压缩文件类的ZipFile

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO.Packaging;
using System.IO;
using Utilities.IO.ExtensionMethods;
using Utilities.DataTypes.ExtensionMethods;

namespace Utilities.FileFormats.Zip
{
/// <summary>
/// Helper class for dealing with zip files
/// </summary>
public class ZipFile : IDisposable
{
#region Constructor

/// <summary>
/// Constructor
/// </summary>
/// <param name="FilePath">Path to the zip file</param>
/// <param name="Overwrite">Should the zip file be overwritten?</param>
public ZipFile(string FilePath, bool Overwrite = true)
{
FilePath.ThrowIfNullOrEmpty("FilePath");
ZipFileStream = new FileStream(FilePath, Overwrite ? FileMode.Create : FileMode.OpenOrCreate);
}

#endregion

#region Properties

/// <summary>
/// Zip file's FileStream
/// </summary>
protected virtual FileStream ZipFileStream { get; set; }

#endregion

#region Functions

/// <summary>
/// Adds a folder to the zip file
/// </summary>
/// <param name="Folder">Folder to add</param>
public virtual void AddFolder(string Folder)
{
Folder.ThrowIfNullOrEmpty("Folder");
Folder = new DirectoryInfo(Folder).FullName;
if (Folder.EndsWith(@"\"))
Folder = Folder.Remove(Folder.Length - 1);
using (Package Package = ZipPackage.Open(ZipFileStream, FileMode.OpenOrCreate))
{
new DirectoryInfo(Folder)
.GetFiles()
.ForEach(x => AddFile(x.FullName.Replace(Folder, ""), x, Package));
}
}

/// <summary>
/// Adds a file to the zip file
/// </summary>
/// <param name="File">File to add</param>
public virtual void AddFile(string File)
{
File.ThrowIfNullOrEmpty("File");
FileInfo TempFileInfo = new FileInfo(File);
if (!TempFileInfo.Exists)
throw new ArgumentException("File");
using (Package Package = ZipPackage.Open(ZipFileStream, FileMode.OpenOrCreate))
{
AddFile(TempFileInfo.Name, TempFileInfo, Package);
}
}

/// <summary>
/// Uncompresses the zip file to the specified folder
/// </summary>
/// <param name="Folder">Folder to uncompress the file in</param>
public virtual void UncompressFile(string Folder)
{
Folder.ThrowIfNullOrEmpty("Folder");
new DirectoryInfo(Folder).Create();
Folder = new DirectoryInfo(Folder).FullName;
using (Package Package = ZipPackage.Open(ZipFileStream, FileMode.Open, FileAccess.Read))
{
foreach (PackageRelationship Relationship in Package.GetRelationshipsByType("http://schemas.microsoft.com/opc/2006/sample/document"))
{
Uri UriTarget = PackUriHelper.ResolvePartUri(new Uri("/", UriKind.Relative), Relationship.TargetUri);
PackagePart Document = Package.GetPart(UriTarget);
Extract(Document, Folder);
}
if (File.Exists(Folder + @"\[Content_Types].xml"))
File.Delete(Folder + @"\[Content_Types].xml");
}
}

/// <summary>
/// Extracts an individual file
/// </summary>
/// <param name="Document">Document to extract</param>
/// <param name="Folder">Folder to extract it into</param>
protected virtual void Extract(PackagePart Document, string Folder)
{
Folder.ThrowIfNullOrEmpty("Folder");
string Location = Folder + System.Web.HttpUtility.UrlDecode(Document.Uri.ToString()).Replace('\\', '/');
new DirectoryInfo(Path.GetDirectoryName(Location)).Create();
byte[] Data = new byte[1024];
using (FileStream FileStream = new FileStream(Location, FileMode.Create))
{
Stream DocumentStream = Document.GetStream();
while (true)
{
int Size = DocumentStream.Read(Data, 0, 1024);
FileStream.Write(Data, 0, Size);
if (Size != 1024)
break;
}
FileStream.Close();
}
}

/// <summary>
/// Adds a file to the zip file
/// </summary>
/// <param name="File">File to add</param>
/// <param name="FileInfo">File information</param>
/// <param name="Package">Package to add the file to</param>
protected virtual void AddFile(string File, FileInfo FileInfo, Package Package)
{
File.ThrowIfNullOrEmpty("File");
if (!FileInfo.Exists)
throw new ArgumentException("FileInfo");
Uri UriPath = PackUriHelper.CreatePartUri(new Uri(File, UriKind.Relative));
PackagePart PackagePart = Package.CreatePart(UriPath, System.Net.Mime.MediaTypeNames.Text.Xml, CompressionOption.Maximum);
byte[] Data = FileInfo.ReadBinary();
PackagePart.GetStream().Write(Data, 0, Data.Count());
Package.CreateRelationship(PackagePart.Uri, TargetMode.Internal, "http://schemas.microsoft.com/opc/2006/sample/document");
}

#endregion

#region IDisposable Members

public void Dispose()
{
if (ZipFileStream != null)
{
ZipFileStream.Close();
ZipFileStream.Dispose();
ZipFileStream = null;
}
}

#endregion
}
}