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{- git hash-object interface
-
- Copyright 2011-2014 Joey Hess <id@joeyh.name>
-
- 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
import Utility.Tmp
type HashObjectHandle = CoProcess.CoProcessHandle
hashObjectStart :: Repo -> IO HashObjectHandle
hashObjectStart = CoProcess.rawMode <=< gitCoProcessStart True
[ Param "hash-object"
, Param "-w"
, Param "--stdin-paths"
, Param "--no-filters"
]
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 = hPutStrLn to =<< absPath file
receive from = getSha "hash-object" $ hGetLine from
{- Injects a blob into git. Unfortunately, the current git-hash-object
- interface does not allow batch hashing without using temp files. -}
hashBlob :: HashObjectHandle -> String -> IO Sha
hashBlob h s = withTmpFile "hash" $ \tmp tmph -> do
hPutStr tmph s
hClose tmph
hashFile h tmp
{- Injects some content into git, returning its Sha.
-
- Avoids using a tmp file, but runs a new hash-object command each
- time called. -}
hashObject :: ObjectType -> String -> Repo -> IO Sha
hashObject objtype content = hashObject' objtype (flip hPutStr content)
hashObject' :: ObjectType -> (Handle -> IO ()) -> Repo -> IO Sha
hashObject' objtype writer repo = getSha subcmd $
pipeWriteRead (map Param params) (Just writer) repo
where
subcmd = "hash-object"
params = [subcmd, "-t", show objtype, "-w", "--stdin", "--no-filters"]
|
