TraceObject.cpp

/* ****************************************************************************
**
** Projekt       : Class Library
** File          : TraceObject.cpp
** Version       : $Revision: 1.2 $
** Author        : Axel Schmidt
** Copyright     : (C) 2001 by Analytica GmbH
**-----------------------------------------------------------------------------
**
** $Id: TraceObject.cpp,v 1.2 2001/07/13 06:52:15 AxelSchmidt Exp $
**
** $Log: TraceObject.cpp,v $
** Revision 1.2  2001/07/13 06:52:15  AxelSchmidt
** Macros geändert
**
** Revision 1.1  2001/07/12 14:34:51  AxelSchmidt
** first version
**
******************************************************************************/

#include "stdafx.h"
#include "TraceObject.h"
#include <iostream>
#include <cstring>

CTraceObject::CTraceObject()
{
   // Standart Trace-Levels
#ifdef _DEBUG
   m_nTraceLevelsActive = MT_ERROR | MT_INFO | MT_WARNING | MT_DEBUG;
#else
   m_nTraceLevelsActive = MT_ERROR | MT_INFO | MT_WARNING;
#endif
}

CTraceObject::~CTraceObject()
{

}

void CTraceObject::SetTraceLevel( int nTraceLevelMask )
{
   m_nTraceLevelsActive = nTraceLevelMask;
}

bool CTraceObject::GetIsTraceLevelAktivated( CTraceObject::eTraceLevel eLevel ) const
{
   return (m_nTraceLevelsActive & eLevel ) == eLevel;
}

void CTraceObject::AddTrace( const char * lpszMsg, CTraceObject::eTraceLevel eLevel)
{
    
    if ( GetIsTraceLevelAktivated( eLevel ) == true )
    {
      switch (eLevel) 
      {
         case CTraceObject::MT_ERROR:
            std::cerr << "Error: "   << lpszMsg << std::endl;
            break;
         case CTraceObject::MT_INFO:
            std::cout << "Info: "    << lpszMsg << std::endl;
            break;
         case CTraceObject::MT_WARNING:
            std::cout << "Warning: " << lpszMsg << std::endl;
            break;
         case CTraceObject::MT_DEBUG:
            std::cout << "Debug: "   << lpszMsg << std::endl;
            break;
      }
   }
}

void CTraceObject::AddTrace( std::ostrstream & oStream, CTraceObject::eTraceLevel eLevel )
{
   std::string sTraceText;

   oStream << std::ends; // Stelle sicher das das Ende mit '\0' versehen wurde

   sTraceText += oStream.str();
   // Erlaube wieder Zugriffe auf den internen stream buffer
   oStream.freeze(0);
   // Setze den stream buffer wieder auf den Anfang zurück
   oStream.seekp(0, std::ios::beg );

   AddTrace( sTraceText.c_str(), eLevel );
}

std::string CTraceObject::GetLastErrorText( DWORD dwError )
{
   std::string sErrorText("");
   
   LPTSTR lpszTemp = NULL;

    if ( dwError == 0 )
    {
       dwError = GetLastError();
    }
    DWORD dwRet = ::FormatMessage(
                  FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |FORMAT_MESSAGE_ARGUMENT_ARRAY,
                  0,
                  dwError,
                  0,   
                  (LPTSTR)&lpszTemp,
                  0,
                  0
               );

    if ( dwRet > 0 )
    {
       if ( dwRet > 2 ) lpszTemp[ strlen(lpszTemp)-2 ] = 0;
       sErrorText = lpszTemp;
    }

    if( lpszTemp )
    {
       LocalFree( HLOCAL(lpszTemp) );
    }
    return sErrorText;
}

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