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/*
* 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: ProcessorLRE.java 475981 2006-11-16 23:35:53Z minchau $
*/
package org.apache.xalan.processor;
import java.util.List;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import org.apache.xalan.res.XSLMessages;
import org.apache.xalan.res.XSLTErrorResources;
import org.apache.xalan.templates.Constants;
import org.apache.xalan.templates.ElemExtensionCall;
import org.apache.xalan.templates.ElemLiteralResult;
import org.apache.xalan.templates.ElemTemplate;
import org.apache.xalan.templates.ElemTemplateElement;
import org.apache.xalan.templates.Stylesheet;
import org.apache.xalan.templates.StylesheetRoot;
import org.apache.xalan.templates.XMLNSDecl;
import org.apache.xml.utils.SAXSourceLocator;
import org.apache.xpath.XPath;
import org.xml.sax.Attributes;
import org.xml.sax.Locator;
import org.xml.sax.helpers.AttributesImpl;
/**
* Processes an XSLT literal-result-element, or something that looks
* like one. The actual {@link org.apache.xalan.templates.ElemTemplateElement}
* produced may be a {@link org.apache.xalan.templates.ElemLiteralResult},
* a {@link org.apache.xalan.templates.StylesheetRoot}, or a
* {@link org.apache.xalan.templates.ElemExtensionCall}.
*
* @see literal-result-element in XSLT Specification
* @see org.apache.xalan.templates.ElemLiteralResult
* @xsl.usage internal
*/
public class ProcessorLRE extends ProcessorTemplateElem
{
static final long serialVersionUID = -1490218021772101404L;
/**
* Receive notification of the start of an element.
*
* @param handler non-null reference to current StylesheetHandler that is constructing the Templates.
* @param uri The Namespace URI, or an empty string.
* @param localName The local name (without prefix), or empty string if not namespace processing.
* @param rawName The qualified name (with prefix).
* @param attributes The specified or defaulted attributes.
*/
public void startElement(
StylesheetHandler handler, String uri, String localName, String rawName, Attributes attributes)
throws org.xml.sax.SAXException
{
try
{
ElemTemplateElement p = handler.getElemTemplateElement();
boolean excludeXSLDecl = false;
boolean isLREAsStyleSheet = false;
if (null == p)
{
// Literal Result Template as stylesheet.
XSLTElementProcessor lreProcessor = handler.popProcessor();
XSLTElementProcessor stylesheetProcessor =
handler.getProcessorFor(Constants.S_XSLNAMESPACEURL, "stylesheet",
"xsl:stylesheet");
handler.pushProcessor(lreProcessor);
Stylesheet stylesheet;
try
{
stylesheet = getStylesheetRoot(handler);
}
catch(TransformerConfigurationException tfe)
{
throw new TransformerException(tfe);
}
// stylesheet.setDOMBackPointer(handler.getOriginatingNode());
// ***** Note that we're assigning an empty locator. Is this necessary?
SAXSourceLocator slocator = new SAXSourceLocator();
Locator locator = handler.getLocator();
if(null != locator)
{
slocator.setLineNumber(locator.getLineNumber());
slocator.setColumnNumber(locator.getColumnNumber());
slocator.setPublicId(locator.getPublicId());
slocator.setSystemId(locator.getSystemId());
}
stylesheet.setLocaterInfo(slocator);
stylesheet.setPrefixes(handler.getNamespaceSupport());
handler.pushStylesheet(stylesheet);
isLREAsStyleSheet = true;
AttributesImpl stylesheetAttrs = new AttributesImpl();
AttributesImpl lreAttrs = new AttributesImpl();
int n = attributes.getLength();
for (int i = 0; i < n; i++)
{
String attrLocalName = attributes.getLocalName(i);
String attrUri = attributes.getURI(i);
String value = attributes.getValue(i);
if ((null != attrUri) && attrUri.equals(Constants.S_XSLNAMESPACEURL))
{
stylesheetAttrs.addAttribute(null, attrLocalName, attrLocalName,
attributes.getType(i),
attributes.getValue(i));
}
else if ((attrLocalName.startsWith("xmlns:") || attrLocalName.equals(
"xmlns")) && value.equals(Constants.S_XSLNAMESPACEURL))
{
// ignore
}
else
{
lreAttrs.addAttribute(attrUri, attrLocalName,
attributes.getQName(i),
attributes.getType(i),
attributes.getValue(i));
}
}
attributes = lreAttrs;
// Set properties from the attributes, but don't throw
// an error if there is an attribute defined that is not
// allowed on a stylesheet.
try{
stylesheetProcessor.setPropertiesFromAttributes(handler, "stylesheet",
stylesheetAttrs, stylesheet);
}
catch (Exception e)
{
// This is pretty ugly, but it will have to do for now.
// This is just trying to append some text specifying that
// this error came from a missing or invalid XSLT namespace
// declaration.
// If someone comes up with a better solution, please feel
// free to contribute it. -mm
if (stylesheet.getDeclaredPrefixes() == null ||
!declaredXSLNS(stylesheet))
{
throw new org.xml.sax.SAXException(XSLMessages.createWarning(XSLTErrorResources.WG_OLD_XSLT_NS, null));
}
else
{
throw new org.xml.sax.SAXException(e);
}
}
handler.pushElemTemplateElement(stylesheet);
ElemTemplate template = new ElemTemplate();
if (slocator != null)
template.setLocaterInfo(slocator);
appendAndPush(handler, template);
XPath rootMatch = new XPath("/", stylesheet, stylesheet, XPath.MATCH,
handler.getStylesheetProcessor().getErrorListener());
template.setMatch(rootMatch);
// template.setDOMBackPointer(handler.getOriginatingNode());
stylesheet.setTemplate(template);
p = handler.getElemTemplateElement();
excludeXSLDecl = true;
}
XSLTElementDef def = getElemDef();
Class classObject = def.getClassObject();
boolean isExtension = false;
boolean isComponentDecl = false;
boolean isUnknownTopLevel = false;
while (null != p)
{
// System.out.println("Checking: "+p);
if (p instanceof ElemLiteralResult)
{
ElemLiteralResult parentElem = (ElemLiteralResult) p;
isExtension = parentElem.containsExtensionElementURI(uri);
}
else if (p instanceof Stylesheet)
{
Stylesheet parentElem = (Stylesheet) p;
isExtension = parentElem.containsExtensionElementURI(uri);
if ((false == isExtension) && (null != uri)
&& (uri.equals(Constants.S_BUILTIN_EXTENSIONS_URL)
|| uri.equals(Constants.S_BUILTIN_OLD_EXTENSIONS_URL)))
{
isComponentDecl = true;
}
else
{
isUnknownTopLevel = true;
}
}
if (isExtension)
break;
p = p.getParentElem();
}
ElemTemplateElement elem = null;
try
{
if (isExtension)
{
// System.out.println("Creating extension(1): "+uri);
elem = new ElemExtensionCall();
}
else if (isComponentDecl)
{
elem = (ElemTemplateElement) classObject.newInstance();
}
else if (isUnknownTopLevel)
{
// TBD: Investigate, not sure about this. -sb
elem = (ElemTemplateElement) classObject.newInstance();
}
else
{
elem = (ElemTemplateElement) classObject.newInstance();
}
elem.setDOMBackPointer(handler.getOriginatingNode());
elem.setLocaterInfo(handler.getLocator());
elem.setPrefixes(handler.getNamespaceSupport(), excludeXSLDecl);
if (elem instanceof ElemLiteralResult)
{
((ElemLiteralResult) elem).setNamespace(uri);
((ElemLiteralResult) elem).setLocalName(localName);
((ElemLiteralResult) elem).setRawName(rawName);
((ElemLiteralResult) elem).setIsLiteralResultAsStylesheet(
isLREAsStyleSheet);
}
}
catch (InstantiationException ie)
{
handler.error(XSLTErrorResources.ER_FAILED_CREATING_ELEMLITRSLT, null, ie);//"Failed creating ElemLiteralResult instance!", ie);
}
catch (IllegalAccessException iae)
{
handler.error(XSLTErrorResources.ER_FAILED_CREATING_ELEMLITRSLT, null, iae);//"Failed creating ElemLiteralResult instance!", iae);
}
setPropertiesFromAttributes(handler, rawName, attributes, elem);
// bit of a hack here...
if (!isExtension && (elem instanceof ElemLiteralResult))
{
isExtension =
((ElemLiteralResult) elem).containsExtensionElementURI(uri);
if (isExtension)
{
// System.out.println("Creating extension(2): "+uri);
elem = new ElemExtensionCall();
elem.setLocaterInfo(handler.getLocator());
elem.setPrefixes(handler.getNamespaceSupport());
((ElemLiteralResult) elem).setNamespace(uri);
((ElemLiteralResult) elem).setLocalName(localName);
((ElemLiteralResult) elem).setRawName(rawName);
setPropertiesFromAttributes(handler, rawName, attributes, elem);
}
}
appendAndPush(handler, elem);
}
catch(TransformerException te)
{
throw new org.xml.sax.SAXException(te);
}
}
/**
* This method could be over-ridden by a class that extends this class.
* @param handler non-null reference to current StylesheetHandler that is constructing the Templates.
* @return an object that represents the stylesheet element.
*/
protected Stylesheet getStylesheetRoot(StylesheetHandler handler) throws TransformerConfigurationException
{
StylesheetRoot stylesheet;
stylesheet = new StylesheetRoot(handler.getSchema(), handler.getStylesheetProcessor().getErrorListener());
if (handler.getStylesheetProcessor().isSecureProcessing())
stylesheet.setSecureProcessing(true);
return stylesheet;
}
/**
* Receive notification of the end of an element.
*
* @param handler non-null reference to current StylesheetHandler that is constructing the Templates.
* @param uri The Namespace URI, or an empty string.
* @param localName The local name (without prefix), or empty string if not namespace processing.
* @param rawName The qualified name (with prefix).
*/
public void endElement(
StylesheetHandler handler, String uri, String localName, String rawName)
throws org.xml.sax.SAXException
{
ElemTemplateElement elem = handler.getElemTemplateElement();
if (elem instanceof ElemLiteralResult)
{
if (((ElemLiteralResult) elem).getIsLiteralResultAsStylesheet())
{
handler.popStylesheet();
}
}
super.endElement(handler, uri, localName, rawName);
}
private boolean declaredXSLNS(Stylesheet stylesheet)
{
List declaredPrefixes = stylesheet.getDeclaredPrefixes();
int n = declaredPrefixes.size();
for (int i = 0; i < n; i++)
{
XMLNSDecl decl = (XMLNSDecl) declaredPrefixes.get(i);
if(decl.getURI().equals(Constants.S_XSLNAMESPACEURL))
return true;
}
return false;
}
}
