/*
* 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
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*/
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
*/
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