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authorzhipengh <zhipengh512@gmail.com>2015-12-22 15:04:53 +0800
committerzhipengh <zhipengh512@gmail.com>2015-12-22 15:04:53 +0800
commitb678c5bfea0f1b142c2a4a5bdee1e3309a021887 (patch)
tree493ec289254370057daaaded00fd1b4761783c86 /tosca2heat/heat-translator-0.3.0/translator/osc/utils.py
parent828f613ea0c3e334eacf3f7857252246708d1c88 (diff)
JIRA:PARSER-15 Provide Standalone Heat-Translator Liberty Pypi Packages
Diffstat (limited to 'tosca2heat/heat-translator-0.3.0/translator/osc/utils.py')
-rw-r--r--tosca2heat/heat-translator-0.3.0/translator/osc/utils.py45
1 files changed, 45 insertions, 0 deletions
diff --git a/tosca2heat/heat-translator-0.3.0/translator/osc/utils.py b/tosca2heat/heat-translator-0.3.0/translator/osc/utils.py
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+++ b/tosca2heat/heat-translator-0.3.0/translator/osc/utils.py
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+# 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.
+#
+
+"""Common client utilities"""
+
+import argparse
+import os
+
+
+def env(*vars, **kwargs):
+ """Search for the first defined of possibly many env vars
+
+ Returns the first environment variable defined in vars, or
+ returns the default defined in kwargs.
+ """
+ for v in vars:
+ value = os.environ.get(v, None)
+ if value:
+ return value
+ return kwargs.get('default', '')
+
+
+class KeyValueAction(argparse.Action):
+ """A custom action to parse arguments as key=value pairs. """
+
+ def __call__(self, parser, namespace, values, option_string=None):
+ # Make sure we have an empty dict rather than None
+ if getattr(namespace, self.dest, None) is None:
+ setattr(namespace, self.dest, {})
+
+ # Add value if an assignment else remove it
+ if '=' in values:
+ getattr(namespace, self.dest, {}).update([values.split('=', 1)])
+ else:
+ getattr(namespace, self.dest, {}).pop(values, None)