#!/usr/bin/env python

"""
Encode/decode url strings in stdin or the given file(s).
"""

import getopt
import fileinput
import sys
import os
try:
    from urllib.parse import quote_plus, quote, unquote_plus, unquote
except ImportError:
    from urllib import quote_plus, quote, unquote_plus, unquote


def usage():
    """Print out help for this script"""
    print("Usage: {} [-edEDh] file1[ file2[ ...]]".format(os.path.basename(sys.argv[0])))


def main(commands):
    try:
        optlist, args = getopt.getopt(sys.argv[1:], 'edEDh')
        sys.argv = [sys.argv[0]] + args
    except getopt.GetoptError as err:
        print(err)
        sys.exit(1)

    action = quote
    for flag, _ in optlist:
        if flag in commands:
            action = commands[flag]
        elif flag == '-h':
            usage()
            sys.exit()
        else:
            assert False, "unhandled option"

    print(action("\n".join([line for line in fileinput.input()]).strip()))


if __name__ == '__main__':
    main({
        "-e": quote,
        "-E": quote_plus,
        "-d": unquote,
        "-D": unquote_plus
    })