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Smack/source/org/jivesoftware/smackx/workgroup/util/MetaDataUtils.java
Matt Tucker 280c4b5a76 First round of refactoring.
git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@2371 b35dd754-fafc-0310-a699-88a17e54d16e
2004-08-17 07:44:36 +00:00

134 lines
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5.1 KiB
Java

/**
* $RCSfile$
* $Revision$
* $Date$
*
* Copyright (C) 2002-2004 Jive Software. All rights reserved.
* ====================================================================
* The Jive Software License (based on Apache Software License, Version 1.1)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by
* Jive Software (http://www.jivesoftware.com)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Smack" and "Jive Software" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please
* contact webmaster@jivesoftware.com.
*
* 5. Products derived from this software may not be called "Smack",
* nor may "Smack" appear in their name, without prior written
* permission of Jive Software.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL JIVE SOFTWARE OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*/
package org.jivesoftware.smackx.workgroup.util;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import java.util.Map;
import java.util.Iterator;
import java.util.Hashtable;
import java.util.Collections;
import java.io.IOException;
import org.jivesoftware.smackx.workgroup.packet.MetaData;
/**
* Utility class for meta-data parsing and writing.
*
* @author Matt Tucker
*/
public class MetaDataUtils {
/**
* Parses any available meta-data and returns it as a Map of String name/value
* pairs. The parser must be positioned at an opening meta-data tag, or an
* empty map will be returned.
*
* @param parser the XML parser positioned at an opening meta-data tag.
* @return the meta-data.
* @throws XmlPullParserException if an error occurs while parsing the XML.
* @throws IOException if an error occurs while parsing the XML.
*/
public static Map parseMetaData(XmlPullParser parser) throws XmlPullParserException,
IOException
{
int eventType = parser.getEventType();
// If correctly positioned on an opening meta-data tag, parse meta-data.
if ((eventType == XmlPullParser.START_TAG)
&& parser.getName().equals(MetaData.ELEMENT_NAME)
&& parser.getNamespace().equals(MetaData.NAMESPACE)) {
Map metaData = new Hashtable();
eventType = parser.nextTag();
// Keep parsing until we've gotten to end of meta-data.
while ((eventType != XmlPullParser.END_TAG)
|| (! parser.getName().equals(MetaData.ELEMENT_NAME))) {
String name = parser.getAttributeValue(0);
String value = parser.nextText();
metaData.put(name, value);
eventType = parser.nextTag();
}
return metaData;
}
return Collections.EMPTY_MAP;
}
/**
* Encodes a Map of String name/value pairs into the meta-data XML format.
*
* @param metaData the Map of meta-data.
* @return the meta-data values in XML form.
*/
public static String encodeMetaData(Map metaData) {
StringBuffer buf = new StringBuffer();
if (metaData != null && metaData.size() > 0) {
buf.append("<metadata xmlns=\"http://www.jivesoftware.com/workgroup/metadata\">");
for (Iterator i=metaData.keySet().iterator(); i.hasNext(); ) {
Object key = i.next();
String value = metaData.get(key).toString();
buf.append("<value name=\"").append(key).append("\">");
buf.append(value);
buf.append("</value>");
}
buf.append("</metadata>");
}
return buf.toString();
}
}