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|
{- git-recover-repository program
-
- Copyright 2012 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
import System.Environment
import System.Log.Logger
import System.Log.Formatter
import System.Log.Handler (setFormatter)
import System.Log.Handler.Simple
import qualified Data.Set as S
import Common
import qualified Git.CurrentRepo
import qualified Git.RecoverRepository
import qualified Git.Config
import qualified Git.Branch
header :: String
header = "Usage: git-recover-repository"
usage :: a
usage = error $ "bad parameters\n\n" ++ header
parseArgs :: IO Bool
parseArgs = do
args <- getArgs
return $ or $ map parse args
where
parse "--force" = True
parse _ = usage
enableDebugOutput :: IO ()
enableDebugOutput = do
s <- setFormatter
<$> streamHandler stderr DEBUG -- NOTICE
<*> pure (simpleLogFormatter "$msg")
updateGlobalLogger rootLoggerName (setLevel DEBUG . setHandlers [s])
main :: IO ()
main = do
enableDebugOutput
forced <- parseArgs
g <- Git.Config.read =<< Git.CurrentRepo.get
missing <- Git.RecoverRepository.cleanCorruptObjects g
stillmissing <- Git.RecoverRepository.retrieveMissingObjects missing g
if S.null stillmissing
then putStr $ unlines
[ "Successfully recovered repository!"
, "You should run \"git fsck\" to make sure, but it looks like"
, "everything was recovered ok."
]
else do
putStrLn $ unwords
[ show (S.size stillmissing)
, "missing objects could not be recovered!"
]
if forced
then do
(remotebranches, goodcommits) <- Git.RecoverRepository.removeTrackingBranches stillmissing Git.RecoverRepository.emptyGoodCommits g
unless (null remotebranches) $
putStrLn $ unwords
[ "removed"
, show (length remotebranches)
, "remote tracking branches that referred to missing objects"
]
(resetbranches, deletedbranches, _) <- Git.RecoverRepository.resetLocalBranches stillmissing goodcommits g
unless (null resetbranches) $ do
putStrLn "Reset these local branches to old versions before the missing objects were committed:"
putStr $ unlines $ map show resetbranches
unless (null deletedbranches) $ do
putStrLn "Deleted these local branches, which could not be recovered due to missing objects:"
putStr $ unlines $ map show deletedbranches
mcurr <- Git.Branch.currentUnsafe g
case mcurr of
Nothing -> return ()
Just curr -> when (any (== curr) (resetbranches ++ deletedbranches)) $ do
putStrLn $ unwords
[ "You currently have"
, show curr
, "checked out. You may have staged changes in the index that can be committed to recover the lost state of this branch!"
]
else putStrLn "To force a recovery to a usable state, run this command again with the --force parameter."
|
