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{- git hash-object interface
-
- Copyright 2011-2012 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Git.HashObject where
import Common
import Git
import Git.Sha
import Git.Command
import Git.Types
import qualified Utility.CoProcess as CoProcess
type HashObjectHandle = CoProcess.CoProcessHandle
hashObjectStart :: Repo -> IO HashObjectHandle
hashObjectStart = CoProcess.start "git" . toCommand . gitCommandLine
[ Param "hash-object"
, Param "-w"
, Param "--stdin-paths"
]
hashObjectStop :: HashObjectHandle -> IO ()
hashObjectStop = CoProcess.stop
{- Injects a file into git, returning the Sha of the object. -}
hashFile :: HashObjectHandle -> FilePath -> IO Sha
hashFile h file = CoProcess.query h send receive
where
send to = do
fileEncoding to
hPutStrLn to file
receive from = getSha "hash-object" $ hGetLine from
{- Injects some content into git, returning its Sha. -}
hashObject :: Repo -> ObjectType -> String -> IO Sha
hashObject repo objtype content = getSha subcmd $ do
(h, s) <- pipeWriteRead (map Param params) content repo
length s `seq` do
forceSuccess h
reap -- XXX unsure why this is needed
return s
where
subcmd = "hash-object"
params = [subcmd, "-t", show objtype, "-w", "--stdin"]
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