Find URI in text: Difference between revisions

sample text:

this URI contains an illegal character, parentheses and a misplaced full stop:

http://en.wikipedia.org/wiki/Erich_Kästner_(camera_designer). (which is handled by http://mediawiki.org/).

leading junk ftp://domain.name/dangling_close_paren)

if you have other interesting URIs for testing, please add them here:

Regular expressions to solve the task are fine, but alternative approaches are welcome too. (otherwise, this task would degrade into 'finding and applying the best regular expression')