jdk/test/java/lang/instrument/NamedBuffer.java
author chegar
Tue, 09 Aug 2011 16:39:04 +0100
changeset 10150 dee4cb73adc3
parent 5506 202f599c92aa
permissions -rw-r--r--
7073295: TEST_BUG: test/java/lang/instrument/ManifestTest.sh causing havoc (win) Reviewed-by: mchung
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/*
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 * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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import  java.io.*;
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/*
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 * Copyright 2003 Wily Technology, Inc.
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 */
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public class NamedBuffer
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{
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    private final String    fName;
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    private final byte[]    fBuffer;
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    public
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    NamedBuffer(    String  name,
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                    byte[]  buffer)
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        {
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        fName =     name;
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        fBuffer =   buffer;
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        }
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    public
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    NamedBuffer(    String      name,
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                    InputStream stream)
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        throws IOException
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        {
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        this(   name,
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                loadBufferFromStream(stream));
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        }
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    public String
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    getName()
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        {
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        return fName;
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        }
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    public byte[]
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    getBuffer()
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        {
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        return fBuffer;
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        }
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    public static byte[]
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    loadBufferFromStream(InputStream stream)
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        throws IOException
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        {
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        // hack for now, just assume the stream will fit in our reasonable size buffer.
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        // if not, panic
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        int bufferLimit = 200 * 1024;
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        byte[]  readBuffer = new byte[bufferLimit];
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        int actualSize = stream.read(readBuffer);
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        if ( actualSize >= bufferLimit )
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            {
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            // if there might be more bytes, just surrender
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            throw new IOException("too big for buffer");
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            }
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        byte[] resultBuffer = new byte[actualSize];
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        System.arraycopy(   readBuffer,
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                            0,
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                            resultBuffer,
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                            0,
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                            actualSize);
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        return resultBuffer;
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        }
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}