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|
{- Adjusting the environment while running git commands.
-
- Copyright 2014-2016 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
{-# LANGUAGE CPP #-}
module Git.Env where
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 copyenv return (gitEnv g)
let e' = adj e
return $ g { gitEnv = Just e' }
where
copyenv = do
#ifdef __ANDROID__
{- This should not be necessary on Android, but there is some
- weird getEnvironment breakage. See
- https://github.com/neurocyte/ghc-android/issues/7
- Use getEnv to get some key environment variables that
- git expects to have. -}
let keyenv = words "USER PATH GIT_EXEC_PATH HOSTNAME HOME"
let getEnvPair k = maybe Nothing (\v -> Just (k, v)) <$> getEnv k
catMaybes <$> forM keyenv getEnvPair
#else
getEnvironment
#endif
addGitEnv :: Repo -> String -> String -> IO Repo
addGitEnv g var val = adjustGitEnv g (addEntry var val)
{- 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
|
