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{- git-annex command
-
- Copyright 2014 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.MetaData where
import Common.Annex
import qualified Annex
import Command
import Logs.MetaData
import Types.MetaData
import qualified Data.Set as S
def :: [Command]
def = [withOptions [setOption] $ command "metadata" paramPaths seek
SectionUtility "sets metadata of a file"]
setOption :: Option
setOption = Option ['s'] ["set"] (ReqArg mkmod "field[+-]=value") "set metadata"
where
mkmod p = case parseModMeta p of
Left e -> error e
Right modmeta -> Annex.changeState $
\s -> s { Annex.modmeta = modmeta:Annex.modmeta s }
seek :: CommandSeek
seek ps = do
modmeta <- Annex.getState Annex.modmeta
withFilesInGit (whenAnnexed $ start modmeta) ps
start :: [ModMeta] -> FilePath -> (Key, Backend) -> CommandStart
start ms file (k, _) = do
showStart "metadata" file
next $ perform k ms
perform :: Key -> [ModMeta] -> CommandPerform
perform k [] = next $ cleanup k
perform k ms = do
oldm <- getCurrentMetaData k
let m = foldl' unionMetaData newMetaData $ map (modMeta oldm) ms
addMetaData k m
next $ cleanup k
cleanup :: Key -> CommandCleanup
cleanup k = do
m <- getCurrentMetaData k
showLongNote $ unlines $ concatMap showmeta $ fromMetaData $ currentMetaData m
return True
where
showmeta (f, vs) = map (\v -> fromMetaField f ++ "=" ++ fromMetaValue v) $ S.toList vs
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