1 files changed, 61 insertions, 0 deletions
diff --git a/mailman/config/helpers.py b/mailman/config/helpers.py
new file mode 100644
index 000000000..306ef21b4
--- /dev/null
+++ b/mailman/config/helpers.py
@@ -0,0 +1,61 @@
+# Copyright (C) 2008 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/>.
+
+"""Configuration helpers."""
+
+__metaclass__ = type
+__all__ = [
+    'as_boolean',
+    'as_log_level',
+    ]
+
+
+import logging
+
+
+
+def as_boolean(value):
+    """Turn a string into a boolean.
+
+    :param value: A string with one of the following values
+        (case-insensitive): true, yes, 1, on, enable, enabled (for True), or
+        false, no, 0, off, disable, disabled (for False).  Everything else is
+        an error.
+    :type value: string
+    :return: True or False.
+    :rtype: boolean
+    """
+    value = value.lower()
+    if value in ('true', 'yes', '1', 'on', 'enabled', 'enable'):
+        return True
+    if value in ('false', 'no', '0', 'off', 'disabled', 'disable'):
+        return False
+    raise ValueError('Invalid boolean value: %s' % value)
+
+
+
+def as_log_level(value):
+    """Turn a string into a log level.
+    
+    :param value: A string with a value (case-insensitive) equal to one of the
+        symbolic logging levels.
+    :type value: string
+    :return: A logging level constant.
+    :rtype: int
+    """
+    value = value.upper()
+    return getattr(logging, value)