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/*
* $Id: XMLXMLHandler.java,v 1.3 2003/03/07 09:46:34 jeremias Exp $
* ============================================================================
* The Apache Software License, Version 1.1
* ============================================================================
*
* Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modifica-
* tion, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The end-user documentation included with the redistribution, if any, must
* include the following acknowledgment: "This product includes software
* developed by the Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself, if
* and wherever such third-party acknowledgments normally appear.
*
* 4. The names "FOP" and "Apache Software Foundation" must not be used to
* endorse or promote products derived from this software without prior
* written permission. For written permission, please contact
* apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache", nor may
* "Apache" appear in their name, without prior written permission of the
* Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
* DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ============================================================================
*
* This software consists of voluntary contributions made by many individuals
* on behalf of the Apache Software Foundation and was originally created by
* James Tauber <jtauber@jtauber.com>. For more information on the Apache
* Software Foundation, please see <http://www.apache.org/>.
*/
package org.apache.fop.render.xml;
import org.apache.fop.render.XMLHandler;
import org.apache.fop.render.RendererContext;
import org.apache.batik.dom.util.DOMUtilities;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Attr;
import java.io.Writer;
import java.io.IOException;
/**
* XML handler for the XML renderer.
*/
public class XMLXMLHandler implements XMLHandler {
/** Key for getting the Writer from the RendererContext */
public static final String WRITER = "writer";
/**
* @see org.apache.fop.render.XMLHandler#handleXML(RendererContext, Document, String)
*/
public void handleXML(RendererContext context, Document doc,
String ns) throws Exception {
Writer writer = (Writer) context.getProperty(WRITER);
String svg = "http://www.w3.org/2000/svg";
// actually both do the same thing but one requires
// batik
if (svg.equals(ns)) {
DOMUtilities.writeDocument(doc, writer);
} else {
writeDocument(doc, writer);
}
writer.write("\n");
}
/**
* Writes the given document using the given writer.
* @param doc DOM document
* @param writer Writer to write to
* @throws IOException In case of an I/O problem
*/
public static void writeDocument(Document doc,
Writer writer) throws IOException {
for (Node n = doc.getFirstChild(); n != null;
n = n.getNextSibling()) {
writeNode(n, writer);
}
}
/**
* Writes a node using the given writer.
* @param node node to serialize
* @param writer Writer to write to
* @throws IOException In case of an I/O problem
*/
public static void writeNode(Node node, Writer writer) throws IOException {
switch (node.getNodeType()) {
case Node.ELEMENT_NODE:
writer.write("<");
writer.write(node.getNodeName());
if (node.hasAttributes()) {
NamedNodeMap attr = node.getAttributes();
int len = attr.getLength();
for (int i = 0; i < len; i++) {
Attr a = (Attr) attr.item(i);
writer.write(" ");
writer.write(a.getNodeName());
writer.write("=\"");
writer.write(contentToString(a.getNodeValue()));
writer.write("\"");
}
}
Node c = node.getFirstChild();
if (c != null) {
writer.write(">");
for (; c != null; c = c.getNextSibling()) {
writeNode(c, writer);
}
writer.write("</");
writer.write(node.getNodeName());
writer.write(">");
} else {
writer.write("/>");
}
break;
case Node.TEXT_NODE:
writer.write(contentToString(node.getNodeValue()));
break;
case Node.CDATA_SECTION_NODE:
writer.write("<![CDATA[");
writer.write(node.getNodeValue());
writer.write("]]>");
break;
case Node.ENTITY_REFERENCE_NODE:
writer.write("&");
writer.write(node.getNodeName());
writer.write(";");
break;
case Node.PROCESSING_INSTRUCTION_NODE:
writer.write("<?");
writer.write(node.getNodeName());
writer.write(node.getNodeValue());
writer.write("?>");
break;
case Node.COMMENT_NODE:
writer.write("<!--");
writer.write(node.getNodeValue());
writer.write("-->");
break;
case Node.DOCUMENT_TYPE_NODE:
break;
default:
throw new IllegalArgumentException("Unexpected node type ("
+ node.getNodeType() + ")");
}
}
/**
* Returns the given content value transformed to replace invalid
* characters with entities.
* @param s content value
* @return encoded value
*/
public static String contentToString(String s) {
StringBuffer result = new StringBuffer();
for (int i = 0; i < s.length(); i++) {
char c = s.charAt(i);
switch (c) {
case '<':
result.append("<");
break;
case '>':
result.append(">");
break;
case '&':
result.append("&");
break;
case '"':
result.append(""");
break;
case '\'':
result.append("'");
break;
default:
result.append(c);
}
}
return result.toString();
}
}
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