Rearchitect library

.gitignore

@@ -33,3 +33,6 @@ migrate_working_dir/
 /build/
 /coverage/
 pubspec.lock
+
+# Runtime output
+output.ppm

packages/sane/example/main.dart

@@ -5,17 +5,20 @@ import 'dart:typed_data';
 
 import 'package:logging/logging.dart';
 import 'package:sane/sane.dart';
+import 'package:sane/src/impl/sane_dev.dart';
+import 'package:sane/src/impl/sane_native.dart';
 
 void main(List<String> args) async {
   Logger.root.level = Level.ALL;
   Logger.root.onRecord.listen((record) {
     print('${record.level.name}: ${record.time}: ${record.message}');
   });
 
-  final sane = SaneNative(sane: SaneDev());
-  await sane.spawn();
+  final sane = NativeSane(MockSane());
 
-  await sane.init();
+  final version = await sane.initialize();
+
+  print(version);
 
   final devices = await sane.getDevices(localOnly: false);
   for (final device in devices) {
@@ -26,40 +29,36 @@ void main(List<String> args) async {
     return;
   }
 
-  final handle = await sane.openDevice(devices.first);
+  final device = devices.first;
 
-  final optionDescriptors = await sane.getAllOptionDescriptors(handle);
+  final optionDescriptors = await device.getAllOptionDescriptors();
 
   for (final optionDescriptor in optionDescriptors) {
     if (optionDescriptor.name == 'mode') {
-      await sane.controlStringOption(
-        handle: handle,
-        index: optionDescriptor.index,
-        action: SaneAction.setValue,
-        value: 'Color',
+      await device.controlStringOption(
+        optionDescriptor.index,
+        SaneAction.setValue,
+        'Color',
       );
       break;
     }
   }
 
-  await sane.start(handle);
+  await device.start();
 
-  final parameters = await sane.getParameters(handle);
+  final parameters = await device.getParameters();
   print('Parameters: format(${parameters.format}), depth(${parameters.depth})');
 
   final rawPixelDataList = <Uint8List>[];
   Uint8List? bytes;
   while (true) {
-    bytes = await sane.read(handle, parameters.bytesPerLine);
+    bytes = await device.read(bufferSize: parameters.bytesPerLine);
     if (bytes.isEmpty) break;
     rawPixelDataList.add(bytes);
   }
 
-  await sane.cancel(handle);
-  await sane.close(handle);
-  await sane.exit();
-
-  sane.kill();
+  await device.cancel();
+  await device.close();
 
   Uint8List mergeUint8Lists(List<Uint8List> lists) {
     final totalLength = lists.fold(0, (length, list) => length + list.length);

packages/sane/lib/sane.dart

@@ -1,8 +1,5 @@
 library;
 
 export 'src/exceptions.dart';
-export 'src/impl/sane_dev.dart';
-export 'src/impl/sane_native.dart';
-export 'src/impl/sane_sync.dart';
+export 'src/sane.dart';
 export 'src/structures.dart';
-export 'src/utils.dart';

packages/sane/lib/src/bindings.g.dart

@@ -250,6 +250,17 @@ class LibSane {
           'sane_strstatus');
   late final _sane_strstatus =
       _sane_strstatusPtr.asFunction<SANE_String_Const Function(int)>();
+
+  late final addresses = _SymbolAddresses(this);
+}
+
+class _SymbolAddresses {
+  final LibSane _library;
+
+  _SymbolAddresses(this._library);
+
+  ffi.Pointer<ffi.NativeFunction<ffi.Void Function(SANE_Handle)>>
+      get sane_close => _library._sane_closePtr;
 }
 
 enum SANE_Status {

packages/sane/lib/src/extensions.dart

@@ -1,6 +1,8 @@
+import 'package:meta/meta.dart';
 import 'package:sane/src/bindings.g.dart';
 import 'package:sane/src/exceptions.dart';
 
+@internal
 extension SaneStatusExtension on SANE_Status {
   /// Throws [SaneException] if the status is not [SANE_Status.STATUS_GOOD].
   @pragma('vm:prefer-inline')