/*
* Copyright (c) 2008, Harald Kuhr
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name "TwelveMonkeys" nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT OWNER 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.
*/
package com.twelvemonkeys.io.enc;
import java.io.OutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.zip.Deflater;
/**
* {@code Encoder} implementation for standard DEFLATE encoding.
* <p/>
*
* @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
* @version $Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/main/java/com/twelvemonkeys/io/enc/DeflateEncoder.java#2 $
*
* @see <a href="http://tools.ietf.org/html/rfc1951">RFC 1951</a>
* @see Deflater
* @see InflateDecoder
* @see java.util.zip.DeflaterOutputStream
*/
final class DeflateEncoder implements Encoder {
private final Deflater deflater;
private final byte[] buffer = new byte[1024];
public DeflateEncoder() {
this(new Deflater(Deflater.DEFAULT_COMPRESSION, true)); // TODO: Should we use "no wrap"?
}
public DeflateEncoder(final Deflater pDeflater) {
if (pDeflater == null) {
throw new IllegalArgumentException("deflater == null");
}
deflater = pDeflater;
}
public void encode(final OutputStream stream, ByteBuffer buffer)
throws IOException
{
System.out.println("DeflateEncoder.encode");
deflater.setInput(buffer.array(), buffer.arrayOffset() + buffer.position(), buffer.remaining());
flushInputToStream(stream);
}
private void flushInputToStream(final OutputStream pStream) throws IOException {
System.out.println("DeflateEncoder.flushInputToStream");
if (deflater.needsInput()) {
System.out.println("Foo");
}
while (!deflater.needsInput()) {
int deflated = deflater.deflate(buffer, 0, buffer.length);
pStream.write(buffer, 0, deflated);
System.out.println("flushed " + deflated);
}
}
// public void flush() {
// deflater.finish();
// }
}