#!/usr/bin/env python
"""
Escapes a file into a form suitable for use with tool tests using re_match or re_match_multiline (when -m/--multiline option is used)

usage: re_escape_output.py [options] input_file [output_file]
    -m: Use Multiline Matching
"""
import optparse
import re


def __main__():
    parser = optparse.OptionParser()
    parser.add_option("-m", "--multiline", action="store_true", dest="multiline", default=False, help="Use Multiline Matching")
    (options, args) = parser.parse_args()
    input = open(args[0], 'rb')
    if len(args) > 1:
        output = open(args[1], 'wb')
    else:
        if options.multiline:
            suffix = 're_match_multiline'
        else:
            suffix = 're_match'
        output = open("%s.%s" % (args[0], suffix), 'wb')
    if options.multiline:
        lines = [re.escape(input.read())]
    else:
        lines = ["%s\n" % re.escape(line.rstrip('\n\r')) for line in input]
    output.writelines(lines)
    output.close()


if __name__ == "__main__":
    __main__()