summaryrefslogtreecommitdiff
path: root/Git/HashObject.hs
blob: b4a32ef1cd2e00ca179cbd49a96ea4a2d6090969 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
{- 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 = gitCoProcessStart
	[ 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 :: ObjectType -> String -> Repo -> IO Sha
hashObject objtype content repo = getSha subcmd $ do
	s <- pipeWriteRead (map Param params) content repo
	return s
  where
	subcmd = "hash-object"
	params = [subcmd, "-t", show objtype, "-w", "--stdin"]