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Insert code tag for server-side syntax highlighting

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Inserts a code tag into Pygments output with the language-info that is present when using client-side highlighting (useful for CSS hooks)

```html
<code class="language-go" data-lang="go">
```

closes #1490
This commit is contained in:
Nathan Youngman 2015-10-14 15:10:50 -06:00 committed by Bjørn Erik Pedersen
parent 6a3aced15a
commit ec9c691216
2 changed files with 12 additions and 3 deletions
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2
helpers/content_renderer_test.go
View file

@ -38,7 +38,7 @@ func TestCodeFence(t *testing.T) {
input, expected string input, expected string
} }
data := []test{ data := []test{
{true, "<html></html>", "<div class=\"highlight\"><pre><span class=\"nt\">&lt;html&gt;&lt;/html&gt;</span>\n</pre></div>\n"}, {true, "<html></html>", "<div class=\"highlight\"><pre><code class=\"language-html\" data-lang=\"html\"><span class=\"nt\">&lt;html&gt;&lt;/html&gt;</span>\n</code></pre></div>\n"},
{false, "<html></html>", "<pre><code class=\"language-html\">&lt;html&gt;&lt;/html&gt;</code></pre>\n"}, {false, "<html></html>", "<pre><code class=\"language-html\">&lt;html&gt;&lt;/html&gt;</code></pre>\n"},
} }

13
helpers/pygments.go
View file

@ -111,14 +111,23 @@ func Highlight(code, lang, optsStr string) string {
return code return code
} }
str := out.String()
// inject code tag into Pygments output
if lang != "" && strings.Contains(str, "<pre>") {
codeTag := fmt.Sprintf(`<pre><code class="language-%s" data-lang="%s">`, lang, lang)
str = strings.Replace(str, "<pre>", codeTag, 1)
str = strings.Replace(str, "</pre>", "</code></pre>", 1)
}
if cachefile != "" { if cachefile != "" {
// Write cache file // Write cache file
if err := WriteToDisk(cachefile, bytes.NewReader(out.Bytes()), fs); err != nil { if err := WriteToDisk(cachefile, strings.NewReader(str), fs); err != nil {
jww.ERROR.Print(stderr.String()) jww.ERROR.Print(stderr.String())
} }
} }
return out.String() return str
} }
var pygmentsKeywords = make(map[string]bool) var pygmentsKeywords = make(map[string]bool)