func matchUserIndexValue()

in internal/resources/utils/user/user.go [227:268]

• 34 lines of code
• 12 McCabe index (conditional complexity)

func matchUserIndexValue(value string, idx int) lineFunc {
	var leadColon string
	if idx > 0 {
		leadColon = ":"
	}
	substr := []byte(leadColon + value + ":")
	return func(line []byte) (v any, err error) {
		if !bytes.Contains(line, substr) || bytes.Count(line, []byte(":")) < 6 {
			return
		}
		// kevin:x:1005:1006::/home/kevin:/usr/bin/zsh
		parts := strings.SplitN(string(line), ":", 7)
		if len(parts) < 6 || parts[idx] != value || parts[0] == "" ||
			parts[0][0] == '+' || parts[0][0] == '-' {
			return
		}
		if _, err := strconv.Atoi(parts[2]); err != nil {
			//nolint:nilerr
			return nil, nil
		}
		if _, err := strconv.Atoi(parts[3]); err != nil {
			//nolint:nilerr
			return nil, nil
		}
		u := &User{
			Username: parts[0],
			Uid:      parts[2],
			Gid:      parts[3],
			Name:     parts[4],
			HomeDir:  parts[5],
		}
		// The pw_gecos field isn't quite standardized. Some docs
		// say: "It is expected to be a comma separated list of
		// personal data where the first item is the full name of the
		// user."
		if i := strings.Index(u.Name, ","); i >= 0 {
			u.Name = u.Name[:i]
		}

		return u, nil
	}
}