On Tue, Nov 26, 2013 at 10:52:43AM -0500, Tom Limoncelli wrote:
> How's this for a regular expression? It works on all the test cases
> I've written so far.
>
> #! /usr/bin/python
>
> import sys
> import re
>
> for x in sys.argv[1:]:
> m = re.search(r'(.*)/*(.*)-(.*)-(.*?)\.(.*)(\.rpm)', x)
> if m:
> (path, name, version, release, platform, _) = m.groups()
> path = path or ''
> verrel = version + '-' + release
> print "\t".join([path, name, verrel, version, release, platform])
> else:
> sys.stderr.write('ERROR: Invalid name: %s\n' % x)
> sys.exit(1)
This won't work. Your path will include the name (first (.*) is eating all),
your /* will be empty and the second (.*) will be empty too.
This one will work I think:
m = re.search(r'(.*?)([^/]+)-([^-/]+)-([^-/]+)\.([^\./]+)(\.rpm)', x)
This can be shorter, but I linke more explicit expressions like [^\./].
You could make life easier by separating path and filename via the
basename utility and then use a much simpler expression.
Note: formally this does NOT guarantee the tags of the file, as
you of course could rename a generated rpm file to whatever you want
(and you can even ask rpmbuild to generate a different filename).
Furthermore, purely theoretical (AFAIK) an rpm package could have a
version or release containing a dash, but I've never seen one "in
the wild" and probably rpmbuild prohibits building one.
--
-- Jos Vos <jos@xxxxxx>
-- X/OS Experts in Open Systems BV | Phone: +31 20 6938364
-- Amsterdam, The Netherlands | Fax: +31 20 6948204
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