git-annex/Command/PreCommit.hs
Joey Hess f97c783283 clean up check selection code
This new approach allows filtering out checks from the default set that are
not appropriate for a command, rather than having to list every check
that is appropriate. It also reduces some boilerplate.

Haskell does not define Eq for functions, so I had to go a long way around
with each check having a unique id. Meh.
2011-10-29 15:19:05 -04:00

32 lines
864 B
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 Command
import qualified Command.Add
import qualified Command.Fix
import Backend
def :: [Command]
def = [command "pre-commit" paramPaths 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 :: BackendFile -> CommandStart
start p = next $ perform p
perform :: BackendFile -> CommandPerform
perform pair@(_, file) = do
ok <- doCommand $ Command.Add.start pair
if ok
then next $ return True
else error $ "failed to add " ++ file ++ "; canceling commit"