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|
{- Adjusting the environment while running git commands.
-
- Copyright 2014-2016 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
module Git.Env where
import Common
import Git
import Git.Types
import Utility.Env
{- Adjusts the gitEnv of a Repo. Copies the system environment if the repo
- does not have any gitEnv yet. -}
adjustGitEnv :: Repo -> ([(String, String)] -> [(String, String)]) -> IO Repo
adjustGitEnv g adj = do
e <- maybe getEnvironment return (gitEnv g)
let e' = adj e
return $ g { gitEnv = Just e' }
where
addGitEnv :: Repo -> String -> String -> IO Repo
addGitEnv g var val = adjustGitEnv g (addEntry var val)
{- Environment variables to use when running a command.
- Includes GIT_DIR pointing at the repo, and GIT_WORK_TREE when the repo
- is not bare. Also includes anything added to the Repo's gitEnv,
- and a copy of the rest of the system environment. -}
propGitEnv :: Repo -> IO [(String, String)]
propGitEnv g = do
g' <- addGitEnv g "GIT_DIR" (fromRawFilePath (localGitDir g))
g'' <- maybe (pure g')
(addGitEnv g' "GIT_WORK_TREE" . fromRawFilePath)
(repoWorkTree g)
return $ fromMaybe [] (gitEnv g'')
{- Use with any action that makes a commit to set metadata. -}
commitWithMetaData :: CommitMetaData -> CommitMetaData -> (Repo -> IO a) -> Repo -> IO a
commitWithMetaData authormetadata committermetadata a g =
a =<< adjustGitEnv g adj
where
adj = mkadj "AUTHOR" authormetadata
. mkadj "COMMITTER" committermetadata
mkadj p md = go "NAME" commitName
. go "EMAIL" commitEmail
. go "DATE" commitDate
where
go s getv = case getv md of
Nothing -> id
Just v -> addEntry ("GIT_" ++ p ++ "_" ++ s) v
|
