黃聰：.NET中zip的壓縮和解壓——SharpCompress

     使用Packaging無法實現通用的zip（使用其他工具壓縮）的解壓，只支持通過Packaging壓縮包zip的解壓，而SharpZipLib是基於“GPL”開源方式，風險比較大。在codeplex找到一個更強大的壓縮和解壓開源庫，SharpCompress，和DotNetZip一樣都是“MS-PL”開源方式。

     SharpCompress支持的格式：

Archive Format	Compression Format(s)	Compress/Decompress	Archive API	Reader API	Writer API
Rar	Rar	Decompress(1)	RarArchive	RarReader	N/A
Zip(2)	None, DEFLATE, BZip2, LZMA/LZMA2, PPMd	Both	ZipArchive	ZipReader	ZipWriter
Tar	None, BZip2, GZip	Both	TarArchive	TarReader	TarWriter(3)
GZip (single file)	GZip	Both	GZipArchive	GZipReader	GZipWriter
7Zip(4)	LZMA, LZMA2, BZip2, PPMd, BCJ, BCJ2	Decompress	SevenZipArchive	N/A	N/A

(1) SOLID Rars are only supported in the RarReader API. 
(2) Zip format supports pkware and WinzipAES encryption. However, encrypted LZMA is not supported. 
(3) The Tar format requires a file size in the header. If no size is specified to the TarWriter and the stream is not seekable, then an exception will be thrown. 
(4) The 7Zip format doesn't allow for reading as a forward-only stream so 7Zip is only supported through the Archive API。

    也支持流方式的壓縮和解壓：

Compressor	Compress/Decompress
BZip2Stream	Both
GZipStream	Both
DeflateStream	Both
LZMAStream	Both
PPMdStream	Both

 

 

 

 

 

 

 

 

 

 

 

      使用也比較簡單：

顯示行號 復制代碼 ？解壓Rar文件

1. using (Stream stream = File.OpenRead(@"C:\Code\sharpcompress.rar"))
   {
       var reader = ReaderFactory.Open(stream);
       while (reader.MoveToNextEntry())
       {
           if (!reader.Entry.IsDirectory)
           {
               Console.WriteLine(reader.Entry.FilePath);
               reader.WriteEntryToDirectory(@"C:\temp", ExtractOptions.ExtractFullPath | ExtractOptions.Overwrite);
           }
       }
   }

顯示行號 復制代碼 ？解壓zip文件

1. var archive = ArchiveFactory.Open(@"C:\Code\sharpcompress\TestArchives\sharpcompress.zip");
              foreach (var entry in archive.Entries)
              {
                  if (!entry.IsDirectory)
                  {
                      Console.WriteLine(entry.FilePath);
                      entry.WriteToDirectory(@"C:\temp", ExtractOptions.ExtractFullPath | ExtractOptions.Overwrite);
                  }
              }

顯示行號 復制代碼 ？壓縮成zip文件

1. using (var archive = ZipArchive.Create())
   {
       archive.AddAllFromDirectoryEntry(@"C:\\source");
       archive.SaveTo("@C:\\new.zip");
   }

using (Stream stream = File.OpenWrite(tarPath))

using (var writer = WriterFactory.Open(ArchiveType.Tar, stream))

{

    writer.WriteAll(filesPath, "*", SearchOption.AllDirectories);

}

using (Stream stream = File.OpenWrite(tarbz2Path))

using (var writer = WriterFactory.Open(ArchiveType.BZip2, stream))

{

    writer.Write("Tar.tar", tarPath);

}

 

顯示行號 復制代碼 ？創建Tar文件

1. using (Stream stream = File.OpenWrite(tarPath))
   using (var writer = WriterFactory.Open(ArchiveType.Tar, stream))
   {
       writer.WriteAll(filesPath, "*", SearchOption.AllDirectories);
   }
   using (Stream stream = File.OpenWrite(tarbz2Path))
   using (var writer = WriterFactory.Open(ArchiveType.BZip2, stream))
   {
       writer.Write("Tar.tar", tarPath);
   }