Daniel Schlyder wrote:
Hi,
Hi,
I get the following error when trying to compile a simple test (attached) using vector_sink from the tutorial with MinGW GCC 3.4.2:
I'm sorry it took me so long to look at your test program. There are three problems: The first is that streambufs do not support operator<<. You have to use streams for that. So the first rewrite of your example would look like: #include <boost/iostreams/concepts.hpp> #include <boost/iostreams/stream_facade.hpp> ... int main() { std::vector<char> vec; boost::io::stream_facade<vector_sink> out(vector_sink(vec)); out << 123 << "foo"; std::copy( vec.begin(), vec.end(), std::ostream_iterator<char>(std::cout, "\n")); } The second problem is that the second line is being interpretted as a function declaration. One way to fix this is: int main() { std::vector<char> vec; vector_sink vs(vec); boost::io::stream_facade<vector_sink> out(vs); out << 123 << "foo"; std::copy( vec.begin(), vec.end(), std::ostream_iterator<char>(std::cout, "\n")); } In the version I am about to release, you can also do this, which is more elegant: #include <boost/ref.hpp> int main() { std::vector<char> vec; boost::io::stream_facade<vector_sink> out(boost::ref(vec)); out << 123 << "foo"; std::copy( vec.begin(), vec.end(), std::ostream_iterator<char>(std::cout, "\n")); } The last problem is that you need to flush or close the stream before you can rely on the data having being written to the vector. I hope I've answered your question.
Daniel Schlyder http://bitblaze.com/
Best Regards, Jonathan