001/** 002 * 003 * Copyright 2016 Fernando Ramirez 004 * 005 * Licensed under the Apache License, Version 2.0 (the "License"); 006 * you may not use this file except in compliance with the License. 007 * You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.jivesoftware.smackx.mam.provider; 018 019import java.io.IOException; 020import java.util.ArrayList; 021import java.util.List; 022 023import org.jivesoftware.smack.packet.XmlEnvironment; 024import org.jivesoftware.smack.provider.IQProvider; 025import org.jivesoftware.smack.xml.XmlPullParser; 026import org.jivesoftware.smack.xml.XmlPullParserException; 027 028import org.jivesoftware.smackx.mam.element.MamElementFactory; 029import org.jivesoftware.smackx.mam.element.MamPrefsIQ; 030import org.jivesoftware.smackx.mam.element.MamPrefsIQ.DefaultBehavior; 031 032import org.jxmpp.jid.Jid; 033import org.jxmpp.jid.impl.JidCreate; 034 035/** 036 * MAM Preferences IQ Provider class. 037 * 038 * @see <a href="http://xmpp.org/extensions/xep-0313.html">XEP-0313: Message 039 * Archive Management</a> 040 * @author Fernando Ramirez 041 * 042 */ 043public class MamPrefsIQProvider extends IQProvider<MamPrefsIQ> { 044 045 public static final MamPrefsIQProvider INSTANCE = new MamPrefsIQProvider(); 046 047 @Override 048 public MamPrefsIQ parse(XmlPullParser parser, int initialDepth, XmlEnvironment xmlEnvironment) throws XmlPullParserException, IOException { 049 MamElementFactory elementFactory = MamElementFactory.forParser(parser); 050 String defaultBehaviorString = parser.getAttributeValue("", "default"); 051 DefaultBehavior defaultBehavior = null; 052 if (defaultBehaviorString != null) { 053 defaultBehavior = DefaultBehavior.valueOf(defaultBehaviorString); 054 } 055 056 List<Jid> alwaysJids = null; 057 List<Jid> neverJids = null; 058 059 outerloop: while (true) { 060 final XmlPullParser.Event eventType = parser.next(); 061 switch (eventType) { 062 case START_ELEMENT: 063 final String name = parser.getName(); 064 switch (name) { 065 case "always": 066 alwaysJids = iterateJids(parser); 067 break; 068 case "never": 069 neverJids = iterateJids(parser); 070 break; 071 } 072 break; 073 case END_ELEMENT: 074 if (parser.getDepth() == initialDepth) { 075 break outerloop; 076 } 077 break; 078 default: 079 // Catch all for incomplete switch (MissingCasesInEnumSwitch) statement. 080 break; 081 } 082 } 083 084 return elementFactory.newPrefsIQ(alwaysJids, neverJids, defaultBehavior); 085 } 086 087 private static List<Jid> iterateJids(XmlPullParser parser) throws XmlPullParserException, IOException { 088 List<Jid> jids = new ArrayList<>(); 089 090 int initialDepth = parser.getDepth(); 091 092 outerloop: while (true) { 093 final XmlPullParser.Event eventType = parser.next(); 094 switch (eventType) { 095 case START_ELEMENT: 096 final String name = parser.getName(); 097 switch (name) { 098 case "jid": 099 parser.next(); 100 jids.add(JidCreate.from(parser.getText())); 101 break; 102 } 103 break; 104 case END_ELEMENT: 105 if (parser.getDepth() == initialDepth) { 106 break outerloop; 107 } 108 break; 109 default: 110 // Catch all for incomplete switch (MissingCasesInEnumSwitch) statement. 111 break; 112 } 113 } 114 115 return jids; 116 } 117 118}