source: trip-planner-front/node_modules/qs/lib/parse.js@ 76712b2

Last change on this file since 76712b2 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 8.3 KB
Line 
1'use strict';
2
3var utils = require('./utils');
4
5var has = Object.prototype.hasOwnProperty;
6
7var defaults = {
8 allowDots: false,
9 allowPrototypes: false,
10 arrayLimit: 20,
11 charset: 'utf-8',
12 charsetSentinel: false,
13 comma: false,
14 decoder: utils.decode,
15 delimiter: '&',
16 depth: 5,
17 ignoreQueryPrefix: false,
18 interpretNumericEntities: false,
19 parameterLimit: 1000,
20 parseArrays: true,
21 plainObjects: false,
22 strictNullHandling: false
23};
24
25var interpretNumericEntities = function (str) {
26 return str.replace(/&#(\d+);/g, function ($0, numberStr) {
27 return String.fromCharCode(parseInt(numberStr, 10));
28 });
29};
30
31// This is what browsers will submit when the ✓ character occurs in an
32// application/x-www-form-urlencoded body and the encoding of the page containing
33// the form is iso-8859-1, or when the submitted form has an accept-charset
34// attribute of iso-8859-1. Presumably also with other charsets that do not contain
35// the ✓ character, such as us-ascii.
36var isoSentinel = 'utf8=%26%2310003%3B'; // encodeURIComponent('&#10003;')
37
38// These are the percent-encoded utf-8 octets representing a checkmark, indicating that the request actually is utf-8 encoded.
39var charsetSentinel = 'utf8=%E2%9C%93'; // encodeURIComponent('✓')
40
41var parseValues = function parseQueryStringValues(str, options) {
42 var obj = {};
43 var cleanStr = options.ignoreQueryPrefix ? str.replace(/^\?/, '') : str;
44 var limit = options.parameterLimit === Infinity ? undefined : options.parameterLimit;
45 var parts = cleanStr.split(options.delimiter, limit);
46 var skipIndex = -1; // Keep track of where the utf8 sentinel was found
47 var i;
48
49 var charset = options.charset;
50 if (options.charsetSentinel) {
51 for (i = 0; i < parts.length; ++i) {
52 if (parts[i].indexOf('utf8=') === 0) {
53 if (parts[i] === charsetSentinel) {
54 charset = 'utf-8';
55 } else if (parts[i] === isoSentinel) {
56 charset = 'iso-8859-1';
57 }
58 skipIndex = i;
59 i = parts.length; // The eslint settings do not allow break;
60 }
61 }
62 }
63
64 for (i = 0; i < parts.length; ++i) {
65 if (i === skipIndex) {
66 continue;
67 }
68 var part = parts[i];
69
70 var bracketEqualsPos = part.indexOf(']=');
71 var pos = bracketEqualsPos === -1 ? part.indexOf('=') : bracketEqualsPos + 1;
72
73 var key, val;
74 if (pos === -1) {
75 key = options.decoder(part, defaults.decoder, charset);
76 val = options.strictNullHandling ? null : '';
77 } else {
78 key = options.decoder(part.slice(0, pos), defaults.decoder, charset);
79 val = options.decoder(part.slice(pos + 1), defaults.decoder, charset);
80 }
81
82 if (val && options.interpretNumericEntities && charset === 'iso-8859-1') {
83 val = interpretNumericEntities(val);
84 }
85
86 if (val && options.comma && val.indexOf(',') > -1) {
87 val = val.split(',');
88 }
89
90 if (has.call(obj, key)) {
91 obj[key] = utils.combine(obj[key], val);
92 } else {
93 obj[key] = val;
94 }
95 }
96
97 return obj;
98};
99
100var parseObject = function (chain, val, options) {
101 var leaf = val;
102
103 for (var i = chain.length - 1; i >= 0; --i) {
104 var obj;
105 var root = chain[i];
106
107 if (root === '[]' && options.parseArrays) {
108 obj = [].concat(leaf);
109 } else {
110 obj = options.plainObjects ? Object.create(null) : {};
111 var cleanRoot = root.charAt(0) === '[' && root.charAt(root.length - 1) === ']' ? root.slice(1, -1) : root;
112 var index = parseInt(cleanRoot, 10);
113 if (!options.parseArrays && cleanRoot === '') {
114 obj = { 0: leaf };
115 } else if (
116 !isNaN(index)
117 && root !== cleanRoot
118 && String(index) === cleanRoot
119 && index >= 0
120 && (options.parseArrays && index <= options.arrayLimit)
121 ) {
122 obj = [];
123 obj[index] = leaf;
124 } else {
125 obj[cleanRoot] = leaf;
126 }
127 }
128
129 leaf = obj;
130 }
131
132 return leaf;
133};
134
135var parseKeys = function parseQueryStringKeys(givenKey, val, options) {
136 if (!givenKey) {
137 return;
138 }
139
140 // Transform dot notation to bracket notation
141 var key = options.allowDots ? givenKey.replace(/\.([^.[]+)/g, '[$1]') : givenKey;
142
143 // The regex chunks
144
145 var brackets = /(\[[^[\]]*])/;
146 var child = /(\[[^[\]]*])/g;
147
148 // Get the parent
149
150 var segment = brackets.exec(key);
151 var parent = segment ? key.slice(0, segment.index) : key;
152
153 // Stash the parent if it exists
154
155 var keys = [];
156 if (parent) {
157 // If we aren't using plain objects, optionally prefix keys that would overwrite object prototype properties
158 if (!options.plainObjects && has.call(Object.prototype, parent)) {
159 if (!options.allowPrototypes) {
160 return;
161 }
162 }
163
164 keys.push(parent);
165 }
166
167 // Loop through children appending to the array until we hit depth
168
169 var i = 0;
170 while ((segment = child.exec(key)) !== null && i < options.depth) {
171 i += 1;
172 if (!options.plainObjects && has.call(Object.prototype, segment[1].slice(1, -1))) {
173 if (!options.allowPrototypes) {
174 return;
175 }
176 }
177 keys.push(segment[1]);
178 }
179
180 // If there's a remainder, just add whatever is left
181
182 if (segment) {
183 keys.push('[' + key.slice(segment.index) + ']');
184 }
185
186 return parseObject(keys, val, options);
187};
188
189var normalizeParseOptions = function normalizeParseOptions(opts) {
190 if (!opts) {
191 return defaults;
192 }
193
194 if (opts.decoder !== null && opts.decoder !== undefined && typeof opts.decoder !== 'function') {
195 throw new TypeError('Decoder has to be a function.');
196 }
197
198 if (typeof opts.charset !== 'undefined' && opts.charset !== 'utf-8' && opts.charset !== 'iso-8859-1') {
199 throw new Error('The charset option must be either utf-8, iso-8859-1, or undefined');
200 }
201 var charset = typeof opts.charset === 'undefined' ? defaults.charset : opts.charset;
202
203 return {
204 allowDots: typeof opts.allowDots === 'undefined' ? defaults.allowDots : !!opts.allowDots,
205 allowPrototypes: typeof opts.allowPrototypes === 'boolean' ? opts.allowPrototypes : defaults.allowPrototypes,
206 arrayLimit: typeof opts.arrayLimit === 'number' ? opts.arrayLimit : defaults.arrayLimit,
207 charset: charset,
208 charsetSentinel: typeof opts.charsetSentinel === 'boolean' ? opts.charsetSentinel : defaults.charsetSentinel,
209 comma: typeof opts.comma === 'boolean' ? opts.comma : defaults.comma,
210 decoder: typeof opts.decoder === 'function' ? opts.decoder : defaults.decoder,
211 delimiter: typeof opts.delimiter === 'string' || utils.isRegExp(opts.delimiter) ? opts.delimiter : defaults.delimiter,
212 depth: typeof opts.depth === 'number' ? opts.depth : defaults.depth,
213 ignoreQueryPrefix: opts.ignoreQueryPrefix === true,
214 interpretNumericEntities: typeof opts.interpretNumericEntities === 'boolean' ? opts.interpretNumericEntities : defaults.interpretNumericEntities,
215 parameterLimit: typeof opts.parameterLimit === 'number' ? opts.parameterLimit : defaults.parameterLimit,
216 parseArrays: opts.parseArrays !== false,
217 plainObjects: typeof opts.plainObjects === 'boolean' ? opts.plainObjects : defaults.plainObjects,
218 strictNullHandling: typeof opts.strictNullHandling === 'boolean' ? opts.strictNullHandling : defaults.strictNullHandling
219 };
220};
221
222module.exports = function (str, opts) {
223 var options = normalizeParseOptions(opts);
224
225 if (str === '' || str === null || typeof str === 'undefined') {
226 return options.plainObjects ? Object.create(null) : {};
227 }
228
229 var tempObj = typeof str === 'string' ? parseValues(str, options) : str;
230 var obj = options.plainObjects ? Object.create(null) : {};
231
232 // Iterate over the keys and setup the new object
233
234 var keys = Object.keys(tempObj);
235 for (var i = 0; i < keys.length; ++i) {
236 var key = keys[i];
237 var newObj = parseKeys(key, tempObj[key], options);
238 obj = utils.merge(obj, newObj, options);
239 }
240
241 return utils.compact(obj);
242};
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