using ICSharpCode.SharpZipLib.Checksums;
using ICSharpCode.SharpZipLib.Zip;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
namespace WLQDDR.BusinessPlugIn
{
public class ZipHelper
{
/// <summary>
/// ZIP：压缩文件夹
/// add yuangang by 2016-06-13
/// </summary>
/// <param name="DirectoryToZip">需要压缩的文件夹（绝对路径）</param>
/// <param name="ZipedPath">压缩后的文件路径（绝对路径）</param>
/// <param name="ZipedFileName">压缩后的文件名称（文件名，默认 同源文件夹同名）</param>
/// <param name="IsEncrypt">是否加密（默认 加密）</param>
public static void ZipDirectory(string DirectoryToZip, string ZipedPath, string ZipedFileName = "", bool IsEncrypt = true)
{
//如果目录不存在，则报错
if (!System.IO.Directory.Exists(DirectoryToZip))
{
throw new System.IO.FileNotFoundException("指定的目录: " + DirectoryToZip + " 不存在!");
}
//文件名称（默认同源文件名称相同）
string ZipFileName = string.IsNullOrEmpty(ZipedFileName) ? ZipedPath + "\\" + new DirectoryInfo(DirectoryToZip).Name + ".zip" : ZipedPath + "\\" + ZipedFileName + ".zip";
using (System.IO.FileStream ZipFile = System.IO.File.Create(ZipFileName))
{
using (ZipOutputStream s = new ZipOutputStream(ZipFile))
{
if (IsEncrypt)
{
//压缩文件加密
s.Password = "123";
}
ZipSetp(DirectoryToZip, s, "");
}
}
}
/// <summary>
/// 递归遍历目录
/// add yuangang by 2016-06-13
/// </summary>
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);
}
}
}
}
}
}