1847 lines
64 KiB
Java
1847 lines
64 KiB
Java
package routines.system;
|
|
|
|
/*
|
|
* Copyright (c) 2002 JSON.org
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
|
|
* documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
|
|
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
|
|
* Software.
|
|
*
|
|
* The Software shall be used for Good, not Evil.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
|
|
* WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
|
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
|
|
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
import java.io.BufferedReader;
|
|
import java.io.IOException;
|
|
import java.io.Reader;
|
|
import java.io.StringReader;
|
|
import java.io.Writer;
|
|
import java.lang.reflect.Field;
|
|
import java.lang.reflect.Method;
|
|
import java.lang.reflect.Modifier;
|
|
import java.util.Collection;
|
|
import java.util.HashMap;
|
|
import java.util.HashSet;
|
|
import java.util.Iterator;
|
|
import java.util.Map;
|
|
import java.util.Set;
|
|
import java.util.TreeSet;
|
|
|
|
/**
|
|
* A JSONObject is an unordered collection of name/value pairs. Its external form is a string wrapped in curly braces
|
|
* with colons between the names and values, and commas between the values and names. The internal form is an object
|
|
* having <code>get</code> and <code>opt</code> methods for accessing the values by name, and <code>put</code> methods
|
|
* for adding or replacing values by name. The values can be any of these types: <code>Boolean</code>,
|
|
* <code>JSONArray</code>, <code>JSONObject</code>, <code>Number</code>, <code>String</code>, or the
|
|
* <code>JSONObject.NULL</code> object. A JSONObject constructor can be used to convert an external form JSON text into
|
|
* an internal form whose values can be retrieved with the <code>get</code> and <code>opt</code> methods, or to convert
|
|
* values into a JSON text using the <code>put</code> and <code>toString</code> methods. A <code>get</code> method
|
|
* returns a value if one can be found, and throws an exception if one cannot be found. An <code>opt</code> method
|
|
* returns a default value instead of throwing an exception, and so is useful for obtaining optional values.
|
|
* <p>
|
|
* The generic <code>get()</code> and <code>opt()</code> methods return an object, which you can cast or query for type.
|
|
* There are also typed <code>get</code> and <code>opt</code> methods that do type checking and type coercion for you.
|
|
* <p>
|
|
* The <code>put</code> methods adds values to an object. For example,
|
|
*
|
|
* <pre>
|
|
* myString = new JSONObject().put("JSON", "Hello, World!").toString();
|
|
* </pre>
|
|
*
|
|
* produces the string <code>{"JSON": "Hello, World"}</code>.
|
|
* <p>
|
|
* The texts produced by the <code>toString</code> methods strictly conform to the JSON syntax rules. The constructors
|
|
* are more forgiving in the texts they will accept:
|
|
* <ul>
|
|
* <li>An extra <code>,</code> <small>(comma)</small> may appear just before the closing brace.</li>
|
|
* <li>Strings may be quoted with <code>'</code> <small>(single quote)</small>.</li>
|
|
* <li>Strings do not need to be quoted at all if they do not begin with a quote or single quote, and if they do not
|
|
* contain leading or trailing spaces, and if they do not contain any of these characters:
|
|
* <code>{ } [ ] / \ : , = ; #</code> and if they do not look like numbers and if they are not the reserved words
|
|
* <code>true</code>, <code>false</code>, or <code>null</code>.</li>
|
|
* <li>Keys can be followed by <code>=</code> or <code>=></code> as well as by <code>:</code>.</li>
|
|
* <li>Values can be followed by <code>;</code> <small>(semicolon)</small> as well as by <code>,</code>
|
|
* <small>(comma)</small>.</li>
|
|
* <li>Numbers may have the <code>0-</code> <small>(octal)</small> or <code>0x-</code> <small>(hex)</small> prefix.</li>
|
|
* </ul>
|
|
*
|
|
* @author JSON.org
|
|
* @version 2010-01-05
|
|
*/
|
|
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.
|
|
*/
|
|
protected final Object clone() {
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* A Null object is equal to the null value and to itself.
|
|
*
|
|
* @param object An object to test for nullness.
|
|
* @return true if the object parameter is the JSONObject.NULL object or null.
|
|
*/
|
|
public boolean equals(Object object) {
|
|
return object == null || object == this;
|
|
}
|
|
|
|
/**
|
|
* Get the "null" string value.
|
|
*
|
|
* @return The string "null".
|
|
*/
|
|
public String toString() {
|
|
return "null";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* The map where the JSONObject's properties are kept.
|
|
*/
|
|
private Map map;
|
|
|
|
/**
|
|
* It is sometimes more convenient and less ambiguous to have a <code>NULL</code> object than to use Java's
|
|
* <code>null</code> value. <code>JSONObject.NULL.equals(null)</code> returns <code>true</code>.
|
|
* <code>JSONObject.NULL.toString()</code> returns <code>"null"</code>.
|
|
*/
|
|
public static final Object NULL = new Null();
|
|
|
|
/**
|
|
* Construct an empty JSONObject.
|
|
*/
|
|
public JSONObject() {
|
|
this.map = new HashMap();
|
|
}
|
|
|
|
/**
|
|
* Construct a JSONObject from a subset of another JSONObject. An array of strings is used to identify the keys that
|
|
* should be copied. Missing keys are ignored.
|
|
*
|
|
* @param jo A JSONObject.
|
|
* @param names An array of strings.
|
|
* @throws JSONException
|
|
* @exception JSONException If a value is a non-finite number or if a name is duplicated.
|
|
*/
|
|
public JSONObject(JSONObject jo, String[] names) {
|
|
this();
|
|
for (int i = 0; i < names.length; i += 1) {
|
|
try {
|
|
putOnce(names[i], jo.opt(names[i]));
|
|
} catch (Exception ignore) {
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Construct a JSONObject from a JSONTokener.
|
|
*
|
|
* @param x A JSONTokener object containing the source string.
|
|
* @throws JSONException If there is a syntax error in the source string or a duplicated key.
|
|
*/
|
|
public JSONObject(JSONTokener x) throws JSONException {
|
|
this();
|
|
char c;
|
|
String key;
|
|
|
|
if (x.nextClean() != '{') {
|
|
throw x.syntaxError("A JSONObject text must begin with '{'");
|
|
}
|
|
for (;;) {
|
|
c = x.nextClean();
|
|
switch (c) {
|
|
case 0:
|
|
throw x.syntaxError("A JSONObject text must end with '}'");
|
|
case '}':
|
|
return;
|
|
default:
|
|
x.back();
|
|
key = x.nextValue().toString();
|
|
}
|
|
|
|
/*
|
|
* The key is followed by ':'. We will also tolerate '=' or '=>'.
|
|
*/
|
|
|
|
c = x.nextClean();
|
|
if (c == '=') {
|
|
if (x.next() != '>') {
|
|
x.back();
|
|
}
|
|
} else if (c != ':') {
|
|
throw x.syntaxError("Expected a ':' after a key");
|
|
}
|
|
putOnce(key, x.nextValue());
|
|
|
|
/*
|
|
* Pairs are separated by ','. We will also tolerate ';'.
|
|
*/
|
|
|
|
switch (x.nextClean()) {
|
|
case ';':
|
|
case ',':
|
|
if (x.nextClean() == '}') {
|
|
return;
|
|
}
|
|
x.back();
|
|
break;
|
|
case '}':
|
|
return;
|
|
default:
|
|
throw x.syntaxError("Expected a ',' or '}'");
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Construct a JSONObject from a Map.
|
|
*
|
|
* @param map A map object that can be used to initialize the contents of the JSONObject.
|
|
* @throws JSONException
|
|
*/
|
|
public JSONObject(Map map) {
|
|
this.map = new HashMap();
|
|
if (map != null) {
|
|
Iterator i = map.entrySet().iterator();
|
|
while (i.hasNext()) {
|
|
Map.Entry e = (Map.Entry) i.next();
|
|
this.map.put(e.getKey(), wrap(e.getValue()));
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Construct a JSONObject from an Object using bean getters. It reflects on all of the public methods of the object.
|
|
* For each of the methods with no parameters and a name starting with <code>"get"</code> or <code>"is"</code>
|
|
* followed by an uppercase letter, the method is invoked, and a key and the value returned from the getter method
|
|
* are put into the new JSONObject.
|
|
*
|
|
* The key is formed by removing the <code>"get"</code> or <code>"is"</code> prefix. If the second remaining
|
|
* character is not upper case, then the first character is converted to lower case.
|
|
*
|
|
* For example, if an object has a method named <code>"getName"</code>, and if the result of calling
|
|
* <code>object.getName()</code> is <code>"Larry Fine"</code>, then the JSONObject will contain
|
|
* <code>"name": "Larry Fine"</code>.
|
|
*
|
|
* @param bean An object that has getter methods that should be used to make a JSONObject.
|
|
*/
|
|
@Deprecated
|
|
public JSONObject(Object bean) {
|
|
this();
|
|
populateMap(bean);
|
|
}
|
|
|
|
/**
|
|
* Construct a JSONObject from an Object using bean getters. It reflects on all of the public methods of the object.
|
|
* For each of the methods with no parameters and a name starting with <code>"get"</code> or <code>"is"</code>
|
|
* followed by an uppercase letter, the method is invoked, and a key and the value returned from the getter method
|
|
* are put into the new JSONObject.
|
|
*
|
|
* The key is formed by removing the <code>"get"</code> or <code>"is"</code> prefix. If the second remaining
|
|
* character is not upper case, then the first character is converted to lower case.
|
|
*
|
|
* For example, if an object has a method named <code>"getName"</code>, and if the result of calling
|
|
* <code>object.getName()</code> is <code>"Larry Fine"</code>, then the JSONObject will contain
|
|
* <code>"name": "Larry Fine"</code>.
|
|
*
|
|
* @param bean An object that has getter methods that should be used to make a JSONObject.
|
|
* @param expectedClass Bean must be the instance of this class, for safe to avoid evil script inject
|
|
*/
|
|
public JSONObject(Object bean, Class<?> expectedClass) {
|
|
this();
|
|
|
|
Class<?> clazz = bean.getClass();
|
|
if((clazz == expectedClass) || (expectedClass!=null && expectedClass.isAssignableFrom(clazz))) {
|
|
populateMap(bean);
|
|
return;
|
|
}
|
|
|
|
throw new JSONException("expectedClass doesn't match the bean or is null");
|
|
}
|
|
|
|
/**
|
|
* Construct a JSONObject from an Object, using reflection to find the public members. The resulting JSONObject's
|
|
* keys will be the strings from the names array, and the values will be the field values associated with those keys
|
|
* in the object. If a key is not found or not visible, then it will not be copied into the new JSONObject.
|
|
*
|
|
* @param object An object that has fields that should be used to make a JSONObject.
|
|
* @param names An array of strings, the names of the fields to be obtained from the object.
|
|
*/
|
|
public JSONObject(Object object, String names[]) {
|
|
this();
|
|
Class c = object.getClass();
|
|
for (int i = 0; i < names.length; i += 1) {
|
|
String name = names[i];
|
|
try {
|
|
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));
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
*
|
|
* @param key A key string.
|
|
* @param value An object to be accumulated under the key.
|
|
* @return this.
|
|
* @throws JSONException If the value is an invalid number or if the key is null.
|
|
*/
|
|
public JSONObject accumulate(String key, Object value) throws JSONException {
|
|
testValidity(value);
|
|
Object o = opt(key);
|
|
if (o == null) {
|
|
put(key, value instanceof JSONArray ? new JSONArray().put(value) : value);
|
|
} else if (o instanceof JSONArray) {
|
|
((JSONArray) o).put(value);
|
|
} else {
|
|
put(key, new JSONArray().put(o).put(value));
|
|
}
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Append values to the array under a key. If the key does not exist in the JSONObject, then the key is put in the
|
|
* JSONObject with its value being a JSONArray containing the value parameter. If the key was already associated
|
|
* with a JSONArray, then the value parameter is appended to it.
|
|
*
|
|
* @param key A key string.
|
|
* @param value An object to be accumulated under the key.
|
|
* @return this.
|
|
* @throws JSONException If the key is null or if the current value associated with the key is not a JSONArray.
|
|
*/
|
|
public JSONObject append(String key, Object value) throws JSONException {
|
|
testValidity(value);
|
|
Object o = opt(key);
|
|
if (o == null) {
|
|
put(key, new JSONArray().put(value));
|
|
} else if (o instanceof JSONArray) {
|
|
put(key, ((JSONArray) o).put(value));
|
|
} else {
|
|
throw new JSONException("JSONObject[" + key + "] is not a JSONArray.");
|
|
}
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Produce a string from a double. The string "null" will be returned if the number is not finite.
|
|
*
|
|
* @param d A double.
|
|
* @return A String.
|
|
*/
|
|
static public String doubleToString(double d) {
|
|
if (Double.isInfinite(d) || Double.isNaN(d)) {
|
|
return "null";
|
|
}
|
|
|
|
// Shave off trailing zeros and decimal point, if possible.
|
|
|
|
String s = Double.toString(d);
|
|
if (s.indexOf('.') > 0 && s.indexOf('e') < 0 && s.indexOf('E') < 0) {
|
|
while (s.endsWith("0")) {
|
|
s = s.substring(0, s.length() - 1);
|
|
}
|
|
if (s.endsWith(".")) {
|
|
s = s.substring(0, s.length() - 1);
|
|
}
|
|
}
|
|
return s;
|
|
}
|
|
|
|
/**
|
|
* 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 {
|
|
Object o = opt(key);
|
|
if (o == null) {
|
|
throw new JSONException("JSONObject[" + quote(key) + "] not found.");
|
|
}
|
|
return o;
|
|
}
|
|
|
|
/**
|
|
* 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 o = get(key);
|
|
if (o.equals(Boolean.FALSE) || (o instanceof String && ((String) o).equalsIgnoreCase("false"))) {
|
|
return false;
|
|
} else if (o.equals(Boolean.TRUE) || (o instanceof String && ((String) o).equalsIgnoreCase("true"))) {
|
|
return true;
|
|
}
|
|
throw new JSONException("JSONObject[" + quote(key) + "] is not a Boolean.");
|
|
}
|
|
|
|
/**
|
|
* Get the double value associated with a key.
|
|
*
|
|
* @param key A key string.
|
|
* @return The numeric value.
|
|
* @throws JSONException if the key is not found or if the value is not a Number object and cannot be converted to a
|
|
* number.
|
|
*/
|
|
public double getDouble(String key) throws JSONException {
|
|
Object o = get(key);
|
|
try {
|
|
return o instanceof Number ? ((Number) o).doubleValue() : Double.valueOf((String) o).doubleValue();
|
|
} catch (Exception e) {
|
|
throw new JSONException("JSONObject[" + quote(key) + "] is not a number.");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get the int value associated with a key. If the number value is too large for an int, it will be clipped.
|
|
*
|
|
* @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 o = get(key);
|
|
return o instanceof Number ? ((Number) o).intValue() : (int) getDouble(key);
|
|
}
|
|
|
|
/**
|
|
* 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 o = get(key);
|
|
if (o instanceof JSONArray) {
|
|
return (JSONArray) o;
|
|
}
|
|
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 o = get(key);
|
|
if (o instanceof JSONObject) {
|
|
return (JSONObject) o;
|
|
}
|
|
throw new JSONException("JSONObject[" + quote(key) + "] is not a JSONObject.");
|
|
}
|
|
|
|
/**
|
|
* Get the long value associated with a key. If the number value is too long for a long, it will be clipped.
|
|
*
|
|
* @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 o = get(key);
|
|
return o instanceof Number ? ((Number) o).longValue() : (long) getDouble(key);
|
|
}
|
|
|
|
/**
|
|
* Get an array of field names from a JSONObject.
|
|
*
|
|
* @return An array of field names, or null if there are no names.
|
|
*/
|
|
public static String[] getNames(JSONObject jo) {
|
|
int length = jo.length();
|
|
if (length == 0) {
|
|
return null;
|
|
}
|
|
Iterator i = jo.keys();
|
|
String[] names = new String[length];
|
|
int j = 0;
|
|
while (i.hasNext()) {
|
|
names[j] = (String) i.next();
|
|
j += 1;
|
|
}
|
|
return names;
|
|
}
|
|
|
|
/**
|
|
* Get an array of field names from an Object.
|
|
*
|
|
* @return An array of field names, or null if there are no names.
|
|
*/
|
|
public static String[] getNames(Object object) {
|
|
if (object == null) {
|
|
return null;
|
|
}
|
|
Class klass = object.getClass();
|
|
Field[] fields = klass.getFields();
|
|
int length = fields.length;
|
|
if (length == 0) {
|
|
return null;
|
|
}
|
|
String[] names = new String[length];
|
|
for (int i = 0; i < length; i += 1) {
|
|
names[i] = fields[i].getName();
|
|
}
|
|
return names;
|
|
}
|
|
|
|
/**
|
|
* Get the string associated with a key.
|
|
*
|
|
* @param key A key string.
|
|
* @return A string which is the value.
|
|
* @throws JSONException if the key is not found.
|
|
*/
|
|
public String getString(String key) throws JSONException {
|
|
return get(key).toString();
|
|
}
|
|
|
|
/**
|
|
* 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 = opt(key);
|
|
if (value == null) {
|
|
put(key, 1);
|
|
} else {
|
|
if (value instanceof Integer) {
|
|
put(key, ((Integer) value).intValue() + 1);
|
|
} else if (value instanceof Long) {
|
|
put(key, ((Long) value).longValue() + 1);
|
|
} else if (value instanceof Double) {
|
|
put(key, ((Double) value).doubleValue() + 1);
|
|
} else if (value instanceof Float) {
|
|
put(key, ((Float) value).floatValue() + 1);
|
|
} else {
|
|
throw new JSONException("Unable to increment [" + 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(opt(key));
|
|
}
|
|
|
|
/**
|
|
* Get an enumeration of the keys of the JSONObject.
|
|
*
|
|
* @return An iterator of the keys.
|
|
*/
|
|
public Iterator keys() {
|
|
return this.map.keySet().iterator();
|
|
}
|
|
|
|
/**
|
|
* Get the number of keys stored in the JSONObject.
|
|
*
|
|
* @return The number of keys in the JSONObject.
|
|
*/
|
|
public int length() {
|
|
return this.map.size();
|
|
}
|
|
|
|
/**
|
|
* Produce a JSONArray containing the names of the elements of this JSONObject.
|
|
*
|
|
* @return A JSONArray containing the key strings, or null if the JSONObject is empty.
|
|
*/
|
|
public JSONArray names() {
|
|
JSONArray ja = new JSONArray();
|
|
Iterator keys = keys();
|
|
while (keys.hasNext()) {
|
|
ja.put(keys.next());
|
|
}
|
|
return ja.length() == 0 ? null : ja;
|
|
}
|
|
|
|
/**
|
|
* Produce a string from a Number.
|
|
*
|
|
* @param n A Number
|
|
* @return A String.
|
|
* @throws JSONException If n is a non-finite number.
|
|
*/
|
|
static public String numberToString(Number n) throws JSONException {
|
|
if (n == null) {
|
|
throw new JSONException("Null pointer");
|
|
}
|
|
testValidity(n);
|
|
|
|
// Shave off trailing zeros and decimal point, if possible.
|
|
|
|
String s = n.toString();
|
|
if (s.indexOf('.') > 0 && s.indexOf('e') < 0 && s.indexOf('E') < 0) {
|
|
while (s.endsWith("0")) {
|
|
s = s.substring(0, s.length() - 1);
|
|
}
|
|
if (s.endsWith(".")) {
|
|
s = s.substring(0, s.length() - 1);
|
|
}
|
|
}
|
|
return s;
|
|
}
|
|
|
|
/**
|
|
* Get an optional value associated with a key.
|
|
*
|
|
* @param key A key string.
|
|
* @return An object which is the value, or null if there is no value.
|
|
*/
|
|
public Object opt(String key) {
|
|
return key == null ? null : this.map.get(key);
|
|
}
|
|
|
|
/**
|
|
* Get an optional boolean associated with a key. It returns false if there is no such key, or if the value is not
|
|
* Boolean.TRUE or the String "true".
|
|
*
|
|
* @param key A key string.
|
|
* @return The truth.
|
|
*/
|
|
public boolean optBoolean(String key) {
|
|
return optBoolean(key, false);
|
|
}
|
|
|
|
/**
|
|
* Get an optional boolean associated with a key. It returns the defaultValue if there is no such key, or if it is
|
|
* not a Boolean or the String "true" or "false" (case insensitive).
|
|
*
|
|
* @param key A key string.
|
|
* @param defaultValue The default.
|
|
* @return The truth.
|
|
*/
|
|
public boolean optBoolean(String key, boolean defaultValue) {
|
|
try {
|
|
return getBoolean(key);
|
|
} catch (Exception e) {
|
|
return defaultValue;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get an optional double associated with a key, or NaN if there is no such key or if its value is not a number. If
|
|
* the value is a string, an attempt will be made to evaluate it as a number.
|
|
*
|
|
* @param key A string which is the key.
|
|
* @return An object which is the value.
|
|
*/
|
|
public double optDouble(String key) {
|
|
return optDouble(key, Double.NaN);
|
|
}
|
|
|
|
/**
|
|
* Get an optional double associated with a key, or the defaultValue if there is no such key or if its value is not
|
|
* a number. If the value is a string, an attempt will be made to evaluate it as a number.
|
|
*
|
|
* @param key A key string.
|
|
* @param defaultValue The default.
|
|
* @return An object which is the value.
|
|
*/
|
|
public double optDouble(String key, double defaultValue) {
|
|
try {
|
|
Object o = opt(key);
|
|
return o instanceof Number ? ((Number) o).doubleValue() : new Double((String) o).doubleValue();
|
|
} catch (Exception e) {
|
|
return defaultValue;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get an optional int value associated with a key, or zero if there is no such key or if the value is not a number.
|
|
* If the value is a string, an attempt will be made to evaluate it as a number.
|
|
*
|
|
* @param key A key string.
|
|
* @return An object which is the value.
|
|
*/
|
|
public int optInt(String key) {
|
|
return optInt(key, 0);
|
|
}
|
|
|
|
/**
|
|
* Get an optional int value associated with a key, or the default if there is no such key or if the value is not a
|
|
* number. If the value is a string, an attempt will be made to evaluate it as a number.
|
|
*
|
|
* @param key A key string.
|
|
* @param defaultValue The default.
|
|
* @return An object which is the value.
|
|
*/
|
|
public int optInt(String key, int defaultValue) {
|
|
try {
|
|
return getInt(key);
|
|
} catch (Exception e) {
|
|
return defaultValue;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get an optional JSONArray associated with a key. It returns null if there is no such key, or if its value is not
|
|
* a JSONArray.
|
|
*
|
|
* @param key A key string.
|
|
* @return A JSONArray which is the value.
|
|
*/
|
|
public JSONArray optJSONArray(String key) {
|
|
Object o = 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 o = opt(key);
|
|
return o instanceof JSONObject ? (JSONObject) o : 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 optLong(key, 0);
|
|
}
|
|
|
|
/**
|
|
* Get an optional long value associated with a key, or the default if there is no such key or if the value is not a
|
|
* number. If the value is a string, an attempt will be made to evaluate it as a number.
|
|
*
|
|
* @param key A key string.
|
|
* @param defaultValue The default.
|
|
* @return An object which is the value.
|
|
*/
|
|
public long optLong(String key, long defaultValue) {
|
|
try {
|
|
return getLong(key);
|
|
} catch (Exception e) {
|
|
return defaultValue;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get an optional string associated with a key. It returns an empty string if there is no such key. If the value is
|
|
* not a string and is not null, then it is coverted to a string.
|
|
*
|
|
* @param key A key string.
|
|
* @return A string which is the value.
|
|
*/
|
|
public String optString(String key) {
|
|
return 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 o = opt(key);
|
|
return o != null ? o.toString() : defaultValue;
|
|
}
|
|
|
|
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();
|
|
|
|
Field[] fields = (includeSuperClass) ? klass.getFields() : klass.getDeclaredFields();
|
|
Set<String> fieldNames = new HashSet<String>();
|
|
for(Field field : fields) {
|
|
fieldNames.add(field.getName());
|
|
}
|
|
|
|
for (int i = 0; i < methods.length; i += 1) {
|
|
try {
|
|
Method method = methods[i];
|
|
if (Modifier.isPublic(method.getModifiers())) {
|
|
String name = method.getName();
|
|
String key = "";
|
|
if (name.startsWith("get")) {
|
|
if (name.equals("getClass") || name.equals("getDeclaringClass")) {
|
|
key = "";
|
|
} else {
|
|
key = name.substring(3);
|
|
}
|
|
}
|
|
// modified by wyang: remove the "isEmpty" case in HashMap
|
|
// else if (name.startsWith("is")) {
|
|
// key = name.substring(2);
|
|
// }
|
|
if (key.length() > 0 && Character.isUpperCase(key.charAt(0)) && method.getParameterTypes().length == 0) {
|
|
if(!fieldNames.contains(key)) {
|
|
key = Character.toLowerCase(key.charAt(0)) + key.substring(1);
|
|
}
|
|
|
|
Object result = method.invoke(bean, (Object[]) null);
|
|
|
|
map.put(key, wrap(result));
|
|
}
|
|
}
|
|
} catch (Exception ignore) {
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Put a key/boolean pair in the JSONObject.
|
|
*
|
|
* @param key A key string.
|
|
* @param value A boolean which is the value.
|
|
* @return this.
|
|
* @throws JSONException If the key is null.
|
|
*/
|
|
public JSONObject put(String key, boolean value) throws JSONException {
|
|
put(key, value ? Boolean.TRUE : Boolean.FALSE);
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Put a key/value pair in the JSONObject, where the value will be a JSONArray which is produced from a Collection.
|
|
*
|
|
* @param key A key string.
|
|
* @param value A Collection value.
|
|
* @return this.
|
|
* @throws JSONException
|
|
*/
|
|
public JSONObject put(String key, Collection value) throws JSONException {
|
|
put(key, new JSONArray(value));
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Put a key/double pair in the JSONObject.
|
|
*
|
|
* @param key A key string.
|
|
* @param value A double which is the value.
|
|
* @return this.
|
|
* @throws JSONException If the key is null or if the number is invalid.
|
|
*/
|
|
public JSONObject put(String key, double value) throws JSONException {
|
|
put(key, new Double(value));
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Put a key/int pair in the JSONObject.
|
|
*
|
|
* @param key A key string.
|
|
* @param value An int which is the value.
|
|
* @return this.
|
|
* @throws JSONException If the key is null.
|
|
*/
|
|
public JSONObject put(String key, int value) throws JSONException {
|
|
put(key, new Integer(value));
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Put a key/long pair in the JSONObject.
|
|
*
|
|
* @param key A key string.
|
|
* @param value A long which is the value.
|
|
* @return this.
|
|
* @throws JSONException If the key is null.
|
|
*/
|
|
public JSONObject put(String key, long value) throws JSONException {
|
|
put(key, new Long(value));
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Put a key/value pair in the JSONObject, where the value will be a JSONObject which is produced from a Map.
|
|
*
|
|
* @param key A key string.
|
|
* @param value A Map value.
|
|
* @return this.
|
|
* @throws JSONException
|
|
*/
|
|
public JSONObject put(String key, Map value) throws JSONException {
|
|
put(key, new JSONObject(value));
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Put a key/value pair in the JSONObject. If the value is null, then the key will be removed from the JSONObject if
|
|
* it is present.
|
|
*
|
|
* @param key A key string.
|
|
* @param value An object which is the value. It should be of one of these types: Boolean, Double, Integer,
|
|
* JSONArray, JSONObject, Long, String, or the JSONObject.NULL object.
|
|
* @return this.
|
|
* @throws JSONException If the value is non-finite number or if the key is null.
|
|
*/
|
|
public JSONObject put(String key, Object value) throws JSONException {
|
|
if (key == null) {
|
|
throw new JSONException("Null key.");
|
|
}
|
|
if (value != null) {
|
|
testValidity(value);
|
|
this.map.put(key, value);
|
|
} else {
|
|
remove(key);
|
|
}
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Put a key/value pair in the JSONObject, but only if the key and the value are both non-null, and only if there is
|
|
* not already a member with that name.
|
|
*
|
|
* @param key
|
|
* @param value
|
|
* @return his.
|
|
* @throws JSONException if the key is a duplicate
|
|
*/
|
|
public JSONObject putOnce(String key, Object value) throws JSONException {
|
|
if (key != null && value != null) {
|
|
if (opt(key) != null) {
|
|
throw new JSONException("Duplicate key \"" + key + "\"");
|
|
}
|
|
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) {
|
|
put(key, value);
|
|
}
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Produce a string in double quotes with backslash sequences in all the right places. A backslash will be inserted
|
|
* within </, allowing JSON text to be delivered in HTML. In JSON text, a string cannot contain a control character
|
|
* or an unescaped quote or backslash.
|
|
*
|
|
* @param string A String
|
|
* @return A String correctly formatted for insertion in a JSON text.
|
|
*/
|
|
public static String quote(String string) {
|
|
if (string == null || string.length() == 0) {
|
|
return "\"\"";
|
|
}
|
|
|
|
char b;
|
|
char c = 0;
|
|
int i;
|
|
int len = string.length();
|
|
StringBuilder sb = new StringBuilder(len + 4);
|
|
String t;
|
|
|
|
sb.append('"');
|
|
for (i = 0; i < len; i += 1) {
|
|
b = c;
|
|
c = string.charAt(i);
|
|
switch (c) {
|
|
case '\\':
|
|
case '"':
|
|
sb.append('\\');
|
|
sb.append(c);
|
|
break;
|
|
case '/':
|
|
if (b == '<') {
|
|
sb.append('\\');
|
|
}
|
|
sb.append(c);
|
|
break;
|
|
case '\b':
|
|
sb.append("\\b");
|
|
break;
|
|
case '\t':
|
|
sb.append("\\t");
|
|
break;
|
|
case '\n':
|
|
sb.append("\\n");
|
|
break;
|
|
case '\f':
|
|
sb.append("\\f");
|
|
break;
|
|
case '\r':
|
|
sb.append("\\r");
|
|
break;
|
|
default:
|
|
if (c < ' ' || (c >= '\u0080' && c < '\u00a0') || (c >= '\u2000' && c < '\u2100')) {
|
|
t = "000" + Integer.toHexString(c);
|
|
sb.append("\\u" + t.substring(t.length() - 4));
|
|
} else {
|
|
sb.append(c);
|
|
}
|
|
}
|
|
}
|
|
sb.append('"');
|
|
return sb.toString();
|
|
}
|
|
|
|
/**
|
|
* Remove a name and its value, if present.
|
|
*
|
|
* @param key The name to be removed.
|
|
* @return The value that was associated with the name, or null if there was no value.
|
|
*/
|
|
public Object remove(String key) {
|
|
return this.map.remove(key);
|
|
}
|
|
|
|
/**
|
|
* Get an enumeration of the keys of the JSONObject. The keys will be sorted alphabetically.
|
|
*
|
|
* @return An iterator of the keys.
|
|
*/
|
|
public Iterator sortedKeys() {
|
|
return new TreeSet(this.map.keySet()).iterator();
|
|
}
|
|
|
|
/**
|
|
* Try to convert a string into a number, boolean, or null. If the string can't be converted, return the string.
|
|
*
|
|
* @param s A String.
|
|
* @return A simple JSON value.
|
|
*/
|
|
static public Object stringToValue(String s) {
|
|
if (s.equals("")) {
|
|
return s;
|
|
}
|
|
if (s.equalsIgnoreCase("true")) {
|
|
return Boolean.TRUE;
|
|
}
|
|
if (s.equalsIgnoreCase("false")) {
|
|
return Boolean.FALSE;
|
|
}
|
|
if (s.equalsIgnoreCase("null")) {
|
|
return JSONObject.NULL;
|
|
}
|
|
|
|
/*
|
|
* If it might be a number, try converting it. We support the non-standard 0x- convention. If a number cannot be
|
|
* produced, then the value will just be a string. Note that the 0x-, plus, and implied string conventions are
|
|
* non-standard. A JSON parser may accept non-JSON forms as long as it accepts all correct JSON forms.
|
|
*/
|
|
|
|
char b = s.charAt(0);
|
|
if ((b >= '0' && b <= '9') || b == '.' || b == '-' || b == '+') {
|
|
if (b == '0' && s.length() > 2 && (s.charAt(1) == 'x' || s.charAt(1) == 'X')) {
|
|
try {
|
|
return new Integer(Integer.parseInt(s.substring(2), 16));
|
|
} catch (Exception ignore) {
|
|
}
|
|
}
|
|
try {
|
|
if (s.indexOf('.') > -1 || s.indexOf('e') > -1 || s.indexOf('E') > -1) {
|
|
return Double.valueOf(s);
|
|
} else {
|
|
Long myLong = new Long(s);
|
|
if (myLong.longValue() == myLong.intValue()) {
|
|
return new Integer(myLong.intValue());
|
|
} else {
|
|
return myLong;
|
|
}
|
|
}
|
|
} catch (Exception ignore) {
|
|
}
|
|
}
|
|
return s;
|
|
}
|
|
|
|
/**
|
|
* Throw an exception if the object is an NaN or infinite number.
|
|
*
|
|
* @param o The object to test.
|
|
* @throws JSONException If o is a non-finite number.
|
|
*/
|
|
static void testValidity(Object o) throws JSONException {
|
|
if (o != null) {
|
|
if (o instanceof Double) {
|
|
if (((Double) o).isInfinite() || ((Double) o).isNaN()) {
|
|
throw new JSONException("JSON does not allow non-finite numbers.");
|
|
}
|
|
} else if (o instanceof Float) {
|
|
if (((Float) o).isInfinite() || ((Float) o).isNaN()) {
|
|
throw new JSONException("JSON does not allow non-finite numbers.");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Produce a JSONArray containing the values of the members of this JSONObject.
|
|
*
|
|
* @param names A JSONArray containing a list of key strings. This determines the sequence of the values in the
|
|
* result.
|
|
* @return A JSONArray of values.
|
|
* @throws JSONException If any of the values are non-finite numbers.
|
|
*/
|
|
public JSONArray toJSONArray(JSONArray names) throws JSONException {
|
|
if (names == null || names.length() == 0) {
|
|
return null;
|
|
}
|
|
JSONArray ja = new JSONArray();
|
|
for (int i = 0; i < names.length(); i += 1) {
|
|
ja.put(this.opt(names.getString(i)));
|
|
}
|
|
return ja;
|
|
}
|
|
|
|
/**
|
|
* Make a JSON text of this JSONObject. For compactness, no whitespace is added. If this would not result in a
|
|
* syntactically correct JSON text, then null will be returned instead.
|
|
* <p>
|
|
* Warning: This method assumes that the data structure is acyclical.
|
|
*
|
|
* @return a printable, displayable, portable, transmittable representation of the object, beginning with
|
|
* <code>{</code> <small>(left brace)</small> and ending with <code>}</code> <small>(right brace)</small>.
|
|
*/
|
|
public String toString() {
|
|
try {
|
|
Iterator keys = keys();
|
|
StringBuilder sb = new StringBuilder("{");
|
|
|
|
while (keys.hasNext()) {
|
|
if (sb.length() > 1) {
|
|
sb.append(',');
|
|
}
|
|
Object o = keys.next();
|
|
sb.append(quote(o.toString()));
|
|
sb.append(':');
|
|
sb.append(valueToString(this.map.get(o)));
|
|
}
|
|
sb.append('}');
|
|
return sb.toString();
|
|
} catch (Exception e) {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Make a prettyprinted JSON text of this JSONObject.
|
|
* <p>
|
|
* Warning: This method assumes that the data structure is acyclical.
|
|
*
|
|
* @param indentFactor The number of spaces to add to each level of indentation.
|
|
* @return a printable, displayable, portable, transmittable representation of the object, beginning with
|
|
* <code>{</code> <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 {
|
|
return toString(indentFactor, 0);
|
|
}
|
|
|
|
/**
|
|
* Make a prettyprinted JSON text of this JSONObject.
|
|
* <p>
|
|
* Warning: This method assumes that the data structure is acyclical.
|
|
*
|
|
* @param indentFactor The number of spaces to add to each level of indentation.
|
|
* @param indent The indentation of the top level.
|
|
* @return a printable, displayable, transmittable representation of the object, beginning with <code>{</code>
|
|
* <small>(left brace)</small> and ending with <code>}</code> <small>(right brace)</small>.
|
|
* @throws JSONException If the object contains an invalid number.
|
|
*/
|
|
String toString(int indentFactor, int indent) throws JSONException {
|
|
int j;
|
|
int n = length();
|
|
if (n == 0) {
|
|
return "{}";
|
|
}
|
|
Iterator keys = sortedKeys();
|
|
StringBuilder sb = new StringBuilder("{");
|
|
int newindent = indent + indentFactor;
|
|
Object o;
|
|
if (n == 1) {
|
|
o = keys.next();
|
|
sb.append(quote(o.toString()));
|
|
sb.append(": ");
|
|
sb.append(valueToString(this.map.get(o), indentFactor, indent));
|
|
} else {
|
|
while (keys.hasNext()) {
|
|
o = keys.next();
|
|
if (sb.length() > 1) {
|
|
sb.append(",\n");
|
|
} else {
|
|
sb.append('\n');
|
|
}
|
|
for (j = 0; j < newindent; j += 1) {
|
|
sb.append(' ');
|
|
}
|
|
sb.append(quote(o.toString()));
|
|
sb.append(": ");
|
|
sb.append(valueToString(this.map.get(o), indentFactor, newindent));
|
|
}
|
|
if (sb.length() > 1) {
|
|
sb.append('\n');
|
|
for (j = 0; j < indent; j += 1) {
|
|
sb.append(' ');
|
|
}
|
|
}
|
|
}
|
|
sb.append('}');
|
|
return sb.toString();
|
|
}
|
|
|
|
/**
|
|
* Make a JSON text of an Object value. If the object has an value.toJSONString() method, then that method will be
|
|
* used to produce the JSON text. The method is required to produce a strictly conforming text. If the object does
|
|
* not contain a toJSONString method (which is the most common case), then a text will be produced by other means.
|
|
* If the value is an array or Collection, then a JSONArray will be made from it and its toJSONString method will be
|
|
* called. If the value is a MAP, then a JSONObject will be made from it and its toJSONString method will be called.
|
|
* Otherwise, the value's toString method will be called, and the result will be quoted.
|
|
*
|
|
* <p>
|
|
* Warning: This method assumes that the data structure is acyclical.
|
|
*
|
|
* @param value The value to be serialized.
|
|
* @return a printable, displayable, transmittable representation of the object, beginning with <code>{</code>
|
|
* <small>(left brace)</small> and ending with <code>}</code> <small>(right brace)</small>.
|
|
* @throws JSONException If the value is or contains an invalid number.
|
|
*/
|
|
static String valueToString(Object value) throws JSONException {
|
|
if (value == null || value.equals(null)) {
|
|
return "null";
|
|
}
|
|
if (value instanceof JSONString) {
|
|
Object o;
|
|
try {
|
|
o = ((JSONString) value).toJSONString();
|
|
} catch (Exception e) {
|
|
throw new JSONException(e);
|
|
}
|
|
if (o instanceof String) {
|
|
return (String) o;
|
|
}
|
|
throw new JSONException("Bad value from toJSONString: " + o);
|
|
}
|
|
if (value instanceof Number) {
|
|
return numberToString((Number) value);
|
|
}
|
|
if (value instanceof Boolean || value instanceof JSONObject || value instanceof JSONArray) {
|
|
return value.toString();
|
|
}
|
|
if (value instanceof Map) {
|
|
return new JSONObject((Map) value).toString();
|
|
}
|
|
if (value instanceof Collection) {
|
|
return new JSONArray((Collection) value).toString();
|
|
}
|
|
if (value.getClass().isArray()) {
|
|
return new JSONArray(value).toString();
|
|
}
|
|
return quote(value.toString());
|
|
}
|
|
|
|
/**
|
|
* Make a prettyprinted JSON text of an object value.
|
|
* <p>
|
|
* Warning: This method assumes that the data structure is acyclical.
|
|
*
|
|
* @param value The value to be serialized.
|
|
* @param indentFactor The number of spaces to add to each level of indentation.
|
|
* @param indent The indentation of the top level.
|
|
* @return a printable, displayable, transmittable representation of the object, beginning with <code>{</code>
|
|
* <small>(left brace)</small> and ending with <code>}</code> <small>(right brace)</small>.
|
|
* @throws JSONException If the object contains an invalid number.
|
|
*/
|
|
static String valueToString(Object value, int indentFactor, int indent) throws JSONException {
|
|
if (value == null || value.equals(null)) {
|
|
return "null";
|
|
}
|
|
try {
|
|
if (value instanceof JSONString) {
|
|
Object o = ((JSONString) value).toJSONString();
|
|
if (o instanceof String) {
|
|
return (String) o;
|
|
}
|
|
}
|
|
} catch (Exception ignore) {
|
|
}
|
|
if (value instanceof Number) {
|
|
return numberToString((Number) value);
|
|
}
|
|
if (value instanceof Boolean) {
|
|
return value.toString();
|
|
}
|
|
if (value instanceof JSONObject) {
|
|
return ((JSONObject) value).toString(indentFactor, indent);
|
|
}
|
|
if (value instanceof JSONArray) {
|
|
return ((JSONArray) value).toString(indentFactor, indent);
|
|
}
|
|
if (value instanceof Map) {
|
|
return new JSONObject((Map) value).toString(indentFactor, indent);
|
|
}
|
|
if (value instanceof Collection) {
|
|
return new JSONArray((Collection) value).toString(indentFactor, indent);
|
|
}
|
|
if (value.getClass().isArray()) {
|
|
return new JSONArray(value).toString(indentFactor, indent);
|
|
}
|
|
return quote(value.toString());
|
|
}
|
|
|
|
/**
|
|
* Wrap an object, if necessary. If the object is null, return the NULL object. If it is an array or collection,
|
|
* wrap it in a JSONArray. If it is a map, wrap it in a JSONObject. If it is a standard property (Double, String, et
|
|
* al) then it is already wrapped. Otherwise, if it comes from one of the java packages, turn it into a string. And
|
|
* if it doesn't, try to wrap it in a JSONObject. If the wrapping fails, then null is returned.
|
|
*
|
|
* @param object The object to wrap
|
|
* @return The wrapped value
|
|
*/
|
|
static Object wrap(Object object) {
|
|
try {
|
|
if (object == null ) {
|
|
return NULL;
|
|
}
|
|
if (object instanceof routines.system.Document || object instanceof JSONObject || object instanceof JSONArray || 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 || NULL.equals(object)) {
|
|
return object;
|
|
}
|
|
|
|
if (object instanceof Collection) {
|
|
return new JSONArray((Collection) object);
|
|
}
|
|
if (object.getClass().isArray()) {
|
|
return new JSONArray(object);
|
|
}
|
|
if (object instanceof Map) {
|
|
return new JSONObject((Map) object);
|
|
}
|
|
Package objectPackage = object.getClass().getPackage();
|
|
String objectPackageName = (objectPackage != null ? objectPackage.getName() : "");
|
|
if (objectPackageName.startsWith("java.") || objectPackageName.startsWith("javax.")
|
|
|| object.getClass().getClassLoader() == null) {
|
|
return object.toString();
|
|
}
|
|
return new JSONObject(object);
|
|
} catch (Exception exception) {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Write the contents of the JSONObject as JSON text to a writer. For compactness, no whitespace is added.
|
|
* <p>
|
|
* Warning: This method assumes that the data structure is acyclical.
|
|
*
|
|
* @return The writer.
|
|
* @throws JSONException
|
|
*/
|
|
public Writer write(Writer writer) throws JSONException {
|
|
try {
|
|
boolean b = false;
|
|
Iterator keys = keys();
|
|
writer.write('{');
|
|
|
|
while (keys.hasNext()) {
|
|
if (b) {
|
|
writer.write(',');
|
|
}
|
|
Object k = keys.next();
|
|
writer.write(quote(k.toString()));
|
|
writer.write(':');
|
|
Object v = this.map.get(k);
|
|
if (v instanceof JSONObject) {
|
|
((JSONObject) v).write(writer);
|
|
} else if (v instanceof JSONArray) {
|
|
((JSONArray) v).write(writer);
|
|
} else {
|
|
writer.write(valueToString(v));
|
|
}
|
|
b = true;
|
|
}
|
|
writer.write('}');
|
|
return writer;
|
|
} catch (IOException exception) {
|
|
throw new JSONException(exception);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* A JSONTokener takes a source string and extracts characters and tokens from it. It is used by the JSONObject and
|
|
* JSONArray constructors to parse JSON source strings.
|
|
*
|
|
* @author JSON.org
|
|
* @version 2010-02-02
|
|
*/
|
|
class JSONTokener {
|
|
|
|
private int character;
|
|
|
|
private boolean eof;
|
|
|
|
private int index;
|
|
|
|
private int line;
|
|
|
|
private char previous;
|
|
|
|
private Reader reader;
|
|
|
|
private boolean usePrevious;
|
|
|
|
/**
|
|
* Construct a JSONTokener from a reader.
|
|
*
|
|
* @param reader A reader.
|
|
*/
|
|
public JSONTokener(Reader reader) {
|
|
this.reader = reader.markSupported() ? reader : new BufferedReader(reader);
|
|
this.eof = false;
|
|
this.usePrevious = false;
|
|
this.previous = 0;
|
|
this.index = 0;
|
|
this.character = 1;
|
|
this.line = 1;
|
|
}
|
|
|
|
/**
|
|
* Construct a JSONTokener from a string.
|
|
*
|
|
* @param s A source string.
|
|
*/
|
|
public JSONTokener(String s) {
|
|
this(new StringReader(s));
|
|
}
|
|
|
|
/**
|
|
* Back up one character. This provides a sort of lookahead capability, so that you can test for a digit or letter
|
|
* before attempting to parse the next number or identifier.
|
|
*/
|
|
public void back() throws JSONException {
|
|
if (usePrevious || index <= 0) {
|
|
throw new JSONException("Stepping back two steps is not supported");
|
|
}
|
|
this.index -= 1;
|
|
this.character -= 1;
|
|
this.usePrevious = true;
|
|
this.eof = false;
|
|
}
|
|
|
|
/**
|
|
* Get the hex value of a character (base16).
|
|
*
|
|
* @param c A character between '0' and '9' or between 'A' and 'F' or between 'a' and 'f'.
|
|
* @return An int between 0 and 15, or -1 if c was not a hex digit.
|
|
*/
|
|
public static int dehexchar(char c) {
|
|
if (c >= '0' && c <= '9') {
|
|
return c - '0';
|
|
}
|
|
if (c >= 'A' && c <= 'F') {
|
|
return c - ('A' - 10);
|
|
}
|
|
if (c >= 'a' && c <= 'f') {
|
|
return c - ('a' - 10);
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
public boolean end() {
|
|
return eof && !usePrevious;
|
|
}
|
|
|
|
/**
|
|
* Determine if the source string still contains characters that next() can consume.
|
|
*
|
|
* @return true if not yet at the end of the source.
|
|
*/
|
|
public boolean more() throws JSONException {
|
|
next();
|
|
if (end()) {
|
|
return false;
|
|
}
|
|
back();
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Get the next character in the source string.
|
|
*
|
|
* @return The next character, or 0 if past the end of the source string.
|
|
*/
|
|
public char next() throws JSONException {
|
|
int c;
|
|
if (this.usePrevious) {
|
|
this.usePrevious = false;
|
|
c = this.previous;
|
|
} else {
|
|
try {
|
|
c = this.reader.read();
|
|
} catch (IOException exception) {
|
|
throw new JSONException(exception);
|
|
}
|
|
|
|
if (c <= 0) { // End of stream
|
|
this.eof = true;
|
|
c = 0;
|
|
}
|
|
}
|
|
this.index += 1;
|
|
if (this.previous == '\r') {
|
|
this.line += 1;
|
|
this.character = c == '\n' ? 0 : 1;
|
|
} else if (c == '\n') {
|
|
this.line += 1;
|
|
this.character = 0;
|
|
} else {
|
|
this.character += 1;
|
|
}
|
|
this.previous = (char) c;
|
|
return this.previous;
|
|
}
|
|
|
|
/**
|
|
* Consume the next character, and check that it matches a specified character.
|
|
*
|
|
* @param c The character to match.
|
|
* @return The character.
|
|
* @throws JSONException if the character does not match.
|
|
*/
|
|
public char next(char c) throws JSONException {
|
|
char n = next();
|
|
if (n != c) {
|
|
throw syntaxError("Expected '" + c + "' and instead saw '" + n + "'");
|
|
}
|
|
return n;
|
|
}
|
|
|
|
/**
|
|
* Get the next n characters.
|
|
*
|
|
* @param n The number of characters to take.
|
|
* @return A string of n characters.
|
|
* @throws JSONException Substring bounds error if there are not n characters remaining in the source string.
|
|
*/
|
|
public String next(int n) throws JSONException {
|
|
if (n == 0) {
|
|
return "";
|
|
}
|
|
|
|
char[] buffer = new char[n];
|
|
int pos = 0;
|
|
|
|
while (pos < n) {
|
|
buffer[pos] = next();
|
|
if (end()) {
|
|
throw syntaxError("Substring bounds error");
|
|
}
|
|
pos += 1;
|
|
}
|
|
return new String(buffer);
|
|
}
|
|
|
|
/**
|
|
* Get the next char in the string, skipping whitespace.
|
|
*
|
|
* @throws JSONException
|
|
* @return A character, or 0 if there are no more characters.
|
|
*/
|
|
public char nextClean() throws JSONException {
|
|
for (;;) {
|
|
char c = next();
|
|
if (c == 0 || c > ' ') {
|
|
return c;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return the characters up to the next close quote character. Backslash processing is done. The formal JSON format
|
|
* does not allow strings in single quotes, but an implementation is allowed to accept them.
|
|
*
|
|
* @param quote The quoting character, either <code>"</code> <small>(double quote)</small> or <code>'</code>
|
|
* <small>(single quote)</small>.
|
|
* @return A String.
|
|
* @throws JSONException Unterminated string.
|
|
*/
|
|
public String nextString(char quote) throws JSONException {
|
|
char c;
|
|
StringBuilder sb = new StringBuilder();
|
|
for (;;) {
|
|
c = next();
|
|
switch (c) {
|
|
case 0:
|
|
case '\n':
|
|
case '\r':
|
|
throw syntaxError("Unterminated string");
|
|
case '\\':
|
|
c = next();
|
|
switch (c) {
|
|
case 'b':
|
|
sb.append('\b');
|
|
break;
|
|
case 't':
|
|
sb.append('\t');
|
|
break;
|
|
case 'n':
|
|
sb.append('\n');
|
|
break;
|
|
case 'f':
|
|
sb.append('\f');
|
|
break;
|
|
case 'r':
|
|
sb.append('\r');
|
|
break;
|
|
case 'u':
|
|
sb.append((char) Integer.parseInt(next(4), 16));
|
|
break;
|
|
case '"':
|
|
case '\'':
|
|
case '\\':
|
|
case '/':
|
|
sb.append(c);
|
|
break;
|
|
default:
|
|
throw syntaxError("Illegal escape.");
|
|
}
|
|
break;
|
|
default:
|
|
if (c == quote) {
|
|
return sb.toString();
|
|
}
|
|
sb.append(c);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get the text up but not including the specified character or the end of line, whichever comes first.
|
|
*
|
|
* @param d A delimiter character.
|
|
* @return A string.
|
|
*/
|
|
public String nextTo(char d) throws JSONException {
|
|
StringBuilder sb = new StringBuilder();
|
|
for (;;) {
|
|
char c = next();
|
|
if (c == d || c == 0 || c == '\n' || c == '\r') {
|
|
if (c != 0) {
|
|
back();
|
|
}
|
|
return sb.toString().trim();
|
|
}
|
|
sb.append(c);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get the text up but not including one of the specified delimiter characters or the end of line, whichever comes
|
|
* first.
|
|
*
|
|
* @param delimiters A set of delimiter characters.
|
|
* @return A string, trimmed.
|
|
*/
|
|
public String nextTo(String delimiters) throws JSONException {
|
|
char c;
|
|
StringBuilder sb = new StringBuilder();
|
|
for (;;) {
|
|
c = next();
|
|
if (delimiters.indexOf(c) >= 0 || c == 0 || c == '\n' || c == '\r') {
|
|
if (c != 0) {
|
|
back();
|
|
}
|
|
return sb.toString().trim();
|
|
}
|
|
sb.append(c);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get the next value. The value can be a Boolean, Double, Integer, JSONArray, JSONObject, Long, or String, or the
|
|
* JSONObject.NULL object.
|
|
*
|
|
* @throws JSONException If syntax error.
|
|
*
|
|
* @return An object.
|
|
*/
|
|
public Object nextValue() throws JSONException {
|
|
char c = nextClean();
|
|
String s;
|
|
|
|
switch (c) {
|
|
case '"':
|
|
case '\'':
|
|
return nextString(c);
|
|
case '{':
|
|
back();
|
|
return new JSONObject(this);
|
|
case '[':
|
|
case '(':
|
|
back();
|
|
return new JSONArray(this);
|
|
}
|
|
|
|
/*
|
|
* Handle unquoted text. This could be the values true, false, or null, or it can be a number. An implementation
|
|
* (such as this one) is allowed to also accept non-standard forms.
|
|
*
|
|
* Accumulate characters until we reach the end of the text or a formatting character.
|
|
*/
|
|
|
|
StringBuilder sb = new StringBuilder();
|
|
while (c >= ' ' && ",:]}/\\\"[{;=#".indexOf(c) < 0) {
|
|
sb.append(c);
|
|
c = next();
|
|
}
|
|
back();
|
|
|
|
s = sb.toString().trim();
|
|
if (s.equals("")) {
|
|
throw syntaxError("Missing value");
|
|
}
|
|
return JSONObject.stringToValue(s);
|
|
}
|
|
|
|
/**
|
|
* Skip characters until the next character is the requested character. If the requested character is not found, no
|
|
* characters are skipped.
|
|
*
|
|
* @param to A character to skip to.
|
|
* @return The requested character, or zero if the requested character is not found.
|
|
*/
|
|
public char skipTo(char to) throws JSONException {
|
|
char c;
|
|
try {
|
|
int startIndex = this.index;
|
|
int startCharacter = this.character;
|
|
int startLine = this.line;
|
|
reader.mark(Integer.MAX_VALUE);
|
|
do {
|
|
c = next();
|
|
if (c == 0) {
|
|
reader.reset();
|
|
this.index = startIndex;
|
|
this.character = startCharacter;
|
|
this.line = startLine;
|
|
return c;
|
|
}
|
|
} while (c != to);
|
|
} catch (IOException exc) {
|
|
throw new JSONException(exc);
|
|
}
|
|
|
|
back();
|
|
return c;
|
|
}
|
|
|
|
/**
|
|
* Make a JSONException to signal a syntax error.
|
|
*
|
|
* @param message The error message.
|
|
* @return A JSONException object, suitable for throwing
|
|
*/
|
|
public JSONException syntaxError(String message) {
|
|
return new JSONException(message + toString());
|
|
}
|
|
|
|
/**
|
|
* Make a printable string of this JSONTokener.
|
|
*
|
|
* @return " at {index} [character {character} line {line}]"
|
|
*/
|
|
public String toString() {
|
|
return " at " + index + " [character " + this.character + " line " + this.line + "]";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* The <code>JSONString</code> interface allows a <code>toJSONString()</code> method so that a class can change the
|
|
* behavior of <code>JSONObject.toString()</code>, <code>JSONArray.toString()</code>, and <code>JSONWriter.value(</code>
|
|
* Object<code>)</code>. The <code>toJSONString</code> method will be used instead of the default behavior of using the
|
|
* Object's <code>toString()</code> method and quoting the result.
|
|
*/
|
|
interface JSONString {
|
|
|
|
/**
|
|
* The <code>toJSONString</code> method allows a class to produce its own JSON serialization.
|
|
*
|
|
* @return A strictly syntactically correct JSON text.
|
|
*/
|
|
public String toJSONString();
|
|
}
|