Metacat

        StringBuffer cbuff = new StringBuffer();

        java.util.Stack st = new java.util.Stack();

        boolean validate = false;

        int c;

        int inx;

        while ((st.empty() || st.size() < 4) && ((c = xmlreader.read()) != -1)) {

            cbuff.append((char) c);

            // "<!DOCTYPE" keyword is found; put it in the stack

            if ((inx = cbuff.toString().indexOf("<!DOCTYPE")) != -1) {

                cbuff = new StringBuffer();

            && (((String) st.peek()).equals("PUBLIC") | ((String) st

                    .pop()).equals("SYSTEM"))

                    && ((String) st.pop()).equals("<!DOCTYPE")) {

            }

        }