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Add code block highlight to orgmode back (#14222)

Fix missed orgmode code block hightlight

Co-authored-by: zeripath <art27@cantab.net>
master
Lunny Xiao 1 year ago
committed by GitHub
parent
commit
f2babf3346
No known key found for this signature in database GPG Key ID: 4AEE18F83AFDEB23
  1. 44
      modules/markup/orgmode/orgmode.go

44
modules/markup/orgmode/orgmode.go

@ -11,9 +11,12 @@ import (
"io"
"strings"
"code.gitea.io/gitea/modules/highlight"
"code.gitea.io/gitea/modules/markup"
"code.gitea.io/gitea/modules/util"
"github.com/alecthomas/chroma"
"github.com/alecthomas/chroma/lexers"
"github.com/niklasfasching/go-org/org"
)
@ -41,6 +44,47 @@ func (Renderer) Extensions() []string {
// Render renders orgmode rawbytes to HTML
func Render(ctx *markup.RenderContext, input io.Reader, output io.Writer) error {
htmlWriter := org.NewHTMLWriter()
htmlWriter.HighlightCodeBlock = func(source, lang string, inline bool) string {
var w strings.Builder
if _, err := w.WriteString(`<pre>`); err != nil {
return ""
}
lexer := lexers.Get(lang)
if lexer == nil && lang == "" {
lexer = lexers.Analyse(source)
if lexer == nil {
lexer = lexers.Fallback
}
lang = strings.ToLower(lexer.Config().Name)
}
if lexer == nil {
// include language-x class as part of commonmark spec
if _, err := w.WriteString(`<code class="chroma language-` + string(lang) + `">`); err != nil {
return ""
}
if _, err := w.WriteString(html.EscapeString(source)); err != nil {
return ""
}
} else {
// include language-x class as part of commonmark spec
if _, err := w.WriteString(`<code class="chroma language-` + string(lang) + `">`); err != nil {
return ""
}
lexer = chroma.Coalesce(lexer)
if _, err := w.WriteString(highlight.Code(lexer.Config().Filenames[0], source)); err != nil {
return ""
}
}
if _, err := w.WriteString("</code></pre>"); err != nil {
return ""
}
return w.String()
}
w := &Writer{
HTMLWriter: htmlWriter,

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