1 files changed, 54 insertions, 0 deletions
diff --git a/src/mailman/rules/__init__.py b/src/mailman/rules/__init__.py
new file mode 100644
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+++ b/src/mailman/rules/__init__.py
@@ -0,0 +1,54 @@
+# Copyright (C) 2007-2009 by the Free Software Foundation, Inc.
+#
+# This file is part of GNU Mailman.
+#
+# GNU Mailman 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.
+#
+# GNU Mailman 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
+# GNU Mailman.  If not, see <http://www.gnu.org/licenses/>.
+
+"""The built in rule set."""
+
+from __future__ import absolute_import, unicode_literals
+
+__metaclass__ = type
+__all__ = [
+    'initialize',
+    ]
+
+
+import os
+import sys
+
+from mailman.interfaces.rules import IRule
+
+
+
+def initialize():
+    """Initialize the built-in rules.
+
+    Rules are auto-discovered by searching for IRule implementations in all
+    importable modules in this subpackage.
+    """
+    # Find all rules found in all modules inside our package.
+    import mailman.rules
+    here = os.path.dirname(mailman.rules.__file__)
+    for filename in os.listdir(here):
+        basename, extension = os.path.splitext(filename)
+        if extension <> '.py':
+            continue
+        module_name = 'mailman.rules.' + basename
+        __import__(module_name, fromlist='*')
+        module = sys.modules[module_name]
+        for name in module.__all__:
+            rule = getattr(module, name)
+            if IRule.implementedBy(rule):
+                yield rule