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/*
* nanobbs, a tiny forums software.
* Copyright (C) 2025-2026 Xavier Del Campo Romero
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#define _POSIX_C_SOURCE 200809L
#include "utils.h"
#include <errno.h>
#include <limits.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
int getul(const char **const s, unsigned long *const out)
{
char *end;
unsigned long v;
errno = 0;
v = strtoul(*s, &end, 10);
if (errno)
{
fprintf(stderr, "%s: strtoul(3) %s: %s\n", __func__, *s,
strerror(errno));
return -1;
}
else if ((*end != '/' && *end) || v > LONG_MAX || !v)
{
fprintf(stderr, "%s: invalid number: %.*s\n", __func__,
(int)(end - *s), *s);
return -1;
}
*out = v;
*s = *end ? end + 1 : end;
return 0;
}
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