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get and opt methods for accessing the
* values by name, and put methods for adding or replacing values
* by name. The values can be any of these types: Boolean,
* JSONArray, JSONObject, Number,
* String, or the JSONObject.NULL object. A JSONObject
* constructor can be used to convert an external form JSON text into an
* internal form whose values can be retrieved with the get and
* opt methods, or to convert values into a JSON text using the
* put and toString methods. A get method
* returns a value if one can be found, and throws an exception if one cannot be
* found. An opt method returns a default value instead of throwing
* an exception, and so is useful for obtaining optional values.
*
* The generic get() and opt() methods return an
* object, which you can cast or query for type. There are also typed
* get and opt methods that do type checking and type
* coercion for you. The opt methods differ from the get methods in that they do
* not throw. Instead, they return a specified value, such as null.
*
* The put methods add or replace values in an object. For example,
*
*
* myString = new JSONObject().put("JSON", "Hello, World!").toString();
*
*
* produces the string {"JSON": "Hello, World"}.
*
* The texts produced by the toString methods strictly conform to
* the JSON syntax rules. The constructors are more forgiving in the texts they
* will accept:
*
, (comma) may appear just
* before the closing brace.' (single
* quote).{ } [ ] / \ : , = ; # and if they do not look like numbers and
* if they are not the reserved words true, false, or
* null.= or {@code =>} as well as by
* :.; (semicolon) as
* well as by , (comma).NULL object than to use Java's null value.
* JSONObject.NULL.equals(null) returns true.
* JSONObject.NULL.toString() returns "null".
*/
public static final Object NULL = new Null();
/**
* Construct an empty JSONObject.
* @nowebref
*/
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.
// */
// public JSONObject(JSONObject jo, String[] names) {
// this();
// for (int i = 0; i < names.length; i += 1) {
// try {
// this.putOnce(names[i], jo.opt(names[i]));
// } catch (Exception ignore) {
// }
// }
// }
/**
* @nowebref
*/
public JSONObject(Reader reader) {
this(new JSONTokener(reader));
}
/**
* Construct a JSONObject from a JSONTokener.
* @param x A JSONTokener object containing the source string.
* @throws RuntimeException If there is a syntax error in the source string
* or a duplicated key.
*/
protected JSONObject(JSONTokener x) {
this();
char c;
String key;
if (x.nextClean() != '{') {
throw new RuntimeException("A JSONObject text must begin with '{'");
}
for (;;) {
c = x.nextClean();
switch (c) {
case 0:
throw new RuntimeException("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 new RuntimeException("Expected a ':' after a key");
}
this.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 new RuntimeException("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.
*/
protected JSONObject(HashMap map) {
this.map = new HashMap();
if (map != null) {
Iterator i = map.entrySet().iterator();
while (i.hasNext()) {
Map.Entry e = (Map.Entry) i.next();
Object value = e.getValue();
if (value != null) {
map.put((String) e.getKey(), wrap(value));
}
}
}
}
/**
* @nowebref
*/
public JSONObject(IntDict dict) {
map = new HashMap();
for (int i = 0; i < dict.size(); i++) {
setInt(dict.key(i), dict.value(i));
}
}
/**
* @nowebref
*/
public JSONObject(FloatDict dict) {
map = new HashMap();
for (int i = 0; i < dict.size(); i++) {
setFloat(dict.key(i), dict.value(i));
}
}
/**
* @nowebref
*/
public JSONObject(StringDict dict) {
map = new HashMap();
for (int i = 0; i < dict.size(); i++) {
setString(dict.key(i), dict.value(i));
}
}
/**
* Construct a JSONObject from an Object using bean getters.
* It reflects on all of the public methods of the object.
* For each of the methods with no parameters and a name starting
* with "get" or "is" followed by an uppercase letter,
* the method is invoked, and a key and the value returned from the getter method
* are put into the new JSONObject.
*
* The key is formed by removing the "get" or "is" prefix.
* If the second remaining character is not upper case, then the first
* character is converted to lower case.
*
* For example, if an object has a method named "getName", and
* if the result of calling object.getName() is "Larry Fine",
* then the JSONObject will contain "name": "Larry Fine".
*
* @param bean An object that has getter methods that should be used
* to make a JSONObject.
*/
protected JSONObject(Object bean) {
this();
this.populateMap(bean);
}
// holding off on this method until we decide on how to handle reflection
// /**
// * Construct a JSONObject from an Object, using reflection to find the
// * public members. The resulting JSONObject's keys will be the strings
// * from the names array, and the values will be the field values associated
// * with those keys in the object. If a key is not found or not visible,
// * then it will not be copied into the new JSONObject.
// * @param object An object that has fields that should be used to make a
// * JSONObject.
// * @param names An array of strings, the names of the fields to be obtained
// * from the object.
// */
// public JSONObject(Object object, String names[]) {
// this();
// Class c = object.getClass();
// for (int i = 0; i < names.length; i += 1) {
// String name = names[i];
// try {
// this.putOpt(name, c.getField(name).get(object));
// } catch (Exception ignore) {
// }
// }
// }
/**
* Construct a JSONObject from a source JSON text string.
* This is the most commonly used JSONObject constructor.
* @param source A string beginning
* with { (left brace) and ending
* with } (right brace).
* @exception RuntimeException If there is a syntax error in the source
* string or a duplicated key.
*/
static public JSONObject parse(String source) {
return new JSONObject(new JSONTokener(source));
}
// /**
// * Construct a JSONObject from a ResourceBundle.
// * @param baseName The ResourceBundle base name.
// * @param locale The Locale to load the ResourceBundle for.
// * @throws JSONException If any JSONExceptions are detected.
// */
// public JSON(String baseName, Locale locale) {
// this();
// ResourceBundle bundle = ResourceBundle.getBundle(baseName, locale,
// Thread.currentThread().getContextClassLoader());
//
// // Iterate through the keys in the bundle.
//
// Enumeration keys = bundle.getKeys();
// while (keys.hasMoreElements()) {
// Object key = keys.nextElement();
// if (key instanceof String) {
//
// // Go through the path, ensuring that there is a nested JSONObject for each
// // segment except the last. Add the value using the last segment's name into
// // the deepest nested JSONObject.
//
// String[] path = ((String)key).split("\\.");
// int last = path.length - 1;
// JSON target = this;
// for (int i = 0; i < last; i += 1) {
// String segment = path[i];
// JSON nextTarget = target.optJSONObject(segment);
// if (nextTarget == null) {
// nextTarget = new JSON();
// target.put(segment, nextTarget);
// }
// target = nextTarget;
// }
// target.put(path[last], bundle.getString((String)key));
// }
// }
// }
// /**
// * Accumulate values under a key. It is similar to the put method except
// * that if there is already an object stored under the key then a
// * JSONArray is stored under the key to hold all of the accumulated values.
// * If there is already a JSONArray, then the new value is appended to it.
// * In contrast, the put method replaces the previous value.
// *
// * If only one value is accumulated that is not a JSONArray, then the
// * result will be the same as using put. But if multiple values are
// * accumulated, then the result will be like append.
// * @param key A key string.
// * @param value An object to be accumulated under the key.
// * @return this.
// * @throws JSONException If the value is an invalid number
// * or if the key is null.
// */
// public JSONObject accumulate(
// String key,
// Object value
// ) throws JSONException {
// testValidity(value);
// Object object = this.opt(key);
// if (object == null) {
// this.put(key, value instanceof JSONArray
// ? new JSONArray().put(value)
// : value);
// } else if (object instanceof JSONArray) {
// ((JSONArray)object).put(value);
// } else {
// this.put(key, new JSONArray().put(object).put(value));
// }
// return this;
// }
// /**
// * Append values to the array under a key. If the key does not exist in the
// * JSONObject, then the key is put in the JSONObject with its value being a
// * JSONArray containing the value parameter. If the key was already
// * associated with a JSONArray, then the value parameter is appended to it.
// * @param key A key string.
// * @param value An object to be accumulated under the key.
// * @return this.
// * @throws JSONException If the key is null or if the current value
// * associated with the key is not a JSONArray.
// */
// public JSONObject append(String key, Object value) throws JSONException {
// testValidity(value);
// Object object = this.opt(key);
// if (object == null) {
// this.put(key, new JSONArray().put(value));
// } else if (object instanceof JSONArray) {
// this.put(key, ((JSONArray)object).put(value));
// } else {
// throw new JSONException("JSONObject[" + key +
// "] is not a JSONArray.");
// }
// return this;
// }
/**
* Produce a string from a double. The string "null" will be returned if
* the number is not finite.
* @param d A double.
* @return A String.
*/
static protected String doubleToString(double d) {
if (Double.isInfinite(d) || Double.isNaN(d)) {
return "null";
}
// Shave off trailing zeros and decimal point, if possible.
String string = Double.toString(d);
if (string.indexOf('.') > 0 && string.indexOf('e') < 0 &&
string.indexOf('E') < 0) {
while (string.endsWith("0")) {
string = string.substring(0, string.length() - 1);
}
if (string.endsWith(".")) {
string = string.substring(0, string.length() - 1);
}
}
return string;
}
/**
* Get the value object associated with a key.
*
* @param key A key string.
* @return The object associated with the key.
* @throws RuntimeException if the key is not found.
*/
public Object get(String key) {
if (key == null) {
throw new RuntimeException("JSONObject.get(null) called");
}
Object object = this.opt(key);
if (object == null) {
// Adding for rev 0257 in line with other p5 api
return null;
}
if (object == null) {
throw new RuntimeException("JSONObject[" + quote(key) + "] not found");
}
return object;
}
/**
* Gets the String associated with a key
*
* @webref jsonobject:method
* @brief Gets the string value associated with a key
* @param key a key string
* @return A string which is the value.
* @throws RuntimeException if there is no string value for the key.
* @see JSONObject#getInt(String)
* @see JSONObject#getFloat(String)
* @see JSONObject#getBoolean(String)
*/
public String getString(String key) {
Object object = this.get(key);
if (object == null) {
// Adding for rev 0257 in line with other p5 api
return null;
}
if (object instanceof String) {
return (String)object;
}
throw new RuntimeException("JSONObject[" + quote(key) + "] is not a string");
}
/**
* 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 getString(String key, String defaultValue) {
Object object = this.opt(key);
return NULL.equals(object) ? defaultValue : object.toString();
}
/**
* Gets the int value associated with a key
*
* @webref jsonobject:method
* @brief Gets the int value associated with a key
* @param key A key string.
* @return The integer value.
* @throws RuntimeException if the key is not found or if the value cannot
* be converted to an integer.
* @see JSONObject#getFloat(String)
* @see JSONObject#getString(String)
* @see JSONObject#getBoolean(String)
*/
public int getInt(String key) {
Object object = this.get(key);
if (object == null) {
throw new RuntimeException("JSONObject[" + quote(key) + "] not found");
}
try {
return object instanceof Number ?
((Number)object).intValue() : Integer.parseInt((String)object);
} catch (Exception e) {
throw new RuntimeException("JSONObject[" + quote(key) + "] is not an int.");
}
}
/**
* 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 getInt(String key, int defaultValue) {
try {
return this.getInt(key);
} catch (Exception e) {
return defaultValue;
}
}
/**
* Get the long value associated with a key.
*
* @param key A key string.
* @return The long value.
* @throws RuntimeException if the key is not found or if the value cannot
* be converted to a long.
*/
public long getLong(String key) {
Object object = this.get(key);
try {
return object instanceof Number
? ((Number)object).longValue()
: Long.parseLong((String)object);
} catch (Exception e) {
throw new RuntimeException("JSONObject[" + quote(key) + "] is not a long.", e);
}
}
/**
* 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 getLong(String key, long defaultValue) {
try {
return this.getLong(key);
} catch (Exception e) {
return defaultValue;
}
}
/**
* @webref jsonobject:method
* @brief Gets the float value associated with a key
* @param key a key string
* @see JSONObject#getInt(String)
* @see JSONObject#getString(String)
* @see JSONObject#getBoolean(String)
*/
public float getFloat(String key) {
return (float) getDouble(key);
}
public float getFloat(String key, float defaultValue) {
try {
return getFloat(key);
} catch (Exception e) {
return defaultValue;
}
}
/**
* Get the double value associated with a key.
* @param key A key string.
* @return The numeric value.
* @throws RuntimeException 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) {
Object object = this.get(key);
try {
return object instanceof Number
? ((Number)object).doubleValue()
: Double.parseDouble((String)object);
} catch (Exception e) {
throw new RuntimeException("JSONObject[" + quote(key) + "] is not a number.");
}
}
/**
* 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 getDouble(String key, double defaultValue) {
try {
return this.getDouble(key);
} catch (Exception e) {
return defaultValue;
}
}
/**
* Get the boolean value associated with a key.
*
* @webref jsonobject:method
* @brief Gets the boolean value associated with a key
* @param key a key string
* @return The truth.
* @throws RuntimeException if the value is not a Boolean or the String "true" or "false".
* @see JSONObject#getInt(String)
* @see JSONObject#getFloat(String)
* @see JSONObject#getString(String)
*/
public boolean getBoolean(String key) {
Object object = this.get(key);
if (object.equals(Boolean.FALSE) ||
(object instanceof String &&
((String)object).equalsIgnoreCase("false"))) {
return false;
} else if (object.equals(Boolean.TRUE) ||
(object instanceof String &&
((String)object).equalsIgnoreCase("true"))) {
return true;
}
throw new RuntimeException("JSONObject[" + quote(key) + "] is not a Boolean.");
}
/**
* 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 getBoolean(String key, boolean defaultValue) {
try {
return this.getBoolean(key);
} catch (Exception e) {
return defaultValue;
}
}
/**
* Get the JSONArray value associated with a key.
*
* @webref jsonobject:method
* @brief Gets the JSONArray value associated with a key
* @param key a key string
* @return A JSONArray which is the value, or null if not present
* @throws RuntimeException if the value is not a JSONArray.
* @see JSONObject#getJSONObject(String)
* @see JSONObject#setJSONObject(String, JSONObject)
* @see JSONObject#setJSONArray(String, JSONArray)
*/
public JSONArray getJSONArray(String key) {
Object object = this.get(key);
if (object == null) {
return null;
}
if (object instanceof JSONArray) {
return (JSONArray)object;
}
throw new RuntimeException("JSONObject[" + quote(key) + "] is not a JSONArray.");
}
/**
* Get the JSONObject value associated with a key.
*
* @webref jsonobject:method
* @brief Gets the JSONObject value associated with a key
* @param key a key string
* @return A JSONObject which is the value or null if not available.
* @throws RuntimeException if the value is not a JSONObject.
* @see JSONObject#getJSONArray(String)
* @see JSONObject#setJSONObject(String, JSONObject)
* @see JSONObject#setJSONArray(String, JSONArray)
*/
public JSONObject getJSONObject(String key) {
Object object = this.get(key);
if (object == null) {
return null;
}
if (object instanceof JSONObject) {
return (JSONObject)object;
}
throw new RuntimeException("JSONObject[" + quote(key) + "] is not a JSONObject.");
}
// /**
// * 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 iterator = jo.keys();
// String[] names = new String[length];
// int i = 0;
// while (iterator.hasNext()) {
// names[i] = (String)iterator.next();
// i += 1;
// }
// return names;
// }
//
//
// /**
// * Get an array of field names from an Object.
// *
// * @return An array of field names, or null if there are no names.
// */
// public static String[] getNames(Object object) {
// if (object == null) {
// return null;
// }
// Class klass = object.getClass();
// Field[] fields = klass.getFields();
// int length = fields.length;
// if (length == 0) {
// return null;
// }
// String[] names = new String[length];
// for (int i = 0; i < length; i += 1) {
// names[i] = fields[i].getName();
// }
// return names;
// }
/**
* Determine if the JSONObject contains a specific key.
* @param key A key string.
* @return true if the key exists in the JSONObject.
*/
public boolean hasKey(String key) {
return 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 JSON increment(String key) {
// Object value = this.opt(key);
// if (value == null) {
// this.put(key, 1);
// } else if (value instanceof Integer) {
// this.put(key, ((Integer)value).intValue() + 1);
// } else if (value instanceof Long) {
// this.put(key, ((Long)value).longValue() + 1);
// } else if (value instanceof Double) {
// this.put(key, ((Double)value).doubleValue() + 1);
// } else if (value instanceof Float) {
// this.put(key, ((Float)value).floatValue() + 1);
// } else {
// throw new RuntimeException("Unable to increment [" + quote(key) + "].");
// }
// return this;
// }
/**
* Determine if the value associated with the key is null or if there is
* no value.
*
* @webref
* @param key A key string.
* @return true if there is no value associated with the key or if
* the value is the JSONObject.NULL object.
*/
public boolean isNull(String key) {
return JSONObject.NULL.equals(this.opt(key));
}
/**
* Get an enumeration of the keys of the JSONObject.
*
* @return An iterator of the keys.
*/
public Iterator keyIterator() {
// return this.keySet().iterator();
return map.keySet().iterator();
}
/**
* Get a set of keys of the JSONObject.
*
* @return A keySet.
*/
public Set keys() {
return this.map.keySet();
}
/**
* Get the number of keys stored in the JSONObject.
*
* @return The number of keys in the JSONObject.
*/
public int size() {
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 = this.keys();
// while (keys.hasNext()) {
// ja.append(keys.next());
// }
// return ja.size() == 0 ? null : ja;
// }
/**
* Produce a string from a Number.
* @param number A Number
* @return A String.
* @throws RuntimeException If number is null or a non-finite number.
*/
private static String numberToString(Number number) {
if (number == null) {
throw new RuntimeException("Null pointer");
}
testValidity(number);
// Shave off trailing zeros and decimal point, if possible.
String string = number.toString();
if (string.indexOf('.') > 0 && string.indexOf('e') < 0 &&
string.indexOf('E') < 0) {
while (string.endsWith("0")) {
string = string.substring(0, string.length() - 1);
}
if (string.endsWith(".")) {
string = string.substring(0, string.length() - 1);
}
}
return string;
}
/**
* Get an optional value associated with a key.
* @param key A key string.
* @return An object which is the value, or null if there is no value.
*/
private 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.
// */
// private boolean optBoolean(String key) {
// return this.optBoolean(key, false);
// }
// /**
// * 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.
// */
// private double optDouble(String key) {
// return this.optDouble(key, Double.NaN);
// }
// /**
// * 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.
// */
// private int optInt(String key) {
// return this.optInt(key, 0);
// }
// /**
// * 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.
// */
// private JSONArray optJSONArray(String key) {
// Object o = this.opt(key);
// return o instanceof JSONArray ? (JSONArray)o : null;
// }
// /**
// * Get an optional JSONObject associated with a key.
// * It returns null if there is no such key, or if its value is not a
// * JSONObject.
// *
// * @param key A key string.
// * @return A JSONObject which is the value.
// */
// private JSONObject optJSONObject(String key) {
// Object object = this.opt(key);
// return object instanceof JSONObject ? (JSONObject)object : null;
// }
// /**
// * Get an optional long value associated with a key,
// * or zero if there is no such key or if the value is not a number.
// * If the value is a string, an attempt will be made to evaluate it as
// * a number.
// *
// * @param key A key string.
// * @return An object which is the value.
// */
// public long optLong(String key) {
// return this.optLong(key, 0);
// }
// /**
// * Get an optional string associated with a key.
// * It returns an empty string if there is no such key. If the value is not
// * a string and is not null, then it is converted to a string.
// *
// * @param key A key string.
// * @return A string which is the value.
// */
// public String optString(String key) {
// return this.optString(key, "");
// }
private void populateMap(Object bean) {
Class klass = bean.getClass();
// If klass is a System class then set includeSuperClass to false.
boolean includeSuperClass = klass.getClassLoader() != null;
Method[] methods = includeSuperClass
? klass.getMethods()
: klass.getDeclaredMethods();
for (int i = 0; i < methods.length; i += 1) {
try {
Method method = methods[i];
if (Modifier.isPublic(method.getModifiers())) {
String name = method.getName();
String key = "";
if (name.startsWith("get")) {
if ("getClass".equals(name) ||
"getDeclaringClass".equals(name)) {
key = "";
} else {
key = name.substring(3);
}
} else if (name.startsWith("is")) {
key = name.substring(2);
}
if (key.length() > 0 &&
Character.isUpperCase(key.charAt(0)) &&
method.getParameterTypes().length == 0) {
if (key.length() == 1) {
key = key.toLowerCase();
} else if (!Character.isUpperCase(key.charAt(1))) {
key = key.substring(0, 1).toLowerCase() +
key.substring(1);
}
Object result = method.invoke(bean, (Object[])null);
if (result != null) {
this.map.put(key, wrap(result));
}
}
}
} catch (Exception ignore) {
}
}
}
/**
* @webref jsonobject:method
* @brief Put a key/String pair in the JSONObject
* @param key a key string
* @param value the value to assign
* @see JSONObject#setInt(String, int)
* @see JSONObject#setFloat(String, float)
* @see JSONObject#setBoolean(String, boolean)
*/
public JSONObject setString(String key, String value) {
return put(key, value);
}
/**
* Put a key/int pair in the JSONObject.
*
* @webref jsonobject:method
* @brief Put a key/int pair in the JSONObject
* @param key a key string
* @param value the value to assign
* @return this.
* @throws RuntimeException If the key is null.
* @see JSONObject#setFloat(String, float)
* @see JSONObject#setString(String, String)
* @see JSONObject#setBoolean(String, boolean)
*/
public JSONObject setInt(String key, int value) {
this.put(key, Integer.valueOf(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 RuntimeException If the key is null.
*/
public JSONObject setLong(String key, long value) {
this.put(key, Long.valueOf(value));
return this;
}
/**
* @webref jsonobject:method
* @brief Put a key/float pair in the JSONObject
* @param key a key string
* @param value the value to assign
* @throws RuntimeException If the key is null or if the number is NaN or infinite.
* @see JSONObject#setInt(String, int)
* @see JSONObject#setString(String, String)
* @see JSONObject#setBoolean(String, boolean)
*/
public JSONObject setFloat(String key, float value) {
this.put(key, new Double(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 RuntimeException If the key is null or if the number is NaN or infinite.
*/
public JSONObject setDouble(String key, double value) {
this.put(key, new Double(value));
return this;
}
/**
* Put a key/boolean pair in the JSONObject.
*
* @webref jsonobject:method
* @brief Put a key/boolean pair in the JSONObject
* @param key a key string
* @param value the value to assign
* @return this.
* @throws RuntimeException If the key is null.
* @see JSONObject#setInt(String, int)
* @see JSONObject#setFloat(String, float)
* @see JSONObject#setString(String, String)
*/
public JSONObject setBoolean(String key, boolean value) {
this.put(key, value ? Boolean.TRUE : Boolean.FALSE);
return this;
}
/**
* @webref jsonobject:method
* @brief Sets the JSONObject value associated with a key
* @param key a key string
* @param value value to assign
* @see JSONObject#setJSONArray(String, JSONArray)
* @see JSONObject#getJSONObject(String)
* @see JSONObject#getJSONArray(String)
*/
public JSONObject setJSONObject(String key, JSONObject value) {
return put(key, value);
}
/**
* @webref jsonobject:method
* @brief Sets the JSONArray value associated with a key
* @param key a key string
* @param value value to assign
* @see JSONObject#setJSONObject(String, JSONObject)
* @see JSONObject#getJSONObject(String)
* @see JSONObject#getJSONArray(String)
*/
public JSONObject setJSONArray(String key, JSONArray value) {
return put(key, value);
}
// /**
// * 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) {
// this.put(key, new JSONArray(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, HashMap value) {
// public JSONObject put(String key, Map value) {
// this.put(key, new JSONObject(value));
// return this;
// }
/**
* Put a key/value pair in the JSONObject. If the value is null,
* then the key will be removed from the JSONObject if it is present.
* @param key A key string.
* @param value An object which is the value. It should be of one of these
* types: Boolean, Double, Integer, JSONArray, JSONObject, Long, String,
* or the JSONObject.NULL object.
* @return this.
* @throws RuntimeException If the value is non-finite number
* or if the key is null.
*/
public JSONObject put(String key, Object value) {
String pooled;
if (key == null) {
throw new RuntimeException("Null key.");
}
if (value != null) {
testValidity(value);
pooled = (String)keyPool.get(key);
if (pooled == null) {
if (keyPool.size() >= keyPoolSize) {
keyPool = new HashMap(keyPoolSize);
}
keyPool.put(key, key);
} else {
key = pooled;
}
this.map.put(key, value);
} else {
this.remove(key);
}
return this;
}
/**
* Put a key/value pair in the JSONObject, but only if the key and the
* value are both non-null, and only if there is not already a member
* with that name.
* @param key
* @param value
* @return {@code this}.
* @throws RuntimeException if the key is a duplicate, or if
* {@link #put(String,Object)} throws.
*/
private JSONObject putOnce(String key, Object value) {
if (key != null && value != null) {
if (this.opt(key) != null) {
throw new RuntimeException("Duplicate key \"" + key + "\"");
}
this.put(key, value);
}
return this;
}
// /**
// * Put a key/value pair in the JSONObject, but only if the
// * key and the value are both non-null.
// * @param key A key string.
// * @param value An object which is the value. It should be of one of these
// * types: Boolean, Double, Integer, JSONArray, JSONObject, Long, String,
// * or the JSONObject.NULL object.
// * @return this.
// * @throws JSONException If the value is a non-finite number.
// */
// public JSONObject putOpt(String key, Object value) {
// if (key != null && value != null) {
// this.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 = '\u2000' && c < '\u2100')) {
w.write("\\u");
hhhh = Integer.toHexString(c);
w.write("0000", 0, 4 - hhhh.length());
w.write(hhhh);
} else {
w.write(c);
}
}
}
w.write('"');
return w;
}
/**
* Remove a name and its value, if present.
* @param key The name to be removed.
* @return The value that was associated with the name,
* or null if there was no value.
*/
public Object remove(String key) {
return this.map.remove(key);
}
/**
* Try to convert a string into a number, boolean, or null. If the string
* can't be converted, return the string.
* @param string A String.
* @return A simple JSON value.
*/
static protected Object stringToValue(String string) {
Double d;
if (string.equals("")) {
return string;
}
if (string.equalsIgnoreCase("true")) {
return Boolean.TRUE;
}
if (string.equalsIgnoreCase("false")) {
return Boolean.FALSE;
}
if (string.equalsIgnoreCase("null")) {
return JSONObject.NULL;
}
/*
* If it might be a number, try converting it.
* If a number cannot be produced, then the value will just
* be a string. Note that the 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 = string.charAt(0);
if ((b >= '0' && b -1 ||
string.indexOf('e') > -1 || string.indexOf('E') > -1) {
d = Double.valueOf(string);
if (!d.isInfinite() && !d.isNaN()) {
return d;
}
} else {
Long myLong = Long.valueOf(string);
if (myLong.longValue() == myLong.intValue()) {
return Integer.valueOf(myLong.intValue());
} else {
return myLong;
}
}
} catch (Exception ignore) {
}
}
return string;
}
/**
* Throw an exception if the object is a NaN or infinite number.
* @param o The object to test. If not Float or Double, accepted without
* exceptions.
* @throws RuntimeException If o is infinite or NaN.
*/
static protected void testValidity(Object o) {
if (o != null) {
if (o instanceof Double) {
if (((Double)o).isInfinite() || ((Double)o).isNaN()) {
throw new RuntimeException(
"JSON does not allow non-finite numbers.");
}
} else if (o instanceof Float) {
if (((Float)o).isInfinite() || ((Float)o).isNaN()) {
throw new RuntimeException(
"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) {
// if (names == null || names.size() == 0) {
// return null;
// }
// JSONArray ja = new JSONArray();
// for (int i = 0; i < names.size(); i += 1) {
// ja.append(this.opt(names.getString(i)));
// }
// return ja;
// }
// protected boolean save(OutputStream output) {
// return save(PApplet.createWriter(output));
// }
public boolean save(File file, String options) {
PrintWriter writer = PApplet.createWriter(file);
boolean success = write(writer, options);
writer.close();
return success;
}
public boolean write(PrintWriter output) {
return write(output, null);
}
public boolean write(PrintWriter output, String options) {
int indentFactor = 2;
if (options != null) {
String[] opts = PApplet.split(options, ',');
for (String opt : opts) {
if (opt.equals("compact")) {
indentFactor = -1;
} else if (opt.startsWith("indent=")) {
indentFactor = PApplet.parseInt(opt.substring(7), -2);
if (indentFactor == -2) {
throw new IllegalArgumentException("Could not read a number from " + opt);
}
} else {
System.err.println("Ignoring " + opt);
}
}
}
output.print(format(indentFactor));
output.flush();
return true;
}
/**
* Return the JSON data formatted with two spaces for indents.
* Chosen to do this since it's the most common case (e.g. with println()).
* Same as format(2). Use the format() function for more options.
*/
@Override
public String toString() {
try {
return format(2);
} catch (Exception e) {
return null;
}
}
/**
* Make a prettyprinted JSON text of this JSONObject.
*
* Warning: This method assumes that the data structure is acyclical.
* @param indentFactor The number of spaces to add to each level of
* indentation.
* @return a printable, displayable, portable, transmittable
* representation of the object, beginning
* with { (left brace) and ending
* with } (right brace).
* @throws RuntimeException If the object contains an invalid number.
*/
public String format(int indentFactor) {
StringWriter w = new StringWriter();
synchronized (w.getBuffer()) {
return this.writeInternal(w, indentFactor, 0).toString();
}
}
/**
* Make a JSON text of an Object value. If the object has an
* value.toJSONString() method, then that method will be used to produce
* the JSON text. The method is required to produce a strictly
* conforming text. If the object does not contain a toJSONString
* method (which is the most common case), then a text will be
* produced by other means. If the value is an array or Collection,
* then a JSONArray will be made from it and its toJSONString method
* will be called. If the value is a MAP, then a JSONObject will be made
* from it and its toJSONString method will be called. Otherwise, the
* value's toString method will be called, and the result will be quoted.
*
*
* Warning: This method assumes that the data structure is acyclical.
* @param value The value to be serialized.
* @return a printable, displayable, transmittable
* representation of the object, beginning
* with { (left brace) and ending
* with } (right brace).
* @throws RuntimeException If the value is or contains an invalid number.
*/
static protected String valueToString(Object value) {
if (value == null || value.equals(null)) {
return "null";
}
// if (value instanceof JSONString) {
// Object object;
// try {
// object = ((JSONString)value).toJSONString();
// } catch (Exception e) {
// throw new RuntimeException(e);
// }
// if (object instanceof String) {
// return (String)object;
// }
// throw new RuntimeException("Bad value from toJSONString: " + object);
// }
if (value instanceof Number) {
return numberToString((Number) value);
}
if (value instanceof Boolean || value instanceof JSONObject ||
value instanceof JSONArray) {
return value.toString();
}
if (value instanceof Map) {
return new JSONObject(value).toString();
}
if (value instanceof Collection) {
return new JSONArray(value).toString();
}
if (value.getClass().isArray()) {
return new JSONArray(value).toString();
}
return quote(value.toString());
}
/**
* Wrap an object, if necessary. If the object is null, return the NULL
* object. If it is an array or collection, wrap it in a JSONArray. If
* it is a map, wrap it in a JSONObject. If it is a standard property
* (Double, String, et al) then it is already wrapped. Otherwise, if it
* comes from one of the java packages, turn it into a string. And if
* it doesn't, try to wrap it in a JSONObject. If the wrapping fails,
* then null is returned.
*
* @param object The object to wrap
* @return The wrapped value
*/
static protected Object wrap(Object object) {
try {
if (object == null) {
return NULL;
}
if (object instanceof JSONObject || object instanceof JSONArray ||
NULL.equals(object) || /*object instanceof JSONString ||*/
object instanceof Byte || object instanceof Character ||
object instanceof Short || object instanceof Integer ||
object instanceof Long || object instanceof Boolean ||
object instanceof Float || object instanceof Double ||
object instanceof String) {
return object;
}
if (object instanceof Collection) {
return new JSONArray(object);
}
if (object.getClass().isArray()) {
return new JSONArray(object);
}
if (object instanceof Map) {
return new JSONObject(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.
// *
// * Warning: This method assumes that the data structure is acyclical. // * // * @return The writer. // * @throws JSONException // */ // protected Writer write(Writer writer) { // return this.write(writer, 0, 0); // } static final Writer writeValue(Writer writer, Object value, int indentFactor, int indent) throws IOException { if (value == null || value.equals(null)) { writer.write("null"); } else if (value instanceof JSONObject) { ((JSONObject) value).writeInternal(writer, indentFactor, indent); } else if (value instanceof JSONArray) { ((JSONArray) value).writeInternal(writer, indentFactor, indent); } else if (value instanceof Map) { new JSONObject(value).writeInternal(writer, indentFactor, indent); } else if (value instanceof Collection) { new JSONArray(value).writeInternal(writer, indentFactor, indent); } else if (value.getClass().isArray()) { new JSONArray(value).writeInternal(writer, indentFactor, indent); } else if (value instanceof Number) { writer.write(numberToString((Number) value)); } else if (value instanceof Boolean) { writer.write(value.toString()); /* } else if (value instanceof JSONString) { Object o; try { o = ((JSONString) value).toJSONString(); } catch (Exception e) { throw new RuntimeException(e); } writer.write(o != null ? o.toString() : quote(value.toString())); */ } else { quote(value.toString(), writer); } return writer; } static final void indent(Writer writer, int indent) throws IOException { for (int i = 0; i < indent; i += 1) { writer.write(' '); } } /** * Write the contents of the JSONObject as JSON text to a writer. *
* Warning: This method assumes that the data structure is acyclical. * * @return The writer. * @throws RuntimeException */ protected Writer writeInternal(Writer writer, int indentFactor, int indent) { try { boolean commanate = false; final int length = this.size(); Iterator keys = this.keyIterator(); writer.write('{'); int actualFactor = (indentFactor == -1) ? 0 : indentFactor; if (length == 1) { Object key = keys.next(); writer.write(quote(key.toString())); writer.write(':'); if (actualFactor > 0) { writer.write(' '); } //writeValue(writer, this.map.get(key), actualFactor, indent); writeValue(writer, this.map.get(key), indentFactor, indent); } else if (length != 0) { final int newIndent = indent + actualFactor; while (keys.hasNext()) { Object key = keys.next(); if (commanate) { writer.write(','); } if (indentFactor != -1) { writer.write('\n'); } indent(writer, newIndent); writer.write(quote(key.toString())); writer.write(':'); if (actualFactor > 0) { writer.write(' '); } //writeValue(writer, this.map.get(key), actualFactor, newIndent); writeValue(writer, this.map.get(key), indentFactor, newIndent); commanate = true; } if (indentFactor != -1) { writer.write('\n'); } indent(writer, indent); } writer.write('}'); return writer; } catch (IOException exception) { throw new RuntimeException(exception); } } // // . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . // // // class JSONException extends RuntimeException { // // public JSONException(String message) { // super(message); // } // // public JSONException(Throwable throwable) { // super(throwable); // } // } // . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . // /** // * 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. // */ // static protected int dehexchar(char c) { // if (c >= '0' && c = 'A' && c = 'a' && c = 0 || c == 0 || // c == '\n' || c == '\r') { // if (c != 0) { // this.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() { // char c = this.nextClean(); // String string; // // switch (c) { // case '"': // case '\'': // return this.nextString(c); // case '{': // this.back(); // return new JSONObject(this); // case '[': // this.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. // */ // // StringBuffer sb = new StringBuffer(); // while (c >= ' ' && ",:]}/\\\"[{;=#".indexOf(c) < 0) { // sb.append(c); // c = this.next(); // } // this.back(); // // string = sb.toString().trim(); // if ("".equals(string)) { // throw new RuntimeException("Missing value"); // } // return JSONObject.stringToValue(string); // } // // // /** // * 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) { // char c; // try { // long startIndex = this.index; // long startCharacter = this.character; // long startLine = this.line; // this.reader.mark(1000000); // do { // c = this.next(); // if (c == 0) { // this.reader.reset(); // this.index = startIndex; // this.character = startCharacter; // this.line = startLine; // return c; // } // } while (c != to); // } catch (IOException exc) { // throw new RuntimeException(exc); // } // // this.back(); // return c; // } // // // /** // * Make a printable string of this JSONTokener. // * // * @return " at {index} [character {character} line {line}]" // */ // @Override // public String toString() { // return " at " + this.index + " [character " + this.character + " line " + // this.line + "]"; // } // } }
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