/**
* Initialize the signature method's driver
*
* @access public
* @param string $method
* @param string $identifier
* @throw Oauth_Exception
* @return object instance of the method's driver
*/
public static function factory($method, $identifier)
{
static $instance;
if (!isset($instance[$method])) {
$class = __CLASS__ . '_' . str_replace('-', '_', $method);
if (class_exists($class)) {
$instance[$method] = new $class();
} else {
throw new Oauth2_Exception('invalid_algorithm');
}
}
self::$identifier = $identifier;
return $instance[$method];
}
/**
* Oauth_Signature::factory alias
*
* @access public
* @param string $method
* @param string $identifier
* @return object
* @see Oauth_Signature::factory
*/
public static function signature($method, $identifier)
{
return Oauth2_Signature::factory($method, $identifier);
}