## read a string until a '\x00' is encountered (-> null termination of strings in C!)
sub read_complete_string {
	my ($self) = @_;
	my $string = "";

	## return empty string if we're already at the end of the buffer
	if($self->index() >= $self->size()) {
		return $string;
	}

	my $end_of_string = index($self->buffer(), "\x00", $self->index());

	if(!($end_of_string)) {
			## just read the rest of the buffer if there is no termination
			$string =  $self->read_buffer($self->size() - $self->index());
	}
	else {
		$string = $self->read_buffer($end_of_string - $self->index());
		## ignore the nullbyte '\x00'
		$self->skip(1);
	}

	return $string;
}