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walker: restructure FilterTree into TreeRewriter

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The more generic RewriteNode callback replaces the SelectByName and
PrintExclude functions. The main part of this change is a preparation to
allow using the TreeRewriter for the `repair snapshots` command.
This commit is contained in:
Michael Eischer
2022-12-28 11:04:28 +01:00
parent bc2399fbd9
commit 38dac78180
4 changed files with 103 additions and 48 deletions
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15
cmd/restic/cmd_rewrite.go
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@@ -87,12 +87,19 @@ func rewriteSnapshot(ctx context.Context, repo *repository.Repository, sn *resti
return true
}
rewriter := walker.NewTreeRewriter(walker.RewriteOpts{
RewriteNode: func(node *restic.Node, path string) *restic.Node {
if selectByName(path) {
return node
}
Verbosef(fmt.Sprintf("excluding %s\n", path))
return nil
},
})
return filterAndReplaceSnapshot(ctx, repo, sn,
func(ctx context.Context, sn *restic.Snapshot) (restic.ID, error) {
return walker.FilterTree(ctx, repo, "/", *sn.Tree, &walker.TreeFilterVisitor{
SelectByName: selectByName,
PrintExclude: func(path string) { Verbosef(fmt.Sprintf("excluding %s\n", path)) },
})
return rewriter.RewriteTree(ctx, repo, "/", *sn.Tree)
}, opts.DryRun, opts.Forget, "rewrite")
}