CODEWITHSUNDEEP
qtqstring
Zaiborg
Zaiborg

Reputation: 2522

Count QString arguments

Do you know how to get the count of possible arguments in a QString?

I want to do something like:

int argumentCount = countArguments(QString("This is the %1 argument, this is the %2 one")`);

where the result should be argumentCount == 2.

Upvotes: 1

Views: 805

Answers (1)

s4eed
s4eed

Reputation: 7891

You can use regular expressions and QString::count function: 

QString str1("%1%2 test test %3 %4 %555");
int n = str1.count(QRegExp("%\\d+"));//n == 5

Update: Because QString's arg numbers can be in 1-99 range this reg-exp can be used: 

QString str1("%1%2 test test %3 %4 %555");
int n = str1.count(QRegExp("%\\d{1,2}(?!\\d)"));//n == 4

Upvotes: 5

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