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/* Logger.cpp
Copyright (c) 2022 by Peter van der Meer
Endless Sky 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 3 of the License, or (at your option) any later version.
Endless Sky 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, see <https://www.gnu.org/licenses/>.
*/
#include "Logger.h"
#include <iostream>
#include <mutex>
using namespace std;
namespace {
function<void(const string &message)> logErrorCallback = nullptr;
mutex logErrorMutex;
}
void Logger::SetLogErrorCallback(function<void(const string &message)> callback)
{
logErrorCallback = std::move(callback);
}
void Logger::LogError(const string &message)
{
lock_guard<mutex> lock(logErrorMutex);
// Log by default to stderr.
cerr << message << endl;
// Perform additional logging through callback if any is registered.
if(logErrorCallback)
logErrorCallback(message);
}
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