src/com/sun/org/apache/xml/internal/serialize/TextSerializer.java - platform/external/jetbrains/jdk8u_jaxp - Git at Google

 /*
  * reserved comment block
  * DO NOT REMOVE OR ALTER!
  */
 /*
  * Copyright 1999-2002,2004 The Apache Software Foundation.
  *
  * Licensed 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.
  */


 // Sep 14, 2000:
 //  Fixed serializer to report IO exception directly, instead at
 //  the end of document processing.
 //  Reported by Patrick Higgins <phiggins@transzap.com>


 package com.sun.org.apache.xml.internal.serialize;


 import java.io.IOException;

 import org.w3c.dom.Element;
 import org.w3c.dom.Node;
 import org.xml.sax.AttributeList;
 import org.xml.sax.Attributes;
 import org.xml.sax.SAXException;


 /**
  * Implements a text serializer supporting both DOM and SAX
  * serializing. For usage instructions see {@link Serializer}.
  * <p>
  * If an output stream is used, the encoding is taken from the
  * output format (defaults to <tt>UTF-8</tt>). If a writer is
  * used, make sure the writer uses the same encoding (if applies)
  * as specified in the output format.
  * <p>
  * The serializer supports both DOM and SAX. DOM serializing is done
  * by calling {@link #serialize} and SAX serializing is done by firing
  * SAX events and using the serializer as a document handler.
  * <p>
  * If an I/O exception occurs while serializing, the serializer
  * will not throw an exception directly, but only throw it
  * at the end of serializing (either DOM or SAX's {@link
  * org.xml.sax.DocumentHandler#endDocument}.
  *
  *
  * @author <a href="mailto:arkin@intalio.com">Assaf Arkin</a>
  * @see Serializer
  */
 public class TextSerializer
     extends BaseMarkupSerializer
 {


     /**
      * Constructs a new serializer. The serializer cannot be used without
      * calling {@link #setOutputCharStream} or {@link #setOutputByteStream}
      * first.
      */
     public TextSerializer()
     {
         super( new OutputFormat( Method.TEXT, null, false ) );
     }


     public void setOutputFormat( OutputFormat format )
     {
         super.setOutputFormat( format != null ? format : new OutputFormat( Method.TEXT, null, false ) );
     }


     //-----------------------------------------//
     // SAX content handler serializing methods //
     //-----------------------------------------//


     public void startElement( String namespaceURI, String localName,
                               String rawName, Attributes attrs )
         throws SAXException
     {
         startElement( rawName == null ? localName : rawName, null );
     }


     public void endElement( String namespaceURI, String localName,
                             String rawName )
         throws SAXException
     {
         endElement( rawName == null ? localName : rawName );
     }


     //------------------------------------------//
     // SAX document handler serializing methods //
     //------------------------------000---------//


     public void startElement( String tagName, AttributeList attrs )
         throws SAXException
     {
         boolean      preserveSpace;
         ElementState state;

         try {
             state = getElementState();
             if ( isDocumentState() ) {
                 // If this is the root element handle it differently.
                 // If the first root element in the document, serialize
                 // the document's DOCTYPE. Space preserving defaults
                 // to that of the output format.
                 if ( ! _started )
                     startDocument( tagName );
             }
             // For any other element, if first in parent, then
             // use the parnet's space preserving.
             preserveSpace = state.preserveSpace;

             // Do not change the current element state yet.
             // This only happens in endElement().

             // Ignore all other attributes of the element, only printing
             // its contents.

             // Now it's time to enter a new element state
             // with the tag name and space preserving.
             // We still do not change the curent element state.
             state = enterElementState( null, null, tagName, preserveSpace );
         } catch ( IOException except ) {
             throw new SAXException( except );
         }
     }


     public void endElement( String tagName )
         throws SAXException
     {
         try {
             endElementIO( tagName );
         } catch ( IOException except ) {
             throw new SAXException( except );
         }
     }


     public void endElementIO( String tagName )
         throws IOException
     {
         ElementState state;

         // Works much like content() with additions for closing
         // an element. Note the different checks for the closed
         // element's state and the parent element's state.
         state = getElementState();
         // Leave the element state and update that of the parent
         // (if we're not root) to not empty and after element.
         state = leaveElementState();
         state.afterElement = true;
         state.empty = false;
         if ( isDocumentState() )
             _printer.flush();
     }


     public void processingInstructionIO( String target, String code ) throws IOException
     {
     }


     public void comment( String text )
     {
     }


     public void comment( char[] chars, int start, int length )
     {
     }


     public void characters( char[] chars, int start, int length )
         throws SAXException
     {
         ElementState state;

         try {
             state = content();
             state.doCData = state.inCData = false;
             printText( chars, start, length, true, true );
         } catch ( IOException except ) {
             throw new SAXException( except );
         }
     }


     protected void characters( String text, boolean unescaped )
         throws IOException
     {
         ElementState state;

         state = content();
         state.doCData = state.inCData = false;
         printText( text, true, true );
     }


     //------------------------------------------//
     // Generic node serializing methods methods //
     //------------------------------------------//


     /**
      * Called to serialize the document's DOCTYPE by the root element.
      * <p>
      * This method will check if it has not been called before ({@link #_started}),
      * will serialize the document type declaration, and will serialize all
      * pre-root comments and PIs that were accumulated in the document
      * (see {@link #serializePreRoot}). Pre-root will be serialized even if
      * this is not the first root element of the document.
      */
     protected void startDocument( String rootTagName )
         throws IOException
     {
         // Required to stop processing the DTD, even though the DTD
         // is not printed.
         _printer.leaveDTD();

         _started = true;
         // Always serialize these, even if not te first root element.
         serializePreRoot();
     }


     /**
      * Called to serialize a DOM element. Equivalent to calling {@link
      * #startElement}, {@link #endElement} and serializing everything
      * inbetween, but better optimized.
      */
     protected void serializeElement( Element elem )
         throws IOException
     {
         Node         child;
         ElementState state;
         boolean      preserveSpace;
         String       tagName;

         tagName = elem.getTagName();
         state = getElementState();
         if ( isDocumentState() ) {
             // If this is the root element handle it differently.
             // If the first root element in the document, serialize
             // the document's DOCTYPE. Space preserving defaults
             // to that of the output format.
             if ( ! _started )
                 startDocument( tagName );
         }
         // For any other element, if first in parent, then
         // use the parnet's space preserving.
         preserveSpace = state.preserveSpace;

         // Do not change the current element state yet.
         // This only happens in endElement().

         // Ignore all other attributes of the element, only printing
         // its contents.

         // If element has children, then serialize them, otherwise
         // serialize en empty tag.
         if ( elem.hasChildNodes() ) {
             // Enter an element state, and serialize the children
             // one by one. Finally, end the element.
             state = enterElementState( null, null, tagName, preserveSpace );
             child = elem.getFirstChild();
             while ( child != null ) {
                 serializeNode( child );
                 child = child.getNextSibling();
             }
             endElementIO( tagName );
         } else {
             if ( ! isDocumentState() ) {
                 // After element but parent element is no longer empty.
                 state.afterElement = true;
                 state.empty = false;
             }
         }
     }


     /**
      * Serialize the DOM node. This method is unique to the Text serializer.
      *
      * @param node The node to serialize
      */
     protected void serializeNode( Node node )
         throws IOException
     {
         // Based on the node type call the suitable SAX handler.
         // Only comments entities and documents which are not
         // handled by SAX are serialized directly.
         switch ( node.getNodeType() ) {
         case Node.TEXT_NODE : {
             String text;

             text = node.getNodeValue();
             if ( text != null )
                 characters( node.getNodeValue(), true );
             break;
         }

         case Node.CDATA_SECTION_NODE : {
             String text;

             text = node.getNodeValue();
             if ( text != null )
                 characters( node.getNodeValue(), true );
             break;
         }

         case Node.COMMENT_NODE :
             break;

         case Node.ENTITY_REFERENCE_NODE :
             // Ignore.
             break;

         case Node.PROCESSING_INSTRUCTION_NODE :
             break;

         case Node.ELEMENT_NODE :
             serializeElement( (Element) node );
             break;

         case Node.DOCUMENT_NODE :
             // !!! Fall through
         case Node.DOCUMENT_FRAGMENT_NODE : {
             Node         child;

             // By definition this will happen if the node is a document,
             // document fragment, etc. Just serialize its contents. It will
             // work well for other nodes that we do not know how to serialize.
             child = node.getFirstChild();
             while ( child != null ) {
                 serializeNode( child );
                 child = child.getNextSibling();
             }
             break;
         }

         default:
             break;
         }
     }


     protected ElementState content()
     {
         ElementState state;

         state = getElementState();
         if ( ! isDocumentState() ) {
             // If this is the first content in the element,
             // change the state to not-empty.
             if ( state.empty )
                 state.empty = false;
             // Except for one content type, all of them
             // are not last element. That one content
             // type will take care of itself.
             state.afterElement = false;
         }
         return state;
     }


     protected String getEntityRef( int ch )
     {
         return null;
     }


 }
	/*
	* reserved comment block
	* DO NOT REMOVE OR ALTER!
	*/
	/*
	* Copyright 1999-2002,2004 The Apache Software Foundation.
	*
	* Licensed 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.
	*/


	// Sep 14, 2000:
	// Fixed serializer to report IO exception directly, instead at
	// the end of document processing.
	// Reported by Patrick Higgins <phiggins@transzap.com>


	package com.sun.org.apache.xml.internal.serialize;


	import java.io.IOException;

	import org.w3c.dom.Element;
	import org.w3c.dom.Node;
	import org.xml.sax.AttributeList;
	import org.xml.sax.Attributes;
	import org.xml.sax.SAXException;


	/**
	* Implements a text serializer supporting both DOM and SAX
	* serializing. For usage instructions see {@link Serializer}.
	* <p>
	* If an output stream is used, the encoding is taken from the
	* output format (defaults to <tt>UTF-8</tt>). If a writer is
	* used, make sure the writer uses the same encoding (if applies)
	* as specified in the output format.
	* <p>
	* The serializer supports both DOM and SAX. DOM serializing is done
	* by calling {@link #serialize} and SAX serializing is done by firing
	* SAX events and using the serializer as a document handler.
	* <p>
	* If an I/O exception occurs while serializing, the serializer
	* will not throw an exception directly, but only throw it
	* at the end of serializing (either DOM or SAX's {@link
	* org.xml.sax.DocumentHandler#endDocument}.
	*
	*
	* @author <a href="mailto:arkin@intalio.com">Assaf Arkin</a>
	* @see Serializer
	*/
	public class TextSerializer
	extends BaseMarkupSerializer
	{


	/**
	* Constructs a new serializer. The serializer cannot be used without
	* calling {@link #setOutputCharStream} or {@link #setOutputByteStream}
	* first.
	*/
	public TextSerializer()
	{
	super( new OutputFormat( Method.TEXT, null, false ) );
	}


	public void setOutputFormat( OutputFormat format )
	{
	super.setOutputFormat( format != null ? format : new OutputFormat( Method.TEXT, null, false ) );
	}


	//-----------------------------------------//
	// SAX content handler serializing methods //
	//-----------------------------------------//


	public void startElement( String namespaceURI, String localName,
	String rawName, Attributes attrs )
	throws SAXException
	{
	startElement( rawName == null ? localName : rawName, null );
	}


	public void endElement( String namespaceURI, String localName,
	String rawName )
	throws SAXException
	{
	endElement( rawName == null ? localName : rawName );
	}


	//------------------------------------------//
	// SAX document handler serializing methods //
	//------------------------------000---------//


	public void startElement( String tagName, AttributeList attrs )
	throws SAXException
	{
	boolean preserveSpace;
	ElementState state;

	try {
	state = getElementState();
	if ( isDocumentState() ) {
	// If this is the root element handle it differently.
	// If the first root element in the document, serialize
	// the document's DOCTYPE. Space preserving defaults
	// to that of the output format.
	if ( ! _started )
	startDocument( tagName );
	}
	// For any other element, if first in parent, then
	// use the parnet's space preserving.
	preserveSpace = state.preserveSpace;

	// Do not change the current element state yet.
	// This only happens in endElement().

	// Ignore all other attributes of the element, only printing
	// its contents.

	// Now it's time to enter a new element state
	// with the tag name and space preserving.
	// We still do not change the curent element state.
	state = enterElementState( null, null, tagName, preserveSpace );
	} catch ( IOException except ) {
	throw new SAXException( except );
	}
	}


	public void endElement( String tagName )
	throws SAXException
	{
	try {
	endElementIO( tagName );
	} catch ( IOException except ) {
	throw new SAXException( except );
	}
	}


	public void endElementIO( String tagName )
	throws IOException
	{
	ElementState state;

	// Works much like content() with additions for closing
	// an element. Note the different checks for the closed
	// element's state and the parent element's state.
	state = getElementState();
	// Leave the element state and update that of the parent
	// (if we're not root) to not empty and after element.
	state = leaveElementState();
	state.afterElement = true;
	state.empty = false;
	if ( isDocumentState() )
	_printer.flush();
	}


	public void processingInstructionIO( String target, String code ) throws IOException
	{
	}


	public void comment( String text )
	{
	}


	public void comment( char[] chars, int start, int length )
	{
	}


	public void characters( char[] chars, int start, int length )
	throws SAXException
	{
	ElementState state;

	try {
	state = content();
	state.doCData = state.inCData = false;
	printText( chars, start, length, true, true );
	} catch ( IOException except ) {
	throw new SAXException( except );
	}
	}


	protected void characters( String text, boolean unescaped )
	throws IOException
	{
	ElementState state;

	state = content();
	state.doCData = state.inCData = false;
	printText( text, true, true );
	}


	//------------------------------------------//
	// Generic node serializing methods methods //
	//------------------------------------------//


	/**
	* Called to serialize the document's DOCTYPE by the root element.
	* <p>
	* This method will check if it has not been called before ({@link #_started}),
	* will serialize the document type declaration, and will serialize all
	* pre-root comments and PIs that were accumulated in the document
	* (see {@link #serializePreRoot}). Pre-root will be serialized even if
	* this is not the first root element of the document.
	*/
	protected void startDocument( String rootTagName )
	throws IOException
	{
	// Required to stop processing the DTD, even though the DTD
	// is not printed.
	_printer.leaveDTD();

	_started = true;
	// Always serialize these, even if not te first root element.
	serializePreRoot();
	}


	/**
	* Called to serialize a DOM element. Equivalent to calling {@link
	* #startElement}, {@link #endElement} and serializing everything
	* inbetween, but better optimized.
	*/
	protected void serializeElement( Element elem )
	throws IOException
	{
	Node child;
	ElementState state;
	boolean preserveSpace;
	String tagName;

	tagName = elem.getTagName();
	state = getElementState();
	if ( isDocumentState() ) {
	// If this is the root element handle it differently.
	// If the first root element in the document, serialize
	// the document's DOCTYPE. Space preserving defaults
	// to that of the output format.
	if ( ! _started )
	startDocument( tagName );
	}
	// For any other element, if first in parent, then
	// use the parnet's space preserving.
	preserveSpace = state.preserveSpace;

	// Do not change the current element state yet.
	// This only happens in endElement().

	// Ignore all other attributes of the element, only printing
	// its contents.

	// If element has children, then serialize them, otherwise
	// serialize en empty tag.
	if ( elem.hasChildNodes() ) {
	// Enter an element state, and serialize the children
	// one by one. Finally, end the element.
	state = enterElementState( null, null, tagName, preserveSpace );
	child = elem.getFirstChild();
	while ( child != null ) {
	serializeNode( child );
	child = child.getNextSibling();
	}
	endElementIO( tagName );
	} else {
	if ( ! isDocumentState() ) {
	// After element but parent element is no longer empty.
	state.afterElement = true;
	state.empty = false;
	}
	}
	}


	/**
	* Serialize the DOM node. This method is unique to the Text serializer.
	*
	* @param node The node to serialize
	*/
	protected void serializeNode( Node node )
	throws IOException
	{
	// Based on the node type call the suitable SAX handler.
	// Only comments entities and documents which are not
	// handled by SAX are serialized directly.
	switch ( node.getNodeType() ) {
	case Node.TEXT_NODE : {
	String text;

	text = node.getNodeValue();
	if ( text != null )
	characters( node.getNodeValue(), true );
	break;
	}

	case Node.CDATA_SECTION_NODE : {
	String text;

	text = node.getNodeValue();
	if ( text != null )
	characters( node.getNodeValue(), true );
	break;
	}

	case Node.COMMENT_NODE :
	break;

	case Node.ENTITY_REFERENCE_NODE :
	// Ignore.
	break;

	case Node.PROCESSING_INSTRUCTION_NODE :
	break;

	case Node.ELEMENT_NODE :
	serializeElement( (Element) node );
	break;

	case Node.DOCUMENT_NODE :
	// !!! Fall through
	case Node.DOCUMENT_FRAGMENT_NODE : {
	Node child;

	// By definition this will happen if the node is a document,
	// document fragment, etc. Just serialize its contents. It will
	// work well for other nodes that we do not know how to serialize.
	child = node.getFirstChild();
	while ( child != null ) {
	serializeNode( child );
	child = child.getNextSibling();
	}
	break;
	}

	default:
	break;
	}
	}


	protected ElementState content()
	{
	ElementState state;

	state = getElementState();
	if ( ! isDocumentState() ) {
	// If this is the first content in the element,
	// change the state to not-empty.
	if ( state.empty )
	state.empty = false;
	// Except for one content type, all of them
	// are not last element. That one content
	// type will take care of itself.
	state.afterElement = false;
	}
	return state;
	}


	protected String getEntityRef( int ch )
	{
	return null;
	}


	}