0a4479b8ec
ghc 8 added backtraces on uncaught errors. This is great, but git-annex was using error in many places for a error message targeted at the user, in some known problem case. A backtrace only confuses such a message, so omit it. Notably, commands like git annex drop that failed due to eg, numcopies, used to use error, so had a backtrace. This commit was sponsored by Ethan Aubin.
55 lines
1.5 KiB
Haskell
55 lines
1.5 KiB
Haskell
{- git-annex command
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-
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- Copyright 2014 Joey Hess <id@joeyh.name>
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-
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- Licensed under the GNU GPL version 3 or higher.
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-}
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module Command.NumCopies where
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import Command
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import qualified Annex
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import Annex.NumCopies
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import Types.Messages
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cmd :: Command
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cmd = command "numcopies" SectionSetup
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"configure desired number of copies"
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paramNumber (withParams seek)
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seek :: CmdParams -> CommandSeek
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seek = withWords start
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start :: [String] -> CommandStart
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start [] = startGet
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start [s] = case readish s of
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Nothing -> giveup $ "Bad number: " ++ s
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Just n
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| n > 0 -> startSet n
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| n == 0 -> ifM (Annex.getState Annex.force)
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( startSet n
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, giveup "Setting numcopies to 0 is very unsafe. You will lose data! If you really want to do that, specify --force."
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)
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| otherwise -> giveup "Number cannot be negative!"
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start _ = giveup "Specify a single number."
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startGet :: CommandStart
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startGet = next $ next $ do
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Annex.setOutput QuietOutput
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v <- getGlobalNumCopies
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case v of
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Just n -> liftIO $ putStrLn $ show $ fromNumCopies n
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Nothing -> do
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liftIO $ putStrLn "global numcopies is not set"
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old <- deprecatedNumCopies
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case old of
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Nothing -> liftIO $ putStrLn "(default is 1)"
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Just n -> liftIO $ putStrLn $ "(deprecated git config annex.numcopies is set to " ++ show (fromNumCopies n) ++ " locally)"
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return True
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startSet :: Int -> CommandStart
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startSet n = do
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showStart "numcopies" (show n)
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next $ next $ do
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setGlobalNumCopies $ NumCopies n
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return True
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