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pictcode / lib / Cake / Utility / Set.php @ 635eef61

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1 635eef61 spyder1211
<?php
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/**
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 * Library of array functions for Cake.
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 *
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 * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
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 * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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 *
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 * Licensed under The MIT License
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 * For full copyright and license information, please see the LICENSE.txt
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 * Redistributions of files must retain the above copyright notice.
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 *
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 * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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 * @link          http://cakephp.org CakePHP(tm) Project
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 * @package       Cake.Utility
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 * @since         CakePHP(tm) v 1.2.0
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 * @license       http://www.opensource.org/licenses/mit-license.php MIT License
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 */
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19
App::uses('CakeText', 'Utility');
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App::uses('Hash', 'Utility');
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22
/**
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 * Class used for manipulation of arrays.
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 *
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 * @package       Cake.Utility
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 * @deprecated 3.0.0 Will be removed in 3.0. Use Hash instead.
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 */
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class Set {
29
30
/**
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 * This function can be thought of as a hybrid between PHP's array_merge and array_merge_recursive. The difference
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 * to the two is that if an array key contains another array then the function behaves recursive (unlike array_merge)
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 * but does not do if for keys containing strings (unlike array_merge_recursive).
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 *
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 * Since this method emulates `array_merge`, it will re-order numeric keys. When combined with out of
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 * order numeric keys containing arrays, results can be lossy.
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 *
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 * Note: This function will work with an unlimited amount of arguments and typecasts non-array
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 * parameters into arrays.
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 *
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 * @param array $data Array to be merged
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 * @param array $merge Array to merge with
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 * @return array Merged array
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 * @link http://book.cakephp.org/2.0/en/core-utility-libraries/set.html#Set::merge
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 */
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        public static function merge($data, $merge = null) {
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                $args = func_get_args();
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                if (empty($args[1]) && count($args) <= 2) {
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                        return (array)$args[0];
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                }
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                if (!is_array($args[0])) {
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                        $args[0] = (array)$args[0];
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                }
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                return call_user_func_array('Hash::merge', $args);
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        }
56
57
/**
58
 * Filters empty elements out of a route array, excluding '0'.
59
 *
60
 * @param array $var Either an array to filter, or value when in callback
61
 * @return mixed Either filtered array, or true/false when in callback
62
 * @link http://book.cakephp.org/2.0/en/core-utility-libraries/set.html#Set::filter
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 */
64
        public static function filter(array $var) {
65
                return Hash::filter($var);
66
        }
67
68
/**
69
 * Pushes the differences in $array2 onto the end of $array
70
 *
71
 * @param array $array Original array
72
 * @param array $array2 Differences to push
73
 * @return array Combined array
74
 * @link http://book.cakephp.org/2.0/en/core-utility-libraries/set.html#Set::pushDiff
75
 */
76
        public static function pushDiff($array, $array2) {
77
                if (empty($array) && !empty($array2)) {
78
                        return $array2;
79
                }
80
                if (!empty($array) && !empty($array2)) {
81
                        foreach ($array2 as $key => $value) {
82
                                if (!array_key_exists($key, $array)) {
83
                                        $array[$key] = $value;
84
                                } else {
85
                                        if (is_array($value)) {
86
                                                $array[$key] = Set::pushDiff($array[$key], $array2[$key]);
87
                                        }
88
                                }
89
                        }
90
                }
91
                return $array;
92
        }
93
94
/**
95
 * Maps the contents of the Set object to an object hierarchy.
96
 * Maintains numeric keys as arrays of objects
97
 *
98
 * @param string $class A class name of the type of object to map to
99
 * @param string $tmp A temporary class name used as $class if $class is an array
100
 * @return object|null Hierarchical object
101
 * @link http://book.cakephp.org/2.0/en/core-utility-libraries/set.html#Set::map
102
 */
103
        public static function map($class = 'stdClass', $tmp = 'stdClass') {
104
                if (is_array($class)) {
105
                        $val = $class;
106
                        $class = $tmp;
107
                }
108
109
                if (empty($val)) {
110
                        return null;
111
                }
112
                return Set::_map($val, $class);
113
        }
114
115
/**
116
 * Maps the given value as an object. If $value is an object,
117
 * it returns $value. Otherwise it maps $value as an object of
118
 * type $class, and if primary assign _name_ $key on first array.
119
 * If $value is not empty, it will be used to set properties of
120
 * returned object (recursively). If $key is numeric will maintain array
121
 * structure
122
 *
123
 * @param array &$array Array to map
124
 * @param string $class Class name
125
 * @param bool $primary whether to assign first array key as the _name_
126
 * @return mixed Mapped object
127
 */
128
        protected static function _map(&$array, $class, $primary = false) {
129
                if ($class === true) {
130
                        $out = new stdClass;
131
                } else {
132
                        $out = new $class;
133
                }
134
                if (is_array($array)) {
135
                        $keys = array_keys($array);
136
                        foreach ($array as $key => $value) {
137
                                if ($keys[0] === $key && $class !== true) {
138
                                        $primary = true;
139
                                }
140
                                if (is_numeric($key)) {
141
                                        if (is_object($out)) {
142
                                                $out = get_object_vars($out);
143
                                        }
144
                                        $out[$key] = Set::_map($value, $class);
145
                                        if (is_object($out[$key])) {
146
                                                if ($primary !== true && is_array($value) && Set::countDim($value, true) === 2) {
147
                                                        if (!isset($out[$key]->_name_)) {
148
                                                                $out[$key]->_name_ = $primary;
149
                                                        }
150
                                                }
151
                                        }
152
                                } elseif (is_array($value)) {
153
                                        if ($primary === true) {
154
                                                // @codingStandardsIgnoreStart Legacy junk
155
                                                if (!isset($out->_name_)) {
156
                                                        $out->_name_ = $key;
157
                                                }
158
                                                // @codingStandardsIgnoreEnd
159
                                                $primary = false;
160
                                                foreach ($value as $key2 => $value2) {
161
                                                        $out->{$key2} = Set::_map($value2, true);
162
                                                }
163
                                        } else {
164
                                                if (!is_numeric($key)) {
165
                                                        $out->{$key} = Set::_map($value, true, $key);
166
                                                        if (is_object($out->{$key}) && !is_numeric($key)) {
167
                                                                if (!isset($out->{$key}->_name_)) {
168
                                                                        $out->{$key}->_name_ = $key;
169
                                                                }
170
                                                        }
171
                                                } else {
172
                                                        $out->{$key} = Set::_map($value, true);
173
                                                }
174
                                        }
175
                                } else {
176
                                        $out->{$key} = $value;
177
                                }
178
                        }
179
                } else {
180
                        $out = $array;
181
                }
182
                return $out;
183
        }
184
185
/**
186
 * Checks to see if all the values in the array are numeric
187
 *
188
 * @param array $array The array to check. If null, the value of the current Set object
189
 * @return bool true if values are numeric, false otherwise
190
 * @link http://book.cakephp.org/2.0/en/core-utility-libraries/set.html#Set::numeric
191
 */
192
        public static function numeric($array = null) {
193
                return Hash::numeric($array);
194
        }
195
196
/**
197
 * Return a value from an array list if the key exists.
198
 *
199
 * If a comma separated $list is passed arrays are numeric with the key of the first being 0
200
 * $list = 'no, yes' would translate to  $list = array(0 => 'no', 1 => 'yes');
201
 *
202
 * If an array is used, keys can be strings example: array('no' => 0, 'yes' => 1);
203
 *
204
 * $list defaults to 0 = no 1 = yes if param is not passed
205
 *
206
 * @param string $select Key in $list to return
207
 * @param array|string $list can be an array or a comma-separated list.
208
 * @return string the value of the array key or null if no match
209
 * @link http://book.cakephp.org/2.0/en/core-utility-libraries/set.html#Set::enum
210
 */
211
        public static function enum($select, $list = null) {
212
                if (empty($list)) {
213
                        $list = array('no', 'yes');
214
                }
215
216
                $return = null;
217
                $list = Set::normalize($list, false);
218
219
                if (array_key_exists($select, $list)) {
220
                        $return = $list[$select];
221
                }
222
                return $return;
223
        }
224
225
/**
226
 * Returns a series of values extracted from an array, formatted in a format string.
227
 *
228
 * @param array $data Source array from which to extract the data
229
 * @param string $format Format string into which values will be inserted, see sprintf()
230
 * @param array $keys An array containing one or more Set::extract()-style key paths
231
 * @return array|null An array of strings extracted from $keys and formatted with $format, otherwise null.
232
 * @link http://book.cakephp.org/2.0/en/core-utility-libraries/set.html#Set::format
233
 */
234
        public static function format($data, $format, $keys) {
235
                $extracted = array();
236
                $count = count($keys);
237
238
                if (!$count) {
239
                        return null;
240
                }
241
242
                for ($i = 0; $i < $count; $i++) {
243
                        $extracted[] = Set::extract($data, $keys[$i]);
244
                }
245
                $out = array();
246
                $data = $extracted;
247
                $count = count($data[0]);
248
249
                if (preg_match_all('/\{([0-9]+)\}/msi', $format, $keys2) && isset($keys2[1])) {
250
                        $keys = $keys2[1];
251
                        $format = preg_split('/\{([0-9]+)\}/msi', $format);
252
                        $count2 = count($format);
253
254
                        for ($j = 0; $j < $count; $j++) {
255
                                $formatted = '';
256
                                for ($i = 0; $i <= $count2; $i++) {
257
                                        if (isset($format[$i])) {
258
                                                $formatted .= $format[$i];
259
                                        }
260
                                        if (isset($keys[$i]) && isset($data[$keys[$i]][$j])) {
261
                                                $formatted .= $data[$keys[$i]][$j];
262
                                        }
263
                                }
264
                                $out[] = $formatted;
265
                        }
266
                } else {
267
                        $count2 = count($data);
268
                        for ($j = 0; $j < $count; $j++) {
269
                                $args = array();
270
                                for ($i = 0; $i < $count2; $i++) {
271
                                        if (array_key_exists($j, $data[$i])) {
272
                                                $args[] = $data[$i][$j];
273
                                        }
274
                                }
275
                                $out[] = vsprintf($format, $args);
276
                        }
277
                }
278
                return $out;
279
        }
280
281
/**
282
 * Implements partial support for XPath 2.0. If $path does not contain a '/' the call
283
 * is delegated to Set::classicExtract(). Also the $path and $data arguments are
284
 * reversible.
285
 *
286
 * #### Currently implemented selectors:
287
 *
288
 * - /User/id (similar to the classic {n}.User.id)
289
 * - /User[2]/name (selects the name of the second User)
290
 * - /User[id>2] (selects all Users with an id > 2)
291
 * - /User[id>2][<5] (selects all Users with an id > 2 but < 5)
292
 * - /Post/Comment[author_name=john]/../name (Selects the name of all Posts that have at least one Comment written by john)
293
 * - /Posts[name] (Selects all Posts that have a 'name' key)
294
 * - /Comment/.[1] (Selects the contents of the first comment)
295
 * - /Comment/.[:last] (Selects the last comment)
296
 * - /Comment/.[:first] (Selects the first comment)
297
 * - /Comment[text=/cakephp/i] (Selects the all comments that have a text matching the regex /cakephp/i)
298
 * - /Comment/@* (Selects the all key names of all comments)
299
 *
300
 * #### Other limitations:
301
 *
302
 * - Only absolute paths starting with a single '/' are supported right now
303
 *
304
 * **Warning**: Even so it has plenty of unit tests the XPath support has not gone through a lot of
305
 * real-world testing. Please report Bugs as you find them. Suggestions for additional features to
306
 * implement are also very welcome!
307
 *
308
 * @param string $path An absolute XPath 2.0 path
309
 * @param array $data An array of data to extract from
310
 * @param array $options Currently only supports 'flatten' which can be disabled for higher XPath-ness
311
 * @return mixed An array of matched items or the content of a single selected item or null in any of these cases: $path or $data are null, no items found.
312
 * @link http://book.cakephp.org/2.0/en/core-utility-libraries/set.html#Set::extract
313
 */
314
        public static function extract($path, $data = null, $options = array()) {
315
                if (is_string($data)) {
316
                        $tmp = $data;
317
                        $data = $path;
318
                        $path = $tmp;
319
                }
320
                if (strpos($path, '/') === false) {
321
                        return Set::classicExtract($data, $path);
322
                }
323
                if (empty($data)) {
324
                        return array();
325
                }
326
                if ($path === '/') {
327
                        return $data;
328
                }
329
                $contexts = $data;
330
                $options += array('flatten' => true);
331
                if (!isset($contexts[0])) {
332
                        $current = current($data);
333
                        if ((is_array($current) && count($data) < 1) || !is_array($current) || !Set::numeric(array_keys($data))) {
334
                                $contexts = array($data);
335
                        }
336
                }
337
                $tokens = array_slice(preg_split('/(?<!=|\\\\)\/(?![a-z-\s]*\])/', $path), 1);
338
339
                do {
340
                        $token = array_shift($tokens);
341
                        $conditions = false;
342
                        if (preg_match_all('/\[([^=]+=\/[^\/]+\/|[^\]]+)\]/', $token, $m)) {
343
                                $conditions = $m[1];
344
                                $token = substr($token, 0, strpos($token, '['));
345
                        }
346
                        $matches = array();
347
                        foreach ($contexts as $key => $context) {
348
                                if (!isset($context['trace'])) {
349
                                        $context = array('trace' => array(null), 'item' => $context, 'key' => $key);
350
                                }
351
                                if ($token === '..') {
352
                                        if (count($context['trace']) === 1) {
353
                                                $context['trace'][] = $context['key'];
354
                                        }
355
                                        $parent = implode('/', $context['trace']) . '/.';
356
                                        $context['item'] = Set::extract($parent, $data);
357
                                        $context['key'] = array_pop($context['trace']);
358
                                        if (isset($context['trace'][1]) && $context['trace'][1] > 0) {
359
                                                $context['item'] = $context['item'][0];
360
                                        } elseif (!empty($context['item'][$key])) {
361
                                                $context['item'] = $context['item'][$key];
362
                                        } else {
363
                                                $context['item'] = array_shift($context['item']);
364
                                        }
365
                                        $matches[] = $context;
366
                                        continue;
367
                                }
368
                                if ($token === '@*' && is_array($context['item'])) {
369
                                        $matches[] = array(
370
                                                'trace' => array_merge($context['trace'], (array)$key),
371
                                                'key' => $key,
372
                                                'item' => array_keys($context['item']),
373
                                        );
374
                                } elseif (is_array($context['item'])
375
                                        && array_key_exists($token, $context['item'])
376
                                        && !(strval($key) === strval($token) && count($tokens) === 1 && $tokens[0] === '.')) {
377
                                        $items = $context['item'][$token];
378
                                        if (!is_array($items)) {
379
                                                $items = array($items);
380
                                        } elseif (!isset($items[0])) {
381
                                                $current = current($items);
382
                                                $currentKey = key($items);
383
                                                if (!is_array($current) || (is_array($current) && count($items) <= 1 && !is_numeric($currentKey))) {
384
                                                        $items = array($items);
385
                                                }
386
                                        }
387
388
                                        foreach ($items as $key => $item) {
389
                                                $ctext = array($context['key']);
390
                                                if (!is_numeric($key)) {
391
                                                        $ctext[] = $token;
392
                                                        $tok = array_shift($tokens);
393
                                                        if (isset($items[$tok])) {
394
                                                                $ctext[] = $tok;
395
                                                                $item = $items[$tok];
396
                                                                $matches[] = array(
397
                                                                        'trace' => array_merge($context['trace'], $ctext),
398
                                                                        'key' => $tok,
399
                                                                        'item' => $item,
400
                                                                );
401
                                                                break;
402
                                                        } elseif ($tok !== null) {
403
                                                                array_unshift($tokens, $tok);
404
                                                        }
405
                                                } else {
406
                                                        $key = $token;
407
                                                }
408
409
                                                $matches[] = array(
410
                                                        'trace' => array_merge($context['trace'], $ctext),
411
                                                        'key' => $key,
412
                                                        'item' => $item,
413
                                                );
414
                                        }
415
                                } elseif ($key === $token || (ctype_digit($token) && $key == $token) || $token === '.') {
416
                                        $context['trace'][] = $key;
417
                                        $matches[] = array(
418
                                                'trace' => $context['trace'],
419
                                                'key' => $key,
420
                                                'item' => $context['item'],
421
                                        );
422
                                }
423
                        }
424
                        if ($conditions) {
425
                                foreach ($conditions as $condition) {
426
                                        $filtered = array();
427
                                        $length = count($matches);
428
                                        foreach ($matches as $i => $match) {
429
                                                if (Set::matches(array($condition), $match['item'], $i + 1, $length)) {
430
                                                        $filtered[$i] = $match;
431
                                                }
432
                                        }
433
                                        $matches = $filtered;
434
                                }
435
                        }
436
                        $contexts = $matches;
437
438
                        if (empty($tokens)) {
439
                                break;
440
                        }
441
                } while (1);
442
443
                $r = array();
444
445
                foreach ($matches as $match) {
446
                        if ((!$options['flatten'] || is_array($match['item'])) && !is_int($match['key'])) {
447
                                $r[] = array($match['key'] => $match['item']);
448
                        } else {
449
                                $r[] = $match['item'];
450
                        }
451
                }
452
                return $r;
453
        }
454
455
/**
456
 * This function can be used to see if a single item or a given xpath match certain conditions.
457
 *
458
 * @param string|array $conditions An array of condition strings or an XPath expression
459
 * @param array $data An array of data to execute the match on
460
 * @param int $i Optional: The 'nth'-number of the item being matched.
461
 * @param int $length Length.
462
 * @return bool
463
 * @link http://book.cakephp.org/2.0/en/core-utility-libraries/set.html#Set::matches
464
 */
465
        public static function matches($conditions, $data = array(), $i = null, $length = null) {
466
                if (empty($conditions)) {
467
                        return true;
468
                }
469
                if (is_string($conditions)) {
470
                        return (bool)Set::extract($conditions, $data);
471
                }
472
                foreach ($conditions as $condition) {
473
                        if ($condition === ':last') {
474
                                if ($i != $length) {
475
                                        return false;
476
                                }
477
                                continue;
478
                        } elseif ($condition === ':first') {
479
                                if ($i != 1) {
480
                                        return false;
481
                                }
482
                                continue;
483
                        }
484
                        if (!preg_match('/(.+?)([><!]?[=]|[><])(.*)/', $condition, $match)) {
485
                                if (ctype_digit($condition)) {
486
                                        if ($i != $condition) {
487
                                                return false;
488
                                        }
489
                                } elseif (preg_match_all('/(?:^[0-9]+|(?<=,)[0-9]+)/', $condition, $matches)) {
490
                                        return in_array($i, $matches[0]);
491
                                } elseif (!array_key_exists($condition, $data)) {
492
                                        return false;
493
                                }
494
                                continue;
495
                        }
496
                        list(, $key, $op, $expected) = $match;
497
                        if (!(isset($data[$key]) || array_key_exists($key, $data))) {
498
                                return false;
499
                        }
500
501
                        $val = $data[$key];
502
503
                        if ($op === '=' && $expected && $expected{0} === '/') {
504
                                return preg_match($expected, $val);
505
                        }
506
                        if ($op === '=' && $val != $expected) {
507
                                return false;
508
                        }
509
                        if ($op === '!=' && $val == $expected) {
510
                                return false;
511
                        }
512
                        if ($op === '>' && $val <= $expected) {
513
                                return false;
514
                        }
515
                        if ($op === '<' && $val >= $expected) {
516
                                return false;
517
                        }
518
                        if ($op === '<=' && $val > $expected) {
519
                                return false;
520
                        }
521
                        if ($op === '>=' && $val < $expected) {
522
                                return false;
523
                        }
524
                }
525
                return true;
526
        }
527
528
/**
529
 * Gets a value from an array or object that is contained in a given path using an array path syntax, i.e.:
530
 * "{n}.Person.{[a-z]+}" - Where "{n}" represents a numeric key, "Person" represents a string literal,
531
 * and "{[a-z]+}" (i.e. any string literal enclosed in brackets besides {n} and {s}) is interpreted as
532
 * a regular expression.
533
 *
534
 * @param array $data Array from where to extract
535
 * @param string|array $path As an array, or as a dot-separated string.
536
 * @return mixed An array of matched items or the content of a single selected item or null in any of these cases: $path or $data are null, no items found.
537
 * @link http://book.cakephp.org/2.0/en/core-utility-libraries/set.html#Set::classicExtract
538
 */
539
        public static function classicExtract($data, $path = null) {
540
                if (empty($path)) {
541
                        return $data;
542
                }
543
                if (is_object($data)) {
544
                        if (!($data instanceof ArrayAccess || $data instanceof Traversable)) {
545
                                $data = get_object_vars($data);
546
                        }
547
                }
548
                if (empty($data)) {
549
                        return null;
550
                }
551
                if (is_string($path) && strpos($path, '{') !== false) {
552
                        $path = CakeText::tokenize($path, '.', '{', '}');
553
                } elseif (is_string($path)) {
554
                        $path = explode('.', $path);
555
                }
556
                $tmp = array();
557
558
                if (empty($path)) {
559
                        return null;
560
                }
561
562
                foreach ($path as $i => $key) {
563
                        if (is_numeric($key) && (int)$key > 0 || $key === '0') {
564
                                if (isset($data[$key])) {
565
                                        $data = $data[$key];
566
                                } else {
567
                                        return null;
568
                                }
569
                        } elseif ($key === '{n}') {
570
                                foreach ($data as $j => $val) {
571
                                        if (is_int($j)) {
572
                                                $tmpPath = array_slice($path, $i + 1);
573
                                                if (empty($tmpPath)) {
574
                                                        $tmp[] = $val;
575
                                                } else {
576
                                                        $tmp[] = Set::classicExtract($val, $tmpPath);
577
                                                }
578
                                        }
579
                                }
580
                                return $tmp;
581
                        } elseif ($key === '{s}') {
582
                                foreach ($data as $j => $val) {
583
                                        if (is_string($j)) {
584
                                                $tmpPath = array_slice($path, $i + 1);
585
                                                if (empty($tmpPath)) {
586
                                                        $tmp[] = $val;
587
                                                } else {
588
                                                        $tmp[] = Set::classicExtract($val, $tmpPath);
589
                                                }
590
                                        }
591
                                }
592
                                return $tmp;
593
                        } elseif (strpos($key, '{') !== false && strpos($key, '}') !== false) {
594
                                $pattern = substr($key, 1, -1);
595
596
                                foreach ($data as $j => $val) {
597
                                        if (preg_match('/^' . $pattern . '/s', $j) !== 0) {
598
                                                $tmpPath = array_slice($path, $i + 1);
599
                                                if (empty($tmpPath)) {
600
                                                        $tmp[$j] = $val;
601
                                                } else {
602
                                                        $tmp[$j] = Set::classicExtract($val, $tmpPath);
603
                                                }
604
                                        }
605
                                }
606
                                return $tmp;
607
                        } else {
608
                                if (isset($data[$key])) {
609
                                        $data = $data[$key];
610
                                } else {
611
                                        return null;
612
                                }
613
                        }
614
                }
615
                return $data;
616
        }
617
618
/**
619
 * Inserts $data into an array as defined by $path.
620
 *
621
 * @param array $list Where to insert into
622
 * @param string $path A dot-separated string.
623
 * @param array $data Data to insert
624
 * @return array
625
 * @link http://book.cakephp.org/2.0/en/core-utility-libraries/set.html#Set::insert
626
 */
627
        public static function insert($list, $path, $data = null) {
628
                return Hash::insert($list, $path, $data);
629
        }
630
631
/**
632
 * Removes an element from a Set or array as defined by $path.
633
 *
634
 * @param array $list From where to remove
635
 * @param string $path A dot-separated string.
636
 * @return array Array with $path removed from its value
637
 * @link http://book.cakephp.org/2.0/en/core-utility-libraries/set.html#Set::remove
638
 */
639
        public static function remove($list, $path = null) {
640
                return Hash::remove($list, $path);
641
        }
642
643
/**
644
 * Checks if a particular path is set in an array
645
 *
646
 * @param string|array $data Data to check on
647
 * @param string|array $path A dot-separated string.
648
 * @return bool true if path is found, false otherwise
649
 * @link http://book.cakephp.org/2.0/en/core-utility-libraries/set.html#Set::check
650
 */
651
        public static function check($data, $path = null) {
652
                if (empty($path)) {
653
                        return $data;
654
                }
655
                if (!is_array($path)) {
656
                        $path = explode('.', $path);
657
                }
658
659
                foreach ($path as $i => $key) {
660
                        if (is_numeric($key) && (int)$key > 0 || $key === '0') {
661
                                $key = (int)$key;
662
                        }
663
                        if ($i === count($path) - 1) {
664
                                return (is_array($data) && array_key_exists($key, $data));
665
                        }
666
667
                        if (!is_array($data) || !array_key_exists($key, $data)) {
668
                                return false;
669
                        }
670
                        $data =& $data[$key];
671
                }
672
                return true;
673
        }
674
675
/**
676
 * Computes the difference between a Set and an array, two Sets, or two arrays
677
 *
678
 * @param mixed $val1 First value
679
 * @param mixed $val2 Second value
680
 * @return array Returns the key => value pairs that are not common in $val1 and $val2
681
 * The expression for this function is($val1 - $val2) + ($val2 - ($val1 - $val2))
682
 * @link http://book.cakephp.org/2.0/en/core-utility-libraries/set.html#Set::diff
683
 */
684
        public static function diff($val1, $val2 = null) {
685
                if (empty($val1)) {
686
                        return (array)$val2;
687
                }
688
                if (empty($val2)) {
689
                        return (array)$val1;
690
                }
691
                $intersection = array_intersect_key($val1, $val2);
692
                while (($key = key($intersection)) !== null) {
693
                        if ($val1[$key] == $val2[$key]) {
694
                                unset($val1[$key]);
695
                                unset($val2[$key]);
696
                        }
697
                        next($intersection);
698
                }
699
700
                return $val1 + $val2;
701
        }
702
703
/**
704
 * Determines if one Set or array contains the exact keys and values of another.
705
 *
706
 * @param array $val1 First value
707
 * @param array $val2 Second value
708
 * @return bool true if $val1 contains $val2, false otherwise
709
 * @link http://book.cakephp.org/2.0/en/core-utility-libraries/set.html#Set::contains
710
 */
711
        public static function contains($val1, $val2 = null) {
712
                if (empty($val1) || empty($val2)) {
713
                        return false;
714
                }
715
716
                foreach ($val2 as $key => $val) {
717
                        if (is_numeric($key)) {
718
                                Set::contains($val, $val1);
719
                        } else {
720
                                if (!isset($val1[$key]) || $val1[$key] != $val) {
721
                                        return false;
722
                                }
723
                        }
724
                }
725
                return true;
726
        }
727
728
/**
729
 * Counts the dimensions of an array. If $all is set to false (which is the default) it will
730
 * only consider the dimension of the first element in the array.
731
 *
732
 * @param array $array Array to count dimensions on
733
 * @param bool $all Set to true to count the dimension considering all elements in array
734
 * @param int $count Start the dimension count at this number
735
 * @return int The number of dimensions in $array
736
 * @link http://book.cakephp.org/2.0/en/core-utility-libraries/set.html#Set::countDim
737
 */
738
        public static function countDim($array, $all = false, $count = 0) {
739
                if ($all) {
740
                        $depth = array($count);
741
                        if (is_array($array) && reset($array) !== false) {
742
                                foreach ($array as $value) {
743
                                        $depth[] = Set::countDim($value, true, $count + 1);
744
                                }
745
                        }
746
                        $return = max($depth);
747
                } else {
748
                        if (is_array(reset($array))) {
749
                                $return = Set::countDim(reset($array)) + 1;
750
                        } else {
751
                                $return = 1;
752
                        }
753
                }
754
                return $return;
755
        }
756
757
/**
758
 * Normalizes a string or array list.
759
 *
760
 * @param mixed $list List to normalize
761
 * @param bool $assoc If true, $list will be converted to an associative array
762
 * @param string $sep If $list is a string, it will be split into an array with $sep
763
 * @param bool $trim If true, separated strings will be trimmed
764
 * @return array
765
 * @link http://book.cakephp.org/2.0/en/core-utility-libraries/set.html#Set::normalize
766
 */
767
        public static function normalize($list, $assoc = true, $sep = ',', $trim = true) {
768
                if (is_string($list)) {
769
                        $list = explode($sep, $list);
770
                        if ($trim) {
771
                                foreach ($list as $key => $value) {
772
                                        $list[$key] = trim($value);
773
                                }
774
                        }
775
                        if ($assoc) {
776
                                return Hash::normalize($list);
777
                        }
778
                } elseif (is_array($list)) {
779
                        $list = Hash::normalize($list, $assoc);
780
                }
781
                return $list;
782
        }
783
784
/**
785
 * Creates an associative array using a $path1 as the path to build its keys, and optionally
786
 * $path2 as path to get the values. If $path2 is not specified, all values will be initialized
787
 * to null (useful for Set::merge). You can optionally group the values by what is obtained when
788
 * following the path specified in $groupPath.
789
 *
790
 * @param array|object $data Array or object from where to extract keys and values
791
 * @param string|array $path1 As an array, or as a dot-separated string.
792
 * @param string|array $path2 As an array, or as a dot-separated string.
793
 * @param string $groupPath As an array, or as a dot-separated string.
794
 * @return array Combined array
795
 * @link http://book.cakephp.org/2.0/en/core-utility-libraries/set.html#Set::combine
796
 */
797
        public static function combine($data, $path1 = null, $path2 = null, $groupPath = null) {
798
                if (empty($data)) {
799
                        return array();
800
                }
801
802
                if (is_object($data)) {
803
                        if (!($data instanceof ArrayAccess || $data instanceof Traversable)) {
804
                                $data = get_object_vars($data);
805
                        }
806
                }
807
808
                if (is_array($path1)) {
809
                        $format = array_shift($path1);
810
                        $keys = Set::format($data, $format, $path1);
811
                } else {
812
                        $keys = Set::extract($data, $path1);
813
                }
814
                if (empty($keys)) {
815
                        return array();
816
                }
817
818
                if (!empty($path2) && is_array($path2)) {
819
                        $format = array_shift($path2);
820
                        $vals = Set::format($data, $format, $path2);
821
                } elseif (!empty($path2)) {
822
                        $vals = Set::extract($data, $path2);
823
                } else {
824
                        $count = count($keys);
825
                        for ($i = 0; $i < $count; $i++) {
826
                                $vals[$i] = null;
827
                        }
828
                }
829
830
                if ($groupPath) {
831
                        $group = Set::extract($data, $groupPath);
832
                        if (!empty($group)) {
833
                                $c = count($keys);
834
                                for ($i = 0; $i < $c; $i++) {
835
                                        if (!isset($group[$i])) {
836
                                                $group[$i] = 0;
837
                                        }
838
                                        if (!isset($out[$group[$i]])) {
839
                                                $out[$group[$i]] = array();
840
                                        }
841
                                        $out[$group[$i]][$keys[$i]] = $vals[$i];
842
                                }
843
                                return $out;
844
                        }
845
                }
846
                if (empty($vals)) {
847
                        return array();
848
                }
849
                return array_combine($keys, $vals);
850
        }
851
852
/**
853
 * Converts an object into an array.
854
 *
855
 * @param object $object Object to reverse
856
 * @return array Array representation of given object
857
 * @link http://book.cakephp.org/2.0/en/core-utility-libraries/set.html#Set::reverse
858
 */
859
        public static function reverse($object) {
860
                $out = array();
861
                if ($object instanceof SimpleXMLElement) {
862
                        return Xml::toArray($object);
863
                } elseif (is_object($object)) {
864
                        $keys = get_object_vars($object);
865
                        if (isset($keys['_name_'])) {
866
                                $identity = $keys['_name_'];
867
                                unset($keys['_name_']);
868
                        }
869
                        $new = array();
870
                        foreach ($keys as $key => $value) {
871
                                if (is_array($value)) {
872
                                        $new[$key] = (array)Set::reverse($value);
873
                                } else {
874
                                        // @codingStandardsIgnoreStart Legacy junk
875
                                        if (isset($value->_name_)) {
876
                                                $new = array_merge($new, Set::reverse($value));
877
                                        } else {
878
                                                $new[$key] = Set::reverse($value);
879
                                        }
880
                                        // @codingStandardsIgnoreEnd
881
                                }
882
                        }
883
                        if (isset($identity)) {
884
                                $out[$identity] = $new;
885
                        } else {
886
                                $out = $new;
887
                        }
888
                } elseif (is_array($object)) {
889
                        foreach ($object as $key => $value) {
890
                                $out[$key] = Set::reverse($value);
891
                        }
892
                } else {
893
                        $out = $object;
894
                }
895
                return $out;
896
        }
897
898
/**
899
 * Collapses a multi-dimensional array into a single dimension, using a delimited array path for
900
 * each array element's key, i.e. array(array('Foo' => array('Bar' => 'Far'))) becomes
901
 * array('0.Foo.Bar' => 'Far').
902
 *
903
 * @param array $data Array to flatten
904
 * @param string $separator String used to separate array key elements in a path, defaults to '.'
905
 * @return array
906
 * @link http://book.cakephp.org/2.0/en/core-utility-libraries/set.html#Set::flatten
907
 */
908
        public static function flatten($data, $separator = '.') {
909
                return Hash::flatten($data, $separator);
910
        }
911
912
/**
913
 * Expand/unflattens a string to an array
914
 *
915
 * For example, unflattens an array that was collapsed with `Set::flatten()`
916
 * into a multi-dimensional array. So, `array('0.Foo.Bar' => 'Far')` becomes
917
 * `array(array('Foo' => array('Bar' => 'Far')))`.
918
 *
919
 * @param array $data Flattened array
920
 * @param string $separator The delimiter used
921
 * @return array
922
 */
923
        public static function expand($data, $separator = '.') {
924
                return Hash::expand($data, $separator);
925
        }
926
927
/**
928
 * Flattens an array for sorting
929
 *
930
 * @param array $results Array to flatten.
931
 * @param string $key Key.
932
 * @return array
933
 */
934
        protected static function _flatten($results, $key = null) {
935
                $stack = array();
936
                foreach ($results as $k => $r) {
937
                        $id = $k;
938
                        if ($key !== null) {
939
                                $id = $key;
940
                        }
941
                        if (is_array($r) && !empty($r)) {
942
                                $stack = array_merge($stack, Set::_flatten($r, $id));
943
                        } else {
944
                                $stack[] = array('id' => $id, 'value' => $r);
945
                        }
946
                }
947
                return $stack;
948
        }
949
950
/**
951
 * Sorts an array by any value, determined by a Set-compatible path
952
 *
953
 * @param array $data An array of data to sort
954
 * @param string $path A Set-compatible path to the array value
955
 * @param string $dir Direction of sorting - either ascending (ASC), or descending (DESC)
956
 * @return array Sorted array of data
957
 * @link http://book.cakephp.org/2.0/en/core-utility-libraries/set.html#Set::sort
958
 */
959
        public static function sort($data, $path, $dir) {
960
                if (empty($data)) {
961
                        return $data;
962
                }
963
                $originalKeys = array_keys($data);
964
                $numeric = false;
965
                if (is_numeric(implode('', $originalKeys))) {
966
                        $data = array_values($data);
967
                        $numeric = true;
968
                }
969
                $result = Set::_flatten(Set::extract($data, $path));
970
                list($keys, $values) = array(Set::extract($result, '{n}.id'), Set::extract($result, '{n}.value'));
971
972
                $dir = strtolower($dir);
973
                if ($dir === 'asc') {
974
                        $dir = SORT_ASC;
975
                } elseif ($dir === 'desc') {
976
                        $dir = SORT_DESC;
977
                }
978
                array_multisort($values, $dir, $keys, $dir);
979
                $sorted = array();
980
                $keys = array_unique($keys);
981
982
                foreach ($keys as $k) {
983
                        if ($numeric) {
984
                                $sorted[] = $data[$k];
985
                        } else {
986
                                if (isset($originalKeys[$k])) {
987
                                        $sorted[$originalKeys[$k]] = $data[$originalKeys[$k]];
988
                                } else {
989
                                        $sorted[$k] = $data[$k];
990
                                }
991
                        }
992
                }
993
                return $sorted;
994
        }
995
996
/**
997
 * Allows the application of a callback method to elements of an
998
 * array extracted by a Set::extract() compatible path.
999
 *
1000
 * @param mixed $path Set-compatible path to the array value
1001
 * @param array $data An array of data to extract from & then process with the $callback.
1002
 * @param mixed $callback Callback method to be applied to extracted data.
1003
 * See http://ca2.php.net/manual/en/language.pseudo-types.php#language.types.callback for examples
1004
 * of callback formats.
1005
 * @param array $options Options are:
1006
 *                       - type : can be pass, map, or reduce. Map will handoff the given callback
1007
 *                                to array_map, reduce will handoff to array_reduce, and pass will
1008
 *                                use call_user_func_array().
1009
 * @return mixed Result of the callback when applied to extracted data
1010
 * @link http://book.cakephp.org/2.0/en/core-utility-libraries/set.html#Set::apply
1011
 */
1012
        public static function apply($path, $data, $callback, $options = array()) {
1013
                $defaults = array('type' => 'pass');
1014
                $options += $defaults;
1015
                $extracted = Set::extract($path, $data);
1016
1017
                if ($options['type'] === 'map') {
1018
                        return array_map($callback, $extracted);
1019
                } elseif ($options['type'] === 'reduce') {
1020
                        return array_reduce($extracted, $callback);
1021
                } elseif ($options['type'] === 'pass') {
1022
                        return call_user_func_array($callback, array($extracted));
1023
                }
1024
                return null;
1025
        }
1026
1027
/**
1028
 * Takes in a flat array and returns a nested array
1029
 *
1030
 * @param mixed $data Data
1031
 * @param array $options Options are:
1032
 *      children   - the key name to use in the resultset for children
1033
 *      idPath     - the path to a key that identifies each entry
1034
 *      parentPath - the path to a key that identifies the parent of each entry
1035
 *      root       - the id of the desired top-most result
1036
 * @return array of results, nested
1037
 * @link
1038
 */
1039
        public static function nest($data, $options = array()) {
1040
                if (!$data) {
1041
                        return $data;
1042
                }
1043
1044
                $alias = key(current($data));
1045
                $options += array(
1046
                        'idPath' => "/$alias/id",
1047
                        'parentPath' => "/$alias/parent_id",
1048
                        'children' => 'children',
1049
                        'root' => null
1050
                );
1051
1052
                $return = $idMap = array();
1053
                $ids = Set::extract($data, $options['idPath']);
1054
                $idKeys = explode('/', trim($options['idPath'], '/'));
1055
                $parentKeys = explode('/', trim($options['parentPath'], '/'));
1056
1057
                foreach ($data as $result) {
1058
                        $result[$options['children']] = array();
1059
1060
                        $id = Set::get($result, $idKeys);
1061
                        $parentId = Set::get($result, $parentKeys);
1062
1063
                        if (isset($idMap[$id][$options['children']])) {
1064
                                $idMap[$id] = array_merge($result, (array)$idMap[$id]);
1065
                        } else {
1066
                                $idMap[$id] = array_merge($result, array($options['children'] => array()));
1067
                        }
1068
                        if (!$parentId || !in_array($parentId, $ids)) {
1069
                                $return[] =& $idMap[$id];
1070
                        } else {
1071
                                $idMap[$parentId][$options['children']][] =& $idMap[$id];
1072
                        }
1073
                }
1074
1075
                if ($options['root']) {
1076
                        $root = $options['root'];
1077
                } else {
1078
                        $root = Set::get($return[0], $parentKeys);
1079
                }
1080
1081
                foreach ($return as $i => $result) {
1082
                        $id = Set::get($result, $idKeys);
1083
                        $parentId = Set::get($result, $parentKeys);
1084
                        if ($id !== $root && $parentId != $root) {
1085
                                unset($return[$i]);
1086
                        }
1087
                }
1088
1089
                return array_values($return);
1090
        }
1091
1092
/**
1093
 * Return the value at the specified position
1094
 *
1095
 * @param array $input an array
1096
 * @param string|array $path string or array of array keys
1097
 * @return the value at the specified position or null if it doesn't exist
1098
 */
1099
        public static function get($input, $path = null) {
1100
                if (is_string($path)) {
1101
                        if (strpos($path, '/') !== false) {
1102
                                $keys = explode('/', trim($path, '/'));
1103
                        } else {
1104
                                $keys = explode('.', trim($path, '.'));
1105
                        }
1106
                } else {
1107
                        $keys = $path;
1108
                }
1109
                return Hash::get($input, $keys);
1110
        }
1111
1112
}