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