/*
* Copyright (c) 2010. Stephen Connolly.
* Copyright (c) 2006. Michael Hartle <mhartle@rbg.informatik.tu-darmstadt.de>.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package com.github.stephenc.javaisotools.sabre.impl;
import com.github.stephenc.javaisotools.sabre.ContentHandler;
import com.github.stephenc.javaisotools.sabre.DataReference;
import com.github.stephenc.javaisotools.sabre.Element;
import com.github.stephenc.javaisotools.sabre.Fixup;
import com.github.stephenc.javaisotools.sabre.HandlerException;
import com.github.stephenc.javaisotools.sabre.StructureHandler;
public class DebugStreamHandler extends ChainingStreamHandler {
private long position = 0;
public DebugStreamHandler(StructureHandler chainedStructureHandler, ContentHandler chainedContentHandler) {
super(chainedStructureHandler, chainedContentHandler);
}
public void startDocument() throws HandlerException {
// Show what is happening
System.out.println("document starts");
// Delegate to super class
super.startDocument();
}
public void startElement(Element element) throws HandlerException {
// Show what is happening
System.out.println("node(" + element + ") @" + position);
this.position += 8;
// Delegate to super class
super.startElement(element);
}
public void data(DataReference reference) throws HandlerException {
long length = 0;
// Show what is happening
length = reference.getLength();
System.out.println("data @" + this.position + " for " + length);
this.position += length;
// Delegate to super class
super.data(reference);
}
public Fixup fixup(DataReference reference) throws HandlerException {
Fixup fixup = null;
long length = 0;
// Show what is happening
length = reference.getLength();
if (length == -1) {
throw new HandlerException("Cannot fixup unknown length.");
}
System.out.println("fixup @" + this.position + " for " + length);
// Delegate to super class
fixup = super.fixup(reference);
return fixup;
}
public void endElement() throws HandlerException {
super.endElement();
}
public void endDocument() throws HandlerException {
super.endDocument();
}
}