git-annex/Config.hs
Joey Hess 4510819215 v5 for direct mode, with automatic upgrade
This includes storing the current state of the HEAD ref, which git annex
sync is going to need, but does not make sync use it.
2013-11-05 17:05:03 -04:00

88 lines
3 KiB
Haskell

{- Git configuration
-
- Copyright 2011-2012 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Config where
import Common.Annex
import qualified Git
import qualified Git.Config
import qualified Git.Command
import qualified Annex
import qualified Types.Remote as Remote
import Config.Cost
type UnqualifiedConfigKey = String
data ConfigKey = ConfigKey String
instance Show ConfigKey where
show (ConfigKey s) = s
{- Looks up a setting in git config. -}
getConfig :: ConfigKey -> String -> Annex String
getConfig (ConfigKey key) def = fromRepo $ Git.Config.get key def
getConfigMaybe :: ConfigKey -> Annex (Maybe String)
getConfigMaybe (ConfigKey key) = fromRepo $ Git.Config.getMaybe key
{- Changes a git config setting in both internal state and .git/config -}
setConfig :: ConfigKey -> String -> Annex ()
setConfig (ConfigKey key) value = do
inRepo $ Git.Command.run [Param "config", Param key, Param value]
Annex.changeGitRepo =<< inRepo Git.Config.reRead
{- Unsets a git config setting. (Leaves it in state currently.) -}
unsetConfig :: ConfigKey -> Annex ()
unsetConfig ck@(ConfigKey key) = ifM (isJust <$> getConfigMaybe ck)
( inRepo $ Git.Command.run
[Param "config", Param "--unset", Param key]
, noop -- avoid unsetting something not set; that would fail
)
{- A per-remote config setting in git config. -}
remoteConfig :: Git.Repo -> UnqualifiedConfigKey -> ConfigKey
remoteConfig r key = ConfigKey $
"remote." ++ fromMaybe "" (Git.remoteName r) ++ ".annex-" ++ key
{- A global annex setting in git config. -}
annexConfig :: UnqualifiedConfigKey -> ConfigKey
annexConfig key = ConfigKey $ "annex." ++ key
{- Calculates cost for a remote. Either the specific default, or as configured
- by remote.<name>.annex-cost, or if remote.<name>.annex-cost-command
- is set and prints a number, that is used. -}
remoteCost :: RemoteGitConfig -> Cost -> Annex Cost
remoteCost c def = case remoteAnnexCostCommand c of
Just cmd | not (null cmd) -> liftIO $
(fromMaybe def . readish) <$>
readProcess "sh" ["-c", cmd]
_ -> return $ fromMaybe def $ remoteAnnexCost c
setRemoteCost :: Remote -> Cost -> Annex ()
setRemoteCost r c = setConfig (remoteConfig (Remote.repo r) "cost") (show c)
getNumCopies :: Maybe Int -> Annex Int
getNumCopies (Just v) = return v
getNumCopies Nothing = annexNumCopies <$> Annex.getGitConfig
isDirect :: Annex Bool
isDirect = annexDirect <$> Annex.getGitConfig
crippledFileSystem :: Annex Bool
crippledFileSystem = annexCrippledFileSystem <$> Annex.getGitConfig
setCrippledFileSystem :: Bool -> Annex ()
setCrippledFileSystem b = do
setConfig (annexConfig "crippledfilesystem") (Git.Config.boolConfig b)
Annex.changeGitConfig $ \c -> c { annexCrippledFileSystem = b }
{- Gets the http headers to use. -}
getHttpHeaders :: Annex [String]
getHttpHeaders = do
v <- annexHttpHeadersCommand <$> Annex.getGitConfig
case v of
Just cmd -> lines <$> liftIO (readProcess "sh" ["-c", cmd])
Nothing -> annexHttpHeaders <$> Annex.getGitConfig