2 * Copyright 2016 Facebook, Inc.
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #include <folly/portability/Environment.h>
24 int setenv(const char* name, const char* value, int overwrite) {
25 if (overwrite == 0 && getenv(name) != nullptr) {
29 // _putenv_s deletes entries if the value is an empty string,
30 // so we have to call the windows API function to safely assign
32 if (SetEnvironmentVariableA(name, value) != 0) {
39 int unsetenv(const char* name) {
40 if (_putenv_s(name, "") != 0) {