102 lines
3.4 KiB
Java
102 lines
3.4 KiB
Java
/**
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* $RCSfile$
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* $Revision$
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* $Date$
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*
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* Copyright 2003-2004 Jive Software.
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*
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* All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jivesoftware.smackx.workgroup.util;
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import org.xmlpull.v1.XmlPullParser;
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import org.xmlpull.v1.XmlPullParserException;
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import java.util.Map;
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import java.util.Iterator;
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import java.util.Hashtable;
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import java.util.Collections;
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import java.io.IOException;
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import org.jivesoftware.smackx.workgroup.packet.MetaData;
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/**
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* Utility class for meta-data parsing and writing.
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*
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* @author Matt Tucker
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*/
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public class MetaDataUtils {
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/**
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* Parses any available meta-data and returns it as a Map of String name/value
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* pairs. The parser must be positioned at an opening meta-data tag, or an
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* empty map will be returned.
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*
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* @param parser the XML parser positioned at an opening meta-data tag.
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* @return the meta-data.
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* @throws XmlPullParserException if an error occurs while parsing the XML.
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* @throws IOException if an error occurs while parsing the XML.
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*/
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public static Map parseMetaData(XmlPullParser parser) throws XmlPullParserException,
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IOException
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{
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int eventType = parser.getEventType();
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// If correctly positioned on an opening meta-data tag, parse meta-data.
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if ((eventType == XmlPullParser.START_TAG)
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&& parser.getName().equals(MetaData.ELEMENT_NAME)
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&& parser.getNamespace().equals(MetaData.NAMESPACE)) {
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Map metaData = new Hashtable();
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eventType = parser.nextTag();
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// Keep parsing until we've gotten to end of meta-data.
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while ((eventType != XmlPullParser.END_TAG)
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|| (! parser.getName().equals(MetaData.ELEMENT_NAME))) {
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String name = parser.getAttributeValue(0);
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String value = parser.nextText();
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metaData.put(name, value);
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eventType = parser.nextTag();
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}
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return metaData;
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}
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return Collections.EMPTY_MAP;
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}
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/**
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* Encodes a Map of String name/value pairs into the meta-data XML format.
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*
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* @param metaData the Map of meta-data.
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* @return the meta-data values in XML form.
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*/
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public static String encodeMetaData(Map metaData) {
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StringBuffer buf = new StringBuffer();
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if (metaData != null && metaData.size() > 0) {
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buf.append("<metadata xmlns=\"http://www.jivesoftware.com/workgroup/metadata\">");
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for (Iterator i=metaData.keySet().iterator(); i.hasNext(); ) {
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Object key = i.next();
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String value = metaData.get(key).toString();
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buf.append("<value name=\"").append(key).append("\">");
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buf.append(value);
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buf.append("</value>");
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}
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buf.append("</metadata>");
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}
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return buf.toString();
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}
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} |