import argparse
import codecs
import re

arg_parser = argparse.ArgumentParser(description='Fix invalid XML ids.')
arg_parser.add_argument('-infile', type=str, help='Input file')
arg_parser.add_argument('-outfile', type=str, help='Output file')
arguments = arg_parser.parse_args()
input_file_name = arguments.infile
output_file_name = arguments.outfile

output_file = codecs.open(output_file_name, 'w')
input_file = codecs.open(input_file_name, 'r')

for line in input_file:
    line = re.sub('xml:id="(?=\d)','xml:id="s', line)
    line = line.replace('#', '#s')
    output_file.write(line)
    
input_file.close()
output_file.close()