Question

I have a legacy library that takes data from hardware and writes it to ostream.
The method looks like following :

int sensors(ostream*) const;

I am not skilled enough in Ancient Ways. How to convert this data to QByteArray? Or, at least, to char array of known size?
I would have solved it myself, but there is an additional problem: the data in ostream seem to be arbitrary length and have several arbitrary '\0' symbols, so you can’t count on it being null-terminated.

Answer 1

I think this is what OrcunC was getting at:

std::stringstream s;
sensors( &s );
QByteArray( s.str().data(), (int) s.str().size() );

… but hopefully more clear :). See also std::stringstream and std::string for information on the classes/member functions used here. By the way, note that I am using str().data(), not str().c_str() — I’m being really careful to handle those \0 characters, and I’m not assuming NULL termination.