code/Athena0.0.1/tool/GZip.cs

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using System;
using System.Collections.Generic;
using System.IO;
using System.IO.Compression;
using System.Linq;
using System.Text;

namespace Athena.tool.Code
{
    public class GZip
    { 
        /// <summary>
        /// 压缩
        /// </summary>
        /// <param name="text">文本</param>
        public static string Compress(string text)
        {
            if (text.IsEmpty())
                return string.Empty;
            byte[] buffer = Encoding.UTF8.GetBytes(text);
            return Convert.ToBase64String(Compress(buffer));
        }

        /// <summary>
        /// 解压缩
        /// </summary>
        /// <param name="text">文本</param>
        public static string Decompress(string text)
        {
            if (text.IsEmpty())
                return string.Empty;
            byte[] buffer = Convert.FromBase64String(text);
            using (var ms = new MemoryStream(buffer))
            {
                using (var zip = new GZipStream(ms, CompressionMode.Decompress))
                {
                    using (var reader = new StreamReader(zip))
                    {
                        return reader.ReadToEnd();
                    }
                }
            }
        }

        /// <summary>
        /// 压缩
        /// </summary>
        /// <param name="buffer">字节流</param>
        public static byte[] Compress(byte[] buffer)
        {
            if (buffer == null)
                return null;
            using (var ms = new MemoryStream())
            {
                using (var zip = new GZipStream(ms, CompressionMode.Compress, true))
                {
                    zip.Write(buffer, 0, buffer.Length);
                }
                return ms.ToArray();
            }