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d6a0dec15b
Not too convinced of the size fix. While it works against my file, I'm not sure someone would have accidentally been an index off and not noticed.
57 lines
1.2 KiB
Python
57 lines
1.2 KiB
Python
#
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# The Python Imaging Library.
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# $Id$
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#
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# read files from within a tar file
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#
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# History:
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# 95-06-18 fl Created
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# 96-05-28 fl Open files in binary mode
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#
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# Copyright (c) Secret Labs AB 1997.
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# Copyright (c) Fredrik Lundh 1995-96.
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#
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# See the README file for information on usage and redistribution.
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#
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from . import ContainerIO
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##
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# A file object that provides read access to a given member of a TAR
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# file.
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class TarIO(ContainerIO.ContainerIO):
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##
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# Create file object.
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#
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# @param tarfile Name of TAR file.
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# @param file Name of member file.
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def __init__(self, tarfile, file):
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fh = open(tarfile, "rb")
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while True:
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s = fh.read(512)
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if len(s) != 512:
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raise IOError("unexpected end of tar file")
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name = s[:100].decode('utf-8')
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i = name.find('\0')
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if i == 0:
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raise IOError("cannot find subfile")
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if i > 0:
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name = name[:i]
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size = int(s[124:135], 8)
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if file == name:
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break
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fh.seek((size + 511) & (~511), 1)
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# Open region
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ContainerIO.ContainerIO.__init__(self, fh, fh.tell(), size)
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