This works:
names = [ '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', ]
import re
pattern = r'''
(?P<base>.+)
-(?P<version>[\w.]+)
-(?P<release>[\w.]+)
\.(?P<arch>\w+)
\.rpm
'''patternRe = re.compile(pattern, re.VERBOSE)
for name in names:
m = patternRe.search(name)
if m:
print m.group('base', 'version', 'release', 'arch')
else:
print 'No match:', name
I figured this out by working from right to left: - always ends with .rpm - everything back to the next . is the arch - everything back to the first (rightmost) - is the release - everything to the next - is version - everything left is the base name
Note the release for perl-DateManip-5.42a-0.rhel3.noarch.rpm is 0.rhel3 not 0 as you gave it.
Kent
Scott W wrote:
Slight correction which I realized after sending, see below for version/release seperation, which I should have seen but blame lack of sleep ;-)
Scott W wrote:
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
corrected versions: 4.3.0 3.2.3d 3 5.42a 1.10
(new) releases: 78.EL 12 4 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
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