Spaces:
Running
Running
| # | |
| # 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. | |
| # | |
| from __future__ import annotations | |
| import re | |
| from . import Image, ImageFile | |
| # | |
| # -------------------------------------------------------------------- | |
| field = re.compile(rb"([a-z]*) ([^ \r\n]*)") | |
| ## | |
| # Image plugin for IM Tools images. | |
| class ImtImageFile(ImageFile.ImageFile): | |
| format = "IMT" | |
| format_description = "IM Tools" | |
| def _open(self) -> None: | |
| # Quick rejection: if there's not a LF among the first | |
| # 100 bytes, this is (probably) not a text header. | |
| assert self.fp is not None | |
| buffer = self.fp.read(100) | |
| if b"\n" not in buffer: | |
| msg = "not an IM file" | |
| raise SyntaxError(msg) | |
| xsize = ysize = 0 | |
| while True: | |
| if buffer: | |
| s = buffer[:1] | |
| buffer = buffer[1:] | |
| else: | |
| 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() - len(buffer), | |
| (self.mode, 0, 1), | |
| ) | |
| ] | |
| break | |
| else: | |
| # read key/value pair | |
| if b"\n" not in buffer: | |
| buffer += self.fp.read(100) | |
| lines = buffer.split(b"\n") | |
| s += lines.pop(0) | |
| buffer = b"\n".join(lines) | |
| 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 == b"width": | |
| xsize = int(v) | |
| self._size = xsize, ysize | |
| elif k == b"height": | |
| ysize = int(v) | |
| self._size = xsize, ysize | |
| elif k == b"pixel" and v == b"n8": | |
| self._mode = "L" | |
| # | |
| # -------------------------------------------------------------------- | |
| Image.register_open(ImtImageFile.format, ImtImageFile) | |
| # | |
| # no extension registered (".im" is simply too common) | |