git-annex/Command/PreCommit.hs

45 lines
1.2 KiB
Haskell

{- git-annex command
-
- Copyright 2010 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.PreCommit where
import Control.Monad.State (liftIO)
import Command
import qualified Annex
import qualified GitRepo as Git
import qualified Command.Add
import qualified Command.Fix
command :: [Command]
command = [Command "pre-commit" paramPath seek "run by git pre-commit hook"]
{- The pre-commit hook needs to fix symlinks to all files being committed.
- And, it needs to inject unlocked files into the annex. -}
seek :: [CommandSeek]
seek = [withFilesToBeCommitted Command.Fix.start,
withFilesUnlockedToBeCommitted start]
start :: CommandStartBackendFile
start pair = return $ Just $ perform pair
perform :: BackendFile -> CommandPerform
perform pair@(file, _) = do
ok <- doCommand $ Command.Add.start pair
if ok
then return $ Just $ cleanup file
else error $ "failed to add " ++ file ++ "; canceling commit"
cleanup :: FilePath -> CommandCleanup
cleanup file = do
-- git commit will have staged the file's content;
-- drop that and run command queued by Add.state to
-- stage the symlink
g <- Annex.gitRepo
liftIO $ Git.run g ["reset", "-q", "--", file]
Annex.queueRun
return True