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
|
CodeMirror.defineMode("gfm", function(config, parserConfig) {
var mdMode = CodeMirror.getMode(config, "markdown");
var aliases = {
html: "htmlmixed",
js: "javascript",
json: "application/json",
c: "text/x-csrc",
"c++": "text/x-c++src",
java: "text/x-java",
csharp: "text/x-csharp",
"c#": "text/x-csharp"
};
// make this lazy so that we don't need to load GFM last
var getMode = (function () {
var i, modes = {}, mimes = {}, mime;
var list = CodeMirror.listModes();
for (i = 0; i < list.length; i++) {
modes[list[i]] = list[i];
}
var mimesList = CodeMirror.listMIMEs();
for (i = 0; i < mimesList.length; i++) {
mime = mimesList[i].mime;
mimes[mime] = mimesList[i].mime;
}
for (var a in aliases) {
if (aliases[a] in modes || aliases[a] in mimes)
modes[a] = aliases[a];
}
return function (lang) {
return modes[lang] ? CodeMirror.getMode(config, modes[lang]) : null;
}
}());
function markdown(stream, state) {
// intercept fenced code blocks
if (stream.sol() && stream.match(/^```([\w+#]*)/)) {
// try switching mode
state.localMode = getMode(RegExp.$1)
if (state.localMode)
state.localState = state.localMode.startState();
state.token = local;
return 'code';
}
return mdMode.token(stream, state.mdState);
}
function local(stream, state) {
if (stream.sol() && stream.match(/^```/)) {
state.localMode = state.localState = null;
state.token = markdown;
return 'code';
}
else if (state.localMode) {
return state.localMode.token(stream, state.localState);
} else {
stream.skipToEnd();
return 'code';
}
}
// custom handleText to prevent emphasis in the middle of a word
// and add autolinking
function handleText(stream, mdState) {
var match;
if (stream.match(/^\w+:\/\/\S+/)) {
return 'link';
}
if (stream.match(/^[^\[*\\<>` _][^\[*\\<>` ]*[^\[*\\<>` _]/)) {
return mdMode.getType(mdState);
}
if (match = stream.match(/^[^\[*\\<>` ]+/)) {
var word = match[0];
if (word[0] === '_' && word[word.length-1] === '_') {
stream.backUp(word.length);
return undefined;
}
return mdMode.getType(mdState);
}
if (stream.eatSpace()) {
return null;
}
}
return {
startState: function() {
var mdState = mdMode.startState();
mdState.text = handleText;
return {token: markdown, mode: "markdown", mdState: mdState,
localMode: null, localState: null};
},
copyState: function(state) {
return {token: state.token, mode: state.mode, mdState: CodeMirror.copyState(mdMode, state.mdState),
localMode: state.localMode,
localState: state.localMode ? CodeMirror.copyState(state.localMode, state.localState) : null};
},
token: function(stream, state) {
/* Parse GFM double bracket links */
if ((ch = stream.peek()) != undefined && ch == '[') {
stream.next(); // Advance the stream
/* Only handle double bracket links */
if ((ch = stream.peek()) == undefined || ch != '[') {
stream.backUp(1);
return state.token(stream, state);
}
while ((ch = stream.next()) != undefined && ch != ']') {}
if (ch == ']' && (ch = stream.next()) != undefined && ch == ']')
return 'link';
/* If we did not find the second ']' */
stream.backUp(1);
}
/* Match GFM latex formulas, as well as latex formulas within '$' */
if (stream.match(/^\$[^\$]+\$/)) {
return "string";
}
if (stream.match(/^\\\((.*?)\\\)/)) {
return "string";
}
if (stream.match(/^\$\$[^\$]+\$\$/)) {
return "string";
}
if (stream.match(/^\\\[(.*?)\\\]/)) {
return "string";
}
return state.token(stream, state);
}
}
}, "markdown");
|
