1 /*

     2  * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 /*

    27  * @(#)BEncoderStream.java    1.3 02/03/27

    28  */

    29 

    30 

    31 

    32 package com.sun.xml.internal.messaging.saaj.packaging.mime.util;

    33 

    34 import java.io.OutputStream;

    35 

    36 /**

    37  * This class implements a 'B' Encoder as defined by RFC2047 for

    38  * encoding MIME headers. It subclasses the BASE64EncoderStream

    39  * class.

    40  *

    41  * @author John Mani

    42  */

    43 

    44 public class BEncoderStream extends BASE64EncoderStream {

    45 

    46     /**

    47      * Create a 'B' encoder that encodes the specified input stream.

    48      * @param out        the output stream

    49      */

    50     public BEncoderStream(OutputStream out) {

    51         super(out, Integer.MAX_VALUE); // MAX_VALUE is 2^31, should

    52                                        // suffice (!) to indicate that

    53                                        // CRLFs should not be inserted

    54     }

    55 

    56     /**

    57      * Returns the length of the encoded version of this byte array.

    58      */

    59     public static int encodedLength(byte[] b) {

    60         return ((b.length + 2)/3) * 4;

    61     }

    62 }