Engine.cpp

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/*
 * This file is a part of the Biology project by eons LLC.
 * Biology (aka Develop Biology) is a framework for approaching software
 * development from a natural sciences perspective.
 *
 * Copyright (C) 2021 Séon O'Shannon & eons LLC
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
#include "bio/log/Engine.h"
#include "bio/log/common/Levels.h"
#include "bio/common/macros/Macros.h"
#include "bio/common/macros/OSMacros.h"
#include "bio/physical/common/Types.h"
#include "bio/physical/Time.h"
#include <cstring>
#include <stdarg.h>
#include <ios>
#include <sstream>
#include <cstdio>
 
namespace bio {
namespace log {
 
Engine::Engine()
{
    //Set all filters to only log if level is >= Info
    m_levelFilter.assign(
        FilterPerspective::Instance().GetNumUsedIds(),
        level::Info());
}
 
Engine::~Engine()
{
 
}
 
void Engine::Log(
    Filter filter,
    Level level,
    const char* format,
    va_list args
)
{
    BIO_SANITIZE_AT_SAFETY_LEVEL_2(FilterPass(
        filter,
        level
    ), ,
        return);
 
    char str[BIO_LOG_PRINTF_MAX_LINE_SIZE + 1];
 
    vsnprintf(
        str,
        sizeof(str),
        format,
        args
    );
    va_end(args);
    str[BIO_LOG_PRINTF_MAX_LINE_SIZE] = '\0';
 
    m_logMessage.clear();
    m_logMessage.str(""); //TODO: is seekp good enough? what is faster?
 
    m_logMessage << physical::GetCurrentTimestamp() << " " << FilterPerspective::Instance().GetNameFromId(filter) << " " << LevelPerspective::Instance().GetNameFromId(level) << ": " << str << "\n";
    Output(m_logMessage.str());
}
 
void Engine::Log(
    Filter filter,
    Level level,
    const char* format,
    ...
)
{
    if (FilterPass(
        filter,
        level
    ))
    {
        return; //filter off, don't log
    }
 
    va_list args;
    va_start(args,
        format);
    Log(
        filter,
        level,
        format,
        args
    );
    va_end(args);
}
 
bool Engine::FilterPass(
    Filter filter,
    Level level
) const
{
    return level >= m_levelFilter[filter];
}
 
bool Engine::FilterSet(
    Filter filter,
    Level level
)
{
    m_levelFilter[filter] = level;
    return true; //SUCCESS
}
 
bool Engine::FilterSet(
    Name filter,
    Name level
)
{
    return FilterSet(
        FilterPerspective::Instance().GetIdFromName(filter),
        LevelPerspective::Instance().GetIdFromName(level));
}
 
Level Engine::FilterGet(Filter filter) const
{
    return m_levelFilter[filter];
}
 
} //log namespace
} //bio namespace