"""
Extract links from spam and return ready to paste regular expressions.
"""

import sys
import re
import urlparse

urlPattern = re.compile(r'\bhttps?://[-a-zA-Z0-9./,:;+*%?!&$\(\)_#=~\'"@]+',
                        re.IGNORECASE)

def extractPatterns(text):
    patterns = {}
    for link in urlPattern.findall(text):
        # antispam care only about the network location
        netloc = urlparse.urlparse(link)[1]
        # Ignore www subdomain
        netloc = netloc.replace('www.', '')
        netloc = netloc.replace('.', '\.')
        patterns[netloc] = None
    return patterns.keys()
    

def run():
    text = file(sys.argv[1]).read()
    patterns = extractPatterns(text)
    print '\n'.join(patterns)


if __name__ == '__main__':
    run()