Function OpenFileIndex

plumbing/format/commitgraph/file.go:60–74

OpenFileIndex opens a serialized commit graph file in the format described at https://github.com/git/git/blob/master/Documentation/technical/commit-graph-format.txt Deprecated: This package uses the wrong types for Generation and Index in CommitData. Use the v2 package instead.

(reader io.ReaderAt)

// Deprecated: This package uses the wrong types for Generation and Index in CommitData.
// Use the v2 package instead.
func OpenFileIndex(reader io.ReaderAt) (Index, error) {
	fi := &fileIndex{reader: reader}

	if err := fi.verifyFileHeader(); err != nil {
		return nil, err
	}
	if err := fi.readChunkHeaders(); err != nil {
		return nil, err
	}
	if err := fi.readFanout(); err != nil {
		return nil, err
	}

	return fi, nil
}

func (fi *fileIndex) verifyFileHeader() error {
	// Verify file signature