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57 lines
1.6 KiB
C
Executable File
57 lines
1.6 KiB
C
Executable File
#ifndef AWS_COMMON_ENVIRONMENT_H
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#define AWS_COMMON_ENVIRONMENT_H
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/*
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* Copyright 2010-2019 Amazon.com, Inc. or its affiliates. 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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* A copy of the License is located at
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*
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* http://aws.amazon.com/apache2.0
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*
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* or in the "license" file accompanying this file. This file is distributed
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* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
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* express or implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*/
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#include <aws/common/common.h>
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struct aws_string;
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/*
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* Simple shims to the appropriate platform calls for environment variable manipulation.
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*
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* Not thread safe to use set/unset unsynced with get. Set/unset only used in unit tests.
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*/
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AWS_EXTERN_C_BEGIN
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/*
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* Get the value of an environment variable. If the variable is not set, the output string will be set to NULL.
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* Not thread-safe
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*/
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AWS_COMMON_API
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int aws_get_environment_value(
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struct aws_allocator *allocator,
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const struct aws_string *variable_name,
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struct aws_string **value_out);
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/*
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* Set the value of an environment variable. On Windows, setting a variable to the empty string will actually unset it.
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* Not thread-safe
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*/
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AWS_COMMON_API
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int aws_set_environment_value(const struct aws_string *variable_name, const struct aws_string *value);
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/*
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* Unset an environment variable.
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* Not thread-safe
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*/
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AWS_COMMON_API
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int aws_unset_environment_value(const struct aws_string *variable_name);
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AWS_EXTERN_C_END
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#endif /* AWS_COMMON_ENVIRONMENT_H */
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