git-annex/Command/RenameRemote.hs
Joey Hess 3a05d53761
add SeekInput (not yet used)
No behavior changes (hopefully), just adding SeekInput and plumbing it
through to the JSON display code for later use.

Over the course of 2 grueling days.

withFilesNotInGit reimplemented in terms of seekHelper
should be the only possible behavior change. It seems to test as
behaving the same.

Note that seekHelper dummies up the SeekInput in the case where
segmentPaths' gives up on sorting the expanded paths because there are
too many input paths. When SeekInput later gets exposed as a json field,
that will result in it being a little bit wrong in the case where
100 or more paths are passed to a git-annex command. I think this is a
subtle enough problem to not matter. If it does turn out to be a
problem, fixing it would require splitting up the input
parameters into groups of < 100, which would make git ls-files run
perhaps more than is necessary. May want to revisit this, because that
fix seems fairly low-impact.
2020-09-15 15:41:13 -04:00

57 lines
1.9 KiB
Haskell

{- git-annex command
-
- Copyright 2019 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
module Command.RenameRemote where
import Command
import qualified Annex.SpecialRemote
import Annex.SpecialRemote.Config (nameField, sameasNameField)
import qualified Logs.Remote
import qualified Types.Remote as R
import qualified Remote
import Types.ProposedAccepted
import qualified Data.Map as M
cmd :: Command
cmd = command "renameremote" SectionSetup
"changes name of special remote"
(paramPair paramName paramName)
(withParams seek)
seek :: CmdParams -> CommandSeek
seek = withWords (commandAction . start)
start :: [String] -> CommandStart
start ps@(oldname:newname:[]) = Annex.SpecialRemote.findExisting oldname >>= \case
Just (u, cfg, mcu) -> Annex.SpecialRemote.findExisting newname >>= \case
Just _ -> giveup $ "The name " ++ newname ++ " is already used by a special remote."
Nothing -> go u cfg mcu
-- Support lookup by uuid or description as well as remote name,
-- as a fallback when there is nothing with the name in the
-- special remote log.
Nothing -> Remote.nameToUUID' oldname >>= \case
Left e -> giveup e
Right u -> do
m <- Logs.Remote.readRemoteLog
case M.lookup u m of
Nothing -> giveup "That is not a special remote."
Just cfg -> go u cfg Nothing
where
ai = ActionItemOther Nothing
si = SeekInput ps
go u cfg mcu = starting "rename" ai si $ perform u cfg mcu newname
start _ = giveup "Specify an old name (or uuid or description) and a new name."
perform :: UUID -> R.RemoteConfig -> Maybe (Annex.SpecialRemote.ConfigFrom UUID) -> String -> CommandPerform
perform u cfg mcu newname = do
let (namefield, cu) = case mcu of
Nothing -> (nameField, u)
Just (Annex.SpecialRemote.ConfigFrom u') -> (sameasNameField, u')
Logs.Remote.configSet cu (M.insert namefield (Proposed newname) cfg)
next $ return True