System.cpp

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#include "blocxx/BLOCXX_config.h"
#include "blocxx/System.hpp"
#include <cstring>
#include <cerrno>

#ifdef BLOCXX_WIN32
#include <winsock2.h>
#endif

namespace BLOCXX_NAMESPACE
{
namespace System
{

#ifdef BLOCXX_WIN32

String errorMsg(int errorCode)
{
   LPVOID lpMsgBuf;
   if (!::FormatMessage( 
            FORMAT_MESSAGE_ALLOCATE_BUFFER
               | FORMAT_MESSAGE_FROM_SYSTEM
               | FORMAT_MESSAGE_IGNORE_INSERTS,
            NULL,
            errorCode,
            MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
            (LPTSTR) &lpMsgBuf,
            0,
            NULL))
   {
      return String();
   }

   String rmsg((const char*)lpMsgBuf);

   // Free the buffer.
   ::LocalFree(lpMsgBuf);
   return rmsg;
}

UInt32 lastErrorMsg(const String &a_action, String &a_errorMessage) 
{ 
   DWORD errcode = GetLastError(); 
   a_errorMessage.format("%s%s%ld%s%s", a_action.c_str(), " failed with error ", errcode, " : ", errorMsg(errcode).c_str());

   return errcode;
}

String lastErrorMsg(bool socketError)
{
   DWORD errcode = (socketError) ? WSAGetLastError() : GetLastError();
   return errorMsg(errcode);
}
#else
String errorMsg(int errorCode)
{
   return String(::strerror(errorCode));
}
String lastErrorMsg(bool socketError)
{
   return errorMsg(errno);
}
#endif

}  // End of System namespace
}  // End of BLOCXX_NAMESPACE