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/**
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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*
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* Copyright 2013-2014 Oracle and/or its affiliates. All rights reserved.
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*
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* Oracle and Java are registered trademarks of Oracle and/or its affiliates.
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* Other names may be trademarks of their respective owners.
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*
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* The contents of this file are subject to the terms of either the GNU
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* General Public License Version 2 only ("GPL") or the Common
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* Development and Distribution License("CDDL") (collectively, the
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* "License"). You may not use this file except in compliance with the
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* License. You can obtain a copy of the License at
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* http://www.netbeans.org/cddl-gplv2.html
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* or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
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* specific language governing permissions and limitations under the
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* License. When distributing the software, include this License Header
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* Notice in each file and include the License file at
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* nbbuild/licenses/CDDL-GPL-2-CP. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the GPL Version 2 section of the License file that
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* accompanied this code. If applicable, add the following below the
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* License Header, with the fields enclosed by brackets [] replaced by
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* your own identifying information:
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* "Portions Copyrighted [year] [name of copyright owner]"
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*
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* Contributor(s):
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*
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* The Original Software is NetBeans. The Initial Developer of the Original
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* Software is Oracle. Portions Copyright 2013-2014 Oracle. All Rights Reserved.
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*
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* If you wish your version of this file to be governed by only the CDDL
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* or only the GPL Version 2, indicate your decision by adding
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* "[Contributor] elects to include this software in this distribution
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* under the [CDDL or GPL Version 2] license." If you do not indicate a
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* single choice of license, a recipient has the option to distribute
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* your version of this file under either the CDDL, the GPL Version 2 or
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* to extend the choice of license to its licensees as provided above.
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* However, if you add GPL Version 2 code and therefore, elected the GPL
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* Version 2 license, then the option applies only if the new code is
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* made subject to such option by the copyright holder.
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*/
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package org.netbeans.html.wstyrus;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.OutputStream;
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import java.io.PushbackInputStream;
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import java.io.Reader;
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import java.net.HttpURLConnection;
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import java.net.URL;
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import java.net.URLConnection;
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import java.util.ArrayList;
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import java.util.Iterator;
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import java.util.List;
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import java.util.concurrent.Executor;
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import java.util.concurrent.Executors;
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import java.util.concurrent.ThreadFactory;
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import java.util.logging.Logger;
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import net.java.html.js.JavaScriptBody;
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import org.apidesign.html.json.spi.JSONCall;
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import org.json.JSONArray;
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import org.json.JSONException;
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import org.json.JSONObject;
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import org.json.JSONTokener;
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/** This is an implementation package - just
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* include its JAR on classpath and use official {@link Context} API
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* to access the functionality.
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*
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* @author Jaroslav Tulach
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*/
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final class LoadJSON implements Runnable {
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private static final Logger LOG = Logger.getLogger(LoadJSON.class.getName());
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private static final Executor REQ = Executors.newCachedThreadPool(new ThreadFactory() {
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@Override
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public Thread newThread(Runnable runnable) {
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Thread thread = Executors.defaultThreadFactory().newThread(runnable);
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thread.setDaemon(true);
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return thread;
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}
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});
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private final JSONCall call;
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private final URL base;
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private LoadJSON(JSONCall call) {
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this.call = call;
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this.base = null;
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}
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public static void loadJSON(JSONCall call) {
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assert !"WebSocket".equals(call.getMethod());
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REQ.execute(new LoadJSON((call)));
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}
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@Override
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public void run() {
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final String url;
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Throwable error = null;
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Object json = null;
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if (call.isJSONP()) {
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url = call.composeURL("dummy");
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} else {
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url = call.composeURL(null);
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}
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try {
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final URL u = new URL(base, url.replace(" ", "%20"));
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URLConnection conn = u.openConnection();
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if (call.isDoOutput()) {
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conn.setDoOutput(true);
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}
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if (call.getMethod() != null && conn instanceof HttpURLConnection) {
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((HttpURLConnection) conn).setRequestMethod(call.getMethod());
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}
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if (call.isDoOutput()) {
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final OutputStream os = conn.getOutputStream();
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call.writeData(os);
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os.flush();
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}
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final PushbackInputStream is = new PushbackInputStream(
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conn.getInputStream(), 1
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);
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boolean[] arrayOrString = { false, false };
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detectJSONType(call.isJSONP(), is, arrayOrString);
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try {
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if (arrayOrString[1]) {
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throw new JSONException("");
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}
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JSONTokener tok = createTokener(is);
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Object obj;
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obj = arrayOrString[0] ? new JSONArray(tok) : new JSONObject(tok);
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json = convertToArray(obj);
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} catch (JSONException ex) {
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Reader r = new InputStreamReader(is, "UTF-8");
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StringBuilder sb = new StringBuilder();
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for (;;) {
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int ch = r.read();
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if (ch == -1) {
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break;
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}
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sb.append((char)ch);
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}
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json = sb.toString();
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}
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} catch (IOException ex) {
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error = ex;
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} finally {
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if (error != null) {
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call.notifyError(error);
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} else {
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call.notifySuccess(json);
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}
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}
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}
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private static void detectJSONType(boolean skipAnything, final PushbackInputStream is, boolean[] arrayOrString) throws IOException {
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for (;;) {
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int ch = is.read();
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if (ch == -1) {
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arrayOrString[1] = true;
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break;
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}
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if (Character.isWhitespace(ch)) {
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continue;
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}
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if (ch == '[') {
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is.unread(ch);
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arrayOrString[0] = true;
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break;
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}
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if (ch == '{') {
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is.unread(ch);
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break;
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}
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if (!skipAnything) {
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is.unread(ch);
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arrayOrString[1] = true;
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break;
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}
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}
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}
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private static JSONTokener createTokener(InputStream is) throws IOException {
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Reader r = new InputStreamReader(is, "UTF-8");
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try {
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return new JSONTokener(r);
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} catch (LinkageError ex) {
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// phones may carry outdated version of JSONTokener
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StringBuilder sb = new StringBuilder();
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for (;;) {
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int ch = r.read();
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if (ch == -1) {
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break;
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}
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sb.append((char)ch);
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}
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return new JSONTokener(sb.toString());
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}
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}
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static Object convertToArray(Object o) throws JSONException {
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if (o instanceof JSONArray) {
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JSONArray ja = (JSONArray)o;
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Object[] arr = new Object[ja.length()];
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for (int i = 0; i < arr.length; i++) {
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arr[i] = convertToArray(ja.get(i));
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}
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return arr;
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} else if (o instanceof JSONObject) {
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JSONObject obj = (JSONObject)o;
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Iterator it = obj.keys();
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List<Object> collect = new ArrayList<Object>();
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while (it.hasNext()) {
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String key = (String)it.next();
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final Object val = obj.get(key);
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final Object newVal = convertToArray(val);
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if (val != newVal) {
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collect.add(key);
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collect.add(newVal);
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}
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}
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int size = collect.size();
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for (int i = 0; i < size; i += 2) {
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obj.put((String) collect.get(i), collect.get(i + 1));
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}
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return obj;
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} else if (o == JSONObject.NULL) {
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return null;
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} else {
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return o;
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}
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}
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public static void extractJSON(Object jsonObject, String[] props, Object[] values) {
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if (jsonObject instanceof JSONObject) {
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JSONObject obj = (JSONObject)jsonObject;
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for (int i = 0; i < props.length; i++) {
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Object val = obj.opt(props[i]);
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if (val == JSONObject.NULL) {
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val = null;
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}
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values[i] = val;
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}
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return;
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}
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for (int i = 0; i < props.length; i++) {
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values[i] = getProperty(jsonObject, props[i]);
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}
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}
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@JavaScriptBody(args = {"object", "property"},
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body
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= "if (property === null) return object;\n"
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+ "if (object === null) return null;\n"
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+ "var p = object[property]; return p ? p : null;"
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)
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private static Object getProperty(Object object, String property) {
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return null;
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}
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jaroslav@60
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public static Object parse(InputStream is) throws IOException {
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jaroslav@60
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try {
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jtulach@745
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PushbackInputStream push = new PushbackInputStream(is, 1);
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jtulach@745
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boolean[] arrayOrString = { false, false };
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jtulach@745
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detectJSONType(false, push, arrayOrString);
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jtulach@745
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JSONTokener t = createTokener(push);
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jtulach@745
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Object obj = arrayOrString[0] ? new JSONArray(t) : new JSONObject(t);
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jtulach@745
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return convertToArray(obj);
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jaroslav@60
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} catch (JSONException ex) {
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jaroslav@60
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throw new IOException(ex);
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}
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}
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}
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