import argparse


def convert(f):
    """ Converts a mifare text file into an array of bytes. """
    output = []
    # iterate each line in the file
    for line in f:
        # if the line begins with +, it is marking the sector so ignore
        if line.startswith('+'):
            continue
        # iterate each 2 chars in the line
        for i in range(0, len(line)-1, 2):
            # read the next two chars and convert from hex
            output.append(int(line[i:i+2], base=16))

    return bytes(output)


def main():
    parser = argparse.ArgumentParser(
        description='Convert a MiFare Text dump to a binary dump')
    parser.add_argument('input', help='Input file', type=str)
    parser.add_argument('output', help='Output file', type=str)

    args = parser.parse_args()
    infile, outfile = args['input'], args['output']

    # open input file and output file
    with open(infile, 'r') as fin, open(outfile, 'wb') as fout:
        # write converted bytes from fin to fout
        fout.write(convert(fin))


if __name__ == '__main__':
    main()