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/**
* $RCSfile$
* $Revision$
* $Date$
*
* 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.provider;
import org.jivesoftware.smack.packet.PacketExtension;
import org.jivesoftware.smack.provider.PacketExtensionProvider;
import org.jivesoftware.smack.util.StringUtils;
import org.jivesoftware.smackx.packet.XHTMLExtension;
import org.xmlpull.v1.XmlPullParser;
/**
* The XHTMLExtensionProvider parses XHTML packets.
*
* @author Gaston Dombiak
*/
public class XHTMLExtensionProvider implements PacketExtensionProvider {
/**
* Creates a new XHTMLExtensionProvider.
* ProviderManager requires that every PacketExtensionProvider has a public, no-argument constructor
*/
public XHTMLExtensionProvider() {
}
/**
* Parses a XHTMLExtension packet (extension sub-packet).
*
* @param parser the XML parser, positioned at the starting element of the extension.
* @return a PacketExtension.
* @throws Exception if a parsing error occurs.
*/
public PacketExtension parseExtension(XmlPullParser parser)
throws Exception {
XHTMLExtension xhtmlExtension = new XHTMLExtension();
boolean done = false;
StringBuilder buffer = new StringBuilder();
int startDepth = parser.getDepth();
int depth = parser.getDepth();
String lastTag = "";
while (!done) {
int eventType = parser.next();
if (eventType == XmlPullParser.START_TAG) {
if (parser.getName().equals("body")) {
buffer = new StringBuilder();
depth = parser.getDepth();
}
lastTag = parser.getText();
buffer.append(parser.getText());
} else if (eventType == XmlPullParser.TEXT) {
if (buffer != null) {
// We need to return valid XML so any inner text needs to be re-escaped
buffer.append(StringUtils.escapeForXML(parser.getText()));
}
} else if (eventType == XmlPullParser.END_TAG) {
if (parser.getName().equals("body") && parser.getDepth() <= depth) {
buffer.append(parser.getText());
xhtmlExtension.addBody(buffer.toString());
}
else if (parser.getName().equals(xhtmlExtension.getElementName())
&& parser.getDepth() <= startDepth) {
done = true;
}
else {
// This is a check for tags that are both a start and end tag like <br/>
// So that they aren't doubled
if(lastTag == null || !lastTag.equals(parser.getText())) {
buffer.append(parser.getText());
}
}
}
}
return xhtmlExtension;
}
}
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