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|
{- Git configuration
-
- Copyright 2011 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 Annex
type ConfigKey = String
{- Changes a git config setting in both internal state and .git/config -}
setConfig :: ConfigKey -> String -> Annex ()
setConfig k value = do
inRepo $ Git.run "config" [Param k, Param value]
-- re-read git config and update the repo's state
newg <- inRepo Git.configRead
Annex.changeState $ \s -> s { Annex.repo = newg }
{- Looks up a per-remote config setting in git config.
- Failing that, tries looking for a global config option. -}
getConfig :: Git.Repo -> ConfigKey -> String -> Annex String
getConfig r key def = do
def' <- fromRepo $ Git.configGet ("annex." ++ key) def
fromRepo $ Git.configGet (remoteConfig r key) def'
{- Looks up a per-remote config setting in git config. -}
remoteConfig :: Git.Repo -> ConfigKey -> String
remoteConfig r key = "remote." ++ fromMaybe "" (Git.repoRemoteName r) ++ ".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 <- getConfig r "cost-command" ""
safeparse <$> if not $ null cmd
then liftIO $ snd <$> pipeFrom "sh" ["-c", cmd]
else getConfig r "cost" ""
where
safeparse v
| null ws = def
| otherwise = fromMaybe def $ readMaybe $ head ws
where
ws = words v
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, based either on annex-ignore
- setting, or on command-line options. Allows command-line to override
- annex-ignore. -}
repoNotIgnored :: Git.Repo -> Annex Bool
repoNotIgnored r = not . Git.configTrue <$> getConfig r "ignore" "false"
{- If a value is specified, it is used; otherwise the default is looked up
- in git config. forcenumcopies overrides everything. -}
getNumCopies :: Maybe Int -> Annex Int
getNumCopies v = perhaps (use v) =<< Annex.getState Annex.forcenumcopies
where
use (Just n) = return n
use Nothing = perhaps (return 1) =<<
readMaybe <$> fromRepo (Git.configGet config "1")
perhaps fallback = maybe fallback (return . id)
config = "annex.numcopies"
|
