org.json.JSONObject Maven / Gradle / Ivy
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package org.json;
import com.jn.easyjson.core.JSONBuilderProvider;
import com.jn.easyjson.core.JsonTreeNode;
import com.jn.easyjson.core.node.JsonTreeNodes;
import com.jn.langx.util.reflect.type.Primitives;
import java.io.Closeable;
import java.io.IOException;
import java.io.StringWriter;
import java.io.Writer;
import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.*;
import java.util.Map.Entry;
/**
* A JSONObject is an unordered collection of name/value pairs. Its external
* form is a string wrapped in curly braces with colons between the names and
* values, and commas between the values and names. The internal form is an
* object having get and opt methods for accessing
* the values by name, and put methods for adding or replacing
* values by name. The values can be any of these types: Boolean,
* JSONArray, JSONObject, Number,
* String, or the JSONObject.NULL object. A
* JSONObject constructor can be used to convert an external form JSON text
* into an internal form whose values can be retrieved with the
* get and opt methods, or to convert values into a
* JSON text using the put and toString methods. A
* get method returns a value if one can be found, and throws an
* exception if one cannot be found. An opt method returns a
* default value instead of throwing an exception, and so is useful for
* obtaining optional values.
*
* The generic get() and opt() methods return an
* object, which you can cast or query for type. There are also typed
* get and opt methods that do type checking and type
* coercion for you. The opt methods differ from the get methods in that they
* do not throw. Instead, they return a specified value, such as null.
*
* The put methods add or replace values in an object. For
* example,
*
*
* myString = new JSONObject()
* .put("JSON", "Hello, World!").toString();
*
*
* produces the string {"JSON": "Hello, World"}.
*
* The texts produced by the toString methods strictly conform to
* the JSON syntax rules. The constructors are more forgiving in the texts they
* will accept:
*
* - An extra
, (comma) may appear just
* before the closing brace.
* - Strings may be quoted with
' (single
* quote).
* - Strings do not need to be quoted at all if they do not begin with a
* quote or single quote, and if they do not contain leading or trailing
* spaces, and if they do not contain any of these characters:
*
{ } [ ] / \ : , # and if they do not look like numbers and
* if they are not the reserved words true, false,
* or null.
*
*
* @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 map;
/**
* It is sometimes more convenient and less ambiguous to have a
* NULL object than to use Java's null value.
* JSONObject.NULL.equals(null) returns true.
* JSONObject.NULL.toString() returns "null".
*/
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();
}
/**
* 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();
String jsonstring = JsonTokeners.readToString(x);
JsonTreeNode treeNode = JSONBuilderProvider.simplest().fromJson(jsonstring);
if (treeNode.isJsonObjectNode()) {
Object object = JsonTreeNodes.toJavaObject(treeNode);
Map m = (Map) object;
this.map.putAll(m);
}
}
/**
* 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 null
*/
public JSONObject(Map m) {
if (m == null) {
this.map = new HashMap();
} else {
this.map = new HashMap(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 "get" or
* "is" followed by an uppercase letter, the method is invoked,
* and a key and the value returned from the getter method are put into the
* new JSONObject.
*
* The key is formed by removing the "get" or "is"
* prefix. If the second remaining character is not upper case, then the
* first character is converted to lower case.
*
* Methods that are static, return void,
* have parameters, or are "bridge" methods, are ignored.
*
* For example, if an object has a method named "getName", and
* if the result of calling object.getName() is
* "Larry Fine", then the JSONObject will contain
* "name": "Larry Fine".
*
* 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 getName method, if we annotated it with:
*
* @JSONPropertyName("FullName")
* public String getName() { return this.name; }
*
* The resulting JSON object would contain "FullName": "Larry Fine"
*
* Similarly, the {@link JSONPropertyName} annotation can be used on non-
* get and is methods. We can also override key
* name used in the JSONObject as seen below even though the field would normally
* be ignored:
*
* @JSONPropertyName("FullName")
* public String fullName() { return this.name; }
*
* The resulting JSON object would contain "FullName": "Larry Fine"
*
* 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 getName
* method from being serialized:
*
* @JSONPropertyName("FullName")
* @JSONPropertyIgnore
* public String getName() { return this.name; }
*
*
*
* @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 { (left
* brace) and ending with }
* (right brace).
* @throws JSONException If there is a syntax error in the source string or a
* duplicated key.
*/
public JSONObject(String source) throws JSONException {
this(new JSONTokener(source));
}
/**
* Construct a JSONObject from a ResourceBundle.
*
* @param baseName The ResourceBundle base name.
* @param locale The Locale to load the ResourceBundle for.
* @throws JSONException If any JSONExceptions are detected.
*/
public JSONObject(String baseName, Locale locale) throws JSONException {
this();
ResourceBundle bundle = ResourceBundle.getBundle(baseName, locale,
Thread.currentThread().getContextClassLoader());
// Iterate through the keys in the bundle.
Enumeration keys = bundle.getKeys();
while (keys.hasMoreElements()) {
Object key = keys.nextElement();
if (key != 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(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 null.
*/
public JSONObject accumulate(String key, Object value) throws JSONException {
testValidity(value);
Object object = this.opt(key);
if (object == null) {
this.put(key,
value instanceof JSONArray ? new JSONArray().put(value)
: value);
} else if (object instanceof JSONArray) {
((JSONArray) object).put(value);
} else {
this.put(key, new JSONArray().put(object).put(value));
}
return this;
}
/**
* Append values to the array under a key. If the key does not exist in the
* JSONObject, then the key is put in the JSONObject with its value being a
* JSONArray containing the value parameter. If the key was already
* associated with a JSONArray, then the value parameter is appended to it.
*
* @param key A key string.
* @param value An object to be accumulated under the key.
* @return this.
* @throws JSONException If the value is non-finite number or if the current value associated with
* the key is not a JSONArray.
* @throws NullPointerException If the key is null.
*/
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 getEnum(Class 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 null or if there is no
* value.
*
* @param key A key string.
* @return true if there is no value associated with the key or if the value
* is the JSONObject.NULL object.
*/
public boolean isNull(String key) {
return JSONObject.NULL.equals(this.opt(key));
}
/**
* Get an enumeration of the keys of the JSONObject. Modifying this key Set will also
* modify the JSONObject. Use with caution.
*
* @return An iterator of the keys.
* @see Set#iterator()
*/
public Iterator 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.
*
* @return A keySet.
* @see Map#keySet()
*/
public Set 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.
*
* @return An Entry Set
* @see Map#entrySet()
*/
protected Set> 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 optEnum(Class clazz, String key) {
return this.optEnum(clazz, key, null);
}
/**
* Get the enum value associated with a key.
*
* @param clazz The type of enum to retrieve.
* @param key A key string.
* @param defaultValue The default in case the value is not found
* @return The enum value associated with the key or defaultValue
* if the value is not found or cannot be assigned to clazz
*/
public > E optEnum(Class 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 null
* 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.
*
* @param bean the bean
* @see JSONObject#JSONObject(Object)
*/
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 = 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 key;
}
/**
* Searches the class hierarchy to see if the method or it's super
* implementations and interfaces has the annotation.
*
* @param 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 getAnnotation(final Method m, final Class annotationClass) {
// if we have invalid data the result is null
if (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 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 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 null.
*/
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 null.
*/
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 null.
*/
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 null.
*/
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 null.
*/
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 null.
*/
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 null.
*/
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 null, then the
* key will be removed from the JSONObject if it is present.
*
* @param key A key string.
* @param value An object which is the value. It should be of one of these
* types: Boolean, Double, Integer, JSONArray, JSONObject, Long,
* String, or the JSONObject.NULL object.
* @return this.
* @throws JSONException If the value is non-finite number.
* @throws NullPointerException If the key is null.
*/
public JSONObject put(String key, Object value) throws JSONException {
if (key == null) {
throw new NullPointerException("Null key.");
}
if (value != null) {
testValidity(value);
this.map.put(key, value);
} else {
this.remove(key);
}
return this;
}
/**
* Put a key/value pair in the JSONObject, but only if the key and the value
* are both non-null, and only if there is not already a member with that
* name.
*
* @param key string
* @param value object
* @return this.
* @throws JSONException if the key is a duplicate
*/
public JSONObject putOnce(String key, Object value) throws JSONException {
if (key != null && value != null) {
if (this.opt(key) != null) {
throw new JSONException("Duplicate key \"" + key + "\"");
}
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:
*
* {
* "a":{"b":"c"}
* }
*
* and this JSONPointer string:
*
* "/a/b"
*
* 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:
*
* {
* "a":{"b":"c"}
* }
*
* and this JSONPointer:
*
* "/a/b"
*
* 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 = '\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 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.
*
* Warning: This method assumes that the data structure is acyclical.
*
*
* @return a printable, displayable, portable, transmittable representation
* of the object, beginning with { (left
* brace) and ending with } (right
* brace).
*/
@Override
public String toString() {
try {
return this.toString(0);
} catch (Exception e) {
return null;
}
}
/**
* Make a pretty-printed JSON text of this JSONObject.
*
*
If indentFactor > 0 and the {@link JSONObject}
* has only one key, then the object will be output on a single line:
*
{@code {"key": 1}}
*
* If an object has 2 or more keys, then it will be output across
* multiple lines: {
* "key1": 1,
* "key2": "value 2",
* "key3": 3
* }
* Warning: This method assumes that the data structure is acyclical.
*
*
* @param indentFactor The number of spaces to add to each level of indentation.
* @return a printable, displayable, portable, transmittable representation
* of the object, beginning with { (left
* brace) and ending with } (right
* brace).
* @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.
*
*
* 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 { (left
* brace) and ending with } (right
* brace).
* @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 null, return the NULL
* object. If it is an array or collection, wrap it in a JSONArray. If it is
* a map, wrap it in a JSONObject. If it is a standard property (Double,
* String, et al) then it is already wrapped. Otherwise, if it comes from
* one of the java packages, turn it into a string. And if it doesn't, try
* to wrap it in a JSONObject. If the wrapping fails, then null is returned.
*
* @param object The object to wrap
* @return The wrapped value
*/
public static Object wrap(Object object) {
try {
if (object == null) {
return NULL;
}
if (object instanceof JSONObject || object instanceof JSONArray || NULL.equals(object) || object instanceof JSONString) {
return object;
}
if (Primitives.isPrimitive(object.getClass()) || 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.
*
* Warning: This method assumes that the data structure is acyclical.
*
*
* @return The writer.
* @throws JSONException
*/
public Writer write(Writer writer) throws JSONException {
return this.write(writer, 0, 0);
}
static final Writer writeValue(Writer writer, Object value,
int indentFactor, int indent) throws JSONException, IOException {
if (value == null || value.equals(null)) {
writer.write("null");
} else if (value instanceof 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.
*
*
If indentFactor > 0 and the {@link JSONObject}
* has only one key, then the object will be output on a single line:
*
{@code {"key": 1}}
*
* If an object has 2 or more keys, then it will be output across
* multiple lines: {
* "key1": 1,
* "key2": "value 2",
* "key3": 3
* }
* Warning: This method assumes that the data structure is acyclical.
*
*
* @param writer Writes the serialized JSON
* @param indentFactor The number of spaces to add to each level of indentation.
* @param indent The indentation of the top level.
* @return The writer.
* @throws JSONException
*/
public Writer write(Writer writer, int indentFactor, int indent)
throws JSONException {
String jsonstring = JSONBuilderProvider.create().prettyFormat(indent > 0).build().toJson(this.map);
try {
writer.write(jsonstring);
} catch (IOException e) {
throw new RuntimeException(e);
}
return writer;
}
/**
* 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.
*
* Warning: This method assumes that the data structure is acyclical.
*
* @return a java.util.Map containing the entries of this object
*/
public Map toMap() {
Map results = new HashMap();
for (Entry 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;
}
}