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Diffstat (limited to '.venv/lib/python3.12/site-packages/PIL/TarIO.py')
-rw-r--r-- | .venv/lib/python3.12/site-packages/PIL/TarIO.py | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/.venv/lib/python3.12/site-packages/PIL/TarIO.py b/.venv/lib/python3.12/site-packages/PIL/TarIO.py new file mode 100644 index 00000000..779288b1 --- /dev/null +++ b/.venv/lib/python3.12/site-packages/PIL/TarIO.py @@ -0,0 +1,57 @@ +# +# The Python Imaging Library. +# $Id$ +# +# read files from within a tar file +# +# History: +# 95-06-18 fl Created +# 96-05-28 fl Open files in binary mode +# +# Copyright (c) Secret Labs AB 1997. +# Copyright (c) Fredrik Lundh 1995-96. +# +# See the README file for information on usage and redistribution. +# +from __future__ import annotations + +import io + +from . import ContainerIO + + +class TarIO(ContainerIO.ContainerIO[bytes]): + """A file object that provides read access to a given member of a TAR file.""" + + def __init__(self, tarfile: str, file: str) -> None: + """ + Create file object. + + :param tarfile: Name of TAR file. + :param file: Name of member file. + """ + self.fh = open(tarfile, "rb") + + while True: + s = self.fh.read(512) + if len(s) != 512: + msg = "unexpected end of tar file" + raise OSError(msg) + + name = s[:100].decode("utf-8") + i = name.find("\0") + if i == 0: + msg = "cannot find subfile" + raise OSError(msg) + if i > 0: + name = name[:i] + + size = int(s[124:135], 8) + + if file == name: + break + + self.fh.seek((size + 511) & (~511), io.SEEK_CUR) + + # Open region + super().__init__(self.fh, self.fh.tell(), size) |