/
marked.js
186 lines (157 loc) · 4.09 KB
/
marked.js
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
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
const Lexer = require('./Lexer.js');
const Parser = require('./Parser.js');
const Tokenizer = require('./Tokenizer.js');
const Renderer = require('./Renderer.js');
const TextRenderer = require('./TextRenderer.js');
const Slugger = require('./Slugger.js');
const {
merge,
checkSanitizeDeprecation,
escape
} = require('./helpers.js');
const {
getDefaults,
changeDefaults,
defaults
} = require('./defaults.js');
/**
* Marked
*/
function marked(src, opt, callback) {
// throw error in case of non string input
if (typeof src === 'undefined' || src === null) {
throw new Error('marked(): input parameter is undefined or null');
}
if (typeof src !== 'string') {
throw new Error('marked(): input parameter is of type '
+ Object.prototype.toString.call(src) + ', string expected');
}
if (callback || typeof opt === 'function') {
if (!callback) {
callback = opt;
opt = null;
}
opt = merge({}, marked.defaults, opt || {});
checkSanitizeDeprecation(opt);
const highlight = opt.highlight;
let tokens,
pending,
i = 0;
try {
tokens = Lexer.lex(src, opt);
} catch (e) {
return callback(e);
}
pending = tokens.length;
const done = function(err) {
if (err) {
opt.highlight = highlight;
return callback(err);
}
let out;
try {
out = Parser.parse(tokens, opt);
} catch (e) {
err = e;
}
opt.highlight = highlight;
return err
? callback(err)
: callback(null, out);
};
if (!highlight || highlight.length < 3) {
return done();
}
delete opt.highlight;
if (!pending) return done();
for (; i < tokens.length; i++) {
(function(token) {
if (token.type !== 'code') {
return --pending || done();
}
return highlight(token.text, token.lang, function(err, code) {
if (err) return done(err);
if (code == null || code === token.text) {
return --pending || done();
}
token.text = code;
token.escaped = true;
--pending || done();
});
})(tokens[i]);
}
return;
}
try {
opt = merge({}, marked.defaults, opt || {});
checkSanitizeDeprecation(opt);
return Parser.parse(Lexer.lex(src, opt), opt);
} catch (e) {
e.message += '\nPlease report this to https://github.com/markedjs/marked.';
if ((opt || marked.defaults).silent) {
return '<p>An error occurred:</p><pre>'
+ escape(e.message + '', true)
+ '</pre>';
}
throw e;
}
}
/**
* Options
*/
marked.options =
marked.setOptions = function(opt) {
merge(marked.defaults, opt);
changeDefaults(marked.defaults);
return marked;
};
marked.getDefaults = getDefaults;
marked.defaults = defaults;
/**
* Use Extension
*/
marked.use = function(extension) {
const opts = merge({}, extension);
if (extension.renderer) {
const renderer = marked.defaults.renderer || new Renderer();
for (const prop in extension.renderer) {
const prevRenderer = renderer[prop];
renderer[prop] = (...args) => {
let ret = extension.renderer[prop].apply(renderer, args);
if (ret === false) {
ret = prevRenderer.apply(renderer, args);
}
return ret;
};
}
opts.renderer = renderer;
}
if (extension.tokenizer) {
const tokenizer = marked.defaults.tokenizer || new Tokenizer();
for (const prop in extension.tokenizer) {
const prevTokenizer = tokenizer[prop];
tokenizer[prop] = (...args) => {
let ret = extension.tokenizer[prop].apply(tokenizer, args);
if (ret === false) {
ret = prevTokenizer.apply(tokenizer, args);
}
return ret;
};
}
opts.tokenizer = tokenizer;
}
marked.setOptions(opts);
};
/**
* Expose
*/
marked.Parser = Parser;
marked.parser = Parser.parse;
marked.Renderer = Renderer;
marked.TextRenderer = TextRenderer;
marked.Lexer = Lexer;
marked.lexer = Lexer.lex;
marked.Tokenizer = Tokenizer;
marked.Slugger = Slugger;
marked.parse = marked;
module.exports = marked;