1d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen/** 2d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * $RCSfile$ 3d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * $Revision$ 4d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * $Date$ 5d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 6d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Copyright 2003-2007 Jive Software. 7d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 8d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); 9d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * you may not use this file except in compliance with the License. 10d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * You may obtain a copy of the License at 11d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 12d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * http://www.apache.org/licenses/LICENSE-2.0 13d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 14d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Unless required by applicable law or agreed to in writing, software 15d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * distributed under the License is distributed on an "AS IS" BASIS, 16d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 17d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * See the License for the specific language governing permissions and 18d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * limitations under the License. 19d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 20d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 21d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chenpackage org.jivesoftware.smackx.provider; 22d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 23d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chenimport org.jivesoftware.smack.packet.PacketExtension; 24d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chenimport org.jivesoftware.smack.provider.PacketExtensionProvider; 25d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chenimport org.jivesoftware.smack.util.StringUtils; 26d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chenimport org.jivesoftware.smackx.packet.XHTMLExtension; 27d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chenimport org.xmlpull.v1.XmlPullParser; 28d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 29d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen/** 30d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * The XHTMLExtensionProvider parses XHTML packets. 31d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 32d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * @author Gaston Dombiak 33d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 34d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chenpublic class XHTMLExtensionProvider implements PacketExtensionProvider { 35d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 36d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen /** 37d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Creates a new XHTMLExtensionProvider. 38d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * ProviderManager requires that every PacketExtensionProvider has a public, no-argument constructor 39d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 40d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public XHTMLExtensionProvider() { 41d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 42d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 43d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen /** 44d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Parses a XHTMLExtension packet (extension sub-packet). 45d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 46d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * @param parser the XML parser, positioned at the starting element of the extension. 47d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * @return a PacketExtension. 48d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * @throws Exception if a parsing error occurs. 49d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 50d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public PacketExtension parseExtension(XmlPullParser parser) 51d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen throws Exception { 52d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen XHTMLExtension xhtmlExtension = new XHTMLExtension(); 53d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen boolean done = false; 54d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen StringBuilder buffer = new StringBuilder(); 55d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen int startDepth = parser.getDepth(); 56d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen int depth = parser.getDepth(); 57d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen String lastTag = ""; 58d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen while (!done) { 59d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen int eventType = parser.next(); 60d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen if (eventType == XmlPullParser.START_TAG) { 61d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen if (parser.getName().equals("body")) { 62d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen buffer = new StringBuilder(); 63d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen depth = parser.getDepth(); 64d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 65d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen lastTag = parser.getText(); 66d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen buffer.append(parser.getText()); 67d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } else if (eventType == XmlPullParser.TEXT) { 68d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen if (buffer != null) { 69d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen // We need to return valid XML so any inner text needs to be re-escaped 70d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen buffer.append(StringUtils.escapeForXML(parser.getText())); 71d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 72d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } else if (eventType == XmlPullParser.END_TAG) { 73d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen if (parser.getName().equals("body") && parser.getDepth() <= depth) { 74d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen buffer.append(parser.getText()); 75d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen xhtmlExtension.addBody(buffer.toString()); 76d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 77d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen else if (parser.getName().equals(xhtmlExtension.getElementName()) 78d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen && parser.getDepth() <= startDepth) { 79d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen done = true; 80d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 81d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen else { 82d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen // This is a check for tags that are both a start and end tag like <br/> 83d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen // So that they aren't doubled 84d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen if(lastTag == null || !lastTag.equals(parser.getText())) { 85d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen buffer.append(parser.getText()); 86d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 87d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 88d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 89d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 90d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 91d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen return xhtmlExtension; 92d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 93d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 94d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen} 95