cppjieba/limonp/logger.hpp

79 lines
2.8 KiB
C++

/************************************
* file enc : utf8
* author : wuyanyi09@gmail.com
************************************/
#ifndef LIMONP_LOGGER_H
#define LIMONP_LOGGER_H
#include <vector>
#include <iostream>
#include <fstream>
#include <string>
#include <stdio.h>
#include <stdarg.h>
#include "io_functs.hpp"
#include "str_functs.hpp"
#define LogDebug(fmt, ...) Logger::LoggingF(LL_DEBUG, __FILE__, __LINE__, fmt, ## __VA_ARGS__)
#define LogInfo(fmt, ...) Logger::LoggingF(LL_INFO, __FILE__, __LINE__, fmt, ## __VA_ARGS__)
#define LogWarn(fmt, ...) Logger::LoggingF(LL_WARN, __FILE__, __LINE__, fmt, ## __VA_ARGS__)
#define LogError(fmt, ...) Logger::LoggingF(LL_ERROR, __FILE__, __LINE__, fmt, ## __VA_ARGS__)
#define LogFatal(fmt, ...) Logger::LoggingF(LL_FATAL, __FILE__, __LINE__, fmt, ## __VA_ARGS__)
namespace Limonp
{
using namespace std;
enum {LL_DEBUG = 0, LL_INFO = 1, LL_WARN = 2, LL_ERROR = 3, LL_FATAL = 4, LEVEL_ARRAY_SIZE = 5, CSTR_BUFFER_SIZE = 1024};
static const char * LOG_LEVEL_ARRAY[LEVEL_ARRAY_SIZE]= {"DEBUG","INFO","WARN","ERROR","FATAL"};
static const char * LOG_FORMAT = "%s %s:%d %s %s\n";
static const char * LOG_TIME_FORMAT = "%Y-%m-%d %H:%M:%S";
class Logger
{
public:
static bool Logging(uint level, const string& msg, const char* fileName, int lineNo)
{
if(level > LL_FATAL)
{
cerr<<"level's value is out of range"<<endl;
return false;
}
char buf[CSTR_BUFFER_SIZE];
time_t timeNow;
time(&timeNow);
size_t ret = strftime(buf, sizeof(buf), LOG_TIME_FORMAT, localtime(&timeNow));
if(0 == ret)
{
fprintf(stderr, "stftime failed.\n");
return false;
}
fprintf(stderr, LOG_FORMAT, buf, fileName, lineNo,LOG_LEVEL_ARRAY[level], msg.c_str());
return true;
}
static bool LoggingF(uint level, const char* fileName, int lineNo, const string& fmt, ...)
{
int size = 256;
string msg;
va_list ap;
while (1) {
msg.resize(size);
va_start(ap, fmt);
int n = vsnprintf((char *)msg.c_str(), size, fmt.c_str(), ap);
va_end(ap);
if (n > -1 && n < size) {
msg.resize(n);
break;
}
if (n > -1)
size = n + 1;
else
size *= 2;
}
return Logging(level, msg, fileName, lineNo);
}
};
}
#endif