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|
{- git-annex command
-
- Copyright 2015 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.Smudge where
import Command
import Annex.Content
import Annex.Link
import Annex.FileMatcher
import Annex.Ingest
import Logs.Location
import qualified Database.Keys
import Git.FilePath
import qualified Data.ByteString.Lazy as B
cmd :: Command
cmd = noCommit $ noMessages $
command "smudge" SectionPlumbing
"git smudge filter"
paramFile (seek <$$> optParser)
data SmudgeOptions = SmudgeOptions
{ smudgeFile :: FilePath
, cleanOption :: Bool
}
optParser :: CmdParamsDesc -> Parser SmudgeOptions
optParser desc = SmudgeOptions
<$> argument str ( metavar desc )
<*> switch ( long "clean" <> help "clean filter" )
seek :: SmudgeOptions -> CommandSeek
seek o = commandAction $
(if cleanOption o then clean else smudge) (smudgeFile o)
-- Smudge filter is fed git file content, and if it's a pointer to an
-- available annex object, should output its content.
smudge :: FilePath -> CommandStart
smudge file = do
b <- liftIO $ B.hGetContents stdin
case parseLinkOrPointer b of
Nothing -> liftIO $ B.putStr b
Just k -> do
-- A previous unlocked checkout of the file may have
-- led to the annex object getting modified;
-- don't provide such modified content as it
-- will be confusing. inAnnex will detect such
-- modifications.
ifM (inAnnex k)
( do
content <- calcRepo (gitAnnexLocation k)
liftIO $ B.putStr . fromMaybe b
=<< catchMaybeIO (B.readFile content)
, liftIO $ B.putStr b
)
Database.Keys.addAssociatedFile k =<< inRepo (toTopFilePath file)
stop
-- Clean filter is fed file content on stdin, decides if a file
-- should be stored in the annex, and outputs a pointer to its
-- injested content.
clean :: FilePath -> CommandStart
clean file = do
b <- liftIO $ B.hGetContents stdin
if isJust (parseLinkOrPointer b)
then liftIO $ B.hPut stdout b
else ifM (shouldAnnex file)
( liftIO . emitPointer
=<< go =<< ingest =<< lockDown cfg file
, liftIO $ B.hPut stdout b
)
stop
where
go (Just k, _) = do
logStatus k InfoPresent
return k
go _ = error "could not add file to the annex"
cfg = LockDownConfig
{ lockingFile = False
, hardlinkFileTmp = False
}
shouldAnnex :: FilePath -> Annex Bool
shouldAnnex file = do
matcher <- largeFilesMatcher
checkFileMatcher matcher file
emitPointer :: Key -> IO ()
emitPointer = putStr . formatPointer
|
