gluon-web-remote

smarty_template_cached.php (13394B)

---

 <?php
 /**
  * Created by PhpStorm.
  * User: Uwe Tews
  * Date: 04.12.2014
  * Time: 06:08
  */
 
 /**
  * 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 Existence
      *
      * @var boolean
      */
     public $exists = false;
 
     /**
      * Cache Is Valid
      *
      * @var boolean
      */
     public $valid = null;
 
     /**
      * 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 = $_template->cache_id;
         if (!isset($_template->source)) {
             $_template->loadSource();
         }
         $this->source = $_template->source;
         if (!class_exists('Smarty_CacheResource', false)) {
             require SMARTY_SYSPLUGINS_DIR . 'smarty_cacheresource.php';
         }
         $this->handler = Smarty_CacheResource::load($_template->smarty);
     }
 
     /**
      * @param Smarty_Internal_Template $_template
      *
      * @return Smarty_Template_Cached
      */
     static function load(Smarty_Internal_Template $_template)
     {
         $_template->cached = $cached = new Smarty_Template_Cached($_template);
         $cached->handler->populate($cached, $_template);
         // caching enabled ?
         if (!($_template->caching == Smarty::CACHING_LIFETIME_CURRENT || $_template->caching == Smarty::CACHING_LIFETIME_SAVED) || $_template->source->recompiled) {
             $cached->valid = false;
         }
         return $cached;
     }
 
     /**
      * Check if cache is valid, lock cache if required
      *
      * @param \Smarty_Internal_Template $_template
      *
      * @return bool flag true if cache is valid
      */
     public function isCached(Smarty_Internal_Template $_template)
     {
         if ($this->valid !== null) {
             return $this->valid;
         }
         while (true) {
             while (true) {
                  if ($this->exists === false || $_template->smarty->force_compile || $_template->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->source->timestamp > $this->timestamp) {
                     $this->valid = false;
                 }
                 if ($this->valid || !$_template->smarty->cache_locking) {
                     break;
                 }
                 if (!$this->handler->locked($_template->smarty, $this)) {
                     $this->handler->acquireLock($_template->smarty, $this);
                     break 2;
                 }
                 $this->handler->populate($this, $_template);
             }
             if ($this->valid) {
                 if (!$_template->smarty->cache_locking || $this->handler->locked($_template->smarty, $this) === null) {
                     // load cache file for the following checks
                     if ($_template->smarty->debugging) {
                         Smarty_Internal_Debug::start_cache($_template);
                     }
                     if ($this->handler->process($_template, $this) === false) {
                         $this->valid = false;
                     } else {
                         $this->processed = true;
                     }
                     if ($_template->smarty->debugging) {
                         Smarty_Internal_Debug::end_cache($_template);
                     }
                 } else {
                     $this->is_locked = true;
                     continue;
                 }
             } else {
                 return $this->valid;
             }
             if ($this->valid && $_template->caching === Smarty::CACHING_LIFETIME_SAVED && $_template->properties['cache_lifetime'] >= 0 && (time() > ($_template->cached->timestamp + $_template->properties['cache_lifetime']))) {
                 $this->valid = false;
             }
             if ($_template->smarty->cache_locking) {
                 if (!$this->valid) {
                     $this->handler->acquireLock($_template->smarty, $this);
                 } elseif ($this->is_locked) {
                     $this->handler->releaseLock($_template->smarty, $this);
                 }
             }
             return $this->valid;
         }
         return $this->valid;
     }
 
     /**
      * Process cached template
      *
      * @param Smarty_Internal_Template $_template template object
      */
     public function process(Smarty_Internal_Template $_template)
     {
         if ($this->handler->process($_template, $this) === false) {
             $this->valid = false;
         }
         if ($this->valid) {
             $this->processed = true;
         } else {
             $this->processed = false;
         }
     }
 
     /**
      * Render cached template
      *
      * @param Smarty_Internal_Template $_template
      *
      * @return string
      * @throws Exception
      */
     public function render(Smarty_Internal_Template $_template)
     {
         if (!$this->processed) {
             $this->process($_template);
         }
         return $_template->getRenderedTemplateCode();
     }
 
     /**
      * 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->content = null;
                 $this->timestamp = time();
                 $this->exists = true;
                 $this->valid = true;
                 $this->processed = false;
                 if ($_template->smarty->cache_locking) {
                     $this->handler->releaseLock($_template->smarty, $this);
                 }
 
                 return true;
             }
             $this->content = null;
             $this->timestamp = false;
             $this->exists = false;
             $this->valid = false;
             $this->processed = false;
         }
 
         return false;
     }
 
     /**
      * Read cache content from handler
      *
      * @param Smarty_Internal_Template $_template template object
      *
      * @return string content
      */
     public function read(Smarty_Internal_Template $_template)
     {
         if (!$_template->source->recompiled) {
             return $this->handler->readCachedContent($_template);
         }
         return false;
     }
 
     /**
      * Sanitize content and write it to cache resource
      *
      * @param Smarty_Internal_Template $_template
      * @param string                   $content
      * @param bool                     $no_output_filter
      *
      * @throws SmartyException
      */
     public function updateCache(Smarty_Internal_Template $_template, $content, $no_output_filter)
     {
         $_template->properties['has_nocache_code'] = false;
         // get text between non-cached items
         $cache_split = preg_split("!/\*%%SmartyNocache:{$_template->properties['nocache_hash']}%%\*\/(.+?)/\*/%%SmartyNocache:{$_template->properties['nocache_hash']}%%\*/!s", $content);
         // get non-cached items
         preg_match_all("!/\*%%SmartyNocache:{$_template->properties['nocache_hash']}%%\*\/(.+?)/\*/%%SmartyNocache:{$_template->properties['nocache_hash']}%%\*/!s", $content, $cache_parts);
         $output = '';
         // loop over items, stitch back together
         foreach ($cache_split as $curr_idx => $curr_split) {
             // escape PHP tags in template content
             $output .= preg_replace('/(<%|%>|<\?php|<\?|\?>|<script\s+language\s*=\s*[\"\']?\s*php\s*[\"\']?\s*>)/', "<?php echo '\$1'; ?>\n", $curr_split);
             if (isset($cache_parts[0][$curr_idx])) {
                 $_template->properties['has_nocache_code'] = true;
                 $output .= $cache_parts[1][$curr_idx];
             }
         }
         if (!$no_output_filter && !$_template->has_nocache_code && (isset($_template->smarty->autoload_filters['output']) || isset($_template->smarty->registered_filters['output']))) {
             $output = Smarty_Internal_Filter_Handler::runFilter('output', $output, $_template);
         }
         // write cache file content
         $this->writeCachedContent($_template, $output);
     }
 
     /**
      * Writes the content to cache resource
      *
      * @param Smarty_Internal_Template $_template
      * @param string                   $content
      *
      * @return bool
      */
     public function writeCachedContent(Smarty_Internal_Template $_template, $content)
     {
         if ($_template->source->recompiled || !($_template->caching == Smarty::CACHING_LIFETIME_CURRENT || $_template->caching == Smarty::CACHING_LIFETIME_SAVED)) {
             // don't write cache file
             return false;
         }
         $_template->properties['cache_lifetime'] = $_template->cache_lifetime;
         $_template->properties['unifunc'] = 'content_' . str_replace(array('.', ','), '_', uniqid('', true));
         $content = Smarty_Internal_Extension_CodeFrame::create($_template, $content, true);
         if (!empty($_template->properties['tpl_function'])) {
             foreach ($_template->properties['tpl_function'] as $funcParam) {
                 if (is_file($funcParam['compiled_filepath'])) {
                     // read compiled file
                     $code = file_get_contents($funcParam['compiled_filepath']);
                     // grab template function
                     if (preg_match("/\/\* {$funcParam['call_name']} \*\/([\S\s]*?)\/\*\/ {$funcParam['call_name']} \*\//", $code, $match)) {
                         unset($code);
                         $content .= "<?php " . $match[0] . "?>\n";
                     }
                 }
             }
         }
         return $this->write($_template, $content);
     }
 
     /**
      * check client side cache
      *
      * @param Smarty_Internal_Template $_template
      * @param  string                  $content
      */
     public function cacheModifiedCheck(Smarty_Internal_Template $_template, $content)
     {
         $_isCached = $_template->isCached() && !$_template->has_nocache_code;
         $_last_modified_date = @substr($_SERVER['HTTP_IF_MODIFIED_SINCE'], 0, strpos($_SERVER['HTTP_IF_MODIFIED_SINCE'], 'GMT') + 3);
         if ($_isCached && $this->timestamp <= strtotime($_last_modified_date)) {
             switch (PHP_SAPI) {
                 case 'cgi': // php-cgi < 5.3
                 case 'cgi-fcgi': // php-cgi >= 5.3
                 case 'fpm-fcgi': // php-fpm >= 5.3.3
                     header('Status: 304 Not Modified');
                     break;
 
                 case 'cli':
                     if ( /* ^phpunit */
                     !empty($_SERVER['SMARTY_PHPUNIT_DISABLE_HEADERS']) /* phpunit$ */
                     ) {
                         $_SERVER['SMARTY_PHPUNIT_HEADERS'][] = '304 Not Modified';
                     }
                     break;
 
                 default:
                     header($_SERVER['SERVER_PROTOCOL'] . ' 304 Not Modified');
                     break;
             }
         } else {
             switch (PHP_SAPI) {
                 case 'cli':
                     if ( /* ^phpunit */
                     !empty($_SERVER['SMARTY_PHPUNIT_DISABLE_HEADERS']) /* phpunit$ */
                     ) {
                         $_SERVER['SMARTY_PHPUNIT_HEADERS'][] = 'Last-Modified: ' . gmdate('D, d M Y H:i:s', $this->timestamp) . ' GMT';
                     }
                     break;
 
                 default:
                     header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $this->timestamp) . ' GMT');
                     break;
             }
             echo $content;
         }
     }
 }