package net.sf.saxon.dom;
import net.sf.saxon.event.PipelineConfiguration;
import net.sf.saxon.event.Receiver;
import net.sf.saxon.event.ReceiverOptions;
import net.sf.saxon.om.NamePool;
import net.sf.saxon.om.NamespaceConstant;
import net.sf.saxon.om.StandardNames;
import net.sf.saxon.trans.XPathException;
import org.w3c.dom.*;
/**
* DOMWriter is a Receiver that attaches the result tree to a specified Node in a DOM Document
*/
public class DOMWriter implements Receiver {
private PipelineConfiguration pipe;
private NamePool namePool;
private Node currentNode;
private Document document;
private Node nextSibling;
private int level = 0;
private boolean canNormalize = true;
private String systemId;
/**
* Set the pipelineConfiguration
*/
public void setPipelineConfiguration(PipelineConfiguration pipe) {
this.pipe = pipe;
namePool = pipe.getConfiguration().getNamePool();
}
/**
* Get the pipeline configuration used for this document
*/
public PipelineConfiguration getPipelineConfiguration() {
return pipe;
}
/**
* Set the System ID of the destination tree
*/
public void setSystemId(String systemId) {
this.systemId = systemId;
}
/**
* Notify an unparsed entity URI.
*
* @param name The name of the unparsed entity
* @param systemID The system identifier of the unparsed entity
* @param publicID The public identifier of the unparsed entity
*/
public void setUnparsedEntity(String name, String systemID, String publicID) throws XPathException {
// no-op
}
/**
* Get the system identifier that was set with setSystemId.
*
* @return The system identifier that was set with setSystemId,
* or null if setSystemId was not called.
*/
public String getSystemId() {
return systemId;
}
/**
* Start of the document.
*/
public void open () {}
/**
* End of the document.
*/
public void close () {}
/**
* Start of a document node.
*/
public void startDocument(int properties) throws XPathException {}
/**
* Notify the end of a document node
*/
public void endDocument() throws XPathException {}
/**
* Start of an element.
*/
public void startElement (int nameCode, int typeCode, int locationId, int properties) throws XPathException {
String qname = namePool.getDisplayName(nameCode);
String uri = namePool.getURI(nameCode);
try {
Element element = document.createElementNS(("".equals(uri) ? null : uri), qname);
if (nextSibling != null && level == 0) {
currentNode.insertBefore(element, nextSibling);
} else {
currentNode.appendChild(element);
}
currentNode = element;
} catch (DOMException err) {
throw new XPathException(err);
}
level++;
}
public void namespace (int namespaceCode, int properties) throws XPathException {
try {
String prefix = namePool.getPrefixFromNamespaceCode(namespaceCode);
String uri = namePool.getURIFromNamespaceCode(namespaceCode);
Element element = (Element)currentNode;
if (!(uri.equals(NamespaceConstant.XML))) {
if (prefix.length() == 0) {
element.setAttributeNS(NamespaceConstant.XMLNS, "xmlns", uri);
} else {
element.setAttributeNS(NamespaceConstant.XMLNS, "xmlns:" + prefix, uri);
}
}
} catch (DOMException err) {
throw new XPathException(err);
}
}
public void attribute (int nameCode, int typeCode, CharSequence value, int locationId, int properties)
throws XPathException {
String qname = namePool.getDisplayName(nameCode);
String uri = namePool.getURI(nameCode);
try {
Element element = (Element)currentNode;
element.setAttributeNS(("".equals(uri) ? null : uri), qname, value.toString());
// The following code assumes JDK 1.5 or JAXP 1.3
if ((nameCode & NamePool.FP_MASK) == StandardNames.XML_ID || (properties & ReceiverOptions.IS_ID) != 0) {
String localName = namePool.getLocalName(nameCode);
element.setIdAttributeNS(uri, localName, true);
}
} catch (DOMException err) {
throw new XPathException(err);
}
}
public void startContent() throws XPathException {}
/**
* End of an element.
*/
public void endElement () throws XPathException {
if (canNormalize) {
try {
currentNode.normalize();
} catch (Throwable err) {
canNormalize = false;
} // in case it's a Level 1 DOM
}
currentNode = currentNode.getParentNode();
level--;
}
/**
* Character data.
*/
public void characters (CharSequence chars, int locationId, int properties) throws XPathException
{
try {
Text text = document.createTextNode(chars.toString());
if (nextSibling != null && level == 0) {
currentNode.insertBefore(text, nextSibling);
} else {
currentNode.appendChild(text);
}
} catch (DOMException err) {
throw new XPathException(err);
}
}
/**
* Handle a processing instruction.
*/
public void processingInstruction (String target, CharSequence data, int locationId, int properties)
throws XPathException
{
try {
ProcessingInstruction pi =
document.createProcessingInstruction(target, data.toString());
if (nextSibling != null && level == 0) {
currentNode.insertBefore(pi, nextSibling);
} else {
currentNode.appendChild(pi);
}
} catch (DOMException err) {
throw new XPathException(err);
}
}
/**
* Handle a comment.
*/
public void comment (CharSequence chars, int locationId, int properties) throws XPathException
{
try {
Comment comment = document.createComment(chars.toString());
if (nextSibling != null && level == 0) {
currentNode.insertBefore(comment, nextSibling);
} else {
currentNode.appendChild(comment);
}
} catch (DOMException err) {
throw new XPathException(err);
}
}
/**
* Ask whether this Receiver (or the downstream pipeline) makes any use of the type annotations
* supplied on element and attribute events
* @return true if the Receiver makes any use of this information. If false, the caller
* may supply untyped nodes instead of supplying the type annotation
*/
public boolean usesTypeAnnotations() {
return false;
}
/**
* Set the attachment point for the new subtree
* @param node the node to which the new subtree will be attached
*/
public void setNode (Node node) {
if (node == null) {
return;
}
currentNode = node;
if (node.getNodeType() == Node.DOCUMENT_NODE) {
document = (Document)node;
} else {
document = currentNode.getOwnerDocument();
}
}
/**
* Set next sibling
* @param nextSibling the node, which must be a child of the attachment point, before which the new subtree
* will be created. If this is null the new subtree will be added after any existing children of the
* attachment point.
*/
public void setNextSibling(Node nextSibling) {
this.nextSibling = nextSibling;
}
}
//
// The contents of this file are subject to the Mozilla Public License Version 1.0 (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.mozilla.org/MPL/
//
// Software distributed under the License is distributed on an "AS IS" basis,
// WITHOUT WARRANTY OF ANY KIND, either express or implied.
// See the License for the specific language governing rights and limitations under the License.
//
// The Original Code is: all this file.
//
// The Initial Developer of the Original Code is Michael H. Kay.
//
// Portions created by (your name) are Copyright (C) (your legal entity). All Rights Reserved.
//
// Contributor(s): none.
//