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forgejo/modules/markup/markdown/toc.go
zeripath ac88f21ecc
Automatically render wiki TOC (#19873)
Automatically add sidebar in the wiki view containing a TOC for the wiki page.
Make the TOC collapsable

Signed-off-by: Andrew Thornton <art27@cantab.net>
2022-06-08 16:59:16 +08:00

51 lines
1.2 KiB
Go

// Copyright 2020 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package markdown
import (
"fmt"
"net/url"
"code.gitea.io/gitea/modules/markup"
"code.gitea.io/gitea/modules/translation/i18n"
"github.com/yuin/goldmark/ast"
)
func createTOCNode(toc []markup.Header, lang string) ast.Node {
details := NewDetails()
summary := NewSummary()
summary.AppendChild(summary, ast.NewString([]byte(i18n.Tr(lang, "toc"))))
details.AppendChild(details, summary)
ul := ast.NewList('-')
details.AppendChild(details, ul)
currentLevel := 6
for _, header := range toc {
if header.Level < currentLevel {
currentLevel = header.Level
}
}
for _, header := range toc {
for currentLevel > header.Level {
ul = ul.Parent().(*ast.List)
currentLevel--
}
for currentLevel < header.Level {
newL := ast.NewList('-')
ul.AppendChild(ul, newL)
currentLevel++
ul = newL
}
li := ast.NewListItem(currentLevel * 2)
a := ast.NewLink()
a.Destination = []byte(fmt.Sprintf("#%s", url.PathEscape(header.ID)))
a.AppendChild(a, ast.NewString([]byte(header.Text)))
li.AppendChild(li, a)
ul.AppendChild(ul, li)
}
return details
}