python-pillow/Pillow
1
1
Fork 0
mirror of https://github.com/python-pillow/Pillow.git synced 2024-12-26 09:56:17 +03:00
Code Issues Packages Projects Releases Wiki Activity

use offset for all binary input functions instead of slicing

Browse Source
This commit is contained in:
Alexander 2020-05-08 21:11:58 +03:00 committed by Andrew Murray
parent 3757b8c748
commit 1ff61bcaa6
18 changed files with 82 additions and 82 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
src/PIL/BmpImagePlugin.py
View File

@ -51,7 +51,7 @@ def _accept(prefix):
def _dib_accept(prefix):
return i32(prefix[:4]) in [12, 40, 64, 108, 124]
return i32(prefix) in [12, 40, 64, 108, 124]
# =============================================================================
@ -86,10 +86,10 @@ class BmpImageFile(ImageFile.ImageFile):
# -------------------------------------------------- IBM OS/2 Bitmap v1
# ----- This format has different offsets because of width/height types
if file_info["header_size"] == 12:
file_info["width"] = i16(header_data[0:2])
file_info["height"] = i16(header_data[2:4])
file_info["planes"] = i16(header_data[4:6])
file_info["bits"] = i16(header_data[6:8])
file_info["width"] = i16(header_data, 0)
file_info["height"] = i16(header_data, 2)
file_info["planes"] = i16(header_data, 4)
file_info["bits"] = i16(header_data, 6)
file_info["compression"] = self.RAW
file_info["palette_padding"] = 3
@ -98,22 +98,22 @@ class BmpImageFile(ImageFile.ImageFile):
elif file_info["header_size"] in (40, 64, 108, 124):
file_info["y_flip"] = header_data[7] == 0xFF
file_info["direction"] = 1 if file_info["y_flip"] else -1
file_info["width"] = i32(header_data[0:4])
file_info["width"] = i32(header_data, 0)
file_info["height"] = (
i32(header_data[4:8])
i32(header_data, 4)
if not file_info["y_flip"]
else 2 ** 32 - i32(header_data[4:8])
else 2 ** 32 - i32(header_data, 4)
)
file_info["planes"] = i16(header_data[8:10])
file_info["bits"] = i16(header_data[10:12])
file_info["compression"] = i32(header_data[12:16])
file_info["planes"] = i16(header_data, 8)
file_info["bits"] = i16(header_data, 10)
file_info["compression"] = i32(header_data, 12)
# byte size of pixel data
file_info["data_size"] = i32(header_data[16:20])
file_info["data_size"] = i32(header_data, 16)
file_info["pixels_per_meter"] = (
i32(header_data[20:24]),
i32(header_data[24:28]),
i32(header_data, 20),
i32(header_data, 24),
)
file_info["colors"] = i32(header_data[28:32])
file_info["colors"] = i32(header_data, 28)
file_info["palette_padding"] = 4
self.info["dpi"] = tuple(
int(x / 39.3701 + 0.5) for x in file_info["pixels_per_meter"]
@ -123,7 +123,7 @@ class BmpImageFile(ImageFile.ImageFile):
for idx, mask in enumerate(
["r_mask", "g_mask", "b_mask", "a_mask"]
):
file_info[mask] = i32(header_data[36 + idx * 4 : 40 + idx * 4])
file_info[mask] = i32(header_data, 36 + idx * 4)
else:
# 40 byte headers only have the three components in the
# bitfields masks, ref:
@ -266,7 +266,7 @@ class BmpImageFile(ImageFile.ImageFile):
if not _accept(head_data):
raise SyntaxError("Not a BMP file")
# read the start position of the BMP image data (u32)
offset = i32(head_data[10:14])
offset = i32(head_data, 10)
# load bitmap information (offset=raster info)
self._bitmap(offset=offset)

4
src/PIL/CurImagePlugin.py
View File

@ -47,7 +47,7 @@ class CurImageFile(BmpImagePlugin.BmpImageFile):
# pick the largest cursor in the file
m = b""
for i in range(i16(s[4:])):
for i in range(i16(s, 4)):
s = self.fp.read(16)
if not m:
m = s
@ -57,7 +57,7 @@ class CurImageFile(BmpImagePlugin.BmpImageFile):
raise TypeError("No cursors were found")
# load as bitmap
self._bitmap(i32(m[12:]) + offset)
self._bitmap(i32(m, 12) + offset)
# patch up the bitmap height
self._size = self.size[0], self.size[1] // 2

6
src/PIL/EpsImagePlugin.py
View File

@ -312,14 +312,14 @@ class EpsImageFile(ImageFile.ImageFile):
fp.seek(0, io.SEEK_END)
length = fp.tell()
offset = 0
elif i32(s[0:4]) == 0xC6D3D0C5:
elif i32(s, 0) == 0xC6D3D0C5:
# FIX for: Some EPS file not handled correctly / issue #302
# EPS can contain binary data
# or start directly with latin coding
# more info see:
# https://web.archive.org/web/20160528181353/http://partners.adobe.com/public/developer/en/ps/5002.EPSF_Spec.pdf
offset = i32(s[4:8])
length = i32(s[8:12])
offset = i32(s, 4)
length = i32(s, 8)
else:
raise SyntaxError("not an EPS file")

20
src/PIL/FliImagePlugin.py
View File

@ -26,7 +26,7 @@ from ._binary import o8
def _accept(prefix):
return len(prefix) >= 6 and i16(prefix[4:6]) in [0xAF11, 0xAF12]
return len(prefix) >= 6 and i16(prefix, 4) in [0xAF11, 0xAF12]
##
@ -46,22 +46,22 @@ class FliImageFile(ImageFile.ImageFile):
s = self.fp.read(128)
if not (
_accept(s)
and i16(s[14:16]) in [0, 3] # flags
and i16(s, 14) in [0, 3] # flags
and s[20:22] == b"\x00\x00" # reserved
):
raise SyntaxError("not an FLI/FLC file")
# frames
self.n_frames = i16(s[6:8])
self.n_frames = i16(s, 6)
self.is_animated = self.n_frames > 1
# image characteristics
self.mode = "P"
self._size = i16(s[8:10]), i16(s[10:12])
self._size = i16(s, 8), i16(s, 10)
# animation speed
duration = i32(s[16:20])
magic = i16(s[4:6])
duration = i32(s, 16)
magic = i16(s, 4)
if magic == 0xAF11:
duration = (duration * 1000) // 70
self.info["duration"] = duration
@ -73,17 +73,17 @@ class FliImageFile(ImageFile.ImageFile):
self.__offset = 128
if i16(s[4:6]) == 0xF100:
if i16(s, 4) == 0xF100:
# prefix chunk; ignore it
self.__offset = self.__offset + i32(s)
s = self.fp.read(16)
if i16(s[4:6]) == 0xF1FA:
if i16(s, 4) == 0xF1FA:
# look for palette chunk
s = self.fp.read(6)
if i16(s[4:6]) == 11:
if i16(s, 4) == 11:
self._palette(palette, 2)
elif i16(s[4:6]) == 4:
elif i16(s, 4) == 4:
self._palette(palette, 0)
palette = [o8(r) + o8(g) + o8(b) for (r, g, b) in palette]

2
src/PIL/GbrImagePlugin.py
View File

@ -29,7 +29,7 @@ from ._binary import i32be as i32
def _accept(prefix):
return len(prefix) >= 8 and i32(prefix[:4]) >= 20 and i32(prefix[4:8]) in (1, 2)
return len(prefix) >= 8 and i32(prefix, 0) >= 20 and i32(prefix, 4) in (1, 2)
##

6
src/PIL/GdImageFile.py
View File

@ -48,17 +48,17 @@ class GdImageFile(ImageFile.ImageFile):
# Header
s = self.fp.read(1037)
if not i16(s[:2]) in [65534, 65535]:
if not i16(s) in [65534, 65535]:
raise SyntaxError("Not a valid GD 2.x .gd file")
self.mode = "L" # FIXME: "P"
self._size = i16(s[2:4]), i16(s[4:6])
self._size = i16(s, 2), i16(s, 4)
trueColor = s[6]
trueColorOffset = 2 if trueColor else 0
# transparency index
tindex = i32(s[7 + trueColorOffset : 7 + trueColorOffset + 4])
tindex = i32(s, 7 + trueColorOffset)
if tindex < 256:
self.info["transparency"] = tindex

10
src/PIL/GifImagePlugin.py
View File

@ -69,7 +69,7 @@ class GifImageFile(ImageFile.ImageFile):
raise SyntaxError("not a GIF file")
self.info["version"] = s[:6]
self._size = i16(s[6:]), i16(s[8:])
self._size = i16(s, 6), i16(s, 8)
self.tile = []
flags = s[10]
bits = (flags & 7) + 1
@ -193,7 +193,7 @@ class GifImageFile(ImageFile.ImageFile):
flags = block[0]
if flags & 1:
info["transparency"] = block[3]
info["duration"] = i16(block[1:3]) * 10
info["duration"] = i16(block, 1) * 10
# disposal method - find the value of bits 4 - 6
dispose_bits = 0b00011100 & flags
@ -223,7 +223,7 @@ class GifImageFile(ImageFile.ImageFile):
if block[:11] == b"NETSCAPE2.0":
block = self.data()
if len(block) >= 3 and block[0] == 1:
info["loop"] = i16(block[1:3])
info["loop"] = i16(block, 1)
while self.data():
pass
@ -234,8 +234,8 @@ class GifImageFile(ImageFile.ImageFile):
s = self.fp.read(9)
# extent
x0, y0 = i16(s[0:]), i16(s[2:])
x1, y1 = x0 + i16(s[4:]), y0 + i16(s[6:])
x0, y0 = i16(s, 0), i16(s, 2)
x1, y1 = x0 + i16(s, 4), y0 + i16(s, 6)
if x1 > self.size[0] or y1 > self.size[1]:
self._size = max(x1, self.size[0]), max(y1, self.size[1])
self.dispose_extent = x0, y0, x1, y1

10
src/PIL/IcoImagePlugin.py
View File

@ -102,7 +102,7 @@ class IcoFile:
self.entry = []
# Number of items in file
self.nb_items = i16(s[4:])
self.nb_items = i16(s, 4)
# Get headers for each item
for i in range(self.nb_items):
@ -113,10 +113,10 @@ class IcoFile:
"height": s[1],
"nb_color": s[2], # No. of colors in image (0 if >=8bpp)
"reserved": s[3],
"planes": i16(s[4:]),
"bpp": i16(s[6:]),
"size": i32(s[8:]),
"offset": i32(s[12:]),
"planes": i16(s, 4),
"bpp": i16(s, 6),
"size": i32(s, 8),
"offset": i32(s, 12),
}
# See Wikipedia

2
src/PIL/Image.py
View File

@ -3374,7 +3374,7 @@ class Exif(MutableMapping):
if self[0x927C][:8] == b"FUJIFILM":
exif_data = self[0x927C]
ifd_offset = i32le(exif_data[8:12])
ifd_offset = i32le(exif_data, 8)
ifd_data = exif_data[ifd_offset:]
makernote = {}

2
src/PIL/IptcImagePlugin.py
View File

@ -77,7 +77,7 @@ class IptcImageFile(ImageFile.ImageFile):
elif size > 128:
size = i(self.fp.read(size - 128))
else:
size = i16(s[3:])
size = i16(s, 3)
return tag, size

10
src/PIL/JpegImagePlugin.py
View File

@ -124,10 +124,10 @@ def APP(self, marker):
data = s[offset : offset + size]
if code == 0x03ED: # ResolutionInfo
data = {
"XResolution": i32(data[:4]) / 65536,
"DisplayedUnitsX": i16(data[4:8]),
"YResolution": i32(data[8:12]) / 65536,
"DisplayedUnitsY": i16(data[12:]),
"XResolution": i32(data, 0) / 65536,
"DisplayedUnitsX": i16(data, 4),
"YResolution": i32(data, 8) / 65536,
"DisplayedUnitsY": i16(data, 12),
}
photoshop[code] = data
offset += size
@ -194,7 +194,7 @@ def SOF(self, marker):
n = i16(self.fp.read(2)) - 2
s = ImageFile._safe_read(self.fp, n)
self._size = i16(s[3:]), i16(s[1:])
self._size = i16(s, 3), i16(s, 1)
self.bits = s[0]
if self.bits != 8:

4
src/PIL/MspImagePlugin.py
View File

@ -58,12 +58,12 @@ class MspImageFile(ImageFile.ImageFile):
# Header checksum
checksum = 0
for i in range(0, 32, 2):
checksum = checksum ^ i16(s[i : i + 2])
checksum = checksum ^ i16(s, i)
if checksum != 0:
raise SyntaxError("bad MSP checksum")
self.mode = "1"
self._size = i16(s[4:]), i16(s[6:])
self._size = i16(s, 4), i16(s, 6)
if s[:4] == b"DanM":
self.tile = [("raw", (0, 0) + self.size, 32, ("1", 0, 1))]

4
src/PIL/PixarImagePlugin.py
View File

@ -49,10 +49,10 @@ class PixarImageFile(ImageFile.ImageFile):
# read rest of header
s = s + self.fp.read(508)
self._size = i16(s[418:420]), i16(s[416:418])
self._size = i16(s, 418), i16(s, 416)
# get channel/depth descriptions
mode = i16(s[424:426]), i16(s[426:428])
mode = i16(s, 424), i16(s, 426)
if mode == (14, 2):
self.mode = "RGB"

14
src/PIL/PngImagePlugin.py
View File

@ -409,7 +409,7 @@ class PngStream(ChunkStream):
# image header
s = ImageFile._safe_read(self.fp, length)
self.im_size = i32(s), i32(s[4:])
self.im_size = i32(s, 0), i32(s, 4)
try:
self.im_mode, self.im_rawmode = _MODES[(s[8], s[9])]
except Exception:
@ -464,7 +464,7 @@ class PngStream(ChunkStream):
elif self.im_mode in ("1", "L", "I"):
self.im_info["transparency"] = i16(s)
elif self.im_mode == "RGB":
self.im_info["transparency"] = i16(s), i16(s[2:]), i16(s[4:])
self.im_info["transparency"] = i16(s), i16(s, 2), i16(s, 4)
return s
def chunk_gAMA(self, pos, length):
@ -497,7 +497,7 @@ class PngStream(ChunkStream):
# pixels per unit
s = ImageFile._safe_read(self.fp, length)
px, py = i32(s), i32(s[4:])
px, py = i32(s, 0), i32(s, 4)
unit = s[8]
if unit == 1: # meter
dpi = int(px * 0.0254 + 0.5), int(py * 0.0254 + 0.5)
@ -618,7 +618,7 @@ class PngStream(ChunkStream):
warnings.warn("Invalid APNG, will use default PNG image if possible")
return s
self.im_n_frames = n_frames
self.im_info["loop"] = i32(s[4:])
self.im_info["loop"] = i32(s, 4)
self.im_custom_mimetype = "image/apng"
return s
@ -630,13 +630,13 @@ class PngStream(ChunkStream):
):
raise SyntaxError("APNG contains frame sequence errors")
self._seq_num = seq
width, height = i32(s[4:]), i32(s[8:])
px, py = i32(s[12:]), i32(s[16:])
width, height = i32(s, 4), i32(s, 8)
px, py = i32(s, 12), i32(s, 16)
im_w, im_h = self.im_size
if px + width > im_w or py + height > im_h:
raise SyntaxError("APNG contains invalid frames")
self.im_info["bbox"] = (px, py, px + width, py + height)
delay_num, delay_den = i16(s[20:]), i16(s[22:])
delay_num, delay_den = i16(s, 20), i16(s, 22)
if delay_den == 0:
delay_den = 100
self.im_info["duration"] = float(delay_num) / float(delay_den) * 1000

12
src/PIL/PsdImagePlugin.py
View File

@ -63,12 +63,12 @@ class PsdImageFile(ImageFile.ImageFile):
# header
s = read(26)
if not _accept(s) or i16(s[4:]) != 1:
if not _accept(s) or i16(s, 4) != 1:
raise SyntaxError("not a PSD file")
psd_bits = i16(s[22:])
psd_channels = i16(s[12:])
psd_mode = i16(s[24:])
psd_bits = i16(s, 22)
psd_channels = i16(s, 12)
psd_mode = i16(s, 24)
mode, channels = MODES[(psd_mode, psd_bits)]
@ -76,7 +76,7 @@ class PsdImageFile(ImageFile.ImageFile):
raise OSError("not enough channels")
self.mode = mode
self._size = i32(s[18:]), i32(s[14:])
self._size = i32(s, 18), i32(s, 14)
#
# color mode data
@ -291,7 +291,7 @@ def _maketile(file, mode, bbox, channels):
layer += ";I"
tile.append(("packbits", bbox, offset, layer))
for y in range(ysize):
offset = offset + i16(bytecount[i : i + 2])
offset = offset + i16(bytecount, i)
i += 2
file.seek(offset)

8
src/PIL/SgiImagePlugin.py
View File

@ -69,16 +69,16 @@ class SgiImageFile(ImageFile.ImageFile):
bpc = s[3]
# dimension : 1, 2 or 3 (depending on xsize, ysize and zsize)
dimension = i16(s[4:])
dimension = i16(s, 4)
# xsize : width
xsize = i16(s[6:])
xsize = i16(s, 6)
# ysize : height
ysize = i16(s[8:])
ysize = i16(s, 8)
# zsize : channels count
zsize = i16(s[10:])
zsize = i16(s, 10)
# layout
layout = bpc, dimension, zsize

12
src/PIL/SunImagePlugin.py
View File

@ -58,13 +58,13 @@ class SunImageFile(ImageFile.ImageFile):
offset = 32
self._size = i32(s[4:8]), i32(s[8:12])
self._size = i32(s, 4), i32(s, 8)
depth = i32(s[12:16])
# data_length = i32(s[16:20]) # unreliable, ignore.
file_type = i32(s[20:24])
palette_type = i32(s[24:28]) # 0: None, 1: RGB, 2: Raw/arbitrary
palette_length = i32(s[28:32])
depth = i32(s, 12)
# data_length = i32(s, 16) # unreliable, ignore.
file_type = i32(s, 20)
palette_type = i32(s, 24) # 0: None, 1: RGB, 2: Raw/arbitrary
palette_length = i32(s, 28)
if depth == 1:
self.mode, rawmode = "1", "1;I"

4
src/PIL/TgaImagePlugin.py
View File

@ -64,7 +64,7 @@ class TgaImageFile(ImageFile.ImageFile):
flags = s[17]
self._size = i16(s[12:]), i16(s[14:])
self._size = i16(s, 12), i16(s, 14)
# validate header fields
if (
@ -110,7 +110,7 @@ class TgaImageFile(ImageFile.ImageFile):
if colormaptype:
# read palette
start, size, mapdepth = i16(s[3:]), i16(s[5:]), i16(s[7:])
start, size, mapdepth = i16(s, 3), i16(s, 5), i16(s, 7)
if mapdepth == 16:
self.palette = ImagePalette.raw(
"BGR;16", b"\0" * 2 * start + self.fp.read(2 * size)