对轻量级C++日志类[转]

//log.h

//hujinshan@2004.1.3 Airforce Engineering University

/*

//CLog* CLog::_instance = NULL;

 

CLog::GetObj().Write( "******* 初始化完成 *******" );

CLog::GetObj().tmWrite( "******* 开始渲染No1. *******" );

CLog::GetObj();

 

 在Clog文件中有 #define CLog /##/ 的语句，

 这是为了使日志在release版无效，

 使用单行注释，所以如果调用时如果要换行，

 请务必在换行最后加上 / 符号,

 

*/

 

/*#ifndef _DEBUG

#define CLog /##/

#define _CLOG_H

#endif*/

 

#ifndef _CLOG_H

#define _CLOG_H

 

#include <fstream>

#include <ctime>

 

classCLog

{

         CLog()

         {      

                   pf= newofstream ("inmstrace.log", ios::app);

         }

 

         static CLog* _instance;

         ofstream* pf;

public:

         ~CLog()

         {

                  _instance=0;                  

                  pf->close();

         }

 

         static CLog* GetPtr()

         {

                  if(!_instance)

                            _instance=newCLog;

                  return(_instance);

         }

 

         static CLog& GetObj()

         {

                  if(!_instance)

                            _instance=newCLog;

                  return(*_instance);

         }

 

         template<classT> inline CLog& Write(Tval)

         {

                   (*pf) << val ;

                  pf->flush();

                   return *this;

         }

        

         template<classT> inline CLog& tmWrite(Tval)

         {

        charstrBuf[50];       

        time_tltime;

        time( &ltime );

        struct tm *today = localtime( &ltime );

        sprintf(strBuf, "%4d-%2.2d-%2.2d %2.2d:%2.2d:%2.2d ",

            today->tm_year+1900, today->tm_mon+1, today->tm_mday, today->tm_hour,

            today->tm_min, today->tm_sec);

       

                   (*pf) << strBuf << val << "/r/n";

                  pf->flush();

                   return *this;

         }

 

         template<classT> inline CLog& operator<< (Tval)

         {

                   (*pf) << val ;

                  pf->flush();

                   return *this;

         }

 

};

 

#endif