/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
var Guacamole = Guacamole || {};
/**
* A reader which automatically handles the given input stream, assembling all
* received blobs into a JavaScript object by appending them to each other, in
* order, and decoding the result as JSON. Note that this object will overwrite
* any installed event handlers on the given Guacamole.InputStream.
*
* @constructor
* @param {Guacamole.InputStream} stream
* The stream that JSON will be read from.
*/
Guacamole.JSONReader = function guacamoleJSONReader(stream) {
/**
* Reference to this Guacamole.JSONReader.
*
* @private
* @type {Guacamole.JSONReader}
*/
var guacReader = this;
/**
* Wrapped Guacamole.StringReader.
*
* @private
* @type {Guacamole.StringReader}
*/
var stringReader = new Guacamole.StringReader(stream);
/**
* All JSON read thus far.
*
* @private
* @type {String}
*/
var json = '';
/**
* Returns the current length of this Guacamole.JSONReader, in characters.
*
* @return {Number}
* The current length of this Guacamole.JSONReader.
*/
this.getLength = function getLength() {
return json.length;
};
/**
* Returns the contents of this Guacamole.JSONReader as a JavaScript
* object.
*
* @return {Object}
* The contents of this Guacamole.JSONReader, as parsed from the JSON
* contents of the input stream.
*/
this.getJSON = function getJSON() {
return JSON.parse(json);
};
// Append all received text
stringReader.ontext = function ontext(text) {
// Append received text
json += text;
// Call handler, if present
if (guacReader.onprogress)
guacReader.onprogress(text.length);
};
// Simply call onend when end received
stringReader.onend = function onend() {
if (guacReader.onend)
guacReader.onend();
};
/**
* Fired once for every blob of data received.
*
* @event
* @param {Number} length
* The number of characters received.
*/
this.onprogress = null;
/**
* Fired once this stream is finished and no further data will be written.
*
* @event
*/
this.onend = null;
};