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Diffstat (limited to 'lib/Python/Lib/PIL/ImtImagePlugin.py')
-rw-r--r-- | lib/Python/Lib/PIL/ImtImagePlugin.py | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/lib/Python/Lib/PIL/ImtImagePlugin.py b/lib/Python/Lib/PIL/ImtImagePlugin.py new file mode 100644 index 000000000..f512eb801 --- /dev/null +++ b/lib/Python/Lib/PIL/ImtImagePlugin.py @@ -0,0 +1,94 @@ +# +# 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. +# + + +__version__ = "0.2" + +import re + +from PIL import Image, ImageFile + +# +# -------------------------------------------------------------------- + +field = re.compile(br"([a-z]*) ([^ \r\n]*)") + + +## +# Image plugin for IM Tools images. + +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] == 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("IMT", ImtImageFile) + +# +# no extension registered (".im" is simply too common) |