code: private static String convertFromWindowsPath(String path)
    {
      int colon = path.indexOf(':');
      int length = path.length();
      char ch;
  
      if (colon == 1 && (ch = path.charAt(0)) != '/' && ch != '\\')
        return "/" + path.charAt(0) + ":/" + path.substring(2);
      else if (length > 1
               && ((ch = path.charAt(0)) == '/' || ch == '\\')
               && ((ch = path.charAt(1)) == '/' || ch == '\\')) {
        if (colon < 0)
          return "/:" + path;
  
        for (int i = colon - 2; i > 1; i--) {
          if ((ch = path.charAt(i)) != '/' && ch != '\\')
            return "/:" + path;
        }
  
        ch = path.charAt(colon - 1);
  
        if (ch >= 'a' && ch <= 'z' || ch >= 'A' && ch <= 'Z')
          return path.substring(colon - 2);
        else
          return "/:" + path;
      }
      else
        return path;
    }
docs: a:xxx -> /a:xxx
  ///a:xxx -> /a:xxx
  //xxx -> /:/xxx