
}

func contextCost(key string) float64 {
	switch key {
	case api.KeyFolge, api.KeyPrecursor:
		return 1
	case api.KeySubordinates, api.KeySuperior:
		return 1.5
	case api.KeySuccessors, api.KeyPredecessor:

		return 7
	}
	return 2
}

func (ct *contextTask) addID(ctx context.Context, newCost float64, value string) {



	if zid, errParse := id.Parse(value); errParse == nil {
		if m, errGetMeta := ct.port.GetMeta(ctx, zid); errGetMeta == nil {
			ct.addMeta(m, newCost)
		}
	}
}






func (ct *contextTask) addMeta(m *meta.Meta, newCost float64) {
	// If len(zc.seen) <= 1, the initial zettel is processed. In this case allow all
	// other zettel that are directly reachable, without taking the cost into account.
	// Of course, the limit ist still relevant.
	if !ct.hasLimit() && (len(ct.seen) <= 1 || ct.maxCost == 0 || newCost <= ct.maxCost) {
		if _, found := ct.seen[m.Zid]; !found {
			heap.Push(&ct.queue, ztlCtxItem{cost: newCost, meta: m})
		}
	}
}

func (ct *contextTask) addIDSet(ctx context.Context, newCost float64, value string) {
	elems := meta.ListFromValue(value)
	refCost := referenceCost(newCost, len(elems))
	for _, val := range elems {
		ct.addID(ctx, refCost, val)
	}
}

func referenceCost(baseCost float64, numReferences int) float64 {

	nRefs := float64(numReferences)
	return nRefs*math.Log2(nRefs+1) + baseCost
}

func (ct *contextTask) addTags(ctx context.Context, tags []string, baseCost float64) {
	var zidSet id.Set
	for _, tag := range tags {
		zs := ct.updateTagData(ctx, tag)
		zidSet = zidSet.Copy(zs)
	}
	for _, zid := range zidSet.Sorted() { // .Sorted() to stay deterministic
		minCost := math.MaxFloat64
		costFactor := 1.1
		for _, tag := range tags {
			tagZids := ct.tagZids[tag]
			if tagZids.Contains(zid) {
				cost := tagCost(baseCost, len(tagZids))
				if cost < minCost {
					minCost = cost
				}

				costFactor /= 1.1
			}
		}
		ct.addMeta(ct.metaZid[zid], minCost*costFactor)
	}
}

func (ct *contextTask) updateTagData(ctx context.Context, tag string) id.Set {
	if _, found := ct.tagMetas[tag]; found {
		return ct.tagZids[tag]
	}



	q := Parse(api.KeyTags + api.SearchOperatorHas + tag + " ORDER REVERSE " + api.KeyID)
	ml, err := ct.port.SelectMeta(ctx, nil, q)
	if err != nil {
		ml = nil

	}
	ct.tagMetas[tag] = ml
	zids := id.NewSetCap(len(ml))
	for _, m := range ml {

		zid := m.Zid
		zids = zids.Add(zid)
		if _, found := ct.metaZid[zid]; !found {
			ct.metaZid[zid] = m
		}


	}
	ct.tagZids[tag] = zids
	return zids
}

func tagCost(baseCost float64, numTags int) float64 {
	nTags := float64(numTags)
	return nTags*math.Log2(nTags+1) + baseCost
}



func (ct *contextTask) next() (*meta.Meta, float64) {
	if ct.hasLimit() {
		return nil, -1
	}
	for len(ct.queue) > 0 {
		item := heap.Pop(&ct.queue).(ztlCtxItem)
		m := item.meta
		zid := m.Zid







|



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	if t := meta.Type(key); t == meta.TypeID {
		ct.addID(ctx, newCost, value)
	} else if t == meta.TypeIDSet {
		ct.addIDSet(ctx, newCost, value)
	}
}

func contextCost(key string) int {
	switch key {
	case api.KeyFolge, api.KeyPrecursor:
		return 1


	case api.KeySuccessors, api.KeyPredecessor,
		api.KeySubordinates, api.KeySuperior:
		return 2
	}
	return 3
}

func (ct *contextTask) addID(ctx context.Context, newCost int, value string) {
	if ct.costMaxed(newCost) {
		return
	}
	if zid, errParse := id.Parse(value); errParse == nil {
		if m, errGetMeta := ct.port.GetMeta(ctx, zid); errGetMeta == nil {
			ct.addMeta(m, newCost)
		}
	}
}
func (ct *contextTask) addMeta(m *meta.Meta, newCost int) {
	if _, found := ct.seen[m.Zid]; !found {
		heap.Push(&ct.queue, ztlCtxItem{cost: newCost, meta: m})
	}
}

func (ct *contextTask) costMaxed(newCost int) bool {
	// If len(zc.seen) <= 1, the initial zettel is processed. In this case allow all
	// other zettel that are directly reachable, without taking the cost into account.
	// Of course, the limit ist still relevant.
	return (len(ct.seen) > 1 && ct.maxCost > 0 && newCost > ct.maxCost) || ct.hasLimit()


}



func (ct *contextTask) addIDSet(ctx context.Context, newCost int, value string) {
	elems := meta.ListFromValue(value)
	refCost := referenceCost(newCost, len(elems))
	for _, val := range elems {
		ct.addID(ctx, refCost, val)
	}
}

func referenceCost(baseCost int, numReferences int) int {
	switch {
	case numReferences < 5:
		return baseCost + 1

	case numReferences < 9:







		return baseCost * 2
	case numReferences < 17:



		return baseCost * 3
	case numReferences < 33:
		return baseCost * 4

	case numReferences < 65:
		return baseCost * 5
	}

	return baseCost * numReferences / 8
}






func (ct *contextTask) addSameTag(ctx context.Context, tag string, baseCost int) {
	tagMetas, found := ct.tagCost[tag]
	if !found {
		q := Parse(api.KeyTags + api.SearchOperatorHas + tag + " ORDER REVERSE " + api.KeyID)
		ml, err := ct.port.SelectMeta(ctx, nil, q)
		if err != nil {

			return
		}
		tagMetas = ml

		ct.tagCost[tag] = ml
	}
	cost := tagCost(baseCost, len(tagMetas))

	if ct.costMaxed(cost) {
		return
	}
	for _, m := range tagMetas {
		ct.addMeta(m, cost)
	}


}

func tagCost(baseCost, numTags int) int {
	if numTags < 8 {
		return baseCost + numTags/2
	}
	return (baseCost + 2) * (numTags / 4)
}

func (ct *contextTask) next() (*meta.Meta, int) {
	if ct.hasLimit() {
		return nil, -1
	}
	for len(ct.queue) > 0 {
		item := heap.Pop(&ct.queue).(ztlCtxItem)
		m := item.meta
		zid := m.Zid

Changes to query/parser.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

package query

import (
	"strconv"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/input"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

// Parse the query specification and return a Query object.
func Parse(spec string) (q *Query) { return q.Parse(spec) }









<
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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package query

import (
	"strconv"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/z/input"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

// Parse the query specification and return a Query object.
func Parse(spec string) (q *Query) { return q.Parse(spec) }

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	spec := &ContextSpec{}
	for {
		ps.skipSpace()
		if ps.mustStop() {
			break
		}
		pos := inp.Pos
		if ps.acceptSingleKw(api.FullDirective) {
			spec.Full = true
			continue
		}
		inp.SetPos(pos)
		if ps.acceptSingleKw(api.BackwardDirective) {
			spec.Direction = ContextDirBackward
			continue
		}
		inp.SetPos(pos)
		if ps.acceptSingleKw(api.ForwardDirective) {
			spec.Direction = ContextDirForward







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	spec := &ContextSpec{}
	for {
		ps.skipSpace()
		if ps.mustStop() {
			break
		}
		pos := inp.Pos





		if ps.acceptSingleKw(api.BackwardDirective) {
			spec.Direction = ContextDirBackward
			continue
		}
		inp.SetPos(pos)
		if ps.acceptSingleKw(api.ForwardDirective) {
			spec.Direction = ContextDirForward

Changes to query/parser_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

package query_test

import (
	"testing"









<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package query_test

import (
	"testing"

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		{"1 ITEMS", "00000000000001 ITEMS"},
		{"ITEMS", "ITEMS"},

		{"CONTEXT", "CONTEXT"}, {"CONTEXT a", "CONTEXT a"},
		{"0 CONTEXT", "0 CONTEXT"}, {"1 CONTEXT", "00000000000001 CONTEXT"},
		{"00000000000001 CONTEXT", "00000000000001 CONTEXT"},
		{"100000000000001 CONTEXT", "100000000000001 CONTEXT"},
		{"1 CONTEXT FULL", "00000000000001 CONTEXT FULL"},
		{"1 CONTEXT BACKWARD", "00000000000001 CONTEXT BACKWARD"},
		{"1 CONTEXT FORWARD", "00000000000001 CONTEXT FORWARD"},
		{"1 CONTEXT COST ", "00000000000001 CONTEXT COST"},
		{"1 CONTEXT COST 3", "00000000000001 CONTEXT COST 3"}, {"1 CONTEXT COST x", "00000000000001 CONTEXT COST x"},
		{"1 CONTEXT MAX 5", "00000000000001 CONTEXT MAX 5"}, {"1 CONTEXT MAX y", "00000000000001 CONTEXT MAX y"},
		{"1 CONTEXT MAX 5 COST 7", "00000000000001 CONTEXT COST 7 MAX 5"},
		{"1 CONTEXT |  N", "00000000000001 CONTEXT | N"},







<







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		{"1 ITEMS", "00000000000001 ITEMS"},
		{"ITEMS", "ITEMS"},

		{"CONTEXT", "CONTEXT"}, {"CONTEXT a", "CONTEXT a"},
		{"0 CONTEXT", "0 CONTEXT"}, {"1 CONTEXT", "00000000000001 CONTEXT"},
		{"00000000000001 CONTEXT", "00000000000001 CONTEXT"},
		{"100000000000001 CONTEXT", "100000000000001 CONTEXT"},

		{"1 CONTEXT BACKWARD", "00000000000001 CONTEXT BACKWARD"},
		{"1 CONTEXT FORWARD", "00000000000001 CONTEXT FORWARD"},
		{"1 CONTEXT COST ", "00000000000001 CONTEXT COST"},
		{"1 CONTEXT COST 3", "00000000000001 CONTEXT COST 3"}, {"1 CONTEXT COST x", "00000000000001 CONTEXT COST x"},
		{"1 CONTEXT MAX 5", "00000000000001 CONTEXT MAX 5"}, {"1 CONTEXT MAX y", "00000000000001 CONTEXT MAX y"},
		{"1 CONTEXT MAX 5 COST 7", "00000000000001 CONTEXT COST 7 MAX 5"},
		{"1 CONTEXT |  N", "00000000000001 CONTEXT | N"},

Changes to query/print.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package query

import (
	"io"
	"strconv"








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<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package query

import (
	"io"
	"strconv"

Changes to query/query.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package query provides a query for zettel.
package query

import (
	"context"
	"math/rand/v2"
	"slices"

	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

// Searcher is used to select zettel identifier based on search criteria.








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package query provides a query for zettel.
package query

import (
	"context"
	"math/rand"
	"slices"

	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

// Searcher is used to select zettel identifier based on search criteria.
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func (q *Query) addKey(key string, op compareOp) *Query {
	q = createIfNeeded(q)
	q.terms[len(q.terms)-1].addKey(key, op)
	return q
}

var missingMap = map[compareOp]bool{
	cmpNotExist: true,
	cmpNotEqual: true,
	cmpHasNot:   true,
	cmpNoMatch:  true,
}

// GetMetaValues returns the slice of all values specified for a given metadata key.
// If `withMissing` is true, all values are returned. Otherwise only those,
// where the comparison operator will positively search for a value.
func (q *Query) GetMetaValues(key string, withMissing bool) (vals []string) {
	if q == nil {
		return nil
	}
	for _, term := range q.terms {
		if mvs, hasMv := term.mvals[key]; hasMv {
			for _, ev := range mvs {
				if withMissing || !missingMap[ev.op] {
					vals = append(vals, ev.value)
				}
			}
		}
	}
	slices.Sort(vals)
	return slices.Compact(vals)
}








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func (q *Query) addKey(key string, op compareOp) *Query {
	q = createIfNeeded(q)
	q.terms[len(q.terms)-1].addKey(key, op)
	return q
}











func (q *Query) GetMetaValues(key string) (vals []string) {
	if q == nil {
		return nil
	}
	for _, term := range q.terms {
		if mvs, hasMv := term.mvals[key]; hasMv {
			for _, ev := range mvs {

				vals = append(vals, ev.value)

			}
		}
	}
	slices.Sort(vals)
	return slices.Compact(vals)
}

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	return q.seed, q.seed > 0
}

// SetDeterministic signals that the result should be the same if the seed is the same.
func (q *Query) SetDeterministic() *Query {
	q = createIfNeeded(q)
	if q.seed <= 0 {
		q.seed = int(rand.IntN(10000) + 1)
	}
	return q
}

// Actions returns the slice of action specifications
func (q *Query) Actions() []string {
	if q == nil {







|







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	return q.seed, q.seed > 0
}

// SetDeterministic signals that the result should be the same if the seed is the same.
func (q *Query) SetDeterministic() *Query {
	q = createIfNeeded(q)
	if q.seed <= 0 {
		q.seed = int(rand.Intn(10000) + 1)
	}
	return q
}

// Actions returns the slice of action specifications
func (q *Query) Actions() []string {
	if q == nil {

Changes to query/retrieve.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package query

// This file contains helper functions to search within the index.

import (








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package query

// This file contains helper functions to search within the index.

import (

Changes to query/select.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package query

import (
	"fmt"
	"strconv"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package query

import (
	"fmt"
	"strconv"
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		return createMatchTimestampFunc(values, addSearch)
	case meta.TypeNumber:
		return createMatchNumberFunc(values, addSearch)
	case meta.TypeTagSet:
		return createMatchTagSetFunc(values, addSearch)
	case meta.TypeWord:
		return createMatchWordFunc(values, addSearch)


	case meta.TypeZettelmarkup:
		return createMatchZmkFunc(values, addSearch)
	}
	return createMatchStringFunc(values, addSearch)
}

func createMatchIDFunc(values []expValue, addSearch addSearchFunc) matchValueFunc {
	preds := valuesToIDPredicates(values, addSearch)
	return func(value string) bool {
		for _, pred := range preds {
			if !pred(value) {
				return false
			}
		}
		return true
	}
}

func createMatchIDSetFunc(values []expValue, addSearch addSearchFunc) matchValueFunc {
	predList := valuesToSetPredicates(preprocessSet(values), addSearch)
	return func(value string) bool {
		ids := meta.ListFromValue(value)
		for _, preds := range predList {
			for _, pred := range preds {
				if !pred(ids) {
					return false
				}







>
>



















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		return createMatchTimestampFunc(values, addSearch)
	case meta.TypeNumber:
		return createMatchNumberFunc(values, addSearch)
	case meta.TypeTagSet:
		return createMatchTagSetFunc(values, addSearch)
	case meta.TypeWord:
		return createMatchWordFunc(values, addSearch)
	case meta.TypeWordSet:
		return createMatchWordSetFunc(values, addSearch)
	case meta.TypeZettelmarkup:
		return createMatchZmkFunc(values, addSearch)
	}
	return createMatchStringFunc(values, addSearch)
}

func createMatchIDFunc(values []expValue, addSearch addSearchFunc) matchValueFunc {
	preds := valuesToIDPredicates(values, addSearch)
	return func(value string) bool {
		for _, pred := range preds {
			if !pred(value) {
				return false
			}
		}
		return true
	}
}

func createMatchIDSetFunc(values []expValue, addSearch addSearchFunc) matchValueFunc {
	predList := valuesToWordSetPredicates(preprocessSet(values), addSearch)
	return func(value string) bool {
		ids := meta.ListFromValue(value)
		for _, preds := range predList {
			for _, pred := range preds {
				if !pred(ids) {
					return false
				}
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			}
		}
		return true
	}
}

func createMatchTagSetFunc(values []expValue, addSearch addSearchFunc) matchValueFunc {
	predList := valuesToSetPredicates(processTagSet(preprocessSet(sliceToLower(values))), addSearch)
	return func(value string) bool {
		tags := meta.TagsFromValue(value)
		for _, preds := range predList {
			for _, pred := range preds {
				if !pred(tags) {
					return false
				}







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			}
		}
		return true
	}
}

func createMatchTagSetFunc(values []expValue, addSearch addSearchFunc) matchValueFunc {
	predList := valuesToWordSetPredicates(processTagSet(preprocessSet(sliceToLower(values))), addSearch)
	return func(value string) bool {
		tags := meta.TagsFromValue(value)
		for _, preds := range predList {
			for _, pred := range preds {
				if !pred(tags) {
					return false
				}
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	preds := valuesToStringPredicates(sliceToLower(values), addSearch)
	return func(value string) bool {
		value = strings.ToLower(value)
		for _, pred := range preds {
			if !pred(value) {
				return false
			}















		}
		return true
	}
}

func sliceToLower(sl []expValue) []expValue {
	result := make([]expValue, 0, len(sl))







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	preds := valuesToStringPredicates(sliceToLower(values), addSearch)
	return func(value string) bool {
		value = strings.ToLower(value)
		for _, pred := range preds {
			if !pred(value) {
				return false
			}
		}
		return true
	}
}

func createMatchWordSetFunc(values []expValue, addSearch addSearchFunc) matchValueFunc {
	predsList := valuesToWordSetPredicates(preprocessSet(sliceToLower(values)), addSearch)
	return func(value string) bool {
		words := meta.ListFromValue(value)
		for _, preds := range predsList {
			for _, pred := range preds {
				if !pred(words) {
					return false
				}
			}
		}
		return true
	}
}

func sliceToLower(sl []expValue) []expValue {
	result := make([]expValue, 0, len(sl))
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		}
	}
	return true
}

func zmk2text(zmk string) string {
	isASCII, hasUpper, needParse := true, false, false
	for i := range len(zmk) {
		ch := zmk[i]
		if ch >= utf8.RuneSelf {
			isASCII = false
			break
		}
		hasUpper = hasUpper || ('A' <= ch && ch <= 'Z')
		needParse = needParse || !(('A' <= ch && ch <= 'Z') || ('a' <= ch && ch <= 'z') || ('0' <= ch && ch <= '9') || ch == ' ')







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		}
	}
	return true
}

func zmk2text(zmk string) string {
	isASCII, hasUpper, needParse := true, false, false
	for i := 0; i < len(zmk); i++ {
		ch := zmk[i]
		if ch >= utf8.RuneSelf {
			isASCII = false
			break
		}
		hasUpper = hasUpper || ('A' <= ch && ch <= 'Z')
		needParse = needParse || !(('A' <= ch && ch <= 'Z') || ('a' <= ch && ch <= 'z') || ('0' <= ch && ch <= '9') || ch == ' ')
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			result[i] = createWordCompareFunc(value, op)
		}
	}
	return result
}

func isDigits(s string) bool {
	for i := range len(s) {
		if ch := s[i]; ch < '0' || '9' < ch {
			return false
		}
	}
	return true
}








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			result[i] = createWordCompareFunc(value, op)
		}
	}
	return result
}

func isDigits(s string) bool {
	for i := 0; i < len(s); i++ {
		if ch := s[i]; ch < '0' || '9' < ch {
			return false
		}
	}
	return true
}

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	default:
		panic(fmt.Sprintf("Unknown compare operation %d with value %q", cmpOp, cmpVal))
	}
}

type stringSetPredicate func(value []string) bool

func valuesToSetPredicates(values [][]expValue, addSearch addSearchFunc) [][]stringSetPredicate {
	result := make([][]stringSetPredicate, len(values))
	for i, val := range values {
		elemPreds := make([]stringSetPredicate, len(val))
		for j, v := range val {
			opVal := v.value // loop variable is used in closure --> save needed value
			switch op := disambiguateWordOp(v.op); op {
			case cmpEqual:







|







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	default:
		panic(fmt.Sprintf("Unknown compare operation %d with value %q", cmpOp, cmpVal))
	}
}

type stringSetPredicate func(value []string) bool

func valuesToWordSetPredicates(values [][]expValue, addSearch addSearchFunc) [][]stringSetPredicate {
	result := make([][]stringSetPredicate, len(values))
	for i, val := range values {
		elemPreds := make([]stringSetPredicate, len(val))
		for j, v := range val {
			opVal := v.value // loop variable is used in closure --> save needed value
			switch op := disambiguateWordOp(v.op); op {
			case cmpEqual:

Changes to query/select_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package query_test

import (
	"context"
	"testing"








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<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package query_test

import (
	"context"
	"testing"

Changes to query/sorter.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package query

import (
	"strconv"









<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package query

import (
	"strconv"

Changes to query/specs.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2023-present Detlef Stern
//-----------------------------------------------------------------------------

package query

import "zettelstore.de/client.fossil/api"

// IdentSpec contains all specification values to calculate the ident directive.








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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package query

import "zettelstore.de/client.fossil/api"

// IdentSpec contains all specification values to calculate the ident directive.

Changes to query/unlinked.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2023-present Detlef Stern
//-----------------------------------------------------------------------------

package query

import (
	"zettelstore.de/client.fossil/api"
	"zettelstore.de/z/strfun"








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<
<







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8



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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package query

import (
	"zettelstore.de/client.fossil/api"
	"zettelstore.de/z/strfun"

Changes to strfun/escape.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package strfun

import "io"

var (








<
<
<







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8



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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package strfun

import "io"

var (

Changes to strfun/set.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

package strfun

// Set ist a set of strings.
type Set map[string]struct{}









<
<
<







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8



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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package strfun

// Set ist a set of strings.
type Set map[string]struct{}

Changes to strfun/slugify.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package strfun

import (
	"strings"
	"unicode"








<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package strfun

import (
	"strings"
	"unicode"

Changes to strfun/slugify_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package strfun_test

import (
	"testing"









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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package strfun_test

import (
	"testing"

Changes to strfun/strfun.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

// Package strfun provides some string functions.
package strfun

import (
	"strings"








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package strfun provides some string functions.
package strfun

import (
	"strings"
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		runes[maxLen-1] = '\u2025'
	}

	var sb strings.Builder
	for _, r := range runes {
		sb.WriteRune(r)
	}
	for range maxLen - len(runes) {
		sb.WriteRune(pad)
	}
	return sb.String()
}

// SplitLines splits the given string into a list of lines.
func SplitLines(s string) []string {







|







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		runes[maxLen-1] = '\u2025'
	}

	var sb strings.Builder
	for _, r := range runes {
		sb.WriteRune(r)
	}
	for i := 0; i < maxLen-len(runes); i++ {
		sb.WriteRune(pad)
	}
	return sb.String()
}

// SplitLines splits the given string into a list of lines.
func SplitLines(s string) []string {

Changes to strfun/strfun_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package strfun_test

import (
	"testing"









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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package strfun_test

import (
	"testing"

Changes to tests/client/client_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore client is licensed under the latest version of the EUPL
// (European Union Public License). Please see file LICENSE.txt for your rights
// and obligations under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

// Package client provides a client for accessing the Zettelstore via its API.
package client_test

import (
	"context"
	"flag"
	"fmt"
	"io"
	"net/http"
	"net/url"
	"slices"
	"strconv"
	"testing"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/client"
	"zettelstore.de/z/kernel"
)








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore client is licensed under the latest version of the EUPL
// (European Union Public License). Please see file LICENSE.txt for your rights
// and obligations under this license.



//-----------------------------------------------------------------------------

// Package client provides a client for accessing the Zettelstore via its API.
package client_test

import (
	"context"
	"flag"
	"fmt"

	"net/http"
	"net/url"

	"strconv"
	"testing"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/client"
	"zettelstore.de/z/kernel"
)
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	if err != nil {
		t.Error(err)
	} else if zid != exp {
		t.Errorf("role zettel for zettel should be %q, but got %q", exp, zid)
	}
}

func TestRedirect(t *testing.T) {
	t.Parallel()
	c := getClient()
	search := api.OrderDirective + " " + api.ReverseDirective + " " + api.KeyID + api.ActionSeparator + api.RedirectAction
	ub := c.NewURLBuilder('z').AppendQuery(search)
	respRedirect, err := http.Get(ub.String())
	if err != nil {
		t.Error(err)
		return
	}
	defer respRedirect.Body.Close()
	bodyRedirect, err := io.ReadAll(respRedirect.Body)
	if err != nil {
		t.Error(err)
		return
	}
	ub.ClearQuery().SetZid(api.ZidEmoji)
	respEmoji, err := http.Get(ub.String())
	if err != nil {
		t.Error(err)
		return
	}
	defer respEmoji.Body.Close()
	bodyEmoji, err := io.ReadAll(respEmoji.Body)
	if err != nil {
		t.Error(err)
		return
	}
	if !slices.Equal(bodyRedirect, bodyEmoji) {
		t.Error("Wrong redirect")
		t.Error("REDIRECT", respRedirect)
		t.Error("EXPECTED", respEmoji)
	}
}

func TestVersion(t *testing.T) {
	t.Parallel()
	c := getClient()
	ver, err := c.GetVersionInfo(context.Background())
	if err != nil {
		t.Error(err)
		return







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	if err != nil {
		t.Error(err)
	} else if zid != exp {
		t.Errorf("role zettel for zettel should be %q, but got %q", exp, zid)
	}
}




































func TestVersion(t *testing.T) {
	t.Parallel()
	c := getClient()
	ver, err := c.GetVersionInfo(context.Background())
	if err != nil {
		t.Error(err)
		return

Changes to tests/client/crud_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore client is licensed under the latest version of the EUPL
// (European Union Public License). Please see file LICENSE.txt for your rights
// and obligations under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package client_test

import (
	"context"
	"strings"








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore client is licensed under the latest version of the EUPL
// (European Union Public License). Please see file LICENSE.txt for your rights
// and obligations under this license.



//-----------------------------------------------------------------------------

package client_test

import (
	"context"
	"strings"

Changes to tests/client/embed_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package client_test

import (
	"context"
	"strings"








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<







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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package client_test

import (
	"context"
	"strings"

Changes to tests/markdown_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package tests

import (
	"bytes"
	"encoding/json"
	"fmt"
	"os"
	"strings"
	"testing"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/input"
	"zettelstore.de/z/ast"
	"zettelstore.de/z/config"
	"zettelstore.de/z/encoder"
	_ "zettelstore.de/z/encoder/htmlenc"
	_ "zettelstore.de/z/encoder/mdenc"
	_ "zettelstore.de/z/encoder/shtmlenc"
	_ "zettelstore.de/z/encoder/szenc"
	_ "zettelstore.de/z/encoder/textenc"
	_ "zettelstore.de/z/encoder/zmkenc"

	"zettelstore.de/z/parser"
	_ "zettelstore.de/z/parser/markdown"
	_ "zettelstore.de/z/parser/zettelmark"
	"zettelstore.de/z/zettel/meta"
)

type markdownTestCase struct {








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package tests

import (
	"bytes"
	"encoding/json"
	"fmt"
	"os"
	"strings"
	"testing"

	"zettelstore.de/client.fossil/api"

	"zettelstore.de/z/ast"
	"zettelstore.de/z/config"
	"zettelstore.de/z/encoder"
	_ "zettelstore.de/z/encoder/htmlenc"
	_ "zettelstore.de/z/encoder/mdenc"
	_ "zettelstore.de/z/encoder/shtmlenc"
	_ "zettelstore.de/z/encoder/szenc"
	_ "zettelstore.de/z/encoder/textenc"
	_ "zettelstore.de/z/encoder/zmkenc"
	"zettelstore.de/z/input"
	"zettelstore.de/z/parser"
	_ "zettelstore.de/z/parser/markdown"
	_ "zettelstore.de/z/parser/zettelmark"
	"zettelstore.de/z/zettel/meta"
)

type markdownTestCase struct {

Changes to tests/naughtystrings_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package tests

import (
	"bufio"
	"io"
	"os"
	"path/filepath"
	"testing"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/input"
	_ "zettelstore.de/z/cmd"
	"zettelstore.de/z/encoder"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/zettel/meta"
)

// Test all parser / encoder with a list of "naughty strings", i.e. unusual strings
// that often crash software.









<
<
<












|
|
|







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package tests

import (
	"bufio"
	"io"
	"os"
	"path/filepath"
	"testing"

	"zettelstore.de/client.fossil/api"
	_ "zettelstore.de/z/cmd"
	"zettelstore.de/z/encoder"
	"zettelstore.de/z/input"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/zettel/meta"
)

// Test all parser / encoder with a list of "naughty strings", i.e. unusual strings
// that often crash software.

Changes to tests/regression_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package tests provides some higher-level tests.
package tests

import (
	"context"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package tests provides some higher-level tests.
package tests

import (
	"context"

Added tools/build.go.









































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//-----------------------------------------------------------------------------

// Package main provides a command to build and run the software.
package main

import (
	"archive/zip"
	"bytes"
	"errors"
	"flag"
	"fmt"
	"io"
	"io/fs"
	"net"
	"os"
	"os/exec"
	"path/filepath"
	"strings"
	"time"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/z/input"
	"zettelstore.de/z/strfun"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

var envDirectProxy = []string{"GOPROXY=direct"}
var envGoVCS = []string{"GOVCS=zettelstore.de:fossil"}

func executeCommand(env []string, name string, arg ...string) (string, error) {
	logCommand("EXEC", env, name, arg)
	var out strings.Builder
	cmd := prepareCommand(env, name, arg, &out)
	err := cmd.Run()
	return out.String(), err
}

func prepareCommand(env []string, name string, arg []string, out io.Writer) *exec.Cmd {
	if len(env) > 0 {
		env = append(env, os.Environ()...)
	}
	cmd := exec.Command(name, arg...)
	cmd.Env = env
	cmd.Stdin = nil
	cmd.Stdout = out
	cmd.Stderr = os.Stderr
	return cmd
}

func logCommand(exec string, env []string, name string, arg []string) {
	if verbose {
		if len(env) > 0 {
			for i, e := range env {
				fmt.Fprintf(os.Stderr, "ENV%d %v\n", i+1, e)
			}
		}
		fmt.Fprintln(os.Stderr, exec, name, arg)
	}
}

func readVersionFile() (string, error) {
	content, err := os.ReadFile("VERSION")
	if err != nil {
		return "", err
	}
	return strings.TrimFunc(string(content), func(r rune) bool {
		return r <= ' '
	}), nil
}

func getVersion() string {
	base, err := readVersionFile()
	if err != nil {
		base = "dev"
	}
	return base
}

var dirtyPrefixes = []string{
	"DELETED ", "ADDED ", "UPDATED ", "CONFLICT ", "EDITED ", "RENAMED ", "EXTRA "}

const dirtySuffix = "-dirty"

func readFossilDirty() (string, error) {
	s, err := executeCommand(nil, "fossil", "status", "--differ")
	if err != nil {
		return "", err
	}
	for _, line := range strfun.SplitLines(s) {
		for _, prefix := range dirtyPrefixes {
			if strings.HasPrefix(line, prefix) {
				return dirtySuffix, nil
			}
		}
	}
	return "", nil
}

func getFossilDirty() string {
	fossil, err := readFossilDirty()
	if err != nil {
		return ""
	}
	return fossil
}

func findExec(cmd string) string {
	if path, err := executeCommand(nil, "which", cmd); err == nil && path != "" {
		return strings.TrimSpace(path)
	}
	return ""
}

func cmdCheck(forRelease bool) error {
	if err := checkGoTest("./..."); err != nil {
		return err
	}
	if err := checkGoVet(); err != nil {
		return err
	}
	if err := checkShadow(forRelease); err != nil {
		return err
	}
	if err := checkStaticcheck(); err != nil {
		return err
	}
	if err := checkUnparam(forRelease); err != nil {
		return err
	}
	if forRelease {
		if err := checkGoVulncheck(); err != nil {
			return err
		}
	}
	return checkFossilExtra()
}

func checkGoTest(pkg string, testParams ...string) error {
	var env []string
	env = append(env, envDirectProxy...)
	env = append(env, envGoVCS...)
	args := []string{"test", pkg}
	args = append(args, testParams...)
	out, err := executeCommand(env, "go", args...)
	if err != nil {
		for _, line := range strfun.SplitLines(out) {
			if strings.HasPrefix(line, "ok") || strings.HasPrefix(line, "?") {
				continue
			}
			fmt.Fprintln(os.Stderr, line)
		}
	}
	return err
}

func checkGoVet() error {
	out, err := executeCommand(envGoVCS, "go", "vet", "./...")
	if err != nil {
		fmt.Fprintln(os.Stderr, "Some checks failed")
		if len(out) > 0 {
			fmt.Fprintln(os.Stderr, out)
		}
	}
	return err
}

func checkShadow(forRelease bool) error {
	path, err := findExecStrict("shadow", forRelease)
	if path == "" {
		return err
	}
	out, err := executeCommand(envGoVCS, path, "-strict", "./...")
	if err != nil {
		fmt.Fprintln(os.Stderr, "Some shadowed variables found")
		if len(out) > 0 {
			fmt.Fprintln(os.Stderr, out)
		}
	}
	return err
}

func checkStaticcheck() error {
	out, err := executeCommand(envGoVCS, "staticcheck", "./...")
	if err != nil {
		fmt.Fprintln(os.Stderr, "Some staticcheck problems found")
		if len(out) > 0 {
			fmt.Fprintln(os.Stderr, out)
		}
	}
	return err
}

func checkUnparam(forRelease bool) error {
	path, err := findExecStrict("unparam", forRelease)
	if path == "" {
		return err
	}
	out, err := executeCommand(envGoVCS, path, "./...")
	if err != nil {
		fmt.Fprintln(os.Stderr, "Some unparam problems found")
		if len(out) > 0 {
			fmt.Fprintln(os.Stderr, out)
		}
	}
	if forRelease {
		if out2, err2 := executeCommand(nil, path, "-exported", "-tests", "./..."); err2 != nil {
			fmt.Fprintln(os.Stderr, "Some optional unparam problems found")
			if len(out2) > 0 {
				fmt.Fprintln(os.Stderr, out2)
			}
		}
	}
	return err
}

func checkGoVulncheck() error {
	out, err := executeCommand(envGoVCS, "govulncheck", "./...")
	if err != nil {
		fmt.Fprintln(os.Stderr, "Some checks failed")
		if len(out) > 0 {
			fmt.Fprintln(os.Stderr, out)
		}
	}
	return err
}

func findExecStrict(cmd string, forRelease bool) (string, error) {
	path := findExec(cmd)
	if path != "" || !forRelease {
		return path, nil
	}
	return "", errors.New("Command '" + cmd + "' not installed, but required for release")
}

func checkFossilExtra() error {
	out, err := executeCommand(nil, "fossil", "extra")
	if err != nil {
		fmt.Fprintln(os.Stderr, "Unable to execute 'fossil extra'")
		return err
	}
	if len(out) > 0 {
		fmt.Fprint(os.Stderr, "Warning: unversioned file(s):")
		for i, extra := range strfun.SplitLines(out) {
			if i > 0 {
				fmt.Fprint(os.Stderr, ",")
			}
			fmt.Fprintf(os.Stderr, " %q", extra)
		}
		fmt.Fprintln(os.Stderr)
	}
	return nil
}

type zsInfo struct {
	cmd          *exec.Cmd
	out          strings.Builder
	adminAddress string
}

func cmdTestAPI() error {
	var err error
	var info zsInfo
	needServer := !addressInUse(":23123")
	if needServer {
		err = startZettelstore(&info)
	}
	if err != nil {
		return err
	}
	err = checkGoTest("zettelstore.de/z/tests/client", "-base-url", "http://127.0.0.1:23123")
	if needServer {
		err1 := stopZettelstore(&info)
		if err == nil {
			err = err1
		}
	}
	return err
}

func startZettelstore(info *zsInfo) error {
	info.adminAddress = ":2323"
	name, arg := "go", []string{
		"run", "cmd/zettelstore/main.go", "run",
		"-c", "./testdata/testbox/19700101000000.zettel", "-a", info.adminAddress[1:]}
	logCommand("FORK", nil, name, arg)
	cmd := prepareCommand(envGoVCS, name, arg, &info.out)
	if !verbose {
		cmd.Stderr = nil
	}
	err := cmd.Start()
	time.Sleep(2 * time.Second)
	for i := 0; i < 100; i++ {
		time.Sleep(time.Millisecond * 100)
		if addressInUse(info.adminAddress) {
			info.cmd = cmd
			return err
		}
	}
	time.Sleep(4 * time.Second) // Wait for all zettel to be indexed.
	return errors.New("zettelstore did not start")
}

func stopZettelstore(i *zsInfo) error {
	conn, err := net.Dial("tcp", i.adminAddress)
	if err != nil {
		fmt.Println("Unable to stop Zettelstore")
		return err
	}
	io.WriteString(conn, "shutdown\n")
	conn.Close()
	err = i.cmd.Wait()
	return err
}

func addressInUse(address string) bool {
	conn, err := net.Dial("tcp", address)
	if err != nil {
		return false
	}
	conn.Close()
	return true
}

func cmdBuild() error {
	return doBuild(envDirectProxy, getVersion(), "bin/zettelstore")
}

func doBuild(env []string, version, target string) error {
	env = append(env, "CGO_ENABLED=0")
	env = append(env, envGoVCS...)
	out, err := executeCommand(
		env,
		"go", "build",
		"-tags", "osusergo,netgo",
		"-trimpath",
		"-ldflags", fmt.Sprintf("-X main.version=%v -w", version),
		"-o", target,
		"zettelstore.de/z/cmd/zettelstore",
	)
	if err != nil {
		return err
	}
	if len(out) > 0 {
		fmt.Println(out)
	}
	return nil
}

func cmdManual() error {
	base := getReleaseVersionData()
	return createManualZip(".", base)
}

func createManualZip(path, base string) error {
	manualPath := filepath.Join("docs", "manual")
	entries, err := os.ReadDir(manualPath)
	if err != nil {
		return err
	}
	zipName := filepath.Join(path, "manual-"+base+".zip")
	zipFile, err := os.OpenFile(zipName, os.O_RDWR|os.O_CREATE, 0600)
	if err != nil {
		return err
	}
	defer zipFile.Close()
	zipWriter := zip.NewWriter(zipFile)
	defer zipWriter.Close()

	for _, entry := range entries {
		if err = createManualZipEntry(manualPath, entry, zipWriter); err != nil {
			return err
		}
	}
	return nil
}

const versionZid = "00001000000001"

func createManualZipEntry(path string, entry fs.DirEntry, zipWriter *zip.Writer) error {
	info, err := entry.Info()
	if err != nil {
		return err
	}
	fh, err := zip.FileInfoHeader(info)
	if err != nil {
		return err
	}
	name := entry.Name()
	fh.Name = name
	fh.Method = zip.Deflate
	w, err := zipWriter.CreateHeader(fh)
	if err != nil {
		return err
	}
	manualFile, err := os.Open(filepath.Join(path, name))
	if err != nil {
		return err
	}
	defer manualFile.Close()

	if name != versionZid+".zettel" {
		_, err = io.Copy(w, manualFile)
		return err
	}

	data, err := io.ReadAll(manualFile)
	if err != nil {
		return err
	}
	inp := input.NewInput(data)
	m := meta.NewFromInput(id.MustParse(versionZid), inp)
	m.SetNow(api.KeyModified)

	var buf bytes.Buffer
	if _, err = fmt.Fprintf(&buf, "id: %s\n", versionZid); err != nil {
		return err
	}
	if _, err = m.WriteComputed(&buf); err != nil {
		return err
	}
	version := getVersion()
	if _, err = fmt.Fprintf(&buf, "\n%s", version); err != nil {
		return err
	}
	_, err = io.Copy(w, &buf)
	return err
}

func getReleaseVersionData() string {
	if fossil := getFossilDirty(); fossil != "" {
		fmt.Fprintln(os.Stderr, "Warning: releasing a dirty version")
	}
	base := getVersion()
	if strings.HasSuffix(base, "dev") {
		return base[:len(base)-3] + "preview-" + time.Now().Local().Format("20060102")
	}
	return base
}

func cmdRelease() error {
	if err := cmdCheck(true); err != nil {
		return err
	}
	base := getReleaseVersionData()
	releases := []struct {
		arch string
		os   string
		env  []string
		name string
	}{
		{"amd64", "linux", nil, "zettelstore"},
		{"arm", "linux", []string{"GOARM=6"}, "zettelstore"},
		{"amd64", "darwin", nil, "zettelstore"},
		{"arm64", "darwin", nil, "zettelstore"},
		{"amd64", "windows", nil, "zettelstore.exe"},
	}
	for _, rel := range releases {
		env := append([]string{}, rel.env...)
		env = append(env, "GOARCH="+rel.arch, "GOOS="+rel.os)
		env = append(env, envDirectProxy...)
		env = append(env, envGoVCS...)
		zsName := filepath.Join("releases", rel.name)
		if err := doBuild(env, base, zsName); err != nil {
			return err
		}
		zipName := fmt.Sprintf("zettelstore-%v-%v-%v.zip", base, rel.os, rel.arch)
		if err := createReleaseZip(zsName, zipName, rel.name); err != nil {
			return err
		}
		if err := os.Remove(zsName); err != nil {
			return err
		}
	}
	return createManualZip("releases", base)
}

func createReleaseZip(zsName, zipName, fileName string) error {
	zipFile, err := os.OpenFile(filepath.Join("releases", zipName), os.O_RDWR|os.O_CREATE, 0600)
	if err != nil {
		return err
	}
	defer zipFile.Close()
	zw := zip.NewWriter(zipFile)
	defer zw.Close()
	err = addFileToZip(zw, zsName, fileName)
	if err != nil {
		return err
	}
	err = addFileToZip(zw, "LICENSE.txt", "LICENSE.txt")
	if err != nil {
		return err
	}
	err = addFileToZip(zw, "docs/readmezip.txt", "README.txt")
	return err
}

func addFileToZip(zipFile *zip.Writer, filepath, filename string) error {
	zsFile, err := os.Open(filepath)
	if err != nil {
		return err
	}
	defer zsFile.Close()
	stat, err := zsFile.Stat()
	if err != nil {
		return err
	}
	fh, err := zip.FileInfoHeader(stat)
	if err != nil {
		return err
	}
	fh.Name = filename
	fh.Method = zip.Deflate
	w, err := zipFile.CreateHeader(fh)
	if err != nil {
		return err
	}
	_, err = io.Copy(w, zsFile)
	return err
}

func cmdTools() error {
	tools := []struct{ name, pack string }{
		{"shadow", "golang.org/x/tools/go/analysis/passes/shadow/cmd/shadow@latest"},
		{"unparam", "mvdan.cc/unparam@latest"},
		{"staticcheck", "honnef.co/go/tools/cmd/staticcheck@latest"},
		{"govulncheck", "golang.org/x/vuln/cmd/govulncheck@latest"},
	}
	for _, tool := range tools {
		err := doGoInstall(tool.pack)
		if err != nil {
			return err
		}
	}
	return nil
}
func doGoInstall(pack string) error {
	out, err := executeCommand(nil, "go", "install", pack)
	if err != nil {
		fmt.Fprintln(os.Stderr, "Unable to install package", pack)
		if len(out) > 0 {
			fmt.Fprintln(os.Stderr, out)
		}
	}
	return err
}

func cmdClean() error {
	for _, dir := range []string{"bin", "releases"} {
		err := os.RemoveAll(dir)
		if err != nil {
			return err
		}
	}
	out, err := executeCommand(nil, "go", "clean", "./...")
	if err != nil {
		return err
	}
	if len(out) > 0 {
		fmt.Println(out)
	}
	out, err = executeCommand(nil, "go", "clean", "-cache", "-modcache", "-testcache")
	if err != nil {
		return err
	}
	if len(out) > 0 {
		fmt.Println(out)
	}
	return nil
}

func cmdHelp() {
	fmt.Println(`Usage: go run tools/build.go [-v] COMMAND

Options:
  -v       Verbose output.

Commands:
  build     Build the software for local computer.
  check     Check current working state: execute tests,
            static analysis tools, extra files, ...
            Is automatically done when releasing the software.
  clean     Remove all build and release directories.
  help      Output this text.
  manual    Create a ZIP file with all manual zettel
  relcheck  Check current working state for release.
  release   Create the software for various platforms and put them in
            appropriate named ZIP files.
  testapi   Start a Zettelstore and execute API tests.
  tools     Install/update tools needed for building Zettelstore.
  version   Print the current version of the software.

All commands can be abbreviated as long as they remain unique.`)
}

var verbose bool

func main() {
	flag.BoolVar(&verbose, "v", false, "Verbose output")
	flag.Parse()
	var err error
	args := flag.Args()
	if len(args) < 1 {
		cmdHelp()
	} else {
		switch args[0] {
		case "b", "bu", "bui", "buil", "build":
			err = cmdBuild()
		case "m", "ma", "man", "manu", "manua", "manual":
			err = cmdManual()
		case "r", "re", "rel", "rele", "relea", "releas", "release":
			err = cmdRelease()
		case "cl", "cle", "clea", "clean":
			err = cmdClean()
		case "v", "ve", "ver", "vers", "versi", "versio", "version":
			fmt.Print(getVersion())
		case "ch", "che", "chec", "check":
			err = cmdCheck(false)
		case "relc", "relch", "relche", "relchec", "relcheck":
			err = cmdCheck(true)
		case "te", "tes", "test", "testa", "testap", "testapi":
			cmdTestAPI()
		case "to", "too", "tool", "tools":
			err = cmdTools()
		case "h", "he", "hel", "help":
			cmdHelp()
		default:
			fmt.Fprintf(os.Stderr, "Unknown command %q\n", args[0])
			cmdHelp()
			os.Exit(1)
		}
	}
	if err != nil {
		fmt.Fprintln(os.Stderr, err)
	}
}

Deleted tools/build/build.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

// Package main provides a command to build and run the software.
package main

import (
	"archive/zip"
	"bytes"
	"flag"
	"fmt"
	"io"
	"io/fs"
	"os"
	"path/filepath"
	"strings"
	"time"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/input"
	"zettelstore.de/z/strfun"
	"zettelstore.de/z/tools"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

func readVersionFile() (string, error) {
	content, err := os.ReadFile("VERSION")
	if err != nil {
		return "", err
	}
	return strings.TrimFunc(string(content), func(r rune) bool {
		return r <= ' '
	}), nil
}

func getVersion() string {
	base, err := readVersionFile()
	if err != nil {
		base = "dev"
	}
	return base
}

var dirtyPrefixes = []string{
	"DELETED ", "ADDED ", "UPDATED ", "CONFLICT ", "EDITED ", "RENAMED ", "EXTRA "}

const dirtySuffix = "-dirty"

func readFossilDirty() (string, error) {
	s, err := tools.ExecuteCommand(nil, "fossil", "status", "--differ")
	if err != nil {
		return "", err
	}
	for _, line := range strfun.SplitLines(s) {
		for _, prefix := range dirtyPrefixes {
			if strings.HasPrefix(line, prefix) {
				return dirtySuffix, nil
			}
		}
	}
	return "", nil
}

func getFossilDirty() string {
	fossil, err := readFossilDirty()
	if err != nil {
		return ""
	}
	return fossil
}

func cmdBuild() error {
	return doBuild(tools.EnvDirectProxy, getVersion(), "bin/zettelstore")
}

func doBuild(env []string, version, target string) error {
	env = append(env, "CGO_ENABLED=0")
	env = append(env, tools.EnvGoVCS...)
	out, err := tools.ExecuteCommand(
		env,
		"go", "build",
		"-tags", "osusergo,netgo",
		"-trimpath",
		"-ldflags", fmt.Sprintf("-X main.version=%v -w", version),
		"-o", target,
		"zettelstore.de/z/cmd/zettelstore",
	)
	if err != nil {
		return err
	}
	if len(out) > 0 {
		fmt.Println(out)
	}
	return nil
}

func cmdHelp() {
	fmt.Println(`Usage: go run tools/build/build.go [-v] COMMAND

Options:
  -v       Verbose output.

Commands:
  build     Build the software for local computer.
  help      Output this text.
  manual    Create a ZIP file with all manual zettel
  release   Create the software for various platforms and put them in
            appropriate named ZIP files.
  version   Print the current version of the software.

All commands can be abbreviated as long as they remain unique.`)
}

func main() {
	flag.BoolVar(&tools.Verbose, "v", false, "Verbose output")
	flag.Parse()
	var err error
	args := flag.Args()
	if len(args) < 1 {
		cmdHelp()
	} else {
		switch args[0] {
		case "b", "bu", "bui", "buil", "build":
			err = cmdBuild()
		case "m", "ma", "man", "manu", "manua", "manual":
			err = cmdManual()
		case "r", "re", "rel", "rele", "relea", "releas", "release":
			err = cmdRelease()
		case "v", "ve", "ver", "vers", "versi", "versio", "version":
			fmt.Print(getVersion())
		case "h", "he", "hel", "help":
			cmdHelp()
		default:
			fmt.Fprintf(os.Stderr, "Unknown command %q\n", args[0])
			cmdHelp()
			os.Exit(1)
		}
	}
	if err != nil {
		fmt.Fprintln(os.Stderr, err)
	}
}

// --- manual

func cmdManual() error {
	base := getReleaseVersionData()
	return createManualZip(".", base)
}

func createManualZip(path, base string) error {
	manualPath := filepath.Join("docs", "manual")
	entries, err := os.ReadDir(manualPath)
	if err != nil {
		return err
	}
	zipName := filepath.Join(path, "manual-"+base+".zip")
	zipFile, err := os.OpenFile(zipName, os.O_RDWR|os.O_CREATE, 0600)
	if err != nil {
		return err
	}
	defer zipFile.Close()
	zipWriter := zip.NewWriter(zipFile)
	defer zipWriter.Close()

	for _, entry := range entries {
		if err = createManualZipEntry(manualPath, entry, zipWriter); err != nil {
			return err
		}
	}
	return nil
}

const versionZid = "00001000000001"

func createManualZipEntry(path string, entry fs.DirEntry, zipWriter *zip.Writer) error {
	info, err := entry.Info()
	if err != nil {
		return err
	}
	fh, err := zip.FileInfoHeader(info)
	if err != nil {
		return err
	}
	name := entry.Name()
	fh.Name = name
	fh.Method = zip.Deflate
	w, err := zipWriter.CreateHeader(fh)
	if err != nil {
		return err
	}
	manualFile, err := os.Open(filepath.Join(path, name))
	if err != nil {
		return err
	}
	defer manualFile.Close()

	if name != versionZid+".zettel" {
		_, err = io.Copy(w, manualFile)
		return err
	}

	data, err := io.ReadAll(manualFile)
	if err != nil {
		return err
	}
	inp := input.NewInput(data)
	m := meta.NewFromInput(id.MustParse(versionZid), inp)
	m.SetNow(api.KeyModified)

	var buf bytes.Buffer
	if _, err = fmt.Fprintf(&buf, "id: %s\n", versionZid); err != nil {
		return err
	}
	if _, err = m.WriteComputed(&buf); err != nil {
		return err
	}
	version := getVersion()
	if _, err = fmt.Fprintf(&buf, "\n%s", version); err != nil {
		return err
	}
	_, err = io.Copy(w, &buf)
	return err
}

//--- release

func cmdRelease() error {
	if err := tools.Check(true); err != nil {
		return err
	}
	base := getReleaseVersionData()
	releases := []struct {
		arch string
		os   string
		env  []string
		name string
	}{
		{"amd64", "linux", nil, "zettelstore"},
		{"arm", "linux", []string{"GOARM=6"}, "zettelstore"},
		{"amd64", "darwin", nil, "zettelstore"},
		{"arm64", "darwin", nil, "zettelstore"},
		{"amd64", "windows", nil, "zettelstore.exe"},
	}
	for _, rel := range releases {
		env := append([]string{}, rel.env...)
		env = append(env, "GOARCH="+rel.arch, "GOOS="+rel.os)
		env = append(env, tools.EnvDirectProxy...)
		env = append(env, tools.EnvGoVCS...)
		zsName := filepath.Join("releases", rel.name)
		if err := doBuild(env, base, zsName); err != nil {
			return err
		}
		zipName := fmt.Sprintf("zettelstore-%v-%v-%v.zip", base, rel.os, rel.arch)
		if err := createReleaseZip(zsName, zipName, rel.name); err != nil {
			return err
		}
		if err := os.Remove(zsName); err != nil {
			return err
		}
	}
	return createManualZip("releases", base)
}

func getReleaseVersionData() string {
	if fossil := getFossilDirty(); fossil != "" {
		fmt.Fprintln(os.Stderr, "Warning: releasing a dirty version")
	}
	base := getVersion()
	if strings.HasSuffix(base, "dev") {
		return base[:len(base)-3] + "preview-" + time.Now().Local().Format("20060102")
	}
	return base
}

func createReleaseZip(zsName, zipName, fileName string) error {
	zipFile, err := os.OpenFile(filepath.Join("releases", zipName), os.O_RDWR|os.O_CREATE, 0600)
	if err != nil {
		return err
	}
	defer zipFile.Close()
	zw := zip.NewWriter(zipFile)
	defer zw.Close()
	err = addFileToZip(zw, zsName, fileName)
	if err != nil {
		return err
	}
	err = addFileToZip(zw, "LICENSE.txt", "LICENSE.txt")
	if err != nil {
		return err
	}
	err = addFileToZip(zw, "docs/readmezip.txt", "README.txt")
	return err
}

func addFileToZip(zipFile *zip.Writer, filepath, filename string) error {
	zsFile, err := os.Open(filepath)
	if err != nil {
		return err
	}
	defer zsFile.Close()
	stat, err := zsFile.Stat()
	if err != nil {
		return err
	}
	fh, err := zip.FileInfoHeader(stat)
	if err != nil {
		return err
	}
	fh.Name = filename
	fh.Method = zip.Deflate
	w, err := zipFile.CreateHeader(fh)
	if err != nil {
		return err
	}
	_, err = io.Copy(w, zsFile)
	return err
}
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Deleted tools/check/check.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2023-present Detlef Stern
//-----------------------------------------------------------------------------

// Package main provides a command to execute unit tests.
package main

import (
	"flag"
	"fmt"
	"os"

	"zettelstore.de/z/tools"
)

var release bool

func main() {
	flag.BoolVar(&release, "r", false, "Release check")
	flag.BoolVar(&tools.Verbose, "v", false, "Verbose output")
	flag.Parse()

	if err := tools.Check(release); err != nil {
		fmt.Fprintln(os.Stderr, err)
	}
}
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Deleted tools/clean/clean.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2023-present Detlef Stern
//-----------------------------------------------------------------------------

// Package main provides a command to clean / remove development artifacts.
package main

import (
	"flag"
	"fmt"
	"os"

	"zettelstore.de/z/tools"
)

func main() {
	flag.BoolVar(&tools.Verbose, "v", false, "Verbose output")
	flag.Parse()

	if err := cmdClean(); err != nil {
		fmt.Fprintln(os.Stderr, err)
	}
}

func cmdClean() error {
	for _, dir := range []string{"bin", "releases"} {
		err := os.RemoveAll(dir)
		if err != nil {
			return err
		}
	}
	out, err := tools.ExecuteCommand(nil, "go", "clean", "./...")
	if err != nil {
		return err
	}
	if len(out) > 0 {
		fmt.Println(out)
	}
	out, err = tools.ExecuteCommand(nil, "go", "clean", "-cache", "-modcache", "-testcache")
	if err != nil {
		return err
	}
	if len(out) > 0 {
		fmt.Println(out)
	}
	return nil
}
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Deleted tools/devtools/devtools.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2023-present Detlef Stern
//-----------------------------------------------------------------------------

// Package main provides a command to install development tools.
package main

import (
	"flag"
	"fmt"
	"os"

	"zettelstore.de/z/tools"
)

func main() {
	flag.BoolVar(&tools.Verbose, "v", false, "Verbose output")
	flag.Parse()

	if err := cmdTools(); err != nil {
		fmt.Fprintln(os.Stderr, err)
	}
}

func cmdTools() error {
	tools := []struct{ name, pack string }{
		{"shadow", "golang.org/x/tools/go/analysis/passes/shadow/cmd/shadow@latest"},
		{"unparam", "mvdan.cc/unparam@latest"},
		{"staticcheck", "honnef.co/go/tools/cmd/staticcheck@latest"},
		{"govulncheck", "golang.org/x/vuln/cmd/govulncheck@latest"},
		{"deadcode", "golang.org/x/tools/cmd/deadcode@latest"},
		{"errcheck", "github.com/kisielk/errcheck@latest"},
	}
	for _, tool := range tools {
		err := doGoInstall(tool.pack)
		if err != nil {
			return err
		}
	}
	return nil
}
func doGoInstall(pack string) error {
	out, err := tools.ExecuteCommand(nil, "go", "install", pack)
	if err != nil {
		fmt.Fprintln(os.Stderr, "Unable to install package", pack)
		if len(out) > 0 {
			fmt.Fprintln(os.Stderr, out)
		}
	}
	return err
}
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Deleted tools/htmllint/htmllint.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2023-present Detlef Stern
//-----------------------------------------------------------------------------

package main

import (
	"context"
	"flag"
	"fmt"
	"log"
	"math/rand/v2"
	"net/url"
	"os"
	"regexp"
	"sort"
	"strings"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/client"
	"zettelstore.de/z/tools"
)

func main() {
	flag.BoolVar(&tools.Verbose, "v", false, "Verbose output")
	flag.Parse()

	if err := cmdValidateHTML(flag.Args()); err != nil {
		fmt.Fprintln(os.Stderr, err)
	}
}
func cmdValidateHTML(args []string) error {
	rawURL := "http://localhost:23123"
	if len(args) > 0 {
		rawURL = args[0]
	}
	u, err := url.Parse(rawURL)
	if err != nil {
		return err
	}
	client := client.NewClient(u)
	_, _, metaList, err := client.QueryZettelData(context.Background(), "")
	if err != nil {
		return err
	}
	zids, perm := calculateZids(metaList)
	for _, kd := range keyDescr {
		msgCount := 0
		fmt.Fprintf(os.Stderr, "Now checking: %s\n", kd.text)
		for _, zid := range zidsToUse(zids, perm, kd.sampleSize) {
			var nmsgs int
			nmsgs, err = validateHTML(client, kd.uc, api.ZettelID(zid))
			if err != nil {
				fmt.Fprintf(os.Stderr, "* error while validating zettel %v with: %v\n", zid, err)
				msgCount += 1
			} else {
				msgCount += nmsgs
			}
		}
		if msgCount == 1 {
			fmt.Fprintln(os.Stderr, "==> found 1 possible issue")
		} else if msgCount > 1 {
			fmt.Fprintf(os.Stderr, "==> found %v possible issues\n", msgCount)
		}
	}
	return nil
}

func calculateZids(metaList []api.ZidMetaRights) ([]string, []int) {
	zids := make([]string, len(metaList))
	for i, m := range metaList {
		zids[i] = string(m.ID)
	}
	sort.Strings(zids)
	return zids, rand.Perm(len(metaList))
}

func zidsToUse(zids []string, perm []int, sampleSize int) []string {
	if sampleSize < 0 || len(perm) <= sampleSize {
		return zids
	}
	if sampleSize == 0 {
		return nil
	}
	result := make([]string, sampleSize)
	for i := range sampleSize {
		result[i] = zids[perm[i]]
	}
	sort.Strings(result)
	return result
}

var keyDescr = []struct {
	uc         urlCreator
	text       string
	sampleSize int
}{
	{getHTMLZettel, "zettel HTML encoding", -1},
	{createJustKey('h'), "zettel web view", -1},
	{createJustKey('i'), "zettel info view", -1},
	{createJustKey('e'), "zettel edit form", 100},
	{createJustKey('c'), "zettel create form", 10},
	{createJustKey('b'), "zettel rename form", 100},
	{createJustKey('d'), "zettel delete dialog", 200},
}

type urlCreator func(*client.Client, api.ZettelID) *api.URLBuilder

func createJustKey(key byte) urlCreator {
	return func(c *client.Client, zid api.ZettelID) *api.URLBuilder {
		return c.NewURLBuilder(key).SetZid(zid)
	}
}

func getHTMLZettel(client *client.Client, zid api.ZettelID) *api.URLBuilder {
	return client.NewURLBuilder('z').SetZid(zid).
		AppendKVQuery(api.QueryKeyEncoding, api.EncodingHTML).
		AppendKVQuery(api.QueryKeyPart, api.PartZettel)
}

func validateHTML(client *client.Client, uc urlCreator, zid api.ZettelID) (int, error) {
	ub := uc(client, zid)
	if tools.Verbose {
		fmt.Fprintf(os.Stderr, "GET %v\n", ub)
	}
	data, err := client.Get(context.Background(), ub)
	if err != nil {
		return 0, err
	}
	if len(data) == 0 {
		return 0, nil
	}
	_, stderr, err := tools.ExecuteFilter(data, nil, "tidy", "-e", "-q", "-lang", "en")
	if err != nil {
		switch err.Error() {
		case "exit status 1":
		case "exit status 2":
		default:
			log.Println("SERR", stderr)
			return 0, err
		}
	}
	if stderr == "" {
		return 0, nil
	}
	if msgs := filterTidyMessages(strings.Split(stderr, "\n")); len(msgs) > 0 {
		fmt.Fprintln(os.Stderr, zid)
		for _, msg := range msgs {
			fmt.Fprintln(os.Stderr, "-", msg)
		}
		return len(msgs), nil
	}
	return 0, nil
}

var reLine = regexp.MustCompile(`line \d+ column \d+ - (.+): (.+)`)

func filterTidyMessages(lines []string) []string {
	result := make([]string, 0, len(lines))
	for _, line := range lines {
		line = strings.TrimSpace(line)
		if line == "" {
			continue
		}
		matches := reLine.FindStringSubmatch(line)
		if len(matches) <= 1 {
			if line == "This document has errors that must be fixed before" ||
				line == "using HTML Tidy to generate a tidied up version." {
				continue
			}
			result = append(result, "!!!"+line)
			continue
		}
		if matches[1] == "Error" {
			if len(matches) > 2 {
				if matches[2] == "<search> is not recognized!" {
					continue
				}
			}
		}
		if matches[1] != "Warning" {
			result = append(result, "???"+line)
			continue
		}
		if len(matches) > 2 {
			switch matches[2] {
			case "discarding unexpected <search>",
				"discarding unexpected </search>",
				`<input> proprietary attribute "inputmode"`:
				continue
			}
		}
		result = append(result, line)
	}
	return result
}
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Deleted tools/testapi/testapi.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2023-present Detlef Stern
//-----------------------------------------------------------------------------

// Package main provides a command to test the API
package main

import (
	"errors"
	"flag"
	"fmt"
	"io"
	"net"
	"os"
	"os/exec"
	"strings"
	"time"

	"zettelstore.de/z/tools"
)

func main() {
	flag.BoolVar(&tools.Verbose, "v", false, "Verbose output")
	flag.Parse()

	if err := cmdTestAPI(); err != nil {
		fmt.Fprintln(os.Stderr, err)
	}
}

type zsInfo struct {
	cmd          *exec.Cmd
	out          strings.Builder
	adminAddress string
}

func cmdTestAPI() error {
	var err error
	var info zsInfo
	needServer := !addressInUse(":23123")
	if needServer {
		err = startZettelstore(&info)
	}
	if err != nil {
		return err
	}
	err = tools.CheckGoTest("zettelstore.de/z/tests/client", "-base-url", "http://127.0.0.1:23123")
	if needServer {
		err1 := stopZettelstore(&info)
		if err == nil {
			err = err1
		}
	}
	return err
}

func startZettelstore(info *zsInfo) error {
	info.adminAddress = ":2323"
	name, arg := "go", []string{
		"run", "cmd/zettelstore/main.go", "run",
		"-c", "./testdata/testbox/19700101000000.zettel", "-a", info.adminAddress[1:]}
	tools.LogCommand("FORK", nil, name, arg)
	cmd := tools.PrepareCommand(tools.EnvGoVCS, name, arg, nil, &info.out, os.Stderr)
	if !tools.Verbose {
		cmd.Stderr = nil
	}
	err := cmd.Start()
	time.Sleep(2 * time.Second)
	for range 100 {
		time.Sleep(time.Millisecond * 100)
		if addressInUse(info.adminAddress) {
			info.cmd = cmd
			return err
		}
	}
	time.Sleep(4 * time.Second) // Wait for all zettel to be indexed.
	return errors.New("zettelstore did not start")
}

func stopZettelstore(i *zsInfo) error {
	conn, err := net.Dial("tcp", i.adminAddress)
	if err != nil {
		fmt.Println("Unable to stop Zettelstore")
		return err
	}
	io.WriteString(conn, "shutdown\n")
	conn.Close()
	err = i.cmd.Wait()
	return err
}

func addressInUse(address string) bool {
	conn, err := net.Dial("tcp", address)
	if err != nil {
		return false
	}
	conn.Close()
	return true
}
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Deleted tools/tools.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2023-present Detlef Stern
//-----------------------------------------------------------------------------

// Package tools provides a collection of functions to build needed tools.
package tools

import (
	"bytes"
	"errors"
	"fmt"
	"io"
	"os"
	"os/exec"
	"strings"

	"zettelstore.de/z/strfun"
)

var EnvDirectProxy = []string{"GOPROXY=direct"}
var EnvGoVCS = []string{"GOVCS=zettelstore.de:fossil"}
var Verbose bool

func ExecuteCommand(env []string, name string, arg ...string) (string, error) {
	LogCommand("EXEC", env, name, arg)
	var out strings.Builder
	cmd := PrepareCommand(env, name, arg, nil, &out, os.Stderr)
	err := cmd.Run()
	return out.String(), err
}

func ExecuteFilter(data []byte, env []string, name string, arg ...string) (string, string, error) {
	LogCommand("EXEC", env, name, arg)
	var stdout, stderr strings.Builder
	cmd := PrepareCommand(env, name, arg, bytes.NewReader(data), &stdout, &stderr)
	err := cmd.Run()
	return stdout.String(), stderr.String(), err
}

func PrepareCommand(env []string, name string, arg []string, in io.Reader, stdout, stderr io.Writer) *exec.Cmd {
	if len(env) > 0 {
		env = append(env, os.Environ()...)
	}
	cmd := exec.Command(name, arg...)
	cmd.Env = env
	cmd.Stdin = in
	cmd.Stdout = stdout
	cmd.Stderr = stderr
	return cmd
}
func LogCommand(exec string, env []string, name string, arg []string) {
	if Verbose {
		if len(env) > 0 {
			for i, e := range env {
				fmt.Fprintf(os.Stderr, "ENV%d %v\n", i+1, e)
			}
		}
		fmt.Fprintln(os.Stderr, exec, name, arg)
	}
}

func Check(forRelease bool) error {
	if err := CheckGoTest("./..."); err != nil {
		return err
	}
	if err := checkGoVet(); err != nil {
		return err
	}
	if err := checkShadow(forRelease); err != nil {
		return err
	}
	if err := checkStaticcheck(); err != nil {
		return err
	}
	if err := checkUnparam(forRelease); err != nil {
		return err
	}
	if forRelease {
		if err := checkGoVulncheck(); err != nil {
			return err
		}
	}
	return checkFossilExtra()
}

func CheckGoTest(pkg string, testParams ...string) error {
	var env []string
	env = append(env, EnvDirectProxy...)
	env = append(env, EnvGoVCS...)
	args := []string{"test", pkg}
	args = append(args, testParams...)
	out, err := ExecuteCommand(env, "go", args...)
	if err != nil {
		for _, line := range strfun.SplitLines(out) {
			if strings.HasPrefix(line, "ok") || strings.HasPrefix(line, "?") {
				continue
			}
			fmt.Fprintln(os.Stderr, line)
		}
	}
	return err
}
func checkGoVet() error {
	out, err := ExecuteCommand(EnvGoVCS, "go", "vet", "./...")
	if err != nil {
		fmt.Fprintln(os.Stderr, "Some checks failed")
		if len(out) > 0 {
			fmt.Fprintln(os.Stderr, out)
		}
	}
	return err
}

func checkShadow(forRelease bool) error {
	path, err := findExecStrict("shadow", forRelease)
	if path == "" {
		return err
	}
	out, err := ExecuteCommand(EnvGoVCS, path, "-strict", "./...")
	if err != nil {
		fmt.Fprintln(os.Stderr, "Some shadowed variables found")
		if len(out) > 0 {
			fmt.Fprintln(os.Stderr, out)
		}
	}
	return err
}

func checkStaticcheck() error {
	out, err := ExecuteCommand(EnvGoVCS, "staticcheck", "./...")
	if err != nil {
		fmt.Fprintln(os.Stderr, "Some staticcheck problems found")
		if len(out) > 0 {
			fmt.Fprintln(os.Stderr, out)
		}
	}
	return err
}

func checkUnparam(forRelease bool) error {
	path, err := findExecStrict("unparam", forRelease)
	if path == "" {
		return err
	}
	out, err := ExecuteCommand(EnvGoVCS, path, "./...")
	if err != nil {
		fmt.Fprintln(os.Stderr, "Some unparam problems found")
		if len(out) > 0 {
			fmt.Fprintln(os.Stderr, out)
		}
	}
	if forRelease {
		if out2, err2 := ExecuteCommand(nil, path, "-exported", "-tests", "./..."); err2 != nil {
			fmt.Fprintln(os.Stderr, "Some optional unparam problems found")
			if len(out2) > 0 {
				fmt.Fprintln(os.Stderr, out2)
			}
		}
	}
	return err
}

func checkGoVulncheck() error {
	out, err := ExecuteCommand(EnvGoVCS, "govulncheck", "./...")
	if err != nil {
		fmt.Fprintln(os.Stderr, "Some checks failed")
		if len(out) > 0 {
			fmt.Fprintln(os.Stderr, out)
		}
	}
	return err
}
func findExec(cmd string) string {
	if path, err := ExecuteCommand(nil, "which", cmd); err == nil && path != "" {
		return strings.TrimSpace(path)
	}
	return ""
}

func findExecStrict(cmd string, forRelease bool) (string, error) {
	path := findExec(cmd)
	if path != "" || !forRelease {
		return path, nil
	}
	return "", errors.New("Command '" + cmd + "' not installed, but required for release")
}

func checkFossilExtra() error {
	out, err := ExecuteCommand(nil, "fossil", "extra")
	if err != nil {
		fmt.Fprintln(os.Stderr, "Unable to execute 'fossil extra'")
		return err
	}
	if len(out) > 0 {
		fmt.Fprint(os.Stderr, "Warning: unversioned file(s):")
		for i, extra := range strfun.SplitLines(out) {
			if i > 0 {
				fmt.Fprint(os.Stderr, ",")
			}
			fmt.Fprintf(os.Stderr, " %q", extra)
		}
		fmt.Fprintln(os.Stderr)
	}
	return nil
}
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<












































































































































































































































































































































































































































Changes to usecase/authenticate.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package usecase

import (
	"context"
	"math/rand/v2"
	"net/http"
	"time"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/z/auth"
	"zettelstore.de/z/auth/cred"
	"zettelstore.de/z/logger"








<
<
<






|







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package usecase

import (
	"context"
	"math/rand"
	"net/http"
	"time"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/z/auth"
	"zettelstore.de/z/auth/cred"
	"zettelstore.de/z/logger"
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		"$2a$10$WHcSO3G9afJ3zlOYQR1suuf83bCXED2jmzjti/MH4YH4l2mivDuze", id.Invalid, "", "")
}

// addDelay after credential checking to allow some CPU time for other tasks.
// durDelay is the normal delay, if time spend for checking is smaller than
// the minimum delay minDelay. In addition some jitter (+/- 50 ms) is added.
func addDelay(start time.Time, durDelay, minDelay time.Duration) {
	jitter := time.Duration(rand.IntN(100)-50) * time.Millisecond
	if elapsed := time.Since(start); elapsed+minDelay < durDelay {
		time.Sleep(durDelay - elapsed + jitter)
	} else {
		time.Sleep(minDelay + jitter)
	}
}








|







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		"$2a$10$WHcSO3G9afJ3zlOYQR1suuf83bCXED2jmzjti/MH4YH4l2mivDuze", id.Invalid, "", "")
}

// addDelay after credential checking to allow some CPU time for other tasks.
// durDelay is the normal delay, if time spend for checking is smaller than
// the minimum delay minDelay. In addition some jitter (+/- 50 ms) is added.
func addDelay(start time.Time, durDelay, minDelay time.Duration) {
	jitter := time.Duration(rand.Intn(100)-50) * time.Millisecond
	if elapsed := time.Since(start); elapsed+minDelay < durDelay {
		time.Sleep(durDelay - elapsed + jitter)
	} else {
		time.Sleep(minDelay + jitter)
	}
}

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	IsAuthenticatedAndValid
	IsAuthenticatedAndInvalid
)

// Run executes the use case.
func (uc *IsAuthenticated) Run(ctx context.Context) IsAuthenticatedResult {
	if !uc.authz.WithAuth() {
		uc.log.Info().Str("auth", "disabled").Msg("IsAuthenticated")
		return IsAuthenticatedDisabled
	}
	if uc.port.GetUser(ctx) == nil {
		uc.log.Info().Msg("IsAuthenticated is false")
		return IsAuthenticatedAndInvalid
	}
	uc.log.Info().Msg("IsAuthenticated is true")
	return IsAuthenticatedAndValid
}







|



|


|


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	IsAuthenticatedAndValid
	IsAuthenticatedAndInvalid
)

// Run executes the use case.
func (uc *IsAuthenticated) Run(ctx context.Context) IsAuthenticatedResult {
	if !uc.authz.WithAuth() {
		uc.log.Sense().Str("auth", "disabled").Msg("IsAuthenticated")
		return IsAuthenticatedDisabled
	}
	if uc.port.GetUser(ctx) == nil {
		uc.log.Sense().Msg("IsAuthenticated is false")
		return IsAuthenticatedAndInvalid
	}
	uc.log.Sense().Msg("IsAuthenticated is true")
	return IsAuthenticatedAndValid
}

Changes to usecase/create_zettel.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package usecase

import (
	"context"
	"time"








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<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package usecase

import (
	"context"
	"time"
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	content.TrimSpace()
	return zettel.Zettel{Meta: m, Content: content}
}

func updateMetaRoleTagsSyntax(m, orig *meta.Meta) {
	m.SetNonEmpty(api.KeyRole, orig.GetDefault(api.KeyRole, ""))
	m.SetNonEmpty(api.KeyTags, orig.GetDefault(api.KeyTags, ""))
	m.SetNonEmpty(api.KeySyntax, orig.GetDefault(api.KeySyntax, meta.DefaultSyntax))
}

func prependTitle(title, s0, s1 string) string {
	if len(title) > 0 {
		return s1 + title
	}
	return s0







|







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	content.TrimSpace()
	return zettel.Zettel{Meta: m, Content: content}
}

func updateMetaRoleTagsSyntax(m, orig *meta.Meta) {
	m.SetNonEmpty(api.KeyRole, orig.GetDefault(api.KeyRole, ""))
	m.SetNonEmpty(api.KeyTags, orig.GetDefault(api.KeyTags, ""))
	m.SetNonEmpty(api.KeySyntax, orig.GetDefault(api.KeySyntax, ""))
}

func prependTitle(title, s0, s1 string) string {
	if len(title) > 0 {
		return s1 + title
	}
	return s0

Changes to usecase/delete_zettel.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package usecase

import (
	"context"









<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package usecase

import (
	"context"

Changes to usecase/evaluate.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package usecase

import (
	"context"









<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package usecase

import (
	"context"

Changes to usecase/get_all_zettel.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package usecase

import (
	"context"









<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package usecase

import (
	"context"

Changes to usecase/get_special_zettel.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2023-present Detlef Stern
//-----------------------------------------------------------------------------

package usecase

import (
	"context"









<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package usecase

import (
	"context"

Changes to usecase/get_user.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package usecase

import (
	"context"









<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package usecase

import (
	"context"

Changes to usecase/get_zettel.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package usecase

import (
	"context"









<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package usecase

import (
	"context"

Changes to usecase/lists.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package usecase

import (
	"context"









<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package usecase

import (
	"context"

Changes to usecase/parse_zettel.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package usecase

import (
	"context"









<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package usecase

import (
	"context"

Changes to usecase/query.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package usecase

import (
	"context"
	"errors"








<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package usecase

import (
	"context"
	"errors"
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func (uc *Query) processContextDirective(ctx context.Context, spec *query.ContextSpec, metaSeq []*meta.Meta) []*meta.Meta {
	return spec.Execute(ctx, metaSeq, uc.port)
}

func (uc *Query) processItemsDirective(ctx context.Context, _ *query.ItemsSpec, metaSeq []*meta.Meta) []*meta.Meta {
	result := make([]*meta.Meta, 0, len(metaSeq))
	for _, m := range metaSeq {
		zn, err := uc.ucEvaluate.Run(ctx, m.Zid, m.GetDefault(api.KeySyntax, meta.DefaultSyntax))
		if err != nil {
			continue
		}
		for _, ref := range collect.Order(zn) {
			if collectedZid, err2 := id.Parse(ref.URL.Path); err2 == nil {
				if z, err3 := uc.port.GetZettel(ctx, collectedZid); err3 == nil {
					result = append(result, z.Meta)







|







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func (uc *Query) processContextDirective(ctx context.Context, spec *query.ContextSpec, metaSeq []*meta.Meta) []*meta.Meta {
	return spec.Execute(ctx, metaSeq, uc.port)
}

func (uc *Query) processItemsDirective(ctx context.Context, _ *query.ItemsSpec, metaSeq []*meta.Meta) []*meta.Meta {
	result := make([]*meta.Meta, 0, len(metaSeq))
	for _, m := range metaSeq {
		zn, err := uc.ucEvaluate.Run(ctx, m.Zid, m.GetDefault(api.KeySyntax, ""))
		if err != nil {
			continue
		}
		for _, ref := range collect.Order(zn) {
			if collectedZid, err2 := id.Parse(ref.URL.Path); err2 == nil {
				if z, err3 := uc.port.GetZettel(ctx, collectedZid); err3 == nil {
					result = append(result, z.Meta)
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			ast.Walk(&v, &is)
			if v.found {
				result = append(result, cand)
				continue candLoop
			}
		}

		syntax := zettel.Meta.GetDefault(api.KeySyntax, meta.DefaultSyntax)
		if !parser.IsASTParser(syntax) {
			continue
		}
		zn := uc.ucEvaluate.RunZettel(ctx, zettel, syntax)
		ast.Walk(&v, &zn.Ast)
		if v.found {
			result = append(result, cand)







|







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			ast.Walk(&v, &is)
			if v.found {
				result = append(result, cand)
				continue candLoop
			}
		}

		syntax := zettel.Meta.GetDefault(api.KeySyntax, "")
		if !parser.IsASTParser(syntax) {
			continue
		}
		zn := uc.ucEvaluate.RunZettel(ctx, zettel, syntax)
		ast.Walk(&v, &zn.Ast)
		if v.found {
			result = append(result, cand)

Changes to usecase/refresh.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package usecase

import (
	"context"









<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package usecase

import (
	"context"

Changes to usecase/reindex.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2023-present Detlef Stern
//-----------------------------------------------------------------------------

package usecase

import (
	"context"









<
<
<







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8



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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package usecase

import (
	"context"

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func NewReIndex(log *logger.Logger, port ReIndexPort) ReIndex {
	return ReIndex{log: log, port: port}
}

// Run executes the use case.
func (uc *ReIndex) Run(ctx context.Context, zid id.Zid) error {
	err := uc.port.ReIndex(ctx, zid)
	uc.log.Info().User(ctx).Err(err).Zid(zid).Msg("ReIndex zettel")
	return err
}







|


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func NewReIndex(log *logger.Logger, port ReIndexPort) ReIndex {
	return ReIndex{log: log, port: port}
}

// Run executes the use case.
func (uc *ReIndex) Run(ctx context.Context, zid id.Zid) error {
	err := uc.port.ReIndex(ctx, zid)
	uc.log.Sense().User(ctx).Err(err).Zid(zid).Msg("ReIndex zettel")
	return err
}

Changes to usecase/rename_zettel.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package usecase

import (
	"context"









<
<
<







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8



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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package usecase

import (
	"context"

Changes to usecase/update_zettel.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package usecase

import (
	"context"









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<







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package usecase

import (
	"context"

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	}

	if !hasContent {
		zettel.Content = oldZettel.Content
	}
	zettel.Content.TrimSpace()
	err = uc.port.UpdateZettel(ctx, zettel)
	uc.log.Info().User(ctx).Zid(m.Zid).Err(err).Msg("Update zettel")
	return err
}







|


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	}

	if !hasContent {
		zettel.Content = oldZettel.Content
	}
	zettel.Content.TrimSpace()
	err = uc.port.UpdateZettel(ctx, zettel)
	uc.log.Sense().User(ctx).Zid(m.Zid).Err(err).Msg("Update zettel")
	return err
}

Changes to usecase/usecase.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

// Package usecase provides (business) use cases for the zettelstore.
package usecase








<
<
<




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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package usecase provides (business) use cases for the zettelstore.
package usecase

Changes to usecase/version.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

package usecase

import (
	"regexp"
	"strconv"








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<







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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package usecase

import (
	"regexp"
	"strconv"

Deleted web/adapter/adapter.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2024-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2024-present Detlef Stern
//-----------------------------------------------------------------------------

// Package adapter provides handlers for web requests, and some helper tools.
package adapter

import (
	"context"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/z/usecase"
	"zettelstore.de/z/zettel/meta"
)

// TryReIndex executes a re-index if the appropriate query action is given.
func TryReIndex(ctx context.Context, actions []string, metaSeq []*meta.Meta, reIndex *usecase.ReIndex) ([]string, error) {
	if lenActions := len(actions); lenActions > 0 {
		tempActions := make([]string, 0, lenActions)
		hasReIndex := false
		for _, act := range actions {
			if !hasReIndex && act == api.ReIndexAction {
				hasReIndex = true
				var errAction error
				for _, m := range metaSeq {
					if err := reIndex.Run(ctx, m.Zid); err != nil {
						errAction = err
					}
				}
				if errAction != nil {
					return nil, errAction
				}
				continue
			}
			tempActions = append(tempActions, act)
		}
		return tempActions, nil
	}
	return nil, nil
}
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Changes to web/adapter/api/api.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

// Package api provides api handlers for web requests.
package api

import (
	"bytes"








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package api provides api handlers for web requests.
package api

import (
	"bytes"
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		rtConfig: rtConfig,
		policy:   pol,

		tokenLifetime: kernel.Main.GetConfig(kernel.WebService, kernel.WebTokenLifetimeAPI).(time.Duration),
	}
	return a
}




// NewURLBuilder creates a new URL builder object with the given key.
func (a *API) NewURLBuilder(key byte) *api.URLBuilder { return a.b.NewURLBuilder(key) }

func (a *API) getAuthData(ctx context.Context) *server.AuthData {
	return server.GetAuthData(ctx)
}







>
>
>







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		rtConfig: rtConfig,
		policy:   pol,

		tokenLifetime: kernel.Main.GetConfig(kernel.WebService, kernel.WebTokenLifetimeAPI).(time.Duration),
	}
	return a
}

// GetURLPrefix returns the configured URL prefix of the web server.
func (a *API) GetURLPrefix() string { return a.b.GetURLPrefix() }

// NewURLBuilder creates a new URL builder object with the given key.
func (a *API) NewURLBuilder(key byte) *api.URLBuilder { return a.b.NewURLBuilder(key) }

func (a *API) getAuthData(ctx context.Context) *server.AuthData {
	return server.GetAuthData(ctx)
}

Changes to web/adapter/api/command.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package api

import (
	"context"
	"net/http"








<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package api

import (
	"context"
	"net/http"

Changes to web/adapter/api/create_zettel.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package api

import (
	"net/http"









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<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package api

import (
	"net/http"

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		if err != nil {
			a.reportUsecaseError(w, err)
			return
		}

		var result []byte
		var contentType string
		location := a.NewURLBuilder('z').SetZid(newZid.ZettelID())
		switch enc {
		case api.EncoderPlain:
			result = newZid.Bytes()
			contentType = content.PlainText
		case api.EncoderData:
			result = []byte(sx.Int64(newZid).String())
			contentType = content.SXPF
		default:
			panic(encStr)
		}

		h := adapter.PrepareHeader(w, contentType)
		h.Set(api.HeaderLocation, location.String())
		w.WriteHeader(http.StatusCreated)
		if _, err = w.Write(result); err != nil {
			a.log.Error().Err(err).Zid(newZid).Msg("Create Zettel")
		}
	}
}







|





|













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		if err != nil {
			a.reportUsecaseError(w, err)
			return
		}

		var result []byte
		var contentType string
		location := a.NewURLBuilder('z').SetZid(api.ZettelID(newZid.String()))
		switch enc {
		case api.EncoderPlain:
			result = newZid.Bytes()
			contentType = content.PlainText
		case api.EncoderData:
			result = []byte(sx.Int64(newZid).Repr())
			contentType = content.SXPF
		default:
			panic(encStr)
		}

		h := adapter.PrepareHeader(w, contentType)
		h.Set(api.HeaderLocation, location.String())
		w.WriteHeader(http.StatusCreated)
		if _, err = w.Write(result); err != nil {
			a.log.Error().Err(err).Zid(newZid).Msg("Create Zettel")
		}
	}
}

Changes to web/adapter/api/delete_zettel.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package api

import (
	"net/http"









<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package api

import (
	"net/http"

Changes to web/adapter/api/get_data.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

package api

import (
	"net/http"









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<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package api

import (
	"net/http"

Changes to web/adapter/api/get_zettel.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package api

import (
	"bytes"
	"context"








<
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<







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package api

import (
	"bytes"
	"context"
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	"zettelstore.de/z/box"
	"zettelstore.de/z/encoder"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/usecase"
	"zettelstore.de/z/web/adapter"
	"zettelstore.de/z/web/content"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

// MakeGetZettelHandler creates a new HTTP handler to return a zettel in various encodings.
func (a *API) MakeGetZettelHandler(getZettel usecase.GetZettel, parseZettel usecase.ParseZettel, evaluate usecase.Evaluate) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		zid, err := id.Parse(r.URL.Path[1:])
		if err != nil {







<







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	"zettelstore.de/z/box"
	"zettelstore.de/z/encoder"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/usecase"
	"zettelstore.de/z/web/adapter"
	"zettelstore.de/z/web/content"
	"zettelstore.de/z/zettel/id"

)

// MakeGetZettelHandler creates a new HTTP handler to return a zettel in various encodings.
func (a *API) MakeGetZettelHandler(getZettel usecase.GetZettel, parseZettel usecase.ParseZettel, evaluate usecase.Evaluate) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		zid, err := id.Parse(r.URL.Path[1:])
		if err != nil {
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		}

	case partMeta:
		contentType = content.PlainText
		_, err = z.Meta.Write(&buf)

	case partContent:
		contentType = content.MIMEFromSyntax(z.Meta.GetDefault(api.KeySyntax, meta.DefaultSyntax))
		_, err = z.Content.Write(&buf)
	}

	if err != nil {
		a.log.Error().Err(err).Zid(zid).Msg("Unable to store plain zettel/part in buffer")
		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
		return
	}
	if err = writeBuffer(w, &buf, contentType); err != nil {
		a.log.Error().Err(err).Zid(zid).Msg("Write Plain data")
	}
}







|




|







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		}

	case partMeta:
		contentType = content.PlainText
		_, err = z.Meta.Write(&buf)

	case partContent:
		contentType = content.MIMEFromSyntax(z.Meta.GetDefault(api.KeySyntax, ""))
		_, err = z.Content.Write(&buf)
	}

	if err != nil {
		a.log.Fatal().Err(err).Zid(zid).Msg("Unable to store plain zettel/part in buffer")
		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
		return
	}
	if err = writeBuffer(w, &buf, contentType); err != nil {
		a.log.Error().Err(err).Zid(zid).Msg("Write Plain data")
	}
}
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		_, err = encdr.WriteZettel(&buf, zn, evalMeta)
	case partMeta:
		_, err = encdr.WriteMeta(&buf, zn.InhMeta, evalMeta)
	case partContent:
		_, err = encdr.WriteContent(&buf, zn)
	}
	if err != nil {
		a.log.Error().Err(err).Zid(zn.Zid).Msg("Unable to store data in buffer")
		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
		return
	}
	if buf.Len() == 0 {
		w.WriteHeader(http.StatusNoContent)
		return
	}

	if err = writeBuffer(w, &buf, content.MIMEFromEncoding(enc)); err != nil {
		a.log.Error().Err(err).Zid(zn.Zid).Msg("Write Encoded Zettel")
	}
}







|












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		_, err = encdr.WriteZettel(&buf, zn, evalMeta)
	case partMeta:
		_, err = encdr.WriteMeta(&buf, zn.InhMeta, evalMeta)
	case partContent:
		_, err = encdr.WriteContent(&buf, zn)
	}
	if err != nil {
		a.log.Fatal().Err(err).Zid(zn.Zid).Msg("Unable to store data in buffer")
		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
		return
	}
	if buf.Len() == 0 {
		w.WriteHeader(http.StatusNoContent)
		return
	}

	if err = writeBuffer(w, &buf, content.MIMEFromEncoding(enc)); err != nil {
		a.log.Error().Err(err).Zid(zn.Zid).Msg("Write Encoded Zettel")
	}
}

Changes to web/adapter/api/login.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package api

import (
	"net/http"
	"time"








<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package api

import (
	"net/http"
	"time"

Changes to web/adapter/api/query.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

package api

import (
	"bytes"
	"fmt"








<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package api

import (
	"bytes"
	"fmt"
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// MakeQueryHandler creates a new HTTP handler to perform a query.
func (a *API) MakeQueryHandler(queryMeta *usecase.Query, tagZettel *usecase.TagZettel, roleZettel *usecase.RoleZettel, reIndex *usecase.ReIndex) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		ctx := r.Context()
		urlQuery := r.URL.Query()
		if a.handleTagZettel(w, r, tagZettel, urlQuery) || a.handleRoleZettel(w, r, roleZettel, urlQuery) {



			return
		}

		sq := adapter.GetQuery(urlQuery)

		metaSeq, err := queryMeta.Run(ctx, sq)
		if err != nil {
			a.reportUsecaseError(w, err)
			return
		}

		actions, err := adapter.TryReIndex(ctx, sq.Actions(), metaSeq, reIndex)
		if err != nil {
			a.reportUsecaseError(w, err)
			return
		}
		if len(actions) > 0 {
			if len(metaSeq) > 0 {
				for _, act := range actions {
					if act == api.RedirectAction {
						zid := metaSeq[0].Zid
						ub := a.NewURLBuilder('z').SetZid(zid.ZettelID())
						a.redirectFound(w, r, ub, zid)
						return
					}
				}
			}
		}

		var encoder zettelEncoder
		var contentType string
		switch enc, _ := getEncoding(r, urlQuery); enc {
		case api.EncoderPlain:
			encoder = &plainZettelEncoder{}
			contentType = content.PlainText

		case api.EncoderData:
			encoder = &dataZettelEncoder{

				sq:        sq,
				getRights: func(m *meta.Meta) api.ZettelRights { return a.getRights(ctx, m) },
			}
			contentType = content.SXPF

		default:
			http.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest)
			return
		}

		var buf bytes.Buffer
		err = queryAction(&buf, encoder, metaSeq, actions)
		if err != nil {
			a.log.Error().Err(err).Str("query", sq.String()).Msg("execute query action")
			http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
		}

		if err = writeBuffer(w, &buf, contentType); err != nil {
			a.log.Error().Err(err).Msg("write result buffer")
		}
	}
}
func queryAction(w io.Writer, enc zettelEncoder, ml []*meta.Meta, actions []string) error {
	min, max := -1, -1
	if len(actions) > 0 {
		acts := make([]string, 0, len(actions))
		for _, act := range actions {
			if strings.HasPrefix(act, api.MinAction) {
				if num, err := strconv.Atoi(act[3:]); err == nil && num > 0 {
					min = num
					continue
				}
			}
			if strings.HasPrefix(act, api.MaxAction) {
				if num, err := strconv.Atoi(act[3:]); err == nil && num > 0 {
					max = num
					continue
				}
			}
			acts = append(acts, act)
		}
		for _, act := range acts {
			if act == api.KeysAction {

				return encodeKeysArrangement(w, enc, ml, act)






			}
			switch key := strings.ToLower(act); meta.Type(key) {
			case meta.TypeWord, meta.TypeTagSet:
				return encodeMetaKeyArrangement(w, enc, ml, key, min, max)
			}
		}
	}







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)

// MakeQueryHandler creates a new HTTP handler to perform a query.
func (a *API) MakeQueryHandler(queryMeta *usecase.Query, tagZettel *usecase.TagZettel, roleZettel *usecase.RoleZettel, reIndex *usecase.ReIndex) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		ctx := r.Context()
		urlQuery := r.URL.Query()
		if a.handleTagZettel(w, r, tagZettel, urlQuery) {
			return
		}
		if a.handleRoleZettel(w, r, roleZettel, urlQuery) {
			return
		}

		sq := adapter.GetQuery(urlQuery)

		metaSeq, err := queryMeta.Run(ctx, sq)
		if err != nil {
			a.reportUsecaseError(w, err)
			return
		}



















		var encoder zettelEncoder
		var contentType string
		switch enc, _ := getEncoding(r, urlQuery); enc {
		case api.EncoderPlain:
			encoder = &plainZettelEncoder{}
			contentType = content.PlainText

		case api.EncoderData:
			encoder = &dataZettelEncoder{
				sf:        sx.MakeMappedFactory(256),
				sq:        sq,
				getRights: func(m *meta.Meta) api.ZettelRights { return a.getRights(ctx, m) },
			}
			contentType = content.SXPF

		default:
			http.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest)
			return
		}

		var buf bytes.Buffer
		err = queryAction(&buf, encoder, metaSeq, sq, func(zid id.Zid) error { return reIndex.Run(ctx, zid) })
		if err != nil {
			a.log.Error().Err(err).Str("query", sq.String()).Msg("execute query action")
			http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
		}

		if err = writeBuffer(w, &buf, contentType); err != nil {
			a.log.Error().Err(err).Msg("write result buffer")
		}
	}
}
func queryAction(w io.Writer, enc zettelEncoder, ml []*meta.Meta, sq *query.Query, reindex func(id.Zid) error) error {
	min, max := -1, -1
	if actions := sq.Actions(); len(actions) > 0 {
		acts := make([]string, 0, len(actions))
		for _, act := range actions {
			if strings.HasPrefix(act, "MIN") {
				if num, err := strconv.Atoi(act[3:]); err == nil && num > 0 {
					min = num
					continue
				}
			}
			if strings.HasPrefix(act, "MAX") {
				if num, err := strconv.Atoi(act[3:]); err == nil && num > 0 {
					max = num
					continue
				}
			}
			acts = append(acts, act)
		}
		for _, act := range acts {
			switch act {
			case "KEYS":
				return encodeKeysArrangement(w, enc, ml, act)
			case "REINDEX":
				for _, m := range ml {
					if err := reindex(m.Zid); err != nil {
						return err
					}
				}
			}
			switch key := strings.ToLower(act); meta.Type(key) {
			case meta.TypeWord, meta.TypeTagSet:
				return encodeMetaKeyArrangement(w, enc, ml, key, min, max)
			}
		}
	}
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			return err
		}
	}
	return nil
}

type dataZettelEncoder struct {

	sq        *query.Query
	getRights func(*meta.Meta) api.ZettelRights
}

func (dze *dataZettelEncoder) writeMetaList(w io.Writer, ml []*meta.Meta) error {

	result := make(sx.Vector, len(ml)+1)
	result[0] = sx.SymbolList
	symID, symZettel := sx.MakeSymbol("id"), sx.MakeSymbol("zettel")
	for i, m := range ml {
		msz := sexp.EncodeMetaRights(api.MetaRights{
			Meta:   m.Map(),
			Rights: dze.getRights(m),
		})
		msz = sx.Cons(sx.MakeList(symID, sx.Int64(m.Zid)), msz.Cdr()).Cons(symZettel)
		result[i+1] = msz
	}

	_, err := sx.Print(w, sx.MakeList(
		sx.MakeSymbol("meta-list"),
		sx.MakeList(sx.MakeSymbol("query"), sx.String(dze.sq.String())),
		sx.MakeList(sx.MakeSymbol("human"), sx.String(dze.sq.Human())),
		sx.MakeList(result...),
	))
	return err
}
func (dze *dataZettelEncoder) writeArrangement(w io.Writer, act string, arr meta.Arrangement) error {

	result := sx.Nil()
	for aggKey, metaList := range arr {
		sxMeta := sx.Nil()
		for i := len(metaList) - 1; i >= 0; i-- {
			sxMeta = sxMeta.Cons(sx.Int64(metaList[i].Zid))
		}
		sxMeta = sxMeta.Cons(sx.String(aggKey))
		result = result.Cons(sxMeta)
	}
	_, err := sx.Print(w, sx.MakeList(
		sx.MakeSymbol("aggregate"),
		sx.String(act),
		sx.MakeList(sx.MakeSymbol("query"), sx.String(dze.sq.String())),
		sx.MakeList(sx.MakeSymbol("human"), sx.String(dze.sq.Human())),
		result.Cons(sx.SymbolList),
	))
	return err
}

func (a *API) handleTagZettel(w http.ResponseWriter, r *http.Request, tagZettel *usecase.TagZettel, vals url.Values) bool {
	tag := vals.Get(api.QueryKeyTag)
	if tag == "" {
		return false
	}
	ctx := r.Context()
	z, err := tagZettel.Run(ctx, tag)
	if err != nil {
		a.reportUsecaseError(w, err)
		return true
	}
	zid := z.Meta.Zid

	newURL := a.NewURLBuilder('z').SetZid(zid.ZettelID())
	for key, slVals := range vals {
		if key == api.QueryKeyTag {
			continue
		}
		for _, val := range slVals {
			newURL.AppendKVQuery(key, val)
		}
	}
	a.redirectFound(w, r, newURL, zid)



	return true
}

func (a *API) handleRoleZettel(w http.ResponseWriter, r *http.Request, roleZettel *usecase.RoleZettel, vals url.Values) bool {
	role := vals.Get(api.QueryKeyRole)
	if role == "" {
		return false
	}
	ctx := r.Context()
	z, err := roleZettel.Run(ctx, role)
	if err != nil {
		a.reportUsecaseError(w, err)
		return true
	}
	zid := z.Meta.Zid

	newURL := a.NewURLBuilder('z').SetZid(zid.ZettelID())
	for key, slVals := range vals {
		if key == api.QueryKeyRole {
			continue
		}
		for _, val := range slVals {
			newURL.AppendKVQuery(key, val)
		}
	}
	a.redirectFound(w, r, newURL, zid)
	return true
}

func (a *API) redirectFound(w http.ResponseWriter, r *http.Request, ub *api.URLBuilder, zid id.Zid) {
	w.Header().Set(api.HeaderContentType, content.PlainText)
	http.Redirect(w, r, ub.String(), http.StatusFound)
	if _, err := io.WriteString(w, zid.String()); err != nil {
		a.log.Error().Err(err).Msg("redirect body")
	}

}







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			return err
		}
	}
	return nil
}

type dataZettelEncoder struct {
	sf        sx.SymbolFactory
	sq        *query.Query
	getRights func(*meta.Meta) api.ZettelRights
}

func (dze *dataZettelEncoder) writeMetaList(w io.Writer, ml []*meta.Meta) error {
	sf := dze.sf
	result := make([]sx.Object, len(ml)+1)
	result[0] = sf.MustMake("list")
	symID, symZettel := sf.MustMake("id"), sf.MustMake("zettel")
	for i, m := range ml {
		msz := sexp.EncodeMetaRights(api.MetaRights{
			Meta:   m.Map(),
			Rights: dze.getRights(m),
		})
		msz = sx.Cons(sx.MakeList(symID, sx.Int64(m.Zid)), msz.Cdr()).Cons(symZettel)
		result[i+1] = msz
	}

	_, err := sx.Print(w, sx.MakeList(
		sf.MustMake("meta-list"),
		sx.MakeList(sf.MustMake("query"), sx.String(dze.sq.String())),
		sx.MakeList(sf.MustMake("human"), sx.String(dze.sq.Human())),
		sx.MakeList(result...),
	))
	return err
}
func (dze *dataZettelEncoder) writeArrangement(w io.Writer, act string, arr meta.Arrangement) error {
	sf := dze.sf
	result := sx.Nil()
	for aggKey, metaList := range arr {
		sxMeta := sx.Nil()
		for i := len(metaList) - 1; i >= 0; i-- {
			sxMeta = sxMeta.Cons(sx.Int64(metaList[i].Zid))
		}
		sxMeta = sxMeta.Cons(sx.String(aggKey))
		result = result.Cons(sxMeta)
	}
	_, err := sx.Print(w, sx.MakeList(
		sf.MustMake("aggregate"),
		sx.String(act),
		sx.MakeList(sf.MustMake("query"), sx.String(dze.sq.String())),
		sx.MakeList(sf.MustMake("human"), sx.String(dze.sq.Human())),
		result.Cons(sf.MustMake("list")),
	))
	return err
}

func (a *API) handleTagZettel(w http.ResponseWriter, r *http.Request, tagZettel *usecase.TagZettel, vals url.Values) bool {
	tag := vals.Get(api.QueryKeyTag)
	if tag == "" {
		return false
	}
	ctx := r.Context()
	z, err := tagZettel.Run(ctx, tag)
	if err != nil {
		a.reportUsecaseError(w, err)
		return true
	}
	zid := z.Meta.Zid.String()
	w.Header().Set(api.HeaderContentType, content.PlainText)
	newURL := a.NewURLBuilder('z').SetZid(api.ZettelID(zid))
	for key, slVals := range vals {
		if key == api.QueryKeyTag {
			continue
		}
		for _, val := range slVals {
			newURL.AppendKVQuery(key, val)
		}
	}
	http.Redirect(w, r, newURL.String(), http.StatusFound)
	if _, err = io.WriteString(w, zid); err != nil {
		a.log.Error().Err(err).Msg("redirect body")
	}
	return true
}

func (a *API) handleRoleZettel(w http.ResponseWriter, r *http.Request, roleZettel *usecase.RoleZettel, vals url.Values) bool {
	role := vals.Get(api.QueryKeyRole)
	if role == "" {
		return false
	}
	ctx := r.Context()
	z, err := roleZettel.Run(ctx, role)
	if err != nil {
		a.reportUsecaseError(w, err)
		return true
	}
	zid := z.Meta.Zid.String()
	w.Header().Set(api.HeaderContentType, content.PlainText)
	newURL := a.NewURLBuilder('z').SetZid(api.ZettelID(zid))
	for key, slVals := range vals {
		if key == api.QueryKeyRole {
			continue
		}
		for _, val := range slVals {
			newURL.AppendKVQuery(key, val)
		}
	}






	http.Redirect(w, r, newURL.String(), http.StatusFound)
	if _, err = io.WriteString(w, zid); err != nil {
		a.log.Error().Err(err).Msg("redirect body")
	}
	return true
}

Changes to web/adapter/api/rename_zettel.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package api

import (
	"net/http"
	"net/url"








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package api

import (
	"net/http"
	"net/url"

Changes to web/adapter/api/request.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package api

import (
	"io"
	"net/http"
	"net/url"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/input"
	"zettelstore.de/client.fossil/sexp"
	"zettelstore.de/sx.fossil/sxreader"
	"zettelstore.de/z/zettel"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

// getEncoding returns the data encoding selected by the caller.
func getEncoding(r *http.Request, q url.Values) (api.EncodingEnum, string) {








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package api

import (
	"io"
	"net/http"
	"net/url"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/sexp"
	"zettelstore.de/sx.fossil/sxreader"
	"zettelstore.de/z/input"
	"zettelstore.de/z/zettel"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

// getEncoding returns the data encoding selected by the caller.
func getEncoding(r *http.Request, q url.Values) (api.EncodingEnum, string) {

Changes to web/adapter/api/response.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package api

import (
	"bytes"
	"net/http"

	"zettelstore.de/sx.fossil"
	"zettelstore.de/z/web/content"
	"zettelstore.de/z/zettel/id"
)

func (a *API) writeObject(w http.ResponseWriter, zid id.Zid, obj sx.Object) error {
	var buf bytes.Buffer
	if _, err := sx.Print(&buf, obj); err != nil {
		msg := a.log.Error().Err(err)
		if msg != nil {
			if zid.IsValid() {
				msg = msg.Zid(zid)
			}
			msg.Msg("Unable to store object in buffer")
		}
		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
		return nil
	}
	return writeBuffer(w, &buf, content.SXPF)
}








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package api

import (
	"bytes"
	"net/http"

	"zettelstore.de/sx.fossil"
	"zettelstore.de/z/web/content"
	"zettelstore.de/z/zettel/id"
)

func (a *API) writeObject(w http.ResponseWriter, zid id.Zid, obj sx.Object) error {
	var buf bytes.Buffer
	if _, err := sx.Print(&buf, obj); err != nil {
		msg := a.log.Fatal().Err(err)
		if msg != nil {
			if zid.IsValid() {
				msg = msg.Zid(zid)
			}
			msg.Msg("Unable to store object in buffer")
		}
		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
		return nil
	}
	return writeBuffer(w, &buf, content.SXPF)
}

Changes to web/adapter/api/update_zettel.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package api

import (
	"net/http"









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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package api

import (
	"net/http"

Changes to web/adapter/errors.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------


package adapter

import "net/http"

// BadRequest signals HTTP status code 400.
func BadRequest(w http.ResponseWriter, text string) {
	http.Error(w, text, http.StatusBadRequest)
}











// ErrResourceNotFound is signalled when a web resource was not found.
type ErrResourceNotFound struct{ Path string }

func (ernf ErrResourceNotFound) Error() string { return "resource not found: " + ernf.Path }








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>








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package adapter provides handlers for web requests.
package adapter

import "net/http"

// BadRequest signals HTTP status code 400.
func BadRequest(w http.ResponseWriter, text string) {
	http.Error(w, text, http.StatusBadRequest)
}

// Forbidden signals HTTP status code 403.
func Forbidden(w http.ResponseWriter, text string) {
	http.Error(w, text, http.StatusForbidden)
}

// NotFound signals HTTP status code 404.
func NotFound(w http.ResponseWriter, text string) {
	http.Error(w, text, http.StatusNotFound)
}

// ErrResourceNotFound is signalled when a web resource was not found.
type ErrResourceNotFound struct{ Path string }

func (ernf ErrResourceNotFound) Error() string { return "resource not found: " + ernf.Path }

Changes to web/adapter/request.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package adapter

import (
	"net/http"
	"net/url"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package adapter

import (
	"net/http"
	"net/url"

Changes to web/adapter/response.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package adapter

import (
	"errors"
	"fmt"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package adapter

import (
	"errors"
	"fmt"

Changes to web/adapter/webui/const.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

package webui

// WebUI related constants.

const queryKeyAction = "_action"








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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package webui

// WebUI related constants.

const queryKeyAction = "_action"

Changes to web/adapter/webui/create_zettel.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package webui

import (
	"bytes"
	"context"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package webui

import (
	"bytes"
	"context"
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		newZid, err := createZettel.Run(ctx, zettel)
		if err != nil {
			wui.reportError(ctx, w, err)
			return
		}
		if reEdit {
			wui.redirectFound(w, r, wui.NewURLBuilder('e').SetZid(newZid.ZettelID()))
		} else {
			wui.redirectFound(w, r, wui.NewURLBuilder('h').SetZid(newZid.ZettelID()))
		}
	}
}

// MakeGetZettelFromListHandler creates a new HTTP handler to store content of
// an existing zettel.
func (wui *WebUI) MakeGetZettelFromListHandler(
	queryMeta *usecase.Query, evaluate *usecase.Evaluate,
	ucListRoles usecase.ListRoles, ucListSyntax usecase.ListSyntax) http.HandlerFunc {

	return func(w http.ResponseWriter, r *http.Request) {
		q := adapter.GetQuery(r.URL.Query())
		ctx := r.Context()
		metaSeq, err := queryMeta.Run(box.NoEnrichQuery(ctx, q), q)
		if err != nil {
			wui.reportError(ctx, w, err)
			return
		}
		entries, _ := evaluator.QueryAction(ctx, q, metaSeq, wui.rtConfig)
		bns := evaluate.RunBlockNode(ctx, entries)
		enc := zmkenc.Create()
		var zmkContent bytes.Buffer
		_, err = enc.WriteBlocks(&zmkContent, &bns)
		if err != nil {
			wui.reportError(ctx, w, err)
			return
		}







|

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		newZid, err := createZettel.Run(ctx, zettel)
		if err != nil {
			wui.reportError(ctx, w, err)
			return
		}
		if reEdit {
			wui.redirectFound(w, r, wui.NewURLBuilder('e').SetZid(api.ZettelID(newZid.String())))
		} else {
			wui.redirectFound(w, r, wui.NewURLBuilder('h').SetZid(api.ZettelID(newZid.String())))
		}
	}
}

// MakeGetZettelFromListHandler creates a new HTTP handler to store content of
// an existing zettel.
func (wui *WebUI) MakeGetZettelFromListHandler(
	queryMeta *usecase.Query, evaluate *usecase.Evaluate,
	ucListRoles usecase.ListRoles, ucListSyntax usecase.ListSyntax) http.HandlerFunc {

	return func(w http.ResponseWriter, r *http.Request) {
		q := adapter.GetQuery(r.URL.Query())
		ctx := r.Context()
		metaSeq, err := queryMeta.Run(box.NoEnrichQuery(ctx, q), q)
		if err != nil {
			wui.reportError(ctx, w, err)
			return
		}

		bns := evaluate.RunBlockNode(ctx, evaluator.QueryAction(ctx, q, metaSeq, wui.rtConfig))
		enc := zmkenc.Create()
		var zmkContent bytes.Buffer
		_, err = enc.WriteBlocks(&zmkContent, &bns)
		if err != nil {
			wui.reportError(ctx, w, err)
			return
		}

Changes to web/adapter/webui/delete_zettel.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package webui

import (
	"net/http"









<
<
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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package webui

import (
	"net/http"

Changes to web/adapter/webui/edit_zettel.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package webui

import (
	"net/http"


	"zettelstore.de/z/box"
	"zettelstore.de/z/usecase"
	"zettelstore.de/z/web/adapter"
	"zettelstore.de/z/zettel/id"
)

// MakeEditGetZettelHandler creates a new HTTP handler to display the








<
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>







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package webui

import (
	"net/http"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/z/box"
	"zettelstore.de/z/usecase"
	"zettelstore.de/z/web/adapter"
	"zettelstore.de/z/zettel/id"
)

// MakeEditGetZettelHandler creates a new HTTP handler to display the
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		}
		if err = updateZettel.Run(r.Context(), zettel, hasContent); err != nil {
			wui.reportError(ctx, w, err)
			return
		}

		if reEdit {
			wui.redirectFound(w, r, wui.NewURLBuilder('e').SetZid(zid.ZettelID()))
		} else {
			wui.redirectFound(w, r, wui.NewURLBuilder('h').SetZid(zid.ZettelID()))
		}
	}
}







|

|



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		}
		if err = updateZettel.Run(r.Context(), zettel, hasContent); err != nil {
			wui.reportError(ctx, w, err)
			return
		}

		if reEdit {
			wui.redirectFound(w, r, wui.NewURLBuilder('e').SetZid(api.ZettelID(zid.String())))
		} else {
			wui.redirectFound(w, r, wui.NewURLBuilder('h').SetZid(api.ZettelID(zid.String())))
		}
	}
}

Changes to web/adapter/webui/favicon.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

package webui

import (
	"io"
	"net/http"
	"os"
	"path/filepath"

	"zettelstore.de/z/web/adapter"
)

func (wui *WebUI) MakeFaviconHandler(baseDir string) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		filename := filepath.Join(baseDir, "favicon.ico")
		f, err := os.Open(filename)
		if err != nil {
			wui.log.Debug().Err(err).Msg("Favicon not found")
			http.Error(w, http.StatusText(http.StatusNotFound), http.StatusNotFound)
			return
		}
		defer f.Close()

		data, err := io.ReadAll(f)
		if err != nil {
			wui.log.Error().Err(err).Msg("Unable to read favicon data")
			http.Error(w, http.StatusText(http.StatusNotFound), http.StatusNotFound)
			return
		}

		if err = adapter.WriteData(w, data, ""); err != nil {
			wui.log.Error().Err(err).Msg("Write favicon")
		}
	}
}








<
<
<


















|







|









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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package webui

import (
	"io"
	"net/http"
	"os"
	"path/filepath"

	"zettelstore.de/z/web/adapter"
)

func (wui *WebUI) MakeFaviconHandler(baseDir string) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		filename := filepath.Join(baseDir, "favicon.ico")
		f, err := os.Open(filename)
		if err != nil {
			wui.log.Sense().Err(err).Msg("Favicon not found")
			http.Error(w, http.StatusText(http.StatusNotFound), http.StatusNotFound)
			return
		}
		defer f.Close()

		data, err := io.ReadAll(f)
		if err != nil {
			wui.log.Info().Err(err).Msg("Unable to read favicon data")
			http.Error(w, http.StatusText(http.StatusNotFound), http.StatusNotFound)
			return
		}

		if err = adapter.WriteData(w, data, ""); err != nil {
			wui.log.Error().Err(err).Msg("Write favicon")
		}
	}
}

Changes to web/adapter/webui/forms.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package webui

import (
	"bytes"
	"errors"
	"io"
	"net/http"
	"regexp"
	"strings"
	"unicode"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/input"
	"zettelstore.de/z/kernel"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/web/content"
	"zettelstore.de/z/zettel"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)








<
<
<














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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package webui

import (
	"bytes"
	"errors"
	"io"
	"net/http"
	"regexp"
	"strings"
	"unicode"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/z/input"
	"zettelstore.de/z/kernel"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/web/content"
	"zettelstore.de/z/zettel"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

Changes to web/adapter/webui/forms_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package webui

import "testing"

func TestRemoveEmptyLines(t *testing.T) {








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package webui

import "testing"

func TestRemoveEmptyLines(t *testing.T) {

Changes to web/adapter/webui/get_info.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package webui

import (
	"context"
	"net/http"








<
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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package webui

import (
	"context"
	"net/http"
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		}
		unlinkedMeta, err := ucQuery.Run(ctx, createUnlinkedQuery(zid, phrase))
		if err != nil {
			wui.reportError(ctx, w, err)
			return
		}

		entries, _ := evaluator.QueryAction(ctx, nil, unlinkedMeta, wui.rtConfig)
		bns := ucEvaluate.RunBlockNode(ctx, entries)
		unlinkedContent, _, err := enc.BlocksSxn(&bns)
		if err != nil {
			wui.reportError(ctx, w, err)
			return
		}
		encTexts := encodingTexts()
		shadowLinks := getShadowLinks(ctx, zid, ucGetAllMeta)







<
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		}
		unlinkedMeta, err := ucQuery.Run(ctx, createUnlinkedQuery(zid, phrase))
		if err != nil {
			wui.reportError(ctx, w, err)
			return
		}


		bns := ucEvaluate.RunBlockNode(ctx, evaluator.QueryAction(ctx, nil, unlinkedMeta, wui.rtConfig))
		unlinkedContent, _, err := enc.BlocksSxn(&bns)
		if err != nil {
			wui.reportError(ctx, w, err)
			return
		}
		encTexts := encodingTexts()
		shadowLinks := getShadowLinks(ctx, zid, ucGetAllMeta)
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	return encTexts
}

var apiParts = []string{api.PartZettel, api.PartMeta, api.PartContent}

func (wui *WebUI) infoAPIMatrix(zid id.Zid, parseOnly bool, encTexts []string) *sx.Pair {
	matrix := sx.Nil()
	u := wui.NewURLBuilder('z').SetZid(zid.ZettelID())
	for ip := len(apiParts) - 1; ip >= 0; ip-- {
		part := apiParts[ip]
		row := sx.Nil()
		for je := len(encTexts) - 1; je >= 0; je-- {
			enc := encTexts[je]
			if parseOnly {
				u.AppendKVQuery(api.QueryKeyParseOnly, "")
			}
			u.AppendKVQuery(api.QueryKeyPart, part)
			u.AppendKVQuery(api.QueryKeyEncoding, enc)
			row = row.Cons(sx.Cons(sx.String(enc), sx.String(u.String())))
			u.ClearQuery()
		}
		matrix = matrix.Cons(sx.Cons(sx.String(part), row))
	}
	return matrix
}

func (wui *WebUI) infoAPIMatrixParsed(zid id.Zid, encTexts []string) *sx.Pair {
	matrix := wui.infoAPIMatrix(zid, true, encTexts)
	u := wui.NewURLBuilder('z').SetZid(zid.ZettelID())

	for i, row := 0, matrix; i < len(apiParts) && row != nil; row = row.Tail() {
		line, isLine := sx.GetPair(row.Car())
		if !isLine || line == nil {
			continue
		}
		last := line.LastPair()







|




















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	return encTexts
}

var apiParts = []string{api.PartZettel, api.PartMeta, api.PartContent}

func (wui *WebUI) infoAPIMatrix(zid id.Zid, parseOnly bool, encTexts []string) *sx.Pair {
	matrix := sx.Nil()
	u := wui.NewURLBuilder('z').SetZid(api.ZettelID(zid.String()))
	for ip := len(apiParts) - 1; ip >= 0; ip-- {
		part := apiParts[ip]
		row := sx.Nil()
		for je := len(encTexts) - 1; je >= 0; je-- {
			enc := encTexts[je]
			if parseOnly {
				u.AppendKVQuery(api.QueryKeyParseOnly, "")
			}
			u.AppendKVQuery(api.QueryKeyPart, part)
			u.AppendKVQuery(api.QueryKeyEncoding, enc)
			row = row.Cons(sx.Cons(sx.String(enc), sx.String(u.String())))
			u.ClearQuery()
		}
		matrix = matrix.Cons(sx.Cons(sx.String(part), row))
	}
	return matrix
}

func (wui *WebUI) infoAPIMatrixParsed(zid id.Zid, encTexts []string) *sx.Pair {
	matrix := wui.infoAPIMatrix(zid, true, encTexts)
	u := wui.NewURLBuilder('z').SetZid(api.ZettelID(zid.String()))

	for i, row := 0, matrix; i < len(apiParts) && row != nil; row = row.Tail() {
		line, isLine := sx.GetPair(row.Car())
		if !isLine || line == nil {
			continue
		}
		last := line.LastPair()

Changes to web/adapter/webui/get_zettel.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package webui

import (
	"context"
	"net/http"
	"strings"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/shtml"
	"zettelstore.de/sx.fossil"
	"zettelstore.de/z/box"
	"zettelstore.de/z/config"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/usecase"
	"zettelstore.de/z/web/server"
	"zettelstore.de/z/zettel/id"








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<


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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package webui

import (
	"context"
	"net/http"


	"zettelstore.de/client.fossil/api"

	"zettelstore.de/sx.fossil"
	"zettelstore.de/z/box"
	"zettelstore.de/z/config"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/usecase"
	"zettelstore.de/z/web/server"
	"zettelstore.de/z/zettel/id"
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		}

		user := server.GetUser(ctx)
		getTextTitle := wui.makeGetTextTitle(ctx, getZettel)

		title := parser.NormalizedSpacedText(zn.InhMeta.GetTitle())
		env, rb := wui.createRenderEnv(ctx, "zettel", wui.rtConfig.Get(ctx, zn.InhMeta, api.KeyLang), title, user)
		rb.bindSymbol(symMetaHeader, metaObj)
		rb.bindString("heading", sx.String(title))
		if role, found := zn.InhMeta.Get(api.KeyRole); found && role != "" {
			rb.bindString("role-url", sx.String(wui.NewURLBuilder('h').AppendQuery(api.KeyRole+api.SearchOperatorHas+role).String()))
		}
		if folgeRole, found := zn.InhMeta.Get(api.KeyFolgeRole); found && folgeRole != "" {
			rb.bindString("folge-role-url", sx.String(wui.NewURLBuilder('h').AppendQuery(api.KeyRole+api.SearchOperatorHas+folgeRole).String()))
		}
		rb.bindString("tag-refs", wui.transformTagSet(api.KeyTags, meta.ListFromValue(zn.InhMeta.GetDefault(api.KeyTags, ""))))
		rb.bindString("predecessor-refs", wui.identifierSetAsLinks(zn.InhMeta, api.KeyPredecessor, getTextTitle))
		rb.bindString("precursor-refs", wui.identifierSetAsLinks(zn.InhMeta, api.KeyPrecursor, getTextTitle))
		rb.bindString("superior-refs", wui.identifierSetAsLinks(zn.InhMeta, api.KeySuperior, getTextTitle))
		rb.bindString("urls", metaURLAssoc(zn.InhMeta))
		rb.bindString("content", content)
		rb.bindString("endnotes", endnotes)
		wui.bindLinks(ctx, &rb, "folge", zn.InhMeta, api.KeyFolge, config.KeyShowFolgeLinks, getTextTitle)
		wui.bindLinks(ctx, &rb, "subordinate", zn.InhMeta, api.KeySubordinates, config.KeyShowSubordinateLinks, getTextTitle)
		wui.bindLinks(ctx, &rb, "back", zn.InhMeta, api.KeyBack, config.KeyShowBackLinks, getTextTitle)
		wui.bindLinks(ctx, &rb, "successor", zn.InhMeta, api.KeySuccessors, config.KeyShowSuccessorLinks, getTextTitle)
		if role, found := zn.InhMeta.Get(api.KeyRole); found && role != "" {







|











<







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		}

		user := server.GetUser(ctx)
		getTextTitle := wui.makeGetTextTitle(ctx, getZettel)

		title := parser.NormalizedSpacedText(zn.InhMeta.GetTitle())
		env, rb := wui.createRenderEnv(ctx, "zettel", wui.rtConfig.Get(ctx, zn.InhMeta, api.KeyLang), title, user)
		rb.bindSymbol(wui.symMetaHeader, metaObj)
		rb.bindString("heading", sx.String(title))
		if role, found := zn.InhMeta.Get(api.KeyRole); found && role != "" {
			rb.bindString("role-url", sx.String(wui.NewURLBuilder('h').AppendQuery(api.KeyRole+api.SearchOperatorHas+role).String()))
		}
		if folgeRole, found := zn.InhMeta.Get(api.KeyFolgeRole); found && folgeRole != "" {
			rb.bindString("folge-role-url", sx.String(wui.NewURLBuilder('h').AppendQuery(api.KeyRole+api.SearchOperatorHas+folgeRole).String()))
		}
		rb.bindString("tag-refs", wui.transformTagSet(api.KeyTags, meta.ListFromValue(zn.InhMeta.GetDefault(api.KeyTags, ""))))
		rb.bindString("predecessor-refs", wui.identifierSetAsLinks(zn.InhMeta, api.KeyPredecessor, getTextTitle))
		rb.bindString("precursor-refs", wui.identifierSetAsLinks(zn.InhMeta, api.KeyPrecursor, getTextTitle))
		rb.bindString("superior-refs", wui.identifierSetAsLinks(zn.InhMeta, api.KeySuperior, getTextTitle))

		rb.bindString("content", content)
		rb.bindString("endnotes", endnotes)
		wui.bindLinks(ctx, &rb, "folge", zn.InhMeta, api.KeyFolge, config.KeyShowFolgeLinks, getTextTitle)
		wui.bindLinks(ctx, &rb, "subordinate", zn.InhMeta, api.KeySubordinates, config.KeyShowSubordinateLinks, getTextTitle)
		wui.bindLinks(ctx, &rb, "back", zn.InhMeta, api.KeyBack, config.KeyShowBackLinks, getTextTitle)
		wui.bindLinks(ctx, &rb, "successor", zn.InhMeta, api.KeySuccessors, config.KeyShowSuccessorLinks, getTextTitle)
		if role, found := zn.InhMeta.Get(api.KeyRole); found && role != "" {
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func (wui *WebUI) identifierSetAsLinks(m *meta.Meta, key string, getTextTitle getTextTitleFunc) *sx.Pair {
	if values, ok := m.GetList(key); ok {
		return wui.transformIdentifierSet(values, getTextTitle)
	}
	return nil
}

func metaURLAssoc(m *meta.Meta) *sx.Pair {
	var result sx.ListBuilder
	for _, p := range m.PairsRest() {
		if key := p.Key; strings.HasSuffix(key, meta.SuffixKeyURL) {
			if val := p.Value; val != "" {
				result.Add(sx.Cons(sx.String(capitalizeMetaKey(key)), sx.String(val)))
			}
		}
	}
	return result.List()
}

func (wui *WebUI) bindLinks(ctx context.Context, rb *renderBinder, varPrefix string, m *meta.Meta, key, configKey string, getTextTitle getTextTitleFunc) {
	varLinks := varPrefix + "-links"
	var symOpen *sx.Symbol
	switch wui.rtConfig.Get(ctx, m, configKey) {
	case "false":
		rb.bindString(varLinks, sx.Nil())
		return
	case "close":
	default:
		symOpen = shtml.SymAttrOpen
	}
	lstLinks := wui.zettelLinksSxn(m, key, getTextTitle)
	rb.bindString(varLinks, lstLinks)
	if sx.IsNil(lstLinks) {
		return
	}
	rb.bindString(varPrefix+"-open", symOpen)







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<









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func (wui *WebUI) identifierSetAsLinks(m *meta.Meta, key string, getTextTitle getTextTitleFunc) *sx.Pair {
	if values, ok := m.GetList(key); ok {
		return wui.transformIdentifierSet(values, getTextTitle)
	}
	return nil
}













func (wui *WebUI) bindLinks(ctx context.Context, rb *renderBinder, varPrefix string, m *meta.Meta, key, configKey string, getTextTitle getTextTitleFunc) {
	varLinks := varPrefix + "-links"
	var symOpen *sx.Symbol
	switch wui.rtConfig.Get(ctx, m, configKey) {
	case "false":
		rb.bindString(varLinks, sx.Nil())
		return
	case "close":
	default:
		symOpen = wui.symAttrOpen
	}
	lstLinks := wui.zettelLinksSxn(m, key, getTextTitle)
	rb.bindString(varLinks, lstLinks)
	if sx.IsNil(lstLinks) {
		return
	}
	rb.bindString(varPrefix+"-open", symOpen)
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	for i := len(values) - 1; i >= 0; i-- {
		val := values[i]
		zid, err := id.Parse(val)
		if err != nil {
			continue
		}
		if title, found := getTextTitle(zid); found > 0 {
			url := sx.String(wui.NewURLBuilder('h').SetZid(zid.ZettelID()).String())
			if title == "" {
				lst = lst.Cons(sx.Cons(sx.String(val), url))
			} else {
				lst = lst.Cons(sx.Cons(sx.String(title), url))
			}
		}
	}
	return lst
}







|









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	for i := len(values) - 1; i >= 0; i-- {
		val := values[i]
		zid, err := id.Parse(val)
		if err != nil {
			continue
		}
		if title, found := getTextTitle(zid); found > 0 {
			url := sx.String(wui.NewURLBuilder('h').SetZid(api.ZettelID(zid.String())).String())
			if title == "" {
				lst = lst.Cons(sx.Cons(sx.String(val), url))
			} else {
				lst = lst.Cons(sx.Cons(sx.String(title), url))
			}
		}
	}
	return lst
}

Changes to web/adapter/webui/goaction.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package webui

import (
	"net/http"









<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package webui

import (
	"net/http"

Changes to web/adapter/webui/home.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package webui

import (
	"context"
	"errors"
	"net/http"


	"zettelstore.de/z/box"
	"zettelstore.de/z/config"
	"zettelstore.de/z/web/adapter"
	"zettelstore.de/z/web/server"
	"zettelstore.de/z/zettel"
	"zettelstore.de/z/zettel/id"
)








<
<
<









>







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package webui

import (
	"context"
	"errors"
	"net/http"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/z/box"
	"zettelstore.de/z/config"
	"zettelstore.de/z/web/adapter"
	"zettelstore.de/z/web/server"
	"zettelstore.de/z/zettel"
	"zettelstore.de/z/zettel/id"
)
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	return func(w http.ResponseWriter, r *http.Request) {
		ctx := r.Context()
		if p := r.URL.Path; p != "/" {
			wui.reportError(ctx, w, adapter.ErrResourceNotFound{Path: p})
			return
		}
		homeZid, _ := id.Parse(wui.rtConfig.Get(ctx, nil, config.KeyHomeZettel))
		apiHomeZid := homeZid.ZettelID()
		if homeZid != id.DefaultHomeZid {
			if _, err := s.GetZettel(ctx, homeZid); err == nil {
				wui.redirectFound(w, r, wui.NewURLBuilder('h').SetZid(apiHomeZid))
				return
			}
			homeZid = id.DefaultHomeZid
		}







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	return func(w http.ResponseWriter, r *http.Request) {
		ctx := r.Context()
		if p := r.URL.Path; p != "/" {
			wui.reportError(ctx, w, adapter.ErrResourceNotFound{Path: p})
			return
		}
		homeZid, _ := id.Parse(wui.rtConfig.Get(ctx, nil, config.KeyHomeZettel))
		apiHomeZid := api.ZettelID(homeZid.String())
		if homeZid != id.DefaultHomeZid {
			if _, err := s.GetZettel(ctx, homeZid); err == nil {
				wui.redirectFound(w, r, wui.NewURLBuilder('h').SetZid(apiHomeZid))
				return
			}
			homeZid = id.DefaultHomeZid
		}

Changes to web/adapter/webui/htmlgen.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

package webui

import (
	"net/url"
	"strings"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/attrs"
	"zettelstore.de/client.fossil/maps"
	"zettelstore.de/client.fossil/shtml"
	"zettelstore.de/client.fossil/sz"
	"zettelstore.de/sx.fossil"
	"zettelstore.de/sx.fossil/sxhtml"
	"zettelstore.de/z/ast"
	"zettelstore.de/z/encoder"
	"zettelstore.de/z/encoder/szenc"
	"zettelstore.de/z/strfun"
	"zettelstore.de/z/zettel/meta"
)









<
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<














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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package webui

import (
	"net/url"
	"strings"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/attrs"
	"zettelstore.de/client.fossil/maps"
	"zettelstore.de/client.fossil/shtml"
	"zettelstore.de/client.fossil/sz"
	"zettelstore.de/sx.fossil"

	"zettelstore.de/z/ast"
	"zettelstore.de/z/encoder"
	"zettelstore.de/z/encoder/szenc"
	"zettelstore.de/z/strfun"
	"zettelstore.de/z/zettel/meta"
)

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	tx    *szenc.Transformer
	th    *shtml.Evaluator
	lang  string
	symAt *sx.Symbol
}

func (wui *WebUI) createGenerator(builder urlBuilder, lang string) *htmlGenerator {
	th := shtml.NewEvaluator(1)









	findA := func(obj sx.Object) (attr, assoc, rest *sx.Pair) {
		pair, isPair := sx.GetPair(obj)
		if !isPair || !shtml.SymA.IsEqual(pair.Car()) {
			return nil, nil, nil
		}
		rest = pair.Tail()
		if rest == nil {
			return nil, nil, nil
		}
		objA := rest.Car()
		attr, isPair = sx.GetPair(objA)
		if !isPair || !sxhtml.SymAttr.IsEqual(attr.Car()) {
			return nil, nil, nil
		}
		return attr, attr.Tail(), rest.Tail()
	}
	linkZettel := func(obj sx.Object) sx.Object {
		attr, assoc, rest := findA(obj)
		if attr == nil {
			return obj
		}

		hrefP := assoc.Assoc(shtml.SymAttrHref)
























		if hrefP == nil {
			return obj
		}
		href, ok := sx.GetString(hrefP.Cdr())
		if !ok {
			return obj
		}
		zid, fragment, hasFragment := strings.Cut(string(href), "#")
		u := builder.NewURLBuilder('h').SetZid(api.ZettelID(zid))
		if hasFragment {
			u = u.SetFragment(fragment)
		}
		assoc = assoc.Cons(sx.Cons(shtml.SymAttrHref, sx.String(u.String())))
		return rest.Cons(assoc.Cons(sxhtml.SymAttr)).Cons(shtml.SymA)
	}

	rebind(th, sz.SymLinkZettel, linkZettel)
	rebind(th, sz.SymLinkFound, linkZettel)
	rebind(th, sz.SymLinkBased, func(obj sx.Object) sx.Object {
		attr, assoc, rest := findA(obj)
		if attr == nil {
			return obj
		}
		hrefP := assoc.Assoc(shtml.SymAttrHref)
		if hrefP == nil {
			return obj
		}
		href, ok := sx.GetString(hrefP.Cdr())
		if !ok {
			return obj
		}
		u := builder.NewURLBuilder('/').SetRawLocal(string(href))
		assoc = assoc.Cons(sx.Cons(shtml.SymAttrHref, sx.String(u.String())))
		return rest.Cons(assoc.Cons(sxhtml.SymAttr)).Cons(shtml.SymA)
	})
	rebind(th, sz.SymLinkQuery, func(obj sx.Object) sx.Object {
		attr, assoc, rest := findA(obj)
		if attr == nil {
			return obj
		}
		hrefP := assoc.Assoc(shtml.SymAttrHref)
		if hrefP == nil {
			return obj
		}
		href, ok := sx.GetString(hrefP.Cdr())
		if !ok {
			return obj
		}
		ur, err := url.Parse(string(href))
		if err != nil {
			return obj
		}
		q := ur.Query().Get(api.QueryKeyQuery)
		if q == "" {
			return obj
		}
		u := builder.NewURLBuilder('h').AppendQuery(q)
		assoc = assoc.Cons(sx.Cons(shtml.SymAttrHref, sx.String(u.String())))
		return rest.Cons(assoc.Cons(sxhtml.SymAttr)).Cons(shtml.SymA)
	})
	rebind(th, sz.SymLinkExternal, func(obj sx.Object) sx.Object {
		attr, assoc, rest := findA(obj)
		if attr == nil {
			return obj
		}
		assoc = assoc.Cons(sx.Cons(shtml.SymAttrClass, sx.String("external"))).
			Cons(sx.Cons(shtml.SymAttrTarget, sx.String("_blank"))).
			Cons(sx.Cons(shtml.SymAttrRel, sx.String("noopener noreferrer")))
		return rest.Cons(assoc.Cons(sxhtml.SymAttr)).Cons(shtml.SymA)
	})
	rebind(th, sz.SymEmbed, func(obj sx.Object) sx.Object {
		pair, isPair := sx.GetPair(obj)
		if !isPair || !shtml.SymIMG.IsEqual(pair.Car()) {
			return obj
		}
		attr, isPair := sx.GetPair(pair.Tail().Car())
		if !isPair || !sxhtml.SymAttr.IsEqual(attr.Car()) {
			return obj
		}

		srcP := attr.Tail().Assoc(shtml.SymAttrSrc)
		if srcP == nil {
			return obj
		}
		src, isString := sx.GetString(srcP.Cdr())
		if !isString {
			return obj
		}
		zid := api.ZettelID(src)
		if !zid.IsValid() {
			return obj
		}
		u := builder.NewURLBuilder('z').SetZid(zid)
		imgAttr := attr.Tail().Cons(sx.Cons(shtml.SymAttrSrc, sx.String(u.String()))).Cons(sxhtml.SymAttr)
		return pair.Tail().Tail().Cons(imgAttr).Cons(shtml.SymIMG)
	})

	return &htmlGenerator{
		tx:   szenc.NewTransformer(),
		th:   th,
		lang: lang,

	}
}

func rebind(ev *shtml.Evaluator, sym *sx.Symbol, fn func(sx.Object) sx.Object) {
	prevFn := ev.ResolveBinding(sym)
	ev.Rebind(sym, func(args sx.Vector, env *shtml.Environment) sx.Object {
		obj := prevFn(args, env)
		if env.GetError() == nil {
			return fn(obj)
		}
		return sx.Nil()
	})
}







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	tx    *szenc.Transformer
	th    *shtml.Evaluator
	lang  string
	symAt *sx.Symbol
}

func (wui *WebUI) createGenerator(builder urlBuilder, lang string) *htmlGenerator {
	th := shtml.NewEvaluator(1, wui.sf)
	symA := wui.symA
	symImg := th.Make("img")
	symAttr := wui.symAttr

	symHref := wui.symHref
	symClass := th.Make("class")
	symTarget := th.Make("target")
	symRel := th.Make("rel")

	findA := func(obj sx.Object) (attr, assoc, rest *sx.Pair) {
		pair, isPair := sx.GetPair(obj)
		if !isPair || !symA.IsEqual(pair.Car()) {
			return nil, nil, nil
		}
		rest = pair.Tail()
		if rest == nil {
			return nil, nil, nil
		}
		objA := rest.Car()
		attr, isPair = sx.GetPair(objA)
		if !isPair || !symAttr.IsEqual(attr.Car()) {
			return nil, nil, nil
		}
		return attr, attr.Tail(), rest.Tail()
	}
	linkZettel := func(obj sx.Object) sx.Object {
		attr, assoc, rest := findA(obj)
		if attr == nil {
			return obj
		}

		hrefP := assoc.Assoc(symHref)
		if hrefP == nil {
			return obj
		}
		href, ok := sx.GetString(hrefP.Cdr())
		if !ok {
			return obj
		}
		zid, fragment, hasFragment := strings.Cut(href.String(), "#")
		u := builder.NewURLBuilder('h').SetZid(api.ZettelID(zid))
		if hasFragment {
			u = u.SetFragment(fragment)
		}
		assoc = assoc.Cons(sx.Cons(symHref, sx.String(u.String())))
		return rest.Cons(assoc.Cons(symAttr)).Cons(symA)
	}

	rebind(th, sz.NameSymLinkZettel, linkZettel)
	rebind(th, sz.NameSymLinkFound, linkZettel)
	rebind(th, sz.NameSymLinkBased, func(obj sx.Object) sx.Object {
		attr, assoc, rest := findA(obj)
		if attr == nil {
			return obj
		}
		hrefP := assoc.Assoc(symHref)
		if hrefP == nil {
			return obj
		}
		href, ok := sx.GetString(hrefP.Cdr())
		if !ok {
			return obj
		}

		u := builder.NewURLBuilder('/').SetRawLocal(href.String())



		assoc = assoc.Cons(sx.Cons(symHref, sx.String(u.String())))
		return rest.Cons(assoc.Cons(symAttr)).Cons(symA)
	})



	rebind(th, sz.NameSymLinkQuery, func(obj sx.Object) sx.Object {
		attr, assoc, rest := findA(obj)
		if attr == nil {
			return obj
		}
		hrefP := assoc.Assoc(symHref)
		if hrefP == nil {
			return obj
		}
		href, ok := sx.GetString(hrefP.Cdr())
		if !ok {
			return obj
		}

















		ur, err := url.Parse(href.String())
		if err != nil {
			return obj
		}
		q := ur.Query().Get(api.QueryKeyQuery)
		if q == "" {
			return obj
		}
		u := builder.NewURLBuilder('h').AppendQuery(q)
		assoc = assoc.Cons(sx.Cons(symHref, sx.String(u.String())))
		return rest.Cons(assoc.Cons(symAttr)).Cons(symA)
	})
	rebind(th, sz.NameSymLinkExternal, func(obj sx.Object) sx.Object {
		attr, assoc, rest := findA(obj)
		if attr == nil {
			return obj
		}
		assoc = assoc.Cons(sx.Cons(symClass, sx.String("external"))).
			Cons(sx.Cons(symTarget, sx.String("_blank"))).
			Cons(sx.Cons(symRel, sx.String("noopener noreferrer")))
		return rest.Cons(assoc.Cons(symAttr)).Cons(symA)
	})
	rebind(th, sz.NameSymEmbed, func(obj sx.Object) sx.Object {
		pair, isPair := sx.GetPair(obj)
		if !isPair || !symImg.IsEqual(pair.Car()) {
			return obj
		}
		attr, isPair := sx.GetPair(pair.Tail().Car())
		if !isPair || !symAttr.IsEqual(attr.Car()) {
			return obj
		}
		symSrc := th.Make("src")
		srcP := attr.Tail().Assoc(symSrc)
		if srcP == nil {
			return obj
		}
		src, isString := sx.GetString(srcP.Cdr())
		if !isString {
			return obj
		}
		zid := api.ZettelID(src)
		if !zid.IsValid() {
			return obj
		}
		u := builder.NewURLBuilder('z').SetZid(zid)
		imgAttr := attr.Tail().Cons(sx.Cons(symSrc, sx.String(u.String()))).Cons(symAttr)
		return pair.Tail().Tail().Cons(imgAttr).Cons(symImg)
	})

	return &htmlGenerator{
		tx:    szenc.NewTransformer(),
		th:    th,
		lang:  lang,
		symAt: symAttr,
	}
}

func rebind(ev *shtml.Evaluator, name string, fn func(sx.Object) sx.Object) {
	prevFn := ev.ResolveBinding(name)
	ev.Rebind(name, func(args []sx.Object, env *shtml.Environment) sx.Object {
		obj := prevFn(args, env)
		if env.GetError() == nil {
			return fn(obj)
		}
		return sx.Nil()
	})
}
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		for aelem := att.Tail(); aelem != nil; aelem = aelem.Tail() {
			if p, ok := sx.GetPair(aelem.Car()); ok {
				key := p.Car()
				val := p.Cdr()
				if tail, isTail := sx.GetPair(val); isTail {
					val = tail.Car()
				}
				a = a.Set(sz.GoValue(key), sz.GoValue(val))
			}
		}
		name, found := a.Get("name")
		if !found || ignore.Has(name) {
			continue
		}








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		for aelem := att.Tail(); aelem != nil; aelem = aelem.Tail() {
			if p, ok := sx.GetPair(aelem.Car()); ok {
				key := p.Car()
				val := p.Cdr()
				if tail, isTail := sx.GetPair(val); isTail {
					val = tail.Car()
				}
				a = a.Set(key.String(), val.String())
			}
		}
		name, found := a.Get("name")
		if !found || ignore.Has(name) {
			continue
		}

Changes to web/adapter/webui/htmlmeta.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package webui

import (
	"context"
	"errors"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/shtml"
	"zettelstore.de/sx.fossil"
	"zettelstore.de/sx.fossil/sxhtml"
	"zettelstore.de/z/ast"
	"zettelstore.de/z/box"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/usecase"
	"zettelstore.de/z/zettel/id"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package webui

import (
	"context"
	"errors"

	"zettelstore.de/client.fossil/api"

	"zettelstore.de/sx.fossil"
	"zettelstore.de/sx.fossil/sxhtml"
	"zettelstore.de/z/ast"
	"zettelstore.de/z/box"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/usecase"
	"zettelstore.de/z/zettel/id"
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	case meta.TypeEmpty:
		return sx.String(value)
	case meta.TypeID:
		return wui.transformIdentifier(value, getTextTitle)
	case meta.TypeIDSet:
		return wui.transformIdentifierSet(meta.ListFromValue(value), getTextTitle)
	case meta.TypeNumber:
		return wui.transformKeyValueText(key, value, value)
	case meta.TypeString:
		return sx.String(value)
	case meta.TypeTagSet:
		return wui.transformTagSet(key, meta.ListFromValue(value))
	case meta.TypeTimestamp:
		if ts, ok := meta.TimeValue(value); ok {
			return sx.MakeList(
				sx.MakeSymbol("time"),
				sx.MakeList(
					sxhtml.SymAttr,
					sx.Cons(sx.MakeSymbol("datetime"), sx.String(ts.Format("2006-01-02T15:04:05"))),
				),
				sx.MakeList(sxhtml.SymNoEscape, sx.String(ts.Format("2006-01-02&nbsp;15:04:05"))),
			)
		}
		return sx.Nil()
	case meta.TypeURL:
		return wui.url2html(sx.String(value))
	case meta.TypeWord:
		return wui.transformKeyValueText(key, value, value)


	case meta.TypeZettelmarkup:
		return wui.transformZmkMetadata(value, evalMetadata, gen)
	default:
		return sx.MakeList(shtml.SymSTRONG, sx.String("Unhandled type: "), sx.String(kt.Name))
	}
}

func (wui *WebUI) transformIdentifier(val string, getTextTitle getTextTitleFunc) sx.Object {
	text := sx.String(val)
	zid, err := id.Parse(val)
	if err != nil {
		return text
	}
	title, found := getTextTitle(zid)
	switch {
	case found > 0:
		ub := wui.NewURLBuilder('h').SetZid(zid.ZettelID())
		attrs := sx.Nil()
		if title != "" {
			attrs = attrs.Cons(sx.Cons(shtml.SymAttrTitle, sx.String(title)))
		}
		attrs = attrs.Cons(sx.Cons(shtml.SymAttrHref, sx.String(ub.String()))).Cons(sxhtml.SymAttr)
		return sx.Nil().Cons(sx.String(zid.String())).Cons(attrs).Cons(shtml.SymA)
	case found == 0:
		return sx.MakeList(sx.MakeSymbol("s"), text)
	default: // case found < 0:
		return text
	}
}

func (wui *WebUI) transformIdentifierSet(vals []string, getTextTitle getTextTitleFunc) *sx.Pair {
	if len(vals) == 0 {
		return nil
	}
	const space = sx.String(" ")
	text := make(sx.Vector, 0, 2*len(vals))
	for _, val := range vals {
		text = append(text, space, wui.transformIdentifier(val, getTextTitle))
	}
	return sx.MakeList(text[1:]...).Cons(shtml.SymSPAN)
}

func (wui *WebUI) transformTagSet(key string, tags []string) *sx.Pair {
	if len(tags) == 0 {
		return nil
	}
	const space = sx.String(" ")
	text := make(sx.Vector, 0, 2*len(tags)+2)
	for _, tag := range tags {
		text = append(text, space, wui.transformKeyValueText(key, tag, tag))
	}
	if len(tags) > 1 {
		text = append(text, space, wui.transformKeyValuesText(key, tags, "(all)"))
	}
	return sx.MakeList(text[1:]...).Cons(shtml.SymSPAN)
}

func (wui *WebUI) transformKeyValueText(key, value, text string) *sx.Pair {
	ub := wui.NewURLBuilder('h').AppendQuery(key + api.SearchOperatorHas + value)

	return buildHref(ub, text)
}

func (wui *WebUI) transformKeyValuesText(key string, values []string, text string) *sx.Pair {
	ub := wui.NewURLBuilder('h')
	for _, val := range values {
		ub = ub.AppendQuery(key + api.SearchOperatorHas + val)

	}
	return buildHref(ub, text)
}

func buildHref(ub *api.URLBuilder, text string) *sx.Pair {
	return sx.MakeList(
		shtml.SymA,
		sx.MakeList(
			sxhtml.SymAttr,
			sx.Cons(shtml.SymAttrHref, sx.String(ub.String())),
		),
		sx.String(text),
	)
}

type evalMetadataFunc = func(string) ast.InlineSlice








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	case meta.TypeEmpty:
		return sx.String(value)
	case meta.TypeID:
		return wui.transformIdentifier(value, getTextTitle)
	case meta.TypeIDSet:
		return wui.transformIdentifierSet(meta.ListFromValue(value), getTextTitle)
	case meta.TypeNumber:
		return wui.transformLink(key, value, value)
	case meta.TypeString:
		return sx.String(value)
	case meta.TypeTagSet:
		return wui.transformTagSet(key, meta.ListFromValue(value))
	case meta.TypeTimestamp:
		if ts, ok := meta.TimeValue(value); ok {
			return sx.MakeList(
				wui.sf.MustMake("time"),
				sx.MakeList(
					wui.symAttr,
					sx.Cons(wui.sf.MustMake("datetime"), sx.String(ts.Format("2006-01-02T15:04:05"))),
				),
				sx.MakeList(wui.sf.MustMake(sxhtml.NameSymNoEscape), sx.String(ts.Format("2006-01-02&nbsp;15:04:05"))),
			)
		}
		return sx.Nil()
	case meta.TypeURL:
		return wui.url2html(sx.String(value))
	case meta.TypeWord:
		return wui.transformLink(key, value, value)
	case meta.TypeWordSet:
		return wui.transformWordSet(key, meta.ListFromValue(value))
	case meta.TypeZettelmarkup:
		return wui.transformZmkMetadata(value, evalMetadata, gen)
	default:
		return sx.MakeList(wui.sf.MustMake("b"), sx.String("Unhandled type: "), sx.String(kt.Name))
	}
}

func (wui *WebUI) transformIdentifier(val string, getTextTitle getTextTitleFunc) sx.Object {
	text := sx.String(val)
	zid, err := id.Parse(val)
	if err != nil {
		return text
	}
	title, found := getTextTitle(zid)
	switch {
	case found > 0:
		ub := wui.NewURLBuilder('h').SetZid(api.ZettelID(zid.String()))
		attrs := sx.Nil()
		if title != "" {
			attrs = attrs.Cons(sx.Cons(wui.sf.MustMake("title"), sx.String(title)))
		}
		attrs = attrs.Cons(sx.Cons(wui.symHref, sx.String(ub.String()))).Cons(wui.symAttr)
		return sx.Nil().Cons(sx.String(zid.String())).Cons(attrs).Cons(wui.symA)
	case found == 0:
		return sx.MakeList(wui.sf.MustMake("s"), text)
	default: // case found < 0:
		return text
	}
}

func (wui *WebUI) transformIdentifierSet(vals []string, getTextTitle getTextTitleFunc) *sx.Pair {
	if len(vals) == 0 {
		return nil
	}
	space := sx.String(" ")
	text := make([]sx.Object, 0, 2*len(vals))
	for _, val := range vals {
		text = append(text, space, wui.transformIdentifier(val, getTextTitle))
	}
	return sx.MakeList(text[1:]...).Cons(wui.symSpan)
}

func (wui *WebUI) transformTagSet(key string, tags []string) *sx.Pair {
	if len(tags) == 0 {
		return nil
	}
	space := sx.String(" ")
	text := make([]sx.Object, 0, 2*len(tags))
	for _, tag := range tags {
		text = append(text, space, wui.transformLink(key, tag, tag))
	}



	return sx.MakeList(text[1:]...).Cons(wui.symSpan)
}

func (wui *WebUI) transformWordSet(key string, words []string) sx.Object {

	if len(words) == 0 {
		return sx.Nil()
	}
	space := sx.String(" ")

	text := make([]sx.Object, 0, 2*len(words))
	for _, word := range words {

		text = append(text, space, wui.transformLink(key, word, word))
	}
	return sx.MakeList(text[1:]...).Cons(wui.symSpan)
}

func (wui *WebUI) transformLink(key, value, text string) *sx.Pair {
	return sx.MakeList(
		wui.symA,
		sx.MakeList(
			wui.symAttr,
			sx.Cons(wui.symHref, sx.String(wui.NewURLBuilder('h').AppendQuery(key+api.SearchOperatorHas+value).String())),
		),
		sx.String(text),
	)
}

type evalMetadataFunc = func(string) ast.InlineSlice

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		}
		return parser.NormalizedSpacedText(z.Meta.GetTitle()), 1
	}
}

func (wui *WebUI) transformZmkMetadata(value string, evalMetadata evalMetadataFunc, gen *htmlGenerator) sx.Object {
	is := evalMetadata(value)
	return gen.InlinesSxHTML(&is).Cons(shtml.SymSPAN)
}







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		}
		return parser.NormalizedSpacedText(z.Meta.GetTitle()), 1
	}
}

func (wui *WebUI) transformZmkMetadata(value string, evalMetadata evalMetadataFunc, gen *htmlGenerator) sx.Object {
	is := evalMetadata(value)
	return gen.InlinesSxHTML(&is).Cons(wui.symSpan)
}

Changes to web/adapter/webui/lists.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package webui

import (
	"context"
	"io"
	"net/http"
	"net/url"
	"slices"
	"strconv"
	"strings"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/shtml"
	"zettelstore.de/sx.fossil"
	"zettelstore.de/sx.fossil/sxhtml"
	"zettelstore.de/z/ast"
	"zettelstore.de/z/encoding/atom"
	"zettelstore.de/z/encoding/rss"
	"zettelstore.de/z/encoding/xml"
	"zettelstore.de/z/evaluator"
	"zettelstore.de/z/query"
	"zettelstore.de/z/usecase"
	"zettelstore.de/z/web/adapter"
	"zettelstore.de/z/web/server"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

// MakeListHTMLMetaHandler creates a HTTP handler for rendering the list of zettel as HTML.
func (wui *WebUI) MakeListHTMLMetaHandler(queryMeta *usecase.Query, tagZettel *usecase.TagZettel, roleZettel *usecase.RoleZettel, reIndex *usecase.ReIndex) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		urlQuery := r.URL.Query()
		if wui.handleTagZettel(w, r, tagZettel, urlQuery) ||


			wui.handleRoleZettel(w, r, roleZettel, urlQuery) {
			return
		}
		q := adapter.GetQuery(urlQuery)
		q = q.SetDeterministic()
		ctx := r.Context()
		metaSeq, err := queryMeta.Run(ctx, q)
		if err != nil {
			wui.reportError(ctx, w, err)
			return
		}
		actions, err := adapter.TryReIndex(ctx, q.Actions(), metaSeq, reIndex)




		if err != nil {
			wui.reportError(ctx, w, err)
			return
		}
		if len(actions) > 0 {
			if len(metaSeq) > 0 {
				for _, act := range actions {
					if act == api.RedirectAction {
						ub := wui.NewURLBuilder('h').SetZid(metaSeq[0].Zid.ZettelID())
						wui.redirectFound(w, r, ub)
						return
					}

				}

			}


			switch actions[0] {
			case api.AtomAction:
				wui.renderAtom(w, q, metaSeq)
				return
			case api.RSSAction:
				wui.renderRSS(ctx, w, q, metaSeq)
				return
			}
		}

		var content, endnotes *sx.Pair
		numEntries := 0
		if bn, cnt := evaluator.QueryAction(ctx, q, metaSeq, wui.rtConfig); bn != nil {
			enc := wui.getSimpleHTMLEncoder(wui.rtConfig.Get(ctx, nil, api.KeyLang))
			content, endnotes, err = enc.BlocksSxn(&ast.BlockSlice{bn})
			if err != nil {
				wui.reportError(ctx, w, err)
				return
			}
			numEntries = cnt
		}

		user := server.GetUser(ctx)
		env, rb := wui.createRenderEnv(
			ctx, "list",
			wui.rtConfig.Get(ctx, nil, api.KeyLang),
			wui.rtConfig.GetSiteName(), user)
		if q == nil {
			rb.bindString("heading", sx.String(wui.rtConfig.GetSiteName()))
		} else {
			var sb strings.Builder
			q.PrintHuman(&sb)
			rb.bindString("heading", sx.String(sb.String()))
		}
		rb.bindString("query-value", sx.String(q.String()))
		if tzl := q.GetMetaValues(api.KeyTags, false); len(tzl) > 0 {
			sxTzl, sxNoTzl := wui.transformTagZettelList(ctx, tagZettel, tzl)
			if !sx.IsNil(sxTzl) {
				rb.bindString("tag-zettel", sxTzl)
			}
			if !sx.IsNil(sxNoTzl) && wui.canCreate(ctx, user) {
				rb.bindString("create-tag-zettel", sxNoTzl)
			}
		}
		if rzl := q.GetMetaValues(api.KeyRole, false); len(rzl) > 0 {
			sxRzl, sxNoRzl := wui.transformRoleZettelList(ctx, roleZettel, rzl)
			if !sx.IsNil(sxRzl) {
				rb.bindString("role-zettel", sxRzl)
			}
			if !sx.IsNil(sxNoRzl) && wui.canCreate(ctx, user) {
				rb.bindString("create-role-zettel", sxNoRzl)
			}
		}
		rb.bindString("content", content)
		rb.bindString("endnotes", endnotes)
		rb.bindString("num-entries", sx.Int64(numEntries))
		rb.bindString("num-meta", sx.Int64(len(metaSeq)))
		apiURL := wui.NewURLBuilder('z').AppendQuery(q.String())
		seed, found := q.GetSeed()
		if found {
			apiURL = apiURL.AppendKVQuery(api.QueryKeySeed, strconv.Itoa(seed))
		} else {
			seed = 0
		}
		if len(metaSeq) > 0 {
			rb.bindString("plain-url", sx.String(apiURL.String()))
			rb.bindString("data-url", sx.String(apiURL.AppendKVQuery(api.QueryKeyEncoding, api.EncodingData).String()))
			if wui.canCreate(ctx, user) {
				rb.bindString("create-url", sx.String(wui.createNewURL))
				rb.bindString("seed", sx.Int64(seed))
			}
		}
		if rb.err == nil {
			err = wui.renderSxnTemplate(ctx, w, id.ListTemplateZid, env)
		} else {
			err = rb.err
		}
		if err != nil {








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package webui

import (
	"context"
	"io"
	"net/http"
	"net/url"
	"slices"
	"strconv"
	"strings"

	"zettelstore.de/client.fossil/api"

	"zettelstore.de/sx.fossil"

	"zettelstore.de/z/ast"
	"zettelstore.de/z/encoding/atom"
	"zettelstore.de/z/encoding/rss"
	"zettelstore.de/z/encoding/xml"
	"zettelstore.de/z/evaluator"
	"zettelstore.de/z/query"
	"zettelstore.de/z/usecase"
	"zettelstore.de/z/web/adapter"
	"zettelstore.de/z/web/server"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

// MakeListHTMLMetaHandler creates a HTTP handler for rendering the list of zettel as HTML.
func (wui *WebUI) MakeListHTMLMetaHandler(queryMeta *usecase.Query, tagZettel *usecase.TagZettel, roleZettel *usecase.RoleZettel, reIndex *usecase.ReIndex) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		urlQuery := r.URL.Query()
		if wui.handleTagZettel(w, r, tagZettel, urlQuery) {
			return
		}
		if wui.handleRoleZettel(w, r, roleZettel, urlQuery) {
			return
		}
		q := adapter.GetQuery(urlQuery)
		q = q.SetDeterministic()
		ctx := r.Context()
		metaSeq, err := queryMeta.Run(ctx, q)
		if err != nil {
			wui.reportError(ctx, w, err)
			return
		}
		if actions := q.Actions(); len(actions) > 0 {
			var tempActions []string
			for _, act := range actions {
				if act == "REINDEX" {
					for _, m := range metaSeq {
						if err = reIndex.Run(ctx, m.Zid); err != nil {
							wui.reportError(ctx, w, err)
							return
						}







					}
					continue
				}
				tempActions = append(tempActions, act)
			}
			actions = tempActions
			if len(actions) > 0 {
				switch actions[0] {
				case "ATOM":
					wui.renderAtom(w, q, metaSeq)
					return
				case "RSS":
					wui.renderRSS(ctx, w, q, metaSeq)
					return
				}
			}
		}
		var content, endnotes *sx.Pair

		if bn := evaluator.QueryAction(ctx, q, metaSeq, wui.rtConfig); bn != nil {
			enc := wui.getSimpleHTMLEncoder(wui.rtConfig.Get(ctx, nil, api.KeyLang))
			content, endnotes, err = enc.BlocksSxn(&ast.BlockSlice{bn})
			if err != nil {
				wui.reportError(ctx, w, err)
				return
			}

		}

		user := server.GetUser(ctx)
		env, rb := wui.createRenderEnv(
			ctx, "list",
			wui.rtConfig.Get(ctx, nil, api.KeyLang),
			wui.rtConfig.GetSiteName(), user)
		if q == nil {
			rb.bindString("heading", sx.String(wui.rtConfig.GetSiteName()))
		} else {
			var sb strings.Builder
			q.PrintHuman(&sb)
			rb.bindString("heading", sx.String(sb.String()))
		}
		rb.bindString("query-value", sx.String(q.String()))
		if tzl := q.GetMetaValues(api.KeyTags); len(tzl) > 0 {
			sxTzl, sxNoTzl := wui.transformTagZettelList(ctx, tagZettel, tzl)
			if !sx.IsNil(sxTzl) {
				rb.bindString("tag-zettel", sxTzl)
			}
			if !sx.IsNil(sxNoTzl) && wui.canCreate(ctx, user) {
				rb.bindString("create-tag-zettel", sxNoTzl)
			}
		}
		if rzl := q.GetMetaValues(api.KeyRole); len(rzl) > 0 {
			sxRzl, sxNoRzl := wui.transformRoleZettelList(ctx, roleZettel, rzl)
			if !sx.IsNil(sxRzl) {
				rb.bindString("role-zettel", sxRzl)
			}
			if !sx.IsNil(sxNoRzl) && wui.canCreate(ctx, user) {
				rb.bindString("create-role-zettel", sxNoRzl)
			}
		}
		rb.bindString("content", content)
		rb.bindString("endnotes", endnotes)


		apiURL := wui.NewURLBuilder('z').AppendQuery(q.String())
		seed, found := q.GetSeed()
		if found {
			apiURL = apiURL.AppendKVQuery(api.QueryKeySeed, strconv.Itoa(seed))
		} else {
			seed = 0
		}

		rb.bindString("plain-url", sx.String(apiURL.String()))
		rb.bindString("data-url", sx.String(apiURL.AppendKVQuery(api.QueryKeyEncoding, api.EncodingData).String()))
		if wui.canCreate(ctx, user) {
			rb.bindString("create-url", sx.String(wui.createNewURL))
			rb.bindString("seed", sx.Int64(seed))

		}
		if rb.err == nil {
			err = wui.renderSxnTemplate(ctx, w, id.ListTemplateZid, env)
		} else {
			err = rb.err
		}
		if err != nil {
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		}
	}
	return withZettel, withoutZettel
}

func (wui *WebUI) prependZettelLink(sxZtl *sx.Pair, name string, u *api.URLBuilder) *sx.Pair {
	link := sx.MakeList(
		shtml.SymA,
		sx.MakeList(
			sxhtml.SymAttr,
			sx.Cons(shtml.SymAttrHref, sx.String(u.String())),
		),
		sx.String(name),
	)
	if sxZtl != nil {
		sxZtl = sxZtl.Cons(sx.String(", "))
	}
	return sxZtl.Cons(link)
}

func (wui *WebUI) renderRSS(ctx context.Context, w http.ResponseWriter, q *query.Query, ml []*meta.Meta) {
	var rssConfig rss.Configuration
	rssConfig.Setup(ctx, wui.rtConfig)
	if actions := q.Actions(); len(actions) > 2 && actions[1] == api.TitleAction {
		rssConfig.Title = strings.Join(actions[2:], " ")
	}
	data := rssConfig.Marshal(q, ml)

	adapter.PrepareHeader(w, rss.ContentType)
	w.WriteHeader(http.StatusOK)
	var err error
	if _, err = io.WriteString(w, xml.Header); err == nil {
		_, err = w.Write(data)
	}
	if err != nil {
		wui.log.Error().Err(err).Msg("unable to write RSS data")
	}
}

func (wui *WebUI) renderAtom(w http.ResponseWriter, q *query.Query, ml []*meta.Meta) {
	var atomConfig atom.Configuration
	atomConfig.Setup(wui.rtConfig)
	if actions := q.Actions(); len(actions) > 2 && actions[1] == api.TitleAction {
		atomConfig.Title = strings.Join(actions[2:], " ")
	}
	data := atomConfig.Marshal(q, ml)

	adapter.PrepareHeader(w, atom.ContentType)
	w.WriteHeader(http.StatusOK)
	var err error







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		}
	}
	return withZettel, withoutZettel
}

func (wui *WebUI) prependZettelLink(sxZtl *sx.Pair, name string, u *api.URLBuilder) *sx.Pair {
	link := sx.MakeList(
		wui.symA,
		sx.MakeList(
			wui.symAttr,
			sx.Cons(wui.symHref, sx.String(u.String())),
		),
		sx.String(name),
	)
	if sxZtl != nil {
		sxZtl = sxZtl.Cons(sx.String(", "))
	}
	return sxZtl.Cons(link)
}

func (wui *WebUI) renderRSS(ctx context.Context, w http.ResponseWriter, q *query.Query, ml []*meta.Meta) {
	var rssConfig rss.Configuration
	rssConfig.Setup(ctx, wui.rtConfig)
	if actions := q.Actions(); len(actions) > 2 && actions[1] == "TITLE" {
		rssConfig.Title = strings.Join(actions[2:], " ")
	}
	data := rssConfig.Marshal(q, ml)

	adapter.PrepareHeader(w, rss.ContentType)
	w.WriteHeader(http.StatusOK)
	var err error
	if _, err = io.WriteString(w, xml.Header); err == nil {
		_, err = w.Write(data)
	}
	if err != nil {
		wui.log.Error().Err(err).Msg("unable to write RSS data")
	}
}

func (wui *WebUI) renderAtom(w http.ResponseWriter, q *query.Query, ml []*meta.Meta) {
	var atomConfig atom.Configuration
	atomConfig.Setup(wui.rtConfig)
	if actions := q.Actions(); len(actions) > 2 && actions[1] == "TITLE" {
		atomConfig.Title = strings.Join(actions[2:], " ")
	}
	data := atomConfig.Marshal(q, ml)

	adapter.PrepareHeader(w, atom.ContentType)
	w.WriteHeader(http.StatusOK)
	var err error
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	}
	ctx := r.Context()
	z, err := tagZettel.Run(ctx, tag)
	if err != nil {
		wui.reportError(ctx, w, err)
		return true
	}
	wui.redirectFound(w, r, wui.NewURLBuilder('h').SetZid(z.Meta.Zid.ZettelID()))
	return true
}

func (wui *WebUI) handleRoleZettel(w http.ResponseWriter, r *http.Request, roleZettel *usecase.RoleZettel, vals url.Values) bool {
	role := vals.Get(api.QueryKeyRole)
	if role == "" {
		return false
	}
	ctx := r.Context()
	z, err := roleZettel.Run(ctx, role)
	if err != nil {
		wui.reportError(ctx, w, err)
		return true
	}
	wui.redirectFound(w, r, wui.NewURLBuilder('h').SetZid(z.Meta.Zid.ZettelID()))
	return true
}







|














|


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	}
	ctx := r.Context()
	z, err := tagZettel.Run(ctx, tag)
	if err != nil {
		wui.reportError(ctx, w, err)
		return true
	}
	wui.redirectFound(w, r, wui.NewURLBuilder('h').SetZid(api.ZettelID(z.Meta.Zid.String())))
	return true
}

func (wui *WebUI) handleRoleZettel(w http.ResponseWriter, r *http.Request, roleZettel *usecase.RoleZettel, vals url.Values) bool {
	role := vals.Get(api.QueryKeyRole)
	if role == "" {
		return false
	}
	ctx := r.Context()
	z, err := roleZettel.Run(ctx, role)
	if err != nil {
		wui.reportError(ctx, w, err)
		return true
	}
	wui.redirectFound(w, r, wui.NewURLBuilder('h').SetZid(api.ZettelID(z.Meta.Zid.String())))
	return true
}

Changes to web/adapter/webui/login.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package webui

import (
	"context"
	"net/http"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package webui

import (
	"context"
	"net/http"

Deleted web/adapter/webui/meta.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2024-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2024-present Detlef Stern
//-----------------------------------------------------------------------------

package webui

import (
	"strings"
	"unicode"
	"unicode/utf8"
)

func capitalizeMetaKey(key string) string {
	var sb strings.Builder
	for i, word := range strings.Split(key, "-") {
		if i > 0 {
			sb.WriteByte(' ')
		}
		if newWord, isSpecial := specialWords[word]; isSpecial {
			if newWord == "" {
				sb.WriteString(strings.ToTitle(word))
			} else {
				sb.WriteString(newWord)
			}
			continue
		}
		r, size := utf8.DecodeRuneInString(word)
		if r == utf8.RuneError {
			sb.WriteString(word)
			continue
		}
		sb.WriteRune(unicode.ToTitle(r))
		sb.WriteString(word[size:])
	}
	return sb.String()
}

var specialWords = map[string]string{
	"css":    "",
	"html":   "",
	"github": "GitHub",
	"http":   "",
	"https":  "",
	"pdf":    "",
	"svg":    "",
	"url":    "",
}
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Deleted web/adapter/webui/meta_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2024-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2024-present Detlef Stern
//-----------------------------------------------------------------------------

package webui

import "testing"

func TestCapitalizeMetaKey(t *testing.T) {
	var testcases = []struct {
		key string
		exp string
	}{
		{"", ""},
		{"alt-url", "Alt URL"},
		{"author", "Author"},
		{"back", "Back"},
		{"box-number", "Box Number"},
		{"cite-key", "Cite Key"},
		{"fedi-url", "Fedi URL"},
		{"github-url", "GitHub URL"},
		{"hshn-bib", "Hshn Bib"},
		{"job-url", "Job URL"},
		{"new-user-id", "New User Id"},
		{"origin-zid", "Origin Zid"},
		{"site-url", "Site URL"},
	}
	for _, tc := range testcases {
		t.Run(tc.key, func(t *testing.T) {
			got := capitalizeMetaKey(tc.key)
			if got != tc.exp {
				t.Errorf("capitalize(%q) == %q, but got %q", tc.key, tc.exp, got)
			}
		})
	}
}
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Changes to web/adapter/webui/rename_zettel.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package webui

import (
	"fmt"
	"net/http"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package webui

import (
	"fmt"
	"net/http"
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			return
		}

		if err = renameZettel.Run(r.Context(), curZid, newZid); err != nil {
			wui.reportError(ctx, w, err)
			return
		}
		wui.redirectFound(w, r, wui.NewURLBuilder('h').SetZid(newZid.ZettelID()))
	}
}







|


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			return
		}

		if err = renameZettel.Run(r.Context(), curZid, newZid); err != nil {
			wui.reportError(ctx, w, err)
			return
		}
		wui.redirectFound(w, r, wui.NewURLBuilder('h').SetZid(api.ZettelID(newZid.String())))
	}
}

Changes to web/adapter/webui/response.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package webui

import (
	"net/http"









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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package webui

import (
	"net/http"

Changes to web/adapter/webui/sxn_code.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2023-present Detlef Stern
//-----------------------------------------------------------------------------

package webui

import (
	"context"
	"fmt"
	"io"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/sx.fossil/sxeval"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

func (wui *WebUI) loadAllSxnCodeZettel(ctx context.Context) (id.Digraph, *sxeval.Binding, error) {
	// getMeta MUST currently use GetZettel, because GetMeta just uses the
	// Index, which might not be current.
	getMeta := func(ctx context.Context, zid id.Zid) (*meta.Meta, error) {
		z, err := wui.box.GetZettel(ctx, zid)
		if err != nil {
			return nil, err
		}
		return z.Meta, nil
	}
	dg := buildSxnCodeDigraph(ctx, id.StartSxnZid, getMeta)
	if dg == nil {
		return nil, wui.rootBinding, nil
	}
	dg = dg.AddVertex(id.BaseSxnZid).AddEdge(id.StartSxnZid, id.BaseSxnZid)
	dg = dg.AddVertex(id.PreludeSxnZid).AddEdge(id.BaseSxnZid, id.PreludeSxnZid)
	dg = dg.TransitiveClosure(id.StartSxnZid)

	if zid, isDAG := dg.IsDAG(); !isDAG {
		return nil, nil, fmt.Errorf("zettel %v is part of a dependency cycle", zid)
	}
	bind := wui.rootBinding.MakeChildBinding("zettel", 128)
	for _, zid := range dg.SortReverse() {
		if err := wui.loadSxnCodeZettel(ctx, zid, bind); err != nil {
			return nil, nil, err
		}
	}
	return dg, bind, nil
}

type getMetaFunc func(context.Context, id.Zid) (*meta.Meta, error)

func buildSxnCodeDigraph(ctx context.Context, startZid id.Zid, getMeta getMetaFunc) id.Digraph {
	m, err := getMeta(ctx, startZid)
	if err != nil {








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|








|

|



|







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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package webui

import (
	"context"
	"fmt"
	"io"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/sx.fossil/sxeval"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

func (wui *WebUI) loadAllSxnCodeZettel(ctx context.Context) (id.Digraph, sxeval.Environment, error) {
	// getMeta MUST currently use GetZettel, because GetMeta just uses the
	// Index, which might not be current.
	getMeta := func(ctx context.Context, zid id.Zid) (*meta.Meta, error) {
		z, err := wui.box.GetZettel(ctx, zid)
		if err != nil {
			return nil, err
		}
		return z.Meta, nil
	}
	dg := buildSxnCodeDigraph(ctx, id.StartSxnZid, getMeta)
	if dg == nil {
		return nil, wui.engine.RootEnvironment(), nil
	}
	dg = dg.AddVertex(id.BaseSxnZid).AddEdge(id.StartSxnZid, id.BaseSxnZid)
	dg = dg.AddVertex(id.PreludeSxnZid).AddEdge(id.BaseSxnZid, id.PreludeSxnZid)
	dg = dg.TransitiveClosure(id.StartSxnZid)

	if zid, isDAG := dg.IsDAG(); !isDAG {
		return nil, nil, fmt.Errorf("zettel %v is part of a dependency cycle", zid)
	}
	env := sxeval.MakeChildEnvironment(wui.engine.RootEnvironment(), "zettel", 128)
	for _, zid := range dg.SortReverse() {
		if err := wui.loadSxnCodeZettel(ctx, zid, env); err != nil {
			return nil, nil, err
		}
	}
	return dg, env, nil
}

type getMetaFunc func(context.Context, id.Zid) (*meta.Meta, error)

func buildSxnCodeDigraph(ctx context.Context, startZid id.Zid, getMeta getMetaFunc) id.Digraph {
	m, err := getMeta(ctx, startZid)
	if err != nil {
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				}
			}
		}
	}
	return dg
}

func (wui *WebUI) loadSxnCodeZettel(ctx context.Context, zid id.Zid, bind *sxeval.Binding) error {
	rdr, err := wui.makeZettelReader(ctx, zid)
	if err != nil {
		return err
	}
	env := sxeval.MakeExecutionEnvironment(bind)
	for {
		form, err2 := rdr.Read()
		if err2 != nil {
			if err2 == io.EOF {
				return nil
			}
			return err2
		}
		wui.log.Debug().Zid(zid).Str("form", form.String()).Msg("Loaded sxn code")

		if _, err2 = env.Eval(form); err2 != nil {
			return err2
		}
	}
}







|




<








|

|




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				}
			}
		}
	}
	return dg
}

func (wui *WebUI) loadSxnCodeZettel(ctx context.Context, zid id.Zid, env sxeval.Environment) error {
	rdr, err := wui.makeZettelReader(ctx, zid)
	if err != nil {
		return err
	}

	for {
		form, err2 := rdr.Read()
		if err2 != nil {
			if err2 == io.EOF {
				return nil
			}
			return err2
		}
		wui.log.Debug().Zid(zid).Str("form", form.Repr()).Msg("Loaded sxn code")

		if _, err2 = wui.engine.Eval(form, env, nil); err2 != nil {
			return err2
		}
	}
}

Changes to web/adapter/webui/template.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package webui

import (
	"bytes"
	"context"
	"fmt"
	"net/http"
	"net/url"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/shtml"
	"zettelstore.de/sx.fossil"
	"zettelstore.de/sx.fossil/sxbuiltins"
	"zettelstore.de/sx.fossil/sxeval"
	"zettelstore.de/sx.fossil/sxhtml"
	"zettelstore.de/sx.fossil/sxreader"
	"zettelstore.de/z/box"
	"zettelstore.de/z/collect"
	"zettelstore.de/z/config"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/web/adapter"
	"zettelstore.de/z/web/server"
	"zettelstore.de/z/zettel"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

func (wui *WebUI) createRenderBinding() *sxeval.Binding {
	root := sxeval.MakeRootBinding(len(specials) + len(builtins) + 3)

	for _, syntax := range specials {
		root.BindSpecial(syntax)
	}
	for _, b := range builtins {
		root.BindBuiltin(b)
	}
	root.BindBuiltin(&sxeval.Builtin{
		Name:     "url-to-html",
		MinArity: 1,
		MaxArity: 1,
		TestPure: sxeval.AssertPure,
		Fn: func(_ *sxeval.Environment, args sx.Vector) (sx.Object, error) {
			text, err := sxbuiltins.GetString(args, 0)
			if err != nil {
				return nil, err
			}
			return wui.url2html(text), nil
		},
	})
	root.BindBuiltin(&sxeval.Builtin{
		Name:     "zid-content-path",
		MinArity: 1,
		MaxArity: 1,
		TestPure: sxeval.AssertPure,
		Fn: func(_ *sxeval.Environment, args sx.Vector) (sx.Object, error) {
			s, err := sxbuiltins.GetString(args, 0)
			if err != nil {
				return nil, err
			}
			zid, err := id.Parse(string(s))
			if err != nil {
				return nil, fmt.Errorf("parsing zettel identifier %q: %w", s, err)
			}
			ub := wui.NewURLBuilder('z').SetZid(zid.ZettelID())
			return sx.String(ub.String()), nil
		},
	})
	root.BindBuiltin(&sxeval.Builtin{
		Name:     "query->url",
		MinArity: 1,
		MaxArity: 1,
		TestPure: sxeval.AssertPure,
		Fn: func(_ *sxeval.Environment, args sx.Vector) (sx.Object, error) {
			qs, err := sxbuiltins.GetString(args, 0)
			if err != nil {
				return nil, err
			}
			u := wui.NewURLBuilder('h').AppendQuery(string(qs))
			return sx.String(u.String()), nil
		},
	})
	root.Freeze()
	return root
}

var (
	specials = []*sxeval.Special{
		&sxbuiltins.QuoteS, &sxbuiltins.QuasiquoteS, // quote, quasiquote
		&sxbuiltins.UnquoteS, &sxbuiltins.UnquoteSplicingS, // unquote, unquote-splicing
		&sxbuiltins.DefVarS, &sxbuiltins.DefConstS, // defvar, defconst
		&sxbuiltins.DefunS, &sxbuiltins.LambdaS, // defun, lambda
		&sxbuiltins.SetXS,     // set!

		&sxbuiltins.IfS,       // if
		&sxbuiltins.BeginS,    // begin
		&sxbuiltins.DefMacroS, // defmacro
	}
	builtins = []*sxeval.Builtin{
		&sxbuiltins.Equal,                // =
		&sxbuiltins.NumGreater,           // >
		&sxbuiltins.NullP,                // null?
		&sxbuiltins.PairP,                // pair?
		&sxbuiltins.Car, &sxbuiltins.Cdr, // car, cdr
		&sxbuiltins.Caar, &sxbuiltins.Cadr, &sxbuiltins.Cdar, &sxbuiltins.Cddr,
		&sxbuiltins.Caaar, &sxbuiltins.Caadr, &sxbuiltins.Cadar, &sxbuiltins.Caddr,
		&sxbuiltins.Cdaar, &sxbuiltins.Cdadr, &sxbuiltins.Cddar, &sxbuiltins.Cdddr,
		&sxbuiltins.List,           // list
		&sxbuiltins.Append,         // append
		&sxbuiltins.Assoc,          // assoc
		&sxbuiltins.Map,            // map
		&sxbuiltins.Apply,          // apply
		&sxbuiltins.Concat,         // concat
		&sxbuiltins.BoundP,         // bound?
		&sxbuiltins.Defined,        // defined?
		&sxbuiltins.CurrentBinding, // current-binding
		&sxbuiltins.BindingLookup,  // binding-lookup
	}
)

func (wui *WebUI) url2html(text sx.String) sx.Object {
	if u, errURL := url.Parse(string(text)); errURL == nil {
		if us := u.String(); us != "" {
			return sx.MakeList(
				shtml.SymA,
				sx.MakeList(
					sxhtml.SymAttr,
					sx.Cons(shtml.SymAttrHref, sx.String(us)),
					sx.Cons(shtml.SymAttrTarget, sx.String("_blank")),
					sx.Cons(shtml.SymAttrRel, sx.String("noopener noreferrer")),
				),
				text)
		}
	}
	return text
}

func (wui *WebUI) getParentEnv(ctx context.Context) (*sxeval.Binding, error) {
	wui.mxZettelBinding.Lock()
	defer wui.mxZettelBinding.Unlock()
	if parentEnv := wui.zettelBinding; parentEnv != nil {
		return parentEnv, nil
	}
	dag, zettelEnv, err := wui.loadAllSxnCodeZettel(ctx)
	if err != nil {
		wui.log.Error().Err(err).Msg("loading zettel sxn")
		return nil, err
	}
	wui.dag = dag
	wui.zettelBinding = zettelEnv
	return zettelEnv, nil
}

// createRenderEnv creates a new environment and populates it with all relevant data for the base template.
func (wui *WebUI) createRenderEnv(ctx context.Context, name, lang, title string, user *meta.Meta) (*sxeval.Binding, renderBinder) {
	userIsValid, userZettelURL, userIdent := wui.getUserRenderData(user)
	parentEnv, err := wui.getParentEnv(ctx)
	bind := parentEnv.MakeChildBinding(name, 128)
	rb := makeRenderBinder(bind, err)
	rb.bindString("lang", sx.String(lang))
	rb.bindString("css-base-url", sx.String(wui.cssBaseURL))
	rb.bindString("css-user-url", sx.String(wui.cssUserURL))
	rb.bindString("title", sx.String(title))
	rb.bindString("home-url", sx.String(wui.homeURL))
	rb.bindString("with-auth", sx.MakeBoolean(wui.withAuth))
	rb.bindString("user-is-valid", sx.MakeBoolean(userIsValid))








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package webui

import (
	"bytes"
	"context"
	"fmt"
	"net/http"
	"net/url"

	"zettelstore.de/client.fossil/api"

	"zettelstore.de/sx.fossil"
	"zettelstore.de/sx.fossil/sxbuiltins"
	"zettelstore.de/sx.fossil/sxeval"
	"zettelstore.de/sx.fossil/sxhtml"
	"zettelstore.de/sx.fossil/sxreader"
	"zettelstore.de/z/box"
	"zettelstore.de/z/collect"
	"zettelstore.de/z/config"
	"zettelstore.de/z/parser"
	"zettelstore.de/z/web/adapter"
	"zettelstore.de/z/web/server"
	"zettelstore.de/z/zettel"
	"zettelstore.de/z/zettel/id"
	"zettelstore.de/z/zettel/meta"
)

func (wui *WebUI) createRenderEngine() *sxeval.Engine {
	root := sxeval.MakeRootEnvironment(len(specials) + len(builtins) + 3)
	engine := sxeval.MakeEngine(wui.sf, root)
	for _, syntax := range specials {
		engine.BindSpecial(syntax)
	}
	for _, b := range builtins {
		engine.BindBuiltin(b)
	}
	engine.BindBuiltin(&sxeval.Builtin{
		Name:     "url-to-html",
		MinArity: 1,
		MaxArity: 1,
		TestPure: sxeval.AssertPure,
		Fn: func(_ *sxeval.Frame, args []sx.Object) (sx.Object, error) {
			text, err := sxbuiltins.GetString(args, 0)
			if err != nil {
				return nil, err
			}
			return wui.url2html(text), nil
		},
	})
	engine.BindBuiltin(&sxeval.Builtin{
		Name:     "zid-content-path",
		MinArity: 1,
		MaxArity: 1,
		TestPure: sxeval.AssertPure,
		Fn: func(_ *sxeval.Frame, args []sx.Object) (sx.Object, error) {
			s, err := sxbuiltins.GetString(args, 0)
			if err != nil {
				return nil, err
			}
			zid, err := id.Parse(s.String())
			if err != nil {
				return nil, fmt.Errorf("parsing zettel identfier %q: %w", s, err)
			}
			ub := wui.NewURLBuilder('z').SetZid(api.ZettelID(zid.String()))
			return sx.String(ub.String()), nil
		},
	})
	engine.BindBuiltin(&sxeval.Builtin{
		Name:     "query->url",
		MinArity: 1,
		MaxArity: 1,
		TestPure: sxeval.AssertPure,
		Fn: func(_ *sxeval.Frame, args []sx.Object) (sx.Object, error) {
			qs, err := sxbuiltins.GetString(args, 0)
			if err != nil {
				return nil, err
			}
			u := wui.NewURLBuilder('h').AppendQuery(qs.String())
			return sx.String(u.String()), nil
		},
	})
	root.Freeze()
	return engine
}

var (
	specials = []*sxeval.Special{
		&sxbuiltins.QuoteS, &sxbuiltins.QuasiquoteS, // quote, quasiquote
		&sxbuiltins.UnquoteS, &sxbuiltins.UnquoteSplicingS, // unquote, unquote-splicing
		&sxbuiltins.DefVarS, &sxbuiltins.DefConstS, // defvar, defconst
		&sxbuiltins.DefunS, &sxbuiltins.LambdaS, // defun, lambda
		&sxbuiltins.SetXS,     // set!
		&sxbuiltins.CondS,     // cond
		&sxbuiltins.IfS,       // if
		&sxbuiltins.BeginS,    // begin
		&sxbuiltins.DefMacroS, // defmacro
	}
	builtins = []*sxeval.Builtin{
		&sxbuiltins.Identical,            // ==

		&sxbuiltins.NullP,                // null?
		&sxbuiltins.PairP,                // pair?
		&sxbuiltins.Car, &sxbuiltins.Cdr, // car, cdr
		&sxbuiltins.Caar, &sxbuiltins.Cadr, &sxbuiltins.Cdar, &sxbuiltins.Cddr,
		&sxbuiltins.Caaar, &sxbuiltins.Caadr, &sxbuiltins.Cadar, &sxbuiltins.Caddr,
		&sxbuiltins.Cdaar, &sxbuiltins.Cdadr, &sxbuiltins.Cddar, &sxbuiltins.Cdddr,
		&sxbuiltins.List,         // list
		&sxbuiltins.Append,       // append
		&sxbuiltins.Assoc,        // assoc
		&sxbuiltins.Map,          // map
		&sxbuiltins.Apply,        // apply
		&sxbuiltins.StringAppend, // string-append
		&sxbuiltins.BoundP,       // bound?
		&sxbuiltins.Defined,      // defined?
		&sxbuiltins.CurrentEnv,   // current-environment
		&sxbuiltins.EnvLookup,    // environment-lookup
	}
)

func (wui *WebUI) url2html(text sx.String) sx.Object {
	if u, errURL := url.Parse(text.String()); errURL == nil {
		if us := u.String(); us != "" {
			return sx.MakeList(
				wui.symA,
				sx.MakeList(
					wui.symAttr,
					sx.Cons(wui.symHref, sx.String(us)),
					sx.Cons(wui.sf.MustMake("target"), sx.String("_blank")),
					sx.Cons(wui.sf.MustMake("rel"), sx.String("noopener noreferrer")),
				),
				text)
		}
	}
	return text
}

func (wui *WebUI) getParentEnv(ctx context.Context) (sxeval.Environment, error) {
	wui.mxZettelEnv.Lock()
	defer wui.mxZettelEnv.Unlock()
	if parentEnv := wui.zettelEnv; parentEnv != nil {
		return parentEnv, nil
	}
	dag, zettelEnv, err := wui.loadAllSxnCodeZettel(ctx)
	if err != nil {
		wui.log.Error().Err(err).Msg("loading zettel sxn")
		return nil, err
	}
	wui.dag = dag
	wui.zettelEnv = zettelEnv
	return zettelEnv, nil
}

// createRenderEnv creates a new environment and populates it with all relevant data for the base template.
func (wui *WebUI) createRenderEnv(ctx context.Context, name, lang, title string, user *meta.Meta) (sxeval.Environment, renderBinder) {
	userIsValid, userZettelURL, userIdent := wui.getUserRenderData(user)
	parentEnv, err := wui.getParentEnv(ctx)
	env := sxeval.MakeChildEnvironment(parentEnv, name, 128)
	rb := makeRenderBinder(wui.sf, env, err)
	rb.bindString("lang", sx.String(lang))
	rb.bindString("css-base-url", sx.String(wui.cssBaseURL))
	rb.bindString("css-user-url", sx.String(wui.cssUserURL))
	rb.bindString("title", sx.String(title))
	rb.bindString("home-url", sx.String(wui.homeURL))
	rb.bindString("with-auth", sx.MakeBoolean(wui.withAuth))
	rb.bindString("user-is-valid", sx.MakeBoolean(userIsValid))
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	}
	rb.bindString("new-zettel-links", wui.fetchNewTemplatesSxn(ctx, user))
	rb.bindString("search-url", sx.String(wui.searchURL))
	rb.bindString("query-key-query", sx.String(api.QueryKeyQuery))
	rb.bindString("query-key-seed", sx.String(api.QueryKeySeed))
	rb.bindString("FOOTER", wui.calculateFooterSxn(ctx)) // TODO: use real footer
	rb.bindString("debug-mode", sx.MakeBoolean(wui.debug))
	rb.bindSymbol(symMetaHeader, sx.Nil())
	rb.bindSymbol(symDetail, sx.Nil())
	return bind, rb
}

func (wui *WebUI) getUserRenderData(user *meta.Meta) (bool, string, string) {
	if user == nil {
		return false, "", ""
	}
	return true, wui.NewURLBuilder('h').SetZid(user.Zid.ZettelID()).String(), user.GetDefault(api.KeyUserID, "")
}

type renderBinder struct {
	err     error

	binding *sxeval.Binding
}

func makeRenderBinder(bind *sxeval.Binding, err error) renderBinder {
	return renderBinder{binding: bind, err: err}
}
func (rb *renderBinder) bindString(key string, obj sx.Object) {
	if rb.err == nil {





		rb.err = rb.binding.Bind(sx.MakeSymbol(key), obj)
	}
}
func (rb *renderBinder) bindSymbol(sym *sx.Symbol, obj sx.Object) {
	if rb.err == nil {
		rb.err = rb.binding.Bind(sym, obj)
	}
}
func (rb *renderBinder) bindKeyValue(key string, value string) {
	rb.bindString("meta-"+key, sx.String(value))
	if kt := meta.Type(key); kt.IsSet {
		rb.bindString("set-meta-"+key, makeStringList(meta.ListFromValue(value)))
	}
}
func (rb *renderBinder) rebindResolved(key, defKey string) {
	if rb.err == nil {


		if obj, found := rb.binding.Resolve(sx.MakeSymbol(key)); found {
			rb.bindString(defKey, obj)

		}



	}
}

func (wui *WebUI) bindCommonZettelData(ctx context.Context, rb *renderBinder, user, m *meta.Meta, content *zettel.Content) {
	strZid := m.Zid.String()
	apiZid := api.ZettelID(strZid)
	newURLBuilder := wui.NewURLBuilder







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	}
	rb.bindString("new-zettel-links", wui.fetchNewTemplatesSxn(ctx, user))
	rb.bindString("search-url", sx.String(wui.searchURL))
	rb.bindString("query-key-query", sx.String(api.QueryKeyQuery))
	rb.bindString("query-key-seed", sx.String(api.QueryKeySeed))
	rb.bindString("FOOTER", wui.calculateFooterSxn(ctx)) // TODO: use real footer
	rb.bindString("debug-mode", sx.MakeBoolean(wui.debug))
	rb.bindSymbol(wui.symMetaHeader, sx.Nil())
	rb.bindSymbol(wui.symDetail, sx.Nil())
	return env, rb
}

func (wui *WebUI) getUserRenderData(user *meta.Meta) (bool, string, string) {
	if user == nil {
		return false, "", ""
	}
	return true, wui.NewURLBuilder('h').SetZid(api.ZettelID(user.Zid.String())).String(), user.GetDefault(api.KeyUserID, "")
}

type renderBinder struct {
	err  error
	make func(string) (*sx.Symbol, error)
	env  sxeval.Environment
}

func makeRenderBinder(sf sx.SymbolFactory, env sxeval.Environment, err error) renderBinder {
	return renderBinder{make: sf.Make, env: env, err: err}
}
func (rb *renderBinder) bindString(key string, obj sx.Object) {
	if rb.err == nil {
		sym, err := rb.make(key)
		if err == nil {
			rb.err = rb.env.Bind(sym, obj)
			return
		}
		rb.err = err
	}
}
func (rb *renderBinder) bindSymbol(sym *sx.Symbol, obj sx.Object) {
	if rb.err == nil {
		rb.err = rb.env.Bind(sym, obj)
	}
}
func (rb *renderBinder) bindKeyValue(key string, value string) {
	rb.bindString("meta-"+key, sx.String(value))
	if kt := meta.Type(key); kt.IsSet {
		rb.bindString("set-meta-"+key, makeStringList(meta.ListFromValue(value)))
	}
}
func (rb *renderBinder) rebindResolved(key, defKey string) {
	if rb.err == nil {
		sym, err := rb.make(key)
		if err == nil {
			if obj, found := sxeval.Resolve(rb.env, sym); found {
				rb.bindString(defKey, obj)
				return
			}
			return
		}
		rb.err = err
	}
}

func (wui *WebUI) bindCommonZettelData(ctx context.Context, rb *renderBinder, user, m *meta.Meta, content *zettel.Content) {
	strZid := m.Zid.String()
	apiZid := api.ZettelID(strZid)
	newURLBuilder := wui.NewURLBuilder
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	}
	if wui.canDelete(ctx, user, m) {
		rb.bindString("delete-url", sx.String(newURLBuilder('d').SetZid(apiZid).String()))
	}
	if val, found := m.Get(api.KeyUselessFiles); found {
		rb.bindString("useless", sx.Cons(sx.String(val), nil))
	}
	queryContext := strZid + " " + api.ContextDirective
	rb.bindString("context-url", sx.String(newURLBuilder('h').AppendQuery(queryContext).String()))
	queryContext += " " + api.FullDirective
	rb.bindString("context-full-url", sx.String(newURLBuilder('h').AppendQuery(queryContext).String()))
	if wui.canRefresh(user) {
		rb.bindString("reindex-url", sx.String(newURLBuilder('h').AppendQuery(
			strZid+" "+api.IdentDirective+api.ActionSeparator+api.ReIndexAction).String()))
	}

	// Ensure to have title, role, tags, and syntax included as "meta-*"
	rb.bindKeyValue(api.KeyTitle, m.GetDefault(api.KeyTitle, ""))
	rb.bindKeyValue(api.KeyRole, m.GetDefault(api.KeyRole, ""))
	rb.bindKeyValue(api.KeyTags, m.GetDefault(api.KeyTags, ""))
	rb.bindKeyValue(api.KeySyntax, m.GetDefault(api.KeySyntax, meta.DefaultSyntax))
	var metaPairs sx.ListBuilder

	for _, p := range m.ComputedPairs() {
		key, value := p.Key, p.Value
		metaPairs.Add(sx.Cons(sx.String(key), sx.String(value)))

		rb.bindKeyValue(key, value)
	}
	rb.bindString("metapairs", metaPairs.List())
}

func (wui *WebUI) fetchNewTemplatesSxn(ctx context.Context, user *meta.Meta) (lst *sx.Pair) {
	if !wui.canCreate(ctx, user) {
		return nil
	}
	ctx = box.NoEnrichContext(ctx)







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	}
	if wui.canDelete(ctx, user, m) {
		rb.bindString("delete-url", sx.String(newURLBuilder('d').SetZid(apiZid).String()))
	}
	if val, found := m.Get(api.KeyUselessFiles); found {
		rb.bindString("useless", sx.Cons(sx.String(val), nil))
	}

	rb.bindString("context-url", sx.String(newURLBuilder('h').AppendQuery(strZid+" "+api.ContextDirective).String()))


	if wui.canRefresh(user) {
		rb.bindString("reindex-url", sx.String(newURLBuilder('h').AppendQuery(strZid+" "+api.IdentDirective+api.ActionSeparator+"REINDEX").String()))

	}

	// Ensure to have title, role, tags, and syntax included as "meta-*"
	rb.bindKeyValue(api.KeyTitle, m.GetDefault(api.KeyTitle, ""))
	rb.bindKeyValue(api.KeyRole, m.GetDefault(api.KeyRole, ""))
	rb.bindKeyValue(api.KeyTags, m.GetDefault(api.KeyTags, ""))
	rb.bindKeyValue(api.KeySyntax, m.GetDefault(api.KeySyntax, ""))
	sentinel := sx.Cons(nil, nil)
	curr := sentinel
	for _, p := range m.ComputedPairs() {
		key, value := p.Key, p.Value
		curr = curr.AppendBang(sx.Cons(sx.String(key), sx.String(value)))

		rb.bindKeyValue(key, value)
	}
	rb.bindString("metapairs", sentinel.Tail())
}

func (wui *WebUI) fetchNewTemplatesSxn(ctx context.Context, user *meta.Meta) (lst *sx.Pair) {
	if !wui.canCreate(ctx, user) {
		return nil
	}
	ctx = box.NoEnrichContext(ctx)
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		if err2 != nil {
			continue
		}
		if !wui.policy.CanRead(user, z.Meta) {
			continue
		}
		text := sx.String(parser.NormalizedSpacedText(z.Meta.GetTitle()))
		link := sx.String(wui.NewURLBuilder('c').SetZid(zid.ZettelID()).
			AppendKVQuery(queryKeyAction, valueActionNew).String())

		lst = lst.Cons(sx.Cons(text, link))
	}
	return lst
}
func (wui *WebUI) calculateFooterSxn(ctx context.Context) *sx.Pair {







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		if err2 != nil {
			continue
		}
		if !wui.policy.CanRead(user, z.Meta) {
			continue
		}
		text := sx.String(parser.NormalizedSpacedText(z.Meta.GetTitle()))
		link := sx.String(wui.NewURLBuilder('c').SetZid(api.ZettelID(zid.String())).
			AppendKVQuery(queryKeyAction, valueActionNew).String())

		lst = lst.Cons(sx.Cons(text, link))
	}
	return lst
}
func (wui *WebUI) calculateFooterSxn(ctx context.Context) *sx.Pair {
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				return content
			}
		}
	}
	return nil
}

func (wui *WebUI) getSxnTemplate(ctx context.Context, zid id.Zid, bind *sxeval.Binding) (sxeval.Expr, error) {
	if t := wui.getSxnCache(zid); t != nil {
		return t, nil
	}

	reader, err := wui.makeZettelReader(ctx, zid)
	if err != nil {
		return nil, err
	}

	objs, err := reader.ReadAll()
	if err != nil {
		wui.log.Error().Err(err).Zid(zid).Msg("reading sxn template")
		return nil, err
	}
	if len(objs) != 1 {
		return nil, fmt.Errorf("expected 1 expression in template, but got %d", len(objs))
	}
	env := sxeval.MakeExecutionEnvironment(bind)
	t, err := env.Compile(objs[0])
	if err != nil {
		return nil, err
	}

	wui.setSxnCache(zid, t)
	return t, nil
}
func (wui *WebUI) makeZettelReader(ctx context.Context, zid id.Zid) (*sxreader.Reader, error) {
	ztl, err := wui.box.GetZettel(ctx, zid)
	if err != nil {
		return nil, err
	}

	reader := sxreader.MakeReader(bytes.NewReader(ztl.Content.AsBytes()))
	return reader, nil
}

func (wui *WebUI) evalSxnTemplate(ctx context.Context, zid id.Zid, bind *sxeval.Binding) (sx.Object, error) {
	templateExpr, err := wui.getSxnTemplate(ctx, zid, bind)
	if err != nil {
		return nil, err
	}
	env := sxeval.MakeExecutionEnvironment(bind)
	return env.Run(templateExpr)
}

func (wui *WebUI) renderSxnTemplate(ctx context.Context, w http.ResponseWriter, templateID id.Zid, bind *sxeval.Binding) error {
	return wui.renderSxnTemplateStatus(ctx, w, http.StatusOK, templateID, bind)
}
func (wui *WebUI) renderSxnTemplateStatus(ctx context.Context, w http.ResponseWriter, code int, templateID id.Zid, bind *sxeval.Binding) error {
	detailObj, err := wui.evalSxnTemplate(ctx, templateID, bind)
	if err != nil {
		return err
	}
	bind.Bind(symDetail, detailObj)

	pageObj, err := wui.evalSxnTemplate(ctx, id.BaseTemplateZid, bind)
	if err != nil {
		return err
	}
	if msg := wui.log.Debug(); msg != nil {
		// pageObj.String() can be expensive to calculate.
		msg.Str("page", pageObj.String()).Msg("render")
	}

	gen := sxhtml.NewGenerator(sxhtml.WithNewline)
	var sb bytes.Buffer
	_, err = gen.WriteHTML(&sb, pageObj)
	if err != nil {
		return err
	}
	wui.prepareAndWriteHeader(w, code)
	if _, err = w.Write(sb.Bytes()); err != nil {







|

















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				return content
			}
		}
	}
	return nil
}

func (wui *WebUI) getSxnTemplate(ctx context.Context, zid id.Zid, env sxeval.Environment) (sxeval.Expr, error) {
	if t := wui.getSxnCache(zid); t != nil {
		return t, nil
	}

	reader, err := wui.makeZettelReader(ctx, zid)
	if err != nil {
		return nil, err
	}

	objs, err := reader.ReadAll()
	if err != nil {
		wui.log.Error().Err(err).Zid(zid).Msg("reading sxn template")
		return nil, err
	}
	if len(objs) != 1 {
		return nil, fmt.Errorf("expected 1 expression in template, but got %d", len(objs))
	}

	t, err := wui.engine.Parse(objs[0], env)
	if err != nil {
		return nil, err
	}

	wui.setSxnCache(zid, wui.engine.Rework(t, env))
	return t, nil
}
func (wui *WebUI) makeZettelReader(ctx context.Context, zid id.Zid) (*sxreader.Reader, error) {
	ztl, err := wui.box.GetZettel(ctx, zid)
	if err != nil {
		return nil, err
	}

	reader := sxreader.MakeReader(bytes.NewReader(ztl.Content.AsBytes()), sxreader.WithSymbolFactory(wui.sf))
	return reader, nil
}

func (wui *WebUI) evalSxnTemplate(ctx context.Context, zid id.Zid, env sxeval.Environment) (sx.Object, error) {
	templateExpr, err := wui.getSxnTemplate(ctx, zid, env)
	if err != nil {
		return nil, err
	}

	return wui.engine.Execute(templateExpr, env, nil)
}

func (wui *WebUI) renderSxnTemplate(ctx context.Context, w http.ResponseWriter, templateID id.Zid, env sxeval.Environment) error {
	return wui.renderSxnTemplateStatus(ctx, w, http.StatusOK, templateID, env)
}
func (wui *WebUI) renderSxnTemplateStatus(ctx context.Context, w http.ResponseWriter, code int, templateID id.Zid, env sxeval.Environment) error {
	detailObj, err := wui.evalSxnTemplate(ctx, templateID, env)
	if err != nil {
		return err
	}
	env.Bind(wui.symDetail, detailObj)

	pageObj, err := wui.evalSxnTemplate(ctx, id.BaseTemplateZid, env)
	if err != nil {
		return err
	}


	wui.log.Debug().Str("page", pageObj.Repr()).Msg("render")


	gen := sxhtml.NewGenerator(wui.sf, sxhtml.WithNewline)
	var sb bytes.Buffer
	_, err = gen.WriteHTML(&sb, pageObj)
	if err != nil {
		return err
	}
	wui.prepareAndWriteHeader(w, code)
	if _, err = w.Write(sb.Bytes()); err != nil {

Changes to web/adapter/webui/webui.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

// Package webui provides web-UI handlers for web requests.
package webui

import (
	"context"








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<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package webui provides web-UI handlers for web requests.
package webui

import (
	"context"
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	refreshURL    string
	withAuth      bool
	loginURL      string
	logoutURL     string
	searchURL     string
	createNewURL  string


	rootBinding     *sxeval.Binding
	mxZettelBinding sync.Mutex
	zettelBinding   *sxeval.Binding
	dag             id.Digraph
	genHTML         *sxhtml.Generator







}

// webuiBox contains all box methods that are needed for WebUI operation.
//
// Note: these function must not do auth checking.
type webuiBox interface {
	CanCreateZettel(context.Context) bool
	GetZettel(context.Context, id.Zid) (zettel.Zettel, error)
	GetMeta(context.Context, id.Zid) (*meta.Meta, error)
	CanUpdateZettel(context.Context, zettel.Zettel) bool
	AllowRenameZettel(context.Context, id.Zid) bool
	CanDeleteZettel(context.Context, id.Zid) bool
}

// New creates a new WebUI struct.
func New(log *logger.Logger, ab server.AuthBuilder, authz auth.AuthzManager, rtConfig config.Config, token auth.TokenManager,
	mgr box.Manager, pol auth.Policy, evalZettel *usecase.Evaluate) *WebUI {
	loginoutBase := ab.NewURLBuilder('i')


	wui := &WebUI{
		log:      log,
		debug:    kernel.Main.GetConfig(kernel.CoreService, kernel.CoreDebug).(bool),
		ab:       ab,
		rtConfig: rtConfig,
		authz:    authz,







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>
>


















>







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	refreshURL    string
	withAuth      bool
	loginURL      string
	logoutURL     string
	searchURL     string
	createNewURL  string

	sf          sx.SymbolFactory
	engine      *sxeval.Engine
	mxZettelEnv sync.Mutex
	zettelEnv   sxeval.Environment
	dag         id.Digraph
	genHTML     *sxhtml.Generator

	symMetaHeader *sx.Symbol
	symDetail     *sx.Symbol
	symA, symHref *sx.Symbol
	symSpan       *sx.Symbol
	symAttr       *sx.Symbol
	symAttrOpen   *sx.Symbol
}

// webuiBox contains all box methods that are needed for WebUI operation.
//
// Note: these function must not do auth checking.
type webuiBox interface {
	CanCreateZettel(context.Context) bool
	GetZettel(context.Context, id.Zid) (zettel.Zettel, error)
	GetMeta(context.Context, id.Zid) (*meta.Meta, error)
	CanUpdateZettel(context.Context, zettel.Zettel) bool
	AllowRenameZettel(context.Context, id.Zid) bool
	CanDeleteZettel(context.Context, id.Zid) bool
}

// New creates a new WebUI struct.
func New(log *logger.Logger, ab server.AuthBuilder, authz auth.AuthzManager, rtConfig config.Config, token auth.TokenManager,
	mgr box.Manager, pol auth.Policy, evalZettel *usecase.Evaluate) *WebUI {
	loginoutBase := ab.NewURLBuilder('i')
	sf := sx.MakeMappedFactory(256)

	wui := &WebUI{
		log:      log,
		debug:    kernel.Main.GetConfig(kernel.CoreService, kernel.CoreDebug).(bool),
		ab:       ab,
		rtConfig: rtConfig,
		authz:    authz,
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		refreshURL:    ab.NewURLBuilder('g').AppendKVQuery("_c", "r").String(),
		withAuth:      authz.WithAuth(),
		loginURL:      loginoutBase.String(),
		logoutURL:     loginoutBase.AppendKVQuery("logout", "").String(),
		searchURL:     ab.NewURLBuilder('h').String(),
		createNewURL:  ab.NewURLBuilder('c').String(),


		zettelBinding: nil,
		genHTML:       sxhtml.NewGenerator(sxhtml.WithNewline),







	}
	wui.rootBinding = wui.createRenderBinding()
	wui.observe(box.UpdateInfo{Box: mgr, Reason: box.OnReload, Zid: id.Invalid})
	mgr.RegisterObserver(wui.observe)
	return wui
}

var (
	symDetail     = sx.MakeSymbol("DETAIL")
	symMetaHeader = sx.MakeSymbol("META-HEADER")
)

func (wui *WebUI) observe(ci box.UpdateInfo) {
	wui.mxCache.Lock()
	if ci.Reason == box.OnReload {
		clear(wui.templateCache)
	} else {
		delete(wui.templateCache, ci.Zid)
	}
	wui.mxCache.Unlock()

	wui.mxZettelBinding.Lock()
	if ci.Reason == box.OnReload || wui.dag.HasVertex(ci.Zid) {
		wui.zettelBinding = nil
		wui.dag = nil
	}
	wui.mxZettelBinding.Unlock()
}

func (wui *WebUI) setSxnCache(zid id.Zid, expr sxeval.Expr) {
	wui.mxCache.Lock()
	wui.templateCache[zid] = expr
	wui.mxCache.Unlock()
}







>
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|





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<









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		refreshURL:    ab.NewURLBuilder('g').AppendKVQuery("_c", "r").String(),
		withAuth:      authz.WithAuth(),
		loginURL:      loginoutBase.String(),
		logoutURL:     loginoutBase.AppendKVQuery("logout", "").String(),
		searchURL:     ab.NewURLBuilder('h').String(),
		createNewURL:  ab.NewURLBuilder('c').String(),

		sf:            sf,
		zettelEnv:     nil,
		genHTML:       sxhtml.NewGenerator(sf, sxhtml.WithNewline),
		symDetail:     sf.MustMake("DETAIL"),
		symMetaHeader: sf.MustMake("META-HEADER"),
		symA:          sf.MustMake("a"),
		symHref:       sf.MustMake("href"),
		symSpan:       sf.MustMake("span"),
		symAttr:       sf.MustMake(sxhtml.NameSymAttr),
		symAttrOpen:   sf.MustMake("open"),
	}
	wui.engine = wui.createRenderEngine()
	wui.observe(box.UpdateInfo{Box: mgr, Reason: box.OnReload, Zid: id.Invalid})
	mgr.RegisterObserver(wui.observe)
	return wui
}






func (wui *WebUI) observe(ci box.UpdateInfo) {
	wui.mxCache.Lock()
	if ci.Reason == box.OnReload {
		clear(wui.templateCache)
	} else {
		delete(wui.templateCache, ci.Zid)
	}
	wui.mxCache.Unlock()

	wui.mxZettelEnv.Lock()
	if ci.Reason == box.OnReload || wui.dag.HasVertex(ci.Zid) {
		wui.zettelEnv = nil
		wui.dag = nil
	}
	wui.mxZettelEnv.Unlock()
}

func (wui *WebUI) setSxnCache(zid id.Zid, expr sxeval.Expr) {
	wui.mxCache.Lock()
	wui.templateCache[zid] = expr
	wui.mxCache.Unlock()
}

Changes to web/content/content.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

// Package content manages content handling within the web package.
// It translates syntax values into content types, and vice versa.
package content

import (








<
<
<







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8



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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package content manages content handling within the web package.
// It translates syntax values into content types, and vice versa.
package content

import (

Changes to web/content/content_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

package content_test

import (
	"testing"









<
<
<







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5
6
7
8



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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package content_test

import (
	"testing"

Changes to web/server/impl/http.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package impl

import (
	"context"
	"net"








<
<
<







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7
8



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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package impl

import (
	"context"
	"net"
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	writeTimeout    = 10 * time.Second
	idleTimeout     = 120 * time.Second
)

// httpServer is a HTTP server.
type httpServer struct {
	http.Server

}

// initializeHTTPServer creates a new HTTP server object.
func (srv *httpServer) initializeHTTPServer(addr string, handler http.Handler) {
	if addr == "" {
		addr = ":http"
	}
	srv.Server = http.Server{
		Addr:    addr,
		Handler: handler,

		// See: https://blog.cloudflare.com/exposing-go-on-the-internet/
		ReadTimeout:  readTimeout,
		WriteTimeout: writeTimeout,
		IdleTimeout:  idleTimeout,
	}

}

// SetDebug enables debugging goroutines that are started by the server.
// Basically, just the timeout values are reset. This method should be called
// before running the server.
func (srv *httpServer) SetDebug() {
	srv.ReadTimeout = 0







>
















>







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	writeTimeout    = 10 * time.Second
	idleTimeout     = 120 * time.Second
)

// httpServer is a HTTP server.
type httpServer struct {
	http.Server
	waitStop chan struct{}
}

// initializeHTTPServer creates a new HTTP server object.
func (srv *httpServer) initializeHTTPServer(addr string, handler http.Handler) {
	if addr == "" {
		addr = ":http"
	}
	srv.Server = http.Server{
		Addr:    addr,
		Handler: handler,

		// See: https://blog.cloudflare.com/exposing-go-on-the-internet/
		ReadTimeout:  readTimeout,
		WriteTimeout: writeTimeout,
		IdleTimeout:  idleTimeout,
	}
	srv.waitStop = make(chan struct{})
}

// SetDebug enables debugging goroutines that are started by the server.
// Basically, just the timeout values are reset. This method should be called
// before running the server.
func (srv *httpServer) SetDebug() {
	srv.ReadTimeout = 0

Changes to web/server/impl/impl.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

// Package impl provides the Zettelstore web service.
package impl

import (
	"context"








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package impl provides the Zettelstore web service.
package impl

import (
	"context"

Changes to web/server/impl/router.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package impl

import (
	"io"
	"net/http"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package impl

import (
	"io"
	"net/http"
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	}
	if len(t) == 0 {
		rt.log.Debug().Msg("no auth token found in request") // IP already logged: ServeHTTP
		return r
	}
	tokenData, err := rt.auth.CheckToken(t, k)
	if err != nil {
		rt.log.Info().Err(err).HTTPIP(r).Msg("invalid auth token")
		return r
	}
	ctx := r.Context()
	user, err := rt.ur.GetUser(ctx, tokenData.Zid, tokenData.Ident)
	if err != nil {
		rt.log.Info().Zid(tokenData.Zid).Str("ident", tokenData.Ident).Err(err).HTTPIP(r).Msg("auth user not found")
		return r
	}
	return r.WithContext(updateContext(ctx, user, &tokenData))
}

func getSessionToken(r *http.Request) []byte {
	cookie, err := r.Cookie(sessionName)







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	}
	if len(t) == 0 {
		rt.log.Debug().Msg("no auth token found in request") // IP already logged: ServeHTTP
		return r
	}
	tokenData, err := rt.auth.CheckToken(t, k)
	if err != nil {
		rt.log.Sense().Err(err).HTTPIP(r).Msg("invalid auth token")
		return r
	}
	ctx := r.Context()
	user, err := rt.ur.GetUser(ctx, tokenData.Zid, tokenData.Ident)
	if err != nil {
		rt.log.Sense().Zid(tokenData.Zid).Str("ident", tokenData.Ident).Err(err).HTTPIP(r).Msg("auth user not found")
		return r
	}
	return r.WithContext(updateContext(ctx, user, &tokenData))
}

func getSessionToken(r *http.Request) []byte {
	cookie, err := r.Cookie(sessionName)

Changes to web/server/server.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package server provides the Zettelstore web service.
package server

import (
	"context"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package server provides the Zettelstore web service.
package server

import (
	"context"

Changes to www/build.md.

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   Let's assume, you have created `$HOME/fossils`.
1. Clone the repository: `fossil clone https://zettelstore.de/ $HOME/fossils/zettelstore.fossil`.
1. Create a working directory.
   Let's assume, you have created `$HOME/zettelstore`.
1. Change into this directory: `cd $HOME/zettelstore`.
1. Open development: `fossil open $HOME/fossils/zettelstore.fossil`.

## Tools to build, test, and manage
In the directory `tools` there are some Go files to automate most aspects of
building and testing, (hopefully) platform-independent.

The build script is called as:

```
go run tools/build/build.go [-v] COMMAND
```

The flag `-v` enables the verbose mode.
It outputs all commands called by the tool.

Some important `COMMAND`s are:

* `build`: builds the software with correct version information and puts it
  into a freshly created directory `bin`.
* `check`: checks the current state of the working directory to be ready for
  release (or commit).

* `version`: prints the current version information.



Therefore, the easiest way to build your own version of the Zettelstore
software is to execute the command

```
go run tools/build/build.go build
```

In case of errors, please send the output of the verbose execution:

```
go run tools/build/build.go -v build
```

Other tools are:

* `go run tools/clean/clean.go` cleans your Go development worspace.
* `go run tools/check/check.go` executes all linters and unit tests.
  If you add the option `-r` linters are more strict, to be used for a
  release version.
* `go run tools/devtools/devtools.go` install all needed software (see above).
* `go run tools/htmllint/htmllint.go [URL]` checks all generated HTML of a
  Zettelstore accessible at the given URL (default: http://localhost:23123).
* `go run tools/testapi/testapi.go` tests the API against a running
  Zettelstore, which is started automatically.

## A note on the use of Fossil
Zettelstore is managed by the Fossil version control system.
Fossil is an alternative to the ubiquitous Git version control system.
However, Go seems to prefer Git and popular platforms that just support Git.

Some dependencies of Zettelstore, namely [Zettelstore
client](https://zettelstore.de/client) and [sx](https://zettelstore.de/sx), are







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   Let's assume, you have created `$HOME/fossils`.
1. Clone the repository: `fossil clone https://zettelstore.de/ $HOME/fossils/zettelstore.fossil`.
1. Create a working directory.
   Let's assume, you have created `$HOME/zettelstore`.
1. Change into this directory: `cd $HOME/zettelstore`.
1. Open development: `fossil open $HOME/fossils/zettelstore.fossil`.

## The build tool
In the directory `tools` there is a Go file called `build.go`.
It automates most aspects, (hopefully) platform-independent.

The script is called as:

```
go run tools/build.go [-v] COMMAND
```

The flag `-v` enables the verbose mode.
It outputs all commands called by the tool.

Some important `COMMAND`s are:

* `build`: builds the software with correct version information and puts it
  into a freshly created directory `bin`.
* `check`: checks the current state of the working directory to be ready for
  release (or commit).
* `clean`: removes the build directories and cleans the Go cache.
* `version`: prints the current version information.
* `tools`: installs / updates the tools described above: staticcheck, shadow,
  unparam, govulncheck.

Therefore, the easiest way to build your own version of the Zettelstore
software is to execute the command

```
go run tools/build.go build
```

In case of errors, please send the output of the verbose execution:

```
go run tools/build.go -v build
```













## A note on the use of Fossil
Zettelstore is managed by the Fossil version control system.
Fossil is an alternative to the ubiquitous Git version control system.
However, Go seems to prefer Git and popular platforms that just support Git.

Some dependencies of Zettelstore, namely [Zettelstore
client](https://zettelstore.de/client) and [sx](https://zettelstore.de/sx), are

Changes to www/changes.wiki.

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<title>Change Log</title>

<a id="0_18"></a>
<h2>Changes for Version 0.18.0 (pending)</h2>

<a id="0_17"></a>
<h2>Changes for Version 0.17.0 (2024-03-04)</h2>
  *  Context search operates only on explicit references. Add the directive
     <code>FULL</code> to follow zettel tags additionally.
     (breaking)
  *  Context cost calculation has been changed. Prepare to retrieve different
     result.
     (breaking)
  *  Remove metadata type WordSet. It was never implemented completely, and
     nobody complained about this.
     (breaking)
  *  Remove logging level &ldquo;sense&rdquo;, &ldquo;warn&rdquo;,
     &ldquo;fatal&rdquo;, and &ldquo;panic&rdquo;.
     (breaking)
  *  Add query action <code>REDIRECT</code> which redirects to zettel that is
     the first in the query result list.
     (minor: api, webui)
  *  Add link to <code>CONTEXT FULL</code> in the zettel info page.
     (minor: webui)
  *  When generating HTML code to query set based metadata (esp. tags), also
     generate a query that matches all values.
     (minor: webui)
  *  Show all metadata with key ending &ldquo;-url&rdquo; on zettel view.
     (minor: webui)
  *  Make WebUI form elements a little bit more accessible by using HTML
     <code>search</code> tag and <code>inputmode</code> attribute.
     (minor: webui)
  *  Add UI action for role zettel, similar to tag zettel. Obviously forgotten
     in release 0.16.0, but thanks to the bug fix v0.16.1 detected.
     (minor: webui)
  *  If an action, which is written in uppercase letters, results in an empty
     list, the list of selected zettel is returned instead. This allows some
     backward compatibility if a new action is introduced.
     (minor)
  *  Only when query list is not empty, allow to show data and plain encoding,
     an optionally show the &ldquo;Save As Zettel&rdquo; button.
     (minor: webui)
  *  If query list is greater than three elements, show the number of elements
     at bottom (before other encodings).
     (minor: webui)
  *  Zettel with syntax &ldquo;sxn&rdquo; are pretty-printed during evaluation.
     This allows to retrieve parsed zettel content, which checked for syntax,
     but is not pretty-printed.
     (minor)
  *  Some smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_16"></a>
<h2>Changes for Version 0.16.1 (2023-12-28)</h2>
  *  Fix some Sxn definitions to allow role-based UI customizations.
     (minor: webui)

<h2>Changes for Version 0.16.0 (2023-11-30)</h2>
  *  Sx function <code>define</code> is removed, as announced for version
     0.15.0. Use <code>defvar</code> (to define variables) or
     <code>defun</code> (to define functions) instead. In addition
     <code>defunconst</code> defines a constant function, which ensures a fixed
     binding of its name to its function body (performance optimization).
     (breaking: webui)


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<title>Change Log</title>




<a id="0_17"></a>
<h2>Changes for Version 0.17.0 (pending)</h2>













































<a id="0_16"></a>




<h2>Changes for Version 0.16.0 (2023-11-30)</h2>
  *  Sx function <code>define</code> is removed, as announced for version
     0.15.0. Use <code>defvar</code> (to define variables) or
     <code>defun</code> (to define functions) instead. In addition
     <code>defunconst</code> defines a constant function, which ensures a fixed
     binding of its name to its function body (performance optimization).
     (breaking: webui)
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     timestamps, e.g. for YYYY or YYYYMM.
     (minor)
  *  SHTML encoder fixed w.r.t inline quoting. Previously, an &lt;q&gt; tag was
     used, which is inappropriate. Restored smart quotes from version 0.3, but
     with new SxHTML infrastructure. This affect the html encoder and the WebUI
     too. Now, an empty quote should not result in a warning by HTML linters.
     (minor: api, webui)
  *  Add new zettelmarkup inline formatting: <code>##Text##</code> will mark /
     highlight the given Text. It is typically used to highlight some text,
     which is important for you, but not for the original author. When rendered
     as HTML, the &lt;mark&gt; tag is used.
     (minor: zettelmarkup)
  *  Add configuration keys to show, not to show, or show the closed list of
     referencing zettel in the web user interface. You can set these
     configurations system-wide, per user, or per zettel. Often it is used to
     ensure a &ldquo;clean&rdquo; home zettel. Affects the list of incoming
     / back links, folge zettel, subordinate zettel, and successor zettel.
     (minor: webui)
  *  Some smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_15"></a>
<h2>Changes for Version 0.15.0 (2023-10-26)</h2>
  *  Sx function <code>define</code> is now deprecated. It will be removed in
     version 0.16. Use <code>defvar</code> or <code>defun</code> instead.
     Otherwise the WebUI will not work in version 0.16.
     (major: webui, deprecated)
  *  Zettel can be re-indexed via WebUI or API query action
     <code>REINDEX</code>. The info page of a zettel contains a link to
     re-index the zettel. In a query transclusion, this action is ignored.
     (major: api, webui).
  *  Allow to determine a tag zettel for a given tag.
     (major: api, webui)
  *  Present user the option to create a (missing) tag zettel (in list view).
     Results in a new predefined zettel with identifier 00000000090003, which
     is a template for new tag zettel.
     (minor: webui)
  *  ZIP file with manual now contains a zettel 00001000000000 that contains
     its build date (metadata key <code>created</code>) and version (in the
     zettel content)
     (minor)
  *  If an error page cannot be created due to template errors (or similar), a
     plain text error page is delivered instead. It shows the original error
     and the error that occured durng rendering the original error page.
     (minor: webui)
  *  Some smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_14"></a>
<h2>Changes for Version 0.14.0 (2023-09-22)</h2>
  *  Remove support for JSON. This was marked deprecated in version 0.12.0. Use
     the <code>data</code> encoding instead, a form of symbolic expressions.
     (breaking: api; minor: webui)
  *  Remove deprecated syntax for a context list: <code>CONTEXT zid</code>. Use
     <code>zid CONTEXT</code> instead. It was deprecated in version 0.13.0.
     (breaking: api, webui, zettelmarkup)
  *  Replace CSS-role-map mechanism with a more general Sx-based one: user
     specific code may generates parts of resulting HTML document.
     (breaking: webui)
  *  Allow meta-tags, i.e. zettel for a specific tag. Meta-tags have the tag
     name as a title and specify the role "tag".
     (major: webui)
  *  Allow to load sx code from multiple zettel; dependencies are specified
     using <code>precursor</code> metadata.
     (major: webui)
  *  Allow sx code to change WebUI for zettel with specified role.
     (major: webui)
  *  Some minor usability improvements.
     (minor: webui)
  *  Some smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_13"></a>
<h2>Changes for Version 0.13.0 (2023-08-07)</h2>
  *  There are for new search operators: less, not less, greater, not greater.
     These use the same syntax as the operators prefix, not prefix, suffix, not
     suffix. The latter are now denoted as <code>[</code>, <code>![</code>,
     <code>]</code>, and <code>!]</code>. The first may operate numerically for
     metadata like numbers, timestamps, and zettel identifier. They are not
     supported for full-text search.
     (breaking: api, webui)
  *  The API endpoint <code>/o/{ID}</code> (order of zettel ID) is no longer
     available. Please use the query expression <code>{ID} ITEMS</code>
     instead.
     (breaking: api)
  *  The API endpoint <code>/u/{ID}</code> (unlinked references of zettel ID)
     is no longer available. Please use the query expression <code>{ID}
     UNLINKED</code> instead.
     (breaking: api)
  *  All API endpoints allow to encode zettel data with the <code>data</code>
     encodings, incl. creating, updating, retrieving, and querying zettel.
     (major: api)
  *  Change syntax for context query to <code>zid ... CONTEXT</code>. This will
     allow to add more directives that operate on zettel identifier. Old syntax
     <code>CONTEXT zid</code> will be removed in 0.14.
     (major, deprecated)
  *  Add query directive <code>ITEMS</code> that will produce a list of
     metadata of all zettel that are referenced by the originating zettel in
     a top-level list. It replaces the API endpoint <code>/o/{ID}</code> (and
     makes it more useful).
     (major: api, webui)
  *  Add query directive <code>UNLINKED</code> that will produce a list of
     metadata of all zettel that are mentioning the originating zettel in
     a top-level, but do not mention them. It replaces the API endpoint
     <code>/u/{ID}</code> (and makes it more useful).
     (major: api, webui)
  *  Add query directive <code>IDENT</code> to distinguish a search for
     a zettel identifier (&ldquo;{ID}&rdquo;), that will list all metadata of
     zettel containing that zettel identifier, and a request to just list the
     metadata of given zettel (&ldquo;{ID} IDENT&rdquo;). The latter could be
     filtered further.
     (minor: api, webui)
  *  Add support for metadata key <code>folge-role</code>.
     (minor)
  *  Allow to create a child from a given zettel.
     (minor: webui)
  *  Make zettel entry/edit form a little friendlier: auto-prepend missing '#'
     to tags; ensure that role and syntax receive just a word.
     (minor: webui)
  *  Use a zettel that defines builtins for evaluating WebUI templates.
     (minor: webui)
  *  Add links to retrieve result of a query in other formats.
     (minor: webui)
  *  Always log the found configuration file.
     (minor: server)
  *  The use of the <code>json</code> zettel encoding is deprecated (since
     version 0.12.0). Support for this encoding will be removed in version
     0.14.0. Please use the new <code>data</code> encoding instead.
     (deprecated: api)
  *  Some smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_12"></a>
<h2>Changes for Version 0.12.0 (2023-06-05)</h2>
  *  Syntax of templates for the web user interface are changed from Mustache







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     (minor)
  *  SHTML encoder fixed w.r.t inline quoting. Previously, an &lt;q&gt; tag was
     used, which is inappropriate. Restored smart quotes from version 0.3, but
     with new SxHTML infrastructure. This affect the html encoder and the WebUI
     too. Now, an empty quote should not result in a warning by HTML linters.
     (minor: api, webui)
  *  Add new zettelmarkup inline formatting: <tt>##Text##</tt> will mark /
     highlight the given Text. It is typically used to highlight some text,
     which is important for you, but not for the original author. When rendered
     as HTML, the &lt;mark&gt; tag is used.
     (minor: zettelmarkup)
  *  Add configuration keys to show, not to show, or show the closed list of
     referencing zettel in the web user interface. You can set these
     configurations system-wide, per user, or per zettel. Often it is used to
     ensure a &ldquo;clean&rdquo; home zettel. Affects the list of incoming
     / back links, folge zettel, subordinate zettel, and successor zettel.
     (minor: webui)
  *  Some smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_15"></a>
<h2>Changes for Version 0.15.0 (2023-10-26)</h2>
  *  Sx function <tt>define</tt> is now deprecated. It will be removed in
     version 0.16. Use <tt>defvar</tt> or <tt>defun</tt> instead. Otherwise
     the WebUI will not work in version 0.16.
     (major: webui, deprecated)
  *  Zettel can be re-indexed via WebUI or API query action <tt>REINDEX</tt>.
     The info page of a zettel contains a link to re-index the zettel. In
     a query transclusion, this action is ignored.
     (major: api, webui).
  *  Allow to determine a tag zettel for a given tag.
     (major: api, webui)
  *  Present user the option to create a (missing) tag zettel (in list view).
     Results in a new predefined zettel with identifier 00000000090003, which
     is a template for new tag zettel.
     (minor: webui)
  *  ZIP file with manual now contains a zettel 00001000000000 that contains
     its build date (metadata key <tt>created</tt>) and version (in the zettel
     content)
     (minor)
  *  If an error page cannot be created due to template errors (or similar), a
     plain text error page is delivered instead. It shows the original error
     and the error that occured durng rendering the original error page.
     (minor: webui)
  *  Some smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_14"></a>
<h2>Changes for Version 0.14.0 (2023-09-22)</h2>
  *  Remove support for JSON. This was marked deprecated in version 0.12.0. Use
     the <tt>data</tt> encoding instead, a form of symbolic expressions.
     (breaking: api; minor: webui)
  *  Remove deprecated syntax for a context list: <tt>CONTEXT zid</tt>. Use
     <tt>zid CONTEXT</tt> instead. It was deprecated in version 0.13.0.
     (breaking: api, webui, zettelmarkup)
  *  Replace CSS-role-map mechanism with a more general Sx-based one: user
     specific code may generates parts of resulting HTML document.
     (breaking: webui)
  *  Allow meta-tags, i.e. zettel for a specific tag. Meta-tags have the tag
     name as a title and specify the role "tag".
     (major: webui)
  *  Allow to load sx code from multiple zettel; dependencies are specified
     using <tt>precursor</tt> metadata.
     (major: webui)
  *  Allow sx code to change WebUI for zettel with specified role.
     (major: webui)
  *  Some minor usability improvements.
     (minor: webui)
  *  Some smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_13"></a>
<h2>Changes for Version 0.13.0 (2023-08-07)</h2>
  *  There are for new search operators: less, not less, greater, not greater.
     These use the same syntax as the operators prefix, not prefix, suffix, not
     suffix. The latter are now denoted as <tt>[</tt>, <tt>![</tt>, <tt>]</tt>,
     and <tt>!]</tt>. The first may operate numerically for metadata like
     numbers, timestamps, and zettel identifier. They are not supported for
     full-test search.
     (breaking: api, webui)
  *  The API endpoint <tt>/o/{ID}</tt> (order of zettel ID) is no longer
     available. Please use the query expression <tt>{ID} ITEMS</tt> instead.

     (breaking: api)
  *  The API endpoint <tt>/u/{ID}</tt> (unlinked references of zettel ID) is no
     longer available. Please use the query expression <tt>{ID} UNLINKED</tt>
     instead.
     (breaking: api)
  *  All API endpoints allow to encode zettel data with the <tt>data</tt>
     encodings, incl. creating, updating, retrieving, and querying zettel.
     (major: api)
  *  Change syntax for context query to <tt>zid ... CONTEXT</tt>. This will
     allow to add more directives that operate on zettel identifier. Old syntax
     <tt>CONTEXT zid</tt> will be removed in 0.14.
     (major, deprecated)
  *  Add query directive <tt>ITEMS</tt> that will produce a list of metadata
     of all zettel that are referenced by the originating zettel in a top-level
     list. It replaces the API endpoint <tt>/o/{ID}</tt> (and makes it more
     useful).
     (major: api, webui)
  *  Add query directive <tt>UNLINKED</tt> that will produce a list of metadata
     of all zettel that are mentioning the originating zettel in a top-level,
     but do not mention them. It replaces the API endpoint <tt>/u/{ID}</tt>
     (and makes it more useful).
     (major: api, webui)
  *  Add query directive <tt>IDENT</tt> to distinguish a search for a zettel
     identifier (&ldquo;{ID}&rdquo;), that will list all metadata of zettel
     containing that zettel identifier, and a request to just list the metadata
     of given zettel (&ldquo;{ID} IDENT&rdquo;). The latter could be filtered
     further.
     (minor: api, webui)
  *  Add support for metadata key <tt>folge-role</tt>.
     (minor)
  *  Allow to create a child from a given zettel.
     (minor: webui)
  *  Make zettel entry/edit form a little friendlier: auto-prepend missing '#'
     to tags; ensure that role and syntax receive just a word.
     (minor: webui)
  *  Use a zettel that defines builtins for evaluating WebUI templates.
     (minor: webui)
  *  Add links to retrieve result of a query in other formats.
     (minor: webui)
  *  Always log the found configuration file.
     (minor: server)
  *  The use of the <tt>json</tt> zettel encoding is deprecated (since version
     0.12.0). Support for this encoding will be removed in version 0.14.0.
     Please use the new <tt>data</tt> encoding instead.
     (deprecated: api)
  *  Some smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_12"></a>
<h2>Changes for Version 0.12.0 (2023-06-05)</h2>
  *  Syntax of templates for the web user interface are changed from Mustache
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     that is the short form for "symbolic expression for HTML".
     (breaking)
  *  Render footer zettel on all WebUI pages.
     (fix: webui)
  *  Query search operator "=" now compares for equality, ":" compares
     depending on the value type.
     (minor: api, webui)
  *  Search term <code>PICK</code> now respects the original sort order. This
     makes it more useful and orthogonal to <code>RANDOM</code> and
     <code>LIMIT</code>. As a side effect, zettel lists retrieved via the API
     are no longer sorted. In case you want a specific order, you must specify
     it explicit.
     (minor: api, webui)
  *  New metadata key <code>expire</code> records a timestamp when a zettel
     should be treated as, well, expired.
     (minor)
  *  New metadata keys <code>superior</code> and <code>subordinate</code>
     (calculated from <code>superior</code>) allow to specify a hierarchy
     between zettel.
     (minor)
  *  Metadata keys with suffix <code>-date</code> and <code>-time</code> are
     treated as
     timestamp values.
     (minor)
  *  <code>sexpr</code> zettel encoding is now documented in the manual.
     (minor: manual)
  *  Build tool allows to install / update external Go tools needed to build
     the software.
     (minor)
  *  Show only useful metadata on WebUI, not the internal metadata.
     (minor: webui)
  *  The use of the <code>json</code> zettel encoding is deprecated. Support
     for this encoding may be removed in future versions. Please use the new
     <code>data</code> encoding instead.
     (deprecated: api)
  *  Some smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_11"></a>
<h2>Changes for Version 0.11.2 (2023-04-16)</h2>
  *  Render footer zettel on all WebUI pages. Backported from 0.12.0. Many

     thanks to HK for reporting it!
     (fix: webui)

<h2>Changes for Version 0.11.1 (2023-03-28)</h2>
  *  Make <code>PICK</code> search term a little bit more deterministic so that
     the &ldquo;Save As Zettel&rdquo; button produces the same list.
     (fix: webui)

<h2>Changes for Version 0.11.0 (2023-03-27)</h2>
  *  Remove ZJSON encoding. It was announced in version 0.10.0. Use Sexpr
     encoding instead.
     (breaking)
  *  Title of a zettel is no longer interpreted as Zettelmarkup text. Now it is
     just a plain string, possibly empty. Therefore, no inline formatting (like
     bold text), no links, no footnotes, no citations (the latter made
     rendering the title often questionable, in some contexts). If you used
     special entities, please use the unicode characters directly. However, as
     a good practice, it is often the best to printable ASCII characters.
     (breaking)
  *  Remove runtime configuration <code>marker-external</code>. It was added in
     version [#0_0_6|0.0.6] and updated in [#0_0_10|0.0.10]. If you want to
     change the marker for an external URL, you could modify zettel
     00000000020001 (Zettelstore Base CSS) or zettel 00000000025001
     (Zettelstore User CSS, preferred) by changing / adding a rule to add some
     content after an external <code><a ...></code> tag.
     (breaking: webui)
  *  Add SHTML encoding. This allows to ensure the quality of generated HTML
     code. In addition, clients might use it, because it is easier to parse and
     manipulate than ordinary HTML. In the future, HTML template zettel will
     probably also use SHTML, deprecating the current Mustache syntax (which
     was added in [#0_0_9|0.0.9]).
     (major)
  *  Search term <code>PICK n</code>, where <code>n</code> is an integer value
     greater zero, will pick randomly <code>n</code> elements from the search
     result list. Somehow similar (and faster) as <code>RANDOM LIMIT n</code>,
     but allows also later ordering of the resulting list.
     (minor)
  *  Changed cost model for zettel context: a zettel with more
     outgoing/incoming references has higher cost than a zettel with less
     references. Also added support for traversing tags, with a similar cost
     model. As an effect, zettel hubs (in many cases your home zettel) will
     less likely add its references. Same for often used tags. The cost model
     might change in some details in the future, but the idea of a penalty
     applied to zettel / tags with many references will hold.
     (minor)
  *  Some smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_10"></a>
<h2>Changes for Version 0.10.1 (2023-01-30)</h2>
  *  Show button to save a query into a zettel only when the current user has
     authorization to do it.
     (fix: webui)

<h2>Changes for Version 0.10.0 (2023-01-24)</h2>
  *  Remove support for endpoints <code>/j, /m, /q, /p, /v</code>. Their
     functions are merged into endpoint <code>/z</code>. This was announced in
     version 0.9.0. Please use only client library with at least version 0.10.0
     too.
     (breaking: api)
  *  Remove support for runtime configuration key <code>footer-html</code>. Use
     <code>footer-zettel</code> instead. Deprecated in version 0.9.0.
     (breaking: webui)
  *  Save a query into a zettel to freeze it.
     (major: webui)
  *  Allow to show all used metadata keys, linked with their occurrences and
     their values.
     (minor: webui)
  *  Mark ZJSON encoding as deprecated for v0.11.0. Please use Sexpr encoding
     instead.
     (deprecated)
  *  Some smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_9"></a>
<h2>Changes for Version 0.9.0 (2022-12-12)</h2>
  *  Remove support syntax <code>pikchr</code>. Although it was a nice idea to
     include it into Zettelstore, the implementation is too brittle (w.r.t. the
     expected long lifetime of Zettelstore). There should be other ways to
     support SVG front-ends.
     (breaking)
  *  Allow to upload content when creating / updating a zettel.
     (major: webui)
  *  Add syntax &ldquo;draw&rdquo; (again)
     (minor: zettelmarkup)
  *  Allow to encode zettel in Markdown. Please note: not every aspect of
     a zettel can be encoded in Markdown. Those aspects will be ignored.
     (minor: api)
  *  Enhance zettel context by raising the importance of folge zettel (and
     similar).
     (minor: api, webui)
  *  Interpret zettel files with extension <code>.webp</code> as an binary
     image file format.
     (minor)
  *  Allow to specify service specific log level via statup configuration and
     via command line.
     (minor)
  *  Allow to specify a zettel to serve footer content via runtime
     comfiguration <code>footer-zettel</code>. Can be overwritten by user
     zettel.
     (minor: webui)
  *  Footer data is automatically separated by a thematic break / horizontal
     rule. If you do not like it, you have to update the base template.
     (minor: webui)
  *  Allow to set runtime configuration <code>home-zettel</code> in the user
     zettel to make it user-specific.
     (minor: webui)
  *  Serve favicon.ico from the asset directory.
     (minor: webui)
  *  Zettelmarkup cheat sheet
     (minor: manual)
  *  Runtime configuration key <code>footer-html</code> will be removed in
     Version 0.10.0. Please use <code>footer-zettel</code> instead.
     (deprecated: webui)
  *  In the next version 0.10.0, the API endpoints for a zettel
     (<code>/j</code>, <code>/p</code>, <code>/v</code>) will be merged with
     endpoint <code>/z</code>. Basically, the previous endpoint will be
     refactored as query parameter of endpoint <code>/z</code>. To reduce
     errors, there will be no version, where the previous endpoint are still
     available and the new funnctionality is still there. This is a warning to
     prepare for some breaking changes in v0.10.0. This also affects the API
     client implementation.
     (warning: api)
  *  Some smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_8"></a>
<h2>Changes for Version 0.8.0 (2022-10-20)</h2>
  *  Remove support for tags within zettel content. Removes also property
     metadata keys <code>all-tags</code> and <code>computed-tags</code>.
     Deprecated in version 0.7.0.
     (breaking: zettelmarkup, api, webui)
  *  Remove API endpoint <code>/m</code>, which retrieve aggregated (tags,
     roles) zettel identifier. Deprecated in version 0.7.0.
     (breaking: api)
  *  Remove support for URL query parameter starting with an underscore.
     Deprecated in version 0.7.0.
     (breaking: api, webui)
  *  Ignore HTML content by default, and allow HTML gradually by setting
     startup value <code>insecure-html</code>.
     (breaking: markup)
  *  Endpoint <code>/q</code> returns list of full metadata, if no query action
     is specified. A HTTP call <code>GET /z</code> (retrieving metadata of all
     or some zettel) is now an alias for <code>GET /q</code>.
     (major: api)
  *  Allow to create a zettel that acts as the new version of an existing
     zettel. Useful if you want to have access to older, outdated content.
     (minor: webui)
  *  Allow transclusion to reference local image via URL.
     (minor: zettelmarkup, webui)
  *  Add categories in RSS feed, based on zettel tags.







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     that is the short form for "symbolic expression for HTML".
     (breaking)
  *  Render footer zettel on all WebUI pages.
     (fix: webui)
  *  Query search operator "=" now compares for equality, ":" compares
     depending on the value type.
     (minor: api, webui)
  *  Search term <tt>PICK</tt> now respects the original sort order. This makes
     it more useful and orthogonal to <tt>RANDOM</tt> and <tt>LIMIT</tt>. As
     a side effect, zettel lists retrieved via the API are no longer sorted. In
     case you want a specific order, you must specify it explicit.

     (minor: api, webui)
  *  New metadata key <tt>expire</tt> records a timestamp when a zettel should
     be treated as, well, expired.
     (minor)
  *  New metadata keys <tt>superior</tt> and <tt>subordinate</tt> (calculated
     from <tt>superior</tt>) allow to specify a hierarchy between zettel.

     (minor)
  *  Metadata keys with suffix <tt>-date</tt> and <tt>-time</tt> are treated as

     timestamp values.
     (minor)
  *  <tt>sexpr</tt> zettel encoding is now documented in the manual.
     (minor: manual)
  *  Build tool allows to install / update external Go tools needed to build
     the software.
     (minor)
  *  Show only useful metadata on WebUI, not the internal metadata.
     (minor: webui)
  *  The use of the <tt>json</tt> zettel encoding is deprecated. Support for
     this encoding may be removed in future versions. Please use the new
     <tt>data</tt> encoding instead.
     (deprecated: api)
  *  Some smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_11"></a>
<h2>Changes for Version 0.11.2 (2023-04-16)</h2>
  *  Render footer zettel on all WebUI pages.
     Backported from 0.12.0.
     Many thanks to HK for reporting it!
     (fix: webui)

<h2>Changes for Version 0.11.1 (2023-03-28)</h2>
  *  Make <tt>PICK</tt> search term a little bit more deterministic so that the
     &ldquo;Save As Zettel&rdquo; button produces the same list.
     (fix: webui)

<h2>Changes for Version 0.11.0 (2023-03-27)</h2>
  *  Remove ZJSON encoding. It was announced in version 0.10.0. Use Sexpr
     encoding instead.
     (breaking)
  *  Title of a zettel is no longer interpreted as Zettelmarkup text. Now it is
     just a plain string, possibly empty. Therefore, no inline formatting (like
     bold text), no links, no footnotes, no citations (the latter made
     rendering the title often questionable, in some contexts). If you used
     special entities, please use the unicode characters directly. However, as
     a good practice, it is often the best to printable ASCII characters.
     (breaking)
  *  Remove runtime configuration <tt>marker-external</tt>. It was added in
     version [#0_0_6|0.0.6] and updated in [#0_0_10|0.0.10]. If you want to
     change the marker for an external URL, you could modify zettel
     00000000020001 (Zettelstore Base CSS) or zettel 00000000025001
     (Zettelstore User CSS, preferred) by changing / adding a rule to add some
     content after an external <tt><a ...></tt> tag.
     (breaking: webui)
  *  Add SHTML encoding. This allows to ensure the quality of generated HTML
     code. In addition, clients might use it, because it is easier to parse and
     manipulate than ordinary HTML. In the future, HTML template zettel will
     probably also use SHTML, deprecating the current Mustache syntax (which
     was added in [#0_0_9|0.0.9]).
     (major)
  *  Search term <tt>PICK n</tt>, where <tt>n</tt> is an integer value greater
     zero, will pick randomly <tt>n</tt> elements from the search result list.
     Somehow similar (and faster) as <tt>RANDOM LIMIT n</tt>, but allows also
     later ordering of the resulting list.
     (minor)
  *  Changed cost model for zettel context: a zettel with more
     outgoing/incoming references has higher cost than a zettel with less
     references. Also added support for traversing tags, with a similar cost
     model. As an effect, zettel hubs (in many cases your home zettel) will
     less likely add its references. Same for often used tags. The cost model
     might change in some details in the future, but the idea of a penalty
     applied to zettel / tags with many references will hold.
     (minor)
  *  Some smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_10"></a>
<h2>Changes for Version 0.10.1 (2023-01-30)</h2>
  *  Show button to save a query into a zettel only when the current user has
     authorization to do it.
     (fix: webui)

<h2>Changes for Version 0.10.0 (2023-01-24)</h2>
  *  Remove support for endpoints <tt>/j, /m, /q, /p, /v</tt>. Their functions
     are merged into endpoint <tt>/z</tt>. This was announced in version 0.9.0.
     Please use only client library with at least version 0.10.0 too.

     (breaking: api)
  *  Remove support for runtime configuration key <tt>footer-html</tt>. Use
     <tt>footer-zettel</tt> instead. Deprecated in version 0.9.0.
     (breaking: webui)
  *  Save a query into a zettel to freeze it.
     (major: webui)
  *  Allow to show all used metadata keys, linked with their occurrences and
     their values.
     (minor: webui)
  *  Mark ZJSON encoding as deprecated for v0.11.0. Please use Sexpr encoding
     instead.
     (deprecated)
  *  Some smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_9"></a>
<h2>Changes for Version 0.9.0 (2022-12-12)</h2>
  *  Remove support syntax <tt>pikchr</tt>. Although it was a nice idea to
     include it into Zettelstore, the implementation is too brittle (w.r.t. the
     expected long lifetime of Zettelstore). There should be other ways to
     support SVG front-ends.
     (breaking)
  *  Allow to upload content when creating / updating a zettel.
     (major: webui)
  *  Add syntax &ldquo;draw&rdquo; (again)
     (minor: zettelmarkup)
  *  Allow to encode zettel in Markdown. Please note: not every aspect of
     a zettel can be encoded in Markdown. Those aspects will be ignored.
     (minor: api)
  *  Enhance zettel context by raising the importance of folge zettel (and
     similar).
     (minor: api, webui)
  *  Interpret zettel files with extension <tt>.webp</tt> as an binary image
     file format.
     (minor)
  *  Allow to specify service specific log level via statup configuration and
     via command line.
     (minor)
  *  Allow to specify a zettel to serve footer content via runtime
     comfiguration <tt>footer-zettel</tt>. Can be overwritten by user zettel.

     (minor: webui)
  *  Footer data is automatically separated by a thematic break / horizontal
     rule. If you do not like it, you have to update the base template.
     (minor: webui)
  *  Allow to set runtime configuration <tt>home-zettel</tt> in the user zettel
     to make it user-specific.
     (minor: webui)
  *  Serve favicon.ico from the asset directory.
     (minor: webui)
  *  Zettelmarkup cheat sheet
     (minor: manual)
  *  Runtime configuration key <tt>footer-html</tt> will be removed in Version
     0.10.0. Please use <tt>footer-zettel</tt> instead.
     (deprecated: webui)
  *  In the next version 0.10.0, the API endpoints for a zettel (<tt>/j</tt>,
     <tt>/p</tt>, <tt>/v</tt>) will be merged with endpoint <tt>/z</tt>. Basically,

     the previous endpoint will be refactored as query parameter of endpoint
     <tt>/z</tt>. To reduce errors, there will be no version, where the previous
     endpoint are still available and the new funnctionality is still there.
     This is a warning to prepare for some breaking changes in v0.10.0. This
     also affects the API client implementation.
     (warning: api)
  *  Some smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_8"></a>
<h2>Changes for Version 0.8.0 (2022-10-20)</h2>
  *  Remove support for tags within zettel content. Removes also property
     metadata keys <tt>all-tags</tt> and <tt>computed-tags</tt>. Deprecated in
     version 0.7.0.
     (breaking: zettelmarkup, api, webui)
  *  Remove API endpoint <tt>/m</tt>, which retrieve aggregated (tags, roles)
     zettel identifier. Deprecated in version 0.7.0.
     (breaking: api)
  *  Remove support for URL query parameter starting with an underscore.
     Deprecated in version 0.7.0.
     (breaking: api, webui)
  *  Ignore HTML content by default, and allow HTML gradually by setting
     startup value <tt>insecure-html</tt>.
     (breaking: markup)
  *  Endpoint <tt>/q</tt> returns list of full metadata, if no query action is
     specified. A HTTP call <tt>GET /z</tt> (retrieving metadata of all or some
     zettel) is now an alias for <tt>GET /q</tt>.
     (major: api)
  *  Allow to create a zettel that acts as the new version of an existing
     zettel. Useful if you want to have access to older, outdated content.
     (minor: webui)
  *  Allow transclusion to reference local image via URL.
     (minor: zettelmarkup, webui)
  *  Add categories in RSS feed, based on zettel tags.
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<a id="0_7"></a>
<h2>Changes for Version 0.7.1 (2022-09-18)</h2>
  *  Produce a RSS feed compatible to Miniflux.
     (minor)
  *  Make sure to always produce a pubdata in RSS feed.
     (bug)
  *  Prefix search for data that looks like a zettel identifier may end with a
     <code>0</code>.
     (bug)
  *  Fix glitch on manual zettel.
     (bug)

<h2>Changes for Version 0.7.0 (2022-09-17)</h2>
  *  Removes support for URL query parameter to search for metadata values,
     sorting, offset, and limit a zettel list. Deprecated in version 0.6.0
     (breaking: api, webui)
  *  Allow to search for the existence / non-existence of a metadata key with
     the "?" operator: <code>key?</code> and <code>key!?</code>. Previously,
     the ":" operator was used for this by specifying an empty search value.
     Now you can use the ":" operator to find empty / non-empty metadata
     values. If you specify a search operator for metadata, the specified key
     is assumed to exist.
     (breaking: api, webui)
  *  Rename &ldquo;search expression&rdquo; into &ldquo;query
     expressions&rdquo;. Similar, the reference prefix <code>search:</code> to
     specify a query link or a query transclusion is renamed to
     <code>query:</code>
     (breaking: zettelmarkup)
  *  Rename query parameter for query expression from <code>_s</code> to
     <code>q</code>.
     (breaking: api, webui)
  *  Cleanup names for HTTP query parameters in WebUI. Update your bookmarks
     if you used them. (For API: see below)
     (breaking: webui)
  *  Allow search terms to be OR-ed. This allows to specify any search
     expression in disjunctive normal form. Therefore, the NEGATE term is not
     needed any more.
     (breaking: api, webui)
  *  Replace runtime configuration <code>default-lang</code> with
     <code>lang</code>. Additionally, <code>lang</code> set at the zettel of
     the current user, will provide a default value for the current user,
     overwriting the global default value.
     (breaking)
  *  Add new syntax <code>pikchr</code>, a markup language for diagrams in
     technical documentation.
     (major)
  *  Add endpoint <code>/q</code> to query the zettelstore and aggregate
     resulting values. This is done by extending the query syntax.
     (major: api)
  *  Add support for query actions. Actions may aggregate w.r.t. some metadata
     keys, or produce an RSS feed.
     (major: api, webui)
  *  Query results can be ordered for more than one metadata key. Ordering by
     zettel identifier is an implicit last order expression to produce stable
     results.
     (minor: api, webui)
  *  Add support for an asset directory, accessible via URL prefix
     <code>/assests/</code>.
     (minor: server)
  *  Add support for metadata key <code>created</code>, a timestamp when the
     zettel was created. Since key <code>published</code> is now either
     <code>created</code> or <code>modified</code>, it will now always contains
     a valid time stamp.
     (minor)
  *  Add support for metadata key <code>author</code>. It will be displayed on
     a zettel, if set.
     (minor: webui)
  *  Remove CSS for lists. The browsers default value for
     <code>padding-left</code> will be used.
     (minor: webui)
  *  Removed templates for rendering roles and tags lists. This is now done by
     query actions.
     (minor: webui)
  *  Tags within zettel content are deprecated in version 0.8. This affects the
     computed metadata keys <code>content-tags</code> and
     <code>all-tags</code>. They will be removed. The number sign of a content
     tag introduces unintended tags, esp. in the english language; content tags
     may occur within links &rarr; links within links, when rendered as HTML;
     content tags may occur in the title of a zettel; naming of content tags,
     zettel tags, and their union is confusing for many. Migration: use zettel
     tags or replace content tag with a search.
     (deprecated: zettelmarkup)
  *  Cleanup names for HTTP query parameter for API calls. Essentially,
     underscore characters in front are removed. Please use new names, old
     names will be deprecated in version 0.8.
     (deprecated: api)
  *  Some smaller bug fixes and improvements, to the software and to the
     documentation.







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<a id="0_7"></a>
<h2>Changes for Version 0.7.1 (2022-09-18)</h2>
  *  Produce a RSS feed compatible to Miniflux.
     (minor)
  *  Make sure to always produce a pubdata in RSS feed.
     (bug)
  *  Prefix search for data that looks like a zettel identifier may end with a
     <tt>0</tt>.
     (bug)
  *  Fix glitch on manual zettel.
     (bug)

<h2>Changes for Version 0.7.0 (2022-09-17)</h2>
  *  Removes support for URL query parameter to search for metadata values,
     sorting, offset, and limit a zettel list. Deprecated in version 0.6.0
     (breaking: api, webui)
  *  Allow to search for the existence / non-existence of a metadata key with
     the "?" operator: <tt>key?</tt> and <tt>key!?</tt>. Previously, the ":"
     operator was used for this by specifying an empty search value. Now you
     can use the ":" operator to find empty / non-empty metadata values. If you
     specify a search operator for metadata, the specified key is assumed to
     exist.
     (breaking: api, webui)
  *  Rename &ldquo;search expression&rdquo; into &ldquo;query
     expressions&rdquo;. Similar, the reference prefix <tt>search:</tt> to
     specify a query link or a query transclusion is renamed to <tt>query:</tt>

     (breaking: zettelmarkup)
  *  Rename query parameter for query expression from <tt>_s</tt> to
     <tt>q</tt>.
     (breaking: api, webui)
  *  Cleanup names for HTTP query parameters in WebUI. Update your bookmarks
     if you used them. (For API: see below)
     (breaking: webui)
  *  Allow search terms to be OR-ed. This allows to specify any search
     expression in disjunctive normal form. Therefore, the NEGATE term is not
     needed any more.
     (breaking: api, webui)
  *  Replace runtime configuration <tt>default-lang</tt> with <tt>lang</tt>.
     Additionally, <tt>lang</tt> set at the zettel of the current user, will
     provide a default value for the current user, overwriting the global
     default value.
     (breaking)
  *  Add new syntax <tt>pikchr</tt>, a markup language for diagrams in
     technical documentation.
     (major)
  *  Add endpoint <tt>/q</tt> to query the zettelstore and aggregate resulting
     values. This is done by extending the query syntax.
     (major: api)
  *  Add support for query actions. Actions may aggregate w.r.t. some metadata
     keys, or produce an RSS feed.
     (major: api, webui)
  *  Query results can be ordered for more than one metadata key. Ordering by
     zettel identifier is an implicit last order expression to produce stable
     results.
     (minor: api, webui)
  *  Add support for an asset directory, accessible via URL prefix
     <tt>/assests/</tt>.
     (minor: server)
  *  Add support for metadata key <tt>created</tt>, a timestamp when the zettel
     was created. Since key <tt>published</tt> is now either <tt>created</tt>

     or <tt>modified</tt>, it will now always contains a valid time stamp.
     (minor)
  *  Add support for metadata key <tt>author</tt>. It will be displayed on a
     zettel, if set.
     (minor: webui)
  *  Remove CSS for lists. The browsers default value for <tt>padding-left</tt>
     will be used.
     (minor: webui)
  *  Removed templates for rendering roles and tags lists. This is now done by
     query actions.
     (minor: webui)
  *  Tags within zettel content are deprecated in version 0.8. This affects the
     computed metadata keys <tt>content-tags</tt> and <tt>all-tags</tt>. They
     will be removed. The number sign of a content tag introduces unintended
     tags, esp. in the english language; content tags may occur within links
     &rarr; links within links, when rendered as HTML; content tags may occur
     in the title of a zettel; naming of content tags, zettel tags, and their
     union is confusing for many. Migration: use zettel tags or replace content
     tag with a search.
     (deprecated: zettelmarkup)
  *  Cleanup names for HTTP query parameter for API calls. Essentially,
     underscore characters in front are removed. Please use new names, old
     names will be deprecated in version 0.8.
     (deprecated: api)
  *  Some smaller bug fixes and improvements, to the software and to the
     documentation.
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  *  If authentication is enabled, a secret of at least 16 bytes must be set in
     the startup configuration.
     (breaking)
  *  &ldquo;Sexpr&rdquo; encoding replaces &ldquo;Native&rdquo; encoding. Sexpr
     encoding is much easier to parse, compared with native and ZJSON encoding.
     In most cases it is smaller than ZJSON.
     (breaking: api)
  *  Endpoint <code>/r</code> is changed to <code>/m?_key=role</code> and
     returns now a map of role names to the list of zettel having this role.
     Endpoint <code>/t</code> is changed to <code>/m?_key=tags</code>. It
     already returned mapping described before.
     (breaking: api)
  *  Remove support for a default value for metadata key title, role, and
     syntax. Title and role are now allowed to be empty, an empty syntax value
     defaults to &ldquo;plain&rdquo;.
     (breaking)
  *  Add support for an &ldquo;evaluation block&rdquo; syntax in Zettelmarkup
     to allow interpretation of content by external software.







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  *  If authentication is enabled, a secret of at least 16 bytes must be set in
     the startup configuration.
     (breaking)
  *  &ldquo;Sexpr&rdquo; encoding replaces &ldquo;Native&rdquo; encoding. Sexpr
     encoding is much easier to parse, compared with native and ZJSON encoding.
     In most cases it is smaller than ZJSON.
     (breaking: api)
  *  Endpoint <tt>/r</tt> is changed to <tt>/m?_key=role</tt> and returns now
     a map of role names to the list of zettel having this role. Endpoint
     <tt>/t</tt> is changed to <tt>/m?_key=tags</tt>. It already returned
     mapping described before.
     (breaking: api)
  *  Remove support for a default value for metadata key title, role, and
     syntax. Title and role are now allowed to be empty, an empty syntax value
     defaults to &ldquo;plain&rdquo;.
     (breaking)
  *  Add support for an &ldquo;evaluation block&rdquo; syntax in Zettelmarkup
     to allow interpretation of content by external software.
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     documentation.

<a id="0_4"></a>
<h2>Changes for Version 0.4 (2022-03-08)</h2>
  *  Encoding &ldquo;djson&rdquo; renamed to &ldquo;zjson&rdquo; (<em>zettel
     json</em>).
     (breaking: api; minor: webui)
  *  Remove inline quotation syntax <code>&lt;&lt;...&lt;&lt;</code>. Now,
     <code>&quot;&quot;...&quot;&quot;</code> generates the equivalent code.
     Typographical quotes are generated by the browser, not by Zettelstore.
     (breaking: Zettelmarkup)
  *  Remove inline formatting for monospace. Its syntax is now used by the
     similar syntax element of literal computer input. Monospace was just
     a visual element with no semantic association. Now, the syntax
     <kbd>++...++</kbd> is obsolete.
     (breaking: Zettelmarkup).







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     documentation.

<a id="0_4"></a>
<h2>Changes for Version 0.4 (2022-03-08)</h2>
  *  Encoding &ldquo;djson&rdquo; renamed to &ldquo;zjson&rdquo; (<em>zettel
     json</em>).
     (breaking: api; minor: webui)
  *  Remove inline quotation syntax <tt>&lt;&lt;...&lt;&lt;</tt>. Now,
     <tt>&quot;&quot;...&quot;&quot;</tt> generates the equivalent code.
     Typographical quotes are generated by the browser, not by Zettelstore.
     (breaking: Zettelmarkup)
  *  Remove inline formatting for monospace. Its syntax is now used by the
     similar syntax element of literal computer input. Monospace was just
     a visual element with no semantic association. Now, the syntax
     <kbd>++...++</kbd> is obsolete.
     (breaking: Zettelmarkup).
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     interpreted as Zettelmarkup. Similar, the suffix <kbd>-set</kbd> denotes
     a set/list of words and the suffix <kbd>-zids</kbd> a set/list of zettel
     identifier.
     (minor: api, webui)
  *  Change generated URLs for zettel-creation forms. If you have bookmarked
     them, e.g. to create a new zettel, you should update.
     (minor: webui)
  *  Remove support for metadata key <code>no-index</code> to suppress indexing
     selected zettel. It was introduced in <a href="#0_0_11">v0.0.11</a>, but
     disallows some future optimizations for searching zettel.
     (minor: api, webui)
  *  Make some metadata-based searches a little bit faster by executing
     a (in-memory-based) full-text search first. Now only those zettel are
     loaded from file that contain the metdata value.
     (minor: api, webui)
  *  Add an API call to retrieve the version of the Zettelstore.
     (minor: api)
  *  Limit the amount of zettel and bytes to be stored in a memory box. Allows
     to use it with public access.
     (minor: box)
  *  Disallow to cache the authentication cookie. Will remove most unexpected
     log-outs when using a mobile device.
     (minor: webui)
  *  Many smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_3"></a>
<h2>Changes for Version 0.3 (2022-02-09)</h2>
  *  Zettel files with extension <code>.meta</code> are now treated as content
     files. Previoulsy, they were interpreted as metadata files. The
     interpretation as metadata files was deprecated in version 0.2.
     (breaking: directory and file/zip box)
  *  Add syntax &ldquo;draw&rdquo; to produce some graphical representations.
     (major)
  *  Add Zettelmarkup syntax to specify full transclusion of other zettel.
     (major: Zettelmarkup)







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     interpreted as Zettelmarkup. Similar, the suffix <kbd>-set</kbd> denotes
     a set/list of words and the suffix <kbd>-zids</kbd> a set/list of zettel
     identifier.
     (minor: api, webui)
  *  Change generated URLs for zettel-creation forms. If you have bookmarked
     them, e.g. to create a new zettel, you should update.
     (minor: webui)
  *  Remove support for metadata key <tt>no-index</tt> to suppress indexing
     selected zettel. It was introduced in <a href="#0_0_11">v0.0.11</a>, but
     disallows some future optimizations for searching zettel.
     (minor: api, webui)
  *  Make some metadata-based searches a little bit faster by executing
     a (in-memory-based) full-text search first. Now only those zettel are
     loaded from file that contain the metdata value.
     (minor: api, webui)
  *  Add an API call to retrieve the version of the Zettelstore.
     (minor: api)
  *  Limit the amount of zettel and bytes to be stored in a memory box. Allows
     to use it with public access.
     (minor: box)
  *  Disallow to cache the authentication cookie. Will remove most unexpected
     log-outs when using a mobile device.
     (minor: webui)
  *  Many smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_3"></a>
<h2>Changes for Version 0.3 (2022-02-09)</h2>
  *  Zettel files with extension <tt>.meta</tt> are now treated as content
     files. Previoulsy, they were interpreted as metadata files. The
     interpretation as metadata files was deprecated in version 0.2.
     (breaking: directory and file/zip box)
  *  Add syntax &ldquo;draw&rdquo; to produce some graphical representations.
     (major)
  *  Add Zettelmarkup syntax to specify full transclusion of other zettel.
     (major: Zettelmarkup)
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     (minor: directory and file/zip box)
  *  Many smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_2"></a>
<h2>Changes for Version 0.2 (2022-01-19)</h2>
  *  v0.2.1 (2021-02-01) updates the license year in some documents
  *  Remove support for <code>;;small text;;</code> Zettelmarkup.
     (breaking: Zettelmarkup)
  *  On macOS, the downloadable executable program is now called
     &ldquo;zettelstore&rdquo;, as on all other Unix-like platforms.
     (possibly breaking: macOS)
  *  External metadata (e.g. for zettel with file extension other than
     <code>.zettel</code>) are stored in files without an extension. Metadata
     files with extension <code>.meta</code> are still recognized, but result
     in a warning message. In a future version (probably v0.3),
     <code>.meta</code> files will be treated as ordinary content files,
     possibly resulting in duplicate content. In other words: usage of
     <code>.meta</code> files for storing metadata is deprecated.
     (possibly breaking: directory and file box)
  *  Show unlinked references in info page of each zettel. Unlinked references
     are phrases within zettel content that might reference another zettel with
     the same title as the phase.
     (major: webui)
  *  Add endpoint <code>/u/{ID}</code> to retrieve unlinked references.
     (major: api)
  *  Provide a logging facility.
     Log messages are written to standard output. Messages with level
     &ldquo;information&rdquo; are also written to a circular buffer (of length
     8192) which can be retrieved via a computed zettel. There is a command
     line flag <code>-l LEVEL</code> to specify an application global logging
     level on startup (default: &ldquo;information&rdquo;). Logging level can
     also be changed via the administrator console, even for specific (sub-)
     services.
     (major)
  *  The internal handling of zettel files is rewritten. This allows less
     reloads ands detects when the directory containing the zettel files is
     removed. The API, WebUI, and the admin console allow to manually refresh
     the internal state on demand.
     (major: box, webui)
  *  <code>.zettel</code> files with YAML header are now correctly written.
     (bug)
  *  Selecting zettel based on their metadata allows the same syntax as
     searching for zettel content. For example, you can list all zettel that
     have an identifier not ending with <code>00</code> by using the query
     <code>id=!&lt;00</code>.
     (minor: api, webui)
  *  Remove support for <code>//deprecated emphasized//</code> Zettelmarkup.
     (minor: Zettelmarkup)
  *  Add options to profile the software. Profiling can be enabled at the
     command line or via the administrator console.
     (minor)
  *  Add computed zettel that lists all supported parser / recognized zettel
     syntaxes.
     (minor)
  *  Add API call to check for enabled authentication.
     (minor: api)
  *  Renewing an API access token works even if authentication is not enabled.
     This corresponds to the behaviour of optaining an access token.
     (minor: api)
  *  If there is nothing to return, use HTTP status code 204, instead of 200 +
     <code>Content-Length: 0</code>.
     (minor: api)
  *  Metadata key <code>duplicates</code> stores the duplicate file names,
     instead of just a boolean value that there were duplicate file names.
     (minor)
  *  Document autostarting Zettelstore on Windows, macOS, and Linux.
     (minor)
  *  Many smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_1"></a><a id="0_1_0"></a>
<h2>Changes for Version 0.1 (2021-11-11)</h2>
  *  v0.1.3 (2021-12-15) fixes a bug where the modification date could be set
     when a new zettel is created.
  *  v0.1.2 (2021-11-18) fixes a bug when selecting zettel from a list when
     more than one comparison is negated.
  *  v0.1.1 (2021-11-12) updates the documentation, mostly related to the
     deprecation of the <code>//</code> markup.
  *  Remove visual Zettelmarkup (italic, underline). Semantic Zettelmarkup
     (emphasize, insert) is still allowed, but got a different syntax. The new
     syntax for <ins>inserted text</ins> is
     <code>&gt;&gt;inserted&gt;&gt;</code>, while its previous syntax now
     denotes <em>emphasized text</em>: <code>__emphasized__</code>. The
     previous syntax for emphasized text is now deprecated: <code>//deprecated
     emphasized//</code>. Starting with Version&nbsp;0.2.0, the deprecated
     syntax will not be supported. The reason is the collision with URLs that
     also contain the characters <code>//</code>. The ZMK encoding of a zettel
     may help with the transition
     (<code>/v/{ZettelID}?_part=zettel&amp;_enc=zmk</code>, on the Info page of
     each zettel in the WebUI). Additionally, all deprecated uses of
     <code>//</code> will be rendered with a dashed box within the WebUI.
     (breaking: Zettelmarkup).
  *  API client software is now a [https://zettelstore.de/client/|separate]
     project.
     (breaking)
  *  Initial support for HTTP security headers (Content-Security-Policy,
     Permissions-Policy, Referrer-Policy, X-Content-Type-Options,
     X-Frame-Options). Header values are currently some constant values.
     (possibly breaking: api, webui)
  *  Remove visual Zettelmarkup (bold, striketrough). Semantic Zettelmarkup
     (strong, delete) is still allowed and replaces the visual elements
     syntactically. The visual appearance should not change (depends on your
     changes / additions to CSS zettel).
     (possibly breaking: Zettelmarkup).
  *  Add API endpoint <code>POST /v</code> to retrieve HTMl and text encoded
     strings from given ZettelMarkup encoded values. This will be used to
     render a HTML page from a given zettel: in many cases the title of
     a zettel must be treated separately.
     (minor: api)
  *  Add API endpoint <code>/m</code> to retrieve only the metadata of
     a zettel.
     (minor: api)
  *  New metadata value <code>content-tags</code> contains the tags that were
     given in the zettel content. To put it simply, <code>all-tags</code>
     = <code>tags</code> + <code>content-tags</code>.
     (minor)
  *  Calculating the context of a zettel stops at the home zettel.
     (minor: api, webui)
  *  When renaming or deleting a zettel, a warning will be given, if other
     zettel references the given zettel, or when &ldquo;deleting&rdquo; will
     uncover zettel in overlay box.
     (minor: webui)







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     (minor: directory and file/zip box)
  *  Many smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_2"></a>
<h2>Changes for Version 0.2 (2022-01-19)</h2>
  *  v0.2.1 (2021-02-01) updates the license year in some documents
  *  Remove support for <tt>;;small text;;</tt> Zettelmarkup.
     (breaking: Zettelmarkup)
  *  On macOS, the downloadable executable program is now called
     &ldquo;zettelstore&rdquo;, as on all other Unix-like platforms.
     (possibly breaking: macOS)
  *  External metadata (e.g. for zettel with file extension other than
     <tt>.zettel</tt>) are stored in files without an extension. Metadata files
     with extension <tt>.meta</tt> are still recognized, but result in
     a warning message. In a future version (probably v0.3), <tt>.meta</tt>
     files will be treated as ordinary content files, possibly resulting in
     duplicate content. In other words: usage of <tt>.meta</tt> files for
     storing metadata is deprecated.
     (possibly breaking: directory and file box)
  *  Show unlinked references in info page of each zettel. Unlinked references
     are phrases within zettel content that might reference another zettel with
     the same title as the phase.
     (major: webui)
  *  Add endpoint <tt>/u/{ID}</tt> to retrieve unlinked references.
     (major: api)
  *  Provide a logging facility.
     Log messages are written to standard output. Messages with level
     &ldquo;information&rdquo; are also written to a circular buffer (of length
     8192) which can be retrieved via a computed zettel. There is a command
     line flag <tt>-l LEVEL</tt> to specify an application global logging level
     on startup (default: &ldquo;information&rdquo;). Logging level can also be
     changed via the administrator console, even for specific (sub-) services.

     (major)
  *  The internal handling of zettel files is rewritten. This allows less
     reloads ands detects when the directory containing the zettel files is
     removed. The API, WebUI, and the admin console allow to manually refresh
     the internal state on demand.
     (major: box, webui)
  *  <tt>.zettel</tt> files with YAML header are now correctly written.
     (bug)
  *  Selecting zettel based on their metadata allows the same syntax as
     searching for zettel content. For example, you can list all zettel that
     have an identifier not ending with <tt>00</tt> by using the query
     <tt>id=!&lt;00</tt>.
     (minor: api, webui)
  *  Remove support for <tt>//deprecated emphasized//</tt> Zettelmarkup.
     (minor: Zettelmarkup)
  *  Add options to profile the software. Profiling can be enabled at the
     command line or via the administrator console.
     (minor)
  *  Add computed zettel that lists all supported parser / recognized zettel
     syntaxes.
     (minor)
  *  Add API call to check for enabled authentication.
     (minor: api)
  *  Renewing an API access token works even if authentication is not enabled.
     This corresponds to the behaviour of optaining an access token.
     (minor: api)
  *  If there is nothing to return, use HTTP status code 204, instead of 200 +
     <tt>Content-Length: 0</tt>.
     (minor: api)
  *  Metadata key <tt>duplicates</tt> stores the duplicate file names, instead
     of just a boolean value that there were duplicate file names.
     (minor)
  *  Document autostarting Zettelstore on Windows, macOS, and Linux.
     (minor)
  *  Many smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_1"></a><a id="0_1_0"></a>
<h2>Changes for Version 0.1 (2021-11-11)</h2>
  *  v0.1.3 (2021-12-15) fixes a bug where the modification date could be set
     when a new zettel is created.
  *  v0.1.2 (2021-11-18) fixes a bug when selecting zettel from a list when
     more than one comparison is negated.
  *  v0.1.1 (2021-11-12) updates the documentation, mostly related to the
     deprecation of the <tt>//</tt> markup.
  *  Remove visual Zettelmarkup (italic, underline). Semantic Zettelmarkup
     (emphasize, insert) is still allowed, but got a different syntax. The new
     syntax for <ins>inserted text</ins> is <tt>&gt;&gt;inserted&gt;&gt;</tt>,

     while its previous syntax now denotes <em>emphasized text</em>:
     <tt>__emphasized__</tt>. The previous syntax for emphasized text is now
     deprecated: <tt>//deprecated emphasized//</tt>. Starting with
     Version&nbsp;0.2.0, the deprecated syntax will not be supported. The
     reason is the collision with URLs that also contain the characters
     <tt>//</tt>. The ZMK encoding of a zettel may help with the transition
     (<tt>/v/{ZettelID}?_part=zettel&amp;_enc=zmk</tt>, on the Info page of
     each zettel in the WebUI). Additionally, all deprecated uses of
     <tt>//</tt> will be rendered with a dashed box within the WebUI.
     (breaking: Zettelmarkup).
  *  API client software is now a [https://zettelstore.de/client/|separate]
     project.
     (breaking)
  *  Initial support for HTTP security headers (Content-Security-Policy,
     Permissions-Policy, Referrer-Policy, X-Content-Type-Options,
     X-Frame-Options). Header values are currently some constant values.
     (possibly breaking: api, webui)
  *  Remove visual Zettelmarkup (bold, striketrough). Semantic Zettelmarkup
     (strong, delete) is still allowed and replaces the visual elements
     syntactically. The visual appearance should not change (depends on your
     changes / additions to CSS zettel).
     (possibly breaking: Zettelmarkup).
  *  Add API endpoint <tt>POST /v</tt> to retrieve HTMl and text encoded
     strings from given ZettelMarkup encoded values. This will be used to
     render a HTML page from a given zettel: in many cases the title of
     a zettel must be treated separately.
     (minor: api)
  *  Add API endpoint <tt>/m</tt> to retrieve only the metadata of a zettel.

     (minor: api)
  *  New metadata value <tt>content-tags</tt> contains the tags that were given
     in the zettel content. To put it simply, <tt>all-tags</tt> = <tt>tags</tt>
     + <tt>content-tags</tt>.
     (minor)
  *  Calculating the context of a zettel stops at the home zettel.
     (minor: api, webui)
  *  When renaming or deleting a zettel, a warning will be given, if other
     zettel references the given zettel, or when &ldquo;deleting&rdquo; will
     uncover zettel in overlay box.
     (minor: webui)
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     (info)
  *  Many smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_0_15"></a>
<h2>Changes for Version 0.0.15 (2021-09-17)</h2>
  *  Move again endpoint characters for authentication to make room for future
     features. WebUI authentication moves from <code>/a</code> to
     <code>/i</code> (login) and <code>/i?logout</code> (logout). API
     authentication moves from <code>/v</code> to </code>/a</code>. JSON-based
     basic zettel handling moves from <code>/z</code> to <code>/j</code> and
     <code>/z/{ID}</code> to <code>/j/{ID}</code>. Since the API client is

     updated too, this should not be a breaking change for most users.

     (minor: api, webui; possibly breaking)
  *  Add API endpoint <code>/v/{ID}</code> to retrieve an evaluated zettel in
     various encodings. Mostly replaces endpoint <code>/z/{ID}</code> for other
     encodings except &ldquo;json&rdquo; and &ldquo;raw&rdquo;. Endpoint
     <code>/j/{ID}</code> now only returns JSON data, endpoint
     <code>/z/{ID}</code> is used to retrieve plain zettel data (previously
     called &ldquo;raw&rdquo;). See documentation for details.
     (major: api; breaking)
  *  Metadata values of type <em>tag set</em> (the metadata with key
     <code>tags</code> is its most prominent example), are now compared in
     a case-insensitive manner. Tags that only differ in upper / lower case
     character are now treated identical. This might break your workflow, if
     you depend on case-sensitive comparison of tag values. Tag values are
     translated to their lower case equivalent before comparing them and when
     you edit a zettel through Zettelstore. If you just modify the zettel
     files, your tag values remain unchanged.
     (major; breaking)
  *  Endpoint <code>/z/{ID}</code> allows the same methods as endpoint
     <code>/j/{ID}</code>: <code>GET</code> retrieves zettel (see above),
     <code>PUT</code> updates a zettel, <code>DELETE</code> deletes a zettel,
     <code>MOVE</code> renames a zettel. In addtion, <code>POST /z</code> will
     create a new zettel. When zettel data must be given, the format is plain
     text, with metadata separated from content by an empty line. See
     documentation for more details.
     (major: api (plus WebUI for some details))
  *  Allows to transclude / expand the content of another zettel into a target
     zettel when the zettel is rendered. By using the syntax of embedding an
     image (which is some kind of expansion too), the first top-level paragraph
     of a zettel may be transcluded into the target zettel. Endless recursion
     is checked, as well as a possible &ldquo;transclusion bomb &rdquo;
     (similar to a XML bomb). See manual for details.
     (major: zettelmarkup)
  *  The endpoint <code>/z</code> allows to list zettel in a simpler format
     than endpoint <code>/j</code>: one line per zettel, and only zettel
     identifier plus zettel title.
     (minor: api)
  *  Folgezettel are now displayed with full title at the bottom of a page.
     (minor: webui)
  *  Add API endpoint <code>/p/{ID}</code> to retrieve a parsed, but not
     evaluated zettel in various encodings.
     (minor: api)
  *  Fix: do not list a shadowed zettel that matches the select criteria.
     (minor)
  *  Many smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_0_14"></a>
<h2>Changes for Version 0.0.14 (2021-07-23)</h2>
  *  Rename &ldquo;place&rdquo; into &ldquo;box&rdquo;. This also affects the
     configuration keys to specify boxes <code>box-uri<em>X</em></code>
     (previously <code>place-uri-<em>X</em></code>. Older changes documented
     here are renamed too.
     (breaking)
  *  Add API for creating, updating, renaming, and deleting zettel.
     (major: api)
  *  Initial API client for Go.
     (major: api)
  *  Remove support for paging of WebUI list. Runtime configuration key
     <code>list-page-size</code> is removed. If you still specify it, it will
     be ignored.
     (major: webui)
  *  Use endpoint <code>/v</code> for user authentication via API. Endpoint
     <code>/a</code> is now used for the web user interface only. Similar,
     endpoint <code>/y</code> (&ldquo;zettel context&rdquo;) is renamed to
     <code>/x</code>.
     (minor, possibly breaking)
  *  Type of used-defined metadata is determined by suffix of key:
     <code>-number</code>, <code>-url</code>, <code>-zid</code> will result the
     values to be interpreted as a number, an URL, or a zettel identifier.
     (minor, but possibly breaking if you already used a metadata key with
     above suffixes, but as a string type)
  *  New <code>user-role</code> &ldquo;creator&rdquo;, which is only allowed to
     create new zettel (except user zettel). This role may only read and update
     public zettel or its own user zettel. Added to support future client
     software (e.g. on a mobile device) that automatically creates new zettel
     but, in case of a password loss, should not allow to read existing zettel.
     (minor, possibly breaking, because new zettel template zettel must always
     prepend the string <code>new-</code> before metdata keys that should be
     transferred to the new zettel)
  *  New suported metadata key <code>box-number</code>, which gives an
     indication from which box the zettel was loaded.
     (minor)
  *  New supported syntax <code>html</code>.
     (minor)
  *  New predefined zettel &ldquo;User CSS&rdquo; that can be used to redefine
     some predefined CSS (without modifying the base CSS zettel).
     (minor: webui)
  *  When a user moves a zettel file with additional characters into the box
     directory, these characters are preserved when zettel is updated.
     (bug)
  *  The phase &ldquo;filtering a zettel list&rdquo; is more precise
     &ldquo;selecting zettel&rdquo;
     (documentation)
  *  Many smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_0_13"></a>
<h2>Changes for Version 0.0.13 (2021-06-01)</h2>
  *  Startup configuration <code>box-<em>X</em>-uri</code> (where <em>X</em> is
     a number greater than zero) has been renamed to
     <code>box-uri-<em>X</em></code>.
     (breaking)
  *  Web server processes startup configuration <code>url-prefix</code>. There
     is no need for stripping the prefix by a front-end web server any more.
     (breaking: webui, api)
  *  Administrator console (only optional accessible locally). Enable it only
     on systems with a single user or with trusted users. It is disabled by
     default.
     (major: core)
  *  Remove visibility value &ldquo;simple-expert&rdquo; introduced in
     [#0_0_8|version 0.0.8]. It was too complicated, esp. authorization. There
     was a name collision with the &ldquo;simple&rdquo; directory box sub-type.
     (major)
  *  For security reasons, HTML blocks are not encoded as HTML if they contain
     certain snippets, such as <code>&lt;script</code> or
     <code>&lt;iframe</code>. These may be caused by using CommonMark as
     a zettel syntax.
     (major)
  *  Full-text search can be a prefix search or a search for equal words, in
     addition to the search whether a word just contains word of the search
     term.
     (minor: api, webui)
  *  Full-text search for URLs, with above additional operators.
     (minor: api, webui)
  *  Add system zettel about license, contributors, and dependencies (and their
     license).
     For a nicer layout of zettel identifier, the zettel about environment
     values and about runtime metrics got new zettel identifier. This affects
     only user that referenced those zettel.
     (minor)
  *  Local images that cannot be read (not found or no access rights) are
     substituted with the new default image, a spinning emoji.
     See [/file?name=box/constbox/emoji_spin.gif].
     (minor: webui)
  *  Add zettelmarkup syntax for a table row that should be ignored:
     <code>|%</code>. This allows to paste output of the administrator console
     into a zettel.
     (minor: zmk)
  *  Many smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_0_12"></a>
<h2>Changes for Version 0.0.12 (2021-04-16)</h2>
  *  Raise the per-process limit of open files on macOS to 1.048.576. This
     allows most macOS users to use at least 500.000 zettel. That should be
     enough for the near future.
     (major)
  *  Mitigate the shortcomings of the macOS version by introducing types of
     directory boxes. The original directory box type is now called "notify"
     (the default value). There is a new type called "simple". This new type
     does not notify Zettelstore when some of the underlying Zettel files
     change.
     (major)
  *  Add new startup configuration <code>default-dir-box-type</code>, which
     gives the default value for specifying a directory box type. The default
     value is &ldquo;notify&rdquo;. On macOS, the default value may be changed
     &ldquo;simple&rdquo; if some errors occur while raising the per-process
     limit of open files.
     (minor)

<a id="0_0_11"></a>
<h2>Changes for Version 0.0.11 (2021-04-05)</h2>
  *  New box schema "file" allows to read zettel from a ZIP file.
     A zettel collection can now be packaged and distributed easier.
     (major: server)
  *  Non-restricted search is a full-text search. The search string will be
     normalized according to Unicode NFKD. Every character that is not a letter
     or a number will be ignored for the search. It is sufficient if the words
     to be searched are part of words inside a zettel, both content and
     metadata.
     (major: api, webui)
  *  A zettel can be excluded from being indexed (and excluded from being found
     in a search) if it contains the metadata <code>no-index: true</code>.
     (minor: api, webui)
  *  Menu bar is shown when displaying error messages.
     (minor: webui)
  *  When selecting zettel, it can be specified that a given value should
     <em>not</em> match. Previously, only the whole select criteria could be
     negated (which is still possible).
     (minor: api, webui)
  *  You can select a zettel by specifying that specific metadata keys must
     (or must not) be present.
     (minor: api, webui)
  *  Context of a zettel (introduced in version 0.0.10) does not take tags into
     account any more. Using some tags for determining the context resulted
     into erratic, non-deterministic context lists.
     (minor: api, webui)
  *  Selecting zettel depending on tag values can be both by comparing only the
     prefix or the whole string. If a search value begins with '#', only zettel
     with the exact tag will be returned. Otherwise a zettel will be returned
     if the search string just matches the prefix of only one of its tags.
     (minor: api, webui)
  *  Many smaller bug fixes and improvements, to the software and to the
     documentation.

A note for users of macOS: in the current release and with macOS's default
values, a zettel directory must not contain more than approx. 250 files. There
are three options to mitigate this limitation temporarily:
  #  You update the per-process limit of open files on macOS.
  #  You setup a virtualization environment to run Zettelstore on Linux or
     Windows.
  #  You wait for version 0.0.12 which addresses this issue.

<a id="0_0_10"></a>
<h2>Changes for Version 0.0.10 (2021-02-26)</h2>
  *  Menu item &ldquo;Home&rdquo; now redirects to a home zettel.
     Its default identifier is <code>000100000000</code>. The identifier can be
     changed with configuration key <code>home-zettel</code>, which supersedes
     key <code>start</code>. The default home zettel contains some welcoming
     information for the new user.
     (major: webui)
  *  Show context of a zettel by following all backward and/or forward
     reference up to a defined depth and list the resulting zettel.
     Additionally, some zettel with similar tags as the initial zettel are also
     taken into account.
     (major: api, webui)
  *  A zettel that references other zettel within first-level list items, can
     act as a &ldquo;table of contents&rdquo; zettel. The API endpoint
     <code>/o/{ID}</code> allows to retrieve the referenced zettel in the same
     order as they occur in the zettel.
     (major: api)
  *  The zettel &ldquo;New Menu&rdquo; with identifier
     <code>00000000090000</code> contains a list of all zettel that should act
     as a template for new zettel. They are listed in the WebUIs
     &rdquo;New&ldquo; menu. This is an application of the previous item. It
     supersedes the usage of a role <code>new-template</code> introduced in
     [#0_0_6|version 0.0.6]. <b>Please update your zettel if you make use of
     the now deprecated feature.</b>
     (major: webui)
  *  A reference that starts with two slash characters
     (&ldquo;<code>//</code>&rdquo;) it will be interpreted relative to the
     value of <code>url-prefix</code>. For example, if <code>url-prefix</code>
     has the value <code>/manual/</code>, the reference
     <code>&lbrack;&lbrack;Zettel list|//h]]</code> will render as <code>&lt;a
     href="/manual/h">Zettel list&lt;/a></code>.
     (minor: syntax)
  *  Searching/selecting ignores the leading '#' character of tags.
     (minor: api, webui)
  *  When result of selecting or searching is presented, the query is written
     as the page heading.
     (minor: webui)
  *  A reference to a zettel that contains a URL fragment, will now be
     processed by the indexer.
     (bug: server)
  *  Runtime configuration key <code>marker-external</code> now defaults to
     &ldquo;&amp;#10138;&rdquo; (&ldquo;&#10138;&rdquo;). It is more beautiful
     than the previous &ldquo;&amp;#8599;&amp;#xfe0e;&rdquo;
     (&ldquo;&#8599;&#65038;&rdquo;), which also needed the additional
     &ldquo;&amp;#xfe0e;&rdquo; to disable the conversion to an emoji on
     iPadOS.
     (minor: webui)
  *  A pre-build binary for macOS ARM64 (also known as Apple silicon) is
     available.
     (minor: infrastructure)
  *  Many smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_0_9"></a>
<h2>Changes for Version 0.0.9 (2021-01-29)</h2>
This is the first version that is managed by [https://fossil-scm.org|Fossil]
instead of GitHub. To access older versions, use the Git repository under
[https://github.com/zettelstore/zettelstore-github|zettelstore-github].

<h3>Server / API</h3>
  *  (major) Support for property metadata.
             Metadata key <code>published</code> is the first example of such
             a property.
  *  (major) A background activity (called <i>indexer</i>) continuously
             monitors zettel changes to establish the reverse direction of
             found internal links. This affects the new metadata keys
             <code>precursor</code> and <code>folge</code>. A user specifies
             the precursor of a zettel and the indexer computes the property
             metadata for
             [https://forum.zettelkasten.de/discussion/996/definition-folgezettel|Folgezettel].
             Metadata keys with type &ldquo;Identifier&rdquo; or
             &ldquo;IdentifierSet&rdquo; that have no inverse key (like
             <code>precursor</code> and <code>folge</code> with add to the key
             <code>forward</code> that also collects all internal links within
             the content. The computed inverse is <code>backward</code>, which
             provides all backlinks. The key <code>back</code> is computed as
             the value of <code>backward</code>, but without forward links.
             Therefore, <code>back</code> is something like the list of
             &ldquo;smart backlinks&rdquo;.
  *  (minor) If Zettelstore is being stopped, an appropriate message is written
             in the console log.
  *  (minor) New computed zettel with environmental data, the list of supported
             meta data keys, and statistics about all configured zettel boxes.
             Some other computed zettel got a new identifier (to make room for
             other variant).
  *  (minor) Remove zettel <code>00000000000004</code>, which contained the Go
             version that produced the Zettelstore executable. It was too
             specific to the current implementation. This information is now
             included in zettel <code>00000000000006</code> (<i>Zettelstore
             Environment Values</i>).
  *  (minor) Predefined templates for new zettel do not contain any value for
             attribute <code>visibility</code> any more.
  *  (minor) Add a new metadata key type called &ldquo;Zettelmarkup&rdquo;.
             It is a non-empty string, that will be formatted with
             Zettelmarkup. <code>title</code> and <code>default-title</code>
             have this type.
  *  (major) Rename zettel syntax &ldquo;meta&rdquo; to &ldquo;none&rdquo;.
             Please update the <i>Zettelstore Runtime Configuration</i> and all
             other zettel that previously used the value &ldquo;meta&rdquo;.
             Other zettel are typically user zettel, used for authentication.
             However, there is no real harm, if you do not update these zettel.
             In this case, the metadata is just not presented when rendered.
             Zettelstore will still work.
  *  (minor) Login will take at least 500 milliseconds to mitigate login
             attacks. This affects both the API and the WebUI.
  *  (minor) Add a sort option &ldquo;_random&rdquo; to produce a zettel list
             in random order. <code>_order</code> / <code>order</code> are now
             an aliases for the query parameters <code>_sort</code>
             / <code>sort</code>.

<h3>WebUI</h3>
  *  (major) HTML template zettel for WebUI now use
             [https://mustache.github.io/|Mustache] syntax instead of
             previously used [https://golang.org/pkg/html/template/|Go
             template] syntax. This allows these zettel to be used, even when
             there is another Zettelstore implementation, in another
             programming language. Mustache is available for approx. 48
             programming languages, instead of only one for Go templates. <b>If
             you modified your templates, you <i>must</i> adapt them to the new
             syntax. Otherwise the WebUI will not work.</b>
  *  (major) Show zettel identifier of folgezettel and precursor zettel in the
             header of a rendered zettel. If a zettel has real backlinks, they
             are shown at the botton of the page (&ldquo;Additional links to
             this zettel&rdquo;).
  *  (minor) All property metadata, even computed metadata is shown in the info
             page of a zettel.
  *  (minor) Rendering of metadata keys <code>title</code> and
             <code>default-title</code> in info page changed to a full HTML
             output for these Zettelmarkup encoded values.
  *  (minor) Always show the zettel identifier on the zettel detail view.
             Previously, the identifier was not shown if the zettel was not
             editable.
  *  (minor) Do not show computed metadata in edit forms anymore.

<a id="0_0_8"></a>
<h2>Changes for Version 0.0.8 (2020-12-23)</h2>
<h3>Server / API</h3>
  *  (bug) Zettel files with extension <code>.jpg</code> and without metadata
           will get a <code>syntax</code> value &ldquo;jpg&rdquo;. The internal
           data structure got the same value internally, instead of
           &ldquo;jpeg&rdquo;. This has been fixed for all possible alternative
           syntax values.
  *  (bug) If a file, e.g. an image file like <code>20201130190200.jpg</code>,
           is added to the directory box, its metadata are just calculated from
           the information available. Updated metadata did not find its way
           into the zettel box, because the <code>.meta</code> file was not
           written.
  *  (bug) If just the <code>.meta</code> file was deleted manually, the zettel
           was assumed to be missing. A workaround is to restart the software.
           If the <code>.meta</code> file is deleted, metadata is now
           calculated in the same way when the <code>.meta</code> file is
           non-existing at the start of the software.
  *  (bug) A link to the current zettel, only using a fragment (e.g.
           <code>&#91;&#91;Title|#title]]</code>) is now handled correctly as
           a zettel link (and not as a link to external material).
  *  (minor) Allow zettel to be marked as &ldquo;read only&rdquo;.
             This is done through the metadata key <code>read-only</code>.
  *  (bug) When renaming a zettel, check all boxes for the new zettel
           identifier, not just the first one. Otherwise it will be possible to
           shadow a read-only zettel from a next box, effectively modifying it.
  *  (minor) Add support for a configurable default value for metadata key
             <code>visibility</code>.
  *  (bug) If <code>list-page-size</code> is set to a relatively small value
           and the authenticated user is <i>not</i> the owner, some zettel were
           not shown in the list of zettel or were not returned by the API.
  *  (minor) Add support for new visibility &ldquo;expert&rdquo;.
             An owner becomes an expert, if the runtime configuration key
             <code>expert-mode</code> is set to true.
  *  (major) Add support for computed zettel.
             These zettel have an identifier less than
             <code>0000000000100</code>. Most of them are only visible, if
             <code>expert-mode</code> is enabled.
  *  (bug)   Fixes a memory leak that results in too many open files after
             approx. 125 reload operations.
  *  (major) Predefined templates for new zettel got an explicit value for
             visibility: &ldquo;login&rdquo;. Please update these zettel if you
             modified them.
  *  (major) Rename key <code>readonly</code> of <i>Zettelstore Startup
             Configuration</i> to <code>read-only-mode</code>. This was done to
             avoid some confusion with the the zettel metadata key
             <code>read-only</code>. <b>Please adapt your startup configuration.
             Otherwise your Zettelstore will be accidentally writable.</b>
  *  (minor) References starting with &ldquo;./&rdquo; and &ldquo;../&rdquo;
             are treated as a local reference. Previously, only the prefix
             &ldquo;/&rdquo; was treated as a local reference.
  *  (major) Metadata key <code>modified</code> will be set automatically to
             the current local time if a zettel is updated through Zettelstore.
             <b>If you used that key previously for your own, you should rename
             it before you upgrade.</b>
  *  (minor) The new visibility value &ldquo;simple-expert&rdquo; ensures that
             many computed zettel are shown for new users. This is to enable
             them to send useful bug reports.
  *  (minor) When a zettel is stored as a file, its identifier is additionally
             stored within the metadata. This helps for better robustness in
             case the file names were corrupted. In addition, there could be
             a tool that compares the identifier with the file name.

<h3>WebUI</h3>
  *  (minor) Remove list of tags in &ldquo;List Zettel&rdquo; and search
             results. There was some feedback that the additional tags were not
             helpful.
  *  (minor) Move zettel field "role" above "tags" and move "syntax" more to
             "content".
  *  (minor) Rename zettel operation &ldquo;clone&rdquo; to &ldquo;copy&rdquo;.
  *  (major) All predefined HTML templates have now a visibility value
             &ldquo;expert&rdquo;. If you want to see them as an non-expert
             owner, you must temporary enable <code>expert-mode</code> and
             change the <code>visibility</code> metadata value.
  *  (minor) Initial support for
             [https://zettelkasten.de/posts/tags/folgezettel/|Folgezettel]. If
             you click on &ldquo;Folge&rdquo; (detail view or info view), a new
             zettel is created with a reference (<code>precursor</code>) to the
             original zettel. Title, role, tags, and syntax are copied from the
             original zettel.
  *  (major) Most predefined zettel have a title prefix of
             &ldquo;Zettelstore&rdquo;.
  *  (minor) If started in simple mode, e.g. via double click or without any
             command, some information for the new user is presented. In the
             terminal, there is a hint about opening the web browser and use







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     (info)
  *  Many smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_0_15"></a>
<h2>Changes for Version 0.0.15 (2021-09-17)</h2>
  *  Move again endpoint characters for authentication to make room for future
     features. WebUI authentication moves from <tt>/a</tt> to <tt>/i</tt>

     (login) and <tt>/i?logout</tt> (logout). API authentication moves from
     <tt>/v</tt> to </tt>/a</tt>. JSON-based basic zettel handling moves from

     <tt>/z</tt> to <tt>/j</tt> and <tt>/z/{ID}</tt> to <tt>/j/{ID}</tt>. Since
     the API client is updated too, this should not be a breaking change for
     most users.
     (minor: api, webui; possibly breaking)
  *  Add API endpoint <tt>/v/{ID}</tt> to retrieve an evaluated zettel in
     various encodings. Mostly replaces endpoint <tt>/z/{ID}</tt> for other
     encodings except &ldquo;json&rdquo; and &ldquo;raw&rdquo;. Endpoint
     <tt>/j/{ID}</tt> now only returns JSON data, endpoint <tt>/z/{ID}</tt> is
     used to retrieve plain zettel data (previously called &ldquo;raw&rdquo;).
     See documentation for details.
     (major: api; breaking)
  *  Metadata values of type <em>tag set</em> (the metadata with key
     <tt>tags</tt> is its most prominent example), are now compared in
     a case-insensitive manner. Tags that only differ in upper / lower case
     character are now treated identical. This might break your workflow, if
     you depend on case-sensitive comparison of tag values. Tag values are
     translated to their lower case equivalent before comparing them and when
     you edit a zettel through Zettelstore. If you just modify the zettel
     files, your tag values remain unchanged.
     (major; breaking)
  *  Endpoint <tt>/z/{ID}</tt> allows the same methods as endpoint
     <tt>/j/{ID}</tt>: <tt>GET</tt> retrieves zettel (see above), <tt>PUT</tt>
     updates a zettel, <tt>DELETE</tt> deletes a zettel, <tt>MOVE</tt> renames
     a zettel. In addtion, <tt>POST /z</tt> will create a new zettel. When
     zettel data must be given, the format is plain text, with metadata
     separated from content by an empty line. See documentation for more
     details.
     (major: api (plus WebUI for some details))
  *  Allows to transclude / expand the content of another zettel into a target
     zettel when the zettel is rendered. By using the syntax of embedding an
     image (which is some kind of expansion too), the first top-level paragraph
     of a zettel may be transcluded into the target zettel. Endless recursion
     is checked, as well as a possible &ldquo;transclusion bomb &rdquo;
     (similar to a XML bomb). See manual for details.
     (major: zettelmarkup)
  *  The endpoint <tt>/z</tt> allows to list zettel in a simpler format than
     endpoint <tt>/j</tt>: one line per zettel, and only zettel identifier plus
     zettel title.
     (minor: api)
  *  Folgezettel are now displayed with full title at the bottom of a page.
     (minor: webui)
  *  Add API endpoint <tt>/p/{ID}</tt> to retrieve a parsed, but not evaluated
     zettel in various encodings.
     (minor: api)
  *  Fix: do not list a shadowed zettel that matches the select criteria.
     (minor)
  *  Many smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_0_14"></a>
<h2>Changes for Version 0.0.14 (2021-07-23)</h2>
  *  Rename &ldquo;place&rdquo; into &ldquo;box&rdquo;. This also affects the
     configuration keys to specify boxes <tt>box-uri<em>X</em></tt> (previously
     <tt>place-uri-<em>X</em></tt>. Older changes documented here are renamed
     too.
     (breaking)
  *  Add API for creating, updating, renaming, and deleting zettel.
     (major: api)
  *  Initial API client for Go.
     (major: api)
  *  Remove support for paging of WebUI list. Runtime configuration key
     <tt>list-page-size</tt> is removed. If you still specify it, it will be
     ignored.
     (major: webui)
  *  Use endpoint <tt>/v</tt> for user authentication via API. Endpoint
     <tt>/a</tt> is now used for the web user interface only. Similar, endpoint
     <tt>/y</tt> (&ldquo;zettel context&rdquo;) is renamed to <tt>/x</tt>.

     (minor, possibly breaking)
  *  Type of used-defined metadata is determined by suffix of key:
     <tt>-number</tt>, <tt>-url</tt>, <tt>-zid</tt> will result the values to
     be interpreted as a number, an URL, or a zettel identifier.
     (minor, but possibly breaking if you already used a metadata key with
     above suffixes, but as a string type)
  *  New <tt>user-role</tt> &ldquo;creator&rdquo;, which is only allowed to
     create new zettel (except user zettel). This role may only read and update
     public zettel or its own user zettel. Added to support future client
     software (e.g. on a mobile device) that automatically creates new zettel
     but, in case of a password loss, should not allow to read existing zettel.
     (minor, possibly breaking, because new zettel template zettel must always
     prepend the string <tt>new-</tt> before metdata keys that should be
     transferred to the new zettel)
  *  New suported metadata key <tt>box-number</tt>, which gives an indication
     from which box the zettel was loaded.
     (minor)
  *  New supported syntax <tt>html</tt>.
     (minor)
  *  New predefined zettel &ldquo;User CSS&rdquo; that can be used to redefine
     some predefined CSS (without modifying the base CSS zettel).
     (minor: webui)
  *  When a user moves a zettel file with additional characters into the box
     directory, these characters are preserved when zettel is updated.
     (bug)
  *  The phase &ldquo;filtering a zettel list&rdquo; is more precise
     &ldquo;selecting zettel&rdquo;
     (documentation)
  *  Many smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_0_13"></a>
<h2>Changes for Version 0.0.13 (2021-06-01)</h2>
  *  Startup configuration <tt>box-<em>X</em>-uri</tt> (where <em>X</em> is a
     number greater than zero) has been renamed to
     <tt>box-uri-<em>X</em></tt>.
     (breaking)
  *  Web server processes startup configuration <tt>url-prefix</tt>. There is
     no need for stripping the prefix by a front-end web server any more.
     (breaking: webui, api)
  *  Administrator console (only optional accessible locally). Enable it only
     on systems with a single user or with trusted users. It is disabled by
     default.
     (major: core)
  *  Remove visibility value &ldquo;simple-expert&rdquo; introduced in
     [#0_0_8|version 0.0.8]. It was too complicated, esp. authorization. There
     was a name collision with the &ldquo;simple&rdquo; directory box sub-type.
     (major)
  *  For security reasons, HTML blocks are not encoded as HTML if they contain
     certain snippets, such as <tt>&lt;script</tt> or <tt>&lt;iframe</tt>.
     These may be caused by using CommonMark as a zettel syntax.

     (major)
  *  Full-text search can be a prefix search or a search for equal words, in
     addition to the search whether a word just contains word of the search
     term.
     (minor: api, webui)
  *  Full-text search for URLs, with above additional operators.
     (minor: api, webui)
  *  Add system zettel about license, contributors, and dependencies (and their
     license).
     For a nicer layout of zettel identifier, the zettel about environment
     values and about runtime metrics got new zettel identifier. This affects
     only user that referenced those zettel.
     (minor)
  *  Local images that cannot be read (not found or no access rights) are
     substituted with the new default image, a spinning emoji.
     See [/file?name=box/constbox/emoji_spin.gif].
     (minor: webui)
  *  Add zettelmarkup syntax for a table row that should be ignored:
     <tt>|%</tt>. This allows to paste output of the administrator console into
     a zettel.
     (minor: zmk)
  *  Many smaller bug fixes and improvements, to the software and to the
     documentation.

<a id="0_0_12"></a>
<h2>Changes for Version 0.0.12 (2021-04-16)</h2>
  *  Raise the per-process limit of open files on macOS to 1.048.576. This
     allows most macOS users to use at least 500.000 zettel. That should be
     enough for the near future.
     (major)
  *  Mitigate the shortcomings of the macOS version by introducing types of
     directory boxes. The original directory box type is now called "notify"
     (the default value). There is a new type called "simple". This new type
     does not notify Zettelstore when some of the underlying Zettel files
     change.
     (major)
  *  Add new startup configuration <tt>default-dir-box-type</tt>, which gives
     the default value for specifying a directory box type. The default value
     is &ldquo;notify&rdquo;. On macOS, the default value may be changed
     &ldquo;simple&rdquo; if some errors occur while raising the per-process
     limit of open files.
     (minor)

<a id="0_0_11"></a>
<h2>Changes for Version 0.0.11 (2021-04-05)</h2>
  *  New box schema "file" allows to read zettel from a ZIP file.
     A zettel collection can now be packaged and distributed easier.
     (major: server)
  *  Non-restricted search is a full-text search. The search string will be
     normalized according to Unicode NFKD. Every character that is not a letter
     or a number will be ignored for the search. It is sufficient if the words
     to be searched are part of words inside a zettel, both content and
     metadata.
     (major: api, webui)
  *  A zettel can be excluded from being indexed (and excluded from being found
     in a search) if it contains the metadata <tt>no-index: true</tt>.
     (minor: api, webui)
  *  Menu bar is shown when displaying error messages.
     (minor: webui)
  *  When selecting zettel, it can be specified that a given value should
     <em>not</em> match. Previously, only the whole select criteria could be
     negated (which is still possible).
     (minor: api, webui)
  *  You can select a zettel by specifying that specific metadata keys must
     (or must not) be present.
     (minor: api, webui)
  *  Context of a zettel (introduced in version 0.0.10) does not take tags into
     account any more. Using some tags for determining the context resulted
     into erratic, non-deterministic context lists.
     (minor: api, webui)
  *  Selecting zettel depending on tag values can be both by comparing only the
     prefix or the whole string. If a search value begins with '#', only zettel
     with the exact tag will be returned. Otherwise a zettel will be returned
     if the search string just matches the prefix of only one of its tags.
     (minor: api, webui)
  *  Many smaller bug fixes and improvements, to the software and to the documentation.


A note for users of macOS: in the current release and with macOS's default
values, a zettel directory must not contain more than approx. 250 files. There
are three options to mitigate this limitation temporarily:
  #  You update the per-process limit of open files on macOS.
  #  You setup a virtualization environment to run Zettelstore on Linux or Windows.

  #  You wait for version 0.0.12 which addresses this issue.

<a id="0_0_10"></a>
<h2>Changes for Version 0.0.10 (2021-02-26)</h2>
  *  Menu item &ldquo;Home&rdquo; now redirects to a home zettel.
     Its default identifier is <tt>000100000000</tt>.
     The identifier can be changed with configuration key <tt>home-zettel</tt>, which supersedes key <tt>start</tt>.
     The default home zettel contains some welcoming information for the new user.

     (major: webui)
  *  Show context of a zettel by following all backward and/or forward reference
     up to a defined depth and list the resulting zettel. Additionally, some zettel
     with similar tags as the initial zettel are also taken into account.

     (major: api, webui)
  *  A zettel that references other zettel within first-level list items, can act
     as a &ldquo;table of contents&rdquo; zettel.
     The API endpoint <tt>/o/{ID}</tt> allows to retrieve the referenced zettel in
     the same order as they occur in the zettel.
     (major: api)
  *  The zettel &ldquo;New Menu&rdquo; with identifier <tt>00000000090000</tt> contains
     a list of all zettel that should act as a template for new zettel.
     They are listed in the WebUIs &rdquo;New&ldquo; menu.
     This is an application of the previous item.
     It supersedes the usage of a role <tt>new-template</tt> introduced in [#0_0_6|version 0.0.6].
     <b>Please update your zettel if you make use of the now deprecated feature.</b>

     (major: webui)
  *  A reference that starts with two slash characters (&ldquo;<code>//</code>&rdquo;)
     it will be interpreted relative to the value of <code>url-prefix</code>.

     For example, if <code>url-prefix</code> has the value <code>/manual/</code>,
     the reference <code>&lbrack;&lbrack;Zettel list|//h]]</code> will render as
     <code>&lt;a href="/manual/h">Zettel list&lt;/a></code>. (minor: syntax)

  *  Searching/selecting ignores the leading '#' character of tags.
     (minor: api, webui)
  *  When result of selecting or searching is presented, the query is written as the page heading.

     (minor: webui)
  *  A reference to a zettel that contains a URL fragment, will now be processed by the indexer.

     (bug: server)
  *  Runtime configuration key <tt>marker-external</tt> now defaults to
     &ldquo;&amp;#10138;&rdquo; (&ldquo;&#10138;&rdquo;). It is more beautiful
     than the previous &ldquo;&amp;#8599;&amp;#xfe0e;&rdquo;
     (&ldquo;&#8599;&#65038;&rdquo;), which also needed the additional
     &ldquo;&amp;#xfe0e;&rdquo; to disable the conversion to an emoji on iPadOS.

     (minor: webui)
  *  A pre-build binary for macOS ARM64 (also known as Apple silicon) is available.

     (minor: infrastructure)
  *  Many smaller bug fixes and improvements, to the software and to the documentation.


<a id="0_0_9"></a>
<h2>Changes for Version 0.0.9 (2021-01-29)</h2>
This is the first version that is managed by [https://fossil-scm.org|Fossil]
instead of GitHub. To access older versions, use the Git repository under
[https://github.com/zettelstore/zettelstore-github|zettelstore-github].

<h3>Server / API</h3>
  *  (major) Support for property metadata.
             Metadata key <tt>published</tt> is the first example of such
             a property.
  *  (major) A background activity (called <i>indexer</i>) continuously
             monitors zettel changes to establish the reverse direction of
             found internal links. This affects the new metadata keys
             <tt>precursor</tt> and <tt>folge</tt>. A user specifies the
             precursor of a zettel and the indexer computes the property
             metadata for
             [https://forum.zettelkasten.de/discussion/996/definition-folgezettel|Folgezettel].
             Metadata keys with type &ldquo;Identifier&rdquo; or
             &ldquo;IdentifierSet&rdquo; that have no inverse key (like
             <tt>precursor</tt> and <tt>folge</tt> with add to the key
             <tt>forward</tt> that also collects all internal links within the
             content. The computed inverse is <tt>backward</tt>, which provides
             all backlinks. The key <tt>back</tt> is computed as the value of
             <tt>backward</tt>, but without forward links. Therefore,
             <tt>back</tt> is something like the list of &ldquo;smart
             backlinks&rdquo;.
  *  (minor) If Zettelstore is being stopped, an appropriate message is written
             in the console log.
  *  (minor) New computed zettel with environmental data, the list of supported
             meta data keys, and statistics about all configured zettel boxes.
             Some other computed zettel got a new identifier (to make room for
             other variant).
  *  (minor) Remove zettel <tt>00000000000004</tt>, which contained the Go
             version that produced the Zettelstore executable. It was too
             specific to the current implementation. This information is now
             included in zettel <tt>00000000000006</tt> (<i>Zettelstore
             Environment Values</i>).
  *  (minor) Predefined templates for new zettel do not contain any value for
             attribute <tt>visibility</tt> any more.
  *  (minor) Add a new metadata key type called &ldquo;Zettelmarkup&rdquo;.
             It is a non-empty string, that will be formatted with
             Zettelmarkup. <tt>title</tt> and <tt>default-title</tt> have this
             type.
  *  (major) Rename zettel syntax &ldquo;meta&rdquo; to &ldquo;none&rdquo;.
             Please update the <i>Zettelstore Runtime Configuration</i> and all
             other zettel that previously used the value &ldquo;meta&rdquo;.
             Other zettel are typically user zettel, used for authentication.
             However, there is no real harm, if you do not update these zettel.
             In this case, the metadata is just not presented when rendered.
             Zettelstore will still work.
  *  (minor) Login will take at least 500 milliseconds to mitigate login
             attacks. This affects both the API and the WebUI.
  *  (minor) Add a sort option &ldquo;_random&rdquo; to produce a zettel list
             in random order. <tt>_order</tt> / <tt>order</tt> are now an
             aliases for the query parameters <tt>_sort</tt> / <tt>sort</tt>.


<h3>WebUI</h3>
  *  (major) HTML template zettel for WebUI now use
             [https://mustache.github.io/|Mustache] syntax instead of
             previously used [https://golang.org/pkg/html/template/|Go
             template] syntax. This allows these zettel to be used, even when
             there is another Zettelstore implementation, in another
             programming language. Mustache is available for approx. 48
             programming languages, instead of only one for Go templates. <b>If
             you modified your templates, you <i>must</i> adapt them to the new
             syntax. Otherwise the WebUI will not work.</b>
  *  (major) Show zettel identifier of folgezettel and precursor zettel in the
             header of a rendered zettel. If a zettel has real backlinks, they
             are shown at the botton of the page (&ldquo;Additional links to
             this zettel&rdquo;).
  *  (minor) All property metadata, even computed metadata is shown in the info
             page of a zettel.
  *  (minor) Rendering of metadata keys <tt>title</tt> and
             <tt>default-title</tt> in info page changed to a full HTML output
             for these Zettelmarkup encoded values.
  *  (minor) Always show the zettel identifier on the zettel detail view.
             Previously, the identifier was not shown if the zettel was not
             editable.
  *  (minor) Do not show computed metadata in edit forms anymore.

<a id="0_0_8"></a>
<h2>Changes for Version 0.0.8 (2020-12-23)</h2>
<h3>Server / API</h3>
  *  (bug) Zettel files with extension <tt>.jpg</tt> and without metadata will
           get a <tt>syntax</tt> value &ldquo;jpg&rdquo;. The internal data
           structure got the same value internally, instead of
           &ldquo;jpeg&rdquo;. This has been fixed for all possible alternative
           syntax values.
  *  (bug) If a file, e.g. an image file like <tt>20201130190200.jpg</tt>, is
           added to the directory box, its metadata are just calculated from
           the information available. Updated metadata did not find its way
           into the zettel box, because the <tt>.meta</tt> file was not
           written.
  *  (bug) If just the <tt>.meta</tt> file was deleted manually, the zettel was
           assumed to be missing. A workaround is to restart the software. If
           the <tt>.meta</tt> file is deleted, metadata is now calculated in
           the same way when the <tt>.meta</tt> file is non-existing at the
           start of the software.
  *  (bug) A link to the current zettel, only using a fragment (e.g.
           <code>&#91;&#91;Title|#title]]</code>) is now handled correctly as
           a zettel link (and not as a link to external material).
  *  (minor) Allow zettel to be marked as &ldquo;read only&rdquo;.
             This is done through the metadata key <tt>read-only</tt>.
  *  (bug) When renaming a zettel, check all boxes for the new zettel
           identifier, not just the first one. Otherwise it will be possible to
           shadow a read-only zettel from a next box, effectively modifying it.
  *  (minor) Add support for a configurable default value for metadata key
             <tt>visibility</tt>.
  *  (bug) If <tt>list-page-size</tt> is set to a relatively small value and
           the authenticated user is <i>not</i> the owner, some zettel were not
           shown in the list of zettel or were not returned by the API.
  *  (minor) Add support for new visibility &ldquo;expert&rdquo;.
             An owner becomes an expert, if the runtime configuration key
             <tt>expert-mode</tt> is set to true.
  *  (major) Add support for computed zettel.
             These zettel have an identifier less than <tt>0000000000100</tt>.
             Most of them are only visible, if <tt>expert-mode</tt> is enabled.

  *  (bug)   Fixes a memory leak that results in too many open files after
             approx. 125 reload operations.
  *  (major) Predefined templates for new zettel got an explicit value for
             visibility: &ldquo;login&rdquo;. Please update these zettel if you
             modified them.
  *  (major) Rename key <tt>readonly</tt> of <i>Zettelstore Startup
             Configuration</i> to <tt>read-only-mode</tt>. This was done to
             avoid some confusion with the the zettel metadata key
             <tt>read-only</tt>. <b>Please adapt your startup configuration.
             Otherwise your Zettelstore will be accidentally writable.</b>
  *  (minor) References starting with &ldquo;./&rdquo; and &ldquo;../&rdquo;
             are treated as a local reference. Previously, only the prefix
             &ldquo;/&rdquo; was treated as a local reference.
  *  (major) Metadata key <tt>modified</tt> will be set automatically to the
             current local time if a zettel is updated through Zettelstore.
             <b>If you used that key previously for your own, you should rename
             it before you upgrade.</b>
  *  (minor) The new visibility value &ldquo;simple-expert&rdquo; ensures that
             many computed zettel are shown for new users. This is to enable
             them to send useful bug reports.
  *  (minor) When a zettel is stored as a file, its identifier is additionally
             stored within the metadata. This helps for better robustness in
             case the file names were corrupted. In addition, there could be
             a tool that compares the identifier with the file name.

<h3>WebUI</h3>
  *  (minor) Remove list of tags in &ldquo;List Zettel&rdquo; and search
             results. There was some feedback that the additional tags were not
             helpful.
  *  (minor) Move zettel field "role" above "tags" and move "syntax" more to
             "content".
  *  (minor) Rename zettel operation &ldquo;clone&rdquo; to &ldquo;copy&rdquo;.
  *  (major) All predefined HTML templates have now a visibility value
             &ldquo;expert&rdquo;. If you want to see them as an non-expert
             owner, you must temporary enable <tt>expert-mode</tt> and change
             the <tt>visibility</tt> metadata value.
  *  (minor) Initial support for
             [https://zettelkasten.de/posts/tags/folgezettel/|Folgezettel]. If
             you click on &ldquo;Folge&rdquo; (detail view or info view), a new
             zettel is created with a reference (<tt>precursor</tt>) to the
             original zettel. Title, role, tags, and syntax are copied from the
             original zettel.
  *  (major) Most predefined zettel have a title prefix of
             &ldquo;Zettelstore&rdquo;.
  *  (minor) If started in simple mode, e.g. via double click or without any
             command, some information for the new user is presented. In the
             terminal, there is a hint about opening the web browser and use
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     to stay with the old licenses (AGPLv3+, CC BY-SA 4.0), you are free to
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<a id="0_0_6"></a>
<h2>Changes for Version 0.0.6 (2020-11-23)</h2>
<h3>Server</h3>
  *  (major) Rename identifier of <i>Zettelstore Runtime Configuration</i> to
             <code>00000000000100</code> (previously
             <code>00000000000001</code>). This is done to gain some free
             identifier with smaller number to be used internally. <b>If you
             customized this zettel, please make sure to rename it to the new
             identifier.</b>
  *  (major) Rename the two essential metadata keys of a user zettel to
             <code>credential</code> and <code>user-id</code>. The previous
             values were <code>cred</code> and <code>ident</code>. <b>If you
             enabled user authentication and added some user zettel, make sure
             to change them accordingly. Otherwise these users will not
             authenticated any more.</b>
  *  (minor) Rename the scheme of the box URL where predefined zettel are
             stored to &ldquo;const&rdquo;. The previous value was
             &ldquo;globals&rdquo;.

<h3>Zettelmarkup</h3>
  *  (bug) Allow to specify a <i>fragment</i> in a reference to a zettel.
           Used to link to an internal position within a zettel.
           This applies to CommonMark too.

<h3>API</h3>
  *  (bug)   Encoding binary content in format &ldquo;json&rdquo; now results
             in valid JSON content.
  *  (bug)   All query parameters of selecting zettel must be true, regardless
             if a specific key occurs more than one or not.
  *  (minor) Encode all inherited meta values in all formats except
             &ldquo;raw&rdquo;. A meta value is called <i>inherited</i> if
             there is a key starting with <code>default-</code> in the
             <i>Zettelstore Runtime Configuration</i>. Applies to WebUI also.
  *  (minor) Automatic calculated identifier for headings (only for
             &ldquo;html&rdquo;, &ldquo;djson&rdquo;, &ldquo;native&rdquo;
             format and for the Web user interface). You can use this to
             provide a zettel reference that links to the heading, without
             specifying an explicit mark (<code>&#91;!mark]</code>).
  *  (major) Allow to retrieve all references of a given zettel.







|
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     to stay with the old licenses (AGPLv3+, CC BY-SA 4.0), you are free to
     fork from the previous version.

<a id="0_0_6"></a>
<h2>Changes for Version 0.0.6 (2020-11-23)</h2>
<h3>Server</h3>
  *  (major) Rename identifier of <i>Zettelstore Runtime Configuration</i> to
             <tt>00000000000100</tt> (previously <tt>00000000000001</tt>). This

             is done to gain some free identifier with smaller number to be
             used internally. <b>If you customized this zettel, please make
             sure to rename it to the new identifier.</b>
  *  (major) Rename the two essential metadata keys of a user zettel to
             <tt>credential</tt> and <tt>user-id</tt>. The previous values were
             <tt>cred</tt> and <tt>ident</tt>. <b>If you enabled user
             authentication and added some user zettel, make sure to change
             them accordingly. Otherwise these users will not authenticated any
             more.</b>
  *  (minor) Rename the scheme of the box URL where predefined zettel are
             stored to &ldquo;const&rdquo;. The previous value was
             &ldquo;globals&rdquo;.

<h3>Zettelmarkup</h3>
  *  (bug) Allow to specify a <i>fragment</i> in a reference to a zettel.
           Used to link to an internal position within a zettel.
           This applies to CommonMark too.

<h3>API</h3>
  *  (bug)   Encoding binary content in format &ldquo;json&rdquo; now results
             in valid JSON content.
  *  (bug)   All query parameters of selecting zettel must be true, regardless
             if a specific key occurs more than one or not.
  *  (minor) Encode all inherited meta values in all formats except
             &ldquo;raw&rdquo;. A meta value is called <i>inherited</i> if
             there is a key starting with <tt>default-</tt> in the
             <i>Zettelstore Runtime Configuration</i>. Applies to WebUI also.
  *  (minor) Automatic calculated identifier for headings (only for
             &ldquo;html&rdquo;, &ldquo;djson&rdquo;, &ldquo;native&rdquo;
             format and for the Web user interface). You can use this to
             provide a zettel reference that links to the heading, without
             specifying an explicit mark (<code>&#91;!mark]</code>).
  *  (major) Allow to retrieve all references of a given zettel.
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             contrast to &ldquo;zettel references&rdquo; and &ldquo;external
             references&rdquo;). When a local reference is displayed as an URL
             on the WebUI, it will not opened in a new window/tab. They will
             receive a <i>local</i> marker, when encoded as &ldquo;djson&rdquo;
             or &ldquo;native&rdquo;. Local references are listed on the
             <i>Info page</i> of each zettel.
  *  (minor) Change the default value for some visual sugar put after an
             external URL to <code>&\#8599;&\#xfe0e;</code>
             (&ldquo;&#8599;&#xfe0e;&rdquo;). This affects the former key
             <code>icon-material</code> of the <i>Zettelstore Runtime
             Configuration</i>, which is renamed to
             <code>marker-external</code>.
  *  (major) Allow multiple zettel to act as templates for creating new zettel.
             All zettel with a role value &ldquo;new-template&rdquo; act as
             a template to create a new zettel. The WebUI menu item
             &ldquo;New&rdquo; changed to a drop-down list with all those
             zettel, ordered by their identifier. All metadata keys with the
             prefix <code>new-</code> will be translated to a new or updated
             keys/value without that prefix. You can use this mechanism to
             specify a role for the new zettel, or a different title. The title
             of the template zettel is used in the drop-down list. The initial
             template zettel &ldquo;New Zettel&rdquo; has now a different
             zettel identifier (now: <code>00000000091001</code>, was:
             <code>00000000040001</code>). <b>Please update it, if you changed
             that zettel.</b>
             <br>Note: this feature was superseded in [#0_0_10|version 0.0.10]
             by the &ldquo;New Menu&rdquo; zettel.
  *  (minor) When a page should be opened in a new windows (e.g. for external
             references), the web browser is instructed to decouple the new
             page from the previous one for privacy and security reasons. In
             detail, the web browser is instructed to omit referrer information
             and to omit a JS object linking to the page that contained the
             external link.
  *  (minor) If the value of the <i>Zettelstore Runtime Configuration</i> key
             <code>list-page-size</code> is greater than zero, the number of
             WebUI list elements will be restricted and it is possible to
             change to the next/previous page to list more elements.
  *  (minor) Change CSS to enhance reading: make <code>line-height</code>
             a little smaller (previous: 1.6, now 1.4) and move list items to
             the left.

<a id="0_0_5"></a>
<h2>Changes for Version 0.0.5 (2020-10-22)</h2>
  *  Application Programming Interface (API) to allow external software to
     retrieve zettel data from the Zettelstore.
  *  Specify boxes, where zettel are stored, via an URL.
  *  Add support for a custom footer.

<a id="0_0_4"></a>
<h2>Changes for Version 0.0.4 (2020-09-11)</h2>
  *  Optional user authentication/authorization.
  *  New sub-commands <code>file</code> (use Zettelstore as a command line
     filter), <code>password</code> (for authentication), and
     <code>config</code>.

<a id="0_0_3"></a>
<h2>Changes for Version 0.0.3 (2020-08-31)</h2>
  *  Starting Zettelstore has been changed by introducing sub-commands.
     This change is also reflected on the server installation procedures.
  *  Limitations on renaming zettel has been relaxed.

<a id="0_0_2"></a>
<h2>Changes for Version 0.0.2 (2020-08-28)</h2>
  *  Configuration zettel now has ID <code>00000000000001</code> (previously:
     <code>00000000000000</code>).
  *  The zettel with ID <code>00000000000000</code> is no longer shown in any
     zettel list. If you changed the configuration zettel, you should rename it
     manually in its file directory.
  *  Creating a new zettel is now done by cloning an existing zettel.
     To mimic the previous behaviour, a zettel with ID
     <code>00000000040001</code> is introduced. You can change it if you need
     a different template zettel.

<a id="0_0_1"></a>
<h2>Changes for Version 0.0.1 (2020-08-21)</h2>
  *  Initial public release.







|

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             contrast to &ldquo;zettel references&rdquo; and &ldquo;external
             references&rdquo;). When a local reference is displayed as an URL
             on the WebUI, it will not opened in a new window/tab. They will
             receive a <i>local</i> marker, when encoded as &ldquo;djson&rdquo;
             or &ldquo;native&rdquo;. Local references are listed on the
             <i>Info page</i> of each zettel.
  *  (minor) Change the default value for some visual sugar put after an
             external URL to <tt>&\#8599;&\#xfe0e;</tt>
             (&ldquo;&#8599;&#xfe0e;&rdquo;). This affects the former key
             <tt>icon-material</tt> of the <i>Zettelstore Runtime
             Configuration</i>, which is renamed to <tt>marker-external</tt>.

  *  (major) Allow multiple zettel to act as templates for creating new zettel.
             All zettel with a role value &ldquo;new-template&rdquo; act as
             a template to create a new zettel. The WebUI menu item
             &ldquo;New&rdquo; changed to a drop-down list with all those
             zettel, ordered by their identifier. All metadata keys with the
             prefix <tt>new-</tt> will be translated to a new or updated
             keys/value without that prefix. You can use this mechanism to
             specify a role for the new zettel, or a different title. The title
             of the template zettel is used in the drop-down list. The initial
             template zettel &ldquo;New Zettel&rdquo; has now a different
             zettel identifier (now: <tt>00000000091001</tt>, was:
             <tt>00000000040001</tt>). <b>Please update it, if you changed that
             zettel.</b>
             <br>Note: this feature was superseded in [#0_0_10|version 0.0.10]
             by the &ldquo;New Menu&rdquo; zettel.
  *  (minor) When a page should be opened in a new windows (e.g. for external
             references), the web browser is instructed to decouple the new
             page from the previous one for privacy and security reasons. In
             detail, the web browser is instructed to omit referrer information
             and to omit a JS object linking to the page that contained the
             external link.
  *  (minor) If the value of the <i>Zettelstore Runtime Configuration</i> key
             <tt>list-page-size</tt> is greater than zero, the number of WebUI
             list elements will be restricted and it is possible to change to
             the next/previous page to list more elements.
  *  (minor) Change CSS to enhance reading: make <code>line-height</code>
             a little smaller (previous: 1.6, now 1.4) and move list items to
             the left.

<a id="0_0_5"></a>
<h2>Changes for Version 0.0.5 (2020-10-22)</h2>
  *  Application Programming Interface (API) to allow external software to
     retrieve zettel data from the Zettelstore.
  *  Specify boxes, where zettel are stored, via an URL.
  *  Add support for a custom footer.

<a id="0_0_4"></a>
<h2>Changes for Version 0.0.4 (2020-09-11)</h2>
  *  Optional user authentication/authorization.
  *  New sub-commands <tt>file</tt> (use Zettelstore as a command line filter),
     <tt>password</tt> (for authentication), and <tt>config</tt>.


<a id="0_0_3"></a>
<h2>Changes for Version 0.0.3 (2020-08-31)</h2>
  *  Starting Zettelstore has been changed by introducing sub-commands.
     This change is also reflected on the server installation procedures.
  *  Limitations on renaming zettel has been relaxed.

<a id="0_0_2"></a>
<h2>Changes for Version 0.0.2 (2020-08-28)</h2>
  *  Configuration zettel now has ID <tt>00000000000001</tt> (previously:
     <tt>00000000000000</tt>).
  *  The zettel with ID <tt>00000000000000</tt> is no longer shown in any
     zettel list. If you changed the configuration zettel, you should rename it
     manually in its file directory.
  *  Creating a new zettel is now done by cloning an existing zettel.
     To mimic the previous behaviour, a zettel with ID <tt>00000000040001</tt>
     is introduced. You can change it if you need a different template zettel.


<a id="0_0_1"></a>
<h2>Changes for Version 0.0.1 (2020-08-21)</h2>
  *  Initial public release.

Changes to www/download.wiki.

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<title>Download</title>
<h1>Download of Zettelstore Software</h1>
<h2>Foreword</h2>
  *  Zettelstore is free/libre open source software, licensed under EUPL-1.2-or-later.
  *  The software is provided as-is.
  *  There is no guarantee that it will not damage your system.
  *  However, it is in use by the main developer since March 2020 without any damage.
  *  It may be useful for you. It is useful for me.
  *  Take a look at the [https://zettelstore.de/manual/|manual] to know how to start and use it.

<h2>ZIP-ped Executables</h2>
Build: <code>v0.17.0</code> (2024-03-04).

  *  [/uv/zettelstore-0.17.0-linux-amd64.zip|Linux] (amd64)
  *  [/uv/zettelstore-0.17.0-linux-arm.zip|Linux] (arm6, e.g. Raspberry Pi)
  *  [/uv/zettelstore-0.17.0-darwin-arm64.zip|macOS] (arm64)
  *  [/uv/zettelstore-0.17.0-darwin-amd64.zip|macOS] (amd64)
  *  [/uv/zettelstore-0.17.0-windows-amd64.zip|Windows] (amd64)

Unzip the appropriate file, install and execute Zettelstore according to the manual.

<h2>Zettel for the manual</h2>
As a starter, you can download the zettel for the manual
[/uv/manual-0.17.0.zip|here].
Just unzip the contained files and put them into your zettel folder or
configure a file box to read the zettel directly from the ZIP file.











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<title>Download</title>
<h1>Download of Zettelstore Software</h1>
<h2>Foreword</h2>
  *  Zettelstore is free/libre open source software, licensed under EUPL-1.2-or-later.
  *  The software is provided as-is.
  *  There is no guarantee that it will not damage your system.
  *  However, it is in use by the main developer since March 2020 without any damage.
  *  It may be useful for you. It is useful for me.
  *  Take a look at the [https://zettelstore.de/manual/|manual] to know how to start and use it.

<h2>ZIP-ped Executables</h2>
Build: <code>v0.16.0</code> (2023-11-30).

  *  [/uv/zettelstore-0.16.0-linux-amd64.zip|Linux] (amd64)
  *  [/uv/zettelstore-0.16.0-linux-arm.zip|Linux] (arm6, e.g. Raspberry Pi)
  *  [/uv/zettelstore-0.16.0-darwin-arm64.zip|macOS] (arm64)
  *  [/uv/zettelstore-0.16.0-darwin-amd64.zip|macOS] (amd64)
  *  [/uv/zettelstore-0.16.0-windows-amd64.zip|Windows] (amd64)

Unzip the appropriate file, install and execute Zettelstore according to the manual.

<h2>Zettel for the manual</h2>
As a starter, you can download the zettel for the manual
[/uv/manual-0.16.0.zip|here].
Just unzip the contained files and put them into your zettel folder or
configure a file box to read the zettel directly from the ZIP file.

Changes to www/index.wiki.

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     software, which often connects to Zettelstore via its API. Some of the
     software packages may be experimental.
  *  [https://zettelstore.de/sx|Sx] provides an evaluator for symbolic
     expressions, which is unsed for HTML templates and more.

[https://mastodon.social/tags/Zettelstore|Stay tuned]&nbsp;&hellip;
<hr>
<h3>Latest Release: 0.17.0 (2024-03-04)</h3>
  *  [./download.wiki|Download]
  *  [./changes.wiki#0_17|Change summary]
  *  [/timeline?p=v0.17.0&bt=v0.16.0&y=ci|Check-ins for version 0.17.0],
     [/vdiff?to=v0.17.0&from=v0.16.0|content diff]
  *  [/timeline?df=v0.17.0&y=ci|Check-ins derived from the 0.17.0 release],
     [/vdiff?from=v0.17.0&to=trunk|content diff]
  *  [./plan.wiki|Limitations and planned improvements]
  *  [/timeline?t=release|Timeline of all past releases]

<hr>
<h2>Build instructions</h2>
Just install [https://go.dev/dl/|Go] and some Go-based tools. Please read
the [./build.md|instructions] for details.







|

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     software, which often connects to Zettelstore via its API. Some of the
     software packages may be experimental.
  *  [https://zettelstore.de/sx|Sx] provides an evaluator for symbolic
     expressions, which is unsed for HTML templates and more.

[https://mastodon.social/tags/Zettelstore|Stay tuned]&nbsp;&hellip;
<hr>
<h3>Latest Release: 0.16.0 (2023-11-30)</h3>
  *  [./download.wiki|Download]
  *  [./changes.wiki#0_16|Change summary]
  *  [/timeline?p=v0.16.0&bt=v0.15.0&y=ci|Check-ins for version 0.16.0],
     [/vdiff?to=v0.16.0&from=v0.15.0|content diff]
  *  [/timeline?df=v0.16.0&y=ci|Check-ins derived from the 0.16.0 release],
     [/vdiff?from=v0.16.0&to=trunk|content diff]
  *  [./plan.wiki|Limitations and planned improvements]
  *  [/timeline?t=release|Timeline of all past releases]

<hr>
<h2>Build instructions</h2>
Just install [https://go.dev/dl/|Go] and some Go-based tools. Please read
the [./build.md|instructions] for details.

Changes to zettel/content.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package zettel

import (
	"bytes"
	"encoding/base64"
	"errors"
	"io"
	"unicode"
	"unicode/utf8"

	"zettelstore.de/client.fossil/input"
)

// Content is just the content of a zettel.
type Content struct {
	data     []byte
	isBinary bool
}








<
<
<












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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package zettel

import (
	"bytes"
	"encoding/base64"
	"errors"
	"io"
	"unicode"
	"unicode/utf8"

	"zettelstore.de/z/input"
)

// Content is just the content of a zettel.
type Content struct {
	data     []byte
	isBinary bool
}
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119

120
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125
}

// IsBinary returns true if the given data appears to be non-text data.
func IsBinary(data []byte) bool {
	if !utf8.Valid(data) {
		return true
	}
	for i := range len(data) {

		if data[i] == 0 {
			return true
		}
	}
	return false
}







|
>






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}

// IsBinary returns true if the given data appears to be non-text data.
func IsBinary(data []byte) bool {
	if !utf8.Valid(data) {
		return true
	}
	l := len(data)
	for i := 0; i < l; i++ {
		if data[i] == 0 {
			return true
		}
	}
	return false
}

Changes to zettel/content_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package zettel_test

import (
	"testing"









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<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package zettel_test

import (
	"testing"

Changes to zettel/id/digraph.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2023-present Detlef Stern
//-----------------------------------------------------------------------------

package id

import (
	"maps"
	"slices"








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<







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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package id

import (
	"maps"
	"slices"

Changes to zettel/id/digraph_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2023-present Detlef Stern
//-----------------------------------------------------------------------------

package id_test

import (
	"testing"









<
<
<







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8



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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package id_test

import (
	"testing"

Changes to zettel/id/edge.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2023-present Detlef Stern
//-----------------------------------------------------------------------------

package id

import "slices"

// Edge is a pair of to vertices.








<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2023-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package id

import "slices"

// Edge is a pair of to vertices.

Changes to zettel/id/id.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package id provides zettel specific types, constants, and functions about
// zettel identifier.
package id

import (








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package id provides zettel specific types, constants, and functions about
// zettel identifier.
package id

import (
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// Only defined for valid ids.
func (zid Zid) String() string {
	var result [14]byte
	zid.toByteArray(&result)
	return string(result[:])
}

// ZettelID return the zettel identification as a api.ZettelID.
func (zid Zid) ZettelID() api.ZettelID { return api.ZettelID(zid.String()) }

// Bytes converts the zettel identification to a byte slice of 14 digits.
// Only defined for valid ids.
func (zid Zid) Bytes() []byte {
	var result [14]byte
	zid.toByteArray(&result)
	return result[:]
}







<
<
<







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// Only defined for valid ids.
func (zid Zid) String() string {
	var result [14]byte
	zid.toByteArray(&result)
	return string(result[:])
}




// Bytes converts the zettel identification to a byte slice of 14 digits.
// Only defined for valid ids.
func (zid Zid) Bytes() []byte {
	var result [14]byte
	zid.toByteArray(&result)
	return result[:]
}

Changes to zettel/id/id_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package id_test provides unit tests for testing zettel id specific functions.
package id_test

import (
	"testing"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package id_test provides unit tests for testing zettel id specific functions.
package id_test

import (
	"testing"
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	}
}

var sResult string // to disable compiler optimization in loop below

func BenchmarkString(b *testing.B) {
	var s string
	for range b.N {
		s = id.Zid(12345678901200).String()
	}
	sResult = s
}

var bResult []byte // to disable compiler optimization in loop below

func BenchmarkBytes(b *testing.B) {
	var bs []byte
	for range b.N {
		bs = id.Zid(12345678901200).Bytes()
	}
	bResult = bs
}







|









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	}
}

var sResult string // to disable compiler optimization in loop below

func BenchmarkString(b *testing.B) {
	var s string
	for n := 0; n < b.N; n++ {
		s = id.Zid(12345678901200).String()
	}
	sResult = s
}

var bResult []byte // to disable compiler optimization in loop below

func BenchmarkBytes(b *testing.B) {
	var bs []byte
	for n := 0; n < b.N; n++ {
		bs = id.Zid(12345678901200).Bytes()
	}
	bResult = bs
}

Changes to zettel/id/set.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package id

import (
	"maps"
	"strings"








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package id

import (
	"maps"
	"strings"

Changes to zettel/id/set_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package id_test

import (
	"testing"









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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package id_test

import (
	"testing"

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			t.Errorf("%d: %v.Remove(%v) should be %v, but got %v", i, sl1, sl2, tc.exp, got)
		}
	}
}

//	func BenchmarkSet(b *testing.B) {
//		s := id.Set{}
//		for range b.N {
//			s[id.Zid(i)] = true
//		}
//	}
func BenchmarkSet(b *testing.B) {
	s := id.Set{}
	for i := range b.N {
		s[id.Zid(i)] = struct{}{}
	}
}







|





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			t.Errorf("%d: %v.Remove(%v) should be %v, but got %v", i, sl1, sl2, tc.exp, got)
		}
	}
}

//	func BenchmarkSet(b *testing.B) {
//		s := id.Set{}
//		for i := 0; i < b.N; i++ {
//			s[id.Zid(i)] = true
//		}
//	}
func BenchmarkSet(b *testing.B) {
	s := id.Set{}
	for i := 0; i < b.N; i++ {
		s[id.Zid(i)] = struct{}{}
	}
}

Changes to zettel/id/slice.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package id

import (
	"slices"
	"strings"








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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package id

import (
	"slices"
	"strings"

Changes to zettel/id/slice_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------

package id_test

import (
	"testing"









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//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package id_test

import (
	"testing"

Changes to zettel/meta/collection.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2022-present Detlef Stern
//-----------------------------------------------------------------------------

package meta

import "sort"

// Arrangement stores metadata within its categories.








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//-----------------------------------------------------------------------------
// Copyright (c) 2022-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package meta

import "sort"

// Arrangement stores metadata within its categories.

Changes to zettel/meta/meta.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package meta provides the zettel specific type 'meta'.
package meta

import (
	"regexp"
	"sort"
	"strings"
	"unicode"
	"unicode/utf8"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/input"
	"zettelstore.de/client.fossil/maps"
	"zettelstore.de/z/strfun"
	"zettelstore.de/z/zettel/id"
)

type keyUsage int

const (








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package meta provides the zettel specific type 'meta'.
package meta

import (
	"regexp"
	"sort"
	"strings"
	"unicode"
	"unicode/utf8"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/maps"
	"zettelstore.de/z/input"
	"zettelstore.de/z/strfun"
	"zettelstore.de/z/zettel/id"
)

type keyUsage int

const (
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// IsComputed returns true, if metadata is computed and not set by the user.
func (kd *DescriptionKey) IsComputed() bool { return kd.usage >= usageComputed }

// IsProperty returns true, if metadata is a computed property.
func (kd *DescriptionKey) IsProperty() bool { return kd.usage >= usageProperty }




var registeredKeys = make(map[string]*DescriptionKey)

func registerKey(name string, t *DescriptionType, usage keyUsage, inverse string) {
	if _, ok := registeredKeys[name]; ok {
		panic("Key '" + name + "' already defined")
	}
	if inverse != "" {







>
>
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// IsComputed returns true, if metadata is computed and not set by the user.
func (kd *DescriptionKey) IsComputed() bool { return kd.usage >= usageComputed }

// IsProperty returns true, if metadata is a computed property.
func (kd *DescriptionKey) IsProperty() bool { return kd.usage >= usageProperty }

// IsStoredComputed retruns true, if metadata is computed, but also stored.
func (kd *DescriptionKey) IsStoredComputed() bool { return kd.usage == usageComputed }

var registeredKeys = make(map[string]*DescriptionKey)

func registerKey(name string, t *DescriptionType, usage keyUsage, inverse string) {
	if _, ok := registeredKeys[name]; ok {
		panic("Key '" + name + "' already defined")
	}
	if inverse != "" {

Changes to zettel/meta/meta_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package meta

import (
	"strings"
	"testing"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package meta

import (
	"strings"
	"testing"
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	if m2.Equal(m1, true) {
		t.Error("Different ID should differentiate")
	}
}

func pairs2meta(pairs []string) *Meta {
	m := New(testID)
	for i := 0; i < len(pairs); i += 2 {
		m.Set(pairs[i], pairs[i+1])
	}
	return m
}

func TestRemoveNonGraphic(t *testing.T) {
	testCases := []struct {







|







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	if m2.Equal(m1, true) {
		t.Error("Different ID should differentiate")
	}
}

func pairs2meta(pairs []string) *Meta {
	m := New(testID)
	for i := 0; i < len(pairs); i = i + 2 {
		m.Set(pairs[i], pairs[i+1])
	}
	return m
}

func TestRemoveNonGraphic(t *testing.T) {
	testCases := []struct {

Changes to zettel/meta/parse.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package meta

import (
	"strings"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/input"
	"zettelstore.de/client.fossil/maps"
	"zettelstore.de/z/strfun"
	"zettelstore.de/z/zettel/id"
)

// NewFromInput parses the meta data of a zettel.
func NewFromInput(zid id.Zid, inp *input.Input) *Meta {
	if inp.Ch == '-' && inp.PeekN(0) == '-' && inp.PeekN(1) == '-' {








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package meta

import (
	"strings"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/maps"
	"zettelstore.de/z/input"
	"zettelstore.de/z/strfun"
	"zettelstore.de/z/zettel/id"
)

// NewFromInput parses the meta data of a zettel.
func NewFromInput(zid id.Zid, inp *input.Input) *Meta {
	if inp.Ch == '-' && inp.PeekN(0) == '-' && inp.PeekN(1) == '-' {
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	}

	switch Type(key) {
	case TypeTagSet:
		addSet(m, key, strings.ToLower(v), func(s string) bool { return s[0] == '#' && len(s) > 1 })
	case TypeWord:
		m.Set(key, strings.ToLower(v))


	case TypeID:
		if _, err := id.Parse(v); err == nil {
			m.Set(key, v)
		}
	case TypeIDSet:
		addSet(m, key, v, func(s string) bool {
			_, err := id.Parse(s)







>
>







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	}

	switch Type(key) {
	case TypeTagSet:
		addSet(m, key, strings.ToLower(v), func(s string) bool { return s[0] == '#' && len(s) > 1 })
	case TypeWord:
		m.Set(key, strings.ToLower(v))
	case TypeWordSet:
		addSet(m, key, strings.ToLower(v), func(s string) bool { return true })
	case TypeID:
		if _, err := id.Parse(v); err == nil {
			m.Set(key, v)
		}
	case TypeIDSet:
		addSet(m, key, v, func(s string) bool {
			_, err := id.Parse(s)

Changes to zettel/meta/parse_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package meta_test

import (
	"strings"
	"testing"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/client.fossil/input"
	"zettelstore.de/z/zettel/meta"
)

func parseMetaStr(src string) *meta.Meta {
	return meta.NewFromInput(testID, input.NewInput([]byte(src)))
}









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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package meta_test

import (
	"strings"
	"testing"

	"zettelstore.de/client.fossil/api"
	"zettelstore.de/z/input"
	"zettelstore.de/z/zettel/meta"
)

func parseMetaStr(src string) *meta.Meta {
	return meta.NewFromInput(testID, input.NewInput([]byte(src)))
}

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	}
}

func equalPairs(one, two []meta.Pair) bool {
	if len(one) != len(two) {
		return false
	}
	for i := range len(one) {
		if one[i].Key != two[i].Key || one[i].Value != two[i].Value {
			return false
		}
	}
	return true
}








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	}
}

func equalPairs(one, two []meta.Pair) bool {
	if len(one) != len(two) {
		return false
	}
	for i := 0; i < len(one); i++ {
		if one[i].Key != two[i].Key || one[i].Value != two[i].Value {
			return false
		}
	}
	return true
}

Changes to zettel/meta/type.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package meta

import (
	"strconv"
	"strings"








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package meta

import (
	"strconv"
	"strings"
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	TypeIDSet        = registerType(api.MetaIDSet, true)
	TypeNumber       = registerType(api.MetaNumber, false)
	TypeString       = registerType(api.MetaString, false)
	TypeTagSet       = registerType(api.MetaTagSet, true)
	TypeTimestamp    = registerType(api.MetaTimestamp, false)
	TypeURL          = registerType(api.MetaURL, false)
	TypeWord         = registerType(api.MetaWord, false)

	TypeZettelmarkup = registerType(api.MetaZettelmarkup, false)
)

// Type returns a type hint for the given key. If no type hint is specified,
// TypeUnknown is returned.
func (*Meta) Type(key string) *DescriptionType {
	return Type(key)
}

// Some constants for key suffixes that determine a type.
const (
	SuffixKeyRole = "-role"
	SuffixKeyURL  = "-url"
)

var (
	cachedTypedKeys = make(map[string]*DescriptionType)
	mxTypedKey      sync.RWMutex
	suffixTypes     = map[string]*DescriptionType{
		"-date":       TypeTimestamp,
		"-number":     TypeNumber,
		SuffixKeyRole: TypeWord,

		"-time":       TypeTimestamp,
		"-title":      TypeZettelmarkup,
		SuffixKeyURL:  TypeURL,
		"-zettel":     TypeID,
		"-zid":        TypeID,
		"-zids":       TypeIDSet,
	}
)

// Type returns a type hint for the given key. If no type hint is specified,
// TypeEmpty is returned.
func Type(key string) *DescriptionType {
	if k, ok := registeredKeys[key]; ok {







>









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	TypeIDSet        = registerType(api.MetaIDSet, true)
	TypeNumber       = registerType(api.MetaNumber, false)
	TypeString       = registerType(api.MetaString, false)
	TypeTagSet       = registerType(api.MetaTagSet, true)
	TypeTimestamp    = registerType(api.MetaTimestamp, false)
	TypeURL          = registerType(api.MetaURL, false)
	TypeWord         = registerType(api.MetaWord, false)
	TypeWordSet      = registerType(api.MetaWordSet, true)
	TypeZettelmarkup = registerType(api.MetaZettelmarkup, false)
)

// Type returns a type hint for the given key. If no type hint is specified,
// TypeUnknown is returned.
func (*Meta) Type(key string) *DescriptionType {
	return Type(key)
}







var (
	cachedTypedKeys = make(map[string]*DescriptionType)
	mxTypedKey      sync.RWMutex
	suffixTypes     = map[string]*DescriptionType{
		"-date":   TypeTimestamp,
		"-number": TypeNumber,
		"-role":   TypeWord,
		"-set":    TypeWordSet,
		"-time":   TypeTimestamp,
		"-title":  TypeZettelmarkup,
		"-url":    TypeURL,
		"-zettel": TypeID,
		"-zid":    TypeID,
		"-zids":   TypeIDSet,
	}
)

// Type returns a type hint for the given key. If no type hint is specified,
// TypeEmpty is returned.
func Type(key string) *DescriptionType {
	if k, ok := registeredKeys[key]; ok {

Changes to zettel/meta/type_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package meta_test

import (
	"strconv"
	"testing"








<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package meta_test

import (
	"strconv"
	"testing"

Changes to zettel/meta/values.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package meta

import (
	"fmt"









<
<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package meta

import (
	"fmt"

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	SyntaxPNG      = "png"
	SyntaxSVG      = api.ValueSyntaxSVG
	SyntaxSxn      = api.ValueSyntaxSxn
	SyntaxText     = api.ValueSyntaxText
	SyntaxTxt      = "txt"
	SyntaxWebp     = "webp"
	SyntaxZmk      = api.ValueSyntaxZmk

	DefaultSyntax = SyntaxPlain
)

// Visibility enumerates the variations of the 'visibility' meta key.
type Visibility int

// Supported values for visibility.
const (







<
<







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	SyntaxPNG      = "png"
	SyntaxSVG      = api.ValueSyntaxSVG
	SyntaxSxn      = api.ValueSyntaxSxn
	SyntaxText     = api.ValueSyntaxText
	SyntaxTxt      = "txt"
	SyntaxWebp     = "webp"
	SyntaxZmk      = api.ValueSyntaxZmk


)

// Visibility enumerates the variations of the 'visibility' meta key.
type Visibility int

// Supported values for visibility.
const (

Changes to zettel/meta/write.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package meta

import "io"

// Write writes metadata to a writer, excluding computed and propery values.








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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package meta

import "io"

// Write writes metadata to a writer, excluding computed and propery values.

Changes to zettel/meta/write_test.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

package meta_test

import (
	"strings"
	"testing"








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<
<







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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

package meta_test

import (
	"strings"
	"testing"

Changes to zettel/zettel.go.

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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2020-present Detlef Stern
//-----------------------------------------------------------------------------

// Package zettel provides specific types, constants, and functions for zettel.
package zettel

import "zettelstore.de/z/zettel/meta"









<
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//-----------------------------------------------------------------------------
// Copyright (c) 2020-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.



//-----------------------------------------------------------------------------

// Package zettel provides specific types, constants, and functions for zettel.
package zettel

import "zettelstore.de/z/zettel/meta"