Gossamer Forum: General: Perl Programming: URL regex

Gossamer Threads

Home : General : Perl Programming :

URL regex

Aug 8, 2002, 6:44 AM

Paul

Veteran (19537 posts)

Aug 8, 2002, 6:44 AM

Post #1 of 10

Shortcut

URL regex

I don't want to start off another of those regex wars but I was trying to come up with something to match URL's properly, or at least to a certain degree....this is what I came up with:

Code:
m|^http://(?:[a-z0-9-]+\.)?[a-z0-9-]+\.[a-z]+(?:\.[a-z]+)?$|i

Can anyone see any obvious problems with it?

Last edited by:

Paul: Aug 8, 2002, 6:44 AM

Aug 8, 2002, 7:06 AM

Dafyyd

User (189 posts)

Aug 8, 2002, 7:06 AM

Post #2 of 10

Shortcut

Re: [Paul] URL regex In reply to

Underscores?

Aug 8, 2002, 8:00 AM

Paul

Veteran (19537 posts)

Aug 8, 2002, 8:00 AM

Post #3 of 10

Shortcut

Re: [giovanni] URL regex In reply to

Underscores aren't valid in domain names are they?

Aug 8, 2002, 8:14 AM

Wil

Veteran / Moderator (4108 posts)

Aug 8, 2002, 8:14 AM

Post #4 of 10

Shortcut

Re: [Paul] URL regex In reply to

Well are you talking about an "URL" as your post title indicates or a domain name? :-)

- wil

Aug 8, 2002, 8:17 AM

Paul

Veteran (19537 posts)

Aug 8, 2002, 8:17 AM

Post #5 of 10

Shortcut

Re: [Wil] URL regex In reply to

Well I thought it would be fairly obvious from the regex I'm talking about a domain name. It would be a pretty crap regex if I was trying to match things like:

http://www.123domain.com/~foo/cgi-bin/secret_location/index1.html

Tongue

Aug 8, 2002, 8:19 AM

Aki

Staff / Moderator (429 posts)

Aug 8, 2002, 8:19 AM

Post #6 of 10

Shortcut

Re: [Paul] URL regex In reply to

Foriegn character domain names?

http://nunames.nu/eu-lang-test.htm

Last edited by:

Aki: Aug 8, 2002, 8:23 AM

Aug 8, 2002, 8:26 AM

Paul

Veteran (19537 posts)

Aug 8, 2002, 8:26 AM

Post #7 of 10

Shortcut

Re: [Aki] URL regex In reply to

ewwwwww

Aug 8, 2002, 10:30 AM

Dafyyd

User (189 posts)

Aug 8, 2002, 10:30 AM

Post #8 of 10

Shortcut

Re: [Paul] URL regex In reply to

In Reply To:

Underscores aren't valid in domain names are they?

Aug 8, 2002, 10:51 AM

Wil

Veteran / Moderator (4108 posts)

Aug 8, 2002, 10:51 AM

Post #9 of 10

Shortcut

Re: [Paul] URL regex In reply to

Maybe this helps:

http://www.ietf.org/rfc/rfc2396.txt

Your regex doesn't support ftp, gopher and other protocols, obviously.

Can I ask what is the point of the exercise, and why you're not using a module?

- wil

Aug 8, 2002, 11:03 AM

Andy

Veteran / Moderator (18441 posts)

Aug 8, 2002, 11:03 AM

Post #10 of 10

Shortcut

Re: [Wil] URL regex In reply to

>>>and why you're not using a module? <<<

LOL...Wil's back with his Modules Tongue

Andy (mod)
andy@ultranerds.co.uk

Gossamer Threads is a Vancouver-based company with over 28 years experience in web technology. From development to hosting, we partner with leading organizations around the globe and help to build their web presences, strategies and infrastructures.

Let’s talk: 1-877-715-7676