Regex for skipping specified URL extensions

Question

My goal is create patter that will be not allow any URLs with extension like this: .ex1, .ex2, .ex3

I was searching a long of time and find some approach, but it's really opposite that I want.

([^\s]+(\.(?i)(ex1|ex2|ex3))$)

If you need ANY ex# to be ignored, you need to state this in your question. We can resolve that! — BlackVegetable
– BlackVegetable, Commented Jul 26, 2013 at 16:56

anubhava · Accepted Answer · 2013-07-26 17:20:26Z

4

If lookbehind is supported then this regex should work:

^\S+$(?<!\.(?:ex1|ex2|ex3)$)

If lookbehind isn't supported (e.g. Javascript) then use this lookahead based regex:

^(?!.*?\.(?:ex1|ex2|ex3)$)\S+$

answered Jul 26, 2013 at 16:51

anubhava

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7 Comments

You had correct syntax before I did. I deleted my answer. +1

Thanks for help. This is really work, but when I try it with .ex11 is matches too:( I guess it will be simply different extension.

.* should probably be \S+.

@arshajii: Yes, sure \S+ will be better.

Sorry it's work perfect. Thanks a lot! I was confusing a little bit :)

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