File content as of revision 4:de51256455f7:

// The MIT License (MIT)
//
// Copyright (c) 2015 THINGER LTD
// Author: alvarolb@gmail.com (Alvaro Luis Bustamante)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

#ifndef THINGER_DECODER_HPP
#define THINGER_DECODER_HPP

#include "pson.h"
#include "thinger_io.hpp"
#include "thinger_message.hpp"

namespace thinger{

    class thinger_decoder : public protoson::pson_decoder{
    public:
        void decode(thinger_message&  message, size_t size){
            size_t start_read = bytes_read();
            while(size-(bytes_read()-start_read)>0) {
                protoson::pb_wire_type wire_type;
                uint32_t field_number;
                pb_decode_tag(wire_type, field_number);
                switch (wire_type) {
                    case protoson::length_delimited:{
                        uint32_t size = pb_decode_varint32();
                        pb_skip(size);
                    }
                        break;
                    case protoson::varint: {
                        switch (field_number) {
                            case thinger_message::SIGNAL_FLAG:
                                message.set_signal_flag((thinger_message::signal_flag)pb_decode_varint32());
                                break;
                            case thinger_message::STREAM_ID:
                                message.set_stream_id(pb_decode_varint32());
                                break;
                            default:
                                pb_skip_varint();
                                break;
                        }
                        break;
                    }
                    case protoson::pson_type:
                        switch(field_number){
                            case thinger_message::RESOURCE:
                                protoson::pson_decoder::decode(message.get_resources());
                                break;
                            case thinger_message::PSON_PAYLOAD:
                                protoson::pson_decoder::decode(((protoson::pson&) message));
                                break;
                            default:
                                break;
                        }
                        break;
                    case protoson::fixed_32:
                        pb_skip(4);
                        break;
                    case protoson::fixed_64:
                        pb_skip(8);
                        break;
                    default:
                        break;
                }
            }
        }
    };

    class thinger_read_decoder : public thinger_decoder{
    public:
        thinger_read_decoder(thinger_io& io) : io_(io)
        {}

    protected:
        virtual bool read(void* buffer, size_t size){
            io_.read((char*)buffer, size);
            protoson::pson_decoder::read(buffer, size);
            return true;
        }

    private:
        thinger_io& io_;
    };

    class thinger_memory_decoder : public thinger_decoder{

    public:
        thinger_memory_decoder(uint8_t* buffer, size_t size) : buffer_(buffer), size_(size){}

    protected:
        virtual bool read(void* buffer, size_t size){
            if(read_+size<=size_){
                memcpy(buffer, buffer_ + read_, size);
                return protoson::pson_decoder::read(buffer, size);
            }else{
                return false;
            }
        }

    private:
        uint8_t* buffer_;
        size_t size_;

    };

}

#endif