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// Copyright 2019 The Gitea Authors.
// All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package git
import (
gitealog ""
cgobject ""
// CommitNodeIndex returns the index for walking commit graph
func (r *Repository) CommitNodeIndex() (cgobject.CommitNodeIndex, *os.File) {
indexPath := path.Join(r.Path, "objects", "info", "commit-graph")
file, err := os.Open(indexPath)
if err == nil {
var index commitgraph.Index
index, err = commitgraph.OpenFileIndex(file)
if err == nil {
return cgobject.NewGraphCommitNodeIndex(index, r.gogitRepo.Storer), file
if !os.IsNotExist(err) {
gitealog.Warn("Unable to read commit-graph for %s: %v", r.Path, err)
return cgobject.NewObjectCommitNodeIndex(r.gogitRepo.Storer), nil
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