How to tell the difference between a nested folder structure and a Mac OS package?

Hi,

I'd like to be able to tell the difference between a nested folder  
structure and a Mac OS package from a Perl script?
If a directory item is a (nested) folder, I want to recursively scan  
its contents, if it is a package, I'd like to leave it alone.

Thanks for any pointers into the right direction!

Peter

___ Peter Hartmann ________

mailto:hphartmann@[EMAIL PROTECTED]