106 lines
3.2 KiB
Haskell
106 lines
3.2 KiB
Haskell
{- Git configuration
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-
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- Copyright 2011 Joey Hess <joey@kitenet.net>
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-
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- Licensed under the GNU GPL version 3 or higher.
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-}
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module Config where
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import Common.Annex
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import qualified Git
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import qualified Annex
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import Types.Key (readKey)
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type ConfigKey = String
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{- Changes a git config setting in both internal state and .git/config -}
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setConfig :: ConfigKey -> String -> Annex ()
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setConfig k value = do
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g <- gitRepo
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liftIO $ Git.run g "config" [Param k, Param value]
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-- re-read git config and update the repo's state
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g' <- liftIO $ Git.configRead g
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Annex.changeState $ \s -> s { Annex.repo = g' }
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{- Looks up a per-remote config setting in git config.
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- Failing that, tries looking for a global config option. -}
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getConfig :: Git.Repo -> ConfigKey -> String -> Annex String
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getConfig r key def = do
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g <- gitRepo
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let def' = Git.configGet g ("annex." ++ key) def
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return $ Git.configGet g (remoteConfig r key) def'
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remoteConfig :: Git.Repo -> ConfigKey -> String
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remoteConfig r key = "remote." ++ fromMaybe "" (Git.repoRemoteName r) ++ ".annex-" ++ key
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{- Calculates cost for a remote. Either the default, or as configured
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- by remote.<name>.annex-cost, or if remote.<name>.annex-cost-command
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- is set and prints a number, that is used.
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-}
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remoteCost :: Git.Repo -> Int -> Annex Int
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remoteCost r def = do
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cmd <- getConfig r "cost-command" ""
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safeparse <$> if not $ null cmd
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then liftIO $ snd <$> pipeFrom "sh" ["-c", cmd]
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else getConfig r "cost" ""
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where
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safeparse v
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| null ws = def
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| otherwise = fromMaybe def $ readMaybe $ head ws
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where
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ws = words v
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cheapRemoteCost :: Int
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cheapRemoteCost = 100
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semiCheapRemoteCost :: Int
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semiCheapRemoteCost = 110
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expensiveRemoteCost :: Int
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expensiveRemoteCost = 200
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{- Adjust's a remote's cost to reflect it being encrypted. -}
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encryptedRemoteCostAdj :: Int
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encryptedRemoteCostAdj = 50
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{- Make sure the remote cost numbers work out. -}
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prop_cost_sane :: Bool
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prop_cost_sane = False `notElem`
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[ expensiveRemoteCost > 0
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, cheapRemoteCost < semiCheapRemoteCost
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, semiCheapRemoteCost < expensiveRemoteCost
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, cheapRemoteCost + encryptedRemoteCostAdj > semiCheapRemoteCost
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, cheapRemoteCost + encryptedRemoteCostAdj < expensiveRemoteCost
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, semiCheapRemoteCost + encryptedRemoteCostAdj < expensiveRemoteCost
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]
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{- Checks if a repo should be ignored, based either on annex-ignore
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- setting, or on command-line options. Allows command-line to override
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- annex-ignore. -}
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repoNotIgnored :: Git.Repo -> Annex Bool
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repoNotIgnored r = do
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ignored <- getConfig r "ignore" "false"
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return $ not $ Git.configTrue ignored
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{- If a value is specified, it is used; otherwise the default is looked up
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- in git config. forcenumcopies overrides everything. -}
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getNumCopies :: Maybe Int -> Annex Int
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getNumCopies v =
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Annex.getState Annex.forcenumcopies >>= maybe (use v) (return . id)
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where
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use (Just n) = return n
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use Nothing = do
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g <- gitRepo
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return $ read $ Git.configGet g config "1"
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config = "annex.numcopies"
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{- The Key specified by the --key parameter. -}
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cmdlineKey :: Annex Key
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cmdlineKey = do
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k <- Annex.getState Annex.defaultkey
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case k of
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Nothing -> nokey
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Just "" -> nokey
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Just kstring -> maybe badkey return $ readKey kstring
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where
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nokey = error "please specify the key with --key"
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badkey = error "bad key"
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