dolphin/Source/Core/Common/Misc.cpp

// Copyright 2009 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.

#include <cstddef>
#include <cstring>
#include <errno.h>

#include "Common/CommonFuncs.h"

// Generic function to get last error message.
// Call directly after the command or use the error num.
// This function might change the error code.
std::string GetLastErrorMsg()
{
  const size_t buff_size = 256;
  char err_str[buff_size];

#ifdef _WIN32
  FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, nullptr, GetLastError(),
                 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), err_str, buff_size, nullptr);
#else
  // Thread safe (XSI-compliant)
  if (strerror_r(errno, err_str, buff_size))
    return "";
#endif

  return std::string(err_str);
}