mirror of
https://github.com/gyurix1968/guacamole-client.git
synced 2025-09-10 07:01:21 +00:00
131 lines
4.0 KiB
JavaScript
131 lines
4.0 KiB
JavaScript
/*
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* Copyright (C) 2013 Glyptodon LLC
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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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, assembling all
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* received blobs into a single blob by appending them to each other in order.
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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 The stream that data will be read
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* from.
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* @param {String} mimetype The mimetype of the blob being built.
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*/
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Guacamole.BlobReader = function(stream, mimetype) {
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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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/**
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* The length of this Guacamole.InputStream in bytes.
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* @private
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*/
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var length = 0;
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// Get blob builder
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var blob_builder;
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if (window.BlobBuilder) blob_builder = new BlobBuilder();
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else if (window.WebKitBlobBuilder) blob_builder = new WebKitBlobBuilder();
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else if (window.MozBlobBuilder) blob_builder = new MozBlobBuilder();
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else
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blob_builder = new (function() {
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var blobs = [];
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/** @ignore */
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this.append = function(data) {
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blobs.push(new Blob([data], {"type": mimetype}));
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};
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/** @ignore */
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this.getBlob = function() {
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return new Blob(blobs, {"type": mimetype});
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};
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})();
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// Append received blobs
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stream.onblob = function(data) {
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// Convert to ArrayBuffer
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var binary = window.atob(data);
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var arrayBuffer = new ArrayBuffer(binary.length);
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var 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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blob_builder.append(arrayBuffer);
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length += arrayBuffer.byteLength;
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// Call handler, if present
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if (guac_reader.onprogress)
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guac_reader.onprogress(arrayBuffer.byteLength);
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// Send success response
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stream.sendAck("OK", 0x0000);
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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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* Returns the current length of this Guacamole.InputStream, in bytes.
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* @return {Number} The current length of this Guacamole.InputStream.
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*/
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this.getLength = function() {
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return length;
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};
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/**
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* Returns the contents of this Guacamole.BlobReader as a Blob.
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* @return {Blob} The contents of this Guacamole.BlobReader.
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*/
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this.getBlob = function() {
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return blob_builder.getBlob();
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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 {Number} length The number of bytes received.
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*/
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this.onprogress = 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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}; |