windows mobile 上文件压缩与解压缩之二
Author：quietwalk
Date：2010-10-20
使用：ICSharpCode.SharpZipLib.Zip
using System;
using System.Linq;
using System.Collections.Generic;
using System.Text;
using ICSharpCode.SharpZipLib.Zip;//ZipOutputStream
using System.IO;//FileMode
//ZipXmlFile()使用中，原来的ZipFile()比较繁琐，不用。
namespace quietwalk.ZipUnZip
{
public class SharpZipHelper
{
#region zip
//需要压缩的XML文件所在的目录
public static string XmlToZipPath = @"\Storage Card\PDADataExchange\Send\xml\";
//压缩之后的ZIP包所放的目录
public static string XmlZipedPath = @"\Storage Card\PDADataExchange\Send\zip\";
//获取指定目录下的所有文件名
public static string[] GetAllXmlFileName()
{
try
{
DirectoryInfo DirInfo = new DirectoryInfo(XmlToZipPath);
FileInfo[] files = DirInfo.GetFiles();
System.Collections.ArrayList lsXmlFileName = new System.Collections.ArrayList();
if (files.Length != 0)
{
for (int i = 0; i < files.Length; i++)
{
lsXmlFileName.Add( files[i].Name);
}
}
int iCount = lsXmlFileName.Count;
string[] strXmlFileName = new string[iCount];
for (int j = 0; j < iCount; j++)
strXmlFileName[j] = lsXmlFileName[j].ToString();
return strXmlFileName;
}
catch (Exception ex)
{
throw (ex);
// return null;
}
}
//strZipedFileName:压缩包的名称
//不设置密码
//不设置备注
//不设置压缩比
public static void ZipXmlFile(string strZipedFileName)
{
ZipOutputStream s = new ZipOutputStream(System.IO.File.Open(XmlZipedPath + strZipedFileName, FileMode.Create));
//Get all xml file's name.
string[] fileNamesToZip = GetAllXmlFileName();
if (fileNamesToZip.Length != 0)
{
foreach (string file in fileNamesToZip)
{
FileStream fs = File.OpenRead(XmlToZipPath + file); //打开待压缩文件
byte[] buffer = new byte[fs.Length];
fs.Read(buffer, 0, buffer.Length); //读取文件流
ZipEntry entry = new ZipEntry(file); //新建实例
entry.DateTime = DateTime.Now;
entry.Size = fs.Length;
fs.Close();
s.PutNextEntry(entry);
s.Write(buffer, 0, buffer.Length);
}
s.Finish();
s.Close();
}
}
#endregion zip
//******************************************************************** #region UnZip
//需要解压缩的zip包的路径，包括文件名,从程序中设置
public static string strZipFilePath;
public static String ZipFilePath
{
get { return strZipFilePath; }
set { strZipFilePath = value; }
}
//解压缩后的XML文件所放的路径
public static String UnZipedDir = @"\Storage Card\PDADataExchange\Received\xml\";
//解压缩ZIP文件到指定文件夹
public static void UnZipFile()
{
ZipInputStream s = new ZipInputStream(File.OpenRead(ZipFilePath));
try
{
ZipEntry theEntry;
while ((theEntry = s.GetNextEntry()) != null)
{
string directoryName = Path.GetDirectoryName(UnZipedDir);// @"\Storage Card\PDADataExchange\Receive\xml\";
string pathname = Path.GetDirectoryName(theEntry.Name);
string fileName = Path.GetFileName(theEntry.Name);
//生成解压目录
pathname = pathname.Replace(":", "$");//处理压缩时带有盘符的问题
directoryName = directoryName + "\\" + pathname;
Directory.CreateDirectory(directoryName);
if (fileName != String.Empty)
{
//解压文件到指定的目录
FileStream streamWriter = File.Create(directoryName + fileName); //directoryName + "\\" + fileName
int size = 2048;
byte[] data = new byte[2048];
while (true)
{
size = s.Read(data, 0, data.Length);
if (size > 0)
{
streamWriter.Write(data, 0, size);
}
else
{
break;
}
}
streamWriter.Close();
}
}
s.Close();
}
catch (Exception eu)
{
throw eu;
}
finally
{
s.Close();
}
}
#endregion UnZip
}
}
