jaxws/src/java.xml.soap/share/classes/com/sun/xml/internal/messaging/saaj/packaging/mime/util/QPDecoderStream.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jaxws/src/java.xml.soap/share/classes/com/sun/xml/internal/messaging/saaj/packaging/mime/util/QPDecoderStream.java Sun Aug 17 15:52:15 2014 +0100
@@ -0,0 +1,198 @@
+/*
+ * Copyright (c) 1997, 2013, 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.
+ */
+
+/*
+ * @(#)QPDecoderStream.java 1.9 02/04/02
+ */
+
+
+
+package com.sun.xml.internal.messaging.saaj.packaging.mime.util;
+
+import java.io.*;
+
+/**
+ * This class implements a QP 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
+ */
+
+public class QPDecoderStream extends FilterInputStream {
+ protected byte[] ba = new byte[2];
+ protected int spaces = 0;
+
+ /**
+ * Create a Quoted Printable decoder that decodes the specified
+ * input stream.
+ * @param in the input stream
+ */
+ public QPDecoderStream(InputStream in) {
+ super(new PushbackInputStream(in, 2)); // pushback of size=2
+ }
+
+ /**
+ * 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 the next byte of data, or <code>-1</code> if the end of the
+ * stream is reached.
+ * @exception IOException if an I/O error occurs.
+ */
+ public int read() throws IOException {
+ if (spaces > 0) {
+ // We have cached space characters, return one
+ spaces--;
+ return ' ';
+ }
+
+ int c = in.read();
+
+ if (c == ' ') {
+ // Got space, keep reading till we get a non-space char
+ while ((c = in.read()) == ' ')
+ spaces++;
+
+ if (c == '\r' || c == '\n' || c == -1)
+ // If the non-space char is CR/LF/EOF, the spaces we got
+ // so far is junk introduced during transport. Junk 'em.
+ spaces = 0;
+ else {
+ // The non-space char is NOT CR/LF, the spaces are valid.
+ ((PushbackInputStream)in).unread(c);
+ c = ' ';
+ }
+ return c; // return either <SPACE> or <CR/LF>
+ }
+ else if (c == '=') {
+ // QP Encoded atom. Decode the next two bytes
+ int a = in.read();
+
+ if (a == '\n') {
+ /* Hmm ... not really confirming QP encoding, but lets
+ * allow this as a LF terminated encoded line .. and
+ * consider this a soft linebreak and recurse to fetch
+ * the next char.
+ */
+ return read();
+ } else if (a == '\r') {
+ // Expecting LF. This forms a soft linebreak to be ignored.
+ int b = in.read();
+ if (b != '\n')
+ /* Not really confirming QP encoding, but
+ * lets allow this as well.
+ */
+ ((PushbackInputStream)in).unread(b);
+ return read();
+ } else if (a == -1) {
+ // Not valid QP encoding, but we be nice and tolerant here !
+ return -1;
+ } else {
+ ba[0] = (byte)a;
+ ba[1] = (byte)in.read();
+ try {
+ return ASCIIUtility.parseInt(ba, 0, 2, 16);
+ } catch (NumberFormatException nex) {
+ /*
+ System.err.println(
+ "Illegal characters in QP encoded stream: " +
+ ASCIIUtility.toString(ba, 0, 2)
+ );
+ */
+
+ ((PushbackInputStream)in).unread(ba);
+ return c;
+ }
+ }
+ }
+ return c;
+ }
+
+ /**
+ * 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;
+ }
+
+ /**
+ * Returns the number of bytes that can be read from this input
+ * stream without blocking. The QP algorithm does not permit
+ * a priori knowledge of the number of bytes after decoding, so
+ * this method just invokes the <code>available</code> method
+ * of the original input stream.
+ */
+ public int available() throws IOException {
+ // This is bogus ! We don't really know how much
+ // bytes are available *after* decoding
+ return in.available();
+ }
+
+ /**** begin TEST program
+ public static void main(String argv[]) throws Exception {
+ FileInputStream infile = new FileInputStream(argv[0]);
+ QPDecoderStream decoder = new QPDecoderStream(infile);
+ int c;
+
+ while ((c = decoder.read()) != -1)
+ System.out.print((char)c);
+ System.out.println();
+ }
+ *** end TEST program ****/
+}