| // Copyright (c) 2023, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| import 'dart:ffi'; |
| import 'dart:io'; |
| |
| import 'package:ffi/ffi.dart'; |
| |
| void main() { |
| if (Platform.isWindows || Platform.isAndroid) { |
| // printf is not linked in. |
| return; |
| } |
| using((arena) { |
| printf('Something\n'.toNativeUtf8(allocator: arena)); |
| printfInt32('Something %i\n'.toNativeUtf8(allocator: arena), 32); |
| printfInt32x2('Something %i %i\n'.toNativeUtf8(allocator: arena), 32, 64); |
| }); |
| } |
| |
| final printf = DynamicLibrary.executable().lookupFunction< |
| Void Function(Pointer<Utf8>, VarArgs<()>), |
| void Function(Pointer<Utf8>)>('printf'); |
| |
| final printfInt32 = DynamicLibrary.executable().lookupFunction< |
| Void Function(Pointer<Utf8>, VarArgs<(Int32,)>), |
| void Function(Pointer<Utf8>, int)>('printf'); |
| |
| final printfInt32x2 = DynamicLibrary.executable().lookupFunction< |
| Void Function(Pointer<Utf8>, VarArgs<(Int32, Int32)>), |
| void Function(Pointer<Utf8>, int, int)>('printf'); |