markup: Handle attribute lists in code fences

Fixes #8278
This commit is contained in:
Bjørn Erik Pedersen 2021-02-23 18:04:05 +01:00
parent cd0c5d7ef3
commit aed7df62a8
3 changed files with 78 additions and 6 deletions

View file

@ -22,6 +22,7 @@ import (
"runtime/debug"
"github.com/gohugoio/hugo/markup/goldmark/internal/extensions/attributes"
"github.com/yuin/goldmark/ast"
"github.com/gohugoio/hugo/identity"
@ -321,7 +322,28 @@ func newHighlighting(cfg highlight.Config) goldmark.Extender {
highlight.WriteCodeTag(w, language)
return
}
w.WriteString(`<div class="highlight">`)
w.WriteString(`<div class="highlight`)
var attributes []ast.Attribute
if ctx.Attributes() != nil {
attributes = ctx.Attributes().All()
}
if attributes != nil {
class, found := ctx.Attributes().GetString("class")
if found {
w.WriteString(" ")
w.Write(util.EscapeHTML(class.([]byte)))
}
_, _ = w.WriteString("\"")
renderAttributes(w, true, attributes...)
} else {
_, _ = w.WriteString("\"")
}
w.WriteString(">")
return
}

View file

@ -226,6 +226,25 @@ func TestConvertAttributes(t *testing.T) {
"> foo\n> bar\n{#id .className attrName=attrValue class=\"class1 class2\"}\n",
"<blockquote id=\"id\" class=\"className class1 class2\"><p>foo\nbar</p>\n</blockquote>\n",
},
/*{
// TODO(bep) this needs an upstream fix, see https://github.com/yuin/goldmark/issues/195
"Code block, CodeFences=false",
func(conf *markup_config.Config) {
withBlockAttributes(conf)
conf.Highlight.CodeFences = false
},
"```bash\necho 'foo';\n```\n{.myclass}",
"TODO",
},*/
{
"Code block, CodeFences=true",
func(conf *markup_config.Config) {
withBlockAttributes(conf)
conf.Highlight.CodeFences = true
},
"```bash\necho 'foo';\n````\n{.myclass id=\"myid\"}",
"<div class=\"highlight myclass\" id=\"myid\"><pre style",
},
{
"Paragraph",
withBlockAttributes,

View file

@ -14,8 +14,11 @@
package goldmark
import (
"bytes"
"sync"
"github.com/spf13/cast"
"github.com/gohugoio/hugo/markup/converter/hooks"
"github.com/yuin/goldmark"
@ -135,13 +138,41 @@ func (r *hookedRenderer) RegisterFuncs(reg renderer.NodeRendererFuncRegisterer)
reg.Register(ast.KindHeading, r.renderHeading)
}
// https://github.com/yuin/goldmark/blob/b611cd333a492416b56aa8d94b04a67bf0096ab2/renderer/html/html.go#L404
func (r *hookedRenderer) RenderAttributes(w util.BufWriter, node ast.Node) {
for _, attr := range node.Attributes() {
func (r *hookedRenderer) renderAttributesForNode(w util.BufWriter, node ast.Node) {
renderAttributes(w, false, node.Attributes()...)
}
var (
// Attributes with special meaning that does not make sense to render in HTML.
attributeExcludes = map[string]bool{
"linenos": true,
"hl_lines": true,
"linenostart": true,
}
)
func renderAttributes(w util.BufWriter, skipClass bool, attributes ...ast.Attribute) {
for _, attr := range attributes {
if skipClass && bytes.Equal(attr.Name, []byte("class")) {
continue
}
if attributeExcludes[string(attr.Name)] {
continue
}
_, _ = w.WriteString(" ")
_, _ = w.Write(attr.Name)
_, _ = w.WriteString(`="`)
_, _ = w.Write(util.EscapeHTML(attr.Value.([]byte)))
switch v := attr.Value.(type) {
case []byte:
_, _ = w.Write(util.EscapeHTML(v))
default:
w.WriteString(cast.ToString(v))
}
_ = w.WriteByte('"')
}
}
@ -282,7 +313,7 @@ func (r *hookedRenderer) renderDefaultHeading(w util.BufWriter, source []byte, n
_, _ = w.WriteString("<h")
_ = w.WriteByte("0123456"[n.Level])
if n.Attributes() != nil {
r.RenderAttributes(w, node)
r.renderAttributesForNode(w, node)
}
_ = w.WriteByte('>')
} else {