+package org.json;
+
+/*
+ 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.StringWriter;
+import java.io.Writer;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+import java.math.BigDecimal;
+import java.math.BigInteger;
+import java.util.Collection;
+import java.util.Enumeration;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Locale;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.ResourceBundle;
+import java.util.Set;
+
+/**
+ * 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> <small>(comma)</small> may appear just
+ * before the closing brace.</li>
+ * <li>Strings may be quoted with <code>'</code> <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>
+ * </ul>
+ *
+ * @author JSON.org
+ * @version 2016-05-20
+ */
+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.
+ */
+ @Override
+ 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.
+ */
+ private final Map<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.
+ */
+ 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) {
+ }
+ }
+ }
+
+ /**
+ * 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 ':'.
+
+ c = x.nextClean();
+ if (c != ':') {
+ throw x.syntaxError("Expected a ':' after a key");
+ }
+ this.putOnce(key, x.nextValue());
+
+// Pairs are separated by ','.
+
+ 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.
+ */
+ public JSONObject(Map<?, ?> map) {
+ this.map = new HashMap<String, Object>();
+ if (map != null) {
+ for (final Entry<?, ?> e : map.entrySet()) {
+ final Object value = e.getValue();
+ if (value != null) {
+ this.map.put(String.valueOf(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.
+ */
+ 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> <small>(left
+ * brace)</small> and ending with <code>}</code>
+ * <small>(right brace)</small>.
+ * @exception 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.
+ */
+ 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<String> keys = bundle.getKeys();
+ while (keys.hasMoreElements()) {
+ Object key = keys.nextElement();
+ if (key != null) {
+
+// 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 enum value associated with a key.
+ *
+ * @param clazz
+ * The type of enum to retrieve.
+ * @param key
+ * A key string.
+ * @return The enum value associated with the key
+ * @throws JSONException
+ * if the key is not found or if the value cannot be converted
+ * to an enum.
+ */
+ public <E extends Enum<E>> E getEnum(Class<E> clazz, String key) throws JSONException {
+ E val = optEnum(clazz, key);
+ if(val==null) {
+ // JSONException should really take a throwable argument.
+ // If it did, I would re-implement this with the Enum.valueOf
+ // method and place any thrown exception in the JSONException
+ throw new JSONException("JSONObject[" + quote(key)
+ + "] is not an enum of type " + quote(clazz.getSimpleName())
+ + ".");
+ }
+ return val;
+ }
+
+ /**
+ * 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 BigInteger 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 cannot
+ * be converted to BigInteger.
+ */
+ public BigInteger getBigInteger(String key) throws JSONException {
+ Object object = this.get(key);
+ try {
+ return new BigInteger(object.toString());
+ } catch (Exception e) {
+ throw new JSONException("JSONObject[" + quote(key)
+ + "] could not be converted to BigInteger.");
+ }
+ }
+
+ /**
+ * Get the BigDecimal 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
+ * cannot be converted to BigDecimal.
+ */
+ public BigDecimal getBigDecimal(String key) throws JSONException {
+ Object object = this.get(key);
+ try {
+ return new BigDecimal(object.toString());
+ } catch (Exception e) {
+ throw new JSONException("JSONObject[" + quote(key)
+ + "] could not be converted to BigDecimal.");
+ }
+ }
+
+ /**
+ * 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.
+ */
+ public static String[] getNames(JSONObject jo) {
+ int length = jo.length();
+ if (length == 0) {
+ return null;
+ }
+ Iterator<String> iterator = jo.keys();
+ String[] names = new String[length];
+ int i = 0;
+ while (iterator.hasNext()) {
+ names[i] = 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;
+ }
+
+ /**
+ * 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 BigInteger) {
+ this.put(key, ((BigInteger)value).add(BigInteger.ONE));
+ } else if (value instanceof BigDecimal) {
+ this.put(key, ((BigDecimal)value).add(BigDecimal.ONE));
+ } else if (value instanceof Integer) {
+ this.put(key, (Integer) value + 1);
+ } else if (value instanceof Long) {
+ this.put(key, (Long) value + 1);
+ } else if (value instanceof Double) {
+ this.put(key, (Double) value + 1);
+ } else if (value instanceof Float) {
+ this.put(key, (Float) value + 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.
+ */
+ public Iterator<String> keys() {
+ return this.keySet().iterator();
+ }
+
+ /**
+ * Get a set of keys of the JSONObject.
+ *
+ * @return A keySet.
+ */
+ public Set<String> keySet() {
+ return this.map.keySet();
+ }
+
+ /**
+ * 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.
+ */
+ public JSONArray names() {
+ JSONArray ja = new JSONArray();
+ Iterator<String> 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 the enum value associated with a key.
+ *
+ * @param clazz
+ * The type of enum to retrieve.
+ * @param key
+ * A key string.
+ * @return The enum value associated with the key or null if not found
+ */
+ public <E extends Enum<E>> E optEnum(Class<E> clazz, String key) {
+ return this.optEnum(clazz, key, null);
+ }
+
+ /**
+ * Get the enum value associated with a key.
+ *
+ * @param clazz
+ * The type of enum to retrieve.
+ * @param key
+ * A key string.
+ * @param defaultValue
+ * The default in case the value is not found
+ * @return The enum value associated with the key or defaultValue
+ * if the value is not found or cannot be assigned to clazz
+ */
+ public <E extends Enum<E>> E optEnum(Class<E> clazz, String key, E defaultValue) {
+ try {
+ Object val = this.opt(key);
+ if (NULL.equals(val)) {
+ return defaultValue;
+ }
+ if (clazz.isAssignableFrom(val.getClass())) {
+ // we just checked it!
+ @SuppressWarnings("unchecked")
+ E myE = (E) val;
+ return myE;
+ }
+ return Enum.valueOf(clazz, val.toString());
+ } catch (IllegalArgumentException e) {
+ return defaultValue;
+ } catch (NullPointerException e) {
+ return defaultValue;
+ }
+ }
+
+ /**
+ * 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 BigInteger 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 BigInteger optBigInteger(String key, BigInteger defaultValue) {
+ try {
+ return this.getBigInteger(key);
+ } catch (Exception e) {
+ return defaultValue;
+ }
+ }
+
+ /**
+ * Get an optional BigDecimal 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 BigDecimal optBigDecimal(String key, BigDecimal defaultValue) {
+ try {
+ return this.getBigDecimal(key);
+ } catch (Exception e) {
+ return defaultValue;
+ }
+ }
+
+ /**
+ * 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();
+ }
+
+ 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 ("getClass".equals(name)
+ || "getDeclaringClass".equals(name)) {
+ 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
+ */
+ 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
+ */
+ 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.
+ */
+ public JSONObject put(String key, Object value) throws JSONException {
+ if (key == null) {
+ throw new NullPointerException("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 string
+ * @param value object
+ * @return this.
+ * @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;
+ }
+
+ /**
+ * Creates a JSONPointer using an intialization string and tries to
+ * match it to an item within this JSONObject. For example, given a
+ * JSONObject initialized with this document:
+ * <pre>
+ * {
+ * "a":{"b":"c"}
+ * }
+ * </pre>
+ * and this JSONPointer string:
+ * <pre>
+ * "/a/b"
+ * </pre>
+ * Then this method will return the String "c".
+ * A JSONPointerException may be thrown from code called by this method.
+ *
+ * @param jsonPointer string that can be used to create a JSONPointer
+ * @return the item matched by the JSONPointer, otherwise null
+ */
+ public Object query(String jsonPointer) {
+ return new JSONPointer(jsonPointer).queryFrom(this);
+ }
+
+ /**
+ * Queries and returns a value from this object using {@code jsonPointer}, or
+ * returns null if the query fails due to a missing key.
+ *
+ * @param jsonPointer the string representation of the JSON pointer
+ * @return the queried value or {@code null}
+ * @throws IllegalArgumentException if {@code jsonPointer} has invalid syntax
+ */
+ public Object optQuery(String jsonPointer) {
+ JSONPointer pointer = new JSONPointer(jsonPointer);
+ try {
+ return pointer.queryFrom(this);
+ } catch (JSONPointerException e) {
+ return null;
+ }
+ }
+
+ /**
+ * 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) {
+ StringWriter sw = new StringWriter();
+ synchronized (sw.getBuffer()) {
+ try {
+ return quote(string, sw).toString();
+ } catch (IOException ignored) {
+ // will never happen - we are writing to a string writer
+ return "";
+ }
+ }
+ }
+
+ public static Writer quote(String string, Writer w) throws IOException {
+ if (string == null || string.length() == 0) {
+ w.write("\"\"");
+ return w;
+ }
+
+ char b;
+ char c = 0;
+ String hhhh;
+ int i;
+ int len = string.length();
+
+ w.write('"');
+ for (i = 0; i < len; i += 1) {
+ b = c;
+ c = string.charAt(i);
+ switch (c) {
+ case '\\':
+ case '"':
+ w.write('\\');
+ w.write(c);
+ break;
+ case '/':
+ if (b == '<') {
+ w.write('\\');
+ }
+ w.write(c);
+ break;
+ case '\b':
+ w.write("\\b");
+ break;
+ case '\t':
+ w.write("\\t");
+ break;
+ case '\n':
+ w.write("\\n");
+ break;
+ case '\f':
+ w.write("\\f");
+ break;
+ case '\r':
+ w.write("\\r");
+ break;
+ default:
+ if (c < ' ' || (c >= '\u0080' && c < '\u00a0')
+ || (c >= '\u2000' && c < '\u2100')) {
+ w.write("\\u");
+ hhhh = Integer.toHexString(c);
+ w.write("0000", 0, 4 - hhhh.length());
+ w.write(hhhh);
+ } else {
+ w.write(c);
+ }
+ }
+ }
+ w.write('"');
+ return w;
+ }
+
+ /**
+ * 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);
+ }
+
+ /**
+ * Determine if two JSONObjects are similar.
+ * They must contain the same set of names which must be associated with
+ * similar values.
+ *
+ * @param other The other JSONObject
+ * @return true if they are equal
+ */
+ public boolean similar(Object other) {
+ try {
+ if (!(other instanceof JSONObject)) {
+ return false;
+ }
+ Set<String> set = this.keySet();
+ if (!set.equals(((JSONObject)other).keySet())) {
+ return false;
+ }
+ Iterator<String> iterator = set.iterator();
+ while (iterator.hasNext()) {
+ String name = iterator.next();
+ Object valueThis = this.get(name);
+ Object valueOther = ((JSONObject)other).get(name);
+ if (valueThis instanceof JSONObject) {
+ if (!((JSONObject)valueThis).similar(valueOther)) {
+ return false;
+ }
+ } else if (valueThis instanceof JSONArray) {
+ if (!((JSONArray)valueThis).similar(valueOther)) {
+ return false;
+ }
+ } else if (!valueThis.equals(valueOther)) {
+ return false;
+ }
+ }
+ return true;
+ } catch (Throwable exception) {
+ return false;
+ }
+ }
+
+ /**
+ * 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) {
+ 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.
+ */
+
+ char initial = string.charAt(0);
+ if ((initial >= '0' && initial <= '9') || initial == '-') {
+ try {
+ if (string.indexOf('.') > -1 || string.indexOf('e') > -1
+ || string.indexOf('E') > -1
+ || "-0".equals(string)) {
+ Double d = Double.valueOf(string);
+ if (!d.isInfinite() && !d.isNaN()) {
+ return d;
+ }
+ } else {
+ Long myLong = new Long(string);
+ if (string.equals(myLong.toString())) {
+ if (myLong.longValue() == myLong.intValue()) {
+ return Integer.valueOf(myLong.intValue());
+ }
+ 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> <small>(left
+ * brace)</small> and ending with <code>}</code> <small>(right
+ * brace)</small>.
+ */
+ public String toString() {
+ try {
+ return this.toString(0);
+ } 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> <small>(left
+ * brace)</small> and ending with <code>}</code> <small>(right
+ * brace)</small>.
+ * @throws JSONException
+ * If the object contains an invalid number.
+ */
+ public String toString(int indentFactor) throws JSONException {
+ StringWriter w = new StringWriter();
+ synchronized (w.getBuffer()) {
+ return this.write(w, indentFactor, 0).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> <small>(left
+ * brace)</small> and ending with <code>}</code> <small>(right
+ * brace)</small>.
+ * @throws JSONException
+ * If the value is or contains an invalid number.
+ */
+ public static String valueToString(Object value) throws JSONException {
+ if (value == null || value.equals(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) {
+ Map<?, ?> map = (Map<?, ?>) value;
+ return new JSONObject(map).toString();
+ }
+ if (value instanceof Collection) {
+ Collection<?> coll = (Collection<?>) value;
+ return new JSONArray(coll).toString();
+ }
+ if (value.getClass().isArray()) {
+ return new JSONArray(value).toString();
+ }
+ 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
+ */
+ 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 || object instanceof BigInteger
+ || object instanceof BigDecimal) {
+ return object;
+ }
+
+ if (object instanceof Collection) {
+ Collection<?> coll = (Collection<?>) object;
+ return new JSONArray(coll);
+ }
+ if (object.getClass().isArray()) {
+ return new JSONArray(object);
+ }
+ if (object instanceof Map) {
+ Map<?, ?> map = (Map<?, ?>) object;
+ return new JSONObject(map);
+ }
+ 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
+ */
+ public Writer write(Writer writer) throws JSONException {
+ return this.write(writer, 0, 0);
+ }
+
+ static final Writer writeValue(Writer writer, Object value,
+ int indentFactor, int indent) throws JSONException, IOException {
+ if (value == null || value.equals(null)) {
+ writer.write("null");
+ } else if (value instanceof JSONObject) {
+ ((JSONObject) value).write(writer, indentFactor, indent);
+ } else if (value instanceof JSONArray) {
+ ((JSONArray) value).write(writer, indentFactor, indent);
+ } else if (value instanceof Map) {
+ Map<?, ?> map = (Map<?, ?>) value;
+ new JSONObject(map).write(writer, indentFactor, indent);
+ } else if (value instanceof Collection) {
+ Collection<?> coll = (Collection<?>) value;
+ new JSONArray(coll).write(writer, indentFactor, indent);
+ } else if (value.getClass().isArray()) {
+ new JSONArray(value).write(writer, indentFactor, indent);
+ } else if (value instanceof Number) {
+ writer.write(numberToString((Number) value));
+ } else if (value instanceof Boolean) {
+ writer.write(value.toString());
+ } else if (value instanceof JSONString) {
+ Object o;
+ try {
+ o = ((JSONString) value).toJSONString();
+ } catch (Exception e) {
+ throw new JSONException(e);
+ }
+ writer.write(o != null ? o.toString() : quote(value.toString()));
+ } else {
+ quote(value.toString(), writer);
+ }
+ return writer;
+ }
+
+ static final void indent(Writer writer, int indent) throws IOException {
+ for (int i = 0; i < indent; i += 1) {
+ writer.write(' ');
+ }
+ }
+
+ /**
+ * 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.
+ *
+ * @param writer
+ * Writes the serialized JSON
+ * @param indentFactor
+ * The number of spaces to add to each level of indentation.
+ * @param indent
+ * The indention of the top level.
+ * @return The writer.
+ * @throws JSONException
+ */
+ public Writer write(Writer writer, int indentFactor, int indent)
+ throws JSONException {
+ try {
+ boolean commanate = false;
+ final int length = this.length();
+ Iterator<String> keys = this.keys();
+ writer.write('{');
+
+ if (length == 1) {
+ Object key = keys.next();
+ writer.write(quote(key.toString()));
+ writer.write(':');
+ if (indentFactor > 0) {
+ writer.write(' ');
+ }
+ writeValue(writer, this.map.get(key), indentFactor, indent);
+ } else if (length != 0) {
+ final int newindent = indent + indentFactor;
+ while (keys.hasNext()) {
+ Object key = keys.next();
+ if (commanate) {
+ writer.write(',');
+ }
+ if (indentFactor > 0) {
+ writer.write('\n');
+ }
+ indent(writer, newindent);
+ writer.write(quote(key.toString()));
+ writer.write(':');
+ if (indentFactor > 0) {
+ writer.write(' ');
+ }
+ writeValue(writer, this.map.get(key), indentFactor, newindent);
+ commanate = true;
+ }
+ if (indentFactor > 0) {
+ writer.write('\n');
+ }
+ indent(writer, indent);
+ }
+ writer.write('}');
+ return writer;
+ } catch (IOException exception) {
+ throw new JSONException(exception);
+ }
+ }
+
+ /**
+ * Returns a java.util.Map containing all of the entrys in this object.
+ * If an entry in the object is a JSONArray or JSONObject it will also
+ * be converted.
+ * <p>
+ * Warning: This method assumes that the data structure is acyclical.
+ *
+ * @return a java.util.Map containing the entrys of this object
+ */
+ public Map<String, Object> toMap() {
+ Map<String, Object> results = new HashMap<String, Object>();
+ for (Entry<String, Object> entry : this.map.entrySet()) {
+ Object value;
+ if (entry.getValue() == null || NULL.equals(entry.getValue())) {
+ value = null;
+ } else if (entry.getValue() instanceof JSONObject) {
+ value = ((JSONObject) entry.getValue()).toMap();
+ } else if (entry.getValue() instanceof JSONArray) {
+ value = ((JSONArray) entry.getValue()).toList();
+ } else {
+ value = entry.getValue();
+ }
+ results.put(entry.getKey(), value);
+ }
+ return results;
+ }
+}