func SplitPathVersion()

in module/module.go [536:557]

• 21 lines of code
• 15 McCabe index (conditional complexity)

func SplitPathVersion(path string) (prefix, pathMajor string, ok bool) {
	if strings.HasPrefix(path, "gopkg.in/") {
		return splitGopkgIn(path)
	}

	i := len(path)
	dot := false
	for i > 0 && ('0' <= path[i-1] && path[i-1] <= '9' || path[i-1] == '.') {
		if path[i-1] == '.' {
			dot = true
		}
		i--
	}
	if i <= 1 || i == len(path) || path[i-1] != 'v' || path[i-2] != '/' {
		return path, "", true
	}
	prefix, pathMajor = path[:i-2], path[i-2:]
	if dot || len(pathMajor) <= 2 || pathMajor[2] == '0' || pathMajor == "/v1" {
		return path, "", false
	}
	return prefix, pathMajor, true
}