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-rw-r--r--PIL/FitsStubImagePlugin.py73
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diff --git a/PIL/FitsStubImagePlugin.py b/PIL/FitsStubImagePlugin.py
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+#
+# The Python Imaging Library
+# $Id: FitsStubImagePlugin.py 2134 2004-10-06 08:55:20Z fredrik $
+#
+# FITS stub adapter
+#
+# Copyright (c) 1998-2003 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+import Image, ImageFile
+
+_handler = None
+
+##
+# Install application-specific FITS image handler.
+#
+# @param handler Handler object.
+
+def register_handler(handler):
+ global _handler
+ _handler = handler
+
+# --------------------------------------------------------------------
+# Image adapter
+
+def _accept(prefix):
+ return prefix[:6] == "SIMPLE"
+
+class FITSStubImageFile(ImageFile.StubImageFile):
+
+ format = "FITS"
+ format_description = "FITS"
+
+ def _open(self):
+
+ offset = self.fp.tell()
+
+ if not _accept(self.fp.read(6)):
+ raise SyntaxError("Not a FITS file")
+
+ # FIXME: add more sanity checks here; mandatory header items
+ # include SIMPLE, BITPIX, NAXIS, etc.
+
+ self.fp.seek(offset)
+
+ # make something up
+ self.mode = "F"
+ self.size = 1, 1
+
+ loader = self._load()
+ if loader:
+ loader.open(self)
+
+ def _load(self):
+ return _handler
+
+
+def _save(im, fp, filename):
+ if _handler is None or not hasattr("_handler", "save"):
+ raise IOError("FITS save handler not installed")
+ _handler.save(im, fp, filename)
+
+
+# --------------------------------------------------------------------
+# Registry
+
+Image.register_open(FITSStubImageFile.format, FITSStubImageFile, _accept)
+Image.register_save(FITSStubImageFile.format, _save)
+
+Image.register_extension(FITSStubImageFile.format, ".fit")
+Image.register_extension(FITSStubImageFile.format, ".fits")