Solved How to decode ISO-8859-2

[Mikeeeeee]

Hi!
How to decode ISO-8859-2?
This code does not decode.

QString AppCore::returnNormalText(QString text)
{
    QString text2;
    QByteArray byteArray;
    byteArray = text.toLocal8Bit();

    QTextCodec* defaultTextCodec = QTextCodec::codecForName("ISO-8859-2");
    QTextDecoder *decoder = new QTextDecoder(defaultTextCodec);
    text2 = decoder->toUnicode(byteArray);

    return text2;
}

[hskoglund]

Hi, Edited I think because of byteArray = text.toLocal8Bit();
toLocal8Bit() on Windows is not 100% that is uses "ISO-8859-2" (on my Windows PC it uses "ISO-8859-1")

so instead you could try:

QString text2;

QTextCodec* defaultTextCodec = QTextCodec::codecForName("ISO-8859-2");
QTextDecoder *decoder = new QTextDecoder(defaultTextCodec);

QByteArray byteArray;
byteArray = defaultTextCodec->fromUnicode(text);

text2 = decoder->toUnicode(byteArray);
...

[Mikeeeeee]

It's too not work.
qDebug() return: "text : "?????????? ??????" text2 : "?????????? ??????""
I get the text from QML, maybe it is incorrectly transmitted?

    QString text2;

    QTextCodec* defaultTextCodec = QTextCodec::codecForName("ISO-8859-2");
    QTextDecoder *decoder = new QTextDecoder(defaultTextCodec);

    QByteArray byteArray;
    byteArray = defaultTextCodec->fromUnicode(text);

    text2 = decoder->toUnicode(byteArray);
    qDebug()<<"text : "<<text<<"text2 : "<<text2;
    return text2;

[hskoglund]

Sure, it could be some bad input from QML, I just tried a test of all the "special" characters in ISO-8859-2 (and then text and text2 are the same):

QString text2;

QTextCodec* defaultTextCodec = QTextCodec::codecForName("ISO-8859-2");
QTextDecoder *decoder = new QTextDecoder(defaultTextCodec);

text = "";  // reset text with test value
for (int i = 161; (i < 255); ++i)
    text += decoder->toUnicode(QByteArray(1,char(i)));

QByteArray byteArray;
byteArray = defaultTextCodec->fromUnicode(text);

text2 = decoder->toUnicode(byteArray);
qDebug()<<"text : "<<text<<"text2 : "<<text2;

[hskoglund]

Just realized, if your QML code has some ISO-8859-2 characters it wants translated into Unicode (QString) than it shouldn't pass them to C++ inside a QString (text) because that implies that the translation to Unicode has already taken place
Perhaps you can use a QByteArray, e.g. QString AppCore::returnNormalText(QByteArray text)

[Mikeeeeee]

The trouble is that QML gets the code from the results of the query in XML. Can this text in QML convert to bitarray and convey?

[Mikeeeeee]

Tried to convert the downloaded text from the file to C++, does not work.

AppCore::AppCore()
{
    //QFile file("E:/QTProject/AnexTour/xmlExample.txt");
    QFile file(":/Images/xmlExample.txt"); 
    if (file.open(QIODevice::ReadOnly | QIODevice::Text))
    {
        qDebug()<<"file open";
        testXmlString = returnNormalText(file.readAll());
        qDebug()<<testXmlString;
    }

}



QString AppCore::returnNormalText(QString text)
{
    QString text2;

    QTextCodec* defaultTextCodec = QTextCodec::codecForName("ISO-8859-2");
    QTextDecoder *decoder = new QTextDecoder(defaultTextCodec);

    QByteArray byteArray;
    byteArray = defaultTextCodec->fromUnicode(text);

    text2 = decoder->toUnicode(byteArray);
    qDebug()<<"text : "<<text<<"text2 : "<<text2;
    return text2;

[aha_1980]

@mikeeeeee said in How to decode ISO-8859-2:

Tried to convert the downloaded text from the file to C++, does not work.

Yeah, because you already convert the QByteArray to QString after reading the file (because the parameter text in returnNormalText is QString). Remember: QString is Unicode, QByteArray can be every encoding you like.