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Avoid calling bytes.Split() in appendLanguageAttr

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This avoids some allocs.
This commit is contained in:
Vytautas Saltenis 2016-10-29 12:09:34 +03:00
parent 9357a8f949
commit 22a3e5b744
1 changed files with 7 additions and 4 deletions
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11
html.go
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@ -307,11 +307,14 @@ func isSmartypantable(node *Node) bool {
}
func appendLanguageAttr(attrs []string, info []byte) []string {
infoWords := bytes.Split(info, []byte("\t "))
if len(infoWords) > 0 && len(infoWords[0]) > 0 {
attrs = append(attrs, fmt.Sprintf("class=\"language-%s\"", infoWords[0]))
if len(info) == 0 {
return attrs
}
return attrs
endOfLang := bytes.IndexAny(info, "\t ")
if endOfLang < 0 {
endOfLang = len(info)
}
return append(attrs, fmt.Sprintf("class=\"language-%s\"", info[:endOfLang]))
}
func (r *HTMLRenderer) tag(w io.Writer, name []byte, attrs []string) {