5f9bf51438
* sync: When run in a view branch, refresh the view branch to reflect any
changes that have been made to the parent branch or metadata.
This is basically working, but probably needs some more work to deal with
all the edge cases of things sync does.
Sponsored-by: Lawrence Brogan on Patreon
125 lines
3.8 KiB
Haskell
125 lines
3.8 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.View where
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import Command
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import qualified Annex
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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 qualified Git.Branch
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import qualified Git.LsFiles as LsFiles
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import Git.FilePath
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import Git.Status
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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 qualified System.FilePath.ByteString as P
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cmd :: Command
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cmd = notBareRepo $
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command "view" SectionMetaData "enter a view branch"
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paramView (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 [] = giveup "Specify metadata to include in view"
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start ps = ifM safeToEnterView
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( do
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view <- mkView ps
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go view =<< currentView
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, giveup "Not safe to enter view."
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)
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where
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ai = ActionItemOther Nothing
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si = SeekInput ps
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go view Nothing = starting "view" ai si $
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perform view
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go view (Just v)
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| v == view = stop
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| otherwise = giveup "Already in a view. Use the vfilter and vadd commands to further refine this view."
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safeToEnterView :: Annex Bool
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safeToEnterView = do
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(l, cleanup) <- inRepo $ getStatus [] []
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case filter dangerous l of
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[] -> liftIO cleanup
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_ -> do
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warning "Your uncommitted changes would be lost when entering a view."
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void $ liftIO cleanup
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return False
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where
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dangerous (StagedUnstaged { staged = Nothing, unstaged = Nothing }) = False
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-- Untracked files will not be affected by entering a view,
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-- so are not dangerous.
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dangerous (StagedUnstaged { staged = Just (Untracked _), unstaged = Nothing }) = False
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dangerous (StagedUnstaged { unstaged = Just (Untracked _), staged = Nothing }) = False
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dangerous (StagedUnstaged { unstaged = Just (Untracked _), staged = Just (Untracked _) }) = False
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-- Staged changes would have their modifications either be
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-- lost when entering a view, or committed as part of the view.
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-- Either is dangerous because upon leaving the view; the staged
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-- changes would be lost.
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dangerous (StagedUnstaged { staged = Just _ }) = True
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-- Unstaged changes to annexed files would get lost when entering a
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-- view.
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dangerous (StagedUnstaged { unstaged = Just _ }) = True
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perform :: View -> CommandPerform
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perform view = do
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showAction "searching"
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next $ checkoutViewBranch view applyView
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paramView :: String
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paramView = paramRepeating "TAG FIELD=GLOB ?TAG FIELD?=GLOB FIELD!=VALUE"
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mkView :: [String] -> Annex View
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mkView ps = go =<< inRepo Git.Branch.current
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where
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go Nothing = giveup "not on any branch!"
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go (Just b) = do
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vu <- annexViewUnsetDirectory <$> Annex.getGitConfig
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return $ fst $ refineView (View b []) $
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map (parseViewParam vu) (reverse ps)
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checkoutViewBranch :: View -> (View -> Annex Git.Branch) -> CommandCleanup
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checkoutViewBranch view mkbranch = do
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here <- liftIO getCurrentDirectory
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branch <- mkbranch view
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showOutput
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ok <- inRepo $ Git.Command.runBool
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[ Param "checkout"
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, Param (Git.fromRef $ Git.Ref.base branch)
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]
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when ok $ do
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setView view
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{- A git repo can easily have empty directories in it,
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- and this pollutes the view, so remove them.
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- (However, emptry directories used by submodules are not
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- removed.) -}
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top <- liftIO . absPath =<< fromRepo Git.repoPath
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(l, cleanup) <- inRepo $
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LsFiles.notInRepoIncludingEmptyDirectories [] False [top]
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forM_ l (removeemptydir top)
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liftIO $ void cleanup
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unlessM (liftIO $ doesDirectoryExist here) $ do
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showLongNote (cwdmissing (fromRawFilePath top))
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return ok
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where
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removeemptydir top d = do
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p <- inRepo $ toTopFilePath d
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liftIO $ tryIO $ removeDirectory $
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fromRawFilePath $ (top P.</> getTopFilePath p)
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cwdmissing top = unlines
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[ "This view does not include the subdirectory you are currently in."
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, "Perhaps you should: cd " ++ top
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]
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