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
|
/*
Module dependencies
*/
var ElementType = require('domelementtype');
var entities = require('entities');
var unencodedElements = {
__proto__: null,
style: true,
script: true,
xmp: true,
iframe: true,
noembed: true,
noframes: true,
plaintext: true,
noscript: true
};
/*
Format attributes
*/
function formatAttrs(attributes, opts) {
if (!attributes) return;
var output = '',
value;
// Loop through the attributes
for (var key in attributes) {
value = attributes[key];
if (output) {
output += ' ';
}
output += key;
if ((value !== null && value !== '') || opts.xmlMode) {
output += '="' + (opts.decodeEntities ? entities.encodeXML(value) : value) + '"';
}
}
return output;
}
/*
Self-enclosing tags (stolen from node-htmlparser)
*/
var singleTag = {
__proto__: null,
area: true,
base: true,
basefont: true,
br: true,
col: true,
command: true,
embed: true,
frame: true,
hr: true,
img: true,
input: true,
isindex: true,
keygen: true,
link: true,
meta: true,
param: true,
source: true,
track: true,
wbr: true,
};
var render = module.exports = function(dom, opts) {
if (!Array.isArray(dom) && !dom.cheerio) dom = [dom];
opts = opts || {};
var output = '';
for(var i = 0; i < dom.length; i++){
var elem = dom[i];
if (elem.type === 'root')
output += render(elem.children, opts);
else if (ElementType.isTag(elem))
output += renderTag(elem, opts);
else if (elem.type === ElementType.Directive)
output += renderDirective(elem);
else if (elem.type === ElementType.Comment)
output += renderComment(elem);
else if (elem.type === ElementType.CDATA)
output += renderCdata(elem);
else
output += renderText(elem, opts);
}
return output;
};
function renderTag(elem, opts) {
// Handle SVG
if (elem.name === "svg") opts = {decodeEntities: opts.decodeEntities, xmlMode: true};
var tag = '<' + elem.name,
attribs = formatAttrs(elem.attribs, opts);
if (attribs) {
tag += ' ' + attribs;
}
if (
opts.xmlMode
&& (!elem.children || elem.children.length === 0)
) {
tag += '/>';
} else {
tag += '>';
if (elem.children) {
tag += render(elem.children, opts);
}
if (!singleTag[elem.name] || opts.xmlMode) {
tag += '</' + elem.name + '>';
}
}
return tag;
}
function renderDirective(elem) {
return '<' + elem.data + '>';
}
function renderText(elem, opts) {
var data = elem.data || '';
// if entities weren't decoded, no need to encode them back
if (opts.decodeEntities && !(elem.parent && elem.parent.name in unencodedElements)) {
data = entities.encodeXML(data);
}
return data;
}
function renderCdata(elem) {
return '<![CDATA[' + elem.children[0].data + ']]>';
}
function renderComment(elem) {
return '<!--' + elem.data + '-->';
}
|
