Regex

BlueSpud

I want to implement a regex to force a blank value or a web-address, non-case-sentitive, starting with either http:// or https://. I used to know w bit of regex, but I dont want to revisit just to crack this. Perhaps someone can spit this off the top of their head.

"http://*.*", where I want the prefix followed by domething with a full stop and something on either side of it, and no spaces.

carveone

BlueSpud wrote: »

I want to implement a regex to force a blank value or a web-address, non-case-sentitive, starting with either http:// or https://. I used to know w bit of regex, but I dont want to revisit just to crack this. Perhaps someone can spit this off the top of their head.

"http://*.*", where I want the prefix followed by domething with a full stop and something on either side of it, and no spaces.

Er. Not quite sure exactly what you want but maybe:

tolower(str) ~ /^https?:\/\/[^:space:]+\.[^:space:]+$/

That's awk. In perl I'd put a i after the regexp instead of using tolower.

carveone

Or

/^https?:\/\/[\w\-]+(\.[\w\-]+)+$/

I'd forgotten that Perl has \w for "alphanumeric + underscore" and you can nest pluses. Of course this will match:

http://foo.bar.baz.wibble

You could then have to add more to match:

http://foo.bar.baz.wibble/index.html?do=new&quote=yes&p=%20hello%20

Ie: it is not trivial to do...

Trojan

You might find this RegEx tester useful.
HTH