iOS: fix deprecations and leaks

Fixes some deprecations and leaks reported by Xcode Analyzer

platform/iphone/app_delegate.mm

@@ -49,8 +49,10 @@ void _set_keep_screen_on(bool p_enabled);
 Error _shell_open(String p_uri) {
 	NSString *url = [[NSString alloc] initWithUTF8String:p_uri.utf8().get_data()];
 
-	if (![[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:url]])
+	if (![[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:url]]) {
+		[url release];
 		return ERR_CANT_OPEN;
+	}
 
 	printf("opening url %ls\n", p_uri.c_str());
 	[[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]];
@@ -548,7 +550,7 @@ static int frame_count = 0;
 					// can use that instead? (note that left and right seem swapped)
 
 					switch ([[UIApplication sharedApplication] statusBarOrientation]) {
-						case UIDeviceOrientationLandscapeLeft: {
+						case UIInterfaceOrientationLandscapeLeft: {
 							OSIPhone::get_singleton()->update_gravity(-gravity.y, gravity.x,
 									gravity.z);
 							OSIPhone::get_singleton()->update_accelerometer(
@@ -559,7 +561,7 @@ static int frame_count = 0;
 							OSIPhone::get_singleton()->update_gyroscope(-rotation.y, rotation.x,
 									rotation.z);
 						}; break;
-						case UIDeviceOrientationLandscapeRight: {
+						case UIInterfaceOrientationLandscapeRight: {
 							OSIPhone::get_singleton()->update_gravity(gravity.y, -gravity.x,
 									gravity.z);
 							OSIPhone::get_singleton()->update_accelerometer(
@@ -570,7 +572,7 @@ static int frame_count = 0;
 							OSIPhone::get_singleton()->update_gyroscope(rotation.y, -rotation.x,
 									rotation.z);
 						}; break;
-						case UIDeviceOrientationPortraitUpsideDown: {
+						case UIInterfaceOrientationPortraitUpsideDown: {
 							OSIPhone::get_singleton()->update_gravity(-gravity.x, gravity.y,
 									gravity.z);
 							OSIPhone::get_singleton()->update_accelerometer(
@@ -595,7 +597,7 @@ static int frame_count = 0;
 					};
 				}
 
-				bool quit_request = OSIPhone::get_singleton()->iterate();
+				OSIPhone::get_singleton()->iterate();
 			};
 
 		}; break;
@@ -614,7 +616,6 @@ static int frame_count = 0;
 
 	is_focus_out = false;
 
-	[application setStatusBarHidden:YES withAnimation:UIStatusBarAnimationNone];
 	// disable idle timer
 	// application.idleTimerDisabled = YES;
 

platform/iphone/gl_view.h

@@ -107,7 +107,7 @@
 - (void)keyboardOnScreen:(NSNotification *)notification;
 - (void)keyboardHidden:(NSNotification *)notification;
 
-@property NSTimeInterval animationInterval;
+@property(nonatomic, assign) NSTimeInterval animationInterval;
 @property(nonatomic, assign) BOOL useCADisplayLink;
 
 @end

platform/iphone/gl_view.mm

@@ -80,10 +80,12 @@ void _hide_keyboard() {
 };
 
 Rect2 _get_ios_window_safe_area(float p_window_width, float p_window_height) {
-	UIEdgeInsets insets = UIEdgeInsetsMake(0, 0, 0, 0);
-	if (_instance != nil && [_instance respondsToSelector:@selector(safeAreaInsets)]) {
+	UIEdgeInsets insets = UIEdgeInsetsZero;
+
+	if (@available(iOS 11.0, *)) {
 		insets = [_instance safeAreaInsets];
 	}
+
 	ERR_FAIL_COND_V(insets.left < 0 || insets.top < 0 || insets.right < 0 || insets.bottom < 0,
 			Rect2(0, 0, p_window_width, p_window_height));
 	UIEdgeInsets window_insets = UIEdgeInsetsMake(_points_to_pixels(insets.top), _points_to_pixels(insets.left), _points_to_pixels(insets.bottom), _points_to_pixels(insets.right));
@@ -699,7 +701,7 @@ static void clear_touches() {
 - (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
 
 	if (object == _instance.avPlayerItem && [keyPath isEqualToString:@"status"]) {
-		if (_instance.avPlayerItem.status == AVPlayerStatusFailed || _instance.avPlayer.status == AVPlayerStatusFailed) {
+		if (_instance.avPlayerItem.status == AVPlayerItemStatusFailed || _instance.avPlayer.status == AVPlayerStatusFailed) {
 			_stop_video();
 			video_found_error = true;
 		}

platform/iphone/gl_view_gesture_recognizer.m

@@ -68,17 +68,18 @@ const CGFloat kGLGestureMovementDistance = 0.5;
 		[self.view touchesBegan:delayedTouches withEvent:delayedEvent];
 	}
 
+	[delayedTouches release];
 	delayedTouches = nil;
 	delayedEvent = nil;
 }
 
 - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
-	NSSet *cleared = [self clearTouches:touches phase:UITouchPhaseBegan];
+	NSSet *cleared = [self copyClearedTouches:touches phase:UITouchPhaseBegan];
 	[self delayTouches:cleared andEvent:event];
 }
 
 - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
-	NSSet *cleared = [self clearTouches:touches phase:UITouchPhaseMoved];
+	NSSet *cleared = [self copyClearedTouches:touches phase:UITouchPhaseMoved];
 
 	if (delayTimer) {
 		// We should check if movement was significant enough to fire an event
@@ -95,20 +96,24 @@ const CGFloat kGLGestureMovementDistance = 0.5;
 			if (distance > kGLGestureMovementDistance) {
 				[delayTimer fire];
 				[self.view touchesMoved:cleared withEvent:event];
+				[cleared release];
 				return;
 			}
 		}
+		[cleared release];
 		return;
 	}
 
 	[self.view touchesMoved:cleared withEvent:event];
+	[cleared release];
 }
 
 - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
 	[delayTimer fire];
 
-	NSSet *cleared = [self clearTouches:touches phase:UITouchPhaseEnded];
+	NSSet *cleared = [self copyClearedTouches:touches phase:UITouchPhaseEnded];
 	[self.view touchesEnded:cleared withEvent:event];
+	[cleared release];
 }
 
 - (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event {
@@ -116,7 +121,7 @@ const CGFloat kGLGestureMovementDistance = 0.5;
 	[self.view touchesCancelled:touches withEvent:event];
 };
 
-- (NSSet *)clearTouches:(NSSet *)touches phase:(UITouchPhase)phaseToSave {
+- (NSSet *)copyClearedTouches:(NSSet *)touches phase:(UITouchPhase)phaseToSave {
 	NSMutableSet *cleared = [touches mutableCopy];
 
 	for (UITouch *touch in touches) {

platform/iphone/view_controller.h

@@ -34,9 +34,6 @@
 @interface ViewController : UIViewController <GKGameCenterControllerDelegate> {
 };
 
-- (BOOL)shouldAutorotateToInterfaceOrientation:
-		(UIInterfaceOrientation)p_orientation;
-
 - (void)didReceiveMemoryWarning;
 
 - (void)viewDidLoad;

platform/iphone/view_controller.mm

@@ -42,12 +42,12 @@ int add_cmdline(int, char **);
 int add_path(int p_argc, char **p_args) {
 
 	NSString *str = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"godot_path"];
-	if (!str)
+	if (!str) {
 		return p_argc;
+	}
 
-	p_args[p_argc++] = "--path";
-	[str retain]; // memory leak lol (maybe make it static here and delete it in ViewController destructor? @todo
-	p_args[p_argc++] = (char *)[str cString];
+	p_args[p_argc++] = (char *)"--path";
+	p_args[p_argc++] = (char *)[str cStringUsingEncoding:NSUTF8StringEncoding];
 	p_args[p_argc] = NULL;
 
 	return p_argc;
@@ -60,12 +60,11 @@ int add_cmdline(int p_argc, char **p_args) {
 		return p_argc;
 
 	for (int i = 0; i < [arr count]; i++) {
-
 		NSString *str = [arr objectAtIndex:i];
-		if (!str)
+		if (!str) {
 			continue;
-		[str retain]; // @todo delete these at some point
-		p_args[p_argc++] = (char *)[str cString];
+		}
+		p_args[p_argc++] = (char *)[str cStringUsingEncoding:NSUTF8StringEncoding];
 	};
 
 	p_args[p_argc] = NULL;
@@ -81,7 +80,7 @@ int add_cmdline(int p_argc, char **p_args) {
 @implementation ViewController
 
 - (void)didReceiveMemoryWarning {
-
+	[super didReceiveMemoryWarning];
 	printf("*********** did receive memory warning!\n");
 };