/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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: FuncNormalizeSpace.java 468655 2006-10-28 07:12:06Z minchau $
*/
package org.apache.xpath.functions;
import org.apache.xml.dtm.DTM;
import org.apache.xml.utils.XMLString;
import org.apache.xpath.XPathContext;
import org.apache.xpath.objects.XObject;
import org.apache.xpath.objects.XString;
import org.xml.sax.ContentHandler;
/**
* Execute the normalize-space() function.
* @xsl.usage advanced
*/
public class FuncNormalizeSpace extends FunctionDef1Arg
{
static final long serialVersionUID = -3377956872032190880L;
/**
* Execute the function. The function must return
* a valid object.
* @param xctxt The current execution context.
* @return A valid XObject.
*
* @throws javax.xml.transform.TransformerException
*/
public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
{
XMLString s1 = getArg0AsString(xctxt);
return (XString)s1.fixWhiteSpace(true, true, false);
}
/**
* Execute an expression in the XPath runtime context, and return the
* result of the expression.
*
*
* @param xctxt The XPath runtime context.
*
* @return The result of the expression in the form of a <code>XObject</code>.
*
* @throws javax.xml.transform.TransformerException if a runtime exception
* occurs.
*/
public void executeCharsToContentHandler(XPathContext xctxt,
ContentHandler handler)
throws javax.xml.transform.TransformerException,
org.xml.sax.SAXException
{
if(Arg0IsNodesetExpr())
{
int node = getArg0AsNode(xctxt);
if(DTM.NULL != node)
{
DTM dtm = xctxt.getDTM(node);
dtm.dispatchCharactersEvents(node, handler, true);
}
}
else
{
XObject obj = execute(xctxt);
obj.dispatchCharactersEvents(handler);
}
}
}