up follow livre

venv/lib/python3.13/site-packages/PIL/ImtImagePlugin.py

@@ -0,0 +1,103 @@
+#
+# 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 = [
+                    ImageFile._Tile(
+                        "raw",
+                        (0, 0) + self.size,
+                        self.fp.tell() - len(buffer),
+                        self.mode,
+                    )
+                ]
+
+                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)