//------------------------------------------------------------------------
// Date
//------------------------------------------------------------------------
Date::Date(std::string _date) {
if (_date.length() == 0) {
paramter_undefined = true;
return;
}
code = date_to_int(_date);
day = code % 100;
month = (code / 100) % 100;
year = code / 10000;
}
/***********************************************************************
* function : ask_dates()
* purpose : ask user for date(s) and store it/them in a struct
* of type dates
* argument :
* — bool multiple : true to ask for two dates
* false to ask for one date
* return : pointer to struct of type dates
* notes :
* —
***********************************************************************/
dates_ptr ask_dates(bool multiple){
dates_ptr dt = NULL;
bool exit_loop = false;
int ub_date_req = 0, lb_date_req = 0, swap;
char ub_date_req_str[DTSL], lb_date_req_str[DTSL], swap_str[DTSL];
/***********************************************************************
*@ bool type
* multiple -> date range (true) or specific date (false)
*@ int type
* ub_date_req -> upper bound date integer
* lb_date_req -> lower bound date integer
* swap -> auxiliary integer for swap
*@ char type
* ub_date_req_str[DTSL] -> upper bound date string
* lb_date_req_str[DTSL] -> lower bound date string
* swap_str[DTSL] -> auxiliary string for swap
*@ dates_ptr type
* request -> pointer to struct containing dates
***********************************************************************/
while (!exit_loop){
if (multiple)
printf("\n / /\r");
else
printf("\n / /\r");
printf(" Please give draw's ");
if ((multiple) && (ub_date_req <= 0))
printf("UPPER bound ");
else if ((multiple) && (lb_date_req <= 0))
printf("LOWER bound ");
printf("DATE in dd/mm/yyyy format\t:\t");
fflush(stdin);
if (ub_date_req <= 0){
scanf("%s", &ub_date_req_str);
ub_date_req = date_to_int(ub_date_req_str);
if (!multiple){
strcpy(lb_date_req_str, ub_date_req_str);
lb_date_req = ub_date_req;
}
}
else{
scanf("%s", &lb_date_req_str);
lb_date_req = date_to_int(lb_date_req_str);
}
getchar();
exit_loop = (lb_date_req > 0) && (ub_date_req > 0);
if ((ub_date_req <= 0) && (lb_date_req <= 0))
printf("\n\a Invalid date\n");
}
/* swap if inputs not in correct order */
if (lb_date_req > ub_date_req){
swap = ub_date_req;
strcpy(swap_str, ub_date_req_str);
ub_date_req = lb_date_req;
strcpy(ub_date_req_str, lb_date_req_str);
lb_date_req = swap;
strcpy(lb_date_req_str, swap_str);
}
dt = (dates_ptr)malloc(sizeof(struct dates));
assert(dt);
dt->lb_date_req = lb_date_req;
dt->ub_date_req = ub_date_req;
strcpy(dt->lb_date_req_str, lb_date_req_str);
strcpy(dt->ub_date_req_str, ub_date_req_str);
return dt;
}
/***********************************************************************
* function : search_draws()
* purpose : search for draws in date range specified by dt
* argument :
* — dates_ptr dt : pointer to struct of type dates
* return : pointer to struct of type draw
* notes :
* — returned pointer points to list of structs of type draw
***********************************************************************/
draw_ptr search_draws(dates_ptr dt){
int date_fnd, *win_nums, arr_pos = 0;
char id_str[IDSL], date_str[DTSL], win_nums_str[WNSL], joker_str[JSL];
draw_ptr new_draw, list_head = NULL;
/***********************************************************************
*@ int type
* date_fnd -> checking draw's date inverted integer
* win_nums -> pointer to checking draw's wining numbers integer array
* arr_pos -> index on array position
*@ char type
* id_str -> checking draw's id string
* date_str -> checking draw's date string
* win_nums_str -> checking draw's wining numbers string
* joker_str -> checking draw's joker string
*@ dates_ptr
* dt -> pointer to struct containing dates
*@ draw_ptr type
* list_head -> pointer to list of structs represents draws
* new_draw -> pointer to new struct draw
***********************************************************************/
rewind(rf_ptr);
fscanf(rf_ptr, "%s%s%s%s", id_str, date_str, win_nums_str, joker_str);
/*
* Scan reading file line by line. Every line contains four fields, id,
* date, winning numbers and joker of a draw, respectively. For every
* reading line, check if date is less than upper date bound and more
* than lower date bound, simultaneously. If that indeed happend, save
* draws data in a struct of type draw and put it in head of a list.
* Repeat until find either EOF, or date of a draw is less than lower
* date bound.
*/
do{
if (feof(rf_ptr))
break;
fscanf(rf_ptr, "%s%s%s%s", id_str, date_str, win_nums_str, joker_str);
date_fnd = date_to_int(date_str);
if ((dt->ub_date_req >= date_fnd) && (dt->lb_date_req <= date_fnd)){
new_draw = (draw_ptr)malloc(sizeof(struct draw));
assert(new_draw);
new_draw->id = atoi(id_str);
strcpy(new_draw->date, date_str);
win_nums = winnums_to_int(win_nums_str);
if (win_nums == NULL)
return NULL;
for (arr_pos = 0; arr_pos < WNAL; arr_pos++){
new_draw->nums[arr_pos] = win_nums[arr_pos];
}
free(win_nums);
new_draw->joker = atoi(joker_str);
new_draw->winners = 0;
new_draw->next = NULL;
new_draw->previous = NULL;
if (list_head == NULL)
list_head = new_draw;
else{
list_head->previous = new_draw;
new_draw->next = list_head;
list_head = list_head->previous;
}
}
} while (date_fnd >= dt->lb_date_req);
/* if not found any draw */
if (list_head == NULL){
if (dt->lb_date_req != dt->ub_date_req)
printf("\n Sorry! No draws were held between DATEs %s & %s", dt->lb_date_req_str, dt->ub_date_req_str);
else
printf("\n Sorry! No draw was held on DATE %s", dt->ub_date_req_str);
}
return list_head;
}