You need to use the SerializeToZeroCopyStream interface, since you want to pass in a custom stream. You use GzipOutputStream just like any other ZeroCopyOutputStream, except it needs to wrap the underlying stream implementation. Since you mention writing to a gzip file, you might do something like:
int fd = ...; FileOutputStream file_stream(fd); GZipOutputStream gzip_stream(&file_stream, GzipOutputStream::Options()); msg.SerializeToZeroCopyStream(&gzip_stream); On Mon, Oct 3, 2011 at 3:07 PM, Luke <lkrec...@googlemail.com> wrote: > Dear all, > > after some days of experimenting with Protocol Buffers I tried to > compress the files. > With Python this is quite simple to do and does not require any play > with streams. > > Since most of our code is written in C++ I would like to compress/ > decompress files in the same language. > I've searched for examples utilising GzipOutputStream and > GzipInputStream with Protocol Buffers but could not find a working > example. > As you probably noticed by now I am a beginner at best with streams > and would really appreciate a fully working example as in > http://code.google.com/apis/protocolbuffers/docs/cpptutorial.html > (I have my address_book, how do I save it in a gziped file?) > > Thank you in advance. > > Cheers, > Luke > > -- > You received this message because you are subscribed to the Google Groups > "Protocol Buffers" group. > To post to this group, send email to protobuf@googlegroups.com. > To unsubscribe from this group, send email to > protobuf+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/protobuf?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To post to this group, send email to protobuf@googlegroups.com. To unsubscribe from this group, send email to protobuf+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/protobuf?hl=en.
