#!/usr/bin/python
"""Normalizes the NTriples output from CWM."""
import sys, re

def normalize(f): 
   s = f.read().replace('\r', '')
   longs = re.compile(r'"""[^"\\]*(?:(?:\\.|"(?!""))[^"\\]*)*"""', re.S).findall(s)
   for long in longs: s = s.replace(long, long.replace('\n', '\\n')[2:-2])
   s = s.replace('\t', ' ')
   while s.count('  ') > 0: s = s.replace('  ', ' ')
   s = '\n'.join([line.strip() for line in s.split('\n')]).strip()
   while s.count('\n\n') > 0: s = s.replace('\n\n', '\n')
   s = '\n'.join(filter(lambda x: x[0] != '#', s.split('\n'))).strip()
   return s

if __name__=="__main__": 
   if ('-p' in sys.argv) or ('--p' in sys.argv): print normalize(sys.stdin)
   elif len(sys.argv) > 1: print normalize(open(sys.argv[1], 'r'))
   else: print __doc__