1 files changed, 32 insertions, 0 deletions
diff --git a/src/Rahm/Desktop/Logger.hs b/src/Rahm/Desktop/Logger.hs
new file mode 100644
index 0000000..c73942f
--- /dev/null
+++ b/src/Rahm/Desktop/Logger.hs
@@ -0,0 +1,32 @@
+module Rahm.Desktop.Logger where
+
+import XMonad
+import qualified XMonad.Util.ExtensibleState as XS
+import System.IO
+
+import Rahm.Desktop.NoPersist
+
+newtype LoggerState =
+  LoggerState {
+    logHandle :: Maybe (NoPersist Handle)
+  }
+
+instance ExtensionClass LoggerState where
+  initialValue = LoggerState Nothing
+
+logs :: String -> X ()
+logs s = do
+  LoggerState handle' <- XS.get
+
+  handle <-
+    case handle' of
+      Nothing -> do
+        handle <- io $ openFile "/tmp/xmonad.log" AppendMode
+        XS.put $ LoggerState $ Just $ NoPersist handle
+        return handle
+
+      Just (NoPersist h) -> return h
+
+  io $ do
+    hPutStrLn handle s
+    hFlush handle