patch for ios custom file types in juce

ios-custom-file-types.patch

diff --git a/modules/juce_events/messages/juce_ApplicationBase.h b/modules/juce_events/messages/juce_ApplicationBase.h
index efb639d27..1086efeaa 100644
--- a/modules/juce_events/messages/juce_ApplicationBase.h
+++ b/modules/juce_events/messages/juce_ApplicationBase.h
@@ -205,6 +205,13 @@ public:
     */
     virtual void memoryWarningReceived()     { jassertfalse; }

+    /** Called by the operating system when a custim file type was opened. You are expected
+     * to return true of you handled the URL.
+
+        At the moment this method is only called on iOS.
+    */
+    virtual void urlOpened(const URL&)     { }
+
     //==============================================================================
     /** This will be called when the back button on a device is pressed. The return value
         should be used to indicate whether the back button event has been handled by
diff --git a/modules/juce_gui_basics/native/juce_ios_Windowing.mm b/modules/juce_gui_basics/native/juce_ios_Windowing.mm
index 41503d2a7..a1b3d2b16 100644
--- a/modules/juce_gui_basics/native/juce_ios_Windowing.mm
+++ b/modules/juce_gui_basics/native/juce_ios_Windowing.mm
@@ -192,6 +192,66 @@ namespace juce
 {
     _pushNotificationsDelegate = delegate;
 }
+- (BOOL) application:(UIApplication *)application openURL:(NSURL *)
+        url options:(NSDictionary<UIApplicationOpenURLOptionsKey, id> *)options
+{
+    if(!JUCEApplicationBase::getInstance())
+    {
+        [self applicationDidFinishLaunching:application];
+    }
+
+    // mostly stolen from didPickDocumentAtURL
+    NSUInteger accessOptions = NSFileCoordinatorReadingWithoutChanges;
+
+    auto *fileAccessIntent = [NSFileAccessIntent readingIntentWithURL:url options:accessOptions];
+
+    NSArray<NSFileAccessIntent *> *intents = @[fileAccessIntent];
+
+    auto *fileCoordinator = [[NSFileCoordinator alloc] initWithFilePresenter:nil];
+
+    [fileCoordinator coordinateAccessWithIntents:intents queue:[NSOperationQueue mainQueue] byAccessor:^(NSError *err) {
+        if (err == nil) {
+            [url startAccessingSecurityScopedResource];
+
+            NSError *error = nil;
+
+            NSData *bookmark = [url bookmarkDataWithOptions:0
+                             includingResourceValuesForKeys:nil
+                                              relativeToURL:nil
+                                                      error:&error];
+
+            [bookmark retain];
+
+            [url stopAccessingSecurityScopedResource];
+
+            URL juceUrl(nsStringToJuce([url absoluteString]));
+
+            if (error == nil) {
+                setURLBookmark(juceUrl, (void *) bookmark);
+            } else {
+                auto *desc = [error localizedDescription];
+                ignoreUnused(desc);
+                jassertfalse;
+            }
+
+            if (auto *app = JUCEApplicationBase::getInstance())
+            {
+                app->urlOpened(juceUrl);
+            }
+            else
+            {
+                jassertfalse;
+            }
+        } else {
+            auto *desc = [err localizedDescription];
+            ignoreUnused(desc);
+            jassertfalse;
+        }
+    }];
+
+    return YES;
+}
+

 #if JUCE_PUSH_NOTIFICATIONS
 - (void) application: (UIApplication*) application didRegisterUserNotificationSettings: (UIUserNotificationSettings*) notificationSettings