[Interest] QRegularExpression for replace

[Elvis Stansvik]

Den tors 1 dec. 2022 kl 20:44 skrev Scott Bloom <scott at towel42.com>:
>
> Im looking for a way using QRE to do something like the following
>
>
>
> auto regEx = QRegularExpression( “(?<name>.*)” );
>
> if ( regEx.match( string ) )
>
>                 auto newString = regEx.replace( string, “${name}” );

It's a bit hard to know exactly what you want given the example above,
since the .* would match the entire input string.

But like Tony said, you can make references to the capturing groups in
the replacement string, so e.g.

#include <QString>
#include <QRegularExpression>
#include <QtDebug>

int main(void) {
   QString s = "Hello Jane and Joe";
   qDebug() << s.replace(QRegularExpression("(Jane|Joe)"), "little \\1");
   return 0;
}

will print

"Hello little Jane and little Joe"

I don't think you can reference capturing groups by name, but that's
just a minor inconvenience.

Elvis

>
>
>
>
>
> Using the standard set of regex subsitutions
>
>
>
> Is this something anyone is looking at? Or is there a solution outthere?
>
> Scott
>
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