logger.cpp
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#include "logger.h"
#include <ctime>
#include <sstream>
#include <iomanip>
Logger *Logger::instance = nullptr;
Logger::Logger()
{
}
std::string Logger::getLogLevelString(int level) const
{
switch (level)
{
case LOG_NONE:
return "NONE";
case LOG_INFO:
return "INFO";
case LOG_NOTICE:
return "NOTICE";
case LOG_WARNING:
return "WARNING";
case LOG_ERR:
return "ERROR";
case LOG_DEBUG:
return "DEBUG";
default:
return "UNKNOWN LOG LEVEL";
}
}
Logger *Logger::getInstance()
{
if (instance == nullptr)
instance = new Logger();
return instance;
}
void Logger::logf(int level, const char *str, ...)
{
va_list valist;
va_start(valist, str);
this->logf(level, str, valist);
va_end(valist);
}
void Logger::logf(int level, const char *str, va_list valist)
{
if (level > curLogLevel) // TODO: wrong: bitmap based
return;
std::lock_guard<std::mutex> locker(logMutex);
time_t time = std::time(nullptr);
struct tm tm = *std::localtime(&time);
std::ostringstream oss;
std::string str_(str);
oss << "[" << std::put_time(&tm, "%Y-%m-%d %H:%M:%S") << "] [" << getLogLevelString(level) << "] " << str_;
oss.flush();
const std::string s = oss.str();
const char *logfmtstring = s.c_str();
if (this->file)
{
vfprintf(this->file, logfmtstring, valist);
fprintf(this->file, "\n");
fflush(this->file);
}
else
{
#ifdef TESTING
vfprintf(stderr, logfmtstring, valist); // the stdout interfers with Qt test XML output, so using stderr.
fprintf(stderr, "\n");
fflush(stderr);
#else
vfprintf(stdout, logfmtstring, valist);
fprintf(stdout, "\n");
fflush(stdout);
#endif
}
}