Mega Code Archive
Get only http and https based url
<![CDATA[
require 'uri'
text = %{"test
<a href="http://www.example.com/">http://www.example.com/</a>, and be sure
to check out my weblog at http://www.example.com/blog/. Email me at <a
href="mailto:bob@example.com">b@e.com</a>.}
URI.extract(text, ['http', 'https'])
]]>