70 lines
1.8 KiB
Python
70 lines
1.8 KiB
Python
# -*- coding: utf-8 -*- #
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# Copyright 2017 Google LLC. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Utilities for resource args."""
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from __future__ import absolute_import
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from __future__ import division
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from __future__ import unicode_literals
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PREFIX = '--'
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def StripPrefix(arg_name):
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if arg_name.startswith(PREFIX):
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return arg_name[len(PREFIX):]
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return arg_name
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def KebabCase(arg_name):
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return arg_name.replace('_', '-')
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def SnakeCase(arg_name):
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return arg_name.replace('-', '_')
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def IsPositional(arg_name):
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"""Confirms if an arg name is for a positional or a flag."""
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return not arg_name.startswith(PREFIX)
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def NormalizeFormat(arg_name):
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"""Converts arg name to lower snake case, no '--' prefix."""
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return SnakeCase(StripPrefix(arg_name)).lower()
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def NamespaceFormat(arg_name):
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if IsPositional(arg_name):
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return arg_name
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return NormalizeFormat(arg_name)
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def FlagNameFormat(arg_name):
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"""Format a string as a flag name."""
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return PREFIX + KebabCase(StripPrefix(arg_name)).lower()
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def MetavarFormat(arg_name):
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"""Gets arg name in upper snake case."""
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return SnakeCase(arg_name.lstrip('-')).upper()
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def PositionalFormat(arg_name):
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"""Format a string as a positional."""
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return SnakeCase(StripPrefix(arg_name)).upper()
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