#!/usr/bin/env python3

#

# Based on python's Tools/scripts/md5sum.py

#

# This software may be used and distributed according to the terms

# of the PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2, which is

# GPL-compatible.

from __future__ import absolute_import

import hashlib

import os

import sys

try:

    import msvcrt

    msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)

    msvcrt.setmode(sys.stderr.fileno(), os.O_BINARY)

except ImportError:

    pass

for filename in sys.argv[1:]:

    try:

        fp = open(filename, 'rb')

    except IOError as msg:

        sys.stderr.write('%s: Can\'t open: %s\n' % (filename, msg))

        sys.exit(1)

    m = hashlib.md5()

    try:

        for data in iter(lambda: fp.read(8192), b''):

            m.update(data)

    except IOError as msg:

        sys.stderr.write('%s: I/O error: %s\n' % (filename, msg))

        sys.exit(1)

    sys.stdout.write('%s  %s\n' % (m.hexdigest(), filename))

sys.exit(0)