Compressor.java

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package org.pieShare.pieTools.pieUtilities.service.compressor;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.zip.DataFormatException;
import java.util.zip.Deflater;
import java.util.zip.Inflater;
import org.pieShare.pieTools.pieUtilities.service.base64Service.api.IBase64Service;
import org.pieShare.pieTools.pieUtilities.service.compressor.api.ICompressor;
import org.pieShare.pieTools.pieUtilities.service.pieLogger.PieLogger;

/**
 *
 * @author richy
 */
public class Compressor implements ICompressor {

	private IBase64Service base64Service;

	public void setBase64Service(IBase64Service base64Service) {
		this.base64Service = base64Service;
	}

	@Override
	public byte[] compressByteArray(byte[] data) throws IOException {
		ByteArrayOutputStream outStream = new ByteArrayOutputStream();

		Deflater deflater = new Deflater();

		deflater.setInput(base64Service.encode(data));

		deflater.finish();
		byte[] buffer = new byte[data.length];
		while (!deflater.finished()) {
			int count = deflater.deflate(buffer); // returns the generated code... index  
			outStream.write(buffer, 0, count);

		}
		deflater.reset();
		deflater.end();

		return base64Service.encode(outStream.toByteArray());

	}

	@Override
	public byte[] decompressByteArray(byte[] data) throws IOException, DataFormatException {

		ByteArrayOutputStream outStream = new ByteArrayOutputStream();

		Inflater inflater = new Inflater();

		inflater.setInput(base64Service.decode(data));

		// ByteArrayOutputStream outputStream = new ByteArrayOutputStream(data.length);
		byte[] buffer = new byte[data.length];
		while (!inflater.finished()) {
			int count = inflater.inflate(buffer);
			outStream.write(buffer, 0, count);

			if (inflater.needsInput()) {
				break;
			}

			if (inflater.needsDictionary()) {
				//ToDo: Check Problem with speziel chars (sonderzeichen);
			}
		}

		inflater.reset();
		inflater.end();

		return base64Service.decode(outStream.toByteArray());

	}

}