jaroslav@37: /**
jaroslav@358:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
jaroslav@37:  *
jaroslav@551:  * Copyright 2013-2014 Oracle and/or its affiliates. All rights reserved.
jaroslav@37:  *
jaroslav@358:  * Oracle and Java are registered trademarks of Oracle and/or its affiliates.
jaroslav@358:  * Other names may be trademarks of their respective owners.
jaroslav@37:  *
jaroslav@358:  * The contents of this file are subject to the terms of either the GNU
jaroslav@358:  * General Public License Version 2 only ("GPL") or the Common
jaroslav@358:  * Development and Distribution License("CDDL") (collectively, the
jaroslav@358:  * "License"). You may not use this file except in compliance with the
jaroslav@358:  * License. You can obtain a copy of the License at
jaroslav@358:  * http://www.netbeans.org/cddl-gplv2.html
jaroslav@358:  * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
jaroslav@358:  * specific language governing permissions and limitations under the
jaroslav@358:  * License.  When distributing the software, include this License Header
jaroslav@358:  * Notice in each file and include the License file at
jaroslav@358:  * nbbuild/licenses/CDDL-GPL-2-CP.  Oracle designates this
jaroslav@358:  * particular file as subject to the "Classpath" exception as provided
jaroslav@358:  * by Oracle in the GPL Version 2 section of the License file that
jaroslav@358:  * accompanied this code. If applicable, add the following below the
jaroslav@358:  * License Header, with the fields enclosed by brackets [] replaced by
jaroslav@358:  * your own identifying information:
jaroslav@358:  * "Portions Copyrighted [year] [name of copyright owner]"
jaroslav@358:  *
jaroslav@358:  * Contributor(s):
jaroslav@358:  *
jaroslav@358:  * The Original Software is NetBeans. The Initial Developer of the Original
jaroslav@551:  * Software is Oracle. Portions Copyright 2013-2014 Oracle. All Rights Reserved.
jaroslav@358:  *
jaroslav@358:  * If you wish your version of this file to be governed by only the CDDL
jaroslav@358:  * or only the GPL Version 2, indicate your decision by adding
jaroslav@358:  * "[Contributor] elects to include this software in this distribution
jaroslav@358:  * under the [CDDL or GPL Version 2] license." If you do not indicate a
jaroslav@358:  * single choice of license, a recipient has the option to distribute
jaroslav@358:  * your version of this file under either the CDDL, the GPL Version 2 or
jaroslav@358:  * to extend the choice of license to its licensees as provided above.
jaroslav@358:  * However, if you add GPL Version 2 code and therefore, elected the GPL
jaroslav@358:  * Version 2 license, then the option applies only if the new code is
jaroslav@358:  * made subject to such option by the copyright holder.
jaroslav@37:  */
jaroslav@446: package org.netbeans.html.wstyrus;
jaroslav@37: 
jaroslav@37: import java.io.IOException;
jaroslav@60: import java.io.InputStream;
jaroslav@37: import java.io.InputStreamReader;
jaroslav@75: import java.io.OutputStream;
jaroslav@37: import java.io.PushbackInputStream;
jaroslav@37: import java.io.Reader;
jaroslav@74: import java.net.HttpURLConnection;
jaroslav@37: import java.net.URL;
jaroslav@74: import java.net.URLConnection;
jtulach@760: import java.util.ArrayList;
jaroslav@37: import java.util.Iterator;
jtulach@760: import java.util.List;
jaroslav@37: import java.util.concurrent.Executor;
jaroslav@37: import java.util.concurrent.Executors;
jaroslav@158: import java.util.concurrent.ThreadFactory;
jaroslav@37: import java.util.logging.Logger;
jaroslav@131: import net.java.html.js.JavaScriptBody;
jaroslav@37: import org.json.JSONArray;
jaroslav@37: import org.json.JSONException;
jaroslav@37: import org.json.JSONObject;
jaroslav@37: import org.json.JSONTokener;
jtulach@940: import org.netbeans.html.json.spi.JSONCall;
jaroslav@37: 
jaroslav@54: /** This is an implementation package - just
jaroslav@54:  * include its JAR on classpath and use official {@link Context} API
jaroslav@54:  * to access the functionality.
jaroslav@37:  *
jtulach@790:  * @author Jaroslav Tulach
jaroslav@37:  */
jaroslav@37: final class LoadJSON implements Runnable {
jaroslav@446:     private static final Logger LOG = Logger.getLogger(LoadJSON.class.getName());
jaroslav@158:     private static final Executor REQ = Executors.newCachedThreadPool(new ThreadFactory() {
jaroslav@158:         @Override
jaroslav@158:         public Thread newThread(Runnable runnable) {
jaroslav@158:             Thread thread = Executors.defaultThreadFactory().newThread(runnable);
jaroslav@158:             thread.setDaemon(true);
jaroslav@158:             return thread;
jaroslav@158:         }
jaroslav@158:     });
jaroslav@37: 
jaroslav@37:     private final JSONCall call;
jaroslav@37:     private final URL base;
jaroslav@37: 
jaroslav@37: 
jaroslav@37:     private LoadJSON(JSONCall call) {
jaroslav@37:         this.call = call;
jaroslav@446:         this.base = null;
jaroslav@37:     }
jaroslav@37: 
jaroslav@37:     public static void loadJSON(JSONCall call) {
jaroslav@258:         assert !"WebSocket".equals(call.getMethod());
jaroslav@258:         REQ.execute(new LoadJSON((call)));
jaroslav@37:     }
jaroslav@37: 
jaroslav@37:     @Override
jaroslav@37:     public void run() {
jaroslav@37:         final String url;
jaroslav@446:         Throwable error = null;
jaroslav@446:         Object json = null;
jtulach@940: 
jaroslav@37:         if (call.isJSONP()) {
jaroslav@37:             url = call.composeURL("dummy");
jaroslav@37:         } else {
jaroslav@37:             url = call.composeURL(null);
jaroslav@37:         }
jaroslav@37:         try {
jaroslav@37:             final URL u = new URL(base, url.replace(" ", "%20"));
jaroslav@74:             URLConnection conn = u.openConnection();
jaroslav@527:             if (call.isDoOutput()) {
jaroslav@527:                 conn.setDoOutput(true);
jaroslav@527:             }
jtulach@940:             String h = call.getHeaders();
jtulach@940:             if (h != null) {
jtulach@940:                 int pos = 0;
jtulach@940:                 while (pos < h.length()) {
jtulach@940:                     int tagEnd = h.indexOf(':', pos);
jtulach@940:                     if (tagEnd == -1) {
jtulach@940:                         break;
jtulach@940:                     }
jtulach@940:                     int r = h.indexOf('\r', tagEnd);
jtulach@940:                     int n = h.indexOf('\n', tagEnd);
jtulach@940:                     if (r == -1) {
jtulach@940:                         r = h.length();
jtulach@940:                     }
jtulach@940:                     if (n == -1) {
jtulach@940:                         n = h.length();
jtulach@940:                     }
jtulach@940:                     String key = h.substring(pos, tagEnd).trim();
jtulach@940:                     String val = h.substring(tagEnd + 1, Math.min(r, n)).trim();
jtulach@940:                     conn.setRequestProperty(key, val);;
jtulach@940:                     pos = Math.max(r, n);
jtulach@940:                 }
jtulach@940:             }
jaroslav@527:             if (call.getMethod() != null && conn instanceof HttpURLConnection) {
jaroslav@527:                 ((HttpURLConnection) conn).setRequestMethod(call.getMethod());
jaroslav@527:             }
jaroslav@527:             if (call.isDoOutput()) {
jaroslav@527:                 final OutputStream os = conn.getOutputStream();
jaroslav@527:                 call.writeData(os);
jaroslav@527:                 os.flush();
jaroslav@74:             }
jaroslav@74:             final PushbackInputStream is = new PushbackInputStream(
jaroslav@74:                 conn.getInputStream(), 1
jaroslav@74:             );
jtulach@745:             boolean[] arrayOrString = { false, false };
jtulach@745:             detectJSONType(call.isJSONP(), is, arrayOrString);
jaroslav@73:             try {
jtulach@745:                 if (arrayOrString[1]) {
jaroslav@73:                     throw new JSONException("");
jaroslav@73:                 }
jaroslav@525:                 JSONTokener tok = createTokener(is);
jaroslav@73:                 Object obj;
jtulach@745:                 obj = arrayOrString[0] ? new JSONArray(tok) : new JSONObject(tok);
jaroslav@73:                 json = convertToArray(obj);
jaroslav@73:             } catch (JSONException ex) {
jaroslav@73:                 Reader r = new InputStreamReader(is, "UTF-8");
jaroslav@73:                 StringBuilder sb = new StringBuilder();
jaroslav@73:                 for (;;) {
jaroslav@73:                     int ch = r.read();
jaroslav@73:                     if (ch == -1) {
jaroslav@73:                         break;
jaroslav@73:                     }
jaroslav@73:                     sb.append((char)ch);
jaroslav@73:                 }
jaroslav@73:                 json = sb.toString();
jaroslav@73:             }
jaroslav@73:         } catch (IOException ex) {
jaroslav@37:             error = ex;
jaroslav@37:         } finally {
jaroslav@446:             if (error != null) {
jaroslav@446:                 call.notifyError(error);
jaroslav@446:             } else {
jaroslav@446:                 call.notifySuccess(json);
jaroslav@446:             }
jaroslav@37:         }
jaroslav@37:     }
jaroslav@37: 
jtulach@745:     private static void detectJSONType(boolean skipAnything, final PushbackInputStream is, boolean[] arrayOrString) throws IOException {
jtulach@745:         for (;;) {
jtulach@745:             int ch = is.read();
jtulach@745:             if (ch == -1) {
jtulach@745:                 arrayOrString[1] = true;
jtulach@745:                 break;
jtulach@745:             }
jtulach@745:             if (Character.isWhitespace(ch)) {
jtulach@745:                 continue;
jtulach@745:             }
jtulach@745: 
jtulach@745:             if (ch == '[') {
jtulach@745:                 is.unread(ch);
jtulach@745:                 arrayOrString[0] = true;
jtulach@745:                 break;
jtulach@745:             }
jtulach@745:             if (ch == '{') {
jtulach@745:                 is.unread(ch);
jtulach@745:                 break;
jtulach@745:             }
jtulach@745:             if (!skipAnything) {
jtulach@745:                 is.unread(ch);
jtulach@745:                 arrayOrString[1] = true;
jtulach@745:                 break;
jtulach@745:             }
jtulach@745:         }
jtulach@745:     }
jtulach@745: 
jaroslav@525:     private static JSONTokener createTokener(InputStream is) throws IOException {
jaroslav@525:         Reader r = new InputStreamReader(is, "UTF-8");
jaroslav@525:         try {
jaroslav@525:             return new JSONTokener(r);
jaroslav@525:         } catch (LinkageError ex) {
jaroslav@525:             // phones may carry outdated version of JSONTokener
jaroslav@525:             StringBuilder sb = new StringBuilder();
jaroslav@525:             for (;;) {
jaroslav@525:                 int ch = r.read();
jaroslav@525:                 if (ch == -1) {
jaroslav@525:                     break;
jaroslav@525:                 }
jaroslav@525:                 sb.append((char)ch);
jaroslav@525:             }
jaroslav@525:             return new JSONTokener(sb.toString());
jaroslav@525:         }
jaroslav@525:     }
jaroslav@525: 
jaroslav@247:     static Object convertToArray(Object o) throws JSONException {
jaroslav@37:         if (o instanceof JSONArray) {
jaroslav@37:             JSONArray ja = (JSONArray)o;
jaroslav@37:             Object[] arr = new Object[ja.length()];
jaroslav@37:             for (int i = 0; i < arr.length; i++) {
jaroslav@37:                 arr[i] = convertToArray(ja.get(i));
jaroslav@37:             }
jaroslav@37:             return arr;
jaroslav@37:         } else if (o instanceof JSONObject) {
jaroslav@37:             JSONObject obj = (JSONObject)o;
jaroslav@37:             Iterator it = obj.keys();
jtulach@760:             List<Object> collect = new ArrayList<Object>();
jaroslav@37:             while (it.hasNext()) {
jaroslav@37:                 String key = (String)it.next();
jtulach@760:                 final Object val = obj.get(key);
jtulach@760:                 final Object newVal = convertToArray(val);
jtulach@760:                 if (val != newVal) {
jtulach@760:                     collect.add(key);
jtulach@760:                     collect.add(newVal);
jtulach@760:                 }
jtulach@760:             }
jtulach@760:             int size = collect.size();
jtulach@760:             for (int i = 0; i < size; i += 2) {
jtulach@760:                 obj.put((String) collect.get(i), collect.get(i + 1));
jaroslav@37:             }
jaroslav@37:             return obj;
jtulach@750:         } else if (o == JSONObject.NULL) {
jtulach@750:             return null;
jaroslav@37:         } else {
jaroslav@37:             return o;
jaroslav@37:         }
jaroslav@37:     }
jtulach@940: 
jaroslav@37:     public static void extractJSON(Object jsonObject, String[] props, Object[] values) {
jaroslav@37:         if (jsonObject instanceof JSONObject) {
jaroslav@37:             JSONObject obj = (JSONObject)jsonObject;
jaroslav@37:             for (int i = 0; i < props.length; i++) {
jtulach@749:                 Object val = obj.opt(props[i]);
jtulach@749:                 if (val == JSONObject.NULL) {
jtulach@749:                     val = null;
jaroslav@37:                 }
jtulach@749:                 values[i] = val;
jaroslav@37:             }
jaroslav@446:             return;
jaroslav@37:         }
jaroslav@446:         for (int i = 0; i < props.length; i++) {
jaroslav@446:             values[i] = getProperty(jsonObject, props[i]);
jaroslav@37:         }
jaroslav@37:     }
jtulach@940: 
jaroslav@446:     @JavaScriptBody(args = {"object", "property"},
jaroslav@446:             body
jaroslav@446:             = "if (property === null) return object;\n"
jaroslav@446:             + "if (object === null) return null;\n"
jaroslav@446:             + "var p = object[property]; return p ? p : null;"
jaroslav@446:     )
jaroslav@446:     private static Object getProperty(Object object, String property) {
jaroslav@446:         return null;
jaroslav@446:     }
jtulach@940: 
jaroslav@60:     public static Object parse(InputStream is) throws IOException {
jaroslav@60:         try {
jtulach@745:             PushbackInputStream push = new PushbackInputStream(is, 1);
jtulach@745:             boolean[] arrayOrString = { false, false };
jtulach@745:             detectJSONType(false, push, arrayOrString);
jtulach@745:             JSONTokener t = createTokener(push);
jtulach@745:             Object obj = arrayOrString[0] ? new JSONArray(t) : new JSONObject(t);
jtulach@745:             return convertToArray(obj);
jaroslav@60:         } catch (JSONException ex) {
jaroslav@60:             throw new IOException(ex);
jaroslav@60:         }
jaroslav@60:     }
jaroslav@37: }