| /* |
| * |
| * 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 base64 = exports; |
| |
| base64.fromArrayBuffer = function (arrayBuffer) { |
| return btoa(bufferToBinaryString(arrayBuffer)); |
| }; |
| |
| base64.toArrayBuffer = function (str) { |
| return binaryStringToBuffer(atob(str)); |
| }; |
| |
| function bufferToBinaryString (buffer) { |
| var bytes = new Uint8Array(buffer); |
| var CHUNK_SIZE = 1 << 15; |
| var string = ''; |
| for (var i = 0; i < bytes.length; i += CHUNK_SIZE) { |
| var chunk = bytes.subarray(i, i + CHUNK_SIZE); |
| string += String.fromCharCode.apply(null, chunk); |
| } |
| return string; |
| } |
| |
| function binaryStringToBuffer (binaryString) { |
| var bytes = new Uint8Array(binaryString.length); |
| for (var i = 0; i < bytes.length; i++) { |
| bytes[i] = binaryString.charCodeAt(i); |
| } |
| return bytes.buffer; |
| } |