6659c7ec0e
Since git-annex unsets these when started, they have to be explicitly propigated. Also, this makes --git-dir and --work-tree settings be reflected in the environment. The need for this came up in https://github.com/DanielDent/git-annex-remote-rclone/issues/3
65 lines
2.1 KiB
Haskell
65 lines
2.1 KiB
Haskell
{- Adjusting the environment while running git commands.
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-
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- Copyright 2014-2016 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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{-# LANGUAGE CPP #-}
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module Git.Env where
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import Common
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import Git
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import Git.Types
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import Utility.Env
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{- Adjusts the gitEnv of a Repo. Copies the system environment if the repo
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- does not have any gitEnv yet. -}
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adjustGitEnv :: Repo -> ([(String, String)] -> [(String, String)]) -> IO Repo
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adjustGitEnv g adj = do
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e <- maybe copyenv return (gitEnv g)
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let e' = adj e
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return $ g { gitEnv = Just e' }
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where
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copyenv = do
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#ifdef __ANDROID__
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{- This should not be necessary on Android, but there is some
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- weird getEnvironment breakage. See
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- https://github.com/neurocyte/ghc-android/issues/7
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- Use getEnv to get some key environment variables that
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- git expects to have. -}
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let keyenv = words "USER PATH GIT_EXEC_PATH HOSTNAME HOME"
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let getEnvPair k = maybe Nothing (\v -> Just (k, v)) <$> getEnv k
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catMaybes <$> forM keyenv getEnvPair
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#else
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getEnvironment
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#endif
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addGitEnv :: Repo -> String -> String -> IO Repo
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addGitEnv g var val = adjustGitEnv g (addEntry var val)
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{- Environment variables to use when running a command.
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- Includes GIT_DIR pointing at the repo, and GIT_WORK_TREE when the repo
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- is not bare. Also includes anything added to the Repo's gitEnv,
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- and a copy of the rest of the system environment. -}
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propGitEnv :: Repo -> IO [(String, String)]
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propGitEnv g = do
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g' <- addGitEnv g "GIT_DIR" (localGitDir g)
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g'' <- maybe (pure g') (addGitEnv g' "GIT_WORK_TREE") (repoWorkTree g)
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return $ fromMaybe [] (gitEnv g'')
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{- Use with any action that makes a commit to set metadata. -}
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commitWithMetaData :: CommitMetaData -> CommitMetaData -> (Repo -> IO a) -> Repo -> IO a
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commitWithMetaData authormetadata committermetadata a g =
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a =<< adjustGitEnv g adj
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where
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adj = mkadj "AUTHOR" authormetadata
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. mkadj "COMMITTER" committermetadata
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mkadj p md = go "NAME" commitName
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. go "EMAIL" commitEmail
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. go "DATE" commitDate
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where
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go s getv = case getv md of
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Nothing -> id
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Just v -> addEntry ("GIT_" ++ p ++ "_" ++ s) v
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