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257 lines
7.6 KiB
257 lines
7.6 KiB
<?php |
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/** |
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* Created by PhpStorm. |
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* User: Uwe Tews |
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* Date: 04.12.2014 |
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* Time: 06:08 |
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*/ |
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/** |
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* Smarty Resource Data Object |
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* Cache Data Container for Template Files |
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* |
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* @package Smarty |
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* @subpackage TemplateResources |
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* @author Rodney Rehm |
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*/ |
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class Smarty_Template_Cached extends Smarty_Template_Resource_Base |
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{ |
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/** |
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* Cache Is Valid |
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* |
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* @var boolean |
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*/ |
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public $valid = null; |
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/** |
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* CacheResource Handler |
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* |
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* @var Smarty_CacheResource |
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*/ |
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public $handler = null; |
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/** |
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* Template Cache Id (Smarty_Internal_Template::$cache_id) |
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* |
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* @var string |
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*/ |
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public $cache_id = null; |
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/** |
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* saved cache lifetime in seconds |
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* |
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* @var integer |
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*/ |
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public $cache_lifetime = 0; |
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/** |
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* Id for cache locking |
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* |
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* @var string |
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*/ |
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public $lock_id = null; |
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/** |
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* flag that cache is locked by this instance |
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* |
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* @var bool |
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*/ |
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public $is_locked = false; |
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/** |
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* Source Object |
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* |
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* @var Smarty_Template_Source |
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*/ |
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public $source = null; |
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/** |
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* Nocache hash codes of processed compiled templates |
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* |
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* @var array |
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*/ |
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public $hashes = array(); |
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/** |
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* Flag if this is a cache resource |
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* |
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* @var bool |
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*/ |
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public $isCache = true; |
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/** |
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* create Cached Object container |
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* |
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* @param Smarty_Internal_Template $_template template object |
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* |
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* @throws \SmartyException |
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*/ |
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public function __construct(Smarty_Internal_Template $_template) |
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{ |
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$this->compile_id = $_template->compile_id; |
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$this->cache_id = $_template->cache_id; |
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$this->source = $_template->source; |
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if (!class_exists('Smarty_CacheResource', false)) { |
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include SMARTY_SYSPLUGINS_DIR . 'smarty_cacheresource.php'; |
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} |
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$this->handler = Smarty_CacheResource::load($_template->smarty); |
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} |
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/** |
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* @param Smarty_Internal_Template $_template |
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* |
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* @return Smarty_Template_Cached |
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*/ |
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public static function load(Smarty_Internal_Template $_template) |
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{ |
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$_template->cached = new Smarty_Template_Cached($_template); |
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$_template->cached->handler->populate($_template->cached, $_template); |
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// caching enabled ? |
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if (!$_template->caching || $_template->source->handler->recompiled |
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) { |
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$_template->cached->valid = false; |
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} |
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return $_template->cached; |
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} |
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/** |
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* Render cache template |
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* |
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* @param \Smarty_Internal_Template $_template |
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* @param bool $no_output_filter |
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* |
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* @throws \Exception |
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*/ |
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public function render(Smarty_Internal_Template $_template, $no_output_filter = true) |
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{ |
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if ($this->isCached($_template)) { |
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if ($_template->smarty->debugging) { |
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if (!isset($_template->smarty->_debug)) { |
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$_template->smarty->_debug = new Smarty_Internal_Debug(); |
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} |
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$_template->smarty->_debug->start_cache($_template); |
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} |
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if (!$this->processed) { |
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$this->process($_template); |
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} |
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$this->getRenderedTemplateCode($_template); |
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if ($_template->smarty->debugging) { |
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$_template->smarty->_debug->end_cache($_template); |
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} |
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return; |
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} else { |
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$_template->smarty->ext->_updateCache->updateCache($this, $_template, $no_output_filter); |
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} |
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} |
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/** |
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* Check if cache is valid, lock cache if required |
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* |
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* @param \Smarty_Internal_Template $_template |
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* |
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* @return bool flag true if cache is valid |
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*/ |
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public function isCached(Smarty_Internal_Template $_template) |
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{ |
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if ($this->valid !== null) { |
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return $this->valid; |
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} |
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while (true) { |
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while (true) { |
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if ($this->exists === false || $_template->smarty->force_compile || $_template->smarty->force_cache) { |
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$this->valid = false; |
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} else { |
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$this->valid = true; |
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} |
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if ($this->valid && $_template->caching === Smarty::CACHING_LIFETIME_CURRENT |
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&& $_template->cache_lifetime >= 0 && time() > ($this->timestamp + $_template->cache_lifetime) |
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) { |
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// lifetime expired |
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$this->valid = false; |
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} |
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if ($this->valid && $_template->compile_check === Smarty::COMPILECHECK_ON |
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&& $_template->source->getTimeStamp() > $this->timestamp |
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) { |
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$this->valid = false; |
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} |
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if ($this->valid || !$_template->smarty->cache_locking) { |
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break; |
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} |
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if (!$this->handler->locked($_template->smarty, $this)) { |
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$this->handler->acquireLock($_template->smarty, $this); |
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break 2; |
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} |
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$this->handler->populate($this, $_template); |
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} |
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if ($this->valid) { |
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if (!$_template->smarty->cache_locking || $this->handler->locked($_template->smarty, $this) === null) { |
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// load cache file for the following checks |
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if ($_template->smarty->debugging) { |
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$_template->smarty->_debug->start_cache($_template); |
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} |
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if ($this->handler->process($_template, $this) === false) { |
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$this->valid = false; |
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} else { |
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$this->processed = true; |
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} |
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if ($_template->smarty->debugging) { |
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$_template->smarty->_debug->end_cache($_template); |
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} |
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} else { |
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$this->is_locked = true; |
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continue; |
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} |
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} else { |
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return $this->valid; |
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} |
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if ($this->valid && $_template->caching === Smarty::CACHING_LIFETIME_SAVED |
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&& $_template->cached->cache_lifetime >= 0 |
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&& (time() > ($_template->cached->timestamp + $_template->cached->cache_lifetime)) |
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) { |
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$this->valid = false; |
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} |
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if ($_template->smarty->cache_locking) { |
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if (!$this->valid) { |
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$this->handler->acquireLock($_template->smarty, $this); |
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} elseif ($this->is_locked) { |
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$this->handler->releaseLock($_template->smarty, $this); |
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} |
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} |
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return $this->valid; |
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} |
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return $this->valid; |
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} |
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/** |
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* Process cached template |
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* |
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* @param Smarty_Internal_Template $_template template object |
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* @param bool $update flag if called because cache update |
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*/ |
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public function process(Smarty_Internal_Template $_template, $update = false) |
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{ |
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if ($this->handler->process($_template, $this, $update) === false) { |
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$this->valid = false; |
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} |
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if ($this->valid) { |
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$this->processed = true; |
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} else { |
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$this->processed = false; |
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} |
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} |
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/** |
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* Read cache content from handler |
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* |
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* @param Smarty_Internal_Template $_template template object |
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* |
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* @return string|false content |
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*/ |
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public function read(Smarty_Internal_Template $_template) |
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{ |
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if (!$_template->source->handler->recompiled) { |
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return $this->handler->readCachedContent($_template); |
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} |
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return false; |
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} |
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}
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