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Smack/source/org/jivesoftware/smackx/pubsub/util/XmlUtils.java

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/**
* All rights reserved. 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.
*/
package org.jivesoftware.smackx.pubsub.util;
import java.io.StringReader;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;
/**
* Simple utility for pretty printing xml.
*
* @author Robin Collier
*/
public class XmlUtils
{
/**
*
* @param header Just a title for the stanza for readability. Single word no spaces since
* it is inserted as the root element in the output.
* @param xml The string to pretty print
*/
static public void prettyPrint(String header, String xml)
{
try
{
Transformer transformer = TransformerFactory.newInstance().newTransformer();
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "3");
if (header != null)
{
xml = "\n<" + header + ">" + xml + "</" + header + '>';
}
transformer.transform(new StreamSource(new StringReader(xml)), new StreamResult(System.out));
}
catch (Exception e)
{
System.out.println("Something wrong with xml in \n---------------\n" + xml + "\n---------------");
e.printStackTrace();
}
}
static public void appendAttribute(StringBuilder builder, String att, String value)
{
builder.append(" ");
builder.append(att);
builder.append("='");
builder.append(value);
builder.append("'");
}
}