1//
2// Copyright 2019 The Abseil Authors.
3//
4// Licensed under the Apache License, Version 2.0 (the "License");
5// you may not use this file except in compliance with the License.
6// You may obtain a copy of the License at
7//
8// https://www.apache.org/licenses/LICENSE-2.0
9//
10// Unless required by applicable law or agreed to in writing, software
11// distributed under the License is distributed on an "AS IS" BASIS,
12// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13// See the License for the specific language governing permissions and
14// limitations under the License.
15//
16
17#ifndef ABSL_BASE_INTERNAL_SCOPED_SET_ENV_H_
18#define ABSL_BASE_INTERNAL_SCOPED_SET_ENV_H_
19
20#include <string>
21
22namespace absl {
23namespace base_internal {
24
25class ScopedSetEnv {
26 public:
27 ScopedSetEnv(const char* var_name, const char* new_value);
28 ~ScopedSetEnv();
29
30 private:
31 std::string var_name_;
32 std::string old_value_;
33
34 // True if the environment variable was initially not set.
35 bool was_unset_;
36};
37
38} // namespace base_internal
39} // namespace absl
40
41#endif // ABSL_BASE_INTERNAL_SCOPED_SET_ENV_H_
42