Last change
on this file since 571e0df was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
initial commit
|
-
Property mode
set to
100644
|
File size:
1.0 KB
|
Line | |
---|
1 | /*!
|
---|
2 | * compressible
|
---|
3 | * Copyright(c) 2013 Jonathan Ong
|
---|
4 | * Copyright(c) 2014 Jeremiah Senkpiel
|
---|
5 | * Copyright(c) 2015 Douglas Christopher Wilson
|
---|
6 | * MIT Licensed
|
---|
7 | */
|
---|
8 |
|
---|
9 | 'use strict'
|
---|
10 |
|
---|
11 | /**
|
---|
12 | * Module dependencies.
|
---|
13 | * @private
|
---|
14 | */
|
---|
15 |
|
---|
16 | var db = require('mime-db')
|
---|
17 |
|
---|
18 | /**
|
---|
19 | * Module variables.
|
---|
20 | * @private
|
---|
21 | */
|
---|
22 |
|
---|
23 | var COMPRESSIBLE_TYPE_REGEXP = /^text\/|\+(?:json|text|xml)$/i
|
---|
24 | var EXTRACT_TYPE_REGEXP = /^\s*([^;\s]*)(?:;|\s|$)/
|
---|
25 |
|
---|
26 | /**
|
---|
27 | * Module exports.
|
---|
28 | * @public
|
---|
29 | */
|
---|
30 |
|
---|
31 | module.exports = compressible
|
---|
32 |
|
---|
33 | /**
|
---|
34 | * Checks if a type is compressible.
|
---|
35 | *
|
---|
36 | * @param {string} type
|
---|
37 | * @return {Boolean} compressible
|
---|
38 | * @public
|
---|
39 | */
|
---|
40 |
|
---|
41 | function compressible (type) {
|
---|
42 | if (!type || typeof type !== 'string') {
|
---|
43 | return false
|
---|
44 | }
|
---|
45 |
|
---|
46 | // strip parameters
|
---|
47 | var match = EXTRACT_TYPE_REGEXP.exec(type)
|
---|
48 | var mime = match && match[1].toLowerCase()
|
---|
49 | var data = db[mime]
|
---|
50 |
|
---|
51 | // return database information
|
---|
52 | if (data && data.compressible !== undefined) {
|
---|
53 | return data.compressible
|
---|
54 | }
|
---|
55 |
|
---|
56 | // fallback to regexp or unknown
|
---|
57 | return COMPRESSIBLE_TYPE_REGEXP.test(mime) || undefined
|
---|
58 | }
|
---|
Note:
See
TracBrowser
for help on using the repository browser.