#!/usr/bin/env python

import sys
import zipfile
import argparse

parser = argparse.ArgumentParser(description="accept to and from encodings")
parser.add_argument('-O', metavar='decode', default="shift-jis")
parser.add_argument('-I', metavar='encode', default="cp437")
args, files = parser.parse_known_args();

def unzip(filename, encode, decode):
    code = 0
    with zipfile.ZipFile(filename) as myzip:
        for info in myzip.infolist():
            try:
                info.filename = info.filename.encode(encode, 'strict').decode(decode, 'strict')
                myzip.extract(info)
            except Exception as e:
                code = 1
                print("failed to extract {0}: {1}".format(info.filename, e))
    return code

def main(files, encode, decode):
    code = 0
    for file in files:
        if unzip(file, encode, decode) == 1:
            code = 1
    return code

if __name__ == '__main__':
    sys.exit(main(files, args.I, args.O))