1 files changed, 92 insertions, 0 deletions
diff --git a/plug-ins/pygimp/gimpshelf.py b/plug-ins/pygimp/gimpshelf.py
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+++ b/plug-ins/pygimp/gimpshelf.py
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+#   Gimp-Python - allows the writing of Gimp plugins in Python.
+#   Copyright (C) 1997  James Henstridge <james@daa.com.au>
+#
+#   This program is free software: you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# gimpshelf.py -- a simple module to help gimp modules written in Python
+#                 store persistent data.
+#
+# Copyright (C) 1997, James Henstridge
+#
+# The gimp module provides a basic method for storing information that persists
+# for a whole gimp session, but only allows for the storage of strings.  This
+# is because other Python types usually have pointers to other Python objects,
+# making it difficult to work out what to save.  This module gives an interface
+# to the gimp module's primitive interface, which resembles the shelve module.
+
+# use cPickle and cStringIO if available
+
+try:
+    import cPickle as pickle
+except ImportError:
+    import pickle
+
+try:
+    import cStringIO as StringIO
+except ImportError:
+    import StringIO
+
+import gimp
+
+import copy_reg
+
+def _image_id(obj):
+    return gimp._id2image, (obj.ID,)
+
+def _drawable_id(obj):
+    return gimp._id2drawable, (obj.ID,)
+
+def _display_id(obj):
+    return gimp._id2display, (obj.ID,)
+
+def _vectors_id(obj):
+    return gimp._id2vectors, (int(obj.ID),)
+
+copy_reg.pickle(gimp.Image,      _image_id,    gimp._id2image)
+copy_reg.pickle(gimp.Layer,      _drawable_id, gimp._id2drawable)
+copy_reg.pickle(gimp.GroupLayer, _drawable_id, gimp._id2drawable)
+copy_reg.pickle(gimp.Channel,    _drawable_id, gimp._id2drawable)
+copy_reg.pickle(gimp.Display,    _display_id,  gimp._id2display)
+copy_reg.pickle(gimp.Vectors,    _vectors_id,  gimp._id2vectors)
+
+del copy_reg, _image_id, _drawable_id, _display_id, _vectors_id
+
+class Gimpshelf:
+    def has_key(self, key):
+        try:
+            s = gimp.get_data(key)
+            return 1
+        except gimp.error:
+            return 0
+
+    def __getitem__(self, key):
+        try:
+            s = gimp.get_data(key)
+        except gimp.error:
+            raise KeyError, key
+
+        f = StringIO.StringIO(s)
+        return pickle.Unpickler(f).load()
+
+    def __setitem__(self, key, value):
+        f = StringIO.StringIO()
+        p = pickle.Pickler(f)
+        p.dump(value)
+        gimp.set_data(key, f.getvalue())
+
+    def __delitem__(self, key):
+        gimp.set_data(key, '')
+
+shelf = Gimpshelf()
+del Gimpshelf