core/debughelper.cpp

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/******************************************************************************
 * This file is part of the Gluon Development Platform
 * Copyright (c) 2009 Dan Leinir Turthra Jensen <admin@leinir.d>
 *
 * 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
 */

// Adapted from code by wysota - http://blog.wysota.eu.org/index.php/2009/11/17/little-debugging-helper/

#include "debughelper.h"
#ifdef DBGHELPER_USES_PRINTF
#include <stdio.h>
#else
#include <QtCore/QtDebug>
#endif

using namespace GluonCore;

int DbgHelper::indent = 0;
int DbgHelper::colorIndex = 0;

static void DbgHelper_output( int color, int indent, const QString& prefix, const QString& funcName )
{
    QString text = QString( 4 * indent, ' ' ) + QString( prefix + funcName );

    if( color >= 0 )
    {
        text.prepend( "\x1b[3" + QString::number( 1 + color ) + 'm' );
        text.append( "\x1b[39m" );
    }

#ifndef DBGHELPER_USES_PRINTF
    qDebug() << text;
#else
    fprintf( stderr, "%s\n", qPrintable( text ) );
#endif
}

DbgHelper::DbgHelper()
{
    noFunctionName = true;

#ifdef NO_COLOR
    myColor = -1;
#else
    myColor = colorIndex;
    colorIndex = ( colorIndex + 1 ) % 7;
#endif
}

DbgHelper::DbgHelper( const QString& t )
{
    noFunctionName = false;
    txt = t;

#ifdef NO_COLOR
    myColor = -1;
#else
    myColor = colorIndex;
    colorIndex = ( colorIndex + 1 ) % 7;
#endif
    DbgHelper_output( myColor, indent, "BEGIN ", txt );

    ++indent;
}

void DbgHelper::addText( const QString& t )
{
    DbgHelper_output( myColor, indent, "", t );
}

DbgHelper::~DbgHelper()
{
    if( !noFunctionName )
    {
        --indent;
        DbgHelper_output( myColor, indent, "END   ", txt );
    }
}

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