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// 
// ========================================================================
// Copyright (c) 1995-2022 Mort Bay Consulting Pty Ltd and others.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
// 
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
// 
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
// 
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
// 
package org.eclipse.jetty.server.handler.gzip;

import java.nio.ByteBuffer;
import org.eclipse.jetty.http.GZIPContentDecoder;
import org.eclipse.jetty.io.ByteBufferPool;
import org.eclipse.jetty.server.HttpInput;
import org.eclipse.jetty.server.HttpInput.Content;
import org.eclipse.jetty.util.component.Destroyable;

/**
 *  An HttpInput Interceptor that inflates GZIP encoded request content.
 *
 * @deprecated The Eclipse Jetty and Apache Felix Http Jetty packages are no longer supported.
 */
@Deprecated(since = "2021-05-27")
public class GzipHttpInputInterceptor implements HttpInput.Interceptor, Destroyable {

    private final Decoder _decoder;

    private ByteBuffer _chunk;

    public GzipHttpInputInterceptor(ByteBufferPool pool, int bufferSize) {
        _decoder = new Decoder(pool, bufferSize);
    }

    @Override
    public Content readFrom(Content content) {
        _decoder.decodeChunks(content.getByteBuffer());
        final ByteBuffer chunk = _chunk;
        if (chunk == null)
            return null;
        return new Content(chunk) {

            @Override
            public void succeeded() {
                _decoder.release(chunk);
            }

            @Override
            public void failed(Throwable x) {
                _decoder.release(chunk);
            }
        };
    }

    @Override
    public void destroy() {
        _decoder.destroy();
    }

    // @deprecated The Eclipse Jetty and Apache Felix Http Jetty packages are no longer supported.
    @Deprecated(since = "2021-05-27")
    private class Decoder extends GZIPContentDecoder {

        private Decoder(ByteBufferPool pool, int bufferSize) {
            super(pool, bufferSize);
        }

        @Override
        protected boolean decodedChunk(final ByteBuffer chunk) {
            _chunk = chunk;
            return true;
        }

        @Override
        public void decodeChunks(ByteBuffer compressed) {
            _chunk = null;
            super.decodeChunks(compressed);
        }
    }
}