forked from jupyterlab/jupyterlab
-
Notifications
You must be signed in to change notification settings - Fork 0
/
sanitizer.ts
56 lines (49 loc) · 1.55 KB
/
sanitizer.ts
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
// Copyright (c) Jupyter Development Team.
// Distributed under the terms of the Modified BSD License.
import * as sanitize from 'sanitize-html';
export
interface ISanitizer {
/**
* Sanitize an HTML string.
*/
sanitize(dirty: string): string;
}
/**
* A class to sanitize HTML strings.
*/
class Sanitizer implements ISanitizer {
/**
* Sanitize an HTML string.
*/
sanitize(dirty: string): string {
return sanitize(dirty, this._options);
}
private _options: sanitize.IOptions = {
allowedTags: sanitize.defaults.allowedTags
.concat('h1', 'h2', 'img', 'span', 'audio', 'video'),
allowedAttributes: {
// Allow the "rel" attribute for <a> tags.
'a': sanitize.defaults.allowedAttributes['a'].concat('rel'),
// Allow the "src" attribute for <img> tags.
'img': ['src', 'height', 'width', 'alt'],
// Allow "class" attribute for <code> tags.
'code': ['class'],
// Allow "class" attribute for <span> tags.
'span': ['class'],
// Allow the "src" attribute for <audio> tags.
'audio': ['src', 'autoplay', 'loop', 'muted', 'controls'],
// Allow the "src" attribute for <video> tags.
'video': ['src', 'height', 'width', 'autoplay',
'loop', 'muted', 'controls']
},
transformTags: {
// Set the "rel" attribute for <a> tags to "nofollow".
'a': sanitize.simpleTransform('a', { 'rel': 'nofollow' })
}
};
}
/**
* The default instance of an `ISanitizer` meant for use by user code.
*/
export
const defaultSanitizer: ISanitizer = new Sanitizer();