--- a/tweetcast/client/lib/gimite-web-socket-js-55ae639/flash-src/third-party/com/hurlant/util/Base64.as Thu Oct 06 11:56:48 2011 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,189 +0,0 @@
-/* Base64 library for ActionScript 3.0.
- * Based on: Ma Bingyao code.
- * Optimized by: Jean-Philippe Auclair / jpauclair.wordpress.com
- * Copyright (C) 2007 Ma Bingyao <andot@ujn.edu.cn>
- * LastModified: Oct 26, 2009
- * This library is free. You can redistribute it and/or modify it.
- */
-package com.hurlant.util{
- import flash.utils.ByteArray;
-
- public class Base64
- {
- private static const _encodeChars : Vector.<int> = InitEncoreChar();
- private static const _decodeChars : Vector.<int> = InitDecodeChar();
-
- public static function encodeByteArray(data : ByteArray) : String
- {
- var out : ByteArray = new ByteArray();
- //Presetting the length keep the memory smaller and optimize speed since there is no "grow" needed
- out.length = (2 + data.length - ((data.length + 2) % 3)) * 4 / 3; //Preset length //1.6 to 1.5 ms
- var i : int = 0;
- var r : int = data.length % 3;
- var len : int = data.length - r;
- var c : int; //read (3) character AND write (4) characters
-
- while (i < len)
- {
- //Read 3 Characters (8bit * 3 = 24 bits)
- c = data[i++] << 16 | data[i++] << 8 | data[i++];
-
- //Cannot optimize this to read int because of the positioning overhead. (as3 bytearray seek is slow)
- //Convert to 4 Characters (6 bit * 4 = 24 bits)
- c = (_encodeChars[c >>> 18] << 24) | (_encodeChars[c >>> 12 & 0x3f] << 16) | (_encodeChars[c >>> 6 & 0x3f] << 8) | _encodeChars[c & 0x3f];
-
- //Optimization: On older and slower computer, do one write Int instead of 4 write byte: 1.5 to 0.71 ms
- out.writeInt(c);
- /*
- out.writeByte(_encodeChars[c >> 18] );
- out.writeByte(_encodeChars[c >> 12 & 0x3f]);
- out.writeByte(_encodeChars[c >> 6 & 0x3f]);
- out.writeByte(_encodeChars[c & 0x3f]);
- */
- }
-
- if (r == 1) //Need two "=" padding
- {
- //Read one char, write two chars, write padding
- c = data[i];
- c = (_encodeChars[c >>> 2] << 24) | (_encodeChars[(c & 0x03) << 4] << 16) | 61 << 8 | 61;
- out.writeInt(c);
- }
- else if (r == 2) //Need one "=" padding
- {
- c = data[i++] << 8 | data[i];
- c = (_encodeChars[c >>> 10] << 24) | (_encodeChars[c >>> 4 & 0x3f] << 16) | (_encodeChars[(c & 0x0f) << 2] << 8) | 61;
- out.writeInt(c);
- }
-
- out.position = 0;
- return out.readUTFBytes(out.length);
- }
-
-
- public static function decodeToByteArray(str : String) : ByteArray
- {
- var c1 : int;
- var c2 : int;
- var c3 : int;
- var c4 : int;
- var i : int;
- var len : int;
- var out : ByteArray;
- len = str.length;
- i = 0;
- out = new ByteArray();
- var byteString : ByteArray = new ByteArray();
- byteString.writeUTFBytes(str);
- while (i < len)
- {
- //c1
- do
- {
- c1 = _decodeChars[byteString[i++]];
- } while (i < len && c1 == -1);
- if (c1 == -1) break;
-
- //c2
- do
- {
- c2 = _decodeChars[byteString[i++]];
- } while (i < len && c2 == -1);
- if (c2 == -1) break;
-
- out.writeByte((c1 << 2) | ((c2 & 0x30) >> 4));
-
- //c3
- do
- {
- c3 = byteString[i++];
- if (c3 == 61) return out;
-
- c3 = _decodeChars[c3];
- } while (i < len && c3 == -1);
- if (c3 == -1) break;
-
- out.writeByte(((c2 & 0x0f) << 4) | ((c3 & 0x3c) >> 2));
-
- //c4
- do {
- c4 = byteString[i++];
- if (c4 == 61) return out;
-
- c4 = _decodeChars[c4];
- } while (i < len && c4 == -1);
- if (c4 == -1) break;
-
- out.writeByte(((c3 & 0x03) << 6) | c4);
-
- }
-
- out.position = 0;
-
- return out;
- }
-
- public static function encode(data : String) : String {
- // Convert string to ByteArray
- var bytes : ByteArray = new ByteArray();
- bytes.writeUTFBytes(data);
-
- // Return encoded ByteArray
- return encodeByteArray(bytes);
- }
-
- public static function decode(data : String) : String {
- // Decode data to ByteArray
- var bytes : ByteArray = decodeToByteArray(data);
-
- // Convert to string and return
- return bytes.readUTFBytes(bytes.length);
- }
-
- public static function InitEncoreChar() : Vector.<int>
- {
- var encodeChars : Vector.<int> = new Vector.<int>();
- // We could push the number directly, but i think it's nice to see the characters (with no overhead on encode/decode)
- var chars : String = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
- for (var i : int = 0; i < 64; i++)
- {
- encodeChars.push(chars.charCodeAt(i));
- }
- /*
- encodeChars.push(
- 65, 66, 67, 68, 69, 70, 71, 72,
- 73, 74, 75, 76, 77, 78, 79, 80,
- 81, 82, 83, 84, 85, 86, 87, 88,
- 89, 90, 97, 98, 99, 100, 101, 102,
- 103, 104, 105, 106, 107, 108, 109, 110,
- 111, 112, 113, 114, 115, 116, 117, 118,
- 119, 120, 121, 122, 48, 49, 50, 51,
- 52, 53, 54, 55, 56, 57, 43, 47);
- */
- return encodeChars;
- }
-
- public static function InitDecodeChar() : Vector.<int>
- {
- var decodeChars : Vector.<int> = new Vector.<int>();
-
- decodeChars.push(-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63,
- 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1,
- -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
- 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,
- -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
- 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1
- - 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1);
- return decodeChars;
- }
- }
-}
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