// Next reads packets from a packet table starting at the current index into the value pointed at by data.
// i.e. data is a pointer to an array or a slice.
func (t *Table) Next(data interface{}) error {
rt := reflect.TypeOf(data)
if rt.Kind() != reflect.Ptr {
return fmt.Errorf("hdf5: invalid value type. got=%v, want pointer", rt.Kind())
}
rt = rt.Elem()
rv := reflect.Indirect(reflect.ValueOf(data))
n := C.size_t(0)
cdata := unsafe.Pointer(nil)
switch rt.Kind() {
case reflect.Array:
if rv.Cap() <= 0 {
panic(fmt.Errorf("not enough capacity in array (cap=%d)", rv.Cap()))
}
cdata = unsafe.Pointer(rv.UnsafeAddr())
n = C.size_t(rv.Cap())
case reflect.Slice:
if rv.Cap() <= 0 {
panic(fmt.Errorf("not enough capacity in slice (cap=%d)", rv.Cap()))
}
slice := (*reflect.SliceHeader)(unsafe.Pointer(rv.UnsafeAddr()))
cdata = unsafe.Pointer(slice.Data)
n = C.size_t(rv.Cap())
default:
panic(fmt.Errorf("unsupported kind (%s), need slice or array", rt.Kind()))
}
err := C.H5PTget_next(t.id, n, cdata)
return h5err(err)
}
// Reads packets from a packet table starting at the current index.
// herr_t H5PTget_next( hid_t table_id, size_t nrecords, void *data)
func (t *Table) Next(data interface{}) error {
rt := reflect.TypeOf(data)
rv := reflect.ValueOf(data)
c_nrecords := C.size_t(0)
c_data := unsafe.Pointer(nil)
switch rt.Kind() {
case reflect.Array:
//fmt.Printf("--> array\n")
if rv.Cap() <= 0 {
panic(fmt.Sprintf("not enough capacity in array (cap=%d)", rv.Cap()))
}
c_data = unsafe.Pointer(rv.Index(0).UnsafeAddr())
c_nrecords = C.size_t(rv.Cap())
case reflect.Slice:
//fmt.Printf("--> slice\n")
if rv.Cap() <= 0 {
panic(fmt.Sprintf("not enough capacity in slice (cap=%d)", rv.Cap()))
}
slice := (*reflect.SliceHeader)(unsafe.Pointer(rv.UnsafeAddr()))
c_data = unsafe.Pointer(slice.Data)
c_nrecords = C.size_t(rv.Cap())
default:
panic(fmt.Sprintf("unhandled kind (%s) need slice or array", rt.Kind()))
}
//fmt.Printf("--data: %v...\n", data)
err := C.H5PTget_next(t.id, c_nrecords, c_data)
//fmt.Printf("--data: err [%v]\n", err)
//fmt.Printf("--data: %v... [%v]\n", data, err)
return togo_err(err)
}
// Next reads packets from a packet table starting at the current index.
func (t *Table) Next(data interface{}) error {
rt := reflect.TypeOf(data)
rv := reflect.ValueOf(data)
n := C.size_t(0)
cdata := unsafe.Pointer(nil)
switch rt.Kind() {
case reflect.Array:
if rv.Cap() <= 0 {
panic(fmt.Sprintf("not enough capacity in array (cap=%d)", rv.Cap()))
}
cdata = unsafe.Pointer(rv.Index(0).UnsafeAddr())
n = C.size_t(rv.Cap())
default:
panic(fmt.Sprintf("unsupported kind (%s), need slice or array", rt.Kind()))
}
err := C.H5PTget_next(t.id, n, cdata)
return h5err(err)
}