1 files changed, 51 insertions, 0 deletions
diff --git a/.config/xmonad/xmonadctl.hs b/.config/xmonad/xmonadctl.hs
new file mode 100644
index 0000000..d6180d5
--- /dev/null
+++ b/.config/xmonad/xmonadctl.hs
@@ -0,0 +1,51 @@
+import Graphics.X11.Xlib
+import Graphics.X11.Xlib.Extras
+import System.Environment
+import System.IO
+import Data.Char
+
+main :: IO ()
+main = parse True "XMONAD_COMMAND" =<< getArgs
+
+parse :: Bool -> String -> [String] -> IO ()
+parse input addr args = case args of
+        ["--"] | input -> repl addr
+               | otherwise -> return ()
+        ("--":xs) -> sendAll addr xs
+        ("-a":a:xs) -> parse input a xs
+        ("-h":_) -> showHelp
+        ("--help":_) -> showHelp
+        ("-?":_) -> showHelp
+        (a@('-':_):_) -> hPutStrLn stderr ("Unknown option " ++ a)
+
+        (x:xs) -> sendCommand addr x >> parse False addr xs
+        [] | input -> repl addr
+           | otherwise -> return ()
+
+
+repl :: String -> IO ()
+repl addr = do e <- isEOF
+               case e of
+                True -> return ()
+                False -> do l <- getLine
+                            sendCommand addr l
+                            repl addr
+
+sendAll :: String -> [String] -> IO ()
+sendAll addr ss = foldr (\a b -> sendCommand addr a >> b) (return ()) ss
+
+sendCommand :: String -> String -> IO ()
+sendCommand addr s = do
+  d   <- openDisplay ""
+  rw  <- rootWindow d $ defaultScreen d
+  a <- internAtom d addr False
+  m <- internAtom d s False
+  allocaXEvent $ \e -> do
+                  setEventType e clientMessage
+                  setClientMessageEvent e rw a 32 m currentTime
+                  sendEvent d rw False structureNotifyMask e
+                  sync d False
+
+showHelp :: IO ()
+showHelp = do pn <- getProgName
+              putStrLn ("Send commands to a running instance of xmonad. xmonad.hs must be configured with XMonad.Hooks.ServerMode to work.\n-a atomname can be used at any point in the command line arguments to change which atom it is sending on.\nIf sent with no arguments or only -a atom arguments, it will read commands from stdin.\nEx:\n" ++ pn ++ " cmd1 cmd2\n" ++ pn ++ " -a XMONAD_COMMAND cmd1 cmd2 cmd3 -a XMONAD_PRINT hello world\n" ++ pn ++ " -a XMONAD_PRINT # will read data from stdin.\nThe atom defaults to XMONAD_COMMAND.")