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/**
* Copyright (C) 2011-2015 The XDocReport Team
*
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package fr.opensagres.xdocreport.core.utils;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.Writer;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
import fr.opensagres.xdocreport.core.EncodingConstants;
import fr.opensagres.xdocreport.core.io.IOUtils;
public class DOMUtils
{
public static Document load( InputStream stream )
throws ParserConfigurationException, SAXException, IOException
{
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setNamespaceAware( true );
DocumentBuilder builder = factory.newDocumentBuilder();
return builder.parse( stream );
}
public static Document load( String xml )
throws ParserConfigurationException, SAXException, IOException
{
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setNamespaceAware( true );
DocumentBuilder builder = factory.newDocumentBuilder();
return builder.parse( IOUtils.toInputStream( xml, EncodingConstants.UTF_8.name() ) );
}
public static void save( Node node, Writer writer )
throws TransformerException
{
// Use a Transformer for output
TransformerFactory tFactory = TransformerFactory.newInstance();
Transformer transformer = tFactory.newTransformer();
DOMSource source = new DOMSource( node );
StreamResult result = new StreamResult( writer );
transformer.transform( source, result );
}
public static void save( Node node, OutputStream out )
throws TransformerException
{
// Use a Transformer for output
TransformerFactory tFactory = TransformerFactory.newInstance();
Transformer transformer = tFactory.newTransformer();
DOMSource source = new DOMSource( node );
StreamResult result = new StreamResult( out );
transformer.transform( source, result );
}
/**
* Returns the first child element retrieved by tag name from the parent node and null otherwise.
*
* @param parentNode parent node.
* @param elementName element name to found.
* @return the first child element
*/
public static Element getFirstChildElementByTagName( Node parentNode, String elementName )
{
Element result = null;
if ( parentNode.getNodeType() == Node.DOCUMENT_NODE )
{
result = ( (Document) parentNode ).getDocumentElement();
if ( !result.getNodeName().equals( elementName ) )
{
result = null;
}
}
else
{
NodeList nodes = parentNode.getChildNodes();
Node node;
for ( int i = 0; i < nodes.getLength(); i++ )
{
node = nodes.item( i );
if ( node.getNodeType() == Node.ELEMENT_NODE && node.getNodeName().equals( elementName ) )
{
result = (Element) node;
break;
}
}
}
return result;
}
/**
* Returns list of the first child element retrieved by tag name from the parent node and null otherwise.
*
* @param parentNode parent node.
* @param elementName element name to found.
* @return list of the first child element
*/
public static Collection getFirstChildElementsByTagName( Node contextNode, String elementName )
{
Collection elements = null;
Element result = null;
if ( contextNode.getNodeType() == Node.DOCUMENT_NODE )
{
result = ( (Document) contextNode ).getDocumentElement();
if ( !result.getNodeName().equals( elementName ) )
{
result = null;
}
}
else
{
NodeList nodes = contextNode.getChildNodes();
Node node;
for ( int i = 0; i < nodes.getLength(); i++ )
{
node = nodes.item( i );
if ( node.getNodeType() == Node.ELEMENT_NODE && node.getNodeName().equals( elementName ) )
{
if ( elements == null )
{
elements = new ArrayList();
}
result = (Element) node;
elements.add( result );
}
}
}
if ( elements == null )
{
return Collections.emptyList();
}
return elements;
}
}