119 lines
4.7 KiB
Java
119 lines
4.7 KiB
Java
/**
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*
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* Copyright the original author or authors
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*
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* 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.pubsub.provider;
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import org.jivesoftware.smack.packet.PacketExtension;
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import org.jivesoftware.smack.provider.PacketExtensionProvider;
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import org.jivesoftware.smack.provider.ProviderManager;
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import org.jivesoftware.smack.util.PacketParserUtils;
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import org.jivesoftware.smack.util.StringUtils;
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import org.jivesoftware.smackx.pubsub.Item;
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import org.jivesoftware.smackx.pubsub.PayloadItem;
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import org.jivesoftware.smackx.pubsub.SimplePayload;
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import org.jivesoftware.smackx.pubsub.packet.PubSubNamespace;
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import org.xmlpull.v1.XmlPullParser;
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/**
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* Parses an <b>item</b> element as is defined in both the {@link PubSubNamespace#BASIC} and
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* {@link PubSubNamespace#EVENT} namespaces. To parse the item contents, it will use whatever
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* {@link PacketExtensionProvider} is registered in <b>smack.providers</b> for its element name and namespace. If no
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* provider is registered, it will return a {@link SimplePayload}.
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*
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* @author Robin Collier
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*/
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public class ItemProvider implements PacketExtensionProvider
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{
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public PacketExtension parseExtension(XmlPullParser parser) throws Exception
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{
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String id = parser.getAttributeValue(null, "id");
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String node = parser.getAttributeValue(null, "node");
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String elem = parser.getName();
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int tag = parser.next();
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if (tag == XmlPullParser.END_TAG)
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{
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return new Item(id, node);
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}
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else
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{
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String payloadElemName = parser.getName();
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String payloadNS = parser.getNamespace();
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if (ProviderManager.getExtensionProvider(payloadElemName, payloadNS) == null)
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{
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boolean done = false;
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boolean isEmptyElement = false;
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StringBuilder payloadText = new StringBuilder();
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while (!done)
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{
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if (tag == XmlPullParser.END_TAG && parser.getName().equals(elem))
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{
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done = true;
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continue;
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}
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else if (parser.getEventType() == XmlPullParser.START_TAG)
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{
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payloadText.append("<").append(parser.getName());
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if (parser.getName().equals(payloadElemName) && (payloadNS.length() > 0))
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payloadText.append(" xmlns=\"").append(payloadNS).append("\"");
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int n = parser.getAttributeCount();
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for (int i = 0; i < n; i++)
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payloadText.append(" ").append(parser.getAttributeName(i)).append("=\"")
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.append(parser.getAttributeValue(i)).append("\"");
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if (parser.isEmptyElementTag())
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{
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payloadText.append("/>");
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isEmptyElement = true;
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}
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else
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{
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payloadText.append(">");
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}
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}
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else if (parser.getEventType() == XmlPullParser.END_TAG)
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{
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if (isEmptyElement)
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{
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isEmptyElement = false;
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}
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else
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{
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payloadText.append("</").append(parser.getName()).append(">");
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}
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}
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else if (parser.getEventType() == XmlPullParser.TEXT)
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{
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payloadText.append(StringUtils.escapeForXML(parser.getText()));
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}
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tag = parser.next();
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}
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return new PayloadItem<SimplePayload>(id, node, new SimplePayload(payloadElemName, payloadNS, payloadText.toString()));
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}
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else
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{
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return new PayloadItem<PacketExtension>(id, node, PacketParserUtils.parsePacketExtension(payloadElemName, payloadNS, parser));
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}
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}
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}
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}
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