Fix MPO support, and Python2.6 support.

PIL/JpegImagePlugin.py

@@ -37,7 +37,7 @@ __version__ = "0.6"
 import array
 import struct
 import io
-from struct import unpack
+from struct import unpack_from
 from PIL import Image, ImageFile, TiffImagePlugin, _binary
 from PIL.JpegPresets import presets
 from PIL._util import isStringType
@@ -455,11 +455,12 @@ def _getmp(self):
     except KeyError:
         raise SyntaxError("malformed MP Index (no number of images)")
     # get MP entries
+    mpentries = []
     try:
-        mpentries = []
+        rawmpentries = mp[0xB002]
         for entrynum in range(0, quant):
-            rawmpentry = mp[0xB002][entrynum * 16:(entrynum + 1) * 16]
-            unpackedentry = unpack('{0}LLLHH'.format(endianness), rawmpentry)
+            unpackedentry = unpack_from(
+                '{0}LLLHH'.format(endianness), rawmpentries, entrynum * 16)
             labels = ('Attribute', 'Size', 'DataOffset', 'EntryNo1',
                       'EntryNo2')
             mpentry = dict(zip(labels, unpackedentry))

PIL/TiffImagePlugin.py

@@ -278,10 +278,6 @@ class ImageFileDirectory(collections.MutableMapping):
     prefix = property(lambda self: self._prefix)
     offset = property(lambda self: self._offset)
 
-    @property
-    def offset(self):
-        return self._offset
-
     def reset(self):
         self._tags = {}
         self._tagdata = {}
@@ -301,8 +297,8 @@ class ImageFileDirectory(collections.MutableMapping):
         """
         Returns the complete tag dictionary, with named tags where possible.
         """
-        return {TAGS.get(code, TagInfo()).name: value
-                for code, value in self.items()}
+        return dict((TAGS.get(code, TagInfo()).name, value)
+                    for code, value in self.items())
 
     def __len__(self):
         return len(self._tagdata) + len(self._tags)
@@ -396,7 +392,7 @@ class ImageFileDirectory(collections.MutableMapping):
         TYPES[idx] = name
         size = struct.calcsize("=" + fmt)
         _load_dispatch[idx] = size, lambda self, data: (
-            self._unpack("{}{}".format(len(data) // size, fmt), data))
+            self._unpack("{0}{1}".format(len(data) // size, fmt), data))
         _write_dispatch[idx] = lambda self, *values: (
             b"".join(self._pack(fmt, value) for value in values))
 
@@ -417,7 +413,7 @@ class ImageFileDirectory(collections.MutableMapping):
 
     @_register_loader(5, 8)
     def load_rational(self, data):
-        vals = self._unpack("{}L".format(len(data) // 4), data)
+        vals = self._unpack("{0}L".format(len(data) // 4), data)
         return tuple(num / denom for num, denom in zip(vals[::2], vals[1::2]))
 
     @_register_writer(5)
@@ -435,7 +431,7 @@ class ImageFileDirectory(collections.MutableMapping):
 
     @_register_loader(10, 8)
     def load_signed_rational(self, data):
-        vals = self._unpack("{}l".format(len(data) // 4), data)
+        vals = self._unpack("{0}l".format(len(data) // 4), data)
         return tuple(num / denom for num, denom in zip(vals[::2], vals[1::2]))
 
     @_register_writer(10)

PIL/TiffTags.py

@@ -130,6 +130,13 @@ TAGS = {
 
     # FIXME add more tags here
     34665: ("ExifIFD", 3, 1),
+
+    45056: ("MPFVersion", 7, 1),
+    45057: ("NumberOfImages", 4, 1),
+    45058: ("MPEntry", 7, 1),
+    45059: ("ImageUIDList", 7, 0),
+    45060: ("TotalFrames", 4, 1),
+
     50741: ("MakerNoteSafety", 3, 1, {0: "Unsafe", 1: "Safe"}),
     50780: ("BestQualityScale", 5, 1),
     50838: ("ImageJMetaDataByteCounts", 4, 1),

Tests/test_file_tiff_metadata.py

@@ -4,7 +4,7 @@ from helper import unittest, PillowTestCase, hopper
 
 from PIL import Image, TiffImagePlugin, TiffTags
 
-tag_ids = {info.name: info.value for info in TiffTags.TAGS.values()}
+tag_ids = dict((info.name, info.value) for info in TiffTags.TAGS.values())
 
 
 class TestFileTiffMetadata(PillowTestCase):