Poorly performing regex
- by Kieron
I've a really poorly performing piece of regex, currently it makes Firefox, Chrome and IE hang for a period of time.
Here's the reg-ex:
^([a-zA-Z0-9]+[/]?)+[a-zA-Z0-9]+$
It's kind of a url matcher, but should only match the requested path (not starting with or ending with a slash).
Valid examples:
Segment
Segment/Segment
segment/segment/Segment (etc)
Invalid examples:
/Segment
Segment/
Segment/Segment/
Using the regex above over all three browsers and using two or more slashes causes the browsers to hang.
It's obviously a poorly formed reg-ex, but can anyone help build a better one?
Thanks,