| /* |
| * Copyright (c) 1998, 2014, 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; |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| |
| /** |
| * Responsible for starting up a new DocumentParser |
| * each time its parse method is invoked. Stores a |
| * reference to the dtd. |
| * |
| * @author Sunita Mani |
| */ |
| @SuppressWarnings("serial") // Same-version serialization only |
| public class ParserDelegator extends HTMLEditorKit.Parser implements Serializable { |
| private static final Object DTD_KEY = new Object(); |
| |
| /** |
| * Sets the default DTD. |
| */ |
| 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; |
| } |
| |
| /** |
| * Recreates a DTD from an archived format with the specified {@code name}. |
| * |
| * @param dtd a DTD |
| * @param name the name of the resource, relative to the ParserDelegator class. |
| * @return the DTD with the specified {@code name}. |
| */ |
| 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; |
| } |
| |
| /** |
| * Creates {@code ParserDelegator} with default 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. |
| * @return a stream representing the resource |
| */ |
| static InputStream getResourceAsStream(final String name) { |
| return AccessController.doPrivileged( |
| new PrivilegedAction<InputStream>() { |
| public InputStream run() { |
| return ParserDelegator.class.getResourceAsStream(name); |
| } |
| }); |
| } |
| |
| private void readObject(ObjectInputStream s) |
| throws ClassNotFoundException, IOException { |
| s.defaultReadObject(); |
| setDefaultDTD(); |
| } |
| } |