msgpack-c.c

#include <msgpack.h>

int main()
{
    msgpack_sbuffer sbuf;
    msgpack_sbuffer_init(&sbuf);

    msgpack_packer pk;
    msgpack_packer_init(&pk, &sbuf, msgpack_sbuffer_write);

    msgpack_pack_array(&pk, 3);
    msgpack_pack_int(&pk, 1);
    msgpack_pack_true(&pk);
    msgpack_pack_raw(&pk, 7);
    msgpack_pack_raw_body(&pk, "example", 7);

    size_t size = sbuf.size;
    char *msg = msgpack_sbuffer_release(&sbuf);

    msgpack_pack_array(&pk, 3);
    msgpack_pack_int(&pk, 1);
    /* put binary into buffer directly */
    msgpack_sbuffer_write(&sbuf, msg, size);
    msgpack_pack_true(&pk);
    
    return 0;
}