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// SPDX-FileCopyrightText: 1991-1994, Julianne Frances Haugh
// SPDX-FileCopyrightText: 1996-1999, Marek Michałkiewicz
// SPDX-FileCopyrightText: 2003-2005, Tomasz Kłoczko
// SPDX-FileCopyrightText: 2008, Nicolas François
// SPDX-FileCopyrightText: 2025, Alejandro Colomar <alx@kernel.org>
// SPDX-FileCopyrightText: 2025, "Haelwenn (lanodan) Monnier" <contact@hacktivis.me>
// SPDX-License-Identifier: BSD-3-Clause
#include <config.h>
#include <stddef.h>
#include <time.h>
#include "atoi/str2i.h"
#include "defines.h"
#include "prototypes.h"
#include "string/strcmp/streq.h"
static long get_date(const char *s);
static long dategm(struct tm *tm);
// string parse-to day-since-Epoch
long
strtoday(const char *str)
{
long d;
if (NULL == str || streq(str, ""))
return -1;
/* If a numerical value is provided, this is already a number of
* days since EPOCH.
*/
if (str2sl(&d, str) == 0)
return d;
d = get_date(str);
if (d == -1)
return -2;
return d;
}
static long
get_date(const char *s)
{
time_t t;
struct tm tm;
const char *p;
t = 0;
if (gmtime_r(&t, &tm) == NULL)
return -1;
p = strptime(s, "%Y-%m-%d", &tm);
if (p == NULL || !streq(p, ""))
return -1;
return dategm(&tm);
}
static long
dategm(struct tm *tm)
{
time_t t;
t = timegm(tm);
if (t == (time_t) -1)
return -1;
return t / DAY;
}
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