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https://github.com/gyurix1968/guacamole-client.git
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84 lines
2.5 KiB
JavaScript
84 lines
2.5 KiB
JavaScript
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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var Guacamole = Guacamole || {};
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/**
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* A reader which automatically handles the given input stream, returning
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* received blobs as a single data URI built over the course of the stream.
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* Note that this object will overwrite any installed event handlers on the
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* given Guacamole.InputStream.
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*
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* @constructor
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* @param {Guacamole.InputStream} stream
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* The stream that data will be read from.
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*/
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Guacamole.DataURIReader = function(stream, mimetype) {
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/**
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* Reference to this Guacamole.DataURIReader.
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* @private
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*/
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var guac_reader = this;
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/**
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* Current data URI.
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*
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* @private
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* @type {String}
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*/
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var uri = 'data:' + mimetype + ';base64,';
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// Receive blobs as array buffers
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stream.onblob = function dataURIReaderBlob(data) {
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// Currently assuming data will ALWAYS be safe to simply append. This
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// will not be true if the received base64 data encodes a number of
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// bytes that isn't a multiple of three (as base64 expands in a ratio
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// of exactly 3:4).
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uri += data;
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};
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// Simply call onend when end received
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stream.onend = function dataURIReaderEnd() {
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if (guac_reader.onend)
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guac_reader.onend();
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};
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/**
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* Returns the data URI of all data received through the underlying stream
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* thus far.
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*
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* @returns {String}
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* The data URI of all data received through the underlying stream thus
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* far.
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*/
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this.getURI = function getURI() {
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return uri;
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};
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/**
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* Fired once this stream is finished and no further data will be written.
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*
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* @event
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*/
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this.onend = null;
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}; |