137 lines
4.9 KiB
C#
137 lines
4.9 KiB
C#
using System;
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using System.Xml;
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using System.IO;
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using System.Collections;
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using System.Text;
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using System.Web;
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using ICSharpCode.SharpZipLib;
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using ICSharpCode.SharpZipLib.Zip.Compression;
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using ICSharpCode.SharpZipLib.GZip;
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using System.Collections.Generic;
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using ICSharpCode.SharpZipLib.Zip;
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using ICSharpCode.SharpZipLib.Checksums;
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namespace Song.Extend
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{
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public class Compress
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{
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/// <summary>
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/// 压缩文件
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/// </summary>
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/// <param name="strFileFolder"></param>
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/// <param name="strZip"></param>
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public static void ZipFile(string strFileFolder, string strZip)
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{
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if (strFileFolder[strFileFolder.Length - 1] != Path.DirectorySeparatorChar)
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strFileFolder += Path.DirectorySeparatorChar;
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ZipOutputStream s = new ZipOutputStream(System.IO.File.Create(strZip));
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s.SetLevel(6); // 0 - store only to 9 - means best compression
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zip(strFileFolder, strZip, s);
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s.Finish();
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s.Close();
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}
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private static void zip(string strFile, string StoreFile, ZipOutputStream s)
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{
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if (strFile[strFile.Length - 1] != Path.DirectorySeparatorChar)
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strFile += Path.DirectorySeparatorChar;
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Crc32 crc = new Crc32();
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string[] filenames = Directory.GetFileSystemEntries(strFile);
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foreach (string file in filenames)
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{
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//如果本目录内有正在被压缩的文件，跳过
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if (file == StoreFile) continue;
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if (Directory.Exists(file))
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{
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zip(file, StoreFile, s);
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}
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else
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{
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//打开压缩文件,开始压缩
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FileStream fs = System.IO.File.OpenRead(file);
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byte[] buffer = new byte[fs.Length];
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fs.Read(buffer, 0, buffer.Length);
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string tempfile = file.Substring(StoreFile.LastIndexOf("\\") + 1);
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ZipEntry entry = new ZipEntry(tempfile);
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entry.DateTime = DateTime.Now;
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entry.Size = fs.Length;
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fs.Close();
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crc.Reset();
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crc.Update(buffer);
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entry.Crc = crc.Value;
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s.PutNextEntry(entry);
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s.Write(buffer, 0, buffer.Length);
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}
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}
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}
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/// <summary>
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/// 解压缩ZIP文件到指定文件夹
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/// </summary>
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/// <param name="zipfileName">ZIP文件</param>
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/// <param name="UnZipDir">解压文件夹</param>
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/// <param name="password">压缩文件密码</param>
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public static void UnZipFile(string zipfileName, string UnZipDir, string password)
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{
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//zipfileName=@"\Storage Card\PDADataExchange\receive\zip\test.zip";
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//UnZipDir= @"\Storage Card\PDADataExchange\receive\xml\";
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//password="";
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ZipInputStream s = new ZipInputStream(System.IO.File.OpenRead(zipfileName));
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if (password != null && password.Length > 0)
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s.Password = password;
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try
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{
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ZipEntry theEntry;
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while ((theEntry = s.GetNextEntry()) != null)
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{
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string directoryName = Path.GetDirectoryName(UnZipDir);
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string pathname = Path.GetDirectoryName(theEntry.Name);
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string fileName = Path.GetFileName(theEntry.Name);
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//生成解压目录
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pathname = pathname.Replace(":", "$");//处理压缩时带有盘符的问题
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directoryName = directoryName + "\\" + pathname;
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Directory.CreateDirectory(directoryName);
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if (fileName != String.Empty)
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{
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//解压文件到指定的目录
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FileStream streamWriter = System.IO.File.Create(directoryName + "\\" + fileName);
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int size = 2048;
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byte[] data = new byte[2048];
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while (true)
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{
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size = s.Read(data, 0, data.Length);
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if (size > 0)
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{
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streamWriter.Write(data, 0, size);
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}
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else
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{
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break;
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}
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}
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streamWriter.Close();
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}
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}
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s.Close();
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}
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catch (Exception eu)
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{
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throw eu;
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}
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finally
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{
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s.Close();
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}
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}
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}
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}
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