一些工具函数-- 压缩与解压

public class FolderZipper { public static void ZipFiles(string inputFolderPath, string outputPathAndFile, string password) { ArrayList ar = GenerateFileList(inputFolderPath); // generate file list int TrimLength = (Directory.GetParent(inputFolderPath)).ToString().Length; // find number of chars to remove // from orginal file path TrimLength += 1; //remove '/' FileStream ostream; byte[] obuffer; //string outPath = inputFolderPath + @"/" + outputPathAndFile; string outPath = outputPathAndFile; ZipOutputStream oZipStream = new ZipOutputStream(File.Create(outPath)); // create zip stream if (password != null && password != String.Empty) oZipStream.Password = password; oZipStream.SetLevel(9); // maximum compression ZipEntry oZipEntry; foreach (string Fil in ar) // for each file, generate a zipentry { oZipEntry = new ZipEntry(Fil.Remove(0, TrimLength)); oZipStream.PutNextEntry(oZipEntry); if (!Fil.EndsWith(@"/")) // if a file ends with '/' its a directory { ostream = File.OpenRead(Fil); obuffer = new byte[ostream.Length]; ostream.Read(obuffer, 0, obuffer.Length); oZipStream.Write(obuffer, 0, obuffer.Length); } } oZipStream.Finish(); oZipStream.Close(); } private static ArrayList GenerateFileList(string Dir) { ArrayList fils = new ArrayList(); bool Empty = true; foreach (string file in Directory.GetFiles(Dir)) // add each file in directory { fils.Add(file); Empty = false; } if (Empty) { if (Directory.GetDirectories(Dir).Length == 0) // if directory is completely empty, add it { fils.Add(Dir + @"/"); } } foreach (string dirs in Directory.GetDirectories(Dir)) // recursive { foreach (object obj in GenerateFileList(dirs)) { fils.Add(obj); } } return fils; // return file list } public static void UnZipFiles(string zipPathAndFile, string outputFolder, string password, bool deleteZipFile) { ZipInputStream s = new ZipInputStream(File.OpenRead(zipPathAndFile)); if (password != null && password != String.Empty) s.Password = password; ZipEntry theEntry; string tmpEntry = String.Empty; while ((theEntry = s.GetNextEntry()) != null) { string directoryName = outputFolder; string fileName = Path.GetFileName(theEntry.Name); // create directory if (directoryName != "") { Directory.CreateDirectory(directoryName); } if (fileName != String.Empty) { if (theEntry.Name.IndexOf(".ini") < 0) { string fullPath = directoryName + "//" + theEntry.Name; fullPath = fullPath.Replace("// ", "//"); string fullDirPath = Path.GetDirectoryName(fullPath); if (!Directory.Exists(fullDirPath)) Directory.CreateDirectory(fullDirPath); FileStream streamWriter = File.Create(fullPath); 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(); if (deleteZipFile) File.Delete(zipPathAndFile); } }