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markup/asciidoc: Add support for .TableOfContents

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Fill the .TableOfContents template variable when writing Asciidoc content.
This is done by letting Asciidoc render its TOC as HTML, then extract this
HTML rendered TOC, parse it into a tableofcontents.Root and finally remove
it from the HTML content.
This aims to stay in the logic that the Asciidoc parsing is entirely done
by the external helper.

See #1687
This commit is contained in:
Nicolas Piganeau
2020-08-24 19:23:16 +02:00
committed by Bjørn Erik Pedersen
parent 19ef27b98e
commit 3ba7c92530
3 changed files with 189 additions and 2 deletions
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35
markup/asciidocext/convert_test.go
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@@ -270,3 +270,38 @@ func TestConvert(t *testing.T) {
c.Assert(err, qt.IsNil)
c.Assert(string(b.Bytes()), qt.Equals, "<div class=\"paragraph\">\n<p>testContent</p>\n</div>\n")
}
func TestTableOfContents(t *testing.T) {
if !Supports() {
t.Skip("asciidoc/asciidoctor not installed")
}
c := qt.New(t)
p, err := Provider.New(converter.ProviderConfig{Logger: loggers.NewErrorLogger()})
c.Assert(err, qt.IsNil)
conv, err := p.New(converter.DocumentContext{})
c.Assert(err, qt.IsNil)
b, err := conv.Convert(converter.RenderContext{Src: []byte(`:toc: macro
:toclevels: 4
toc::[]
=== Introduction
== Section 1
=== Section 1.1
==== Section 1.1.1
=== Section 1.2
testContent
== Section 2
`)})
c.Assert(err, qt.IsNil)
toc, ok := b.(converter.TableOfContentsProvider)
c.Assert(ok, qt.Equals, true)
root := toc.TableOfContents()
c.Assert(root.ToHTML(2, 4, false), qt.Equals, "<nav id=\"TableOfContents\">\n <ul>\n <li><a href=\"#_introduction\">Introduction</a></li>\n <li><a href=\"#_section_1\">Section 1</a>\n <ul>\n <li><a href=\"#_section_1_1\">Section 1.1</a>\n <ul>\n <li><a href=\"#_section_1_1_1\">Section 1.1.1</a></li>\n </ul>\n </li>\n <li><a href=\"#_section_1_2\">Section 1.2</a></li>\n </ul>\n </li>\n <li><a href=\"#_section_2\">Section 2</a></li>\n </ul>\n</nav>")
c.Assert(root.ToHTML(2, 3, false), qt.Equals, "<nav id=\"TableOfContents\">\n <ul>\n <li><a href=\"#_introduction\">Introduction</a></li>\n <li><a href=\"#_section_1\">Section 1</a>\n <ul>\n <li><a href=\"#_section_1_1\">Section 1.1</a></li>\n <li><a href=\"#_section_1_2\">Section 1.2</a></li>\n </ul>\n </li>\n <li><a href=\"#_section_2\">Section 2</a></li>\n </ul>\n</nav>")
}