[Tutor] help with regexps/filename parsing

[Scott W]

Hey all.

I've got an issue that's been driving me a bit nuts.  I'm sure it _can_ 
be done with a regexp, although I'm missing a piece needed to tie it 
together to work for all cases.

I need to parse out a list of RPMs in this case, but it seems the RPM 
naming convention has changed, as there are files I'll need to parse 
that are NOT in the normal name-version-release.arch.rpm format.

I need to be able to grab the 'basename' for each file, as well as the 
version and arch, although these can be done seperately.  The problem 
can be shown by the following list of filenames:

XFree86-ISO8859-15-75dpi-fonts-4.3.0-78.EL.i386.rpm		(Note the EL 
embedded in name)
xfig-3.2.3d-12.i386.rpm		(standard naming)
rhel-ig-ppc-multi-zh_tw-3-4.noarch.rpm
perl-DateManip-5.42a-0.rhel3.noarch.rpm
openoffice.org-style-gnome-1.1.0-16.9.EL.i386.rpm

Those should represent the set of variations now possible.  I can handle 
most, but not all of the cases...any suggestions that would cover all of 
the above allowing the extraction of:
basename- in this case:
	XFree86-ISO8859-15-75dpi-fonts,
	xfig,
	rhel-ig-ppc-multi-zh_tw,
	perl-DateManip,
	openoffice.org-style-gnome

version:
	4.3.0-78.EL	(yes, including the .EL unfortunately, although I'd be OK 
without it and munging it on end if needed)
	3.2.3d-12
	3-4
	5.42a-0
	1.1.0-16.9.EL

arches:
	i386,
	i386,
	noarch,
	noarch,
	i386
respectively.

Any help greatly appreciated, as I've been beating myself up on this one 
for a bit.

Thanks,

Scott