45 lines
1 KiB
Haskell
45 lines
1 KiB
Haskell
{- git-annex unused log file
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-
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- Copyright 2010,2012 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 Logs.Unused (
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UnusedMap(..),
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writeUnusedLog,
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readUnusedLog,
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unusedKeys,
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) where
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import qualified Data.Map as M
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import Common.Annex
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import Types.Key
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import Utility.Tmp
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type UnusedMap = M.Map Int Key
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writeUnusedLog :: FilePath -> [(Int, Key)] -> Annex ()
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writeUnusedLog prefix l = do
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logfile <- fromRepo $ gitAnnexUnusedLog prefix
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liftIO $ viaTmp writeFile logfile $
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unlines $ map (\(n, k) -> show n ++ " " ++ key2file k) l
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readUnusedLog :: FilePath -> Annex UnusedMap
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readUnusedLog prefix = do
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f <- fromRepo $ gitAnnexUnusedLog prefix
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ifM (liftIO $ doesFileExist f)
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( M.fromList . mapMaybe parse . lines
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<$> liftIO (readFile f)
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, return M.empty
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)
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where
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parse line = case (readish tag, file2key rest) of
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(Just num, Just key) -> Just (num, key)
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_ -> Nothing
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where
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(tag, rest) = separate (== ' ') line
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unusedKeys :: Annex [Key]
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unusedKeys = M.elems <$> readUnusedLog ""
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