Boemio,
I think you have a valid point there.
(I am not familiar with sun.misc anyway)
So, here is another one:-)
laszlo
/* Base64 is a trimmed version of Codecs.java written by Ronald
Tschalaer. Base64 was created to suit the needs of Muffin. */
/*
* @(#)Codecs.java 0.3 30/01/1998
*
* This file is part of the HTTPClient package
* Copyright (C) 1996-1998 Ronald Tschalaer
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or(at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA
*
* For questions, suggestions, bug-reports, enhancement-requests etc.
* I may be contacted at:
*
* [EMAIL PROTECTED]
* [EMAIL PROTECTED]
* */
package org.doit.util;
public class Base64
{
private static byte[] Base64DecMap;
// Class Initializer
static
{
// rfc-2045: Base64 Alphabet
byte[] map = {
(byte)'A', (byte)'B', (byte)'C', (byte)'D', (byte)'E', (byte)'F',
(byte)'G', (byte)'H', (byte)'I', (byte)'J', (byte)'K', (byte)'L',
(byte)'M', (byte)'N', (byte)'O', (byte)'P', (byte)'Q', (byte)'R',
(byte)'S', (byte)'T', (byte)'U', (byte)'V', (byte)'W', (byte)'X',
(byte)'Y', (byte)'Z',
(byte)'a', (byte)'b', (byte)'c', (byte)'d', (byte)'e', (byte)'f',
(byte)'g', (byte)'h', (byte)'i', (byte)'j', (byte)'k', (byte)'l',
(byte)'m', (byte)'n', (byte)'o', (byte)'p', (byte)'q', (byte)'r',
(byte)'s', (byte)'t', (byte)'u', (byte)'v', (byte)'w', (byte)'x',
(byte)'y', (byte)'z',
(byte)'0', (byte)'1', (byte)'2', (byte)'3', (byte)'4', (byte)'5',
(byte)'6', (byte)'7', (byte)'8', (byte)'9', (byte)'+', (byte)'/' };
Base64DecMap = new byte[128];
for (int idx=0; idx<map.length; idx++)
Base64DecMap[map[idx]] = (byte) idx;
}
/**
* This class isn't meant to be instantiated.
*/
private Base64() {}
/**
* This method decodes the given string using the base64-encoding
* specified in RFC-2045(Section 6.8).
*
* @param str the base64-encoded string.
* @return the decoded <var>str</var>.
*/
public final static String base64Decode(String str)
{
if (str == null) return null;
// byte data[] = new byte[str.length()];
// str.getBytes(0, str.length(), data, 0);
byte data[] = str.getBytes();
return new String(base64Decode(data));
}
/**
* This method decodes the given byte[] using the base64-encoding
* specified in RFC-2045(Section 6.8).
*
* @param data the base64-encoded data.
* @return the decoded <var>data</var>.
*/
public final static byte[] base64Decode(byte[] data)
{
if (data == null) return null;
int tail = data.length;
while (data[tail-1] == '=') tail--;
byte dest[] = new byte[tail - data.length/4];
// ascii printable to 0-63 conversion
for (int idx = 0; idx <data.length; idx++)
data[idx] = Base64DecMap[data[idx]];
// 4-byte to 3-byte conversion
int sidx, didx;
for (sidx = 0, didx=0; didx < dest.length-2; sidx += 4, didx +=
3)
{
dest[didx] = (byte) ( ((data[sidx] << 2) & 255) |
((data[sidx+1] >>> 4) & 003) );
dest[didx+1] = (byte) ( ((data[sidx+1] << 4) & 255) |
((data[sidx+2] >>> 2) & 017) );
dest[didx+2] = (byte) ( ((data[sidx+2] << 6) & 255) |
(data[sidx+3] & 077) );
}
if (didx < dest.length)
dest[didx] = (byte) ( ((data[sidx] << 2) & 255) |
((data[sidx+1] >>> 4) & 003) );
if (++didx < dest.length)
dest[didx] = (byte) ( ((data[sidx+1] << 4) & 255) |
((data[sidx+2] >>> 2) & 017) );
return dest;
}
}
"Boemio, Neil (CAP, FGI)" wrote:
>
> Don't you take a risk when using sun.misc.*
>
> Sun states:
>
> "The sun.* packages are not part of the supported, public Java interface.
> A Java program that directly calls any API in sun.* packages is not
> guaranteed to work on all Java-compatible platforms. In fact, such a program
> is not guaranteed to work even in future versions on the same platform."
>
> -----Original Message-----
> From: Laszlo Nadai [mailto:[EMAIL PROTECTED]]
> Sent: Friday, May 05, 2000 3:17 PM
> To: [EMAIL PROTECTED]
> Subject: Re: Base64 Encoding
>
> import sun.misc.*;
> import java.awt.*;
> import java.io.*;
>
> public class Base64Encode {
>
> public static void main(String[] args) {
>
> if (args.length > 0) {
> for (int i = 0; i < args.length; i++) {
> try {
> InputStream is = new FileInputStream(args[i]);
> OutputStream os = new FileOutputStream(args[i] + ".64");
> BASE64Encoder b64ec = new BASE64Encoder();
> b64ec.encodeBuffer(is, os);
> }
> catch (IOException e) {
> System.err.println(e);
> }
> } // end for
> } // end if
>
> } // end main
>
> }
>
> laszlo
>
> > Adam Weigert wrote:
> >
> > How can I do it... I have the decoding process but I need the
> > encoding...
> >
> > regards,
> > Adam
>
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