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{- git-annex command
-
- Copyright 2014 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.View where
import Common.Annex
import Command
import qualified Git
import qualified Git.Command
import qualified Git.Ref
import qualified Git.Branch
import Types.View
import Annex.View
import Logs.View
cmd :: Command
cmd = notBareRepo $ notDirect $
command "view" SectionMetaData "enter a view branch"
paramView (withParams seek)
seek :: CmdParams -> CommandSeek
seek = withWords start
start :: [String] -> CommandStart
start [] = error "Specify metadata to include in view"
start ps = do
showStart "view" ""
view <- mkView ps
go view =<< currentView
where
go view Nothing = next $ perform view
go view (Just v)
| v == view = stop
| otherwise = error "Already in a view. Use the vfilter and vadd commands to further refine this view."
perform :: View -> CommandPerform
perform view = do
showAction "searching"
next $ checkoutViewBranch view applyView
paramView :: String
paramView = paramRepeating "FIELD=VALUE"
mkView :: [String] -> Annex View
mkView ps = go =<< inRepo Git.Branch.current
where
go Nothing = error "not on any branch!"
go (Just b) = return $ fst $ refineView (View b []) $
map parseViewParam $ reverse ps
checkoutViewBranch :: View -> (View -> Annex Git.Branch) -> CommandCleanup
checkoutViewBranch view mkbranch = do
here <- liftIO getCurrentDirectory
branch <- mkbranch view
showOutput
ok <- inRepo $ Git.Command.runBool
[ Param "checkout"
, Param (Git.fromRef $ Git.Ref.base branch)
]
when ok $ do
setView view
{- A git repo can easily have empty directories in it,
- and this pollutes the view, so remove them. -}
top <- fromRepo Git.repoPath
liftIO $ removeemptydirs top
unlessM (liftIO $ doesDirectoryExist here) $ do
showLongNote (cwdmissing top)
return ok
where
removeemptydirs top = mapM_ (tryIO . removeDirectory)
=<< dirTreeRecursiveSkipping (".git" `isSuffixOf`) top
cwdmissing top = unlines
[ "This view does not include the subdirectory you are currently in."
, "Perhaps you should: cd " ++ top
]
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