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{- git-annex environment
-
- Copyright 2012, 2013 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
{-# LANGUAGE CPP #-}
module Annex.Environment where
import Annex.Common
import Utility.UserInfo
import qualified Git.Config
import Config
import Utility.Env.Set
{- Checks that the system's environment allows git to function.
- Git requires a GECOS username, or suitable git configuration, or
- environment variables.
-
- Git also requires the system have a hostname containing a dot.
- Otherwise, it tries various methods to find a FQDN, and will fail if it
- does not. To avoid replicating that code here, which would break if its
- methods change, this function does not check the hostname is valid.
- Instead, code that commits can use ensureCommit.
-}
checkEnvironment :: Annex ()
checkEnvironment = do
gitusername <- fromRepo $ Git.Config.getMaybe "user.name"
when (isNothing gitusername || gitusername == Just "") $
liftIO checkEnvironmentIO
checkEnvironmentIO :: IO ()
checkEnvironmentIO = whenM (isNothing <$> myUserGecos) $ do
username <- either (const "unknown") id <$> myUserName
ensureEnv "GIT_AUTHOR_NAME" username
ensureEnv "GIT_COMMITTER_NAME" username
where
#ifndef __ANDROID__
-- existing environment is not overwritten
ensureEnv var val = setEnv var val False
#else
-- Environment setting is broken on Android, so this is dealt with
-- in runshell instead.
ensureEnv _ _ = noop
#endif
{- Runs an action that commits to the repository, and if it fails,
- sets user.email and user.name to a dummy value and tries the action again. -}
ensureCommit :: Annex a -> Annex a
ensureCommit a = either retry return =<< tryNonAsync a
where
retry _ = do
name <- liftIO $ either (const "unknown") id <$> myUserName
setConfig (ConfigKey "user.name") name
setConfig (ConfigKey "user.email") name
a
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