#!/usr/bin/env python
"""URL encode or decode text."""

from argparse import ArgumentParser
from urllib import parse


def main():
    cli = ArgumentParser(description=__doc__)
    cli.add_argument('command',
                     choices=['encode', 'decode'],
                     help='type of processing to perform on text')
    cli.add_argument('text',
                     nargs='?',
                     help='optional text read from stdin when omitted')
    args = cli.parse_args()
    print({
        'encode': parse.quote_plus,
        'decode': parse.unquote_plus,
    }[args.command](args.text if args.text else input()))


if __name__ == '__main__':
    try:
        main()
    except KeyboardInterrupt:
        exit(130)