/*
* The Apache Software License, Version 1.1
*
*
* Copyright (c) 1999 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, 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 "Xalan" 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 (INCLUDING, 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 based on software copyright (c) 1999, Lotus
* Development Corporation., http://www.lotus.com. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package org.apache.xalan.transformer;
import org.apache.xalan.templates.Stylesheet;
import org.w3c.dom.Node;
import org.w3c.dom.Text;
import org.w3c.dom.Attr;
import org.w3c.dom.Comment;
import org.w3c.dom.CDATASection;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.EntityReference;
import javax.xml.transform.TransformerException;
import org.xml.sax.Attributes;
import org.apache.xpath.XPathContext;
import org.apache.xpath.DOMHelper;
import org.apache.xalan.res.XSLTErrorResources;
/**
* <meta name="usage" content="internal"/>
* Class used to clone a node, possibly including its children to
* a result tree.
*/
public class ClonerToResultTree
{
/** Result tree handler for the cloned tree */
private ResultTreeHandler m_rth;
/** Transformer instance to use for cloning */
private TransformerImpl m_transformer;
/**
* Constructor ClonerToResultTree
*
*
* @param transformer non-null transformer instance to use for the cloning
* @param rth non-null result tree handler for the cloned tree
*/
public ClonerToResultTree(TransformerImpl transformer,
ResultTreeHandler rth)
{
m_rth = rth;
m_transformer = transformer;
}
/**
* Clone an element with or without children.
* TODO: Fix or figure out node clone failure!
* the error condition is severe enough to halt processing.
*
* @param node The node to clone
* @param shouldCloneAttributes Flag indicating whether to
* clone children attributes
*
* @throws TransformerException
*/
public void cloneToResultTree(Node node, boolean shouldCloneAttributes)
throws TransformerException
{
try
{
boolean stripWhiteSpace = false;
XPathContext xctxt = m_transformer.getXPathContext();
DOMHelper dhelper = xctxt.getDOMHelper();
switch (node.getNodeType())
{
case Node.TEXT_NODE :
{
Text tx = (Text) node;
String data = null;
// System.out.println("stripWhiteSpace = "+stripWhiteSpace+", "+tx.getData());
if (stripWhiteSpace)
{
if (!dhelper.isIgnorableWhitespace(tx))
{
data = tx.getData();
if ((null != data) && (0 == data.trim().length()))
{
data = null;
}
}
}
else
{
Node parent = node.getParentNode();
if (null != parent)
{
if (Node.DOCUMENT_NODE != parent.getNodeType())
{
data = tx.getData();
if ((null != data) && (0 == data.length()))
{
data = null;
}
}
}
else
{
data = tx.getData();
if ((null != data) && (0 == data.length()))
{
data = null;
}
}
}
if (null != data)
{
// TODO: Hack around the issue of comments next to literals.
// This would be, when a comment is present, the whitespace
// after the comment must be added to the literal. The
// parser should do this, but XML4J doesn't seem to.
// <foo>some lit text
// <!-- comment -->
// </foo>
// Loop through next siblings while they are comments, then,
// if the node after that is a ignorable text node, append
// it to the text node just added.
if (dhelper.isIgnorableWhitespace(tx))
{
m_rth.ignorableWhitespace(data.toCharArray(), 0, data.length());
}
else
{
m_rth.characters(data.toCharArray(), 0, data.length());
}
}
}
break;
case Node.DOCUMENT_FRAGMENT_NODE :
case Node.DOCUMENT_NODE :
// Can't clone a document, but refrain from throwing an error
// so that copy-of will work
break;
case Node.ELEMENT_NODE :
{
Attributes atts;
if (shouldCloneAttributes)
{
m_rth.addAttributes(node);
m_rth.processNSDecls(node);
}
String ns = dhelper.getNamespaceOfNode(node);
String localName = dhelper.getLocalNameOfNode(node);
m_rth.startElement(ns, localName, node.getNodeName());
}
break;
case Node.CDATA_SECTION_NODE :
{
m_rth.startCDATA();
String data = ((CDATASection) node).getData();
m_rth.characters(data.toCharArray(), 0, data.length());
m_rth.endCDATA();
}
break;
case Node.ATTRIBUTE_NODE :
{
if (m_rth.isDefinedNSDecl((Attr) node))
break;
String ns = dhelper.getNamespaceOfNode(node);
String localName = dhelper.getLocalNameOfNode(node);
m_rth.addAttribute(ns, localName, node.getNodeName(), "CDATA",
((Attr) node).getValue());
}
break;
case Node.COMMENT_NODE :
{
m_rth.comment(((Comment) node).getData());
}
break;
case Node.ENTITY_REFERENCE_NODE :
{
EntityReference er = (EntityReference) node;
m_rth.entityReference(er.getNodeName());
}
break;
case Node.PROCESSING_INSTRUCTION_NODE :
{
ProcessingInstruction pi = (ProcessingInstruction) node;
m_rth.processingInstruction(pi.getTarget(), pi.getData());
}
break;
default :
m_transformer.getMsgMgr().error(null, XSLTErrorResources.ER_CANT_CREATE_ITEM,
new Object[]{ node.getNodeName() }); //"Can not create item in result tree: "+node.getNodeName());
}
}
catch(org.xml.sax.SAXException se)
{
throw new TransformerException(se);
}
} // end cloneToResultTree function
}