fa3045aa8b
Option parsing for commands that run outside git repos is still screwy, as there is no Annex monad and so the flags cannot be passed in. But, any remaining parameters can be, which is enough for this fix.
135 lines
4.3 KiB
Haskell
135 lines
4.3 KiB
Haskell
{- git-annex command line parsing and dispatch
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-
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- Copyright 2010-2012 Joey Hess <joey@kitenet.net>
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-
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- Licensed under the GNU GPL version 3 or higher.
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-}
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{-# LANGUAGE CPP #-}
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module CmdLine (
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dispatch,
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usage,
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shutdown
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) where
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import qualified Control.Exception as E
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import qualified Data.Map as M
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import Control.Exception (throw)
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import System.Console.GetOpt
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#ifndef mingw32_HOST_OS
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import System.Posix.Signals
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#endif
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import Common.Annex
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import qualified Annex
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import qualified Annex.Queue
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import qualified Git
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import qualified Git.AutoCorrect
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import Annex.Content
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import Annex.Ssh
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import Annex.Environment
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import Command
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import Types.Messages
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{- Runs the passed command line. -}
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dispatch :: Bool -> CmdParams -> [Command] -> [Option] -> [(String, String)] -> String -> IO Git.Repo -> IO ()
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dispatch fuzzyok allargs allcmds commonoptions fields header getgitrepo = do
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setupConsole
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r <- E.try getgitrepo :: IO (Either E.SomeException Git.Repo)
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case r of
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Left e -> maybe (throw e) (\a -> a params) (cmdnorepo cmd)
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Right g -> do
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state <- Annex.new g
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(actions, state') <- Annex.run state $ do
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checkEnvironment
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checkfuzzy
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forM_ fields $ uncurry Annex.setField
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when (cmdnomessages cmd) $
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Annex.setOutput QuietOutput
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sequence_ flags
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whenM (annexDebug <$> Annex.getGitConfig) $
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liftIO enableDebugOutput
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prepCommand cmd params
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tryRun state' cmd $ [startup] ++ actions ++ [shutdown $ cmdnocommit cmd]
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where
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err msg = msg ++ "\n\n" ++ usage header allcmds
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cmd = Prelude.head cmds
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(fuzzy, cmds, name, args) = findCmd fuzzyok allargs allcmds err
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(flags, params) = getOptCmd args cmd commonoptions
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checkfuzzy = when fuzzy $
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inRepo $ Git.AutoCorrect.prepare name cmdname cmds
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{- Parses command line params far enough to find the Command to run, and
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- returns the remaining params.
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- Does fuzzy matching if necessary, which may result in multiple Commands. -}
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findCmd :: Bool -> CmdParams -> [Command] -> (String -> String) -> (Bool, [Command], String, CmdParams)
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findCmd fuzzyok argv cmds err
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| isNothing name = error $ err "missing command"
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| not (null exactcmds) = (False, exactcmds, fromJust name, args)
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| fuzzyok && not (null inexactcmds) = (True, inexactcmds, fromJust name, args)
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| otherwise = error $ err $ "unknown command " ++ fromJust name
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where
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(name, args) = findname argv []
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findname [] c = (Nothing, reverse c)
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findname (a:as) c
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| "-" `isPrefixOf` a = findname as (a:c)
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| otherwise = (Just a, reverse c ++ as)
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exactcmds = filter (\c -> name == Just (cmdname c)) cmds
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inexactcmds = case name of
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Nothing -> []
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Just n -> Git.AutoCorrect.fuzzymatches n cmdname cmds
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{- Parses command line options, and returns actions to run to configure flags
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- and the remaining parameters for the command. -}
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getOptCmd :: CmdParams -> Command -> [Option] -> ([Annex ()], CmdParams)
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getOptCmd argv cmd commonoptions = check $
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getOpt Permute (commonoptions ++ cmdoptions cmd) argv
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where
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check (flags, rest, []) = (flags, rest)
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check (_, _, errs) = error $ unlines
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[ concat errs
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, commandUsage cmd
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]
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{- Runs a list of Annex actions. Catches IO errors and continues
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- (but explicitly thrown errors terminate the whole command).
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-}
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tryRun :: Annex.AnnexState -> Command -> [CommandCleanup] -> IO ()
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tryRun = tryRun' 0
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tryRun' :: Integer -> Annex.AnnexState -> Command -> [CommandCleanup] -> IO ()
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tryRun' errnum _ cmd []
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| errnum > 0 = error $ cmdname cmd ++ ": " ++ show errnum ++ " failed"
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| otherwise = noop
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tryRun' errnum state cmd (a:as) = do
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r <- run
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handle $! r
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where
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run = tryIO $ Annex.run state $ do
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Annex.Queue.flushWhenFull
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a
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handle (Left err) = showerr err >> cont False state
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handle (Right (success, state')) = cont success state'
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cont success s = do
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let errnum' = if success then errnum else errnum + 1
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(tryRun' $! errnum') s cmd as
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showerr err = Annex.eval state $ do
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showErr err
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showEndFail
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{- Actions to perform each time ran. -}
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startup :: Annex Bool
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startup = liftIO $ do
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#ifndef mingw32_HOST_OS
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void $ installHandler sigINT Default Nothing
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#endif
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return True
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{- Cleanup actions. -}
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shutdown :: Bool -> Annex Bool
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shutdown nocommit = do
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saveState nocommit
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sequence_ =<< M.elems <$> Annex.getState Annex.cleanup
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liftIO reapZombies -- zombies from long-running git processes
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sshCleanup -- ssh connection caching
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return True
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