return fr.nb
}

// sparseFileReader is a fileReader for reading data from a sparse file entry.
type sparseFileReader struct {
	fr  fileReader  // Underlying fileReader
	sp  sparseHoles // Normalized list of sparse holes
	pos int64       // Current position in sparse file
}

func (sr *sparseFileReader) Read(b []byte) (n int, err error) {
	finished := int64(len(b)) >= sr.logicalRemaining()
	if finished {