Encoding URL delimiters (for GWT)

This is what I do to encode a parameter for my querystring:

public static String encodeUrlDelimiters(String s) {

    if (s == null) {

      return null;

    }

 

    s = s.replaceAll(";", "%2F");

    s = s.replaceAll("/", "%2F");

    s = s.replaceAll(":", "%3A");

    s = s.replaceAll("\\?", "%3F");

    s = s.replaceAll("&", "%26");

    s = s.replaceAll("\\=", "%3D");

    s = s.replaceAll("\\+", "%2B");

    s = s.replaceAll("\\$", "%24");

    s = s.replaceAll(",", "%2C");

    s = s.replaceAll("#", "%23");

 

    return s;

}

This is how I use it:

private String getGoogleLoginUrl() {

    if (cp.getAccessToken() == null && cp.getAccessToken().getThirdPartyLoginData() == null) {

      return null;

    }

    

    String domain = GWT.getHostPageBaseURL();

    String path = Window.Location.getPath();

    String qs = Window.Location.getQueryString();

    String historyToken = History.getToken();

    if (qs == null) {

      qs = "";

    }

    if (domain.matches(".*/") == true) {

      domain = domain.substring(0,domain.length()-1);

    }

    

    String url = domain + path + qs + "#" + historyToken;

    url = URL.encode(url);

    url = Global_String.encodeUrlDelimiters(url);

    String baseUrl = cp.getAccessToken().getThirdPartyLoginData().getGoogleLoginUrl();

    baseUrl = baseUrl.replaceAll("=%2F.*", "=" + url);

    

    return baseUrl;

}