processing/core/src/processing/data/JSONObject.java at master · dimr/processing · GitHub

Repository navigation

History

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

447

448

449

450

451

452

453

454

455

456

457

458

459

460

461

462

463

464

465

466

467

468

469

470

471

472

473

474

475

476

477

478

479

480

481

482

483

484

485

486

487

488

489

490

491

492

493

494

495

496

497

498

499

500

501

502

503

504

505

506

507

508

509

510

511

512

513

514

515

516

517

518

519

520

521

522

523

524

525

526

527

528

529

530

531

532

533

534

535

536

537

538

539

540

541

542

543

544

545

546

547

548

549

550

551

552

553

554

555

556

557

558

559

560

561

562

563

564

565

566

567

568

569

570

571

572

573

574

575

576

577

578

579

580

581

582

583

584

585

586

587

588

589

590

591

592

593

594

595

596

597

598

599

600

601

602

603

604

605

606

607

608

609

610

611

612

613

614

615

616

617

618

619

620

621

622

623

624

625

626

627

628

629

630

631

632

633

634

635

636

637

638

639

640

641

642

643

644

645

646

647

648

649

650

651

652

653

654

655

656

657

658

659

660

661

662

663

664

665

666

667

668

669

670

671

672

673

674

675

676

677

678

679

680

681

682

683

684

685

686

687

688

689

690

691

692

693

694

695

696

697

698

699

700

701

702

703

704

705

706

707

708

709

710

711

712

713

714

715

716

717

718

719

720

721

722

723

724

725

726

727

728

729

730

731

732

733

734

735

736

737

738

739

740

741

742

743

744

745

746

747

748

749

750

751

752

753

754

755

756

757

758

759

760

761

762

763

764

765

766

767

768

769

770

771

772

773

774

775

776

777

778

779

780

781

782

783

784

785

786

787

788

789

790

791

792

793

794

795

796

797

798

799

800

801

802

803

804

805

806

807

808

809

810

811

812

813

814

815

816

817

818

819

820

821

822

823

824

825

826

827

828

829

830

831

832

833

834

835

836

837

838

839

840

841

842

843

844

845

846

847

848

849

850

851

852

853

854

855

856

857

858

859

860

861

862

863

864

865

866

867

868

869

870

871

872

873

874

875

876

877

878

879

880

881

882

883

884

885

886

887

888

889

890

891

892

893

894

895

896

897

898

899

900

901

902

903

904

905

906

907

908

909

910

911

912

913

914

915

916

917

918

919

920

921

922

923

924

925

926

927

928

929

930

931

932

933

934

935

936

937

938

939

940

941

942

943

944

945

946

947

948

949

950

951

952

953

954

955

956

957

958

959

960

961

962

963

964

965

966

967

968

969

970

971

972

973

974

975

976

977

978

979

980

981

982

983

984

985

986

987

988

989

990

991

992

993

994

995

996

997

998

999

1000

package processing.data;

// This code has been modified heavily to more closely match the rest of the

// Processing API. In the spirit of the rest of the project, where we try to

// keep the API as simple as possible, we have erred on the side of being

// conservative in choosing which functions to include, since we haven't yet

// decided what's truly necessary. Power users looking for a full-featured

// version can use the original version from json.org, or one of the many

// other APIs that are available. As with all Processing API, if there's a

// function that should be added, please let use know, and have others vote:

// http://code.google.com/p/processing/issues/list

Permission is hereby granted, free of charge, to any person obtaining a copy

of this software and associated documentation files (the "Software"), to deal

in the Software without restriction, including without limitation the rights

to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

copies of the Software, and to permit persons to whom the Software is

furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all

copies or substantial portions of the Software.

The Software shall be used for Good, not Evil.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

SOFTWARE.

import java.io.File;

import java.io.IOException;

import java.io.PrintWriter;

import java.io.Reader;

import java.io.StringWriter;

import java.io.Writer;

import java.lang.reflect.Method;

import java.lang.reflect.Modifier;

import java.util.Collection;

import java.util.HashMap;

import java.util.Iterator;

import java.util.Map;

import java.util.Set;

import processing.core.PApplet;

/**

* A JSONObject is an unordered collection of name/value pairs. Its external

* form is a string wrapped in curly braces with colons between the names and

* values, and commas between the values and names. The internal form is an

* object having <code>get</code> and <code>opt</code> methods for accessing the

* values by name, and <code>put</code> methods for adding or replacing values

* by name. The values can be any of these types: <code>Boolean</code>,

* <code>JSONArray</code>, <code>JSONObject</code>, <code>Number</code>,

* <code>String</code>, or the <code>JSONObject.NULL</code> object. A JSONObject

* constructor can be used to convert an external form JSON text into an

* internal form whose values can be retrieved with the <code>get</code> and

* <code>opt</code> methods, or to convert values into a JSON text using the

* <code>put</code> and <code>toString</code> methods. A <code>get</code> method

* returns a value if one can be found, and throws an exception if one cannot be

* found. An <code>opt</code> method returns a default value instead of throwing

* an exception, and so is useful for obtaining optional values.

*

* The generic <code>get()</code> and <code>opt()</code> methods return an

* object, which you can cast or query for type. There are also typed

* <code>get</code> and <code>opt</code> methods that do type checking and type

* coercion for you. The opt methods differ from the get methods in that they do

* not throw. Instead, they return a specified value, such as null.

*

* The <code>put</code> methods add or replace values in an object. For example,

* <pre>

* myString = new JSONObject().put("JSON", "Hello, World!").toString();

* </pre>

* produces the string <code>{"JSON": "Hello, World"}</code>.

*

* The texts produced by the <code>toString</code> methods strictly conform to

* the JSON syntax rules. The constructors are more forgiving in the texts they

* will accept:

* <ul>

* <li>An extra <code>,</code> (comma) may appear just

* before the closing brace.</li>

* <li>Strings may be quoted with <code>'</code> (single

* quote).</li>

* <li>Strings do not need to be quoted at all if they do not begin with a quote

* or single quote, and if they do not contain leading or trailing spaces, and

* if they do not contain any of these characters:

* <code>{ } [ ] / \ : , = ; #</code> and if they do not look like numbers and

* if they are not the reserved words <code>true</code>, <code>false</code>, or

* <code>null</code>.</li>

* <li>Keys can be followed by <code>=</code> or {@code =>} as well as by

* <code>:</code>.</li>

* <li>Values can be followed by <code>;</code> (semicolon) as

* well as by <code>,</code> (comma).</li>

* </ul>

* @author JSON.org

* @version 2012-12-01

* @webref data:composite

* @see JSONArray

* @see PApplet#loadJSONObject(String)

* @see PApplet#loadJSONArray(String)

* @see PApplet#saveJSONObject(JSONObject, String)

* @see PApplet#saveJSONArray(JSONArray, String)

public class JSONObject {

/**

* The maximum number of keys in the key pool.

private static final int keyPoolSize = 100;

/**

* Key pooling is like string interning, but without permanently tying up

* memory. To help conserve memory, storage of duplicated key strings in

* JSONObjects will be avoided by using a key pool to manage unique key

* string objects. This is used by JSONObject.put(string, object).

private static HashMap<String, Object> keyPool =

new HashMap<String, Object>(keyPoolSize);

// . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

/**

* JSONObject.NULL is equivalent to the value that JavaScript calls null,

* whilst Java's null is equivalent to the value that JavaScript calls

* undefined.

private static final class Null {

/**

* There is only intended to be a single instance of the NULL object,

* so the clone method returns itself.

* @return NULL.

@Override

protected final Object clone() {

return this;

}

/**

* A Null object is equal to the null value and to itself.

* @param object An object to test for nullness.

* @return true if the object parameter is the JSONObject.NULL object

* or null.

@Override

public boolean equals(Object object) {

return object == null || object == this;

}

/**

* Get the "null" string value.

* @return The string "null".

@Override

public String toString() {

return "null";

}

@Override

public int hashCode() {

// TODO Auto-generated method stub

return super.hashCode();

}

// . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

/**

* The map where the JSONObject's properties are kept.

// private final Map map;

private final HashMap<String, Object> map;

/**

* It is sometimes more convenient and less ambiguous to have a

* <code>NULL</code> object than to use Java's <code>null</code> value.

* <code>JSONObject.NULL.equals(null)</code> returns <code>true</code>.

* <code>JSONObject.NULL.toString()</code> returns <code>"null"</code>.

public static final Object NULL = new Null();

/**

* Construct an empty JSONObject.

* @nowebref

public JSONObject() {

this.map = new HashMap<String, Object>();

}

// /**

// * Construct a JSONObject from a subset of another JSONObject.

// * An array of strings is used to identify the keys that should be copied.

// * Missing keys are ignored.

// * @param jo A JSONObject.

// * @param names An array of strings.

// */

// public JSONObject(JSONObject jo, String[] names) {

// this();

// for (int i = 0; i < names.length; i += 1) {

// try {

// this.putOnce(names[i], jo.opt(names[i]));

// } catch (Exception ignore) {

// }

/**

* @nowebref

public JSONObject(Reader reader) {

this(new JSONTokener(reader));

}

/**

* Construct a JSONObject from a JSONTokener.

* @param x A JSONTokener object containing the source string.

* @throws RuntimeException If there is a syntax error in the source string

* or a duplicated key.

protected JSONObject(JSONTokener x) {

this();

char c;

String key;

if (x.nextClean() != '{') {

throw new RuntimeException("A JSONObject text must begin with '{'");

}

for (;;) {

c = x.nextClean();

switch (c) {

case 0:

throw new RuntimeException("A JSONObject text must end with '}'");

case '}':

return;

default:

x.back();

key = x.nextValue().toString();

}

// The key is followed by ':'. We will also tolerate '=' or '=>'.

c = x.nextClean();

if (c == '=') {

if (x.next() != '>') {

x.back();

}

} else if (c != ':') {

throw new RuntimeException("Expected a ':' after a key");

}

this.putOnce(key, x.nextValue());

// Pairs are separated by ','. We will also tolerate ';'.

switch (x.nextClean()) {

case ';':

case ',':

if (x.nextClean() == '}') {

return;

}

x.back();

break;

case '}':

return;

default:

throw new RuntimeException("Expected a ',' or '}'");

}

/**

* Construct a JSONObject from a Map.

* @param map A map object that can be used to initialize the contents of

* the JSONObject.

protected JSONObject(HashMap<String, Object> map) {

this.map = new HashMap<String, Object>();

if (map != null) {

Iterator i = map.entrySet().iterator();

while (i.hasNext()) {

Map.Entry e = (Map.Entry) i.next();

Object value = e.getValue();

if (value != null) {

map.put((String) e.getKey(), wrap(value));

}

/**

* @nowebref

public JSONObject(IntDict dict) {

map = new HashMap<String, Object>();

for (int i = 0; i < dict.size(); i++) {

setInt(dict.key(i), dict.value(i));

}

/**

* @nowebref

public JSONObject(FloatDict dict) {

map = new HashMap<String, Object>();

for (int i = 0; i < dict.size(); i++) {

setFloat(dict.key(i), dict.value(i));

}

/**

* @nowebref

public JSONObject(StringDict dict) {

map = new HashMap<String, Object>();

for (int i = 0; i < dict.size(); i++) {

setString(dict.key(i), dict.value(i));

}

/**

* Construct a JSONObject from an Object using bean getters.

* It reflects on all of the public methods of the object.

* For each of the methods with no parameters and a name starting

* with <code>"get"</code> or <code>"is"</code> followed by an uppercase letter,

* the method is invoked, and a key and the value returned from the getter method

* are put into the new JSONObject.

* The key is formed by removing the <code>"get"</code> or <code>"is"</code> prefix.

* If the second remaining character is not upper case, then the first

* character is converted to lower case.

* For example, if an object has a method named <code>"getName"</code>, and

* if the result of calling <code>object.getName()</code> is <code>"Larry Fine"</code>,

* then the JSONObject will contain <code>"name": "Larry Fine"</code>.

* @param bean An object that has getter methods that should be used

* to make a JSONObject.

protected JSONObject(Object bean) {

this();

this.populateMap(bean);

}

// holding off on this method until we decide on how to handle reflection

// /**

// * Construct a JSONObject from an Object, using reflection to find the

// * public members. The resulting JSONObject's keys will be the strings

// * from the names array, and the values will be the field values associated

// * with those keys in the object. If a key is not found or not visible,

// * then it will not be copied into the new JSONObject.

// * @param object An object that has fields that should be used to make a

// * JSONObject.

// * @param names An array of strings, the names of the fields to be obtained

// * from the object.

// */

// public JSONObject(Object object, String names[]) {

// this();

// Class c = object.getClass();

// for (int i = 0; i < names.length; i += 1) {

// String name = names[i];

// try {

// this.putOpt(name, c.getField(name).get(object));

// } catch (Exception ignore) {

// }

/**

* Construct a JSONObject from a source JSON text string.

* This is the most commonly used JSONObject constructor.

* @param source A string beginning

* with <code>{</code> (left brace) and ending

* with <code>}</code> (right brace).

* @exception RuntimeException If there is a syntax error in the source

* string or a duplicated key.

static public JSONObject parse(String source) {

return new JSONObject(new JSONTokener(source));

}

// /**

// * Construct a JSONObject from a ResourceBundle.

// * @param baseName The ResourceBundle base name.

// * @param locale The Locale to load the ResourceBundle for.

// * @throws JSONException If any JSONExceptions are detected.

// */

// public JSON(String baseName, Locale locale) {

// this();

// ResourceBundle bundle = ResourceBundle.getBundle(baseName, locale,

// Thread.currentThread().getContextClassLoader());

// // Iterate through the keys in the bundle.

// Enumeration keys = bundle.getKeys();

// while (keys.hasMoreElements()) {

// Object key = keys.nextElement();

// if (key instanceof String) {

// // Go through the path, ensuring that there is a nested JSONObject for each

// // segment except the last. Add the value using the last segment's name into

// // the deepest nested JSONObject.

// String[] path = ((String)key).split("\\.");

// int last = path.length - 1;

// JSON target = this;

// for (int i = 0; i < last; i += 1) {

// String segment = path[i];

// JSON nextTarget = target.optJSONObject(segment);

// if (nextTarget == null) {

// nextTarget = new JSON();

// target.put(segment, nextTarget);

// }

// target = nextTarget;

// }

// target.put(path[last], bundle.getString((String)key));

// }

// /**

// * Accumulate values under a key. It is similar to the put method except

// * that if there is already an object stored under the key then a

// * JSONArray is stored under the key to hold all of the accumulated values.

// * If there is already a JSONArray, then the new value is appended to it.

// * In contrast, the put method replaces the previous value.

// *

// * If only one value is accumulated that is not a JSONArray, then the

// * result will be the same as using put. But if multiple values are

// * accumulated, then the result will be like append.

// * @param key A key string.

// * @param value An object to be accumulated under the key.

// * @return this.

// * @throws JSONException If the value is an invalid number

// * or if the key is null.

// */

// public JSONObject accumulate(

// String key,

// Object value

// ) throws JSONException {

// testValidity(value);

// Object object = this.opt(key);

// if (object == null) {

// this.put(key, value instanceof JSONArray

// ? new JSONArray().put(value)

// : value);

// } else if (object instanceof JSONArray) {

// ((JSONArray)object).put(value);

// } else {

// this.put(key, new JSONArray().put(object).put(value));

// }

// return this;

// }

// /**

// * Append values to the array under a key. If the key does not exist in the

// * JSONObject, then the key is put in the JSONObject with its value being a

// * JSONArray containing the value parameter. If the key was already

// * associated with a JSONArray, then the value parameter is appended to it.

// * @param key A key string.

// * @param value An object to be accumulated under the key.

// * @return this.

// * @throws JSONException If the key is null or if the current value

// * associated with the key is not a JSONArray.

// */

// public JSONObject append(String key, Object value) throws JSONException {

// testValidity(value);

// Object object = this.opt(key);

// if (object == null) {

// this.put(key, new JSONArray().put(value));

// } else if (object instanceof JSONArray) {

// this.put(key, ((JSONArray)object).put(value));

// } else {

// throw new JSONException("JSONObject[" + key +

// "] is not a JSONArray.");

// }

// return this;

// }

/**

* Produce a string from a double. The string "null" will be returned if

* the number is not finite.

* @param d A double.

* @return A String.

static protected String doubleToString(double d) {

if (Double.isInfinite(d) || Double.isNaN(d)) {

return "null";

}

// Shave off trailing zeros and decimal point, if possible.

String string = Double.toString(d);

if (string.indexOf('.') > 0 && string.indexOf('e') < 0 &&

string.indexOf('E') < 0) {

while (string.endsWith("0")) {

string = string.substring(0, string.length() - 1);

}

if (string.endsWith(".")) {

string = string.substring(0, string.length() - 1);

}

return string;

}

/**

* Get the value object associated with a key.

* @param key A key string.

* @return The object associated with the key.

* @throws RuntimeException if the key is not found.

public Object get(String key) {

if (key == null) {

throw new RuntimeException("JSONObject.get(null) called");

}

Object object = this.opt(key);

if (object == null) {

// Adding for rev 0257 in line with other p5 api

return null;

}

if (object == null) {

throw new RuntimeException("JSONObject[" + quote(key) + "] not found");

}

return object;

}

/**

* Gets the String associated with a key

* @webref jsonobject:method

* @brief Gets the string value associated with a key

* @param key a key string

* @return A string which is the value.

* @throws RuntimeException if there is no string value for the key.

* @see JSONObject#getInt(String)

* @see JSONObject#getFloat(String)

* @see JSONObject#getBoolean(String)

public String getString(String key) {

Object object = this.get(key);

if (object == null) {

// Adding for rev 0257 in line with other p5 api

return null;

}

if (object instanceof String) {

return (String)object;

}

throw new RuntimeException("JSONObject[" + quote(key) + "] is not a string");

}

/**

* Get an optional string associated with a key.

* It returns the defaultValue if there is no such key.

* @param key A key string.

* @param defaultValue The default.

* @return A string which is the value.

public String getString(String key, String defaultValue) {

Object object = this.opt(key);

return NULL.equals(object) ? defaultValue : object.toString();

}

/**

* Gets the int value associated with a key

* @webref jsonobject:method

* @brief Gets the int value associated with a key

* @param key A key string.

* @return The integer value.

* @throws RuntimeException if the key is not found or if the value cannot

* be converted to an integer.

* @see JSONObject#getFloat(String)

* @see JSONObject#getString(String)

* @see JSONObject#getBoolean(String)

public int getInt(String key) {

Object object = this.get(key);

if (object == null) {

throw new RuntimeException("JSONObject[" + quote(key) + "] not found");

}

try {

return object instanceof Number ?

((Number)object).intValue() : Integer.parseInt((String)object);

} catch (Exception e) {

throw new RuntimeException("JSONObject[" + quote(key) + "] is not an int.");

}

/**

* Get an optional int value associated with a key,

* or the default if there is no such key or if the value is not a number.

* If the value is a string, an attempt will be made to evaluate it as

* a number.

* @param key A key string.

* @param defaultValue The default.

* @return An object which is the value.

public int getInt(String key, int defaultValue) {

try {

return this.getInt(key);

} catch (Exception e) {

return defaultValue;

}

/**

* Get the long value associated with a key.

* @param key A key string.

* @return The long value.

* @throws RuntimeException if the key is not found or if the value cannot

* be converted to a long.

public long getLong(String key) {

Object object = this.get(key);

try {

return object instanceof Number

? ((Number)object).longValue()

: Long.parseLong((String)object);

} catch (Exception e) {

throw new RuntimeException("JSONObject[" + quote(key) + "] is not a long.", e);

}

/**

* Get an optional long value associated with a key,

* or the default if there is no such key or if the value is not a number.

* If the value is a string, an attempt will be made to evaluate it as

* a number.

* @param key A key string.

* @param defaultValue The default.

* @return An object which is the value.

public long getLong(String key, long defaultValue) {

try {

return this.getLong(key);

} catch (Exception e) {

return defaultValue;

}

/**

* @webref jsonobject:method

* @brief Gets the float value associated with a key

* @param key a key string

* @see JSONObject#getInt(String)

* @see JSONObject#getString(String)

* @see JSONObject#getBoolean(String)

public float getFloat(String key) {

return (float) getDouble(key);

}

public float getFloat(String key, float defaultValue) {

try {

return getFloat(key);

} catch (Exception e) {

return defaultValue;

}

/**

* Get the double value associated with a key.

* @param key A key string.

* @return The numeric value.

* @throws RuntimeException if the key is not found or

* if the value is not a Number object and cannot be converted to a number.

public double getDouble(String key) {

Object object = this.get(key);

try {

return object instanceof Number

? ((Number)object).doubleValue()

: Double.parseDouble((String)object);

} catch (Exception e) {

throw new RuntimeException("JSONObject[" + quote(key) + "] is not a number.");

}

/**

* Get an optional double associated with a key, or the

* defaultValue if there is no such key or if its value is not a number.

* If the value is a string, an attempt will be made to evaluate it as

* a number.

* @param key A key string.

* @param defaultValue The default.

* @return An object which is the value.

public double getDouble(String key, double defaultValue) {

try {

return this.getDouble(key);

} catch (Exception e) {

return defaultValue;

}

/**

* Get the boolean value associated with a key.

* @webref jsonobject:method

* @brief Gets the boolean value associated with a key

* @param key a key string

* @return The truth.

* @throws RuntimeException if the value is not a Boolean or the String "true" or "false".

* @see JSONObject#getInt(String)

* @see JSONObject#getFloat(String)

* @see JSONObject#getString(String)

public boolean getBoolean(String key) {

Object object = this.get(key);

if (object.equals(Boolean.FALSE) ||

(object instanceof String &&

((String)object).equalsIgnoreCase("false"))) {

return false;

} else if (object.equals(Boolean.TRUE) ||

(object instanceof String &&

((String)object).equalsIgnoreCase("true"))) {

return true;

}

throw new RuntimeException("JSONObject[" + quote(key) + "] is not a Boolean.");

}

/**

* Get an optional boolean associated with a key.

* It returns the defaultValue if there is no such key, or if it is not

* a Boolean or the String "true" or "false" (case insensitive).

* @param key A key string.

* @param defaultValue The default.

* @return The truth.

public boolean getBoolean(String key, boolean defaultValue) {

try {

return this.getBoolean(key);

} catch (Exception e) {

return defaultValue;

}

/**

* Get the JSONArray value associated with a key.

* @webref jsonobject:method

* @brief Gets the JSONArray value associated with a key

* @param key a key string

* @return A JSONArray which is the value, or null if not present

* @throws RuntimeException if the value is not a JSONArray.

* @see JSONObject#getJSONObject(String)

* @see JSONObject#setJSONObject(String, JSONObject)

* @see JSONObject#setJSONArray(String, JSONArray)

public JSONArray getJSONArray(String key) {

Object object = this.get(key);

if (object == null) {

return null;

}

if (object instanceof JSONArray) {

return (JSONArray)object;

}

throw new RuntimeException("JSONObject[" + quote(key) + "] is not a JSONArray.");

}

/**

* Get the JSONObject value associated with a key.

* @webref jsonobject:method

* @brief Gets the JSONObject value associated with a key

* @param key a key string

* @return A JSONObject which is the value or null if not available.

* @throws RuntimeException if the value is not a JSONObject.

* @see JSONObject#getJSONArray(String)

* @see JSONObject#setJSONObject(String, JSONObject)

* @see JSONObject#setJSONArray(String, JSONArray)

public JSONObject getJSONObject(String key) {

Object object = this.get(key);

if (object == null) {

return null;

}

if (object instanceof JSONObject) {

return (JSONObject)object;

}

throw new RuntimeException("JSONObject[" + quote(key) + "] is not a JSONObject.");

}

// /**

// * Get an array of field names from a JSONObject.

// *

// * @return An array of field names, or null if there are no names.

// */

// public static String[] getNames(JSONObject jo) {

// int length = jo.length();

// if (length == 0) {

// return null;

// }

// Iterator iterator = jo.keys();

// String[] names = new String[length];

// int i = 0;

// while (iterator.hasNext()) {

// names[i] = (String)iterator.next();

// i += 1;

// }

// return names;

// }

// /**

// * Get an array of field names from an Object.

// *

// * @return An array of field names, or null if there are no names.

// */

// public static String[] getNames(Object object) {

// if (object == null) {

// return null;

// }

// Class klass = object.getClass();

// Field[] fields = klass.getFields();

// int length = fields.length;

// if (length == 0) {

// return null;

// }

// String[] names = new String[length];

// for (int i = 0; i < length; i += 1) {

// names[i] = fields[i].getName();

// }

// return names;

// }

/**

* Determine if the JSONObject contains a specific key.

* @param key A key string.

* @return true if the key exists in the JSONObject.

public boolean hasKey(String key) {

return map.containsKey(key);

}

// /**

// * Increment a property of a JSONObject. If there is no such property,

// * create one with a value of 1. If there is such a property, and if

// * it is an Integer, Long, Double, or Float, then add one to it.

// * @param key A key string.

// * @return this.

// * @throws JSONException If there is already a property with this name

// * that is not an Integer, Long, Double, or Float.

// */

// public JSON increment(String key) {

// Object value = this.opt(key);

// if (value == null) {

// this.put(key, 1);

// } else if (value instanceof Integer) {

// this.put(key, ((Integer)value).intValue() + 1);

// } else if (value instanceof Long) {

// this.put(key, ((Long)value).longValue() + 1);

// } else if (value instanceof Double) {

// this.put(key, ((Double)value).doubleValue() + 1);

// } else if (value instanceof Float) {

// this.put(key, ((Float)value).floatValue() + 1);

// } else {

// throw new RuntimeException("Unable to increment [" + quote(key) + "].");

// }

// return this;

// }

/**

* Determine if the value associated with the key is null or if there is

* no value.

* @webref

* @param key A key string.

* @return true if there is no value associated with the key or if

* the value is the JSONObject.NULL object.

public boolean isNull(String key) {

return JSONObject.NULL.equals(this.opt(key));

}

/**

* Get an enumeration of the keys of the JSONObject.

* @return An iterator of the keys.

public Iterator keyIterator() {

// return this.keySet().iterator();

return map.keySet().iterator();

}

/**

* Get a set of keys of the JSONObject.

* @return A keySet.

public Set keys() {

return this.map.keySet();

}

/**

* Get the number of keys stored in the JSONObject.

* @return The number of keys in the JSONObject.

public int size() {

return this.map.size();

}

// /**

// * Produce a JSONArray containing the names of the elements of this

// * JSONObject.

// * @return A JSONArray containing the key strings, or null if the JSONObject

// * is empty.

// */

// public JSONArray names() {

// JSONArray ja = new JSONArray();

// Iterator keys = this.keys();

// while (keys.hasNext()) {

// ja.append(keys.next());

// }

// return ja.size() == 0 ? null : ja;

// }

/**

* Produce a string from a Number.

* @param number A Number

* @return A String.

* @throws RuntimeException If number is null or a non-finite number.

private static String numberToString(Number number) {

if (number == null) {

throw new RuntimeException("Null pointer");

}

testValidity(number);

// Shave off trailing zeros and decimal point, if possible.

String string = number.toString();

if (string.indexOf('.') > 0 && string.indexOf('e') < 0 &&

string.indexOf('E') < 0) {

while (string.endsWith("0")) {

string = string.substring(0, string.length() - 1);

}

if (string.endsWith(".")) {

string = string.substring(0, string.length() - 1);

}

return string;

View remainder of file in raw view

processing/core/src/processing/data/JSONObject.java at master · dimr/processing · GitHub

Repository navigation

Expand file tree

Breadcrumbs

JSONObject.java

Latest commit

History

Breadcrumbs

JSONObject.java

File metadata and controls