func toSemVer()

in validators/package_validator_linux.go [274:323]

• 35 lines of code
• 11 McCabe index (conditional complexity)

func toSemVer(version string) string {
	// Remove the first non-digit and non-dot character as well as the ones
	// following it.
	// E.g., "1.8.19p1" -> "1.8.19".
	if i := strings.IndexFunc(version, func(c rune) bool {
		if (c < '0' || c > '9') && c != '.' {
			return true
		}
		return false
	}); i != -1 {
		version = version[:i]
	}

	// Remove the trailing dots if there's any, and then returns an empty
	// string if nothing left.
	version = strings.TrimRight(version, ".")
	if version == "" {
		return ""
	}

	numDots := strings.Count(version, ".")
	switch {
	case numDots < semVerDotsCount:
		// Add minor version and patch version.
		// E.g. "1.18" -> "1.18.0" and "481" -> "481.0.0".
		version += strings.Repeat(".0", semVerDotsCount-numDots)
	case numDots > semVerDotsCount:
		// Remove anything beyond the patch version
		// E.g. "2.0.10.4" -> "2.0.10".
		for numDots != semVerDotsCount {
			if i := strings.LastIndex(version, "."); i != -1 {
				version = version[:i]
				numDots--
			}
		}
	}

	// Remove leading zeros in major/minor/patch version.
	// E.g., "2.02"     -> "2.2"
	//       "8.0.0095" -> "8.0.95"
	var subs []string
	for _, s := range strings.Split(version, ".") {
		s := strings.TrimLeft(s, "0")
		if s == "" {
			s = "0"
		}
		subs = append(subs, s)
	}
	return strings.Join(subs, ".")
}