Added support for macOS AppKit apps

Restructured project

Added an AppKit demo project

LNViewHierarchyDumper/LNViewHierarchyDumper/Info.plist

@@ -15,7 +15,7 @@
 	<key>CFBundlePackageType</key>
 	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.2.1</string>
+	<string>1.2</string>
 	<key>CFBundleVersion</key>
 	<string>1</string>
 </dict>

LNViewHierarchyDumper/LNViewHierarchyDumper/LNViewHierarchyDumper+LibraryDebug.h

@@ -0,0 +1,16 @@
+//
+//  LNViewHierarchyDumper+LibraryDebug.h
+//  
+//
+//  Created by Leo Natan on 02/08/2023.
+//
+
+#import "LNViewHierarchyDumper-Private.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface LNViewHierarchyDumper (LibraryDebug)
+
+@end
+
+NS_ASSUME_NONNULL_END

LNViewHierarchyDumper/LNViewHierarchyDumper/LNViewHierarchyDumper+LibraryDebug.m

@@ -0,0 +1,85 @@
+//
+//  LNViewHierarchyDumper+LibraryDebug.m
+//  
+//
+//  Created by Leo Natan on 02/08/2023.
+//
+
+#import "LNViewHierarchyDumper+LibraryDebug.h"
+
+//#if DEBUG
+//@import ObjectiveC;
+//@import Darwin;
+//@import MachO.dyld;
+//#endif
+
+@implementation LNViewHierarchyDumper (LibraryDebug)
+
+//#if DEBUG
+//static void func(const struct mach_header* mh, intptr_t vmaddr_slide)
+//{
+//	Dl_info  DlInfo;
+//	dladdr(mh, &DlInfo);
+//	const char* image_name = DlInfo.dli_fname;
+//
+//	NSLog(@"%s", image_name);
+//}
+//
+//
+//static NSUInteger requestCounter = 0;
+//static NSUInteger responseCounter = 0;
+//
+//__attribute__((constructor))
+//static void zzz(void)
+//{
+//	//We are looking for:
+//	//	DebugHierarchyFoundation.framework
+//	//	libViewDebuggerSupport.dylib
+//	_dyld_register_func_for_add_image(func);
+//
+//	//The following code will dump requests made by Xcode View Hierarchy Inspector (and this framework) to ~/Desktop/Request_x.json
+//	{
+//		Class cls = NSClassFromString(@"DebugHierarchyRequest");
+//		SEL sel = NSSelectorFromString(@"requestWithBase64Data:error:");
+//		Method m = class_getClassMethod(cls, sel);
+//		id(*orig)(id, SEL, NSString*, NSError**) = (void*)method_getImplementation(m);
+//
+//		method_setImplementation(m, imp_implementationWithBlock(^(id _self, NSString* request, NSError** error) {
+//			NSData* b64Data = [[NSData alloc] initWithBase64EncodedString:request options:0];
+//			NSString* homePath = NSHomeDirectory();
+//#if TARGET_OS_SIMULATOR
+//			homePath = [homePath substringToIndex:[homePath rangeOfString:@"/Library"].location];
+//#endif
+//			NSLog(@"%@", homePath);
+//			NSURL* outputURL = [[NSURL fileURLWithPath:homePath] URLByAppendingPathComponent:[NSString stringWithFormat:@"Desktop/Request_%@.json", @(requestCounter++)]];
+//			[b64Data writeToURL:outputURL atomically:YES];
+//
+//			return orig(_self, sel, request, error);
+//		}));
+//	}
+//
+//	{
+//		Class cls = NSClassFromString(@"DebugHierarchyTargetHub");
+//		SEL sel = NSSelectorFromString(@"performRequest:error:");
+//		Method m = class_getInstanceMethod(cls, sel);
+//		NSData*(*orig)(id, SEL, id, NSError**) = (void*)method_getImplementation(m);
+//		method_setImplementation(m, imp_implementationWithBlock(^(id _self, id request, NSError** error) {
+//			NSData* rv = orig(_self, sel, request, error);
+//
+//			if(rv != nil)
+//			{
+//				NSString* homePath = NSHomeDirectory();
+//#if TARGET_OS_SIMULATOR
+//				homePath = [homePath substringToIndex:[homePath rangeOfString:@"/Library"].location];
+//#endif
+//				NSURL* outputURL = [[NSURL fileURLWithPath:homePath] URLByAppendingPathComponent:[NSString stringWithFormat:@"Desktop/Response_%@.json", @(responseCounter++)]];
+//				[rv writeToURL:outputURL atomically:YES];
+//			}
+//
+//			return rv;
+//		}));
+//	}
+//}
+//#endif
+
+@end

LNViewHierarchyDumper/LNViewHierarchyDumper/LNViewHierarchyDumper+LibrarySupport.h

@@ -0,0 +1,59 @@
+//
+//  LNViewHierarchyDumper+LibrarySupport.h
+//  ViewHierarchyDumpTester
+//
+//  Created by Leo Natan on 02/08/2023.
+//
+
+#import "LNViewHierarchyDumper.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+#if TARGET_OS_IPHONE && !TARGET_OS_MACCATALYST
+
+@interface NSTask : NSObject @end
+
+@interface NSTask ()
+
+@property (nullable, copy) NSURL* executableURL;
+@property (nullable, copy) NSArray<NSString*>* arguments;
+@property (nullable, copy) NSDictionary<NSString*, NSString*>* environment;
+@property (nullable, retain) id standardOutput;
+@property (nullable, retain) id standardError;
+
+@property(readonly) int terminationStatus;
+
+@property(copy, nonnull) void (^terminationHandler)(NSTask* _Nonnull task);
+
+- (BOOL)launch;
+
+@end
+
+#endif
+
+@interface NSObject ()
+
+//DBGTargetHub
++ (id)sharedHub;
+- (NSData*)performRequestWithRequestInBase64:(NSString*)arg1;
+
+//DebugHierarchyTargetHub
+- (nullable id)performRequest:(id /*DBGTargetHub*/)arg1 error:(NSError**)error;
+
+//DebugHierarchyRequest
++ (nullable id)requestWithBase64Data:(NSString*)arg1 error:(NSError**)arg2;
+
+//NSTask
+- (BOOL)launchAndReturnError:(out NSError **_Nullable)error;
+
+@end
+
+@interface LNViewHierarchyDumper (LibrarySupport)
+
++ (NSURL*)_xcodeURLOrError:(out NSError* __strong * _Nullable)outError;
++ (nullable NSURL*)_debugHierarchyFoundationFrameworkURL:(NSURL*)runtimeURL error:(out NSError** _Nullable)error;
++ (nullable NSURL*)_libViewDebuggerSupportURL:(NSURL*)runtimeURL error:(out NSError** _Nullable)error;
+
+@end
+
+NS_ASSUME_NONNULL_END

LNViewHierarchyDumper/LNViewHierarchyDumper/LNViewHierarchyDumper+LibrarySupport.m

@@ -0,0 +1,212 @@
+//
+//  LNViewHierarchyDumper+LibrarySupport.m
+//  ViewHierarchyDumpTester
+//
+//  Created by Leo Natan on 02/08/2023.
+//
+
+#import "LNViewHierarchyDumper+LibrarySupport.h"
+
+@implementation LNViewHierarchyDumper (LibrarySupport)
+
++ (BOOL)_isMacSandboxed
+{
+	return NSProcessInfo.processInfo.environment[@"APP_SANDBOX_CONTAINER_ID"].length > 0;
+}
+
++ (NSURL*)_xcodeURLOrError:(out NSError* __strong * _Nullable)outError
+{
+	static NSURL* rv = nil;
+	static NSError* error = nil;
+	static dispatch_once_t onceToken;
+	dispatch_once(&onceToken, ^{
+		if(self._isMacSandboxed)
+		{
+			rv = [NSURL fileURLWithPath:@"/Applications/Xcode.app/Contents"];
+			if([rv checkResourceIsReachableAndReturnError:NULL] == NO)
+			{
+				rv = [NSURL fileURLWithPath:@"/Applications/Xcode-beta.app/Contents"];
+				if([rv checkResourceIsReachableAndReturnError:NULL] == NO)
+				{
+					rv = NULL;
+					error = [NSError errorWithDomain:@"LNViewHierarchyDumperDomain" code:0 userInfo:@{NSLocalizedDescriptionKey: @"App is sandboxed and cannot find Xcode in\n/Applications/Xcode.app\nor\n/Applications/Xcode-beta.app"}];
+					return;
+				}
+			}
+		}
+		else
+		{
+			NSTask* whichXcodeTask = [NSTask new];
+			[whichXcodeTask setValue:[NSURL fileURLWithPath:@"/usr/bin/xcode-select"] forKey:@"executableURL"];
+			whichXcodeTask.arguments = @[@"-p"];
+			whichXcodeTask.environment = @{};
+
+			NSPipe* outPipe = [NSPipe pipe];
+			NSMutableData* outData = [NSMutableData new];
+			whichXcodeTask.standardOutput = outPipe;
+			outPipe.fileHandleForReading.readabilityHandler = ^(NSFileHandle * _Nonnull fileHandle) {
+				[outData appendData:fileHandle.availableData];
+			};
+
+			NSPipe* errPipe = [NSPipe pipe];
+			NSMutableData* errData = [NSMutableData new];
+			whichXcodeTask.standardError = errPipe;
+			errPipe.fileHandleForReading.readabilityHandler = ^(NSFileHandle * _Nonnull fileHandle) {
+				[errData appendData:fileHandle.availableData];
+			};
+
+			dispatch_semaphore_t waitForTermination = dispatch_semaphore_create(0);
+
+			[whichXcodeTask setValue:^(NSTask* _Nonnull task) {
+				outPipe.fileHandleForReading.readabilityHandler = nil;
+				errPipe.fileHandleForReading.readabilityHandler = nil;
+
+				dispatch_semaphore_signal(waitForTermination);
+			} forKey:@"terminationHandler"];
+
+			NSError* taskError;
+			[(id)whichXcodeTask launchAndReturnError:&taskError];
+
+			if(taskError == nil)
+			{
+				dispatch_semaphore_wait(waitForTermination, DISPATCH_TIME_FOREVER);
+			}
+			else
+			{
+				error = taskError;
+				return;
+			}
+
+			if(whichXcodeTask.terminationStatus != 0)
+			{
+				NSString* errString = [[NSString alloc] initWithData:errData encoding:NSUTF8StringEncoding];
+				error = [NSError errorWithDomain:@"LNViewHierarchyDumperDomain" code:0 userInfo:@{NSLocalizedDescriptionKey: errString}];
+				return;
+			}
+
+			NSString* xcodePath = [[[NSString alloc] initWithData:outData encoding:NSUTF8StringEncoding] stringByTrimmingCharactersInSet:NSCharacterSet.whitespaceAndNewlineCharacterSet];
+
+			if(xcodePath.length == 0)
+			{
+				error = [NSError errorWithDomain:@"LNViewHierarchyDumperDomain" code:0 userInfo:@{NSLocalizedDescriptionKey: @"Unable to find the current active developer directory"}];
+
+				return;
+			}
+
+			rv = [[[NSURL fileURLWithPath:xcodePath] URLByAppendingPathComponent:@".."] URLByStandardizingPath];
+		}
+	});
+	if(outError != NULL)
+	{
+		*outError = error;
+	}
+	return rv;
+}
+
++ (NSURL*)_debugHierarchyFoundationFrameworkURL_iOS:(NSURL*)runtimeURL
+{
+	NSString* rv = nil;
+	if(@available(iOS 17, *))
+	{
+		rv = @"System/Library/PrivateFrameworks/DebugHierarchyFoundation.framework";
+	}
+	else
+	{
+		rv = @"Developer/Library/PrivateFrameworks/DebugHierarchyFoundation.framework";
+	}
+#if TARGET_OS_SIMULATOR
+	return [runtimeURL URLByAppendingPathComponent:rv];
+#else
+	return [NSURL fileURLWithPath:[NSString stringWithFormat:@"/%@", rv]];
+#endif
+}
+
++ (NSURL*)_debugHierarchyFoundationFrameworkURL_macOS:(NSURL*)runtimeURL isCatalyst:(BOOL)isCatalyst
+{
+	return [runtimeURL URLByAppendingPathComponent:@"SharedFrameworks/DebugHierarchyFoundation.framework"];
+}
+
++ (nullable NSURL*)_debugHierarchyFoundationFrameworkURL:(NSURL*)runtimeURL error:(out NSError** _Nullable)error
+{
+#if TARGET_OS_IPHONE && !TARGET_OS_MACCATALYST
+	if (@available(iOS 14.0, *))
+	{
+		if(NSProcessInfo.processInfo.isiOSAppOnMac)
+		{
+			NSError* xcodeError = nil;
+			NSURL* xcodeURL = [self _xcodeURLOrError:&xcodeError];
+			if(xcodeError)
+			{
+				if(error) { *error = xcodeError; }
+				return nil;
+			}
+
+			return [self _debugHierarchyFoundationFrameworkURL_macOS:xcodeURL isCatalyst:YES];
+		}
+	}
+	return [self _debugHierarchyFoundationFrameworkURL_iOS:runtimeURL];
+#else
+#if TARGET_OS_MACCATALYST
+	BOOL isCatalyst = YES;
+#else
+	BOOL isCatalyst = NO;
+#endif
+	return [self _debugHierarchyFoundationFrameworkURL_macOS:runtimeURL isCatalyst:isCatalyst];
+#endif
+}
+
++ (NSURL*)_libViewDebuggerSupportURL_iOS:(NSURL*)runtimeURL
+{
+	NSString* rv = nil;
+	if(@available(iOS 17, *))
+	{
+		rv = @"usr/lib/libViewDebuggerSupport.dylib";
+	}
+	else
+	{
+		rv = @"Developer/Library/PrivateFrameworks/DTDDISupport.framework/libViewDebuggerSupport.dylib";
+	}
+#if TARGET_OS_SIMULATOR
+	return [runtimeURL URLByAppendingPathComponent:rv];
+#else
+	return [NSURL fileURLWithPath:[NSString stringWithFormat:@"/%@", rv]];
+#endif
+}
+
++ (NSURL*)_libViewDebuggerSupportURL_macOS:(NSURL*)runtimeURL isCatalyst:(BOOL)isCatalyst
+{
+	NSString* libName = isCatalyst ? @"libViewDebuggerSupport_macCatalyst.dylib" : @"libViewDebuggerSupport.dylib";
+	return [runtimeURL URLByAppendingPathComponent:[NSString stringWithFormat:@"Developer/Platforms/MacOSX.platform/Developer/Library/Debugger/%@", libName]];
+}
+
++ (nullable NSURL*)_libViewDebuggerSupportURL:(NSURL*)runtimeURL error:(out NSError** _Nullable)error
+{
+#if TARGET_OS_IPHONE && !TARGET_OS_MACCATALYST
+	if (@available(iOS 14.0, *))
+	{
+		if(NSProcessInfo.processInfo.isiOSAppOnMac)
+		{
+			NSError* xcodeError = nil;
+			NSURL* xcodeURL = [self _xcodeURLOrError:&xcodeError];
+			if(xcodeError)
+			{
+				if(error) { *error = xcodeError; }
+				return nil;
+			}
+
+			return [self _libViewDebuggerSupportURL_macOS:xcodeURL isCatalyst:YES];
+		}
+	}
+	return [self _libViewDebuggerSupportURL_iOS:runtimeURL];
+#else
+#if TARGET_OS_MACCATALYST
+	BOOL isCatalyst = YES;
+#else
+	BOOL isCatalyst = NO;
+#endif
+	return [self _libViewDebuggerSupportURL_macOS:runtimeURL isCatalyst:isCatalyst];
+#endif
+}
+
+
+@end