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

Tue, 06 Mar 2012 16:09:35 -0800

author
ohair
date
Tue, 06 Mar 2012 16:09:35 -0800
changeset 286
f50545b5e2f1
child 368
0989ad8c0860
permissions
-rw-r--r--

7150322: Stop using drop source bundles in jaxws
Reviewed-by: darcy, ohrstrom

ohair@286 1 /*
ohair@286 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
ohair@286 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
ohair@286 4 *
ohair@286 5 * This code is free software; you can redistribute it and/or modify it
ohair@286 6 * under the terms of the GNU General Public License version 2 only, as
ohair@286 7 * published by the Free Software Foundation. Oracle designates this
ohair@286 8 * particular file as subject to the "Classpath" exception as provided
ohair@286 9 * by Oracle in the LICENSE file that accompanied this code.
ohair@286 10 *
ohair@286 11 * This code is distributed in the hope that it will be useful, but WITHOUT
ohair@286 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
ohair@286 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
ohair@286 14 * version 2 for more details (a copy is included in the LICENSE file that
ohair@286 15 * accompanied this code).
ohair@286 16 *
ohair@286 17 * You should have received a copy of the GNU General Public License version
ohair@286 18 * 2 along with this work; if not, write to the Free Software Foundation,
ohair@286 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
ohair@286 20 *
ohair@286 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@286 22 * or visit www.oracle.com if you need additional information or have any
ohair@286 23 * questions.
ohair@286 24 */
ohair@286 25
ohair@286 26 /*
ohair@286 27 * @(#)QDecoderStream.java 1.5 02/03/27
ohair@286 28 */
ohair@286 29
ohair@286 30
ohair@286 31
ohair@286 32 package com.sun.xml.internal.messaging.saaj.packaging.mime.util;
ohair@286 33
ohair@286 34 import java.io.IOException;
ohair@286 35 import java.io.InputStream;
ohair@286 36
ohair@286 37 /**
ohair@286 38 * This class implements a Q Decoder as defined in RFC 2047
ohair@286 39 * for decoding MIME headers. It subclasses the QPDecoderStream class.
ohair@286 40 *
ohair@286 41 * @author John Mani
ohair@286 42 */
ohair@286 43
ohair@286 44 public class QDecoderStream extends QPDecoderStream {
ohair@286 45
ohair@286 46 /**
ohair@286 47 * Create a Q-decoder that decodes the specified input stream.
ohair@286 48 * @param in the input stream
ohair@286 49 */
ohair@286 50 public QDecoderStream(InputStream in) {
ohair@286 51 super(in);
ohair@286 52 }
ohair@286 53
ohair@286 54 /**
ohair@286 55 * Read the next decoded byte from this input stream. The byte
ohair@286 56 * is returned as an <code>int</code> in the range <code>0</code>
ohair@286 57 * to <code>255</code>. If no byte is available because the end of
ohair@286 58 * the stream has been reached, the value <code>-1</code> is returned.
ohair@286 59 * This method blocks until input data is available, the end of the
ohair@286 60 * stream is detected, or an exception is thrown.
ohair@286 61 *
ohair@286 62 * @return the next byte of data, or <code>-1</code> if the end of the
ohair@286 63 * stream is reached.
ohair@286 64 * @exception IOException if an I/O error occurs.
ohair@286 65 */
ohair@286 66 public int read() throws IOException {
ohair@286 67 int c = in.read();
ohair@286 68
ohair@286 69 if (c == '_') // Return '_' as ' '
ohair@286 70 return ' ';
ohair@286 71 else if (c == '=') {
ohair@286 72 // QP Encoded atom. Get the next two bytes ..
ohair@286 73 ba[0] = (byte)in.read();
ohair@286 74 ba[1] = (byte)in.read();
ohair@286 75 // .. and decode them
ohair@286 76 try {
ohair@286 77 return ASCIIUtility.parseInt(ba, 0, 2, 16);
ohair@286 78 } catch (NumberFormatException nex) {
ohair@286 79 throw new IOException("Error in QP stream " + nex.getMessage());
ohair@286 80 }
ohair@286 81 } else
ohair@286 82 return c;
ohair@286 83 }
ohair@286 84 }

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