#include <QtCore/QCoreApplication>

#include <QFile>
#include <QDataStream>
#include <QDebug>

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    QString fileName("fraktle3.gbr");

    // ------------------------------------------------

    QFile file(fileName);
    file.open(QIODevice::ReadOnly);

    quint32 headerSize;
    quint32 version;
    quint32 width;
    quint32 height;
    quint32 colorDepth;
    quint32 magic;
    quint32 spacing;
    QString brushName;
    char*   data;

    QDataStream in(&file);
    in >> headerSize
       >> version
       >> width
       >> height
       >> colorDepth
       >> magic
       >> spacing;

    file.close();

    if ((magic != 0x47494D50))
    {
        qDebug() << "No GBR file!" << endl;
        file.close();
        exit(1);
    }

    if (version != 2)
    {
        qDebug() << "Unknown GBR version!" << endl;
        file.close();
        exit(1);
    }

    // read the brush name
    unsigned int nameLength = headerSize-28;
    char* brushName_c       = new char[nameLength];
    in.readBytes(brushName_c, nameLength);

    brushName = QString(brushName_c);
    delete brushName_c;

    // debugging

    qDebug() << "headerSize" << headerSize << endl;
    qDebug() << "version"    << version << endl;
    qDebug() << "width"      << width << endl;
    qDebug() << "height"     << height << endl;
    qDebug() << "colorDepth" << colorDepth << endl;
    qDebug() << "spacing"    << spacing << endl;
    qDebug() << "brushName"  << brushName << endl;

    return 0;
}