48 lines
1.1 KiB
Haskell
48 lines
1.1 KiB
Haskell
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{- git-annex command
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-
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- Copyright 2014 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 Command.VAdd where
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import Common.Annex
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import Command
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import Types.View
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import Annex.View
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import Logs.View
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import Command.View (paramView, parseViewParam, checkoutViewBranch)
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def :: [Command]
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def = [notBareRepo $ notDirect $
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command "vadd" paramView seek SectionUtility "refine current view"]
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seek :: CommandSeek
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seek = withWords start
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start :: [String] -> CommandStart
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start params = do
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showStart "vadd" ""
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go =<< currentView
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where
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go Nothing = error "Not in a view."
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go (Just view) = do
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let (view', change) = calc view Unchanged (reverse params)
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case change of
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Unchanged -> do
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showNote "unchanged"
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next $ next $ return True
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Widening -> error "Widening view to match more files is not currently supported."
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Narrowing -> next $ perform view'
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calc v c [] = (v, c)
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calc v c (p:ps) =
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let (v', c') = uncurry (refineView v) (parseViewParam p)
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in calc v' (max c c') ps
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perform :: View -> CommandPerform
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perform view = do
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branch <- narrowView view
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next $ checkoutViewBranch view branch
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