diff options
Diffstat (limited to 'lib/smarty/libs/sysplugins/smarty_cacheresource.php')
| -rw-r--r-- | lib/smarty/libs/sysplugins/smarty_cacheresource.php | 381 |
1 files changed, 0 insertions, 381 deletions
diff --git a/lib/smarty/libs/sysplugins/smarty_cacheresource.php b/lib/smarty/libs/sysplugins/smarty_cacheresource.php deleted file mode 100644 index ca18add5e..000000000 --- a/lib/smarty/libs/sysplugins/smarty_cacheresource.php +++ /dev/null @@ -1,381 +0,0 @@ -<?php -/** -* Smarty Internal Plugin -* -* @package Smarty -* @subpackage Cacher -*/ - -/** -* Cache Handler API -* -* @package Smarty -* @subpackage Cacher -* @author Rodney Rehm -*/ -abstract class Smarty_CacheResource { - /** - * cache for Smarty_CacheResource instances - * @var array - */ - public static $resources = array(); - - /** - * resource types provided by the core - * @var array - */ - protected static $sysplugins = array( - 'file' => true, - ); - - /** - * populate Cached Object with meta data from Resource - * - * @param Smarty_Template_Cached $cached cached object - * @param Smarty_Internal_Template $_template template object - * @return void - */ - public abstract function populate(Smarty_Template_Cached $cached, Smarty_Internal_Template $_template); - - /** - * populate Cached Object with timestamp and exists from Resource - * - * @param Smarty_Template_Cached $source cached object - * @return void - */ - public abstract function populateTimestamp(Smarty_Template_Cached $cached); - - /** - * Read the cached template and process header - * - * @param Smarty_Internal_Template $_template template object - * @param Smarty_Template_Cached $cached cached object - * @return booelan true or false if the cached content does not exist - */ - public abstract function process(Smarty_Internal_Template $_template, Smarty_Template_Cached $cached=null); - - /** - * Write the rendered template output to cache - * - * @param Smarty_Internal_Template $_template template object - * @param string $content content to cache - * @return boolean success - */ - public abstract function writeCachedContent(Smarty_Internal_Template $_template, $content); - - /** - * Return cached content - * - * @param Smarty_Internal_Template $_template template object - * @param string $content content of cache - */ - public function getCachedContent(Smarty_Internal_Template $_template) - { - if ($_template->cached->handler->process($_template)) { - ob_start(); - $_template->properties['unifunc']($_template); - return ob_get_clean(); - } - return null; - } - - /** - * Empty cache - * - * @param Smarty $smarty Smarty object - * @param integer $exp_time expiration time (number of seconds, not timestamp) - * @return integer number of cache files deleted - */ - public abstract function clearAll(Smarty $smarty, $exp_time=null); - - /** - * Empty cache for a specific template - * - * @param Smarty $smarty Smarty object - * @param string $resource_name template name - * @param string $cache_id cache id - * @param string $compile_id compile id - * @param integer $exp_time expiration time (number of seconds, not timestamp) - * @return integer number of cache files deleted - */ - public abstract function clear(Smarty $smarty, $resource_name, $cache_id, $compile_id, $exp_time); - - - public function locked(Smarty $smarty, Smarty_Template_Cached $cached) - { - // theoretically locking_timeout should be checked against time_limit (max_execution_time) - $start = microtime(true); - $hadLock = null; - while ($this->hasLock($smarty, $cached)) { - $hadLock = true; - if (microtime(true) - $start > $smarty->locking_timeout) { - // abort waiting for lock release - return false; - } - sleep(1); - } - return $hadLock; - } - - public function hasLock(Smarty $smarty, Smarty_Template_Cached $cached) - { - // check if lock exists - return false; - } - - public function acquireLock(Smarty $smarty, Smarty_Template_Cached $cached) - { - // create lock - return true; - } - - public function releaseLock(Smarty $smarty, Smarty_Template_Cached $cached) - { - // release lock - return true; - } - - - /** - * Load Cache Resource Handler - * - * @param Smarty $smarty Smarty object - * @param string $type name of the cache resource - * @return Smarty_CacheResource Cache Resource Handler - */ - public static function load(Smarty $smarty, $type = null) - { - if (!isset($type)) { - $type = $smarty->caching_type; - } - - // try smarty's cache - if (isset($smarty->_cacheresource_handlers[$type])) { - return $smarty->_cacheresource_handlers[$type]; - } - - // try registered resource - if (isset($smarty->registered_cache_resources[$type])) { - // do not cache these instances as they may vary from instance to instance - return $smarty->_cacheresource_handlers[$type] = $smarty->registered_cache_resources[$type]; - } - // try sysplugins dir - if (isset(self::$sysplugins[$type])) { - if (!isset(self::$resources[$type])) { - $cache_resource_class = 'Smarty_Internal_CacheResource_' . ucfirst($type); - self::$resources[$type] = new $cache_resource_class(); - } - return $smarty->_cacheresource_handlers[$type] = self::$resources[$type]; - } - // try plugins dir - $cache_resource_class = 'Smarty_CacheResource_' . ucfirst($type); - if ($smarty->loadPlugin($cache_resource_class)) { - if (!isset(self::$resources[$type])) { - self::$resources[$type] = new $cache_resource_class(); - } - return $smarty->_cacheresource_handlers[$type] = self::$resources[$type]; - } - // give up - throw new SmartyException("Unable to load cache resource '{$type}'"); - } - - /** - * Invalid Loaded Cache Files - * - * @param Smarty $smarty Smarty object - */ - public static function invalidLoadedCache(Smarty $smarty) - { - foreach ($smarty->template_objects as $tpl) { - if (isset($tpl->cached)) { - $tpl->cached->valid = false; - $tpl->cached->processed = false; - } - } - } -} - -/** -* Smarty Resource Data Object -* -* Cache Data Container for Template Files -* -* @package Smarty -* @subpackage TemplateResources -* @author Rodney Rehm -*/ -class Smarty_Template_Cached { - /** - * Source Filepath - * @var string - */ - public $filepath = false; - - /** - * Source Content - * @var string - */ - public $content = null; - - /** - * Source Timestamp - * @var integer - */ - public $timestamp = false; - - /** - * Source Existance - * @var boolean - */ - public $exists = false; - - /** - * Cache Is Valid - * @var boolean - */ - public $valid = false; - - /** - * Cache was processed - * @var boolean - */ - public $processed = false; - - /** - * CacheResource Handler - * @var Smarty_CacheResource - */ - public $handler = null; - - /** - * Template Compile Id (Smarty_Internal_Template::$compile_id) - * @var string - */ - public $compile_id = null; - - /** - * Template Cache Id (Smarty_Internal_Template::$cache_id) - * @var string - */ - public $cache_id = null; - - /** - * Id for cache locking - * @var string - */ - public $lock_id = null; - - /** - * flag that cache is locked by this instance - * @var bool - */ - public $is_locked = false; - - /** - * Source Object - * @var Smarty_Template_Source - */ - public $source = null; - - /** - * create Cached Object container - * - * @param Smarty_Internal_Template $_template template object - */ - public function __construct(Smarty_Internal_Template $_template) - { - $this->compile_id = $_template->compile_id; - $this->cache_id = $_template->cache_id; - $this->source = $_template->source; - $_template->cached = $this; - $smarty = $_template->smarty; - - // - // load resource handler - // - $this->handler = $handler = Smarty_CacheResource::load($smarty); // Note: prone to circular references - - // - // check if cache is valid - // - if (!($_template->caching == Smarty::CACHING_LIFETIME_CURRENT || $_template->caching == Smarty::CACHING_LIFETIME_SAVED) || $_template->source->recompiled) { - $handler->populate($this, $_template); - return; - } - while (true) { - while (true) { - $handler->populate($this, $_template); - if ($this->timestamp === false || $smarty->force_compile || $smarty->force_cache) { - $this->valid = false; - } else { - $this->valid = true; - } - if ($this->valid && $_template->caching == Smarty::CACHING_LIFETIME_CURRENT && $_template->cache_lifetime >= 0 && time() > ($this->timestamp + $_template->cache_lifetime)) { - // lifetime expired - $this->valid = false; - } - if ($this->valid || !$_template->smarty->cache_locking) { - break; - } - if (!$this->handler->locked($_template->smarty, $this)) { - $this->handler->acquireLock($_template->smarty, $this); - break 2; - } - } - if ($this->valid) { - if (!$_template->smarty->cache_locking || $this->handler->locked($_template->smarty, $this) === null) { - // load cache file for the following checks - if ($smarty->debugging) { - Smarty_Internal_Debug::start_cache($_template); - } - if($handler->process($_template, $this) === false) { - $this->valid = false; - } else { - $this->processed = true; - } - if ($smarty->debugging) { - Smarty_Internal_Debug::end_cache($_template); - } - } else { - continue; - } - } else { - return; - } - if ($this->valid && $_template->caching === Smarty::CACHING_LIFETIME_SAVED && $_template->properties['cache_lifetime'] >= 0 && (time() > ($_template->cached->timestamp + $_template->properties['cache_lifetime']))) { - $this->valid = false; - } - if (!$this->valid && $_template->smarty->cache_locking) { - $this->handler->acquireLock($_template->smarty, $this); - return; - } else { - return; - } - } - } - - /** - * Write this cache object to handler - * - * @param Smarty_Internal_Template $_template template object - * @param string $content content to cache - * @return boolean success - */ - public function write(Smarty_Internal_Template $_template, $content) - { - if (!$_template->source->recompiled) { - if ($this->handler->writeCachedContent($_template, $content)) { - $this->timestamp = time(); - $this->exists = true; - $this->valid = true; - if ($_template->smarty->cache_locking) { - $this->handler->releaseLock($_template->smarty, $this); - } - return true; - } - } - return false; - } - -} -?>
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