include/vrvUtil/DtDebugLog.h

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/******************************************************************************
** Copyright (c) 2007 MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/
/******************************************************************************
** $RCSfile: DtDebugLog.h,v $ $Revision: 1.21 $ $State: Exp $
******************************************************************************/


#pragma once
#include <vrvUtil/vrvUtil.h>
#include <vlutil/vlExceptions.h>
#include <ostream>

class DtOutputStream;

namespace makVrv
{
   #define DT_LOG_WARN  log().out(DtDebugLog::Warning)<<"<Warning:"<<__DtFUNC__<<">"<<std::endl
   #define DT_LOG_INFO  log().out(DtDebugLog::Information)<<"<Info:"<<__DtFUNC__<<">"<<std::endl
   #define DT_LOG_DEBUG log().out(DtDebugLog::Debug)<<"<Debug:"<<__DtFUNC__<<">"<<std::endl
   #define DT_LOG_OUT log().out()
   #define DT_LOG_LEVEL(a) log().levelWillPrint(a)

   class DT_DLL_VRVUTIL DtDebugLog
   {
   public:

      enum PrintLevel
      {
         Warning     = 1,
         Information = 2,
         Debug       = 4,
         PrintLevel_End = 5
      };

      DtDebugLog(DtOutputStream* output);

      virtual ~DtDebugLog();

      inline bool levelWillPrint(DtDebugLog::PrintLevel alevel) 
      { 
         return level() >= alevel;
      }

      virtual void setLevel(DtDebugLog::PrintLevel alevel);

      virtual DtDebugLog::PrintLevel level();

      inline std::ostream& out(DtDebugLog::PrintLevel level = DtDebugLog::Information)
      {
         if(levelWillPrint(level))
            return *myOutput;
         else
            return *myEmptyOutput;
      }

      DtOutputStream* outputStream();

   protected:
      PrintLevel myLevel;
      std::ostream* myOutput;
      int myRef;
      std::ostream* myEmptyOutput;
   };
}