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Fork of Esoteric Software's Kryo built by Nathan Sweet that replaces Minlog with slf4j as the logging facade. This contains the shaded reflectasm jar to prevent conflicts with other versions of asm.
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/* Copyright (c) 2008, Nathan Sweet
 * 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 of Esoteric Software 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 HOLDER 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.esotericsoftware.kryo.io;

import java.io.IOException;
import java.io.InputStream;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.esotericsoftware.kryo.KryoException;

/** An InputStream that reads lengths and chunks of data from another OutputStream, allowing chunks to be skipped.
 * @author Nathan Sweet  */
public class InputChunked extends Input {
	private static final Logger LOGGER = LoggerFactory.getLogger(InputChunked.class);
	
	private int chunkSize = -1;

	/** Creates an uninitialized InputChunked with a buffer size of 2048. The InputStream must be set before it can be used. */
	public InputChunked () {
		super(2048);
	}

	/** Creates an uninitialized InputChunked. The InputStream must be set before it can be used. */
	public InputChunked (int bufferSize) {
		super(bufferSize);
	}

	/** Creates an InputChunked with a buffer size of 2048. */
	public InputChunked (InputStream inputStream) {
		super(inputStream, 2048);
	}

	public InputChunked (InputStream inputStream, int bufferSize) {
		super(inputStream, bufferSize);
	}

	public void setInputStream (InputStream inputStream) {
		super.setInputStream(inputStream);
		chunkSize = -1;
	}

	public void setBuffer (byte[] bytes, int offset, int count) {
		super.setBuffer(bytes, offset, count);
		chunkSize = -1;
	}

	public void rewind () {
		super.rewind();
		chunkSize = -1;
	}

	protected int fill (byte[] buffer, int offset, int count) throws KryoException {
		if (chunkSize == -1) // No current chunk, expect a new chunk.
			readChunkSize();
		else if (chunkSize == 0) // End of chunks.
			return -1;
		int actual = super.fill(buffer, offset, Math.min(chunkSize, count));
		chunkSize -= actual;
		if (chunkSize == 0) readChunkSize(); // Read next chunk size.
		return actual;
	}

	private void readChunkSize () {
		try {
			InputStream inputStream = getInputStream();
			for (int offset = 0, result = 0; offset < 32; offset += 7) {
				int b = inputStream.read();
				if (b == -1) throw new KryoException("Buffer underflow.");
				result |= (b & 0x7F) << offset;
				if ((b & 0x80) == 0) {
					chunkSize = result;
					LOGGER.trace("readChunkSize : Read chunk: {}", chunkSize);
					return;
				}
			}
		} catch (IOException ex) {
			throw new KryoException(ex);
		}
		throw new KryoException("Malformed integer.");
	}

	/** Advances the stream to the next set of chunks. InputChunked will appear to hit the end of the data until this method is
	 * called. */
	public void nextChunks () {
		if (chunkSize == -1) readChunkSize(); // No current chunk, expect a new chunk.
		while (chunkSize > 0)
			skip(chunkSize);
		chunkSize = -1;
		LOGGER.trace("nextChunks : Next chunks.");
	}
}