/*
* 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 java.io.IOException;
import java.io.InputStream;
import java.util.Stack;
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.StreamHandler;
import org.apache.commons.lang.StringEscapeUtils;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
public class XMLAtomHandler implements StreamHandler {
private ContentHandler contentHandler = null;
private String namespace = null;
private String prefix = null;
private Stack elements = null;
public XMLAtomHandler(ContentHandler contentHandler, String namespace, String prefix) {
this.contentHandler = contentHandler;
this.namespace = namespace;
this.prefix = prefix;
this.elements = new Stack();
}
public void startDocument() throws HandlerException {
try {
this.contentHandler.startElement(this.namespace, "root", this.prefix + ":root", null);
} catch (SAXException e) {
throw new HandlerException(e);
}
}
public void startElement(Element element) throws HandlerException {
try {
this.elements.push(element);
this.contentHandler
.startElement(this.namespace, element.toString(), this.prefix + ":" + element.toString(), null);
} catch (SAXException e) {
throw new HandlerException(e);
}
}
public void data(DataReference reference) throws HandlerException {
long showLength = 0;
try {
InputStream inputStream = null;
byte[] buffer = null;
String data = null;
long length = reference.getLength();
if (length > 32) {
showLength = 32;
} else {
showLength = length;
}
buffer = new byte[(int) showLength];
inputStream = reference.createInputStream();
inputStream.read(buffer);
inputStream.close();
data = new String(buffer);
data = StringEscapeUtils.escapeJava(data);
this.contentHandler.characters(data.toCharArray(), 0, data.length());
} catch (SAXException e) {
throw new HandlerException(e);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public Fixup fixup(DataReference reference) throws HandlerException {
throw new HandlerException("Cannot handle fixup in SAX.");
}
public long mark() throws HandlerException {
throw new HandlerException("Cannot mark position in SAX.");
}
public void endElement() throws HandlerException {
Element element = null;
try {
element = (Element) this.elements.pop();
this.contentHandler.endElement(this.namespace, element.toString(), this.prefix + ":" + element.toString());
} catch (SAXException e) {
throw new HandlerException(e);
}
}
public void endDocument() throws HandlerException {
try {
this.contentHandler.endElement(this.namespace, "root", this.prefix + ":root");
} catch (SAXException e) {
throw new HandlerException(e);
}
}
}