Thu, 31 Aug 2017 15:18:52 +0800
merge
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. Oracle designates this |
aoqi@0 | 8 | * particular file as subject to the "Classpath" exception as provided |
aoqi@0 | 9 | * by Oracle in the LICENSE file that accompanied this code. |
aoqi@0 | 10 | * |
aoqi@0 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 15 | * accompanied this code). |
aoqi@0 | 16 | * |
aoqi@0 | 17 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 20 | * |
aoqi@0 | 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 22 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 23 | * questions. |
aoqi@0 | 24 | */ |
aoqi@0 | 25 | |
aoqi@0 | 26 | /* |
aoqi@0 | 27 | * @(#)SharedInputStream.java 1.2 02/03/27 |
aoqi@0 | 28 | */ |
aoqi@0 | 29 | |
aoqi@0 | 30 | |
aoqi@0 | 31 | |
aoqi@0 | 32 | package com.sun.xml.internal.messaging.saaj.packaging.mime.internet; |
aoqi@0 | 33 | |
aoqi@0 | 34 | import java.io.InputStream; |
aoqi@0 | 35 | import java.io.OutputStream; |
aoqi@0 | 36 | |
aoqi@0 | 37 | // SAAJ doesn't utilize this, but I think it should. |
aoqi@0 | 38 | /** |
aoqi@0 | 39 | * An InputStream that is backed by data that can be shared by multiple |
aoqi@0 | 40 | * readers may implement this interface. This allows users of such an |
aoqi@0 | 41 | * InputStream to determine the current positionin the InputStream, and |
aoqi@0 | 42 | * to create new InputStreams representing a subset of the data in the |
aoqi@0 | 43 | * original InputStream. The new InputStream will access the same |
aoqi@0 | 44 | * underlying data as the original, without copying the data. |
aoqi@0 | 45 | * |
aoqi@0 | 46 | * @version 1.2, 02/03/27 |
aoqi@0 | 47 | * @author Bill Shannon |
aoqi@0 | 48 | * @since JavaMail 1.2 |
aoqi@0 | 49 | */ |
aoqi@0 | 50 | |
aoqi@0 | 51 | public interface SharedInputStream { |
aoqi@0 | 52 | /** |
aoqi@0 | 53 | * Return the current position in the InputStream, as an |
aoqi@0 | 54 | * offset from the beginning of the InputStream. |
aoqi@0 | 55 | * |
aoqi@0 | 56 | * @return the current position |
aoqi@0 | 57 | */ |
aoqi@0 | 58 | public long getPosition(); |
aoqi@0 | 59 | |
aoqi@0 | 60 | /** |
aoqi@0 | 61 | * Return a new InputStream representing a subset of the data |
aoqi@0 | 62 | * from this InputStream, starting at <code>start</code> (inclusive) |
aoqi@0 | 63 | * up to <code>end</code> (exclusive). <code>start</code> must be |
aoqi@0 | 64 | * non-negative. If <code>end</code> is -1, the new stream ends |
aoqi@0 | 65 | * at the same place as this stream. The returned InputStream |
aoqi@0 | 66 | * will also implement the SharedInputStream interface. |
aoqi@0 | 67 | * |
aoqi@0 | 68 | * @param start the starting position |
aoqi@0 | 69 | * @param end the ending position + 1 |
aoqi@0 | 70 | * @return the new stream |
aoqi@0 | 71 | */ |
aoqi@0 | 72 | public InputStream newStream(long start, long end); |
aoqi@0 | 73 | |
aoqi@0 | 74 | /** |
aoqi@0 | 75 | * Writes the specified region to another {@link OutputStream}. |
aoqi@0 | 76 | */ |
aoqi@0 | 77 | public void writeTo(long start,long end, OutputStream out); |
aoqi@0 | 78 | } |