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2014年3月24日14:38:08
日志文件系统的写日志函数
1、使用VS2008创建一个带预编译头的控制台项目。
2、源文件内容：
#include "stdafx.h" #include #include #include #include #include using namespace std;#define LOG_FILE_MAX_SIZE 10*1024*1024 //#define LOG_FILE_MAX_SIZE 20 #define LOG_DEBUG 0#define LOG_INFO 1#define LOG_ERR 2#define LOG_EMERG 3int g_nLogLevel = LOG_DEBUG;bool protectLogDir(char * strNowDirName,tm * pNowTm){ char strDirName[_MAX_PATH] = {0}; strcpy(strDirName,"CenterTransLog"); bool bSuc1 = false; if(0 == _mkdir(strDirName)) { printf("创建一级目录成功\n"); bSuc1 = true; } else { if(EEXIST == errno) { printf("一级目录存在\n"); bSuc1 = true; } else { printf("创建一级目录失败\n"); bSuc1 = false; } } if(!bSuc1) return false; char strTmp[40]={0}; sprintf(strTmp,"\\%04d%02d",pNowTm->tm_year+1900,pNowTm->tm_mon+1); strcat(strDirName,strTmp); bool bSuc2 = false; if(0 == _mkdir(strDirName)) { printf("创建二级目录成功\n"); bSuc2 = true; } else { if(EEXIST == errno) { printf("二级目录存在\n"); bSuc2 = true; } else { printf("创建二级目录失败\n"); bSuc2 = false; } } strcpy(strNowDirName,strDirName); return bSuc2;}bool getLogFileName(char * strFileName,tm * pNowTm) { char strTmp[40]={0}; sprintf(strTmp,"\\%04d%02d%02d.txt",pNowTm->tm_year+1900,pNowTm->tm_mon+1,pNowTm->tm_mday); strcat(strFileName,strTmp); return true; }bool getLogFile_NewName(char * strNewFileName,char * strOldFileName,tm * pNowTm) { char strTmp[40]={0}; sprintf(strTmp,"_%02d%02d%2d",pNowTm->tm_hour,pNowTm->tm_min,pNowTm->tm_sec); strncpy(strNewFileName,strOldFileName,strlen(strOldFileName)-4); strcat(strNewFileName,strTmp); strcat(strNewFileName,".txt"); return true; } void protectLogFileSize(char * strFileName,tm * pNowTm) { struct stat buf; if(0 != stat(strFileName, &buf)) { printf("获得文件大小失败\n"); return; } if(buf.st_size < LOG_FILE_MAX_SIZE) return; char strNewFileName[_MAX_PATH]={0}; if(!getLogFile_NewName(strNewFileName,strFileName,pNowTm)) { printf("获得新文件名失败\n"); return; } if(0 !=rename(strFileName,strNewFileName)) { printf("重命名文件失败\n"); return; } return; } bool getLocalTime(tm * pNowTm){ tm * pTm; time_t nowTime; nowTime = time(NULL); pTm = localtime(&nowTime); memcpy(pNowTm,pTm,sizeof(tm)); return true;}bool getLocalTimeStr(char * str,tm * pNowTm){ char strTmp[40]={0}; sprintf(strTmp,"%4d-%02d-%02d %02d:%02d:%02d",pNowTm->tm_year+1900, pNowTm->tm_mon+1,pNowTm->tm_mday,pNowTm->tm_hour,pNowTm->tm_min,pNowTm->tm_sec); strcpy(str,strTmp); return true;}bool getLogLevelStr(char * strLogLevel,int nLogLevel){ switch(nLogLevel) { case LOG_DEBUG: strcpy(strLogLevel,"调试"); break; case LOG_INFO: strcpy(strLogLevel,"信息"); break; case LOG_ERR: strcpy(strLogLevel,"错误"); break; case LOG_EMERG: strcpy(strLogLevel,"紧急"); break; default: strcpy(strLogLevel,"未知"); break; } return true;}bool writeLogFile(int nLogLevel,const char * strLog){ if(nLogLevel >ch; return 0; }
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