How to extract all urls from a text in ruby?
I tried some libs but it fails in some cases, whats the best way?
+2
A:
You can use regex and .scan()
string.scan(/(https?:\/\/([-\w\.]+)+(:\d+)?(\/([\w\/_\.]*(\?\S+)?)?)?)/)
You can get started with that regex and adjust it according to your needs.
NullUserException
2010-09-08 06:25:22
+1
A:
What cases are failing?
According to the library regexpert, you can use
regexp = /(^$)|(^(http|https):\/\/[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,5}(([0-9]{1,5})?\/.*)?$)/ix
and then perform a scan on the text.
EDIT: Seems like the regexp supports the empty string. Just remove the initial (^$) and you're done
Chubas
2010-09-08 06:32:19
Interesting how this regex fails when the URL is an IP address
NullUserException
2010-09-08 06:52:20
Yep. I actually voted up on your answer because of the "and adjust it according to your needs". It also fails when present a user@password, or using other than https?, or any other weird situation. You probably wouldn't want to read http://tools.ietf.org/html/rfc3986 to get started -_-
Chubas
2010-09-08 07:09:05
It fails as above. I am asking here just why i am unable to "and adjust it according to your needs".
tapioco123
2010-09-08 08:09:27