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|
{- git-annex numcopies configuration
-
- Copyright 2014 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Config.NumCopies (
module Types.NumCopies,
module Logs.NumCopies,
getFileNumCopies,
getGlobalFileNumCopies,
getNumCopies,
numCopiesCheck,
deprecatedNumCopies,
defaultNumCopies
) where
import Common.Annex
import qualified Annex
import Types.NumCopies
import Logs.NumCopies
import Logs.Trust
import Annex.CheckAttr
import qualified Remote
defaultNumCopies :: NumCopies
defaultNumCopies = NumCopies 1
fromSources :: [Annex (Maybe NumCopies)] -> Annex NumCopies
fromSources = fromMaybe defaultNumCopies <$$> getM id
{- The git config annex.numcopies is deprecated. -}
deprecatedNumCopies :: Annex (Maybe NumCopies)
deprecatedNumCopies = annexNumCopies <$> Annex.getGitConfig
{- Value forced on the command line by --numcopies. -}
getForcedNumCopies :: Annex (Maybe NumCopies)
getForcedNumCopies = Annex.getState Annex.forcenumcopies
{- Numcopies value from any of the non-.gitattributes configuration
- sources. -}
getNumCopies :: Annex NumCopies
getNumCopies = fromSources
[ getForcedNumCopies
, getGlobalNumCopies
, deprecatedNumCopies
]
{- Numcopies value for a file, from any configuration source, including the
- deprecated git config. -}
getFileNumCopies :: FilePath -> Annex NumCopies
getFileNumCopies f = fromSources
[ getForcedNumCopies
, getFileNumCopies' f
, deprecatedNumCopies
]
{- This is the globally visible numcopies value for a file. So it does
- not include local configuration in the git config or command line
- options. -}
getGlobalFileNumCopies :: FilePath -> Annex NumCopies
getGlobalFileNumCopies f = fromSources
[ getFileNumCopies' f
]
getFileNumCopies' :: FilePath -> Annex (Maybe NumCopies)
getFileNumCopies' file = maybe getGlobalNumCopies (return . Just) =<< getattr
where
getattr = (NumCopies <$$> readish)
<$> checkAttr "annex.numcopies" file
{- Checks if numcopies are satisfied for a file by running a comparison
- between the number of (not untrusted) copies that are
- belived to exist, and the configured value. -}
numCopiesCheck :: FilePath -> Key -> (Int -> Int -> v) -> Annex v
numCopiesCheck file key vs = do
NumCopies needed <- getFileNumCopies file
have <- trustExclude UnTrusted =<< Remote.keyLocations key
return $ length have `vs` needed
|
