75 lines
3.1 KiB
Java
75 lines
3.1 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 java.io.IOException;
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import java.text.ParseException;
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import org.jivesoftware.smack.packet.ExtensionElement;
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import org.jivesoftware.smack.provider.ExtensionElementProvider;
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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.smackx.pubsub.Item;
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import org.jivesoftware.smackx.pubsub.Item.ItemNamespace;
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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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import org.xmlpull.v1.XmlPullParserException;
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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 ExtensionElementProvider} 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 extends ExtensionElementProvider<Item> {
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@Override
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public Item parse(XmlPullParser parser, int initialDepth)
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throws XmlPullParserException, IOException, ParseException {
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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 xmlns = parser.getNamespace();
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ItemNamespace itemNamespace = ItemNamespace.fromXmlns(xmlns);
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int tag = parser.next();
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if (tag == XmlPullParser.END_TAG) {
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return new Item(itemNamespace, id, node);
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}
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else {
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String payloadElemName = parser.getName();
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String payloadNS = parser.getNamespace();
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final ExtensionElementProvider<ExtensionElement> extensionProvider = ProviderManager.getExtensionProvider(payloadElemName, payloadNS);
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if (extensionProvider == null) {
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// TODO: Should we use StandardExtensionElement in this case? And probably remove SimplePayload all together.
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CharSequence payloadText = PacketParserUtils.parseElement(parser, true);
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return new PayloadItem<>(itemNamespace, id, node, new SimplePayload(payloadText.toString()));
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}
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else {
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return new PayloadItem<>(itemNamespace, id, node, extensionProvider.parse(parser));
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}
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}
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}
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}
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