Question

How to get all matches from a string using regex?
I have a string:

".+(.cpp$|.cxx$|.d$|.h$|.hpp$)"   

and I would like to get only the cpp cxx d h and hpp parts.
EDIT:
So basically I would like to construct regex which would match any string of characters starting with dot and ending with $.
I’ve tried the pattern: "\\.[^$+]+" which is supposed to match dot and everything else except $ and plus one or more times but this gets just the first .cpp part and I need all of them

Answer 1

Since you mention Qt in your question, here is how you would do it using QRegExp:

#include <QtCore>
#include <QtDebug>

int main(int argc, char **argv) {
  QCoreApplication app(argc, argv);

  QString target(".+(.cpp$|.cxx$|.d$|.h$|.hpp$)");
  QRegExp pattern("\\.(\\w+)\\$");

  QStringList matches;
  int pos = 0;
  while ((pos = pattern.indexIn(target, pos)) != -1) {
    matches << pattern.cap(1);
    pos += pattern.matchedLength();
  }

  qDebug() << matches;  // "cpp", "cxx", "d", "h", "hpp"
  return app.exec();
}