[Boost-users] [iostreams] How can I use the Stream Insertion operator (<<) with a filtering_streambuf?

Subject: [Boost-users] [iostreams] How can I use the Stream Insertion operator (<<) with a filtering_streambuf?
From: Stephen Greenfield (StephenG_at_[hidden])
Date: 2013-07-25 20:37:31

Partially asked in another question, but so far unanswered:  Once I create
a
filtering_streambuf that is connected to the zlib_compressor() and the
output file,
how do I then construct an object that can accept data from the Stream
Insertion Operator?


void CompressUsingFilteringStreambuf()
{            
    std::ofstream myFile("hello.z", std::ios_base::out |
std::ios_base::binary);

    boost::iostreams::filtering_streambuf<boost::iostreams::output> out;
    out.push(boost::iostreams::zlib_compressor());
    out.push(myFile);

        // MY QUESTION:  How can I use the "stream insertion" operator
(<<) 
        // to go through the filtering_streambuf
        // and place compressed text into myFile?

        // HOW DO I CREATE someStream?
        someStream << "text I want to be compressed and end up in the
file...";

        myFile.close();
}

I have scoured the documentation and the web looking for the answer -- and
come up empty.

Stephen