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#ifndef AWS_COMMON_ENVIRONMENT_H
#define AWS_COMMON_ENVIRONMENT_H
/**
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0.
*/
#include <aws/common/common.h>
AWS_PUSH_SANE_WARNING_LEVEL
struct aws_string;
/*
* Simple shims to the appropriate platform calls for environment variable manipulation.
*
* Not thread safe to use set/unset unsynced with get. Set/unset only used in unit tests.
*/
AWS_EXTERN_C_BEGIN
/*
* Get the value of an environment variable. If the variable is not set, the output string will be set to NULL.
* Not thread-safe
*/
AWS_COMMON_API
int aws_get_environment_value(
struct aws_allocator *allocator,
const struct aws_string *variable_name,
struct aws_string **value_out);
/*
* Set the value of an environment variable. On Windows, setting a variable to the empty string will actually unset it.
* Not thread-safe
*/
AWS_COMMON_API
int aws_set_environment_value(const struct aws_string *variable_name, const struct aws_string *value);
/*
* Unset an environment variable.
* Not thread-safe
*/
AWS_COMMON_API
int aws_unset_environment_value(const struct aws_string *variable_name);
AWS_EXTERN_C_END
AWS_POP_SANE_WARNING_LEVEL
#endif /* AWS_COMMON_ENVIRONMENT_H */
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