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|
{- git-annex command
-
- Copyright 2011 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.SetContent where
import Common.Annex
import Command
import Logs.Location
import Annex.Content
import qualified Backend
import qualified Command.Fsck
def :: [Command]
def = [command "setcontent" (paramPair paramPath paramPath) seek
"sets content of annexed file"]
seek :: [CommandSeek]
seek = [withWords start]
start :: [FilePath] -> CommandStart
start (src:dest:[]) = do
showStart "setcontent" dest
next $ perform src dest
start _ = error "specify a src file and a dest file"
perform :: FilePath -> FilePath -> CommandPerform
perform src dest = go =<< Backend.lookupFile dest
where
go Nothing = error "dest file is not in annex"
go (Just (key, backend)) = do
-- the file might be on a different filesystem,
-- so mv is used rather than simply calling
-- moveToObjectDir; disk space is also
-- checked this way.
ok <- getViaTmp key $ \tmp ->
if dest /= src
then liftIO $
boolSystem "mv" [File src, File tmp]
else return True
if ok
then next $ cleanup key backend
else error "mv failed!"
cleanup :: Key -> Backend Annex -> CommandCleanup
cleanup key backend = do
logStatus key InfoPresent
-- fsck the new content
size_ok <- Command.Fsck.checkKeySize key
backend_ok <- Command.Fsck.checkBackend backend key
return $ size_ok && backend_ok
|
