git-annex/Command/Fix.hs
Joey Hess 35145202d2 remove command type definitions
These were a mistake, they make the type signatures harder to read and
less flexible. The CommandSeek, CommandStart, CommandPerform, and
CommandCleanup types were a good idea, but composing them with the
parameters expected is going too far.
2011-09-15 16:50:49 -04:00

49 lines
1.1 KiB
Haskell

{- git-annex command
-
- Copyright 2010 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.Fix where
import Control.Monad.State (liftIO)
import System.Posix.Files
import System.Directory
import Command
import qualified AnnexQueue
import Utility.Path
import Utility.SafeCommand
import Content
import Messages
command :: [Command]
command = [repoCommand "fix" paramPaths seek
"fix up symlinks to point to annexed content"]
seek :: [CommandSeek]
seek = [withFilesInGit start]
{- Fixes the symlink to an annexed file. -}
start :: FilePath -> CommandStart
start file = isAnnexed file $ \(key, _) -> do
link <- calcGitLink file key
l <- liftIO $ readSymbolicLink file
if link == l
then stop
else do
showStart "fix" file
next $ perform file link
perform :: FilePath -> FilePath -> CommandPerform
perform file link = do
liftIO $ createDirectoryIfMissing True (parentDir file)
liftIO $ removeFile file
liftIO $ createSymbolicLink link file
next $ cleanup file
cleanup :: FilePath -> CommandCleanup
cleanup file = do
AnnexQueue.add "add" [Param "--"] [file]
return True