source: trip-planner-front/node_modules/qs/lib/utils.js@ 6c1585f

Last change on this file since 6c1585f was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 6.1 KB
Line 
1'use strict';
2
3var has = Object.prototype.hasOwnProperty;
4var isArray = Array.isArray;
5
6var hexTable = (function () {
7 var array = [];
8 for (var i = 0; i < 256; ++i) {
9 array.push('%' + ((i < 16 ? '0' : '') + i.toString(16)).toUpperCase());
10 }
11
12 return array;
13}());
14
15var compactQueue = function compactQueue(queue) {
16 while (queue.length > 1) {
17 var item = queue.pop();
18 var obj = item.obj[item.prop];
19
20 if (isArray(obj)) {
21 var compacted = [];
22
23 for (var j = 0; j < obj.length; ++j) {
24 if (typeof obj[j] !== 'undefined') {
25 compacted.push(obj[j]);
26 }
27 }
28
29 item.obj[item.prop] = compacted;
30 }
31 }
32};
33
34var arrayToObject = function arrayToObject(source, options) {
35 var obj = options && options.plainObjects ? Object.create(null) : {};
36 for (var i = 0; i < source.length; ++i) {
37 if (typeof source[i] !== 'undefined') {
38 obj[i] = source[i];
39 }
40 }
41
42 return obj;
43};
44
45var merge = function merge(target, source, options) {
46 if (!source) {
47 return target;
48 }
49
50 if (typeof source !== 'object') {
51 if (isArray(target)) {
52 target.push(source);
53 } else if (target && typeof target === 'object') {
54 if ((options && (options.plainObjects || options.allowPrototypes)) || !has.call(Object.prototype, source)) {
55 target[source] = true;
56 }
57 } else {
58 return [target, source];
59 }
60
61 return target;
62 }
63
64 if (!target || typeof target !== 'object') {
65 return [target].concat(source);
66 }
67
68 var mergeTarget = target;
69 if (isArray(target) && !isArray(source)) {
70 mergeTarget = arrayToObject(target, options);
71 }
72
73 if (isArray(target) && isArray(source)) {
74 source.forEach(function (item, i) {
75 if (has.call(target, i)) {
76 var targetItem = target[i];
77 if (targetItem && typeof targetItem === 'object' && item && typeof item === 'object') {
78 target[i] = merge(targetItem, item, options);
79 } else {
80 target.push(item);
81 }
82 } else {
83 target[i] = item;
84 }
85 });
86 return target;
87 }
88
89 return Object.keys(source).reduce(function (acc, key) {
90 var value = source[key];
91
92 if (has.call(acc, key)) {
93 acc[key] = merge(acc[key], value, options);
94 } else {
95 acc[key] = value;
96 }
97 return acc;
98 }, mergeTarget);
99};
100
101var assign = function assignSingleSource(target, source) {
102 return Object.keys(source).reduce(function (acc, key) {
103 acc[key] = source[key];
104 return acc;
105 }, target);
106};
107
108var decode = function (str, decoder, charset) {
109 var strWithoutPlus = str.replace(/\+/g, ' ');
110 if (charset === 'iso-8859-1') {
111 // unescape never throws, no try...catch needed:
112 return strWithoutPlus.replace(/%[0-9a-f]{2}/gi, unescape);
113 }
114 // utf-8
115 try {
116 return decodeURIComponent(strWithoutPlus);
117 } catch (e) {
118 return strWithoutPlus;
119 }
120};
121
122var encode = function encode(str, defaultEncoder, charset) {
123 // This code was originally written by Brian White (mscdex) for the io.js core querystring library.
124 // It has been adapted here for stricter adherence to RFC 3986
125 if (str.length === 0) {
126 return str;
127 }
128
129 var string = typeof str === 'string' ? str : String(str);
130
131 if (charset === 'iso-8859-1') {
132 return escape(string).replace(/%u[0-9a-f]{4}/gi, function ($0) {
133 return '%26%23' + parseInt($0.slice(2), 16) + '%3B';
134 });
135 }
136
137 var out = '';
138 for (var i = 0; i < string.length; ++i) {
139 var c = string.charCodeAt(i);
140
141 if (
142 c === 0x2D // -
143 || c === 0x2E // .
144 || c === 0x5F // _
145 || c === 0x7E // ~
146 || (c >= 0x30 && c <= 0x39) // 0-9
147 || (c >= 0x41 && c <= 0x5A) // a-z
148 || (c >= 0x61 && c <= 0x7A) // A-Z
149 ) {
150 out += string.charAt(i);
151 continue;
152 }
153
154 if (c < 0x80) {
155 out = out + hexTable[c];
156 continue;
157 }
158
159 if (c < 0x800) {
160 out = out + (hexTable[0xC0 | (c >> 6)] + hexTable[0x80 | (c & 0x3F)]);
161 continue;
162 }
163
164 if (c < 0xD800 || c >= 0xE000) {
165 out = out + (hexTable[0xE0 | (c >> 12)] + hexTable[0x80 | ((c >> 6) & 0x3F)] + hexTable[0x80 | (c & 0x3F)]);
166 continue;
167 }
168
169 i += 1;
170 c = 0x10000 + (((c & 0x3FF) << 10) | (string.charCodeAt(i) & 0x3FF));
171 out += hexTable[0xF0 | (c >> 18)]
172 + hexTable[0x80 | ((c >> 12) & 0x3F)]
173 + hexTable[0x80 | ((c >> 6) & 0x3F)]
174 + hexTable[0x80 | (c & 0x3F)];
175 }
176
177 return out;
178};
179
180var compact = function compact(value) {
181 var queue = [{ obj: { o: value }, prop: 'o' }];
182 var refs = [];
183
184 for (var i = 0; i < queue.length; ++i) {
185 var item = queue[i];
186 var obj = item.obj[item.prop];
187
188 var keys = Object.keys(obj);
189 for (var j = 0; j < keys.length; ++j) {
190 var key = keys[j];
191 var val = obj[key];
192 if (typeof val === 'object' && val !== null && refs.indexOf(val) === -1) {
193 queue.push({ obj: obj, prop: key });
194 refs.push(val);
195 }
196 }
197 }
198
199 compactQueue(queue);
200
201 return value;
202};
203
204var isRegExp = function isRegExp(obj) {
205 return Object.prototype.toString.call(obj) === '[object RegExp]';
206};
207
208var isBuffer = function isBuffer(obj) {
209 if (!obj || typeof obj !== 'object') {
210 return false;
211 }
212
213 return !!(obj.constructor && obj.constructor.isBuffer && obj.constructor.isBuffer(obj));
214};
215
216var combine = function combine(a, b) {
217 return [].concat(a, b);
218};
219
220module.exports = {
221 arrayToObject: arrayToObject,
222 assign: assign,
223 combine: combine,
224 compact: compact,
225 decode: decode,
226 encode: encode,
227 isBuffer: isBuffer,
228 isRegExp: isRegExp,
229 merge: merge
230};
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