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author	dwinter
date	Wed, 03 Nov 2010 12:18:46 +0100
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--1:000000000000
+:db87c1b7eb6d
+package org.json;
+/*
+Copyright (c) 2002 JSON.org
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+The Software shall be used for Good, not Evil.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+import java.io.IOException;
+import java.io.Writer;
+import java.lang.reflect.Field;
+import java.lang.reflect.Modifier;
+import java.lang.reflect.Method;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+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>&nbsp;<small>(comma)</small> may appear just
+*     before the closing brace.</li>
+* <li>Strings may be quoted with <code>'</code>&nbsp;<small>(single
+*     quote)</small>.</li>
+* <li>Strings do not need to be quoted at all if they do not begin with a quote
+*     or single quote, and if they do not contain leading or trailing spaces,
+*     and if they do not contain any of these characters:
+*     <code>{ } [ ] / \ : , = ; #</code> and if they do not look like numbers
+*     and if they are not the reserved words <code>true</code>,
+*     <code>false</code>, or <code>null</code>.</li>
+* <li>Keys can be followed by <code>=</code> or <code>=></code> as well as
+*     by <code>:</code>.</li>
+* <li>Values can be followed by <code>;</code> <small>(semicolon)</small> as
+*     well as by <code>,</code> <small>(comma)</small>.</li>
+* <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 2009-03-06
+*/
+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.
+* @exception JSONException If a value is a non-finite number or if a name is duplicated.
+*/
+public JSONObject(JSONObject jo, String[] names) throws JSONException {
+this();
+for (int i = 0; i < names.length; i += 1) {
+putOnce(names[i], jo.opt(names[i]));
+}
+}
+/**
+* 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.
+*/
+public JSONObject(Map map) {
+this.map = (map == null) ? new HashMap() : map;
+}
+/**
+* Construct a JSONObject from a Map.
+*
+* Note: Use this constructor when the map contains <key,bean>.
+*
+* @param map - A map with Key-Bean data.
+* @param includeSuperClass - Tell whether to include the super class properties.
+*/
+public JSONObject(Map map, boolean includeSuperClass) {
+this.map = new HashMap();
+if (map != null) {
+Iterator i = map.entrySet().iterator();
+while (i.hasNext()) {
+Map.Entry e = (Map.Entry)i.next();
+if (isStandardProperty(e.getValue().getClass())) {
+this.map.put(e.getKey(), e.getValue());
+} else {
+this.map.put(e.getKey(), new JSONObject(e.getValue(),
+includeSuperClass));
+}
+}
+}
+}
+/**
+* Construct a JSONObject from an Object using bean getters.
+* It reflects on all of the public methods of the object.
+* For each of the methods with no parameters and a name starting
+* with <code>"get"</code> or <code>"is"</code> followed by an uppercase letter,
+* the method is invoked, and a key and the value returned from the getter method
+* are put into the new JSONObject.
+*
+* The key is formed by removing the <code>"get"</code> or <code>"is"</code> prefix.
+* If the second remaining character is not upper case, then the first
+* character is converted to lower case.
+*
+* For example, if an object has a method named <code>"getName"</code>, and
+* if the result of calling <code>object.getName()</code> is <code>"Larry Fine"</code>,
+* then the JSONObject will contain <code>"name": "Larry Fine"</code>.
+*
+* @param bean An object that has getter methods that should be used
+* to make a JSONObject.
+*/
+public JSONObject(Object bean) {
+this();
+populateInternalMap(bean, false);
+}
+/**
+* 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.
+*
+* @param bean An object that has getter methods that should be used
+* to make a JSONObject.
+* @param includeSuperClass If true, include the super class properties.
+*/
+public JSONObject(Object bean, boolean includeSuperClass) {
+this();
+populateInternalMap(bean, includeSuperClass);
+}
+private void populateInternalMap(Object bean, boolean includeSuperClass){
+Class klass = bean.getClass();
+/* If klass.getSuperClass is System class then force includeSuperClass to false. */
+if (klass.getClassLoader() == null) {
+includeSuperClass = false;
+}
+Method[] methods = (includeSuperClass) ?
+klass.getMethods() : klass.getDeclaredMethods();
+for (int i = 0; i < methods.length; i += 1) {
+try {
+Method method = methods[i];
+if (Modifier.isPublic(method.getModifiers())) {
+String name = method.getName();
+String key = "";
+if (name.startsWith("get")) {
+key = name.substring(3);
+} else if (name.startsWith("is")) {
+key = name.substring(2);
+}
+if (key.length() > 0 &&
+Character.isUpperCase(key.charAt(0)) &&
+method.getParameterTypes().length == 0) {
+if (key.length() == 1) {
+key = key.toLowerCase();
+} else if (!Character.isUpperCase(key.charAt(1))) {
+key = key.substring(0, 1).toLowerCase() +
+key.substring(1);
+}
+Object result = method.invoke(bean, (Object[])null);
+if (result == null) {
+map.put(key, NULL);
+} else if (result.getClass().isArray()) {
+map.put(key, new JSONArray(result, includeSuperClass));
+} else if (result instanceof Collection) { // List or Set
+map.put(key, new JSONArray((Collection)result, includeSuperClass));
+} else if (result instanceof Map) {
+map.put(key, new JSONObject((Map)result, includeSuperClass));
+} else if (isStandardProperty(result.getClass())) { // Primitives, String and Wrapper
+map.put(key, result);
+} else {
+if (result.getClass().getPackage().getName().startsWith("java") ||
+result.getClass().getClassLoader() == null) {
+map.put(key, result.toString());
+} else { // User defined Objects
+map.put(key, new JSONObject(result, includeSuperClass));
+}
+}
+}
+}
+} catch (Exception e) {
+throw new RuntimeException(e);
+}
+}
+}
+static boolean isStandardProperty(Class clazz) {
+return clazz.isPrimitive()                  ||
+clazz.isAssignableFrom(Byte.class)      ||
+clazz.isAssignableFrom(Short.class)     ||
+clazz.isAssignableFrom(Integer.class)   ||
+clazz.isAssignableFrom(Long.class)      ||
+clazz.isAssignableFrom(Float.class)     ||
+clazz.isAssignableFrom(Double.class)    ||
+clazz.isAssignableFrom(Character.class) ||
+clazz.isAssignableFrom(String.class)    ||
+clazz.isAssignableFrom(Boolean.class);
+}
+/**
+* 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 e) {
+/* forget about it */
+}
+}
+}
+/**
+* Construct a JSONObject from a source JSON text string.
+* This is the most commonly used JSONObject constructor.
+* @param source    A string beginning
+*  with <code>{</code>&nbsp;<small>(left brace)</small> and ending
+*  with <code>}</code>&nbsp;<small>(right brace)</small>.
+* @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);
+}
+/**
+* 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;
+}
+}
+/**
+* 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;
+}
+/**
+* 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;
+}
+/**
+* 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/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();
+StringBuffer sb = new StringBuffer(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 0- and 0x-
+* conventions. If a number cannot be produced, then the value will just
+* be a string. Note that the 0-, 0x-, plus, and implied string
+* conventions are non-standard. A JSON parser is free to 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') {
+if (s.length() > 2 &&
+(s.charAt(1) == 'x' || s.charAt(1) == 'X')) {
+try {
+return new Integer(Integer.parseInt(s.substring(2),
+16));
+} catch (Exception e) {
+/* Ignore the error */
+}
+} else {
+try {
+return new Integer(Integer.parseInt(s, 8));
+} catch (Exception e) {
+/* Ignore the error */
+}
+}
+}
+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 f) {
+/* Ignore the error */
+}
+}
+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>&nbsp;<small>(left brace)</small> and ending
+*  with <code>}</code>&nbsp;<small>(right brace)</small>.
+*/
+public String toString() {
+try {
+Iterator     keys = keys();
+StringBuffer sb = new StringBuffer("{");
+while (keys.hasNext()) {
+if (sb.length() > 1) {
+sb.append(',');
+}
+Object o = keys.next();
+sb.append(quote(o.toString()));
+sb.append(':');
+sb.append(valueToString(this.map.get(o)));
+}
+sb.append('}');
+return sb.toString();
+} catch (Exception e) {
+return null;
+}
+}
+/**
+* Make a prettyprinted JSON text of this JSONObject.
+* <p>
+* Warning: This method assumes that the data structure is acyclical.
+* @param indentFactor The number of spaces to add to each level of
+*  indentation.
+* @return a printable, displayable, portable, transmittable
+*  representation of the object, beginning
+*  with <code>{</code>&nbsp;<small>(left brace)</small> and ending
+*  with <code>}</code>&nbsp;<small>(right brace)</small>.
+* @throws JSONException If the object contains an invalid number.
+*/
+public String toString(int indentFactor) throws JSONException {
+return toString(indentFactor, 0);
+}
+/**
+* Make a prettyprinted JSON text of this JSONObject.
+* <p>
+* Warning: This method assumes that the data structure is acyclical.
+* @param indentFactor The number of spaces to add to each level of
+*  indentation.
+* @param indent The indentation of the top level.
+* @return a printable, displayable, transmittable
+*  representation of the object, beginning
+*  with <code>{</code>&nbsp;<small>(left brace)</small> and ending
+*  with <code>}</code>&nbsp;<small>(right brace)</small>.
+* @throws JSONException If the object contains an invalid number.
+*/
+String toString(int indentFactor, int indent) throws JSONException {
+int j;
+int n = length();
+if (n == 0) {
+return "{}";
+}
+Iterator     keys = sortedKeys();
+StringBuffer sb = new StringBuffer("{");
+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>&nbsp;<small>(left brace)</small> and ending
+*  with <code>}</code>&nbsp;<small>(right brace)</small>.
+* @throws JSONException If the value is or contains an invalid number.
+*/
+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>&nbsp;<small>(left brace)</small> and ending
+*  with <code>}</code>&nbsp;<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 e) {
+/* forget about it */
+}
+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());
+}
+/**
+* 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 e) {
+throw new JSONException(e);
+}
+}
+}

Mercurial > hg > fulltextSearchServer

comparison lib/org.json_2.0/src/org/json/JSONObject.java @ 0:db87c1b7eb6d