Convert Xshell 6 *.xsh files to Xshell 5 *.xsh format

xsh6to5.py

#!/usr/bin/env python2
# -*- coding: utf-8 -*-

import ConfigParser
import codecs
import sys
import StringIO

def main():
    config = ConfigParser.RawConfigParser(allow_no_value=True)
    config.optionxform = str
    
    with open(sys.argv[1], 'rb') as f:
        encoded_text = f.read()
    if encoded_text.startswith(codecs.BOM_UTF16_LE):
        encoded_text = encoded_text[len(codecs.BOM_UTF16_LE):]
        buf = StringIO.StringIO(encoded_text.decode('utf-16le'))
    elif encoded_text.startswith(codecs.BOM_UTF8):
        encoded_text = encoded_text[len(codecs.BOM_UTF8):]
        buf = StringIO.StringIO(encoded_text.decode('utf8'))
    else:
        buf = StringIO.StringIO(encoded_text.decode('utf8'))

    config.readfp(buf)
    buf.close()
    config.remove_section('BELL')
    config.remove_section('HIGHLIGHT')
    config.remove_section('ADVANCED')
    config.set('SessionInfo', 'version', '5.3')
    config.remove_option('CONNECTION:SSH', 'SSHCiphers')
    config.remove_option('CONNECTION:SSH', 'SSHMACs')
    config.remove_option('CONNECTION:SSH', 'SSHKeyExchanges')
    config.remove_option('TERMINAL', 'FixedCols')
    buf = StringIO.StringIO()
    config.write(buf)

    with open(sys.argv[1], 'wb') as f:
        f.write(buf.getvalue().replace(' = ', '=').encode('utf8'))

if __name__ == "__main__":
    main()