gitea/modules/highlight/highlight.go

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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.
// See hljs.listLanguages() for list of language names.
highlightExts = map[string]struct{}{
".applescript": {},
".arm": {},
".as": {},
".bash": {},
".bat": {},
".c": {},
".cmake": {},
".cpp": {},
".cs": {},
".css": {},
".dart": {},
".diff": {},
".django": {},
".go": {},
".gradle": {},
".groovy": {},
".haml": {},
".handlebars": {},
".html": {},
".ini": {},
".java": {},
".json": {},
".less": {},
".lua": {},
".php": {},
".scala": {},
".scss": {},
".sql": {},
".swift": {},
".ts": {},
".xml": {},
".yaml": {},
}
// Extensions that are not same as highlight classes.
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highlightMapping = map[string]string{
".ahk": "autohotkey",
".crmsh": "crmsh",
".dash": "shell",
".erl": "erlang",
".escript": "erlang",
".ex": "elixir",
".exs": "elixir",
".f": "fortran",
".f77": "fortran",
".f90": "fortran",
".f95": "fortran",
".feature": "gherkin",
".fish": "shell",
".for": "fortran",
".hbs": "handlebars",
".hs": "haskell",
".hx": "haxe",
".js": "javascript",
".jsx": "javascript",
".ksh": "shell",
".kt": "kotlin",
".l": "ocaml",
".ls": "livescript",
".md": "markdown",
".mjs": "javascript",
".mli": "ocaml",
".mll": "ocaml",
".mly": "ocaml",
".patch": "diff",
".pl": "perl",
".pm": "perl",
".ps1": "powershell",
".psd1": "powershell",
".psm1": "powershell",
".py": "python",
".pyw": "python",
".rb": "ruby",
".rs": "rust",
".scpt": "applescript",
".scptd": "applescript",
".sh": "bash",
".tcsh": "shell",
".ts": "typescript",
".tsx": "typescript",
".txt": "plaintext",
".vb": "vbnet",
".vbs": "vbscript",
".yml": "yaml",
".zsh": "shell",
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}
)
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// 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 ""
}