mirror of
https://github.com/gyurix1968/guacamole-client.git
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91 lines
2.6 KiB
JavaScript
91 lines
2.6 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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* strictly received packets as array buffers. Note that this object will
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* overwrite any installed event handlers on the 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.ArrayBufferReader = function(stream) {
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/**
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* Reference to this Guacamole.InputStream.
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* @private
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*/
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var guac_reader = this;
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// Receive blobs as array buffers
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stream.onblob = function(data) {
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var arrayBuffer, bufferView;
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// Use native methods for directly decoding base64 to an array buffer
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// when possible
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if (Uint8Array.fromBase64) {
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bufferView = Uint8Array.fromBase64(data);
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arrayBuffer = bufferView.buffer;
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}
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// Rely on binary strings and manual conversions where native methods
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// like fromBase64() are not available
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else {
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var binary = window.atob(data);
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arrayBuffer = new ArrayBuffer(binary.length);
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bufferView = new Uint8Array(arrayBuffer);
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for (var i=0; i<binary.length; i++)
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bufferView[i] = binary.charCodeAt(i);
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}
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// Call handler, if present
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if (guac_reader.ondata)
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guac_reader.ondata(arrayBuffer);
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};
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// Simply call onend when end received
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stream.onend = function() {
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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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* Fired once for every blob of data received.
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*
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* @event
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* @param {!ArrayBuffer} buffer
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* The data packet received.
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*/
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this.ondata = null;
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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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* @event
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*/
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this.onend = null;
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}; |