Sped up git-annex add in direct mode and v6 by using git hash-object --batch.

Speeds up hashSymlink and hashPointerFile.

Annex/HashObject.hs

@@ -12,38 +12,31 @@ module Annex.HashObject (
 	hashObjectStop,
 ) where
 
-import qualified Data.ByteString.Lazy as L
-import qualified Data.Map as M
-import System.PosixCompat.Types
-
 import Annex.Common
-import qualified Git
 import qualified Git.HashObject
 import qualified Annex
 import Git.Types
-import Git.FilePath
-import qualified Git.Ref
-import Annex.Link
 
 hashObjectHandle :: Annex Git.HashObject.HashObjectHandle
 hashObjectHandle = maybe startup return =<< Annex.getState Annex.hashobjecthandle
   where
 	startup = do
-		inRepo $ Git.hashObjectStart
+		h <- inRepo $ Git.HashObject.hashObjectStart
 		Annex.changeState $ \s -> s { Annex.hashobjecthandle = Just h }
 		return h
 
 hashObjectStop :: Annex ()
-hashObjectStop = maybe noop stop =<< Annex.hashobjecthandle
+hashObjectStop = maybe noop stop =<< Annex.getState Annex.hashobjecthandle
   where
 	stop h = do
-		liftIO $ Git.hashObjectStop h
+		liftIO $ Git.HashObject.hashObjectStop h
 		Annex.changeState $ \s -> s { Annex.hashobjecthandle = Nothing }
+		return ()
 
 hashFile :: FilePath -> Annex Sha
 hashFile f = do
 	h <- hashObjectHandle
-	Git.HashObject.hashFile h f
+	liftIO $ Git.HashObject.hashFile h f
 
 {- Note that the content will be written to a temp file.
  - So it may be faster to use Git.HashObject.hashObject for large
@@ -51,4 +44,4 @@ hashFile f = do
 hashBlob :: String -> Annex Sha
 hashBlob content = do
 	h <- hashObjectHandle
-	Git.HashObject.hashFile h content
+	liftIO $ Git.HashObject.hashBlob h content