engine/savable.cpp

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/******************************************************************************
 * This file is part of the Gluon Development Platform
 * Copyright (c) 2010 Arjen Hiemstra <ahiemstra@heimr.nl>
 * Copyright (C) 2010 Dan Leinir Turthra Jensen <admin@leinir.dk>
 *
 * 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
 */

#include "savable.h"

#include <core/gluonobject.h>
#include <core/debughelper.h>

#include <QtCore/QFile>
#include <QtCore/QTextStream>
#include <QtCore/QDir>
#include <QtCore/QVariant>

using namespace GluonEngine;

bool
Savable::saveToFile( GluonCore::GluonObject* object )
{
    DEBUG_BLOCK
    if( !object )
    {
        DEBUG_TEXT( "Asset was NULL!" );
        return false;
    }

    Savable* savableObject = dynamic_cast<Savable*>( object );
    if( !savableObject )
    {
        DEBUG_TEXT( "Attempted to save an object which does not inherit Savable!" );
        return false;
    }

    if( !savableObject->savableDirty )
    {
        DEBUG_TEXT( "Trying to save an un-dirty object. This is technically possible, but makes little sense. So - let's not and say we did, shall we?" );
        return true;
    }

    // Make sure the filename is populated and is sane
    if( object->property( "file" ).value<QUrl>().isEmpty() )
        object->setProperty( "file", QVariant::fromValue<QUrl>( QUrl( QString( "Scenes/%1.gdl" ).arg( object->fullyQualifiedFileName() ) ) ) );

    // Create appropriate folders
    if( !QDir::current().exists( "Scenes" ) )
        QDir::current().mkdir( "Scenes" );

    // Perform the save
    QFile* savableFile = new QFile( object->property( "file" ).value<QUrl>().toLocalFile() );
    if( !savableFile->open( QIODevice::WriteOnly ) )
    {
        DEBUG_TEXT( QString( "Could not write to file %1" ).arg( object->property( "file" ).value<QUrl>().toString() ) )
        return false;
    }

    QTextStream fileWriter( savableFile );
    fileWriter << savableObject->contentsToGDL();
    savableFile->close();

    delete savableFile;

    // Remember to undirty yourself
    if( savableObject )
        savableObject->savableDirty = false;
    return true;
}

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