--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/django/contrib/messages/storage/user_messages.py	Tue May 25 02:43:45 2010 +0200
@@ -0,0 +1,64 @@
+"""
+Storages used to assist in the deprecation of contrib.auth User messages.
+
+"""
+from django.contrib.messages import constants
+from django.contrib.messages.storage.base import BaseStorage, Message
+from django.contrib.auth.models import User
+from django.contrib.messages.storage.fallback import FallbackStorage
+
+
+class UserMessagesStorage(BaseStorage):
+    """
+    Retrieves messages from the User, using the legacy user.message_set API.
+
+    This storage is "read-only" insofar as it can only retrieve and delete
+    messages, not store them.
+    """
+    session_key = '_messages'
+
+    def _get_messages_queryset(self):
+        """
+        Returns the QuerySet containing all user messages (or ``None`` if
+        request.user is not a contrib.auth User).
+        """
+        user = getattr(self.request, 'user', None)
+        if isinstance(user, User):
+            return user._message_set.all()
+
+    def add(self, *args, **kwargs):
+        raise NotImplementedError('This message storage is read-only.')
+
+    def _get(self, *args, **kwargs):
+        """
+        Retrieves a list of messages assigned to the User.  This backend never
+        stores anything, so all_retrieved is assumed to be False.
+        """
+        queryset = self._get_messages_queryset()
+        if queryset is None:
+            # This is a read-only and optional storage, so to ensure other
+            # storages will also be read if used with FallbackStorage an empty
+            # list is returned rather than None.
+            return [], False
+        messages = []
+        for user_message in queryset:
+            messages.append(Message(constants.INFO, user_message.message))
+        return messages, False
+
+    def _store(self, messages, *args, **kwargs):
+        """
+        Removes any messages assigned to the User and returns the list of
+        messages (since no messages are stored in this read-only storage).
+        """
+        queryset = self._get_messages_queryset()
+        if queryset is not None:
+            queryset.delete()
+        return messages
+
+
+class LegacyFallbackStorage(FallbackStorage):
+    """
+    Works like ``FallbackStorage`` but also handles retrieving (and clearing)
+    contrib.auth User messages.
+    """
+    storage_classes = (UserMessagesStorage,) + FallbackStorage.storage_classes