download static method

void download(Computer computer, ComputerTransport transport, [ String? lastFingerprint ])

Implementation

static void download(
  Computer computer,
  ComputerTransport transport, [
  String? lastFingerprint,
]) {
  final computerDescriptor = _computerDescriptorCache[computer]!;

  final ffi.Pointer<dc_iostream_t> iostream =
      _interfaces.connect(transport, computerDescriptor);

  final device = calloc<ffi.Pointer<dc_device_t>>();
  try {
    handleResult(
      _bindings.dc_device_open(
        device,
        context.value,
        computerDescriptor,
        iostream,
      ),
      'device open',
    );

    final customdata = calloc<_DiveCallbackUserdata>();
    customdata.ref.device = device.value;
    customdata.ref.lastFingerprint =
        lastFingerprint?.toNativeUtf8() ?? ffi.nullptr;

    _divesCache.clear();
    handleResult(
      _bindings.dc_device_foreach(
        device.value,
        ffi.Pointer.fromFunction(_dive_callback, 0),
        customdata.cast(),
      ),
      'device foreach',
    );

    if (lastFingerprint != null) {
      _divesCache.removeWhere((e) => e.hash == lastFingerprint);
    }
    divesCallback?.call(_divesCache);

    handleResult(
      _bindings.dc_device_close(device.value),
      'device close',
    );
  } finally {
    handleResult(
      _bindings.dc_iostream_close(iostream),
      'iostream close',
    );
  }
}