>>>Do you have any bnf ?
>>>
>>>I am looking at http://www.ietf.org/rfc/rfc3986.txt and http://www.w3.org/Addressing/URL/5_BNF.html#z18
>>>
>>>Thinking to use the first one and limiting it to http, www, ftp and mailto
>>
>>I haven't had the time to take a look at this yet.
>
>I was just asking whether you had your regex based on a BNF notation. And if yes, do you have a link to it

You may find this function WinHttpCrackUrl http://msdn.microsoft.com/en-us/library/aa384092%28VS.85%29.aspx useful.