wchar_util.cc

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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
#include "flutter/shell/platform/windows/wchar_util.h"
 
#include <dwmapi.h>
 
namespace flutter {
 
std::string WCharBufferToString(const wchar_t* wstr) {
  if (!wstr) {
    return "";
  }
 
  int buffer_size = WideCharToMultiByte(CP_UTF8,  //
                                        0,        //
                                        wstr,     //
                                        -1,       //
                                        nullptr,  //
                                        0,        //
                                        nullptr,  //
                                        nullptr   //
  );
  if (buffer_size <= 0) {
    return "";
  }
 
  std::string result(buffer_size - 1, 0);
  WideCharToMultiByte(CP_UTF8,        //
                      0,              //
                      wstr,           //
                      -1,             //
                      result.data(),  //
                      buffer_size,    //
                      nullptr,        //
                      nullptr         //
  );
  return result;
}
 
}  // namespace flutter