source: trip-planner-front/node_modules/decode-uri-component/index.js@ b738035

Last change on this file since b738035 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 2.2 KB
Line 
1'use strict';
2var token = '%[a-f0-9]{2}';
3var singleMatcher = new RegExp(token, 'gi');
4var multiMatcher = new RegExp('(' + token + ')+', 'gi');
5
6function decodeComponents(components, split) {
7 try {
8 // Try to decode the entire string first
9 return decodeURIComponent(components.join(''));
10 } catch (err) {
11 // Do nothing
12 }
13
14 if (components.length === 1) {
15 return components;
16 }
17
18 split = split || 1;
19
20 // Split the array in 2 parts
21 var left = components.slice(0, split);
22 var right = components.slice(split);
23
24 return Array.prototype.concat.call([], decodeComponents(left), decodeComponents(right));
25}
26
27function decode(input) {
28 try {
29 return decodeURIComponent(input);
30 } catch (err) {
31 var tokens = input.match(singleMatcher);
32
33 for (var i = 1; i < tokens.length; i++) {
34 input = decodeComponents(tokens, i).join('');
35
36 tokens = input.match(singleMatcher);
37 }
38
39 return input;
40 }
41}
42
43function customDecodeURIComponent(input) {
44 // Keep track of all the replacements and prefill the map with the `BOM`
45 var replaceMap = {
46 '%FE%FF': '\uFFFD\uFFFD',
47 '%FF%FE': '\uFFFD\uFFFD'
48 };
49
50 var match = multiMatcher.exec(input);
51 while (match) {
52 try {
53 // Decode as big chunks as possible
54 replaceMap[match[0]] = decodeURIComponent(match[0]);
55 } catch (err) {
56 var result = decode(match[0]);
57
58 if (result !== match[0]) {
59 replaceMap[match[0]] = result;
60 }
61 }
62
63 match = multiMatcher.exec(input);
64 }
65
66 // Add `%C2` at the end of the map to make sure it does not replace the combinator before everything else
67 replaceMap['%C2'] = '\uFFFD';
68
69 var entries = Object.keys(replaceMap);
70
71 for (var i = 0; i < entries.length; i++) {
72 // Replace all decoded components
73 var key = entries[i];
74 input = input.replace(new RegExp(key, 'g'), replaceMap[key]);
75 }
76
77 return input;
78}
79
80module.exports = function (encodedURI) {
81 if (typeof encodedURI !== 'string') {
82 throw new TypeError('Expected `encodedURI` to be of type `string`, got `' + typeof encodedURI + '`');
83 }
84
85 try {
86 encodedURI = encodedURI.replace(/\+/g, ' ');
87
88 // Try the built in decoder first
89 return decodeURIComponent(encodedURI);
90 } catch (err) {
91 // Fallback to a more advanced decoder
92 return customDecodeURIComponent(encodedURI);
93 }
94};
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