Method setbuf

fhstream.cpp:114–128

}

std::streambuf*	ofhbuf::setbuf (char* s, std::streamsize n)
{
	if (s == 0 && n == 0) {
		// Switch to unbuffered
		// This won't take effect until the next overflow or sync
		// (We defer it taking effect so that write errors can be properly reported)
		// To cause it to take effect as soon as possible, we artificially reduce the
		// size of the buffer so it has no space left.  This will trigger an overflow
		// on the next put.
		std::streambuf::setp(pbase(), pptr());
		std::streambuf::pbump(pptr() - pbase());
		buffer_size = 1;
	}
	return this;
}