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authorjao <jao@gnu.org>2018-11-25 15:12:29 +0000
committerjao <jao@gnu.org>2018-11-25 15:12:29 +0000
commitb12fe3ebdaf3a4a539b85f742a582925d7e811f1 (patch)
tree779a93507ffc9d86acf7b07d1398a0a6832aba05 /app/Main.hs
parent77df1ac30fa7af5948f7ff64f5fee9aed64552b3 (diff)
downloadxmobar-b12fe3ebdaf3a4a539b85f742a582925d7e811f1.tar.gz
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The app dir
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+{-# LANGUAGE FlexibleContexts #-}
+-----------------------------------------------------------------------------
+-- |
+-- Module : Xmobar.Main
+-- Copyright : (c) Andrea Rossato
+-- License : BSD-style (see LICENSE)
+--
+-- Maintainer : Jose A. Ortega Ruiz <jao@gnu.org>
+-- Stability : unstable
+-- Portability : unportable
+--
+-- The main module of Xmobar, a text based status bar
+--
+-----------------------------------------------------------------------------
+
+module Main (main) where
+
+import Data.List (intercalate)
+
+import Data.Version (showVersion)
+import System.Console.GetOpt
+import System.Exit
+import System.Environment (getArgs)
+import Control.Monad (unless)
+import Text.Read (readMaybe)
+
+import Xmobar (xmobar)
+import Xmobar.Config
+
+import Paths_xmobar (version)
+import Configuration (readConfig, readDefaultConfig)
+
+-- $main
+
+-- | The main entry point
+main :: IO ()
+main = do
+ (o,file) <- getArgs >>= getOpts
+ (c,defaultings) <- case file of
+ [cfgfile] -> readConfig cfgfile usage
+ _ -> readDefaultConfig usage
+ unless (null defaultings) $ putStrLn $
+ "Fields missing from config defaulted: " ++ intercalate "," defaultings
+ doOpts c o >>= xmobar
+
+data Opts = Help
+ | Version
+ | Font String
+ | BgColor String
+ | FgColor String
+ | Alpha String
+ | T
+ | B
+ | D
+ | AlignSep String
+ | Commands String
+ | AddCommand String
+ | SepChar String
+ | Template String
+ | OnScr String
+ | IconRoot String
+ | Position String
+ | WmClass String
+ | WmName String
+ deriving Show
+
+options :: [OptDescr Opts]
+options =
+ [ Option "h?" ["help"] (NoArg Help) "This help"
+ , Option "V" ["version"] (NoArg Version) "Show version information"
+ , Option "f" ["font"] (ReqArg Font "font name") "The font name"
+ , Option "w" ["wmclass"] (ReqArg WmClass "class") "X11 WM_CLASS property"
+ , Option "n" ["wmname"] (ReqArg WmName "name") "X11 WM_NAME property"
+ , Option "B" ["bgcolor"] (ReqArg BgColor "bg color" )
+ "The background color. Default black"
+ , Option "F" ["fgcolor"] (ReqArg FgColor "fg color")
+ "The foreground color. Default grey"
+ , Option "i" ["iconroot"] (ReqArg IconRoot "path")
+ "Root directory for icon pattern paths. Default '.'"
+ , Option "A" ["alpha"] (ReqArg Alpha "alpha")
+ "The transparency: 0 is transparent, 255 is opaque. Default: 255"
+ , Option "o" ["top"] (NoArg T) "Place xmobar at the top of the screen"
+ , Option "b" ["bottom"] (NoArg B)
+ "Place xmobar at the bottom of the screen"
+ , Option "d" ["dock"] (NoArg D)
+ "Don't override redirect from WM and function as a dock"
+ , Option "a" ["alignsep"] (ReqArg AlignSep "alignsep")
+ "Separators for left, center and right text\nalignment. Default: '}{'"
+ , Option "s" ["sepchar"] (ReqArg SepChar "char")
+ ("The character used to separate commands in" ++
+ "\nthe output template. Default '%'")
+ , Option "t" ["template"] (ReqArg Template "template")
+ "The output template"
+ , Option "c" ["commands"] (ReqArg Commands "commands")
+ "The list of commands to be executed"
+ , Option "C" ["add-command"] (ReqArg AddCommand "command")
+ "Add to the list of commands to be executed"
+ , Option "x" ["screen"] (ReqArg OnScr "screen")
+ "On which X screen number to start"
+ , Option "p" ["position"] (ReqArg Position "position")
+ "Specify position of xmobar. Same syntax as in config file"
+ ]
+
+getOpts :: [String] -> IO ([Opts], [String])
+getOpts argv =
+ case getOpt Permute options argv of
+ (o,n,[]) -> return (o,n)
+ (_,_,errs) -> error (concat errs ++ usage)
+
+usage :: String
+usage = usageInfo header options ++ footer
+ where header = "Usage: xmobar [OPTION...] [FILE]\nOptions:"
+ footer = "\nMail bug reports and suggestions to " ++ mail ++ "\n"
+
+info :: String
+info = "xmobar " ++ showVersion version
+ ++ "\n (C) 2007 - 2010 Andrea Rossato "
+ ++ "\n (C) 2010 - 2018 Jose A Ortega Ruiz\n "
+ ++ mail ++ "\n" ++ license
+
+mail :: String
+mail = "<mail@jao.io>"
+
+license :: String
+license = "\nThis program is distributed in the hope that it will be useful," ++
+ "\nbut WITHOUT ANY WARRANTY; without even the implied warranty of" ++
+ "\nMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE." ++
+ "\nSee the License for more details."
+
+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
+ 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' opts = doOpts opts oo
+ readPosition string =
+ case readMaybe string of
+ Just x -> doOpts' (conf { position = x })
+ Nothing -> do
+ putStrLn "Can't parse position option, ignoring"
+ doOpts' conf