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|
{- git-annex repository-global config log
-
- Copyright 2017-2019 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Logs.Config (
ConfigName,
ConfigValue,
setGlobalConfig,
unsetGlobalConfig,
getGlobalConfig,
loadGlobalConfig,
) where
import Annex.Common
import Logs
import Logs.MapLog
import qualified Annex.Branch
import qualified Data.Map as M
import qualified Data.ByteString.Lazy as L
import qualified Data.Attoparsec.ByteString.Lazy as A
import Data.ByteString.Builder
type ConfigName = String
type ConfigValue = String
setGlobalConfig :: ConfigName -> ConfigValue -> Annex ()
setGlobalConfig name new = do
curr <- getGlobalConfig name
when (curr /= Just new) $
setGlobalConfig' name new
setGlobalConfig' :: ConfigName -> ConfigValue -> Annex ()
setGlobalConfig' name new = do
c <- liftIO currentVectorClock
Annex.Branch.change configLog $
buildGlobalConfig . changeMapLog c name new . parseGlobalConfig
unsetGlobalConfig :: ConfigName -> Annex ()
unsetGlobalConfig name = do
curr <- getGlobalConfig name
when (curr /= Nothing) $
setGlobalConfig' name "" -- set to empty string to unset
-- Reads the global config log every time.
getGlobalConfig :: ConfigName -> Annex (Maybe ConfigValue)
getGlobalConfig name = M.lookup name <$> loadGlobalConfig
buildGlobalConfig :: MapLog ConfigName ConfigValue -> Builder
buildGlobalConfig = buildMapLog fieldbuilder valuebuilder
where
fieldbuilder = byteString . encodeBS
valuebuilder = byteString . encodeBS
parseGlobalConfig :: L.ByteString -> MapLog ConfigName ConfigValue
parseGlobalConfig = parseMapLog string string
where
string = decodeBS <$> A.takeByteString
loadGlobalConfig :: Annex (M.Map ConfigName ConfigValue)
loadGlobalConfig = M.filter (not . null) . simpleMap . parseGlobalConfig
<$> Annex.Branch.get configLog
|
