113 lines
3.5 KiB
Haskell
113 lines
3.5 KiB
Haskell
{- git-annex command line parsing and dispatch
|
||
-
|
||
- Copyright 2010-2012 Joey Hess <id@joeyh.name>
|
||
-
|
||
- Licensed under the GNU GPL version 3 or higher.
|
||
-}
|
||
|
||
{-# LANGUAGE CPP #-}
|
||
|
||
module CmdLine (
|
||
dispatch,
|
||
usage,
|
||
shutdown
|
||
) where
|
||
|
||
import qualified Control.Exception as E
|
||
import qualified Data.Map as M
|
||
import Control.Exception (throw)
|
||
import System.Console.GetOpt
|
||
#ifndef mingw32_HOST_OS
|
||
import System.Posix.Signals
|
||
#endif
|
||
|
||
import Common.Annex
|
||
import qualified Annex
|
||
import qualified Git
|
||
import qualified Git.AutoCorrect
|
||
import qualified Git.Config
|
||
import Annex.Content
|
||
import Annex.Environment
|
||
import Command
|
||
import Types.Messages
|
||
|
||
{- Runs the passed command line. -}
|
||
dispatch :: Bool -> CmdParams -> [Command] -> [Option] -> [(String, String)] -> String -> IO Git.Repo -> IO ()
|
||
dispatch fuzzyok allargs allcmds commonoptions fields header getgitrepo = do
|
||
setupConsole
|
||
case getOptCmd args cmd commonoptions of
|
||
Right (flags, params) -> go flags params
|
||
=<< (E.try getgitrepo :: IO (Either E.SomeException Git.Repo))
|
||
Left parseerr -> error parseerr
|
||
where
|
||
go flags params (Right g) = do
|
||
state <- Annex.new g
|
||
Annex.eval state $ do
|
||
checkEnvironment
|
||
when fuzzy $
|
||
inRepo $ autocorrect . Just
|
||
forM_ fields $ uncurry Annex.setField
|
||
when (cmdnomessages cmd) $
|
||
Annex.setOutput QuietOutput
|
||
sequence_ flags
|
||
whenM (annexDebug <$> Annex.getGitConfig) $
|
||
liftIO enableDebugOutput
|
||
startup
|
||
performCommandAction cmd params $
|
||
shutdown $ cmdnocommit cmd
|
||
go _flags params (Left e) = do
|
||
when fuzzy $
|
||
autocorrect =<< Git.Config.global
|
||
maybe (throw e) (\a -> a params) (cmdnorepo cmd)
|
||
err msg = msg ++ "\n\n" ++ usage header allcmds
|
||
cmd = Prelude.head cmds
|
||
(fuzzy, cmds, name, args) = findCmd fuzzyok allargs allcmds err
|
||
autocorrect = Git.AutoCorrect.prepare name cmdname cmds
|
||
|
||
{- Parses command line params far enough to find the Command to run, and
|
||
- returns the remaining params.
|
||
- Does fuzzy matching if necessary, which may result in multiple Commands. -}
|
||
findCmd :: Bool -> CmdParams -> [Command] -> (String -> String) -> (Bool, [Command], String, CmdParams)
|
||
findCmd fuzzyok argv cmds err
|
||
| isNothing name = error $ err "missing command"
|
||
| not (null exactcmds) = (False, exactcmds, fromJust name, args)
|
||
| fuzzyok && not (null inexactcmds) = (True, inexactcmds, fromJust name, args)
|
||
| otherwise = error $ err $ "unknown command " ++ fromJust name
|
||
where
|
||
(name, args) = findname argv []
|
||
findname [] c = (Nothing, reverse c)
|
||
findname (a:as) c
|
||
| "-" `isPrefixOf` a = findname as (a:c)
|
||
| otherwise = (Just a, reverse c ++ as)
|
||
exactcmds = filter (\c -> name == Just (cmdname c)) cmds
|
||
inexactcmds = case name of
|
||
Nothing -> []
|
||
Just n -> Git.AutoCorrect.fuzzymatches n cmdname cmds
|
||
|
||
{- Parses command line options, and returns actions to run to configure flags
|
||
- and the remaining parameters for the command. -}
|
||
getOptCmd :: CmdParams -> Command -> [Option] -> Either String ([Annex ()], CmdParams)
|
||
getOptCmd argv cmd commonoptions = check $
|
||
getOpt Permute (commonoptions ++ cmdoptions cmd) argv
|
||
where
|
||
check (flags, rest, []) = Right (flags, rest)
|
||
check (_, _, errs) = Left $ unlines
|
||
[ concat errs
|
||
, commandUsage cmd
|
||
]
|
||
|
||
{- Actions to perform each time ran. -}
|
||
startup :: Annex ()
|
||
startup =
|
||
#ifndef mingw32_HOST_OS
|
||
liftIO $ void $ installHandler sigINT Default Nothing
|
||
#else
|
||
return ()
|
||
#endif
|
||
|
||
{- Cleanup actions. -}
|
||
shutdown :: Bool -> Annex ()
|
||
shutdown nocommit = do
|
||
saveState nocommit
|
||
sequence_ =<< M.elems <$> Annex.getState Annex.cleanup
|
||
liftIO reapZombies -- zombies from long-running git processes
|