avoid sync pushing view branches to remotes, and better view branch names
* sync: Avoid pushing view branches to remotes. * Changed the name of view branches to include the parent branch. Existing view branches checked out using an old name will still work. It does not seem useful for sync to push view branches around, because the information in a view branch can entirely be derived from other information in git. And sync doesn't push adjusted branches around either. The better view branch names make it more in line with adjusted branch names, but were also needed to make fromViewBranch be able to return the original branch name. Kept the old view branch names still working. But, when those branches exist in a repo, sync will still try to push them as before. Avoiding that would need more complicated and/or expensive changes to sync. Sponsored-By: Boyd Stephen Smith Jr. on Patreon
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3 changed files with 49 additions and 17 deletions
50
Logs/View.hs
50
Logs/View.hs
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@ -4,7 +4,7 @@
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-
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- This file is stored locally in .git/annex/, not in the git-annex branch.
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-
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- Copyright 2014 Joey Hess <id@joeyh.name>
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- Copyright 2014-2023 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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@ -17,6 +17,7 @@ module Logs.View (
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removeView,
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recentViews,
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branchView,
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fromViewBranch,
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is_branchView,
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prop_branchView_legal,
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) where
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@ -58,7 +59,8 @@ currentView :: Annex (Maybe View)
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currentView = go =<< inRepo Git.Branch.current
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where
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go (Just b) | branchViewPrefix `B.isPrefixOf` fromRef' b =
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headMaybe . filter (\v -> branchView v == b) <$> recentViews
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headMaybe . filter (\v -> branchView v == b || branchViewOld v == b)
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<$> recentViews
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go _ = return Nothing
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branchViewPrefix :: B.ByteString
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@ -67,17 +69,28 @@ branchViewPrefix = "refs/heads/views"
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{- Generates a git branch name for a View.
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-
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- There is no guarantee that each view gets a unique branch name,
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- but the branch name is used to express the view as well as possible.
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- but the branch name is used to express the view as well as possible
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- given the constraints on git branch names. It includes the name of the
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- parent branch, and what metadata is used.
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-}
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branchView :: View -> Git.Branch
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branchView view
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| B.null name = Git.Ref branchViewPrefix
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| otherwise = Git.Ref $ branchViewPrefix <> "/" <> name
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branchView view = Git.Ref $
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branchViewPrefix <> "/" <> basebranch
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<> "(" <> branchViewDesc view False <> ")"
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where
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basebranch = fromRef' (Git.Ref.base (viewParentBranch view))
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{- Old name used for a view did not include the name of the parent branch. -}
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branchViewOld :: View -> Git.Branch
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branchViewOld view = Git.Ref $
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branchViewPrefix <> "/" <> branchViewDesc view True
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branchViewDesc :: View -> Bool -> B.ByteString
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branchViewDesc view pareninvisibles = encodeBS $
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intercalate ";" $ map branchcomp (viewComponents view)
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where
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name = encodeBS $
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intercalate ";" $ map branchcomp (viewComponents view)
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branchcomp c
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| viewVisible c = branchcomp' c
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| viewVisible c || not pareninvisibles = branchcomp' c
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| otherwise = "(" ++ branchcomp' c ++ ")"
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branchcomp' (ViewComponent metafield viewfilter _) = concat
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[ forcelegal (T.unpack (fromMetaField metafield))
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@ -96,9 +109,22 @@ branchView view
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| otherwise = map (\c -> if isAlphaNum c then c else '_') s
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is_branchView :: Git.Branch -> Bool
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is_branchView (Ref b)
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| b == branchViewPrefix = True
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| otherwise = (branchViewPrefix <> "/") `B.isPrefixOf` b
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is_branchView (Ref b) = (branchViewPrefix <> "/") `B.isPrefixOf` b
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{- Converts a view branch as generated by branchView (but not by
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- branchViewOld) back to the parent branch.
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- Has no effect on other branches. -}
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fromViewBranch :: Git.Branch -> Git.Branch
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fromViewBranch b =
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let bs = fromRef' b
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in if (branchViewPrefix <> "/") `B.isPrefixOf` bs
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then
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let (branch, _desc) = separate' (== openparen) (B.drop prefixlen bs)
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in Ref branch
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else b
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where
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prefixlen = B.length branchViewPrefix + 1
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openparen = fromIntegral (ord '(')
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prop_branchView_legal :: View -> Bool
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prop_branchView_legal = Git.Ref.legal False . fromRef . branchView
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