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81 lines
1.7 KiB
C
81 lines
1.7 KiB
C
/*
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* COPYRIGHT: LGPL, See LGPL.txt in the top level directory
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* PROJECT: ReactOS CRT library
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* FILE: lib/sdk/crt/time/localtime.c
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* PURPOSE: Implementation of localtime, localtime_s
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* PROGRAMERS: Timo Kreuzer
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* Samuel Serapión
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*/
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#include <precomp.h>
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#include <time.h>
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#include "bitsfixup.h"
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//fix me: header?
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#define _MAX__TIME64_T 0x793406fffLL /* number of seconds from
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00:00:00, 01/01/1970 UTC to
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23:59:59. 12/31/3000 UTC */
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errno_t
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localtime_s(struct tm* _tm, const time_t *ptime)
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{
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/* check for NULL */
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if (!_tm || !ptime )
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{
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if(_tm) memset(_tm, 0xFF, sizeof(struct tm));
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_invalid_parameter(NULL,
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0,//__FUNCTION__,
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_CRT_WIDE(__FILE__),
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__LINE__,
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0);
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_set_errno(EINVAL);
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return EINVAL;
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}
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/* Validate input */
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if (*ptime < 0 || *ptime > _MAX__TIME64_T)
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{
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memset(_tm, 0xFF, sizeof(struct tm));
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_set_errno(EINVAL);
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return EINVAL;
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}
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_tm = localtime(ptime);
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return 0;
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}
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extern char _tz_is_set;
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struct tm *
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localtime(const time_t *ptime)
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{
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time_t time = *ptime;
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struct tm * ptm;
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/* Check for invalid time value */
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if (time < 0)
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{
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return 0;
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}
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/* Never without */
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if (!_tz_is_set)
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_tzset();
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/* Check for overflow */
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/* Correct for timezone */
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time -= _timezone;
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#if 0
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/* Correct for daylight saving */
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if (_isdstime(time))
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{
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ptm->tm_isdst = 1;
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time -= _dstbias;
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}
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#endif
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ptm = gmtime(&time);
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return ptm;
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}
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