/**
* Copyright (C) 2014 Serval Project Inc.
*
* This file is part of Serval Software (http://www.servalproject.org)
*
* Serval Software is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This source code is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this source code; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.servalproject.codec;
import java.lang.StringBuilder;
public class Base64 {
public static final char[] SYMBOLS = {
'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P',
'Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f',
'g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v',
'w','x','y','z','0','1','2','3','4','5','6','7','8','9','+','/',
'='
};
public static String encode(byte[] binary)
{
StringBuilder sb = new StringBuilder();
int place = 0;
byte buf = 0;
for (byte b: binary) {
switch (place) {
case 0:
sb.append(SYMBOLS[b >>> 2]);
buf = (byte)((b << 4) & 0x3f);
place = 1;
break;
case 1:
sb.append(SYMBOLS[(b >>> 4) | buf]);
buf = (byte)((b << 2) & 0x3f);
place = 2;
break;
case 2:
sb.append(SYMBOLS[(b >>> 6) | buf]);
sb.append(SYMBOLS[b & 0x3f]);
place = 0;
break;
}
}
if (place != 0)
sb.append(SYMBOLS[buf]);
switch (place) {
case 1:
sb.append(SYMBOLS[64]);
case 2:
sb.append(SYMBOLS[64]);
}
return sb.toString();
}
}