How to compress a buffer with zlib?

Question

There is a usage example at the zlib website: http://www.zlib.net/zlib_how.html

However in the example they are compressing a file. I would like to compress a binary

Answer 1

This is not a direct answer on your question about the zlib API, but you may be interested in boost::iostreams library paired with zlib.

This allows to use zlib-driven packing algorithms using the basic "stream" operations notation and then your data could be easily compressed by opening some memory stream and doing the << data operation on it.

In case of boost::iostreams this would automatically invoke the corresponding packing filter for every data that passes through the stream.