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<?php |
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/** |
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* This file is part of the SVN-Buddy library. |
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* For the full copyright and license information, please view |
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* the LICENSE file that was distributed with this source code. |
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* |
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* @copyright Alexander Obuhovich <[email protected]> |
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* @link https://github.com/console-helpers/svn-buddy |
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*/ |
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namespace ConsoleHelpers\SVNBuddy\Cache; |
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/** |
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* Caches information about repository. |
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*/ |
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class FileCacheStorage implements ICacheStorage |
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{ |
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const COMPRESS_THRESHOLD = 10240; |
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/** |
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* Cache file. |
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* |
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* @var string |
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*/ |
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private $_file; |
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/** |
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* Creates instance of revision log cache. |
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* |
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* @param string $file Cache file. |
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*/ |
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public function __construct($file) |
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{ |
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$this->_file = $file; |
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$parent_path = dirname($this->_file); |
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if ( !file_exists($parent_path) ) { |
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mkdir($parent_path, 0777, true); |
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} |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function getUniqueId() |
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{ |
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return $this->_file; |
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} |
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/** |
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* @inheritDoc |
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* |
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* @throws \RuntimeException When cache file doesn't exist. |
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*/ |
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public function getSize() |
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{ |
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1 |
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if ( !file_exists($this->_file) ) { |
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throw new \RuntimeException('File "' . $this->_file . '" does not exist.'); |
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} |
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return filesize($this->_file); |
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} |
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/** |
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* Gets information from cache. |
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* |
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* @return array|null |
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*/ |
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public function get() |
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{ |
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if ( !file_exists($this->_file) ) { |
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return null; |
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} |
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$file_contents = file_get_contents($this->_file); |
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$first_symbol = substr($file_contents, 0, 1); |
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if ( !in_array($first_symbol, array('{', '[')) ) { |
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$file_contents = gzuncompress($file_contents); |
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} |
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$cache = json_decode($file_contents, true); |
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if ( $cache ) { |
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return $cache; |
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} |
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return null; |
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} |
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/** |
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* Stores information in cache. |
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* |
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* @param array $cache Cache. |
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* |
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* @return void |
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*/ |
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public function set(array $cache) |
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{ |
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$file_contents = json_encode($cache); |
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if ( strlen($file_contents) > self::COMPRESS_THRESHOLD ) { |
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$file_contents = gzcompress($file_contents); |
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} |
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file_put_contents($this->_file, $file_contents); |
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} |
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/** |
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* Invalidates cache. |
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* |
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* @return void |
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*/ |
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public function invalidate() |
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{ |
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if ( file_exists($this->_file) ) { |
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unlink($this->_file); |
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} |
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} |
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} |
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console-helpers /
svn-buddy
