68 lines
2.1 KiB
Python
68 lines
2.1 KiB
Python
# -*- coding: utf-8 -*-
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# vi:si:et:sw=4:sts=4:ts=4
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# GPL 2008
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from __future__ import division
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import os
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import hashlib
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import sys
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import struct
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import subprocess
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import simplejson
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__all__ = ['sha1sum', 'oshash', 'avinfo']
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def sha1sum(filename):
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sha1 = hashlib.sha1()
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file=open(filename)
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buffer=file.read(4096)
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while buffer:
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sha1.update(buffer)
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buffer=file.read(4096)
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file.close()
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return sha1.hexdigest()
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'''
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os hash - http://trac.opensubtitles.org/projects/opensubtitles/wiki/HashSourceCodes
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plus modification for files < 64k, buffer is filled with file data and padded with 0
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'''
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def oshash(filename):
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try:
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longlongformat = 'q' # long long
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bytesize = struct.calcsize(longlongformat)
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f = open(filename, "rb")
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filesize = os.path.getsize(filename)
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hash = filesize
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if filesize < 65536:
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for x in range(int(filesize/bytesize)):
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buffer = f.read(bytesize)
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(l_value,)= struct.unpack(longlongformat, buffer)
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hash += l_value
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hash = hash & 0xFFFFFFFFFFFFFFFF #to remain as 64bit number
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else:
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for x in range(int(65536/bytesize)):
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buffer = f.read(bytesize)
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(l_value,)= struct.unpack(longlongformat, buffer)
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hash += l_value
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hash = hash & 0xFFFFFFFFFFFFFFFF #to remain as 64bit number
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f.seek(max(0,filesize-65536),0)
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for x in range(int(65536/bytesize)):
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buffer = f.read(bytesize)
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(l_value,)= struct.unpack(longlongformat, buffer)
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hash += l_value
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hash = hash & 0xFFFFFFFFFFFFFFFF
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f.close()
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returnedhash = "%016x" % hash
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return returnedhash
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except(IOError):
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return "IOError"
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def avinfo(filename):
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if os.path.getsize(filename):
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p = subprocess.Popen(['ffmpeg2theora', '--info', filename], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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info, error = p.communicate()
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return simplejson.loads(info)
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return {'path': filename, 'size': 0}
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