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author | zhipengh <zhipengh512@gmail.com> | 2015-12-22 15:04:53 +0800 |
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committer | zhipengh <zhipengh512@gmail.com> | 2015-12-22 15:04:53 +0800 |
commit | b678c5bfea0f1b142c2a4a5bdee1e3309a021887 (patch) | |
tree | 493ec289254370057daaaded00fd1b4761783c86 /tosca2heat/heat-translator-0.3.0/translator/osc/utils.py | |
parent | 828f613ea0c3e334eacf3f7857252246708d1c88 (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.py | 45 |
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 new file mode 100644 index 0000000..e8a6814 --- /dev/null +++ b/tosca2heat/heat-translator-0.3.0/translator/osc/utils.py @@ -0,0 +1,45 @@ +# 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) |