/*
* 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.xslt;
import org.w3c.dom.*;
import org.xml.sax.*;
import org.xml.sax.helpers.*;
import java.util.StringTokenizer;
import org.apache.xalan.xpath.xml.QName;
import org.apache.xalan.xpath.xml.NameSpace;
import org.apache.xalan.xpath.xml.StringToStringTable;
import org.apache.xalan.xpath.xml.XMLParserLiaisonDefault;
import org.apache.xalan.xpath.xml.MutableAttrListImpl;
import org.apache.xalan.xpath.xml.XSLMessages;
import org.apache.xalan.xpath.XPathSupport;
import org.apache.xalan.xslt.res.XSLTErrorResources;
import java.io.*;
import java.util.*;
/**
* <meta name="usage" content="advanced"/>
* Implement an extension element.
*/
public class ElemExtensionCall extends ElemLiteralResult
{
// ExtensionNSHandler nsh;
String m_extns;
String m_extHandlerLookup;
String localPart;
AttributeList m_attrs;
// public Vector m_avts = null;
transient boolean isAvailable = false;
String m_lang;
String m_srcURL;
String m_scriptSrc;
Class m_javaClass = null;
public int getXSLToken()
{
return Constants.ELEMNAME_EXTENSIONCALL;
}
ElemExtensionCall(XSLTEngineImpl processor,
Stylesheet stylesheetTree,
// ExtensionNSHandler nsh,
String extns,
String lang, String srcURL, String scriptSrc,
String name,
String localPart,
AttributeList atts,
int lineNumber, int columnNumber)
throws SAXException
{
super(processor, stylesheetTree, name, atts, lineNumber, columnNumber);
m_extHandlerLookup = new String("ElemExtensionCall:"+extns);
m_extns = extns;
m_lang = lang;
m_srcURL = srcURL;
m_scriptSrc = scriptSrc;
if (m_lang.equals ("javaclass") && (m_srcURL != null))
{
try
{
String cname = m_srcURL;
boolean isClass = false;
if (cname.startsWith ("class:"))
{
cname = cname.substring (6);
isClass = true;
}
// m_javaClass = Class.forName (cname);
}
catch (Exception e)
{
// System.out.println("Extension error: "+e.getMessage ());
throw new XSLProcessorException (e.getMessage (), e);
}
}
// Make a copy of the attributes, so we can give them to the
// extension in raw form. The alternative to doing this is to
// reconstruct the list in raw form.
m_attrs = new MutableAttrListImpl(atts);
// this.nsh = nsh;
// processor.getXMLProcessorLiaison().addExtensionNamespace(m_extHandlerLookup, nsh);
this.localPart = localPart;
m_attrs = new MutableAttrListImpl(atts);
}
/**
* Tell if this extension element is available for execution.
*/
public boolean elementIsAvailable()
{
return isAvailable;
}
public void execute(XSLTEngineImpl processor,
Node sourceTree,
Node sourceNode,
QName mode)
throws XSLProcessorException,
java.net.MalformedURLException,
java.io.FileNotFoundException,
java.io.IOException,
SAXException
{
try
{
processor.flushPending();
XMLParserLiaisonDefault liaison = ((XMLParserLiaisonDefault)processor.getXMLProcessorLiaison());
ExtensionNSHandler nsh
= (ExtensionNSHandler)liaison.m_extensionFunctionNamespaces.get(m_extns);
if(null == nsh)
{
nsh = new ExtensionNSHandler (processor, m_extns);
nsh.setScript (m_lang, m_srcURL, m_scriptSrc);
liaison.addExtensionElementNamespace(m_extns, nsh);
}
nsh.processElement (localPart, this,
processor,
m_stylesheet,
sourceTree, sourceNode, mode, m_javaClass, this);
}
catch(Exception e)
{
String msg = e.getMessage();
if(null != msg)
{
if(msg.startsWith("Stopping after fatal error:"))
{
msg = msg.substring("Stopping after fatal error:".length());
}
processor.message(XSLMessages.createMessage(XSLTErrorResources.ER_CALL_TO_EXT_FAILED, new Object[]{msg})); //"Call to extension element failed: "+msg);
// e.printStackTrace();
// System.exit(-1);
}
// processor.message(msg);
isAvailable = false;
for (ElemTemplateElement child = m_firstChild; child != null; child = child.m_nextSibling)
{
if(child.getXSLToken() == Constants.ELEMNAME_FALLBACK)
{
child.execute(processor, sourceTree, sourceNode, mode);
}
}
}
}
/**
* Return the raw value of the attribute.
*/
public String getAttribute(String name)
{
String value = m_attrs.getValue(name);
return value;
}
/**
* Return the value of the attribute interpreted as an Attribute
* Value Template (in other words, you can use curly expressions
* such as href="http://{website}".
*/
public String getAttribute(String name, Node sourceNode, XSLTEngineImpl processor)
throws SAXException
{
if(null != m_avts)
{
int nAttrs = m_avts.size();
for(int i = (nAttrs-1); i >= 0; i--)
{
AVT avt = (AVT)m_avts.elementAt(i);
if(avt.m_name.equals(name))
{
XPathSupport execContext = processor.getXMLProcessorLiaison();
return avt.evaluate(execContext, sourceNode, this,
new StringBuffer());
}
} // end for
}
return null;
}
}