C++的一个日志类，和log4cplus很像

filelogs.h

#ifndef H_FILELOGS_H#define H_FILELOGS_H#include "stdlib.h"#include "stdio.h"#include <string.h>#include <time.h>#include <sys/types.h>#include <sys/stat.h>#define  MAX_FILE_LEN   5242880  //5M#define  MAX_PATH_LEN   300#define  RTN_FAIL-1#define  RTN_SUCCESS 0#define WriteLog(Msg)WriteMsgLog(__FILE__,__LINE__,Msg)class CFileLogs  {public:CFileLogs();virtual ~CFileLogs();bool IsOpen();int init(int iLogLevel,const char *pcDebugLogFileName);bool OpenFile(char *);bool OpenNewOutputFile(char *);bool GetLock();int WriteMsgLog(const char *,int,const char *);int WriteOutputMsg(const char *);public:char m_FileName[MAX_PATH_LEN + FILENAME_MAX + 1];int m_LogLevel;private:bool m_lock;FILE *m_file;private:bool CheckFile();void GetTimeStr(char *);};#endif

filelogs.cpp

// filelogs.cpp: implementation of the CFileLogs class.////////////////////////////////////////////////////////////////////////#include "filelogs.h"//////////////////////////////////////////////////////////////////////// Construction/Destruction//////////////////////////////////////////////////////////////////////CFileLogs::CFileLogs(){m_lock = false;m_file = NULL;}CFileLogs::~CFileLogs(){if(m_file != NULL)fclose(m_file);}//////////////////////////////////////////////////////////////////////// public method//////////////////////////////////////////////////////////////////////bool CFileLogs::GetLock(){if(m_lock == true) return false;m_lock = true;return true;}bool CFileLogs::IsOpen(){if(m_file != NULL)return true;else return false;}int CFileLogs::init(int iLogLevel,const char *pcDebugLogFileName){this->m_LogLevel = iLogLevel;//if log level less than 1 , then don't open log fileif (this->m_LogLevel > 0) {if (pcDebugLogFileName == NULL) {return RTN_FAIL;}else {strcpy(this->m_FileName, pcDebugLogFileName);//this->m_DebugLogFileName = strDuplicate(pcDebugLogFileName);}}FILE *logFile=NULL;if (this->m_LogLevel >= 3) {logFile = fopen(this->m_FileName,(char *)"a+");if (logFile == NULL) {printf("Cannot open file %s to write!\n", this->m_FileName);return RTN_FAIL;}fclose(logFile);}return RTN_SUCCESS;}bool CFileLogs::OpenFile(char *filePathAndName){if(filePathAndName == NULL)return false;sprintf(m_FileName, filePathAndName);if((m_file = fopen(m_FileName, "a")) == NULL)return  false;return true;}bool CFileLogs::OpenNewOutputFile(char *filePathAndName){if(filePathAndName == NULL)return false;if( IsOpen() )fclose(m_file);sprintf(m_FileName, filePathAndName);if((m_file = fopen(m_FileName, "a")) == NULL)return false;return true;}int CFileLogs::WriteMsgLog(const char *pcsrcfile,int line,const char *strMsg){char buf[100];CheckFile();if(m_file == NULL)m_file = fopen(m_FileName, "a");if(m_file != NULL && strMsg != NULL) {GetTimeStr(buf);fprintf(m_file, "[%s]line[%d][%s] %s\n",pcsrcfile,line,buf,strMsg);//pcsrcfilefflush( m_file );   } else {return 0;}m_lock = false;return  1;}int CFileLogs::WriteOutputMsg(const char *strMsg){if (m_file == NULL)m_file = fopen(m_FileName, "a");if (m_file != NULL && strMsg != NULL) {fprintf(m_file, "%s\n",strMsg);fflush( m_file );   } else {return 0;}m_lock = false;return 1;}bool CFileLogs::CheckFile(){struct stat statBuf;intnRet;char  strNewName[500];struct tm * pTime;if(m_file == NULL)return false;nRet = fstat(#ifdef LINUXfileno(m_file)#else#ifdef HPUX    fileno(m_file)    #elsem_file->_file#endif#endif    , &statBuf );if( nRet != 0 ) {printf( "CFileLogs:Bad file handle!\n" );return false;} else {if(statBuf.st_size > MAX_FILE_LEN) {pTime = localtime(&statBuf.st_mtime);sprintf( strNewName, "%sY%dM%dD%dH%dM%dS%d", m_FileName, pTime->tm_year + 1900, pTime->tm_mon+1, pTime->tm_mday, pTime->tm_hour, pTime->tm_min, pTime->tm_sec);fclose(m_file);m_file = NULL;rename(m_FileName, strNewName);}}return true;}void CFileLogs::GetTimeStr(char *pStr){time_t ltime;struct tm *pNow,now;time(<ime);#ifdef WIN32pNow = localtime(<ime);#elsepNow = localtime_r(<ime, &now);#endifsprintf(pStr, (char *)"%2d-%02d-%02d %02d:%02d:%02d",pNow->tm_year + 1900, pNow->tm_mon+1, pNow->tm_mday,pNow->tm_hour, pNow->tm_min, pNow->tm_sec);return;}