/**
* instance method
*
* Get singleton instance of `Ai1ec_Loader`.
*
* @return Ai1ec_Loader Cached self instance
*/
public static function instance()
{
if (!self::$_instance instanceof Ai1ec_Loader) {
self::$_instance = new Ai1ec_Loader();
}
return self::$_instance;
}
/**
* Get a list of OAuth providers
*
* @return array Map of provider names and corresponding classes
*
* @staticvar $names Map of provider names and corresponding classes
*/
protected function _get_providers()
{
static $names = NULL;
if (NULL === $names) {
$classes = Ai1ec_Loader::instance()->get_matches('/^Ai1ec_Oauth_Provider_[A-Z][a-z]+$/');
$names = array();
foreach ($classes as $class) {
$names[$this->_normalize_name($class)] = $class;
}
}
return $names;
}