1 /** 2 * Copyright (c) 2021-2022 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #include "os/error.h" 17 18 namespace panda::os { 19 ToString() const20std::string Error::ToString() const 21 { 22 constexpr size_t BUFSIZE = 256; 23 24 if (std::holds_alternative<std::string>(err_)) { 25 return std::get<std::string>(err_); 26 } 27 28 int err = std::get<int>(err_); 29 30 char res[BUFSIZE]; 31 32 strerror_s(res, BUFSIZE, err); 33 34 return std::string(res); 35 } 36 37 } // namespace panda::os 38