/**
* 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 {
final Object object = this.get(key);
if (object instanceof JSONObject) {
return (JSONObject) object;
}
throw new JSONException("JSONObject[" + JSONObject.quote(key) + "] is not a JSONObject.");
}
/**
* Make a JSON text of an Object value. If the object has an value.toJSONString() method, then
* that method will be used to produce the JSON text. The method is required to produce a strictly
* conforming text. If the object does not contain a toJSONString method (which is the most common
* case), then a text will be produced by other means. If the value is an array or Collection,
* then a JSONArray will be made from it and its toJSONString method will be called. If the value
* is a MAP, then a JSONObject will be made from it and its toJSONString method will be called.
* Otherwise, the value's toString method will be called, and the result will be quoted.
*
* <p>Warning: This method assumes that the data structure is acyclical.
*
* @param value The value to be serialized.
* @return a printable, displayable, transmittable representation of the object, beginning with
* <code>{</code> <small>(left brace)</small> and ending with <code>}</code>
* <small>(right brace)</small>.
* @throws JSONException If the value is or contains an invalid number.
*/
public static String valueToString(Object value) throws JSONException {
if ((value == null) || value.equals(null)) {
return "null";
}
if (value instanceof JSONString) {
Object object;
try {
object = ((JSONString) value).toJSONString();
} catch (final Exception e) {
throw new JSONException(e);
}
if (object instanceof String) {
return (String) object;
}
throw new JSONException("Bad value from toJSONString: " + object);
}
if (value instanceof Number) {
return JSONObject.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 JSONObject.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 commanate = false;
final Iterator keys = this.keys();
writer.write('{');
while (keys.hasNext()) {
if (commanate) {
writer.write(',');
}
final Object key = keys.next();
writer.write(JSONObject.quote(key.toString()));
writer.write(':');
final Object value = this.map.get(key);
if (value instanceof JSONObject) {
((JSONObject) value).write(writer);
} else if (value instanceof JSONArray) {
((JSONArray) value).write(writer);
} else {
writer.write(JSONObject.valueToString(value));
}
commanate = true;
}
writer.write('}');
return writer;
} catch (final IOException exception) {
throw new JSONException(exception);
}
}
/**
* Get the long value associated with a key.
*
* @param key A key string.
* @return The long value.
* @throws JSONException if the key is not found or if the value cannot be converted to a long.
*/
public long getLong(String key) throws JSONException {
final Object object = this.get(key);
try {
return object instanceof Number
? ((Number) object).longValue()
: Long.parseLong((String) object);
} catch (final Exception e) {
throw new JSONException("JSONObject[" + JSONObject.quote(key) + "] is not a long.");
}
}
/**
* Get the int value associated with a key.
*
* @param key A key string.
* @return The integer value.
* @throws JSONException if the key is not found or if the value cannot be converted to an
* integer.
*/
public int getInt(String key) throws JSONException {
final Object object = this.get(key);
try {
return object instanceof Number
? ((Number) object).intValue()
: Integer.parseInt((String) object);
} catch (final Exception e) {
throw new JSONException("JSONObject[" + JSONObject.quote(key) + "] is not an int.");
}
}
/**
* 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 {
final Object object = this.get(key);
try {
return object instanceof Number
? ((Number) object).doubleValue()
: Double.parseDouble((String) object);
} catch (final Exception e) {
throw new JSONException("JSONObject[" + JSONObject.quote(key) + "] is not a number.");
}
}
/**
* Get the value object associated with a key.
*
* @param key A key string.
* @return The object associated with the key.
* @throws JSONException if the key is not found.
*/
public Object get(String key) throws JSONException {
if (key == null) {
throw new JSONException("Null key.");
}
final Object object = this.opt(key);
if (object == null) {
throw new JSONException("JSONObject[" + JSONObject.quote(key) + "] not found.");
}
return object;
}
/**
* 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 {
final Object object = this.get(key);
if (object.equals(Boolean.FALSE)
|| ((object instanceof String) && ((String) object).equalsIgnoreCase("false"))) {
return false;
} else if (object.equals(Boolean.TRUE)
|| ((object instanceof String) && ((String) object).equalsIgnoreCase("true"))) {
return true;
}
throw new JSONException("JSONObject[" + JSONObject.quote(key) + "] is not a Boolean.");
}
/**
* 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 i;
final int length = this.length();
if (length == 0) {
return "{}";
}
final Iterator keys = this.keys();
final int newindent = indent + indentFactor;
Object object;
final StringBuffer sb = new StringBuffer("{");
if (length == 1) {
object = keys.next();
sb.append(JSONObject.quote(object.toString()));
sb.append(": ");
sb.append(JSONObject.valueToString(this.map.get(object), indentFactor, indent));
} else {
while (keys.hasNext()) {
object = keys.next();
if (sb.length() > 1) {
sb.append(",\n");
} else {
sb.append('\n');
}
for (i = 0; i < newindent; i += 1) {
sb.append(' ');
}
sb.append(JSONObject.quote(object.toString()));
sb.append(": ");
sb.append(JSONObject.valueToString(this.map.get(object), indentFactor, newindent));
}
if (sb.length() > 1) {
sb.append('\n');
for (i = 0; i < indent; i += 1) {
sb.append(' ');
}
}
}
sb.append('}');
return sb.toString();
}
/**
* 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 {
final 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 JSONException("Unable to increment [" + JSONObject.quote(key) + "].");
}
return this;
}
/**
* 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>.
*/
@Override
public String toString() {
try {
final Iterator keys = this.keys();
final StringBuffer sb = new StringBuffer("{");
while (keys.hasNext()) {
if (sb.length() > 1) {
sb.append(',');
}
final Object o = keys.next();
sb.append(JSONObject.quote(o.toString()));
sb.append(':');
sb.append(JSONObject.valueToString(this.map.get(o)));
}
sb.append('}');
return sb.toString();
} catch (final Exception e) {
return null;
}
}
/**
* 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) {
final Object o = ((JSONString) value).toJSONString();
if (o instanceof String) {
return (String) o;
}
}
} catch (final Exception ignore) {
}
if (value instanceof Number) {
return JSONObject.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 JSONObject.quote(value.toString());
}
