package com.example.HslCommunication.Core.Net;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;

/**
 * Created by DATHLIN on 2017/11/1.
 */

public class HslZipped {


    /***
     * 压缩GZip
     *
     * @param data
     * @return
     */
    public static byte[] CompressBytes(byte[] data) {
        byte[] b = null;
        try {
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            GZIPOutputStream gzip = new GZIPOutputStream(bos);
            gzip.write(data);
            gzip.finish();
            gzip.close();
            b = bos.toByteArray();
            bos.close();
        } catch (Exception ex) {
            ex.printStackTrace();
        }
        return b;
    }

    /***
     * 解压GZip
     *
     * @param data
     * @return
     */
    public static byte[] Decompress(byte[] data) {
        byte[] b = null;
        try {
            ByteArrayInputStream bis = new ByteArrayInputStream(data);
            GZIPInputStream gzip = new GZIPInputStream(bis);
            byte[] buf = new byte[1024];
            int num = -1;
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            while ((num = gzip.read(buf, 0, buf.length)) != -1) {
                baos.write(buf, 0, num);
            }
            b = baos.toByteArray();
            baos.flush();
            baos.close();
            gzip.close();
            bis.close();
        } catch (Exception ex) {
            ex.printStackTrace();
        }
        return b;
    }
}
