/*
* Copyright (C) 2015 Glyptodon LLC
*
* 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 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.
*/
var Guacamole = Guacamole || {};
/**
* A reader which automatically handles the given input stream, returning
* received blobs as a single data URI built over the course of the stream.
* Note that this object will overwrite any installed event handlers on the
* given Guacamole.InputStream.
*
* @constructor
* @param {Guacamole.InputStream} stream
* The stream that data will be read from.
*/
Guacamole.DataURIReader = function(stream, mimetype) {
/**
* Reference to this Guacamole.DataURIReader.
* @private
*/
var guac_reader = this;
/**
* Current data URI.
*
* @private
* @type {String}
*/
var uri = 'data:' + mimetype + ';base64,';
// Receive blobs as array buffers
stream.onblob = function dataURIReaderBlob(data) {
// Currently assuming data will ALWAYS be safe to simply append. This
// will not be true if the received base64 data encodes a number of
// bytes that isn't a multiple of three (as base64 expands in a ratio
// of exactly 3:4).
uri += data;
};
// Simply call onend when end received
stream.onend = function dataURIReaderEnd() {
if (guac_reader.onend)
guac_reader.onend();
};
/**
* Returns the data URI of all data received through the underlying stream
* thus far.
*
* @returns {String}
* The data URI of all data received through the underlying stream thus
* far.
*/
this.getURI = function getURI() {
return uri;
};
/**
* Fired once this stream is finished and no further data will be written.
*
* @event
*/
this.onend = null;
};