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authorLibravatarLibravatar Biswakalyan Bhuyan <biswa@surgot.in> 2022-11-13 23:46:45 +0530
committerLibravatarLibravatar Biswakalyan Bhuyan <biswa@surgot.in> 2022-11-13 23:46:45 +0530
commit9468226a9e2e2ab8cdd599f1d8538e860ca86120 (patch)
tree0a77ada226d6db80639f96b438bf83e4e756edb5 /env/lib/python3.10/site-packages/PIL/TarIO.py
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diff --git a/env/lib/python3.10/site-packages/PIL/TarIO.py b/env/lib/python3.10/site-packages/PIL/TarIO.py
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+#
+# 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.
+#
+
+import io
+
+from . import ContainerIO
+
+
+class TarIO(ContainerIO.ContainerIO):
+ """A file object that provides read access to a given member of a TAR file."""
+
+ def __init__(self, tarfile, file):
+ """
+ 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:
+ raise OSError("unexpected end of tar file")
+
+ name = s[:100].decode("utf-8")
+ i = name.find("\0")
+ if i == 0:
+ raise OSError("cannot find subfile")
+ 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)
+
+ # Context manager support
+ def __enter__(self):
+ return self
+
+ def __exit__(self, *args):
+ self.close()
+
+ def close(self):
+ self.fh.close()