XmlReaderToWriter.java Source code

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Here is the source code for XmlReaderToWriter.java

Source

/*   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;
        }
    }
}