447e6adabd
If checkout fails for some reason, they're still in a view, and should be able to vpop again.
60 lines
1.4 KiB
Haskell
60 lines
1.4 KiB
Haskell
{- git-annex command
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-
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- Copyright 2014 Joey Hess <id@joeyh.name>
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-
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- Licensed under the GNU AGPL version 3 or higher.
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-}
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module Command.VPop where
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import Command
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import qualified Git
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import qualified Git.Command
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import qualified Git.Ref
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import Types.View
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import Logs.View
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import Command.View (checkoutViewBranch)
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cmd :: Command
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cmd = notBareRepo $
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command "vpop" SectionMetaData "switch back to previous view"
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paramNumber (withParams seek)
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seek :: CmdParams -> CommandSeek
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seek = withWords (commandAction . start)
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start :: [String] -> CommandStart
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start ps = go =<< currentView
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where
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go Nothing = giveup "Not in a view."
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go (Just (v, madj)) = starting "vpop" ai si $ do
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(oldvs, vs) <- splitAt (num - 1)
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. filter (sameparentbranch v)
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. filter (/= v)
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<$> recentViews
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let removeview = mapM_ removeView (v : oldvs)
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ok <- case vs of
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(oldv:_) -> do
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showOutput
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checkoutViewBranch oldv madj
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(\v' madj' -> return (branchView v' madj'))
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_ -> do
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showOutput
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inRepo $ Git.Command.runBool
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[ Param "checkout"
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, Param $ Git.fromRef $ Git.Ref.base $
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viewParentBranch v
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]
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if ok
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then
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next $ do
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removeview
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return True
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else next $ return False
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sameparentbranch a b = viewParentBranch a == viewParentBranch b
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num = fromMaybe 1 $ readish =<< headMaybe ps
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ai = ActionItemOther (Just $ UnquotedString $ show num)
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si = SeekInput ps
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