[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\Loader; |
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| 13 | |
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| 14 | use Assetic\Cache\ConfigCache; |
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| 15 | use Assetic\Factory\Resource\IteratorResourceInterface; |
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| 16 | use Assetic\Factory\Resource\ResourceInterface; |
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| 17 | |
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| 18 | /** |
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| 19 | * Adds a caching layer to a loader. |
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| 20 | * |
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| 21 | * A cached formula loader is a composition of a formula loader and a cache. |
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| 22 | * |
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| 23 | * @author Kris Wallsmith <kris.wallsmith@gmail.com> |
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| 24 | */ |
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| 25 | class CachedFormulaLoader implements FormulaLoaderInterface |
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| 26 | { |
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| 27 | private $loader; |
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| 28 | private $configCache; |
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| 29 | private $debug; |
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| 30 | |
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| 31 | /** |
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| 32 | * Constructor. |
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| 33 | * |
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| 34 | * When the loader is in debug mode it will ensure the cached formulae |
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| 35 | * are fresh before returning them. |
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| 36 | * |
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| 37 | * @param FormulaLoaderInterface $loader A formula loader |
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| 38 | * @param ConfigCache $configCache A config cache |
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| 39 | * @param Boolean $debug The debug mode |
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| 40 | */ |
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| 41 | public function __construct(FormulaLoaderInterface $loader, ConfigCache $configCache, $debug = false) |
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| 42 | { |
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| 43 | $this->loader = $loader; |
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| 44 | $this->configCache = $configCache; |
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| 45 | $this->debug = $debug; |
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| 46 | } |
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| 47 | |
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| 48 | public function load(ResourceInterface $resources) |
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| 49 | { |
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| 50 | if (!$resources instanceof IteratorResourceInterface) { |
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| 51 | $resources = array($resources); |
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| 52 | } |
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| 53 | |
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| 54 | $formulae = array(); |
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| 55 | |
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| 56 | foreach ($resources as $resource) { |
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| 57 | $id = (string) $resource; |
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| 58 | if (!$this->configCache->has($id) || ($this->debug && !$resource->isFresh($this->configCache->getTimestamp($id)))) { |
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| 59 | $formulae += $this->loader->load($resource); |
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| 60 | $this->configCache->set($id, $formulae); |
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| 61 | } else { |
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| 62 | $formulae += $this->configCache->get($id); |
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| 63 | } |
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| 64 | } |
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| 65 | |
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| 66 | return $formulae; |
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| 67 | } |
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| 68 | } |
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