JSONObject.java 55.8 KB
Newer Older
Lee Jaebin committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672
package org.json.adf;

/*
Copyright (c) 2002 JSON.org

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.IOException;
import java.io.Writer;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.ResourceBundle;

/**
 * <b>adkのorg.jsonパッケージとの競合を防ぐためにパッケージ名をorg.json.adfにしました。</b>
 * 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.
 * <p>
 * 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.
 * <p>
 * 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>.
 * <p>
 * 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>&nbsp;<small>(comma)</small> may appear just
 *     before the closing brace.</li>
 * <li>Strings may be quoted with <code>'</code>&nbsp;<small>(single
 *     quote)</small>.</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>=></code> as well as
 *     by <code>:</code>.</li>
 * <li>Values can be followed by <code>;</code> <small>(semicolon)</small> as
 *     well as by <code>,</code> <small>(comma)</small>.</li>
 * </ul>
 * @author JSON.org
 * @version 2011-11-24
 */
public class JSONObject {

    /**
     * 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.
         */
        public boolean equals(Object object) {
            return object == null || object == this;
        }

        /**
         * Get the "null" string value.
         * @return The string "null".
         */
        public String toString() {
            return "null";
        }
    }


    /**
     * The map where the JSONObject's properties are kept.
     */
    @SuppressWarnings("rawtypes")
	private final Map 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.
     */
    @SuppressWarnings("rawtypes")
	public JSONObject() {
        this.map = new HashMap();
    }


    /**
     * 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.
     * @throws JSONException If a value is a non-finite number or if a name is duplicated.
     */
    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) {
            }
        }
    }


    /**
     * Construct a JSONObject from a JSONTokener.
     * @param x A JSONTokener object containing the source string.
     * @throws JSONException If there is a syntax error in the source string
     *  or a duplicated key.
     */
    public JSONObject(JSONTokener x) throws JSONException {
        this();
        char c;
        String key;

        if (x.nextClean() != '{') {
            throw x.syntaxError("A JSONObject text must begin with '{'");
        }
        for (;;) {
            c = x.nextClean();
            switch (c) {
            case 0:
                throw x.syntaxError("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 x.syntaxError("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 x.syntaxError("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.
     * @throws JSONException
     */
    @SuppressWarnings({ "rawtypes", "unchecked" })
	public JSONObject(Map map) {
        this.map = new HashMap();
        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) {
                    this.map.put(e.getKey(), wrap(value));
                }
            }
        }
    }


    /**
     * 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.
     */
    public JSONObject(Object bean) {
        this();
        this.populateMap(bean);
    }


    /**
     * 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.
     */
    @SuppressWarnings("rawtypes")
	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>&nbsp;<small>(left brace)</small> and ending
     *  with <code>}</code>&nbsp;<small>(right brace)</small>.
     * @throws JSONException If there is a syntax error in the source
     *  string or a duplicated key.
     */
    public JSONObject(String source) throws JSONException {
        this(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.
     */
    @SuppressWarnings("rawtypes")
	public JSONObject(String baseName, Locale locale) throws JSONException {
        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;
                JSONObject target = this;
                for (int i = 0; i < last; i += 1) {
                    String segment = path[i];
                    JSONObject nextTarget = target.optJSONObject(segment);
                    if (nextTarget == null) {
                        nextTarget = new JSONObject();
                        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.
     */
    public static 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      JSONException if the key is not found.
     */
    public Object get(String key) throws JSONException {
        if (key == null) {
            throw new JSONException("Null key.");
        }
        Object object = this.opt(key);
        if (object == null) {
            throw new JSONException("JSONObject[" + quote(key) +
                    "] not found.");
        }
        return object;
    }


    /**
     * Get the boolean value associated with a key.
     *
     * @param key   A key string.
     * @return      The truth.
     * @throws      JSONException
     *  if the value is not a Boolean or the String "true" or "false".
     */
    public boolean getBoolean(String key) throws JSONException {
        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 JSONException("JSONObject[" + quote(key) +
                "] is not a Boolean.");
    }


    /**
     * Get the double value associated with a key.
     * @param key   A key string.
     * @return      The numeric value.
     * @throws JSONException 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) throws JSONException {
        Object object = this.get(key);
        try {
            return object instanceof Number
                ? ((Number)object).doubleValue()
                : Double.parseDouble((String)object);
        } catch (Exception e) {
            throw new JSONException("JSONObject[" + quote(key) +
                "] is not a number.");
        }
    }


    /**
     * Get the int value associated with a key.
     *
     * @param key   A key string.
     * @return      The integer value.
     * @throws   JSONException if the key is not found or if the value cannot
     *  be converted to an integer.
     */
    public int getInt(String key) throws JSONException {
        Object object = this.get(key);
        try {
            return object instanceof Number
                ? ((Number)object).intValue()
                : Integer.parseInt((String)object);
        } catch (Exception e) {
            throw new JSONException("JSONObject[" + quote(key) +
                "] is not an int.");
        }
    }


    /**
     * Get the JSONArray value associated with a key.
     *
     * @param key   A key string.
     * @return      A JSONArray which is the value.
     * @throws      JSONException if the key is not found or
     *  if the value is not a JSONArray.
     */
    public JSONArray getJSONArray(String key) throws JSONException {
        Object object = this.get(key);
        if (object instanceof JSONArray) {
            return (JSONArray)object;
        }
        throw new JSONException("JSONObject[" + quote(key) +
                "] is not a JSONArray.");
    }


    /**
     * Get the JSONObject value associated with a key.
     *
     * @param key   A key string.
     * @return      A JSONObject which is the value.
     * @throws      JSONException if the key is not found or
     *  if the value is not a JSONObject.
     */
    public JSONObject getJSONObject(String key) throws JSONException {
        Object object = this.get(key);
        if (object instanceof JSONObject) {
            return (JSONObject)object;
        }
        throw new JSONException("JSONObject[" + quote(key) +
                "] is not a JSONObject.");
    }


    /**
     * Get the long value associated with a key.
     *
     * @param key   A key string.
     * @return      The long value.
     * @throws   JSONException if the key is not found or if the value cannot
     *  be converted to a long.
     */
    public long getLong(String key) throws JSONException {
        Object object = this.get(key);
        try {
            return object instanceof Number
                ? ((Number)object).longValue()
                : Long.parseLong((String)object);
        } catch (Exception e) {
            throw new JSONException("JSONObject[" + quote(key) +
                "] is not a long.");
        }
    }


    /**
     * Get an array of field names from a JSONObject.
     *
     * @return An array of field names, or null if there are no names.
     */
    @SuppressWarnings("rawtypes")
	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.
     */
    @SuppressWarnings("rawtypes")
	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;
    }


    /**
     * Get the string associated with a key.
     *
     * @param key   A key string.
     * @return      A string which is the value.
     * @throws   JSONException if there is no string value for the key.
     */
    public String getString(String key) throws JSONException {
        Object object = this.get(key);
        if (object instanceof String) {
            return (String)object;
        }
        throw new JSONException("JSONObject[" + quote(key) +
            "] not a string.");
    }


    /**
     * Determine if the JSONObject contains a specific key.
     * @param key   A key string.
     * @return      true if the key exists in the JSONObject.
     */
    public boolean has(String key) {
        return this.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 JSONObject increment(String key) throws JSONException {
        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 JSONException("Unable to increment [" + quote(key) + "].");
        }
        return this;
    }


    /**
     * Determine if the value associated with the key is null or if there is
     *  no value.
     * @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.
     */
    @SuppressWarnings("rawtypes")
	public Iterator keys() {
        return this.map.keySet().iterator();
    }


    /**
     * Get the number of keys stored in the JSONObject.
     *
     * @return The number of keys in the JSONObject.
     */
    public int length() {
        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.
     */
    @SuppressWarnings("rawtypes")
	public JSONArray names() {
        JSONArray ja = new JSONArray();
        Iterator  keys = this.keys();
        while (keys.hasNext()) {
            ja.put(keys.next());
        }
        return ja.length() == 0 ? null : ja;
    }

    /**
     * Produce a string from a Number.
     * @param  number A Number
     * @return A String.
     * @throws JSONException If n is a non-finite number.
     */
    public static String numberToString(Number number)
            throws JSONException {
        if (number == null) {
            throw new JSONException("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;
    }


    /**
     * Get an optional value associated with a key.
     * @param key   A key string.
     * @return      An object which is the value, or null if there is no value.
     */
    public Object opt(String key) {
        return key == null ? null : this.map.get(key);
    }


    /**
     * Get an optional boolean associated with a key.
     * It returns false if there is no such key, or if the value is not
     * Boolean.TRUE or the String "true".
     *
     * @param key   A key string.
     * @return      The truth.
     */
    public boolean optBoolean(String key) {
        return this.optBoolean(key, false);
    }


    /**
     * 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 optBoolean(String key, boolean defaultValue) {
        try {
            return this.getBoolean(key);
        } catch (Exception e) {
            return defaultValue;
        }
    }


    /**
     * Get an optional double associated with a key,
     * or NaN 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 string which is the key.
     * @return      An object which is the value.
     */
    public double optDouble(String key) {
        return this.optDouble(key, Double.NaN);
    }


    /**
     * 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 optDouble(String key, double defaultValue) {
        try {
            return this.getDouble(key);
        } catch (Exception e) {
            return defaultValue;
        }
    }


    /**
     * Get an optional int value associated with a key,
     * or zero 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.
     * @return      An object which is the value.
     */
    public int optInt(String key) {
        return this.optInt(key, 0);
    }


    /**
     * 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 optInt(String key, int defaultValue) {
        try {
            return this.getInt(key);
        } catch (Exception e) {
            return defaultValue;
        }
    }


    /**
     * Get an optional JSONArray associated with a key.
     * It returns null if there is no such key, or if its value is not a
     * JSONArray.
     *
     * @param key   A key string.
     * @return      A JSONArray which is the value.
     */
    public JSONArray optJSONArray(String key) {
        Object o = this.opt(key);
        return o instanceof JSONArray ? (JSONArray)o : null;
    }


    /**
     * Get an optional JSONObject associated with a key.
     * It returns null if there is no such key, or if its value is not a
     * JSONObject.
     *
     * @param key   A key string.
     * @return      A JSONObject which is the value.
     */
    public JSONObject optJSONObject(String key) {
        Object object = this.opt(key);
        return object instanceof JSONObject ? (JSONObject)object : null;
    }


    /**
     * Get an optional long value associated with a key,
     * or zero 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.
     * @return      An object which is the value.
     */
    public long optLong(String key) {
        return this.optLong(key, 0);
    }


    /**
     * 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 optLong(String key, long defaultValue) {
        try {
            return this.getLong(key);
        } catch (Exception e) {
            return defaultValue;
        }
    }


    /**
     * Get an optional string associated with a key.
     * It returns an empty string if there is no such key. If the value is not
     * a string and is not null, then it is converted to a string.
     *
     * @param key   A key string.
     * @return      A string which is the value.
     */
    public String optString(String key) {
        return this.optString(key, "");
    }


    /**
     * 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 optString(String key, String defaultValue) {
        Object object = this.opt(key);
        return NULL.equals(object) ? defaultValue : object.toString();
    }


    @SuppressWarnings({ "rawtypes", "unchecked" })
	private void populateMap(Object bean) {
        Class klass = bean.getClass();

// If klass is a System class then set includeSuperClass to false.

        boolean includeSuperClass = klass.getClassLoader() != null;

        Method[] methods = includeSuperClass
                ? klass.getMethods()
                : klass.getDeclaredMethods();
        for (int i = 0; i < methods.length; i += 1) {
            try {
                Method method = methods[i];
                if (Modifier.isPublic(method.getModifiers())) {
                    String name = method.getName();
                    String key = "";
                    if (name.startsWith("get")) {
                        if (name.equals("getClass") ||
                                name.equals("getDeclaringClass")) {
                            key = "";
                        } else {
                            key = name.substring(3);
                        }
                    } else if (name.startsWith("is")) {
                        key = name.substring(2);
                    }
                    if (key.length() > 0 &&
                            Character.isUpperCase(key.charAt(0)) &&
                            method.getParameterTypes().length == 0) {
                        if (key.length() == 1) {
                            key = key.toLowerCase();
                        } else if (!Character.isUpperCase(key.charAt(1))) {
                            key = key.substring(0, 1).toLowerCase() +
                                key.substring(1);
                        }

                        Object result = method.invoke(bean, (Object[])null);
                        if (result != null) {
                            this.map.put(key, wrap(result));
                        }
                    }
                }
            } catch (Exception ignore) {
            }
        }
    }


    /**
     * Put a key/boolean pair in the JSONObject.
     *
     * @param key   A key string.
     * @param value A boolean which is the value.
     * @return this.
     * @throws JSONException If the key is null.
     */
    public JSONObject put(String key, boolean value) throws JSONException {
        this.put(key, value ? Boolean.TRUE : Boolean.FALSE);
        return this;
    }


    /**
     * Put a key/value pair in the JSONObject, where the value will be a
     * JSONArray which is produced from a Collection.
     * @param key   A key string.
     * @param value A Collection value.
     * @return      this.
     * @throws JSONException
     */
    @SuppressWarnings("rawtypes")
	public JSONObject put(String key, Collection value) throws JSONException {
        this.put(key, new JSONArray(value));
        return this;
    }


    /**
     * Put a key/double pair in the JSONObject.
     *
     * @param key   A key string.
     * @param value A double which is the value.
     * @return this.
     * @throws JSONException If the key is null or if the number is invalid.
     */
    public JSONObject put(String key, double value) throws JSONException {
        this.put(key, new Double(value));
        return this;
    }


    /**
     * Put a key/int pair in the JSONObject.
     *
     * @param key   A key string.
     * @param value An int which is the value.
     * @return this.
     * @throws JSONException If the key is null.
     */
    public JSONObject put(String key, int value) throws JSONException {
        this.put(key, new Integer(value));
        return this;
    }


    /**
     * Put a key/long pair in the JSONObject.
     *
     * @param key   A key string.
     * @param value A long which is the value.
     * @return this.
     * @throws JSONException If the key is null.
     */
    public JSONObject put(String key, long value) throws JSONException {
        this.put(key, new Long(value));
        return this;
    }


    /**
     * Put a key/value pair in the JSONObject, where the value will be a
     * JSONObject which is produced from a Map.
     * @param key   A key string.
     * @param value A Map value.
     * @return      this.
     * @throws JSONException
     */
    @SuppressWarnings("rawtypes")
	public JSONObject put(String key, Map value) throws JSONException {
        this.put(key, new JSONObject(value));
        return this;
    }


    /**
     * Put a key/value pair in the JSONObject. If the value is null,
     * then the key will be removed from the JSONObject if it is present.
     * @param key   A key string.
     * @param value An object which is the value. It should be of one of these
     *  types: Boolean, Double, Integer, JSONArray, JSONObject, Long, String,
     *  or the JSONObject.NULL object.
     * @return this.
     * @throws JSONException If the value is non-finite number
     *  or if the key is null.
     */
    @SuppressWarnings("unchecked")
	public JSONObject put(String key, Object value) throws JSONException {
        if (key == null) {
            throw new JSONException("Null key.");
        }
        if (value != null) {
            testValidity(value);
            this.map.put(key, value);
        } else {
            this.remove(key);
        }
        return this;
    }


    /**
     * Put a key/value pair in the JSONObject, but only if the key and the
     * value are both non-null, and only if there is not already a member
     * with that name.
     * @param key
     * @param value
     * @return his.
     * @throws JSONException if the key is a duplicate
     */
    public JSONObject putOnce(String key, Object value) throws JSONException {
        if (key != null && value != null) {
            if (this.opt(key) != null) {
                throw new JSONException("Duplicate key \"" + key + "\"");
            }
            this.put(key, value);
        }
        return this;
    }


    /**
     * Put a key/value pair in the JSONObject, but only if the
     * key and the value are both non-null.
     * @param key   A key string.
     * @param value An object which is the value. It should be of one of these
     *  types: Boolean, Double, Integer, JSONArray, JSONObject, Long, String,
     *  or the JSONObject.NULL object.
     * @return this.
     * @throws JSONException If the value is a non-finite number.
     */
    public JSONObject putOpt(String key, Object value) throws JSONException {
        if (key != null && value != null) {
            this.put(key, value);
        }
        return this;
    }


    /**
     * Produce a string in double quotes with backslash sequences in all the
     * right places. A backslash will be inserted within </, producing <\/,
     * allowing JSON text to be delivered in HTML. In JSON text, a string
     * cannot contain a control character or an unescaped quote or backslash.
     * @param string A String
     * @return  A String correctly formatted for insertion in a JSON text.
     */
    public static String quote(String string) {
        if (string == null || string.length() == 0) {
            return "\"\"";
        }

        char         b;
        char         c = 0;
        String       hhhh;
        int          i;
        int          len = string.length();
        StringBuffer sb = new StringBuffer(len + 4);

        sb.append('"');
        for (i = 0; i < len; i += 1) {
            b = c;
            c = string.charAt(i);
            switch (c) {
            case '\\':
            case '"':
                sb.append('\\');
                sb.append(c);
                break;
            case '/':
                if (b == '<') {
                    sb.append('\\');
                }
                sb.append(c);
                break;
            case '\b':
                sb.append("\\b");
                break;
            case '\t':
                sb.append("\\t");
                break;
            case '\n':
                sb.append("\\n");
                break;
            case '\f':
                sb.append("\\f");
                break;
            case '\r':
                sb.append("\\r");
                break;
            default:
                if (c < ' ' || (c >= '\u0080' && c < '\u00a0') ||
                               (c >= '\u2000' && c < '\u2100')) {
                    hhhh = "000" + Integer.toHexString(c);
                    sb.append("\\u" + hhhh.substring(hhhh.length() - 4));
                } else {
                    sb.append(c);
                }
            }
        }
        sb.append('"');
        return sb.toString();
    }

    /**
     * Remove a name and its value, if present.
     * @param key The name to be removed.
     * @return The value that was associated with the name,
     * or null if there was no value.
     */
    public Object remove(String key) {
        return this.map.remove(key);
    }

    /**
     * Try to convert a string into a number, boolean, or null. If the string
     * can't be converted, return the string.
     * @param string A String.
     * @return A simple JSON value.
     */
    public static Object stringToValue(String string) {
        Double d;
        if (string.equals("")) {
            return string;
        }
        if (string.equalsIgnoreCase("true")) {
            return Boolean.TRUE;
        }
        if (string.equalsIgnoreCase("false")) {
            return Boolean.FALSE;
        }
        if (string.equalsIgnoreCase("null")) {
            return JSONObject.NULL;
        }

        /*
         * If it might be a number, try converting it.
         * If a number cannot be produced, then the value will just
         * be a string. Note that the plus and implied string
         * conventions are non-standard. A JSON parser may accept
         * non-JSON forms as long as it accepts all correct JSON forms.
         */

        char b = string.charAt(0);
        if ((b >= '0' && b <= '9') || b == '.' || b == '-' || b == '+') {
            try {
                if (string.indexOf('.') > -1 ||
                        string.indexOf('e') > -1 || string.indexOf('E') > -1) {
                    d = Double.valueOf(string);
                    if (!d.isInfinite() && !d.isNaN()) {
                        return d;
                    }
                } else {
                    Long myLong = new Long(string);
                    if (myLong.longValue() == myLong.intValue()) {
                        return new Integer(myLong.intValue());
                    } else {
                        return myLong;
                    }
                }
            }  catch (Exception ignore) {
            }
        }
        return string;
    }


    /**
     * Throw an exception if the object is a NaN or infinite number.
     * @param o The object to test.
     * @throws JSONException If o is a non-finite number.
     */
    public static void testValidity(Object o) throws JSONException {
        if (o != null) {
            if (o instanceof Double) {
                if (((Double)o).isInfinite() || ((Double)o).isNaN()) {
                    throw new JSONException(
                        "JSON does not allow non-finite numbers.");
                }
            } else if (o instanceof Float) {
                if (((Float)o).isInfinite() || ((Float)o).isNaN()) {
                    throw new JSONException(
                        "JSON does not allow non-finite numbers.");
                }
            }
        }
    }


    /**
     * Produce a JSONArray containing the values of the members of this
     * JSONObject.
     * @param names A JSONArray containing a list of key strings. This
     * determines the sequence of the values in the result.
     * @return A JSONArray of values.
     * @throws JSONException If any of the values are non-finite numbers.
     */
    public JSONArray toJSONArray(JSONArray names) throws JSONException {
        if (names == null || names.length() == 0) {
            return null;
        }
        JSONArray ja = new JSONArray();
        for (int i = 0; i < names.length(); i += 1) {
            ja.put(this.opt(names.getString(i)));
        }
        return ja;
    }

    /**
     * Make a JSON text of this JSONObject. For compactness, no whitespace
     * is added. If this would not result in a syntactically correct JSON text,
     * then null will be returned instead.
     * <p>
     * Warning: This method assumes that the data structure is acyclical.
     *
     * @return a printable, displayable, portable, transmittable
     *  representation of the object, beginning
     *  with <code>{</code>&nbsp;<small>(left brace)</small> and ending
     *  with <code>}</code>&nbsp;<small>(right brace)</small>.
     */
    @SuppressWarnings("rawtypes")
	public String toString() {
        try {
            Iterator     keys = this.keys();
            StringBuffer sb = new StringBuffer("{");

            while (keys.hasNext()) {
                if (sb.length() > 1) {
                    sb.append(',');
                }
                Object o = keys.next();
                sb.append(quote(o.toString()));
                sb.append(':');
                sb.append(valueToString(this.map.get(o)));
            }
            sb.append('}');
            return sb.toString();
        } catch (Exception e) {
            return null;
        }
    }


    /**
     * Make a prettyprinted JSON text of this JSONObject.
     * <p>
     * Warning: This method assumes that the data structure is acyclical.
     * @param indentFactor The number of spaces to add to each level of
     *  indentation.
     * @return a printable, displayable, portable, transmittable
     *  representation of the object, beginning
     *  with <code>{</code>&nbsp;<small>(left brace)</small> and ending
     *  with <code>}</code>&nbsp;<small>(right brace)</small>.
     * @throws JSONException If the object contains an invalid number.
     */
    public String toString(int indentFactor) throws JSONException {
        return this.toString(indentFactor, 0);
    }


    /**
     * Make a prettyprinted JSON text of this JSONObject.
     * <p>
     * Warning: This method assumes that the data structure is acyclical.
     * @param indentFactor The number of spaces to add to each level of
     *  indentation.
     * @param indent The indentation of the top level.
     * @return a printable, displayable, transmittable
     *  representation of the object, beginning
     *  with <code>{</code>&nbsp;<small>(left brace)</small> and ending
     *  with <code>}</code>&nbsp;<small>(right brace)</small>.
     * @throws JSONException If the object contains an invalid number.
     */
    @SuppressWarnings("rawtypes")
	String toString(int indentFactor, int indent) throws JSONException {
        int i;
        int length = this.length();
        if (length == 0) {
            return "{}";
        }
        Iterator     keys = this.keys();
        int          newindent = indent + indentFactor;
        Object       object;
        StringBuffer sb = new StringBuffer("{");
        if (length == 1) {
            object = keys.next();
            sb.append(quote(object.toString()));
            sb.append(": ");
            sb.append(valueToString(this.map.get(object), indentFactor,
                    indent));
        } else {
            while (keys.hasNext()) {
                object = keys.next();
                if (sb.length() > 1) {
                    sb.append(",\n");
                } else {
                    sb.append('\n');
                }
                for (i = 0; i < newindent; i += 1) {
                    sb.append(' ');
                }
                sb.append(quote(object.toString()));
                sb.append(": ");
                sb.append(valueToString(this.map.get(object), indentFactor,
                        newindent));
            }
            if (sb.length() > 1) {
                sb.append('\n');
                for (i = 0; i < indent; i += 1) {
                    sb.append(' ');
                }
            }
        }
        sb.append('}');
        return sb.toString();
    }


    /**
     * Make a JSON text of an Object value. If the object has an
     * value.toJSONString() method, then that method will be used to produce
     * the JSON text. The method is required to produce a strictly
     * conforming text. If the object does not contain a toJSONString
     * method (which is the most common case), then a text will be
     * produced by other means. If the value is an array or Collection,
     * then a JSONArray will be made from it and its toJSONString method
     * will be called. If the value is a MAP, then a JSONObject will be made
     * from it and its toJSONString method will be called. Otherwise, the
     * value's toString method will be called, and the result will be quoted.
     *
     * <p>
     * Warning: This method assumes that the data structure is acyclical.
     * @param value The value to be serialized.
     * @return a printable, displayable, transmittable
     *  representation of the object, beginning
     *  with <code>{</code>&nbsp;<small>(left brace)</small> and ending
     *  with <code>}</code>&nbsp;<small>(right brace)</small>.
     * @throws JSONException If the value is or contains an invalid number.
     */
    @SuppressWarnings("rawtypes")
	public static String valueToString(Object value) throws JSONException {
        if (value == null) {
            return "null";
        }
        if (value instanceof JSONString) {
            Object object;
            try {
                object = ((JSONString)value).toJSONString();
            } catch (Exception e) {
                throw new JSONException(e);
            }
            if (object instanceof String) {
                return (String)object;
            }
            throw new JSONException("Bad value from toJSONString: " + object);
        }
        if (value instanceof Number) {
            return numberToString((Number) value);
        }
        if (value instanceof Boolean || value instanceof JSONObject ||
                value instanceof JSONArray) {
            return value.toString();
        }
        if (value instanceof Map) {
            return new JSONObject((Map)value).toString();
        }
        if (value instanceof Collection) {
            return new JSONArray((Collection)value).toString();
        }
        if (value.getClass().isArray()) {
            return new JSONArray(value).toString();
        }
        return quote(value.toString());
    }


    /**
     * Make a prettyprinted JSON text of an object value.
     * <p>
     * Warning: This method assumes that the data structure is acyclical.
     * @param value The value to be serialized.
     * @param indentFactor The number of spaces to add to each level of
     *  indentation.
     * @param indent The indentation of the top level.
     * @return a printable, displayable, transmittable
     *  representation of the object, beginning
     *  with <code>{</code>&nbsp;<small>(left brace)</small> and ending
     *  with <code>}</code>&nbsp;<small>(right brace)</small>.
     * @throws JSONException If the object contains an invalid number.
     */
     @SuppressWarnings("rawtypes")
	static String valueToString(
         Object value,
         int    indentFactor,
         int    indent
     ) throws JSONException {
         if (value == null || value.equals("")) {
             return "null";
         }
        try {
            if (value instanceof JSONString) {
                Object o = ((JSONString)value).toJSONString();
                if (o instanceof String) {
                    return (String)o;
                }
            }
        } catch (Exception ignore) {
        }
        if (value instanceof Number) {
            return numberToString((Number) value);
        }
        if (value instanceof Boolean) {
            return value.toString();
        }
        if (value instanceof JSONObject) {
            return ((JSONObject)value).toString(indentFactor, indent);
        }
        if (value instanceof JSONArray) {
            return ((JSONArray)value).toString(indentFactor, indent);
        }
        if (value instanceof Map) {
            return new JSONObject((Map)value).toString(indentFactor, indent);
        }
        if (value instanceof Collection) {
            return new JSONArray((Collection)value).toString(indentFactor, indent);
        }
        if (value.getClass().isArray()) {
            return new JSONArray(value).toString(indentFactor, indent);
        }
        return quote(value.toString());
    }


     /**
      * Wrap an object, if necessary. If the object is null, return the NULL
      * object. If it is an array or collection, wrap it in a JSONArray. If
      * it is a map, wrap it in a JSONObject. If it is a standard property
      * (Double, String, et al) then it is already wrapped. Otherwise, if it
      * comes from one of the java packages, turn it into a string. And if
      * it doesn't, try to wrap it in a JSONObject. If the wrapping fails,
      * then null is returned.
      *
      * @param object The object to wrap
      * @return The wrapped value
      */
     @SuppressWarnings("rawtypes")
	public static Object wrap(Object object) {
         try {
             if (object == null) {
                 return NULL;
             }
             if (object instanceof JSONObject || object instanceof JSONArray  ||
                     NULL.equals(object)      || object instanceof JSONString ||
                     object instanceof Byte   || object instanceof Character  ||
                     object instanceof Short  || object instanceof Integer    ||
                     object instanceof Long   || object instanceof Boolean    ||
                     object instanceof Float  || object instanceof Double     ||
                     object instanceof String) {
                 return object;
             }

             if (object instanceof Collection) {
                 return new JSONArray((Collection)object);
             }
             if (object.getClass().isArray()) {
                 return new JSONArray(object);
             }
             if (object instanceof Map) {
                 return new JSONObject((Map)object);
             }
             Package objectPackage = object.getClass().getPackage();
             String objectPackageName = objectPackage != null
                 ? objectPackage.getName()
                 : "";
             if (
                 objectPackageName.startsWith("java.") ||
                 objectPackageName.startsWith("javax.") ||
                 object.getClass().getClassLoader() == null
             ) {
                 return object.toString();
             }
             return new JSONObject(object);
         } catch(Exception exception) {
             return null;
         }
     }


     /**
      * Write the contents of the JSONObject as JSON text to a writer.
      * For compactness, no whitespace is added.
      * <p>
      * Warning: This method assumes that the data structure is acyclical.
      *
      * @return The writer.
      * @throws JSONException
      */
     @SuppressWarnings("rawtypes")
	public Writer write(Writer writer) throws JSONException {
        try {
            boolean  commanate = false;
            Iterator keys = this.keys();
            writer.write('{');

            while (keys.hasNext()) {
                if (commanate) {
                    writer.write(',');
                }
                Object key = keys.next();
                writer.write(quote(key.toString()));
                writer.write(':');
                Object value = this.map.get(key);
                if (value instanceof JSONObject) {
                    ((JSONObject)value).write(writer);
                } else if (value instanceof JSONArray) {
                    ((JSONArray)value).write(writer);
                } else {
                    writer.write(valueToString(value));
                }
                commanate = true;
            }
            writer.write('}');
            return writer;
        } catch (IOException exception) {
            throw new JSONException(exception);
        }
     }

    /**
     * Get an array of field values from a JSONObject.
     *
     * @return An array of field values, or null if there are no values.
     */
    @SuppressWarnings("rawtypes")
    public static List<String> getValues(JSONObject jo) {
        List<String> values = new ArrayList<String>();
        int length = jo.length();
        if (length == 0) {
            return values;
        }
        Iterator iterator = jo.keys();
        while (iterator.hasNext()) {
            String name = (String)iterator.next();
            values.add(jo.getString(name));
        }
        return values;
    }
}