[Boost-users] iostreams zip header

Hi, I'm using the gzip and bzip2 compression for compress data. That works fine, but can I remove the zip header in the output stream? The compressor is pushed into a filtering_streambuf and output stream, but I don't need the the zip header (only the compressed data). Is there any method to remove the zip header or should I write my own code at the gzip / bzip2 specifiation? Thanks Phil