src/org/objectweb/cjdbc/common/stream/encoding/ZipEncoding.java

説明を見る。

package org.objectweb.cjdbc.common.stream.encoding;

import java.io.BufferedOutputStream;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.zip.Deflater;
import java.util.zip.DeflaterOutputStream;
import java.util.zip.InflaterInputStream;

public class ZipEncoding
{
  public static final byte[] encode(byte[] data) throws IOException
  {
    ByteArrayInputStream bais = new ByteArrayInputStream(data);
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    BufferedOutputStream bos = new BufferedOutputStream(
        new DeflaterOutputStream(baos, new Deflater()));
    byte[] bdata = new byte[1024];
    int byteCount;
    while ((byteCount = bais.read(bdata, 0, 1024)) > -1)
    {
      bos.write(bdata, 0, byteCount);
    }
    bos.flush();
    bos.close();
    return baos.toByteArray();
  }

  public static final byte[] decode(byte[] data) throws IOException
  {
    InflaterInputStream input = new InflaterInputStream(
        new ByteArrayInputStream((data)));
    ByteArrayOutputStream baos = new ByteArrayOutputStream();

    byte[] bdata = new byte[1024];
    int byteCount;
    while ((byteCount = input.read(bdata, 0, 1024)) > -1)
      baos.write(bdata, 0, byteCount);
    baos.flush();
    baos.close();

    return baos.toByteArray();
  }
}

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