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using System.Linq;
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using System.Text;
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using System.IO;
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using ICSharpCode.SharpZipLib.Zip;
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using System;
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namespace Estsh.Core.Util
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{
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public class ZipHelper
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{
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/// <summary>
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/// 压缩文件和文件夹
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/// </summary>
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/// <param name="FileToZip">待压缩的文件或文件夹，全路径格式</param>
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/// <param name="ZipedFile">压缩后生成的压缩文件名，全路径格式</param>
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/// <param name="Password">压缩文件的密码</param>
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/// <returns></returns>
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public static bool Zip(String FileToZip, String ZipedFile, String Password)
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{
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if (Directory.Exists(FileToZip))
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{
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return ZipFileDictory(FileToZip, ZipedFile, Password);
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}
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else if (File.Exists(FileToZip))
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{
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return ZipFile(FileToZip, ZipedFile, Password);
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}
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else
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{
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return false;
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}
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}
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/// <summary>
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/// 压缩目录
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/// </summary>
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/// <param name="FolderToZip">待压缩的文件夹，全路径格式</param>
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/// <param name="ZipedFile">压缩后的文件名，全路径格式</param>
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/// <param name="Password">压缩文件的密码</param>
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/// <returns></returns>
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private static bool ZipFileDictory(string FolderToZip, string ZipedFile, String Password)
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{
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bool res = true;
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if (!Directory.Exists(FolderToZip))
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{
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return false;
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}
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ZipOutputStream s = new ZipOutputStream(File.Create(ZipedFile));
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s.Password = Password;
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s.SetLevel(6);
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_CompressFolder(FolderToZip, s, FolderToZip);
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s.Finish();
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s.Close();
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return res;
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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="FileToZip">要进行压缩的文件名</param>
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/// <param name="ZipedFile">压缩后生成的压缩文件名</param>
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/// <returns></returns>
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private static bool ZipFile(string FileToZip, string ZipedFile, String Password)
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{
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bool res = true;
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//如果文件没有找到，则报错
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if (!File.Exists(FileToZip))
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{
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throw new System.IO.FileNotFoundException("指定要压缩的文件: " + FileToZip + " 不存在!");
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}
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ZipOutputStream s = new ZipOutputStream(File.Create(ZipedFile));
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s.Password = Password;
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s.SetLevel(6);
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_AddFile(FileToZip, s, FileToZip);
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s.Finish();
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s.Close();
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return res;
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}
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/// <summary>
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/// 压缩单独文件
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/// </summary>
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/// <param name="FileToZip">要进行压缩的文件名</param>
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/// <param name="zips">压缩后文件的输出流</param>
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/// <param name="zipfolername">被压缩目录名称</param>
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private static void _CreateZipFile(string FileToZip, ZipOutputStream zips, string zipfolername)
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{
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FileStream StreamToZip = null;
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ZipEntry ZipEn = null;
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try
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{
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StreamToZip = new FileStream(FileToZip, FileMode.Open, FileAccess.Read);
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FileToZip = FileToZip.Substring(zipfolername.LastIndexOf("\\") + 1);
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ZipEn = new ZipEntry(FileToZip);
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zips.PutNextEntry(ZipEn);
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byte[] buffer = new byte[16384];
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System.Int32 size = StreamToZip.Read(buffer, 0, buffer.Length);
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zips.Write(buffer, 0, size);
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while (size < StreamToZip.Length)
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{
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int sizeRead = StreamToZip.Read(buffer, 0, buffer.Length);
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zips.Write(buffer, 0, sizeRead);
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size += sizeRead;
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}
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}
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catch (Exception e)
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{
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throw e;
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}
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finally
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{
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if (StreamToZip != null)
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{
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StreamToZip.Close();
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StreamToZip = null;
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}
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if (ZipEn != null)
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{
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ZipEn = null;
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}
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}
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}
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/// <summary>
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/// 压缩某个子文件
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/// </summary>
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/// <param name="fileName"></param>
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/// <param name="zips"></param>
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/// <param name="zipfolername"></param>
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private static void _AddFile(string fileName, ZipOutputStream zips, string zipfolername)
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{
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if (File.Exists(fileName))
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{
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_CreateZipFile(fileName, zips, zipfolername);
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}
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}
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/// <summary>
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/// 压缩某个子文件夹
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/// </summary>
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/// <param name="basePath"></param>
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/// <param name="zips"></param>
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/// <param name="zipfolername"></param>
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private static void _CompressFolder(string basePath, ZipOutputStream zips, string zipfolername)
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{
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if (File.Exists(basePath))
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{
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_AddFile(basePath, zips, zipfolername);
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return;
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}
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string[] names = Directory.GetFiles(basePath);
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foreach (string fileName in names)
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{
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_AddFile(fileName, zips, zipfolername);
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}
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names = Directory.GetDirectories(basePath);
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foreach (string folderName in names)
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{
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_CompressFolder(folderName, zips, zipfolername);
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}
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}
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/// <summary>
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/// 解压功能(解压压缩文件到指定目录)
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/// </summary>
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/// <param name="FileToUpZip">待解压的文件</param>
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/// <param name="ZipedFolder">指定解压目标目录</param>
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public static void UnZip(string FileToUpZip, string ZipedFolder, string Password)
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{
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byte[] buffer = new byte[2048];
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while (ZipedFolder.LastIndexOf("\\") + 1 == ZipedFolder.Length)//检查路径是否以"\"结尾
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{
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ZipedFolder = ZipedFolder.Substring(0, ZipedFolder.Length - 1);//如果是则去掉末尾的"\"
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}
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using (ZipInputStream zipStream = new ZipInputStream(File.OpenRead(FileToUpZip)))
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{
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//判断Password
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if (Password != null && Password.Length > 0)
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{
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zipStream.Password = Password;
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}
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ZipEntry zipEntry = null;
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while ((zipEntry = zipStream.GetNextEntry()) != null)
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{
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string directoryName = Path.GetDirectoryName(zipEntry.Name);
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string fileName = Path.GetFileName(zipEntry.Name);
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if (!string.IsNullOrEmpty(directoryName) && !Directory.Exists(ZipedFolder + @"\" + directoryName))
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{
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Directory.CreateDirectory(ZipedFolder + @"\" + directoryName);
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}
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if (!string.IsNullOrEmpty(fileName))
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{
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if (zipEntry.CompressedSize == 0)
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break;
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if (zipEntry.IsDirectory)//如果压缩格式为文件夹方式压缩
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{
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directoryName = Path.GetDirectoryName(ZipedFolder + @"\" + zipEntry.Name);
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Directory.CreateDirectory(directoryName);
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}
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else//2012-5-28修改，支持单个文件压缩时自己创建目标文件夹
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{
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if (!Directory.Exists(ZipedFolder))
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{
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Directory.CreateDirectory(ZipedFolder);
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}
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}
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using (FileStream stream = File.Create(ZipedFolder + @"\" + zipEntry.Name))
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{
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while (true)
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{
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int size = zipStream.Read(buffer, 0, buffer.Length);
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if (size > 0)
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{
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stream.Write(buffer, 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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}
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}
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}
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}
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}
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}
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} |