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/*
* File: JSONStringer.java
* Author: JSON.org
*/
package org.json;
/*
* Copyright (c) 2006 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.StringWriter;
// TODO: Auto-generated Javadoc
/**
* JSONStringer provides a quick and convenient way of producing JSON text. The
* texts produced strictly conform to JSON syntax rules. No whitespace is added,
* so the results are ready for transmission or storage. Each instance of
* JSONStringer can produce one JSON text.
* <p>
* A JSONStringer instance provides a <code>value</code> method for appending
* values to the text, and a <code>key</code> method for adding keys before
* values in objects. There are <code>array</code> and <code>endArray</code>
* methods that make and bound array values, and <code>object</code> and
* <code>endObject</code> methods which make and bound object values. All of
* these methods return the JSONWriter instance, permitting cascade style. For
* example,
*
* <pre>
* myString = new JSONStringer().object().key("JSON").value("Hello, World!")
* .endObject().toString();
* </pre>
*
* which produces the string
*
* <pre>
* {"JSON":"Hello, World!"}
* </pre>
* <p>
* The first method called must be <code>array</code> or <code>object</code>.
* There are no methods for adding commas or colons. JSONStringer adds them for
* you. Objects and arrays can be nested up to 20 levels deep.
* <p>
* This can sometimes be easier than using a JSONObject to build a string.
*
* @author JSON.org
* @version 2008-09-18
*/
public class JSONStringer extends JSONWriter
{
/**
* Make a fresh JSONStringer. It can be used to build one JSON text.
*/
public JSONStringer()
{
super(new StringWriter());
}
/**
* Return the JSON text. This method is used to obtain the product of the
* JSONStringer instance. It will return <code>null</code> if there was a
* problem in the construction of the JSON text (such as the calls to
* <code>array</code> were not properly balanced with calls to
* <code>endArray</code>).
*
* @return The JSON text.
*/
@Override
public String toString()
{
return mode == 'd' ? writer.toString() : null;
}
}