piotrzarzycki21 commented on a change in pull request #227: Feature/mx royale URL: https://github.com/apache/royale-asjs/pull/227#discussion_r187795938
########## File path: frameworks/projects/MXRoyale/src/main/royale/mx/utils/Base64Encoder.as ########## @@ -0,0 +1,435 @@ +//////////////////////////////////////////////////////////////////////////////// +// +// 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. +// +//////////////////////////////////////////////////////////////////////////////// + +package mx.utils +{ + +COMPILE::SWF +{ + import flash.utils.ByteArray; +} + +COMPILE::JS +{ + import goog.DEBUG; +} + +/** + * A utility class to encode a String or ByteArray as a Base64 encoded String. + * + * @langversion 3.0 + * @playerversion Flash 9 + * @playerversion AIR 1.1 + * @productversion Flex 3 + */ +public class Base64Encoder +{ + + //-------------------------------------------------------------------------- + // + // Static Class Variables + // + //-------------------------------------------------------------------------- + + /** + * Constant definition for the string "UTF-8". + * + * @langversion 3.0 + * @playerversion Flash 9 + * @playerversion AIR 1.1 + * @productversion Flex 3 + */ + public static const CHARSET_UTF_8:String = "UTF-8"; + + /** + * The character codepoint to be inserted into the encoded output to + * denote a new line if <code>insertNewLines</code> is true. + * + * The default is <code>10</code> to represent the line feed <code>\n</code>. + * + * @langversion 3.0 + * @playerversion Flash 9 + * @playerversion AIR 1.1 + * @productversion Flex 3 + */ + public static var newLine:int = 10; + + //-------------------------------------------------------------------------- + // + // Constructor + // + //-------------------------------------------------------------------------- + + /** + * Constructor. + * + * @langversion 3.0 + * @playerversion Flash 9 + * @playerversion AIR 1.1 + * @productversion Flex 3 + */ + public function Base64Encoder() + { + super(); + reset(); + } + + //-------------------------------------------------------------------------- + // + // Variables + // + //-------------------------------------------------------------------------- + + /** + * A Boolean flag to control whether the sequence of characters specified + * for <code>Base64Encoder.newLine</code> are inserted every 76 characters + * to wrap the encoded output. + * + * The default is true. + * + * @langversion 3.0 + * @playerversion Flash 9 + * @playerversion AIR 1.1 + * @productversion Flex 3 + */ + public var insertNewLines:Boolean = true; + + //-------------------------------------------------------------------------- + // + // Public Methods + // + //-------------------------------------------------------------------------- + + /** + * @private + */ + public function drain():String + { + var result:String = ""; + + for (var i:uint = 0; i < _buffers.length; i++) + { + var buffer:Array = _buffers[i] as Array; + result += String.fromCharCode.apply(null, buffer); + } + + _buffers = []; + _buffers.push([]); + + return result; + } + + COMPILE::JS + public function encode(data:String, encoding = "utf-8"):void + { + // var bytes:Object = new (TextEncoder || TextEncoderLite)(encoding).encode(data); + // return base64js.fromByteArray(bytes); + /* + var base64js:Object = window["base64js"]; + var textEncoderLite:Object = window["TextEncoderLite"]; + + var bytes:Object = textEncoderLite(encoding).encode(data); + + _stringResult = base64js["base64js"].fromByteArray(bytes); + */ + + var bytes:Object = new TextEncoderLiteWrapper(encoding).encode(data); + _stringResult = new Base64JSWrapper().fromByteArray(bytes); + + } + + /** + * Encodes the characters of a String in Base64 and adds the result to + * an internal buffer. Strings must be in ASCII format. + * + * <p>Subsequent calls to this method add on to the + * internal buffer. After all data have been encoded, call + * <code>toString()</code> to obtain a Base64 encoded String.</p> + * + * @param data The String to encode. + * @param offset The character position from which to start encoding. + * @param length The number of characters to encode from the offset. + * + * @langversion 3.0 + * @playerversion Flash 9 + * @playerversion AIR 1.1 + * @productversion Flex 3 + */ + COMPILE::SWF + public function encode(data:String, offset:uint=0, length:uint=0):void + { + if (length == 0) + length = data.length; + + var currentIndex:uint = offset; + + var endIndex:uint = offset + length; + if (endIndex > data.length) + endIndex = data.length; + + while (currentIndex < endIndex) + { + _work[_count] = data.charCodeAt(currentIndex); + _count++; + + if (_count == _work.length || endIndex - currentIndex == 1) + { + encodeBlock(); + _count = 0; + _work[0] = 0; + _work[1] = 0; + _work[2] = 0; + } + currentIndex++; + } + } + + + COMPILE::JS + public function encodeUTFBytes(data:String):void + { + encode(data); + } + + /** + * Encodes the UTF-8 bytes of a String in Base64 and adds the result to an + * internal buffer. The UTF-8 information does not contain a length prefix. + * Subsequent calls to this method add on to the internal buffer. After all + * data have been encoded, call <code>toString()</code> to obtain a Base64 + * encoded String. + * + * @param data The String to encode. + * + * @langversion 3.0 + * @playerversion Flash 9 + * @playerversion AIR 1.1 + * @productversion Flex 3 + */ + COMPILE::SWF + public function encodeUTFBytes(data:String):void + { + var bytes:ByteArray = new ByteArray(); + bytes.writeUTFBytes(data); + bytes.position = 0; + encodeBytes(bytes); + } + + /** + * Encodes a ByteArray in Base64 and adds the result to an internal buffer. + * Subsequent calls to this method add on to the internal buffer. After all + * data have been encoded, call <code>toString()</code> to obtain a + * Base64 encoded String. + * + * @param data The ByteArray to encode. + * @param offset The index from which to start encoding. + * @param length The number of bytes to encode from the offset. + * + * @langversion 3.0 + * @playerversion Flash 9 + * @playerversion AIR 1.1 + * @productversion Flex 3 + */ + COMPILE::SWF + public function encodeBytes(data:ByteArray, offset:uint=0, length:uint=0):void + { + if (length == 0) + length = data.length; + + var oldPosition:uint = data.position; + data.position = offset; + var currentIndex:uint = offset; + + var endIndex:uint = offset + length; + if (endIndex > data.length) + endIndex = data.length; + + while (currentIndex < endIndex) + { + _work[_count] = data[currentIndex]; + _count++; + + if (_count == _work.length || endIndex - currentIndex == 1) + { + encodeBlock(); + _count = 0; + _work[0] = 0; + _work[1] = 0; + _work[2] = 0; + } + currentIndex++; + } + + data.position = oldPosition; + } + + /** + * @private + */ + public function flush():String + { + if (_count > 0) + encodeBlock(); + + var result:String = drain(); + reset(); + return result; + } + + /** + * Clears all buffers and resets the encoder to its initial state. + * + * @langversion 3.0 + * @playerversion Flash 9 + * @playerversion AIR 1.1 + * @productversion Flex 3 + */ + public function reset():void + { + _buffers = []; Review comment: If you are resetting things here - does that mean `_stringResult `(`encodedString`) should be also reset? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
