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/* XMLEventWriterImpl.java --

   Copyright (C) 2005  Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 2, or (at your option)

any later version.

GNU Classpath is distributed in the hope that it will be useful, but

WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

General Public License for more details.

You should have received a copy of the GNU General Public License

along with GNU Classpath; see the file COPYING.  If not, write to the

Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

02110-1301 USA.

Linking this library statically or dynamically with other modules is

making a combined work based on this library.  Thus, the terms and

conditions of the GNU General Public License cover the whole

combination.

As a special exception, the copyright holders of this library give you

permission to link this library with independent modules to produce an

executable, regardless of the license terms of these independent

modules, and to copy and distribute the resulting executable under

terms of your choice, provided that you also meet, for each linked

independent module, the terms and conditions of the license of that

module.  An independent module is a module which is not derived from

or based on this library.  If you modify this library, you may extend

this exception to your version of the library, but you are not

obligated to do so.  If you do not wish to do so, delete this

exception statement from your version. */

package gnu.xml.stream;

import javax.xml.namespace.NamespaceContext;

import javax.xml.namespace.QName;

import javax.xml.stream.XMLEventReader;

import javax.xml.stream.XMLEventWriter;

import javax.xml.stream.XMLStreamConstants;

import javax.xml.stream.XMLStreamException;

import javax.xml.stream.XMLStreamWriter;

import javax.xml.stream.events.Attribute;

import javax.xml.stream.events.Characters;

import javax.xml.stream.events.Comment;

import javax.xml.stream.events.DTD;

import javax.xml.stream.events.Namespace;

import javax.xml.stream.events.ProcessingInstruction;

import javax.xml.stream.events.StartDocument;

import javax.xml.stream.events.StartElement;

import javax.xml.stream.events.XMLEvent;

/**

 * Writer to write events to an underlying XML stream writer.

 *

 * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>

 */

public class XMLEventWriterImpl

  implements XMLEventWriter

{

  protected final XMLStreamWriter writer;

  protected XMLEventWriterImpl(XMLStreamWriter writer)

  {

    this.writer = writer;

  }

  public void flush()

    throws XMLStreamException

  {

    writer.flush();

  }

  public void close()

    throws XMLStreamException

  {

    writer.close();

  }

  public void add(XMLEvent event)

    throws XMLStreamException

  {

    QName name;

    String uri;

    switch (event.getEventType())

      {

      case XMLStreamConstants.START_ELEMENT:

        StartElement startElement = event.asStartElement();

        name = startElement.getName();

        uri = name.getNamespaceURI();

        if (uri != null && !"".equals(uri))

          writer.writeStartElement(name.getPrefix(), name.getLocalPart(), uri);

        else

          writer.writeStartElement(name.getLocalPart());

        break;

      case XMLStreamConstants.END_ELEMENT:

        writer.writeEndElement();

        break;

      case XMLStreamConstants.ATTRIBUTE:

        Attribute attribute = (Attribute) event;

        name = attribute.getName();

        uri = name.getNamespaceURI();

        if (uri != null && !"".equals(uri))

          writer.writeAttribute(name.getPrefix(), uri, name.getLocalPart(),

                                attribute.getValue());

        else

          writer.writeAttribute(name.getLocalPart(), attribute.getValue());

        break;

      case XMLStreamConstants.NAMESPACE:

        Namespace namespace = (Namespace) event;

        uri = namespace.getNamespaceURI();

        writer.writeNamespace(namespace.getPrefix(), uri);

        break;

      case XMLStreamConstants.PROCESSING_INSTRUCTION:

        ProcessingInstruction pi = (ProcessingInstruction) event;

        String data = pi.getData();

        if (data == null)

          writer.writeProcessingInstruction(pi.getTarget());

        else

          writer.writeProcessingInstruction(pi.getTarget(), data);

        break;

      case XMLStreamConstants.COMMENT:

        Comment comment = (Comment) event;

        writer.writeComment(comment.getText());

        break;

      case XMLStreamConstants.START_DOCUMENT:

        StartDocument startDocument = (StartDocument) event;

        writer.writeStartDocument(startDocument.getVersion());

        break;

      case XMLStreamConstants.END_DOCUMENT:

        writer.writeEndDocument();

        break;

      case XMLStreamConstants.DTD:

        DTD dtd = (DTD) event;

        writer.writeDTD(dtd.getDocumentTypeDeclaration());

        break;

      case XMLStreamConstants.CHARACTERS:

      case XMLStreamConstants.SPACE:

        Characters characters = event.asCharacters();

        writer.writeCharacters(characters.getData());

        break;

      case XMLStreamConstants.CDATA:

        Characters cdata = event.asCharacters();

        writer.writeCData(cdata.getData());

        break;

      }

  }

  public void add(XMLEventReader reader)

    throws XMLStreamException

  {

    while (reader.hasNext())

      add(reader.next());

  }

  public String getPrefix(String uri)

    throws XMLStreamException

  {

    return writer.getPrefix(uri);

  }

  public void setPrefix(String prefix, String uri)

    throws XMLStreamException

  {

    writer.setPrefix(prefix, uri);

  }

  public void setDefaultNamespace(String uri)

    throws XMLStreamException

  {

    writer.setDefaultNamespace(uri);

  }

  public void setNamespaceContext(NamespaceContext context)

    throws XMLStreamException

  {

    writer.setNamespaceContext(context);

  }

  public NamespaceContext getNamespaceContext()

  {

    return writer.getNamespaceContext();

  }

}