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/*******************************************************************************
* Copyright (c) 2007 compeople AG and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* compeople AG (Stefan Liebig) - initial API and implementation
* IBM Corporation - bug fixes and enhancements
*******************************************************************************/
package org.eclipse.equinox.internal.p2.sar;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
/**
* The DirectByteArrayOutputStream discloses its guts (internal byte buffer and
* byte buffer length) to avoid unnecessary allocation of byte arrays usually
* involved with toByteArray().
*/
public class DirectByteArrayOutputStream extends ByteArrayOutputStream {
/**
* Creates a new direct byte array output stream. The buffer capacity is
* initially as defined by super class.
*/
public DirectByteArrayOutputStream() {
super();
}
/**
* Creates a new byte array output stream, with a buffer capacity of the
* specified size, in bytes.
*
* @param size
* the initial size.
* @throws IllegalArgumentException
* if size is negative.
*/
public DirectByteArrayOutputStream(int size) {
super(size);
}
/**
* Return the actual internal byte buffer.
*
* @return internal byte buffer
*/
public final byte[] getBuffer() {
return super.buf;
}
/**
* Return the actual length of the internal byte buffer.
*
* @return actual length of the buffer
*/
public final int getBufferLength() {
return super.count;
}
/**
* Return an input stream containing all the (shared) bytes this output
* stream has already consumed.
*
* @return ByteArrayInputStream
*/
public ByteArrayInputStream getInputStream() {
return new ByteArrayInputStream(super.buf, 0, super.count);
}
}
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