log.cpp

有关于C++网络传输操作的一个DLL开发,希望对学习C++的人有帮助

#include "StdAfx.h"
#include ".\log.h"
#include "time.h"

#define Log LOG::Error


 //int const ERROR=1;

 //int const PACKET=2;

void LOG::GetCurTimeLocal(char *datestr)
{
    SYSTEMTIME tim;

	GetLocalTime(&tim);

	sprintf(datestr,"--%02d/%02d %02d:%02d:%02d:%03d",tim.wMonth ,tim.wDay ,tim.wHour , tim.wMinute ,tim.wSecond,tim.wMilliseconds );
}

FILE * LOG::OpenFileByDate(int const iType)
{
	char cpLogFile[128]={0};

	FILE* fp=NULL;

    time_t i=0;

	tm *tim=NULL;

    time(&i);

    tim=localtime(&i);

	char szFilePath[260] ={0} ;
	std::string sPath; 

	GetModuleFileName(NULL,szFilePath,MAX_PATH); 
	
	int nPos; 

	sPath = szFilePath;
	nPos=sPath.rfind ('\\'); 

	sPath=sPath.substr(0,nPos); 

	if(iType==1)
	{
		sprintf(cpLogFile,"%s\\WLog%4d-%2d-%2d.log",sPath.c_str() ,tim->tm_year+1900,tim->tm_mon+1,tim->tm_mday);
	}
	else
	{
		sprintf(cpLogFile,"%s\\WLog%4d-%2d-%2d.log",sPath.c_str() ,tim->tm_year+1900,tim->tm_mon+1,tim->tm_mday);
	}

	fp=fopen(cpLogFile,"at");
	
	return fp!=NULL?fp:NULL;
}
 void LOG::Error(const char *fmt, ...)
 {
	 FILE *fp=LOG::OpenFileByDate(1);

	char buf[4096]={0};
	
	char szTime[128]={0};

	va_list args;

	va_start(args, fmt);

	GetCurTimeLocal(szTime);

	snprintf(buf, sizeof(buf), "%s|%s\n",szTime, fmt);

	vfprintf(fp, buf, args);

	fflush(fp);

	va_end(args);

	fclose(fp);
 }

void LOG::Packet(const char *fmt,...)
{
	FILE *fp=LOG::OpenFileByDate(2);

	char buf[4096]={0};
	
	char szTime[128]={0};

	va_list args;

	va_start(args, fmt);

	GetCurTimeLocal(szTime);

	snprintf(buf, sizeof(buf), "%s|%s\n",szTime, fmt);

	vfprintf(fp, buf, args);

	fflush(fp);

	va_end(args);

	fclose(fp);
}