#!/usr/bin/env python
import sys
#
# Remove non-ASCII characters in input file(s):
#
def strip_non_ascii(string):
    ''' Returns the string without non ASCII characters'''
    stripped = (c for c in string if 0 < ord(c) < 127)
    return ''.join(stripped)

if len(sys.argv) == 1:
  print '>>> Please provide input files from which to remove non-ASCII characters.'
  sys.exit()

for infile in sys.argv[1:]:
# print 'Reading file ',infile
  f = open(infile,'r')
  lines = f.readlines()
  lines = [line.rstrip() for line in lines]
  f.close()
#
# Overwrite input file:
#
  f = open(infile,'w')
  print 'Overwriting file ',infile,' with non-ASCII characters removed.'
  for line in lines:
    newline = strip_non_ascii(line)
    f.write(newline+'\n')
  f.close()
#
# Write to output file infile.txt:
#
# outfile = infile+'.txt'
# print 'Writing file ',outfile
# f = open(outfile,'w')
# for line in lines:
#   newline = strip_non_ascii(line)
#   f.write(newline+'\n')
# f.close()