private void initializePath()

in serializer/src/main/java/org/apache/xml/serializer/utils/URI.java [725:842]
93 lines of code
29 McCabe index (conditional complexity)

  private void initializePath(String p_uriSpec) throws MalformedURIException
  {

    if (p_uriSpec == null)
    {
      throw new MalformedURIException(
        "Cannot initialize path from null string!");
    }

    int index = 0;
    int start = 0;
    int end = p_uriSpec.length();
    char testChar = '\0';

    // path - everything up to query string or fragment
    while (index < end)
    {
      testChar = p_uriSpec.charAt(index);

      if (testChar == '?' || testChar == '#')
      {
        break;
      }

      // check for valid escape sequence
      if (testChar == '%')
      {
        if (index + 2 >= end ||!isHex(p_uriSpec.charAt(index + 1))
                ||!isHex(p_uriSpec.charAt(index + 2)))
        {
          throw new MalformedURIException(
            Utils.messages.createMessage(MsgKey.ER_PATH_CONTAINS_INVALID_ESCAPE_SEQUENCE, null)); //"Path contains invalid escape sequence!");
        }
      }
      else if (!isReservedCharacter(testChar)
               &&!isUnreservedCharacter(testChar))
      {
        if ('\\' != testChar)
          throw new MalformedURIException(Utils.messages.createMessage(MsgKey.ER_PATH_INVALID_CHAR, new Object[]{String.valueOf(testChar)})); //"Path contains invalid character: "
                                          //+ testChar);
      }

      index++;
    }

    m_path = p_uriSpec.substring(start, index);

    // query - starts with ? and up to fragment or end
    if (testChar == '?')
    {
      index++;

      start = index;

      while (index < end)
      {
        testChar = p_uriSpec.charAt(index);

        if (testChar == '#')
        {
          break;
        }

        if (testChar == '%')
        {
          if (index + 2 >= end ||!isHex(p_uriSpec.charAt(index + 1))
                  ||!isHex(p_uriSpec.charAt(index + 2)))
          {
            throw new MalformedURIException(
              "Query string contains invalid escape sequence!");
          }
        }
        else if (!isReservedCharacter(testChar)
                 &&!isUnreservedCharacter(testChar))
        {
          throw new MalformedURIException(
            "Query string contains invalid character:" + testChar);
        }

        index++;
      }

      m_queryString = p_uriSpec.substring(start, index);
    }

    // fragment - starts with #
    if (testChar == '#')
    {
      index++;

      start = index;

      while (index < end)
      {
        testChar = p_uriSpec.charAt(index);

        if (testChar == '%')
        {
          if (index + 2 >= end ||!isHex(p_uriSpec.charAt(index + 1))
                  ||!isHex(p_uriSpec.charAt(index + 2)))
          {
            throw new MalformedURIException(
              "Fragment contains invalid escape sequence!");
          }
        }
        else if (!isReservedCharacter(testChar)
                 &&!isUnreservedCharacter(testChar))
        {
          throw new MalformedURIException(
            "Fragment contains invalid character:" + testChar);
        }

        index++;
      }

      m_fragment = p_uriSpec.substring(start, index);
    }
  }