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|
{- git merging
-
- Copyright 2012-2016 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Git.Merge (
MergeConfig(..),
CommitMode(..),
merge,
merge',
stageMerge,
) where
import Common
import Git
import Git.Command
import Git.BuildVersion
import Git.Branch (CommitMode(..))
import Git.Env
data MergeConfig
= MergeNonInteractive
-- ^ avoids recent git's interactive merge
| MergeUnrelatedHistories
-- ^ avoids recent git's prevention of merging unrelated histories
deriving (Eq)
merge :: Ref -> [MergeConfig] -> CommitMode -> Repo -> IO Bool
merge = merge' []
merge' :: [CommandParam] -> Ref -> [MergeConfig] -> CommitMode -> Repo -> IO Bool
merge' extraparams branch mergeconfig commitmode r
| MergeNonInteractive `notElem` mergeconfig || older "1.7.7.6" =
go [Param $ fromRef branch]
| otherwise = go [Param "--no-edit", Param $ fromRef branch]
where
go ps = runBool (sp ++ [Param "merge"] ++ ps ++ extraparams)
=<< cfgRepo mergeconfig r
sp
| commitmode == AutomaticCommit =
[Param "-c", Param "commit.gpgsign=false"]
| otherwise = []
{- Stage the merge into the index, but do not commit it.-}
stageMerge :: Ref -> [MergeConfig] -> Repo -> IO Bool
stageMerge branch mergeconfig r = runBool
[ Param "merge"
, Param "--quiet"
, Param "--no-commit"
-- Without this, a fast-forward merge is done, since it involves no
-- commit.
, Param "--no-ff"
, Param $ fromRef branch
] =<< cfgRepo mergeconfig r
cfgRepo :: [MergeConfig] -> Repo -> IO Repo
cfgRepo mergeconfig r
| MergeUnrelatedHistories `elem` mergeconfig =
addGitEnv r "GIT_MERGE_ALLOW_UNRELATED_HISTORIES" "1"
| otherwise = return r
|
