1 files changed, 57 insertions, 0 deletions
diff --git a/PIL/TarIO.py b/PIL/TarIO.py
new file mode 100644
index 0000000..fbab8ca
--- /dev/null
+++ b/PIL/TarIO.py
@@ -0,0 +1,57 @@
+#
+# The Python Imaging Library.
+# $Id: TarIO.py 2134 2004-10-06 08:55:20Z fredrik $
+#
+# 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 ContainerIO
+import string
+
+##
+# A file object that provides read access to a given member of a TAR
+# file.
+
+class TarIO(ContainerIO.ContainerIO):
+
+    ##
+    # Create file object.
+    #
+    # @param tarfile Name of TAR file.
+    # @param file Name of member file.
+
+    def __init__(self, tarfile, file):
+
+        fh = open(tarfile, "rb")
+
+        while 1:
+
+            s = fh.read(512)
+            if len(s) != 512:
+                raise IOError, "unexpected end of tar file"
+
+            name = s[:100]
+            i = string.find(name, chr(0))
+            if i == 0:
+                raise IOError, "cannot find subfile"
+            if i > 0:
+                name = name[:i]
+
+            size = string.atoi(s[124:136], 8)
+
+            if file == name:
+                break
+
+            fh.seek((size + 511) & (~511), 1)
+
+        # Open region
+        ContainerIO.ContainerIO.__init__(self, fh, fh.tell(), size)