1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/jaxws_classes/com/sun/xml/internal/messaging/saaj/packaging/mime/util/QPEncoderStream.java Wed Apr 27 01:27:09 2016 +0800
1.3 @@ -0,0 +1,199 @@
1.4 +/*
1.5 + * Copyright (c) 1997, 2012, 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 +/*
1.30 + * @(#)QPEncoderStream.java 1.6 02/03/27
1.31 + */
1.32 +
1.33 +
1.34 +
1.35 +package com.sun.xml.internal.messaging.saaj.packaging.mime.util;
1.36 +
1.37 +import java.io.*;
1.38 +
1.39 +/**
1.40 + * This class implements a Quoted Printable Encoder. It is implemented as
1.41 + * a FilterOutputStream, so one can just wrap this class around
1.42 + * any output stream and write bytes into this filter. The Encoding
1.43 + * is done as the bytes are written out.
1.44 + *
1.45 + * @author John Mani
1.46 + */
1.47 +
1.48 +public class QPEncoderStream extends FilterOutputStream {
1.49 + private int count = 0; // number of bytes that have been output
1.50 + private int bytesPerLine; // number of bytes per line
1.51 + private boolean gotSpace = false;
1.52 + private boolean gotCR = false;
1.53 +
1.54 + /**
1.55 + * Create a QP encoder that encodes the specified input stream
1.56 + * @param out the output stream
1.57 + * @param bytesPerLine the number of bytes per line. The encoder
1.58 + * inserts a CRLF sequence after this many number
1.59 + * of bytes.
1.60 + */
1.61 + public QPEncoderStream(OutputStream out, int bytesPerLine) {
1.62 + super(out);
1.63 + // Subtract 1 to account for the '=' in the soft-return
1.64 + // at the end of a line
1.65 + this.bytesPerLine = bytesPerLine - 1;
1.66 + }
1.67 +
1.68 + /**
1.69 + * Create a QP encoder that encodes the specified input stream.
1.70 + * Inserts the CRLF sequence after outputting 76 bytes.
1.71 + * @param out the output stream
1.72 + */
1.73 + public QPEncoderStream(OutputStream out) {
1.74 + this(out, 76);
1.75 + }
1.76 +
1.77 + /**
1.78 + * Encodes <code>len</code> bytes from the specified
1.79 + * <code>byte</code> array starting at offset <code>off</code> to
1.80 + * this output stream.
1.81 + *
1.82 + * @param b the data.
1.83 + * @param off the start offset in the data.
1.84 + * @param len the number of bytes to write.
1.85 + * @exception IOException if an I/O error occurs.
1.86 + */
1.87 + public void write(byte[] b, int off, int len) throws IOException {
1.88 + for (int i = 0; i < len; i++)
1.89 + write(b[off + i]);
1.90 + }
1.91 +
1.92 + /**
1.93 + * Encodes <code>b.length</code> bytes to this output stream.
1.94 + * @param b the data to be written.
1.95 + * @exception IOException if an I/O error occurs.
1.96 + */
1.97 + public void write(byte[] b) throws IOException {
1.98 + write(b, 0, b.length);
1.99 + }
1.100 +
1.101 + /**
1.102 + * Encodes the specified <code>byte</code> to this output stream.
1.103 + * @param c the <code>byte</code>.
1.104 + * @exception IOException if an I/O error occurs.
1.105 + */
1.106 + public void write(int c) throws IOException {
1.107 + c = c & 0xff; // Turn off the MSB.
1.108 + if (gotSpace) { // previous character was <SPACE>
1.109 + if (c == '\r' || c == '\n')
1.110 + // if CR/LF, we need to encode the <SPACE> char
1.111 + output(' ', true);
1.112 + else // no encoding required, just output the char
1.113 + output(' ', false);
1.114 + gotSpace = false;
1.115 + }
1.116 +
1.117 + if (c == '\r') {
1.118 + gotCR = true;
1.119 + outputCRLF();
1.120 + } else {
1.121 + if (c == '\n') {
1.122 + if (gotCR)
1.123 + // This is a CRLF sequence, we already output the
1.124 + // corresponding CRLF when we got the CR, so ignore this
1.125 + ;
1.126 + else
1.127 + outputCRLF();
1.128 + } else if (c == ' ') {
1.129 + gotSpace = true;
1.130 + } else if (c < 040 || c >= 0177 || c == '=')
1.131 + // Encoding required.
1.132 + output(c, true);
1.133 + else // No encoding required
1.134 + output(c, false);
1.135 + // whatever it was, it wasn't a CR
1.136 + gotCR = false;
1.137 + }
1.138 + }
1.139 +
1.140 + /**
1.141 + * Flushes this output stream and forces any buffered output bytes
1.142 + * to be encoded out to the stream.
1.143 + * @exception IOException if an I/O error occurs.
1.144 + */
1.145 + public void flush() throws IOException {
1.146 + out.flush();
1.147 + }
1.148 +
1.149 + /**
1.150 + * Forces any buffered output bytes to be encoded out to the stream
1.151 + * and closes this output stream
1.152 + */
1.153 + public void close() throws IOException {
1.154 + out.close();
1.155 + }
1.156 +
1.157 + private void outputCRLF() throws IOException {
1.158 + out.write('\r');
1.159 + out.write('\n');
1.160 + count = 0;
1.161 + }
1.162 +
1.163 + // The encoding table
1.164 + private final static char hex[] = {
1.165 + '0','1', '2', '3', '4', '5', '6', '7',
1.166 + '8','9', 'A', 'B', 'C', 'D', 'E', 'F'
1.167 + };
1.168 +
1.169 + protected void output(int c, boolean encode) throws IOException {
1.170 + if (encode) {
1.171 + if ((count += 3) > bytesPerLine) {
1.172 + out.write('=');
1.173 + out.write('\r');
1.174 + out.write('\n');
1.175 + count = 3; // set the next line's length
1.176 + }
1.177 + out.write('=');
1.178 + out.write(hex[c >> 4]);
1.179 + out.write(hex[c & 0xf]);
1.180 + } else {
1.181 + if (++count > bytesPerLine) {
1.182 + out.write('=');
1.183 + out.write('\r');
1.184 + out.write('\n');
1.185 + count = 1; // set the next line's length
1.186 + }
1.187 + out.write(c);
1.188 + }
1.189 + }
1.190 +
1.191 + /**** begin TEST program ***
1.192 + public static void main(String argv[]) throws Exception {
1.193 + FileInputStream infile = new FileInputStream(argv[0]);
1.194 + QPEncoderStream encoder = new QPEncoderStream(System.out);
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 + *** end TEST program ***/
1.202 +}
