jdk8-mips64-public/jaxws: src/share/jaxws_classes/com/sun/xml/internal/messaging/saaj/packaging/mime/util/BASE64EncoderStream.java@9c07ef4934dd (annotated)

src/share/jaxws_classes/com/sun/xml/internal/messaging/saaj/packaging/mime/util/BASE64EncoderStream.java@9c07ef4934dd (annotated)

src/share/jaxws_classes/com/sun/xml/internal/messaging/saaj/packaging/mime/util/BASE64EncoderStream.java

Thu, 31 Aug 2017 15:18:52 +0800

author: aoqi
date: Thu, 31 Aug 2017 15:18:52 +0800
changeset 637: 9c07ef4934dd
parent 368: 0989ad8c0860
parent 0: 373ffda63c9a
permissions: -rw-r--r--

merge

 /*
  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Oracle in the LICENSE file that accompanied this code.
  *
  * This 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
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
 /*
  * @(#)BASE64EncoderStream.java       1.6 02/03/27
  */
 package com.sun.xml.internal.messaging.saaj.packaging.mime.util;
 import java.io.*;
 /**
  * This class implements a BASE64 Encoder. It is implemented as
  * a FilterOutputStream, so one can just wrap this class around
  * any output stream and write bytes into this filter. The Encoding
  * is done as the bytes are written out.
  *
  * @author John Mani
  * @author Bill Shannon
  */
 public class BASE64EncoderStream extends FilterOutputStream {
     private byte[] buffer;      // cache of bytes that are yet to be encoded
     private int bufsize = 0;    // size of the cache
     private int count = 0;      // number of bytes that have been output
     private int bytesPerLine;   // number of bytes per line
     /**
      * Create a BASE64 encoder that encodes the specified input stream
      * @param out        the output stream
      * @param bytesPerLine  number of bytes per line. The encoder inserts
      *                   a CRLF sequence after the specified number of bytes
      */
     public BASE64EncoderStream(OutputStream out, int bytesPerLine) {
         super(out);
         buffer = new byte[3];
         this.bytesPerLine = bytesPerLine;
     }
     /**
      * Create a BASE64 encoder that encodes the specified input stream.
      * Inserts the CRLF sequence after outputting 76 bytes.
      * @param out        the output stream
      */
     public BASE64EncoderStream(OutputStream out) {
         this(out, 76);
     }
     /**
      * Encodes <code>len</code> bytes from the specified
      * <code>byte</code> array starting at offset <code>off</code> to
      * this output stream.
      *
      * @param      b     the data.
      * @param      off   the start offset in the data.
      * @param      len   the number of bytes to write.
      * @exception  IOException  if an I/O error occurs.
      */
     public void write(byte[] b, int off, int len) throws IOException {
         for (int i = 0; i < len; i++)
             write(b[off + i]);
     }
     /**
      * Encodes <code>b.length</code> bytes to this output stream.
      * @param      b   the data to be written.
      * @exception  IOException  if an I/O error occurs.
      */
     public void write(byte[] b) throws IOException {
         write(b, 0, b.length);
     }
     /**
      * Encodes the specified <code>byte</code> to this output stream.
      * @param      c   the <code>byte</code>.
      * @exception  IOException  if an I/O error occurs.
      */
     public void write(int c) throws IOException {
         buffer[bufsize++] = (byte)c;
         if (bufsize == 3) { // Encoding unit = 3 bytes
             encode();
             bufsize = 0;
         }
     }
     /**
      * Flushes this output stream and forces any buffered output bytes
      * to be encoded out to the stream.
      * @exception  IOException  if an I/O error occurs.
      */
     public void flush() throws IOException {
         if (bufsize > 0) { // If there's unencoded characters in the buffer ..
             encode();      // .. encode them
             bufsize = 0;
         }
         out.flush();
     }
     /**
      * Forces any buffered output bytes to be encoded out to the stream
      * and closes this output stream
      */
     public void close() throws IOException {
         flush();
         out.close();
     }
     /** This array maps the characters to their 6 bit values */
     private final static char pem_array[] = {
         'A','B','C','D','E','F','G','H', // 0
         'I','J','K','L','M','N','O','P', // 1
         'Q','R','S','T','U','V','W','X', // 2
         'Y','Z','a','b','c','d','e','f', // 3
         'g','h','i','j','k','l','m','n', // 4
         'o','p','q','r','s','t','u','v', // 5
         'w','x','y','z','0','1','2','3', // 6
         '4','5','6','7','8','9','+','/'  // 7
     };
     private void encode() throws IOException {
         // If writing out this encoded unit will cause overflow,
         // start a new line.
         if (count + 4 > bytesPerLine) {
             out.write('\r');
             out.write('\n');
             count = 0;
         }
         byte a, b, c;
         if (bufsize == 1) {
             a = buffer[0];
             b = 0;
             c = 0;
             out.write(pem_array[(a >>> 2) & 0x3F]);
             out.write(pem_array[((a << 4) & 0x30) + ((b >>> 4) & 0xf)]);
             out.write('='); // pad character
             out.write('='); // pad character
         } else if (bufsize == 2) {
             a = buffer[0];
             b = buffer[1];
             c = 0;
             out.write(pem_array[(a >>> 2) & 0x3F]);
             out.write(pem_array[((a << 4) & 0x30) + ((b >>> 4) & 0xf)]);
             out.write(pem_array[((b << 2) & 0x3c) + ((c >>> 6) & 0x3)]);
             out.write('='); // pad character
         } else {
             a = buffer[0];
             b = buffer[1];
             c = buffer[2];
             out.write(pem_array[(a >>> 2) & 0x3F]);
             out.write(pem_array[((a << 4) & 0x30) + ((b >>> 4) & 0xf)]);
             out.write(pem_array[((b << 2) & 0x3c) + ((c >>> 6) & 0x3)]);
             out.write(pem_array[c & 0x3F]);
         }
         // increment count
         count += 4;
     }
     /**
      * Base64 encode a byte array.  No line breaks are inserted.
      * This method is suitable for short strings, such as those
      * in the IMAP AUTHENTICATE protocol, but not to encode the
      * entire content of a MIME part.
      */
     public static byte[] encode(byte[] inbuf) {
         if (inbuf.length == 0)
             return inbuf;
         byte[] outbuf = new byte[((inbuf.length + 2) / 3) * 4];
         int inpos = 0, outpos = 0;
         int size = inbuf.length;
         while (size > 0) {
             byte a, b, c;
             if (size == 1) {
                 a = inbuf[inpos++];
                 b = 0;
                 c = 0;
                 outbuf[outpos++] = (byte)pem_array[(a >>> 2) & 0x3F];
                 outbuf[outpos++] =
                         (byte)pem_array[((a << 4) & 0x30) + ((b >>> 4) & 0xf)];
                 outbuf[outpos++] = (byte)'=';  // pad character
                 outbuf[outpos++] = (byte)'=';  // pad character
             } else if (size == 2) {
                 a = inbuf[inpos++];
                 b = inbuf[inpos++];
                 c = 0;
                 outbuf[outpos++] = (byte)pem_array[(a >>> 2) & 0x3F];
                 outbuf[outpos++] =
                         (byte)pem_array[((a << 4) & 0x30) + ((b >>> 4) & 0xf)];
                 outbuf[outpos++] =
                         (byte)pem_array[((b << 2) & 0x3c) + ((c >>> 6) & 0x3)];
                 outbuf[outpos++] = (byte)'=';  // pad character
             } else {
                 a = inbuf[inpos++];
                 b = inbuf[inpos++];
                 c = inbuf[inpos++];
                 outbuf[outpos++] = (byte)pem_array[(a >>> 2) & 0x3F];
                 outbuf[outpos++] =
                         (byte)pem_array[((a << 4) & 0x30) + ((b >>> 4) & 0xf)];
                 outbuf[outpos++] =
                         (byte)pem_array[((b << 2) & 0x3c) + ((c >>> 6) & 0x3)];
                 outbuf[outpos++] = (byte)pem_array[c & 0x3F];
             }
             size -= 3;
         }
         return outbuf;
     }
     /*** begin TEST program
     public static void main(String argv[]) throws Exception {
         FileInputStream infile = new FileInputStream(argv[0]);
         BASE64EncoderStream encoder = new BASE64EncoderStream(System.out);
         int c;
         while ((c = infile.read()) != -1)
             encoder.write(c);
         encoder.close();
     }
     *** end TEST program **/
 }

Mercurial > jdk8-mips64-public > jaxws / annotate

src/share/jaxws_classes/com/sun/xml/internal/messaging/saaj/packaging/mime/util/BASE64EncoderStream.java@9c07ef4934dd (annotated)

src/share/jaxws_classes/com/sun/xml/internal/messaging/saaj/packaging/mime/util/BASE64EncoderStream.java