git-annex/Command/VFilter.hs
Joey Hess 3a05d53761
add SeekInput (not yet used)
No behavior changes (hopefully), just adding SeekInput and plumbing it
through to the JSON display code for later use.

Over the course of 2 grueling days.

withFilesNotInGit reimplemented in terms of seekHelper
should be the only possible behavior change. It seems to test as
behaving the same.

Note that seekHelper dummies up the SeekInput in the case where
segmentPaths' gives up on sorting the expanded paths because there are
too many input paths. When SeekInput later gets exposed as a json field,
that will result in it being a little bit wrong in the case where
100 or more paths are passed to a git-annex command. I think this is a
subtle enough problem to not matter. If it does turn out to be a
problem, fixing it would require splitting up the input
parameters into groups of < 100, which would make git ls-files run
perhaps more than is necessary. May want to revisit this, because that
fix seems fairly low-impact.
2020-09-15 15:41:13 -04:00

29 lines
927 B
Haskell

{- git-annex command
-
- Copyright 2014 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
module Command.VFilter where
import Command
import Annex.View
import Command.View (paramView, checkoutViewBranch)
cmd :: Command
cmd = notBareRepo $
command "vfilter" SectionMetaData "filter current view"
paramView (withParams seek)
seek :: CmdParams -> CommandSeek
seek = withWords (commandAction . start)
start :: [String] -> CommandStart
start params = starting "vfilter" (ActionItemOther Nothing) (SeekInput params) $
withCurrentView $ \view -> do
let view' = filterView view $
map parseViewParam $ reverse params
next $ if visibleViewSize view' > visibleViewSize view
then giveup "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