android-platform-libcore/luni/src/main/java/org/apache/xalan/processor/ProcessorInclude.java - nest-cam/4320010/android-platform-libcore - Git at Google

 /*
  * 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: ProcessorInclude.java 469349 2006-10-31 03:06:50Z minchau $
  */
 package org.apache.xalan.processor;

 import java.io.IOException;

 import javax.xml.XMLConstants;
 import javax.xml.transform.Source;
 import javax.xml.transform.TransformerException;
 import javax.xml.transform.URIResolver;
 import javax.xml.transform.dom.DOMSource;
 import javax.xml.transform.sax.SAXSource;
 import javax.xml.transform.stream.StreamSource;

 import org.apache.xalan.res.XSLMessages;
 import org.apache.xalan.res.XSLTErrorResources;
 import org.apache.xml.utils.SystemIDResolver;
 import org.apache.xml.utils.TreeWalker;

 import org.w3c.dom.Node;

 import org.xml.sax.Attributes;
 import org.xml.sax.InputSource;
 import org.xml.sax.XMLReader;
 import org.xml.sax.helpers.XMLReaderFactory;

 /**
  * TransformerFactory class for xsl:include markup.
  * @see <a href="http://www.w3.org/TR/xslt#dtd">XSLT DTD</a>
  * @see <a href="http://www.w3.org/TR/xslt#include">include in XSLT Specification</a>
  *
  * @xsl.usage internal
  */
 public class ProcessorInclude extends XSLTElementProcessor
 {
     static final long serialVersionUID = -4570078731972673481L;

   /**
    * The base URL of the XSL document.
    * @serial
    */
   private String m_href = null;

   /**
    * Get the base identifier with which this stylesheet is associated.
    *
    * @return non-null reference to the href attribute string, or
    *         null if setHref has not been called.
    */
   public String getHref()
   {
     return m_href;
   }

   /**
    * Get the base identifier with which this stylesheet is associated.
    *
    * @param baseIdent Should be a non-null reference to a valid URL string.
    */
   public void setHref(String baseIdent)
   {
     // Validate?
     m_href = baseIdent;
   }

   /**
    * Get the stylesheet type associated with an included stylesheet
    *
    * @return the type of the stylesheet
    */
   protected int getStylesheetType()
   {
     return StylesheetHandler.STYPE_INCLUDE;
   }

   /**
    * Get the error number associated with this type of stylesheet including itself
    *
    * @return the appropriate error number
    */
   protected String getStylesheetInclErr()
   {
     return XSLTErrorResources.ER_STYLESHEET_INCLUDES_ITSELF;
   }

   /**
    * Receive notification of the start of an xsl:include element.
    *
    * @param handler The calling StylesheetHandler/TemplatesBuilder.
    * @param uri The Namespace URI, or the empty string if the
    *        element has no Namespace URI or if Namespace
    *        processing is not being performed.
    * @param localName The local name (without prefix), or the
    *        empty string if Namespace processing is not being
    *        performed.
    * @param rawName The raw XML 1.0 name (with prefix), or the
    *        empty string if raw names are not available.
    * @param attributes The attributes attached to the element.  If
    *        there are no attributes, it shall be an empty
    *        Attributes object.
    *
    * @throws org.xml.sax.SAXException Any SAX exception, possibly
    *            wrapping another exception.
    */
   public void startElement(
           StylesheetHandler handler, String uri, String localName, String rawName, Attributes attributes)
             throws org.xml.sax.SAXException
   {


     setPropertiesFromAttributes(handler, rawName, attributes, this);

     try
     {

       // Get the Source from the user's URIResolver (if any).
       Source sourceFromURIResolver = getSourceFromUriResolver(handler);
       // Get the system ID of the included/imported stylesheet module
       String hrefUrl = getBaseURIOfIncludedStylesheet(handler, sourceFromURIResolver);

       if (handler.importStackContains(hrefUrl))
       {
         throw new org.xml.sax.SAXException(
           XSLMessages.createMessage(
           getStylesheetInclErr(), new Object[]{ hrefUrl }));  //"(StylesheetHandler) "+hrefUrl+" is directly or indirectly importing itself!");
       }

       // Push the system ID and corresponding Source
       // on some stacks for later retrieval during parse() time.
       handler.pushImportURL(hrefUrl);
       handler.pushImportSource(sourceFromURIResolver);

       int savedStylesheetType = handler.getStylesheetType();

       handler.setStylesheetType(this.getStylesheetType());
       handler.pushNewNamespaceSupport();

       try
       {
         parse(handler, uri, localName, rawName, attributes);
       }
       finally
       {
         handler.setStylesheetType(savedStylesheetType);
         handler.popImportURL();
         handler.popImportSource();
         handler.popNamespaceSupport();
       }
     }
     catch(TransformerException te)
     {
       handler.error(te.getMessage(), te);
     }
   }

   /**
    * Set off a new parse for an included or imported stylesheet.  This will
    * set the {@link StylesheetHandler} to a new state, and recurse in with
    * a new set of parse events.  Once this function returns, the state of
    * the StylesheetHandler should be restored.
    *
    * @param handler non-null reference to current StylesheetHandler that is constructing the Templates.
    * @param uri The Namespace URI, which should be the XSLT namespace.
    * @param localName The local name (without prefix), which should be "include" or "import".
    * @param rawName The qualified name (with prefix).
    * @param attributes The list of attributes on the xsl:include or xsl:import element.
    *
    * @throws org.xml.sax.SAXException Any SAX exception, possibly
    *            wrapping another exception.
    */
   protected void parse(
           StylesheetHandler handler, String uri, String localName, String rawName, Attributes attributes)
             throws org.xml.sax.SAXException
   {
     TransformerFactoryImpl processor = handler.getStylesheetProcessor();
     URIResolver uriresolver = processor.getURIResolver();

     try
     {
       Source source = null;

       // The base identifier, an aboslute URI
       // that is associated with the included/imported
       // stylesheet module is known in this method,
       // so this method does the pushing of the
       // base ID onto the stack.

       if (null != uriresolver)
       {
         // There is a user provided URI resolver.
         // At the startElement() call we would
         // have tried to obtain a Source from it
         // which we now retrieve
         source = handler.peekSourceFromURIResolver();

         if (null != source && source instanceof DOMSource)
         {
           Node node = ((DOMSource)source).getNode();

           // There is a user provided URI resolver.
           // At the startElement() call we would
           // have already pushed the system ID, obtained
           // from either the source.getSystemId(), if non-null
           // or from SystemIDResolver.getAbsoluteURI() as a backup
           // which we now retrieve.
           String systemId = handler.peekImportURL();

           // Push the absolute URI of the included/imported
           // stylesheet module onto the stack.
           if (systemId != null)
               handler.pushBaseIndentifier(systemId);

           TreeWalker walker = new TreeWalker(handler, new org.apache.xml.utils.DOM2Helper(), systemId);

           try
           {
             walker.traverse(node);
           }
           catch(org.xml.sax.SAXException se)
           {
             throw new TransformerException(se);
           }
           if (systemId != null)
             handler.popBaseIndentifier();
           return;
         }
       }

       if(null == source)
       {
         String absURL = SystemIDResolver.getAbsoluteURI(getHref(),
                           handler.getBaseIdentifier());

         source = new StreamSource(absURL);
       }

       // possible callback to a class that over-rides this method.
       source = processSource(handler, source);

       XMLReader reader = null;

       if(source instanceof SAXSource)
       {
         SAXSource saxSource = (SAXSource)source;
         reader = saxSource.getXMLReader(); // may be null
       }

       InputSource inputSource = SAXSource.sourceToInputSource(source);

       if (null == reader)
       {
         // Use JAXP1.1 ( if possible )
         try {
           javax.xml.parsers.SAXParserFactory factory=
                                                      javax.xml.parsers.SAXParserFactory.newInstance();
           factory.setNamespaceAware( true );

           if (handler.getStylesheetProcessor().isSecureProcessing())
           {
             try
             {
               factory.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true);
             }
             catch (org.xml.sax.SAXException se) {}
           }

           javax.xml.parsers.SAXParser jaxpParser=
                                                  factory.newSAXParser();
           reader=jaxpParser.getXMLReader();

         } catch( javax.xml.parsers.ParserConfigurationException ex ) {
           throw new org.xml.sax.SAXException( ex );
         } catch( javax.xml.parsers.FactoryConfigurationError ex1 ) {
             throw new org.xml.sax.SAXException( ex1.toString() );
         }
         catch( NoSuchMethodError ex2 )
         {
         }
         catch (AbstractMethodError ame){}
       }
       if (null == reader)
         reader = XMLReaderFactory.createXMLReader();

       if (null != reader)
       {
         reader.setContentHandler(handler);

         // Push the absolute URI of the included/imported
         // stylesheet module onto the stack.
         handler.pushBaseIndentifier(inputSource.getSystemId());

         try
         {
           reader.parse(inputSource);
         }
         finally
         {
           handler.popBaseIndentifier();
         }
       }
     }
     catch (IOException ioe)
     {
       handler.error(XSLTErrorResources.ER_IOEXCEPTION,
                     new Object[]{ getHref() }, ioe);
     }
     catch(TransformerException te)
     {
       handler.error(te.getMessage(), te);
     }
   }

   /**
    * This method does nothing, but a class that extends this class could
    * over-ride it and do some processing of the source.
    * @param handler The calling StylesheetHandler/TemplatesBuilder.
    * @param source The source of the included stylesheet.
    * @return the same or an equivalent source to what was passed in.
    */
   protected Source processSource(StylesheetHandler handler, Source source)
   {
       return source;
   }

   /**
    * Get the Source object for the included or imported stylesheet module
    * obtained from the user's URIResolver, if there is no user provided
    * URIResolver null is returned.
    */
   private Source getSourceFromUriResolver(StylesheetHandler handler)
             throws TransformerException {
         Source s = null;
             TransformerFactoryImpl processor = handler.getStylesheetProcessor();
             URIResolver uriresolver = processor.getURIResolver();
             if (uriresolver != null) {
                 String href = getHref();
                 String base = handler.getBaseIdentifier();
                 s = uriresolver.resolve(href,base);
             }

         return s;
     }

     /**
      * Get the base URI of the included or imported stylesheet,
      * if the user provided a URIResolver, then get the Source
      * object for the stylsheet from it, and get the systemId
      * from that Source object, otherwise try to recover by
      * using the SysteIDResolver to figure out the base URI.
      * @param handler The handler that processes the stylesheet as SAX events,
      * and maintains state
      * @param s The Source object from a URIResolver, for the included stylesheet module,
      * so this will be null if there is no URIResolver set.
      */
     private String getBaseURIOfIncludedStylesheet(StylesheetHandler handler, Source s)
             throws TransformerException {


         String baseURI;
         String idFromUriResolverSource;
         if (s != null && (idFromUriResolverSource = s.getSystemId()) != null) {
             // We have a Source obtained from a users's URIResolver,
             // and the system ID is set on it, so return that as the base URI
             baseURI = idFromUriResolverSource;
         } else {
             // The user did not provide a URIResolver, or it did not
             // return a Source for the included stylesheet module, or
             // the Source has no system ID set, so we fall back to using
             // the system ID Resolver to take the href and base
             // to generate the baseURI of the included stylesheet.
             baseURI = SystemIDResolver.getAbsoluteURI(getHref(), handler
                     .getBaseIdentifier());
         }

         return baseURI;
     }
 }
	/*
	* 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: ProcessorInclude.java 469349 2006-10-31 03:06:50Z minchau $
	*/
	package org.apache.xalan.processor;

	import java.io.IOException;

	import javax.xml.XMLConstants;
	import javax.xml.transform.Source;
	import javax.xml.transform.TransformerException;
	import javax.xml.transform.URIResolver;
	import javax.xml.transform.dom.DOMSource;
	import javax.xml.transform.sax.SAXSource;
	import javax.xml.transform.stream.StreamSource;

	import org.apache.xalan.res.XSLMessages;
	import org.apache.xalan.res.XSLTErrorResources;
	import org.apache.xml.utils.SystemIDResolver;
	import org.apache.xml.utils.TreeWalker;

	import org.w3c.dom.Node;

	import org.xml.sax.Attributes;
	import org.xml.sax.InputSource;
	import org.xml.sax.XMLReader;
	import org.xml.sax.helpers.XMLReaderFactory;

	/**
	* TransformerFactory class for xsl:include markup.
	* @see <a href="http://www.w3.org/TR/xslt#dtd">XSLT DTD</a>
	* @see <a href="http://www.w3.org/TR/xslt#include">include in XSLT Specification</a>
	*
	* @xsl.usage internal
	*/
	public class ProcessorInclude extends XSLTElementProcessor
	{
	static final long serialVersionUID = -4570078731972673481L;

	/**
	* The base URL of the XSL document.
	* @serial
	*/
	private String m_href = null;

	/**
	* Get the base identifier with which this stylesheet is associated.
	*
	* @return non-null reference to the href attribute string, or
	* null if setHref has not been called.
	*/
	public String getHref()
	{
	return m_href;
	}

	/**
	* Get the base identifier with which this stylesheet is associated.
	*
	* @param baseIdent Should be a non-null reference to a valid URL string.
	*/
	public void setHref(String baseIdent)
	{
	// Validate?
	m_href = baseIdent;
	}

	/**
	* Get the stylesheet type associated with an included stylesheet
	*
	* @return the type of the stylesheet
	*/
	protected int getStylesheetType()
	{
	return StylesheetHandler.STYPE_INCLUDE;
	}

	/**
	* Get the error number associated with this type of stylesheet including itself
	*
	* @return the appropriate error number
	*/
	protected String getStylesheetInclErr()
	{
	return XSLTErrorResources.ER_STYLESHEET_INCLUDES_ITSELF;
	}

	/**
	* Receive notification of the start of an xsl:include element.
	*
	* @param handler The calling StylesheetHandler/TemplatesBuilder.
	* @param uri The Namespace URI, or the empty string if the
	* element has no Namespace URI or if Namespace
	* processing is not being performed.
	* @param localName The local name (without prefix), or the
	* empty string if Namespace processing is not being
	* performed.
	* @param rawName The raw XML 1.0 name (with prefix), or the
	* empty string if raw names are not available.
	* @param attributes The attributes attached to the element. If
	* there are no attributes, it shall be an empty
	* Attributes object.
	*
	* @throws org.xml.sax.SAXException Any SAX exception, possibly
	* wrapping another exception.
	*/
	public void startElement(
	StylesheetHandler handler, String uri, String localName, String rawName, Attributes attributes)
	throws org.xml.sax.SAXException
	{


	setPropertiesFromAttributes(handler, rawName, attributes, this);

	try
	{

	// Get the Source from the user's URIResolver (if any).
	Source sourceFromURIResolver = getSourceFromUriResolver(handler);
	// Get the system ID of the included/imported stylesheet module
	String hrefUrl = getBaseURIOfIncludedStylesheet(handler, sourceFromURIResolver);

	if (handler.importStackContains(hrefUrl))
	{
	throw new org.xml.sax.SAXException(
	XSLMessages.createMessage(
	getStylesheetInclErr(), new Object[]{ hrefUrl })); //"(StylesheetHandler) "+hrefUrl+" is directly or indirectly importing itself!");
	}

	// Push the system ID and corresponding Source
	// on some stacks for later retrieval during parse() time.
	handler.pushImportURL(hrefUrl);
	handler.pushImportSource(sourceFromURIResolver);

	int savedStylesheetType = handler.getStylesheetType();

	handler.setStylesheetType(this.getStylesheetType());
	handler.pushNewNamespaceSupport();

	try
	{
	parse(handler, uri, localName, rawName, attributes);
	}
	finally
	{
	handler.setStylesheetType(savedStylesheetType);
	handler.popImportURL();
	handler.popImportSource();
	handler.popNamespaceSupport();
	}
	}
	catch(TransformerException te)
	{
	handler.error(te.getMessage(), te);
	}
	}

	/**
	* Set off a new parse for an included or imported stylesheet. This will
	* set the {@link StylesheetHandler} to a new state, and recurse in with
	* a new set of parse events. Once this function returns, the state of
	* the StylesheetHandler should be restored.
	*
	* @param handler non-null reference to current StylesheetHandler that is constructing the Templates.
	* @param uri The Namespace URI, which should be the XSLT namespace.
	* @param localName The local name (without prefix), which should be "include" or "import".
	* @param rawName The qualified name (with prefix).
	* @param attributes The list of attributes on the xsl:include or xsl:import element.
	*
	* @throws org.xml.sax.SAXException Any SAX exception, possibly
	* wrapping another exception.
	*/
	protected void parse(
	StylesheetHandler handler, String uri, String localName, String rawName, Attributes attributes)
	throws org.xml.sax.SAXException
	{
	TransformerFactoryImpl processor = handler.getStylesheetProcessor();
	URIResolver uriresolver = processor.getURIResolver();

	try
	{
	Source source = null;

	// The base identifier, an aboslute URI
	// that is associated with the included/imported
	// stylesheet module is known in this method,
	// so this method does the pushing of the
	// base ID onto the stack.

	if (null != uriresolver)
	{
	// There is a user provided URI resolver.
	// At the startElement() call we would
	// have tried to obtain a Source from it
	// which we now retrieve
	source = handler.peekSourceFromURIResolver();

	if (null != source && source instanceof DOMSource)
	{
	Node node = ((DOMSource)source).getNode();

	// There is a user provided URI resolver.
	// At the startElement() call we would
	// have already pushed the system ID, obtained
	// from either the source.getSystemId(), if non-null
	// or from SystemIDResolver.getAbsoluteURI() as a backup
	// which we now retrieve.
	String systemId = handler.peekImportURL();

	// Push the absolute URI of the included/imported
	// stylesheet module onto the stack.
	if (systemId != null)
	handler.pushBaseIndentifier(systemId);

	TreeWalker walker = new TreeWalker(handler, new org.apache.xml.utils.DOM2Helper(), systemId);

	try
	{
	walker.traverse(node);
	}
	catch(org.xml.sax.SAXException se)
	{
	throw new TransformerException(se);
	}
	if (systemId != null)
	handler.popBaseIndentifier();
	return;
	}
	}

	if(null == source)
	{
	String absURL = SystemIDResolver.getAbsoluteURI(getHref(),
	handler.getBaseIdentifier());

	source = new StreamSource(absURL);
	}

	// possible callback to a class that over-rides this method.
	source = processSource(handler, source);

	XMLReader reader = null;

	if(source instanceof SAXSource)
	{
	SAXSource saxSource = (SAXSource)source;
	reader = saxSource.getXMLReader(); // may be null
	}

	InputSource inputSource = SAXSource.sourceToInputSource(source);

	if (null == reader)
	{
	// Use JAXP1.1 ( if possible )
	try {
	javax.xml.parsers.SAXParserFactory factory=
	javax.xml.parsers.SAXParserFactory.newInstance();
	factory.setNamespaceAware( true );

	if (handler.getStylesheetProcessor().isSecureProcessing())
	{
	try
	{
	factory.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true);
	}
	catch (org.xml.sax.SAXException se) {}
	}

	javax.xml.parsers.SAXParser jaxpParser=
	factory.newSAXParser();
	reader=jaxpParser.getXMLReader();

	} catch( javax.xml.parsers.ParserConfigurationException ex ) {
	throw new org.xml.sax.SAXException( ex );
	} catch( javax.xml.parsers.FactoryConfigurationError ex1 ) {
	throw new org.xml.sax.SAXException( ex1.toString() );
	}
	catch( NoSuchMethodError ex2 )
	{
	}
	catch (AbstractMethodError ame){}
	}
	if (null == reader)
	reader = XMLReaderFactory.createXMLReader();

	if (null != reader)
	{
	reader.setContentHandler(handler);

	// Push the absolute URI of the included/imported
	// stylesheet module onto the stack.
	handler.pushBaseIndentifier(inputSource.getSystemId());

	try
	{
	reader.parse(inputSource);
	}
	finally
	{
	handler.popBaseIndentifier();
	}
	}
	}
	catch (IOException ioe)
	{
	handler.error(XSLTErrorResources.ER_IOEXCEPTION,
	new Object[]{ getHref() }, ioe);
	}
	catch(TransformerException te)
	{
	handler.error(te.getMessage(), te);
	}
	}

	/**
	* This method does nothing, but a class that extends this class could
	* over-ride it and do some processing of the source.
	* @param handler The calling StylesheetHandler/TemplatesBuilder.
	* @param source The source of the included stylesheet.
	* @return the same or an equivalent source to what was passed in.
	*/
	protected Source processSource(StylesheetHandler handler, Source source)
	{
	return source;
	}

	/**
	* Get the Source object for the included or imported stylesheet module
	* obtained from the user's URIResolver, if there is no user provided
	* URIResolver null is returned.
	*/
	private Source getSourceFromUriResolver(StylesheetHandler handler)
	throws TransformerException {
	Source s = null;
	TransformerFactoryImpl processor = handler.getStylesheetProcessor();
	URIResolver uriresolver = processor.getURIResolver();
	if (uriresolver != null) {
	String href = getHref();
	String base = handler.getBaseIdentifier();
	s = uriresolver.resolve(href,base);
	}

	return s;
	}

	/**
	* Get the base URI of the included or imported stylesheet,
	* if the user provided a URIResolver, then get the Source
	* object for the stylsheet from it, and get the systemId
	* from that Source object, otherwise try to recover by
	* using the SysteIDResolver to figure out the base URI.
	* @param handler The handler that processes the stylesheet as SAX events,
	* and maintains state
	* @param s The Source object from a URIResolver, for the included stylesheet module,
	* so this will be null if there is no URIResolver set.
	*/
	private String getBaseURIOfIncludedStylesheet(StylesheetHandler handler, Source s)
	throws TransformerException {



	String baseURI;
	String idFromUriResolverSource;
	if (s != null && (idFromUriResolverSource = s.getSystemId()) != null) {
	// We have a Source obtained from a users's URIResolver,
	// and the system ID is set on it, so return that as the base URI
	baseURI = idFromUriResolverSource;
	} else {
	// The user did not provide a URIResolver, or it did not
	// return a Source for the included stylesheet module, or
	// the Source has no system ID set, so we fall back to using
	// the system ID Resolver to take the href and base
	// to generate the baseURI of the included stylesheet.
	baseURI = SystemIDResolver.getAbsoluteURI(getHref(), handler
	.getBaseIdentifier());
	}

	return baseURI;
	}
	}