C++日志记录类logging完整

C++日志记录类logging//Copyright(c)2012Ohyonetwork.Allrightsreserved.//2012/01/04//logging.h////#ifndef__INCLUDE_LOGGING_H__#define__INCLUDE_LOGGING_H__#include"str_conv.inl"#include<iostream>#include<sstream>#include<string>#include<cstring>#include<fstream>#ifdef_WIN32# include<windows.h># include<shlobj.h># include<shlwapi.h>#pragmacomment(lib,"shlwapi.lib")#else# include<locale.h># include<string.h>#endif#ifndefBEGIN_NAMESPACE# defineBEGIN_NAMESPACE(x)namespacex{#endif#ifndefEND_NAMESPACE# defineEND_NAMESPACE(x)}#endif#ifndefDISALLOW_COPY_AND_ASSIGN# defineDISALLOW_COPY_AND_ASSIGN(TypeName) \ TypeName(constTypeName&); \ voidoperator=(constTypeName&)#endifBEGIN_NAMESPACE(logging)enumLOG_LEVEL{ LOG_NONE =0, LOG_DEBUG =1 <<0, LOG_INFO =1 <<1, LOG_WARNING =1 <<2, LOG_ERROR =1 <<3, LOG_EXCEPTION =1 <<4, _LOG_ALL_ =0xFFFFFFFF};#ifdefined(_DEBUG)__declspec(selectany)volatileunsignedlongg_dwLogLevel=static_cast<unsignedlong>(_LOG_ALL_);#else// release版本不记录任何信息.__declspec(selectany)volatileunsignedlongg_dwLogLevel=static_cast<unsignedlong>(LOG_NONE);#endifconstchar*constG_pwszLogLevel[]={ "NONE", "DEBUG", "INFO", "WARNING", "ERROR", "EXCEPTION"};#ifndef__FUNCTION_W__# defineWIDEN2(x)L##x# defineWIDEN(x)WIDEN2(x)# define__FUNCTION_W__WIDEN(__FUNCTION__)#endifclasslog{private: DISALLOW_COPY_AND_ASSIGN(log);protected: LOG_LEVEL m_LogLevel; constchar *pfile; std::ostringstreamm_stream;public: explicitlog(LOG_LEVELleval,constchar*pszFile,intiLine) { m_LogLevel=leval; m_stream<<"["; switch(m_LogLevel) { caseLOG_DEBUG: m_stream<<G_pwszLogLevel[1]; break; caseLOG_INFO: m_stream<<G_pwszLogLevel[2]; break; caseLOG_WARNING: m_stream<<G_pwszLogLevel[3]; break; caseLOG_ERROR: m_stream<<G_pwszLogLevel[4]; break; caseLOG_EXCEPTION: m_stream<<G_pwszLogLevel[5]; break; default: m_stream<<G_pwszLogLevel[0]; break; } SYSTEMTIMEst; ::GetLocalTime(&st); charszTime[128]={0}; ::wnsprintfA(szTime,_countof(szTime),"[%04u-%02u-%02u_%02u:%02u:%02u_%03u_%u]", st.wYear,st.wMonth,st.wDay, st.wHour,st.wMinute,st.wSecond,st.wMilliseconds,st.wDayOfWeek); m_stream<<"]"<<szTime<<pszFile<<":"<<iLine<<""; } ~log() { if(m_LogLevel&GetLogLevel()) { m_stream<<std::endl; std::stringstr_newline(m_stream.str()); CheckLogDir(); std::ofstream outfile(GetLogFileName(),std::ios::app); outfile<<str_newline; //std::cout<<wstr_newline; } m_LogLevel=LOG_NONE; } std::ostream&stream(){returnm_stream;}private: staticBOOLCheckLogDir(void) { wchar_t wszLogFile[MAX_PATH]; ::StrCpyNW(wszLogFile,GetLogFileName(),_countof(wszLogFile)); ::PathAppendW(wszLogFile,L"..\\"); if(!::PathFileExistsW(wszLogFile))//判断文件夹是否存在 { ::SHCreateDirectoryExW(NULL,wszLogFile,NULL); //创建多级文件夹 } returnTRUE; }public: staticwchar_t*GetLogFileName(void)#ifdefined(_MSC_VER) { staticwchar_t wszLogFile[MAX_PATH]={0}; if(!wszLogFile[0]) { LPITEMIDLIST lpIdl=NULL; if(S_OK==::SHGetSpecialFolderLocation(NULL,CSIDL_PERSONAL,&lpIdl)&&lpIdl) { ::SHGetPathFromIDListW(lpIdl,wszLogFile); ::PathAppendW(wszLogFile,L"DouXie\\DxGame.log"); } ::CoTaskMemFree(static_cast<void*>(lpIdl)); } returnwszLogFile; }#else // TODO#endif#ifdefined(_MSC_VER) // // 这个类用于保留Lasterror值 // //StoresthecurrentvalueofGetLastErrorintheconstructorandrestores //itinthedestructorbycallingSetLastError. //ThisisusefulsincetheLogMessageclassusesalotofWin32calls //thatwilllosethevalueofGLEandthecodethatcalledthelogfunction //willhavelostthethreaderrorvaluewhenthelogcallreturns. classCSaveLastError{ public: CSaveLastError(){m_dwLastErrorCode=::GetLastError();} ~CSaveLastError(){::SetLastError(m_dwLastErrorCode);} unsignedlongGLE()const{returnm_dwLastErrorCode;} protected: unsignedlongm_dwLastErrorCode; }; CSaveLastErrorm_last_error;#endifpublic: staticunsignedlongSetLogLevel(unsignedlongdwNewLevel) { unsignedlongold=g_dwLogLevel; g_dwLogLevel=dwNewLevel; return(old); } staticunsignedlongGetLogLevel(void) { return(g_dwLogLevel); }};//Thisclassisusedtoexplicitlyignorevaluesintheconditional//loggingmacros.Thisavoidscompilerwarningslike"valuecomputed//isnotused"and"statementhasnoeffect".classVoidifyLog{public: VoidifyLog(){} //Thishastobeanoperatorwithaprecedencelowerthan<<but //higherthan?: voidoperator&(std::ostream&){}};#defineLOG_IS_ON(severity)\ (severity&::logging::g_dwLogLevel)#defineLAZY_STREAM(stream,condition)\ !(condition)?(void)0:::logging::VoidifyLog()&(stream)#defineLOG_STREAM(severity)::logging::log(severity,__FILE__,__LINE__).stream()#ifdef_NO_LOG_# defineLOG(level)LAZY_STREAM(LOG_STREAM(::logging::LOG_##level),(0))# defineLOG_IF(level,condition)LAZY_STREAM(LOG_STREAM(::logging::LOG_##level),(0))#else# defineLOG_IF(level,condition)LAZY_STREAM(LOG_STREAM(::logging::LOG_##level),LOG_IS_ON(::logging::LOG_##level)&&(condition))# defineLOG(level)LAZY_STREAM(LOG_STREAM(::logging::LOG_##level),LOG_IS_ON(::logging::LOG_##level))#endif_inlineBOOLResetLogFile(void){ ::DeleteFileW(::logging::log::GetLogFileName()); SYSTEMTIMEst; ::GetLocalTime(&st); charszTime[128]={0}; ::wnsprintfA(sz