using System;
using System.Collections.Generic;
using System.Text;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Configuration;
using System.IO;
using System.IO.Compression;
using ICSharpCode.SharpZipLib.Zip;
using Microsoft.Win32;


namespace RST_ReadSDData.APP_Code
{
   public class UnPackFile
    {
        public UnPackFile()
        {
            //
            //TODO: 在此处添加构造函数逻辑
            //
        }


        #region  解压文件 包括.rar 和zip

        /// <summary>
        ///解压文件
        /// </summary>
        /// <param name="fileFromUnZip">解压前的文件路径（绝对路径）</param>
        /// <param name="fileToUnZip">解压后的文件目录（绝对路径）</param>
        public static void UnpackFileRarOrZip(string fileFromUnZip, string fileToUnZip)
        {
            //获取压缩类型
            string unType = fileFromUnZip.Substring(fileFromUnZip.LastIndexOf(".") + 1, 3).ToLower();
            switch (unType)
            {
                case "rar":
                    UnRar(fileFromUnZip, fileToUnZip);
                    break;
                case "zip":
                    UnZip(fileFromUnZip, fileToUnZip);
                    break;
            }
        }


        #endregion



        #region  解压文件 .rar文件

        /// <summary>
        /// 解压
        /// </summary>
        /// <param name="unRarPatch"></param>
        /// <param name="rarPatch"></param>
        /// <param name="rarName"></param>
        /// <returns></returns>
        public static void UnRar(string fileFromUnZip, string fileToUnZip)
        {
            string the_rar;
            RegistryKey the_Reg;
            object the_Obj;
            string the_Info;

            try
            {
                the_Reg = Registry.LocalMachine.OpenSubKey(
                         @"SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\WinRAR.exe");
                the_Obj = the_Reg.GetValue("");
                the_rar = the_Obj.ToString();
                the_Reg.Close();
                //the_rar = the_rar.Substring(1, the_rar.Length - 7);

                if (Directory.Exists(fileToUnZip) == false)
                {
                    Directory.CreateDirectory(fileToUnZip);
                }
                the_Info = "x " + Path.GetFileName(fileFromUnZip) + " " + fileToUnZip + " -y";

                ProcessStartInfo the_StartInfo = new ProcessStartInfo();
                the_StartInfo.FileName = the_rar;
                the_StartInfo.Arguments = the_Info;
                the_StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
                the_StartInfo.WorkingDirectory = Path.GetDirectoryName(fileFromUnZip);//获取压缩包路径

                Process the_Process = new Process();
                the_Process.StartInfo = the_StartInfo;
                the_Process.Start();
                the_Process.WaitForExit();
                the_Process.Close();
            }
            catch (Exception ex)
            {
                throw ex;
            }
            //return unRarPatch;
        }

        #endregion



        #region  解压文件 .zip文件

        /// <summary>
        /// 解压功能(解压压缩文件到指定目录)
        /// </summary>
        /// <param name="FileToUpZip">待解压的文件</param>
        /// <param name="ZipedFolder">指定解压目标目录</param>
        public static void UnZip(string FileToUpZip, string ZipedFolder)
        {
            if (!File.Exists(FileToUpZip))
            {
                return;
            }

            if (!Directory.Exists(ZipedFolder))
            {
                Directory.CreateDirectory(ZipedFolder);
            }

            ZipInputStream s = null;
            ZipEntry theEntry = null;

            string fileName;
            FileStream streamWriter = null;
            try
            {
                s = new ZipInputStream(File.OpenRead(FileToUpZip));
                while ((theEntry = s.GetNextEntry()) != null)
                {

                    if (theEntry.Name != String.Empty)
                    {
                        fileName = Path.Combine(ZipedFolder, theEntry.Name);
                        ///判断文件路径是否是文件夹

                        if (fileName.EndsWith("/") || fileName.EndsWith("\\"))
                        {
                            Directory.CreateDirectory(fileName);
                            continue;
                        }

                        streamWriter = File.Create(fileName);
                        int size = 2048;
                        byte[] data = http://www.mamicode.com/new >                        while (true)
                        {
                            size = s.Read(data, 0, data.Length);
                            if (size > 0)
                            {
                                streamWriter.Write(data, 0, size);
                            }
                            else
                            {
                                break;
                            }
                        }
                    }
                }
            }
            finally
            {
                if (streamWriter != null)
                {
                    streamWriter.Close();
                    streamWriter = null;
                }
                if (theEntry != null)
                {
                    theEntry = null;
                }
                if (s != null)
                {
                    s.Close();
                    s = null;
                }
                GC.Collect();
                GC.Collect(1);
            }
        }


        #endregion
    }
}