操作系统课程设计报告文件管理系统.doc

计算机科学与技术学院课程设计报告 （ 20008 2009 学年度 第 一 学期 ）课程名称操作系统课程设计项目名称文件管理系统姓名*学号*专业班级地点教师一、设计任务及主要技术本设计的目的是通过设计和调试一个简单的文件系统，通过模拟文件操作命令的执行，来模拟文件管理，使学生对主要文件操作命令的实质和执行过程有比较深入的了解，掌握它们的基本实施方法。具体要求如下：设计一个支持n个用户的文件系统，每个用户可拥有多个文件；采用二级或二级以上的多级文件目录管理；对文件应设置存取控制保护方式，如“只能执行”、“允许读”、“允许写”等；系统的外部特征应接近于真实系统，可设置下述文件操作命令：建立文件、打开文件、关闭文件、删除文件、读文件、写文件、复制文件、查询目录；通过键盘使用该文件系统，系统应显示操作命令的执行结果。二、设计方案:主要模仿和实现Windows中”我的电脑”的部分功能系统原理框图：一、 实验源码 ：using System;using System.Collections.Generic;using System.Text;using System.IO;using System.Collections;namespace FileDirOperate / <summary> / 与文件有关的操作类 / </summary> public class FileOperate / <summary> / Deletes the file. / </summary> / <param name="FileFullPath">要删除的文件全路径</param> / <returns></returns> public bool DeleteFile(string FileFullPath) if (File.Exists(FileFullPath) = true) File.SetAttributes(FileFullPath, FileAttributes.Normal); File.Delete(FileFullPath); return true; else return false; / <summary> / Gets the name of the file.包括文件的扩展名 / </summary> / <param name="FileFullPath">文件的全路径</param> / <returns></returns> public string GetFileName(string FileFullPath) if (File.Exists(FileFullPath) = true) FileInfo F = new FileInfo(FileFullPath); return F.Name; else return null; / <summary> / Gets the name of the file. / </summary> / <param name="FileFullPath">文件的全路径</param> / <param name="IncludeExtension">是否包含文件的扩展名</param> / <returns></returns> public string GetFileName(string FileFullPath, bool IncludeExtension) if (File.Exists(FileFullPath) = true) FileInfo F = new FileInfo(FileFullPath); if (IncludeExtension = true) return F.Name; else return F.Name.Replace(F.Extension, ""); else return null; / <summary> / 得到文件的大小 / </summary> / <param name="info">FileInfo</param> / <returns></returns> public String getFileSize(FileInfo info) if (info.Exists = true) long FL =info.Length; if (FL > 1024 * 1024 * 1024) / KB MB GB TB return System.Convert.ToString(Math.Round(FL + 0.00) / (1024 * 1024 * 1024), 2) + " GB" else if (FL > 1024 * 1024) return System.Convert.ToString(Math.Round(FL + 0.00) / (1024 * 1024), 2) + " MB" else return System.Convert.ToString(Math.Round(FL + 0.00) / 1024, 2) + " KB" else return null; / <summary> / 得到文件的后缀名 / </summary> / <param name="info">FileInfo</param> / <returns></returns> public String getFileExtension(FileInfo info) if (info.Exists = true) String extension=info.Extension; return extension;/.Substring(1); / return extension.Substring(1, extension.Length - 1); else return null; / <summary> / Gets the file extension. / </summary> / <param name="FileFullPath">The file full path.</param> / <returns></returns> public string GetFileExtension(string FileFullPath) if (File.Exists(FileFullPath) = true) FileInfo F = new FileInfo(FileFullPath); return F.Extension; else return null; / <summary> / Opens the file. / </summary> / <param name="FileFullPath">The file full path.</param> / <returns></returns> public bool OpenFile(string FileFullPath) if (File.Exists(FileFullPath) = true) System.Diagnostics.Process.Start(FileFullPath); return true; else return false; / <summary> / Gets the size of the file. / </summary> / <param name="FileFullPath">The file full path.</param> / <returns></returns> public string GetFileSize(string FileFullPath) if (File.Exists(FileFullPath) = true) FileInfo F = new FileInfo(FileFullPath); long FL = F.Length; if (FL > 1024 * 1024 * 1024) / KB MB GB TB return System.Convert.ToString(Math.Round(FL + 0.00) / (1024 * 1024 * 1024), 2) + " GB" else if (FL > 1024 * 1024) return System.Convert.ToString(Math.Round(FL + 0.00) / (1024 * 1024), 2) + " MB" else return System.Convert.ToString(Math.Round(FL + 0.00) / 1024, 2) + " KB" else return null; / <summary> / Files to stream byte. / </summary> / <param name="FileFullPath">The file full path.</param> / <returns></returns> public byte FileToStreamByte(string FileFullPath) byte fileData = null; if (File.Exists(FileFullPath) = true) FileStream FS = new FileStream(FileFullPath, System.IO.FileMode.Open); fileData = new byteFS.Length; FS.Read(fileData, 0, fileData.Length); FS.Close(); return fileData; else return null; / <summary> / Bytes the stream to file. / </summary> / <param name="CreateFileFullPath">The create file full path.</param> / <param name="StreamByte">The stream byte.</param> / <returns></returns> public bool ByteStreamToFile(string CreateFileFullPath, byte StreamByte) try if (File.Exists(CreateFileFullPath) = true) DeleteFile(CreateFileFullPath); FileStream FS; FS = File.Create(CreateFileFullPath); FS.Write(StreamByte, 0, StreamByte.Length); FS.Close(); return true; catch return false; / <summary> / 序列化XML文件 / </summary> / <param name="FileFullPath">The file full path.</param> / <returns></returns> public bool SerializeXmlFile(string FileFullPath) try System.Data.DataSet DS = new System.Data.DataSet(); DS.ReadXml(FileFullPath); FileStream FS = new FileStream(FileFullPath + ".tmp", FileMode.OpenOrCreate); System.Runtime.Serialization.Formatters.Binary.BinaryFormatter FT = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter(); FT.Serialize(FS, DS); FS.Close(); DeleteFile(FileFullPath); File.Move(FileFullPath + ".tmp", FileFullPath); return true; catch return false; / <summary> / 反序列化XML文件 / </summary> / <param name="FileFullPath">The file full path.</param> / <returns></returns> public bool DeserializeXmlFile(string FileFullPath) try System.Data.DataSet DS = new System.Data.DataSet(); FileStream FS = new FileStream(FileFullPath, FileMode.Open); System.Runtime.Serialization.Formatters.Binary.BinaryFormatter FT = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter(); (System.Data.DataSet)FT.Deserialize(FS).WriteXml(FileFullPath + ".tmp"); FS.Close(); DeleteFile(FileFullPath); File.Move(FileFullPath + ".tmp", FileFullPath); return true; catch return false; / <summary> / 得到文件的创建时间 / </summary> / <param name="info"></param> / <returns></returns> public String getFileCreateTime(FileInfo info) return info.CreationTime.ToString(); / <summary> / 得到文件最后一次修改时间 / </summary> / <param name="info"></param> / <returns></returns> public String getFileLastModifyTime(FileInfo info) return info.LastWriteTime.ToString(); / <summary> / 与文件夹有关的操作类 / </summary> public class DirOperate public enum OperateOption / <summary> / 存在删除再创建 / </summary> ExistDelete, / <summary> / 存在直接返回 / </summary> ExistReturn / <summary> / 创建文件夹 / </summary> / <param name="DirFullPath">The dir full path.</param> / <param name="DirOperateOption">The dir operate option.</param> / <returns></returns> public bool CreateDir(string DirFullPath, OperateOption DirOperateOption) try if (Directory.Exists(DirFullPath) = false) Directory.CreateDirectory(DirFullPath); else if (DirOperateOption = OperateOption.ExistDelete) Directory.Delete(DirFullPath, true); return true; catch return false; / <summary> / 删除文件夹 / </summary> / <param name="DirFullPath">The dir full path.</param> / <returns>成功则为True 否则为False</returns> public bool DeleteDir(string DirFullPath) if (Directory.Exists(DirFullPath) = true) Directory.Delete(DirFullPath, true); return true; else return false; / <summary> / Gets the dir files. / </summary> / <param name="DirFullPath">The dir full path.</param> / <returns></returns> public string GetDirFiles(string DirFullPath) string FileList = null; if (Directory.Exists(DirFullPath) = true) FileList = Directory.GetFiles(DirFullPath, "*.*", SearchOption.TopDirectoryOnly); return FileList; / <summary> / Gets the dir files. / </summary> / <param name="DirFullPath">The dir full path.</param> / <param name="SO">The SO.</param> / <returns></returns> public string GetDirFiles(string DirFullPath, SearchOption SO) string FileList = null; if (Directory.Exists(DirFullPath) = true) FileList = Directory.GetFiles(DirFullPath, "*.*", SO); return FileList; ArrayList filelist = new ArrayList(); public ArrayList getDirFiles(String DirFullpath, String pattern) if (Directory.Exists(DirFullpath) DirectoryInfo inf = new DirectoryInfo(DirFullpath); FileSystemInfo infos = inf.GetFileSystemInfos(); foreach (FileSystemInfo info in infos) if (info is FileInfo) if(info.Name.Contains(pattern) filelist.Add(info.FullName); else if (info.Name.Contains(pattern) filelist.Add(info.FullName); getDirFiles(info.FullName, pattern); return filelist; / <summary> / Gets the dir files. / </summary> / <param name="DirFullPath">The dir full path.</param> / <param name="SearchPattern">The search pattern.</param> / <returns>所有文件</returns> public string GetDirFiles(string DirFullPath, string SearchPattern) string FileList = null; if (Directory.Exists(DirFullPath) = true) FileList = Directory.GetFiles(DirFullPath, SearchPattern); return FileList; / <summary> / Gets the dir files. / </summary> / <param name="DirFullPath">The dir full path.</param> / <param name="SearchPattern">The search pattern.</param> / <param name="SO">The SO.</param> / <return