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add git ls-tree --long parser

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Not yet used, but allows getting the size of items in the tree fairly
cheaply.

I noticed that CmdLine.Seek uses ls-tree and the feeds the files into
another long-running process to check their size. That would be an
example of a place that might be sped up by using this. Although in that
particular case, it only needs to know the size of unlocked files, not
locked. And since enabling --long probably doubles the ls-tree runtime
or more, the overhead of using it there may outwweigh the benefit.
This commit is contained in:
Joey Hess 2021-03-23 12:44:29 -04:00
parent d89a9b0f78
commit a8b837aaef
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GPG key ID: DB12DB0FF05F8F38
13 changed files with 97 additions and 56 deletions
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4
Remote/Borg.hs
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@ -243,7 +243,7 @@ getImported :: UUID -> Annex (M.Map BorgArchiveName (Annex [(ImportLocation, (Co
getImported u = M.unions <$> (mapM go . exportedTreeishes =<< getExport u)
where
go t = M.fromList . mapMaybe mk
<$> inRepo (LsTree.lsTreeStrict LsTree.LsTreeNonRecursive t)
<$> inRepo (LsTree.lsTreeStrict LsTree.LsTreeNonRecursive (LsTree.LsTreeLong False) t)
mk ti
| toTreeItemType (LsTree.mode ti) == Just TreeSubtree = Just
@ -255,7 +255,7 @@ getImported u = M.unions <$> (mapM go . exportedTreeishes =<< getExport u)
| otherwise = Nothing
getcontents archivename t = mapMaybe (mkcontents archivename)
<$> inRepo (LsTree.lsTreeStrict LsTree.LsTreeRecursive t)
<$> inRepo (LsTree.lsTreeStrict LsTree.LsTreeRecursive (LsTree.LsTreeLong False) t)
mkcontents archivename ti = do
let f = ThirdPartyPopulated.fromThirdPartyImportLocation $