blob: e439c4665bf0ca8a11426872c6c880d963d755b0 (
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
46
47
48
|
{- git-union-merge program
-
- Copyright 2011 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
import System.Environment
import Common
import qualified Git.UnionMerge
import qualified Git.Config
import qualified Git.Construct
import qualified Git.Branch
import qualified Git.Index
import qualified Git
header :: String
header = "Usage: git-union-merge ref ref newref"
usage :: IO a
usage = error $ "bad parameters\n\n" ++ header
tmpIndex :: Git.Repo -> FilePath
tmpIndex g = Git.gitDir g </> "index.git-union-merge"
setup :: Git.Repo -> IO ()
setup = cleanup -- idempotency
cleanup :: Git.Repo -> IO ()
cleanup g = whenM (doesFileExist $ tmpIndex g) $ removeFile $ tmpIndex g
parseArgs :: IO [String]
parseArgs = do
args <- getArgs
if length args /= 3
then usage
else return args
main :: IO ()
main = do
[aref, bref, newref] <- map Git.Ref <$> parseArgs
g <- Git.Config.read =<< Git.Construct.fromCwd
_ <- Git.Index.override $ tmpIndex g
setup g
Git.UnionMerge.merge aref bref g
_ <- Git.Branch.commit "union merge" newref [aref, bref] g
cleanup g
|
