208 lines
8.3 KiB
Java
208 lines
8.3 KiB
Java
/**
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*
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* Copyright 2003-2007 Jive Software.
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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.xdata.provider;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.logging.Logger;
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import javax.xml.namespace.QName;
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import org.jivesoftware.smack.packet.XmlEnvironment;
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import org.jivesoftware.smack.parsing.SmackParsingException;
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import org.jivesoftware.smack.provider.ExtensionElementProvider;
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import org.jivesoftware.smack.roster.packet.RosterPacket;
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import org.jivesoftware.smack.roster.provider.RosterPacketProvider;
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import org.jivesoftware.smack.util.StringUtils;
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import org.jivesoftware.smack.xml.XmlPullParser;
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import org.jivesoftware.smack.xml.XmlPullParserException;
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import org.jivesoftware.smackx.xdata.FormField;
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import org.jivesoftware.smackx.xdata.FormFieldChildElement;
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import org.jivesoftware.smackx.xdata.packet.DataForm;
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import org.jivesoftware.smackx.xdatalayout.packet.DataLayout;
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import org.jivesoftware.smackx.xdatalayout.provider.DataLayoutProvider;
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/**
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* The DataFormProvider parses DataForm packets.
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*
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* @author Gaston Dombiak
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*/
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public class DataFormProvider extends ExtensionElementProvider<DataForm> {
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private static final Logger LOGGER = Logger.getLogger(DataFormProvider.class.getName());
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public static final DataFormProvider INSTANCE = new DataFormProvider();
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@Override
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public DataForm parse(XmlPullParser parser, int initialDepth, XmlEnvironment xmlEnvironment) throws XmlPullParserException, IOException, SmackParsingException {
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DataForm.Type dataFormType = DataForm.Type.fromString(parser.getAttributeValue("", "type"));
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DataForm dataForm = new DataForm(dataFormType);
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outerloop: while (true) {
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XmlPullParser.Event eventType = parser.next();
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switch (eventType) {
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case START_ELEMENT:
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String name = parser.getName();
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String namespace = parser.getNamespace();
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XmlEnvironment elementXmlEnvironment = XmlEnvironment.from(parser, xmlEnvironment);
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switch (name) {
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case "instructions":
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dataForm.addInstruction(parser.nextText());
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break;
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case "title":
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dataForm.setTitle(parser.nextText());
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break;
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case "field":
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FormField formField = parseField(parser, elementXmlEnvironment);
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dataForm.addField(formField);
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break;
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case "item":
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DataForm.Item item = parseItem(parser, elementXmlEnvironment);
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dataForm.addItem(item);
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break;
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case "reported":
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DataForm.ReportedData reported = parseReported(parser, elementXmlEnvironment);
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dataForm.setReportedData(reported);
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break;
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// See XEP-133 Example 32 for a corner case where the data form contains this extension.
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case RosterPacket.ELEMENT:
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if (namespace.equals(RosterPacket.NAMESPACE)) {
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dataForm.addExtensionElement(RosterPacketProvider.INSTANCE.parse(parser));
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}
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break;
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// See XEP-141 Data Forms Layout
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case DataLayout.ELEMENT:
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if (namespace.equals(DataLayout.NAMESPACE)) {
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dataForm.addExtensionElement(DataLayoutProvider.parse(parser));
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}
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break;
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}
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break;
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case END_ELEMENT:
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if (parser.getDepth() == initialDepth) {
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break outerloop;
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}
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break;
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default:
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// Catch all for incomplete switch (MissingCasesInEnumSwitch) statement.
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break;
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}
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}
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return dataForm;
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}
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private static FormField parseField(XmlPullParser parser, XmlEnvironment xmlEnvironment)
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throws XmlPullParserException, IOException, SmackParsingException {
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final int initialDepth = parser.getDepth();
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final String var = parser.getAttributeValue("", "var");
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final FormField.Type type = FormField.Type.fromString(parser.getAttributeValue("", "type"));
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final FormField.Builder builder = FormField.builder();
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builder.setType(type);
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if (type != FormField.Type.fixed) {
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builder.setVariable(var);
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}
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String label = parser.getAttributeValue("", "label");
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if (StringUtils.isNotEmpty(label)) {
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builder.setLabel(label);
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}
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outerloop: while (true) {
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XmlPullParser.Event eventType = parser.next();
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switch (eventType) {
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case START_ELEMENT:
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QName qname = parser.getQName();
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FormFieldChildElementProvider<?> provider = FormFieldChildElementProviderManager.getFormFieldChildElementProvider(
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qname);
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if (provider != null) {
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FormFieldChildElement formFieldChildElement = provider.parse(parser, XmlEnvironment.from(parser, xmlEnvironment));
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builder.addFormFieldChildElement(formFieldChildElement);
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} else {
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LOGGER.warning("Unknown form field child element " + qname + " ignored");
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}
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break;
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case END_ELEMENT:
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if (parser.getDepth() == initialDepth) {
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break outerloop;
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}
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break;
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default:
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// Catch all for incomplete switch (MissingCasesInEnumSwitch) statement.
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break;
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}
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}
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return builder.build();
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}
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private static DataForm.Item parseItem(XmlPullParser parser, XmlEnvironment xmlEnvironment)
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throws XmlPullParserException, IOException, SmackParsingException {
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final int initialDepth = parser.getDepth();
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List<FormField> fields = new ArrayList<>();
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outerloop: while (true) {
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XmlPullParser.TagEvent eventType = parser.nextTag();
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switch (eventType) {
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case START_ELEMENT:
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String name = parser.getName();
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switch (name) {
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case "field":
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FormField field = parseField(parser, XmlEnvironment.from(parser, xmlEnvironment));
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fields.add(field);
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break;
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}
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break;
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case END_ELEMENT:
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if (parser.getDepth() == initialDepth) {
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break outerloop;
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}
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break;
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}
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}
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return new DataForm.Item(fields);
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}
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private static DataForm.ReportedData parseReported(XmlPullParser parser, XmlEnvironment xmlEnvironment)
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throws XmlPullParserException, IOException, SmackParsingException {
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final int initialDepth = parser.getDepth();
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List<FormField> fields = new ArrayList<>();
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outerloop: while (true) {
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XmlPullParser.TagEvent eventType = parser.nextTag();
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switch (eventType) {
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case START_ELEMENT:
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String name = parser.getName();
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switch (name) {
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case "field":
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FormField field = parseField(parser, XmlEnvironment.from(parser, xmlEnvironment));
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fields.add(field);
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break;
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}
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break;
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case END_ELEMENT:
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if (parser.getDepth() == initialDepth) {
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break outerloop;
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}
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break;
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}
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}
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return new DataForm.ReportedData(fields);
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}
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}
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