git-annex/Config/GitConfig.hs
Joey Hess ed56dba868
annex.autocommit can be configured via git-annex config
... to control the default behavior in all clones of a repository.

This includes a new Configurable data type, so the GitConfig type indicates
which values can be configured this way.

The implementation should be quite efficient; the config log is only read
once, and only when a Configurable value has not already been set by
git-config.

Indeed, it would be nice in the future to extend this, so that git-config
is itself only read on demand. Some commands may not need to look at the
git configuration at all.

This commit was sponsored by Trenton Cronholm on Patreon.
2017-02-03 13:58:53 -04:00

36 lines
1 KiB
Haskell

{- git-annex configuration
-
- Copyright 2017 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Config.GitConfig where
import Annex.Common
import qualified Annex
import Types.GitConfig
import Git.Types
import Logs.Config
{- Gets a specific setting from GitConfig. If necessary, loads the
- repository-global defaults when the GitConfig does not yet
- have a value. -}
getGitConfigVal :: (GitConfig -> Configurable a) -> Annex a
getGitConfigVal f = do
v <- f <$> Annex.getGitConfig
case v of
HasConfig c -> return c
DefaultConfig _ -> do
r <- Annex.gitRepo
m <- loadGlobalConfig
let globalgc = extractGitConfig (r { config = m })
-- This merge of the repo-global config and the git
-- config makes all repository-global default
-- values populate the GitConfig with HasConfig
-- values, so it will only need to be done once.
Annex.changeGitConfig (\gc -> mergeGitConfig gc globalgc)
v' <- f <$> Annex.getGitConfig
case v' of
HasConfig c -> return c
DefaultConfig d -> return d