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   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  ?>