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From-SVN: r102074
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Tom Tromey
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354
libjava/classpath/gnu/xml/dom/ls/DomLSSerializer.java
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354
libjava/classpath/gnu/xml/dom/ls/DomLSSerializer.java
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/* DomLSSerializer.java --
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Copyright (C) 1999,2000,2001 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.xml.dom.ls;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.io.StringWriter;
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import java.io.Writer;
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import java.net.HttpURLConnection;
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import java.net.MalformedURLException;
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import java.net.URL;
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import java.net.URLConnection;
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import java.util.Arrays;
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import java.util.List;
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import org.w3c.dom.DOMConfiguration;
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import org.w3c.dom.DOMException;
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import org.w3c.dom.DOMStringList;
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import org.w3c.dom.Node;
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import org.w3c.dom.ls.LSException;
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import org.w3c.dom.ls.LSOutput;
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import org.w3c.dom.ls.LSSerializer;
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import org.w3c.dom.ls.LSSerializerFilter;
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import org.w3c.dom.traversal.NodeFilter;
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import gnu.xml.dom.DomDOMException;
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import gnu.xml.transform.StreamSerializer;
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/**
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* Serialize a DOM node to a stream.
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*
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* @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
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*/
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public class DomLSSerializer
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extends StreamSerializer
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implements LSSerializer, DOMConfiguration, DOMStringList
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{
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private static final List SUPPORTED_PARAMETERS =
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Arrays.asList(new String[] {"discard-default-content",
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"xml-declaration"});
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private LSSerializerFilter filter;
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private StreamSerializer serializer;
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public DomLSSerializer()
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{
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super();
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discardDefaultContent = true;
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}
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// -- LSSerializer --
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public DOMConfiguration getDomConfig()
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{
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return this;
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}
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public String getNewLine()
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{
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return eol;
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}
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public void setNewLine(String newLine)
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{
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if (newLine == null)
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{
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newLine = System.getProperty("line.separator");
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}
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eol = newLine;
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}
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public LSSerializerFilter getFilter()
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{
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return filter;
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}
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public void setFilter(LSSerializerFilter filter)
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{
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this.filter = filter;
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}
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public boolean write(Node node, LSOutput output)
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throws LSException
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{
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OutputStream out = output.getByteStream();
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try
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{
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if (out == null)
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{
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String systemId = output.getSystemId();
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try
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{
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URL url = new URL(systemId);
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URLConnection connection = url.openConnection();
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connection.setDoOutput(true);
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if (connection instanceof HttpURLConnection)
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{
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((HttpURLConnection) connection).setRequestMethod("PUT");
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}
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out = connection.getOutputStream();
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}
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catch (MalformedURLException e)
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{
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File file = new File(systemId);
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out = new FileOutputStream(file);
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}
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}
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serialize(node, out);
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out.flush();
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return true;
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}
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catch (IOException e)
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{
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throw new DomLSException(LSException.SERIALIZE_ERR, e);
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}
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}
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public boolean writeToURI(Node node, String uri)
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throws LSException
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{
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LSOutput output = new DomLSOutput();
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output.setSystemId(uri);
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return write(node, output);
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}
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public String writeToString(Node node)
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throws DOMException, LSException
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{
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Writer writer = new StringWriter();
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LSOutput output = new DomLSOutput();
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output.setCharacterStream(writer);
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write(node, output);
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return writer.toString();
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}
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public void serialize(Node node, OutputStream out)
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throws IOException
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{
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if (filter == null)
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{
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super.serialize(node, out);
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}
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else
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{
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int wts = filter.getWhatToShow();
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if (wts != NodeFilter.SHOW_ALL)
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{
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switch (node.getNodeType())
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{
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case Node.ATTRIBUTE_NODE:
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if ((wts & NodeFilter.SHOW_ATTRIBUTE) == 0)
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{
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super.serialize(node, out);
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return;
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}
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break;
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case Node.TEXT_NODE:
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if ((wts & NodeFilter.SHOW_TEXT) == 0)
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{
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super.serialize(node, out);
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return;
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}
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break;
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case Node.ELEMENT_NODE:
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if ((wts & NodeFilter.SHOW_ELEMENT) == 0)
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{
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super.serialize(node, out);
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return;
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}
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break;
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case Node.CDATA_SECTION_NODE:
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if ((wts & NodeFilter.SHOW_CDATA_SECTION) == 0)
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{
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super.serialize(node, out);
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return;
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}
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break;
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case Node.COMMENT_NODE:
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if ((wts & NodeFilter.SHOW_COMMENT) == 0)
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{
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super.serialize(node, out);
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return;
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}
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break;
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case Node.DOCUMENT_NODE:
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if ((wts & NodeFilter.SHOW_DOCUMENT) == 0)
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{
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super.serialize(node, out);
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return;
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}
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break;
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case Node.DOCUMENT_TYPE_NODE:
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if ((wts & NodeFilter.SHOW_DOCUMENT_TYPE) == 0)
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{
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super.serialize(node, out);
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return;
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}
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break;
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case Node.PROCESSING_INSTRUCTION_NODE:
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if ((wts & NodeFilter.SHOW_PROCESSING_INSTRUCTION) == 0)
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{
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super.serialize(node, out);
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return;
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}
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break;
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case Node.DOCUMENT_FRAGMENT_NODE:
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if ((wts & NodeFilter.SHOW_DOCUMENT_FRAGMENT) == 0)
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{
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super.serialize(node, out);
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return;
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}
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break;
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case Node.ENTITY_NODE:
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if ((wts & NodeFilter.SHOW_ENTITY) == 0)
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{
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super.serialize(node, out);
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return;
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}
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break;
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case Node.ENTITY_REFERENCE_NODE:
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if ((wts & NodeFilter.SHOW_ENTITY_REFERENCE) == 0)
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{
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super.serialize(node, out);
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return;
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}
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break;
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case Node.NOTATION_NODE:
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if ((wts & NodeFilter.SHOW_NOTATION) == 0)
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{
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super.serialize(node, out);
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return;
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}
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break;
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}
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}
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switch (filter.acceptNode(node))
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{
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case NodeFilter.FILTER_ACCEPT:
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super.serialize(node, out);
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break;
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case NodeFilter.FILTER_REJECT:
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break;
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case NodeFilter.FILTER_SKIP:
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Node first = node.getFirstChild();
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if (first != null)
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{
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serialize(first, out);
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}
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break;
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}
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}
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}
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// -- DOMConfiguration --
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public void setParameter(String name, Object value)
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throws DOMException
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{
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if ("discard-default-content".equals(name))
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{
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discardDefaultContent = "true".equals(value.toString());
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}
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else if ("xml-declaration".equals(name))
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{
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xmlDeclaration = "false".equals(value.toString());
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}
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else
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{
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throw new DomDOMException(DOMException.NOT_SUPPORTED_ERR);
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}
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}
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public Object getParameter(String name)
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throws DOMException
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{
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if ("discard-default-content".equals(name))
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{
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return discardDefaultContent ? "true" : "false";
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}
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else if ("xml-declaration".equals(name))
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{
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return xmlDeclaration ? "true" : "false";
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}
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else
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{
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throw new DomDOMException(DOMException.NOT_SUPPORTED_ERR);
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}
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}
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public boolean canSetParameter(String name, Object value)
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{
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return contains(name);
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}
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public DOMStringList getParameterNames()
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{
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return this;
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}
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// -- DOMStringList --
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public String item(int i)
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{
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return (String) SUPPORTED_PARAMETERS.get(i);
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}
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public int getLength()
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{
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return SUPPORTED_PARAMETERS.size();
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}
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public boolean contains(String str)
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{
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return SUPPORTED_PARAMETERS.contains(str);
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}
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}
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