git-annex/Annex/CheckAttr.hs
2012-12-13 00:24:19 -04:00

35 lines
863 B
Haskell

{- git check-attr interface, with handle automatically stored in the Annex monad
-
- Copyright 2012 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Annex.CheckAttr (
checkAttr,
checkAttrHandle
) where
import Common.Annex
import qualified Git.CheckAttr as Git
import qualified Annex
{- All gitattributes used by git-annex. -}
annexAttrs :: [Git.Attr]
annexAttrs =
[ "annex.backend"
, "annex.numcopies"
]
checkAttr :: Git.Attr -> FilePath -> Annex String
checkAttr attr file = do
h <- checkAttrHandle
liftIO $ Git.checkAttr h attr file
checkAttrHandle :: Annex Git.CheckAttrHandle
checkAttrHandle = maybe startup return =<< Annex.getState Annex.checkattrhandle
where
startup = do
h <- inRepo $ Git.checkAttrStart annexAttrs
Annex.changeState $ \s -> s { Annex.checkattrhandle = Just h }
return h