converted ContentLocation, ExampleKey, LookupKey
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5 changed files with 58 additions and 48 deletions
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@ -10,29 +10,42 @@ module CmdLine.Batch where
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import Common.Annex
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import Command
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batchOption :: Option
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batchOption = flagOption [] "batch" "enable batch mode"
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data BatchMode = Batch | NoBatch
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batchOption :: Parser BatchMode
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batchOption = flag NoBatch Batch
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( long "batch"
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<> help "enable batch mode"
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)
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type Batchable t = BatchMode -> t -> CommandStart
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-- A Batchable command can run in batch mode, or not.
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-- In batch mode, one line at a time is read, parsed, and a reply output to
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-- stdout. In non batch mode, the command's parameters are parsed and
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-- a reply output for each.
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batchable :: ((t -> CommandStart) -> CmdParams -> CommandSeek) -> Batchable t -> CmdParams -> CommandSeek
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batchable seeker starter params = ifM (getOptionFlag batchOption)
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( batchloop
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, seeker (starter NoBatch) params
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)
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batchable :: (opts -> String -> Annex Bool) -> Parser opts -> CmdParamsDesc -> CommandParser
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batchable handler parser paramdesc = batchseeker <$> batchparser
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where
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batchloop = do
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batchparser = (,,)
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<$> parser
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<*> batchOption
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<*> cmdParams paramdesc
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batchseeker (opts, NoBatch, params) = mapM_ (go NoBatch opts) params
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batchseeker (opts, Batch, _) = batchloop opts
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batchloop opts = do
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mp <- liftIO $ catchMaybeIO getLine
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case mp of
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Nothing -> return ()
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Just p -> do
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seeker (starter Batch) [p]
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batchloop
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go Batch opts p
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batchloop opts
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go batchmode opts p =
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unlessM (handler opts p) $
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batchBadInput batchmode
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-- bad input is indicated by an empty line in batch mode. In non batch
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-- mode, exit on bad input.
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