How to parse "location"

[Urs Liska]

If I use (display location) in a Scheme function I get an output like:

#<location /home/uliska/git/bfsc/fried/das-trunkne-lied/parts/bassclarinet/02.ily:40:3>

How can I access the content of the location (or better: it's constituents), for example to extract the file name and a part of the path (concretely I'd like to extract "bassclarinet" and "02" from the above example)?

TIA
Urs