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|
----------------------------------------------------------------------------
-- |
-- Module : Main
-- Copyright : (c) Spencer Janssen 2007
-- License : BSD3-style (see LICENSE)
--
-- Maintainer : sjanssen@cse.unl.edu
-- Stability : unstable
-- Portability : not portable, uses mtl, X11, posix
--
-- xmonad, a minimalist, tiling window manager for X11
--
-----------------------------------------------------------------------------
module Main (main) where
import XMonad
import Control.Monad (unless)
import System.Info
import System.Environment
import System.Posix.Process (executeFile)
import System.Exit (exitFailure)
import Paths_xmonad (version)
import Data.Version (showVersion)
import Graphics.X11.Xinerama (compiledWithXinerama)
#ifdef TESTING
import qualified Properties
#endif
-- | The entry point into xmonad. Attempts to compile any custom main
-- for xmonad, and if it doesn't find one, just launches the default.
main :: IO ()
main = do
installSignalHandlers -- important to ignore SIGCHLD to avoid zombies
args <- getArgs
let launch = catchIO buildLaunch >> xmonad def
case args of
[] -> launch
("--resume":_) -> launch
["--help"] -> usage
["--recompile"] -> recompile True >>= flip unless exitFailure
["--replace"] -> launch
["--restart"] -> sendRestart >> return ()
["--version"] -> putStrLn $ unwords shortVersion
["--verbose-version"] -> putStrLn . unwords $ shortVersion ++ longVersion
#ifdef TESTING
("--run-tests":_) -> Properties.main
#endif
_ -> fail "unrecognized flags"
where
shortVersion = ["xmonad", showVersion version]
longVersion = [ "compiled by", compilerName, showVersion compilerVersion
, "for", arch ++ "-" ++ os
, "\nXinerama:", show compiledWithXinerama ]
usage :: IO ()
usage = do
self <- getProgName
putStr . unlines $
concat ["Usage: ", self, " [OPTION]"] :
"Options:" :
" --help Print this message" :
" --version Print the version number" :
" --recompile Recompile your ~/.xmonad/xmonad.hs" :
" --replace Replace the running window manager with xmonad" :
" --restart Request a running xmonad process to restart" :
#ifdef TESTING
" --run-tests Run the test suite" :
#endif
[]
-- | Build "~\/.xmonad\/xmonad.hs" with ghc, then execute it. If there are no
-- errors, this function does not return. An exception is raised in any of
-- these cases:
--
-- * ghc missing
--
-- * both "~\/.xmonad\/xmonad.hs" and "~\/.xmonad\/xmonad-$arch-$os" missing
--
-- * xmonad.hs fails to compile
--
-- ** wrong ghc in path (fails to compile)
--
-- ** type error, syntax error, ..
--
-- * Missing XMonad\/XMonadContrib modules due to ghc upgrade
--
buildLaunch :: IO ()
buildLaunch = do
recompile False
dir <- getXMonadDir
args <- getArgs
executeFile (dir ++ "/xmonad-"++arch++"-"++os) False args Nothing
return ()
sendRestart :: IO ()
sendRestart = do
dpy <- openDisplay ""
rw <- rootWindow dpy $ defaultScreen dpy
xmonad_restart <- internAtom dpy "XMONAD_RESTART" False
allocaXEvent $ \e -> do
setEventType e clientMessage
setClientMessageEvent e rw xmonad_restart 32 0 currentTime
sendEvent dpy rw False structureNotifyMask e
sync dpy False
|
