* @author JSON.org
* @version 2016-08-15
*/
-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;
- }
-
- /**
- * A Null object is equal to the null value and to itself.
- *
- * @return always returns 0.
- */
- @Override
- public int hashCode() {
- return 0;
- }
-
- /**
- * Get the "null" string value.
- *
- * @return The string "null".
- */
- @Override
- 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() {
- // HashMap is used on purpose to ensure that elements are unordered by
- // the specification.
- // JSON tends to be a portable transfer format to allows the container
- // implementations to rearrange their items for a faster element
- // retrieval based on associative access.
- // Therefore, an implementation mustn't rely on the order of the item.
- 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(names.length);
- 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");
- }
-
- // Use syntaxError(..) to include error location
-
- if (key != null) {
- // Check if key exists
- if (this.opt(key) != null) {
- // key already exists
- throw x.syntaxError("Duplicate key \"" + key + "\"");
- }
- // Only add value if non-null
- Object value = x.nextValue();
- if (value != null) {
- this.put(key, value);
- }
- }
-
- // 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 m A map object that can be used to initialize the contents of the
- * JSONObject.
- * @throws JSONException If a value in the map is non-finite number.
- * @throws NullPointerException If a key in the map is <code>null</code>
- */
- public JSONObject(Map<?, ?> m) {
- if (m == null) {
- this.map = new HashMap<String, Object>();
- } else {
- this.map = new HashMap<String, Object>(m.size());
- for (final Entry<?, ?> e : m.entrySet()) {
- if (e.getKey() == null) {
- throw new NullPointerException("Null key.");
- }
- 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.
- * <p>
- * 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.
- * <p>
- * Methods that are <code>static</code>, return <code>void</code>, have
- * parameters, or are "bridge" methods, are ignored.
- * <p>
- * 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>.
- * <p>
- * The {@link JSONPropertyName} annotation can be used on a bean getter to
- * override key name used in the JSONObject. For example, using the object above
- * with the <code>getName</code> method, if we annotated it with:
- *
- * <pre>
- * @JSONPropertyName("FullName")
- * public String getName() {
- * return this.name;
- * }
- * </pre>
- *
- * The resulting JSON object would contain <code>"FullName": "Larry Fine"</code>
- * <p>
- * Similarly, the {@link JSONPropertyName} annotation can be used on non-
- * <code>get</code> and <code>is</code> methods. We can also override key name
- * used in the JSONObject as seen below even though the field would normally be
- * ignored:
- *
- * <pre>
- * @JSONPropertyName("FullName")
- * public String fullName() {
- * return this.name;
- * }
- * </pre>
- *
- * The resulting JSON object would contain <code>"FullName": "Larry Fine"</code>
- * <p>
- * The {@link JSONPropertyIgnore} annotation can be used to force the bean
- * property to not be serialized into JSON. If both {@link JSONPropertyIgnore}
- * and {@link JSONPropertyName} are defined on the same method, a depth
- * comparison is performed and the one closest to the concrete class being
- * serialized is used. If both annotations are at the same level, then the
- * {@link JSONPropertyIgnore} annotation takes precedent and the field is not
- * serialized. For example, the following declaration would prevent the
- * <code>getName</code> method from being serialized:
- *
- * <pre>
- * @JSONPropertyName("FullName")
- * @JSONPropertyIgnore
- * public String getName() {
- * return this.name;
- * }
- * </pre>
- * <p>
- *
- * @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(names.length);
- 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));
- }
- }
- }
-
- /**
- * Constructor to specify an initial capacity of the internal map. Useful for
- * library internal calls where we know, or at least can best guess, how big
- * this JSONObject will be.
- *
- * @param initialCapacity initial capacity of the internal map.
- */
- protected JSONObject(int initialCapacity) {
- this.map = new HashMap<String, Object>(initialCapacity);
- }
-
- /**
- * 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 non-finite number.
- * @throws NullPointerException If the key is <code>null</code>.
- */
- 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 value is non-finite number or if the
- * current value associated with the key is not a
- * JSONArray.
- * @throws NullPointerException If the key is <code>null</code>.
- */
- 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.", e);
- }
- }
-
- /**
- * 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);
- if (object instanceof BigDecimal) {
- return (BigDecimal) object;
- }
- try {
- return new BigDecimal(object.toString());
- } catch (Exception e) {
- throw new JSONException("JSONObject[" + quote(key) + "] could not be converted to BigDecimal.", e);
- }
- }
-
- /**
- * 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(object.toString());
- } catch (Exception e) {
- throw new JSONException("JSONObject[" + quote(key) + "] is not a number.", e);
- }
- }
-
- /**
- * Get the float 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 float getFloat(String key) throws JSONException {
- Object object = this.get(key);
- try {
- return object instanceof Number ? ((Number) object).floatValue() : Float.parseFloat(object.toString());
- } catch (Exception e) {
- throw new JSONException("JSONObject[" + quote(key) + "] is not a number.", e);
- }
- }
-
- /**
- * Get the Number 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 Number getNumber(String key) throws JSONException {
- Object object = this.get(key);
- try {
- if (object instanceof Number) {
- return (Number) object;
- }
- return stringToNumber(object.toString());
- } catch (Exception e) {
- throw new JSONException("JSONObject[" + quote(key) + "] is not a number.", e);
- }
- }
-
- /**
- * 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.", e);
- }
- }
-
- /**
- * 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.", e);
- }
- }
-
- /**
- * 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) {
- if (jo.isEmpty()) {
- return null;
- }
- return jo.keySet().toArray(new String[jo.length()]);
- }
-
- /**
- * 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).intValue() + 1);
- } else if (value instanceof Long) {
- this.put(key, ((Long) value).longValue() + 1L);
- } else if (value instanceof Double) {
- this.put(key, ((Double) value).doubleValue() + 1.0d);
- } else if (value instanceof Float) {
- this.put(key, ((Float) value).floatValue() + 1.0f);
- } else {
- throw new JSONException("Unable to increment [" + quote(key) + "].");
- }
- return this;
- }
-
- /**
- * Determine if the value associated with the key is <code>null</code> 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. Modifying this key Set will
- * also modify the JSONObject. Use with caution.
- *
- * @see Set#iterator()
- *
- * @return An iterator of the keys.
- */
- public Iterator<String> keys() {
- return this.keySet().iterator();
- }
-
- /**
- * Get a set of keys of the JSONObject. Modifying this key Set will also modify
- * the JSONObject. Use with caution.
- *
- * @see Map#keySet()
- *
- * @return A keySet.
- */
- public Set<String> keySet() {
- return this.map.keySet();
- }
-
- /**
- * Get a set of entries of the JSONObject. These are raw values and may not
- * match what is returned by the JSONObject get* and opt* functions. Modifying
- * the returned EntrySet or the Entry objects contained therein will modify the
- * backing JSONObject. This does not return a clone or a read-only view.
- *
- * Use with caution.
- *
- * @see Map#entrySet()
- *
- * @return An Entry Set
- */
- protected Set<Entry<String, Object>> entrySet() {
- return this.map.entrySet();
- }
-
- /**
- * Get the number of keys stored in the JSONObject.
- *
- * @return The number of keys in the JSONObject.
- */
- public int length() {
- return this.map.size();
- }
-
- /**
- * Check if JSONObject is empty.
- *
- * @return true if JSONObject is empty, otherwise false.
- */
- public boolean isEmpty() {
- return map.isEmpty();
- }
-
- /**
- * 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() {
- if (this.map.isEmpty()) {
- return null;
- }
- return new JSONArray(this.map.keySet());
- }
-
- /**
- * 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 <code>clazz</code>
- */
- 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) {
- Object val = this.opt(key);
- if (NULL.equals(val)) {
- return defaultValue;
- }
- if (val instanceof Boolean) {
- return ((Boolean) val).booleanValue();
- }
- try {
- // we'll use the get anyway because it does string conversion.
- return this.getBoolean(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) {
- Object val = this.opt(key);
- if (NULL.equals(val)) {
- return defaultValue;
- }
- if (val instanceof BigDecimal) {
- return (BigDecimal) val;
- }
- if (val instanceof BigInteger) {
- return new BigDecimal((BigInteger) val);
- }
- if (val instanceof Double || val instanceof Float) {
- return new BigDecimal(((Number) val).doubleValue());
- }
- if (val instanceof Long || val instanceof Integer || val instanceof Short || val instanceof Byte) {
- return new BigDecimal(((Number) val).longValue());
- }
- // don't check if it's a string in case of unchecked Number subclasses
- try {
- return new BigDecimal(val.toString());
- } catch (Exception e) {
- return defaultValue;
- }
- }
-
- /**
- * 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) {
- Object val = this.opt(key);
- if (NULL.equals(val)) {
- return defaultValue;
- }
- if (val instanceof BigInteger) {
- return (BigInteger) val;
- }
- if (val instanceof BigDecimal) {
- return ((BigDecimal) val).toBigInteger();
- }
- if (val instanceof Double || val instanceof Float) {
- return new BigDecimal(((Number) val).doubleValue()).toBigInteger();
- }
- if (val instanceof Long || val instanceof Integer || val instanceof Short || val instanceof Byte) {
- return BigInteger.valueOf(((Number) val).longValue());
- }
- // don't check if it's a string in case of unchecked Number subclasses
- try {
- // the other opt functions handle implicit conversions, i.e.
- // jo.put("double",1.1d);
- // jo.optInt("double"); -- will return 1, not an error
- // this conversion to BigDecimal then to BigInteger is to maintain
- // that type cast support that may truncate the decimal.
- final String valStr = val.toString();
- if (isDecimalNotation(valStr)) {
- return new BigDecimal(valStr).toBigInteger();
- }
- return new BigInteger(valStr);
- } 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) {
- Object val = this.opt(key);
- if (NULL.equals(val)) {
- return defaultValue;
- }
- if (val instanceof Number) {
- return ((Number) val).doubleValue();
- }
- if (val instanceof String) {
- try {
- return Double.parseDouble((String) val);
- } catch (Exception e) {
- return defaultValue;
- }
- }
- return defaultValue;
- }
-
- /**
- * Get the optional double value associated with an index. NaN is returned if
- * there is no value for the index, or if the value is not a number and cannot
- * be converted to a number.
- *
- * @param key A key string.
- * @return The value.
- */
- public float optFloat(String key) {
- return this.optFloat(key, Float.NaN);
- }
-
- /**
- * Get the optional double value associated with an index. The defaultValue is
- * returned if there is no value for the index, or if the value is not a number
- * and cannot be converted to a number.
- *
- * @param key A key string.
- * @param defaultValue The default value.
- * @return The value.
- */
- public float optFloat(String key, float defaultValue) {
- Object val = this.opt(key);
- if (JSONObject.NULL.equals(val)) {
- return defaultValue;
- }
- if (val instanceof Number) {
- return ((Number) val).floatValue();
- }
- if (val instanceof String) {
- try {
- return Float.parseFloat((String) val);
- } catch (Exception e) {
- return defaultValue;
- }
- }
- 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) {
- Object val = this.opt(key);
- if (NULL.equals(val)) {
- return defaultValue;
- }
- if (val instanceof Number) {
- return ((Number) val).intValue();
- }
-
- if (val instanceof String) {
- try {
- return new BigDecimal((String) val).intValue();
- } catch (Exception e) {
- return defaultValue;
- }
- }
- 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) {
- Object val = this.opt(key);
- if (NULL.equals(val)) {
- return defaultValue;
- }
- if (val instanceof Number) {
- return ((Number) val).longValue();
- }
-
- if (val instanceof String) {
- try {
- return new BigDecimal((String) val).longValue();
- } catch (Exception e) {
- return defaultValue;
- }
- }
- return defaultValue;
- }
-
- /**
- * Get an optional {@link Number} value associated with a key, or
- * <code>null</code> 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
- * ({@link BigDecimal}). This method would be used in cases where type coercion
- * of the number value is unwanted.
- *
- * @param key A key string.
- * @return An object which is the value.
- */
- public Number optNumber(String key) {
- return this.optNumber(key, null);
- }
-
- /**
- * Get an optional {@link Number} 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. This method would
- * be used in cases where type coercion of the number value is unwanted.
- *
- * @param key A key string.
- * @param defaultValue The default.
- * @return An object which is the value.
- */
- public Number optNumber(String key, Number defaultValue) {
- Object val = this.opt(key);
- if (NULL.equals(val)) {
- return defaultValue;
- }
- if (val instanceof Number) {
- return (Number) val;
- }
-
- if (val instanceof String) {
- try {
- return stringToNumber((String) val);
- } catch (Exception e) {
- return defaultValue;
- }
- }
- 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();
- }
-
- /**
- * Populates the internal map of the JSONObject with the bean properties. The
- * bean can not be recursive.
- *
- * @see JSONObject#JSONObject(Object)
- *
- * @param bean the bean
- */
- 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 (final Method method : methods) {
- final int modifiers = method.getModifiers();
- if (Modifier.isPublic(modifiers) && !Modifier.isStatic(modifiers) && method.getParameterTypes().length == 0
- && !method.isBridge() && method.getReturnType() != Void.TYPE
- && isValidMethodName(method.getName())) {
- final String key = getKeyNameFromMethod(method);
- if (key != null && !key.isEmpty()) {
- try {
- final Object result = method.invoke(bean);
- if (result != null) {
- this.map.put(key, wrap(result));
- // we don't use the result anywhere outside of wrap
- // if it's a resource we should be sure to close it
- // after calling toString
- if (result instanceof Closeable) {
- try {
- ((Closeable) result).close();
- } catch (IOException ignore) {
- }
- }
- }
- } catch (IllegalAccessException ignore) {
- } catch (IllegalArgumentException ignore) {
- } catch (InvocationTargetException ignore) {
- }
- }
- }
- }
- }
-
- private boolean isValidMethodName(String name) {
- return !"getClass".equals(name) && !"getDeclaringClass".equals(name);
- }
-
- private String getKeyNameFromMethod(Method method) {
- final int ignoreDepth = -1;// getAnnotationDepth(method, JSONPropertyIgnore.class);
-// if (ignoreDepth > 0) {
-// final int forcedNameDepth = getAnnotationDepth(method, JSONPropertyName.class);
-// if (forcedNameDepth < 0 || ignoreDepth <= forcedNameDepth) {
-// // the hierarchy asked to ignore, and the nearest name override
-// // was higher or non-existent
-// return null;
-// }
-// }
-// JSONPropertyName annotation = getAnnotation(method, JSONPropertyName.class);
-// if (annotation != null && annotation.value() != null && !annotation.value().isEmpty()) {
-// return annotation.value();
-// }
- String key;
- final String name = method.getName();
- if (name.startsWith("get") && name.length() > 3) {
- key = name.substring(3);
- } else if (name.startsWith("is") && name.length() > 2) {
- key = name.substring(2);
- } else {
- return null;
- }
- // if the first letter in the key is not uppercase, then skip.
- // This is to maintain backwards compatibility before PR406
- // (https://github.com/stleary/JSON-java/pull/406/)
- if (Character.isLowerCase(key.charAt(0))) {
- return null;
- }
- if (key.length() == 1) {
- key = key.toLowerCase(Locale.ROOT);
- } else if (!Character.isUpperCase(key.charAt(1))) {
- key = key.substring(0, 1).toLowerCase(Locale.ROOT) + key.substring(1);
- }
- return (/** @j2sNative 1 ? key.split("$")[0] : */
- key);
- }
-
-// /**
-// * Searches the class hierarchy to see if the method or it's super
-// * implementations and interfaces has the annotation.
-// *
-// * @param <A>
-// * type of the annotation
-// *
-// * @param m
-// * method to check
-// * @param annotationClass
-// * annotation to look for
-// * @return the {@link Annotation} if the annotation exists on the current method
-// * or one of it's super class definitions
-// */
-// private static <A extends Annotation> A getAnnotation(final Method m, final Class<A> annotationClass) {
-// return null;
-// // if we have invalid data the result is null
-// if (true || m == null || annotationClass == null) {
-// return null;
-// }
-//
-// if (m.isAnnotationPresent(annotationClass)) {
-// return m.getAnnotation(annotationClass);
-// }
-//
-// // if we've already reached the Object class, return null;
-// Class<?> c = m.getDeclaringClass();
-// if (c.getSuperclass() == null) {
-// return null;
-// }
-//
-// // check directly implemented interfaces for the method being checked
-// for (Class<?> i : c.getInterfaces()) {
-// try {
-// Method im = i.getMethod(m.getName(), m.getParameterTypes());
-// return getAnnotation(im, annotationClass);
-// } catch (final SecurityException ex) {
-// continue;
-// } catch (final NoSuchMethodException ex) {
-// continue;
-// }
-// }
-//
-// try {
-// return getAnnotation(
-// c.getSuperclass().getMethod(m.getName(), m.getParameterTypes()),
-// annotationClass);
-// } catch (final SecurityException ex) {
-// return null;
-// } catch (final NoSuchMethodException ex) {
-// return null;
-// }
-// }
-//
-// /**
-// * Searches the class hierarchy to see if the method or it's super
-// * implementations and interfaces has the annotation. Returns the depth of the
-// * annotation in the hierarchy.
-// *
-// * @param <A>
-// * type of the annotation
-// *
-// * @param m
-// * method to check
-// * @param annotationClass
-// * annotation to look for
-// * @return Depth of the annotation or -1 if the annotation is not on the method.
-// */
-// private static int getAnnotationDepth(final Method m, final Class<? extends Annotation> annotationClass) {
-// // if we have invalid data the result is -1
-// if (m == null || annotationClass == null) {
-// return -1;
-// }
-// if (m.isAnnotationPresent(annotationClass)) {
-// return 1;
-// }
-//
-// // if we've already reached the Object class, return -1;
-// Class<?> c = m.getDeclaringClass();
-// if (c.getSuperclass() == null) {
-// return -1;
-// }
-//
-// // check directly implemented interfaces for the method being checked
-// for (Class<?> i : c.getInterfaces()) {
-// try {
-// Method im = i.getMethod(m.getName(), m.getParameterTypes());
-// int d = getAnnotationDepth(im, annotationClass);
-// if (d > 0) {
-// // since the annotation was on the interface, add 1
-// return d + 1;
-// }
-// } catch (final SecurityException ex) {
-// continue;
-// } catch (final NoSuchMethodException ex) {
-// continue;
-// }
-// }
-//
-// try {
-// int d = getAnnotationDepth(
-// c.getSuperclass().getMethod(m.getName(), m.getParameterTypes()),
-// annotationClass);
-// if (d > 0) {
-// // since the annotation was on the superclass, add 1
-// return d + 1;
-// }
-// return -1;
-// } catch (final SecurityException ex) {
-// return -1;
-// } catch (final NoSuchMethodException ex) {
-// return -1;
-// }
-// }
-
- /**
- * 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 value is non-finite number.
- * @throws NullPointerException If the key is <code>null</code>.
- */
- public JSONObject put(String key, boolean value) throws JSONException {
- return this.put(key, value ? Boolean.TRUE : Boolean.FALSE);
- }
-
- /**
- * 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 If the value is non-finite number.
- * @throws NullPointerException If the key is <code>null</code>.
- */
- public JSONObject put(String key, Collection<?> value) throws JSONException {
- return this.put(key, new JSONArray(value));
- }
-
- /**
- * 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 value is non-finite number.
- * @throws NullPointerException If the key is <code>null</code>.
- */
- public JSONObject put(String key, double value) throws JSONException {
- return this.put(key, Double.valueOf(value));
- }
-
- /**
- * Put a key/float pair in the JSONObject.
- *
- * @param key A key string.
- * @param value A float which is the value.
- * @return this.
- * @throws JSONException If the value is non-finite number.
- * @throws NullPointerException If the key is <code>null</code>.
- */
- public JSONObject put(String key, float value) throws JSONException {
- return this.put(key, Float.valueOf(value));
- }
-
- /**
- * 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 value is non-finite number.
- * @throws NullPointerException If the key is <code>null</code>.
- */
- public JSONObject put(String key, int value) throws JSONException {
- return this.put(key, Integer.valueOf(value));
- }
-
- /**
- * 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 value is non-finite number.
- * @throws NullPointerException If the key is <code>null</code>.
- */
- public JSONObject put(String key, long value) throws JSONException {
- return this.put(key, Long.valueOf(value));
- }
-
- /**
- * 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 If the value is non-finite number.
- * @throws NullPointerException If the key is <code>null</code>.
- */
- public JSONObject put(String key, Map<?, ?> value) throws JSONException {
- return this.put(key, new JSONObject(value));
- }
-
- /**
- * Put a key/value pair in the JSONObject. If the value is <code>null</code>,
- * 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.
- * @throws NullPointerException If the key is <code>null</code>.
- */
- 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 + "\"");
- }
- return 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) {
- return this.put(key, value);
- }
- return this;
- }
-
- /**
- * Creates a JSONPointer using an initialization 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 query(new JSONPointer(jsonPointer));
- }
-
- /**
- * Uses a user initialized JSONPointer 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:
- *
- * <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(JSONPointer jsonPointer) {
- return 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) {
- return optQuery(new JSONPointer(jsonPointer));
- }
-
- /**
- * 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 JSON pointer
- * @return the queried value or {@code null}
- * @throws IllegalArgumentException if {@code jsonPointer} has invalid syntax
- */
- public Object optQuery(JSONPointer jsonPointer) {
- try {
- return jsonPointer.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.isEmpty()) {
- 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;
- }
- if (!this.keySet().equals(((JSONObject) other).keySet())) {
- return false;
- }
- for (final Entry<String, ?> entry : this.entrySet()) {
- String name = entry.getKey();
- Object valueThis = entry.getValue();
- Object valueOther = ((JSONObject) other).get(name);
- if (valueThis == valueOther) {
- continue;
- }
- if (valueThis == null) {
- return false;
- }
- 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;
- }
- }
-
- /**
- * Tests if the value should be tried as a decimal. It makes no test if there
- * are actual digits.
- *
- * @param val value to test
- * @return true if the string is "-0" or if it contains '.', 'e', or 'E', false
- * otherwise.
- */
- protected static boolean isDecimalNotation(final String val) {
- return val.indexOf('.') > -1 || val.indexOf('e') > -1 || val.indexOf('E') > -1 || "-0".equals(val);
- }
-
- /**
- * Converts a string to a number using the narrowest possible type. Possible
- * returns for this function are BigDecimal, Double, BigInteger, Long, and
- * Integer. When a Double is returned, it should always be a valid Double and
- * not NaN or +-infinity.
- *
- * @param val value to convert
- * @return Number representation of the value.
- * @throws NumberFormatException thrown if the value is not a valid number. A
- * public caller should catch this and wrap it in
- * a {@link JSONException} if applicable.
- */
- protected static Number stringToNumber(final String val) throws NumberFormatException {
- char initial = val.charAt(0);
- if ((initial >= '0' && initial <= '9') || initial == '-') {
- // decimal representation
- if (isDecimalNotation(val)) {
- // quick dirty way to see if we need a BigDecimal instead of a Double
- // this only handles some cases of overflow or underflow
- if (val.length() > 14) {
- return new BigDecimal(val);
- }
- final Double d = Double.valueOf(val);
- if (d.isInfinite() || d.isNaN()) {
- // if we can't parse it as a double, go up to BigDecimal
- // this is probably due to underflow like 4.32e-678
- // or overflow like 4.65e5324. The size of the string is small
- // but can't be held in a Double.
- return new BigDecimal(val);
- }
- return d;
- }
- // integer representation.
- // This will narrow any values to the smallest reasonable Object representation
- // (Integer, Long, or BigInteger)
-
- // string version
- // The compare string length method reduces GC,
- // but leads to smaller integers being placed in larger wrappers even though not
- // needed. i.e. 1,000,000,000 -> Long even though it's an Integer
- // 1,000,000,000,000,000,000 -> BigInteger even though it's a Long
- // if(val.length()<=9){
- // return Integer.valueOf(val);
- // }
- // if(val.length()<=18){
- // return Long.valueOf(val);
- // }
- // return new BigInteger(val);
-
- // BigInteger version: We use a similar bitLenth compare as
- // BigInteger#intValueExact uses. Increases GC, but objects hold
- // only what they need. i.e. Less runtime overhead if the value is
- // long lived. Which is the better tradeoff? This is closer to what's
- // in stringToValue.
- BigInteger bi = new BigInteger(val);
- if (bi.bitLength() <= 31) {
- return Integer.valueOf(bi.intValue());
- }
- if (bi.bitLength() <= 63) {
- return Long.valueOf(bi.longValue());
- }
- return bi;
- }
- throw new NumberFormatException("val [" + val + "] is not a valid number.");
- }
-
- /**
- * 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.
- */
- // Changes to this method must be copied to the corresponding method in
- // the XML class to keep full support for Android
- 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 we want full Big Number support this block can be replaced with:
- // return stringToNumber(string);
- if (isDecimalNotation(string)) {
- Double d = Double.valueOf(string);
- if (!d.isInfinite() && !d.isNaN()) {
- return d;
- }
- } else {
- Long myLong = Long.valueOf(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.isEmpty()) {
- 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>
- * <b> Warning: This method assumes that the data structure is acyclical. </b>
- *
- * @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>.
- */
- @Override
- public String toString() {
- try {
- return this.toString(0);
- } catch (Exception e) {
- return null;
- }
- }
-
- /**
- * Make a pretty-printed JSON text of this JSONObject.
- *
- * <p>
- * If <code>indentFactor > 0</code> and the {@link JSONObject} has only one key,
- * then the object will be output on a single line:
- *
- * <pre>
- * {@code {"key": 1}}
- * </pre>
- *
- * <p>
- * If an object has 2 or more keys, then it will be output across multiple
- * lines: <code><pre>{
- * "key1": 1,
- * "key2": "value 2",
- * "key3": 3
- * }</pre></code>
- * <p>
- * <b> Warning: This method assumes that the data structure is acyclical. </b>
- *
- * @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 {
- // moves the implementation to JSONWriter as:
- // 1. It makes more sense to be part of the writer class
- // 2. For Android support this method is not available. By implementing it in
- // the Writer
- // Android users can use the writer with the built in Android JSONObject
- // implementation.
- return JSONWriter.valueToString(value);
- }
-
- /**
- * Wrap an object, if necessary. If the object is <code>null</code>, 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
- || object instanceof Enum) {
- 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>
- * <b> Warning: This method assumes that the data structure is acyclical. </b>
- *
- * @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 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 if (value instanceof Number) {
- // not all Numbers may match actual JSON Numbers. i.e. fractions or Imaginary
- final String numberAsString = numberToString((Number) value);
- try {
- // Use the BigDecimal constructor for its parser to validate the format.
- @SuppressWarnings("unused")
- BigDecimal testNum = new BigDecimal(numberAsString);
- // Close enough to a JSON number that we will use it unquoted
- writer.write(numberAsString);
- } catch (NumberFormatException ex) {
- // The Number value is not a valid JSON number.
- // Instead we will quote it as a string
- quote(numberAsString, writer);
- }
- } else if (value instanceof Boolean) {
- writer.write(value.toString());
- } else if (value instanceof Enum<?>) {
- writer.write(quote(((Enum<?>) value).name()));
- } 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 {
- 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.
- *
- * <p>
- * If <code>indentFactor > 0</code> and the {@link JSONObject} has only one key,
- * then the object will be output on a single line:
- *
- * <pre>
- * {@code {"key": 1}}
- * </pre>
- *
- * <p>
- * If an object has 2 or more keys, then it will be output across multiple
- * lines: <code><pre>{
- * "key1": 1,
- * "key2": "value 2",
- * "key3": 3
- * }</pre></code>
- * <p>
- * <b> Warning: This method assumes that the data structure is acyclical. </b>
- *
- * @param writer Writes the serialized JSON
- * @param indentFactor The number of spaces to add to each level of indentation.
- * @param indent The indentation 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();
- writer.write('{');
-
- if (length == 1) {
- final Entry<String, ?> entry = this.entrySet().iterator().next();
- final String key = entry.getKey();
- writer.write(quote(key));
- writer.write(':');
- if (indentFactor > 0) {
- writer.write(' ');
- }
- try {
- writeValue(writer, entry.getValue(), indentFactor, indent);
- } catch (Exception e) {
- throw new JSONException("Unable to write JSONObject value for key: " + key, e);
- }
- } else if (length != 0) {
- final int newindent = indent + indentFactor;
- for (final Entry<String, ?> entry : this.entrySet()) {
- if (commanate) {
- writer.write(',');
- }
- if (indentFactor > 0) {
- writer.write('\n');
- }
- indent(writer, newindent);
- final String key = entry.getKey();
- writer.write(quote(key));
- writer.write(':');
- if (indentFactor > 0) {
- writer.write(' ');
- }
- try {
- writeValue(writer, entry.getValue(), indentFactor, newindent);
- } catch (Exception e) {
- throw new JSONException("Unable to write JSONObject value for key: " + key, e);
- }
- 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 entries 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 entries of this object
- */
- public Map<String, Object> toMap() {
- Map<String, Object> results = new HashMap<String, Object>();
- for (Entry<String, Object> entry : this.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;
- }
+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;
+ }
+
+ /**
+ * A Null object is equal to the null value and to itself.
+ *
+ * @return always returns 0.
+ */
+ @Override
+ public int hashCode()
+ {
+ return 0;
+ }
+
+ /**
+ * Get the "null" string value.
+ *
+ * @return The string "null".
+ */
+ @Override
+ 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()
+ {
+ // HashMap is used on purpose to ensure that elements are unordered by
+ // the specification.
+ // JSON tends to be a portable transfer format to allows the container
+ // implementations to rearrange their items for a faster element
+ // retrieval based on associative access.
+ // Therefore, an implementation mustn't rely on the order of the item.
+ 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(names.length);
+ 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");
+ }
+
+ // Use syntaxError(..) to include error location
+
+ if (key != null)
+ {
+ // Check if key exists
+ if (this.opt(key) != null)
+ {
+ // key already exists
+ throw x.syntaxError("Duplicate key \"" + key + "\"");
+ }
+ // Only add value if non-null
+ Object value = x.nextValue();
+ if (value != null)
+ {
+ this.put(key, value);
+ }
+ }
+
+ // 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 m
+ * A map object that can be used to initialize the contents of the
+ * JSONObject.
+ * @throws JSONException
+ * If a value in the map is non-finite number.
+ * @throws NullPointerException
+ * If a key in the map is <code>null</code>
+ */
+ public JSONObject(Map<?, ?> m)
+ {
+ if (m == null)
+ {
+ this.map = new HashMap<String, Object>();
+ }
+ else
+ {
+ this.map = new HashMap<String, Object>(m.size());
+ for (final Entry<?, ?> e : m.entrySet())
+ {
+ if (e.getKey() == null)
+ {
+ throw new NullPointerException("Null key.");
+ }
+ 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.
+ * <p>
+ * 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.
+ * <p>
+ * Methods that are <code>static</code>, return <code>void</code>, have
+ * parameters, or are "bridge" methods, are ignored.
+ * <p>
+ * 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>.
+ * <p>
+ * The {@link JSONPropertyName} annotation can be used on a bean getter to
+ * override key name used in the JSONObject. For example, using the object
+ * above with the <code>getName</code> method, if we annotated it with:
+ *
+ * <pre>
+ * @JSONPropertyName("FullName")
+ * public String getName()
+ * {
+ * return this.name;
+ * }
+ * </pre>
+ *
+ * The resulting JSON object would contain
+ * <code>"FullName": "Larry Fine"</code>
+ * <p>
+ * Similarly, the {@link JSONPropertyName} annotation can be used on non-
+ * <code>get</code> and <code>is</code> methods. We can also override key name
+ * used in the JSONObject as seen below even though the field would normally
+ * be ignored:
+ *
+ * <pre>
+ * @JSONPropertyName("FullName")
+ * public String fullName()
+ * {
+ * return this.name;
+ * }
+ * </pre>
+ *
+ * The resulting JSON object would contain
+ * <code>"FullName": "Larry Fine"</code>
+ * <p>
+ * The {@link JSONPropertyIgnore} annotation can be used to force the bean
+ * property to not be serialized into JSON. If both {@link JSONPropertyIgnore}
+ * and {@link JSONPropertyName} are defined on the same method, a depth
+ * comparison is performed and the one closest to the concrete class being
+ * serialized is used. If both annotations are at the same level, then the
+ * {@link JSONPropertyIgnore} annotation takes precedent and the field is not
+ * serialized. For example, the following declaration would prevent the
+ * <code>getName</code> method from being serialized:
+ *
+ * <pre>
+ * @JSONPropertyName("FullName")
+ * @JSONPropertyIgnore
+ * public String getName()
+ * {
+ * return this.name;
+ * }
+ * </pre>
+ * <p>
+ *
+ * @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(names.length);
+ 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));
+ }
+ }
+ }
+
+ /**
+ * Constructor to specify an initial capacity of the internal map. Useful for
+ * library internal calls where we know, or at least can best guess, how big
+ * this JSONObject will be.
+ *
+ * @param initialCapacity
+ * initial capacity of the internal map.
+ */
+ protected JSONObject(int initialCapacity)
+ {
+ this.map = new HashMap<String, Object>(initialCapacity);
+ }
+
+ /**
+ * 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 non-finite number.
+ * @throws NullPointerException
+ * If the key is <code>null</code>.
+ */
+ 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 value is non-finite number or if the current value
+ * associated with the key is not a JSONArray.
+ * @throws NullPointerException
+ * If the key is <code>null</code>.
+ */
+ 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.", e);
+ }
+ }
+
+ /**
+ * 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);
+ if (object instanceof BigDecimal)
+ {
+ return (BigDecimal) object;
+ }
+ try
+ {
+ return new BigDecimal(object.toString());
+ } catch (Exception e)
+ {
+ throw new JSONException("JSONObject[" + quote(key)
+ + "] could not be converted to BigDecimal.", e);
+ }
+ }
+
+ /**
+ * 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(object.toString());
+ } catch (Exception e)
+ {
+ throw new JSONException(
+ "JSONObject[" + quote(key) + "] is not a number.", e);
+ }
+ }
+
+ /**
+ * Get the float 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 float getFloat(String key) throws JSONException
+ {
+ Object object = this.get(key);
+ try
+ {
+ return object instanceof Number ? ((Number) object).floatValue()
+ : Float.parseFloat(object.toString());
+ } catch (Exception e)
+ {
+ throw new JSONException(
+ "JSONObject[" + quote(key) + "] is not a number.", e);
+ }
+ }
+
+ /**
+ * Get the Number 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 Number getNumber(String key) throws JSONException
+ {
+ Object object = this.get(key);
+ try
+ {
+ if (object instanceof Number)
+ {
+ return (Number) object;
+ }
+ return stringToNumber(object.toString());
+ } catch (Exception e)
+ {
+ throw new JSONException(
+ "JSONObject[" + quote(key) + "] is not a number.", e);
+ }
+ }
+
+ /**
+ * 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.", e);
+ }
+ }
+
+ /**
+ * 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.", e);
+ }
+ }
+
+ /**
+ * 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)
+ {
+ if (jo.isEmpty())
+ {
+ return null;
+ }
+ return jo.keySet().toArray(new String[jo.length()]);
+ }
+
+ /**
+ * 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).intValue() + 1);
+ }
+ else if (value instanceof Long)
+ {
+ this.put(key, ((Long) value).longValue() + 1L);
+ }
+ else if (value instanceof Double)
+ {
+ this.put(key, ((Double) value).doubleValue() + 1.0d);
+ }
+ else if (value instanceof Float)
+ {
+ this.put(key, ((Float) value).floatValue() + 1.0f);
+ }
+ else
+ {
+ throw new JSONException("Unable to increment [" + quote(key) + "].");
+ }
+ return this;
+ }
+
+ /**
+ * Determine if the value associated with the key is <code>null</code> 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. Modifying this key Set
+ * will also modify the JSONObject. Use with caution.
+ *
+ * @see Set#iterator()
+ *
+ * @return An iterator of the keys.
+ */
+ public Iterator<String> keys()
+ {
+ return this.keySet().iterator();
+ }
+
+ /**
+ * Get a set of keys of the JSONObject. Modifying this key Set will also
+ * modify the JSONObject. Use with caution.
+ *
+ * @see Map#keySet()
+ *
+ * @return A keySet.
+ */
+ public Set<String> keySet()
+ {
+ return this.map.keySet();
+ }
+
+ /**
+ * Get a set of entries of the JSONObject. These are raw values and may not
+ * match what is returned by the JSONObject get* and opt* functions. Modifying
+ * the returned EntrySet or the Entry objects contained therein will modify
+ * the backing JSONObject. This does not return a clone or a read-only view.
+ *
+ * Use with caution.
+ *
+ * @see Map#entrySet()
+ *
+ * @return An Entry Set
+ */
+ protected Set<Entry<String, Object>> entrySet()
+ {
+ return this.map.entrySet();
+ }
+
+ /**
+ * Get the number of keys stored in the JSONObject.
+ *
+ * @return The number of keys in the JSONObject.
+ */
+ public int length()
+ {
+ return this.map.size();
+ }
+
+ /**
+ * Check if JSONObject is empty.
+ *
+ * @return true if JSONObject is empty, otherwise false.
+ */
+ public boolean isEmpty()
+ {
+ return map.isEmpty();
+ }
+
+ /**
+ * 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()
+ {
+ if (this.map.isEmpty())
+ {
+ return null;
+ }
+ return new JSONArray(this.map.keySet());
+ }
+
+ /**
+ * 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 <code>clazz</code>
+ */
+ 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)
+ {
+ Object val = this.opt(key);
+ if (NULL.equals(val))
+ {
+ return defaultValue;
+ }
+ if (val instanceof Boolean)
+ {
+ return ((Boolean) val).booleanValue();
+ }
+ try
+ {
+ // we'll use the get anyway because it does string conversion.
+ return this.getBoolean(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)
+ {
+ Object val = this.opt(key);
+ if (NULL.equals(val))
+ {
+ return defaultValue;
+ }
+ if (val instanceof BigDecimal)
+ {
+ return (BigDecimal) val;
+ }
+ if (val instanceof BigInteger)
+ {
+ return new BigDecimal((BigInteger) val);
+ }
+ if (val instanceof Double || val instanceof Float)
+ {
+ return new BigDecimal(((Number) val).doubleValue());
+ }
+ if (val instanceof Long || val instanceof Integer
+ || val instanceof Short || val instanceof Byte)
+ {
+ return new BigDecimal(((Number) val).longValue());
+ }
+ // don't check if it's a string in case of unchecked Number subclasses
+ try
+ {
+ return new BigDecimal(val.toString());
+ } catch (Exception e)
+ {
+ return defaultValue;
+ }
+ }
+
+ /**
+ * 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)
+ {
+ Object val = this.opt(key);
+ if (NULL.equals(val))
+ {
+ return defaultValue;
+ }
+ if (val instanceof BigInteger)
+ {
+ return (BigInteger) val;
+ }
+ if (val instanceof BigDecimal)
+ {
+ return ((BigDecimal) val).toBigInteger();
+ }
+ if (val instanceof Double || val instanceof Float)
+ {
+ return new BigDecimal(((Number) val).doubleValue()).toBigInteger();
+ }
+ if (val instanceof Long || val instanceof Integer
+ || val instanceof Short || val instanceof Byte)
+ {
+ return BigInteger.valueOf(((Number) val).longValue());
+ }
+ // don't check if it's a string in case of unchecked Number subclasses
+ try
+ {
+ // the other opt functions handle implicit conversions, i.e.
+ // jo.put("double",1.1d);
+ // jo.optInt("double"); -- will return 1, not an error
+ // this conversion to BigDecimal then to BigInteger is to maintain
+ // that type cast support that may truncate the decimal.
+ final String valStr = val.toString();
+ if (isDecimalNotation(valStr))
+ {
+ return new BigDecimal(valStr).toBigInteger();
+ }
+ return new BigInteger(valStr);
+ } 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)
+ {
+ Object val = this.opt(key);
+ if (NULL.equals(val))
+ {
+ return defaultValue;
+ }
+ if (val instanceof Number)
+ {
+ return ((Number) val).doubleValue();
+ }
+ if (val instanceof String)
+ {
+ try
+ {
+ return Double.parseDouble((String) val);
+ } catch (Exception e)
+ {
+ return defaultValue;
+ }
+ }
+ return defaultValue;
+ }
+
+ /**
+ * Get the optional double value associated with an index. NaN is returned if
+ * there is no value for the index, or if the value is not a number and cannot
+ * be converted to a number.
+ *
+ * @param key
+ * A key string.
+ * @return The value.
+ */
+ public float optFloat(String key)
+ {
+ return this.optFloat(key, Float.NaN);
+ }
+
+ /**
+ * Get the optional double value associated with an index. The defaultValue is
+ * returned if there is no value for the index, or if the value is not a
+ * number and cannot be converted to a number.
+ *
+ * @param key
+ * A key string.
+ * @param defaultValue
+ * The default value.
+ * @return The value.
+ */
+ public float optFloat(String key, float defaultValue)
+ {
+ Object val = this.opt(key);
+ if (JSONObject.NULL.equals(val))
+ {
+ return defaultValue;
+ }
+ if (val instanceof Number)
+ {
+ return ((Number) val).floatValue();
+ }
+ if (val instanceof String)
+ {
+ try
+ {
+ return Float.parseFloat((String) val);
+ } catch (Exception e)
+ {
+ return defaultValue;
+ }
+ }
+ 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)
+ {
+ Object val = this.opt(key);
+ if (NULL.equals(val))
+ {
+ return defaultValue;
+ }
+ if (val instanceof Number)
+ {
+ return ((Number) val).intValue();
+ }
+
+ if (val instanceof String)
+ {
+ try
+ {
+ return new BigDecimal((String) val).intValue();
+ } catch (Exception e)
+ {
+ return defaultValue;
+ }
+ }
+ 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)
+ {
+ Object val = this.opt(key);
+ if (NULL.equals(val))
+ {
+ return defaultValue;
+ }
+ if (val instanceof Number)
+ {
+ return ((Number) val).longValue();
+ }
+
+ if (val instanceof String)
+ {
+ try
+ {
+ return new BigDecimal((String) val).longValue();
+ } catch (Exception e)
+ {
+ return defaultValue;
+ }
+ }
+ return defaultValue;
+ }
+
+ /**
+ * Get an optional {@link Number} value associated with a key, or
+ * <code>null</code> 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 ({@link BigDecimal}). This method would be used in cases where type
+ * coercion of the number value is unwanted.
+ *
+ * @param key
+ * A key string.
+ * @return An object which is the value.
+ */
+ public Number optNumber(String key)
+ {
+ return this.optNumber(key, null);
+ }
+
+ /**
+ * Get an optional {@link Number} 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. This method
+ * would be used in cases where type coercion of the number value is unwanted.
+ *
+ * @param key
+ * A key string.
+ * @param defaultValue
+ * The default.
+ * @return An object which is the value.
+ */
+ public Number optNumber(String key, Number defaultValue)
+ {
+ Object val = this.opt(key);
+ if (NULL.equals(val))
+ {
+ return defaultValue;
+ }
+ if (val instanceof Number)
+ {
+ return (Number) val;
+ }
+
+ if (val instanceof String)
+ {
+ try
+ {
+ return stringToNumber((String) val);
+ } catch (Exception e)
+ {
+ return defaultValue;
+ }
+ }
+ 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();
+ }
+
+ /**
+ * Populates the internal map of the JSONObject with the bean properties. The
+ * bean can not be recursive.
+ *
+ * @see JSONObject#JSONObject(Object)
+ *
+ * @param bean
+ * the bean
+ */
+ 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 (final Method method : methods)
+ {
+ final int modifiers = method.getModifiers();
+ if (Modifier.isPublic(modifiers) && !Modifier.isStatic(modifiers)
+ && method.getParameterTypes().length == 0
+ && !method.isBridge() && method.getReturnType() != Void.TYPE
+ && isValidMethodName(method.getName()))
+ {
+ final String key = getKeyNameFromMethod(method);
+ if (key != null && !key.isEmpty())
+ {
+ try
+ {
+ final Object result = method.invoke(bean);
+ if (result != null)
+ {
+ this.map.put(key, wrap(result));
+ // we don't use the result anywhere outside of wrap
+ // if it's a resource we should be sure to close it
+ // after calling toString
+ if (result instanceof Closeable)
+ {
+ try
+ {
+ ((Closeable) result).close();
+ } catch (IOException ignore)
+ {
+ }
+ }
+ }
+ } catch (IllegalAccessException ignore)
+ {
+ } catch (IllegalArgumentException ignore)
+ {
+ } catch (InvocationTargetException ignore)
+ {
+ }
+ }
+ }
+ }
+ }
+
+ private boolean isValidMethodName(String name)
+ {
+ return !"getClass".equals(name) && !"getDeclaringClass".equals(name);
+ }
+
+ private String getKeyNameFromMethod(Method method)
+ {
+ final int ignoreDepth = -1;// getAnnotationDepth(method,
+ // JSONPropertyIgnore.class);
+ // if (ignoreDepth > 0) {
+ // final int forcedNameDepth = getAnnotationDepth(method,
+ // JSONPropertyName.class);
+ // if (forcedNameDepth < 0 || ignoreDepth <= forcedNameDepth) {
+ // // the hierarchy asked to ignore, and the nearest name override
+ // // was higher or non-existent
+ // return null;
+ // }
+ // }
+ // JSONPropertyName annotation = getAnnotation(method,
+ // JSONPropertyName.class);
+ // if (annotation != null && annotation.value() != null &&
+ // !annotation.value().isEmpty()) {
+ // return annotation.value();
+ // }
+ String key;
+ final String name = method.getName();
+ if (name.startsWith("get") && name.length() > 3)
+ {
+ key = name.substring(3);
+ }
+ else if (name.startsWith("is") && name.length() > 2)
+ {
+ key = name.substring(2);
+ }
+ else
+ {
+ return null;
+ }
+ // if the first letter in the key is not uppercase, then skip.
+ // This is to maintain backwards compatibility before PR406
+ // (https://github.com/stleary/JSON-java/pull/406/)
+ if (Character.isLowerCase(key.charAt(0)))
+ {
+ return null;
+ }
+ if (key.length() == 1)
+ {
+ key = key.toLowerCase(Locale.ROOT);
+ }
+ else if (!Character.isUpperCase(key.charAt(1)))
+ {
+ key = key.substring(0, 1).toLowerCase(Locale.ROOT) + key.substring(1);
+ }
+ return (/** @j2sNative 1 ? key.split("$")[0] : */
+ key);
+ }
+
+ // /**
+ // * Searches the class hierarchy to see if the method or it's super
+ // * implementations and interfaces has the annotation.
+ // *
+ // * @param <A>
+ // * type of the annotation
+ // *
+ // * @param m
+ // * method to check
+ // * @param annotationClass
+ // * annotation to look for
+ // * @return the {@link Annotation} if the annotation exists on the current
+ // method
+ // * or one of it's super class definitions
+ // */
+ // private static <A extends Annotation> A getAnnotation(final Method m, final
+ // Class<A> annotationClass) {
+ // return null;
+ // // if we have invalid data the result is null
+ // if (true || m == null || annotationClass == null) {
+ // return null;
+ // }
+ //
+ // if (m.isAnnotationPresent(annotationClass)) {
+ // return m.getAnnotation(annotationClass);
+ // }
+ //
+ // // if we've already reached the Object class, return null;
+ // Class<?> c = m.getDeclaringClass();
+ // if (c.getSuperclass() == null) {
+ // return null;
+ // }
+ //
+ // // check directly implemented interfaces for the method being checked
+ // for (Class<?> i : c.getInterfaces()) {
+ // try {
+ // Method im = i.getMethod(m.getName(), m.getParameterTypes());
+ // return getAnnotation(im, annotationClass);
+ // } catch (final SecurityException ex) {
+ // continue;
+ // } catch (final NoSuchMethodException ex) {
+ // continue;
+ // }
+ // }
+ //
+ // try {
+ // return getAnnotation(
+ // c.getSuperclass().getMethod(m.getName(), m.getParameterTypes()),
+ // annotationClass);
+ // } catch (final SecurityException ex) {
+ // return null;
+ // } catch (final NoSuchMethodException ex) {
+ // return null;
+ // }
+ // }
+ //
+ // /**
+ // * Searches the class hierarchy to see if the method or it's super
+ // * implementations and interfaces has the annotation. Returns the depth of
+ // the
+ // * annotation in the hierarchy.
+ // *
+ // * @param <A>
+ // * type of the annotation
+ // *
+ // * @param m
+ // * method to check
+ // * @param annotationClass
+ // * annotation to look for
+ // * @return Depth of the annotation or -1 if the annotation is not on the
+ // method.
+ // */
+ // private static int getAnnotationDepth(final Method m, final Class<? extends
+ // Annotation> annotationClass) {
+ // // if we have invalid data the result is -1
+ // if (m == null || annotationClass == null) {
+ // return -1;
+ // }
+ // if (m.isAnnotationPresent(annotationClass)) {
+ // return 1;
+ // }
+ //
+ // // if we've already reached the Object class, return -1;
+ // Class<?> c = m.getDeclaringClass();
+ // if (c.getSuperclass() == null) {
+ // return -1;
+ // }
+ //
+ // // check directly implemented interfaces for the method being checked
+ // for (Class<?> i : c.getInterfaces()) {
+ // try {
+ // Method im = i.getMethod(m.getName(), m.getParameterTypes());
+ // int d = getAnnotationDepth(im, annotationClass);
+ // if (d > 0) {
+ // // since the annotation was on the interface, add 1
+ // return d + 1;
+ // }
+ // } catch (final SecurityException ex) {
+ // continue;
+ // } catch (final NoSuchMethodException ex) {
+ // continue;
+ // }
+ // }
+ //
+ // try {
+ // int d = getAnnotationDepth(
+ // c.getSuperclass().getMethod(m.getName(), m.getParameterTypes()),
+ // annotationClass);
+ // if (d > 0) {
+ // // since the annotation was on the superclass, add 1
+ // return d + 1;
+ // }
+ // return -1;
+ // } catch (final SecurityException ex) {
+ // return -1;
+ // } catch (final NoSuchMethodException ex) {
+ // return -1;
+ // }
+ // }
+
+ /**
+ * 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 value is non-finite number.
+ * @throws NullPointerException
+ * If the key is <code>null</code>.
+ */
+ public JSONObject put(String key, boolean value) throws JSONException
+ {
+ return this.put(key, value ? Boolean.TRUE : Boolean.FALSE);
+ }
+
+ /**
+ * 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
+ * If the value is non-finite number.
+ * @throws NullPointerException
+ * If the key is <code>null</code>.
+ */
+ public JSONObject put(String key, Collection<?> value)
+ throws JSONException
+ {
+ return this.put(key, new JSONArray(value));
+ }
+
+ /**
+ * 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 value is non-finite number.
+ * @throws NullPointerException
+ * If the key is <code>null</code>.
+ */
+ public JSONObject put(String key, double value) throws JSONException
+ {
+ return this.put(key, Double.valueOf(value));
+ }
+
+ /**
+ * Put a key/float pair in the JSONObject.
+ *
+ * @param key
+ * A key string.
+ * @param value
+ * A float which is the value.
+ * @return this.
+ * @throws JSONException
+ * If the value is non-finite number.
+ * @throws NullPointerException
+ * If the key is <code>null</code>.
+ */
+ public JSONObject put(String key, float value) throws JSONException
+ {
+ return this.put(key, Float.valueOf(value));
+ }
+
+ /**
+ * 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 value is non-finite number.
+ * @throws NullPointerException
+ * If the key is <code>null</code>.
+ */
+ public JSONObject put(String key, int value) throws JSONException
+ {
+ return this.put(key, Integer.valueOf(value));
+ }
+
+ /**
+ * 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 value is non-finite number.
+ * @throws NullPointerException
+ * If the key is <code>null</code>.
+ */
+ public JSONObject put(String key, long value) throws JSONException
+ {
+ return this.put(key, Long.valueOf(value));
+ }
+
+ /**
+ * 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
+ * If the value is non-finite number.
+ * @throws NullPointerException
+ * If the key is <code>null</code>.
+ */
+ public JSONObject put(String key, Map<?, ?> value) throws JSONException
+ {
+ return this.put(key, new JSONObject(value));
+ }
+
+ /**
+ * Put a key/value pair in the JSONObject. If the value is <code>null</code>,
+ * 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.
+ * @throws NullPointerException
+ * If the key is <code>null</code>.
+ */
+ 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 + "\"");
+ }
+ return 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)
+ {
+ return this.put(key, value);
+ }
+ return this;
+ }
+
+ /**
+ * Creates a JSONPointer using an initialization 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 query(new JSONPointer(jsonPointer));
+ }
+
+ /**
+ * Uses a user initialized JSONPointer 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:
+ *
+ * <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(JSONPointer jsonPointer)
+ {
+ return 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)
+ {
+ return optQuery(new JSONPointer(jsonPointer));
+ }
+
+ /**
+ * 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 JSON pointer
+ * @return the queried value or {@code null}
+ * @throws IllegalArgumentException
+ * if {@code jsonPointer} has invalid syntax
+ */
+ public Object optQuery(JSONPointer jsonPointer)
+ {
+ try
+ {
+ return jsonPointer.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.isEmpty())
+ {
+ 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;
+ }
+ if (!this.keySet().equals(((JSONObject) other).keySet()))
+ {
+ return false;
+ }
+ for (final Entry<String, ?> entry : this.entrySet())
+ {
+ String name = entry.getKey();
+ Object valueThis = entry.getValue();
+ Object valueOther = ((JSONObject) other).get(name);
+ if (valueThis == valueOther)
+ {
+ continue;
+ }
+ if (valueThis == null)
+ {
+ return false;
+ }
+ 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;
+ }
+ }
+
+ /**
+ * Tests if the value should be tried as a decimal. It makes no test if there
+ * are actual digits.
+ *
+ * @param val
+ * value to test
+ * @return true if the string is "-0" or if it contains '.', 'e', or 'E',
+ * false otherwise.
+ */
+ protected static boolean isDecimalNotation(final String val)
+ {
+ return val.indexOf('.') > -1 || val.indexOf('e') > -1
+ || val.indexOf('E') > -1 || "-0".equals(val);
+ }
+
+ /**
+ * Converts a string to a number using the narrowest possible type. Possible
+ * returns for this function are BigDecimal, Double, BigInteger, Long, and
+ * Integer. When a Double is returned, it should always be a valid Double and
+ * not NaN or +-infinity.
+ *
+ * @param val
+ * value to convert
+ * @return Number representation of the value.
+ * @throws NumberFormatException
+ * thrown if the value is not a valid number. A public caller should
+ * catch this and wrap it in a {@link JSONException} if applicable.
+ */
+ protected static Number stringToNumber(final String val)
+ throws NumberFormatException
+ {
+ char initial = val.charAt(0);
+ if ((initial >= '0' && initial <= '9') || initial == '-')
+ {
+ // decimal representation
+ if (isDecimalNotation(val))
+ {
+ // quick dirty way to see if we need a BigDecimal instead of a Double
+ // this only handles some cases of overflow or underflow
+ if (val.length() > 14)
+ {
+ return new BigDecimal(val);
+ }
+ final Double d = Double.valueOf(val);
+ if (d.isInfinite() || d.isNaN())
+ {
+ // if we can't parse it as a double, go up to BigDecimal
+ // this is probably due to underflow like 4.32e-678
+ // or overflow like 4.65e5324. The size of the string is small
+ // but can't be held in a Double.
+ return new BigDecimal(val);
+ }
+ return d;
+ }
+ // integer representation.
+ // This will narrow any values to the smallest reasonable Object
+ // representation
+ // (Integer, Long, or BigInteger)
+
+ // string version
+ // The compare string length method reduces GC,
+ // but leads to smaller integers being placed in larger wrappers even
+ // though not
+ // needed. i.e. 1,000,000,000 -> Long even though it's an Integer
+ // 1,000,000,000,000,000,000 -> BigInteger even though it's a Long
+ // if(val.length()<=9){
+ // return Integer.valueOf(val);
+ // }
+ // if(val.length()<=18){
+ // return Long.valueOf(val);
+ // }
+ // return new BigInteger(val);
+
+ // BigInteger version: We use a similar bitLenth compare as
+ // BigInteger#intValueExact uses. Increases GC, but objects hold
+ // only what they need. i.e. Less runtime overhead if the value is
+ // long lived. Which is the better tradeoff? This is closer to what's
+ // in stringToValue.
+ BigInteger bi = new BigInteger(val);
+ if (bi.bitLength() <= 31)
+ {
+ return Integer.valueOf(bi.intValue());
+ }
+ if (bi.bitLength() <= 63)
+ {
+ return Long.valueOf(bi.longValue());
+ }
+ return bi;
+ }
+ throw new NumberFormatException(
+ "val [" + val + "] is not a valid number.");
+ }
+
+ /**
+ * 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.
+ */
+ // Changes to this method must be copied to the corresponding method in
+ // the XML class to keep full support for Android
+ 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 we want full Big Number support this block can be replaced with:
+ // return stringToNumber(string);
+ if (isDecimalNotation(string))
+ {
+ Double d = Double.valueOf(string);
+ if (!d.isInfinite() && !d.isNaN())
+ {
+ return d;
+ }
+ }
+ else
+ {
+ Long myLong = Long.valueOf(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.isEmpty())
+ {
+ 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>
+ * <b> Warning: This method assumes that the data structure is acyclical. </b>
+ *
+ * @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>.
+ */
+ @Override
+ public String toString()
+ {
+ try
+ {
+ return this.toString(0);
+ } catch (Exception e)
+ {
+ return null;
+ }
+ }
+
+ /**
+ * Make a pretty-printed JSON text of this JSONObject.
+ *
+ * <p>
+ * If <code>indentFactor > 0</code> and the {@link JSONObject} has only one
+ * key, then the object will be output on a single line:
+ *
+ * <pre>
+ * {@code {"key": 1}}
+ * </pre>
+ *
+ * <p>
+ * If an object has 2 or more keys, then it will be output across multiple
+ * lines: <code><pre>{
+ * "key1": 1,
+ * "key2": "value 2",
+ * "key3": 3
+ * }</pre></code>
+ * <p>
+ * <b> Warning: This method assumes that the data structure is acyclical. </b>
+ *
+ * @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
+ {
+ // moves the implementation to JSONWriter as:
+ // 1. It makes more sense to be part of the writer class
+ // 2. For Android support this method is not available. By implementing it
+ // in
+ // the Writer
+ // Android users can use the writer with the built in Android JSONObject
+ // implementation.
+ return JSONWriter.valueToString(value);
+ }
+
+ /**
+ * Wrap an object, if necessary. If the object is <code>null</code>, 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 || object instanceof Enum)
+ {
+ 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>
+ * <b> Warning: This method assumes that the data structure is acyclical. </b>
+ *
+ * @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 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 if (value instanceof Number)
+ {
+ // not all Numbers may match actual JSON Numbers. i.e. fractions or
+ // Imaginary
+ final String numberAsString = numberToString((Number) value);
+ try
+ {
+ // Use the BigDecimal constructor for its parser to validate the format.
+ @SuppressWarnings("unused")
+ BigDecimal testNum = new BigDecimal(numberAsString);
+ // Close enough to a JSON number that we will use it unquoted
+ writer.write(numberAsString);
+ } catch (NumberFormatException ex)
+ {
+ // The Number value is not a valid JSON number.
+ // Instead we will quote it as a string
+ quote(numberAsString, writer);
+ }
+ }
+ else if (value instanceof Boolean)
+ {
+ writer.write(value.toString());
+ }
+ else if (value instanceof Enum<?>)
+ {
+ writer.write(quote(((Enum<?>) value).name()));
+ }
+ 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
+ {
+ 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.
+ *
+ * <p>
+ * If <code>indentFactor > 0</code> and the {@link JSONObject} has only one
+ * key, then the object will be output on a single line:
+ *
+ * <pre>
+ * {@code {"key": 1}}
+ * </pre>
+ *
+ * <p>
+ * If an object has 2 or more keys, then it will be output across multiple
+ * lines: <code><pre>{
+ * "key1": 1,
+ * "key2": "value 2",
+ * "key3": 3
+ * }</pre></code>
+ * <p>
+ * <b> Warning: This method assumes that the data structure is acyclical. </b>
+ *
+ * @param writer
+ * Writes the serialized JSON
+ * @param indentFactor
+ * The number of spaces to add to each level of indentation.
+ * @param indent
+ * The indentation 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();
+ writer.write('{');
+
+ if (length == 1)
+ {
+ final Entry<String, ?> entry = this.entrySet().iterator().next();
+ final String key = entry.getKey();
+ writer.write(quote(key));
+ writer.write(':');
+ if (indentFactor > 0)
+ {
+ writer.write(' ');
+ }
+ try
+ {
+ writeValue(writer, entry.getValue(), indentFactor, indent);
+ } catch (Exception e)
+ {
+ throw new JSONException(
+ "Unable to write JSONObject value for key: " + key, e);
+ }
+ }
+ else if (length != 0)
+ {
+ final int newindent = indent + indentFactor;
+ for (final Entry<String, ?> entry : this.entrySet())
+ {
+ if (commanate)
+ {
+ writer.write(',');
+ }
+ if (indentFactor > 0)
+ {
+ writer.write('\n');
+ }
+ indent(writer, newindent);
+ final String key = entry.getKey();
+ writer.write(quote(key));
+ writer.write(':');
+ if (indentFactor > 0)
+ {
+ writer.write(' ');
+ }
+ try
+ {
+ writeValue(writer, entry.getValue(), indentFactor, newindent);
+ } catch (Exception e)
+ {
+ throw new JSONException(
+ "Unable to write JSONObject value for key: " + key, e);
+ }
+ 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 entries 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 entries of this object
+ */
+ public Map<String, Object> toMap()
+ {
+ Map<String, Object> results = new HashMap<String, Object>();
+ for (Entry<String, Object> entry : this.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;
+ }
}
git://source.jalview.org / jalview.git / blobdiff