C++ log类

来源：互联网发布：子域名共享session php 编辑：程序博客网时间：2024/05/16 18:43
// Log.h#ifndef LOG_H#define LOG_H#include <fstream>#include <string>#include <sstream>#include <ctime>using namespace std;/** * 用于输出log文件的类. */class Log{public:    Log();    ~Log();    bool Open(string strFileName);    void Close();    bool CommonLogInit(string name); //打开默认的log 文件    void Enable();    void Disable();    string GetTimeStr();    template <typename T> void LogOut(const T& value)    {        if (m_bEnabled)        {            m_tOLogFile << value;        }    }    template <typename T> void LogOutLn(const T& value)    {        if (m_bEnabled)        {            m_tOLogFile << value << endl;        }    }    void LogOutLn()    {        if (m_bEnabled)        {            m_tOLogFile << endl;        }    }    template <typename T> Log& operator<<(const T& value)    {        if (m_bEnabled)        {            m_tOLogFile << value;        }        return (*this);    }    Log& operator<<(ostream& (*_Pfn)(ostream&))    {        if (m_bEnabled)        {            (*_Pfn)(m_tOLogFile);        }        return (*this);    }private:    template<typename T> string ValueToStr(T value)    {        ostringstream ost;        ost << value;        return ost.str();    }private:    ofstream m_tOLogFile;    bool m_bEnabled;};#endif//========================//Log.cpp#include "Log.h"Log::Log()    :m_bEnabled(true){}Log::~Log(){}bool Log::Open(string sFileName){    m_tOLogFile.open(sFileName.c_str(), ios_base::out | ios_base::app);    if( !m_tOLogFile )    {        return false;    }    return true;}void Log::Close(){    if(m_tOLogFile.is_open())    {        m_tOLogFile.close();    }}bool Log::CommonLogInit(string name){    time_t tNowTime;    time(&tNowTime);    tm* tLocalTime = localtime(&tNowTime);    //得到日期的字符串    string sDateStr = ValueToStr(tLocalTime->tm_year+1900) + "-" +        ValueToStr(tLocalTime->tm_mon+1) + "-" +        ValueToStr(tLocalTime->tm_mday);    return Open("e:\\log\\log"+ name+sDateStr + ".txt");}void Log::Enable(){    m_bEnabled = true;}void Log::Disable(){    m_bEnabled = false;}//得到当前时间的字符串string Log::GetTimeStr(){    time_t tNowTime;    time(&tNowTime);    tm* tLocalTime = localtime(&tNowTime);    //"2011-07-18 23:03:01 ";    string strFormat = "%Y-%m-%d %H:%M:%S ";    char strDateTime[30] = {'\0'};    strftime(strDateTime, 30, strFormat.c_str(), tLocalTime);    string strRes = strDateTime;    return strRes;}//本Log类,用于一般简单的Log文本文件输出.//test: main.cpp#include "Log.h"int main(){    Log mainLog;    mainLog.CommonLogInit();    mainLog << mainLog.GetTimeStr() << "测试Log类." << endl;}
0 0