Nice 7z

Nice 7z is a wrapper of https://github.com/7zip-dev/7zip source code to extract a .7z archive to a specific folder. This was build to be used on Android and iOS.

Build

Android

You can build the source code as shared libraries for Android with build_android.sh script.

You need to provide ANDROID_NDK as an environment variable.

$ ./build_android.sh

or

env ANDROID_NDK=/path/to/android/ndk ./build_android.sh

The shared libraries will be in the prebuilt/release directory.

iOS

You can build the source code for iOS with build_ios.sh script.

You need to provide APPLE_TEAM_ID as an environment variable. You can find it on your apple developper account.

env APPLE_TEAM_ID=my_team_id ./build_ios.sh

The xcframework will be in the build_ios directory

How to use it

Dart ffi (Flutter)

typedef ProgressCallback = Void Function(Double);
typedef Extract7zArchiveC = Int32 Function(
  Pointer<Utf8> source,
  Pointer<Utf8> dest,
  Pointer<NativeFunction<ProgressCallback>> progress,
);
typedef Extract7zArchiveDart = int Function(
  Pointer<Utf8> source,
  Pointer<Utf8> dest,
  Pointer<NativeFunction<ProgressCallback>> progress,
);

class Nice7z {
  static late DynamicLibrary _nice7z;
  static late Extract7zArchiveDart _nice7zExtract;

  static Nice7z? _instance;

  Nice7z._();

  factory Nice7z() => _instance ??= Nice7z._();

  void init() {
    _nice7z = Platform.isAndroid ? DynamicLibrary.open('libnice7z.so') : DynamicLibrary.process();

    _nice7zExtract =
        _nice7z.lookup<NativeFunction<Extract7zArchiveC>>("extract_7z_archive").asFunction<Extract7zArchiveDart>();
  }
}