#!/usr/bin/env python
#
# find all URL's and return them
# regex from http://gnosis.cx/TPiP/

import re

links = []

f = file('logovi','r').read()
pat = r'''  (?x)(       # verbose identify URLs within text
(http|https|ftp|gopher) # make sure we find a resource type
                    :// # ...needs to be followed by colon-slash-slash
              [^ \n\r]+ # some stuff then space, newline, tab is URL
                     \w # URL always ends in alphanumeric char
            (?=[\s\.,]) # assert: followed by whitespace/period/comma
                      ) # end of match group'''

links = re.findall(pat, f)

for url in links:
    print url[0]