All files / shared/src escapeHtml.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
160x
 
160x
445x
445x
 
445x
394x
 
 
51x
 
 
51x
51x
405x
 
18x
18x
 
10x
10x
 
2x
2x
 
46x
46x
 
44x
44x
 
285x
 
 
120x
80x
 
 
120x
120x
 
 
51x
 
 
 
160x
 
160x
15x
 
 
const escapeRE = /["'&<>]/
 
export function escapeHtml(string: unknown) {
  const str = '' + string
  const match = escapeRE.exec(str)
 
  if (!match) {
    return str
  }
 
  let html = ''
  let escaped: string
  let index: number
  let lastIndex = 0
  for (index = match.index; index < str.length; index++) {
    switch (str.charCodeAt(index)) {
      case 34: // "
        escaped = '&quot;'
        break
      case 38: // &
        escaped = '&amp;'
        break
      case 39: // '
        escaped = '&#39;'
        break
      case 60: // <
        escaped = '&lt;'
        break
      case 62: // >
        escaped = '&gt;'
        break
      default:
        continue
    }
 
    if (lastIndex !== index) {
      html += str.slice(lastIndex, index)
    }
 
    lastIndex = index + 1
    html += escaped
  }
 
  return lastIndex !== index ? html + str.slice(lastIndex, index) : html
}
 
// https://www.w3.org/TR/html52/syntax.html#comments
const commentStripRE = /^-?>|<!--|-->|--!>|<!-$/g
 
export function escapeHtmlComment(src: string): string {
  return src.replace(commentStripRE, '')
}