[AltServer] Adds Sparkle support

Pods/Sparkle/Sparkle.framework/Versions/A/Headers/SPUDownloaderDelegate.h

@@ -0,0 +1,38 @@
+//
+//  SPUDownloaderDelegate.h
+//  Sparkle
+//
+//  Created by Mayur Pawashe on 4/1/16.
+//  Copyright © 2016 Sparkle Project. All rights reserved.
+//
+
+#if __has_feature(modules)
+@import Foundation;
+#else
+#import <Foundation/Foundation.h>
+#endif
+
+NS_ASSUME_NONNULL_BEGIN
+
+@class SPUDownloadData;
+
+@protocol SPUDownloaderDelegate <NSObject>
+
+// This is only invoked for persistent downloads
+- (void)downloaderDidSetDestinationName:(NSString *)destinationName temporaryDirectory:(NSString *)temporaryDirectory;
+
+// Under rare cases, this may be called more than once, in which case the current progress should be reset back to 0
+// This is only invoked for persistent downloads
+- (void)downloaderDidReceiveExpectedContentLength:(int64_t)expectedContentLength;
+
+// This is only invoked for persistent downloads
+- (void)downloaderDidReceiveDataOfLength:(uint64_t)length;
+
+// downloadData is nil if this is a persisent download, otherwise it's non-nil if it's a temporary download
+- (void)downloaderDidFinishWithTemporaryDownloadData:(SPUDownloadData * _Nullable)downloadData;
+
+- (void)downloaderDidFailWithError:(NSError *)error;
+
+@end
+
+NS_ASSUME_NONNULL_END