func newAttributeListFromC(C_attrs *C.struct_hyperclient_attribute, C_attrs_sz C.size_t) (attrs Attributes, err error) {
attrs = Attributes{}
for i := 0; i < int(C_attrs_sz); i++ {
C_attr := C.GetAttribute(C_attrs, C.int(i))
attr := C.GoString(C_attr.attr)
switch C_attr.datatype {
case datatype_STRING:
attrs[attr] = C.GoStringN(C_attr.value, C.int(C_attr.value_sz))
case datatype_INT64:
var value int64
buf := bytes.NewBuffer(C.GoBytes(unsafe.Pointer(C_attr.value), C.int(C_attr.value_sz)))
err := binary.Read(buf, binary.LittleEndian, &value)
if err != nil {
return nil, fmt.Errorf("Could not decode INT64 attribute `%s` (#%d)", attr, i)
}
attrs[attr] = value
case datatype_GARBAGE:
continue
default:
return nil, fmt.Errorf("Unknown datatype %d found for attribute `%s` (#%d)", C_attr.datatype, attr, i)
}
}
return attrs, nil
}
func (client *Client) newAttributeListFromC(C_attrs *C.struct_hyperdex_client_attribute, C_attrs_sz C.size_t) (attrs Attributes, err error) {
attrs = Attributes{}
for i := 0; i < int(C_attrs_sz); i++ {
C_attr := C.GetAttribute(C_attrs, C.int(i))
if C_attr.value_sz == 0 {
// If value_sz is 0, the attribute has not been set.
// So we skip it.
continue
}
attr := C.GoString(C_attr.attr)
var C_iter C.struct_hyperdex_ds_iterator
switch C_attr.datatype {
case C.HYPERDATATYPE_STRING:
attrs[attr] = C.GoStringN(C_attr.value, C.int(C_attr.value_sz))
case C.HYPERDATATYPE_INT64:
var C_int C.int64_t
status := C.hyperdex_ds_unpack_int(C_attr.value, C_attr.value_sz, &C_int)
if status == -1 {
return nil, fmt.Errorf("The size of int is not exactly 8B")
}
attrs[attr] = int64(C_int)
case C.HYPERDATATYPE_FLOAT:
var C_double C.double
status := C.hyperdex_ds_unpack_float(C_attr.value, C_attr.value_sz, &C_double)
if status == -1 {
return nil, fmt.Errorf("The size of float is not exactly 8B")
}
attrs[attr] = float64(C_double)
case C.HYPERDATATYPE_LIST_STRING:
C.hyperdex_ds_iterator_init(&C_iter, C.HYPERDATATYPE_LIST_STRING,
C_attr.value, C_attr.value_sz)
lst := make(ListStr, 0)
for {
var C_string *C.char
var C_size_t C.size_t
status := C.hyperdex_ds_iterate_list_string_next(&C_iter,
&C_string, &C_size_t)
if status > 0 {
lst = append(lst, C.GoStringN(C_string, C.int(C_size_t)))
} else if status < 0 {
return nil, fmt.Errorf("Corrupted list of strings")
} else {
break
}
}
attrs[attr] = lst
case C.HYPERDATATYPE_LIST_INT64:
C.hyperdex_ds_iterator_init(&C_iter, C.HYPERDATATYPE_LIST_INT64,
C_attr.value, C_attr.value_sz)
lst := make(ListI64, 0)
for {
var num C.int64_t
status := C.hyperdex_ds_iterate_list_int_next(&C_iter, &num)
if status > 0 {
lst = append(lst, int64(num))
} else if status < 0 {
return nil, fmt.Errorf("Corrupted list of integers")
} else {
break
}
}
attrs[attr] = lst
case C.HYPERDATATYPE_LIST_FLOAT:
C.hyperdex_ds_iterator_init(&C_iter, C.HYPERDATATYPE_LIST_FLOAT,
C_attr.value, C_attr.value_sz)
lst := make(ListF64, 0)
for {
var num C.double
status := C.hyperdex_ds_iterate_list_float_next(&C_iter, &num)
if status > 0 {
lst = append(lst, float64(num))
} else if status < 0 {
return nil, fmt.Errorf("Corrupted list of floats")
} else {
break
}
}
attrs[attr] = lst
case C.HYPERDATATYPE_SET_STRING:
C.hyperdex_ds_iterator_init(&C_iter, C.HYPERDATATYPE_SET_STRING,
C_attr.value, C_attr.value_sz)
lst := make(SetStr, 0)
for {
var C_string *C.char
var C_size_t C.size_t
status := C.hyperdex_ds_iterate_set_string_next(&C_iter,
&C_string, &C_size_t)
if status > 0 {
lst = append(lst, C.GoStringN(C_string, C.int(C_size_t)))
} else if status < 0 {
return nil, fmt.Errorf("Corrupted set of strings")
} else {
break
}
}
attrs[attr] = lst
case C.HYPERDATATYPE_SET_INT64:
C.hyperdex_ds_iterator_init(&C_iter, C.HYPERDATATYPE_SET_INT64,
C_attr.value, C_attr.value_sz)
lst := make(SetI64, 0)
for {
var num C.int64_t
status := C.hyperdex_ds_iterate_set_int_next(&C_iter, &num)
if status > 0 {
lst = append(lst, int64(num))
} else if status < 0 {
return nil, fmt.Errorf("Corrupted set of integers")
} else {
break
}
}
attrs[attr] = lst
case C.HYPERDATATYPE_SET_FLOAT:
C.hyperdex_ds_iterator_init(&C_iter, C.HYPERDATATYPE_SET_FLOAT,
C_attr.value, C_attr.value_sz)
lst := make(SetF64, 0)
for {
var num C.double
status := C.hyperdex_ds_iterate_set_float_next(&C_iter, &num)
if status > 0 {
lst = append(lst, float64(num))
} else if status < 0 {
return nil, fmt.Errorf("Corrupted set of floats")
} else {
break
}
}
attrs[attr] = lst
case C.HYPERDATATYPE_MAP_STRING_STRING:
C.hyperdex_ds_iterator_init(&C_iter, C.HYPERDATATYPE_MAP_STRING_STRING,
C_attr.value, C_attr.value_sz)
m := make(MapStrStr)
for {
var C_key_string *C.char
var C_key_size_t C.size_t
var C_value_string *C.char
var C_value_size_t C.size_t
status := C.hyperdex_ds_iterate_map_string_string_next(&C_iter,
&C_key_string, &C_key_size_t, &C_value_string, &C_value_size_t)
if status > 0 {
m[C.GoStringN(C_key_string, C.int(C_key_size_t))] = C.GoStringN(C_value_string, C.int(C_value_size_t))
} else if status < 0 {
return nil, fmt.Errorf("Corrupted map of strings to strings")
} else {
break
}
}
attrs[attr] = m
case C.HYPERDATATYPE_MAP_STRING_INT64:
C.hyperdex_ds_iterator_init(&C_iter, C.HYPERDATATYPE_MAP_STRING_INT64,
C_attr.value, C_attr.value_sz)
m := make(MapStrI64)
for {
var C_key_string *C.char
var C_key_size_t C.size_t
var C_value C.int64_t
status := C.hyperdex_ds_iterate_map_string_int_next(&C_iter,
&C_key_string, &C_key_size_t, &C_value)
if status > 0 {
m[C.GoStringN(C_key_string, C.int(C_key_size_t))] = int64(C_value)
} else if status < 0 {
return nil, fmt.Errorf("Corrupted map of strings to integers")
} else {
break
}
}
attrs[attr] = m
case C.HYPERDATATYPE_MAP_STRING_FLOAT:
C.hyperdex_ds_iterator_init(&C_iter, C.HYPERDATATYPE_MAP_STRING_FLOAT,
C_attr.value, C_attr.value_sz)
m := make(MapStrF64)
for {
var C_key_string *C.char
var C_key_size_t C.size_t
var C_value C.double
status := C.hyperdex_ds_iterate_map_string_float_next(&C_iter,
&C_key_string, &C_key_size_t, &C_value)
if status > 0 {
m[C.GoStringN(C_key_string, C.int(C_key_size_t))] = float64(C_value)
} else if status < 0 {
return nil, fmt.Errorf("Corrupted map of strings to floats")
} else {
break
}
}
attrs[attr] = m
case C.HYPERDATATYPE_MAP_INT64_STRING:
C.hyperdex_ds_iterator_init(&C_iter, C.HYPERDATATYPE_MAP_INT64_STRING,
C_attr.value, C_attr.value_sz)
m := make(MapI64Str)
for {
var C_key C.int64_t
var C_val_string *C.char
var C_val_size_t C.size_t
status := C.hyperdex_ds_iterate_map_int_string_next(&C_iter,
&C_key, &C_val_string, &C_val_size_t)
if status > 0 {
m[int64(C_key)] = C.GoStringN(C_val_string, C.int(C_val_size_t))
} else if status < 0 {
return nil, fmt.Errorf("Corrupted map of integers to strings")
} else {
break
}
}
attrs[attr] = m
case C.HYPERDATATYPE_MAP_INT64_INT64:
C.hyperdex_ds_iterator_init(&C_iter, C.HYPERDATATYPE_MAP_INT64_INT64,
C_attr.value, C_attr.value_sz)
m := make(MapI64I64)
for {
var C_key C.int64_t
var C_val C.int64_t
status := C.hyperdex_ds_iterate_map_int_int_next(&C_iter,
&C_key, &C_val)
if status > 0 {
m[int64(C_key)] = int64(C_val)
} else if status < 0 {
return nil, fmt.Errorf("Corrupted map of integers to integers")
} else {
break
}
}
attrs[attr] = m
case C.HYPERDATATYPE_MAP_INT64_FLOAT:
C.hyperdex_ds_iterator_init(&C_iter, C.HYPERDATATYPE_MAP_INT64_FLOAT,
C_attr.value, C_attr.value_sz)
m := make(MapI64F64)
for {
var C_key C.int64_t
var C_val C.double
status := C.hyperdex_ds_iterate_map_int_float_next(&C_iter,
&C_key, &C_val)
if status > 0 {
m[int64(C_key)] = float64(C_val)
} else if status < 0 {
return nil, fmt.Errorf("Corrupted map of integers to floats")
} else {
break
}
}
attrs[attr] = m
case C.HYPERDATATYPE_MAP_FLOAT_STRING:
C.hyperdex_ds_iterator_init(&C_iter, C.HYPERDATATYPE_MAP_FLOAT_STRING,
C_attr.value, C_attr.value_sz)
m := make(MapF64Str)
for {
var C_key C.double
var C_val_string *C.char
var C_val_size_t C.size_t
status := C.hyperdex_ds_iterate_map_float_string_next(&C_iter,
&C_key, &C_val_string, &C_val_size_t)
if status > 0 {
m[float64(C_key)] = C.GoStringN(C_val_string, C.int(C_val_size_t))
} else if status < 0 {
return nil, fmt.Errorf("Corrupted map of floats to strings")
} else {
break
}
}
attrs[attr] = m
case C.HYPERDATATYPE_MAP_FLOAT_INT64:
C.hyperdex_ds_iterator_init(&C_iter, C.HYPERDATATYPE_MAP_FLOAT_INT64,
C_attr.value, C_attr.value_sz)
m := make(MapF64I64)
for {
var C_key C.double
var C_val C.int64_t
status := C.hyperdex_ds_iterate_map_float_int_next(&C_iter,
&C_key, &C_val)
if status > 0 {
m[float64(C_key)] = int64(C_val)
} else if status < 0 {
return nil, fmt.Errorf("Corrupted map of floats to integers")
} else {
break
}
}
attrs[attr] = m
case C.HYPERDATATYPE_MAP_FLOAT_FLOAT:
C.hyperdex_ds_iterator_init(&C_iter, C.HYPERDATATYPE_MAP_FLOAT_FLOAT,
C_attr.value, C_attr.value_sz)
m := make(MapF64F64)
for {
var C_key C.double
var C_val C.double
status := C.hyperdex_ds_iterate_map_float_float_next(&C_iter,
&C_key, &C_val)
if status > 0 {
m[float64(C_key)] = float64(C_val)
} else if status < 0 {
return nil, fmt.Errorf("Corrupted map of floats to floats")
} else {
break
}
}
attrs[attr] = m
default:
return nil, fmt.Errorf("Unknown datatype %d found for attribute `%s` (#%d)", C_attr.datatype, attr, i)
}
}
return attrs, nil
}