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/* * Copyright (c) 1998, 2011, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package javax.swing.text.html.parser; import sun.awt.AppContext; import javax.swing.text.html.HTMLEditorKit;import java.io.BufferedInputStream;import java.io.IOException;import java.io.InputStream;import java.io.DataInputStream;import java.io.ObjectInputStream;import java.io.Reader;import java.io.Serializable; /** * Responsible for starting up a new DocumentParser * each time its parse method is invoked. Stores a * reference to the dtd. * * @author  Sunita Mani */ public class ParserDelegator extends HTMLEditorKit.Parser implements Serializable {     private static final Object DTD_KEY = new Object();     protected static void setDefaultDTD() {        getDefaultDTD();    }     private static synchronized DTD getDefaultDTD() {        AppContext appContext = AppContext.getAppContext();         DTD dtd = (DTD) appContext.get(DTD_KEY);         if (dtd == null) {            DTD _dtd = null;            // (PENDING) Hate having to hard code!            String nm = "html32";            try {                _dtd = DTD.getDTD(nm);            } catch (IOException e) {                // (PENDING) UGLY!                System.out.println("Throw an exception: could not get default dtd: " + nm);            }            dtd = createDTD(_dtd, nm);             appContext.put(DTD_KEY, dtd);        }         return dtd;    }     protected static DTD createDTD(DTD dtd, String name) {         InputStream in = null;        boolean debug = true;        try {            String path = name + ".bdtd";            in = getResourceAsStream(path);            if (in != null) {                dtd.read(new DataInputStream(new BufferedInputStream(in)));                dtd.putDTDHash(name, dtd);            }        } catch (Exception e) {            System.out.println(e);        }        return dtd;    }      public ParserDelegator() {        setDefaultDTD();    }     public void parse(Reader r, HTMLEditorKit.ParserCallback cb, boolean ignoreCharSet) throws IOException {        new DocumentParser(getDefaultDTD()).parse(r, cb, ignoreCharSet);    }     /**     * Fetch a resource relative to the ParserDelegator classfile.     * If this is called on 1.2 the loading will occur under the     * protection of a doPrivileged call to allow the ParserDelegator     * to function when used in an applet.     *     * @param name the name of the resource, relative to the     *  ParserDelegator class.     * @returns a stream representing the resource     */    static InputStream getResourceAsStream(String name) {        try {            return ResourceLoader.getResourceAsStream(name);        } catch (Throwable e) {            // If the class doesn't exist or we have some other            // problem we just try to call getResourceAsStream directly.            return ParserDelegator.class.getResourceAsStream(name);        }    }     private void readObject(ObjectInputStream s)        throws ClassNotFoundException, IOException {        s.defaultReadObject();        setDefaultDTD();    }}