SoftZipped.cs
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using System;
using System.IO;
using System.IO.Compression;
namespace HslCommunication.BasicFramework
{
/// <summary>
/// 一个负责压缩解压数据字节的类
/// </summary>
public class SoftZipped
{
// 压缩字节
// 1.创建压缩的数据流
// 2.设定compressStream为存放被压缩的文件流,并设定为压缩模式
// 3.将需要压缩的字节写到被压缩的文件流
/// <summary>
/// 压缩字节数据
/// </summary>
/// <param name="bytes">等待被压缩的数据</param>
/// <exception cref="ArgumentNullException"></exception>
/// <returns>压缩之后的字节数据</returns>
public static byte[] CompressBytes(byte[] bytes)
{
if (bytes == null) throw new ArgumentNullException("bytes");
using (MemoryStream compressStream = new MemoryStream())
{
using (var zipStream = new GZipStream(compressStream, CompressionMode.Compress))
zipStream.Write(bytes, 0, bytes.Length);
return compressStream.ToArray();
}
}
// 解压缩字节
// 1.创建被压缩的数据流
// 2.创建zipStream对象，并传入解压的文件流
// 3.创建目标流
// 4.zipStream拷贝到目标流
// 5.返回目标流输出字节
/// <summary>
/// 解压压缩后的数据
/// </summary>
/// <param name="bytes">压缩后的数据</param>
/// <exception cref="ArgumentNullException"></exception>
/// <returns>压缩前的原始字节数据</returns>
public static byte[] Decompress(byte[] bytes)
{
if (bytes == null) throw new ArgumentNullException("bytes");
using (var compressStream = new MemoryStream(bytes))
{
using (var zipStream = new GZipStream(compressStream, CompressionMode.Decompress))
{
using (var resultStream = new MemoryStream())
{
int readLength = 1024;
byte[] buf = new byte[readLength];
int len = 0;
while ((len = zipStream.Read(buf, 0, readLength)) > 0)
{
resultStream.Write(buf, 0, len);
}
return resultStream.ToArray();
}
}
}
}
}
}