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Cleanup code a bit

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Alexander 2020-01-19 03:15:37 +03:00
parent a520a435d6
commit 3841c96ec6
1 changed files with 33 additions and 36 deletions
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69
src/PIL/JpegImagePlugin.py
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@ -100,42 +100,39 @@ def APP(self, marker):
# reassemble the profile, rather than assuming that the APP2 # reassemble the profile, rather than assuming that the APP2
# markers appear in the correct sequence. # markers appear in the correct sequence.
self.icclist.append(s) self.icclist.append(s)
elif marker == 0xFFED: elif marker == 0xFFED and s[:14] == b"Photoshop 3.0\x00":
if s[:14] == b"Photoshop 3.0\x00": # parse the image resource block
blocks = s[14:] offset = 14
# parse the image resource block photoshop = {}
offset = 0 while s[offset : offset + 4] == b"8BIM":
photoshop = {} offset += 4
while blocks[offset : offset + 4] == b"8BIM": # resource code
offset += 4 try:
# resource code code = i16(s, offset)
try: except struct.error:
code = i16(blocks, offset) break
except struct.error: offset += 2
break # resource name (usually empty)
offset += 2 name_len = i8(s[offset])
# resource name (usually empty) # name = s[offset+1:offset+1+name_len]
name_len = i8(blocks[offset]) offset += 1 + name_len
# name = blocks[offset+1:offset+1+name_len] offset += offset & 1 # align
offset = 1 + offset + name_len # resource data block
if offset & 1: size = i32(s, offset)
offset += 1 offset += 4
# resource data block data = s[offset : offset + size]
size = i32(blocks, offset) if code == 0x03ED: # ResolutionInfo
offset += 4 data = {
data = blocks[offset : offset + size] "XResolution": i32(data[:4]) / 65536,
if code == 0x03ED: # ResolutionInfo "DisplayedUnitsX": i16(data[4:8]),
data = { "YResolution": i32(data[8:12]) / 65536,
"XResolution": i32(data[:4]) / 65536, "DisplayedUnitsY": i16(data[12:]),
"DisplayedUnitsX": i16(data[4:8]), }
"YResolution": i32(data[8:12]) / 65536, photoshop[code] = data
"DisplayedUnitsY": i16(data[12:]), offset += size
} offset += offset & 1 # align
photoshop[code] = data self.info["photoshop"] = photoshop
offset = offset + size
if offset & 1:
offset += 1
self.info["photoshop"] = photoshop
elif marker == 0xFFEE and s[:5] == b"Adobe": elif marker == 0xFFEE and s[:5] == b"Adobe":
self.info["adobe"] = i16(s, 5) self.info["adobe"] = i16(s, 5)
# extract Adobe custom properties # extract Adobe custom properties