40ecf58d4b
This does not change the overall license of the git-annex program, which was already AGPL due to a number of sources files being AGPL already. Legally speaking, I'm adding a new license under which these files are now available; I already released their current contents under the GPL license. Now they're dual licensed GPL and AGPL. However, I intend for all my future changes to these files to only be released under the AGPL license, and I won't be tracking the dual licensing status, so I'm simply changing the license statement to say it's AGPL. (In some cases, others wrote parts of the code of a file and released it under the GPL; but in all cases I have contributed a significant portion of the code in each file and it's that code that is getting the AGPL license; the GPL license of other contributors allows combining with AGPL code.)
65 lines
1.8 KiB
Haskell
65 lines
1.8 KiB
Haskell
{- git-annex repository-global config log
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-
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- Copyright 2017-2019 Joey Hess <id@joeyh.name>
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-
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- Licensed under the GNU AGPL version 3 or higher.
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-}
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module Logs.Config (
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ConfigName,
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ConfigValue,
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setGlobalConfig,
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unsetGlobalConfig,
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getGlobalConfig,
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loadGlobalConfig,
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) where
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import Annex.Common
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import Logs
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import Logs.MapLog
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import qualified Annex.Branch
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import qualified Data.Map as M
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import qualified Data.ByteString.Lazy as L
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import qualified Data.Attoparsec.ByteString.Lazy as A
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import Data.ByteString.Builder
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type ConfigName = String
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type ConfigValue = String
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setGlobalConfig :: ConfigName -> ConfigValue -> Annex ()
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setGlobalConfig name new = do
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curr <- getGlobalConfig name
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when (curr /= Just new) $
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setGlobalConfig' name new
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setGlobalConfig' :: ConfigName -> ConfigValue -> Annex ()
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setGlobalConfig' name new = do
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c <- liftIO currentVectorClock
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Annex.Branch.change configLog $
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buildGlobalConfig . changeMapLog c name new . parseGlobalConfig
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unsetGlobalConfig :: ConfigName -> Annex ()
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unsetGlobalConfig name = do
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curr <- getGlobalConfig name
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when (curr /= Nothing) $
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setGlobalConfig' name "" -- set to empty string to unset
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-- Reads the global config log every time.
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getGlobalConfig :: ConfigName -> Annex (Maybe ConfigValue)
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getGlobalConfig name = M.lookup name <$> loadGlobalConfig
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buildGlobalConfig :: MapLog ConfigName ConfigValue -> Builder
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buildGlobalConfig = buildMapLog fieldbuilder valuebuilder
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where
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fieldbuilder = byteString . encodeBS
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valuebuilder = byteString . encodeBS
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parseGlobalConfig :: L.ByteString -> MapLog ConfigName ConfigValue
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parseGlobalConfig = parseMapLog string string
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where
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string = decodeBS <$> A.takeByteString
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loadGlobalConfig :: Annex (M.Map ConfigName ConfigValue)
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loadGlobalConfig = M.filter (not . null) . simpleMap . parseGlobalConfig
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<$> Annex.Branch.get configLog
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