1 |
|
2 |
|
3 |
|
4 |
|
5 |
|
6 |
|
7 |
|
8 |
|
9 | 'use strict';
|
10 |
|
11 | var adler32 = require('./adler32');
|
12 |
|
13 | var TAG_END = /\/?>/;
|
14 | var COMMENT_START = /^<\!\-\-/;
|
15 |
|
16 | var ReactMarkupChecksum = {
|
17 | CHECKSUM_ATTR_NAME: 'data-react-checksum',
|
18 |
|
19 | |
20 |
|
21 |
|
22 |
|
23 | addChecksumToMarkup: function (markup) {
|
24 | var checksum = adler32(markup);
|
25 |
|
26 |
|
27 | if (COMMENT_START.test(markup)) {
|
28 | return markup;
|
29 | } else {
|
30 | return markup.replace(TAG_END, ' ' + ReactMarkupChecksum.CHECKSUM_ATTR_NAME + '="' + checksum + '"$&');
|
31 | }
|
32 | },
|
33 |
|
34 | |
35 |
|
36 |
|
37 |
|
38 |
|
39 | canReuseMarkup: function (markup, element) {
|
40 | var existingChecksum = element.getAttribute(ReactMarkupChecksum.CHECKSUM_ATTR_NAME);
|
41 | existingChecksum = existingChecksum && parseInt(existingChecksum, 10);
|
42 | var markupChecksum = adler32(markup);
|
43 | return markupChecksum === existingChecksum;
|
44 | }
|
45 | };
|
46 |
|
47 | module.exports = ReactMarkupChecksum; |
\ | No newline at end of file |