1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/jaxws_classes/com/sun/xml/internal/org/jvnet/staxex/Base64EncoderStream.java Tue Mar 06 16:09:35 2012 -0800
1.3 @@ -0,0 +1,202 @@
1.4 +/*
1.5 + * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation. Oracle designates this
1.11 + * particular file as subject to the "Classpath" exception as provided
1.12 + * by Oracle in the LICENSE file that accompanied this code.
1.13 + *
1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 + * version 2 for more details (a copy is included in the LICENSE file that
1.18 + * accompanied this code).
1.19 + *
1.20 + * You should have received a copy of the GNU General Public License version
1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 + *
1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.25 + * or visit www.oracle.com if you need additional information or have any
1.26 + * questions.
1.27 + */
1.28 +
1.29 +package com.sun.xml.internal.org.jvnet.staxex;
1.30 +
1.31 +import java.io.*;
1.32 +import java.util.logging.Level;
1.33 +import java.util.logging.Logger;
1.34 +import javax.xml.stream.XMLStreamException;
1.35 +import javax.xml.stream.XMLStreamWriter;
1.36 +
1.37 +// for testing method
1.38 +//import com.sun.xml.internal.stream.writers.XMLStreamWriterImpl;
1.39 +
1.40 +/**
1.41 + * This class implements a BASE64 Encoder. It is implemented as
1.42 + * a FilterOutputStream, so one can just wrap this class around
1.43 + * any output stream and write bytes into this filter. The Encoding
1.44 + * is done as the bytes are written out.
1.45 + *
1.46 + * @author John Mani
1.47 + * @author Bill Shannon
1.48 + * @author Martin Grebac
1.49 + */
1.50 +
1.51 +public class Base64EncoderStream extends FilterOutputStream {
1.52 + private byte[] buffer; // cache of bytes that are yet to be encoded
1.53 + private int bufsize = 0; // size of the cache
1.54 +
1.55 + private XMLStreamWriter outWriter;
1.56 +
1.57 + public Base64EncoderStream(OutputStream out) {
1.58 + super(out);
1.59 + buffer = new byte[3];
1.60 + }
1.61 +
1.62 + /**
1.63 + * Create a BASE64 encoder that encodes the specified input stream
1.64 + */
1.65 + public Base64EncoderStream(XMLStreamWriter outWriter, OutputStream out) {
1.66 + super(out);
1.67 + buffer = new byte[3];
1.68 + this.outWriter = outWriter;
1.69 + }
1.70 +
1.71 + /**
1.72 + * Encodes <code>len</code> bytes from the specified
1.73 + * <code>byte</code> array starting at offset <code>off</code> to
1.74 + * this output stream.
1.75 + *
1.76 + * @param b the data.
1.77 + * @param off the start offset in the data.
1.78 + * @param len the number of bytes to write.
1.79 + * @exception IOException if an I/O error occurs.
1.80 + */
1.81 + @Override
1.82 + public void write(byte[] b, int off, int len) throws IOException {
1.83 + for (int i = 0; i < len; i++)
1.84 + write(b[off + i]);
1.85 + }
1.86 +
1.87 + /**
1.88 + * Encodes <code>b.length</code> bytes to this output stream.
1.89 + * @param b the data to be written.
1.90 + * @exception IOException if an I/O error occurs.
1.91 + */
1.92 + @Override
1.93 + public void write(byte[] b) throws IOException {
1.94 + write(b, 0, b.length);
1.95 + }
1.96 +
1.97 + /**
1.98 + * Encodes the specified <code>byte</code> to this output stream.
1.99 + * @param c the <code>byte</code>.
1.100 + * @exception IOException if an I/O error occurs.
1.101 + */
1.102 + @Override
1.103 + public void write(int c) throws IOException {
1.104 + buffer[bufsize++] = (byte)c;
1.105 + if (bufsize == 3) { // Encoding unit = 3 bytes
1.106 + encode();
1.107 + bufsize = 0;
1.108 + }
1.109 + }
1.110 +
1.111 + /**
1.112 + * Flushes this output stream and forces any buffered output bytes
1.113 + * to be encoded out to the stream.
1.114 + * @exception IOException if an I/O error occurs.
1.115 + */
1.116 + @Override
1.117 + public void flush() throws IOException {
1.118 + if (bufsize > 0) { // If there's unencoded characters in the buffer ..
1.119 + encode(); // .. encode them
1.120 + bufsize = 0;
1.121 + }
1.122 + out.flush();
1.123 + try {
1.124 + outWriter.flush();
1.125 + } catch (XMLStreamException ex) {
1.126 + Logger.getLogger(Base64EncoderStream.class.getName()).log(Level.SEVERE, null, ex);
1.127 + throw new IOException(ex);
1.128 + }
1.129 + }
1.130 +
1.131 + /**
1.132 + * Forces any buffered output bytes to be encoded out to the stream
1.133 + * and closes this output stream
1.134 + */
1.135 + @Override
1.136 + public void close() throws IOException {
1.137 + flush();
1.138 + out.close();
1.139 + }
1.140 +
1.141 + /** This array maps the characters to their 6 bit values */
1.142 + private final static char pem_array[] = {
1.143 + 'A','B','C','D','E','F','G','H', // 0
1.144 + 'I','J','K','L','M','N','O','P', // 1
1.145 + 'Q','R','S','T','U','V','W','X', // 2
1.146 + 'Y','Z','a','b','c','d','e','f', // 3
1.147 + 'g','h','i','j','k','l','m','n', // 4
1.148 + 'o','p','q','r','s','t','u','v', // 5
1.149 + 'w','x','y','z','0','1','2','3', // 6
1.150 + '4','5','6','7','8','9','+','/' // 7
1.151 + };
1.152 +
1.153 + private void encode() throws IOException {
1.154 + byte a, b, c;
1.155 + char[] buf = new char[4];
1.156 + if (bufsize == 1) {
1.157 + a = buffer[0];
1.158 + b = 0;
1.159 + c = 0;
1.160 + buf[0] = pem_array[(a >>> 2) & 0x3F];
1.161 + buf[1] = pem_array[((a << 4) & 0x30) + ((b >>> 4) & 0xf)];
1.162 + buf[2] = '='; // pad character
1.163 + buf[3] = '='; // pad character
1.164 + } else if (bufsize == 2) {
1.165 + a = buffer[0];
1.166 + b = buffer[1];
1.167 + c = 0;
1.168 + buf[0] = pem_array[(a >>> 2) & 0x3F];
1.169 + buf[1] = pem_array[((a << 4) & 0x30) + ((b >>> 4) & 0xf)];
1.170 + buf[2] = pem_array[((b << 2) & 0x3c) + ((c >>> 6) & 0x3)];
1.171 + buf[3] = '='; // pad character
1.172 + } else {
1.173 + a = buffer[0];
1.174 + b = buffer[1];
1.175 + c = buffer[2];
1.176 + buf[0] = pem_array[(a >>> 2) & 0x3F];
1.177 + buf[1] = pem_array[((a << 4) & 0x30) + ((b >>> 4) & 0xf)];
1.178 + buf[2] = pem_array[((b << 2) & 0x3c) + ((c >>> 6) & 0x3)];
1.179 + buf[3] = pem_array[c & 0x3F];
1.180 + }
1.181 + try {
1.182 + outWriter.writeCharacters(buf, 0, 4);
1.183 + } catch (XMLStreamException ex) {
1.184 + Logger.getLogger(Base64EncoderStream.class.getName()).log(Level.SEVERE, null, ex);
1.185 + throw new IOException(ex);
1.186 + }
1.187 + }
1.188 +
1.189 +// public static void main(String argv[]) throws Exception {
1.190 +// FileInputStream infile = new FileInputStream(new File(argv[0]));
1.191 +// StringWriter sw = new StringWriter();
1.192 +// XMLStreamWriterImpl wi = new XMLStreamWriterImpl(sw, null);
1.193 +// ByteArrayOutputStream baos = new ByteArrayOutputStream();
1.194 +// Base64EncoderStream encoder = new Base64EncoderStream(wi, baos);
1.195 +// int c;
1.196 +//
1.197 +// while ((c = infile.read()) != -1)
1.198 +// encoder.write(c);
1.199 +// encoder.close();
1.200 +//
1.201 +// System.out.println("SW: " + sw.toString());
1.202 +// System.out.println("BAOS: " + baos.toString());
1.203 +//
1.204 +// }
1.205 +}
