/**
* Set a driver
*
* Set a driver as active by providing its name as argument to this static method
*
* @param string $driver_name
* @return boolean
*
* @access public
* @static
*/
function driver($driver_name)
{
// class exists ?
//
if (class_exists($c = asido::__driver_classname($driver_name))) {
asido::_driver(new $c());
return true;
}
// file exists ?
//
if (!($fp = @fopen($f = asido::__driver_filename($driver_name), 'r', 1))) {
trigger_error(sprintf('Asido driver file "%s" (for driver "%s") ' . ' not found for including', $f, $driver_name), E_USER_ERROR);
return false;
}
fclose($fp);
// include it
//
require_once $f;
// file loaded, check again ...
//
if (class_exists($c)) {
asido::_driver(new $c());
return true;
}
trigger_error(sprintf('Asido driver class "%s" (for driver "%s") not found', $c, $driver_name), E_USER_ERROR);
return false;
}