How to get a list of copybook file names for a given source file

[tezcan10]

Hi,
I have started using your parser recently and like it very much.
Would it be possible to obtain a list of copy book file names that a given source file has?
And how can I do that?
For example, the preprocessor adds each file name into a list and provides it to the post (AST) stage.

Looking forward to your reply
regards
Tezcan