code: /*
   * 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.
   */
  /*
   * $Id$
   */
  package org.apache.xalan.templates;
  
  import javax.xml.transform.TransformerException;
  
  import org.apache.xalan.transformer.TransformerImpl;
  import org.apache.xml.serializer.SerializationHandler;
  import org.xml.sax.SAXException;
  
  /**
   * Implement a text literal.
   * @see <a href="http://www.w3.org/TR/xslt#section-Creating-Text">section-Creating-Text in XSLT Specification</a>
   * @xsl.usage advanced
   */
  public class ElemTextLiteral extends ElemTemplateElement
  {
      static final long serialVersionUID = -7872620006767660088L;
  
    /**
     * Tell if space should be preserved.
     * @serial
     */
    private boolean m_preserveSpace;
  
    /**
     * Set whether or not space should be preserved.
     *
     * @param v Boolean flag indicating whether 
     * or not space should be preserved
     */
    public void setPreserveSpace(boolean v)
    {
      m_preserveSpace = v;
    }
  
    /**
     * Get whether or not space should be preserved.
     *
     * @return Boolean flag indicating whether 
     * or not space should be preserved 
     */
    public boolean getPreserveSpace()
    {
      return m_preserveSpace;
    }
  
    /**
     * The character array.
     * @serial
     */
    private char m_ch[];
    
    /**
     * The character array as a string.
     * @serial
     */
    private String m_str;
  
    /**
     * Set the characters that will be output to the result tree..
     *
     * @param v Array of characters that will be output to the result tree 
     */
    public void setChars(char[] v)
    {
      m_ch = v;
    }
  
    /**
     * Get the characters that will be output to the result tree..
     *
     * @return Array of characters that will be output to the result tree
     */
    public char[] getChars()
    {
      return m_ch;
    }
    
    /**
     * Get the value of the node as a string.
     *
     * @return null
     */
    public synchronized String getNodeValue()
    {
  
      if(null == m_str)
      {
        m_str = new String(m_ch);
      }
  
      return m_str;
    }
  
  
    /**
     * Tells if this element should disable escaping.
     * @serial
     */
    private boolean m_disableOutputEscaping = false;
  
    /**
     * Set the "disable-output-escaping" attribute.
     * Normally, the xml output method escapes & and < (and
     * possibly other characters) when outputting text nodes.
     * This ensures that the output is well-formed XML. However,
     * it is sometimes convenient to be able to produce output
     * that is almost, but not quite well-formed XML; for
     * example, the output may include ill-formed sections
     * which are intended to be transformed into well-formed
     * XML by a subsequent non-XML aware process. For this reason,
     * XSLT provides a mechanism for disabling output escaping.
     * An xsl:value-of or xsl:text element may have a
     * disable-output-escaping attribute; the allowed values
     * are yes or no; the default is no; if the value is yes,
     * then a text node generated by instantiating the xsl:value-of
     * or xsl:text element should be output without any escaping.
     * @see <a href="http://www.w3.org/TR/xslt#disable-output-escaping">disable-output-escaping in XSLT Specification</a>
     *
     * @param v Boolean value for "disable-output-escaping" attribute.
     */
    public void setDisableOutputEscaping(boolean v)
    {
      m_disableOutputEscaping = v;
    }
  
    /**
     * Get the "disable-output-escaping" attribute.
     * Normally, the xml output method escapes & and < (and
     * possibly other characters) when outputting text nodes.
     * This ensures that the output is well-formed XML. However,
     * it is sometimes convenient to be able to produce output
     * that is almost, but not quite well-formed XML; for
     * example, the output may include ill-formed sections
     * which are intended to be transformed into well-formed
     * XML by a subsequent non-XML aware process. For this reason,
     * XSLT provides a mechanism for disabling output escaping.
     * An xsl:value-of or xsl:text element may have a
     * disable-output-escaping attribute; the allowed values
     * are yes or no; the default is no; if the value is yes,
     * then a text node generated by instantiating the xsl:value-of
     * or xsl:text element should be output without any escaping.
     * @see <a href="http://www.w3.org/TR/xslt#disable-output-escaping">disable-output-escaping in XSLT Specification</a>
     *
     * @return Boolean value of "disable-output-escaping" attribute.
     */
    public boolean getDisableOutputEscaping()
    {
      return m_disableOutputEscaping;
    }
  
    /**
     * Get an integer representation of the element type.
     *
     * @return An integer representation of the element, defined in the
     *     Constants class.
     * @see org.apache.xalan.templates.Constants
     */
    public int getXSLToken()
    {
      return Constants.ELEMNAME_TEXTLITERALRESULT;
    }
  
    /**
     * Return the node name.
     *
     * @return The element's name
     */
    public String getNodeName()
    {
      return "#Text";
    }
  
    /**
     * Copy the text literal to the result tree.
     *
     * @param transformer non-null reference to the the current transform-time state.
     *
     * @throws TransformerException
     */
    public void execute(
            TransformerImpl transformer)
              throws TransformerException
    {
      try
      {
        SerializationHandler rth = transformer.getResultTreeHandler();
        if (transformer.getDebug()) {
          // flush any pending cached processing before the trace event.
          rth.flushPending();
          transformer.getTraceManager().fireTraceEvent(this);
        }
  
        if (m_disableOutputEscaping)
        {
          rth.processingInstruction(javax.xml.transform.Result.PI_DISABLE_OUTPUT_ESCAPING, "");
        }
  
        rth.characters(m_ch, 0, m_ch.length);
  
        if (m_disableOutputEscaping)
        {
          rth.processingInstruction(javax.xml.transform.Result.PI_ENABLE_OUTPUT_ESCAPING, "");
        }
      }
      catch(SAXException se)
      {
        throw new TransformerException(se);
      }
      finally
      {
        if (transformer.getDebug()) {
          try
          {
              // flush any pending cached processing before sending the trace event
              transformer.getResultTreeHandler().flushPending();
              transformer.getTraceManager().fireTraceEndEvent(this);
          }
          catch (SAXException se)
          {
              throw new TransformerException(se);
          } 
        }
      }
    }
  }
  