/* * Copyright 2010 BetaSteward_at_googlemail.com. 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. * * THIS SOFTWARE IS PROVIDED BY BetaSteward_at_googlemail.com ``AS IS'' AND ANY EXPRESS 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 BetaSteward_at_googlemail.com OR * 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. * * The views and conclusions contained in the software and documentation are those of the * authors and should not be interpreted as representing official policies, either expressed * or implied, of BetaSteward_at_googlemail.com. */ package mage.util; import java.io.InputStream; import java.io.OutputStream; /** * ByteArrayOutputStream implementation that doesn't synchronize methods * and doesn't copy the data on toByteArray(). */ public class FastByteArrayOutputStream extends OutputStream { /** * Buffer and size */ protected byte[] buf = null; protected int size = 0; /** * Constructs a stream with buffer capacity size 5K */ public FastByteArrayOutputStream() { this(5 * 1024); } /** * Constructs a stream with the given initial size */ public FastByteArrayOutputStream(int initSize) { this.size = 0; this.buf = new byte[initSize]; } /** * Ensures that we have a large enough buffer for the given size. */ private void verifyBufferSize(int sz) { if (sz > buf.length) { byte[] old = buf; buf = new byte[Math.max(sz, 2 * buf.length )]; System.arraycopy(old, 0, buf, 0, old.length); old = null; } } public int getSize() { return size; } /** * Returns the byte array containing the written data. Note that this * array will almost always be larger than the amount of data actually * written. */ public byte[] getByteArray() { return buf; } @Override public final void write(byte b[]) { verifyBufferSize(size + b.length); System.arraycopy(b, 0, buf, size, b.length); size += b.length; } @Override public final void write(byte b[], int off, int len) { verifyBufferSize(size + len); System.arraycopy(b, off, buf, size, len); size += len; } @Override public final void write(int b) { verifyBufferSize(size + 1); buf[size++] = (byte) b; } public void reset() { size = 0; } /** * Returns a ByteArrayInputStream for reading back the written data */ public InputStream getInputStream() { return new FastByteArrayInputStream(buf, size); } }