git-annex/Command/AddUnused.hs
Joey Hess 94fcd0cf59 add routes to pause/start/cancel transfers
This commit includes a paydown on technical debt incurred two years ago,
when I didn't know that it was bad to make custom Read and Show instances
for types. As the routes need Read and Show for Transfer, which includes a
Key, and deriving my own Read instance of key was not practical,
I had to finally clean that up.

So the compact Key read and show functions are now file2key and key2file,
and Read and Show are now derived instances.

Changed all code that used the old instances, compiler checked.
(There were a few places, particularly in Command.Unused, and the test
suite where the Show instance continue to be used for legitimate
comparisons; ie show key_x == show key_y (though really in a bloom filter))
2012-08-08 16:20:24 -04:00

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{- git-annex command
-
- Copyright 2012 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.AddUnused where
import Common.Annex
import Logs.Unused
import Command
import qualified Command.Add
import Types.Key
def :: [Command]
def = [command "addunused" (paramRepeating paramNumRange)
seek "add back unused files"]
seek :: [CommandSeek]
seek = [withUnusedMaps start]
start :: UnusedMaps -> Int -> CommandStart
start = startUnused "addunused" perform (performOther "bad") (performOther "tmp")
perform :: Key -> CommandPerform
perform key = next $ Command.Add.cleanup file key True
where
file = "unused." ++ key2file key
{- The content is not in the annex, but in another directory, and
- it seems better to error out, rather than moving bad/tmp content into
- the annex. -}
performOther :: String -> Key -> CommandPerform
performOther other _ = error $ "cannot addunused " ++ other ++ "content"