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142#include <errno.h>
#include <stdbool.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "./year2015/solutions.h"
int main(int argc, char** argv) {
int ch, day, year;
time_t t = time(NULL);
struct tm* timeinfo = localtime(&t);
year = timeinfo->tm_year + 1900; // tm_year is (year - 1900)
day = timeinfo->tm_mday;
if (timeinfo->tm_mon != 11) {
year--;
day = 25;
} else if (day > 25) {
day = 25;
}
while ((ch = getopt(argc, argv, ":y:d:h")) != -1) {
switch (ch) {
case 'y': {
char* endptr;
errno = 0;
year = (int)strtol(optarg, &endptr, 10);
if (endptr == optarg || *endptr != '\0' || errno == ERANGE) {
fprintf(stderr, "aoc: invalid year: %s\n", optarg);
return EXIT_FAILURE;
}
break;
}
case 'd': {
char* endptr;
errno = 0;
day = (int)strtol(optarg, &endptr, 10);
if (endptr == optarg || *endptr != '\0' || errno == ERANGE) {
fprintf(stderr, "aoc: invalid day: %s\n", optarg);
return EXIT_FAILURE;
}
break;
}
case ':':
fprintf(stderr, "aoc: option '-%c' requires an argument\n", optopt);
return EXIT_FAILURE;
case '?':
fprintf(stderr, "aoc: unknown flag: %c\n", optopt);
return EXIT_FAILURE;
case 'h':
default:
fprintf(stdout,
"Usage: %s [-y <year>] [-d <day>] [-t]\n"
"\n"
"Options:\n"
" -d <day> run solution for given day (default: %d)\n"
" -y <year> run solution for given year (default: %d)\n"
" -t run the test input instead\n",
argv[0], day, year);
return EXIT_SUCCESS;
}
}
const char* home = getenv("HOME");
if (!home) {
fprintf(stderr, "aoc: HOME environment variable not set\n");
return EXIT_FAILURE;
}
char fname[128];
snprintf(fname, sizeof(fname), "%s/.cache/aoc/%d/%d.txt", home, year, day);
struct stat file_stat;
if (stat(fname, &file_stat) != 0) {
if (errno == ENOENT) {
fprintf(stderr, "aoc: input file not found at: %s\n", fname);
fprintf(stderr, "aoc: download the input file from https://adventofcode.com/%d/day/%d/input\n", year, day);
return EXIT_FAILURE;
} else {
fprintf(stderr, "aoc: %s: %s\n", fname, strerror(errno));
return EXIT_FAILURE;
}
}
switch (year) {
case 2015:
switch (day) {
case 1:
return year2015_sol01(fname);
case 2:
return year2015_sol02(fname);
case 3:
return year2015_sol03(fname);
case 4:
return year2015_sol04();
case 5:
return year2015_sol05(fname);
case 6:
return year2015_sol06(fname);
case 7:
return year2015_sol07(fname);
case 8:
return year2015_sol08(fname);
case 9:
return year2015_sol09(fname);
case 10:
return year2015_sol10();
case 11:
return year2015_sol11();
case 12:
return year2015_sol12(fname);
case 13:
return year2015_sol13(fname);
case 14:
return year2015_sol14(fname);
case 15:
return year2015_sol15(fname);
case 16:
return year2015_sol16(fname);
case 17:
return year2015_sol17(fname);
case 18:
return year2015_sol18(fname);
case 20:
return year2015_sol20();
case 21:
return year2015_sol21();
case 23:
return year2015_sol23(fname);
}
break;
}
fprintf(stderr, "aoc: year %d: day %d: unsolved\n", year, day);
return EXIT_FAILURE;
}