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class of date #1

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247 changes: 244 additions & 3 deletions server_fork.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -22,9 +22,6 @@

using namespace std;

// share memory for multiprocess operations
int shmid = shmget(IPC_PRIVATE, sizeof(int), 0777|IPC_CREAT);

string* split(string s,char c, int& count) {
string static strar[1000];
count = 0;
Expand All @@ -41,6 +38,250 @@ string* split(string s,char c, int& count) {
return strar;
}

class Date
{
public:
string dateStr;
int day, month, year;

const int max_valid_yr = 9999, min_valid_yr = 1800

Date(string date_str)
{
dateStr = date_str;
int cnt;
string *str = split(date_str, '.', cnt);
day = stoi(str[0]);
month = stoi(str[1]);
year = stoi(str[2]);
}

Date(string date_str, int d, int m, int y)
{
dateStr = date_str;
day = d;
month = m;
year = y;
}

Date(Date date)
{
this->dateStr = date.dateStr;
this->day = date.day;
this->month = date.month;
this->year = date.year;
}


bool operator==(Date lhs, Date rhs)
{
if(lhs.day == rhs.day && lhs.month == rhs.month && lhs.year == rhs.year)
return true;
else
false;
}

bool operator>(Date lhs, Date rhs)
{
if(lhs.year > rhs.year)
return true;
else if(lhs.year < rhs.year)
return false;
else
{
if(lhs.month > rhs.month)
return true;
else if(lhs.month < rhs.month)
return false;
else
{
if(lhs.day > rhs.day)
return true;
return false;
}
}
}

bool operator<(Date lhs, Date rhs)
{
if(lhs.year < rhs.year)
return true;
else if(lhs.year > rhs.year)
return false;
else
{
if(lhs.month < rhs.month)
return true;
else if(lhs.month > rhs.month)
return false;
else
{
if(lhs.day < rhs.day)
return true;
return false;
}
}
}

bool isLeap(int year)
{
return (((year % 4 == 0) &&
(year % 100 != 0)) ||
(year % 400 == 0));
}

bool isValidDate()
{
if (year > max_valid_yr || year < min_valid_yr)
return false;
if (month < 1 || month > 12)
return false;
if (day < 1 || day > 31)
return false;

if (month == 2)
{
if (isLeap(year))
return (day <= 29);
else
return (day <= 28);
}

if (month == 4 || month == 6 || month == 9 || month == 11)
return (day <= 30);

return true;
}

int dateCompare(Date dt)
{
if(*this > dt)
return 1;
else if(*this == dt)
return 0;
else
return -1;
}
};

class record
{
public:
string date, item;
double price;
bool validity;

record(string s)
{
int cnt;
string* str = split(s, ' ', cnt);
date = str[0];
item = str[1];
validity = true;
if(Date(date).isValidDate())
{
validity = false;
}
try
{
price = stod(str[2]);
}
catch(Exception)
{
price = -1;
validity = false;
}
}

record(record rec)
{
date = rec.date;
item = rec.item;
price = rec.price;
}

bool isRecValid()
{
return validity;
}

int recCompare(record rhs, char by)
{
if(by == 'D')
{
Date dt1 = Date(this->date);
Date dt2 = Date(rhs.date);
if(dt1 == dt2)
return 0;
else if(dt1 > dt2)
return 1;
else
return -1;
}
else if(by == 'N')
{
return this->item.compare(rhs.item);
}
else if(by == 'P')
{
if(this->price == rhs.price)
return 0;
else if(this->price > rhs.price)
return 1;
else
return -1;
}
}

void swap_recs(record& bil1, record& bil2)
{
string date = bil1.date, item = bil1.item;
double price = bil1.price;
bil1.date = bil2.date;
bil1.item = bil2.item;
bil1.price = bil2.price;
bil2.date = date;
bil2.item = item;
bil2.price = price;
}
};

class bill
{
public:
record *arr;
int n;
bill(int n)
{
this->n = n;
arr = new record[n];
}
void sort_bills(char by)
{
if(by == 'D')
{

}
else if(by == 'N')
{

}
else if(by == 'P')
{

}
}
void print()
{
for(int i = 0; i < n; i++)
{
cout << arr[i].date << " " << arr[i].item << " " << arr[i].price << "\n";
}
}
};

// share memory for multiprocess operations
// int shmid = shmget(IPC_PRIVATE, sizeof(int), 0777|IPC_CREAT);

int main()
{
Expand Down