toxmlsaxhandler.java

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  	                }
  	            }
            }
        }
        return pushed;
    }
        

    /**
     * @see org.xml.sax.ext.LexicalHandler#comment(char[], int, int)
     */
    public void comment(char[] arg0, int arg1, int arg2) throws SAXException
    {
        flushPending();
        if (m_lexHandler != null)
            m_lexHandler.comment(arg0, arg1, arg2);
            
        if (m_tracer != null)            
            super.fireCommentEvent(arg0, arg1, arg2);
    }

    /**
     * @see org.xml.sax.ext.LexicalHandler#endCDATA()
     */
    public void endCDATA() throws SAXException
    {
        /* Normally we would do somthing with this but we ignore it.
         * The neccessary call to m_lexHandler.endCDATA() will be made
         * in flushPending().
         * 
         * This is so that if we get calls like these:
         *   this.startCDATA();
         *   this.characters(chars1, off1, len1);
         *   this.endCDATA();
         *   this.startCDATA();
         *   this.characters(chars2, off2, len2);
         *   this.endCDATA();
         * 
         * that we will only make these calls to the wrapped handlers:
         * 
         *   m_lexHandler.startCDATA();
         *   m_saxHandler.characters(chars1, off1, len1);
         *   m_saxHandler.characters(chars1, off2, len2);
         *   m_lexHandler.endCDATA();
         * 
         * We will merge adjacent CDATA blocks.
         */ 
    }

    /**
     * @see org.xml.sax.ext.LexicalHandler#endDTD()
     */
    public void endDTD() throws SAXException
    {
        if (m_lexHandler != null)
            m_lexHandler.endDTD();
    }

    /**
     * @see org.xml.sax.ext.LexicalHandler#startEntity(String)
     */
    public void startEntity(String arg0) throws SAXException
    {
        if (m_lexHandler != null)
            m_lexHandler.startEntity(arg0);
    }

    /**
     * @see ExtendedContentHandler#characters(String)
     */
    public void characters(String chars) throws SAXException
    {
        final int length = chars.length();
        if (length > m_charsBuff.length)
        {
            m_charsBuff = new char[length*2 + 1];
        }
        chars.getChars(0, length, m_charsBuff, 0);
        this.characters(m_charsBuff, 0, length); 
    }

    /////////////////// from XSLTC //////////////
    public ToXMLSAXHandler(ContentHandler handler, String encoding)
    {
        super(handler, encoding);

        initCDATA();
        // initNamespaces();
        m_prefixMap = new NamespaceMappings();
    }

    public ToXMLSAXHandler(
        ContentHandler handler,
        LexicalHandler lex,
        String encoding)
    {
        super(handler, lex, encoding);

        initCDATA();
        //      initNamespaces();
        m_prefixMap = new NamespaceMappings();
    }

    /**
     * Start an element in the output document. This might be an XML element
     * (<elem>data</elem> type) or a CDATA section.
     */
    public void startElement(
    String elementNamespaceURI,
    String elementLocalName,
    String elementName) throws SAXException
    {
        startElement(
            elementNamespaceURI,elementLocalName,elementName, null);


    }
    public void startElement(String elementName) throws SAXException
    {
        startElement(null, null, elementName, null);
    }


    public void characters(char[] ch, int off, int len) throws SAXException
    {
        // We do the first two things in flushPending() but we don't
        // close any open CDATA calls.        
        if (m_needToCallStartDocument)
        {
            startDocumentInternal();
            m_needToCallStartDocument = false;
        }

        if (m_elemContext.m_startTagOpen)
        {
            closeStartTag();
            m_elemContext.m_startTagOpen = false;
        }

        if (m_elemContext.m_isCdataSection && !m_cdataTagOpen
        && m_lexHandler != null) 
        {
            m_lexHandler.startCDATA();
            // We have made a call to m_lexHandler.startCDATA() with
            // no balancing call to m_lexHandler.endCDATA()
            // so we set m_cdataTagOpen true to remember this.
            m_cdataTagOpen = true;
        }
        
        /* If there are any occurances of "]]>" in the character data
         * let m_saxHandler worry about it, we've already warned them with
         * the previous call of m_lexHandler.startCDATA();
         */ 
        m_saxHandler.characters(ch, off, len);

        // time to generate characters event
        if (m_tracer != null)
            fireCharEvent(ch, off, len);
    }
    

    /**
     * @see ExtendedContentHandler#endElement(String)
     */
    public void endElement(String elemName) throws SAXException
    {
        endElement(null, null, elemName);
    }    


    /**
     * Send a namespace declaration in the output document. The namespace
     * declaration will not be include if the namespace is already in scope
     * with the same prefix.
     */
    public void namespaceAfterStartElement(
        final String prefix,
        final String uri)
        throws SAXException
    {
        startPrefixMapping(prefix,uri,false);
    }

    /**
     *
     * @see org.xml.sax.ContentHandler#processingInstruction(String, String)
     * Send a processing instruction to the output document
     */
    public void processingInstruction(String target, String data)
        throws SAXException
    {
        flushPending();

        // Pass the processing instruction to the SAX handler
        m_saxHandler.processingInstruction(target, data);

        // we don't want to leave serializer to fire off this event,
        // so do it here.
        if (m_tracer != null)
            super.fireEscapingEvent(target, data);
    }

    /**
     * Undeclare the namespace that is currently pointed to by a given
     * prefix. Inform SAX handler if prefix was previously mapped.
     */
    protected boolean popNamespace(String prefix)
    {
        try
        {
            if (m_prefixMap.popNamespace(prefix))
            {
                m_saxHandler.endPrefixMapping(prefix);
                return true;
            }
        }
        catch (SAXException e)
        {
            // falls through
        }
        return false;
    }

    public void startCDATA() throws SAXException
    {
        /* m_cdataTagOpen can only be true here if we have ignored the
         * previous call to this.endCDATA() and the previous call 
         * this.startCDATA() before that is still "open". In this way
         * we merge adjacent CDATA. If anything else happened after the 
         * ignored call to this.endCDATA() and this call then a call to 
         * flushPending() would have been made which would have
         * closed the CDATA and set m_cdataTagOpen to false.
         */
        if (!m_cdataTagOpen ) 
        {
            flushPending();
            if (m_lexHandler != null) {
                m_lexHandler.startCDATA();

                // We have made a call to m_lexHandler.startCDATA() with
                // no balancing call to m_lexHandler.endCDATA()
                // so we set m_cdataTagOpen true to remember this.                
                m_cdataTagOpen = true;     
            }              
        }        
    }

    /**
     * @see org.xml.sax.ContentHandler#startElement(String, String, String, Attributes)
     */
    public void startElement(
    String namespaceURI,
    String localName,
    String name,
    Attributes atts)
        throws SAXException
    {
        flushPending();
        super.startElement(namespaceURI, localName, name, atts);

        // Handle document type declaration (for first element only)
         if (m_needToOutputDocTypeDecl)
         {
             String doctypeSystem = getDoctypeSystem();
             if (doctypeSystem != null && m_lexHandler != null)
             {
                 String doctypePublic = getDoctypePublic();
                 if (doctypeSystem != null)
                     m_lexHandler.startDTD(
                         name,
                         doctypePublic,
                         doctypeSystem);
             }
             m_needToOutputDocTypeDecl = false;
         }
        m_elemContext = m_elemContext.push(namespaceURI, localName, name);

        // ensurePrefixIsDeclared depends on the current depth, so
        // the previous increment is necessary where it is.
        if (namespaceURI != null)
            ensurePrefixIsDeclared(namespaceURI, name);

        // add the attributes to the collected ones
        if (atts != null)
            addAttributes(atts);

         
        // do we really need this CDATA section state?
        m_elemContext.m_isCdataSection = isCdataSection();
   
    }
 
    private void ensurePrefixIsDeclared(String ns, String rawName)
        throws org.xml.sax.SAXException
    {

        if (ns != null && ns.length() > 0)
        {
            int index;
            final boolean no_prefix = ((index = rawName.indexOf(":")) < 0);
            String prefix = (no_prefix) ? "" : rawName.substring(0, index);


            if (null != prefix)
            {
                String foundURI = m_prefixMap.lookupNamespace(prefix);

                if ((null == foundURI) || !foundURI.equals(ns))
                {
                    this.startPrefixMapping(prefix, ns, false);

                    if (getShouldOutputNSAttr()) {
                        // Bugzilla1133: Generate attribute as well as namespace event.
                        // SAX does expect both.
                        this.addAttributeAlways(
                            "http://www.w3.org/2000/xmlns/",
                            no_prefix ? "xmlns" : prefix,  // local name
                            no_prefix ? "xmlns" : ("xmlns:"+ prefix), // qname
                            "CDATA",
                            ns,
                            false);
                    }
                }

            }
        }
    }
    /**
     * Adds the given attribute to the set of attributes, and also makes sure
     * that the needed prefix/uri mapping is declared, but only if there is a
     * currently open element.
     * 
     * @param uri the URI of the attribute
     * @param localName the local name of the attribute
     * @param rawName    the qualified name of the attribute
     * @param type the type of the attribute (probably CDATA)
     * @param value the value of the attribute
     * @param XSLAttribute true if this attribute is coming from an xsl:attribute element
     * @see ExtendedContentHandler#addAttribute(String, String, String, String, String)
     */
    public void addAttribute(
        String uri,
        String localName,
        String rawName,
        String type,
        String value,
        boolean XSLAttribute)
        throws SAXException
    {      
        if (m_elemContext.m_startTagOpen)
        {
            ensurePrefixIsDeclared(uri, rawName);
            addAttributeAlways(uri, localName, rawName, type, value, false);
        }

    } 
       
    /**
     * Try's to reset the super class and reset this class for 
     * re-use, so that you don't need to create a new serializer 
     * (mostly for performance reasons).
     * 
     * @return true if the class was successfuly reset.
     * @see Serializer#reset()
     */
    public boolean reset()
    {
        boolean wasReset = false;
        if (super.reset())
        {
            resetToXMLSAXHandler();
            wasReset = true;
        }
        return wasReset;
    }
    
    /**
     * Reset all of the fields owned by ToXMLSAXHandler class
     *
     */
    private void resetToXMLSAXHandler()
    {
        this.m_escapeSetting = false;
    }  

}