newrpl/interaction.cpp

#include <QtGui>
#include <QtCore>
#include <QClipboard>


extern "C" {
// DECLARATIONS SPLIT TO AVOID CONFLICT OF TYPES

uint32_t *getrplstackobject(int level,int *size);
char *getdecompiledrplobject(int level,int *strsize);
void pushobject(char *data,int sizebytes);
void pushtext(char *data,int sizebytes);
void removestackobject(int level,int nitems);

}

// COPY OBJECT FROM THE STACK INTO THE HOST CLIPBOARD
void Stack2Clipboard(int level,int dropit)
{

    uint32_t *obj;
    int size;

    obj=getrplstackobject(level,&size);

    if(!obj) return;


    QClipboard *clip = qApp->clipboard();
    QMimeData *data=new QMimeData;
    QByteArray buffer;
    buffer.append((const char *)obj,size*sizeof(int32_t));

    data->setData(QString("application/newrpl-object"),buffer);

    char *text;
    int strsize;

    text=getdecompiledrplobject(level,&strsize);

    if(!text) return;

    QByteArray decomptext((const char *)text,strsize);
    QString utf8string(decomptext);
    data->setText(utf8string);
    data->setHtml(utf8string);
    clip->setMimeData(data,QClipboard::Clipboard);

    if(dropit) removestackobject(level,1);

}

// PUSH THE CLIPBOARD IN THE STACK
void Clipboard2Stack()
{
    QClipboard *clip = qApp->clipboard();
    const QMimeData *data=clip->mimeData();

    if(data->hasFormat(QString("application/newrpl-object"))) {
        QByteArray mydata(data->data(QString("application/newrpl-object")));

        pushobject(mydata.data(),mydata.size());
        return;
    }

    if(data->hasText()) {
        QByteArray mydata(data->text().toUtf8());
        pushtext(mydata.data(),mydata.size());
        return;
    }
}

int SaveRPLObject(QString& filename,int level)
{
    uint32_t *obj;
    int size;

    obj=getrplstackobject(level,&size);

    if(!obj) return 0;


    QFile f(filename);

    if(!f.open(QIODevice::WriteOnly|QIODevice::Truncate)) {
        return 0;
    }

    const char *fileprolog="NRPL";
    f.write(fileprolog,4);
    f.write((const char *)obj,size*4);
    f.close();

    return 1;

}


int LoadRPLObject(QString& filename)
{
    uint32_t *obj;
    int size;

    QFile f(filename);

    if(!f.open(QIODevice::ReadOnly)) {
        return 0;
    }

    size=f.size();
    if(size&3) return 0;
    QByteArray data=f.read(f.size());

    if( (data.at(0)!='N')||(data.at(1)!='R')||(data.at(2)!='P')||(data.at(3)!='L'))
        return 0;

    pushobject(data.data()+4,data.size()-4);

    f.close();

    return 1;

}