protected void doOptions()

in geronimo-servlet_3.1_spec/src/main/java/javax/servlet/http/HttpServlet.java [444:495]
46 lines of code
20 McCabe index (conditional complexity)

    protected void doOptions(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        Method[] methods = getAllDeclaredMethods(this.getClass());

        boolean ALLOW_GET = false;
        boolean ALLOW_HEAD = false;
        boolean ALLOW_POST = false;
        boolean ALLOW_PUT = false;
        boolean ALLOW_DELETE = false;
        boolean ALLOW_TRACE = true;
        boolean ALLOW_OPTIONS = true;

        for (int i = 0; i < methods.length; i++) {
            Method m = methods[i];

            if (m.getName().equals("doGet")) {
                ALLOW_GET = true;
                ALLOW_HEAD = true;
            }
            if (m.getName().equals("doPost"))
                ALLOW_POST = true;
            if (m.getName().equals("doPut"))
                ALLOW_PUT = true;
            if (m.getName().equals("doDelete"))
                ALLOW_DELETE = true;

        }

        String allow = null;
        if (ALLOW_GET)
            if (allow == null) allow = METHOD_GET;
        if (ALLOW_HEAD)
            if (allow == null) allow = METHOD_HEAD;
            else allow += ", " + METHOD_HEAD;
        if (ALLOW_POST)
            if (allow == null) allow = METHOD_POST;
            else allow += ", " + METHOD_POST;
        if (ALLOW_PUT)
            if (allow == null) allow = METHOD_PUT;
            else allow += ", " + METHOD_PUT;
        if (ALLOW_DELETE)
            if (allow == null) allow = METHOD_DELETE;
            else allow += ", " + METHOD_DELETE;
        if (ALLOW_TRACE)
            if (allow == null) allow = METHOD_TRACE;
            else allow += ", " + METHOD_TRACE;
        if (ALLOW_OPTIONS)
            if (allow == null) allow = METHOD_OPTIONS;
            else allow += ", " + METHOD_OPTIONS;

        resp.setHeader("Allow", allow);
    }