mirror of
https://codeberg.org/Mercury-IM/Smack
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7a3818783b
git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@11825 b35dd754-fafc-0310-a699-88a17e54d16e
877 lines
34 KiB
Java
877 lines
34 KiB
Java
/**
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* $RCSfile$
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* $Revision$
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* $Date$
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*
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* Copyright 2003-2007 Jive Software.
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*
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* All rights reserved. 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.smack.util;
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import org.jivesoftware.smack.Connection;
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import org.jivesoftware.smack.packet.*;
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import org.jivesoftware.smack.provider.IQProvider;
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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.sasl.SASLMechanism.Failure;
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import org.xmlpull.v1.XmlPullParser;
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import org.xmlpull.v1.XmlPullParserException;
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import java.beans.PropertyDescriptor;
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import java.io.ByteArrayInputStream;
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import java.io.IOException;
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import java.io.ObjectInputStream;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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/**
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* Utility class that helps to parse packets. Any parsing packets method that must be shared
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* between many clients must be placed in this utility class.
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*
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* @author Gaston Dombiak
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*/
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public class PacketParserUtils {
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/**
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* Namespace used to store packet properties.
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*/
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private static final String PROPERTIES_NAMESPACE =
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"http://www.jivesoftware.com/xmlns/xmpp/properties";
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/**
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* Parses a message packet.
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*
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* @param parser the XML parser, positioned at the start of a message packet.
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* @return a Message packet.
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* @throws Exception if an exception occurs while parsing the packet.
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*/
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public static Packet parseMessage(XmlPullParser parser) throws Exception {
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Message message = new Message();
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String id = parser.getAttributeValue("", "id");
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message.setPacketID(id == null ? Packet.ID_NOT_AVAILABLE : id);
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message.setTo(parser.getAttributeValue("", "to"));
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message.setFrom(parser.getAttributeValue("", "from"));
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message.setType(Message.Type.fromString(parser.getAttributeValue("", "type")));
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String language = getLanguageAttribute(parser);
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// determine message's default language
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String defaultLanguage = null;
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if (language != null && !"".equals(language.trim())) {
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message.setLanguage(language);
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defaultLanguage = language;
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}
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else {
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defaultLanguage = Packet.getDefaultLanguage();
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}
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// Parse sub-elements. We include extra logic to make sure the values
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// are only read once. This is because it's possible for the names to appear
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// in arbitrary sub-elements.
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boolean done = false;
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String thread = null;
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Map<String, Object> properties = null;
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while (!done) {
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int eventType = parser.next();
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if (eventType == XmlPullParser.START_TAG) {
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String elementName = parser.getName();
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String namespace = parser.getNamespace();
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if (elementName.equals("subject")) {
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String xmlLang = getLanguageAttribute(parser);
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if (xmlLang == null) {
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xmlLang = defaultLanguage;
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}
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String subject = parseContent(parser);
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if (message.getSubject(xmlLang) == null) {
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message.addSubject(xmlLang, subject);
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}
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}
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else if (elementName.equals("body")) {
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String xmlLang = getLanguageAttribute(parser);
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if (xmlLang == null) {
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xmlLang = defaultLanguage;
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}
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String body = parseContent(parser);
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if (message.getBody(xmlLang) == null) {
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message.addBody(xmlLang, body);
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}
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}
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else if (elementName.equals("thread")) {
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if (thread == null) {
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thread = parser.nextText();
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}
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}
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else if (elementName.equals("error")) {
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message.setError(parseError(parser));
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}
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else if (elementName.equals("properties") &&
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namespace.equals(PROPERTIES_NAMESPACE))
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{
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properties = parseProperties(parser);
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}
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// Otherwise, it must be a packet extension.
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else {
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message.addExtension(
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PacketParserUtils.parsePacketExtension(elementName, namespace, parser));
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}
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}
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else if (eventType == XmlPullParser.END_TAG) {
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if (parser.getName().equals("message")) {
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done = true;
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}
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}
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}
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message.setThread(thread);
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// Set packet properties.
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if (properties != null) {
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for (String name : properties.keySet()) {
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message.setProperty(name, properties.get(name));
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}
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}
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return message;
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}
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/**
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* Returns the content of a tag as string regardless of any tags included.
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*
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* @param parser the XML pull parser
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* @return the content of a tag as string
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* @throws XmlPullParserException if parser encounters invalid XML
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* @throws IOException if an IO error occurs
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*/
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private static String parseContent(XmlPullParser parser)
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throws XmlPullParserException, IOException {
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String content = "";
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int parserDepth = parser.getDepth();
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while (!(parser.next() == XmlPullParser.END_TAG && parser
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.getDepth() == parserDepth)) {
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content += parser.getText();
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}
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return content;
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}
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/**
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* Parses a presence packet.
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*
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* @param parser the XML parser, positioned at the start of a presence packet.
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* @return a Presence packet.
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* @throws Exception if an exception occurs while parsing the packet.
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*/
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public static Presence parsePresence(XmlPullParser parser) throws Exception {
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Presence.Type type = Presence.Type.available;
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String typeString = parser.getAttributeValue("", "type");
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if (typeString != null && !typeString.equals("")) {
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try {
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type = Presence.Type.valueOf(typeString);
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}
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catch (IllegalArgumentException iae) {
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System.err.println("Found invalid presence type " + typeString);
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}
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}
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Presence presence = new Presence(type);
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presence.setTo(parser.getAttributeValue("", "to"));
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presence.setFrom(parser.getAttributeValue("", "from"));
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String id = parser.getAttributeValue("", "id");
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presence.setPacketID(id == null ? Packet.ID_NOT_AVAILABLE : id);
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String language = getLanguageAttribute(parser);
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if (language != null && !"".equals(language.trim())) {
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presence.setLanguage(language);
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}
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presence.setPacketID(id == null ? Packet.ID_NOT_AVAILABLE : id);
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// Parse sub-elements
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boolean done = false;
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while (!done) {
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int eventType = parser.next();
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if (eventType == XmlPullParser.START_TAG) {
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String elementName = parser.getName();
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String namespace = parser.getNamespace();
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if (elementName.equals("status")) {
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presence.setStatus(parser.nextText());
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}
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else if (elementName.equals("priority")) {
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try {
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int priority = Integer.parseInt(parser.nextText());
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presence.setPriority(priority);
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}
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catch (NumberFormatException nfe) {
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// Ignore.
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}
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catch (IllegalArgumentException iae) {
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// Presence priority is out of range so assume priority to be zero
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presence.setPriority(0);
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}
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}
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else if (elementName.equals("show")) {
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String modeText = parser.nextText();
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try {
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presence.setMode(Presence.Mode.valueOf(modeText));
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}
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catch (IllegalArgumentException iae) {
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System.err.println("Found invalid presence mode " + modeText);
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}
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}
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else if (elementName.equals("error")) {
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presence.setError(parseError(parser));
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}
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else if (elementName.equals("properties") &&
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namespace.equals(PROPERTIES_NAMESPACE))
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{
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Map<String,Object> properties = parseProperties(parser);
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// Set packet properties.
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for (String name : properties.keySet()) {
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presence.setProperty(name, properties.get(name));
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}
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}
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// Otherwise, it must be a packet extension.
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else {
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presence.addExtension(
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PacketParserUtils.parsePacketExtension(elementName, namespace, parser));
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}
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}
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else if (eventType == XmlPullParser.END_TAG) {
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if (parser.getName().equals("presence")) {
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done = true;
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}
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}
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}
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return presence;
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}
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/**
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* Parses an IQ packet.
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*
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* @param parser the XML parser, positioned at the start of an IQ packet.
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* @return an IQ object.
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* @throws Exception if an exception occurs while parsing the packet.
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*/
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public static IQ parseIQ(XmlPullParser parser, Connection connection) throws Exception {
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IQ iqPacket = null;
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String id = parser.getAttributeValue("", "id");
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String to = parser.getAttributeValue("", "to");
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String from = parser.getAttributeValue("", "from");
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IQ.Type type = IQ.Type.fromString(parser.getAttributeValue("", "type"));
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XMPPError error = null;
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boolean done = false;
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while (!done) {
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int eventType = parser.next();
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if (eventType == XmlPullParser.START_TAG) {
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String elementName = parser.getName();
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String namespace = parser.getNamespace();
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if (elementName.equals("error")) {
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error = PacketParserUtils.parseError(parser);
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}
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else if (elementName.equals("query") && namespace.equals("jabber:iq:auth")) {
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iqPacket = parseAuthentication(parser);
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}
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else if (elementName.equals("query") && namespace.equals("jabber:iq:roster")) {
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iqPacket = parseRoster(parser);
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}
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else if (elementName.equals("query") && namespace.equals("jabber:iq:register")) {
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iqPacket = parseRegistration(parser);
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}
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else if (elementName.equals("bind") &&
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namespace.equals("urn:ietf:params:xml:ns:xmpp-bind")) {
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iqPacket = parseResourceBinding(parser);
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}
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// Otherwise, see if there is a registered provider for
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// this element name and namespace.
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else {
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Object provider = ProviderManager.getInstance().getIQProvider(elementName, namespace);
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if (provider != null) {
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if (provider instanceof IQProvider) {
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iqPacket = ((IQProvider)provider).parseIQ(parser);
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}
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else if (provider instanceof Class) {
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iqPacket = (IQ)PacketParserUtils.parseWithIntrospection(elementName,
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(Class)provider, parser);
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}
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}
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}
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}
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else if (eventType == XmlPullParser.END_TAG) {
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if (parser.getName().equals("iq")) {
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done = true;
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}
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}
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}
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// Decide what to do when an IQ packet was not understood
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if (iqPacket == null) {
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if (IQ.Type.GET == type || IQ.Type.SET == type ) {
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// If the IQ stanza is of type "get" or "set" containing a child element
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// qualified by a namespace it does not understand, then answer an IQ of
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// type "error" with code 501 ("feature-not-implemented")
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iqPacket = new IQ() {
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public String getChildElementXML() {
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return null;
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}
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};
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iqPacket.setPacketID(id);
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iqPacket.setTo(from);
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iqPacket.setFrom(to);
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iqPacket.setType(IQ.Type.ERROR);
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iqPacket.setError(new XMPPError(XMPPError.Condition.feature_not_implemented));
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connection.sendPacket(iqPacket);
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return null;
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}
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else {
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// If an IQ packet wasn't created above, create an empty IQ packet.
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iqPacket = new IQ() {
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public String getChildElementXML() {
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return null;
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}
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};
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}
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}
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// Set basic values on the iq packet.
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iqPacket.setPacketID(id);
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iqPacket.setTo(to);
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iqPacket.setFrom(from);
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iqPacket.setType(type);
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iqPacket.setError(error);
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return iqPacket;
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}
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private static Authentication parseAuthentication(XmlPullParser parser) throws Exception {
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Authentication authentication = new Authentication();
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boolean done = false;
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while (!done) {
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int eventType = parser.next();
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if (eventType == XmlPullParser.START_TAG) {
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if (parser.getName().equals("username")) {
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authentication.setUsername(parser.nextText());
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}
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else if (parser.getName().equals("password")) {
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authentication.setPassword(parser.nextText());
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}
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else if (parser.getName().equals("digest")) {
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authentication.setDigest(parser.nextText());
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}
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else if (parser.getName().equals("resource")) {
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authentication.setResource(parser.nextText());
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}
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}
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else if (eventType == XmlPullParser.END_TAG) {
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if (parser.getName().equals("query")) {
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done = true;
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}
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}
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}
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return authentication;
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}
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private static RosterPacket parseRoster(XmlPullParser parser) throws Exception {
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RosterPacket roster = new RosterPacket();
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boolean done = false;
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RosterPacket.Item item = null;
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while (!done) {
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int eventType = parser.next();
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if (eventType == XmlPullParser.START_TAG) {
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if (parser.getName().equals("item")) {
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String jid = parser.getAttributeValue("", "jid");
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String name = parser.getAttributeValue("", "name");
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// Create packet.
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item = new RosterPacket.Item(jid, name);
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// Set status.
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String ask = parser.getAttributeValue("", "ask");
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RosterPacket.ItemStatus status = RosterPacket.ItemStatus.fromString(ask);
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item.setItemStatus(status);
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// Set type.
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String subscription = parser.getAttributeValue("", "subscription");
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RosterPacket.ItemType type = RosterPacket.ItemType.valueOf(subscription != null ? subscription : "none");
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item.setItemType(type);
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}
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if (parser.getName().equals("group") && item!= null) {
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final String groupName = parser.nextText();
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if (groupName != null && groupName.trim().length() > 0) {
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item.addGroupName(groupName);
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}
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}
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}
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else if (eventType == XmlPullParser.END_TAG) {
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if (parser.getName().equals("item")) {
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roster.addRosterItem(item);
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}
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if (parser.getName().equals("query")) {
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done = true;
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}
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}
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}
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return roster;
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}
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private static Registration parseRegistration(XmlPullParser parser) throws Exception {
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Registration registration = new Registration();
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Map<String, String> fields = null;
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boolean done = false;
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while (!done) {
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int eventType = parser.next();
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if (eventType == XmlPullParser.START_TAG) {
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// Any element that's in the jabber:iq:register namespace,
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// attempt to parse it if it's in the form <name>value</name>.
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if (parser.getNamespace().equals("jabber:iq:register")) {
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String name = parser.getName();
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String value = "";
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if (fields == null) {
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fields = new HashMap<String, String>();
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}
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if (parser.next() == XmlPullParser.TEXT) {
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value = parser.getText();
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}
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// Ignore instructions, but anything else should be added to the map.
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if (!name.equals("instructions")) {
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fields.put(name, value);
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}
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else {
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registration.setInstructions(value);
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}
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}
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// Otherwise, it must be a packet extension.
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else {
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registration.addExtension(
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PacketParserUtils.parsePacketExtension(
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parser.getName(),
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parser.getNamespace(),
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parser));
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}
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}
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else if (eventType == XmlPullParser.END_TAG) {
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if (parser.getName().equals("query")) {
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done = true;
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}
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}
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}
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registration.setAttributes(fields);
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return registration;
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}
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private static Bind parseResourceBinding(XmlPullParser parser) throws IOException,
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XmlPullParserException {
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Bind bind = new Bind();
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boolean done = false;
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while (!done) {
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int eventType = parser.next();
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if (eventType == XmlPullParser.START_TAG) {
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if (parser.getName().equals("resource")) {
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bind.setResource(parser.nextText());
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}
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else if (parser.getName().equals("jid")) {
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bind.setJid(parser.nextText());
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}
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} else if (eventType == XmlPullParser.END_TAG) {
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if (parser.getName().equals("bind")) {
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done = true;
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}
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}
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}
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return bind;
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}
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/**
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* Parse the available SASL mechanisms reported from the server.
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*
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* @param parser the XML parser, positioned at the start of the mechanisms stanza.
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* @return a collection of Stings with the mechanisms included in the mechanisms stanza.
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* @throws Exception if an exception occurs while parsing the stanza.
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*/
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public static Collection<String> parseMechanisms(XmlPullParser parser) throws Exception {
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List<String> mechanisms = new ArrayList<String>();
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boolean done = false;
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while (!done) {
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int eventType = parser.next();
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if (eventType == XmlPullParser.START_TAG) {
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String elementName = parser.getName();
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if (elementName.equals("mechanism")) {
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mechanisms.add(parser.nextText());
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}
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}
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else if (eventType == XmlPullParser.END_TAG) {
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if (parser.getName().equals("mechanisms")) {
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done = true;
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}
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}
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}
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return mechanisms;
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}
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/**
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* Parse the available compression methods reported from the server.
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*
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* @param parser the XML parser, positioned at the start of the compression stanza.
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* @return a collection of Stings with the methods included in the compression stanza.
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* @throws Exception if an exception occurs while parsing the stanza.
|
|
*/
|
|
public static Collection<String> parseCompressionMethods(XmlPullParser parser)
|
|
throws IOException, XmlPullParserException {
|
|
List<String> methods = new ArrayList<String>();
|
|
boolean done = false;
|
|
while (!done) {
|
|
int eventType = parser.next();
|
|
|
|
if (eventType == XmlPullParser.START_TAG) {
|
|
String elementName = parser.getName();
|
|
if (elementName.equals("method")) {
|
|
methods.add(parser.nextText());
|
|
}
|
|
}
|
|
else if (eventType == XmlPullParser.END_TAG) {
|
|
if (parser.getName().equals("compression")) {
|
|
done = true;
|
|
}
|
|
}
|
|
}
|
|
return methods;
|
|
}
|
|
|
|
/**
|
|
* Parse a properties sub-packet. If any errors occur while de-serializing Java object
|
|
* properties, an exception will be printed and not thrown since a thrown
|
|
* exception will shut down the entire connection. ClassCastExceptions will occur
|
|
* when both the sender and receiver of the packet don't have identical versions
|
|
* of the same class.
|
|
*
|
|
* @param parser the XML parser, positioned at the start of a properties sub-packet.
|
|
* @return a map of the properties.
|
|
* @throws Exception if an error occurs while parsing the properties.
|
|
*/
|
|
public static Map<String, Object> parseProperties(XmlPullParser parser) throws Exception {
|
|
Map<String, Object> properties = new HashMap<String, Object>();
|
|
while (true) {
|
|
int eventType = parser.next();
|
|
if (eventType == XmlPullParser.START_TAG && parser.getName().equals("property")) {
|
|
// Parse a property
|
|
boolean done = false;
|
|
String name = null;
|
|
String type = null;
|
|
String valueText = null;
|
|
Object value = null;
|
|
while (!done) {
|
|
eventType = parser.next();
|
|
if (eventType == XmlPullParser.START_TAG) {
|
|
String elementName = parser.getName();
|
|
if (elementName.equals("name")) {
|
|
name = parser.nextText();
|
|
}
|
|
else if (elementName.equals("value")) {
|
|
type = parser.getAttributeValue("", "type");
|
|
valueText = parser.nextText();
|
|
}
|
|
}
|
|
else if (eventType == XmlPullParser.END_TAG) {
|
|
if (parser.getName().equals("property")) {
|
|
if ("integer".equals(type)) {
|
|
value = Integer.valueOf(valueText);
|
|
}
|
|
else if ("long".equals(type)) {
|
|
value = Long.valueOf(valueText);
|
|
}
|
|
else if ("float".equals(type)) {
|
|
value = Float.valueOf(valueText);
|
|
}
|
|
else if ("double".equals(type)) {
|
|
value = Double.valueOf(valueText);
|
|
}
|
|
else if ("boolean".equals(type)) {
|
|
value = Boolean.valueOf(valueText);
|
|
}
|
|
else if ("string".equals(type)) {
|
|
value = valueText;
|
|
}
|
|
else if ("java-object".equals(type)) {
|
|
try {
|
|
byte [] bytes = StringUtils.decodeBase64(valueText);
|
|
ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(bytes));
|
|
value = in.readObject();
|
|
}
|
|
catch (Exception e) {
|
|
e.printStackTrace();
|
|
}
|
|
}
|
|
if (name != null && value != null) {
|
|
properties.put(name, value);
|
|
}
|
|
done = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else if (eventType == XmlPullParser.END_TAG) {
|
|
if (parser.getName().equals("properties")) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return properties;
|
|
}
|
|
|
|
/**
|
|
* Parses SASL authentication error packets.
|
|
*
|
|
* @param parser the XML parser.
|
|
* @return a SASL Failure packet.
|
|
* @throws Exception if an exception occurs while parsing the packet.
|
|
*/
|
|
public static Failure parseSASLFailure(XmlPullParser parser) throws Exception {
|
|
String condition = null;
|
|
boolean done = false;
|
|
while (!done) {
|
|
int eventType = parser.next();
|
|
|
|
if (eventType == XmlPullParser.START_TAG) {
|
|
if (!parser.getName().equals("failure")) {
|
|
condition = parser.getName();
|
|
}
|
|
}
|
|
else if (eventType == XmlPullParser.END_TAG) {
|
|
if (parser.getName().equals("failure")) {
|
|
done = true;
|
|
}
|
|
}
|
|
}
|
|
return new Failure(condition);
|
|
}
|
|
|
|
/**
|
|
* Parses stream error packets.
|
|
*
|
|
* @param parser the XML parser.
|
|
* @return an stream error packet.
|
|
* @throws Exception if an exception occurs while parsing the packet.
|
|
*/
|
|
public static StreamError parseStreamError(XmlPullParser parser) throws IOException,
|
|
XmlPullParserException {
|
|
StreamError streamError = null;
|
|
boolean done = false;
|
|
while (!done) {
|
|
int eventType = parser.next();
|
|
|
|
if (eventType == XmlPullParser.START_TAG) {
|
|
streamError = new StreamError(parser.getName());
|
|
}
|
|
else if (eventType == XmlPullParser.END_TAG) {
|
|
if (parser.getName().equals("error")) {
|
|
done = true;
|
|
}
|
|
}
|
|
}
|
|
return streamError;
|
|
}
|
|
|
|
/**
|
|
* Parses error sub-packets.
|
|
*
|
|
* @param parser the XML parser.
|
|
* @return an error sub-packet.
|
|
* @throws Exception if an exception occurs while parsing the packet.
|
|
*/
|
|
public static XMPPError parseError(XmlPullParser parser) throws Exception {
|
|
final String errorNamespace = "urn:ietf:params:xml:ns:xmpp-stanzas";
|
|
String errorCode = "-1";
|
|
String type = null;
|
|
String message = null;
|
|
String condition = null;
|
|
List<PacketExtension> extensions = new ArrayList<PacketExtension>();
|
|
|
|
// Parse the error header
|
|
for (int i=0; i<parser.getAttributeCount(); i++) {
|
|
if (parser.getAttributeName(i).equals("code")) {
|
|
errorCode = parser.getAttributeValue("", "code");
|
|
}
|
|
if (parser.getAttributeName(i).equals("type")) {
|
|
type = parser.getAttributeValue("", "type");
|
|
}
|
|
}
|
|
boolean done = false;
|
|
// Parse the text and condition tags
|
|
while (!done) {
|
|
int eventType = parser.next();
|
|
if (eventType == XmlPullParser.START_TAG) {
|
|
if (parser.getName().equals("text")) {
|
|
message = parser.nextText();
|
|
}
|
|
else {
|
|
// Condition tag, it can be xmpp error or an application defined error.
|
|
String elementName = parser.getName();
|
|
String namespace = parser.getNamespace();
|
|
if (errorNamespace.equals(namespace)) {
|
|
condition = elementName;
|
|
}
|
|
else {
|
|
extensions.add(parsePacketExtension(elementName, namespace, parser));
|
|
}
|
|
}
|
|
}
|
|
else if (eventType == XmlPullParser.END_TAG) {
|
|
if (parser.getName().equals("error")) {
|
|
done = true;
|
|
}
|
|
}
|
|
}
|
|
// Parse the error type.
|
|
XMPPError.Type errorType = XMPPError.Type.CANCEL;
|
|
try {
|
|
if (type != null) {
|
|
errorType = XMPPError.Type.valueOf(type.toUpperCase());
|
|
}
|
|
}
|
|
catch (IllegalArgumentException iae) {
|
|
// Print stack trace. We shouldn't be getting an illegal error type.
|
|
iae.printStackTrace();
|
|
}
|
|
return new XMPPError(Integer.parseInt(errorCode), errorType, condition, message, extensions);
|
|
}
|
|
|
|
/**
|
|
* Parses a packet extension sub-packet.
|
|
*
|
|
* @param elementName the XML element name of the packet extension.
|
|
* @param namespace the XML namespace of the packet extension.
|
|
* @param parser the XML parser, positioned at the starting element of the extension.
|
|
* @return a PacketExtension.
|
|
* @throws Exception if a parsing error occurs.
|
|
*/
|
|
public static PacketExtension parsePacketExtension(String elementName, String namespace, XmlPullParser parser)
|
|
throws Exception
|
|
{
|
|
// See if a provider is registered to handle the extension.
|
|
Object provider = ProviderManager.getInstance().getExtensionProvider(elementName, namespace);
|
|
if (provider != null) {
|
|
if (provider instanceof PacketExtensionProvider) {
|
|
return ((PacketExtensionProvider)provider).parseExtension(parser);
|
|
}
|
|
else if (provider instanceof Class) {
|
|
return (PacketExtension)parseWithIntrospection(
|
|
elementName, (Class)provider, parser);
|
|
}
|
|
}
|
|
// No providers registered, so use a default extension.
|
|
DefaultPacketExtension extension = new DefaultPacketExtension(elementName, namespace);
|
|
boolean done = false;
|
|
while (!done) {
|
|
int eventType = parser.next();
|
|
if (eventType == XmlPullParser.START_TAG) {
|
|
String name = parser.getName();
|
|
// If an empty element, set the value with the empty string.
|
|
if (parser.isEmptyElementTag()) {
|
|
extension.setValue(name,"");
|
|
}
|
|
// Otherwise, get the the element text.
|
|
else {
|
|
eventType = parser.next();
|
|
if (eventType == XmlPullParser.TEXT) {
|
|
String value = parser.getText();
|
|
extension.setValue(name, value);
|
|
}
|
|
}
|
|
}
|
|
else if (eventType == XmlPullParser.END_TAG) {
|
|
if (parser.getName().equals(elementName)) {
|
|
done = true;
|
|
}
|
|
}
|
|
}
|
|
return extension;
|
|
}
|
|
|
|
private static String getLanguageAttribute(XmlPullParser parser) {
|
|
for (int i = 0; i < parser.getAttributeCount(); i++) {
|
|
String attributeName = parser.getAttributeName(i);
|
|
if ( "xml:lang".equals(attributeName) ||
|
|
("lang".equals(attributeName) &&
|
|
"xml".equals(parser.getAttributePrefix(i)))) {
|
|
return parser.getAttributeValue(i);
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
public static Object parseWithIntrospection(String elementName,
|
|
Class objectClass, XmlPullParser parser) throws Exception
|
|
{
|
|
boolean done = false;
|
|
Object object = objectClass.newInstance();
|
|
while (!done) {
|
|
int eventType = parser.next();
|
|
if (eventType == XmlPullParser.START_TAG) {
|
|
String name = parser.getName();
|
|
String stringValue = parser.nextText();
|
|
PropertyDescriptor descriptor = new PropertyDescriptor(name, objectClass);
|
|
// Load the class type of the property.
|
|
Class propertyType = descriptor.getPropertyType();
|
|
// Get the value of the property by converting it from a
|
|
// String to the correct object type.
|
|
Object value = decode(propertyType, stringValue);
|
|
// Set the value of the bean.
|
|
descriptor.getWriteMethod().invoke(object, value);
|
|
}
|
|
else if (eventType == XmlPullParser.END_TAG) {
|
|
if (parser.getName().equals(elementName)) {
|
|
done = true;
|
|
}
|
|
}
|
|
}
|
|
return object;
|
|
}
|
|
|
|
/**
|
|
* Decodes a String into an object of the specified type. If the object
|
|
* type is not supported, null will be returned.
|
|
*
|
|
* @param type the type of the property.
|
|
* @param value the encode String value to decode.
|
|
* @return the String value decoded into the specified type.
|
|
* @throws Exception If decoding failed due to an error.
|
|
*/
|
|
private static Object decode(Class type, String value) throws Exception {
|
|
if (type.getName().equals("java.lang.String")) {
|
|
return value;
|
|
}
|
|
if (type.getName().equals("boolean")) {
|
|
return Boolean.valueOf(value);
|
|
}
|
|
if (type.getName().equals("int")) {
|
|
return Integer.valueOf(value);
|
|
}
|
|
if (type.getName().equals("long")) {
|
|
return Long.valueOf(value);
|
|
}
|
|
if (type.getName().equals("float")) {
|
|
return Float.valueOf(value);
|
|
}
|
|
if (type.getName().equals("double")) {
|
|
return Double.valueOf(value);
|
|
}
|
|
if (type.getName().equals("java.lang.Class")) {
|
|
return Class.forName(value);
|
|
}
|
|
return null;
|
|
}
|
|
}
|