我在 ubuntu 11.10、python 2.7.2+ 上运行以下代码。
import urllib
import Image
import StringIO
source = '/home/cah/Downloads/evil2.gfx'
dataFile = open(source, 'rb').read()
slicedFile1 = StringIO.StringIO(dataFile[::5])
slicedFile2 = StringIO.StringIO(dataFile[1::5])
slicedFile3 = StringIO.StringIO(dataFile[2::5])
slicedFile4 = StringIO.StringIO(dataFile[3::5])
jpgimage1 = Image.open(slicedFile1)
jpgimage1.save('/home/cah/Documents/pychallenge12.1.jpg')
pngimage1 = Image.open(slicedFile2)
pngimage1.save('/home/cah/Documents/pychallenge12.2.png')
gifimage1 = Image.open(slicedFile3)
gifimage1.save('/home/cah/Documents/pychallenge12.3.gif')
pngimage2 = Image.open(slicedFile4)
pngimage2.save('/home/cah/Documents/pychallenge12.4.png')
本质上,我正在获取一个 .bin 文件,该文件具有多个图像文件的十六进制代码,这些图像文件
像 123451234512345 一样混乱......然后聚集在一起然后保存。问题是我收到以下错误:
File "/usr/lib/python2.7/dist-packages/PIL/PngImagePlugin.py", line 96, in read
len = i32(s)
File "/usr/lib/python2.7/dist-packages/PIL/PngImagePlugin.py", line 44, in i32
return ord(c[3]) + (ord(c[2])<<8) + (ord(c[1])<<16) + (ord(c[0])<<24)
IndexError: string index out of range
我找到了 PngImagePlugin.py 并查看了它的内容:
def i32(c):
return ord(c[3]) + (ord(c[2])<<8) + (ord(c[1])<<16) + (ord(c[0])<<24) (line 44)
"Fetch a new chunk. Returns header information."
if self.queue:
cid, pos, len = self.queue[-1]
del self.queue[-1]
self.fp.seek(pos)
else:
s = self.fp.read(8)
cid = s[4:]
pos = self.fp.tell()
len = i32(s) (lines 88-96)
我会尝试修修补补,但我担心我会搞砸 png 和 PIL,它们一直很难工作。
谢谢