git-annex/Command/Config.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

92 lines
2.4 KiB
Haskell

{- git-annex command
-
- Copyright 2017-2020 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
{-# LANGUAGE OverloadedStrings #-}
module Command.Config where
import Command
import Logs.Config
import Config
import Types.GitConfig (globalConfigs)
import Git.Types (fromConfigValue)
import qualified Data.ByteString.Char8 as S8
cmd :: Command
cmd = noMessages $ command "config" SectionSetup
"configuration stored in git-annex branch"
paramNothing (seek <$$> optParser)
data Action
= SetConfig ConfigKey ConfigValue
| GetConfig ConfigKey
| UnsetConfig ConfigKey
type Name = String
type Value = String
optParser :: CmdParamsDesc -> Parser Action
optParser _ = setconfig <|> getconfig <|> unsetconfig
where
setconfig = SetConfig
<$> strOption
( long "set"
<> help "set configuration"
<> metavar paramName
)
<*> strArgument
( metavar paramValue
)
getconfig = GetConfig <$> strOption
( long "get"
<> help "get configuration"
<> metavar paramName
)
unsetconfig = UnsetConfig <$> strOption
( long "unset"
<> help "unset configuration"
<> metavar paramName
)
seek :: Action -> CommandSeek
seek (SetConfig ck@(ConfigKey name) val) = checkIsGlobalConfig ck $ commandAction $
startingUsualMessages (decodeBS' name) ai si $ do
setGlobalConfig ck val
when (needLocalUpdate ck) $
setConfig ck (fromConfigValue val)
next $ return True
where
ai = ActionItemOther (Just (fromConfigValue val))
si = SeekInput [decodeBS' name]
seek (UnsetConfig ck@(ConfigKey name)) = checkIsGlobalConfig ck $ commandAction $
startingUsualMessages (decodeBS' name) ai si $ do
unsetGlobalConfig ck
when (needLocalUpdate ck) $
unsetConfig ck
next $ return True
where
ai = ActionItemOther (Just "unset")
si = SeekInput [decodeBS' name]
seek (GetConfig ck@(ConfigKey name)) = checkIsGlobalConfig ck $ commandAction $
startingCustomOutput ai $ do
getGlobalConfig ck >>= \case
Just (ConfigValue v) -> liftIO $ S8.putStrLn v
Just NoConfigValue -> return ()
Nothing -> return ()
next $ return True
where
ai = ActionItemOther Nothing
checkIsGlobalConfig :: ConfigKey -> Annex a -> Annex a
checkIsGlobalConfig ck@(ConfigKey name) a
| elem ck globalConfigs = a
| otherwise = giveup $ decodeBS name ++ " is not a configuration setting that can be stored in the git-annex branch"
needLocalUpdate :: ConfigKey -> Bool
needLocalUpdate (ConfigKey "annex.securehashesonly") = True
needLocalUpdate _ = False