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// 캬~X~X.. 졸~] ~K~K~U~X~K ~E| .~E| ~U~Y~P ~Y~@~D~\ ~E~K거리~K~@ ~M ~U봤~]~L. ~L~L~D~\ ~L~S~\~J~T~M 80~T~D~\ ~]~C~A~]~X ~K~\~D~]~D..--;
// ~L~@~U~]~X ~X~H~Y~X리~O~D ~P~\거 ~Y| .. | | 거 ~^~H~]~L ~P~U주길
// DeleteMe ~W~I ~] 미~Y~D~]~X 컬~_~A ~D~@ 기~J~]~D .. ~V~V~L ~U~L| ..
// 문| ~\~]~X ~T~S~\ ~@~D
// ~U~D~^~X~\ ~]~V~@~J~T if/else-if~J~T ~T~S~\ ~Q복~]~]| ~E~K~H~K. ~]걸 ~V~V~L | ~\거~U| ~H~X ~^~H~]~D~L~Z~T? Command Pattern? Polymorphism? ~X~]~@ 그~C Table Lookup? --JuNe
if(command == "help")
{
Helper::showCommand();
}
else if(command == "mymoney")
{
cout << sm.getRestMoney() << endl;
}
else if(command == "inventory")
{
user.showBuyedGoods();
}
else if(command == "ask")
{
string good(&str[token+1], &str[str.size()]);
sm.answerCost(good);
}
else if(command == "deposit")
{
string m(&str[token+1], &str[str.size()]);
int money = StringConvertToInt(m);
user.depositMoney(sm, money);
}
else if(command == "exit")
{
exit(0);
}
else if(command == "menu")
{
sm.showMenu();
}
else if(command == "buy")
{
int token2 = getToken(str,2);
string good(&str[token+1], &str[token2]);
string cnt(&str[token2+1], &str[str.size()]);
int count = StringConvertToInt(cnt);
user.buyGoods(sm, sm.findGoods(good), count);
}
else if(command == "cancel")
{
int token2 = getToken(str,2);
string good(&str[token+1], &str[token2]);
string cnt(&str[token2+1], &str[str.size()]);
int count = StringConvertToInt(cnt);
user.cancleGoods(sm, sm.findGoods(good), count);
}
// ~V~V~L ~U~X면 if/else if ~Q복~]~D ~W~F~U~H~X ~^~H~]~D~L | 민~U~X~K~@ ~O리모~T~X~]~D ~]~Z~U~X기~\ ~V~H~J~K~H~K.(근~M ~]거 ~O리모~T~X~] ~^~B~X?--;)
// map<string, Cmd*> ~]~_~K~]~\~\ string~W~P~J~T 커맨~S~\를,Cmd ~A~^~X~J~J~T HelpCmd~A~^~X~J, Deposit~A~^~X~J ~S~S~]~X ~@모 ~A~^~X~J, ~I ~E| ~A~^~X~J~S~]~X
// 조~C~A ~A~^~X~J를 ~O~]~D~\ ~D~V줬~J~K~H~K. ~O~Y| ~A ~T~]~T~]~D ~U~X기 ~\~D~U~D~\..--; Parser~C~]~D~U| ~U~L map ~E~L~]~T~W~P~K ~E| ~S~]~D ~D~V주면~D~\ 그 ~E| ~W~P
// ~U~K~U~X~J~T ~A~^~X~J를 ~O~Y| ~A ~U| ~K~U주면~D~\ ~D~W~H~J~K~H~K. ~F~L멸~^~P~W~P~D~\~J~T ~U| ~\~U~X~J~T ~C~O~D ~^~J~@ ~U~J~U~X구~Z~T. ~B~X~D~L~@~\ ~C~A~K~^~H | 민~]~D ~V~H~@~L..--;
// ~]~C~V~W~T ~K~] ~U~H~B~X~X~D~Z~T.
// 그~^~X~D~\ ~B~X~D~L~@~\ | ~P본 ~C
#include <iostream>
#include <string>
#include <vector>
#include <cassert>
#include <map>
using namespace std;
class SuperMarket;
class User;
class Parser;
class Helper;
class Goods;
class Packages;
class Cmd;
class Goods
{
private :
string _name;
int _cost;
public :
Goods(const string& name, int cost) : _name(name), _cost(cost) {}
const string& getName() const
{
return _name;
}
int getCost() const
{
return _cost;
}
};
class Packages
{
private :
Goods _good;
int _count;
public :
Packages(const Goods& good, int count) : _good(good), _count(count) {}
const Goods& getGoods() const
{
return _good;
}
int getCount() const
{
return _count;
}
void setCount(int n)
{
_count = n;
}
};
class SuperMarket
{
private :
int _receivedMoney;
vector<Goods> _havingGoods;
public :
SuperMarket()
{
Goods g1("candy",1000);
_havingGoods.push_back(g1);
Goods g2("diskette",1200);
_havingGoods.push_back(g2);
Goods g3("mouse",5000);
_havingGoods.push_back(g3);
_receivedMoney = 0;
}
void receiveMoney(int money)
{
_receivedMoney = money;
cout << "OK" << endl;
}
void showMenu() const
{
cout << " ~T~I " << endl;
for(int i = 0 ; i < _havingGoods.size() ; ++i)
{
cout << _havingGoods[i].getName() << " " << _havingGoods[i].getCost() << endl;
}
}
void sellGoods(const Goods& goods, int count)
{
_receivedMoney -= goods.getCost() * count;
}
int getRestMoney() const
{
return _receivedMoney;
}
const vector<Goods>& getGoods() const
{
return _havingGoods;
}
void answerCost(const string& goodsName) const
{
bool isFind = false;
for(int i = 0 ; i < _havingGoods.size() ; ++i)
{
if(_havingGoods[i].getName() == goodsName)
{
cout << _havingGoods[i].getCost() << endl;
isFind = true;
break;
}
}
if(!isFind)
{
cout << "그~_ 물건 ~W~F~]~L!" << endl;
}
}
const Goods& findGoods(const string& goodsName) const
{
for(int i = 0 ; i < _havingGoods.size() ; ++i)
{
if(_havingGoods[i].getName() == goodsName)
{
return _havingGoods[i];
}
}
}
};
class User
{
private :
vector<Packages> _buyedGoods;
public :
void depositMoney(SuperMarket& sm, int money) const
{
sm.receiveMoney(money);
}
void showBuyedGoods()
{
if(_buyedGoods.size() == 0)
cout << "None" << endl;
else
{
for(int i = 0 ; i < _buyedGoods.size() ; ++i)
{
cout << _buyedGoods[i].getGoods().getName() << " " << _buyedGoods[i].getCount() << endl;
}
}
}
void buyGoods(SuperMarket& sm, const Goods& goods, int count)
{
if(sm.getRestMoney() < goods.getCost() * count)
cout << "can't buy" << endl;
else
{
sm.sellGoods(goods, count);
Packages p(goods, count);
_buyedGoods.push_back(p);
}
}
void cancleGoods(SuperMarket& sm, const Goods& goods, int count)
{
bool isFind = false;
int nth = 0;
for(int i = 0 ; i < _buyedGoods.size() ; ++i)
{
if(goods.getName() == _buyedGoods[i].getGoods().getName())
{
isFind = true;
nth = i;
}
}
if(!isFind)
cout << "그 물건 ~U~H~C~@~V~Z~T." << endl;
else
{
if(_buyedGoods[nth].getCount() < count)
{
cout << "~B ~C보~K ~M~T ~N~] 취~F~L 못~U~K~H~K." << endl;
}
else if(_buyedGoods[nth].getCount() == count)
{
if(_buyedGoods[nth].getCount() == 0)
{
_buyedGoods.erase(_buyedGoods.begin() + nth);
}
}
else
{
_buyedGoods[nth].setCount( _buyedGoods[nth].getCount() - count );
}
}
}
};
class Helper
{
public :
static void showCommand()
{
cout << "* deposit <money> -- ~O~H~]~D money~L~A ~X~H~H~U~\~K. " << endl;
cout << "* mymoney -- ~B~]~@ ~O~H~]~D 보~W~@~K." << endl;
cout << "* buy <product> <count> -- product 물건~]~D count ~L~A ~B~K." << endl;
cout << "* inventory -- ~B 물건~]~X 목~]~]~D 보~W~@~K ." << endl;
cout << "* cancel <product> <count> -- ~B product 물건~]~D count~\~L~A 취~F~L~U~\~K ." << endl;
cout << "* ask <product> -- procuct 물건~]~X ~@격~]~D 묻~J~T~K ." << endl;
cout << "* menu -- 구매 ~@~J~U~\ 물건~]~X 목~]~]~D 보~W~@~K ." << endl;
cout << "* exit -- ~@~L를 ~B~X~D~K ." << endl;
}
};
class Cmd
{
public :
virtual void executeCommand(SuperMarket& sm, User& user, const string& str) = 0;
static int getToken(const string& str, int nth)
{
int ret = str.size();
int count = 0;
for(int i = 0 ; i < str.size() ; ++i)
{
if(str[i] == ' ')
{
ret = i;
++count;
if(count == nth)
return ret;
}
}
return ret;
}
int StringConvertToInt(string& str)
{
int ret = 0;
for(int i = 0 ; i < str.length() ; ++i)
{
ret += CharToInt(str[i]) * Power(10,(str.length() - i));
}
return ret;
}
int CharToInt(char ch)
{
return ch - 48;
}
int Power(int c, int e)
{
int ret = 1;
for(int i = 0 ; i < e - 1 ; ++i)
{
ret *= c;
}
return ret;
}
};
class HelpCmd : public Cmd
{
public :
void executeCommand(SuperMarket& sm, User& user, const string& str)
{
Helper::showCommand();
}
};
class MyMoneyCmd : public Cmd
{
public :
void executeCommand(SuperMarket& sm, User& user, const string& str)
{
cout << sm.getRestMoney() << endl;
}
};
class InventoryCmd : public Cmd
{
public :
void executeCommand(SuperMarket& sm, User& user, const string& str)
{
user.showBuyedGoods();
}
};
class AskCmd : public Cmd
{
public :
void executeCommand(SuperMarket& sm, User& user, const string& str)
{
int token = getToken(str, 1);
string good(&str[token+1], &str[str.size()]);
sm.answerCost(good);
}
};
class DepositCmd : public Cmd
{
public :
void executeCommand(SuperMarket& sm, User& user, const string& str)
{
int token = getToken(str, 1);
string m(&str[token+1], &str[str.size()]);
int money = StringConvertToInt(m);
user.depositMoney(sm, money);
}
};
class ExitCmd : public Cmd
{
public :
void executeCommand(SuperMarket& sm, User& user, const string& str)
{
exit(0);
}
};
class MenuCmd : public Cmd
{
public :
void executeCommand(SuperMarket& sm, User& user, const string& str)
{
sm.showMenu();
}
};
class BuyCmd : public Cmd
{
public :
void executeCommand(SuperMarket& sm, User& user, const string& str)
{
int token = getToken(str,1);
int token2 = getToken(str,2);
string good(&str[token+1], &str[token2]);
string cnt(&str[token2+1], &str[str.size()]);
int count = StringConvertToInt(cnt);
user.buyGoods(sm, sm.findGoods(good), count);
}
};
class CancleCmd : public Cmd
{
public :
void executeCommand(SuperMarket& sm, User& user, const string& str)
{
int token = getToken(str,1);
int token2 = getToken(str,2);
string good(&str[token+1], &str[token2]);
string cnt(&str[token2+1], &str[str.size()]);
int count = StringConvertToInt(cnt);
user.cancleGoods(sm, sm.findGoods(good), count);
}
};
class Parser
{
private :
map<string, Cmd*> _tableCmd;
public :
Parser()
{
_tableCmd["help"] = new HelpCmd();
_tableCmd["mymoney"] = new MyMoneyCmd();
_tableCmd["inventory"] = new InventoryCmd();
_tableCmd["ask"] = new AskCmd();
_tableCmd["deposit"] = new DepositCmd();
_tableCmd["exit"] = new ExitCmd();
_tableCmd["menu"] = new MenuCmd();
_tableCmd["buy"] = new BuyCmd();
_tableCmd["cancle"] = new CancleCmd();
}
void translateCommand(SuperMarket& sm, User& user, const string& str)
{
int token = Cmd::getToken(str,1);
string command(&str[0], &str[token]);
_tableCmd[command]->executeCommand(sm, user, str);
}
virtual ~Parser()
{
map<string, Cmd*> :: iterator i;
for(i = _tableCmd.begin() ; i != _tableCmd.end() ; ++i)
{
delete &(i->second);
}
}
};
int main()
{
User user;
SuperMarket superMarket;
Parser parser;
char command[30];
while(1)
{
cout << endl << ">>> " ;
cin.getline(command, 30);
parser.translateCommand(superMarket, user, command);
}
return 0;
}
