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//
//
// Copyright 2015 gRPC authors.
//
// 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.
//
//
#include <grpc/support/port_platform.h>
#ifdef GPR_WINDOWS_ENV
#include <windows.h>
#include <memory>
#include "src/core/lib/gprpp/env.h"
#include "src/core/lib/gprpp/tchar.h"
namespace grpc_core {
y_absl::optional<TString> GetEnv(const char* name) {
auto tname = CharToTchar(name);
DWORD ret = GetEnvironmentVariable(tname.c_str(), NULL, 0);
if (ret == 0) return y_absl::nullopt;
std::unique_ptr<TCHAR[]> tresult(new TCHAR[ret]);
ret =
GetEnvironmentVariable(tname.c_str(), tresult.get(), ret * sizeof(TCHAR));
if (ret == 0) return y_absl::nullopt;
return TcharToChar(tresult.get());
}
void SetEnv(const char* name, const char* value) {
BOOL res = SetEnvironmentVariable(CharToTchar(name).c_str(),
CharToTchar(value).c_str());
if (!res) abort();
}
void UnsetEnv(const char* name) {
BOOL res = SetEnvironmentVariable(CharToTchar(name).c_str(), NULL);
if (!res) abort();
}
} // namespace grpc_core
#endif // GPR_WINDOWS_ENV
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