cbor-cpp

CBOR C++ serialization library

Just a simple SAX-like Concise Binary Object Representation (CBOR).

http://tools.ietf.org/html/rfc7049

Examples

cbor::OutputDynamic output;

{ //encoding
    cbor::Encoder encoder(output);
    // [123, "bar", 321, 321, "foo", true, false, null, undefined, [123], [], {"age": 18, "hello": "world"}, b"abcde"]
    encoder.write_array(13);
    {
        encoder.write_int(123);
        encoder.write_string("bar");
        encoder.write_int(321);
        encoder.write_int(321);
        encoder.write_string("foo");
        encoder.write_bool(true);
        encoder.write_bool(false);
        encoder.write_null();
        encoder.write_undefined();
        
        encoder.write_array(1);
        {
            encoder.write_int(123);
        }
        encoder.write_array(0);
        encoder.write_map(2);
        {
            encoder.write_string("age");
            encoder.write_int(18);
            encoder.write_string("hello");
            encoder.write_string("world");
        }
        encoder.write_bytes((const uint8_t*)"abcde", 5);
    }
}

{ // decoding
    cbor::Input input(output.data(), output.size());
    cbor::Decoder decoder(input);
    auto result = decoder.run();
    assert(result->object_type() == cbor::ObjectType::Array & result->array_or_map_size == 13);
    auto const& array_value = result->as<cbor::ObjectType::Array>();
    auto obj1 = array_value[0]->as_int();
    auto obj2 = array_value[1]->as_string();
    auto obj3 = array_value[2]->as_int();
    auto obj4 = array_value[3]->as_int();
    auto obj5 = array_value[4]->as_string();
    auto obj6 = array_value[5]->as_bool();
    auto obj7 = array_value[6]->as_bool();
    auto obj8 = array_value[7]->is_null();
    auto obj9 = array_value[8]->is_undefined();
    auto obj10 = array_value[9]->as_array();
    auto obj11 = array_value[10]->as_array();
    auto obj12 = array_value[11]->as_map();
    auto obj13 = array_value[12]->as_bytes();
    assert(obj1 == 123);
    assert(obj2 == "bar");
    assert(obj3 == 321 && obj4 == 321);
    assert(obj5 == "foo");
    assert(obj6 == true && obj7 == false);
    assert(obj8 && obj9);
    assert(obj10.size() == 1 && obj10[0]->as_int() == 123);
    assert(obj11.empty());
    assert(obj12.size() == 2 && obj12["hello"]->as_string() == "world" && obj12["age"]->as_int() == 18);
    assert(obj13.size() == 5 && std::memcmp(obj13.data(), "abcde", 5) == 0);
    
    cbor::OutputDynamic output2;
    cbor::Encoder encoder2(output2);
    encoder2.write_object(result);
}