using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.Mvc;

using System.IO;

using ICSharpCode.SharpZipLib.Zip;

namespace Ext.Net.MVC.Examples

{

public class ZipResult : ActionResult

{

private List<FileInfo> files;

private string fileName;

private string folder;

public ZipResult(List<FileInfo> files, string fileName)

{

this.files = files;

this.fileName = fileName;

}

public ZipResult(string folder, string fileName)

{

this.folder = folder;

this.fileName = fileName;

}

private ZipOutputStream oZipStream;

public override void ExecuteResult(ControllerContext context)

{

var hContext = context.HttpContext;

hContext.Response.ContentType = "application/octet-stream";

hContext.Response.AppendHeader("Connection", "keep-alive");

hContext.Response.AppendHeader("Content-Disposition", string.Concat(" attachment; filename = ", fileName, ".zip"));

FileStream ostream;

byte[] obuffer;

oZipStream = new ZipOutputStream(hContext.Response.OutputStream);

oZipStream.SetLevel(6);

ZipEntry oZipEntry;

if (this.folder != null)

{

int folderOffset = this.folder.Length + (this.folder.EndsWith("\\") ? 0 : 1);

this.CompressFolder(this.folder, folderOffset);

}

else

{

foreach (FileInfo file in this.files)

{

oZipEntry = new ZipEntry(file.Name);

oZipStream.PutNextEntry(oZipEntry);

ostream = File.OpenRead(file.FullName);

obuffer = new byte[ostream.Length];

ostream.Read(obuffer, 0, obuffer.Length);

oZipStream.Write(obuffer, 0, obuffer.Length);

}

}

oZipStream.Finish();

oZipStream.Close();

hContext.Response.End();

}

protected void CompressFolder(string folder, int folderOffset)

{

DirectoryInfo di = new DirectoryInfo(folder);

foreach (DirectoryInfo item in di.GetDirectories())

{

this.CompressFolder(item.FullName, folderOffset);

}

foreach (FileInfo item in di.GetFiles())

{

if (item.Name == "config.xml")

{

continue;

}

FileStream fs = File.OpenRead(item.FullName);

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

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

string entryName = item.FullName.Substring(folderOffset);

entryName = ZipEntry.CleanName(entryName);

ZipEntry entry = new ZipEntry(entryName);

this.oZipStream.PutNextEntry(entry);

this.oZipStream.Write(buffer, 0, buffer.Length);

fs.Close();

}

}

}

}