aoc/src/advent_utility.c

#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <md5.h>

#include "advent_utility.h"

struct Point new_Point(int x, int y) {
    struct Point p;
    p.x = x;
    p.y = y;
    return p;
}

struct Point *new_Point_p(int x, int y) {
    struct Point *p = malloc(sizeof(struct Point));
    p->x = x;
    p->y = y;
    return p;
}

int same_Point(const struct Point* a, const struct Point* b) {
    if (a->x == b->x && a->y == b->y) {
        return 1;
    }
    return 0;
}

int same_Point_v(const void *a, const void *b) {
    return same_Point((const struct Point *)a, (const struct Point *)b);
}

char *md5_str(const char* input) {
   unsigned char digest[16];
   struct MD5Context context;
   MD5Init(&context);
   MD5Update(&context, input, strlen(input));
   MD5Final(digest, &context);
   char *md5string = malloc(33);
   for(int i = 0; i < 16; ++i) {
       sprintf(&md5string[i*2], "%02x", (unsigned int)digest[i]);
   }
   return md5string;
}