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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]string{
"dockerfile": "dockerfile",
"makefile": "makefile",
"gnumakefile": "makefile",
"cmakelists.txt": "cmake",
}
// Extensions that are same as highlight classes.
highlightExts = map[string]struct{}{
".arm": {},
".as": {},
".sh": {},
".cs": {},
".cpp": {},
".c": {},
".css": {},
".cmake": {},
".bat": {},
".dart": {},
".patch": {},
".erl": {},
".go": {},
".html": {},
".xml": {},
".hs": {},
".ini": {},
".json": {},
".java": {},
".js": {},
".less": {},
".lua": {},
".php": {},
".py": {},
".rb": {},
".rs": {},
".scss": {},
".sql": {},
".scala": {},
".swift": {},
".ts": {},
".vb": {},
".yml": {},
".yaml": {},
}
// Extensions that are not same as highlight classes.
highlightMapping = map[string]string{
".txt": "nohighlight",
".escript": "erlang",
".ex": "elixir",
".exs": "elixir",
}
)
// 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 name, ok := highlightFileNames[fname]; ok {
return name
}
ext := path.Ext(fname)
if _, ok := highlightExts[ext]; ok {
return ext[1:]
}
name, ok := highlightMapping[ext]
if ok {
return name
}
return ""
}
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