82 lines
2.6 KiB
Haskell
82 lines
2.6 KiB
Haskell
{- git-annex command
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-
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- Copyright 2010,2012,2018 Joey Hess <id@joeyh.name>
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-
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- Licensed under the GNU AGPL version 3 or higher.
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-}
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{-# LANGUAGE OverloadedStrings #-}
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module Command.DropUnused where
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import Command
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import qualified Annex
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import qualified Command.Drop
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import qualified Remote
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import qualified Git
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import Command.Unused (withUnusedMaps, UnusedMaps(..), startUnused)
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import Annex.NumCopies
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import Annex.Content
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import qualified Utility.RawFilePath as R
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cmd :: Command
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cmd = withAnnexOptions [jobsOption, jsonOptions] $
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command "dropunused" SectionMaintenance
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"drop unused file content"
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(paramRepeating paramNumRange) (seek <$$> optParser)
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data DropUnusedOptions = DropUnusedOptions
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{ rangesToDrop :: CmdParams
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, dropFrom :: Maybe (DeferredParse Remote)
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}
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optParser :: CmdParamsDesc -> Parser DropUnusedOptions
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optParser desc = DropUnusedOptions
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<$> cmdParams desc
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<*> optional (Command.Drop.parseDropFromOption)
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seek :: DropUnusedOptions -> CommandSeek
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seek o = startConcurrency commandStages $ do
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numcopies <- getNumCopies
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mincopies <- getMinCopies
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from <- maybe (pure Nothing) (Just <$$> getParsed) (dropFrom o)
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withUnusedMaps (start from numcopies mincopies) (rangesToDrop o)
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start :: Maybe Remote -> NumCopies -> MinCopies -> UnusedMaps -> Int -> CommandStart
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start from numcopies mincopies = startUnused
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(go (perform from numcopies mincopies))
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(go (performOther gitAnnexBadLocation))
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(go (performOther gitAnnexTmpObjectLocation))
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where
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go a n key = starting "dropunused"
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(ActionItemOther $ Just $ UnquotedString $ show n)
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(SeekInput [show n])
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(a key)
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perform :: Maybe Remote -> NumCopies -> MinCopies -> Key -> CommandPerform
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perform from numcopies mincopies key = case from of
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Just r -> do
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showAction $ UnquotedString $ "from " ++ Remote.name r
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Command.Drop.performRemote pcc key (AssociatedFile Nothing) numcopies mincopies r ud
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Nothing -> ifM (inAnnex key)
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( droplocal
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, ifM (objectFileExists key)
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( ifM (Annex.getRead Annex.force)
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( droplocal
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, do
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warning "Annexed object has been modified and dropping it would probably lose the only copy. Run this command with --force if you want to drop it anyway."
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next $ return False
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)
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, next $ return True
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)
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)
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where
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droplocal = Command.Drop.performLocal pcc key (AssociatedFile Nothing) numcopies mincopies [] ud
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pcc = Command.Drop.PreferredContentChecked False
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ud = Command.Drop.DroppingUnused True
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performOther :: (Key -> Git.Repo -> RawFilePath) -> Key -> CommandPerform
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performOther filespec key = do
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f <- fromRepo $ filespec key
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pruneTmpWorkDirBefore f (liftIO . removeWhenExistsWith R.removeLink)
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next $ return True
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