git-annex/Command/MinCopies.hs
Joey Hess cc89699457
mincopies
This is conceptually very simple, just making a 1 that was hard coded be
exposed as a config option. The hard part was plumbing all that, and
dealing with complexities like reading it from git attributes at the
same time that numcopies is read.

Behavior change: When numcopies is set to 0, git-annex used to drop
content without requiring any copies. Now to get that (highly unsafe)
behavior, mincopies also needs to be set to 0. It seemed better to
remove that edge case, than complicate mincopies by ignoring it when
numcopies is 0.

This commit was sponsored by Denis Dzyubenko on Patreon.
2021-01-06 14:15:19 -04:00

39 lines
1 KiB
Haskell

{- git-annex command
-
- Copyright 2014-2021 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
module Command.MinCopies where
import Command
import Annex.NumCopies
import qualified Command.NumCopies
cmd :: Command
cmd = noMessages $ command "mincopies" SectionSetup
"configure minimum number of copies"
paramNumber (withParams seek)
seek :: CmdParams -> CommandSeek
seek = withWords (commandAction . Command.NumCopies.start' "mincopies" startGet startSet)
start :: [String] -> CommandStart
start = Command.NumCopies.start' "mincopies" startGet startSet
startGet :: CommandStart
startGet = startingCustomOutput (ActionItemOther Nothing) $ next $ do
v <- getGlobalMinCopies
case v of
Just n -> liftIO $ putStrLn $ show $ fromMinCopies n
Nothing -> liftIO $ putStrLn "global mincopies is not set"
return True
startSet :: Int -> CommandStart
startSet n = startingUsualMessages "mincopies" ai si $ do
setGlobalMinCopies $ MinCopies n
next $ return True
where
ai = ActionItemOther (Just $ show n)
si = SeekInput [show n]