lib/smarty/internals/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.../nocache-tags
  35     if (preg_match_all('!\{(/?)nocache\:[0-9a-f]{32}#\d+\}!', $params['results'], $match, PREG_PATTERN_ORDER)) {
  36         // remove everything between every pair of outermost noache.../nocache-tags
  37         // and replace it by a single nocache-tag
  38         // this new nocache-tag will be replaced by dynamic contents in
  39         // smarty_core_process_compiled_includes() on a cache-read
  40
  41         $match_count = count($match[0]);
  42         $results = preg_split('!(\{/?nocache\:[0-9a-f]{32}#\d+\})!', $params['results'], -1, PREG_SPLIT_DELIM_CAPTURE);
  43
  44         $level = 0;
  45         $j = 0;
  46         for ($i=0, $results_count = count($results); $i < $results_count && $j < $match_count; $i++) {
  47             if ($results[$i] == $match[0][$j]) {
  48                 // nocache tag
  49                 if ($match[1][$j]) { // closing tag
  50                     $level--;
  51                     unset($results[$i]);
  52                 } else { // opening tag
  53                     if ($level++ > 0) unset($results[$i]);
  54                 }
  55                 $j++;
  56             } elseif ($level > 0) {
  57                 unset($results[$i]);
  58             }
  59         }
  60         $params['results'] = implode('', $results);
  61     }
  62     $smarty->_cache_info['cache_serials'] = $smarty->_cache_serials;
  63
  64     // prepend the cache header info into cache file
  65     $_cache_info = serialize($smarty->_cache_info);
  66     $params['results'] = strlen($_cache_info) . "\n" . $_cache_info . $params['results'];
  67
  68     if (!empty($smarty->cache_handler_func)) {
  69         // use cache_handler function
  70         call_user_func_array($smarty->cache_handler_func,
  71                              array('write', &$smarty, &$params['results'], $params['tpl_file'], $params['cache_id'], $params['compile_id'], $smarty->_cache_info['expires']));
  72     } else {
  73         // use local cache file
  74
  75         if(!@is_writable($smarty->cache_dir)) {
  76             // cache_dir not writable, see if it exists
  77             if(!@is_dir($smarty->cache_dir)) {
  78                 $smarty->trigger_error('the $cache_dir \'' . $smarty->cache_dir . '\' does not exist, or is not a directory.', E_USER_ERROR);
  79                 return false;
  80             }
  81             $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);
  82             return false;
  83         }
  84
  85         $_auto_id = $smarty->_get_auto_id($params['cache_id'], $params['compile_id']);
  86         $_cache_file = $smarty->_get_auto_filename($smarty->cache_dir, $params['tpl_file'], $_auto_id);
  87         $_params = array('filename' => $_cache_file, 'contents' => $params['results'], 'create_dirs' => true);
  88         require_once(SMARTY_CORE_DIR . 'core.write_file.php');
  89         smarty_core_write_file($_params, $smarty);
  90         return true;
  91     }
  92 }
  93
  94 /* vim: set expandtab: */
  95
  96 ?>