[Solved] A brute qtextstram-autodeleter

spode

let us see this snippet:
@
void Seconda::writeNewSection(QString linguaOrigine, QString linguaFinale)
{
linguaOrigine[0] = linguaOrigine[0].toUpper();
linguaFinale[0] = linguaFinale[0].toUpper();
if(linguaFinale.compare("Tedesco") == 0 || linguaFinale.compare("Deutsch") == 0)
{
QString tmp = linguaFinale;
linguaFinale = linguaOrigine;
linguaOrigine = tmp;
}
QString lingue = linguaOrigine + " " + linguaFinale;
QFile f(QDir::currentPath() + "/listaSezioni.txt");
if(f.open(QIODevice::Append | QIODevice::Text | QIODevice::ReadWrite))
{
QTextStream stream (&f);
if(stream.readAll().contains(lingue))
{
f.close();
emit signal_return();
}
else
{
qDebug()<<"nuovo testo: "<< lingue;
stream.seek(0);
stream << lingue << '\n';
f.close();
terza *t = new terza(linguaOrigine, linguaFinale);
t->show();
this->close();
}
}
}
@

there is a problem. here we go! as the file is opened, the datas that occour to me are deleted. please, prove it and say me what is borrough. as for me it is a perfect code!

goetz

Sorry, I don't understand what's your problem. Can you rephrase it, please: What do you expect in your file, what do you get?

spode

stream.readAll(); returns "", although the file contains a lot of strings.

goetz

Ah, of course. You open the file using mode QIODevice::Append - that will position the file "cursor" at the end, and of course there's nothing left to read ;-)

spode

xD i am a "distrattone" (italian). i thank you a lot!! =)

EDIT:
@
void cinque::writeNewWord(QString l1, QString l2, QString genere, QString wort, QString beispiel, QString parola, QString esempio)
{
if(wort.isEmpty() && beispiel.isEmpty() && parola.isEmpty() && esempio.isEmpty())
{
Prima *d = new Prima();
d->show();
this->close();
}
else
{
if(l1.compare("Deutsch") != 0 || l1.compare("Tedesco") != 0) genere = "";
wort[0] = wort[0].toUpper();

    QFile f(QDir::currentPath() + "listaSezioni.txt");
    //aggiunta del nuovo biglietto al file listaSezioni.txt
    if(f.open(QIODevice::Text | QIODevice::ReadOnly))
    {
        QTextStream streami(&f);
        streami.seek(0);
        QString separatore = " | ";
        QStringList listaSezioni;
        QString riga;
        do {
            riga = streami.readLine();
            qDebug() << "riga: " << riga;
            if(riga.contains(l1) && riga.contains(l2))
            {
                listaSezioni.append(riga);
                listaSezioni.append(genere + separatore + wort + separatore + beispiel + separatore + parola + separatore + esempio + '\n');
            }
            else listaSezioni.append(riga);
        }while(!streami.atEnd());
        f.close();

@

ahm, 'xcuse me, what about here? riga = streami.readLine(); qDebug() << "riga: " << riga;
output: "riga: "" "

goetz

Hard to say without knowing the actual contents of the file :)

spode

goetz

The code works for me.

spode

here we go, dear Volker!!
@
QFile f(QDir::currentPath() + "listaSezioni.txt");
@
should be
@
QFile f(QDir::currentPath() + "/listaSezioni.txt");
@

"/" is the issue!! =)

goetz

Ah, that little typos - they are know to steal you a whole day of debugging - welcome to the club :-)