jdk8-mips64-public/jaxws: comparison src/share/jaxws_classes/com/sun/xml/internal/messaging/saaj/packaging/mime/util/BASE64DecoderStream.java

--1:000000000000
+:373ffda63c9a
+/*
+* 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.
+*/
+/*
+* @(#)BASE64DecoderStream.java       1.8 02/03/27
+*/
+package com.sun.xml.internal.messaging.saaj.packaging.mime.util;
+import java.io.*;
+/**
+* This class implements a BASE64 Decoder. It is implemented as
+* a FilterInputStream, so one can just wrap this class around
+* any input stream and read bytes from this filter. The decoding
+* is done as the bytes are read out.
+*
+* @author John Mani
+* @author Bill Shannon
+*/
+public class BASE64DecoderStream extends FilterInputStream {
+private byte[] buffer;      // cache of decoded bytes
+private int bufsize = 0;    // size of the cache
+private int index = 0;      // index into the cache
+/**
+* Create a BASE64 decoder that decodes the specified input stream
+* @param in        the input stream
+*/
+public BASE64DecoderStream(InputStream in) {
+super(in);
+buffer = new byte[3];
+}
+/**
+* Read the next decoded byte from this input stream. The byte
+* is returned as an <code>int</code> in the range <code>0</code>
+* to <code>255</code>. If no byte is available because the end of
+* the stream has been reached, the value <code>-1</code> is returned.
+* This method blocks until input data is available, the end of the
+* stream is detected, or an exception is thrown.
+*
+* @return     next byte of data, or <code>-1</code> if the end of the
+*             stream is reached.
+* @exception  IOException  if an I/O error occurs.
+* @see        java.io.FilterInputStream#in
+*/
+public int read() throws IOException {
+if (index >= bufsize) {
+decode(); // Fills up buffer
+if (bufsize == 0) // buffer is empty
+return -1;
+index = 0; // reset index into buffer
+}
+return buffer[index++] & 0xff; // Zero off the MSB
+}
+/**
+* Reads up to <code>len</code> decoded bytes of data from this input stream
+* into an array of bytes. This method blocks until some input is
+* available.
+* <p>
+*
+* @param      buf   the buffer into which the data is read.
+* @param      off   the start offset of the data.
+* @param      len   the maximum number of bytes read.
+* @return     the total number of bytes read into the buffer, or
+*             <code>-1</code> if there is no more data because the end of
+*             the stream has been reached.
+* @exception  IOException  if an I/O error occurs.
+*/
+public int read(byte[] buf, int off, int len) throws IOException {
+int i, c;
+for (i = 0; i < len; i++) {
+if ((c = read()) == -1) {
+if (i == 0) // At end of stream, so we should
+i = -1; // return -1 , NOT 0.
+break;
+}
+buf[off+i] = (byte)c;
+}
+return i;
+}
+/**
+* Tests if this input stream supports marks. Currently this class
+* does not support marks
+*/
+public boolean markSupported() {
+return false; // Maybe later ..
+}
+/**
+* Returns the number of bytes that can be read from this input
+* stream without blocking. However, this figure is only
+* a close approximation in case the original encoded stream
+* contains embedded CRLFs; since the CRLFs are discarded, not decoded
+*/
+public int available() throws IOException {
+// This is only an estimate, since in.available()
+// might include CRLFs too ..
+return ((in.available() * 3)/4 + (bufsize-index));
+}
+/**
+* This character array provides the character to value map
+* based on RFC1521.
+*/
+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 final static byte pem_convert_array[] = new byte[256];
+static {
+for (int i = 0; i < 255; i++)
+pem_convert_array[i] = -1;
+for(int i = 0; i < pem_array.length; i++)
+pem_convert_array[pem_array[i]] = (byte) i;
+}
+/* The decoder algorithm */
+private byte[] decode_buffer = new byte[4];
+private void decode() throws IOException {
+bufsize = 0;
+/*
+* We need 4 valid base64 characters before we start decoding.
+* We skip anything that's not a valid base64 character (usually
+* just CRLF).
+*/
+int got = 0;
+while (got < 4) {
+int i = in.read();
+if (i == -1) {
+if (got == 0)
+return;     // EOF before any data is ok
+throw new IOException("Error in encoded stream, got " + got);
+}
+if (i >= 0 && i < 256 && i == '=' || pem_convert_array[i] != -1)
+decode_buffer[got++] = (byte)i;
+}
+byte a, b;
+a = pem_convert_array[decode_buffer[0] & 0xff];
+b = pem_convert_array[decode_buffer[1] & 0xff];
+// The first decoded byte
+buffer[bufsize++] = (byte)(((a << 2) & 0xfc) | ((b >>> 4) & 3));
+if (decode_buffer[2] == '=') // End of this BASE64 encoding
+return;
+a = b;
+b = pem_convert_array[decode_buffer[2] & 0xff];
+// The second decoded byte
+buffer[bufsize++] = (byte)(((a << 4) & 0xf0) | ((b >>> 2) & 0xf));
+if (decode_buffer[3] == '=') // End of this BASE64 encoding
+return;
+a = b;
+b = pem_convert_array[decode_buffer[3] & 0xff];
+// The third decoded byte
+buffer[bufsize++] = (byte)(((a << 6) & 0xc0) | (b & 0x3f));
+}
+/**
+* Base64 decode a byte array.  No line breaks are allowed.
+* This method is suitable for short strings, such as those
+* in the IMAP AUTHENTICATE protocol, but not to decode the
+* entire content of a MIME part.
+*
+* NOTE: inbuf may only contain valid base64 characters.
+*       Whitespace is not ignored.
+*/
+public static byte[] decode(byte[] inbuf) {
+int size = (inbuf.length / 4) * 3;
+if (size == 0)
+return inbuf;
+if (inbuf[inbuf.length - 1] == '=') {
+size--;
+if (inbuf[inbuf.length - 2] == '=')
+size--;
+}
+byte[] outbuf = new byte[size];
+int inpos = 0, outpos = 0;
+size = inbuf.length;
+while (size > 0) {
+byte a, b;
+a = pem_convert_array[inbuf[inpos++] & 0xff];
+b = pem_convert_array[inbuf[inpos++] & 0xff];
+// The first decoded byte
+outbuf[outpos++] = (byte)(((a << 2) & 0xfc) | ((b >>> 4) & 3));
+if (inbuf[inpos] == '=') // End of this BASE64 encoding
+return outbuf;
+a = b;
+b = pem_convert_array[inbuf[inpos++] & 0xff];
+// The second decoded byte
+outbuf[outpos++] = (byte)(((a << 4) & 0xf0) | ((b >>> 2) & 0xf));
+if (inbuf[inpos] == '=') // End of this BASE64 encoding
+return outbuf;
+a = b;
+b = pem_convert_array[inbuf[inpos++] & 0xff];
+// The third decoded byte
+outbuf[outpos++] = (byte)(((a << 6) & 0xc0) | (b & 0x3f));
+size -= 4;
+}
+return outbuf;
+}
+/*** begin TEST program ***
+public static void main(String argv[]) throws Exception {
+FileInputStream infile = new FileInputStream(argv[0]);
+BASE64DecoderStream decoder = new BASE64DecoderStream(infile);
+int c;
+while ((c = decoder.read()) != -1)
+System.out.print((char)c);
+System.out.flush();
+}
+*** end TEST program ***/
+}

Mercurial > jdk8-mips64-public > jaxws / file comparison

comparison: src/share/jaxws_classes/com/sun/xml/internal/messaging/saaj/packaging/mime/util/BASE64DecoderStream.java

src/share/jaxws_classes/com/sun/xml/internal/messaging/saaj/packaging/mime/util/BASE64DecoderStream.java