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120 office 1 <?php
2  
3 /*
4 * This file is part of the Symfony package.
5 *
6 * (c) Fabien Potencier <fabien@symfony.com>
7 *
8 * For the full copyright and license information, please view the LICENSE
9 * file that was distributed with this source code.
10 */
11  
12 namespace Symfony\Component\Finder\Iterator;
13  
14 /**
15 * CustomFilterIterator filters files by applying anonymous functions.
16 *
17 * The anonymous function receives a \SplFileInfo and must return false
18 * to remove files.
19 *
20 * @author Fabien Potencier <fabien@symfony.com>
21 */
22 class CustomFilterIterator extends FilterIterator
23 {
24 private $filters = array();
25  
26 /**
27 * Constructor.
28 *
29 * @param \Iterator $iterator The Iterator to filter
30 * @param callable[] $filters An array of PHP callbacks
31 *
32 * @throws \InvalidArgumentException
33 */
34 public function __construct(\Iterator $iterator, array $filters)
35 {
36 foreach ($filters as $filter) {
37 if (!is_callable($filter)) {
38 throw new \InvalidArgumentException('Invalid PHP callback.');
39 }
40 }
41 $this->filters = $filters;
42  
43 parent::__construct($iterator);
44 }
45  
46 /**
47 * Filters the iterator values.
48 *
49 * @return bool true if the value should be kept, false otherwise
50 */
51 public function accept()
52 {
53 $fileinfo = $this->current();
54  
55 foreach ($this->filters as $filter) {
56 if (false === call_user_func($filter, $fileinfo)) {
57 return false;
58 }
59 }
60  
61 return true;
62 }
63 }