git-annex/Command/Find.hs
Joey Hess a362c46b70 fun with symbols
Nothing at all on hackage is using <&&> or <||>.

(Also, <&&> should short-circuit on failure.)
2012-03-17 00:38:40 -04:00

61 lines
1.6 KiB
Haskell

{- git-annex command
-
- Copyright 2010-2012 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.Find where
import qualified Data.Map as M
import Common.Annex
import Command
import Annex.Content
import Limit
import qualified Annex
import qualified Utility.Format
import Utility.DataUnits
import Types.Key
import qualified Option
def :: [Command]
def = [withOptions [formatOption, print0Option] $
command "find" paramPaths seek "lists available files"]
formatOption :: Option
formatOption = Option.field [] "format" paramFormat "control format of output"
print0Option :: Option
print0Option = Option.Option [] ["print0"] (Option.NoArg set)
"terminate output with null"
where
set = Annex.setField (Option.name formatOption) "${file}\0"
seek :: [CommandSeek]
seek = [withField formatOption formatconverter $ \f ->
withFilesInGit $ whenAnnexed $ start f]
where
formatconverter = return . fmap Utility.Format.gen
start :: Maybe Utility.Format.Format -> FilePath -> (Key, Backend) -> CommandStart
start format file (key, _) = do
-- only files inAnnex are shown, unless the user has requested
-- others via a limit
whenM (limited <||> inAnnex key) $
unlessM (showFullJSON vars) $
case format of
Nothing -> liftIO $ putStrLn file
Just formatter -> liftIO $ putStr $
Utility.Format.format formatter $
M.fromList vars
stop
where
vars =
[ ("file", file)
, ("key", show key)
, ("backend", keyBackendName key)
, ("bytesize", size show)
, ("humansize", size $ roughSize storageUnits True)
]
size c = maybe "unknown" c $ keySize key