Function garrow_readable_read_bytes

c_glib/arrow-glib/readable.cpp:79–97

* garrow_readable_read_bytes: * @readable: A #GArrowReadable. * @n_bytes: The number of bytes to be read. * @error: (nullable): Return location for a #GError or %NULL. * * Returns: (transfer full) (nullable): #GBytes that has read data on * success, %NULL if there was an error. * * Since: 0.17.0 */

 * Since: 0.17.0
 */
GBytes *
garrow_readable_read_bytes(GArrowReadable *readable, gint64 n_bytes, GError **error)
{
  const auto arrow_readable = garrow_readable_get_raw(readable);

  auto arrow_buffer_result = arrow_readable->Read(n_bytes);
  if (!garrow::check(error, arrow_buffer_result, "[readable][read-bytes]")) {
    return NULL;
  }
  auto arrow_cpu_buffer_result =
    arrow::Buffer::ViewOrCopy(*arrow_buffer_result, arrow::default_cpu_memory_manager());
  if (!garrow::check(error,
                     arrow_cpu_buffer_result,
                     "[readable][read-bytes][view-or-copy]")) {
    return NULL;
  }
  auto arrow_cpu_buffer = *arrow_cpu_buffer_result;
  return g_bytes_new(arrow_cpu_buffer->data(), arrow_cpu_buffer->size());
}

G_END_DECLS