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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.xhr4j;
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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.io.UnsupportedEncodingException;
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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.concurrent.Callable;
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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.netbeans.html.json.spi.JSONCall;
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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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thread.setName("xhr4j daemon");
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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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String h = call.getHeaders();
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if (h != null) {
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int pos = 0;
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while (pos < h.length()) {
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int tagEnd = h.indexOf(':', pos);
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if (tagEnd == -1) {
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break;
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}
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int r = h.indexOf('\r', tagEnd);
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int n = h.indexOf('\n', tagEnd);
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if (r == -1) {
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r = h.length();
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}
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if (n == -1) {
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n = h.length();
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}
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String key = h.substring(pos, tagEnd).trim();
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String val = h.substring(tagEnd + 1, Math.min(r, n)).trim();
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conn.setRequestProperty(key, val);;
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pos = Math.max(r, n);
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}
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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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String response = readStream(is);
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if (call.isJSONP()) {
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response = '(' + response;
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}
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json = new Result(response, arrayOrString[0], arrayOrString[1]);
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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 final class Result implements Callable<Object> {
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private final String response;
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private final boolean array;
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private final boolean plain;
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Result(String response, boolean array, boolean plain) {
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this.response = response;
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this.array = array;
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this.plain = plain;
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}
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@Override
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public Object call() throws Exception {
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if (plain) {
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return response;
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} else {
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if (array) {
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Object r = parse(response);
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Object[] arr = r instanceof Object[] ? (Object[])r : new Object[] { r };
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for (int i = 0; i < arr.length; i++) {
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arr[i] = new JSObjToStr(response, arr[i]);
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}
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return arr;
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} else {
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return new JSObjToStr(response, parse(response));
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}
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}
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}
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}
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private static final class JSObjToStr {
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final String str;
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final Object obj;
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public JSObjToStr(Object str, Object obj) {
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this.str = str == null ? "" : str.toString();
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this.obj = obj;
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}
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@Override
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public String toString() {
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return str;
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}
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}
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static String readStream(InputStream is) throws IOException, UnsupportedEncodingException {
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Reader r = new InputStreamReader(is, "UTF-8");
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StringBuilder sb = new StringBuilder();
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char[] arr = new char[4096];
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for (;;) {
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int len = r.read(arr);
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if (len == -1) {
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break;
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}
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sb.append(arr, 0, len);
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}
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return sb.toString();
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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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jtulach@745
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for (;;) {
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jtulach@745
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int ch = is.read();
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jtulach@745
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if (ch == -1) {
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jtulach@745
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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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jtulach@745
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if (ch == '[') {
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is.unread(ch);
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arrayOrString[0] = true;
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jtulach@745
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break;
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jtulach@745
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}
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jtulach@745
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if (ch == '{') {
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jtulach@745
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is.unread(ch);
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jtulach@745
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break;
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jtulach@745
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}
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jtulach@745
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if (!skipAnything) {
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jtulach@745
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is.unread(ch);
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jtulach@745
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arrayOrString[1] = true;
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jtulach@745
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break;
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jtulach@745
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}
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jtulach@745
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}
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jtulach@745
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}
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jtulach@745
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jtulach@1020
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@JavaScriptBody(args = {"object", "property"}, body =
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jtulach@1020
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"var ret;\n" +
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jtulach@1020
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"if (property === null) ret = object;\n" +
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jtulach@1020
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"else if (object === null) ret = null;\n" +
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jtulach@1020
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"else ret = object[property];\n" +
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jtulach@1020
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"return ret ? (typeof ko === 'undefined' ? ret : ko.utils.unwrapObservable(ret)) : null;"
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jaroslav@446
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)
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jaroslav@446
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private static Object getProperty(Object object, String property) {
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jaroslav@446
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return null;
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jaroslav@446
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}
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jtulach@940
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jtulach@1057
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@JavaScriptBody(args = {"s"}, body = "return eval('(' + s + ')');")
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jtulach@1057
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static Object parse(String s) {
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jtulach@1057
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throw new IllegalStateException("No parser context for " + s);
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jtulach@1057
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}
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jtulach@1057
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jtulach@1057
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static void extractJSON(Object js, String[] props, Object[] values) {
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jtulach@1057
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if (js instanceof JSObjToStr) {
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jtulach@1057
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js = ((JSObjToStr)js).obj;
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jtulach@1057
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}
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jtulach@1057
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for (int i = 0; i < props.length; i++) {
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jtulach@1057
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values[i] = getProperty(js, props[i]);
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jaroslav@60
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}
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jaroslav@60
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}
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jtulach@1057
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jaroslav@37
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}
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