dos.c

本程序是模拟DOS系统下创建目录

                FolderName[i]=order[mark];
                if(order[mark+1]=='\0')
                {
                    pFolder=CreateChildFolder(FolderName);
                    for(;i>0;i--)
                    {
                        FolderName[i]='\0';
                    }
                    break;
                }
                ++i;
                ++mark;
            }
            menu();
            break;
        }
        else
        {
            printf("Error Operate Command!!");
            menu();
        }
    }
}

CDoperation(int i,int mark,char order[50],char FolderName[10])
{
    while(order[mark]!='\0')
    {
        if(order[mark]==' ')
        {
            mark++;
            continue;
        }
        else if(order[mark]==92)
        {
            if(order[mark+1]=='\0')
            {
                while(pFolder->ParentFolder!=NULL)
                {
                    pFolder=pFolder->ParentFolder;
                }
                menu();
                break;
            }
            if(order[mark+1]<=122&&order[mark+1]>=65)
            {
                while(pFolder->ParentFolder!=NULL)
                {
                    pFolder=pFolder->ParentFolder;
                }
                ++mark;
                while(1)
                {
                    FolderName[i]=order[mark];
                    if(order[mark+1]==92)
                    {
                        mark=mark+2;
                        OpenChildFolder(FolderName,1);
                        for(;i>0;i--)
                        {
                            FolderName[i]='\0';
                        }
                        continue;
                    }
                    if(order[mark+1]=='\0')
                    {
                        OpenChildFolder(FolderName,1);
                        for(;i>=0;i--)
                        {
                            FolderName[i]='\0';
                        }
                        break;
                    }
                    ++i;
                    ++mark;
                }
                menu();
                break;
            }
        }
        else if(order[mark]<=122&&order[mark]>=65)
        {
            while(1)
            {
                FolderName[i]=order[mark];
                if(order[mark+1]=='\0')
                {
                    OpenChildFolder(FolderName,1);
                    for(;i>0;i--)
                    {
                        FolderName[i]='\0';
                    }
                    break;
                }
                ++i;
                ++mark;
            }
            menu();
            break;
        }
        else
        {
            printf("Error Operate Command!!");
            menu();
        }
    }
}

RDoperation(int i,int mark,char order[50],char FolderName[10])
{
    while(order[mark]!='\0')
    {
        if(order[mark]==' ')
        {
            mark++;
            continue;
        }
        else if(order[mark]==92)
            {
                if(order[mark+1]<=122&&order[mark+1]>=65)
                {
                    ++mark;
                    while(1)
                    {
                        FolderName[i]=order[mark];
                        if(order[mark+1]==92)
                        {
                            mark=mark+2;
                            OpenChildFolder(FolderName,0);
                            for(;i>0;i--)
                            {
                                FolderName[i]='\0';
                            }
                            continue;
                        }
                        if(order[mark+1]=='\0')
                        {   
                            OpenChildFolder(FolderName,0);
                            DelFolder(FolderName);
                            for(;i>=0;i--)
                            {   
                                FolderName[i]='\0';
                            }
                            break;
                        }
                        ++i;
                        ++mark;
                    }
                    menu();
                    break;
                }
            }
        else if(order[mark]<=122&&order[mark]>=65)
        {
            while(1)
            {
                FolderName[i]=order[mark];
                if(order[mark+1]=='\0')
                {
                    OpenChildFolder(FolderName,0);
                    DelFolder(FolderName);
                    for(;i>0;i--)
                    {
                        FolderName[i]='\0';
                    }
                    break;
                }
                ++i;
                ++mark;
            }
            menu();
            break;
        }
        else
        {
            printf("Error Operate Command!!");
            menu();
        }
    }
}


menu()
{
    int i,j,k,mark;
    char order[50];
    char FolderName[10];
    Location();
    for(k=0;k<10;k++)
    {
        FolderName[k]='\0';
    }
    for(k=0;k<50;k++)
    {
        scanf("%c",&order[k]);
        if(order[k]=='\n')
        {
            order[k]='\0';
            break;
        }
    }

    if((order[0]=='m'||order[0]=='M')&&(order[1]=='d'||order[1]=='D'))
    {
        i=0;
        mark=2;
        MDoperation(i,mark,order,FolderName);
    }

    else if((order[0]=='c'||order[0]=='D')&&(order[1]=='d'||order[1]=='D'))
    {
        i=0;
        mark=2;
        CDoperation(i,mark,order,FolderName);
    }

    else if((order[0]=='d'||order[0]=='D')&&(order[1]=='i'||order[1]=='I')&&(order[2]=='r'||order[2]=='R'))
    {
        i=0;
        mark=4;
        if(order[mark]=='\0')
        {
            DIRoperation();
            menu();
        }
        else
        {
            while(order[mark]!='\0')
            {
                if(order[mark]==' ')
                {
                    mark++;
                    continue;
                }
                if(order[mark]==92)/*92为反斜扛'\'符号的编码*/
                {
                    if(order[mark+1]=='\0')
                    {
                        while(pFolder->ParentFolder!=NULL)
                        {
                            pFolder=pFolder->ParentFolder;
                        }
                        DIRoperation();
                        menu();
                        break;
                    }
                    if(order[mark+1]<=122&&order[mark+1]>=65)
                    {
                        while(pFolder->ParentFolder!=NULL)
                        {
                            pFolder=pFolder->ParentFolder;
                        }
                        ++mark;
                        while(1)
                        {
                            FolderName[i]=order[mark];
                            if(order[mark+1]==92)
                            {
                                mark=mark+2;
                                OpenChildFolder(FolderName,0);
                                for(;i>0;i--)
                                {
                                    FolderName[i]='\0';
                                }
                                continue;
                            }
                            if(order[mark+1]=='\0')
                            {   
                                OpenChildFolder(FolderName,0);
                                DIRoperation();
                                for(;i>=0;i--)
                                {   
                                    FolderName[i]='\0';
                                }
                                break;
                            }
                            ++i;
                            ++mark;
                        }
                        menu();
                        break;
                    }
                }
            }
        }
    }

    else if((order[0]=='r'||order[0]=='R')&&(order[1]=='d'||order[1]=='D'))
    {
        i=0;
        mark=2;
        RDoperation(i,mark,order,FolderName);
    }

    else if((order[0]=='e'||order[0]=='E')&&(order[1]=='x'||order[1]=='X')&&(order[2]=='i'||order[2]=='I')&&(order[3]=='t'||order[3]=='T'))
    {
        return 0;
    }

    else
    {
        printf("Error Operate Command!!");
        menu();
    }
}

main()
{
    pFolder=CreateDisk();
    menu();
}