J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1998-2002 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package javax.swing.text.html.parser; |
| 27 | |
| 28 | import javax.swing.text.html.HTMLEditorKit; |
| 29 | import java.io.BufferedInputStream; |
| 30 | import java.io.IOException; |
| 31 | import java.io.InputStream; |
| 32 | import java.io.DataInputStream; |
| 33 | import java.io.ObjectInputStream; |
| 34 | import java.io.Reader; |
| 35 | import java.io.Serializable; |
| 36 | import java.lang.reflect.Method; |
| 37 | |
| 38 | /** |
| 39 | * Responsible for starting up a new DocumentParser |
| 40 | * each time its parse method is invoked. Stores a |
| 41 | * reference to the dtd. |
| 42 | * |
| 43 | * @author Sunita Mani |
| 44 | */ |
| 45 | |
| 46 | public class ParserDelegator extends HTMLEditorKit.Parser implements Serializable { |
| 47 | |
| 48 | private static DTD dtd = null; |
| 49 | |
| 50 | protected static synchronized void setDefaultDTD() { |
| 51 | if (dtd == null) { |
| 52 | DTD _dtd = null; |
| 53 | // (PENDING) Hate having to hard code! |
| 54 | String nm = "html32"; |
| 55 | try { |
| 56 | _dtd = DTD.getDTD(nm); |
| 57 | } catch (IOException e) { |
| 58 | // (PENDING) UGLY! |
| 59 | System.out.println("Throw an exception: could not get default dtd: " + nm); |
| 60 | } |
| 61 | dtd = createDTD(_dtd, nm); |
| 62 | } |
| 63 | } |
| 64 | |
| 65 | protected static DTD createDTD(DTD dtd, String name) { |
| 66 | |
| 67 | InputStream in = null; |
| 68 | boolean debug = true; |
| 69 | try { |
| 70 | String path = name + ".bdtd"; |
| 71 | in = getResourceAsStream(path); |
| 72 | if (in != null) { |
| 73 | dtd.read(new DataInputStream(new BufferedInputStream(in))); |
| 74 | dtd.putDTDHash(name, dtd); |
| 75 | } |
| 76 | } catch (Exception e) { |
| 77 | System.out.println(e); |
| 78 | } |
| 79 | return dtd; |
| 80 | } |
| 81 | |
| 82 | |
| 83 | public ParserDelegator() { |
| 84 | if (dtd == null) { |
| 85 | setDefaultDTD(); |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | public void parse(Reader r, HTMLEditorKit.ParserCallback cb, boolean ignoreCharSet) throws IOException { |
| 90 | new DocumentParser(dtd).parse(r, cb, ignoreCharSet); |
| 91 | } |
| 92 | |
| 93 | /** |
| 94 | * Fetch a resource relative to the ParserDelegator classfile. |
| 95 | * If this is called on 1.2 the loading will occur under the |
| 96 | * protection of a doPrivileged call to allow the ParserDelegator |
| 97 | * to function when used in an applet. |
| 98 | * |
| 99 | * @param name the name of the resource, relative to the |
| 100 | * ParserDelegator class. |
| 101 | * @returns a stream representing the resource |
| 102 | */ |
| 103 | static InputStream getResourceAsStream(String name) { |
| 104 | try { |
| 105 | return ResourceLoader.getResourceAsStream(name); |
| 106 | } catch (Throwable e) { |
| 107 | // If the class doesn't exist or we have some other |
| 108 | // problem we just try to call getResourceAsStream directly. |
| 109 | return ParserDelegator.class.getResourceAsStream(name); |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | private void readObject(ObjectInputStream s) |
| 114 | throws ClassNotFoundException, IOException { |
| 115 | s.defaultReadObject(); |
| 116 | if (dtd == null) { |
| 117 | setDefaultDTD(); |
| 118 | } |
| 119 | } |
| 120 | } |