func FindSequenceNumberFromConfig()

in pkg/seqnumutil/seqnum.go [21:43]

• 23 lines of code
• 5 McCabe index (conditional complexity)

func FindSequenceNumberFromConfig(path, fileExtension string, extensionName string) (int, error) {
	g, err := filepath.Glob(filepath.Join(path, fmt.Sprintf("%s.*%s", extensionName, fileExtension)))
	if err != nil {
		return 0, err
	}
	seqs := make([]int, len(g))
	for _, v := range g {
		f := filepath.Base(v)
		fileNameWithoutExtension := strings.TrimSuffix(f, filepath.Ext(f))
		dotAndSequenceNumberString := filepath.Ext(fileNameWithoutExtension) // returns something like ".<sequenceNumber>"
		sequenceNumberString := dotAndSequenceNumberString[1:]               // Remove '.' in the front
		i, err := strconv.Atoi(sequenceNumberString)
		if err != nil {
			continue // continue to the next filename if Atoi fails
		}
		seqs = append(seqs, i)
	}
	if len(seqs) == 0 {
		return 0, fmt.Errorf("can't find out seqnum from %s, not enough files", path)
	}
	sort.Sort(sort.Reverse(sort.IntSlice(seqs)))
	return seqs[0], nil
}