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//========================================================================
//
// glibc.h
//
// Emulate various non-portable glibc functions.
//
// This file is licensed under the GPLv2 or later
//
// Copyright (C) 2016 Adrian Johnson <ajohnson@redneon.com>
//
//========================================================================
#include "glibc.h"
#ifndef HAVE_GMTIME_R
struct tm *gmtime_r(const time_t *timep, struct tm *result)
{
struct tm *gt;
gt = gmtime(timep);
if (gt)
*result = *gt;
return gt;
}
#endif
#ifndef HAVE_LOCALTIME_R
struct tm *localtime_r(const time_t *timep, struct tm *result)
{
struct tm *lt;
lt = localtime(timep);
*result = *lt;
return lt;
}
#endif
#ifndef HAVE_TIMEGM
// Get offset of local time from UTC in seconds. DST is ignored.
static time_t getLocalTimeZoneOffset()
{
time_t utc, local;
struct tm tm_utc;
time (&utc);
gmtime_r(&utc, &tm_utc);
local = mktime(&tm_utc);
return difftime(utc, local);
}
time_t timegm(struct tm *tm)
{
tm->tm_isdst = 0;
time_t t = mktime(tm);
if (t == -1)
return t;
t += getLocalTimeZoneOffset();
return t;
}
#endif
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