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Diffstat (limited to 'library/vendor/Zend/Cache/Backend.php')
| -rw-r--r-- | library/vendor/Zend/Cache/Backend.php | 285 |
1 files changed, 285 insertions, 0 deletions
diff --git a/library/vendor/Zend/Cache/Backend.php b/library/vendor/Zend/Cache/Backend.php new file mode 100644 index 0000000..6e1efde --- /dev/null +++ b/library/vendor/Zend/Cache/Backend.php @@ -0,0 +1,285 @@ +<?php +/** + * Zend Framework + * + * LICENSE + * + * This source file is subject to the new BSD license that is bundled + * with this package in the file LICENSE.txt. + * It is also available through the world-wide-web at this URL: + * http://framework.zend.com/license/new-bsd + * If you did not receive a copy of the license and are unable to + * obtain it through the world-wide-web, please send an email + * to license@zend.com so we can send you a copy immediately. + * + * @category Zend + * @package Zend_Cache + * @subpackage Zend_Cache_Backend + * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com) + * @license http://framework.zend.com/license/new-bsd New BSD License + * @version $Id$ + */ + + +/** + * @package Zend_Cache + * @subpackage Zend_Cache_Backend + * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com) + * @license http://framework.zend.com/license/new-bsd New BSD License + */ +class Zend_Cache_Backend +{ + /** + * Frontend or Core directives + * + * =====> (int) lifetime : + * - Cache lifetime (in seconds) + * - If null, the cache is valid forever + * + * =====> (int) logging : + * - if set to true, a logging is activated throw Zend_Log + * + * @var array directives + */ + protected $_directives = array( + 'lifetime' => 3600, + 'logging' => false, + 'logger' => null + ); + + /** + * Available options + * + * @var array available options + */ + protected $_options = array(); + + /** + * Constructor + * + * @param array $options Associative array of options + */ + public function __construct(array $options = array()) + { + foreach ($options as $name => $value) { + $this->setOption($name, $value); + } + } + + /** + * Set the frontend directives + * + * @param array $directives Assoc of directives + * @throws Zend_Cache_Exception + * @return void + */ + public function setDirectives($directives) + { + if (!is_array($directives)) Zend_Cache::throwException('Directives parameter must be an array'); + while (list($name, $value) = each($directives)) { + if (!is_string($name)) { + Zend_Cache::throwException("Incorrect option name : $name"); + } + $name = strtolower($name); + if (array_key_exists($name, $this->_directives)) { + $this->_directives[$name] = $value; + } + + } + + $this->_loggerSanity(); + } + + /** + * Set an option + * + * @param string $name + * @param mixed $value + * @throws Zend_Cache_Exception + * @return void + */ + public function setOption($name, $value) + { + if (!is_string($name)) { + Zend_Cache::throwException("Incorrect option name : $name"); + } + $name = strtolower($name); + if (array_key_exists($name, $this->_options)) { + $this->_options[$name] = $value; + } + } + + /** + * Returns an option + * + * @param string $name Optional, the options name to return + * @throws Zend_Cache_Exceptions + * @return mixed + */ + public function getOption($name) + { + $name = strtolower($name); + + if (array_key_exists($name, $this->_options)) { + return $this->_options[$name]; + } + + if (array_key_exists($name, $this->_directives)) { + return $this->_directives[$name]; + } + + Zend_Cache::throwException("Incorrect option name : {$name}"); + } + + /** + * Get the life time + * + * if $specificLifetime is not false, the given specific life time is used + * else, the global lifetime is used + * + * @param int $specificLifetime + * @return int Cache life time + */ + public function getLifetime($specificLifetime) + { + if ($specificLifetime === false) { + return $this->_directives['lifetime']; + } + return $specificLifetime; + } + + /** + * Return true if the automatic cleaning is available for the backend + * + * DEPRECATED : use getCapabilities() instead + * + * @deprecated + * @return boolean + */ + public function isAutomaticCleaningAvailable() + { + return true; + } + + /** + * Determine system TMP directory and detect if we have read access + * + * inspired from Zend_File_Transfer_Adapter_Abstract + * + * @return string + * @throws Zend_Cache_Exception if unable to determine directory + */ + public function getTmpDir() + { + $tmpdir = array(); + foreach (array($_ENV, $_SERVER) as $tab) { + foreach (array('TMPDIR', 'TEMP', 'TMP', 'windir', 'SystemRoot') as $key) { + if (isset($tab[$key]) && is_string($tab[$key])) { + if (($key == 'windir') or ($key == 'SystemRoot')) { + $dir = realpath($tab[$key] . '\\temp'); + } else { + $dir = realpath($tab[$key]); + } + if ($this->_isGoodTmpDir($dir)) { + return $dir; + } + } + } + } + $upload = ini_get('upload_tmp_dir'); + if ($upload) { + $dir = realpath($upload); + if ($this->_isGoodTmpDir($dir)) { + return $dir; + } + } + if (function_exists('sys_get_temp_dir')) { + $dir = sys_get_temp_dir(); + if ($this->_isGoodTmpDir($dir)) { + return $dir; + } + } + // Attemp to detect by creating a temporary file + $tempFile = tempnam(md5(uniqid(rand(), TRUE)), ''); + if ($tempFile) { + $dir = realpath(dirname($tempFile)); + unlink($tempFile); + if ($this->_isGoodTmpDir($dir)) { + return $dir; + } + } + if ($this->_isGoodTmpDir('/tmp')) { + return '/tmp'; + } + if ($this->_isGoodTmpDir('\\temp')) { + return '\\temp'; + } + Zend_Cache::throwException('Could not determine temp directory, please specify a cache_dir manually'); + } + + /** + * Verify if the given temporary directory is readable and writable + * + * @param string $dir temporary directory + * @return boolean true if the directory is ok + */ + protected function _isGoodTmpDir($dir) + { + if (is_readable($dir)) { + if (is_writable($dir)) { + return true; + } + } + return false; + } + + /** + * Make sure if we enable logging that the Zend_Log class + * is available. + * Create a default log object if none is set. + * + * @throws Zend_Cache_Exception + * @return void + */ + protected function _loggerSanity() + { + if (!isset($this->_directives['logging']) || !$this->_directives['logging']) { + return; + } + + if (isset($this->_directives['logger'])) { + if ($this->_directives['logger'] instanceof Zend_Log) { + return; + } + Zend_Cache::throwException('Logger object is not an instance of Zend_Log class.'); + } + + // Create a default logger to the standard output stream + $logger = new Zend_Log(new Zend_Log_Writer_Stream('php://output')); + $logger->addFilter(new Zend_Log_Filter_Priority(Zend_Log::WARN, '<=')); + $this->_directives['logger'] = $logger; + } + + /** + * Log a message at the WARN (4) priority. + * + * @param string $message + * @param int $priority + * @return void + */ + protected function _log($message, $priority = 4) + { + if (!$this->_directives['logging']) { + return; + } + + if (!isset($this->_directives['logger'])) { + Zend_Cache::throwException('Logging is enabled but logger is not set.'); + } + $logger = $this->_directives['logger']; + if (!$logger instanceof Zend_Log) { + Zend_Cache::throwException('Logger object is not an instance of Zend_Log class.'); + } + $logger->log($message, $priority); + } +} |