dd7b99c860
While writing this documentation, I realized that there needed to be a way to stay in a view like tag=* while adding a filter like tag=work that applies to the same field. So, there are really two ways a view can be refined. It can have a new "field=explicitvalue" filter added to it, which does not change the "shape" of the view, but narrows the files it shows. Or, it can have a new view added, which adds another level of subdirectories. So, added a vfilter command, which takes explicit values to add to the filter, and rejects changes that would change the shape of the view. And, made vadd only accept changes that change the shape of the view. And, changed the View data type slightly; now components that can match multiple metadata values can be visible, or not visible. This commit was sponsored by Stelian Iancu.
36 lines
1.1 KiB
Haskell
36 lines
1.1 KiB
Haskell
{- 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 Annex.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 SectionMetaData "add subdirs to 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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withCurrentView $ \view -> do
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let (view', change) = refineView view $
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map parseViewParam $ 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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Narrowing -> next $ next $ do
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if visibleViewSize view' == visibleViewSize view
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then error "That would not add an additional level of directory structure to the view. To filter the view, use vfilter instead of vadd."
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else checkoutViewBranch view' narrowView
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Widening -> error "Widening view to match more files is not currently supported."
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