localtime_r.c 1.69 KB
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/*****************************************************************************
 * localtime_r.c: POSIX localtime_r() replacement
 *****************************************************************************
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 * Copyright © 1998-2015 VLC authors and VideoLAN
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 *
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 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
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 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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Jean-Baptiste Kempf committed
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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 * GNU 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 License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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 *****************************************************************************/

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#if defined(__STDC_LIB_EXT1__) && (__STDC_LIB_EXT1__ >= 20112L)
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# define __STDC_WANT_LIB_EXT1__ 1
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#else
# define __STDC_WANT_LIB_EXT1__ 0
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#endif
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#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

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#include <errno.h>
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#include <time.h>

/* If localtime_r() is not provided, we assume localtime() uses
 * thread-specific storage. */
struct tm *localtime_r (const time_t *timep, struct tm *result)
{
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#if (__STDC_WANT_LIB_EXT1__)
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    return localtime_s(timep, result);
#elif defined (_WIN32)
    return ((errno = localtime_s(result, timep)) == 0) ? result : NULL;
#else
# warning localtime_r() not implemented!
    return gmtime_r(timep, result);
#endif
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}