compare two urls

vit has asked for the wisdom of the Perl Monks concerning the following question:

Dear Monks,
I do not want to reinvent the wheel. So what would be the best way to compare the "root part" of two urls.
For example

http://xyz.com
and
www.xyz.com
and
...xyz.com/something......
[download]

should be the same. I need to make sure that xyz is the same.
I am ready to sacrifice difference between xyz.com, xyz.net, etc.

Comment on compare two urls Download Code

Replies are listed 'Best First'.
Re: compare two urls by Anonymous Monk on Jul 15, 2009 at 15:27 UTC
use URI or Regexp::Common::URI	[reply]
Re: compare two urls by ikegami (Patriarch) on Jul 15, 2009 at 15:44 UTC
As far as we can tell, "www.xyz.com" doesn't share the same "root part" as "http://xyz.com". "www.xyz.com" means ".../www.xyz.com" if it's a URI as you claim.	[reply]
Re: compare two urls by mzedeler (Pilgrim) on Jul 15, 2009 at 18:14 UTC
As suggested by others, the URI module is a good place to start, but you are not being sufficiently explicit wrt the requirements. If you want an algorithm that claims that the following two URIs are identical: `http://www.xyz.com/` and `http://xyz.com/` Then please note that they are not guaranteed to point to the same web pages.	[reply] [d/l] [select]