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Log.cpp
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Log.cpp
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/*
* Copyright (C) 2015,2016,2020 by Jonathan Naylor G4KLX
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "Log.h"
#include <sys/time.h>
#include <unistd.h>
#include <cstdio>
#include <cstdlib>
#include <cstdarg>
#include <ctime>
#include <cassert>
#include <cstring>
#include <syslog.h>
bool m_syslog = false;
static unsigned int m_displayLevel = 2U;
static char LEVELS[] = " DMIWEF";
void LogInitialise(unsigned int displayLevel, bool syslog)
{
m_displayLevel = displayLevel;
m_syslog = syslog;
}
void LogFinalise()
{
}
void Log(unsigned int level, const char* fmt, ...)
{
assert(fmt != NULL);
char buffer[501U];
struct timeval now;
::gettimeofday(&now, NULL);
struct tm* tm = ::gmtime(&now.tv_sec);
::sprintf(buffer, "%c: %04d-%02d-%02d %02d:%02d:%02d.000 ", LEVELS[level], tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
va_list vl;
va_start(vl, fmt);
::vsnprintf(buffer + ::strlen(buffer), 500, fmt, vl);
va_end(vl);
if (level >= m_displayLevel && m_displayLevel != 0U) {
if (m_syslog)
syslog(LOG_INFO, "DisplayServer: %s\n", buffer);
::fprintf(stdout, "%s\n", buffer);
::fflush(stdout);
}
if (level == 6U) { // Fatal
exit(1);
}
}