gistfile1.cpp

boost::filesystem::ifstream ifs;
boost::filesystem::path filepath(path);

ifs.open(filepath/filename);
std::string line;
std::istream is(&ifs);
while(getline(is, line)) {
        msgpack::unpacked msg;
        msgpack::unpack(&msg, line.data(), line.size());

        msgpack::object obj = msg.get();
        msgpack::object_map objmap = obj.via.map;

        msgpack::object_kv* p(objmap.ptr);
        msgpack::object_kv* const pend(objmap.ptr + objmap.size);
        std::string k, v;
        for(; p != pend; ++p) {
                p->key.convert(&k);
                p->val.convert(&v);
                ...
        }
}

gistfile2.java

File file = new File(filename);
BufferedReader reader = new BufferedReader(new FileReader(file);

MessagePack msgpack = new MessagePack();
Template<Map<Value, Value>> mapTmpl = tMap(TValue, TValue);

String line;
while((line = reader.readLine()) != null) {
        InputStream lineInputStream = new ByteArrayInputStream(line.getBytes());
        Unpacker unpacker = msgpack.createUnpacker(lineInputStream);
        Map<Value, Value> objMap = unpacker.read(mapTmpl);
        ...
}