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
|
// Replace link-like texts with link nodes.
//
// Currently restricted by `md.validateLink()` to http/https/ftp
//
'use strict';
var arrayReplaceAt = require('../common/utils').arrayReplaceAt;
function isLinkOpen(str) {
return /^<a[>\s]/i.test(str);
}
function isLinkClose(str) {
return /^<\/a\s*>/i.test(str);
}
module.exports = function linkify(state) {
var i, j, l, tokens, token, currentToken, nodes, ln, text, pos, lastPos,
level, htmlLinkLevel, url, fullUrl, urlText,
blockTokens = state.tokens,
links;
if (!state.md.options.linkify) { return; }
for (j = 0, l = blockTokens.length; j < l; j++) {
if (blockTokens[j].type !== 'inline' ||
!state.md.linkify.pretest(blockTokens[j].content)) {
continue;
}
tokens = blockTokens[j].children;
htmlLinkLevel = 0;
// We scan from the end, to keep position when new tags added.
// Use reversed logic in links start/end match
for (i = tokens.length - 1; i >= 0; i--) {
currentToken = tokens[i];
// Skip content of markdown links
if (currentToken.type === 'link_close') {
i--;
while (tokens[i].level !== currentToken.level && tokens[i].type !== 'link_open') {
i--;
}
continue;
}
// Skip content of html tag links
if (currentToken.type === 'html_inline') {
if (isLinkOpen(currentToken.content) && htmlLinkLevel > 0) {
htmlLinkLevel--;
}
if (isLinkClose(currentToken.content)) {
htmlLinkLevel++;
}
}
if (htmlLinkLevel > 0) { continue; }
if (currentToken.type === 'text' && state.md.linkify.test(currentToken.content)) {
text = currentToken.content;
links = state.md.linkify.match(text);
// Now split string to nodes
nodes = [];
level = currentToken.level;
lastPos = 0;
for (ln = 0; ln < links.length; ln++) {
url = links[ln].url;
fullUrl = state.md.normalizeLink(url);
if (!state.md.validateLink(fullUrl)) { continue; }
urlText = links[ln].text;
// Linkifier might send raw hostnames like "example.com", where url
// starts with domain name. So we prepend http:// in those cases,
// and remove it afterwards.
//
if (!links[ln].schema) {
urlText = state.md.normalizeLinkText('http://' + urlText).replace(/^http:\/\//, '');
} else if (links[ln].schema === 'mailto:' && !/^mailto:/i.test(urlText)) {
urlText = state.md.normalizeLinkText('mailto:' + urlText).replace(/^mailto:/, '');
} else {
urlText = state.md.normalizeLinkText(urlText);
}
pos = links[ln].index;
if (pos > lastPos) {
token = new state.Token('text', '', 0);
token.content = text.slice(lastPos, pos);
token.level = level;
nodes.push(token);
}
token = new state.Token('link_open', 'a', 1);
token.attrs = [ [ 'href', fullUrl ] ];
token.level = level++;
token.markup = 'linkify';
token.info = 'auto';
nodes.push(token);
token = new state.Token('text', '', 0);
token.content = urlText;
token.level = level;
nodes.push(token);
token = new state.Token('link_close', 'a', -1);
token.level = --level;
token.markup = 'linkify';
token.info = 'auto';
nodes.push(token);
lastPos = links[ln].lastIndex;
}
if (lastPos < text.length) {
token = new state.Token('text', '', 0);
token.content = text.slice(lastPos);
token.level = level;
nodes.push(token);
}
// replace current node
blockTokens[j].children = tokens = arrayReplaceAt(tokens, i, nodes);
}
}
}
};
|
