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<?php |
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namespace AssetManager\Core\Cache; |
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use Assetic\Cache\CacheInterface; |
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use AssetManager\Core\Exception\RuntimeException; |
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use Zend\Stdlib\ErrorHandler; |
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/** |
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* A file path cache. Same as FilesystemCache, except for the fact that this will create the |
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* directories recursively, in stead of using a hash. |
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*/ |
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class FilePathCache implements CacheInterface |
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{ |
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/** |
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* @var string Holds the cache directory. |
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*/ |
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protected $dir; |
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/** |
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* @var string The filename we'll be caching for. |
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*/ |
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protected $filename; |
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/** |
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* @var string Holds the cachedFile string |
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*/ |
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protected $cachedFile; |
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/** |
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* Constructor |
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* |
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* @param string $dir The directory to cache in |
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* @param string $filename The filename we'll be caching for. |
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*/ |
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public function __construct($dir, $filename) |
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{ |
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$this->dir = $dir; |
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$this->filename = $filename; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function has($key) |
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{ |
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return file_exists($this->cachedFile()); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function get($key) |
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{ |
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$path = $this->cachedFile(); |
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if (!file_exists($path)) { |
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throw new RuntimeException('There is no cached value for ' . $this->filename); |
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} |
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return file_get_contents($path); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function set($key, $value) |
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{ |
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$pathInfo = pathInfo($this->cachedFile()); |
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$cacheDir = $pathInfo['dirname']; |
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$fileName = $pathInfo['basename']; |
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ErrorHandler::start(); |
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if (!is_dir($cacheDir)) { |
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mkdir($cacheDir, 0777, true); |
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} |
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ErrorHandler::stop(); |
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if (!is_writable($cacheDir)) { |
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throw new RuntimeException('Unable to write file ' . $this->cachedFile()); |
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} |
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// Use "rename" to achieve atomic writes |
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$tmpFilePath = $cacheDir . '/AssetManagerFilePathCache_' . $fileName; |
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if (@file_put_contents($tmpFilePath, $value, LOCK_EX) === false) { |
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throw new RuntimeException('Unable to write file ' . $this->cachedFile()); |
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} |
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rename($tmpFilePath, $this->cachedFile()); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function remove($key) |
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{ |
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ErrorHandler::start(\E_WARNING); |
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$success = unlink($this->cachedFile()); |
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ErrorHandler::stop(); |
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if (false === $success) { |
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throw new RuntimeException(sprintf('Could not remove key "%s"', $this->cachedFile())); |
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} |
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return $success; |
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} |
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/** |
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* Get the path-to-file. |
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* @return string Cache path |
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*/ |
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protected function cachedFile() |
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{ |
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if (null === $this->cachedFile) { |
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$this->cachedFile = rtrim($this->dir, '/') . '/' . ltrim($this->filename, '/'); |
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} |
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return $this->cachedFile; |
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} |
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} |
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wshafer /
assetmanager-core
