c++11格式化打印日志

linux:

#pragma once

#include <chrono>

static std::time_t getTimeStamp()
{
    std::chrono::time_point<std::chrono::system_clock,std::chrono::milliseconds> tp = std::chrono::time_point_cast<std::chrono::milliseconds>(std::chrono::system_clock::now());
    auto tmp=std::chrono::duration_cast<std::chrono::milliseconds>(tp.time_since_epoch());
    std::time_t timestamp = tmp.count();
    return timestamp;
}
static std::tm* gettm(uint64_t timestamp)
{
    uint64_t milli = timestamp;
    milli += (uint64_t)8*60*60*1000;//add to beijing time zone.
    auto mTime = std::chrono::milliseconds(milli);
    auto tp=std::chrono::time_point<std::chrono::system_clock,std::chrono::milliseconds>(mTime);
    auto tt = std::chrono::system_clock::to_time_t(tp);
    std::tm* now = std::gmtime(&tt);
    return now;
}

static std::string getTimeStr()
{
    time_t timep;
    timep = getTimeStamp(); 
    struct tm *info;
    info = gettm(timep); 

    char tmp[27] = {0};
    sprintf(tmp, "%04d-%02d-%02d %02d:%02d:%02d.%06ld", info->tm_year+1900, info->tm_mon+1, info->tm_mday, info->tm_hour, info->tm_min, info->tm_sec, timep%1000000);
    return tmp;
} 



#define DEBUG_FLAG 

#ifdef DEBUG_FLAG
	#define MY_LOGD(format, ...) {printf("%s: D/%s[%s]: ", getTimeStr().c_str(), basename(__FILE__), __func__);printf(format, ##__VA_ARGS__);printf("\n");} 
#else
	#define MY_LOGD(format, ...)
#endif

#define MY_LOGE(format, arg...) {printf("%s: E/%s[%s]: ", getTimeStr().c_str(), basename(__FILE__), __func__);if(strlen(format)>0){printf(format, ##arg);}printf("\n");}

#define FUNCTION_NAME               MY_LOGD(" ");
#define FUNCTION_IN                 MY_LOGD("+")
#define FUNCTION_OUT                MY_LOGD("-")

 

windows:

#pragma once

#include <chrono> 

#ifdef WIN32
#include <ctime>
#include <filesystem>
#endif

static std::time_t getTimeStamp()
{
	std::chrono::time_point<std::chrono::system_clock, std::chrono::milliseconds> tp = std::chrono::time_point_cast<std::chrono::milliseconds>(std::chrono::system_clock::now());
	auto tmp = std::chrono::duration_cast<std::chrono::milliseconds>(tp.time_since_epoch());
	std::time_t timestamp = tmp.count();
	return timestamp;
}
static std::tm* gettm(uint64_t timestamp)
{
	uint64_t milli = timestamp;
	milli += (uint64_t)8 * 60 * 60 * 1000;//add to beijing time zone.
	auto mTime = std::chrono::milliseconds(milli);
	auto tp = std::chrono::time_point<std::chrono::system_clock, std::chrono::milliseconds>(mTime);
	auto tt = std::chrono::system_clock::to_time_t(tp);
	std::tm* now = std::gmtime(&tt);
	return now;
}

static std::string getTimeStr()
{
	time_t timep;
	timep = getTimeStamp();
	struct tm *info;
	info = gettm(timep);

	char tmp[27] = { 0 };
	sprintf_s(tmp, "%04d-%02d-%02d %02d:%02d:%02d.%06ld", info->tm_year + 1900, info->tm_mon + 1, info->tm_mday, info->tm_hour, info->tm_min, info->tm_sec, (long)timep % 1000000);
	return tmp;
}
static void string_replace(std::string &strBig, const std::string &strsrc, const std::string &strdst)
{
	std::string::size_type pos = 0;
	std::string::size_type srclen = strsrc.size();
	std::string::size_type dstlen = strdst.size();

	while ((pos = strBig.find(strsrc, pos)) != std::string::npos)
	{
		strBig.replace(pos, srclen, strdst);
		pos += dstlen;
	}
}
static std::string GetPathOrURLShortName(std::string strFullName)
{
	if (strFullName.empty())
	{
		return "";
	}
	string_replace(strFullName, "/", "\\"); 
	std::string::size_type iPos = strFullName.find_last_of('\\') + 1; 
	return strFullName.substr(iPos, strFullName.length() - iPos);
}
#define DEBUG_FLAG 

#ifdef DEBUG_FLAG
#define MY_LOGD(format, ...) {printf("%s: D/%s[%s]: ", getTimeStr().c_str(), GetPathOrURLShortName(__FILE__).c_str(), __func__);printf(format, ##__VA_ARGS__);printf("\n");} 
#else
#define MY_LOGD(format, ...)
#endif

#define MY_LOGE(format, ...) {printf("%s: E/%s[%s]: ", getTimeStr().c_str(), GetPathOrURLShortName(__FILE__).c_str(), __func__);if(strlen(format)>0){printf(format, ##__VA_ARGS__);}printf("\n");}

#define FUNCTION_NAME               MY_LOGD(" ");
#define FUNCTION_IN                 MY_LOGD("+")
#define FUNCTION_OUT                MY_LOGD("-")

  

save file:

#include <ctime>
#include <iostream>
#include <fstream>
#include <stdio.h>
#include <stdarg.h>
#include <direct.h>
#include <string>
#include <io.h>
#include <stdlib.h> 
#include <sys/timeb.h>
#include <time.h>
#include <fcntl.h>

/******************************
 * 初始化日志
 ******************************/  
static FILE *logFile;
void initLogFile(const char* dir="e:/") {
	time_t seconds = time(NULL);	//获取时间
	struct tm *p;
	p = localtime(&seconds);//获取本地时间
	char filePath[100] = {0};
	sprintf_s(filePath,"%s/log%04d-%02d-%02d_%02d%02d%02d.log",dir,1900+p->tm_year,1+p->tm_mon,p->tm_mday,p->tm_hour,p->tm_min,p->tm_sec);
	logFile = fopen(filePath, "w");
	if ( logFile == NULL )   {
		printf("can not open log file: %s/n", filePath);
	}
}
/******************************
 * 打印日志
 ******************************/  
void log(const char *fmt ...) {  
	if(logFile == NULL) { 
		initLogFile();
	}
	//获取本地时间
	time_t seconds = time(NULL);
	struct tm *p;
	p = localtime(&seconds);
	// 毫秒
	struct timeb tb;
	ftime(&tb); 

	char prefix[100] = {0};
	sprintf_s(prefix, "[%04d-%02d-%02d %02d:%02d:%02d.%03d] >> ",1900+p->tm_year,1+p->tm_mon,p->tm_mday,p->tm_hour,p->tm_min,p->tm_sec, tb.millitm);
	fprintf(logFile, "%s", prefix);

	va_list vp;  
	va_start(vp, fmt);  
	vfprintf(logFile, fmt, vp);  
	//fprintf(logFile, "\n");
	va_end(vp);  
	fflush(logFile);  
}   
/******************************
 * 打印日志(无前缀)
 ******************************/  
void logNoPrefix(const char *fmt ...) {  
	if(logFile == NULL) {
		initLogFile();
	} 
	va_list vp;  
	va_start(vp, fmt);  
	vfprintf(logFile, fmt, vp);   
	va_end(vp);  
	fflush(logFile);  
}