123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147 |
- /*
- * Copyright 1999-2005 The Apache Software Foundation.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
- /* $Id$ */
-
- package org.apache.fop.render.xml;
-
- import org.apache.commons.logging.Log;
- import org.apache.commons.logging.LogFactory;
- import org.apache.fop.render.Renderer;
- import org.apache.fop.render.XMLHandler;
- import org.apache.fop.render.RendererContext;
-
- import org.w3c.dom.Document;
- import org.w3c.dom.Node;
- import org.w3c.dom.NamedNodeMap;
- import org.w3c.dom.Attr;
- import org.xml.sax.SAXException;
- import org.xml.sax.helpers.AttributesImpl;
-
- import javax.xml.transform.sax.TransformerHandler;
-
- /**
- * XML handler for the XML renderer.
- */
- public class XMLXMLHandler implements XMLHandler {
-
- /** Key for getting the TransformerHandler from the RendererContext */
- public static final String HANDLER = "handler";
-
- /** Logging instance */
- private static Log log = LogFactory.getLog(XMLXMLHandler.class);
-
- private AttributesImpl atts = new AttributesImpl();
-
- /** @see org.apache.fop.render.XMLHandler */
- public void handleXML(RendererContext context,
- org.w3c.dom.Document doc, String ns) throws Exception {
- TransformerHandler handler = (TransformerHandler) context.getProperty(HANDLER);
-
- writeDocument(doc, handler);
- }
-
- /**
- * Writes the given document using the given TransformerHandler.
- * @param doc DOM document
- * @param handler TransformerHandler to write to
- * @throws SAXException In case of a problem while writing XML
- */
- public void writeDocument(Document doc,
- TransformerHandler handler) throws SAXException {
- for (Node n = doc.getFirstChild(); n != null;
- n = n.getNextSibling()) {
- writeNode(n, handler);
- }
- }
-
- /**
- * Writes a node using the given writer.
- * @param node node to serialize
- * @param handler TransformerHandler to write to
- * @throws SAXException In case of a problem while writing XML
- */
- public void writeNode(Node node, TransformerHandler handler) throws SAXException {
- char[] ca;
- switch (node.getNodeType()) {
- case Node.ELEMENT_NODE:
- atts.clear();
-
- if (node.hasAttributes()) {
- NamedNodeMap attr = node.getAttributes();
- int len = attr.getLength();
- for (int i = 0; i < len; i++) {
- Attr a = (Attr) attr.item(i);
- atts.addAttribute("", a.getNodeName(), a.getNodeName(),
- "CDATA", a.getNodeValue());
- }
- }
- handler.startElement(node.getNamespaceURI(),
- node.getLocalName(), node.getLocalName(), atts);
-
- Node c = node.getFirstChild();
- if (c != null) {
- for (; c != null; c = c.getNextSibling()) {
- writeNode(c, handler);
- }
- }
- handler.endElement(node.getNamespaceURI(), node.getNodeName(), node.getNodeName());
- break;
- case Node.TEXT_NODE:
- ca = node.getNodeValue().toCharArray();
- handler.characters(ca, 0, ca.length);
- break;
- case Node.CDATA_SECTION_NODE:
- ca = node.getNodeValue().toCharArray();
- handler.startCDATA();
- handler.characters(ca, 0, ca.length);
- handler.endCDATA();
- break;
- case Node.ENTITY_REFERENCE_NODE:
- log.warn("Ignoring ENTITY_REFERENCE_NODE. NYI");
- /*
- writer.write("&");
- writer.write();
- writer.write(";");
- */
- break;
- case Node.PROCESSING_INSTRUCTION_NODE:
- handler.processingInstruction(node.getNodeName(), node.getNodeValue());
- break;
- case Node.COMMENT_NODE:
- ca = node.getNodeValue().toCharArray();
- handler.comment(ca, 0, ca.length);
- break;
- case Node.DOCUMENT_TYPE_NODE:
- break;
- default:
- throw new IllegalArgumentException("Unexpected node type ("
- + node.getNodeType() + ")");
- }
- }
-
- /** @see org.apache.fop.render.XMLHandler#supportsRenderer(org.apache.fop.render.Renderer) */
- public boolean supportsRenderer(Renderer renderer) {
- return (renderer instanceof XMLRenderer);
- }
-
- /** @see org.apache.fop.render.XMLHandler#getNamespace() */
- public String getNamespace() {
- return null; //Handle all XML content
- }
-
- }
|