git-annex/Command/Init.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

82 lines
2.2 KiB
Haskell

{- git-annex command
-
- Copyright 2010-2020 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
module Command.Init where
import Command
import Annex.Init
import Annex.Version
import Types.RepoVersion
import qualified Annex.SpecialRemote
import Control.Monad.Fail as Fail (MonadFail(..))
import qualified Data.Map as M
cmd :: Command
cmd = dontCheck repoExists $
command "init" SectionSetup "initialize git-annex"
paramDesc (seek <$$> optParser)
data InitOptions = InitOptions
{ initDesc :: String
, initVersion :: Maybe RepoVersion
, autoEnableOnly :: Bool
}
optParser :: CmdParamsDesc -> Parser InitOptions
optParser desc = InitOptions
<$> (unwords <$> cmdParams desc)
<*> optional (option (str >>= parseRepoVersion)
( long "version" <> metavar paramValue
<> help "Override default annex.version"
))
<*> switch
( long "autoenable"
<> help "only enable special remotes configured with autoenable=true"
)
parseRepoVersion :: MonadFail m => String -> m RepoVersion
parseRepoVersion s = case RepoVersion <$> readish s of
Nothing -> Fail.fail $ "version parse error"
Just v
| v `elem` supportedVersions -> return v
| otherwise -> case M.lookup v autoUpgradeableVersions of
Just v' -> return v'
Nothing -> Fail.fail $ s ++ " is not a currently supported repository version"
seek :: InitOptions -> CommandSeek
seek = commandAction . start
start :: InitOptions -> CommandStart
start os
| autoEnableOnly os =
starting "init" (ActionItemOther (Just "autoenable")) si $
performAutoEnableOnly
| otherwise =
starting "init" (ActionItemOther (Just $ initDesc os)) si $
perform os
where
si = SeekInput []
perform :: InitOptions -> CommandPerform
perform os = do
case initVersion os of
Nothing -> noop
Just wantversion -> getVersion >>= \case
Just v | v /= wantversion ->
giveup $ "This repository is already a initialized with version " ++ show (fromRepoVersion v) ++ ", not changing to requested version."
_ -> noop
initialize
(if null (initDesc os) then Nothing else Just (initDesc os))
(initVersion os)
Annex.SpecialRemote.autoEnable
next $ return True
performAutoEnableOnly :: CommandPerform
performAutoEnableOnly = do
Annex.SpecialRemote.autoEnable
next $ return True