I need to do some in-memory manipulation of strings, including compression to gzip format.  I am new to the use of Boost and to the use of gzip.  I found the following snippet on the Internet, compressing a std::string and producing a new std::string as output.  This implies that gzip_compressor never produces a null byte in its output but the gzip_compressor documentation doesn't say that and my search of the underlying library zlib documentation doesn't say anything like that either.  So is this a correct use?

std::string compress(const std::string& data)

{

    namespace bio = boost::iostreams;

std::stringstream compressed;

std::stringstream origin(data);

bio::filtering_streambuf<bio::input> out;

out.push(bio::gzip_compressor(bio::gzip_params(bio::gzip::best_compression)));

out.push(origin);

bio::copy(out, compressed);

    return compressed.str();

}

Thanks,

John Boncek