Start on login - helper

baRSS-Helper/main.m

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+//
+//  The MIT License (MIT)
+//  Copyright (c) 2018 Oleg Geier
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of
+//  this software and associated documentation files (the "Software"), to deal in
+//  the Software without restriction, including without limitation the rights to
+//  use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+//  of the Software, and to permit persons to whom the Software is furnished to do
+//  so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+
+#import <Cocoa/Cocoa.h>
+
+int main(int argc, const char * argv[]) {
+	@autoreleasepool {
+		// see: http://martiancraft.com/blog/2015/01/login-items/
+		NSArray<NSRunningApplication*> *arr = [NSRunningApplication runningApplicationsWithBundleIdentifier:@"de.relikd.baRSS"];
+		if (arr.count == 0) { // if not already running
+			NSArray *pathComponents = [[[NSBundle mainBundle] bundlePath] pathComponents];
+			pathComponents = [pathComponents subarrayWithRange:NSMakeRange(0, [pathComponents count] - 4)];
+			NSString *path = [NSString pathWithComponents:pathComponents];
+			[[NSWorkspace sharedWorkspace] launchApplication:path];
+		}
+		/*
+		 Important: If your daemon shuts down too quickly after being launched,
+		 launchd may think it has crashed. Daemons that continue this behavior may
+		 be suspended and not launched again when future requests arrive. To avoid
+		 this behavior, do not shut down for at least 10 seconds after launch.
+		 */
+		// https://developer.apple.com/library/archive/documentation/MacOSX/Conceptual/BPSystemStartup/Chapters/CreatingLaunchdJobs.html
+		sleep(10); // Not sure if this is necessary. However, it doesnt hurt.
+		[NSApp terminate:nil];
+	}
+	return 0;
+}