软讯网络 > 编程语言 > .NET > C#.NET > 利用SharpZipLib实现压缩多个文件或整个目录
【标 题】：利用SharpZipLib实现压缩多个文件或整个目录
【关键字】：
SharpZipLib
【来 源】：http://blog.csdn.net/lmtz/archive/2006/09/08/1195275.aspx
利用SharpZipLib实现压缩多个文件或整个目录
using System;
using System.IO;
using ICSharpCode.SharpZipLib.Zip;
using ICSharpCode.SharpZipLib.Checksums;
namespace CSharpZipDemo
...{
/**//// <summary>
/// Summary description for Utility.
/// </summary>
public class Utility
...{
public const int BUFFER_SIZE = 2048;
CompressLevel#region CompressLevel
// 0 - store only to 9 - means best compression
public enum CompressLevel
...{
Store = 0,
Level1,
Level2,
Level3,
Level4,
Level5,
Level6,
Level7,
Level8,
Best
}
#endregion
Unzip#region Unzip
public static int Unzip(string destFolder, string srcZipFile, string password)
...{
ZipInputStream zipStream = null;
ZipEntry zipEntry = null;
FileStream streamWriter = null;
int count = 0;
try
...{
zipStream = new ZipInputStream(File.OpenRead(srcZipFile));
zipStream.Password = password;
while ((zipEntry = zipStream.GetNextEntry()) != null)
...{
string zipFileDirectory = Path.GetDirectoryName(zipEntry.Name);
string destFileDirectory= Path.Combine(destFolder, zipFileDirectory);
if (!Directory.Exists(destFileDirectory))
...{
Directory.CreateDirectory(destFileDirectory);
}
string fileName = Path.GetFileName(zipEntry.Name);
if (fileName.Length > 0)
...{
string destFilePath = Path.Combine(destFileDirectory, fileName);
streamWriter = File.Create(destFilePath);
int size = BUFFER_SIZE;
byte[] data = new byte[BUFFER_SIZE];
int extractCount = 0;
while (true)
...{
size = zipStream.Read(data, 0, data.Length);
if (size > 0)
...{
streamWriter.Write(data, 0, size);
}
else
...{
break;
}
extractCount += size;
}
streamWriter.Flush();
streamWriter.Close();
count++;
}
}
}
catch
...{
throw;
}
finally
...{
if (zipStream != null)
...{
zipStream.Close();
}
if (streamWriter != null)
...{
streamWriter.Close();
}
}
return count;
}
#endregion
Zip folder#region Zip folder
public static int Zip(string destFolder, string srcFolder, string password, CompressLevel level)
...{
ZipOutputStream zipStream = null;
FileStream streamWriter = null;
int count = 0;
try
...{
//Use Crc32
Crc32 crc32 = new Crc32();
//Create Zip File
zipStream = new ZipOutputStream(File.Create(destFolder));
//Specify Level
zipStream.SetLevel(Convert.ToInt32(level));
//Specify Password
if (password != null && password.Trim().Length > 0)
...{
zipStream.Password = password;
}
count = PutDirectoryToZipStream(srcFolder, null, zipStream, crc32, streamWriter);
}
catch
...{
throw;
}
finally
...{
//Clear Resource
if (streamWriter != null)
...{
streamWriter.Close();
}
if (zipStream != null)
...{
zipStream.Finish();
zipStream.Close();
}
}
return count;
}
#endregion
Zip multi files#region Zip multi files
public static int Zip(string destFolder, string[] srcFiles, string folderName, string password, CompressLevel level)
...{
ZipOutputStream zipStream = null;
FileStream streamWriter = null;
int count = 0;
try
...{
//Use Crc32
Crc32 crc32 = new Crc32();
//Create Zip File
zipStream = new ZipOutputStream(File.Create(destFolder));
//Specify Level
zipStream.SetLevel(Convert.ToInt32(level));
//Specify Password
if (password != null && password.Trim().Length > 0)
...{
zipStream.Password = password;
}
//Foreach File
foreach (string file in srcFiles)
...{
//Check Whether the file exists
if (!File.Exists(file))
...{
throw new FileNotFoundException(file);
}
//Read the file to stream
streamWriter = File.OpenRead(file);
byte[] buffer = new byte[streamWriter.Length];
streamWriter.Read(buffer, 0, buffer.Length);
streamWriter.Close();
//Specify ZipEntry
crc32.Reset();
crc32.Update(buffer);
ZipEntry zipEntry = new ZipEntry(Path.Combine(folderName, Path.GetFileName(file)));
zipEntry.DateTime = DateTime.Now;
zipEntry.Size = buffer.Length;
zipEntry.Crc = crc32.Value;
//Put file info into zip stream
zipStream.PutNextEntry(zipEntry);
//Put file data into zip stream
zipStream.Write(buffer, 0, buffer.Length);
count++;
}
}
catch
...{
throw;
}
finally
...{
//Clear Resource
if (streamWriter != null)
...{
streamWriter.Close();
}
if (zipStream != null)
...{
zipStream.Finish();
zipStream.Close();
}
}
return count;
}
#endregion
Common Function#region Common Function
/**//// <summary>
/// Example : Make "C:TestZipFile" To "ZipFile"
/// </summary>
/// <param name="directory">Directory</param>
/// <returns></returns>
private static string GetDirectoryName(string directory)
...{
directory = directory.Replace("/", @"").Replace(@"\", @"");
if (directory[directory.Length - 1].ToString() == @"")
...{
directory = directory.Substring(0, directory.Length - 1);
}
int lastRoot = directory.LastIndexOfAny(@"".ToCharArray());
return directory.Substring(lastRoot + 1, directory.Length - lastRoot - 1);
}
private static int PutDirectoryToZipStream(string directory, string logicBaseDir,
ZipOutputStream zipStream, Crc32 crc32, FileStream streamWriter)
...{
int count = 0;
//Get the logic directory
string logicDir = null;
if (logicBaseDir == null || logicBaseDir.Length == 0)
...{
logicDir = GetDirectoryName(directory);
}
else
...{
logicDir = logicBaseDir + @"" + GetDirectoryName(directory);
}
logicDir = logicDir.Replace("/",