/usr/lib/python3/dist-packages/guessit/hash_mpc.py is in python3-guessit 0.11.0-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 | #!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# GuessIt - A library for guessing information from filenames
# Copyright (c) 2013 Nicolas Wack <wackou@gmail.com>
#
# GuessIt is free software; you can redistribute it and/or modify it under
# the terms of the Lesser GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# GuessIt is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# Lesser GNU General Public License for more details.
#
# You should have received a copy of the Lesser GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
from __future__ import absolute_import, division, print_function, unicode_literals
import struct
import os
def hash_file(filename):
"""This function is taken from:
http://trac.opensubtitles.org/projects/opensubtitles/wiki/HashSourceCodes
and is licensed under the GPL."""
longlongformat = b'q' # long long
bytesize = struct.calcsize(longlongformat)
f = open(filename, "rb")
filesize = os.path.getsize(filename)
hash_value = filesize
if filesize < 65536 * 2:
raise Exception("SizeError: size is %d, should be > 132K..." % filesize)
for x in range(int(65536 / bytesize)):
buf = f.read(bytesize)
(l_value,) = struct.unpack(longlongformat, buf)
hash_value += l_value
hash_value &= 0xFFFFFFFFFFFFFFFF # to remain as 64bit number
f.seek(max(0, filesize - 65536), 0)
for x in range(int(65536 / bytesize)):
buf = f.read(bytesize)
(l_value,) = struct.unpack(longlongformat, buf)
hash_value += l_value
hash_value &= 0xFFFFFFFFFFFFFFFF
f.close()
return "%016x" % hash_value
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