update to python fastpi

Backend/venv/lib/python3.12/site-packages/PIL/FitsImagePlugin.py

@@ -0,0 +1,73 @@
+#
+# The Python Imaging Library
+# $Id$
+#
+# FITS file handling
+#
+# Copyright (c) 1998-2003 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+import math
+
+from . import Image, ImageFile
+
+
+def _accept(prefix):
+    return prefix[:6] == b"SIMPLE"
+
+
+class FitsImageFile(ImageFile.ImageFile):
+    format = "FITS"
+    format_description = "FITS"
+
+    def _open(self):
+        headers = {}
+        while True:
+            header = self.fp.read(80)
+            if not header:
+                msg = "Truncated FITS file"
+                raise OSError(msg)
+            keyword = header[:8].strip()
+            if keyword == b"END":
+                break
+            value = header[8:].split(b"/")[0].strip()
+            if value.startswith(b"="):
+                value = value[1:].strip()
+            if not headers and (not _accept(keyword) or value != b"T"):
+                msg = "Not a FITS file"
+                raise SyntaxError(msg)
+            headers[keyword] = value
+
+        naxis = int(headers[b"NAXIS"])
+        if naxis == 0:
+            msg = "No image data"
+            raise ValueError(msg)
+        elif naxis == 1:
+            self._size = 1, int(headers[b"NAXIS1"])
+        else:
+            self._size = int(headers[b"NAXIS1"]), int(headers[b"NAXIS2"])
+
+        number_of_bits = int(headers[b"BITPIX"])
+        if number_of_bits == 8:
+            self._mode = "L"
+        elif number_of_bits == 16:
+            self._mode = "I"
+            # rawmode = "I;16S"
+        elif number_of_bits == 32:
+            self._mode = "I"
+        elif number_of_bits in (-32, -64):
+            self._mode = "F"
+            # rawmode = "F" if number_of_bits == -32 else "F;64F"
+
+        offset = math.ceil(self.fp.tell() / 2880) * 2880
+        self.tile = [("raw", (0, 0) + self.size, offset, (self.mode, 0, -1))]
+
+
+# --------------------------------------------------------------------
+# Registry
+
+Image.register_open(FitsImageFile.format, FitsImageFile, _accept)
+
+Image.register_extensions(FitsImageFile.format, [".fit", ".fits"])