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{- git-annex unused log file
-
- Copyright 2010,2012 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Logs.Unused (
UnusedMap(..),
writeUnusedLog,
readUnusedLog,
unusedKeys,
) where
import qualified Data.Map as M
import Common.Annex
import Types.Key
import Utility.Tmp
type UnusedMap = M.Map Int Key
writeUnusedLog :: FilePath -> [(Int, Key)] -> Annex ()
writeUnusedLog prefix l = do
logfile <- fromRepo $ gitAnnexUnusedLog prefix
liftIO $ viaTmp writeFile logfile $
unlines $ map (\(n, k) -> show n ++ " " ++ key2file k) l
readUnusedLog :: FilePath -> Annex UnusedMap
readUnusedLog prefix = do
f <- fromRepo $ gitAnnexUnusedLog prefix
ifM (liftIO $ doesFileExist f)
( M.fromList . mapMaybe parse . lines
<$> liftIO (readFile f)
, return M.empty
)
where
parse line = case (readish tag, file2key rest) of
(Just num, Just key) -> Just (num, key)
_ -> Nothing
where
(tag, rest) = separate (== ' ') line
unusedKeys :: Annex [Key]
unusedKeys = M.elems <$> readUnusedLog ""
|
