org.eclipse.jetty.client.util.ByteBufferContentProvider Maven / Gradle / Ivy

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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.client.util;

import java.nio.ByteBuffer;
import java.util.Iterator;
import java.util.NoSuchElementException;
import org.eclipse.jetty.client.api.ContentProvider;

/**
 *  A {@link ContentProvider} for {@link ByteBuffer}s.
 *  
 *  The position and limit of the {@link ByteBuffer}s passed to the constructor are not modified,
 *  and each invocation of the {@link #iterator()} method returns a {@link ByteBuffer#slice() slice}
 *  of the original {@link ByteBuffer}.
 *
 * @deprecated The Eclipse Jetty and Apache Felix Http Jetty packages are no longer supported.
 */
@Deprecated(since = "2021-05-27")
public class ByteBufferContentProvider extends AbstractTypedContentProvider {

    private final ByteBuffer[] buffers;

    private final int length;

    public ByteBufferContentProvider(ByteBuffer... buffers) {
        this("application/octet-stream", buffers);
    }

    public ByteBufferContentProvider(String contentType, ByteBuffer... buffers) {
        super(contentType);
        this.buffers = buffers;
        int length = 0;
        for (ByteBuffer buffer : buffers) {
            length += buffer.remaining();
        }
        this.length = length;
    }

    @Override
    public long getLength() {
        return length;
    }

    @Override
    public boolean isReproducible() {
        return true;
    }

    @Override
    public Iterator iterator() {
        return new Iterator() {

            private int index;

            @Override
            public boolean hasNext() {
                return index < buffers.length;
            }

            @Override
            public ByteBuffer next() {
                try {
                    ByteBuffer buffer = buffers[index];
                    buffers[index] = buffer.slice();
                    ++index;
                    return buffer;
                } catch (ArrayIndexOutOfBoundsException x) {
                    throw new NoSuchElementException();
                }
            }
        };
    }
}