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操作系统实验文件管理C++代码

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. #include <stdio.h>#include <stdlib.h>#include <conio.h>#include <string.h>#include<stack>using namespace std;#define BLKSIZE 512 // 数据块的大小#define BLKNUM 512 // 数据块的块数#define INODESIZE 32 // i节点的大小#define INODENUM 32 // i节点的数目#define FILENUM 8 // 打开文件表的数目//用户typedef struct{char user_name[10]; // 用户名char password[10]; // 密码} User;//i节点typedef struct{short inum; // 文件i节点号char file_name[10]; // 文件名char type; // 文件类型char user_name[10]; // 文件所有者short iparent; // 父目录的i节点号short length; // 文件长度short address[2]; // 存放文件的地址} Inode;//打开文件表typedef struct{short inum; // i节点号char file_name[10]; // 文件名short mode; // 读写模式(1:read, 2:write,// 3:read and write) } File_table;// 申明函数void login(void);void init(void);int analyse(char *); void save_inode(int); int get_blknum(void); void read_blk(int); void write_blk(int); void release_blk(int); void pathset();void del(int);// 用户命令处理函数void help(void);void cd(void);void dir(void);void mkdir(void);void creat(void);void open(void);void read(void);void write(void);void close(void);void delet(void);void logout(void); void command(void); void quit();//main.cpp文件//#include "head.h"//定义全局变量char choice;int argc; // 用户命令的参数个数char *argv[5]; // 用户命令的参数int inum_cur; // 当前目录char temp[2*BLKSIZE]; // 缓冲区User user; // 当前的用户char bitmap[BLKNUM]; // 位图数组Inode inode_array[INODENUM]; // i节点数组File_table file_array[FILENUM]; // 打开文件表数组char image_name[10] = "data.dat"; // 文件系统名称FILE *fp; // 打开文件指针//创建映像hd，并将所有用户和文件清除void format(void){int i;Inode inode;printf("Will be to format filesystem...\n");printf("WARNING:ALL DATA ON THIS FILESYSTEM WILL BE LOST!\n"); printf("Proceed with Format(Y/N)?");scanf("%c", &choice);getchar();if((choice == 'y') || (choice == 'Y')){if((fp=fopen(image_name, "w+b")) == NULL){printf("Can't create file %s\n", image_name);exit(-1);}for(i = 0; i < BLKSIZE; i++)fputc('0', fp);inode.inum = 0;strcpy(inode.file_name, "/");inode.type = 'd';strcpy(er_name, "/");inode.iparent = 0;inode.length = 0;inode.address[0] = -1;inode.address[1] = -1;fwrite(&inode, sizeof(Inode), 1, fp);inode.inum = -1;for(i = 0; i < 31; i++)fwrite(&inode, sizeof(Inode), 1, fp);for(i = 0; i < BLKNUM*BLKSIZE; i++)fputc('\0', fp);fclose(fp);// 打开文件user.txtif((fp=fopen("user.txt", "w+")) == NULL){printf("Can't create file %s\n", "user.txt");exit(-1);}fclose(fp);printf("Filesystem created successful.Please first login!\n");}return ;}// 功能: 用户登陆，如果是新用户则创建用户void login(void){char *p;int flag;char user_name[10];char password[10];char file_name[10] = "user.txt";do{printf("login:");gets(user_name);printf("password:");p=password;while(*p=getch()){if(*p == 0x0d){*p='\0'; //将输入的回车键转换成空格break;}printf("*"); //将输入的密码以"*"号显示p++;}flag = 0;if((fp = fopen(file_name, "r+")) == NULL){printf("\nCan't open file %s.\n", file_name);printf("This filesystem not exist, it will be create!\n");format();login();}while(!feof(fp)){fread(&user, sizeof(User), 1, fp);// 已经存在的用户, 且密码正确if(!strcmp(er_name, user_name) &&!strcmp(user.password, password)){fclose(fp);printf("\n");return ;}// 已经存在的用户, 但密码错误else if(!strcmp(er_name, user_name)){printf("\nThis user is exist, but password is incorrect.\n");flag = 1;fclose(fp);break;}}if(flag == 0) break;}while(flag);// 创建新用户if(flag == 0){printf("\nDo you want to creat a new user?(y/n):");scanf("%c", &choice);gets(temp);if((choice == 'y') || (choice == 'Y')){strcpy(er_name, user_name);strcpy(user.password, password);fwrite(&user, sizeof(User), 1, fp);fclose(fp);return ;}if((choice == 'n') || (choice == 'N'))login();}}// 功能: 将所有i节点读入存void init(void){int i;if((fp = fopen(image_name, "r+b")) == NULL){printf("Can't open file %s.\n", image_name);exit(-1);}// 读入位图for(i = 0; i < BLKNUM; i++)bitmap[i] = fgetc(fp);// 显示位图// 读入i节点信息for(i = 0; i < INODENUM; i++)fread(&inode_array[i], sizeof(Inode), 1, fp);// 显示i节点// 当前目录为根目录inum_cur = 0;// 初始化打开文件表for(i = 0; i < FILENUM; i++)file_array[i].inum = -1;}// 功能: 分析用户命令, 将分析结果填充argc和argv// 结果: 0-13为系统命令, 14为命令错误int analyse(char *str){int i;char temp[20];char *ptr_char;char *syscmd[]={"help", "cd", "dir", "mkdir", "create", "open", "read", "write","close", "delet", "logout", "clear","format","quit"};argc = 0;for(i = 0, ptr_char = str; *ptr_char != '\0'; ptr_char++){if(*ptr_char != ' '){while(*ptr_char != ' ' && (*ptr_char != '\0'))temp[i++] = *ptr_char++;argv[argc] = (char *)malloc(i+1);strncpy(argv[argc], temp, i);argv[argc][i] = '\0';argc++;i = 0;if(*ptr_char == '\0') break;}}if(argc != 0){for(i = 0; (i < 14) && strcmp(argv[0], syscmd[i]); i++);return i;}elsereturn 14;}// 功能: 将num号i节点保存到hd.datvoid save_inode(int num){if((fp=fopen(image_name, "r+b")) == NULL){printf("Can't open file %s\n", image_name);exit(-1);}fseek(fp, BLKNUM +num*sizeof(Inode), SEEK_SET);fwrite(&inode_array[num], sizeof(Inode), 1, fp);fclose(fp);}// 功能: 申请一个数据块int get_blknum(void){int i;for(i = 0; i < BLKNUM; i++)if(bitmap[i] == '0') break;// 未找到空闲数据块if(i == BLKNUM){printf("Data area is full.\n");exit(-1);}bitmap[i] = '1';if((fp=fopen(image_name, "r+b")) == NULL){printf("Can't open file %s\n", image_name);exit(-1);}fseek(fp, i, SEEK_SET);fputc('1', fp);fclose(fp);return i;}// 功能: 将i节点号为num的文件读入tempvoid read_blk(int num){int i, len;char ch;int add0, add1;len = inode_array[num].length;add0 = inode_array[num].address[0];if(len > 512)add1 = inode_array[num].address[1];if((fp = fopen(image_name, "r+b")) == NULL){printf("Can't open file %s.\n", image_name);exit(-1);}fseek(fp, BLKSIZE+INODESIZE*INODENUM +add0*BLKSIZE, SEEK_SET);ch = fgetc(fp);for(i=0; (i < len) && (ch != '\0') && (i < 512); i++){temp[i] = ch;ch = fgetc(fp);}if(i >= 512){fseek(fp,BLKSIZE+INODESIZE*INODENUM+add1*BLKSIZE, SEEK_SET);ch = fgetc(fp);for(; (i < len) && (ch != '\0'); i++){temp[i] = ch;ch = fgetc(fp);}}temp[i] = '\0';fclose(fp);}// 功能: 将temp的容输入hd的数据区void write_blk(int num){int i, len;int add0, add1;add0 = inode_array[num].address[0];len = inode_array[num].length;if((fp = fopen(image_name, "r+b")) == NULL){printf("Can't open file %s.\n", image_name);exit(-1);}fseek(fp, BLKSIZE+INODESIZE*INODENUM+add0*BLKSIZE, SEEK_SET);for(i=0; (i<len)&&(temp[i]!='\0')&&(i < 512); i++)fputc(temp[i], fp);if(i == 512){add1 = inode_array[num].address[1];fseek(fp, BLKSIZE+INODESIZE*INODENUM+add1*BLKSIZE, SEEK_SET);for(; (i < len) && (temp[i] != '\0'); i++)fputc(temp[i], fp);}fputc('\0', fp);fclose(fp);}// 功能: 释放文件块号为num的文件占用的空间void release_blk(int num){FILE *fp;if((fp=fopen(image_name, "r+b")) == NULL){printf("Can't open file %s\n", image_name);exit(-1);}bitmap[num] = '0';fseek(fp, num, SEEK_SET);fputc('0', fp);fclose(fp);}// 功能: 显示帮助命令void help(void){printf("command: \n\help --- show help menu \n\clear --- clear the screen \n\cd --- change directory \n\mkdir --- make directory \n\create --- create a new file \n\open --- open a exist file \n\read --- read a file \n\write --- write something to a file \n\close --- close a file \n\delet --- delete a exist file or directory \n\ format --- format a exist filesystem \n\logout --- exit user \n\quit --- exit this system\n");}//设置文件路径void pathset(){char path[50];int m,n;if(inode_array[inum_cur].inum == 0)strcpy(path,er_name);else{strcpy(path,er_name);m=0;n=inum_cur;while(m != inum_cur){while(inode_array[n].iparent != m){n = inode_array[n].iparent;}strcat(path,"/");strcat(path,inode_array[n].file_name);m = n;n = inum_cur;}}printf("[%s]$",path);}// 功能: 切换目录(cd .. 或者cd dir1)void cd(void){int i;if(argc != 2){printf("Command cd must have two args. \n");return ;}if(!strcmp(argv[1], ".."))inum_cur = inode_array[inum_cur].iparent;else{for(i = 0; i < INODENUM; i++)if((inode_array[i].inum>0)&&(inode_array[i].type=='d')&&(inode_array[i].iparent==inum_cur)&&!strcmp(inode_array[i].file_name,argv[1])&&!strcmp(inode_array[i].user_name,er_name))break;if(i == INODENUM)printf("This directory isn't exsited.\n");elseinum_cur = i;}}// 功能: 显示当前目录下的子目录和文件(dir)void dir(void){int i;int dcount=0,fcount=0;short bcount=0;if(argc != 1){printf("Command dir must have one args. \n");return ;}// 遍历i节点数组, 显示当前目录下的子目录和文件名for(i = 0; i < INODENUM; i++)if((inode_array[i].inum> 0) &&(inode_array[i].iparent == inum_cur)&&!strcmp(inode_array[i].user_name,er_name)) {if(inode_array[i].type == 'd'){dcount++;printf("%-20s<DIR>\n", inode_array[i].file_name);}else{fcount++;bcount+=inode_array[i].length;printf("%-20s%12d bytes\n", inode_array[i].file_name,inode_array[i].length);}}printf("\n %d file(s)%11d bytes\n",fcount,bcount);printf(" %d dir(s) %11d bytes FreeSpace\n",dcount,1024*1024-bcount);}// 功能: 在当前目录下创建子目录(mkdir dir1)void mkdir(void){int i;if(argc != 2){printf("command mkdir must have two args. \n");return ;}// 遍历i节点数组, 查找未用的i节点for(i = 0; i < INODENUM; i++)if(inode_array[i].inum < 0) break;if(i == INODENUM){printf("Inode is full.\n");exit(-1);}inode_array[i].inum = i;strcpy(inode_array[i].file_name, argv[1]);inode_array[i].type = 'd';strcpy(inode_array[i].user_name,er_name);inode_array[i].iparent = inum_cur;inode_array[i].length = 0;save_inode(i);}// 功能: 在当前目录下创建文件(creat file)void create(void){int i;if(argc != 2){printf("command creat must have two args. \n");return ;}for(i = 0; i < INODENUM; i++){if((inode_array[i].inum > 0) &&(inode_array[i].type == 'f') &&!strcmp(inode_array[i].file_name, argv[1])) {printf("This file is exsit.\n");return ;}}for(i = 0; i < INODENUM; i++)if(inode_array[i].inum < 0) break;if(i == INODENUM){printf("Inode is full.\n");exit(-1);}inode_array[i].inum = i;strcpy(inode_array[i].file_name, argv[1]);inode_array[i].type = 'f';strcpy(inode_array[i].user_name, er_name);inode_array[i].iparent = inum_cur;inode_array[i].length = 0;save_inode(i);}// 功能: 打开当前目录下的文件(open file1)void open(){int i, inum, mode, filenum;if(argc != 2){printf("command open must have two args. \n");return ;}for(i = 0; i < INODENUM; i++)if((inode_array[i].inum > 0) &&(inode_array[i].type == 'f') &&!strcmp(inode_array[i].file_name,argv[1])&&!strcmp(inode_array[i].user_name,er_name))break;if(i == INODENUM){printf("The file you want to open doesn't exsited.\n");return ;}inum = i;printf("Please input open mode:(1: read, 2: write, 3: read and write):"); scanf("%d", &mode);getchar();if((mode < 1) || (mode > 3)){printf("Open mode is wrong.\n");return;}for(i = 0; i < FILENUM; i++)if(file_array[i].inum < 0) break;if(i == FILENUM){printf("The file table is full, please close some file.\n");return ;}filenum = i;file_array[filenum].inum = inum;strcpy(file_array[filenum].file_name, inode_array[inum].file_name); file_array[filenum].mode = mode;printf("Open file %s by ", file_array[filenum].file_name);if(mode == 1) printf("read only.\n");else if(mode == 2) printf("write only.\n");else printf("read and write.\n");}// 功能: 从文件中读出字符(read file1)void read(){int i, inum;if(argc != 2){printf("command read must have two args. \n");return;}for(i = 0; i < FILENUM; i++)if((file_array[i].inum > 0) &&!strcmp(file_array[i].file_name,argv[1]))break;if(i == FILENUM){printf("Open %s first.\n", argv[1]);return ;}else if(file_array[i].mode == 2){printf("Can't read %s.\n", argv[1]);return ;}inum = file_array[i].inum;printf("The length of %s:%d.\n", argv[1], inode_array[inum].length);if(inode_array[inum].length > 0){read_blk(inum);for(i = 0; (i < inode_array[inum].length) && (temp[i] != '\0'); i++) printf("%c", temp[i]);}}// 功能: 向文件中写入字符(write file1)void write(){int i, inum, length;if(argc != 2){printf("Command write must have two args. \n");return ;}for(i = 0; i < FILENUM; i++)if((file_array[i].inum>0)&&!strcmp(file_array[i].file_name,argv[1])) break;if(i == FILENUM){printf("Open %s first.\n", argv[1]);return ;}else if(file_array[i].mode == 1){printf("Can't write %s.\n", argv[1]);return ;}inum = file_array[i].inum;printf("The length of %s:%d\n", inode_array[inum].file_name, inode_array[inum].length);if(inode_array[inum].length == 0){i=0;inode_array[inum].address[0] = get_blknum();printf("Input the data(CTRL+Z to end):\n");while(i<1023&&(temp[i]=getchar())!=EOF) i++;temp[i]='\0';length=strlen(temp)+1;inode_array[inum].length=length;if(length > 512)inode_array[inum].address[1] = get_blknum();save_inode(inum);write_blk(inum);}elseprintf("This file can't be written.\n");}// 功能: 关闭已经打开的文件(close file1)void close(void){int i;if(argc != 2){printf("Command close must have two args. \n");return ;}for(i = 0; i < FILENUM; i++)if((file_array[i].inum > 0) &&!strcmp(file_array[i].file_name, argv[1])) break;if(i == FILENUM){printf("This file doesn't be opened.\n");return ;}else{file_array[i].inum = -1;printf("Close %s success!\n", argv[1]);}}//回收i节点，有文件则删除文件void del(int i){inode_array[i].inum = -1;if(inode_array[i].length > 0){release_blk(inode_array[i].address[0]);if(inode_array[i].length >= 512)release_blk(inode_array[i].address[1]);}save_inode(i);}//删除子目录树和文件void delet(void){if(argc != 2){printf("Command delete must have two args. \n");return ;}int n,t,i;stack<int> istk;for(i = 0; i < INODENUM; i++)//查找待删除子目录if((inode_array[i].inum >=0) &&(inode_array[i].iparent == inum_cur)&&(!strcmp(inode_array[i].file_name,argv[1]))&&(!strcmp(inode_array[i].user_name,er_name))) {n=inode_array[i].inum;break;}if(i==INODENUM) puts("Directory ERROR");else{istk.push(n);while(!istk.empty()){t=istk.top();istk.pop();del(t);for(i = 0; i < INODENUM; i++)if((inode_array[i].inum >=0) &&(inode_array[i].iparent == t))istk.push(i);}}}// 功能: 退出当前用户(logout)void logout(){printf("Do you want to exit this user(y/n)?");scanf("%c", &choice);getchar();if((choice == 'y') || (choice == 'Y')){printf("\nCurrent user has exited!\n");login();}return ;}// 功能: 退出文件系统(quit)void quit(){printf("Do you want to exist(y/n):");scanf("%c", &choice);getchar();if((choice == 'y') || (choice == 'Y'))exit(0);}// 功能: 显示错误void errcmd(){printf("Command Error!!!\n");}//清空存中存在的用户名void free_user(){int i;for(i=0;i<10;i++)er_name[i]='\0';}// 功能: 循环执行用户输入的命令, 直到logout// "help", "cd", "dir", "mkdir", "creat", "open","read", "write", "close", "delete", "logout", "clear", "format","quit"void command(void){char cmd[100];system("cls");do{pathset();gets(cmd);switch(analyse(cmd)){case 0:help(); break; case 1:cd(); break; case 2:dir(); break; case 3:mkdir(); break; case 4:create(); break; case 5:open(); break; case 6:read(); break; case 7:write(); break; case 8:close(); break; case 9:delet(); break; case 10:logout();break; case 11:system("cls");break;case 12:format();init();free_user();login();break;case 13:quit(); break;case 14:errcmd(); break;default:break;}}while(1);}// 主函数int main(void){login();init();command();return 0;}。

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C#资源(文件)管理器 实验报告

C#资源(文件)管理器 实验报告

实验5 文件管理器【实验目的】⏹进一步实践windows窗口程序开发的流程；⏹掌握并熟练使用后台代码添加控件并定义布局和格式以及交互的技能。

【实验环境】Visual Studio 2005（或更高版本）【实验内容】设计一个基于后台代码添加控件的方式来实现文件管理器的显示和交互功能的Winform程序，鼓励扩展其他功能。

基本功能如下图：【实验记录】文件菜单：新建文件夹：提供即时重命名新建文件夹遇到相同明添加序号新建文本文档新建文本文档遇到相同明添加序号选中单个项目激活重命名和删除选中多个项目禁用重命名编辑菜单：（撤销功能未完成）选择项目激活剪切和复制状态栏显示选择项信息点击复制或剪切激活复制在同目录下黏贴同名添加“- 副本”点击全选查看菜单：点击状态栏默认打开点击后关闭点击大图标：点击小图标点击详细信息排序方式类型点击列头同样实现排序方式递减转至：前进禁用点击后退前进启用点击前进点击向上一级：向上到磁盘跟目录禁用向上一级帮助关于：工具栏与菜单栏选定状态同步功能相同右键菜单：启用状态与菜单栏工具栏同步功能相同本软件提供单项(多项未完成请勿测试)拖拽移动项目无法截图展示请自行测试【核心代码】using System;using System.Collections.Generic;using ponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using System.Security.AccessControl;using Microsoft.Win32;using System.IO;using System.Collections;namespace FileExplorer{public partial class Form1 : Form{static DirectoryInfo currentDir;string[] newpath = new string[1024];string[] oldpath = new string[1024];string[] type = new string[1024];List<string> ls = new List<string>();int ind;ListViewItemSorter sorter;public Form1(){InitializeComponent();sorter = new ListViewItemSorter();listView1.ListViewItemSorter = sorter;sorter.SortColumn = 0;sorter.SortOrder = SortOrder.Ascending;}private void Form1_Load(object sender, EventArgs e){getDisks();toolStripStatusLabel1.Text = DateTime.Now.ToString();}private void getDisks(){foreach (DriveInfo d in DriveInfo.GetDrives()){if (d.IsReady){TreeNode root = new TreeNode();root.Tag = ;treeView1.Nodes.Add(root);getAll(root);}}}private void getAll(TreeNode parentNode){#regionDirectoryInfo parentDir = new DirectoryInfo(parentNode.FullPath);DirectorySecurity s = new DirectorySecurity(parentNode.FullPath, AccessControlSections.Access);if (!s.AreAccessRulesProtected){if (parentDir.GetDirectories() != null){foreach (DirectoryInfo childDir in parentDir.GetDirectories()){TreeNode childNode = new TreeNode();childNode.Tag = childDir.FullName;parentNode.Nodes.Add(childNode);// getAll(childNode);}}}#endregion// #region// DirectoryInfo directory;// try// {// // 第一层路径// if (parentNode.Nodes.Count == 0)// {// directory = new DirectoryInfo(parentNode.FullPath);// foreach (DirectoryInfo dir in directory.GetDirectories())// {// TreeNode newNode = new TreeNode();// parentNode.Nodes.Add(newNode);// }// }// // 第二层路径// foreach (TreeNode node in parentNode.Nodes)// {// if (node.Nodes.Count == 0)// {// directory = new DirectoryInfo(node.FullPath);// foreach (DirectoryInfo dir in directory.GetDirectories())// {// TreeNode newNode = new TreeNode();// node.Nodes.Add(newNode);// }// }// }// }// catch (Exception doh)// {// Console.WriteLine(doh.Message);// }//#endregion}private void showListView(string path){this.listView1.Items.Clear();currentDir = new DirectoryInfo(path);DirectorySecurity s = new DirectorySecurity(path, AccessControlSections.Access);if (!s.AreAccessRulesProtected){if (currentDir.GetDirectories() != null){foreach (DirectoryInfo dir in currentDir.GetDirectories()){ListViewItem item = new ListViewItem();//this.imageList2.Images.Add(System.Drawing.Icon.FromHandle(dir.FullName));//FileAttributesitem.SubItems.Add("");item.SubItems.Add("文件夹");item.SubItems.Add(File.GetCreationTime(dir.FullName).ToString("u"));item.SubItems.Add(File.GetLastWriteTime(dir.FullName).ToString("u"));item.SubItems.Add(File.GetLastAccessTime(dir.FullName).ToString("u"));item.Tag = "0";item.ToolTipText = dir.FullName;item.ImageIndex = 0;//item.ImageIndex = this.imageList2.Images.Count - 1;this.listView1.Items.Add(item);}foreach (FileInfo file in currentDir.GetFiles()){ListViewItem item = new ListViewItem();item.SubItems.Add(file.Length<1024*1024?""+file.Length/1024+"KB":""+file.Length/1024/1024+" MB");item.SubItems.Add(checkFileType(file.FullName));item.SubItems.Add(File.GetCreationTime(file.FullName).ToString("u"));item.SubItems.Add(File.GetLastWriteTime(file.FullName).ToString("u"));item.SubItems.Add(File.GetLastAccessTime(file.FullName).ToString("u"));//if(!this.imageList1.Images.ContainsKey(Path.GetExtension()))//{// this.imageList1.Images.Add(Path.GetExtension(), System.Drawing.Icon.ExtractAssociatedIcon(file.FullName));//}this.imageList2.Images.Add(System.Drawing.Icon.ExtractAssociatedIcon(file.FullName));this.imageList3.Images.Add(System.Drawing.Icon.ExtractAssociatedIcon(file.FullName));this.imageList4.Images.Add(System.Drawing.Icon.ExtractAssociatedIcon(file.FullName));this.imageList5.Images.Add(System.Drawing.Icon.ExtractAssociatedIcon(file.FullName));item.Tag = "1";item.ToolTipText = file.FullName;if(this.listView1.View==rgeIcon)item.ImageIndex = this.imageList2.Images.Count - 1;if (this.listView1.View == rgeIcon)item.ImageIndex = this.imageList2.Images.Count - 1;if (this.listView1.View == View.SmallIcon)item.ImageIndex = this.imageList3.Images.Count - 1;if (this.listView1.View == View.List)item.ImageIndex = this.imageList4.Images.Count - 1;if (this.listView1.View == View.Details)item.ImageIndex = this.imageList5.Images.Count - 1;// item.ImageIndex = this.imageList1.Images.IndexOfKey(Path.GetExtension());;this.listView1.Items.Add(item);}}}toolStripStatusLabel2.Text ="\n"+listView1.Items.Count + "个项目";}private string checkFileType(string path){string ext = Path.GetExtension(path);try{string desc = (string)Registry.ClassesRoot.OpenSubKey(ext).GetValue(null);return (string)Registry.ClassesRoot.OpenSubKey(desc).GetValue(null);}catch (NullReferenceException nre) {return "不可识别的文件类型";}}private void treeView1_AfterSelect(object sender, TreeViewEventArgs e){getAll(e.Node); // 取得选择节点的子文件夹addressTB.Text = e.Node.FullPath; // 更新文本框内容currentDir = new DirectoryInfo(e.Node.FullPath);showListView(e.Node.FullPath);if (currentDir.Parent != null){toolStripButton1.Enabled = true;向上一级ToolStripMenuItem.Enabled = true;}ls.Add(addressTB.Text);ind = ls.Count - 1;}private void listView1_DoubleClick(object sender, EventArgs e){foreach (ListViewItem item in this.listView1.SelectedItems){if (item.Tag.ToString() == "0"){showListView(item.ToolTipText);addressTB.Text = item.ToolTipText;ls.Add(addressTB.Text);ind = ls.Count-1;}if (item.Tag.ToString() == "1"){try { System.Diagnostics.Process.Start(item.ToolTipText); }catch (Win32Exception w32e){MessageBox.Show("亲，对不起，系统没能找到合适的程序打开该文件哦！");}}}if (currentDir.Parent != null){toolStripButton1.Enabled = true;向上一级ToolStripMenuItem.Enabled = true;}}private void toolStripButton2_Click(object sender, EventArgs e){后退ToolStripMenuItem_Click(sender, e);}private void 大图标ToolStripMenuItem_Click(object sender, EventArgs e){viewcheck();大图标CToolStripMenuItem.Checked = true;大图标ToolStripMenuItem.Checked = true;this.listView1.View = rgeIcon;}private void 小图标ToolStripMenuItem_Click(object sender, EventArgs e){viewcheck();小图标OToolStripMenuItem.Checked = true;小图标ToolStripMenuItem.Checked = true;this.listView1.View = View.SmallIcon;}private void 列表ToolStripMenuItem_Click(object sender, EventArgs e){viewcheck();列表ToolStripMenuItem1.Checked = true;列表ToolStripMenuItem.Checked = true;this.listView1.View = View.List;}private void 详细信息ToolStripMenuItem_Click(object sender, EventArgs e){viewcheck();详细信息ToolStripMenuItem.Checked = true;详细信息ToolStripMenuItem1.Checked = true;this.listView1.View = View.Details;}private void Form1_SizeChanged(object sender, EventArgs e){this.treeView1.Width = this.Width * 24 / 100;this.listView1.Width = this.Width -this.treeView1.Width-10;}private void listView1_AfterLabelEdit(object sender, LabelEditEventArgs e)//重命名后判断是否存在同名{string temp = listView1.SelectedItems[0].Text;e.CancelEdit = false;if (bel == null)//取消重命名则退出编辑e.CancelEdit = true;else{if (Directory.Exists(currentDir.FullName + "\\" + bel)){MessageBox.Show("此目标已包含名为\"" + bel + "\"", "重命名失败", MessageBoxButtons.OK, MessageBoxIcon.Warning);e.CancelEdit = true;//同名则自动取消重命名恢复原有命名}else{Directory.Move(currentDir.FullName + "\\" + temp, currentDir.FullName + "\\" + bel);}}}private void 文件夹ToolStripMenuItem_Click(object sender, EventArgs e){string path = currentDir.FullName + "\\新建文件夹";path = directorynum(path);Directory.CreateDirectory(path);ListViewItem item = new ListViewItem(path.Substring(stIndexOf('\\') + 1));//添加listview的项item.SubItems.Add("");item.SubItems.Add("文件夹");item.SubItems.Add(File.GetCreationTime(path).ToString("u"));item.SubItems.Add(File.GetLastWriteTime(path).ToString("u"));item.SubItems.Add(File.GetLastAccessTime(path).ToString("u"));item.Tag = "0";item.ToolTipText = path;item.ImageIndex = 0;this.listView1.Items.Add(item);item.EnsureVisible();//滚动条到可见新建的文件夹item.BeginEdit();//新建完提供即时重命名}private void 文件ToolStripMenuItem_Click(object sender, EventArgs e){string path = currentDir.FullName + "\\新建文本文档.txt";path = filenum(path);File.CreateText(path);ListViewItem item = new ListViewItem(path.Substring(stIndexOf('\\') + 1));item.SubItems.Add(path.Length < 1024 * 1024 ? "" + path.Length / 1024 + "KB" : "" + path.Length / 1024 / 1024 + "MB");item.SubItems.Add(checkFileType(path));item.SubItems.Add(File.GetCreationTime(path).ToString("u"));item.SubItems.Add(File.GetLastWriteTime(path).ToString("u"));item.SubItems.Add(File.GetLastAccessTime(path).ToString("u"));item.Tag = "1";item.ToolTipText = path;this.listView1.Items.Add(item);item.EnsureVisible();item.BeginEdit();}private void 重命名MToolStripMenuItem_Click(object sender, EventArgs e) {listView1.SelectedItems[0].BeginEdit();}private void 文件夹FToolStripMenuItem_Click(object sender, EventArgs e) {文件夹ToolStripMenuItem_Click(sender, e);}private void 文本文档ToolStripMenuItem_Click(object sender, EventArgs e) {文件ToolStripMenuItem_Click(sender,e);}private void contextMenuStrip1_Opening(object sender, CancelEventArgs e) {if (listView1.SelectedItems.Count == 1){重命名MToolStripMenuItem1.Enabled = true;删除DToolStripMenuItem.Enabled = true;剪切CToolStripMenuItem.Enabled = true;复制CToolStripMenuItem1.Enabled = true;}if (listView1.SelectedItems.Count > 1){删除DToolStripMenuItem.Enabled = true;剪切CToolStripMenuItem.Enabled = true;复制CToolStripMenuItem1.Enabled = true;重命名MToolStripMenuItem1.Enabled = false;}if (listView1.SelectedItems.Count == 0){剪切CToolStripMenuItem.Enabled = false;复制CToolStripMenuItem1.Enabled = false;重命名MToolStripMenuItem1.Enabled = false;删除DToolStripMenuItem.Enabled = false;}}private void 文件FToolStripMenuItem_Click(object sender, EventArgs e) {if (listView1.SelectedItems.Count == 1){重命名MToolStripMenuItem.Enabled = true;删除ToolStripMenuItem.Enabled = true;}if (listView1.SelectedItems.Count > 1){删除ToolStripMenuItem.Enabled = true;重命名MToolStripMenuItem.Enabled = false;}if (listView1.SelectedItems.Count == 0){重命名MToolStripMenuItem.Enabled = false;删除ToolStripMenuItem.Enabled = false;}}private void 重命名MToolStripMenuItem1_Click(object sender, EventArgs e){重命名MToolStripMenuItem_Click(sender, e);}private void 新建NToolStripButton_Click(object sender, EventArgs e){文件ToolStripMenuItem_Click(sender, e);}private void 删除ToolStripMenuItem_Click(object sender, EventArgs e){DialogResult result = MessageBox.Show("确定要删除吗？", "确认删除", MessageBoxButtons.YesNo, rmation);if (result == DialogResult.Yes){foreach (ListViewItem temp in listView1.SelectedItems){if (temp.SubItems[1].Text.Equals(""))//判断所要删除的是文件或文件夹Directory.Delete(currentDir.FullName + "\\" + temp.Text, true);elseFile.Delete(currentDir.FullName + "\\" + temp.Text);temp.Remove();}}}private void 删除DToolStripMenuItem_Click(object sender, EventArgs e){删除ToolStripMenuItem_Click(sender, e);}private void CopyDirectory(string sourceDirName, string destDirName){if (sourceDirName.Substring(sourceDirName.Length - 1) != "\\"){sourceDirName = sourceDirName + "\\";//截取出源文件夹目录}if (destDirName.Substring(destDirName.Length - 1) != "\\"){destDirName = destDirName + "\\";//截取出目标文件夹目录}Directory.CreateDirectory(destDirName);//复制文件夹下的子文件夹foreach (string item in Directory.GetFiles(sourceDirName))//复制文件夹下的文件{File.Copy(item, destDirName + Path.GetFileName(item), true);}foreach (string item in Directory.GetDirectories(sourceDirName)){sourceDirName = item;destDirName = destDirName.Substring(0, stIndexOf("\\") + 1) + item.Substring(stIndexOf("\\") + 1);CopyDirectory(sourceDirName, destDirName);//递归完成文件夹下子文件夹和文件复制}}private void 复制CToolStripMenuItem_Click(object sender, EventArgs e){oldpath[0] = "复制";//设置标记复制或剪切type[0] = "";int i = 1;foreach (ListViewItem temp in listView1.SelectedItems){oldpath[i] = currentDir.FullName + "\\" + temp.Text;//存储源路径if (temp.SubItems[1].Text.Equals(""))//存储源类型以便后续操作type[i] = "文件夹";elsetype[i] = "文件";i++;}粘贴PToolStripButton.Enabled = true;粘贴PToolStripMenuItem.Enabled = true;粘贴PToolStripMenuItem1.Enabled = true;}private void 剪切TToolStripMenuItem_Click(object sender, EventArgs e){oldpath[0] = "剪切";type[0] = "";int i = 1;foreach (ListViewItem temp in listView1.SelectedItems){oldpath[i] = currentDir.FullName + "\\" + temp.Text;if (temp.SubItems[1].Text.Equals(""))type[i] = "文件夹";elsetype[i] = "文件";i++;}粘贴PToolStripButton.Enabled = true;粘贴PToolStripMenuItem.Enabled = true;粘贴PToolStripMenuItem1.Enabled = true;}private void 粘贴PToolStripMenuItem_Click(object sender, EventArgs e){if (oldpath[0].Equals("复制")){for (int i = 1; i < oldpath.Length; i++){if (oldpath[i] == null)//路径为空后停止黏贴break;newpath[i] = currentDir.FullName + oldpath[i].Substring(oldpath[i].LastIndexOf('\\')+1);//设置新路径名if (type[i].Equals("文件夹")){if (Directory.Exists(newpath[i]))//判断目标目录下是否有同名文件newpath[i] = newpath[i] + " - 副本";newpath[i] = directorynum(newpath[i]);CopyDirectory(oldpath[i], newpath[i]);}else{if (File.Exists(newpath[i]))//判断目标目录下是否有同名文件newpath[i] = newpath[i].Insert(newpath[i].LastIndexOf("."), " - 副本");newpath[i] = filenum(newpath[i]);File.Copy(oldpath[i], newpath[i]);}}}if (oldpath[0].Equals("剪切")){for (int i = 1; i < oldpath.Length; i++){if (oldpath[i] == null)break;newpath[i] = currentDir.FullName + oldpath[i].Substring(oldpath[i].LastIndexOf('\\') + 1);if (type[i].Equals("文件夹")){if (Directory.Exists(newpath[i]))//判断目标目录下是否有同名文件newpath[i] = newpath[i] + " - 副本";newpath[i] = directorynum(newpath[i]);CopyDirectory(oldpath[i], newpath[i]);Directory.Delete(oldpath[i], true);}else{if(File.Exists(newpath[i]))//判断目标目录下是否有同名文件newpath[i] = newpath[i].Insert(newpath[i].Length - 4, " - 副本");newpath[i] = filenum(newpath[i]);File.Move(oldpath[i], newpath[i]);}}}for (int i = 1; i < oldpath.Length; i++)//添加listview的项{if (newpath[i] == null)break;if (type[i].Equals("文件夹")){ListViewItem item = new ListViewItem(newpath[i].Substring(newpath[i].LastIndexOf('\\') + 1));item.SubItems.Add("");item.SubItems.Add("文件夹");item.SubItems.Add(File.GetCreationTime(newpath[i]).ToString("u"));item.SubItems.Add(File.GetLastWriteTime(newpath[i]).ToString("u"));item.SubItems.Add(File.GetLastAccessTime(newpath[i]).ToString("u"));item.Tag = "0";item.ToolTipText = newpath[i];item.ImageIndex = 0;this.listView1.Items.Add(item);}else{ListViewItem item = new ListViewItem(newpath[i].Substring(newpath[i].LastIndexOf('\\') + 1));item.SubItems.Add(newpath[i].Length < 1024 * 1024 ? "" + newpath[i].Length / 1024 + "KB" : "" + newpath[i].Length / 1024 / 1024 + "MB");item.SubItems.Add(checkFileType(newpath[i]));item.SubItems.Add(File.GetCreationTime(newpath[i]).ToString("u"));item.SubItems.Add(File.GetLastWriteTime(newpath[i]).ToString("u"));item.SubItems.Add(File.GetLastAccessTime(newpath[i]).ToString("u"));item.Tag = "1";item.ToolTipText = newpath[i];this.listView1.Items.Add(item);}}}private void 全选AToolStripMenuItem_Click(object sender, EventArgs e){foreach(ListViewItem temp in listView1.Items)temp.Selected = true;listView1.Focus();}private void 编辑EToolStripMenuItem_Click(object sender, EventArgs e){//判断是否有选定项再启用选项if (listView1.SelectedItems.Count >= 1){剪切TToolStripMenuItem.Enabled = true;复制CToolStripMenuItem.Enabled = true;}if (listView1.SelectedItems.Count == 0){剪切TToolStripMenuItem.Enabled = false;复制CToolStripMenuItem.Enabled = false;}}private void 剪切CToolStripMenuItem_Click(object sender, EventArgs e) {剪切TToolStripMenuItem_Click(sender, e);}private void 复制CToolStripMenuItem1_Click(object sender, EventArgs e) {复制CToolStripMenuItem_Click(sender,e);}private void 粘贴PToolStripMenuItem1_Click(object sender, EventArgs e) {粘贴PToolStripMenuItem_Click(sender, e);}private void 剪切UToolStripButton_Click(object sender, EventArgs e) {剪切TToolStripMenuItem_Click(sender, e);}private void 复制CToolStripButton_Click(object sender, EventArgs e) {复制CToolStripMenuItem_Click(sender, e);}private void 粘贴PToolStripButton_Click(object sender, EventArgs e) {粘贴PToolStripMenuItem_Click(sender, e);}private void viewcheck()//取消所有视图选项{详细信息ToolStripMenuItem.Checked = false;大图标CToolStripMenuItem.Checked = false;小图标OToolStripMenuItem.Checked = false;列表ToolStripMenuItem1.Checked = false;大图标ToolStripMenuItem.Checked = false;小图标ToolStripMenuItem.Checked = false;列表ToolStripMenuItem.Checked = false;详细信息ToolStripMenuItem1.Checked = false;}private void 自定义CToolStripMenuItem_Click(object sender, EventArgs e){viewcheck();大图标ToolStripMenuItem_Click(sender, e);大图标CToolStripMenuItem.Checked = true;大图标ToolStripMenuItem.Checked = true;}private void 选项OToolStripMenuItem_Click(object sender, EventArgs e){viewcheck();this.listView1.View = View.SmallIcon;小图标OToolStripMenuItem.Checked = true;小图标ToolStripMenuItem.Checked = true;}private void 列表ToolStripMenuItem1_Click(object sender, EventArgs e){viewcheck();this.listView1.View = View.List;列表ToolStripMenuItem1.Checked = true;列表ToolStripMenuItem.Checked = true;}private void 详细信息ToolStripMenuItem_Click_1(object sender, EventArgs e) {viewcheck();this.listView1.View = View.Details;详细信息ToolStripMenuItem.Checked = true;详细信息ToolStripMenuItem1.Checked = true;}private void addressTB_TextChanged(object sender, EventArgs e){if (ls.Count > 1)//判断是否能后退在启用后退选项{toolStripButton2.Enabled = true;后退ToolStripMenuItem.Enabled = true;}if (addressTB.Text.EndsWith("\\"))//判断是否能向上一级在启用向上一级选项{toolStripButton1.Enabled = false;向上一级ToolStripMenuItem.Enabled = false;}else{toolStripButton1.Enabled = true;向上一级ToolStripMenuItem.Enabled = true;}}private void 后退ToolStripMenuItem_Click(object sender, EventArgs e) {ind--;showListView(ls[ind]);addressTB.Text = ls[ind];前进ToolStripMenuItem.Enabled = true;toolStripButton3.Enabled = true;if (ind == 0){后退ToolStripMenuItem.Enabled = false;toolStripButton2.Enabled = false;}}private void 前进ToolStripMenuItem_Click(object sender, EventArgs e) {ind++;showListView(ls[ind]);addressTB.Text = ls[ind];if (ind == ls.Count-1){前进ToolStripMenuItem.Enabled = false;toolStripButton3.Enabled = false;}}private void toolStripButton1_Click(object sender, EventArgs e){if (currentDir.Parent != null){ls.Add(currentDir.Parent.FullName);ind = ls.Count - 1;this.addressTB.Text = currentDir.Parent.FullName;showListView(currentDir.Parent.FullName);前进ToolStripMenuItem.Enabled = false;toolStripButton3.Enabled = false;}}private void toolStripButton3_Click(object sender, EventArgs e){前进ToolStripMenuItem_Click(sender, e);}private void 向上一级ToolStripMenuItem_Click(object sender, EventArgs e) {toolStripButton1_Click(sender, e);}private void sortcheck()//取消所有选定项{名称ToolStripMenuItem.Checked = false;大小ToolStripMenuItem.Checked = false;类型ToolStripMenuItem.Checked = false;创建时间ToolStripMenuItem.Checked = false;}private void 名称ToolStripMenuItem_Click(object sender, EventArgs e) {sortcheck();名称ToolStripMenuItem.Checked = true;sorter.SortColumn = 0;listView1.Sort();}private void 大小ToolStripMenuItem_Click(object sender, EventArgs e) {sortcheck();大小ToolStripMenuItem.Checked = true;sorter.SortColumn = 1;listView1.Sort();}private void 类型ToolStripMenuItem_Click(object sender, EventArgs e) {sortcheck();类型ToolStripMenuItem.Checked = true;sorter.SortColumn = 2;listView1.Sort();}private void 创建时间ToolStripMenuItem_Click(object sender, EventArgs e) {sortcheck();创建时间ToolStripMenuItem.Checked = true;sorter.SortColumn = 4;listView1.Sort();}private void 递增ToolStripMenuItem_Click(object sender, EventArgs e) {递增ToolStripMenuItem.Checked = true;递减ToolStripMenuItem.Checked = false;sorter.SortOrder = SortOrder.Ascending;listView1.Sort();}private void 递减ToolStripMenuItem_Click(object sender, EventArgs e) {递增ToolStripMenuItem.Checked = false;递减ToolStripMenuItem.Checked = true;sorter.SortOrder = SortOrder.Descending;listView1.Sort();}private void listView1_ColumnClick(object sender, ColumnClickEventArgs e) {if (e.Column == this.sorter.SortColumn){if (this.sorter.SortOrder == SortOrder.Ascending){this.sorter.SortOrder = SortOrder.Descending;递增ToolStripMenuItem.Checked = false;//同步菜单选项递减ToolStripMenuItem.Checked = true;}elseif (this.sorter.SortOrder == SortOrder.Descending){this.sorter.SortOrder = SortOrder.Ascending;递增ToolStripMenuItem.Checked = true;递减ToolStripMenuItem.Checked = false;}elsereturn;}else{this.sorter.SortColumn = e.Column;}sortcheck();if (e.Column == 0)//同步菜单排序选项名称ToolStripMenuItem.Checked = true;else if (e.Column == 1)大小ToolStripMenuItem.Checked = true;else if (e.Column == 2)类型ToolStripMenuItem.Checked = true;else if (e.Column == 4)创建时间ToolStripMenuItem.Checked = true;listView1.Sort();}private void 关闭ToolStripMenuItem_Click(object sender, EventArgs e){this.Close();}private void listView1_SelectedIndexChanged(object sender, EventArgs e){if (listView1.SelectedItems.Count == 0){toolStripStatusLabel2.Image = null;toolStripStatusLabel2.Text = "\n" + listView1.Items.Count + "个项目";}else if (listView1.SelectedItems.Count == 1){if (listView1.SelectedItems[0].ImageIndex != -1)toolStripStatusLabel2.Image = imageList2.Images[listView1.SelectedItems[0].ImageIndex];toolStripStatusLabel2.Text = listView1.SelectedItems[0].Text + " \n修改日期：" + listView1.SelectedItems[0].SubItems[4].Text;}else{toolStripStatusLabel2.Image = null;toolStripStatusLabel2.Text = "\n已选择" + listView1.SelectedItems.Count + "项";}if (listView1.SelectedIndices.Count !=0){剪切UToolStripButton.Enabled = true;复制CToolStripButton.Enabled = true;}else{剪切UToolStripButton.Enabled = false;复制CToolStripButton.Enabled = false;}}private void timer1_Tick(object sender, EventArgs e){toolStripStatusLabel1.Text = DateTime.Now.ToString();}private void 状态栏ToolStripMenuItem_Click(object sender, EventArgs e) {if (状态栏ToolStripMenuItem.Checked == true){状态栏ToolStripMenuItem.Checked = false;statusStrip2.Visible = false;}else{状态栏ToolStripMenuItem.Checked = true;statusStrip2.Visible = true;}}private string filenum(string filename){string nums = "";int num = 1;while (true)//判断路径下是否已存在文件否则加上序号标签{if (File.Exists(filename.Insert(stIndexOf("."), nums + ""))){num++;nums = "(" + num + ")";}else{filename = filename.Insert(stIndexOf("."), nums + "");break;}}return filename;}private string directorynum(string directoryname){string nums = "";int num = 1;while (true)//判断路径下是否已存在该文件夹否则加上序号标签{if (Directory.Exists(directoryname + nums)){num++;nums = "(" + num + ")";}else{directoryname = directoryname + nums;break;}}return directoryname;}private void 关于AToolStripMenuItem_Click(object sender, EventArgs e){AboutBox1 ab = new AboutBox1();ab.Show();}private void listView1_DragDrop(object sender, DragEventArgs e){ListViewItem draggedItem = (ListViewItem)e.Data.GetData(typeof(ListViewItem));Point ptScreen = new Point(e.X, e.Y);Point pt = listView1.PointToClient(ptScreen);ListViewItem TargetItem = listView1.GetItemAt(pt.X, pt.Y);//拖动的项将放置于该项之前if (TargetItem.ToolTipText.Equals(draggedItem.ToolTipText))return;if (null != TargetItem && TargetItem.Tag.Equals("0")){if (draggedItem.Tag.Equals("0")){if (!Directory.Exists(TargetItem.ToolTipText + "\\" + draggedItem.Text)){CopyDirectory(draggedItem.ToolTipText, TargetItem.ToolTipText + "\\" + draggedItem.Text);Directory.Delete(draggedItem.ToolTipText, true);listView1.Items.Remove(draggedItem);}elseMessageBox.Show("该目录下已存在同名文件夹", "操作失败", MessageBoxButtons.OK, MessageBoxIcon.Warning);}else{if (!File.Exists(TargetItem.ToolTipText + "\\" + draggedItem.Text)){File.Move(draggedItem.ToolTipText, TargetItem.ToolTipText + "\\" + draggedItem.Text);listView1.Items.Remove(draggedItem);}elseMessageBox.Show("该目录下已存在同名文件", "操作失败", MessageBoxButtons.OK, MessageBoxIcon.Warning);}}}private void listView1_DragEnter(object sender, DragEventArgs e){e.Effect = e.AllowedEffect;}private void listView1_ItemDrag(object sender, ItemDragEventArgs e){listView1.DoDragDrop(e.Item, DragDropEffects.Move);}private void listView1_DragOver(object sender, DragEventArgs e){Point ptScreen = new Point(e.X, e.Y);Point pt = listView1.PointToClient(ptScreen);ListViewItem item = listView1.GetItemAt(pt.X, pt.Y);if (listView1.SelectedItems.Count != 0)foreach (ListViewItem titem in listView1.SelectedItems)titem.Selected = false;if (item != null && item.Tag.Equals("0")){item.Selected = true;。

操作系统文件管理实验报告

操作系统文件管理实验报告

操作系统文件管理实验报告操作系统文件管理实验报告一、实验目的操作系统是计算机系统中的核心软件之一，负责管理计算机硬件资源和提供用户与计算机硬件之间的接口。

文件管理是操作系统的重要功能之一，它涉及到文件的创建、读取、写入、删除等操作。

本次实验旨在通过编写简单的文件管理程序，加深对操作系统文件管理机制的理解。

二、实验环境本次实验使用C语言编写，运行在Linux操作系统上。

实验过程中使用了gcc 编译器和Linux系统提供的文件管理函数。

三、实验内容1. 文件的创建在操作系统中，文件是存储在存储介质上的数据集合。

文件的创建是指在存储介质上分配一块空间，并为其分配一个唯一的文件名。

在本次实验中，我们使用了Linux系统提供的open函数来创建文件。

open函数接受两个参数，第一个参数是文件名，第二个参数是文件的打开模式。

通过调用open函数，我们可以在指定的路径下创建一个文件。

2. 文件的读取和写入文件的读取和写入是文件管理的核心操作。

在本次实验中，我们使用了Linux 系统提供的read和write函数来实现文件的读取和写入。

read函数接受三个参数，第一个参数是文件描述符，第二个参数是存储读取数据的缓冲区，第三个参数是要读取的数据的长度。

write函数也接受三个参数，第一个参数是文件描述符，第二个参数是要写入的数据的缓冲区，第三个参数是要写入的数据的长度。

通过调用read和write函数，我们可以实现对文件的读取和写入操作。

3. 文件的删除文件的删除是指在存储介质上释放文件占用的空间，并删除文件的相关信息。

在本次实验中，我们使用了Linux系统提供的unlink函数来删除文件。

unlink函数接受一个参数，即要删除的文件名。

通过调用unlink函数，我们可以删除指定的文件。

四、实验步骤1. 创建文件首先，我们使用open函数创建一个文件。

在调用open函数时，需要指定文件的路径和文件的打开模式。

文件的路径可以是绝对路径或相对路径，文件的打开模式可以是只读、只写、读写等。

文件管理系统源代码

文件管理系统源代码

文件管理系统一、实验目的通过设计一个多用户文件系统，了解操作系统中文件的组织与管理，熟悉文件管理所用的数据结构，加深对文件系统内部功能实现过程的理解。

二、实验内容1．用C语言或C++语言设计一个最多包括N个用户的多用户文件系统，约定每个用户最多保存M个文件。

同时限制一个用户在进入系统后，最多打开L个文件。

2．系统应具备一定的健壮性。

即能够检查用户所输入命令的正确性，出错时显示出必要的信息。

另外，对文件需设置必要的保护措施。

3．文件目录结构采用两级目录结构：主文件目录和用户文件目录#include"io.h"#include"conio.h"#include"stdio.h"#include"stdlib.h"#include"malloc.h"#include"string.h"#include"ctype.h"#define N 30 /*用户数*/#define M 20 /*一个用户可保存M个文件*/#define L 5 /*用户只能一次打开L个文件*/typedef struct MFD /*主文件目录*/{char username[100];char password[100];FILE fp; /*文件指针*/}MFD;///////////typedef struct UFD /*用户文件目录*/{char filename[256];char protect; /*保护码*/int length; /*文件长度*/}UFD;//////////typedef struct OFD /*打开文件目录*/{char filename[256];char opencode; /*打开保护码*/int fp; /*读写指针*/}OFD;//////////typedef struct COMM /*命令串*/{char string[256]; /*命令*/struct COMM *next;/*后继指针*/}COMM;////////////MFD mainfd[N]; /*主文件目录数组*/UFD userfd[M]; /*用户文件目录数组*/OFD openfd[L]; /*打开文件目录数组*/////////COMM*command; /*命令串指针*/char username[10];int usernum,savenum,opennum;int workfile;void init();void init_ufd(char *username);/*初始化用户文件目录*/ void mesg(char *str); /*消息*/char *getpass(); /*设置口令函数声明*/ char *getuser(); /*设置用户函数声明*/ COMM *readcommand(); /*读命令串函数声明*/ void login(); /*用户登录*/void logout(); /*用户注销*/void setpass(); /*设置口令*/void create(); /*创建文件*/void mydelete(); /*删除文件*/void myread(); /*读文件*/void myopen(); /*打开文件*/void myclose(); /*关闭文件*/void mywrite(); /*写文件*/void help(); /*帮助*/void dir(); /*列文件目录*/void mycopy(); /*复制文件*/void myrename(); /*重命名文件名*//////////////void main(){init();for(;;){readcommand();if(strcmp(command->string,"create")==0)create();else if(strcmp(command->string,"delete")==0)mydelete();else if(strcmp(command->string,"open")==0)myopen();else if(strcmp(command->string,"close")==0)myclose();else if(strcmp(command->string,"read")==0)myread();else if(strcmp(command->string,"write")==0)mywrite();else if(strcmp(command->string,"copy")==0)mycopy();else if(strcmp(command->string,"rename")==0)myrename();else if(strcmp(command->string,"login")==0)login();else if(strcmp(command->string,"setpass")==0)setpass();else if(strcmp(command->string,"logout")==0)logout();else if(strcmp(command->string,"help")==0)help();else if(strcmp(command->string,"dir")==0)dir();else if(strcmp(command->string,"exit")==0)break;elsemesg("Bad command!");}}///////////////////void init(){FILE *fp;char tempname[20],temppass[20];int i=0;usernum=0;savenum=0;opennum=0;strcpy(username,"");if((fp=fopen("mainfile.txt","r"))!=NULL){while(!feof(fp)){strcpy(tempname,"");fgets(tempname,20,fp);if(strcmp(tempname,"")!=0){fgets(temppass,20,fp);tempname[strlen(tempname)-1]='\0';temppass[strlen(tempname)-1]='\0';strcpy(mainfd[usernum].username,tempname);strcpy(mainfd[usernum].password,tempname);usernum++;}}fclose(fp);}}///////////////////////void init_ufd(char *username)/*初始化用户文件目录*/{FILE *fp;char tempfile[100],tempprot;int templength;savenum=0;opennum=0;workfile=-1;if((fp=fopen(username,"w+"))!=NULL){while(!feof(fp)){strcpy(tempfile,"");fgets(tempfile,50,fp);if(strcmp(tempfile,"")!=0){fscanf(fp,"%c",&tempprot);fscanf(fp,"%d",&templength);tempfile[strlen(tempfile)-1]='\0';strcpy(userfd[savenum].filename,tempfile);userfd[savenum].protect=tempprot;userfd[savenum].length=templength;savenum++;fgets(tempfile,50,fp);}}}fclose(fp);}////////////////////void mesg(char *str){printf("\n %s\n",str);}////////////////////////////char *getuser(){char username[20];char temp;int i;username[0]='\0';for(i=0;i<10;){while(!kbhit());temp=getch();if(isalnum(temp)||temp=='_'||temp==13){username[i]=temp;if(username[i]==13){username[i]='\0';break;}putchar(temp);i++;username[i]='\0';}}return(username);}///////////////////char *getpass(){char password[20];char temp;int i;password[0]='\0';for(i=0;i<10;){while(!kbhit());temp=getch();if(isalnum(temp)||temp=='_'||temp==13){password[i]=temp;if(password[i]==13){password[i]='\0';break;}putchar('*');i++;password[i]='\0';}}return(password);}///////////////COMM *readcommand(){char temp[256];char line[256];int i,end;COMM *newp,*p;command=NULL;strcpy(line,"");while(strcmp(line,"")==0){printf("\nc:\\>");gets(line);}for(i=0;i<=strlen(line);i++){if(line[i]==' ')i++;end=0;while(line[i]!='\0'&&line[i]!=' '){temp[end]=line[i];end++;i++;}if(end>0){temp[end]='\0';newp=(COMM *)malloc(sizeof(COMM *));strcpy(newp->string,temp);newp->next=NULL;if(command==NULL)command=newp;else{p=command;while(p->next!=NULL)p=p->next;p->next=newp;}}}p=command;return(command);}/////////////////////////////void login() /*用户注册*/{FILE *fp;int i;char password[20],confirm[20],tempname[20];if(command->next==NULL){printf("\n User Name:");strcpy(tempname,getuser());}else if(command->next->next!=NULL){mesg("Too many parameters!");return;}elsestrcpy(tempname,command->next->string);for(i=0;i<usernum;i++)if(strcmp(mainfd[i].username,tempname)==0)break; /*从mainfd表中查找要注册的用户*/ if(i>=usernum) /*新用户*/{printf("\n new user account,enter your password twice!");printf("\n Password:");strcpy(password,getpass());/*输入口令且返回之*/printf("\n Password:");strcpy(confirm,getpass()); /*第二次输入口令*/if(strcmp(password,confirm)==0)/*用户数不能超过N*/{if(usernum>=N)mesg("Create new account false!number of user asscount limited.\n login fasle!");else{strcpy(mainfd[usernum].username,tempname);/*把新用户和口令填入mainfd中*/strcpy(mainfd[usernum].password,password);usernum++;strcpy(username,tempname);mesg("Create a new user!\n login success!");init_ufd(username); /*初始化用户文件目录*/fp=fopen("mainfile.txt","w+"); /*把新用户填入mainfile.txt文件中*/for(i=0;i<usernum;i++){fputs(mainfd[i].username,fp);fputs("\n",fp);fputs(mainfd[i].password,fp);fputs("\n",fp);}fclose(fp);}}else{mesg("Create new account false! Error password.");mesg("login false!");}}else{printf("\n Password:");strcpy(password,getpass());if(strcmp(mainfd[i].password,password)!=0)mesg("Login false! Error password.");else{mesg("Login success!");strcpy(username,tempname);init_ufd(username);}}}/////////////////////////void logout() /*用户注销*/{if(command->next!=NULL)mesg("Too many parameters!");else if(strcmp(username,"")==0)mesg("No user login!");else{strcpy(username,"");opennum=0;savenum=0;workfile=-1;mesg("User logout!");}}////////////////////void setpass() /*修改口令*/{int i=0;FILE *fp;char oldpass[20],newpass[20],confirm[20];if(strcmp(username,"")==0)mesg("No user login!");else{printf("\n Old password:");strcpy(oldpass,getpass());for(int i=0;i<usernum;i++){if(strcmp(mainfd[i].username,username)==0)break;}if(strcmp(mainfd[i].password,oldpass)!=0)mesg("Old password error!");else{printf("\n New password:");strcpy(newpass,getpass());printf("\n Confirm password:");strcpy(confirm,getpass());if(strcmp(newpass,confirm)!=0)mesg("Password not change! confirm different.");else{strcpy(mainfd[i].password,newpass);mesg(" Password change !");fp=fopen("mainfile.txt","w+");for(i=0;i<usernum;i++){fputs(mainfd[i].username,fp);fputs("\n",fp);fputs(mainfd[i].password,fp);fputs("\n",fp);}fclose(fp);}}}}////////////////void create(){int i=0;FILE *fp;if(strcmp(username,"")==0)mesg("No user lgoin!");else if(command->next==NULL)mesg("Too few parametets!");else if(command->next->next!=NULL)mesg("Too many parameters!");else{for(i=0;i<savenum;i++){if(strcmp(userfd[i].filename,command->next->string)==0)break;}if(i<savenum)mesg("Error! the file already existed!");else if(savenum>=M)mesg("Error! connot create file! number of files limited!");else{strcpy(userfd[savenum].filename,command->next->string);userfd[i].protect='r';userfd[i].length=rand();savenum++;mesg("Create file success!");fp=fopen(username,"w+");for(i=0;i<savenum;i++){fputs(userfd[i].filename,fp);fputs("\n",fp);fprintf(fp,"%c\n%d\n",userfd[i].protect,userfd[i].length);}fclose(fp);}}}/////////////////void mydelete() /*删除*/{int i=0;int tempsave=0;FILE *fp;if(strcmp(username,"")==0)mesg("No user lgoin!");else if(command->next==NULL)mesg("Too few parametets!");else if(command->next->next!=NULL)mesg("Too many parameters!");else{for(i=0;i<savenum;i++){if(strcmp(userfd[i].filename,command->next->string)==0)break;}if(i>=savenum)mesg("Error! the file not existed!");else{tempsave=i;for(i=0;i<opennum;i++){if(strcmp(command->next->string,openfd[i].filename)==0)break;}if(i>=opennum)mesg("File not open");////////////////////////////////////////////else{if(tempsave==savenum-1)savenum--;else{for(;tempsave<savenum-1;tempsave++){strcpy(userfd[tempsave].filename,userfd[tempsave+1].filename);userfd[tempsave].protect=userfd[tempsave+1].protect;userfd[tempsave].length=userfd[tempsave+1].length;}savenum--;}mesg("Delete file success!");fp=fopen(username,"w+");for(i=0;i<savenum;i++){fputs(userfd[i].filename,fp);fputs("\n",fp);fprintf(fp,"%c\n%d\n",userfd[i].protect,userfd[i].length);}fclose(fp);}}}}//////////////////void myread() /*读*/{int i=0;int tempsave=0;char tempfile[100];if(strcmp(username,"")==0)mesg("No user lgoin!");else if(command->next==NULL)mesg("Too few parametets!");else if(command->next->next!=NULL)mesg("Too many parameters!");elsestrcpy(tempfile,command->next->string);for(i=0;i<savenum;i++){if(strcmp(tempfile,userfd[i].filename)==0)break;}if(i>=savenum)mesg("File not existed!");else{tempsave=i;for(i=0;i<opennum;i++){if(strcmp(tempfile,openfd[i].filename)==0)break;}if(i>=opennum)mesg("File not opened");else{if(userfd[tempsave].length<1000)printf("\n The file size is %d KB",userfd[tempsave].length);else if(userfd[tempsave].length==1000)printf("\n The file size is 1000 KB");elseprintf("\n The file size is %d,%d KB",userfd[tempsave].length/1000,userfd[tempsave].length%1000);mesg("File read");}}}}/////////////////void myopen()/*打开*/{int i=0;int type=0;char tempcode;char tempfile[100];if(strcmp(username,"")==0)mesg("No user login!");else if(command->next==NULL)mesg("Too few parameters!");{strcpy(tempfile,"");tempcode='r';if(strcmp(command->next->string,"/r")==0){tempcode='r';type=1;}else if(strcmp(command->next->string,"/w")==0){tempcode='w';type=1;}else if(strcmp(command->next->string,"/d")==0){tempcode='d';type=1;}else if(command->next->string[0]=='/')mesg("Error! /r/w/d request!");else if(command->next->next!=NULL)mesg("Too many parameters!");elsestrcpy(tempfile,command->next->string);if(type==1){if(command->next->next!=NULL){if(command->next->next->next!=NULL)mesg("Too many parameters!");elsestrcpy(tempfile,command->next->next->string);}elsemesg("Too few parameters!");}if(strcmp(tempfile,"")){for(i=0;i<savenum;i++){if(strcmp(tempfile,userfd[i].filename)==0)break;}if(i>=savenum)mesg("File not existed!");else{for(i=0;i<opennum;i++){if(strcmp(tempfile,openfd[i].filename)==0)break;}if(i<opennum){mesg("File already opened!");if(openfd[i].opencode!=tempcode){openfd[i].opencode=tempcode;mesg("File permission changed!");}}else if(opennum>=L){mesg("Error! connot open file! number of opened files limited!");}else{strcpy(openfd[opennum].filename,tempfile);openfd[opennum].opencode=tempcode;workfile=opennum;opennum++;mesg("File open success!");}}}}}///////////////////////void myclose()/*关闭*/{int i=0;int tempsave=0;char tempfile[100];if(strcmp(username,"")==0)mesg("No user lgoin!");else if(command->next==NULL)mesg("Too few parametets!");else if(command->next->next!=NULL)mesg("Too many parameters!");else{strcpy(tempfile,command->next->string);for(i=0;i<savenum;i++){if(strcmp(tempfile,userfd[i].filename)==0)break;}if(i>=savenum)mesg("File not existed!");else{for(i=0;i<opennum;i++){if(strcmp(tempfile,openfd[i].filename)==0)break;}if(i>=opennum)mesg("File not opened");else{if(i==opennum-1)opennum--;else{for(;i<opennum-1;i++){strcpy(openfd[i].filename,openfd[i+1].filename);openfd[i].opencode=openfd[i+1].opencode;}opennum--;}mesg("Close file success!");}}}}/////////////////////////void mywrite()/*写*/{int i=0;int tempsave=0;char tempfile[100];if(strcmp(username,"")==0)mesg("No user lgoin!");else if(command->next==NULL)mesg("Too few parametets!");else if(command->next->next!=NULL)mesg("Too many parameters!");else{strcpy(tempfile,command->next->string);for(i=0;i<savenum;i++){if(strcmp(tempfile,userfd[i].filename)==0)break;}if(i>=savenum)mesg("File not existed!");else{tempsave=i;for(i=0;i<opennum;i++){if(strcmp(tempfile,openfd[i].filename)==0)break;}if(i>=opennum)mesg("File not opened");else{mesg("File write");int tt=rand();if(userfd[tempsave].length<=1000)printf("\n The file size from %d KB to %d KB",userfd[tempsave].length,userfd[tempsave].length+tt);/* else if(userfd[tempsave].lenght=1000)printf("\n The file size from 1000 KB");*/elseprintf("\n The file size form %d,%d KB to %d,%d KB",userfd[tempsave].length/1000,userfd[tempsave].length%1000,userfd[tempsave].length+tt/10 00,userfd[tempsave].length+tt%1000);userfd[tempsave].length=userfd[tempsave].length+tt;}}}}///////////////////void help()/*帮助*/{static char *cmd[]={"login","setpass","logout","create","open","read","write","close","delete","dir","help","exit","copy","rename"};static char *cmdhlp[]={"aommand format: login [<username>]","command format:setpass","command format:logout","command format:create <filename>","command format:open [/r/w/d] <filename>","command format:read <filename>","command format:write <filename>","command format:close <filename>","command format:delete <filename>","command format:dir [/u/o/f]","command format:help [<command>]","command format:exit","command format:copy <source filename> <destination filename>","command format:rename <old filename> <new filename>"};static char *detail[]={"explain:user login in the file system.","explain:modify the user password.","explain:user logout the file system.","explain:creat a new file.","explain:/r -- read only [deflaut]\n\t /w -- list opened files \n\t /d --read,modify and delete.","explain:read the file.","explain:modify the file.","explain:close the file.","explain:delete the file.","explain:/u -- list the user account\n\t /0 -- list opened files\n\t /f --list user file[deflaut].","explain:<command> -- list the command detail format and explain.\n\t [deflaut] list the command.","explain:exit from the file sysytem.","explain:copy from one file to another file.","explain:modify the file name."};int helpnum=14;int i=0;if(command->next==NULL){mesg(cmdhlp[10]);mesg(detail[10]);mesg("step 1: login");printf("\t if old user then login,if user not exist then create new user");mesg("step 2: open the file for read(/r),write(/w)or delete(/d)");printf("\t you can open one or more files.one command can open one file");mesg("step 3: read,write or delete some one file");printf("\t you can operate one of the opened files.one command can open one file");mesg("step 4: close the open file");printf("\t you can close one of the opened files.one command can open one file");mesg("step 5: user logout.close all the user opened files");printf("\n command list:");for(i=0;i<helpnum;i++){if(i%4==0)printf("\n");printf(" %-10s",cmd[i]);}}else if(command->next->next!=NULL)mesg("Too many parameters!");else{for(i=0;i<helpnum;i++){if(strcmp(command->next->string,cmd[i])==0)break;}if(i>=helpnum)mesg("the command not existed!");else{mesg(cmdhlp[i]);mesg(detail[i]);}}}//////////////////////void dir()/*列目录文件*/{int i=0;int type=0;char tempcode;if(strcmp(username,"")==0)mesg("No user login!");else{if(command->next==NULL){tempcode='f';}else{if(strcmp(command->next->string,"/u")==0){tempcode='u';}else if(strcmp(command->next->string,"/o")==0){tempcode='o';}else if(strcmp(command->next->string,"/f")==0){tempcode='f';}else if(command->next->string[0]=='/')mesg("Error! /u/o/f request!");else if(command->next->next!=NULL)mesg("Too many parameters!");}if('u'==tempcode){printf("list the user account\n");printf("usename\n");for(i=0;i<usernum;i++){printf("%s\n",mainfd[i].username);}}else if('f'==tempcode){printf("list opened files\n");printf("filename length protect\n");for(i=0;i<savenum;i++){printf("%s%s%d%s%s%c\n",userfd[i].filename," ",userfd[i].length,"KB"," ",userfd[i].protect);}}else if('o'==tempcode){printf("list user files\n");printf("filename opencode\n");for(i=0;i<opennum;i++){printf("%s%s%c\n",openfd[i].filename," ",openfd[i].opencode);}}}}/////////////////////////void mycopy()/*复制*/{char sourfile[256],destfile[256];int i=0,j=0,temp=0;FILE *fp;char tempchar;if(strcmp(username,"")==0)mesg("No user lgoin!");else if(command->next==NULL)mesg("Too few parametets!");else if(command->next->next==NULL)mesg("Too few parametets!");else if(command->next->next->next!=NULL)mesg("Too many parameters!");else{strcpy(sourfile,command->next->string);strcpy(destfile,command->next->next->string);for(i=0;i<savenum;i++){if(strcmp(sourfile,userfd[i].filename)==0)break;}temp=i;if(i>=savenum)printf("\n the source file not eixsted!");else{for(i=0;i<opennum;i++){if(strcmp(sourfile,openfd[i].filename)==0)break;}if(i>=opennum)printf("\n the source file not opened!");else{for(j=0;j<opennum;j++){if(strcmp(destfile,openfd[i].filename)==0)break;}if(j<opennum)mesg("Error! the destination file opened,you must close it first.");else{for(j=0;j<savenum;j++){if(strcmp(destfile,userfd[i].filename)==0)break;}if(j<savenum){mesg("Warning! the destination file exist!");printf("\n Are you sure to recover if ? [Y/N]");while(!kbhit());tempchar=getch();if(tempchar=='N'||tempchar=='n')mesg("Cancel! file not copy.");else if(tempchar=='Y'||tempchar=='y'){mesg("File copy success!file recovered!");userfd[j].length=userfd[i].length;userfd[j].protect=userfd[i].protect;fp=fopen(username,"w+");for(i=0;i<savenum;i++){fputs(userfd[i].filename,fp);fputs("\n",fp);fprintf(fp,"%C\n%d\n",userfd[i].protect,userfd[i].length);}fclose(fp);}}else if(savenum>=M)mesg("copy false! file total limited.");else{strcpy(userfd[savenum].filename,destfile);userfd[savenum].length=userfd[temp].length;userfd[savenum].protect=userfd[temp].protect;savenum++;fp=fopen(username,"w+");for(i=0;i<savenum;i++){fputs(userfd[i].filename,fp);fputs("\n",fp);fprintf(fp,"%c\n%d\n",userfd[i].protect,userfd[i].length);}fclose(fp);mesg("File copy success!");}}}}}}///////////////////////void myrename()/*文件重命名*/{char oldfile[256],newfile[256];int i=0,temp=0;if(strcmp(username,"")==0)mesg("No user lgoin!");else if(command->next==NULL)mesg("Too few parametets!");else if(command->next->next==NULL)mesg("Too few parametets!");else if(command->next->next->next!=NULL)mesg("Too many parameters!");else{strcpy(oldfile,command->next->string);strcpy(newfile,command->next->next->string);for(i=0;i<savenum;i++){if(strcmp(oldfile,userfd[i].filename)==0)break;}temp=i;if(temp>=savenum)printf("\n the source file not eixsted!");else if(temp!=i&&i<savenum){printf("\n newfile and the existing files is the same name, please re-naming!");}else{for(i=0;i<opennum;i++){if(strcmp(oldfile,openfd[i].filename)==0)break;}if(i>=opennum)printf("\n the source file not opened!");else if(strcmp(oldfile,newfile)==0){printf("Rename false! oldfile and newfile can not be the same.");}else{strcpy(openfd[i].filename,newfile);strcpy(userfd[temp].filename,newfile);mesg("Rename file success!\n");}}}}。

简单的文档管理C语言源代码

简单的文档管理C语言源代码

#include<stdio.h>#include<string.h>#include<stdlib.h>#define N 10struct library{int num;char book_name[30];char writer[30];char sort_num[3];char pub_company[30];char pub_time[30];char prise[30];};typedef struct library LIB; struct history{char his_time[30];char his_name[30];}ANJIAN={"2008","许霆"};LIB lib[N];int all=0;int menu(void);void history(void);void book(void);int bookmenu(void);void write(void);void input(void);void search(void);void xiugai(void);void output(void);main(){for(;;){switch(menu()){case 1:history();break;case 2:book();break;case 3:write();break;case 0:exit(1);break;}}}int menu(void){char m[3];int n; printf(" ************************欢迎进入法院文档管理系统******************************\n\n");printf("\t欢迎使用本院文档管理系统，本系统将为您提供历史案件信息查询，工作学习书籍查阅管理。