各种压缩范例

[1].[文件] SharpZipLib.zip ~ 165KB    下载(110) 跳至 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24]

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[2].[代码] SharpZipLibrary 压缩范例 跳至 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24]

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// SharpZipLibrary samples

// Copyright (c) 2007, AlphaSierraPapa

// All rights reserved.

//

// Redistribution and use in source and binary forms, with or without modification, are

// permitted provided that the following conditions are met:

//

// - Redistributions of source code must retain the above copyright notice, this list

//   of conditions and the following disclaimer.

//

// - Redistributions in binary form must reproduce the above copyright notice, this list

//   of conditions and the following disclaimer in the documentation and/or other materials

//   provided with the distribution.

//

// - Neither the name of the SharpDevelop team nor the names of its contributors may be used to

//   endorse or promote products derived from this software without specific prior written

//   permission.

//

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS &AS IS& AND ANY EXPRESS

// OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY

// AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR

// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER

// IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT

// OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

using System;

using System.Text;

using System.Collections;

using System.IO;

using ICSharpCode.SharpZipLib.Zip;

class MainClass

{

    static public void Main(string[] args)

    {

        if ( args.Length < 1 ) {

            Console.WriteLine("Usage: ZipList file");

            return;

        }

        

        if ( !File.Exists(args[0]) ) {

            Console.WriteLine("Cannot find file");

            return;

        }

        

        using (ZipFile zFile = new ZipFile(args[0])) {

            Console.WriteLine("Listing of : " + zFile.Name);

            Console.WriteLine("");

            Console.WriteLine("Raw Size    Size      Date     Time     Name");

            Console.WriteLine("--------  --------  --------  ------  ---------");

            foreach (ZipEntry e in zFile) {

                DateTime d = e.DateTime;

                Console.WriteLine("{0, -10}{1, -10}{2}  {3}   {4}", e.Size, e.CompressedSize,

                                                                    d.ToString("dd-MM-yy"), d.ToString("HH:mm"),

                                                                    e.Name);

            }

        }

    }

}

[3].[代码] gz和bz2压缩和解压缩 跳至 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24]

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class ZipAndUnzipFile

    {

        public static void GetZipAndUnzipFile(){

            string srcFile = @"..\..\testzip.txt";//准备压缩的文件路径

            string zipFile = @"..\..\testzip";//压缩后的文件路径

            string unzipFile = @"..\..\testzip_unzip.txt";//解压后的文件路径

            Console.WriteLine("使用BZIP开始压缩文件……");

            if (BZipFile(srcFile, zipFile + ".bz"))//使用BZIP压缩文件

            {

                Console.WriteLine("文件压缩完成");

            }

            else

            {

                Console.WriteLine("文件压缩失败");

            }

            Console.WriteLine("使用BZIP开始解压文件……");

            if (UnBzipFile(zipFile + ".bz", unzipFile))//使用BZIP解压文件

            {

                Console.WriteLine("文件解压完成");

            }

            else

            {

                Console.WriteLine("文件解压失败");

            }

            Console.WriteLine("使用GZIP开始压缩文件……");

            if (GZipFile(srcFile, zipFile + ".gz"))//使用GZIP压缩文件

            {

                Console.WriteLine("文件压缩完成");

            }

            else

            {

                Console.WriteLine("文件压缩失败");

            }

            Console.WriteLine("使用GZIP开始解压文件……");

            if (UnGzipFile(zipFile + ".gz", unzipFile))//使用GZIP解压文件

            {

                Console.WriteLine("文件解压完成");

            }

            else

            {

                Console.WriteLine("文件解压失败");

            }

            Console.ReadLine();

        }

    //使用BZIP压缩文件的方法

        static bool BZipFile(string sourcefilename, string zipfilename)

        {

            bool blResult;//表示压缩是否成功的返回结果

            //为源文件创建文件流实例，作为压缩方法的输入流参数

            FileStream srcFile = File.OpenRead(sourcefilename);

            //为压缩文件创建文件流实例，作为压缩方法的输出流参数

            FileStream zipFile = File.Open(zipfilename, FileMode.Create);

            try

            {

                //以4096字节作为一个块的方式压缩文件

                BZip2.Compress(srcFile, zipFile, 4096);

                blResult=true;

            }

            catch (Exception ee)

            {

                Console.WriteLine(ee.Message);

                blResult=false;

            }

            srcFile.Close();//关闭源文件流

            zipFile.Close();//关闭压缩文件流

            return blResult;

        }

        //使用BZIP解压文件的方法

        static bool UnBzipFile(string zipfilename,string unzipfilename)

        {

            bool blResult;//表示解压是否成功的返回结果

            //为压缩文件创建文件流实例，作为解压方法的输入流参数

            FileStream zipFile = File.OpenRead(zipfilename);

            //为目标文件创建文件流实例，作为解压方法的输出流参数

            FileStream destFile = File.Open(unzipfilename, FileMode.Create);

            try

            {

                BZip2.Decompress(zipFile, destFile);//解压文件

                blResult=true;

            }

            catch (Exception ee)

            {

                Console.WriteLine(ee.Message);

                blResult=false;

            }

            destFile.Close();//关闭目标文件流

            zipFile.Close();//关闭压缩文件流

            return blResult;

        }

        //使用GZIP压缩文件的方法

        static bool GZipFile(string sourcefilename, string zipfilename)

        {

            bool blResult;//表示压缩是否成功的返回结果

            //为源文件创建读取文件的流实例

            FileStream srcFile = File.OpenRead(sourcefilename);

            //为压缩文件创建写入文件的流实例，

            GZipOutputStream zipFile = new GZipOutputStream(File.Open(zipfilename,FileMode.Create));

            try

            {

                byte[] FileData = new byte[srcFile.Length];//创建缓冲数据

                srcFile.Read(FileData, 0, (int)srcFile.Length);//读取源文件

                zipFile.Write(FileData, 0, FileData.Length);//写入压缩文件

                blResult = true;

            }

            catch (Exception ee)

            {

                Console.WriteLine(ee.Message);

                blResult = false;

            }

            srcFile.Close();//关闭源文件

            zipFile.Close();//关闭压缩文件

            return blResult;

        }

        //使用GZIP解压文件的方法

        static bool UnGzipFile(string zipfilename, string unzipfilename)

        {

            bool blResult;//表示解压是否成功的返回结果

            //创建压缩文件的输入流实例

            GZipInputStream zipFile = new GZipInputStream(File.OpenRead(zipfilename));

            //创建目标文件的流

            FileStream destFile = File.Open(unzipfilename, FileMode.Create);

            try

            {

                int buffersize = 2048;//缓冲区的尺寸，一般是2048的倍数

                byte[] FileData = new byte[buffersize];//创建缓冲数据

                while(buffersize>0)//一直读取到文件末尾

                {

                    buffersize = zipFile.Read(FileData,0,buffersize);//读取压缩文件数据

                    destFile.Write(FileData,0,buffersize);//写入目标文件

                }

                blResult = true;

            }

            catch(Exception ee)

            {

                Console.WriteLine(ee.Message);

                blResult = false;

            }

            destFile.Close();//关闭目标文件

            zipFile.Close();//关闭压缩文件

            return blResult;

        }

    }

[4].[代码] BZip2 跳至 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24]

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using   System;  

using   System.IO;  

using   ICSharpCode.SharpZipLib.BZip2;  

class   MainClass  

{  

      public   static   void   Main(string[]   args)  

      {  

            if   (args[0]   ==   "-d ")   {   //   解压  

                  BZip2.Decompress(File.OpenRead(args[1]),   File.Create(Path.GetFileNameWithoutExtension(args[1])),true);  

            }   else   {   //压缩  

                  BZip2.Compress(File.OpenRead(args[0]),   File.Create(args[0]   +   ".bz "),true,   4096);  

            }  

      }  

}

[5].[代码] GZip 跳至 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24]

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using   System;  

using   System.IO;  

using   ICSharpCode.SharpZipLib.GZip;  

class   MainClass  

{  

      public   static   void   Main(string[]   args)  

      {  

            if   (args[0]   ==   "-d ")   {   //   解压  

                  Stream   s   =   new   GZipInputStream(File.OpenRead(args[1]));  

                  //生成一个GZipInputStream流，用来打开压缩文件。  

                //因为GZipInputStream由Stream派生，所以它可以赋给Stream。  

                    //它的构造函数的参数是一个表示要解压的压缩文件所代表的文件流  

                  FileStream   fs   =   File.Create(Path.GetFileNameWithoutExtension(args[1]));  

                  //生成一个文件流，它用来生成解压文件  

                  //可以使用System.IO.File的静态函数Create来生成文件流  

                  int   size   =   2048;//指定压缩块的大小，一般为2048的倍数  

                  byte[]   writeData   =   new   byte[size];//指定缓冲区的大小  

                  while   (true)   {  

                        size   =   s.Read(writeData,   0,   size);//读入一个压缩块  

                        if   (size   >   0)   {  

                              fs.Write(writeData,   0,   size);//写入解压文件代表的文件流  

                        }   else   {  

                              break;//若读到压缩文件尾，则结束  

                        }  

                  }  

                  s.Close();  

            }   else   {   //   压缩  

                  Stream   s   =   new   GZipOutputStream(File.Create(args[0]   +   ".gz "));  

                  //生成一个GZipOutputStream流，用来生成压缩文件。  

                                                //因为GZipOutputStream由Stream派生，所以它可以赋给Stream。  

                    FileStream   fs   =   File.OpenRead(args[0]);  

                  /生成一个文件流，它用来打开要压缩的文件  

                  //可以使用System.IO.File的静态函数OpenRead来生成文件流  

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

                  //指定缓冲区的大小  

                  fs.Read(writeData,   0,   (int)fs.Length);  

                  //读入文件  

                  s.Write(writeData,   0,   writeData.Length);  

                  //写入压缩文件  

                  s.Close();  

                  //关闭文件  

            }  

}

[6].[代码] bz2转gz 跳至 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24]

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string bz2name = @"C:\t.tar.bz2";

BZip2.Decompress(File.OpenRead(bz2name), new GZipOutputStream(File.Create(Path.GetFileNameWithoutExtension(bz2name) + ".gz")), true);

[7].[代码] gz转bz2 跳至 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24]

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string gzname = @"C:\test.tar.gz";

BZip2.Compress(new GZipInputStream(File.OpenRead(gzname)), File.Create(Path.GetFileNameWithoutExtension(gzname) + ".bz2"), true, 5);

[8].[代码] Extract the file within a GZip 跳至 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24]

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using System;

using System.IO;

using ICSharpCode.SharpZipLib.Core;

using ICSharpCode.SharpZipLib.GZip;

// Extracts the file contained within a GZip to the target dir.

// A GZip can contain only one file, which by default is named the same as the GZip except

// without the extension.

//

public void ExtractGZipSample(string gzipFileName, string targetDir) {

    byte[ ] dataBuffer = new byte[4096];

    using (System.IO.Stream fs = new FileStream(gzipFileName, FileMode.Open, FileAccess.Read)) {

        using (GZipInputStream gzipStream = new GZipInputStream(fs)) {

            // Change this to your needs

            string fnOut = Path.Combine(targetDir, Path.GetFileNameWithoutExtension(gzipFileName));

            using (FileStream fsOut = File.Create(fnOut)) {

                StreamUtils.Copy(gzipStream, fsOut, dataBuffer);

            }

        }

    }

}

[9].[代码] Simple full extract from a Tar 跳至 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24]

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using System;

using System.IO;

using ICSharpCode.SharpZipLib.Tar;

public void ExtractTar(String tarFileName, String destFolder) {

    Stream inStream = File.OpenRead(tarFileName);

    TarArchive tarArchive = TarArchive.CreateInputTarArchive(inStream);

    tarArchive.ExtractContents(destFolder);

    tarArchive.Close();

    inStream.Close();

}

[10].[代码] 解压TGZ文件 (.tar.gz) 跳至 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24]

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using ICSharpCode.SharpZipLib.GZip;

using ICSharpCode.SharpZipLib.Tar;

// example: ExtractTGZ(@"c:\temp\test.tar.gz", @"C:\DestinationFolder")

public void ExtractTGZ(String gzArchiveName, String destFolder) {

    Stream inStream = File.OpenRead(gzArchiveName);

    Stream gzipStream = new GZipInputStream(inStream);

    TarArchive tarArchive = TarArchive.CreateInputTarArchive(gzipStream);

    tarArchive.ExtractContents(destFolder);

    tarArchive.Close();

    gzipStream.Close();

    inStream.Close();

}

[11].[代码] Extract from a Tar with full control 跳至 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24]

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using System;

using System.IO;

using ICSharpCode.SharpZipLib.Tar;

// Iterates through each file entry within the supplied tar,

// extracting them to the nominated folder.

//

public void ExtractTarByEntry(string tarFileName, string targetDir, bool asciiTranslate) {

    using (FileStream fsIn = new FileStream(tarFileName, FileMode.Open, FileAccess.Read)) {

        TarInputStream tarIn = new TarInputStream(fsIn);

        TarEntry tarEntry;

        while ((tarEntry = tarIn.GetNextEntry()) != null) {

            if (tarEntry.IsDirectory) {

                continue;

            }

            // Converts the unix forward slashes in the filenames to windows backslashes

            //

            string name = tarEntry.Name.Replace(‘/‘, Path.DirectorySeparatorChar);

            // Remove any root e.g. ‘\‘ because a PathRooted filename defeats Path.Combine

            if (Path.IsPathRooted(name)) {

                name = name.Substring(Path.GetPathRoot(name).Length);

            }

            // Apply further name transformations here as necessary

            string outName = Path.Combine(targetDir, name);

            string directoryName = Path.GetDirectoryName(outName);

            Directory.CreateDirectory(directoryName);       // Does nothing if directory exists

            FileStream outStr = new FileStream(outName, FileMode.Create);

            if (asciiTranslate) {

                CopyWithAsciiTranslate(tarIn, outStr);

            }

            else {

                tarIn.CopyEntryContents(outStr);

            }

            outStr.Close();

        }

        tarIn.Close();

    }

}

private void CopyWithAsciiTranslate(TarInputStream tarIn, Stream outStream) {

    byte[ ] buffer = new byte[4096];

    bool asciiKnown = false;

    bool isAscii = true;

    bool cr = false;

    while (true) {

        int numRead = tarIn.Read(buffer, 0, buffer.Length);

        if (numRead <= 0) {

            break;

        }

        if (!asciiKnown) {

            int maxCheck = Math.Min(200, numRead);

            for (int i = 0; i < maxCheck; i++) {

                byte b = buffer[i];

                if (b < 8 || (b > 13 && b < 32) || b == 255) {

                    isAscii = false;

                    asciiKnown = true;

                    break;

                }

            }

        }

        if (isAscii) {

            // Convert LF without CR to CRLF. Handle CRLF split over buffers.

            for (int i = 0; i < numRead; i++) {

                byte b = buffer[i]; // assuming plain Ascii and not UTF-16

                switch (b) {

                    case 13:    // CR

                        cr = true;

                        break;

                    case 10:    // LF

                        if (!cr)

                            outStream.WriteByte(13);

                        else

                            cr = false;

                        break;

                    default:

                        cr = false;

                        break;

                }

                outStream.WriteByte(b);

            }

        }

        else {

            outStream.Write(buffer, 0, numRead);

        }

    }

}

[12].[代码] Create a TGZ (.tar.gz) 跳至 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24]

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using System;

using System.IO;

using ICSharpCode.SharpZipLib.GZip;

using ICSharpCode.SharpZipLib.Tar;

// Calling example

    CreateTarGZ(@"c:\temp\gzip-test.tar.gz", @"c:\data");

private void CreateTarGZ(string tgzFilename, string sourceDirectory) {

    Stream outStream = File.Create(tgzFilename);

    Stream gzoStream = new GZipOutputStream(outStream);

    TarArchive tarArchive = TarArchive.CreateOutputTarArchive(gzoStream);

    // Note that the RootPath is currently case sensitive and must be forward slashes e.g. "c:/temp"

    // and must not end with a slash, otherwise cuts off first char of filename

    // This is scheduled for fix in next release

    tarArchive.RootPath = sourceDirectory.Replace(‘\\‘, ‘/‘);

    if (tarArchive.RootPath.EndsWith("/"))

        tarArchive.RootPath = tarArchive.RootPath.Remove(tarArchive.RootPath.Length - 1);

    AddDirectoryFilesToTar(tarArchive, sourceDirectory, true);

    tarArchive.Close();

}

private void AddDirectoryFilesToTar(TarArchive tarArchive, string sourceDirectory, bool recurse) {

    // Optionally, write an entry for the directory itself.

    // Specify false for recursion here if we will add the directory‘s files individually.

    //

    TarEntry tarEntry = TarEntry.CreateEntryFromFile(sourceDirectory);

    tarArchive.WriteEntry(tarEntry, false);

    // Write each file to the tar.

    //

    string[] filenames = Directory.GetFiles(sourceDirectory);

    foreach (string filename in filenames) {

        tarEntry = TarEntry.CreateEntryFromFile(filename);

        tarArchive.WriteEntry(tarEntry, true);

    }

    if (recurse) {

        string[] directories = Directory.GetDirectories(sourceDirectory);

        foreach (string directory in directories)

            AddDirectoryFilesToTar(tarArchive, directory, recurse);

    }

}

[13].[代码] Create a TAR or TGZ with control over filenames and data source 跳至 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24]

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using System;

using System.IO;

using ICSharpCode.SharpZipLib.Tar;

public void TarCreateFromStream() {

    // Create an output stream. Does not have to be disk, could be MemoryStream etc.

    string tarOutFn = @"c:\temp\test.tar";

    Stream outStream = File.Create(tarOutFn);

    // If you wish to create a .Tar.GZ (.tgz):

    // - set the filename above to a ".tar.gz",

    // - create a GZipOutputStream here

    // - change "new TarOutputStream(outStream)" to "new TarOutputStream(gzoStream)"

    // Stream gzoStream = new GZipOutputStream(outStream);

    // gzoStream.SetLevel(3); // 1 - 9, 1 is best speed, 9 is best compression

    TarOutputStream tarOutputStream = new TarOutputStream(outStream);

    CreateTarManually(tarOutputStream, @"c:\temp\debug");

    // Closing the archive also closes the underlying stream.

    // If you don‘t want this (e.g. writing to memorystream), set tarOutputStream.IsStreamOwner = false

    tarOutputStream.Close();

}

private void CreateTarManually(TarOutputStream tarOutputStream, string sourceDirectory) {

    // Optionally, write an entry for the directory itself.

    //

    TarEntry tarEntry = TarEntry.CreateEntryFromFile(sourceDirectory);

    tarOutputStream.PutNextEntry(tarEntry);

    // Write each file to the tar.

    //

    string[] filenames = Directory.GetFiles(sourceDirectory);

    foreach (string filename in filenames) {

        // You might replace these 3 lines with your own stream code

        using (Stream inputStream = File.OpenRead(filename)) {

            string tarName = filename.Substring(3); // strip off "C:\"

            long fileSize = inputStream.Length;

            // Create a tar entry named as appropriate. You can set the name to anything,

            // but avoid names starting with drive or UNC.

            TarEntry entry = TarEntry.CreateTarEntry(tarName);

            // Must set size, otherwise TarOutputStream will fail when output exceeds.

            entry.Size = fileSize;

            // Add the entry to the tar stream, before writing the data.

            tarOutputStream.PutNextEntry(entry);

            // this is copied from TarArchive.WriteEntryCore

            byte[] localBuffer = new byte[32 * 1024];

            while (true) {

                int numRead = inputStream.Read(localBuffer, 0, localBuffer.Length);

                if (numRead <= 0) {

                    break;

                }

                tarOutputStream.Write(localBuffer, 0, numRead);

            }

        }

        tarOutputStream.CloseEntry();

    }

    // Recurse. Delete this if unwanted.

    string[] directories = Directory.GetDirectories(sourceDirectory);

    foreach (string directory in directories) {

        CreateTarManually(tarOutputStream, directory);

    }

}

[14].[代码] Basic updating of a zip file 跳至 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24]

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using ICSharpCode.SharpZipLib.Zip;

public void UpdateExistingZip() {

    ZipFile zipFile = new ZipFile(@"c:\temp\existing.zip");

    // Must call BeginUpdate to start, and CommitUpdate at the end.

    zipFile.BeginUpdate();

    zipFile.Password = "whatever"; // Only if a password is wanted on the new entry

    // The "Add()" method will add or overwrite as necessary.

    // When the optional entryName parameter is omitted, the entry will be named

    // with the full folder path and without the drive e.g. "temp/folder/test1.txt".

    //

    zipFile.Add(@"c:\temp\folder\test1.txt");

    // Specify the entryName parameter to modify the name as it appears in the zip.

    //

    zipFile.Add(@"c:\temp\folder\test2.txt", "test2.txt");

    // Continue calling .Add until finished.

    // Both CommitUpdate and Close must be called.

    zipFile.CommitUpdate();

    zipFile.Close();

}

[15].[代码] Updating a zip file in memory 跳至 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24]

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using System;

using System.IO;

using ICSharpCode.SharpZipLib.Zip;

/// <summary>

/// Updates a zip file (in a disk or memorystream) adding the entry contained in the second stream.

/// </summary>

/// <param name="zipStream">Zip file, could be a disk or memory stream. Must be seekable. </param>

/// <param name="entryStream">Stream containing a file to be added. </param>

/// <param name="entryName">Name to appear in the zip entry. </param>

///

public void UpdateZipInMemory(Stream zipStream, Stream entryStream, String entryName) {

    // The zipStream is expected to contain the complete zipfile to be updated

    ZipFile zipFile = new ZipFile(zipStream);

    zipFile.BeginUpdate();

    // To use the entryStream as a file to be added to the zip,

    // we need to put it into an implementation of IStaticDataSource.

    CustomStaticDataSource sds = new CustomStaticDataSource();

    sds.SetStream(entryStream);

    // If an entry of the same name already exists, it will be overwritten; otherwise added.

    zipFile.Add(sds, entryName);

    // Both CommitUpdate and Close must be called.

    zipFile.CommitUpdate();

    // Set this so that Close does not close the memorystream

    zipFile.IsStreamOwner = false;

    zipFile.Close();

    // Reposition to the start for the convenience of the caller.

    zipStream.Position = 0;

}

public class CustomStaticDataSource : IStaticDataSource {

    private Stream _stream;

    // Implement method from IStaticDataSource

    public Stream GetSource() {

        return _stream;

    }

    // Call this to provide the memorystream

    public void SetStream(Stream inputStream) {

        _stream = inputStream;

        _stream.Position = 0;

    }

}

// This test harness CallingExample method illustrates the use of the UpdateZipInMemory method above.

// In this example, we copy a zip file from disk into a memorystream, update it, and write the memorystream back to

// a (different) disk file. Note that the UpdateZipInMemory method parameters are Stream - any stream will do,

// it does not have to be a memorystream. The zipStream must be seekable, but the entryStream need not.

//

public void CallingExample() {

    // Read a disk file into memory

    MemoryStream msZip = new MemoryStream();

    FileStream fs = File.OpenRead(@"c:\temp\existing.zip");

    // This utility method copies from stream to stream.

    // Using StreamUtils.Copy is more efficient than copying whole file into am intermediate byte array.

    byte[] buffer = new byte[4096];

    ICSharpCode.SharpZipLib.Core.StreamUtils.Copy(fs, msZip, buffer);

    fs.Close();

    // Create an entry to be added.

    FileStream fsEntry = File.OpenRead(@"c:\temp\test1.txt");

    MemoryStream msEntry = new MemoryStream();

    ICSharpCode.SharpZipLib.Core.StreamUtils.Copy(fsEntry, msEntry, buffer);

    fsEntry.Close();

    // Do the update

    UpdateZipInMemory(msZip, msEntry, "test1updated.txt");

    // At this point, msZip contains the updated zip. We will write it to a new file.

    fs = File.Create(@"c:\temp\updated.zip");

    ICSharpCode.SharpZipLib.Core.StreamUtils.Copy(msZip, fs, new byte[4096]);

    fs.Close();

}

[16].[代码] How to create a Zip File 跳至 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24]

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FastZip fastZip = new FastZip();

bool recurse = true;  // Include all files by recursing through the directory structure

string filter = null; // Dont filter any files at all

fastZip.CreateZip("fileName.zip", @"C:\SourceDirectory", recurse, filter);

[17].[代码] Create a zip with FastZip using progress events 跳至 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24]

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using System;

using System.IO;

using ICSharpCode.SharpZipLib.Core;

using ICSharpCode.SharpZipLib.Zip;

private int _uptoFileCount;

private int _totalFileCount;

public void TestFastZipCreate(string backupFolderPath) {

    _totalFileCount = FolderContentsCount(backupFolderPath);

    FastZipEvents events = new FastZipEvents();

    events.ProcessFile = ProcessFileMethod;

    FastZip fastZip = new FastZip(events);

    fastZip.CreateEmptyDirectories = true;

    string zipFileName = Directory.GetParent(backupFolderPath).FullName + "\\ZipTest.zip";

    fastZip.CreateZip(zipFileName, backupFolderPath, true, "");

}

private void ProcessFileMethod(object sender, ScanEventArgs args) {

    _uptoFileCount ++;

    int percentCompleted = _uptoFileCount * 100 / _totalFileCount;

    // do something here with a progress bar

    // file counts are easier as sizes take more work to calculate, and compression levels vary by file type

    string fileName = args.Name;

    // To terminate the process, set args.ContinueRunning = false

    if (fileName == "stop on this file")

        args.ContinueRunning = false;

}

// Returns the number of files in this and all subdirectories

private int FolderContentsCount(string path) {

    int result = Directory.GetFiles(path).Length;

    string[ ] subFolders = Directory.GetDirectories(path);

    foreach (string subFolder in subFolders) {

        result += FolderContentsCount(subFolder);

    }

    return result;

}

[18].[代码] How to extract a Zip File using FastZip 跳至 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24]

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C#

using System;

using ICSharpCode.SharpZipLib.Zip;

public void TestFastZipUnpack(string zipFileName, string targetDir) {

    FastZip fastZip = new FastZip();

    string fileFilter = null;

    // Will always overwrite if target filenames already exist

    fastZip.ExtractZip(zipFileName, targetDir, fileFilter);

}

[19].[代码] Extract a Zip File with Name Filter and Confirm Overwrite 跳至 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24]

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using System;

using System.Windows.Forms;

using ICSharpCode.SharpZipLib.Core;

using ICSharpCode.SharpZipLib.Zip;

private bool _stop;

public void TestFastZipUnpack(string zipFileName, string targetDir) {

    // Set the method that will be called on each file before extraction but after the OverwritePrompt (if applicable)

    FastZipEvents events = new FastZipEvents();

    events.ProcessFile = ProcessFileMethod;

    FastZip fastZip = new FastZip(events);

    // To conditionally extract files in FastZip, use the fileFilter and directoryFilter arguments.

    // The filter is a list of regex values separated with semi-colon. An entry starting with - is an exclusion.

    // See the NameFilter class for more details.

    // The following expression includes all name ending in ‘.dat‘ with the exception of ‘dummy.dat‘

    string fileFilter = @"+\.dat$;-^dummy\.dat$";

    string directoryFilter = null;

    bool restoreDateTime = true;

    // Will prompt to overwrite if target filenames already exist

    fastZip.ExtractZip(zipFileName, targetDir, FastZip.Overwrite.Prompt, OverwritePrompt,

                fileFilter, directoryFilter, restoreDateTime);

}

private bool OverwritePrompt(string fileName) {

    // In this method you can choose whether to overwrite a file.

    DialogResult dr = MessageBox.Show("Overwrite " + fileName, "Overwrite?", MessageBoxButtons.YesNoCancel);

    if (dr == DialogResult.Cancel) {

        _stop = true;

        // Must return true if we want to abort processing, so that the ProcessFileMethod will be called.

        // When the ProcessFileMethod sets ContinueRunning false, processing will immediately stop.

        return true;

    }

    return dr == DialogResult.Yes;

}

private void ProcessFileMethod(object sender, ScanEventArgs args) {

    string fileName = args.Name;

    // To stop all further processing, set args.ContinueRunning = false

    if (_stop) {

        args.ContinueRunning = false;

    }

}

[20].[代码] zip压缩解压类 跳至 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24]

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/// <summary>

/// Zip压缩与解压缩

/// </summary>

public class ZipHelper

{

    /// <summary>

    /// 压缩单个文件

    /// </summary>

    /// <param name="fileToZip">要压缩的文件</param>

    /// <param name="zipedFile">压缩后的文件</param>

    /// <param name="compressionLevel">压缩等级</param>

    /// <param name="blockSize">每次写入大小</param>

    public static void ZipFile(string fileToZip, string zipedFile, int compressionLevel, int blockSize)

    {

        //如果文件没有找到，则报错

        if (!System.IO.File.Exists(fileToZip))

        {

            throw new System.IO.FileNotFoundException("指定要压缩的文件: " + fileToZip + " 不存在!");

        }

 

        using (System.IO.FileStream ZipFile = System.IO.File.Create(zipedFile))

        {

            using (ZipOutputStream ZipStream = new ZipOutputStream(ZipFile))

            {

                using (System.IO.FileStream StreamToZip = new System.IO.FileStream(fileToZip, System.IO.FileMode.Open, System.IO.FileAccess.Read))

                {

                    string fileName = fileToZip.Substring(fileToZip.LastIndexOf("\\") + 1);

 

                    ZipEntry ZipEntry = new ZipEntry(fileName);

 

                    ZipStream.PutNextEntry(ZipEntry);

 

                    ZipStream.SetLevel(compressionLevel);

 

                    byte[] buffer = new byte[blockSize];

 

                    int sizeRead = 0;

 

                    try

                    {

                        do

                        {

                            sizeRead = StreamToZip.Read(buffer, 0, buffer.Length);

                            ZipStream.Write(buffer, 0, sizeRead);

                        }

                        while (sizeRead > 0);

                    }

                    catch (System.Exception ex)

                    {

                        throw ex;

                    }

 

                    StreamToZip.Close();

                }

 

                ZipStream.Finish();

                ZipStream.Close();

            }

 

            ZipFile.Close();

        }

    }

 

    /// <summary>

    /// 压缩单个文件

    /// </summary>

    /// <param name="fileToZip">要进行压缩的文件名</param>

    /// <param name="zipedFile">压缩后生成的压缩文件名</param>

    public static void ZipFile(string fileToZip, string zipedFile)

    {

        //如果文件没有找到，则报错

        if (!File.Exists(fileToZip))

        {

            throw new System.IO.FileNotFoundException("指定要压缩的文件: " + fileToZip + " 不存在!");

        }

 

        using (FileStream fs = File.OpenRead(fileToZip))

        {

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

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

            fs.Close();

 

            using (FileStream ZipFile = File.Create(zipedFile))

            {

                using (ZipOutputStream ZipStream = new ZipOutputStream(ZipFile))

                {

                    string fileName = fileToZip.Substring(fileToZip.LastIndexOf("\\") + 1);

                    ZipEntry ZipEntry = new ZipEntry(fileName);

                    ZipStream.PutNextEntry(ZipEntry);

                    ZipStream.SetLevel(5);

 

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

                    ZipStream.Finish();

                    ZipStream.Close();

                }

            }

        }

    }

 

    /// <summary>

    /// 压缩多层目录

    /// </summary>

    /// <param name="strDirectory">The directory.</param>

    /// <param name="zipedFile">The ziped file.</param>

    public static void ZipFileDirectory(string strDirectory, string zipedFile)

    {

        using (System.IO.FileStream ZipFile = System.IO.File.Create(zipedFile))

        {

            using (ZipOutputStream s = new ZipOutputStream(ZipFile))

            {

                ZipSetp(strDirectory, s, "");

            }

        }

    }

 

    /// <summary>

    /// 递归遍历目录

    /// </summary>

    /// <param name="strDirectory">The directory.</param>

    /// <param name="s">The ZipOutputStream Object.</param>

    /// <param name="parentPath">The parent path.</param>

    private static void ZipSetp(string strDirectory, ZipOutputStream s, string parentPath)

    {

        if (strDirectory[strDirectory.Length - 1] != Path.DirectorySeparatorChar)

        {

            strDirectory += Path.DirectorySeparatorChar;

        }          

        Crc32 crc = new Crc32();

 

        string[] filenames = Directory.GetFileSystemEntries(strDirectory);

 

        foreach (string file in filenames)// 遍历所有的文件和目录

        {

 

            if (Directory.Exists(file))// 先当作目录处理如果存在这个目录就递归Copy该目录下面的文件

            {

                string pPath = parentPath;

                pPath += file.Substring(file.LastIndexOf("\\") + 1);

                pPath += "\\";

                ZipSetp(file, s, pPath);

            }

 

            else // 否则直接压缩文件

            {

                //打开压缩文件

                using (FileStream fs = File.OpenRead(file))

                {

 

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

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

 

                    string fileName = parentPath + file.Substring(file.LastIndexOf("\\") + 1);

                    ZipEntry entry = new ZipEntry(fileName);

 

                    entry.DateTime = DateTime.Now;

                    entry.Size = fs.Length;

 

                    fs.Close();

 

                    crc.Reset();

                    crc.Update(buffer);

 

                    entry.Crc = crc.Value;

                    s.PutNextEntry(entry);

 

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

                }

            }

        }

    }

 

    /// <summary>

    /// 解压缩一个 zip 文件。

    /// </summary>

    /// <param name="zipedFile">The ziped file.</param>

    /// <param name="strDirectory">The STR directory.</param>

    /// <param name="password">zip 文件的密码。</param>

    /// <param name="overWrite">是否覆盖已存在的文件。</param>

    public void UnZip(string zipedFile, string strDirectory, string password, bool overWrite)

    {

 

        if (strDirectory == "")

            strDirectory = Directory.GetCurrentDirectory();

        if (!strDirectory.EndsWith("\\"))

            strDirectory = strDirectory + "\\";

 

        using (ZipInputStream s = new ZipInputStream(File.OpenRead(zipedFile)))

        {

            s.Password = password;

            ZipEntry theEntry;

 

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

            {

                string directoryName = "";

                string pathToZip = "";

                pathToZip = theEntry.Name;

 

                if (pathToZip != "")

                    directoryName = Path.GetDirectoryName(pathToZip) + "\\";

 

                string fileName = Path.GetFileName(pathToZip);

 

                Directory.CreateDirectory(strDirectory + directoryName);

 

                if (fileName != "")

                {

                    if ((File.Exists(strDirectory + directoryName + fileName) && overWrite) || (!File.Exists(strDirectory + directoryName + fileName)))

                    {

                        using (FileStream streamWriter = File.Create(strDirectory + 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();

                        }

                    }

                }

            }

 

            s.Close();

        }

    }

 

}

[21].[代码] Creating a Gzip Stream from multiple streams 跳至 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24]

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public static MemoryStream CreateGzipStream(Dictionary<string, MemoryStream> DicEntryName_Stream)

       {

           int count = 0;

           //Uncomment following line if you want to save to a file

           //Stream outputFileStream = File.Create("TGZ_Output.tgz");

           MemoryStream outputMemStream = new MemoryStream();

           GZipOutputStream gzoStream = new GZipOutputStream(outputMemStream);

           ICSharpCode.SharpZipLib.Tar.TarOutputStream TarStream = new TarOutputStream(gzoStream);

           foreach (KeyValuePair<string, MemoryStream> custKeyVal in DicEntryName_Stream)

           {

               TarEntry newEntry = TarEntry.CreateTarEntry(custKeyVal.Key);

               newEntry.Size = custKeyVal.Value.Length;

               TarStream.PutNextEntry(newEntry);

               StreamUtils.Copy(custKeyVal.Value, TarStream, new byte[4096]);

               TarStream.CloseEntry();

               count++;

           }

           TarStream.IsStreamOwner = false;    // False stops the Close also Closing the underlying stream.

           TarStream.Close();            // Must finish the ZipOutputStream before using outputMemStream.

           gzoStream.Close();

           return outputMemStream;

       }

[22].[代码] Streaming a zip file over http in .net with SharpZipLib 跳至 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24]

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public void ProcessRequest(HttpContext context)

{

    List<string> fileNames = GetFileNames();

    context.Response.ContentType = "application/x-zip-compressed";

    context.Response.AppendHeader("content-disposition", "attachment; filename=files.zip");

    context.Response.ContentEncoding = Encoding.Default;

    context.Response.Charset = "";

    byte[] buffer = new byte[1024 * 8];

    using (ICSharpCode.SharpZipLib.Zip.ZipOutputStream zipOutput = new ICSharpCode.SharpZipLib.Zip.ZipOutputStream(context.Response.OutputStream))

    {

        foreach (string fileName in fileNames)

        {

            ICSharpCode.SharpZipLib.Zip.ZipEntry zipEntry = new ICSharpCode.SharpZipLib.Zip.ZipEntry(fileName);

            zipOutput.PutNextEntry(zipEntry);

            using (var fread = System.IO.File.OpenRead(fileName))

            {

                ICSharpCode.SharpZipLib.Core.StreamUtils.Copy(fread, zipOutput, buffer);

            }

        }

        zipOutput.Finish();

    }

    context.Response.Flush();

    context.Response.End();

}

[23].[代码] Use a memory stream when creating the Zip stream! 跳至 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24]

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MemoryStream outputMemStream = new MemoryStream();

   using (ZipOutputStream zipOutput = new ZipOutputStream(outputMemStream)) {

   // Use zipOutput stream as normal

   ...

[24].[代码] Extract Tar 跳至 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24]

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public IEnumerable<string> ExtractTar(Stream archiveStream)

{

    var archive = TarArchive.CreateInputTarArchive(archiveStream);

    var tarStream = new TarInputStream(archiveStream);

    var tarEntry = tarStream.GetNextEntry();

    while (tarEntry != null)

    {

        yield return tarEntry.Name;

    }

}

Stream Extract(Stream archiveStream, string type)

{

    Stream sharpZipStream;

    switch (type)

    {

        case "z": sharpZipStream = new InflaterInputStream(archiveStream); break;

        case "gzip": sharpZipStream = new GZipInputStream(archiveStream); break;

        case "bzip2": sharpZipStream = new BZip2InputStream(archiveStream); break;

        case "tar": sharpZipStream = new TarInputStream(archiveStream); break;

        default: sharpZipStream = null; break;

    }

    var streamPipe = new SimpleStreamPipe();

    var dataBuffer = new byte[BufferSize];

    using (archiveStream)

    using (sharpZipStream)

    using (var outStream = streamPipe.GetInput())

    {

        StreamUtils.Copy(sharpZipStream, outStream, dataBuffer);

    }

    return streamPipe.GetOutput();

}
时间： 2024-11-03 22:22:41

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