MMDVMHost-Private/Log.cpp

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/*
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* Copyright (C) 2015,2016 by Jonathan Naylor G4KLX
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*
* 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 <cstdio>
#include <cstdlib>
#include <cstdarg>
#include <ctime>
#include <cassert>
static std::string m_path;
static std::string m_root;
static FILE* m_fpLog = NULL;
static bool m_display = true;
static unsigned int m_level = 2U;
static struct tm m_tm;
static char LEVELS[] = " DMIWEF";
static bool LogOpen()
{
time_t now;
::time(&now);
struct tm* tm = ::gmtime(&now);
if (tm->tm_mday == m_tm.tm_mday && tm->tm_mon == m_tm.tm_mon && tm->tm_year == m_tm.tm_year) {
if (m_fpLog != NULL)
return true;
} else {
if (m_fpLog != NULL)
::fclose(m_fpLog);
}
char filename[50U];
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#if defined(_WIN32) || defined(_WIN64)
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::sprintf(filename, "%s\\%s-%04d-%02d-%02d.log", m_path.c_str(), m_root.c_str(), tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday);
#else
::sprintf(filename, "%s/%s-%04d-%02d-%02d.log", m_path.c_str(), m_root.c_str(), tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday);
#endif
m_fpLog = ::fopen(filename, "a+t");
m_tm = *tm;
return m_fpLog != NULL;
}
bool LogInitialise(const std::string& path, const std::string& root, bool display)
{
m_path = path;
m_root = root;
m_display = display;
return ::LogOpen();
}
void LogFinalise()
{
if (m_fpLog != NULL)
::fclose(m_fpLog);
}
void LogSetLevel(unsigned int level)
{
m_level = level;
}
void Log(unsigned int level, const char* fmt, ...)
{
assert(level < 7U);
assert(fmt != NULL);
if (level < m_level)
return;
bool ret = ::LogOpen();
if (!ret)
return;
time_t now;
::time(&now);
struct tm* tm = ::gmtime(&now);
::fprintf(m_fpLog, "%c: %04d-%02d-%02d %02d:%02d:%02d ", LEVELS[level], tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
if (m_display)
::fprintf(stdout, "%c: %04d-%02d-%02d %02d:%02d:%02d ", 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);
vfprintf(m_fpLog, fmt, vl);
if (m_display)
vfprintf(stdout, fmt, vl);
va_end(vl);
::fprintf(m_fpLog, "\n");
::fflush(m_fpLog);
if (m_display) {
::fprintf(stdout, "\n");
::fflush(stdout);
}
if (level == 6U) { // Fatal
::fclose(m_fpLog);
exit(1);
}
}