66 lines
1.7 KiB
Haskell
66 lines
1.7 KiB
Haskell
{- git merging
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-
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- Copyright 2012-2016 Joey Hess <id@joeyh.name>
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-
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- Licensed under the GNU GPL version 3 or higher.
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-}
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module Git.Merge (
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MergeConfig(..),
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CommitMode(..),
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merge,
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merge',
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stageMerge,
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) where
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import Common
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import Git
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import Git.Command
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import qualified Git.BuildVersion
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import qualified Git.Version
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import Git.Branch (CommitMode(..))
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data MergeConfig
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= MergeNonInteractive
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-- ^ avoids recent git's interactive merge
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| MergeUnrelatedHistories
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-- ^ avoids recent git's prevention of merging unrelated histories
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deriving (Eq)
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merge :: Ref -> [MergeConfig] -> CommitMode -> Repo -> IO Bool
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merge = merge' []
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merge' :: [CommandParam] -> Ref -> [MergeConfig] -> CommitMode -> Repo -> IO Bool
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merge' extraparams branch mergeconfig commitmode r
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| MergeNonInteractive `notElem` mergeconfig || Git.BuildVersion.older "1.7.7.6" =
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go [Param $ fromRef branch]
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| otherwise = go [Param "--no-edit", Param $ fromRef branch]
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where
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go ps = merge'' (sp ++ [Param "merge"] ++ ps ++ extraparams) mergeconfig r
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sp
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| commitmode == AutomaticCommit =
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[Param "-c", Param "commit.gpgsign=false"]
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| otherwise = []
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merge'' :: [CommandParam] -> [MergeConfig] -> Repo -> IO Bool
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merge'' ps mergeconfig r
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| MergeUnrelatedHistories `elem` mergeconfig =
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ifM (Git.Version.older "2.9.0")
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( go ps
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, go (ps ++ [Param "--allow-unrelated-histories"])
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)
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| otherwise = go ps
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where
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go ps' = runBool ps' r
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{- Stage the merge into the index, but do not commit it.-}
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stageMerge :: Ref -> [MergeConfig] -> Repo -> IO Bool
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stageMerge branch = merge''
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[ Param "merge"
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, Param "--quiet"
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, Param "--no-commit"
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-- Without this, a fast-forward merge is done, since it involves no
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-- commit.
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, Param "--no-ff"
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, Param $ fromRef branch
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]
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