make the standalone OSX app automatically install itself when run

Utility/OSX.hs

@@ -0,0 +1,43 @@
+{- OSX stuff
+ -
+ - Copyright 2012 Joey Hess <joey@kitenet.net>
+ -
+ - Licensed under the GNU GPL version 3 or higher.
+ -}
+
+module Utility.OSX where
+
+import Utility.Path
+
+import System.FilePath
+
+autoStartBase :: String -> FilePath
+autoStartBase label = "Library" </> "LaunchAgents" </> label ++ ".plist"
+
+systemAutoStart :: String -> FilePath
+systemAutoStart label = "/" </> autoStartBase label
+
+userAutoStart :: String -> IO FilePath
+userAutoStart label = do
+	home <- myHomeDir
+	return $ home </> autoStartBase label
+
+{- Generates an OSX autostart plist file with a given label, command, and
+ - params to run at boot or login. -}
+genOSXAutoStartFile :: String -> String -> [String] -> String
+genOSXAutoStartFile label command params = unlines
+	[ "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
+	, "<!DOCTYPE plist PUBLIC \"-//Apple//DTD PLIST 1.0//EN\" \"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">"
+	, "<plist version=\"1.0\">"
+	, "<dict>"
+	, "<key>Label</key>"
+	, "<string>" ++ label ++ "</string>"
+	, "<key>ProgramArguments</key>"
+	, "<array>"
+	, unlines $ map (\v -> "<string>" ++ v ++ "</string>") (command:params)
+	, "</array>"
+	, "<key>RunAtLoad</key>"
+	, "</dict>"
+	, "</plist>"
+	]
+