Best way to get which route was called (for Filter classes)

Hi there,

Can somebody suggest what is the best way to know which route was called from a controller or filter class?

Please don't say use uri_string() as this won't work for projects that uses baseURLs with a subpath.  I want to check (from my before() function in my custom filter) which route (or controller) was being called by the request.

Thanks in advance