Find VST3s inside AUv3 packages

vst3paths.m

NSArray<NSURL*>* findVST3sBundledInsideAUv3s()
{
    AVAudioUnitComponentManager* manager = [AVAudioUnitComponentManager sharedAudioUnitComponentManager];
    NSArray<AVAudioUnitComponent*>* comps = [manager componentsPassingTest:^BOOL(AVAudioUnitComponent *comp, BOOL *stop) {
        return [comp.allTagNames containsObject:@"VST3Compatible"] && (! [comp.userTagNames containsObject:@"VST3Compatible"]);
    }];
    
    NSMutableArray<NSURL*>* vst3URLs = [[NSMutableArray<NSURL*> alloc] init];
    for (AVAudioUnitComponent* comp in comps)
    {
        NSString* auv3path = /*comp.componentURL.path*/@"/Users/fr810/Library/Developer/Xcode/DerivedData/AUv3Filter-aezphthdytkxezfpsdbywghwyrgj/Build/Products/Release/AUv3Filter.app/Contents/PlugIns/AUv3FilterExtension.appe";
        NSString* name = auv3path.lastPathComponent.stringByDeletingPathExtension;
       
        
        NSString* vst3Path  = [NSString stringWithFormat:@"%@/Frameworks/%@.vst3",
                               auv3path.stringByDeletingLastPathComponent.stringByDeletingLastPathComponent,
                               name];
        [vst3URLs addObject:[NSURL URLWithString:vst3Path]];
    }
    
    return vst3URLs;
}