Source Code : Xml Reader To Writer

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Xml Reader To Writer

 

/*   Copyright 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.
 */

// Revised from xmlbeans
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.XMLStreamWriter;
import javax.xml.stream.events.XMLEvent;

public final class XmlReaderToWriter {
  private XmlReaderToWriter() {
  }

  public static void writeAll(XMLStreamReader xmlr, XMLStreamWriter writer)
      throws XMLStreamException {
    while (xmlr.hasNext()) {
      write(xmlr, writer);
      xmlr.next();
    }
    write(xmlr, writer); // write the last element
    writer.flush();
  }

  public static void write(XMLStreamReader xmlr, XMLStreamWriter writer) throws XMLStreamException {
    switch (xmlr.getEventType()) {
    case XMLEvent.START_ELEMENT:
      final String localName = xmlr.getLocalName();
      final String namespaceURI = xmlr.getNamespaceURI();
      if (namespaceURI != null && namespaceURI.length() > 0) {
        final String prefix = xmlr.getPrefix();
        if (prefix != null)
          writer.writeStartElement(prefix, localName, namespaceURI);
        else
          writer.writeStartElement(namespaceURI, localName);
      } else {
        writer.writeStartElement(localName);
      }

      for (int i = 0, len = xmlr.getNamespaceCount(); i < len; i++) {
        writer.writeNamespace(xmlr.getNamespacePrefix(i), xmlr.getNamespaceURI(i));
      }

      for (int i = 0, len = xmlr.getAttributeCount(); i < len; i++) {
        String attUri = xmlr.getAttributeNamespace(i);
        if (attUri != null)
          writer.writeAttribute(attUri, xmlr.getAttributeLocalName(i), xmlr.getAttributeValue(i));
        else
          writer.writeAttribute(xmlr.getAttributeLocalName(i), xmlr.getAttributeValue(i));
      }
      break;
    case XMLEvent.END_ELEMENT:
      writer.writeEndElement();
      break;
    case XMLEvent.SPACE:
    case XMLEvent.CHARACTERS:
      writer.writeCharacters(xmlr.getTextCharacters(), xmlr.getTextStart(), xmlr.getTextLength());
      break;
    case XMLEvent.PROCESSING_INSTRUCTION:
      writer.writeProcessingInstruction(xmlr.getPITarget(), xmlr.getPIData());
      break;
    case XMLEvent.CDATA:
      writer.writeCData(xmlr.getText());
      break;

    case XMLEvent.COMMENT:
      writer.writeComment(xmlr.getText());
      break;
    case XMLEvent.ENTITY_REFERENCE:
      writer.writeEntityRef(xmlr.getLocalName());
      break;
    case XMLEvent.START_DOCUMENT:
      String encoding = xmlr.getCharacterEncodingScheme();
      String version = xmlr.getVersion();

      if (encoding != null && version != null)
        writer.writeStartDocument(encoding, version);
      else if (version != null)
        writer.writeStartDocument(xmlr.getVersion());
      break;
    case XMLEvent.END_DOCUMENT:
      writer.writeEndDocument();
      break;
    case XMLEvent.DTD:
      writer.writeDTD(xmlr.getText());
      break;
    }
  }
}

   
  

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