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/// <summary>
/// 解壓壓縮文件到指定目錄
/// <param name="zipFilePath">壓縮文件路徑</param>
/// <summary>
/// <returns></returns>
public void MuliteImport(string zipFilePath)
{
//解壓文件存放路徑
    string unZipDir = string.Format("{0}/{1}/{2}/{3}", Config.GetValue("AnnexesFile"), "Decompress", LoginUserInfo.Get().userId, DateTime.Now.ToString("yyyyMMdd"));
    string FileEextension = Path.GetExtension(zipFilePath);//文件名后綴
//如果解壓目錄不存在則創建
    if (!Directory.Exists(unZipDir))
    {
        Directory.CreateDirectory(unZipDir);
    }
    if (FileEextension.ToLower() == ".zip")
    {
        Decompress(unZipDir, zipFilePath);
    }
    else if (FileEextension.ToLower() == ".rar")
    {
        DeCompressRar(unZipDir, zipFilePath);
    }
}


#region 解壓縮文件
/// <summary>
/// 解壓zip格式的文件（在工程中引用SharpZipLib）
/// </summary>
/// <param name="unZipDir">解壓文件存放路徑</param>
/// <param name="zipFilePath">壓縮文件路徑</param>
/// <returns></returns>
public void Decompress(string unZipDir, string zipFilePath)
{
    unZipDir = unZipDir + "/zip";
    if (!Directory.Exists(unZipDir))
        Directory.CreateDirectory(unZipDir);//生成解壓目錄
    byte[] data = new byte[2048];
    int size = 2048;
//一個ZIP文件中的條目，可以理解為壓縮包里面的一個文件夾/文件
    ZipEntry theEntry = null;
//解壓縮輸出流，從壓縮包中一個接一個的讀出文檔。
    using (ZipInputStream inputStream = new ZipInputStream(File.OpenRead(zipFilePath)))
    {
        while ((theEntry = inputStream.GetNextEntry()) != null)
        {
            if (!string.IsNullOrEmpty(theEntry.Name))
            {
                string fileName = Path.Combine(unZipDir, theEntry.Name);
                fileName = fileName.Replace('/', '\\');


                if (fileName.EndsWith("\\"))
                {
                    Directory.CreateDirectory(fileName);
                    ec_library_catalogueEntity catalogue = new ec_library_catalogueEntity();
                    continue;
                }
                using (FileStream streamWriter = File.Create(fileName))
                {
                    while (true)
                    {
                        size = inputStream.Read(data, 0, data.Length);
                        if (size <= 0) break;
                        streamWriter.Write(data, 0, size);
                    }
                    streamWriter.Close();
                }
            }
        }
        inputStream.Close();
    }
}


/// <summary>
/// 獲取winrar的安裝位置
/// </summary>
/// <returns></returns>
public static string ExistsWinRar()
{
    string result = string.Empty;
    string key = @"SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\WinRAR.exe";
    RegistryKey registryKey = Registry.LocalMachine.OpenSubKey(key);
    if (registryKey != null)
    {
        result = registryKey.GetValue("").ToString();
        registryKey.Close();
    }
    return result;
}


/// <summary>
/// 將格式為rar的壓縮文件解壓到指定的目錄(本機必須安裝winrar解壓軟件)
/// </summary>
/// <param name="unZipDir">解壓后要保存到的目錄</param>
/// <param name="zipFilePath">要解壓rar文件的路徑</param>
/// <returns></returns>
public void DeCompressRar(string unZipDir, string zipFilePath)
{
    var Compressfiles = new List<FileInfo>();
    string winrarPath = ExistsWinRar();
    if (!string.IsNullOrEmpty(winrarPath))
    {
        unZipDir = unZipDir + "/rar";
        if (!Directory.Exists(unZipDir))
            Directory.CreateDirectory(unZipDir);//生成解壓目錄
        string winrarDir = Path.GetDirectoryName(winrarPath);
        string commandOptions = string.Format("x {0} {1} -y", zipFilePath, unZipDir);
        ProcessStartInfo processStartInfo = new ProcessStartInfo();
        processStartInfo.FileName = Path.Combine(winrarDir, "rar.exe");
        processStartInfo.Arguments = commandOptions;
        processStartInfo.WindowStyle = ProcessWindowStyle.Hidden;


        Process process = new Process();
        process.StartInfo = processStartInfo;
        process.StartInfo.UseShellExecute = false;
        process.StartInfo.CreateNoWindow = true;
        process.Start();
        var files = 0;
        while (process.HasExited)
        {
            files++;
        }
        process.WaitForExit();
        process.Close();
        var dir = new DirectoryInfo(unZipDir);
        FindFile(dir, Compressfiles);
    }
    else
    {
//message = "請先安裝winrar程序，再上傳文件";
    }
}


//查找所有文件
public void FindFile(DirectoryInfo di, List<FileInfo> files)
{
    FileInfo[] fis = di.GetFiles();
    files.AddRange(fis);
    DirectoryInfo[] dis = di.GetDirectories();
    for (int j = 0; j < dis.Length; j++)
    {
        FindFile(dis[j], files);
    }
}
#endregion