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.

Solved How to decode ISO-8859-2