main.cpp

#include <iostream>
#include <bitset>

#include "user.h"
#include "myfile.h"
#include "mynode.h"
#include "userdir.h"
#include "rootdir.h"


using namespace std;

void testnode(){
    Mynode node=Mynode("node",2);
    cout<<node.getNodename()<<":"<<node.getBlockNo()<<endl;
}

void testuser(){
    User user=User("zhang","123");
    //user.login("zhang","123");
    cout<<user.getUserName()<<endl;
    user.logout("zhang");
}

void testfile(){
    Myfile file=Myfile("txt","d:/",bitset<4>(string("1111")),"hello world!","david",9);
    cout<<file.getContent()<<endl;
    cout<<file.getFileAddress()<<endl;
    cout<<file.getFileAuthor()<<endl;
    cout<<file.getFileLength()<<endl;
    cout<<file.getFileName()<<endl;
    cout<<file.getProtectedBit()<<endl;
    cout<<file.getBlockNo()<<endl;
    cout<<file.readFile()<<endl;
    file.print();
    file.writeFile("ok!");
    cout<<file.readFile()<<endl;
}

void testsub(){
    Userdir sub=Userdir("zhang","123",1);
    cout<<sub.getDirAddr()<<endl;
    cout<<sub.getDirName()<<endl;
    cout<<sub.getDirBlockNo()<<endl;

    sub.createFile("hello",bitset<4>(string("1100")));
    sub.dirLogin("zhang","123");
    sub.createFile("hello",bitset<4>(string("1100")));
    sub.createFile("hello1",bitset<4>(string("1100")));  //test for uniqueness
    sub.readfile(0);
    sub.readfile(1);
    sub.listFile();
    int block=sub.getFileBolckNo("hello");
    cout<<sub.readfile(block)<<endl;
    sub.writefile(block,"haha");
    cout<<sub.readfile(block)<<endl;
    sub.deleteFile("hello");
    cout<<sub.readfile(block)<<endl;
}

void testroot(){
    Rootdir root=Rootdir();
    cout<<root.getRootAddr()<<endl;
    root.createDir("c");
    root.rootLogin("/","123");
    root.createDir("c");
    root.createDir("c");

    root.dirLogin("c");
    root.createFile("c","aaa");
    root.createFile("c","aaa");
    int file=root.openFile("c","aaa");
    cout<<root.readFile("c",file)<<endl;
    root.writeFile("c",file,"jjj");
    root.listDirFile("c");
    root.deleteFile("c","aaa");
    root.listDirFile("c");

    root.createDir("d"); //test for uniqueness
    root.listDir();
    cout<<root.getDirBlock("c")<<endl;
    root.deleteDir("c");
    cout<<root.getDirBlock("c")<<endl;
}




Rootdir root=Rootdir();
string currentFileName="";
int currentFileBlock=-1;
string currentDirName="";
int currentDirBlock=-1;

void login(string password){
    if(currentDirName==""){
        root.rootLogin("/",password);
        return;
    } else {
        root.dirLogin(currentDirName,password);
        return;
    }
}

void logout(){
    if(currentDirName==""){
        root.rootLogout();
        return;
    } else {
        root.dirLogout(currentDirName);
        return;
    }
}

void showList(){
    if(currentDirName==""){
        root.listDir();
        return;
    } else {
        root.listDirFile(currentDirName);
        return;
    }
}

void createDir(string dirname){
    if(currentDirName!=""){
        cout<<"您现在在子文件夹，请先返回主文件夹！"<<endl;
        return;
    }
    root.createDir(dirname);
    cout<<"成功创建文件夹："<<dirname<<endl;
}

void deleteDir(string dirname){
    if(currentDirName!=""){
        cout<<"您现在在子文件夹，请先返回主文件夹！"<<endl;
        return;
    }
    root.deleteDir(dirname);
}

void enterDir(string dirname){
    // in sub directory
    if(currentDirName!=""){
        if(dirname==".."){
            currentDirName="";
            currentDirBlock=-1;
            return;
        }else{
            cout<<"您现在在子文件夹，请先返回主文件夹！"<<endl;
            return;
        }
    }
    // in root directory
    int block=root.getDirBlock(dirname);
    if(block==-1){
        return;
    }
    currentDirName=dirname;
    currentDirBlock=block;
}

void createFile(string filename){
    if(currentDirName==""){
        cout<<"请先进入一个子文件夹！"<<endl;
        return;
    }
    root.createFile(currentDirName,filename);
    cout<<"成功创建文件："<<filename<<endl;
}

void delFile(string filename){
    if(currentDirName==""){
        cout<<"请先进入一个子文件夹！"<<endl;
        return;
    }
    root.deleteFile(currentDirName,filename);
}

void openFile(string dirname,string filename){
    int file=root.openFile(dirname,filename);
    if(file==-1){
        cout<<"打开文件失败！"<<endl;
        return;
    }
    currentFileBlock=file;
    currentFileName=filename;
    cout<<"打开文件"<<filename<<"成功"<<endl;
}

void closeFile(){
    currentFileBlock=-1;
    currentFileName="";
}

void readFile(string filename){
    if(currentDirName==""){
        cout<<"请先进入一个子文件夹！"<<endl;
        return;
    }
    if(filename!=currentFileName){
        cout<<"请先打开文件！"<<endl;
    }
    cout<<"文件内容："<<root.readFile(currentDirName,currentFileBlock)<<endl;
}

void writeFile(string filename,string content){
    if(currentDirName==""){
        cout<<"请先进入一个子文件夹！"<<endl;
        return;
    }
    if(filename!=currentFileName){
        cout<<"请先打开文件！"<<endl;
    }

    root.writeFile(currentDirName,currentFileBlock,content);
}

void mainloop(){

    string command;
    string para1;
    string para2;

    cout<<"欢迎来到myinux文件系统！以下为指令格式："<<endl
        <<"login password"<<"登录当前文件夹的账户"<<endl
        <<"logout"<<"退出当前文件夹的账户"<<endl
        <<"dir"<<"列当前文件夹的目录"<<endl
        <<"createDir directoryName"<<"在主目录下创建一个新的用户文件夹（需要登录）"<<endl
        <<"deleteDir directoryName"<<"在主目录下删除一个用户文件夹（需要登录）"<<endl
        <<"cd directoryName"<<"进入某个子文件夹"<<endl
        <<"create filename"<<"在当前用户文件夹内创建文件（需要登录）"<<endl
        <<"delete filename"<<"在当前用户文件夹内删除文件（需要登录）"<<endl
        <<"open dirname filename"<<"打开指定文件夹内指定文件"<<endl
        <<"close"<<"关闭已打开的文件"<<endl
        <<"read filename"<<"读取已经打开的文件的内容（根据文件保护码可能需要登录）"<<endl
        <<"write filename content"<<"向已经打开的文件内写内容（覆盖型，根据文件保护码可能需要登录）"<<endl
        <<"exit"<<"退出本系统"<<endl;

    while(true){
        cout<<"/"<<currentDirName<<"/:";

        cin>>command;

        if (command=="login"){
            cin>>para1;
            login(para1);
            continue;
        }
        if (command=="logout"){
            logout();
            continue;
        }
        if (command=="dir"){
            showList();
            continue;
        }
        if (command=="createDir"){
            cin>>para1;
            createDir(para1);
            continue;
        }
        if (command=="deleteDir"){
            cin>>para1;
            deleteDir(para1);
            continue;
        }
        if (command=="cd"){
            cin>>para1;
            enterDir(para1);
            continue;
        }
        if (command=="create"){
            cin>>para1;
            createFile(para1);
            continue;
        }
        if (command=="delete"){
            cin>>para1;
            delFile(para1);
            continue;
        }
        if (command=="open"){
            cin>>para1;
            cin>>para2;
            openFile(para1,para2);
            continue;
        }
        if (command=="close"){
            closeFile();
            continue;
        }
        if (command=="read"){
            cin>>para1;
            readFile(para1);
            continue;
        }
        if (command=="write"){
            cin>>para1;
            cin>>para2;
            writeFile(para1,para2);
            continue;
        }
        if (command=="exit"){
            cout<<"退出系统！"<<endl;
            break;
        }
        cout<<"未定义指令，请重新输入！"<<endl;
    }
}



int main()
{
    /*root缺少read file，write file方法*/
    //testuser();
    //testfile();
    //testnode();
    //testsub();
    //testroot();
    mainloop();
    return 0;
}