blob: b7183f6d3963d90b01fcca88bdc0c9b6e139ada4 (
plain)
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
149
150
151
152
153
154
155
156
|
# Punycode
<!-- YAML
deprecated: v7.0.0
-->
<!--introduced_in=v0.10.0-->
> Stability: 0 - Deprecated
<!-- source_link=lib/punycode.js -->
**The version of the punycode module bundled in Node.js is being deprecated.**
In a future major version of Node.js this module will be removed. Users
currently depending on the `punycode` module should switch to using the
userland-provided [Punycode.js][] module instead. For punycode-based URL
encoding, see [`url.domainToASCII`][] or, more generally, the
[WHATWG URL API][].
The `punycode` module is a bundled version of the [Punycode.js][] module. It
can be accessed using:
```js
const punycode = require('punycode');
```
[Punycode][] is a character encoding scheme defined by RFC 3492 that is
primarily intended for use in Internationalized Domain Names. Because host
names in URLs are limited to ASCII characters only, Domain Names that contain
non-ASCII characters must be converted into ASCII using the Punycode scheme.
For instance, the Japanese character that translates into the English word,
`'example'` is `'例'`. The Internationalized Domain Name, `'例.com'` (equivalent
to `'example.com'`) is represented by Punycode as the ASCII string
`'xn--fsq.com'`.
The `punycode` module provides a simple implementation of the Punycode standard.
The `punycode` module is a third-party dependency used by Node.js and
made available to developers as a convenience. Fixes or other modifications to
the module must be directed to the [Punycode.js][] project.
## `punycode.decode(string)`
<!-- YAML
added: v0.5.1
-->
* `string` {string}
The `punycode.decode()` method converts a [Punycode][] string of ASCII-only
characters to the equivalent string of Unicode codepoints.
```js
punycode.decode('maana-pta'); // 'mañana'
punycode.decode('--dqo34k'); // '☃-⌘'
```
## `punycode.encode(string)`
<!-- YAML
added: v0.5.1
-->
* `string` {string}
The `punycode.encode()` method converts a string of Unicode codepoints to a
[Punycode][] string of ASCII-only characters.
```js
punycode.encode('mañana'); // 'maana-pta'
punycode.encode('☃-⌘'); // '--dqo34k'
```
## `punycode.toASCII(domain)`
<!-- YAML
added: v0.6.1
-->
* `domain` {string}
The `punycode.toASCII()` method converts a Unicode string representing an
Internationalized Domain Name to [Punycode][]. Only the non-ASCII parts of the
domain name will be converted. Calling `punycode.toASCII()` on a string that
already only contains ASCII characters will have no effect.
```js
// encode domain names
punycode.toASCII('mañana.com'); // 'xn--maana-pta.com'
punycode.toASCII('☃-⌘.com'); // 'xn----dqo34k.com'
punycode.toASCII('example.com'); // 'example.com'
```
## `punycode.toUnicode(domain)`
<!-- YAML
added: v0.6.1
-->
* `domain` {string}
The `punycode.toUnicode()` method converts a string representing a domain name
containing [Punycode][] encoded characters into Unicode. Only the [Punycode][]
encoded parts of the domain name are be converted.
```js
// decode domain names
punycode.toUnicode('xn--maana-pta.com'); // 'mañana.com'
punycode.toUnicode('xn----dqo34k.com'); // '☃-⌘.com'
punycode.toUnicode('example.com'); // 'example.com'
```
## `punycode.ucs2`
<!-- YAML
added: v0.7.0
-->
### `punycode.ucs2.decode(string)`
<!-- YAML
added: v0.7.0
-->
* `string` {string}
The `punycode.ucs2.decode()` method returns an array containing the numeric
codepoint values of each Unicode symbol in the string.
```js
punycode.ucs2.decode('abc'); // [0x61, 0x62, 0x63]
// surrogate pair for U+1D306 tetragram for centre:
punycode.ucs2.decode('\uD834\uDF06'); // [0x1D306]
```
### `punycode.ucs2.encode(codePoints)`
<!-- YAML
added: v0.7.0
-->
* `codePoints` {integer[]}
The `punycode.ucs2.encode()` method returns a string based on an array of
numeric code point values.
```js
punycode.ucs2.encode([0x61, 0x62, 0x63]); // 'abc'
punycode.ucs2.encode([0x1D306]); // '\uD834\uDF06'
```
## `punycode.version`
<!-- YAML
added: v0.6.1
-->
* {string}
Returns a string identifying the current [Punycode.js][] version number.
[Punycode]: https://tools.ietf.org/html/rfc3492
[Punycode.js]: https://github.com/bestiejs/punycode.js
[WHATWG URL API]: url.md#the-whatwg-url-api
[`url.domainToASCII`]: url.md#urldomaintoasciidomain
|