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78 lines
1.3 KiB
C
78 lines
1.3 KiB
C
// SPDX-FileCopyrightText: 1991-1994, Julianne Frances Haugh
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// SPDX-FileCopyrightText: 1996-1999, Marek Michałkiewicz
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// SPDX-FileCopyrightText: 2003-2005, Tomasz Kłoczko
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// SPDX-FileCopyrightText: 2008, Nicolas François
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// SPDX-FileCopyrightText: 2025, Alejandro Colomar <alx@kernel.org>
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// SPDX-FileCopyrightText: 2025, "Haelwenn (lanodan) Monnier" <contact@hacktivis.me>
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// SPDX-License-Identifier: BSD-3-Clause
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#include "config.h"
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#include <stddef.h>
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#include <time.h>
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#include "atoi/a2i.h"
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#include "defines.h"
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#include "prototypes.h"
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#include "string/strcmp/streq.h"
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static long get_date(const char *s);
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static long dategm(struct tm *tm);
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// string parse-to day-since-Epoch
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long
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strtoday(const char *str)
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{
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long d;
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if (NULL == str || streq(str, ""))
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return -1;
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/* If a numerical value is provided, this is already a number of
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* days since EPOCH.
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*/
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if (str2sl(&d, str) == 0)
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return d;
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d = get_date(str);
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if (d == -1)
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return -2;
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return d;
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}
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static long
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get_date(const char *s)
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{
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time_t t;
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struct tm tm;
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const char *p;
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t = 0;
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if (gmtime_r(&t, &tm) == NULL)
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return -1;
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p = strptime(s, "%Y-%m-%d", &tm);
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if (p == NULL || !streq(p, ""))
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return -1;
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return dategm(&tm);
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}
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static long
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dategm(struct tm *tm)
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{
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time_t t;
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t = timegm(tm);
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if (t == (time_t) -1)
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return -1;
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return t / DAY;
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}
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