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Diffstat (limited to '')
| -rw-r--r-- | library/vendor/Zend/Cache/Frontend/Function.php | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/library/vendor/Zend/Cache/Frontend/Function.php b/library/vendor/Zend/Cache/Frontend/Function.php new file mode 100644 index 0000000..3dc7fd8 --- /dev/null +++ b/library/vendor/Zend/Cache/Frontend/Function.php @@ -0,0 +1,178 @@ +<?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_Frontend + * @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 $Id$ + */ + + +/** + * @see Zend_Cache_Core + */ + + +/** + * @package Zend_Cache + * @subpackage Zend_Cache_Frontend + * @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_Frontend_Function extends Zend_Cache_Core +{ + /** + * This frontend specific options + * + * ====> (boolean) cache_by_default : + * - if true, function calls will be cached by default + * + * ====> (array) cached_functions : + * - an array of function names which will be cached (even if cache_by_default = false) + * + * ====> (array) non_cached_functions : + * - an array of function names which won't be cached (even if cache_by_default = true) + * + * @var array options + */ + protected $_specificOptions = array( + 'cache_by_default' => true, + 'cached_functions' => array(), + 'non_cached_functions' => array() + ); + + /** + * Constructor + * + * @param array $options Associative array of options + * @return void + */ + public function __construct(array $options = array()) + { + foreach ($options as $name => $value) { + $this->setOption($name, $value); + } + $this->setOption('automatic_serialization', true); + } + + /** + * Main method : call the specified function or get the result from cache + * + * @param callback $callback A valid callback + * @param array $parameters Function parameters + * @param array $tags Cache tags + * @param int $specificLifetime If != false, set a specific lifetime for this cache record (null => infinite lifetime) + * @param int $priority integer between 0 (very low priority) and 10 (maximum priority) used by some particular backends + * @return mixed Result + */ + public function call($callback, array $parameters = array(), $tags = array(), $specificLifetime = false, $priority = 8) + { + if (!is_callable($callback, true, $name)) { + Zend_Cache::throwException('Invalid callback'); + } + + $cacheBool1 = $this->_specificOptions['cache_by_default']; + $cacheBool2 = in_array($name, $this->_specificOptions['cached_functions']); + $cacheBool3 = in_array($name, $this->_specificOptions['non_cached_functions']); + $cache = (($cacheBool1 || $cacheBool2) && (!$cacheBool3)); + if (!$cache) { + // Caching of this callback is disabled + return call_user_func_array($callback, $parameters); + } + + $id = $this->_makeId($callback, $parameters); + if ( ($rs = $this->load($id)) && isset($rs[0], $rs[1])) { + // A cache is available + $output = $rs[0]; + $return = $rs[1]; + } else { + // A cache is not available (or not valid for this frontend) + ob_start(); + ob_implicit_flush(false); + $return = call_user_func_array($callback, $parameters); + $output = ob_get_clean(); + $data = array($output, $return); + $this->save($data, $id, $tags, $specificLifetime, $priority); + } + + echo $output; + return $return; + } + + /** + * ZF-9970 + * + * @deprecated + */ + private function _makeId($callback, array $args) + { + return $this->makeId($callback, $args); + } + + /** + * Make a cache id from the function name and parameters + * + * @param callback $callback A valid callback + * @param array $args Function parameters + * @throws Zend_Cache_Exception + * @return string Cache id + */ + public function makeId($callback, array $args = array()) + { + if (!is_callable($callback, true, $name)) { + Zend_Cache::throwException('Invalid callback'); + } + + // functions, methods and classnames are case-insensitive + $name = strtolower($name); + + // generate a unique id for object callbacks + if (is_object($callback)) { // Closures & __invoke + $object = $callback; + } elseif (isset($callback[0])) { // array($object, 'method') + $object = $callback[0]; + } + if (isset($object)) { + try { + $tmp = @serialize($callback); + } catch (Exception $e) { + Zend_Cache::throwException($e->getMessage()); + } + if (!$tmp) { + $lastErr = error_get_last(); + Zend_Cache::throwException("Can't serialize callback object to generate id: {$lastErr['message']}"); + } + $name.= '__' . $tmp; + } + + // generate a unique id for arguments + $argsStr = ''; + if ($args) { + try { + $argsStr = @serialize(array_values($args)); + } catch (Exception $e) { + Zend_Cache::throwException($e->getMessage()); + } + if (!$argsStr) { + $lastErr = error_get_last(); + throw Zend_Cache::throwException("Can't serialize arguments to generate id: {$lastErr['message']}"); + } + } + + return md5($name . $argsStr); + } + +} |