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/* Copyright (C) 2006-2016 J.F.Dockes
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#include "log.h"
#include <errno.h>
#include <fstream>
#include <time.h>
#ifdef _MSC_VER
#define localtime_r(A,B) localtime_s(B,A)
#endif
Logger::Logger(const std::string& fn)
: m_fn(fn)
{
reopen(fn);
}
Logger::~Logger()
{
if (!m_tocerr && m_stream.is_open()) {
m_stream.close();
}
}
bool Logger::reopen(const std::string& fn)
{
#if LOGGER_THREADSAFE
std::unique_lock<std::recursive_mutex> lock(m_mutex);
#endif
if (!fn.empty()) {
m_fn = fn;
}
if (!m_tocerr && m_stream.is_open()) {
m_stream.close();
}
if (!m_fn.empty() && m_fn != "stderr") {
m_stream.open(m_fn, std::fstream::out | std::ofstream::trunc);
if (!m_stream.is_open()) {
std::cerr << "Logger::Logger: log open failed: for [" <<
fn << "] errno " << errno << "\n";
m_tocerr = true;
} else {
m_tocerr = false;
}
} else {
m_tocerr = true;
}
return true;
}
const char *Logger::datestring()
{
time_t clk = time(nullptr);
struct tm tmb;
localtime_r(&clk, &tmb);
if (strftime(m_datebuf, LOGGER_DATESIZE, m_datefmt.c_str(), &tmb)) {
return m_datebuf;
} else {
return "";
}
}
static Logger *theLog;
Logger *Logger::getTheLog(const std::string& fn)
{
if (nullptr == theLog)
theLog = new Logger(fn);
return theLog;
}
void Logger::cleanup()
{
delete theLog;
theLog = nullptr;
}
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