e65025b501
The public header files are moved to a new subdirectory, to separate the definition of the public interface from the actual implementation. Using an identical directory layout as the final installation has the advantage that the example code can be build outside the project tree without any modifications to the #include statements.
131 lines
2.5 KiB
C
131 lines
2.5 KiB
C
/*
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* libdivecomputer
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*
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* Copyright (C) 2010 Jef Driesen
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301 USA
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <time.h>
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#include <libdivecomputer/datetime.h>
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static struct tm *
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dc_localtime_r (const time_t *t, struct tm *tm)
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{
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#ifdef HAVE_LOCALTIME_R
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return localtime_r (t, tm);
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#else
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struct tm *p = localtime (t);
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if (p == NULL)
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return NULL;
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if (tm)
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*tm = *p;
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return tm;
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#endif
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}
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static struct tm *
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dc_gmtime_r (const time_t *t, struct tm *tm)
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{
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#ifdef HAVE_GMTIME_R
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return gmtime_r (t, tm);
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#else
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struct tm *p = gmtime (t);
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if (p == NULL)
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return NULL;
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if (tm)
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*tm = *p;
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return tm;
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#endif
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}
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dc_ticks_t
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dc_datetime_now (void)
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{
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return time (NULL);
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}
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dc_datetime_t *
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dc_datetime_localtime (dc_datetime_t *result,
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dc_ticks_t ticks)
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{
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time_t t = ticks;
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struct tm tm;
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if (dc_localtime_r (&t, &tm) == NULL)
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return NULL;
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if (result) {
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result->year = tm.tm_year + 1900;
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result->month = tm.tm_mon + 1;
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result->day = tm.tm_mday;
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result->hour = tm.tm_hour;
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result->minute = tm.tm_min;
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result->second = tm.tm_sec;
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}
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return result;
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}
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dc_datetime_t *
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dc_datetime_gmtime (dc_datetime_t *result,
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dc_ticks_t ticks)
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{
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time_t t = ticks;
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struct tm tm;
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if (dc_gmtime_r (&t, &tm) == NULL)
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return NULL;
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if (result) {
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result->year = tm.tm_year + 1900;
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result->month = tm.tm_mon + 1;
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result->day = tm.tm_mday;
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result->hour = tm.tm_hour;
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result->minute = tm.tm_min;
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result->second = tm.tm_sec;
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}
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return result;
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}
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dc_ticks_t
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dc_datetime_mktime (dc_datetime_t *dt)
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{
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if (dt == NULL)
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return -1;
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struct tm tm;
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tm.tm_year = dt->year - 1900;
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tm.tm_mon = dt->month - 1;
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tm.tm_mday = dt->day;
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tm.tm_hour = dt->hour;
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tm.tm_min = dt->minute;
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tm.tm_sec = dt->second;
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tm.tm_isdst = -1;
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return mktime (&tm);
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}
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