Mercurial > hg > blitz_condensed
view src/com/go/trove/util/DeflaterOutputStream.java @ 34:6f68e94c1fb8 default tip
Add CondensedStats monitoring utility, equivalent to vmstat
author | Dominic Cleal <dominic-cleal@cdo2.com> |
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date | Thu, 05 Aug 2010 11:07:25 +0100 |
parents | 3dc0c5604566 |
children |
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/* ==================================================================== * Trove - Copyright (c) 1997-2001 Walt Disney Internet Group * ==================================================================== * The Tea Software License, Version 1.1 * * Copyright (c) 2000 Walt Disney Internet Group. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. The end-user documentation included with the redistribution, * if any, must include the following acknowledgment: * "This product includes software developed by the * Walt Disney Internet Group (http://opensource.go.com/)." * Alternately, this acknowledgment may appear in the software itself, * if and wherever such third-party acknowledgments normally appear. * * 4. The names "Tea", "TeaServlet", "Kettle", "Trove" and "BeanDoc" must * not be used to endorse or promote products derived from this * software without prior written permission. For written * permission, please contact opensource@dig.com. * * 5. Products derived from this software may not be called "Tea", * "TeaServlet", "Kettle" or "Trove", nor may "Tea", "TeaServlet", * "Kettle", "Trove" or "BeanDoc" appear in their name, without prior * written permission of the Walt Disney Internet Group. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE WALT DISNEY INTERNET GROUP OR ITS * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ==================================================================== * * For more information about Tea, please see http://opensource.go.com/. */ package com.go.trove.util; import java.io.*; /****************************************************************************** * Just like {@link java.util.zip.DeflaterOutputStream}, except uses a * different {@link Deflater} implementation. * * @author Brian S O'Neill * @version * <!--$$Revision: 1.1 $-->, <!--$$JustDate:--> 01/06/13 <!-- $--> */ public class DeflaterOutputStream extends FilterOutputStream { protected Deflater mDeflater; protected byte[] mBuffer; public DeflaterOutputStream(OutputStream out, Deflater def, byte[] buf) { super(out); mDeflater = def; mBuffer = buf; } public DeflaterOutputStream(OutputStream out, Deflater def, int size) { this(out, def, new byte[size]); } public DeflaterOutputStream(OutputStream out, Deflater def) { this(out, def, 512); } public DeflaterOutputStream(OutputStream out) { this(out, new Deflater()); } public void write(int b) throws IOException { write(new byte[]{(byte)b}, 0, 1); } public void write(byte[] b, int off, int len) throws IOException { if (mDeflater.finished()) { throw new IOException("write beyond end of stream"); } mDeflater.setInput(b, off, len); while (!mDeflater.needsInput()) { deflate(); } } public void flush() throws IOException { if (!mDeflater.finished()) { mDeflater.flush(); int len; do { len = deflate(); } while (len == mBuffer.length); } } public void fullFlush() throws IOException { if (!mDeflater.finished()) { mDeflater.fullFlush(); int len; do { len = deflate(); } while (len == mBuffer.length); } } public void finish() throws IOException { if (!mDeflater.finished()) { mDeflater.finish(); do { deflate(); } while (!mDeflater.finished()); } } public void close() throws IOException { finish(); super.close(); } private int deflate() throws IOException { int len = mDeflater.deflate(mBuffer, 0, mBuffer.length); if (len > 0) { out.write(mBuffer, 0, len); } return len; } }