42 lines
1.2 KiB
Haskell
42 lines
1.2 KiB
Haskell
{- git-annex command checks
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-
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- Common sanity checks for commands, and an interface to selectively
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- remove them, or add others.
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-
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- Copyright 2011 Joey Hess <joey@kitenet.net>
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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 Checks where
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import Common.Annex
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import Types.Command
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import Init
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import qualified Annex
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commonChecks :: [CommandCheck]
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commonChecks = [fromOpt, toOpt, repoExists]
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repoExists :: CommandCheck
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repoExists = CommandCheck 0 ensureInitialized
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fromOpt :: CommandCheck
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fromOpt = CommandCheck 1 $ do
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v <- Annex.getState Annex.fromremote
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unless (isNothing v) $ error "cannot use --from with this command"
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toOpt :: CommandCheck
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toOpt = CommandCheck 2 $ do
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v <- Annex.getState Annex.toremote
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unless (isNothing v) $ error "cannot use --to with this command"
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dontCheck :: CommandCheck -> Command -> Command
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dontCheck check cmd = mutateCheck cmd $ \c -> filter (/= check) c
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addCheck :: Annex () -> Command -> Command
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addCheck check cmd = mutateCheck cmd $
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\c -> CommandCheck (length c + 100) check : c
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mutateCheck :: Command -> ([CommandCheck] -> [CommandCheck]) -> Command
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mutateCheck cmd@(Command { cmdcheck = c }) a = cmd { cmdcheck = a c }
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