ZipUtility 解压

using System;



using System.Collections.Generic;

using System.Text;

using Microsoft.Win32;

using System.Diagnostics;

using System.IO;

using ICSharpCode.SharpZipLib.Zip;

using SwireBev.Mobile.Utility;



namespace MobileTest

{

    public class ZipUtility

    {

        public delegate void ThreadStop(int zipType, int fileIndex, string status, string title);                                //线程操作完成

        public event ThreadStop threadStop;



        /// <summary>

        /// 写入ZIP

        /// </summary>

        /// <param name="zos"></param>

        /// <param name="topDirName"></param>

        /// <param name="pathStr"></param>

        /// <param name="index"></param>

        /// <param name="absolute"></param>

        private void addZipWrite(ZipOutputStream zos, string topDirName, string pathStr, int index, string absolute)

        {

            string strEntryName = pathStr;

            if (!topDirName.Equals(""))

            {

                strEntryName = pathStr.Replace(topDirName, "");

            }

            try

            {

                FileStream fs = File.OpenRead(pathStr);

                byte[] buffer = new byte[fs.Length];

                fs.Read(buffer, 0, buffer.Length);

                ZipEntry entry = new ZipEntry(Path.GetFileName(strEntryName));

                if (absolute.Equals("0"))

                {

                    entry = new ZipEntry(strEntryName);

                }

                zos.PutNextEntry(entry);

                zos.Write(buffer, 0, buffer.Length);

                fs.Close();

                threadStop(0, index, "OK", Path.GetFileName(strEntryName));

            }

            catch

            {

                threadStop(0, index, "Error", Path.GetFileName(strEntryName));

            }

        }



        /// <summary>

        /// 回调

        /// </summary>

        /// <param name="zos"></param>

        /// <param name="topDirName"></param>

        /// <param name="pathStr"></param>

        /// <param name="absolute"></param>

        private void addZipEntry(ZipOutputStream zos, string topDirName, string pathStr, string absolute)

        {

            if (!Path.GetFileName(pathStr).Equals(""))

            {

                addZipWrite(zos, topDirName, pathStr, 0, absolute);

            }

            else

            {

                DirectoryInfo di = new DirectoryInfo(pathStr);

                foreach (DirectoryInfo item in di.GetDirectories())

                {

                    addZipEntry(zos, topDirName, item.FullName, absolute);

                }

                int index = 0;

                foreach (FileInfo item in di.GetFiles())

                {

                    addZipWrite(zos, topDirName, item.FullName, index++, absolute);

                }

            }

        }





        

        /// <summary>  

        /// 压缩指定文件生成ZIP文件  

        /// </summary>  

        /// <param name="topDirName">顶层文件夹名称</param>  

        /// <param name="fileNamesToZip">待压缩文件列表</param>  

        /// <param name="ZipedFileName">ZIP文件</param>  

        /// <param name="CompressionLevel">压缩比</param>  

        /// <param name="password">密码</param>  

        /// <param name="comment">压缩文件注释文字</param>  

        public void ZipFile

            (

            string topDirName,  //顶层文件夹名称 \Storage Card\PDADataExchange\send\xml\

            string[][] fileNamesToZip,  //待压缩文件列表  new string[2]{"version.xml","0")  0 相对 包含文件夹 1 绝对 不包含文件夹

            string zipFileName,   //ZIP文件  \Storage Card\PDADataExchange\send\zip\version.zip

            int CompressionLevel,    //压缩比  7

            string password,    //密码   ""

            string comment   //压缩文件注释文字  ""

            )

        {

            ZipOutputStream zos = new ZipOutputStream(System.IO.File.Open(zipFileName, FileMode.Create));



            if (password != null && password.Length > 0)

                zos.Password = password;



            if (comment != null && comment.Length > 0)

                zos.SetComment(comment);



            zos.SetLevel(CompressionLevel); // 0 - means store only to 9 - means best compression  

            if (fileNamesToZip.Length > 0)

            {

                foreach (string[] file in fileNamesToZip)

                {

                    string filePath = topDirName + file[0];

                    addZipEntry(zos, topDirName, filePath, file[1]);

                }

            }

            else

            {

                string filePath = topDirName;

                addZipEntry(zos, topDirName, filePath, "0");

            }

            zos.Finish();

            zos.Close();

        }



        /// <summary>  

        /// 解压缩ZIP文件到指定文件夹  

        /// </summary>  

        /// <param name="zipfileName">ZIP文件</param>  

        /// <param name="UnZipDir">解压文件夹</param>  

        /// <param name="password">压缩文件密码</param>  

        public void UnZipFile(string zipFileName, string UnZipDir, string password)

        {

            ZipInputStream s = new ZipInputStream(File.OpenRead(zipFileName));

            if (password != null && password.Length > 0)

                s.Password = password;

            try

            {

                ZipEntry theEntry;

                int index = 0;

                while ((theEntry = s.GetNextEntry()) != null)

                {

                    string directoryName = Path.GetDirectoryName(UnZipDir);

                    string pathname = Path.GetDirectoryName(theEntry.Name);

                    string fileName = Path.GetFileName(theEntry.Name);

                    string file = "";

                    try

                    {

                        //生成解压目录   

                        pathname = pathname.Replace(":", "$");//处理压缩时带有盘符的问题  

                        directoryName = directoryName + "\\" + pathname;

                        Directory.CreateDirectory(directoryName);

                        file = directoryName + "\\" + fileName;

                        if (fileName != String.Empty)

                        {

                            //解压文件到指定的目录  

                            FileStream streamWriter = File.Create(directoryName + "\\" + fileName);



                            int size = 2048;

                            byte[] data = new byte[2048];

                            while (true)

                            {

                                size = s.Read(data, 0, data.Length);

                                if (size > 0)

                                {

                                    streamWriter.Write(data, 0, size);

                                }

                                else

                                {

                                    break;

                                }

                            }

                            streamWriter.Close();

                        }

                        if (File.Exists(file))

                        {

                            if (threadStop != null)

                            {

                                if (threadStop != null)

                                {

                                    if (!Path.GetFileName(zipFileName).Equals(Path.GetFileName(file)))

                                    {

                                        threadStop(1, index++, "OK", Path.GetFileName(file));

                                    }

                                }

                            }

                        }

                        

                    }

                    catch

                    {

                        if (File.Exists(file))

                        {

                            if (threadStop != null)

                            {

                                if (threadStop != null)

                                {

                                    if (!Path.GetFileName(zipFileName).Equals(Path.GetFileName(file)))

                                    {

                                        threadStop(1, index++, "Error", Path.GetFileName(file));

                                    }

                                }

                            }

                        }

                    }

                    

                }

                s.Close();

            }

            catch (Exception eu)

            {

                throw eu;

            }

            finally

            {

                s.Close();

            }



        }

    }

}