--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/Zend/Cache/Frontend/Function.php Fri Mar 11 15:05:35 2011 +0100
@@ -0,0 +1,180 @@
+<?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) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license http://framework.zend.com/license/new-bsd New BSD License
+ * @version $Id: Function.php 22648 2010-07-20 14:43:27Z mabe $
+ */
+
+
+/**
+ * @see Zend_Cache_Core
+ */
+require_once 'Zend/Cache/Core.php';
+
+
+/**
+ * @package Zend_Cache
+ * @subpackage Zend_Cache_Frontend
+ * @copyright Copyright (c) 2005-2010 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 $options = array())
+ {
+ while (list($name, $value) = each($options)) {
+ $this->setOption($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_contents();
+ ob_end_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);
+ }
+
+}