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{- 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 Utility.DataUnits
type UnqualifiedConfigKey = String
data ConfigKey = ConfigKey String
{- 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 "config" [Param key, Param value]
newg <- inRepo Git.Config.reRead
Annex.changeState $ \s -> s { Annex.repo = newg }
{- Unsets a git config setting. (Leaves it in state currently.) -}
unsetConfig :: ConfigKey -> Annex ()
unsetConfig (ConfigKey key) = inRepo $ Git.Command.run "config"
[Param "--unset", Param key]
{- Looks up a setting in git config. -}
getConfig :: ConfigKey -> String -> Annex String
getConfig (ConfigKey key) def = fromRepo $ Git.Config.get key def
{- Looks up a per-remote config setting in git config.
- Failing that, tries looking for a global config option. -}
getRemoteConfig :: Git.Repo -> UnqualifiedConfigKey -> String -> Annex String
getRemoteConfig r key def =
getConfig (remoteConfig r key) =<< getConfig (annexConfig key) def
{- 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 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 :: Git.Repo -> Int -> Annex Int
remoteCost r def = do
cmd <- getRemoteConfig r "cost-command" ""
(fromMaybe def . readish) <$>
if not $ null cmd
then liftIO $ readProcess "sh" ["-c", cmd]
else getRemoteConfig r "cost" ""
cheapRemoteCost :: Int
cheapRemoteCost = 100
semiCheapRemoteCost :: Int
semiCheapRemoteCost = 110
expensiveRemoteCost :: Int
expensiveRemoteCost = 200
{- Adjusts a remote's cost to reflect it being encrypted. -}
encryptedRemoteCostAdj :: Int
encryptedRemoteCostAdj = 50
{- Make sure the remote cost numbers work out. -}
prop_cost_sane :: Bool
prop_cost_sane = False `notElem`
[ expensiveRemoteCost > 0
, cheapRemoteCost < semiCheapRemoteCost
, semiCheapRemoteCost < expensiveRemoteCost
, cheapRemoteCost + encryptedRemoteCostAdj > semiCheapRemoteCost
, cheapRemoteCost + encryptedRemoteCostAdj < expensiveRemoteCost
, semiCheapRemoteCost + encryptedRemoteCostAdj < expensiveRemoteCost
]
{- Checks if a repo should be ignored. -}
repoNotIgnored :: Git.Repo -> Annex Bool
repoNotIgnored r = not . fromMaybe False . Git.Config.isTrue
<$> getRemoteConfig r "ignore" ""
{- If a value is specified, it is used; otherwise the default is looked up
- in git config. forcenumcopies overrides everything. -}
getNumCopies :: Maybe Int -> Annex Int
getNumCopies v = perhaps (use v) =<< Annex.getState Annex.forcenumcopies
where
use (Just n) = return n
use Nothing = perhaps (return 1) =<<
readish <$> getConfig (annexConfig "numcopies") "1"
perhaps fallback = maybe fallback (return . id)
{- Gets the trust level set for a remote in git config. -}
getTrustLevel :: Git.Repo -> Annex (Maybe String)
getTrustLevel r = fromRepo $ Git.Config.getMaybe key
where
(ConfigKey key) = remoteConfig r "trustlevel"
{- Gets annex.diskreserve setting. -}
getDiskReserve :: Annex Integer
getDiskReserve = fromMaybe megabyte . readSize dataUnits
<$> getConfig (annexConfig "diskreserve") ""
where
megabyte = 1000000
{- Gets annex.httpheaders or annex.httpheaders-command setting,
- splitting it into lines. -}
getHttpHeaders :: Annex [String]
getHttpHeaders = do
cmd <- getConfig (annexConfig "http-headers-command") ""
if null cmd
then fromRepo $ Git.Config.getList "annex.http-headers"
else lines <$> liftIO (readProcess "sh" ["-c", cmd])
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