// Copyright 2021 The Dawn 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 "common/WindowsUtils.h" #include "common/windows_with_undefs.h" #include std::string WCharToUTF8(const wchar_t* input) { // The -1 argument asks WideCharToMultiByte to use the null terminator to know the size of // input. It will return a size that includes the null terminator. int requiredSize = WideCharToMultiByte(CP_UTF8, 0, input, -1, nullptr, 0, nullptr, nullptr); // When we can use C++17 this can be changed to use string.data() instead. std::unique_ptr result = std::make_unique(requiredSize); WideCharToMultiByte(CP_UTF8, 0, input, -1, result.get(), requiredSize, nullptr, nullptr); // This will allocate the returned std::string and then destroy result. return std::string(result.get(), result.get() + (requiredSize - 1)); } std::wstring UTF8ToWStr(const char* input) { // The -1 argument asks MultiByteToWideChar to use the null terminator to know the size of // input. It will return a size that includes the null terminator. int requiredSize = MultiByteToWideChar(CP_UTF8, 0, input, -1, nullptr, 0); // When we can use C++17 this can be changed to use string.data() instead. std::unique_ptr result = std::make_unique(requiredSize); MultiByteToWideChar(CP_UTF8, 0, input, -1, result.get(), requiredSize); // This will allocate the returned std::string and then destroy result. return std::wstring(result.get(), result.get() + (requiredSize - 1)); }