Add general sanitisers

salt/utils/general.py

@@ -0,0 +1,40 @@
+# -*- coding: utf-8 -*-
+#
+# Copyright 2016 SUSE LLC
+#
+# 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.
+
+import re
+import os.path
+from builtins import str as text
+
+from salt.exceptions import CommandExecutionError
+
+
+class InputSanitizer(object):
+    @staticmethod
+    def trim(value):
+        '''
+        Raise an exception if value is empty. Otherwise strip it down.
+        :param value:
+        :return:
+        '''
+        value = (value or '').strip()
+        if not value:
+            raise CommandExecutionError("Empty value during sanitation")
+
+        return text(value)
+
+
+
+clean = InputSanitizer()