git-annex/git-annex.hs
2014-02-14 14:22:57 -04:00

76 lines
1.8 KiB
Haskell

{- git-annex main program dispatch
-
- Copyright 2010-2014 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
{-# LANGUAGE CPP #-}
import System.Environment (getArgs, getProgName)
import System.FilePath
import qualified CmdLine.GitAnnex
import qualified CmdLine.GitAnnexShell
#ifdef WITH_TESTSUITE
import qualified Test
#endif
#ifdef mingw32_HOST_OS
import Utility.UserInfo
import Utility.Env
import Config.Files
import System.Process
import System.Exit
#endif
main :: IO ()
main = do
ps <- getArgs
run ps =<< getProgName
where
run ps n
| isshell n = CmdLine.GitAnnexShell.run ps
| otherwise =
#ifdef mingw32_HOST_OS
winEnv gitannex ps
#else
gitannex ps
#endif
gitannex ps =
#ifdef WITH_TESTSUITE
case ps of
("test":ps') -> Test.main ps'
_ -> CmdLine.GitAnnex.run ps
#else
CmdLine.GitAnnex.run ps
#endif
isshell n = takeFileName n == "git-annex-shell"
#ifdef mingw32_HOST_OS
{- On Windows, if HOME is not set, probe it and set it, re-execing
- git-annex with the new environment.
-
- This is a workaround for some Cygwin commands needing HOME to be set,
- and for there being no known way to set environment variables on
- Windows, except by passing an environment in each call to a program.
- While ugly, this workaround is easier than trying to ensure HOME is set
- in all calls to the affected programs.
-}
winEnv :: ([String] -> IO ()) -> [String] -> IO ()
winEnv a ps = go =<< getEnv "HOME"
where
go (Just _) = a ps
go Nothing = do
home <- myHomeDir
putStrLn $ "** Windows hack; overrideing HOME to " ++ home
e <- getEnvironment
let eoverride =
[ ("HOME", home)
, ("CYGWIN", "nodosfilewarning")
]
cmd <- readProgramFile
(_, _, _, pid) <- createProcess (proc cmd ps)
{ env = Just $ e ++ eoverride }
exitWith =<< waitForProcess pid
#endif