qt data piping example

read-format-write.cpp

#include <QObject>

class Receiver : public QObject {
  Q_OBJECT
  // ...
  signals:
  void bytesReceived(QByteArray b);
  // ...
}

class Parser : public QObject {
  Q_OBJECT
  // ..
  slots:
  void receiveBytes(QByteArray b);
  signals:
  void stringParsed(QString);
  void numberParsed(int);
}

class Printer: public QObject {
  Q_OBJECT
  // ...
  slots:
  void printString(QString s);
  void printNumber(int n);
}

int main() {
  QCoreApplication app;
  Receiver receiver(...);
  Parser parser(...);
  Printer printer(...);
  
  // Receiver ---> Parser
  connect(receiver, Receiver::bytesReceived, parser, Parser::receiveBytes);
  
  // Parser ---> Printer
  connect(parser, Parser::stringParsed, printer, Printer::printString);
  connect(parser, Parser::numberParsed, printer, Printer::printNumber);
  
  app.exec();
}