#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "aocdailies.h" // prototypes for all aocYYYYdd functions!
#include "aocutils.h"
#define MAX_YEAR 2024
int main(int argc, char **argv) {
unsigned y = 0, d = 0;
char dataname[99];
if (argc >= 3) {
char *err;
y = strtoul(argv[1], &err, 10);
if (*err || (y < 2015) || (y > MAX_YEAR)) y = 0;
d = strtoul(argv[2], &err, 10);
if (*err || (d < 1) || (d > 25)) d = 0;
if (argc >= 4) {
sprintf(dataname, "%.98s", argv[3]);
} else {
sprintf(dataname, ".%04u%02u.txt", y, d);
}
}
if ((y == 0) || (d == 0)) {
fprintf(stderr, "syntax: %s yyyy dd [input-file]\n", argv[0]);
fprintf(stderr, " where 2015 <= yyyy <= %d\n", MAX_YEAR);
fprintf(stderr, " and 1 <= dd <= 25\n");
fprintf(stderr, "if no [input-file] is supplied loads the file .yyyydd.txt\n");
exit(EXIT_FAILURE);
}
// read data from dataname into input
char *input = NULL;
size_t ilen = slurp(&input, dataname);
// call the right function
aocfunc *p = aocselect(y, d);
if (p) p(input, ilen);
else fprintf(stderr, "Error: aoc%04u%02u() is missing.\n", y, d);
free(input);
}