stuinfomanager.h

在年级成绩管理系统中

#include <string>
#include <vector>
#include <fstream>

#include "StuInfoVec.h"
#include "SIManagerHelper.h"
namespace StudentInfomationManageStudio
{
const std::string DEFAULT_FILE_NAME="NewStuInfoStore.sdm";
//const std::string SUBJUCT_[]={"英语","数学","程序","物理","体育"};
const std::string SUBJUCT_[]={"Eng","Maths","Prog","Phys","Spts"};

class StuInfoManager :public StuInfoVec
{
protected:
	bool isModified;//学生信息是否已被修改还未保存
	int toRemvNodes;//做了删除标记的记录数
	std::string fileName;
	bool MaxToMin;
	// static std::string DEFAULT_FILE_NAME;
	//菜单选择函数
	std::string menuSelect()
	{
		std::string cmd;
		char ch;
		cout<<'\\'<<this->fileName<<'>';
		cin.clear();
		cout.clear();
		while(((ch=getchar())==' ')||(ch=='\n'));
		do
		{
			cmd+=ch;
		}while(((ch=getchar())!=' ')&&(ch!='\n'));
		return cmd;
	}
	//命令获取函数
	std::string NextCmd()
	{
		std::string cmd;
		char ch;
		while(((ch=getchar())==' ')||(ch=='\n'));
		do
		{
			cmd+=ch;
		}while(((ch=getchar())!=' ')&&(ch!='\n'));
		return cmd;
	}
	//获得操作类型指令
	int getCmdType()
	{
		std::string cmd=this->NextCmd();
		if(cmd=="number")      {return  0;}
		else if(cmd=="name")   {return  1;}
		else if(cmd=="index")  {return  2;}
		else if(cmd=="cancel") {return -1;}
		else if(cmd=="help")   {SIManagerHelper::display();return -2;}
		else {cout<<"Command \'"<<cmd<<"\' is unknown!"<<endl
					  <<"Input \'help\' for help."<<endl;return -2;}
    }
	//从字符串计算出一符点值,用于排序
    float getLynCode(const std::string& str)
    {
    	float code=0;
    	char ch;
    	float del=1;
    	int length=str.length();
    	for(int i=0;i<length;i++)
    	{
			ch=str[i];
			del=1;
			for(int j=0;j<i;j++)
				del*=32;
			code+=(float)((double)(ch-'0')*128/(double)del);
		}
		return code;
	}
	//找出给定总分在所有记录中的名次
	int getIndex(float sum)
	{
        Iterator it;
        Iterator it_end=this->recVec.end();
        int count=0;
        for(it=this->recVec.begin();it!=it_end;it++)
        {
			if((*it)->sum>sum && (*it)->toBeDeleted==false && (*it)->index!=0)
				count++;
        }
        return count+1;
	}
	//更新排名(增加删除记录时调用)
	protected:	void countIndex(float resetScoreFrom,bool isAdd)
	{
		int TSize=this->size();
		Record *newRec;
		for(int i=0;i<TSize;i++)
		{
			newRec=this->recVec[i];
			if(newRec->sum<resetScoreFrom&&newRec->index!=0)
			{
				newRec->index += (isAdd? 1:-1); 
			}
		}
		isModified=true;
	}
	//更新排名(装载文件时调用)
	protected:	void countNewIndex()
	{
		int TSize=this->size();
		Record *newRec;
		for(int i=0;i<TSize;i++)
		{
			newRec=this->recVec[i];
			if(newRec->index==0)
			{
				newRec->index=this->getIndex(newRec->sum); 
				this->countIndex(newRec->sum,true);
			}
		}
		isModified=true;
	}
	//显示表头
	void dispTable()
	{
    	cout<<" ";
    	cout.width(12);
    	cout<<"Number";
    	cout<<" ";
    	cout.width(8);
    	cout<<"Name";
    	cout<<"  ";
    	cout.width(5);
    	cout<<"Index";
    	cout<<"  ";
    	cout.width(3);
    	cout<<"GD";
    	cout<<" ";
    	for(int i=0;i<DEFUALT_SCORE_AMOUNT;i++)
    	{
    	    cout.width(4);
    	    cout<<SUBJUCT_[i];
    	    cout<<" ";
    	}
    	cout.width(4);
    	cout<<"Sum";
    	cout<<" ";
    	cout.width(8);
    	cout<<"Average";
    	cout<<endl;
	}

public:
	//static std::string SUBJUCT_[];

public:
	StuInfoManager()
	{
		fileName=DEFAULT_FILE_NAME;
	    MaxToMin=true;
	}
	virtual ~StuInfoManager()
	{
		this->recVec.clear();
	}
	//开始成绩
	virtual void start()
	{
		cout<<"Note:Input \'help\' for help."<<endl<<endl;
		this->handleMenu();
	}
	//菜单处理函数管理程序的用户界面操作
	virtual void handleMenu()
	{
		std::string cmd;
		bool QuitState=false;
		while(!QuitState)
		{
			cmd=this->menuSelect();
			if(cmd=="disps")        {displayRecords();}
			else if(cmd=="query")   {queryRecord();}
			else if(cmd=="add")     {addRecord();}
			else if(cmd=="remove")  {removeRecord();}
			else if(cmd=="comeback"){removeNote();}
			else if(cmd=="modify")  {modifyRecord();}
			else if(cmd=="sort")    {sortRecords();}
			else if(cmd=="save")    {saveRecords();}
			else if(cmd=="load")    {loadRecords();}
			else if(cmd=="quit")    {quit();QuitState=true;}
			else if(cmd=="clear")   {clear();}
			else if(cmd=="dispr")   {dispRecord();}
			else if(cmd=="recycl")   {dispRecycl();}
			else if(cmd=="help")    {SIManagerHelper::display();}
			else {cout<<"Command \'"<<cmd<<"\' is unknown!"<<endl
					  <<"Input \'help\' for help."<<endl;}
		}
	}
	//显示记录
	virtual void displayRecords()
	{
		this->dispTable();
		cout<<this->recVec;
		cout<<endl<<this->recVec.size()<<" infos be show."<<endl;
	}
	//查询记录
	virtual void queryRecord()
	{
		std::string cmd;
		int type;
        std::string patten;
        Iterator found;
		cout.clear();
		cin.clear();
        int count=0;
        for(;;)
        {
			cout<<"    \\Query>";
			type=this->getCmdType();
			switch(type)
			{
			case -2:break;
			case -1:return;
			case  0:
			case  1:
			case  2:
            	{
					cin>>patten;
					count=0;
					this->dispTable();
					found=this->recVec.begin();
					while((found=this->findRecord(patten, type, found))!=this->recVec.end())
					{
						cout<<endl<<*(*found);
						count++;
						found++;
					}
					cout<<endl<<count<<"Infos match \'"<<patten<<"\' be found."<<endl;
					cout.clear();
					cin.clear();
					break;
            	}
			default:cout<<endl<<"Unknown type."<<endl;return;
			}
		}
	}
	//添加记录
	virtual void addRecord()
	{
		Record *newRec=new Record();
		cin>>*newRec;
		if(this->findRecord(newRec->number,0,this->recVec.begin())==this->recVec.end())
		{
			newRec->index=this->getIndex(newRec->sum);
			this->countIndex(newRec->sum,true);
			StuInfoVec::addRecord(newRec);
    	}
    	else
    	{
            cout<<"new info number \'"<<newRec->number<<"\' is already presence."<<endl;
            delete newRec;
        }
	}
	//删除记录
	virtual void removeRecord()
	{
		std::string cmd;
		int type;
        std::string patten;
        Iterator found=this->recVec.begin();
        int count=0;
		type=this->getCmdType();
		switch(type)
		{
		case -2:break;
		case -1:return;
		case  0:
		case  1:
		case  2:
            {
				cin>>patten;
				while((found=this->findRecord(patten, type, found))!=this->recVec.end())
				{
					(*found)->toBeDeleted=true;
					this->countIndex((*found)->sum,false);
					count++;
					found++;
					if(type==2)break;
				}
				cout<<endl<<count<<" Infos match \'"<<patten<<"\' be removed."<<endl;
				isModified=true;
				return;
    		}
		default:cout<<endl<<"Unknown type."<<endl;
		}
	}
	//标记删除记录
	virtual void removeNote()
	{
		std::string cmd;
		int type;
        std::string patten;
        Iterator found=this->recVec.begin();
        int count=0;
		type=this->getCmdType();
		switch(type)
		{
		case -2:break;
		case -1:return;
		case  0:
		case  1:
		case  2:
            {
				cin>>patten;
				while((found=this->findRecord(patten, type, found))!=this->recVec.end())
				{
					(*found)->toBeDeleted=false;
					(*found)->index=this->getIndex((*found)->sum);
					this->countIndex((*found)->sum,false);
					count++;
					found++;
				}
				cout<<endl<<count<<" Infos match \'"<<patten<<"\' be comeback."<<endl;
				isModified=true;
				return;
            }
		default:cout<<endl<<"Unknown type."<<endl;
		}
	}
	//修改记录
	virtual void modifyRecord()
	{
		std::string cmd;
		int type;
        std::string patten;
        Iterator found=this->recVec.begin();
        int count=0;
		type=this->getCmdType();
		switch(type)
		{
		case -2:break;
		case -1:return;
		case  0:
		case  1:
		case  2:
            {
				cin>>patten;
				while((found=this->findRecord(patten, type, found))!=this->recVec.end())
				{
					count++;
					cout<<endl<<" No."<<count<<" Info be found:";
					cout<<endl<<*(*found);
					cin.clear();
					cout.clear();
					this->countIndex((*found)->sum,false);
					cin>>*(*found);
					(*found)->index=this->getIndex((*found)->sum);
					this->countIndex((*found)->sum,true);
					found++;
				}
				cout<<endl<<count<<"Infos match \'"<<patten<<"\' be modifyed."<<endl;
				isModified=true;
				return;
            }
		default:cout<<endl<<"Unknown type."<<endl;
		}
	}
	//记录排序
	virtual void sortRecords()
	{
		std::string cmd;
		int type;
        std::string patten;
        Iterator found=this->recVec.begin();
		type=this->getCmdType();
		switch(type)
		{
		case -2:break;
		case -1:return;
		case  0:
		case  1:
		case  2:
            {
				int TSize=this->recVec.size();
				if(TSize==0) return;
				float *floatArray=new float[TSize];
				float float_temp;
				Record *rec_temp;
				for(int i=0;i<TSize;i++)
				{
					rec_temp=this->recVec[i];
					switch(type)
					{
					case 0: floatArray[i] = this->getLynCode(rec_temp->number); break;
					case 1: floatArray[i] = this->getLynCode(rec_temp->name);   break;
					case 2: floatArray[i] = rec_temp->sum; break;
					};
				}
				for(int j=0;j<TSize;j++)
				{
					for(int i=0;i<TSize-j-1;i++)
					{
						if((MaxToMin==true&&floatArray[i]<floatArray[i+1])||(MaxToMin==false&&floatArray[i]>floatArray[i+1]))
						{
							float_temp=floatArray[i];
							floatArray[i]=floatArray[i+1];
							floatArray[i+1]=float_temp;
							rec_temp=this->recVec[i];
							this->recVec[i]=this->recVec[i+1];
							this->recVec[i+1]=rec_temp;
						}
					}
				}
				delete[]floatArray;
				isModified=true;
				cout<<endl<<"Infos be sorted.And the direction is "<<(MaxToMin? "Max to Min":"Min to Max")<<"."<<endl;
				MaxToMin=!MaxToMin;
				return;
   			}
		default:cout<<endl<<"Unknown type."<<endl;
		}
	}
	//保存记录
	virtual void saveRecords()
	{
        std::string fileOut;
        cin>>fileOut;
		std::ofstream fileStreamOut;
		fileStreamOut.open(fileOut.c_str(),std::ios_base::out|std::ios_base::trunc);
		if(fileStreamOut)
		{
			if(StuInfoVec::saveRecords(fileStreamOut)==true)
            	cout<<"Records successful save to \""<<fileOut<<"\"."<<endl;
            else
                cout<<"Records failed save to \""<<fileOut<<"\"."<<endl;
			this->fileName=fileOut;
        }
        else
        {
            cout<<endl<<"File \""<<fileOut<<"\" open fail."<<endl;
        }
		fileStreamOut.close();
	}
	//读取记录
	virtual void loadRecords()
	{
        std::string fileIn;
        cin>>fileIn;
        int recordsBeLoad;
		std::ifstream fileStreamIn;
		fileStreamIn.open(fileIn.c_str(),std::ios_base::in);
		if(fileStreamIn)
		{
			recordsBeLoad=StuInfoVec::loadRecords(fileStreamIn);
			cout<<recordsBeLoad<<" records be loaded."<<endl;
			this->countNewIndex();
        }
        else
        {
            cout<<endl<<"File \""<<fileIn<<"\" open fail."<<endl;
        }
		fileStreamIn.close();
	}
	//结束程序
	virtual void quit()
	{
		this->clear();
	}
	//清空当前记录信息
	virtual void clear()
	{
		this->recVec.clear();
		this->fileName=DEFAULT_FILE_NAME;
		//this->removePerform();
	}
	//显示一条记录的信息
	void dispRecord()
	{
		int index;
		cin>>index;
		Record *record;
		index--;
		if(index<0||index>=(int)this->recVec.size())
		{
			cout<<endl<<"Index "<<index+1<<" out of range."<<endl;
		}
		else
		{
            this->dispTable();
            record=this->recVec[index];
            cout<<*record;
            if(record->toBeDeleted==true)
            	cout<<"This record has been removed!"<<endl;
        }
	}
	//显视已删除记录
    void dispRecycl()
    {
        Iterator it;
        Iterator it_end=this->recVec.end();
        int count=0;
        this->dispTable();
        for(it=this->recVec.begin();it!=it_end;it++)
        {
			if((*it)->toBeDeleted==true)
			{
				cout<<*(*it);
				count++;
            }
        }
		cout<<endl<<count<<" Infos be show."<<endl;
    }
};
};