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// Copyright 2015 The Gogs Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package highlight
import (
"path"
"strings"
"code.gitea.io/gitea/modules/setting"
)
var (
// File name should ignore highlight.
ignoreFileNames = map[string]bool{
"license": true,
"copying": true,
}
// File names that are representing highlight classes.
highlightFileNames = map[string]bool{
"dockerfile": true,
"makefile": true,
}
// Extensions that are same as highlight classes.
highlightExts = map[string]bool{
".arm": true,
".as": true,
".sh": true,
".cs": true,
".cpp": true,
".c": true,
".css": true,
".cmake": true,
".bat": true,
".dart": true,
".patch": true,
".elixir": true,
".erlang": true,
".go": true,
".html": true,
".xml": true,
".hs": true,
".ini": true,
".json": true,
".java": true,
".js": true,
".less": true,
".lua": true,
".php": true,
".py": true,
".rb": true,
".scss": true,
".sql": true,
".scala": true,
".swift": true,
".ts": true,
".vb": true,
}
// Extensions that are not same as highlight classes.
highlightMapping = map[string]string{}
)
// NewContext loads highlight map
func NewContext() {
keys := setting.Cfg.Section("highlight.mapping").Keys()
for i := range keys {
highlightMapping[keys[i].Name()] = keys[i].Value()
}
}
// FileNameToHighlightClass returns the best match for highlight class name
// based on the rule of highlight.js.
func FileNameToHighlightClass(fname string) string {
fname = strings.ToLower(fname)
if ignoreFileNames[fname] {
return "nohighlight"
}
if highlightFileNames[fname] {
return fname
}
ext := path.Ext(fname)
if highlightExts[ext] {
return ext[1:]
}
name, ok := highlightMapping[ext]
if ok {
return name
}
return ""
}
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