Method Decode

protocol/nbt/decoder.go:123–168

Decode will decode the nbt file into v and return the root name of the file

(v any)

// Decode will decode the nbt file into v and return the root name of the file
func (d *Decoder) Decode(v any) (rootName string, err error) {
	val := reflect.ValueOf(v)
	if val.Kind() != reflect.Pointer {
		return "", fmt.Errorf("Decode expects a pointer")
	}
	val = val.Elem()

	typeId, err := d.readByte()
	if err != nil {
		return "", err
	}
	if typeId != Compound {
		return "", fmt.Errorf("expected a compound first element")
	}

	if !d.dontReadRootCompoundName {
		rootName, err = d.readString()
		if err != nil {
			return
		}
	}

	switch val.Kind() {
	case reflect.Struct:
		m := generateMap(val)
		defer func() {
			clear(m)
			valueMap.Put(m)
		}()

		if err := d.decodeCompoundStruct(m); err != nil {
			return "", err
		}
	case reflect.Map:
		if val.IsNil() {
			val.Set(reflect.MakeMap(val.Type()))
		}
		if err := d.decodeCompoundMap(val); err != nil {
			return rootName, err
		}
	default:
		return rootName, fmt.Errorf("Decode expects a pointer of struct/map, not %s", val.Type())
	}

	return
}

func (d *Decoder) decodeCompoundMap(_map reflect.Value) error {
	var typeId [1]byte