c++操作系统 仿linux 二级文件管理系统

实现了操作系统的管理员与用户登录权限的分离，还有文件夹的增删改查文件的增删改查，模拟linux。

main.cpp#include <iostream>#include <string>#include "BFSystem.h"using namespace std;FBSystem *g_FBSystem = NULL;int main(){int a;char g_UserName[256]; //用户名char g_PassWord[256]; //密码g_FBSystem = new FBSystem();//用户验证cout<<"用户名: ";cin>>g_UserName;cout<<"密码: ";char c,m[] = "???";int i;for(i=0;i<3;i++){doc = getch();while(c<'0'||c>'9');m[i] = c;putchar('*');}while(1) //回车继续{c = getch();if(c==13)break;}if(g_FBSystem->Login(g_UserName,m)){cout<<endl;cout<<"登陆成功!"<<endl;cout<<"欢迎:";cout<<g_UserName<<endl;}else{ cout<<endl;cout<<"无此用户:"<<g_UserName<<"输入任意键退出!"<<endl;char exit;cin>>exit;return 0;}//系统初始化g_FBSystem->Initialize();char time[32];strcpy(time,g_FBSystem->GetTime()); //将后者复制给前者printf("时间:%s\n",time);g_FBSystem->ShowMenu();while (1){memset(g_FBSystem->m_CommandTemp,NULL,32); //将g_FBSystem->m_CommandTemp全部变成nullcin.sync(); //清除cin缓冲区for (int i=0; i<10;i++){if(g_FBSystem->m_CurPath[i][0]!=0)cout<<g_FBSystem->m_CurPath[i];}cin>>g_FBSystem->m_CommandTemp;int commandID = g_FBSystem->SeekCommand(g_FBSystem->m_CommandTemp);char name[256];char name1[256];char text[256];memset(text,0,256);switch(commandID){case 0:cin>>name;g_FBSystem->CreateDirectory(name);break;case 1:cin>>name;g_FBSystem->DeleteDirectory(name);break;case 2:cin>>name;cin>>name1;g_FBSystem->RenameDirectory(name, name1);break;case 3:cin>>name;g_FBSystem->OpenDirectory(name);break;case 4:cin>>name;g_FBSystem->CreateFile(name);break;case 5:cin>>name;g_FBSystem->DeleteFile(name);break;case 6:cin>>name;cin>>name1;g_FBSystem->RenameFile(name, name1);break;case 7:g_FBSystem->Format();break;case 8:cin>>name;g_FBSystem->Read(name);break;case 9:cin>>name;g_FBSystem->Write(name);break;case 10:g_FBSystem->ShowMenu();break;case 11:g_FBSystem->ShowAllFiles();break;case 12:g_FBSystem->ReturnPreDirectory();break;case 13:cin>>name;g_FBSystem->Inquiry(name);break;case 14:cin>>name[0];g_FBSystem->FuzzyInquiry(name[0]);break;case 15:g_FBSystem->Exit();return 0;break;default:break;}}return 0;}FBSystem.cpp#include "BFSystem.h"FBSystem::FBSystem(){m_NumOfObject = 0; //初始化对象数目为0strcpy(m_UserName1,"yjz");strcpy(m_Password1,"123");strcpy(m_UserName2,"jj");strcpy(m_Password2,"123");strcpy(m_Command[0],"mkdir"); //初始化命令行strcpy(m_Command[1],"mddir");strcpy(m_Command[2],"rndir");strcpy(m_Command[3],"cd");strcpy(m_Command[4],"mkfile");strcpy(m_Command[5],"mdfile");strcpy(m_Command[6],"rnfile");strcpy(m_Command[7],"format");strcpy(m_Command[8],"read");strcpy(m_Command[9],"write");strcpy(m_Command[10],"menu");strcpy(m_Command[11],"dir");strcpy(m_Command[12],"cd..");strcpy(m_Command[13],"query");strcpy(m_Command[14],"fquery");strcpy(m_Command[15],"exit");memset(m_CommandTemp, NULL, 32);memset(m_CurPath, NULL, 2560);strcpy(m_CurPath[0], "root\\");this->m_CurPathFatherID = 0;this->m_CurPathID = 0;this->m_CurMaxID = 0;this->m_CurFaID = 0;this->m_pow=0;}bool FBSystem::Login(char* _userName, char* _password){if (strcmp(_userName, m_UserName1)==0&&strcmp(_password, m_Password1)==0){m_pow=1;return true;}if (strcmp(_userName, m_UserName2)==0&&strcmp(_password, m_Password2)==0){m_pow=0;return true;}return false;}void FBSystem::Initialize(){FILE *m_FilePoint=fopen("system","rb"); //以只读方式打开系统文件if(m_FilePoint==NULL){printf("无法打开:");printf("system");}fseek(m_FilePoint,0,0); //定位文件指针到文件起始位置int num;fread(&num,4,1,m_FilePoint);m_NumOfObject = num;if (num>0){fseek(m_FilePoint, 4, SEEK_SET); //相对于文件起始点第5个字节的位置for (int i = 0; i<m_NumOfObject; i++) //读取文件中的信息，并压入列表中{FBObject *temp = new FBObject();fread(temp, sizeof(FBObject), 1, m_FilePoint);this->m_ObjectList.push_back(*temp);}}fclose(m_FilePoint);}bool FBSystem::CreateDirectory(char* _dirName){for(this->m_ObjectIterator = m_ObjectList.begin();m_ObjectIterator!= m_ObjectList.end();++m_ObjectIterator){if (!strcmp(m_ObjectIterator->name, _dirName) && m_ObjectIterator->type == 0){cout<<"目录名重复！"<<endl;return false;}}FBObject *temp = new FBObject();char time[256];strcpy(time,GetTime());temp->fatherID = this->m_CurPathID;strcpy(temp->lastTime,time);strcpy(temp->name,_dirName);temp->objectID = GetMaxID();temp->size = 0;temp->type = 0; //0为目录this->m_ObjectList.push_back(*temp);return true;}bool FBSystem::DeleteDirectory(char* _dirName){for(this->m_ObjectIterator = m_ObjectList.begin();m_ObjectIterator!= m_ObjectList.end();++m_ObjectIterator){if (!strcmp(m_ObjectIterator->name, _dirName) && m_ObjectIterator->type ==0){//检查该目录是否为非空list<FBObject>::iterator temp;for(temp = m_ObjectList.begin();temp!= m_ObjectList.end();++temp){if (temp->fatherID == m_ObjectIterator->objectID){cout<<"不能删除非空的目录!"<<endl;return false;}}//空则可以删除m_ObjectIterator = m_ObjectList.erase(m_ObjectIterator);return true;}}return true;}bool FBSystem::RenameDirectory(char* _srcName, char* _descName){for(this->m_ObjectIterator = m_ObjectList.begin();m_ObjectIterator!= m_ObjectList.end();++m_ObjectIterator){if (!strcmp(m_ObjectIterator->name, _srcName) && m_ObjectIterator->type == 0){strcpy(m_ObjectIterator->name, _descName);return true;}}return true;}bool FBSystem::OpenDirectory(char* _name){for(this->m_ObjectIterator = m_ObjectList.begin();m_ObjectIterator!= m_ObjectList.end();++m_ObjectIterator){//存在该名称且类型为目录if (!strcmp(m_ObjectIterator->name, _name) && m_ObjectIterator->type==0){int temp =0;for (int i=0; i<10;i++){if(m_CurPath[i][0]==0){temp = i;break;}}strcat(m_CurPath[temp],_name);strcat(m_CurPath[temp],"\\");m_CurPathFatherID = m_CurPathID;m_CurPathID = m_ObjectIterator->objectID;return true;}}if (!strcmp("root", _name)){memset(m_CurPath, NULL, 2560);strcpy(m_CurPath[0], "root\\");m_CurPathFatherID = 0;m_CurPathID = 0;return true;}cout<<"错误操作!"<<endl;return false;}bool FBSystem::CreateFile(char* _fileName){for(this->m_ObjectIterator = m_ObjectList.begin();m_ObjectIterator!= m_ObjectList.end();++m_ObjectIterator){if (!strcmp(m_ObjectIterator->name, _fileName) && m_ObjectIterator->type ==1){cout<<"文件名重复!"<<endl;return false;}}FBObject *temp = new FBObject();char time[256];strcpy(time,GetTime());temp->fatherID = this->m_CurPathID;strcpy(temp->lastTime,time);strcpy(temp->name,_fileName);temp->objectID = GetMaxID();temp->size = 0;temp->type = 1; //0为目录this->m_ObjectList.push_back(*temp);FILE *p = fopen(_fileName,"w+");fclose(p);return true;}bool FBSystem::DeleteFile(char* _fileName){for(this->m_ObjectIterator = m_ObjectList.begin();m_ObjectIterator!= m_ObjectList.end();++m_ObjectIterator){if (!strcmp(m_ObjectIterator->name, _fileName) && m_ObjectIterator->type ==1){remove(m_ObjectIterator->name);m_ObjectIterator = m_ObjectList.erase(m_ObjectIterator);return true;}}return true;}bool FBSystem::RenameFile(char* _srcName, char* _descName){for(this->m_ObjectIterator = m_ObjectList.begin();m_ObjectIterator!= m_ObjectList.end();++m_ObjectIterator){if (!strcmp(m_ObjectIterator->name, _srcName) && m_ObjectIterator->type == 1){strcpy(m_ObjectIterator->name, _descName);rename(_srcName,_descName);return true;}}return true;}void FBSystem::Format(){for(this->m_ObjectIterator = m_ObjectList.begin();m_ObjectIterator!= m_ObjectList.end();++m_ObjectIterator){if(m_ObjectIterator->type == 1)remove(m_ObjectIterator->name);}m_ObjectList.clear();m_NumOfObject = 0; //初始化对象数目为0memset(m_CommandTemp, NULL, 32);memset(m_CurPath, NULL, 2560);strcpy(m_CurPath[0], "root\\");this->m_CurPathFatherID = 0;this->m_CurPathID = 0;this->m_CurMaxID = 0;}bool FBSystem::Read(char* _name){for(this->m_ObjectIterator = m_ObjectList.begin();m_ObjectIterator!= m_ObjectList.end();++m_ObjectIterator){if(!strcmp(_name,m_ObjectIterator->name) && m_ObjectIterator->type == 1&&m_ObjectIterator->fatherID == m_CurPathID){FILE *p = fopen(_name, "rb");if(p==NULL)return false;char *temp = new char[m_ObjectIterator->size];fread(temp, m_ObjectIterator->size, 1, p);temp[m_ObjectIterator->size] = '\0';cout<<temp<<endl;fclose(p);return true;}}cout<<"错误操作!"<<endl;return false;}bool FBSystem::Write(char* _name){for(this->m_ObjectIterator = m_ObjectList.begin();m_ObjectIterator!= m_ObjectList.end();++m_ObjectIterator){if(!strcmp(_name,m_ObjectIterator->name) && m_ObjectIterator->type == 1 &&m_ObjectIterator->fatherID == m_CurPathID){cout<<"Input:"<<endl;cin.sync();char ch[256];cin.get(ch,256);int size = 0;for (int i=0;i<256;i++){if(ch[i]==NULL){size = i;break;}}FILE *p = fopen(_name, "w+");fwrite(ch, size, 1, p);m_ObjectIterator->size = size;fclose(p);return true;}}cout<<"错误操作!"<<endl;return false;}bool FBSystem::ReturnPreDirectory(){for(this->m_ObjectIterator = m_ObjectList.begin();m_ObjectIterator!= m_ObjectList.end();++m_ObjectIterator){//如果上一层目录是根目录if (m_CurPathFatherID == 0){memset(m_CurPath, NULL, 2560);strcpy(m_CurPath[0], "root\\");m_CurPathID = 0;m_CurPathFatherID = 0;return true;}if(m_ObjectIterator->objectID == m_CurPathFatherID && m_ObjectIterator->type == 0){for (int i=0; i<10;i++){if(m_CurPath[i][0]==0){strcpy(m_CurPath[i-2], m_ObjectIterator->name);strcat(m_CurPath[i-2],"\\");memset(m_CurPath[i-1],NULL, 256);m_CurPathID = m_CurPathFatherID;m_CurPathFatherID = m_ObjectIterator->fatherID;return true;}}}}return true;}void FBSystem::ShowAllFiles(){printf("\t 名称\t 大小\t 类型\t 时间\n");for(this->m_ObjectIterator = m_ObjectList.begin();m_ObjectIterator!= m_ObjectList.end();++m_ObjectIterator){//遍历列表属于该目录的对象便显示其信息if(m_ObjectIterator->fatherID == m_CurPathID){cout<<"\t"<<setw(10)<<m_ObjectIterator->name;cout<<"\t"<<setw(8)<<m_ObjectIterator->size;if(m_ObjectIterator->type)cout<<"\t"<<setw(8)<<"文件";elsecout<<"\t"<<setw(8)<<"目录";char time[32];strcpy(time,m_ObjectIterator->lastTime);cout<<"\t"<<time<<endl;}}cout<<endl;}void FBSystem::ShowMenu(){cout<<"--------------------菜单----------------------------"<<endl;if(m_pow==0){cout<<"| 您的身份：游客|"<<endl;} if(m_pow==1){cout<<"| 您的身份：管理员|"<<endl;} if(m_pow==1){cout<<"| |"<<endl;cout<<"| 创建文件：mkfile [name] |"<<endl;cout<<"| 删除文件：mdfile [name] |"<<endl;cout<<"| 修改文件名字：rnfile [srcname] [descname] |"<<endl;}cout<<"| 读文件：read [name] |"<<endl;if(m_pow==1){cout<<"| 写文件：write [name] |"<<endl;cout<<"| 创建目录：mkdir [name] |"<<endl;cout<<"| 删除目录：mddir [name] |"<<endl;cout<<"| 修改目录名字：rndir [srcname] [descname] |"<<endl;cout<<"| 格式化：format |"<<endl;}cout<<"| 进入目录：cd [name] |"<<endl;cout<<"| 显示菜单：menu |"<<endl;cout<<"|显示所有文件信息：dir |"<<endl;cout<<"| 返回上一层目录：cd.. |"<<endl;cout<<"| 查询文件：query [name] |"<<endl;cout<<"| 首字母查询：fquery [header] |"<<endl;cout<<"| 退出(必做)：exit |"<<endl;cout<<"| |"<<endl;cout<<"----------------------------------------------------"<<endl;}bool FBSystem::Inquiry(char* _name){printf("\t 名称\t 大小\t 类型\t 时间\n");for(this->m_ObjectIterator = m_ObjectList.begin();m_ObjectIterator!= m_ObjectList.end();++m_ObjectIterator){if (!strcmp(m_ObjectIterator->name, _name) &&m_ObjectIterator->fatherID == m_CurPathID){cout<<"\t"<<setw(10)<<m_ObjectIterator->name;cout<<"\t"<<setw(8)<<m_ObjectIterator->size;if(m_ObjectIterator->type)cout<<"\t"<<setw(8)<<"文件";elsecout<<"\t"<<setw(8)<<"目录";char time[32];strcpy(time,m_ObjectIterator->lastTime);cout<<"\t"<<time<<endl;}}return true;}bool FBSystem::FuzzyInquiry(char _name){printf("\t 名称\t 大小\t 类型\t 时间\n");for(this->m_ObjectIterator = m_ObjectList.begin();m_ObjectIterator!= m_ObjectList.end();++m_ObjectIterator){if (m_ObjectIterator->name[0]==_name&&m_ObjectIterator->fatherID == m_CurPathID){cout<<"\t"<<setw(10)<<m_ObjectIterator->name;cout<<"\t"<<setw(8)<<m_ObjectIterator->size;if(m_ObjectIterator->type)cout<<"\t"<<setw(8)<<"文件";elsecout<<"\t"<<setw(8)<<"目录";char time[32];strcpy(time,m_ObjectIterator->lastTime);cout<<"\t"<<time<<endl;}}return true;}int FBSystem::SeekCommand(char* _command){if(m_pow==0) //游客{for (int i=0; i<16; i++){if (!(strcmp(m_Command[i], _command))){switch(i){case 0:cout<<"对不起！您没有这个权限！"<<endl;break;case 1:cout<<"对不起！您没有这个权限！"<<endl;break;case 2:cout<<"对不起！您没有这个权限！"<<endl;break;case 3:return i;break;case 4:cout<<"对不起！您没有这个权限！"<<endl;break;case 5:cout<<"对不起！您没有这个权限！"<<endl;break;case 6:cout<<"对不起！您没有这个权限！"<<endl;break;case 7:cout<<"对不起！您没有这个权限！"<<endl;break;case 8:return i;break;case 9:cout<<"对不起！您没有这个权限！"<<endl;break;case 10:return i;break;case 11:return i;break;case 12:return i;break;case 13:return i;break;case 14:return i;break;case 15:return i;break;default:break;}}}}if(m_pow==1) //管理员{for (int i=0; i<16; i++){if (!(strcmp(m_Command[i], _command))){return i;}}}return -1;}int FBSystem::GetMaxID(){for(this->m_ObjectIterator = m_ObjectList.begin();m_ObjectIterator!= m_ObjectList.end();++m_ObjectIterator){if(m_ObjectIterator->objectID>m_CurMaxID){ m_CurMaxID = m_ObjectIterator->objectID + 1;return m_CurMaxID;}}return m_CurMaxID+1;}void FBSystem::Exit(){m_NumOfObject = m_ObjectList.size();FBObject *buf = new FBObject[m_NumOfObject];int i =0;for(m_ObjectIterator = m_ObjectList.begin();m_ObjectIterator!= m_ObjectList.end();++m_ObjectIterator,i++){buf[i] = *m_ObjectIterator;}FILE *p = fopen("system", "w+");fwrite(&m_NumOfObject, 4,1, p);fseek(p, 4, SEEK_SET);fwrite(buf, sizeof(FBObject), m_NumOfObject, p);fclose(p);}char* FBSystem::GetTime(){//time_t now_time = time(NULL);//int year = now_time/time_t t = time(0);char tmp[64];strftime( tmp, sizeof(tmp), "%Y/%m/%d %X",localtime(&t));//puts( tmp );return tmp;}FBSystem.h#include <list>#include <ctime>#include <time.h>#include <stdio.h>#include <conio.h>#include <iostream>#include <iomanip>#include <string>using namespace std;struct FBObject{int fatherID; //父节点IDint objectID; //该对象IDchar name[1024]; //对象名称int size; //对象尺寸int type; //对象类型0为目录，1为文件char lastTime[256]; //对象最后修改时间};class FBSystem{public:FBSystem();~FBSystem(){}bool Login(char* _userName, char* _password); //用户认证void Initialize(); //初始化bool CreateDirectory(char* _dirName); //创建目录bool DeleteDirectory(char* _dirName); //删除目录bool RenameDirectory(char* _srcName, char* _descName); //修改目录名称bool OpenDirectory(char* _name); //进入目录bool CreateFile(char* _fileName); //创建文件bool DeleteFile(char* _fileName); //删除文件bool RenameFile(char* _srcName, char* _descName); //修改文件名称bool ReturnPreDirectory(); //返回上一层目录void Format(); //格式化bool Read(char* _name); //读文件bool Write(char* _name); //写文件bool Write2(char* _text);void ShowAllFiles(); //显示当前目录所有文件信息void ShowMenu(); //显示菜单bool Inquiry(char* _name); //查询bool FuzzyInquiry(char _name); //模糊查询void Exit();int SeekCommand(char* _command); //搜索是否存在刚刚输入的命令int GetMaxID(); //获得当前可用的最大IDchar* GetTime(); //获得时间public:char m_Command[16][32]; //存储所有命令char m_CommandTemp[32]; //刚刚输入的命令char m_CurPath[10][256]; //记录当前路径int m_CurPathFatherID; //当前所在的目录的父节点IDint m_CurPathID; //当前所在的目录自身IDint m_pow;protected:list<FBObject> m_ObjectList; //对象列表list<FBObject>::iterator m_ObjectIterator; //迭代器int m_NumOfObject;char m_UserName[256];char m_Password[256];char m_UserName1[256];char m_Password1[256];char m_UserName2[256];char m_Password2[256];char m_UserName3[256];char m_Password3[256];int m_CurMaxID; //当前所有对象的ID 最大值，用来创建对象IDint m_CurFaID;};。