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+{- git cat-file interface, with handle automatically stored in the Annex monad
+ -
+ - Copyright 2011 Joey Hess <joey@kitenet.net>
+ -
+ - Licensed under the GNU GPL version 3 or higher.
+ -}
+
+module Annex.CatFile (
+ catFile
+) where
+
+import Annex.Common
+import qualified Git.CatFile
+import qualified Annex
+
+catFile :: String -> FilePath -> Annex String
+catFile branch file = maybe startup go =<< Annex.getState Annex.catfilehandle
+ where
+ startup = do
+ g <- gitRepo
+ h <- liftIO $ Git.CatFile.catFileStart g
+ Annex.changeState $ \s -> s { Annex.catfilehandle = Just h }
+ go h
+ go h = liftIO $ Git.CatFile.catFile h branch file