init lserp cs 5.0
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cyf
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using System;
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using System.Collections.Generic;
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using System.Text;
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using System.IO;
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using ICSharpCode.SharpZipLib.Checksums;
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using ICSharpCode.SharpZipLib.Zip;
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namespace Zhaizj.Framework.Utils
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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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public class ZipHelper
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{
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public string cutStr = "";
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public void ZipFile(string FileToZip, string ZipedFile, int CompressionLevel, int BlockSize)
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{
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//如果文件没有找到则报错。
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if (!System.IO.File.Exists(FileToZip))
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{
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throw new System.IO.FileNotFoundException("指定的文件不存在，路径【 " + FileToZip + "】！操作取消。");
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}
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System.IO.FileStream StreamToZip = new System.IO.FileStream(FileToZip, System.IO.FileMode.Open, System.IO.FileAccess.Read);
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System.IO.FileStream ZipFile = System.IO.File.Create(ZipedFile);
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ZipOutputStream ZipStream = new ZipOutputStream(ZipFile);
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ZipEntry ZipEntry = new ZipEntry("ZippedFile");
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ZipStream.PutNextEntry(ZipEntry);
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ZipStream.SetLevel(CompressionLevel);
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byte[] buffer = new byte[BlockSize];
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System.Int32 size = StreamToZip.Read(buffer, 0, buffer.Length);
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ZipStream.Write(buffer, 0, size);
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try
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{
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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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ZipStream.Write(buffer, 0, sizeRead);
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size += sizeRead;
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}
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}
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catch (System.Exception ex)
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{
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throw ex;
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}
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ZipStream.Finish();
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ZipStream.Close();
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StreamToZip.Close();
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}
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/// <summary>
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/// 解压缩文件(压缩文件中含有子目录)
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/// </summary>
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/// <param name="zipfilepath">待解压缩的文件路径</param>
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/// <param name="unzippath">解压缩到指定目录</param>
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public void UnZipFile(string zipfilepath, string unzippath)
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{
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ZipInputStream s = new ZipInputStream(System.IO.File.OpenRead(zipfilepath));
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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(unzippath);
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string fileName = Path.GetFileName(theEntry.Name);
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//生成解压目录
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Directory.CreateDirectory(directoryName);
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if (fileName != String.Empty)
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{
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//如果文件的压缩后大小为0那么说明这个文件是空的,因此不需要进行读出写入
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if (theEntry.CompressedSize == 0)
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break;
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//解压文件到指定的目录
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directoryName = Path.GetDirectoryName(unzippath + theEntry.Name);
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//建立下面的目录和子目录
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Directory.CreateDirectory(directoryName);
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FileStream streamWriter = System.IO.File.Create(unzippath + theEntry.Name);
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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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//Get all DirectoryInfo
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private void direct(DirectoryInfo di, ref ZipOutputStream s, Crc32 crc)
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{
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//DirectoryInfo di = new DirectoryInfo(filenames);
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DirectoryInfo[] dirs = di.GetDirectories("*");
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//遍历目录下面的所有的子目录
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foreach (DirectoryInfo dirNext in dirs)
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{
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//将该目录下的所有文件添加到 ZipOutputStream s 压缩流里面
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FileInfo[] a = dirNext.GetFiles();
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this.writeStream(ref s, a, crc);
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//递归调用直到把所有的目录遍历完成
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direct(dirNext, ref s, crc);
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}
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}
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private void writeStream(ref ZipOutputStream s, FileInfo[] a, Crc32 crc)
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{
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foreach (FileInfo fi in a)
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{
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//string fifn = fi.FullName;
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FileStream fs = fi.OpenRead();
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byte[] buffer = new byte[fs.Length];
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fs.Read(buffer, 0, buffer.Length);
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//ZipEntry entry = new ZipEntry(file); Path.GetFileName(file)
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string file = fi.FullName;
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file = file.Replace(cutStr, "");
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ZipEntry entry = new ZipEntry(file);
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entry.DateTime = DateTime.Now;
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// set Size and the crc, because the information
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// about the size and crc should be stored in the header
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// if it is not set it is automatically written in the footer.
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// (in this case size == crc == -1 in the header)
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// Some ZIP programs have problems with zip files that don't store
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// the size and crc in the header.
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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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/// <summary>
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/// 压缩指定目录下指定文件(包括子目录下的文件)
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/// </summary>
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/// <param name="zippath">args[0]为你要压缩的目录所在的路径
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/// 例如：D:\\temp\\ (注意temp 后面加 \\ 但是你写程序的时候怎么修改都可以)</param>
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/// <param name="zipfilename">args[1]为压缩后的文件名及其路径
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/// 例如：D:\\temp.zip</param>
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/// <param name="fileFilter">文件过滤, 例如*.xml,这样只压缩.xml文件.</param>
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public bool ZipFileMain(string zippath, string zipfilename, string fileFilter)
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{
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try
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{
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//string filenames = Directory.GetFiles(args[0]);
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Crc32 crc = new Crc32();
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ZipOutputStream s = new ZipOutputStream(System.IO.File.Create(zipfilename));
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s.SetLevel(6); // 0 - store only to 9 - means best compression
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DirectoryInfo di = new DirectoryInfo(zippath);
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FileInfo[] a = di.GetFiles(fileFilter);
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cutStr = zippath.Trim();
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//压缩这个目录下的所有文件
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writeStream(ref s, a, crc);
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//压缩这个目录下子目录及其文件
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direct(di, ref s, crc);
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s.Finish();
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s.Close();
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}
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catch
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{
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return false;
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}
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return true;
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}
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}
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}
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