[7265] | 1 | <?php |
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| 2 | |
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| 3 | /* |
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| 4 | * This file is part of the Assetic package, an OpenSky project. |
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| 5 | * |
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| 6 | * (c) 2010-2012 OpenSky Project Inc |
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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 | |
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| 12 | namespace Assetic\Factory\Resource; |
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| 13 | |
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| 14 | /** |
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| 15 | * Coalesces multiple directories together into one merged resource. |
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| 16 | * |
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| 17 | * @author Kris Wallsmith <kris.wallsmith@gmail.com> |
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| 18 | */ |
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| 19 | class CoalescingDirectoryResource implements IteratorResourceInterface |
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| 20 | { |
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| 21 | private $directories; |
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| 22 | |
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| 23 | public function __construct($directories) |
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| 24 | { |
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| 25 | $this->directories = array(); |
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| 26 | |
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| 27 | foreach ($directories as $directory) { |
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| 28 | $this->addDirectory($directory); |
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| 29 | } |
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| 30 | } |
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| 31 | |
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| 32 | public function addDirectory(IteratorResourceInterface $directory) |
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| 33 | { |
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| 34 | $this->directories[] = $directory; |
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| 35 | } |
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| 36 | |
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| 37 | public function isFresh($timestamp) |
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| 38 | { |
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| 39 | foreach ($this->getFileResources() as $file) { |
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| 40 | if (!$file->isFresh($timestamp)) { |
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| 41 | return false; |
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| 42 | } |
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| 43 | } |
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| 44 | |
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| 45 | return true; |
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| 46 | } |
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| 47 | |
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| 48 | public function getContent() |
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| 49 | { |
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| 50 | $parts = array(); |
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| 51 | foreach ($this->getFileResources() as $file) { |
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| 52 | $parts[] = $file->getContent(); |
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| 53 | } |
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| 54 | |
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| 55 | return implode("\n", $parts); |
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| 56 | } |
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| 57 | |
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| 58 | /** |
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| 59 | * Returns a string to uniquely identify the current resource. |
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| 60 | * |
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| 61 | * @return string An identifying string |
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| 62 | */ |
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| 63 | public function __toString() |
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| 64 | { |
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| 65 | $parts = array(); |
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| 66 | foreach ($this->directories as $directory) { |
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| 67 | $parts[] = (string) $directory; |
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| 68 | } |
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| 69 | |
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| 70 | return implode(',', $parts); |
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| 71 | } |
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| 72 | |
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| 73 | public function getIterator() |
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| 74 | { |
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| 75 | return new \ArrayIterator($this->getFileResources()); |
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| 76 | } |
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| 77 | |
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| 78 | /** |
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| 79 | * Returns the relative version of a filename. |
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| 80 | * |
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| 81 | * @param ResourceInterface $file The file |
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| 82 | * @param ResourceInterface $directory The directory |
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| 83 | * |
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| 84 | * @return string The name to compare with files from other directories |
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| 85 | */ |
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| 86 | protected function getRelativeName(ResourceInterface $file, ResourceInterface $directory) |
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| 87 | { |
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| 88 | return substr((string) $file, strlen((string) $directory)); |
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| 89 | } |
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| 90 | |
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| 91 | /** |
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| 92 | * Performs the coalesce. |
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| 93 | * |
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| 94 | * @return array An array of file resources |
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| 95 | */ |
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| 96 | private function getFileResources() |
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| 97 | { |
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| 98 | $paths = array(); |
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| 99 | |
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| 100 | foreach ($this->directories as $directory) { |
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| 101 | foreach ($directory as $file) { |
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| 102 | $relative = $this->getRelativeName($file, $directory); |
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| 103 | |
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| 104 | if (!isset($paths[$relative])) { |
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| 105 | $paths[$relative] = $file; |
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| 106 | } |
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| 107 | } |
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| 108 | } |
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| 109 | |
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| 110 | return array_values($paths); |
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| 111 | } |
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| 112 | } |
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