From fa681551411e8c74e6462f6997c37fcc38335d4d Mon Sep 17 00:00:00 2001
From: jao <jao@gnu.org>
Date: Fri, 30 Nov 2018 01:46:14 +0000
Subject: XMobar.App.Opts

---
 src/Xmobar/App/Main.hs | 48 +++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 47 insertions(+), 1 deletion(-)

(limited to 'src/Xmobar/App/Main.hs')

diff --git a/src/Xmobar/App/Main.hs b/src/Xmobar/App/Main.hs
index 34d73e5..efc2753 100644
--- a/src/Xmobar/App/Main.hs
+++ b/src/Xmobar/App/Main.hs
@@ -15,10 +15,12 @@
 ------------------------------------------------------------------------------
 
 
-module Xmobar.App.Main (xmobar) where
+module Xmobar.App.Main (xmobar, doOpts) where
 
 import Data.Foldable (for_)
 import qualified Data.Map as Map
+import System.Exit
+import Text.Read (readMaybe)
 
 import Graphics.X11.Xlib
 import Control.Concurrent.Async (Async, cancel)
@@ -30,6 +32,7 @@ import Xmobar.Run.Template
 import Xmobar.X11.Types
 import Xmobar.X11.Text
 import Xmobar.X11.Window
+import Xmobar.App.Opts
 import Xmobar.App.EventLoop (startLoop, startCommand)
 
 xmobar :: Config -> IO ()
@@ -54,3 +57,46 @@ cleanupThreads :: [[([Async ()], a)]] -> IO ()
 cleanupThreads vars =
   for_ (concat vars) $ \(asyncs, _) ->
     for_ asyncs cancel
+
+doOpts :: Config -> [Opts] -> IO Config
+doOpts conf [] =
+  return (conf {lowerOnStart = lowerOnStart conf && overrideRedirect conf})
+doOpts conf (o:oo) =
+  case o of
+    Help -> putStr   usage >> exitSuccess
+    Version -> putStrLn info  >> exitSuccess
+    Debug -> doOpts' conf
+    Font s -> doOpts' (conf {font = s})
+    WmClass s -> doOpts' (conf {wmClass = s})
+    WmName s -> doOpts' (conf {wmName = s})
+    BgColor s -> doOpts' (conf {bgColor = s})
+    FgColor s -> doOpts' (conf {fgColor = s})
+    Alpha n -> doOpts' (conf {alpha = read n})
+    T -> doOpts' (conf {position = Top})
+    B -> doOpts' (conf {position = Bottom})
+    D -> doOpts' (conf {overrideRedirect = False})
+    AlignSep s -> doOpts' (conf {alignSep = s})
+    SepChar s -> doOpts' (conf {sepChar = s})
+    Template s -> doOpts' (conf {template = s})
+    IconRoot s -> doOpts' (conf {iconRoot = s})
+    OnScr n -> doOpts' (conf {position = OnScreen (read n) $ position conf})
+    Commands s -> case readCom 'c' s of
+                    Right x -> doOpts' (conf {commands = x})
+                    Left e -> putStr (e ++ usage) >> exitWith (ExitFailure 1)
+    AddCommand s -> case readCom 'C' s of
+                      Right x -> doOpts' (conf {commands = commands conf ++ x})
+                      Left e -> putStr (e ++ usage) >> exitWith (ExitFailure 1)
+    Position s -> readPosition s
+  where readCom c str =
+          case readStr str of
+            [x] -> Right x
+            _  -> Left ("xmobar: cannot read list of commands " ++
+                        "specified with the -" ++ c:" option\n")
+        readStr str = [x | (x,t) <- reads str, ("","") <- lex t]
+        doOpts' c = doOpts c oo
+        readPosition string =
+            case readMaybe string of
+                Just x  -> doOpts' (conf { position = x })
+                Nothing -> do
+                    putStrLn "Can't parse position option, ignoring"
+                    doOpts' conf
-- 
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