79 lines
1.9 KiB
Haskell
79 lines
1.9 KiB
Haskell
{- git-annex upgrade support
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-
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- Copyright 2010 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 Upgrade where
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import System.IO.Error (try)
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import System.Directory
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import Control.Monad.State (liftIO)
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import Control.Monad (filterM)
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import System.Posix.Files
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import System.FilePath
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import Core
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import Types
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import Locations
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import qualified GitRepo as Git
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import qualified Annex
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import qualified Backend
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import Messages
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import Version
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{- Uses the annex.version git config setting to automate upgrades. -}
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upgrade :: Annex Bool
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upgrade = do
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version <- getVersion
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case version of
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Just "0" -> upgradeFrom0
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Nothing -> return True -- repo not initted yet, no version
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Just v | v == currentVersion -> return True
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Just _ -> error "this version of git-annex is too old for this git repository!"
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upgradeFrom0 :: Annex Bool
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upgradeFrom0 = do
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showSideAction "Upgrading object directory layout..."
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g <- Annex.gitRepo
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-- do the reorganisation of the files
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let olddir = annexDir g
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keys <- getKeysPresent0' olddir
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_ <- mapM (\k -> moveAnnex k $ olddir ++ "/" ++ keyFile k) keys
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-- update the symlinks to the files
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files <- liftIO $ Git.inRepo g $ Git.workTree g
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fixlinks files
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Annex.queueRun
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setVersion
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return True
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where
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fixlinks [] = return ()
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fixlinks (f:fs) = do
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r <- Backend.lookupFile f
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case r of
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Nothing -> return ()
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Just (k, _) -> do
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link <- calcGitLink f k
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liftIO $ removeFile f
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liftIO $ createSymbolicLink link f
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Annex.queue "add" ["--"] f
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fixlinks fs
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getKeysPresent0' :: FilePath -> Annex [Key]
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getKeysPresent0' dir = do
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contents <- liftIO $ getDirectoryContents dir
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files <- liftIO $ filterM present contents
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return $ map fileKey files
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where
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present d = do
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result <- try $
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getFileStatus $ dir ++ "/" ++ takeFileName d
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case result of
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Right s -> return $ isRegularFile s
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Left _ -> return False
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