Parsing string

fari35

I have a string <abc>0200</abc><xyz>10101</xyz>. I want to extract the values of these tags like 0200 from abc tag and 10101 from xyz tag. How can I do that in Qt?

jsulm

@fari35 said in Parsing string:

How can I do that in Qt?

Using https://doc.qt.io/qt-5/qregularexpression.html

Christian Ehrlicher

Already answered on so: 'Use a combination of std::string::find and std::string::substr, or their QString equivalents QString::indexOf and QString::mid.'

Ketan__Patel__0011

Here I have Developed logic for you..
you can try it.

    QString Check = "<abc>0200</abc><xyz>10101</xyz>"; /// YOUR STRING
    QVector<QRegExp> rx;
    rx.push_back(QRegExp("<abc>([a-zA-Z0-9 ]+)</abc>"));
    rx.push_back(QRegExp("<xyz>([a-zA-Z0-9 ]+)</xyz>"));

    QStringList list;

    for(int i = 0 ; i < rx.size() ; i++)
    {
        int pos = 0;
        while ((pos = rx.at(i).indexIn(Check, pos)) != -1)
        {
            list << rx.at(i).cap(1);
            pos += rx.at(i).matchedLength();
        }
    }

Here i have used QRegExp Class.
i have add tag names in Expression And extract the data between from it and store the all data in QStringList

You just have to make Expression and add in QVector<QRegex> as i used.

SGaist

@Ketan__Patel__0011 please do not use QRegExp, it was deprecated in Qt 5 and removed in Qt 6. Use QRegularExpression.