Trying to use QregularExpression

leinad

Hi,

I migrated to Qt 6.2.4 and now found that QRegExp has been deprecated and we should now use QRegularExpression.

I have code using QRegExp which worked fine but when I try to replace it with a QRegularExpression it does not return the correct results. In otherwords not all the IPs are returned

I have a QString which contains multiple IPs and I would like to extract all the IPs from the string. Some may repeat and some may not.

This code works fine using QRegExp:

QRegExp rx("(((?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?))");
QStringList initialList ;
    while ((pos = rx.indexIn(msg, pos)) != -1)
    {
        initialList << rx.cap(1); 
        pos += rx.matchedLength();
    }

When I try to do the following using QRegularExpression it does not return all the IP's.

static QRegularExpression ipRX("(((?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?))");
QRegularExpressionMatch match = ipRX.match(msg);
QStringList initialList ;
    if(match.hasMatch())
    {
        initialList << match.capturedTexts();
        initialList.removeDuplicates();
    }

Any ideas what I'm doing wrong?

Thanks.

Chris Kawa

QRegularExpression::match only looks for the first match. capturedTexts() returns the capture groups in that single match.

A code equivalent to the QRegExp one would be something like this:

QRegularExpressionMatchIterator i = ipRX.globalMatch(msg);
while(i.hasNext())
{
    initialList << i.next().captured(1);
}

leinad

Great! Thanks so much.