git-annex/Command/VFilter.hs
Joey Hess c2e8c21ca6 view, vfilter: Add support for filtering tags and values out of a view, using !tag and field!=value.
Note that negated globs are not supported. Would have complicated the code
to add them, without changing the data type serialization in a
non-backwards-compatable way.

This commit was sponsored by Denver Gingerich.
2014-03-02 14:53:19 -04:00

30 lines
886 B
Haskell

{- git-annex command
-
- Copyright 2014 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.VFilter where
import Common.Annex
import Command
import Annex.View
import Command.View (paramView, checkoutViewBranch)
def :: [Command]
def = [notBareRepo $ notDirect $
command "vfilter" paramView seek SectionMetaData "filter current view"]
seek :: CommandSeek
seek = withWords start
start :: [String] -> CommandStart
start params = do
showStart "vfilter" ""
withCurrentView $ \view -> do
let view' = filterView view $
map parseViewParam $ reverse params
next $ next $ if visibleViewSize view' > visibleViewSize view
then error "That would add an additional level of directory structure to the view, rather than filtering it. If you want to do that, use vadd instead of vfilter."
else checkoutViewBranch view' narrowView