Source code for PIL.ImtImagePlugin

#
# The Python Imaging Library.
# $Id$
#
# IM Tools support for PIL
#
# history:
# 1996-05-27 fl   Created (read 8-bit images only)
# 2001-02-17 fl   Use 're' instead of 'regex' (Python 2.1) (0.2)
#
# Copyright (c) Secret Labs AB 1997-2001.
# Copyright (c) Fredrik Lundh 1996-2001.
#
# See the README file for information on usage and redistribution.
#


import re

from . import Image, ImageFile

__version__ = "0.2"


#
# --------------------------------------------------------------------

field = re.compile(br"([a-z]*) ([^ \r\n]*)")


##
# Image plugin for IM Tools images.

[docs]class ImtImageFile(ImageFile.ImageFile): format = "IMT" format_description = "IM Tools" def _open(self): # Quick rejection: if there's not a LF among the first # 100 bytes, this is (probably) not a text header. if b"\n" not in self.fp.read(100): raise SyntaxError("not an IM file") self.fp.seek(0) xsize = ysize = 0 while True: s = self.fp.read(1) if not s: break if s == b'\x0C': # image data begins self.tile = [("raw", (0, 0)+self.size, self.fp.tell(), (self.mode, 0, 1))] break else: # read key/value pair # FIXME: dangerous, may read whole file s = s + self.fp.readline() if len(s) == 1 or len(s) > 100: break if s[0] == ord(b"*"): continue # comment m = field.match(s) if not m: break k, v = m.group(1, 2) if k == "width": xsize = int(v) self._size = xsize, ysize elif k == "height": ysize = int(v) self._size = xsize, ysize elif k == "pixel" and v == "n8": self.mode = "L"
# # -------------------------------------------------------------------- Image.register_open(ImtImageFile.format, ImtImageFile) # # no extension registered (".im" is simply too common)