mirror of
https://github.com/klzgrad/naiveproxy.git
synced 2024-11-24 22:36:09 +03:00
51 lines
1.6 KiB
C++
51 lines
1.6 KiB
C++
// Copyright 2017 The Chromium Authors
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
#include "base/scoped_environment_variable_override.h"
|
|
|
|
#include "base/environment.h"
|
|
|
|
namespace base {
|
|
|
|
ScopedEnvironmentVariableOverride::ScopedEnvironmentVariableOverride(
|
|
const std::string& variable_name,
|
|
const std::string& value,
|
|
bool unset_var)
|
|
: environment_(Environment::Create()),
|
|
variable_name_(variable_name),
|
|
overridden_(false),
|
|
was_set_(false) {
|
|
was_set_ = environment_->GetVar(variable_name, &old_value_);
|
|
if (unset_var)
|
|
overridden_ = environment_->UnSetVar(variable_name);
|
|
else
|
|
overridden_ = environment_->SetVar(variable_name, value);
|
|
}
|
|
|
|
ScopedEnvironmentVariableOverride::ScopedEnvironmentVariableOverride(
|
|
const std::string& variable_name,
|
|
const std::string& value)
|
|
: ScopedEnvironmentVariableOverride(variable_name, value, false) {}
|
|
|
|
ScopedEnvironmentVariableOverride::ScopedEnvironmentVariableOverride(
|
|
const std::string& variable_name)
|
|
: ScopedEnvironmentVariableOverride(variable_name, "", true) {}
|
|
|
|
ScopedEnvironmentVariableOverride::ScopedEnvironmentVariableOverride(
|
|
ScopedEnvironmentVariableOverride&&) = default;
|
|
|
|
ScopedEnvironmentVariableOverride& ScopedEnvironmentVariableOverride::operator=(
|
|
ScopedEnvironmentVariableOverride&&) = default;
|
|
|
|
ScopedEnvironmentVariableOverride::~ScopedEnvironmentVariableOverride() {
|
|
if (environment_ && overridden_) {
|
|
if (was_set_)
|
|
environment_->SetVar(variable_name_, old_value_);
|
|
else
|
|
environment_->UnSetVar(variable_name_);
|
|
}
|
|
}
|
|
|
|
} // namespace base
|