glog.cpp

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//
// Copyright (C) 2017 Graeme Walker
// 
// 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 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 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 <http://www.gnu.org/licenses/>.
// ===
//
// glog.cpp
//

#include "gdef.h"
#include "glog.h"
#include "glogoutput.h"

G::Log::Log( Severity severity , const char * file , int line ) :
    m_severity(severity) ,
    m_file(file) ,
    m_line(line)
{
}

G::Log::~Log()
{
    try
    {
        flush() ;
    }
    catch(...)
    {
    }
}

bool G::Log::at( Severity s )
{
    LogOutput * output = G::LogOutput::instance() ;
    return output != nullptr && output->at(s) ;
}

bool G::Log::active()
{
    LogOutput * output = G::LogOutput::instance() ;
    if( output == nullptr )
    {
        return false ;
    }
    else
    {
        // (enable it just to get the original state, then restore it)
        bool a = output->enable(true) ;
        output->enable(a) ;
        return a ;
    }
}

void G::Log::flush()
{
    if( active() )
    {
        G::LogOutput::output( m_severity , m_file , m_line , m_ss.str() ) ;
    }
}

std::ostream & G::Log::operator<<( const char * s )
{
    s = s ? s : "" ;
    return m_ss << s ;
}

std::ostream & G::Log::operator<<( const std::string & s )
{
    return m_ss << s ;
}

/// \file glog.cpp