78 lines
1.6 KiB
C
78 lines
1.6 KiB
C
/*
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* 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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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <config.h>
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#include <ctype.h>
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#ident "$Id$"
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#include "prototypes.h"
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#include "getdate.h"
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/*
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* strtoday() now uses get_date() (borrowed from GNU shellutils)
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* which can handle many date formats, for example:
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* 1970-09-17 # ISO 8601.
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* 70-9-17 # This century assumed by default.
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* 70-09-17 # Leading zeros are ignored.
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* 9/17/72 # Common U.S. writing.
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* 24 September 1972
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* 24 Sept 72 # September has a special abbreviation.
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* 24 Sep 72 # Three-letter abbreviations always allowed.
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* Sep 24, 1972
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* 24-sep-72
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* 24sep72
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*/
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long strtoday (const char *str)
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{
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time_t t;
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bool isnum = true;
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const char *s = str;
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/*
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* get_date() interprets an empty string as the current date,
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* which is not what we expect, unless you're a BOFH :-).
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* (useradd sets sp_expire = current date for new lusers)
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*/
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if ((NULL == str) || ('\0' == *str)) {
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return -1;
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}
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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 ('-' == *s) {
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s++;
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}
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while (' ' == *s) {
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s++;
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}
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while (isnum && ('\0' != *s)) {
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if (!isdigit (*s)) {
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isnum = false;
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}
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s++;
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}
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if (isnum) {
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long retdate;
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if (getlong (str, &retdate) == 0) {
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return -2;
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}
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return retdate;
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}
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t = get_date (str, NULL);
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if ((time_t) - 1 == t) {
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return -2;
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}
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/* convert seconds to days since 1970-01-01 */
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return (long) (t + DAY / 2) / DAY;
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}
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