On Apr 11, 7:21 am, gklc...@googlemail.com (gkl) wrote:
> On Apr 10, 11:03 pm, jwkr...@shaw.ca ("John W. Krahn") wrote:
stion on regular expressions as my
> > > program is working fine but I was just curious.
>
> > > Say you have the following URLs:
>
> > >http://www.test.com/image.gif
> > >http://www.test.com/?src=image.gif?width=12
....
>
> OK. So if I understood you correctly, given the following (actual)
> URLs
>
> http://beta.images.theglobeandmail.com/archive/01258/election_heads__...http://storage.canoe.ca/v1/dynamic_resize/?src=http://www.torontosun....
>
> the following pattern
>
> ^\s*.*\.([a-zA-z]{3})$ | ^\S*\?\S*\.([a-zA-z]{3})&.*$
>
> should match them both. Am I correct?
>
No, there is at least one problem. In your first
alternative, the '.*' will also match the literal '?'
which the second alternative is matching.
See: 'perldoc perlretut' for a review.
[ The URI module which was mentioned will
be a quicker solution and will work work all
cases. ]
--
Charles DeRykus
See: perldoc perlretut
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