QTextStream read a string until tab

Question

I have filenames that have space in them, but are separated by tabs. How can I read them one by one using a QTextStream?

The normal way would split by tabs AND spaces (actually any QChar::isSpace()), which is not what I want here:

QString s = "file 1.txt\tfile 2.txt";
QTextStream st(&s);
st >> s1 >> s2; // <--- This won't work, it'll give me "file" and "1.txt"

Right now I'm using QString::split() instead of QTextStream as a workaround, but I'd rather use a QTextStream.

Answer 1

If you really want to do it in a stream manner, another option is to create a custom TextStream and override >> operator.

#include <QString>
#include <QStringBuilder>
#include <QTextStream>

class MyTextStream : public QTextStream {
public:
  MyTextStream(QString* str) : QTextStream(str) {}

  MyTextStream& operator>>(QString & str) {
    QChar ch;
    while (!atEnd()) {
      QTextStream::operator >>(ch);
      if (ch == '\t') {
        break;
      }
      str = str % ch;
    }
    return *this;
  }
};

int main() {
  QString s1, s2;
  QString s = "file 1.txt\tfile 2.txt";
  MyTextStream st(&s);
  st >> s1 >> s2; // <--- s1 becomes "file 1.txt" and s2 becomes "file 2.txt"
}