데이터 압축(SharpZip)

유니티 데이터 통신 압축용으로 사용 중.

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using ICSharpCode.SharpZipLib.BZip2;

public class ZipHelper
{
    public static byte[] Zip(byte[] data)
    {
        return Zip(data, 0, data.Length);
    }

    public static byte[] Unzip(byte[] data)
    {
        return Unzip(data, 0, data.Length);
    }

    public static byte[] Zip(byte[] data, int offset, int size)
    {
        MemoryStream inStream = new MemoryStream(data, offset, size);
        MemoryStream outStream = new MemoryStream();
        BZip2.Compress(inStream, outStream, false, 3);

        byte[] result = outStream.ToArray();
        inStream.Close();
        outStream.Close();

        return result;
    }

    public static byte[] Unzip(byte[] data, int offset, int size)
    {
        MemoryStream inStream = new MemoryStream(data, offset, size);
        MemoryStream outStream = new MemoryStream();
        BZip2.Decompress(inStream, outStream, false);

        byte[] result = outStream.ToArray();
        inStream.Close();
        outStream.Close();

        return result;
    }
}

// 예제
//class Program
//{
//    static void Main(string[] args)
//    {

//        byte[] array = new byte[1000];
//        for (int i = 0; i < array.Length; i++)
//        {
//            array[i] = (byte)(i % 255);
//        }
//        byte[] compress = ZipHelper.Zip(array);
//        byte[] decompress = ZipHelper.Unzip(array);


//    }

//}

 

 

[SharpZip dll 다운로드] https://www.nuget.org/packages/SharpZipLib/

 

[참조] https://nahyungmin.tistory.com/38