totextstream.java

来自「JAVA的一些源码 JAVA2 STANDARD EDITION DEVELO」· Java 代码 · 共 679 行 · 第 1/2 页

                         */                        
                        writer.write(c);
                    }
                }
            }
        }
    }
    else
    {
        // not in CDATA section
        for (int i = start; i < end; i++)
        {
            final char c = ch[i];

            if (S_LINEFEED == c && useLineSep)
            {
                writer.write(m_lineSep, 0, m_lineSepLen);
            }
            else if (c <= M_MAXCHARACTER)
            {
                writer.write(c);
            }
            else if (isUTF16Surrogate(c))
            {
                writeUTF16Surrogate(c, ch, i, end);
                i++; // two input characters processed
            }
            else
            {
                /* The character is greater than the allowed 
                 * maximum value and it is not part of a UTF-16
                 * pair that would be put out as a character reference.
                 */
                String encoding = getEncoding();
                if (encoding != null) 
                {
                    /* The output encoding is known, 
                     * so somthing is wrong.
                     */ 
                    String integralValue = Integer.toString(c);
                    throw new SAXException(XMLMessages.createXMLMessage(
                        XMLErrorResources.ER_ILLEGAL_CHARACTER,
                        new Object[]{ integralValue, encoding}));
                }
                else 
                {
                    /* The output encoding is not known,
                     * so just write it out as-is.
                     */                        
                    writer.write(c);
                }                
            }
        }
    }
}

  /**
   * Receive notification of cdata.
   *
   * <p>The Parser will call this method to report each chunk of
   * character data.  SAX parsers may return all contiguous character
   * data in a single chunk, or they may split it into several
   * chunks; however, all of the characters in any single event
   * must come from the same external entity, so that the Locator
   * provides useful information.</p>
   *
   * <p>The application must not attempt to read from the array
   * outside of the specified range.</p>
   *
   * <p>Note that some parsers will report whitespace using the
   * ignorableWhitespace() method rather than this one (validating
   * parsers must do so).</p>
   *
   * @param ch The characters from the XML document.
   * @param start The start position in the array.
   * @param length The number of characters to read from the array.
   * @throws org.xml.sax.SAXException Any SAX exception, possibly
   *            wrapping another exception.
   * @see #ignorableWhitespace
   * @see org.xml.sax.Locator
   */
  public void cdata(char ch[], int start, int length)
          throws org.xml.sax.SAXException
  {
    try
    {
        writeNormalizedChars(ch, start, length, false, m_lineSepUse);
        if (m_tracer != null)
            super.fireCDATAEvent(ch, start, length);              
    }
    catch(IOException ioe)
    {
      throw new SAXException(ioe);
    }
  }

  /**
   * Receive notification of ignorable whitespace in element content.
   *
   * <p>Validating Parsers must use this method to report each chunk
   * of ignorable whitespace (see the W3C XML 1.0 recommendation,
   * section 2.10): non-validating parsers may also use this method
   * if they are capable of parsing and using content models.</p>
   *
   * <p>SAX parsers may return all contiguous whitespace in a single
   * chunk, or they may split it into several chunks; however, all of
   * the characters in any single event must come from the same
   * external entity, so that the Locator provides useful
   * information.</p>
   *
   * <p>The application must not attempt to read from the array
   * outside of the specified range.</p>
   *
   * @param ch The characters from the XML document.
   * @param start The start position in the array.
   * @param length The number of characters to read from the array.
   * @throws org.xml.sax.SAXException Any SAX exception, possibly
   *            wrapping another exception.
   * @see #characters
   *
   * @throws org.xml.sax.SAXException
   */
  public void ignorableWhitespace(char ch[], int start, int length)
          throws org.xml.sax.SAXException
  {

    try
    {
      writeNormalizedChars(ch, start, length, false, m_lineSepUse);
    }
    catch(IOException ioe)
    {
      throw new SAXException(ioe);
    }
  }

  /**
   * Receive notification of a processing instruction.
   *
   * <p>The Parser will invoke this method once for each processing
   * instruction found: note that processing instructions may occur
   * before or after the main document element.</p>
   *
   * <p>A SAX parser should never report an XML declaration (XML 1.0,
   * section 2.8) or a text declaration (XML 1.0, section 4.3.1)
   * using this method.</p>
   *
   * @param target The processing instruction target.
   * @param data The processing instruction data, or null if
   *        none was supplied.
   * @throws org.xml.sax.SAXException Any SAX exception, possibly
   *            wrapping another exception.
   *
   * @throws org.xml.sax.SAXException
   */
  public void processingInstruction(String target, String data)
          throws org.xml.sax.SAXException
  {
    // flush anything pending first
    flushPending();  
    
    if (m_tracer != null)
        super.fireEscapingEvent(target, data);  
  }

  /**
   * Called when a Comment is to be constructed.
   * Note that Xalan will normally invoke the other version of this method.
   * %REVIEW% In fact, is this one ever needed, or was it a mistake?
   *
   * @param   data  The comment data.
   * @throws org.xml.sax.SAXException Any SAX exception, possibly
   *            wrapping another exception.
   */
  public void comment(String data) throws org.xml.sax.SAXException
  {
      final int length = data.length();
      if (length > m_charsBuff.length)
      {
          m_charsBuff = new char[length*2 + 1];
      }
      data.getChars(0, length, m_charsBuff, 0);
      comment(m_charsBuff, 0, length);
  }

  /**
   * Report an XML comment anywhere in the document.
   *
   * This callback will be used for comments inside or outside the
   * document element, including comments in the external DTD
   * subset (if read).
   *
   * @param ch An array holding the characters in the comment.
   * @param start The starting position in the array.
   * @param length The number of characters to use from the array.
   * @throws org.xml.sax.SAXException The application may raise an exception.
   */
  public void comment(char ch[], int start, int length)
          throws org.xml.sax.SAXException
  {

    flushPending();
    if (m_tracer != null)
        super.fireCommentEvent(ch, start, length);
  }

  /**
   * Receive notivication of a entityReference.
   *
   * @param name non-null reference to the name of the entity.
   *
   * @throws org.xml.sax.SAXException
   */
  public void entityReference(String name) throws org.xml.sax.SAXException
  {
        if (m_tracer != null)
            super.fireEntityReference(name);    
  }
  
    /**
     * @see com.sun.org.apache.xml.internal.serializer.ExtendedContentHandler#addAttribute(String, String, String, String, String)
     */
    public void addAttribute(
        String uri,
        String localName,
        String rawName,
        String type,
        String value)
    {
        // do nothing, just forget all about the attribute
    }
 
    /**
     * @see org.xml.sax.ext.LexicalHandler#endCDATA()
     */
    public void endCDATA() throws SAXException
    {
        // do nothing
    }

    /**
     * @see com.sun.org.apache.xml.internal.serializer.ExtendedContentHandler#endElement(String)
     */
    public void endElement(String elemName) throws SAXException
    {
        if (m_tracer != null)
            super.fireEndElem(elemName);                       
    }
 
    /**
     * From XSLTC
     */
    public void startElement(
    String elementNamespaceURI,
    String elementLocalName,
    String elementName) 
    throws SAXException 
    {
        if (m_needToCallStartDocument)
            startDocumentInternal();        
        // time to fire off startlement event.
        if (m_tracer != null) {
            super.fireStartElem(elementName);
            this.firePseudoAttributes();
        }
        
        return;
    }


    /**
     * From XSLTC
     */
    public void characters(String characters) 
    throws SAXException 
    { 
        final int length = characters.length();
        if (length > m_charsBuff.length)
        {
            m_charsBuff = new char[length*2 + 1];
        }
        characters.getChars(0, length, m_charsBuff, 0);
        characters(m_charsBuff, 0, length); 
    }


    /**
     * From XSLTC
     */
    public void addAttribute(String name, String value)
    {
        // do nothing, forget about the attribute
    }
    
    /**
     * Add a unique attribute
     */
    public void addUniqueAttribute(String qName, String value, int flags)
        throws SAXException
    {
        // do nothing, forget about the attribute 
    }

    public boolean startPrefixMapping(
        String prefix,
        String uri,
        boolean shouldFlush)
        throws SAXException
    {
        // no namespace support for HTML
        return false;
    }


    public void startPrefixMapping(String prefix, String uri)
        throws org.xml.sax.SAXException
    {
        // no namespace support for HTML
    }


    public void namespaceAfterStartElement(
        final String prefix,
        final String uri)
        throws SAXException
    {
        // no namespace support for HTML
    }    

    public void flushPending() throws org.xml.sax.SAXException
    {
            if (m_needToCallStartDocument)
            {
                startDocumentInternal();
                m_needToCallStartDocument = false;
            }
    }
}