source: trip-planner-front/node_modules/qs/lib/stringify.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: 8.0 KB
Line 
1'use strict';
2
3var utils = require('./utils');
4var formats = require('./formats');
5var has = Object.prototype.hasOwnProperty;
6
7var arrayPrefixGenerators = {
8 brackets: function brackets(prefix) { // eslint-disable-line func-name-matching
9 return prefix + '[]';
10 },
11 comma: 'comma',
12 indices: function indices(prefix, key) { // eslint-disable-line func-name-matching
13 return prefix + '[' + key + ']';
14 },
15 repeat: function repeat(prefix) { // eslint-disable-line func-name-matching
16 return prefix;
17 }
18};
19
20var isArray = Array.isArray;
21var push = Array.prototype.push;
22var pushToArray = function (arr, valueOrArray) {
23 push.apply(arr, isArray(valueOrArray) ? valueOrArray : [valueOrArray]);
24};
25
26var toISO = Date.prototype.toISOString;
27
28var defaults = {
29 addQueryPrefix: false,
30 allowDots: false,
31 charset: 'utf-8',
32 charsetSentinel: false,
33 delimiter: '&',
34 encode: true,
35 encoder: utils.encode,
36 encodeValuesOnly: false,
37 formatter: formats.formatters[formats['default']],
38 // deprecated
39 indices: false,
40 serializeDate: function serializeDate(date) { // eslint-disable-line func-name-matching
41 return toISO.call(date);
42 },
43 skipNulls: false,
44 strictNullHandling: false
45};
46
47var stringify = function stringify( // eslint-disable-line func-name-matching
48 object,
49 prefix,
50 generateArrayPrefix,
51 strictNullHandling,
52 skipNulls,
53 encoder,
54 filter,
55 sort,
56 allowDots,
57 serializeDate,
58 formatter,
59 encodeValuesOnly,
60 charset
61) {
62 var obj = object;
63 if (typeof filter === 'function') {
64 obj = filter(prefix, obj);
65 } else if (obj instanceof Date) {
66 obj = serializeDate(obj);
67 } else if (generateArrayPrefix === 'comma' && isArray(obj)) {
68 obj = obj.join(',');
69 }
70
71 if (obj === null) {
72 if (strictNullHandling) {
73 return encoder && !encodeValuesOnly ? encoder(prefix, defaults.encoder, charset) : prefix;
74 }
75
76 obj = '';
77 }
78
79 if (typeof obj === 'string' || typeof obj === 'number' || typeof obj === 'boolean' || utils.isBuffer(obj)) {
80 if (encoder) {
81 var keyValue = encodeValuesOnly ? prefix : encoder(prefix, defaults.encoder, charset);
82 return [formatter(keyValue) + '=' + formatter(encoder(obj, defaults.encoder, charset))];
83 }
84 return [formatter(prefix) + '=' + formatter(String(obj))];
85 }
86
87 var values = [];
88
89 if (typeof obj === 'undefined') {
90 return values;
91 }
92
93 var objKeys;
94 if (isArray(filter)) {
95 objKeys = filter;
96 } else {
97 var keys = Object.keys(obj);
98 objKeys = sort ? keys.sort(sort) : keys;
99 }
100
101 for (var i = 0; i < objKeys.length; ++i) {
102 var key = objKeys[i];
103
104 if (skipNulls && obj[key] === null) {
105 continue;
106 }
107
108 if (isArray(obj)) {
109 pushToArray(values, stringify(
110 obj[key],
111 typeof generateArrayPrefix === 'function' ? generateArrayPrefix(prefix, key) : prefix,
112 generateArrayPrefix,
113 strictNullHandling,
114 skipNulls,
115 encoder,
116 filter,
117 sort,
118 allowDots,
119 serializeDate,
120 formatter,
121 encodeValuesOnly,
122 charset
123 ));
124 } else {
125 pushToArray(values, stringify(
126 obj[key],
127 prefix + (allowDots ? '.' + key : '[' + key + ']'),
128 generateArrayPrefix,
129 strictNullHandling,
130 skipNulls,
131 encoder,
132 filter,
133 sort,
134 allowDots,
135 serializeDate,
136 formatter,
137 encodeValuesOnly,
138 charset
139 ));
140 }
141 }
142
143 return values;
144};
145
146var normalizeStringifyOptions = function normalizeStringifyOptions(opts) {
147 if (!opts) {
148 return defaults;
149 }
150
151 if (opts.encoder !== null && opts.encoder !== undefined && typeof opts.encoder !== 'function') {
152 throw new TypeError('Encoder has to be a function.');
153 }
154
155 var charset = opts.charset || defaults.charset;
156 if (typeof opts.charset !== 'undefined' && opts.charset !== 'utf-8' && opts.charset !== 'iso-8859-1') {
157 throw new TypeError('The charset option must be either utf-8, iso-8859-1, or undefined');
158 }
159
160 var format = formats['default'];
161 if (typeof opts.format !== 'undefined') {
162 if (!has.call(formats.formatters, opts.format)) {
163 throw new TypeError('Unknown format option provided.');
164 }
165 format = opts.format;
166 }
167 var formatter = formats.formatters[format];
168
169 var filter = defaults.filter;
170 if (typeof opts.filter === 'function' || isArray(opts.filter)) {
171 filter = opts.filter;
172 }
173
174 return {
175 addQueryPrefix: typeof opts.addQueryPrefix === 'boolean' ? opts.addQueryPrefix : defaults.addQueryPrefix,
176 allowDots: typeof opts.allowDots === 'undefined' ? defaults.allowDots : !!opts.allowDots,
177 charset: charset,
178 charsetSentinel: typeof opts.charsetSentinel === 'boolean' ? opts.charsetSentinel : defaults.charsetSentinel,
179 delimiter: typeof opts.delimiter === 'undefined' ? defaults.delimiter : opts.delimiter,
180 encode: typeof opts.encode === 'boolean' ? opts.encode : defaults.encode,
181 encoder: typeof opts.encoder === 'function' ? opts.encoder : defaults.encoder,
182 encodeValuesOnly: typeof opts.encodeValuesOnly === 'boolean' ? opts.encodeValuesOnly : defaults.encodeValuesOnly,
183 filter: filter,
184 formatter: formatter,
185 serializeDate: typeof opts.serializeDate === 'function' ? opts.serializeDate : defaults.serializeDate,
186 skipNulls: typeof opts.skipNulls === 'boolean' ? opts.skipNulls : defaults.skipNulls,
187 sort: typeof opts.sort === 'function' ? opts.sort : null,
188 strictNullHandling: typeof opts.strictNullHandling === 'boolean' ? opts.strictNullHandling : defaults.strictNullHandling
189 };
190};
191
192module.exports = function (object, opts) {
193 var obj = object;
194 var options = normalizeStringifyOptions(opts);
195
196 var objKeys;
197 var filter;
198
199 if (typeof options.filter === 'function') {
200 filter = options.filter;
201 obj = filter('', obj);
202 } else if (isArray(options.filter)) {
203 filter = options.filter;
204 objKeys = filter;
205 }
206
207 var keys = [];
208
209 if (typeof obj !== 'object' || obj === null) {
210 return '';
211 }
212
213 var arrayFormat;
214 if (opts && opts.arrayFormat in arrayPrefixGenerators) {
215 arrayFormat = opts.arrayFormat;
216 } else if (opts && 'indices' in opts) {
217 arrayFormat = opts.indices ? 'indices' : 'repeat';
218 } else {
219 arrayFormat = 'indices';
220 }
221
222 var generateArrayPrefix = arrayPrefixGenerators[arrayFormat];
223
224 if (!objKeys) {
225 objKeys = Object.keys(obj);
226 }
227
228 if (options.sort) {
229 objKeys.sort(options.sort);
230 }
231
232 for (var i = 0; i < objKeys.length; ++i) {
233 var key = objKeys[i];
234
235 if (options.skipNulls && obj[key] === null) {
236 continue;
237 }
238 pushToArray(keys, stringify(
239 obj[key],
240 key,
241 generateArrayPrefix,
242 options.strictNullHandling,
243 options.skipNulls,
244 options.encode ? options.encoder : null,
245 options.filter,
246 options.sort,
247 options.allowDots,
248 options.serializeDate,
249 options.formatter,
250 options.encodeValuesOnly,
251 options.charset
252 ));
253 }
254
255 var joined = keys.join(options.delimiter);
256 var prefix = options.addQueryPrefix === true ? '?' : '';
257
258 if (options.charsetSentinel) {
259 if (options.charset === 'iso-8859-1') {
260 // encodeURIComponent('&#10003;'), the "numeric entity" representation of a checkmark
261 prefix += 'utf8=%26%2310003%3B&';
262 } else {
263 // encodeURIComponent('✓')
264 prefix += 'utf8=%E2%9C%93&';
265 }
266 }
267
268 return joined.length > 0 ? prefix + joined : '';
269};
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