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Fix goldmark toc rendering

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Previously gordmark-based TOC renderes only `KindText` and `KindString`

This commit expands target node with Goldmark's renderer

I am not sure of what are expected results as TOC contents in some (rare) cases
but Blackfriday's behaviours are fundamentally respected.

For example,
- image `[image text](link)` is rendered as `<img>` tag
- GFM AutoLink `gohugo.io` is rendered as text

* Render AutoLink as <a> tag as Blackfriday does

Fixes #6736
Fixes #6809
This commit is contained in:
satotake 2020-02-23 02:06:30 +09:00 committed by GitHub
parent a524124beb
commit ca68abf0bc
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
4 changed files with 99 additions and 15 deletions
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2
hugolib/shortcode_test.go
View file

@ -1136,7 +1136,7 @@ TOC: {{ .TableOfContents }}
"NEW INLINE: W1: [1 2 3 4 5]",
"INLINE IN INNER: Inner: W2: [1 2 3 4]",
"REUSED INLINE IN INNER: Inner: W1: [1 2 3]",
`<li><a href="#markdown-delimiter-hugo-rocks">MARKDOWN DELIMITER: Hugo Rocks!</a></li>`,
`<li><a href="#markdown-delimiter-hugo-rocks">MARKDOWN DELIMITER: <strong>Hugo Rocks!</strong></a></li>`,
}
if enableInlineShortcodes {

18
markup/goldmark/convert.go
View file

@ -81,15 +81,7 @@ func (c *goldmarkConverter) SanitizeAnchorName(s string) string {
func newMarkdown(pcfg converter.ProviderConfig) goldmark.Markdown {
mcfg := pcfg.MarkupConfig
cfg := pcfg.MarkupConfig.Goldmark
var (
extensions = []goldmark.Extender{
newLinks(),
newTocExtension(),
}
rendererOptions []renderer.Option
parserOptions []parser.Option
)
var rendererOptions []renderer.Option
if cfg.Renderer.HardWraps {
rendererOptions = append(rendererOptions, html.WithHardWraps())
@ -103,6 +95,14 @@ func newMarkdown(pcfg converter.ProviderConfig) goldmark.Markdown {
rendererOptions = append(rendererOptions, html.WithUnsafe())
}
var (
extensions = []goldmark.Extender{
newLinks(),
newTocExtension(rendererOptions),
}
parserOptions []parser.Option
)
if mcfg.Highlight.CodeFences {
extensions = append(extensions, newHighlighting(mcfg.Highlight))
}

37
markup/goldmark/toc.go
View file

@ -21,6 +21,7 @@ import (
"github.com/yuin/goldmark"
"github.com/yuin/goldmark/ast"
"github.com/yuin/goldmark/parser"
"github.com/yuin/goldmark/renderer"
"github.com/yuin/goldmark/text"
"github.com/yuin/goldmark/util"
)
@ -31,6 +32,7 @@ var (
)
type tocTransformer struct {
r renderer.Renderer
}
func (t *tocTransformer) Transform(n *ast.Document, reader text.Reader, pc parser.Context) {
@ -79,8 +81,26 @@ func (t *tocTransformer) Transform(n *ast.Document, reader text.Reader, pc parse
if found {
header.ID = string(id.([]byte))
}
case ast.KindText, ast.KindString:
headingText.Write(n.Text(reader.Source()))
case
ast.KindCodeSpan,
ast.KindLink,
ast.KindImage,
ast.KindEmphasis:
err := t.r.Render(&headingText, reader.Source(), n)
if err != nil {
return s, err
}
return ast.WalkSkipChildren, nil
case
ast.KindAutoLink,
ast.KindRawHTML,
ast.KindText,
ast.KindString:
err := t.r.Render(&headingText, reader.Source(), n)
if err != nil {
return s, err
}
}
return s, nil
@ -90,12 +110,19 @@ func (t *tocTransformer) Transform(n *ast.Document, reader text.Reader, pc parse
}
type tocExtension struct {
options []renderer.Option
}
func newTocExtension() goldmark.Extender {
return &tocExtension{}
func newTocExtension(options []renderer.Option) goldmark.Extender {
return &tocExtension{
options: options,
}
}
func (e *tocExtension) Extend(m goldmark.Markdown) {
m.Parser().AddOptions(parser.WithASTTransformers(util.Prioritized(&tocTransformer{}, 10)))
r := goldmark.DefaultRenderer()
r.AddOptions(e.options...)
m.Parser().AddOptions(parser.WithASTTransformers(util.Prioritized(&tocTransformer{
r: r,
}, 10)))
}

57
markup/goldmark/toc_test.go
View file

@ -15,6 +15,7 @@
package goldmark
import (
"strings"
"testing"
"github.com/gohugoio/hugo/markup/markup_config"
@ -74,3 +75,59 @@ And then some.
</ul>
</nav>`, qt.Commentf(got))
}
func TestEscapeToc(t *testing.T) {
c := qt.New(t)
defaultConfig := markup_config.Default
safeConfig := defaultConfig
unsafeConfig := defaultConfig
safeConfig.Goldmark.Renderer.Unsafe = false
unsafeConfig.Goldmark.Renderer.Unsafe = true
safeP, _ := Provider.New(
converter.ProviderConfig{
MarkupConfig: safeConfig,
Logger: loggers.NewErrorLogger(),
})
unsafeP, _ := Provider.New(
converter.ProviderConfig{
MarkupConfig: unsafeConfig,
Logger: loggers.NewErrorLogger(),
})
safeConv, _ := safeP.New(converter.DocumentContext{})
unsafeConv, _ := unsafeP.New(converter.DocumentContext{})
content := strings.Join([]string{
"# A < B & C > D",
"# A < B & C > D <div>foo</div>",
"# *EMPHASIS*",
"# `echo codeblock`",
}, "\n")
// content := ""
b, err := safeConv.Convert(converter.RenderContext{Src: []byte(content), RenderTOC: true})
c.Assert(err, qt.IsNil)
got := b.(converter.TableOfContentsProvider).TableOfContents().ToHTML(1, 2, false)
c.Assert(got, qt.Equals, `<nav id="TableOfContents">
<ul>
<li><a href="#a--b--c--d">A &lt; B &amp; C &gt; D</a></li>
<li><a href="#a--b--c--d-divfoodiv">A &lt; B &amp; C &gt; D <!-- raw HTML omitted -->foo<!-- raw HTML omitted --></a></li>
<li><a href="#emphasis"><em>EMPHASIS</em></a></li>
<li><a href="#echo-codeblock"><code>echo codeblock</code></a></li>
</ul>
</nav>`, qt.Commentf(got))
b, err = unsafeConv.Convert(converter.RenderContext{Src: []byte(content), RenderTOC: true})
c.Assert(err, qt.IsNil)
got = b.(converter.TableOfContentsProvider).TableOfContents().ToHTML(1, 2, false)
c.Assert(got, qt.Equals, `<nav id="TableOfContents">
<ul>
<li><a href="#a--b--c--d">A &lt; B &amp; C &gt; D</a></li>
<li><a href="#a--b--c--d-divfoodiv">A &lt; B &amp; C &gt; D <div>foo</div></a></li>
<li><a href="#emphasis"><em>EMPHASIS</em></a></li>
<li><a href="#echo-codeblock"><code>echo codeblock</code></a></li>
</ul>
</nav>`, qt.Commentf(got))
}