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fix: use a class with line links when requested (#692)

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Fixes #683
This commit is contained in:
Alec Thomas
2022-11-01 17:28:30 +11:00
committed by GitHub
parent 5e27ea4aaf
commit d0e811c0ef
8 changed files with 126 additions and 117 deletions
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13
formatters/html/html.go
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@@ -100,9 +100,9 @@ func LineNumbersInTable(b bool) Option {
}
}
// LinkableLineNumbers decorates the line numbers HTML elements with an "id"
// WithLinkableLineNumbers decorates the line numbers HTML elements with an "id"
// attribute so they can be linked.
func LinkableLineNumbers(b bool, prefix string) Option {
func WithLinkableLineNumbers(b bool, prefix string) Option {
return func(f *Formatter) {
f.linkableLineNumbers = b
f.lineNumbersIDPrefix = prefix
@@ -262,7 +262,7 @@ func (f *Formatter) writeHTML(w io.Writer, style *chroma.Style, tokens []chroma.
fmt.Fprintf(w, "<span%s>", f.styleAttr(css, chroma.LineHighlight))
}
fmt.Fprintf(w, "<span%s%s>%s\n</span>", f.styleAttr(css, chroma.LineNumbersTable), f.lineIDAttribute(line), f.lineTitleWithLinkIfNeeded(lineDigits, line))
fmt.Fprintf(w, "<span%s%s>%s\n</span>", f.styleAttr(css, chroma.LineNumbersTable), f.lineIDAttribute(line), f.lineTitleWithLinkIfNeeded(css, lineDigits, line))
if highlight {
fmt.Fprintf(w, "</span>")
@@ -302,7 +302,7 @@ func (f *Formatter) writeHTML(w io.Writer, style *chroma.Style, tokens []chroma.
// Line number
if f.lineNumbers && !wrapInTable {
fmt.Fprintf(w, "<span%s%s>%s</span>", f.styleAttr(css, chroma.LineNumbers), f.lineIDAttribute(line), f.lineTitleWithLinkIfNeeded(lineDigits, line))
fmt.Fprintf(w, "<span%s%s>%s</span>", f.styleAttr(css, chroma.LineNumbers), f.lineIDAttribute(line), f.lineTitleWithLinkIfNeeded(css, lineDigits, line))
}
fmt.Fprintf(w, `<span%s>`, f.styleAttr(css, chroma.CodeLine))
@@ -345,12 +345,12 @@ func (f *Formatter) lineIDAttribute(line int) string {
return fmt.Sprintf(" id=\"%s\"", f.lineID(line))
}
func (f *Formatter) lineTitleWithLinkIfNeeded(lineDigits, line int) string {
func (f *Formatter) lineTitleWithLinkIfNeeded(css map[chroma.TokenType]string, lineDigits, line int) string {
title := fmt.Sprintf("%*d", lineDigits, line)
if !f.linkableLineNumbers {
return title
}
return fmt.Sprintf("<a style=\"outline: none; text-decoration:none; color:inherit\" href=\"#%s\">%s</a>", f.lineID(line), title)
return fmt.Sprintf("<a%s href=\"#%s\">%s</a>", f.styleAttr(css, chroma.LineLink), f.lineID(line), title)
}
func (f *Formatter) lineID(line int) string {
@@ -520,6 +520,7 @@ func (f *Formatter) styleToCSS(style *chroma.Style) map[chroma.TokenType]string
classes[chroma.LineNumbersTable] = lineNumbersStyle + classes[chroma.LineNumbersTable]
classes[chroma.LineTable] = "border-spacing: 0; padding: 0; margin: 0; border: 0;" + classes[chroma.LineTable]
classes[chroma.LineTableTD] = "vertical-align: top; padding: 0; margin: 0; border: 0;" + classes[chroma.LineTableTD]
classes[chroma.LineLink] = "outline: none; text-decoration:none; color:inherit" + classes[chroma.LineLink]
return classes
}