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package repository
import (
"errors"
"os"
commitgraphread "codeberg.org/lindenii/furgit/format/commitgraph/read"
objectid "codeberg.org/lindenii/furgit/object/id"
)
func openCommitGraph(root *os.Root, algo objectid.Algorithm) (*commitgraphread.Reader, error) {
reader, err := commitgraphread.Open(root, algo, commitgraphread.OpenChain)
if err == nil {
return reader, nil
}
var malformed *commitgraphread.MalformedError
if errors.As(err, &malformed) &&
malformed.Path == "info/commit-graphs/commit-graph-chain" &&
malformed.Reason == "missing commit-graph-chain" {
reader, err = commitgraphread.Open(root, algo, commitgraphread.OpenSingle)
if errors.Is(err, os.ErrNotExist) {
return nil, nil //nolint:nilnil
}
return reader, err
}
return nil, err
}
// CommitGraph returns the configured commit-graph reader, if available.
//
// Labels: Life-Parent, Close-No.
func (repo *Repository) CommitGraph() *commitgraphread.Reader {
return repo.commitGraph
}
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