library/core/core.write_cache_file.php

   1 <?php
   2 /**
   3  * Smarty plugin
   4  * @package Smarty
   5  * @subpackage plugins
   6  */
   7
   8 /**
   9  * Prepend the cache information to the cache file
  10  * and write it
  11  *
  12  * @param string $tpl_file
  13  * @param string $cache_id
  14  * @param string $compile_id
  15  * @param string $results
  16  * @return true|null
  17  */
  18
  19  // $tpl_file, $cache_id, $compile_id, $results
  20
  21 function smarty_core_write_cache_file($params, &$smarty)
  22 {
  23
  24     // put timestamp in cache header
  25     $smarty->_cache_info['timestamp'] = time();
  26     if ($smarty->cache_lifetime > -1){
  27         // expiration set
  28         $smarty->_cache_info['expires'] = $smarty->_cache_info['timestamp'] + $smarty->cache_lifetime;
  29     } else {
  30         // cache will never expire
  31         $smarty->_cache_info['expires'] = -1;
  32     }
  33
  34     // collapse {nocache...}-tags
  35     $params['results'] = preg_replace('!((\{nocache\:([0-9a-f]{32})#(\d+)\})'
  36                                       .'.*'
  37                                       .'{/nocache\:\\3#\\4\})!Us'
  38                                       ,'\\2'
  39                                       ,$params['results']);
  40     $smarty->_cache_info['cache_serials'] = $smarty->_cache_serials;
  41
  42     // prepend the cache header info into cache file
  43     $params['results'] = serialize($smarty->_cache_info)."\n".$params['results'];
  44
  45     if (!empty($smarty->cache_handler_func)) {
  46         // use cache_handler function
  47         call_user_func_array($smarty->cache_handler_func,
  48                              array('write', &$smarty, &$params['results'], $params['tpl_file'], $params['cache_id'], $params['compile_id'], null));
  49     } else {
  50         // use local cache file
  51
  52         if(!@is_writable($smarty->cache_dir)) {
  53             // cache_dir not writable, see if it exists
  54             if(!@is_dir($smarty->cache_dir)) {
  55                 $smarty->trigger_error('the $cache_dir \'' . $smarty->cache_dir . '\' does not exist, or is not a directory.', E_USER_ERROR);
  56                 return false;
  57             }
  58             $smarty->trigger_error('unable to write to $cache_dir \'' . realpath($smarty->cache_dir) . '\'. Be sure $cache_dir is writable by the web server user.', E_USER_ERROR);
  59             return false;
  60         }
  61
  62         $_auto_id = $smarty->_get_auto_id($params['cache_id'], $params['compile_id']);
  63         $_cache_file = $smarty->_get_auto_filename($smarty->cache_dir, $params['tpl_file'], $_auto_id);
  64         $_params = array('filename' => $_cache_file, 'contents' => $params['results'], 'create_dirs' => true);
  65         require_once(SMARTY_DIR . 'core' . DIRECTORY_SEPARATOR . 'core.write_file.php');
  66         smarty_core_write_file($_params, $smarty);
  67         return true;
  68     }
  69 }
  70
  71 /* vim: set expandtab: */
  72
  73 ?>