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/****************************************************************
* *
* Copyright (c) 2001-2021 Fidelity National Information *
* Services, Inc. and/or its subsidiaries. All rights reserved. *
* *
* This source code contains the intellectual property *
* of its copyright holder(s), and is made available *
* under a license. If you do not know the terms of *
* the license, please stop and do not read further. *
* *
****************************************************************/
#include "mdef.h"
#include "gtm_time.h"
#include <sys/time.h>
#include "dollarh.h"
#include "have_crit.h"
error_def(ERR_WEIRDSYSTIME);
long dollarh(time_t intime, uint4 *days, time_t *seconds)
{
gtm_int8 local_wall_time_in_gmt, seconds_since_m_epoch;
int isdst;
long offset;
struct tm *ttime;
GTM_LOCALTIME(ttime, &intime);
*seconds = (time_t)(ttime->tm_hour * HOUR) + (time_t)(ttime->tm_min * MINUTE) + (time_t)ttime->tm_sec;
# ifdef _BSD_SOURCE /* the BSD structure provides the UTC offset in seconds */
offset = -1L * ttime->tm_gmtoff; /* using 1L here and 1LL below makes 32 bit platforms OK */
# else /* otherwise have to calulate it */
isdst = ttime->tm_isdst;
GTM_GMTIME(ttime, &intime); /* recast intime to UTC */
ttime->tm_isdst = isdst;
GTM_MKTIME(local_wall_time_in_gmt, ttime); /* turn it back into seconds */
assert(local_wall_time_in_gmt != -1);
offset = local_wall_time_in_gmt - intime; /* subtract the original time to determine UTC offset */
# endif
seconds_since_m_epoch = (intime - offset) + (1LL * DAYS * ONEDAY);
if (seconds_since_m_epoch < 0)
RTS_ERROR_CSA_ABT(NULL, VARLSTCNT(1) ERR_WEIRDSYSTIME);
*days = (uint4)(seconds_since_m_epoch / ONEDAY); /* after adjusting for UTC we can get the days */
return offset;
}
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