82 lines
2.0 KiB
C++
82 lines
2.0 KiB
C++
/* Copyright (C) 2006-2016 J.F.Dockes
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*/
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#include "log.h"
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#include <errno.h>
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#include <fstream>
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#include <time.h>
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#ifdef _MSC_VER
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#define localtime_r(A,B) localtime_s(B,A)
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#endif
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using namespace std;
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Logger::Logger(const std::string& fn)
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: m_fn(fn)
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{
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reopen(fn);
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}
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bool Logger::reopen(const std::string& fn)
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{
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#if LOGGER_THREADSAFE
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std::unique_lock<std::recursive_mutex> lock(m_mutex);
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#endif
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if (!fn.empty()) {
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m_fn = fn;
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}
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if (!m_tocerr && m_stream.is_open()) {
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m_stream.close();
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}
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if (!m_fn.empty() && m_fn != "stderr") {
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m_stream.open(m_fn, std::fstream::out | std::ofstream::trunc);
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if (!m_stream.is_open()) {
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cerr << "Logger::Logger: log open failed: for [" <<
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fn << "] errno " << errno << endl;
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m_tocerr = true;
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} else {
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m_tocerr = false;
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}
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} else {
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m_tocerr = true;
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}
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return true;
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}
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const char *Logger::datestring()
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{
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time_t clk = time(0);
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struct tm tmb;
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localtime_r(&clk, &tmb);
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if (strftime(m_datebuf, LOGGER_DATESIZE, m_datefmt.c_str(), &tmb)) {
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return m_datebuf;
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} else {
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return "";
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}
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}
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static Logger *theLog;
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Logger *Logger::getTheLog(const string& fn)
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{
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if (theLog == 0)
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theLog = new Logger(fn);
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return theLog;
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}
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