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{- git-annex git hooks
-
- Note that it's important that the scripts installed by git-annex
- not change, otherwise removing old hooks using an old version of
- the script would fail.
-
- Copyright 2013-2014 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Annex.Hook where
import Common.Annex
import qualified Git.Hook as Git
import Config
import qualified Annex
import Utility.Shell
import Utility.FileMode
import qualified Data.Map as M
preCommitHook :: Git.Hook
preCommitHook = Git.Hook "pre-commit" (mkHookScript "git annex pre-commit .")
preCommitAnnexHook :: Git.Hook
preCommitAnnexHook = Git.Hook "pre-commit-annex" ""
mkHookScript :: String -> String
mkHookScript s = unlines
[ shebang_local
, "# automatically configured by git-annex"
, s
]
hookWrite :: Git.Hook -> Annex ()
hookWrite h =
-- cannot have git hooks in a crippled filesystem (no execute bit)
unlessM crippledFileSystem $
unlessM (inRepo $ Git.hookWrite h) $
hookWarning h "already exists, not configuring"
hookUnWrite :: Git.Hook -> Annex ()
hookUnWrite h = unlessM (inRepo $ Git.hookUnWrite h) $
hookWarning h "contents modified; not deleting. Edit it to remove call to git annex."
hookWarning :: Git.Hook -> String -> Annex ()
hookWarning h msg = do
r <- gitRepo
warning $ Git.hookName h ++ " hook (" ++ Git.hookFile h r ++ ") " ++ msg
{- Runs a hook. To avoid checking if the hook exists every time,
- the existing hooks are cached. -}
runAnnexHook :: Git.Hook -> Annex ()
runAnnexHook hook = do
cmd <- fromRepo $ Git.hookFile hook
m <- Annex.getState Annex.existinghooks
case M.lookup hook m of
Just True -> run cmd
Just False -> noop
Nothing -> do
exists <- hookexists cmd
Annex.changeState $ \s -> s
{ Annex.existinghooks = M.insert hook exists m }
when exists $
run cmd
where
hookexists f = liftIO $ catchBoolIO $
isExecutable . fileMode <$> getFileStatus f
run cmd = unlessM (liftIO $ boolSystem cmd []) $
warning $ cmd ++ " failed"
|
