[Sommaire] [Imprimer]

   1  <?php
   2  /**
   3   * Smarty plugin
   4   * @package Smarty
   5   * @subpackage plugins
   6   */
   7  
   8  /**
   9   * read a cache file, determine if it needs to be
  10   * regenerated or not
  11   *
  12   * @param string $tpl_file
  13   * @param string $cache_id
  14   * @param string $compile_id
  15   * @param string $results
  16   * @return boolean
  17   */
  18  
  19  //  $tpl_file, $cache_id, $compile_id, &$results
  20  
  21  function smarty_core_read_cache_file(&$params, &$smarty)
  22  {
  23      static  $content_cache = array();
  24  
  25      if ($smarty->force_compile) {
  26          // force compile enabled, always regenerate
  27          return false;
  28      }
  29  
  30      if (isset($content_cache[$params['tpl_file'].','.$params['cache_id'].','.$params['compile_id']])) {
  31          list($params['results'], $smarty->_cache_info) = $content_cache[$params['tpl_file'].','.$params['cache_id'].','.$params['compile_id']];
  32          return true;
  33      }
  34  
  35      if (!empty($smarty->cache_handler_func)) {
  36          // use cache_handler function
  37          call_user_func_array($smarty->cache_handler_func,
  38                               array('read', &$smarty, &$params['results'], $params['tpl_file'], $params['cache_id'], $params['compile_id'], null));
  39      } else {
  40          // use local cache file
  41          $_auto_id = $smarty->_get_auto_id($params['cache_id'], $params['compile_id']);
  42          $_cache_file = $smarty->_get_auto_filename($smarty->cache_dir, $params['tpl_file'], $_auto_id);
  43          $params['results'] = $smarty->_read_file($_cache_file);
  44      }
  45  
  46      if (empty($params['results'])) {
  47          // nothing to parse (error?), regenerate cache
  48          return false;
  49      }
  50  
  51      $_contents = $params['results'];
  52      $_info_start = strpos($_contents, "\n") + 1;
  53      $_info_len = (int)substr($_contents, 0, $_info_start - 1);
  54      $_cache_info = unserialize(substr($_contents, $_info_start, $_info_len));
  55      $params['results'] = substr($_contents, $_info_start + $_info_len);
  56  
  57      if ($smarty->caching == 2 && isset ($_cache_info['expires'])){
  58          // caching by expiration time
  59          if ($_cache_info['expires'] > -1 && (time() > $_cache_info['expires'])) {
  60              // cache expired, regenerate
  61              return false;
  62          }
  63      } else {
  64          // caching by lifetime
  65          if ($smarty->cache_lifetime > -1 && (time() - $_cache_info['timestamp'] > $smarty->cache_lifetime)) {
  66              // cache expired, regenerate
  67              return false;
  68          }
  69      }
  70  
  71      if ($smarty->compile_check) {
  72          $_params = array('get_source' => false, 'quiet'=>true);
  73          foreach (array_keys($_cache_info['template']) as $_template_dep) {
  74              $_params['resource_name'] = $_template_dep;
  75              if (!$smarty->_fetch_resource_info($_params) || $_cache_info['timestamp'] < $_params['resource_timestamp']) {
  76                  // template file has changed, regenerate cache
  77                  return false;
  78              }
  79          }
  80  
  81          if (isset($_cache_info['config'])) {
  82              $_params = array('resource_base_path' => $smarty->config_dir, 'get_source' => false, 'quiet'=>true);
  83              foreach (array_keys($_cache_info['config']) as $_config_dep) {
  84                  $_params['resource_name'] = $_config_dep;
  85                  if (!$smarty->_fetch_resource_info($_params) || $_cache_info['timestamp'] < $_params['resource_timestamp']) {
  86                      // config file has changed, regenerate cache
  87                      return false;
  88                  }
  89              }
  90          }
  91      }
  92  
  93      $content_cache[$params['tpl_file'].','.$params['cache_id'].','.$params['compile_id']] = array($params['results'], $_cache_info);
  94  
  95      $smarty->_cache_info = $_cache_info;
  96      return true;
  97  }
  98  
  99  /* vim: set expandtab: */
 100  
 101  ?>