-
-
Notifications
You must be signed in to change notification settings - Fork 0
/
markup.go
123 lines (104 loc) · 3.72 KB
/
markup.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
// Copyright 2017 The Gitea 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 markup
import (
"path/filepath"
"strings"
"code.gitea.io/gitea/modules/log"
)
// Init initialize regexps for markdown parsing
func Init() {
getIssueFullPattern()
NewSanitizer()
}
// Parser defines an interface for parsering markup file to HTML
type Parser interface {
Name() string // markup format name
Extensions() []string
Render(rawBytes []byte, urlPrefix string, metas map[string]string, isWiki bool) []byte
}
var (
extParsers = make(map[string]Parser)
parsers = make(map[string]Parser)
)
// RegisterParser registers a new markup file parser
func RegisterParser(parser Parser) {
parsers[parser.Name()] = parser
for _, ext := range parser.Extensions() {
extParsers[strings.ToLower(ext)] = parser
}
}
// GetParserByFileName get parser by filename
func GetParserByFileName(filename string) Parser {
extension := strings.ToLower(filepath.Ext(filename))
return extParsers[extension]
}
// GetParserByType returns a parser according type
func GetParserByType(tp string) Parser {
return parsers[tp]
}
// Render renders markup file to HTML with all specific handling stuff.
func Render(filename string, rawBytes []byte, urlPrefix string, metas map[string]string) []byte {
return renderFile(filename, rawBytes, urlPrefix, metas, false)
}
// RenderByType renders markup to HTML with special links and returns string type.
func RenderByType(tp string, rawBytes []byte, urlPrefix string, metas map[string]string) []byte {
return renderByType(tp, rawBytes, urlPrefix, metas, false)
}
// RenderString renders Markdown to HTML with special links and returns string type.
func RenderString(filename string, raw, urlPrefix string, metas map[string]string) string {
return string(renderFile(filename, []byte(raw), urlPrefix, metas, false))
}
// RenderWiki renders markdown wiki page to HTML and return HTML string
func RenderWiki(filename string, rawBytes []byte, urlPrefix string, metas map[string]string) string {
return string(renderFile(filename, rawBytes, urlPrefix, metas, true))
}
func render(parser Parser, rawBytes []byte, urlPrefix string, metas map[string]string, isWiki bool) []byte {
urlPrefix = strings.Replace(urlPrefix, " ", "+", -1)
result := parser.Render(rawBytes, urlPrefix, metas, isWiki)
// TODO: one day the error should be returned.
result, err := PostProcess(result, urlPrefix, metas, isWiki)
if err != nil {
log.Error(3, "PostProcess: %v", err)
}
return SanitizeBytes(result)
}
func renderByType(tp string, rawBytes []byte, urlPrefix string, metas map[string]string, isWiki bool) []byte {
if parser, ok := parsers[tp]; ok {
return render(parser, rawBytes, urlPrefix, metas, isWiki)
}
return nil
}
func renderFile(filename string, rawBytes []byte, urlPrefix string, metas map[string]string, isWiki bool) []byte {
extension := strings.ToLower(filepath.Ext(filename))
if parser, ok := extParsers[extension]; ok {
return render(parser, rawBytes, urlPrefix, metas, isWiki)
}
return nil
}
// Type returns if markup format via the filename
func Type(filename string) string {
if parser := GetParserByFileName(filename); parser != nil {
return parser.Name()
}
return ""
}
// IsMarkupFile reports whether file is a markup type file
func IsMarkupFile(name, markup string) bool {
if parser := GetParserByFileName(name); parser != nil {
return parser.Name() == markup
}
return false
}
// IsReadmeFile reports whether name looks like a README file
// based on its name.
func IsReadmeFile(name string) bool {
name = strings.ToLower(name)
if len(name) < 6 {
return false
} else if len(name) == 6 {
return name == "readme"
}
return name[:7] == "readme."
}