| /** |
| * Copyright 2003-2007 Jive Software. |
| * |
| * 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.workgroup.util; |
| |
| import org.jivesoftware.smackx.workgroup.MetaData; |
| import org.jivesoftware.smack.util.StringUtils; |
| import org.xmlpull.v1.XmlPullParser; |
| import org.xmlpull.v1.XmlPullParserException; |
| |
| import java.io.IOException; |
| import java.util.*; |
| |
| /** |
| * 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 the 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<String, List<String>> 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<String, List<String>> metaData = new Hashtable<String, List<String>>(); |
| |
| 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(); |
| |
| if (metaData.containsKey(name)) { |
| List<String> values = metaData.get(name); |
| values.add(value); |
| } |
| else { |
| List<String> values = new ArrayList<String>(); |
| values.add(value); |
| metaData.put(name, values); |
| } |
| |
| eventType = parser.nextTag(); |
| } |
| |
| return metaData; |
| } |
| |
| return Collections.emptyMap(); |
| } |
| |
| /** |
| * Serializes a Map of String name/value pairs into the meta-data XML format. |
| * |
| * @param metaData the Map of meta-data as Map<String,List<String>> |
| * @return the meta-data values in XML form. |
| */ |
| public static String serializeMetaData(Map<String, List<String>> metaData) { |
| StringBuilder buf = new StringBuilder(); |
| if (metaData != null && metaData.size() > 0) { |
| buf.append("<metadata xmlns=\"http://jivesoftware.com/protocol/workgroup\">"); |
| for (Iterator<String> i = metaData.keySet().iterator(); i.hasNext();) { |
| String key = i.next(); |
| List<String> value = metaData.get(key); |
| for (Iterator<String> it = value.iterator(); it.hasNext();) { |
| String v = it.next(); |
| buf.append("<value name=\"").append(key).append("\">"); |
| buf.append(StringUtils.escapeForXML(v)); |
| buf.append("</value>"); |
| } |
| } |
| buf.append("</metadata>"); |
| } |
| return buf.toString(); |
| } |
| } |