/**
  * Return the current server host
  *
  * file.
  * @access public
  * @static
  */
 public static function host()
 {
     if (!Application::isCommandLine()) {
         $ret = 'http://' . $_SERVER['HTTP_HOST'];
         $dir = dirname($_SERVER['PHP_SELF']);
         if ($dir != '/') {
             $ret .= $dir . '/';
         }
     } else {
         $ret = constant('COMMAND_LINE_HOST');
     }
     return $ret;
 }