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-rw-r--r--synapse/api/filtering.py41
1 files changed, 41 insertions, 0 deletions
diff --git a/synapse/api/filtering.py b/synapse/api/filtering.py
new file mode 100644
index 0000000000..922c40004c
--- /dev/null
+++ b/synapse/api/filtering.py
@@ -0,0 +1,41 @@
+# -*- coding: utf-8 -*-
+# Copyright 2015 OpenMarket Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+# TODO(paul)
+_filters_for_user = {}
+
+
+class Filtering(object):
+
+    def __init__(self, hs):
+        super(Filtering, self).__init__()
+        self.hs = hs
+
+    def get_user_filter(self, user_localpart, filter_id):
+        filters = _filters_for_user.get(user_localpart, None)
+
+        if not filters or filter_id >= len(filters):
+            raise KeyError()
+
+        return filters[filter_id]
+
+    def add_user_filter(self, user_localpart, definition):
+        filters = _filters_for_user.setdefault(user_localpart, [])
+
+        filter_id = len(filters)
+        filters.append(definition)
+
+        return filter_id