time.c 57.1 KB
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/*
 * msvcrt.dll date/time functions
 *
 * Copyright 1996,1998 Marcus Meissner
 * Copyright 1996 Jukka Iivonen
 * Copyright 1997,2000 Uwe Bonnes
 * Copyright 2000 Jon Griffiths
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 * Copyright 2004 Hans Leidekker
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 *
 * This library 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 (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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 */
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#include "config.h"

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#include <stdlib.h>
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#include "msvcrt.h"
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#include "mtdll.h"
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#include "winbase.h"
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#include "winnls.h"
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#include "winternl.h"
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#include "wine/debug.h"
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#include "wine/unicode.h"
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WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
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BOOL WINAPI GetDaylightFlag(void);

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static LONGLONG init_time;

void msvcrt_init_clock(void)
{
    LARGE_INTEGER systime;

    NtQuerySystemTime(&systime);
    init_time = systime.QuadPart;
}

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static const int MonthLengths[2][12] =
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{
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    { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
    { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
};

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#if _MSVCR_VER>=140
static const int MAX_SECONDS = 60;
#else
static const int MAX_SECONDS = 59;
#endif

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static inline BOOL IsLeapYear(int Year)
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{
    return Year % 4 == 0 && (Year % 100 != 0 || Year % 400 == 0);
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}

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static inline void write_invalid_msvcrt_tm( struct MSVCRT_tm *tm )
{
    tm->tm_sec = -1;
    tm->tm_min = -1;
    tm->tm_hour = -1;
    tm->tm_mday = -1;
    tm->tm_mon = -1;
    tm->tm_year = -1;
    tm->tm_wday = -1;
    tm->tm_yday = -1;
    tm->tm_isdst = -1;
}

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/*********************************************************************
 *		_daylight (MSVCRT.@)
 */
int MSVCRT___daylight = 1;

/*********************************************************************
 *		_timezone (MSVCRT.@)
 */
MSVCRT_long MSVCRT___timezone = 28800;

/*********************************************************************
 *		_dstbias (MSVCRT.@)
 */
int MSVCRT__dstbias = -3600;

/*********************************************************************
 *		_tzname (MSVCRT.@)
 * NOTES
 *  Some apps (notably Mozilla) insist on writing to these, so the buffer
 *  must be large enough.
 */
static char tzname_std[64] = "PST";
static char tzname_dst[64] = "PDT";
char *MSVCRT__tzname[2] = { tzname_std, tzname_dst };

static TIME_ZONE_INFORMATION tzi = {0};
/*********************************************************************
 *		_tzset (MSVCRT.@)
 */
void CDECL MSVCRT__tzset(void)
{
    char *tz = MSVCRT_getenv("TZ");
    BOOL error;

    _mlock(_TIME_LOCK);
    if(tz && tz[0]) {
        BOOL neg_zone = FALSE;

        memset(&tzi, 0, sizeof(tzi));

        /* Parse timezone information: tzn[+|-]hh[:mm[:ss]][dzn] */
        lstrcpynA(MSVCRT__tzname[0], tz, 3);
        tz += 3;

        if(*tz == '-') {
            neg_zone = TRUE;
            tz++;
        }else if(*tz == '+') {
            tz++;
        }
        MSVCRT___timezone = strtol(tz, &tz, 10)*3600;
        if(*tz == ':') {
            MSVCRT___timezone += strtol(tz+1, &tz, 10)*60;
            if(*tz == ':')
                MSVCRT___timezone += strtol(tz+1, &tz, 10);
        }
        if(neg_zone)
            MSVCRT___timezone = -MSVCRT___timezone;

        MSVCRT___daylight = *tz;
        lstrcpynA(MSVCRT__tzname[1], tz, 3);
    }else if(GetTimeZoneInformation(&tzi) != TIME_ZONE_ID_INVALID) {
        MSVCRT___timezone = tzi.Bias*60;
        if(tzi.StandardDate.wMonth)
            MSVCRT___timezone += tzi.StandardBias*60;

        if(tzi.DaylightDate.wMonth) {
            MSVCRT___daylight = 1;
            MSVCRT__dstbias = (tzi.DaylightBias-tzi.StandardBias)*60;
        }else {
            MSVCRT___daylight = 0;
            MSVCRT__dstbias = 0;
        }

        if(!WideCharToMultiByte(CP_ACP, 0, tzi.StandardName, -1, MSVCRT__tzname[0],
                    sizeof(tzname_std), NULL, &error) || error)
            *MSVCRT__tzname[0] = 0;
        if(!WideCharToMultiByte(CP_ACP, 0, tzi.DaylightName, -1, MSVCRT__tzname[1],
                    sizeof(tzname_dst), NULL, &error) || error)
            *MSVCRT__tzname[0] = 0;
    }
    _munlock(_TIME_LOCK);
}

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static void _tzset_init(void)
{
    static BOOL init = FALSE;

    if(!init) {
        _mlock(_TIME_LOCK);
        if(!init) {
            MSVCRT__tzset();
            init = TRUE;
        }
        _munlock(_TIME_LOCK);
    }
}

static BOOL is_dst(const SYSTEMTIME *st)
{
    TIME_ZONE_INFORMATION tmp;
    SYSTEMTIME out;

    if(!MSVCRT___daylight)
        return FALSE;

    if(tzi.DaylightDate.wMonth) {
        tmp = tzi;
    }else if(st->wYear >= 2007) {
        memset(&tmp, 0, sizeof(tmp));
        tmp.StandardDate.wMonth = 11;
        tmp.StandardDate.wDay = 1;
        tmp.StandardDate.wHour = 2;
        tmp.DaylightDate.wMonth = 3;
        tmp.DaylightDate.wDay = 2;
        tmp.DaylightDate.wHour = 2;
    }else {
        memset(&tmp, 0, sizeof(tmp));
        tmp.StandardDate.wMonth = 10;
        tmp.StandardDate.wDay = 5;
        tmp.StandardDate.wHour = 2;
        tmp.DaylightDate.wMonth = 4;
        tmp.DaylightDate.wDay = 1;
        tmp.DaylightDate.wHour = 2;
    }

    tmp.Bias = 0;
    tmp.StandardBias = 0;
    tmp.DaylightBias = MSVCRT__dstbias/60;
    if(!SystemTimeToTzSpecificLocalTime(&tmp, st, &out))
        return FALSE;

    return memcmp(st, &out, sizeof(SYSTEMTIME));
}

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#define SECSPERDAY        86400
/* 1601 to 1970 is 369 years plus 89 leap days */
#define SECS_1601_TO_1970  ((369 * 365 + 89) * (ULONGLONG)SECSPERDAY)
#define TICKSPERSEC       10000000
#define TICKSPERMSEC      10000
#define TICKS_1601_TO_1970 (SECS_1601_TO_1970 * TICKSPERSEC)

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static MSVCRT___time64_t mktime_helper(struct MSVCRT_tm *mstm, BOOL local)
{
    SYSTEMTIME st;
    FILETIME ft;
    MSVCRT___time64_t ret = 0;
    int i;
    BOOL use_dst = FALSE;

    ret = mstm->tm_year + mstm->tm_mon/12;
    mstm->tm_mon %= 12;
    if(mstm->tm_mon < 0) {
        mstm->tm_mon += 12;
        ret--;
    }

    if(ret<70 || ret>1100) {
        *MSVCRT__errno() = MSVCRT_EINVAL;
        return -1;
    }

    memset(&st, 0, sizeof(SYSTEMTIME));
    st.wDay = 1;
    st.wMonth = mstm->tm_mon+1;
    st.wYear = ret+1900;

    if(!SystemTimeToFileTime(&st, &ft)) {
        *MSVCRT__errno() = MSVCRT_EINVAL;
        return -1;
    }

    ret = ((MSVCRT___time64_t)ft.dwHighDateTime<<32)+ft.dwLowDateTime;
    ret += (MSVCRT___time64_t)mstm->tm_sec*TICKSPERSEC;
    ret += (MSVCRT___time64_t)mstm->tm_min*60*TICKSPERSEC;
    ret += (MSVCRT___time64_t)mstm->tm_hour*60*60*TICKSPERSEC;
    ret += (MSVCRT___time64_t)(mstm->tm_mday-1)*SECSPERDAY*TICKSPERSEC;

    ft.dwLowDateTime = ret & 0xffffffff;
    ft.dwHighDateTime = ret >> 32;
    FileTimeToSystemTime(&ft, &st);

    if(local) {
        _tzset_init();
        use_dst = is_dst(&st);
        if((mstm->tm_isdst<=-1 && use_dst) || (mstm->tm_isdst>=1)) {
            SYSTEMTIME tmp;

            ret += (MSVCRT___time64_t)MSVCRT__dstbias*TICKSPERSEC;

            ft.dwLowDateTime = ret & 0xffffffff;
            ft.dwHighDateTime = ret >> 32;
            FileTimeToSystemTime(&ft, &tmp);

            if(!is_dst(&tmp)) {
                st = tmp;
                use_dst = FALSE;
            }else {
                use_dst = TRUE;
            }
        }else if(mstm->tm_isdst==0 && use_dst) {
            ret -= (MSVCRT___time64_t)MSVCRT__dstbias*TICKSPERSEC;
            ft.dwLowDateTime = ret & 0xffffffff;
            ft.dwHighDateTime = ret >> 32;
            FileTimeToSystemTime(&ft, &st);
            ret += (MSVCRT___time64_t)MSVCRT__dstbias*TICKSPERSEC;
        }
        ret += (MSVCRT___time64_t)MSVCRT___timezone*TICKSPERSEC;
    }

    mstm->tm_sec = st.wSecond;
    mstm->tm_min = st.wMinute;
    mstm->tm_hour = st.wHour;
    mstm->tm_mday = st.wDay;
    mstm->tm_mon = st.wMonth-1;
    mstm->tm_year = st.wYear-1900;
    mstm->tm_wday = st.wDayOfWeek;
    for(i=mstm->tm_yday=0; i<st.wMonth-1; i++)
        mstm->tm_yday += MonthLengths[IsLeapYear(st.wYear)][i];
    mstm->tm_yday += st.wDay-1;
    mstm->tm_isdst = use_dst ? 1 : 0;

    if(ret < TICKS_1601_TO_1970) {
        *MSVCRT__errno() = MSVCRT_EINVAL;
        return -1;
    }
    ret = (ret-TICKS_1601_TO_1970)/TICKSPERSEC;
    return ret;
}

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/**********************************************************************
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 *		_mktime64 (MSVCRT.@)
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 */
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MSVCRT___time64_t CDECL MSVCRT__mktime64(struct MSVCRT_tm *mstm)
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{
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    return mktime_helper(mstm, TRUE);
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}

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/**********************************************************************
 *		_mktime32 (MSVCRT.@)
 */
MSVCRT___time32_t CDECL MSVCRT__mktime32(struct MSVCRT_tm *mstm)
{
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    MSVCRT___time64_t ret = MSVCRT__mktime64( mstm );
    return ret == (MSVCRT___time32_t)ret ? ret : -1;
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}

/**********************************************************************
 *		mktime (MSVCRT.@)
 */
#ifdef _WIN64
MSVCRT___time64_t CDECL MSVCRT_mktime(struct MSVCRT_tm *mstm)
{
    return MSVCRT__mktime64( mstm );
}
#else
MSVCRT___time32_t CDECL MSVCRT_mktime(struct MSVCRT_tm *mstm)
{
    return MSVCRT__mktime32( mstm );
}
#endif

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/**********************************************************************
 *		_mkgmtime64 (MSVCRT.@)
 *
 * time->tm_isdst value is ignored
 */
MSVCRT___time64_t CDECL MSVCRT__mkgmtime64(struct MSVCRT_tm *time)
{
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    return mktime_helper(time, FALSE);
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}

/**********************************************************************
 *		_mkgmtime32 (MSVCRT.@)
 */
MSVCRT___time32_t CDECL MSVCRT__mkgmtime32(struct MSVCRT_tm *time)
{
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    MSVCRT___time64_t ret = MSVCRT__mkgmtime64(time);
    return ret == (MSVCRT___time32_t)ret ? ret : -1;
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}

/**********************************************************************
 *		_mkgmtime (MSVCRT.@)
 */
#ifdef _WIN64
MSVCRT___time64_t CDECL MSVCRT__mkgmtime(struct MSVCRT_tm *time)
{
    return MSVCRT__mkgmtime64(time);
}
#else
MSVCRT___time32_t CDECL MSVCRT__mkgmtime(struct MSVCRT_tm *time)
{
    return MSVCRT__mkgmtime32(time);
}
#endif

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/*********************************************************************
 *      _localtime64_s (MSVCRT.@)
 */
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int CDECL _localtime64_s(struct MSVCRT_tm *res, const MSVCRT___time64_t *secs)
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{
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    int i;
    FILETIME ft;
    SYSTEMTIME st;
    ULONGLONG time;
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    if (!res || !secs || *secs < 0 || *secs > _MAX__TIME64_T)
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    {
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        if (res)
            write_invalid_msvcrt_tm(res);
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        *MSVCRT__errno() = MSVCRT_EINVAL;
        return MSVCRT_EINVAL;
    }

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    _tzset_init();
    time = (*secs - MSVCRT___timezone) * (ULONGLONG)TICKSPERSEC + TICKS_1601_TO_1970;
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    ft.dwHighDateTime = (UINT)(time >> 32);
    ft.dwLowDateTime  = (UINT)time;
    FileTimeToSystemTime(&ft, &st);

    res->tm_isdst = is_dst(&st) ? 1 : 0;
    if(res->tm_isdst) {
        time -= MSVCRT__dstbias * (ULONGLONG)TICKSPERSEC;
        ft.dwHighDateTime = (UINT)(time >> 32);
        ft.dwLowDateTime  = (UINT)time;
        FileTimeToSystemTime(&ft, &st);
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    }

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    res->tm_sec  = st.wSecond;
    res->tm_min  = st.wMinute;
    res->tm_hour = st.wHour;
    res->tm_mday = st.wDay;
    res->tm_year = st.wYear - 1900;
    res->tm_mon  = st.wMonth - 1;
    res->tm_wday = st.wDayOfWeek;
    for (i = res->tm_yday = 0; i < st.wMonth - 1; i++)
        res->tm_yday += MonthLengths[IsLeapYear(st.wYear)][i];
    res->tm_yday += st.wDay - 1;

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    return 0;
}

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/*********************************************************************
 *      _localtime64 (MSVCRT.@)
 */
struct MSVCRT_tm* CDECL MSVCRT__localtime64(const MSVCRT___time64_t* secs)
{
    thread_data_t *data = msvcrt_get_thread_data();

    if(!data->time_buffer)
        data->time_buffer = MSVCRT_malloc(sizeof(struct MSVCRT_tm));

    if(_localtime64_s(data->time_buffer, secs))
        return NULL;
    return data->time_buffer;
}

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/*********************************************************************
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 *      _localtime32 (MSVCRT.@)
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 */
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struct MSVCRT_tm* CDECL MSVCRT__localtime32(const MSVCRT___time32_t* secs)
{
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    MSVCRT___time64_t secs64;

    if(!secs)
        return NULL;

    secs64 = *secs;
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    return MSVCRT__localtime64( &secs64 );
}

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/*********************************************************************
 *      _localtime32_s (MSVCRT.@)
 */
int CDECL _localtime32_s(struct MSVCRT_tm *time, const MSVCRT___time32_t *secs)
{
    MSVCRT___time64_t secs64;

    if (!time || !secs || *secs < 0)
    {
        if (time)
            write_invalid_msvcrt_tm(time);

        *MSVCRT__errno() = MSVCRT_EINVAL;
        return MSVCRT_EINVAL;
    }

    secs64 = *secs;
    return _localtime64_s(time, &secs64);
}

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/*********************************************************************
 *      localtime (MSVCRT.@)
 */
#ifdef _WIN64
struct MSVCRT_tm* CDECL MSVCRT_localtime(const MSVCRT___time64_t* secs)
{
    return MSVCRT__localtime64( secs );
}
#else
struct MSVCRT_tm* CDECL MSVCRT_localtime(const MSVCRT___time32_t* secs)
{
    return MSVCRT__localtime32( secs );
}
#endif

/*********************************************************************
 *      _gmtime64 (MSVCRT.@)
 */
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int CDECL MSVCRT__gmtime64_s(struct MSVCRT_tm *res, const MSVCRT___time64_t *secs)
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{
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    int i;
    FILETIME ft;
    SYSTEMTIME st;
    ULONGLONG time;

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    if (!res || !secs || *secs < 0 || *secs > _MAX__TIME64_T) {
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        if (res) {
            write_invalid_msvcrt_tm(res);
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        }

        *MSVCRT__errno() = MSVCRT_EINVAL;
        return MSVCRT_EINVAL;
    }
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    time = *secs * (ULONGLONG)TICKSPERSEC + TICKS_1601_TO_1970;
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    ft.dwHighDateTime = (UINT)(time >> 32);
    ft.dwLowDateTime  = (UINT)time;
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    FileTimeToSystemTime(&ft, &st);
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    res->tm_sec  = st.wSecond;
    res->tm_min  = st.wMinute;
    res->tm_hour = st.wHour;
    res->tm_mday = st.wDay;
    res->tm_year = st.wYear - 1900;
    res->tm_mon  = st.wMonth - 1;
    res->tm_wday = st.wDayOfWeek;
    for (i = res->tm_yday = 0; i < st.wMonth - 1; i++) {
        res->tm_yday += MonthLengths[IsLeapYear(st.wYear)][i];
    }
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    res->tm_yday += st.wDay - 1;
    res->tm_isdst = 0;
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    return 0;
}
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/*********************************************************************
 *      _gmtime64 (MSVCRT.@)
 */
struct MSVCRT_tm* CDECL MSVCRT__gmtime64(const MSVCRT___time64_t *secs)
{
    thread_data_t * const data = msvcrt_get_thread_data();

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    if(!data->time_buffer)
        data->time_buffer = MSVCRT_malloc(sizeof(struct MSVCRT_tm));

    if(MSVCRT__gmtime64_s(data->time_buffer, secs))
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        return NULL;
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    return data->time_buffer;
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}

/*********************************************************************
 *      _gmtime32_s (MSVCRT.@)
 */
int CDECL MSVCRT__gmtime32_s(struct MSVCRT_tm *res, const MSVCRT___time32_t *secs)
{
    MSVCRT___time64_t secs64;

    if(secs) {
        secs64 = *secs;
        return MSVCRT__gmtime64_s(res, &secs64);
    }
    return MSVCRT__gmtime64_s(res, NULL);
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}

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/*********************************************************************
 *      _gmtime32 (MSVCRT.@)
 */
struct MSVCRT_tm* CDECL MSVCRT__gmtime32(const MSVCRT___time32_t* secs)
{
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    MSVCRT___time64_t secs64;

    if(!secs)
        return NULL;

    secs64 = *secs;
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    return MSVCRT__gmtime64( &secs64 );
}

/*********************************************************************
 *      gmtime (MSVCRT.@)
 */
#ifdef _WIN64
struct MSVCRT_tm* CDECL MSVCRT_gmtime(const MSVCRT___time64_t* secs)
{
    return MSVCRT__gmtime64( secs );
}
#else
struct MSVCRT_tm* CDECL MSVCRT_gmtime(const MSVCRT___time32_t* secs)
{
    return MSVCRT__gmtime32( secs );
}
#endif

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/**********************************************************************
 *		_strdate (MSVCRT.@)
 */
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char* CDECL MSVCRT__strdate(char* date)
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{
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  static const char format[] = "MM'/'dd'/'yy";
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  GetDateFormatA(LOCALE_NEUTRAL, 0, NULL, format, date, 9);

  return date;
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}

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/**********************************************************************
 *              _strdate_s (MSVCRT.@)
 */
int CDECL _strdate_s(char* date, MSVCRT_size_t size)
{
    if(date && size)
        date[0] = '\0';

    if(!date) {
        *MSVCRT__errno() = MSVCRT_EINVAL;
        return MSVCRT_EINVAL;
    }

    if(size < 9) {
        *MSVCRT__errno() = MSVCRT_ERANGE;
        return MSVCRT_ERANGE;
    }

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    MSVCRT__strdate(date);
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    return 0;
}

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/**********************************************************************
 *		_wstrdate (MSVCRT.@)
 */
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MSVCRT_wchar_t* CDECL MSVCRT__wstrdate(MSVCRT_wchar_t* date)
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{
  static const WCHAR format[] = { 'M','M','\'','/','\'','d','d','\'','/','\'','y','y',0 };

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  GetDateFormatW(LOCALE_NEUTRAL, 0, NULL, format, date, 9);
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  return date;
}

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/**********************************************************************
 *              _wstrdate_s (MSVCRT.@)
 */
int CDECL _wstrdate_s(MSVCRT_wchar_t* date, MSVCRT_size_t size)
{
    if(date && size)
        date[0] = '\0';

    if(!date) {
        *MSVCRT__errno() = MSVCRT_EINVAL;
        return MSVCRT_EINVAL;
    }

    if(size < 9) {
        *MSVCRT__errno() = MSVCRT_ERANGE;
        return MSVCRT_ERANGE;
    }

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    MSVCRT__wstrdate(date);
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    return 0;
}

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/*********************************************************************
 *		_strtime (MSVCRT.@)
 */
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char* CDECL MSVCRT__strtime(char* time)
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{
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  static const char format[] = "HH':'mm':'ss";
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  GetTimeFormatA(LOCALE_NEUTRAL, 0, NULL, format, time, 9); 
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  return time;
}

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/*********************************************************************
 *              _strtime_s (MSVCRT.@)
 */
int CDECL _strtime_s(char* time, MSVCRT_size_t size)
{
    if(time && size)
        time[0] = '\0';

    if(!time) {
        *MSVCRT__errno() = MSVCRT_EINVAL;
        return MSVCRT_EINVAL;
    }

    if(size < 9) {
        *MSVCRT__errno() = MSVCRT_ERANGE;
        return MSVCRT_ERANGE;
    }

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    MSVCRT__strtime(time);
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    return 0;
}

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/*********************************************************************
 *		_wstrtime (MSVCRT.@)
 */
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MSVCRT_wchar_t* CDECL MSVCRT__wstrtime(MSVCRT_wchar_t* time)
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{
  static const WCHAR format[] = { 'H','H','\'',':','\'','m','m','\'',':','\'','s','s',0 };

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  GetTimeFormatW(LOCALE_NEUTRAL, 0, NULL, format, time, 9);
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  return time;
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}

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/*********************************************************************
 *              _wstrtime_s (MSVCRT.@)
 */
int CDECL _wstrtime_s(MSVCRT_wchar_t* time, MSVCRT_size_t size)
{
    if(time && size)
        time[0] = '\0';

    if(!time) {
        *MSVCRT__errno() = MSVCRT_EINVAL;
        return MSVCRT_EINVAL;
    }

    if(size < 9) {
        *MSVCRT__errno() = MSVCRT_ERANGE;
        return MSVCRT_ERANGE;
    }

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    MSVCRT__wstrtime(time);
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    return 0;
}

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/*********************************************************************
 *		clock (MSVCRT.@)
 */
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MSVCRT_clock_t CDECL MSVCRT_clock(void)
730
{
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    LARGE_INTEGER systime;
732

733
    NtQuerySystemTime(&systime);
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    return (systime.QuadPart - init_time) / (TICKSPERSEC / MSVCRT_CLOCKS_PER_SEC);
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}

/*********************************************************************
738
 *		_difftime64 (MSVCRT.@)
739
 */
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double CDECL MSVCRT__difftime64(MSVCRT___time64_t time1, MSVCRT___time64_t time2)
741
{
742
  return (double)(time1 - time2);
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}

/*********************************************************************
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 *		_difftime32 (MSVCRT.@)
747
 */
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double CDECL MSVCRT__difftime32(MSVCRT___time32_t time1, MSVCRT___time32_t time2)
{
  return (double)(time1 - time2);
}

/*********************************************************************
 *		difftime (MSVCRT.@)
 */
#ifdef _WIN64
double CDECL MSVCRT_difftime(MSVCRT___time64_t time1, MSVCRT___time64_t time2)
{
    return MSVCRT__difftime64( time1, time2 );
}
#else
double CDECL MSVCRT_difftime(MSVCRT___time32_t time1, MSVCRT___time32_t time2)
{
    return MSVCRT__difftime32( time1, time2 );
}
#endif

/*********************************************************************
 *		_ftime64 (MSVCRT.@)
 */
void CDECL MSVCRT__ftime64(struct MSVCRT___timeb64 *buf)
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{
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  FILETIME ft;
  ULONGLONG time;

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  _tzset_init();

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  GetSystemTimeAsFileTime(&ft);

  time = ((ULONGLONG)ft.dwHighDateTime << 32) | ft.dwLowDateTime;

  buf->time = time / TICKSPERSEC - SECS_1601_TO_1970;
  buf->millitm = (time % TICKSPERSEC) / TICKSPERMSEC;
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  buf->timezone = MSVCRT___timezone / 60;
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  buf->dstflag = GetDaylightFlag();
786
}
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/*********************************************************************
 *		_ftime64_s (MSVCRT.@)
 */
int CDECL MSVCRT__ftime64_s(struct MSVCRT___timeb64 *buf)
{
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    if (!MSVCRT_CHECK_PMT( buf != NULL )) return MSVCRT_EINVAL;
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    MSVCRT__ftime64(buf);
    return 0;
}

798
/*********************************************************************
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 *		_ftime32 (MSVCRT.@)
800
 */
801
void CDECL MSVCRT__ftime32(struct MSVCRT___timeb32 *buf)
802
{
803
    struct MSVCRT___timeb64 buf64;
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    MSVCRT__ftime64( &buf64 );
    buf->time     = buf64.time;
    buf->millitm  = buf64.millitm;
    buf->timezone = buf64.timezone;
    buf->dstflag  = buf64.dstflag;
}
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/*********************************************************************
 *		_ftime32_s (MSVCRT.@)
 */
int CDECL MSVCRT__ftime32_s(struct MSVCRT___timeb32 *buf)
{
817
    if (!MSVCRT_CHECK_PMT( buf != NULL )) return MSVCRT_EINVAL;
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    MSVCRT__ftime32(buf);
    return 0;
}

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/*********************************************************************
 *		_ftime (MSVCRT.@)
 */
#ifdef _WIN64
void CDECL MSVCRT__ftime(struct MSVCRT___timeb64 *buf)
{
828
    MSVCRT__ftime64( buf );
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}
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#else
void CDECL MSVCRT__ftime(struct MSVCRT___timeb32 *buf)
{
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    MSVCRT__ftime32( buf );
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}
#endif

/*********************************************************************
 *		_time64 (MSVCRT.@)
 */
MSVCRT___time64_t CDECL MSVCRT__time64(MSVCRT___time64_t *buf)
{
    MSVCRT___time64_t curtime;
    struct MSVCRT___timeb64 tb;

    MSVCRT__ftime64(&tb);

    curtime = tb.time;
    return buf ? *buf = curtime : curtime;
}

/*********************************************************************
 *		_time32 (MSVCRT.@)
 */
MSVCRT___time32_t CDECL MSVCRT__time32(MSVCRT___time32_t *buf)
{
    MSVCRT___time32_t curtime;
    struct MSVCRT___timeb64 tb;

    MSVCRT__ftime64(&tb);

    curtime = tb.time;
    return buf ? *buf = curtime : curtime;
}

/*********************************************************************
 *		time (MSVCRT.@)
 */
#ifdef _WIN64
MSVCRT___time64_t CDECL MSVCRT_time(MSVCRT___time64_t* buf)
{
    return MSVCRT__time64( buf );
}
#else
MSVCRT___time32_t CDECL MSVCRT_time(MSVCRT___time32_t* buf)
{
    return MSVCRT__time32( buf );
}
#endif
879

880
/*********************************************************************
881
 *		__p__daylight (MSVCRT.@)
882
 */
883
int * CDECL MSVCRT___p__daylight(void)
884 885 886
{
	return &MSVCRT___daylight;
}
887

888
/*********************************************************************
889
 *		__p__dstbias (MSVCRT.@)
890
 */
891
int * CDECL MSVCRT___p__dstbias(void)
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{
    return &MSVCRT__dstbias;
}

896
#if _MSVCR_VER >= 80
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/*********************************************************************
 *              _get_dstbias (MSVCR80.@)
 */
int CDECL  MSVCRT__get_dstbias(int *seconds)
{
    if (!MSVCRT_CHECK_PMT(seconds != NULL)) return MSVCRT_EINVAL;
    *seconds = MSVCRT__dstbias;
    return 0;
}
906
#endif
907

908
/*********************************************************************
909
 *		__p__timezone (MSVCRT.@)
910
 */
911
MSVCRT_long * CDECL MSVCRT___p__timezone(void)
912 913 914 915
{
	return &MSVCRT___timezone;
}

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/*********************************************************************
 *		_get_tzname (MSVCRT.@)
 */
int CDECL MSVCRT__get_tzname(MSVCRT_size_t *ret, char *buf, MSVCRT_size_t bufsize, int index)
{
    char *timezone;

    switch(index)
    {
    case 0:
        timezone = tzname_std;
        break;
    case 1:
        timezone = tzname_dst;
        break;
    default:
        *MSVCRT__errno() = MSVCRT_EINVAL;
        return MSVCRT_EINVAL;
    }

    if(!ret || (!buf && bufsize > 0) || (buf && !bufsize))
    {
        *MSVCRT__errno() = MSVCRT_EINVAL;
        return MSVCRT_EINVAL;
    }

    *ret = strlen(timezone)+1;
    if(!buf && !bufsize)
        return 0;
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    if(*ret > bufsize)
    {
        buf[0] = 0;
        return MSVCRT_ERANGE;
    }
950 951 952 953 954

    strcpy(buf, timezone);
    return 0;
}

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/*********************************************************************
 *		__p_tzname (MSVCRT.@)
 */
958
char ** CDECL __p__tzname(void)
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{
	return MSVCRT__tzname;
}
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#if _MSVCR_VER <= 90
#define STRFTIME_CHAR char
#define STRFTIME_TD(td, name) td->str.names.name
#else
#define STRFTIME_CHAR MSVCRT_wchar_t
#define STRFTIME_TD(td, name) td->wstr.names.name
#endif

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#define strftime_str(a,b,c,d) strftime_nstr(a,b,c,d,MSVCRT_SIZE_MAX)
static inline BOOL strftime_nstr(STRFTIME_CHAR *str, MSVCRT_size_t *pos,
        MSVCRT_size_t max, const STRFTIME_CHAR *src, MSVCRT_size_t len)
974
{
975
    while(*src && len)
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    {
        if(*pos >= max) {
            *str = 0;
            *MSVCRT__errno() = MSVCRT_ERANGE;
            return FALSE;
        }
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        str[*pos] = *src;
        src++;
        *pos += 1;
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        len--;
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    }
    return TRUE;
}

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static inline BOOL strftime_int(STRFTIME_CHAR *str, MSVCRT_size_t *pos, MSVCRT_size_t max,
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        int src, int prec, int l, int h)
{
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#if _MSVCR_VER > 90
    static const WCHAR fmt[] = {'%','0','*','d',0};
#endif
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    MSVCRT_size_t len;

999
    if(!MSVCRT_CHECK_PMT(src>=l && src<=h)) {
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        *str = 0;
        return FALSE;
    }

1004
#if _MSVCR_VER <= 90
1005
    len = MSVCRT__snprintf(str+*pos, max-*pos, "%0*d", prec, src);
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#else
    len = MSVCRT__snwprintf(str+*pos, max-*pos, fmt, prec, src);
#endif
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    if(len == -1) {
        *str = 0;
        *MSVCRT__errno() = MSVCRT_ERANGE;
        return FALSE;
    }

    *pos += len;
    return TRUE;
}

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static inline BOOL strftime_format(STRFTIME_CHAR *str, MSVCRT_size_t *pos, MSVCRT_size_t max,
        const struct MSVCRT_tm *mstm, MSVCRT___lc_time_data *time_data, const STRFTIME_CHAR *format)
{
    MSVCRT_size_t count;
    BOOL ret = TRUE;

    while(*format && ret)
    {
        count = 1;
        while(format[0] == format[count]) count++;

        switch(*format) {
        case '\'':
            if(count % 2 == 0) break;

            format += count;
            count = 0;
            while(format[count] && format[count] != '\'') count++;

            ret = strftime_nstr(str, pos, max, format, count);
            if(!ret) return FALSE;
            if(format[count] == '\'') count++;
            break;
        case 'd':
1043 1044 1045 1046 1047 1048 1049 1050
            if(count > 2)
            {
                if(!MSVCRT_CHECK_PMT(mstm->tm_wday>=0 && mstm->tm_wday<=6))
                {
                    *str = 0;
                    return FALSE;
                }
            }
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            switch(count) {
            case 1:
            case 2:
1054
                ret = strftime_int(str, pos, max, mstm->tm_mday, count==1 ? 0 : 2, 1, 31);
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                break;
            case 3:
                ret = strftime_str(str, pos, max, STRFTIME_TD(time_data, short_wday)[mstm->tm_wday]);
                break;
            default:
                ret = strftime_nstr(str, pos, max, format, count-4);
                if(ret)
                    ret = strftime_str(str, pos, max, STRFTIME_TD(time_data, wday)[mstm->tm_wday]);
                break;
            }
            break;
        case 'M':
1067 1068 1069 1070 1071 1072 1073 1074
            if(count > 2)
            {
                if(!MSVCRT_CHECK_PMT(mstm->tm_mon>=0 && mstm->tm_mon<=11))
                {
                    *str = 0;
                    return FALSE;
                }
            }
1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120
            switch(count) {
            case 1:
            case 2:
                ret = strftime_int(str, pos, max, mstm->tm_mon+1, count==1 ? 0 : 2, 1, 12);
                break;
            case 3:
                ret = strftime_str(str, pos, max, STRFTIME_TD(time_data, short_mon)[mstm->tm_mon]);
                break;
            default:
                ret = strftime_nstr(str, pos, max, format, count-4);
                if(ret)
                    ret = strftime_str(str, pos, max, STRFTIME_TD(time_data, mon)[mstm->tm_mon]);
                break;
            }
            break;
        case 'y':
            if(count > 1)
            {
#if _MSVCR_VER>=140
                if(!MSVCRT_CHECK_PMT(mstm->tm_year >= -1900 && mstm->tm_year <= 8099))
#else
                if(!MSVCRT_CHECK_PMT(mstm->tm_year >= 0))
#endif
                {
                    *str = 0;
                    return FALSE;
                }
            }

            switch(count) {
            case 1:
                ret = strftime_nstr(str, pos, max, format, 1);
                break;
            case 2:
            case 3:
                ret = strftime_nstr(str, pos, max, format, count-2);
                if(ret)
                    ret = strftime_int(str, pos, max, (mstm->tm_year+1900)%100, 2, 0, 99);
                break;
            default:
                ret = strftime_nstr(str, pos, max, format, count-4);
                if(ret)
                    ret = strftime_int(str, pos, max, mstm->tm_year+1900, 4, 0, 9999);
                break;
            }
            break;
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        case 'h':
            if(!MSVCRT_CHECK_PMT(mstm->tm_hour>=0 && mstm->tm_hour<=23))
            {
                *str = 0;
                return FALSE;
            }
            if(count > 2)
                ret = strftime_nstr(str, pos, max, format, count-2);
            if(ret)
                ret = strftime_int(str, pos, max, (mstm->tm_hour + 11) % 12 + 1,
                        count == 1 ? 0 : 2, 1, 12);
            break;
        case 'H':
            if(count > 2)
                ret = strftime_nstr(str, pos, max, format, count-2);
            if(ret)
                ret = strftime_int(str, pos, max, mstm->tm_hour, count == 1 ? 0 : 2, 0, 23);
            break;
        case 'm':
            if(count > 2)
                ret = strftime_nstr(str, pos, max, format, count-2);
            if(ret)
                ret = strftime_int(str, pos, max, mstm->tm_min, count == 1 ? 0 : 2, 0, 59);
            break;
        case 's':
            if(count > 2)
                ret = strftime_nstr(str, pos, max, format, count-2);
            if(ret)
1149
                ret = strftime_int(str, pos, max, mstm->tm_sec, count == 1 ? 0 : 2, 0, MAX_SECONDS);
1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162
            break;
        case 'a':
        case 'A':
        case 't':
            if(!MSVCRT_CHECK_PMT(mstm->tm_hour>=0 && mstm->tm_hour<=23))
            {
                *str = 0;
                return FALSE;
            }
            ret = strftime_nstr(str, pos, max,
                    mstm->tm_hour < 12 ? STRFTIME_TD(time_data, am) : STRFTIME_TD(time_data, pm),
                    (*format == 't' && count == 1) ? 1 : MSVCRT_SIZE_MAX);
            break;
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        default:
            ret = strftime_nstr(str, pos, max, format, count);
            break;
        }
        format += count;
    }

    return ret;
}

1173
#if _MSVCR_VER>=140
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static inline BOOL strftime_tzdiff(STRFTIME_CHAR *str, MSVCRT_size_t *pos, MSVCRT_size_t max, BOOL is_dst)
{
    MSVCRT_long tz = MSVCRT___timezone + (is_dst ? MSVCRT__dstbias : 0);
    char sign;

    if(tz < 0) {
        sign = '+';
        tz = -tz;
    }else {
        sign = '-';
    }

    if(*pos < max)
        str[(*pos)++] = sign;
    if(!strftime_int(str, pos, max, tz/60/60, 2, 0, 99))
        return FALSE;
    return strftime_int(str, pos, max, tz/60%60, 2, 0, 59);
}
1192
#endif
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static MSVCRT_size_t strftime_impl(STRFTIME_CHAR *str, MSVCRT_size_t max,
        const STRFTIME_CHAR *format, const struct MSVCRT_tm *mstm,
        MSVCRT___lc_time_data *time_data, MSVCRT__locale_t loc)
1197 1198 1199
{
    MSVCRT_size_t ret, tmp;
    BOOL alternate;
1200
    int year = mstm ? mstm->tm_year + 1900 : -1;
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    if(!str || !format) {
        if(str && max)
            *str = 0;
        *MSVCRT__errno() = MSVCRT_EINVAL;
        return 0;
    }

    if(!time_data)
Piotr Caban's avatar
Piotr Caban committed
1210
        time_data = loc ? loc->locinfo->lc_time_curr : get_locinfo()->lc_time_curr;
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    for(ret=0; *format && ret<max; format++) {
        if(*format != '%') {
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1214
            if(MSVCRT__isleadbyte_l((unsigned char)*format, loc)) {
1215 1216
                str[ret++] = *(format++);
                if(ret == max) continue;
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                if(!MSVCRT_CHECK_PMT(str[ret]))
                    goto einval_error;
1219
            }
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            str[ret++] = *format;
            continue;
        }

        format++;
        if(*format == '#') {
            alternate = TRUE;
            format++;
        }else {
            alternate = FALSE;
        }

1232
        if(!MSVCRT_CHECK_PMT(mstm))
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            goto einval_error;

        switch(*format) {
        case 'c':
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#if _MSVCR_VER>=140
            if(time_data == &cloc_time_data && !alternate)
            {
                static const WCHAR datetime_format[] =
                        { '%','a',' ','%','b',' ','%','e',' ','%','T',' ','%','Y',0 };
                tmp = strftime_impl(str+ret, max-ret, datetime_format, mstm, time_data, loc);
                if(!tmp)
                    return 0;
                ret += tmp;
                break;
            }
#endif
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            if(!strftime_format(str, &ret, max, mstm, time_data,
                    alternate ? STRFTIME_TD(time_data, date) : STRFTIME_TD(time_data, short_date)))
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                return 0;
            if(ret < max)
                str[ret++] = ' ';
1254
            if(!strftime_format(str, &ret, max, mstm, time_data, STRFTIME_TD(time_data, time)))
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                return 0;
            break;
        case 'x':
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            if(!strftime_format(str, &ret, max, mstm, time_data,
                    alternate ? STRFTIME_TD(time_data, date) : STRFTIME_TD(time_data, short_date)))
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                return 0;
            break;
        case 'X':
1263
            if(!strftime_format(str, &ret, max, mstm, time_data, STRFTIME_TD(time_data, time)))
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                return 0;
            break;
        case 'a':
1267
            if(!MSVCRT_CHECK_PMT(mstm->tm_wday>=0 && mstm->tm_wday<=6))
1268
                goto einval_error;
1269
            if(!strftime_str(str, &ret, max, STRFTIME_TD(time_data, short_wday)[mstm->tm_wday]))
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                return 0;
            break;
        case 'A':
1273
            if(!MSVCRT_CHECK_PMT(mstm->tm_wday>=0 && mstm->tm_wday<=6))
1274
                goto einval_error;
1275
            if(!strftime_str(str, &ret, max, STRFTIME_TD(time_data, wday)[mstm->tm_wday]))
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                return 0;
            break;
        case 'b':
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#if _MSVCR_VER>=140
        case 'h':
#endif
1282
            if(!MSVCRT_CHECK_PMT(mstm->tm_mon>=0 && mstm->tm_mon<=11))
1283
                goto einval_error;
1284
            if(!strftime_str(str, &ret, max, STRFTIME_TD(time_data, short_mon)[mstm->tm_mon]))
1285 1286 1287
                return 0;
            break;
        case 'B':
1288
            if(!MSVCRT_CHECK_PMT(mstm->tm_mon>=0 && mstm->tm_mon<=11))
1289
                goto einval_error;
1290
            if(!strftime_str(str, &ret, max, STRFTIME_TD(time_data, mon)[mstm->tm_mon]))
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                return 0;
            break;
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#if _MSVCR_VER>=140
        case 'C':
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            if(!MSVCRT_CHECK_PMT(year>=0 && year<=9999))
                goto einval_error;
            if(!strftime_int(str, &ret, max, year/100, alternate ? 0 : 2, 0, 99))
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                return 0;
            break;
#endif
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        case 'd':
1302
            if(!strftime_int(str, &ret, max, mstm->tm_mday, alternate ? 0 : 2, 1, 31))
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                return 0;
            break;
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#if _MSVCR_VER>=140
        case 'D':
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            if(!MSVCRT_CHECK_PMT(year>=0 && year<=9999))
                goto einval_error;
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            if(!strftime_int(str, &ret, max, mstm->tm_mon+1, alternate ? 0 : 2, 1, 12))
                return 0;
            if(ret < max)
                str[ret++] = '/';
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            if(!strftime_int(str, &ret, max, mstm->tm_mday, alternate ? 0 : 2, 1, 31))
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                return 0;
            if(ret < max)
                str[ret++] = '/';
1317
            if(!strftime_int(str, &ret, max, year%100, alternate ? 0 : 2, 0, 99))
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                return 0;
            break;
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        case 'e':
1321
            if(!strftime_int(str, &ret, max, mstm->tm_mday, alternate ? 0 : 2, 1, 31))
1322 1323 1324 1325
                return 0;
            if(!alternate && str[ret-2] == '0')
                str[ret-2] = ' ';
            break;
1326
        case 'F':
1327
            if(!strftime_int(str, &ret, max, year, alternate ? 0 : 4, 0, 9999))
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                return 0;
            if(ret < max)
                str[ret++] = '-';
            if(!strftime_int(str, &ret, max, mstm->tm_mon+1, alternate ? 0 : 2, 1, 12))
                return 0;
            if(ret < max)
                str[ret++] = '-';
1335
            if(!strftime_int(str, &ret, max, mstm->tm_mday, alternate ? 0 : 2, 1, 31))
1336 1337
                return 0;
            break;
1338
        case 'g':
1339
        case 'G':
1340 1341
            if(!MSVCRT_CHECK_PMT(year>=0 && year<=9999))
                goto einval_error;
1342
            /* fall through */
1343 1344 1345 1346 1347 1348 1349 1350 1351
        case 'V':
        {
            int iso_year = year;
            int iso_days = mstm->tm_yday - (mstm->tm_wday ? mstm->tm_wday : 7) + 4;
            if (iso_days < 0)
                iso_days += 365 + IsLeapYear(--iso_year);
            else if(iso_days >= 365 + IsLeapYear(iso_year))
                iso_days -= 365 + IsLeapYear(iso_year++);

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            if(*format == 'G') {
                if(!strftime_int(str, &ret, max, iso_year, 4, 0, 9999))
                    return 0;
            } else if(*format == 'g') {
                if(!strftime_int(str, &ret, max, iso_year%100, 2, 0, 99))
                    return 0;
            } else {
                if(!strftime_int(str, &ret, max, iso_days/7 + 1, alternate ? 0 : 2, 0, 53))
                    return 0;
            }
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            break;
        }
1364
#endif
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        case 'H':
            if(!strftime_int(str, &ret, max, mstm->tm_hour, alternate ? 0 : 2, 0, 23))
                return 0;
            break;
        case 'I':
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            if(!MSVCRT_CHECK_PMT(mstm->tm_hour>=0 && mstm->tm_hour<=23))
                goto einval_error;
            if(!strftime_int(str, &ret, max, (mstm->tm_hour + 11) % 12 + 1,
                        alternate ? 0 : 2, 1, 12))
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                return 0;
            break;
        case 'j':
            if(!strftime_int(str, &ret, max, mstm->tm_yday+1, alternate ? 0 : 3, 1, 366))
                return 0;
            break;
        case 'm':
            if(!strftime_int(str, &ret, max, mstm->tm_mon+1, alternate ? 0 : 2, 1, 12))
                return 0;
            break;
        case 'M':
            if(!strftime_int(str, &ret, max, mstm->tm_min, alternate ? 0 : 2, 0, 59))
                return 0;
            break;
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#if _MSVCR_VER>=140
        case 'n':
            str[ret++] = '\n';
            break;
#endif
1393
        case 'p':
1394
            if(!MSVCRT_CHECK_PMT(mstm->tm_hour>=0 && mstm->tm_hour<=23))
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                goto einval_error;
            if(!strftime_str(str, &ret, max, mstm->tm_hour<12 ?
1397
                        STRFTIME_TD(time_data, am) : STRFTIME_TD(time_data, pm)))
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                return 0;
            break;
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#if _MSVCR_VER>=140
1401
        case 'r':
1402
            if(time_data == &cloc_time_data)
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            {
                if(!MSVCRT_CHECK_PMT(mstm->tm_hour>=0 && mstm->tm_hour<=23))
                    goto einval_error;
                if(!strftime_int(str, &ret, max, (mstm->tm_hour + 11) % 12 + 1,
                            alternate ? 0 : 2, 1, 12))
                    return 0;
                if(ret < max)
                    str[ret++] = ':';
                if(!strftime_int(str, &ret, max, mstm->tm_min, alternate ? 0 : 2, 0, 59))
                    return 0;
                if(ret < max)
                    str[ret++] = ':';
                if(!strftime_int(str, &ret, max, mstm->tm_sec, alternate ? 0 : 2, 0, MAX_SECONDS))
                    return 0;
                if(ret < max)
                    str[ret++] = ' ';
                if(!strftime_str(str, &ret, max, mstm->tm_hour<12 ?
                            STRFTIME_TD(time_data, am) : STRFTIME_TD(time_data, pm)))
                    return 0;
            }
            else
            {
                if(!strftime_format(str, &ret, max, mstm, time_data, STRFTIME_TD(time_data, time)))
                    return 0;
            }
            break;
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        case 'R':
            if(!strftime_int(str, &ret, max, mstm->tm_hour, alternate ? 0 : 2, 0, 23))
                return 0;
            if(ret < max)
                str[ret++] = ':';
            if(!strftime_int(str, &ret, max, mstm->tm_min, alternate ? 0 : 2, 0, 59))
                return 0;
            break;
#endif
1438
        case 'S':
1439
            if(!strftime_int(str, &ret, max, mstm->tm_sec, alternate ? 0 : 2, 0, MAX_SECONDS))
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                return 0;
            break;
1442
#if _MSVCR_VER>=140
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        case 't':
            str[ret++] = '\t';
            break;
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        case 'T':
            if(!strftime_int(str, &ret, max, mstm->tm_hour, alternate ? 0 : 2, 0, 23))
                return 0;
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            if(ret < max)
                str[ret++] = ':';
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            if(!strftime_int(str, &ret, max, mstm->tm_min, alternate ? 0 : 2, 0, 59))
                return 0;
1453 1454
            if(ret < max)
                str[ret++] = ':';
1455
            if(!strftime_int(str, &ret, max, mstm->tm_sec, alternate ? 0 : 2, 0, MAX_SECONDS))
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                return 0;
            break;
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        case 'u':
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            if(!MSVCRT_CHECK_PMT(mstm->tm_wday>=0 && mstm->tm_wday<=6))
                goto einval_error;
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            tmp = mstm->tm_wday ? mstm->tm_wday : 7;
            if(!strftime_int(str, &ret, max, tmp, 0, 1, 7))
                return 0;
            break;
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#endif
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        case 'w':
            if(!strftime_int(str, &ret, max, mstm->tm_wday, 0, 0, 6))
                return 0;
            break;
        case 'y':
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#if _MSVCR_VER>=140
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            if(!MSVCRT_CHECK_PMT(year>=0 && year<=9999))
1473
#else
1474
            if(!MSVCRT_CHECK_PMT(year>=1900))
1475
#endif
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                goto einval_error;
            if(!strftime_int(str, &ret, max, year%100, alternate ? 0 : 2, 0, 99))
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                return 0;
            break;
        case 'Y':
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            if(!strftime_int(str, &ret, max, year, alternate ? 0 : 4, 0, 9999))
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                return 0;
            break;
        case 'z':
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#if _MSVCR_VER>=140
            MSVCRT__tzset();
            if(!strftime_tzdiff(str, &ret, max, mstm->tm_isdst))
                return 0;
            break;
#endif
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        case 'Z':
            MSVCRT__tzset();
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#if _MSVCR_VER <= 90
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            if(MSVCRT__get_tzname(&tmp, str+ret, max-ret, mstm->tm_isdst ? 1 : 0))
                return 0;
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#else
                if(MSVCRT__mbstowcs_s_l(&tmp, str+ret, max-ret,
                            mstm->tm_isdst ? tzname_dst : tzname_std,
                            MSVCRT__TRUNCATE, loc) == MSVCRT_STRUNCATE)
                    ret = max;
#endif
1502
            ret += tmp-1;
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            break;
        case 'U':
        case 'W':
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            if(!MSVCRT_CHECK_PMT(mstm->tm_wday>=0 && mstm->tm_wday<=6))
                goto einval_error;
            if(!MSVCRT_CHECK_PMT(mstm->tm_yday>=0 && mstm->tm_yday<=365))
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                goto einval_error;
            if(*format == 'U')
                tmp = mstm->tm_wday;
            else if(!mstm->tm_wday)
                tmp = 6;
            else
                tmp = mstm->tm_wday-1;

            tmp = mstm->tm_yday/7 + (tmp<=mstm->tm_yday%7);
            if(!strftime_int(str, &ret, max, tmp, alternate ? 0 : 2, 0, 53))
                return 0;
            break;
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        case '%':
            str[ret++] = '%';
            break;
        default:
            WARN("unknown format %c\n", *format);
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            MSVCRT_INVALID_PMT("unknown format", MSVCRT_EINVAL);
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            goto einval_error;
        }
    }

    if(ret == max) {
        if(max)
            *str = 0;
        *MSVCRT__errno() = MSVCRT_ERANGE;
        return 0;
    }

    str[ret] = 0;
    return ret;

einval_error:
    *str = 0;
    return 0;
}

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static MSVCRT_size_t strftime_helper(char *str, MSVCRT_size_t max, const char *format,
        const struct MSVCRT_tm *mstm, MSVCRT___lc_time_data *time_data, MSVCRT__locale_t loc)
{
#if _MSVCR_VER <= 90
    TRACE("(%p %ld %s %p %p %p)\n", str, max, format, mstm, time_data, loc);
    return strftime_impl(str, max, format, mstm, time_data, loc);
#else
    MSVCRT_wchar_t *s, *fmt;
    MSVCRT_size_t len;

    TRACE("(%p %ld %s %p %p %p)\n", str, max, format, mstm, time_data, loc);

    if (!MSVCRT_CHECK_PMT(str != NULL)) return 0;
    if (!MSVCRT_CHECK_PMT(max != 0)) return 0;
    *str = 0;
    if (!MSVCRT_CHECK_PMT(format != NULL)) return 0;

    len = MSVCRT__mbstowcs_l( NULL, format, 0, loc ) + 1;
    if (!len || !(fmt = MSVCRT_malloc( len*sizeof(MSVCRT_wchar_t) ))) return 0;
    MSVCRT__mbstowcs_l(fmt, format, len, loc);

    if ((s = MSVCRT_malloc( max*sizeof(MSVCRT_wchar_t) )))
    {
        len = strftime_impl( s, max, fmt, mstm, time_data, loc );
        if (len)
            len = MSVCRT__wcstombs_l( str, s, max, loc );
        MSVCRT_free( s );
    }
    else len = 0;

    MSVCRT_free( fmt );
    return len;
#endif
}

1581
#if _MSVCR_VER >= 80
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/********************************************************************
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 *     _strftime_l (MSVCR80.@)
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 */
MSVCRT_size_t CDECL MSVCRT__strftime_l( char *str, MSVCRT_size_t max, const char *format,
        const struct MSVCRT_tm *mstm, MSVCRT__locale_t loc )
{
    return strftime_helper(str, max, format, mstm, NULL, loc);
}
1590
#endif
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/*********************************************************************
 *		_Strftime (MSVCRT.@)
 */
MSVCRT_size_t CDECL _Strftime(char *str, MSVCRT_size_t max, const char *format,
        const struct MSVCRT_tm *mstm, MSVCRT___lc_time_data *time_data)
{
    return strftime_helper(str, max, format, mstm, time_data, NULL);
}

1601
/*********************************************************************
1602 1603
 *		strftime (MSVCRT.@)
 */
1604 1605
MSVCRT_size_t CDECL MSVCRT_strftime( char *str, MSVCRT_size_t max, const char *format,
                                     const struct MSVCRT_tm *mstm )
1606
{
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    return strftime_helper(str, max, format, mstm, NULL, NULL);
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}

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static MSVCRT_size_t wcsftime_helper( MSVCRT_wchar_t *str, MSVCRT_size_t max,
        const MSVCRT_wchar_t *format, const struct MSVCRT_tm *mstm,
        MSVCRT___lc_time_data *time_data, MSVCRT__locale_t loc )
1613
{
1614
#if _MSVCR_VER <= 90
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    char *s, *fmt;
    MSVCRT_size_t len;
1617

1618
    TRACE("%p %ld %s %p %p %p\n", str, max, debugstr_w(format), mstm, time_data, loc);
1619

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    len = MSVCRT__wcstombs_l( NULL, format, 0, loc ) + 1;
1621
    if (!(fmt = MSVCRT_malloc( len ))) return 0;
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    MSVCRT__wcstombs_l(fmt, format, len, loc);
1623 1624 1625

    if ((s = MSVCRT_malloc( max*4 )))
    {
1626
        if (!strftime_impl( s, max*4, fmt, mstm, time_data, loc )) s[0] = 0;
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        len = MSVCRT__mbstowcs_l( str, s, max, loc );
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        MSVCRT_free( s );
    }
    else len = 0;

    MSVCRT_free( fmt );
    return len;
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#else
    TRACE("%p %ld %s %p %p %p\n", str, max, debugstr_w(format), mstm, time_data, loc);
    return strftime_impl(str, max, format, mstm, time_data, loc);
#endif
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}

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/*********************************************************************
 *              _wcsftime_l (MSVCRT.@)
 */
MSVCRT_size_t CDECL MSVCRT__wcsftime_l( MSVCRT_wchar_t *str, MSVCRT_size_t max,
        const MSVCRT_wchar_t *format, const struct MSVCRT_tm *mstm, MSVCRT__locale_t loc )
{
    return wcsftime_helper(str, max, format, mstm, NULL, loc);
}

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/*********************************************************************
 *     wcsftime (MSVCRT.@)
 */
MSVCRT_size_t CDECL MSVCRT_wcsftime( MSVCRT_wchar_t *str, MSVCRT_size_t max,
                                     const MSVCRT_wchar_t *format, const struct MSVCRT_tm *mstm )
{
1655 1656 1657
    return wcsftime_helper(str, max, format, mstm, NULL, NULL);
}

1658
#if _MSVCR_VER >= 110
1659
/*********************************************************************
1660
 *		_Wcsftime (MSVCR110.@)
1661 1662 1663 1664 1665 1666
 */
MSVCRT_size_t CDECL _Wcsftime(MSVCRT_wchar_t *str, MSVCRT_size_t max,
        const MSVCRT_wchar_t *format, const struct MSVCRT_tm *mstm,
        MSVCRT___lc_time_data *time_data)
{
    return wcsftime_helper(str, max, format, mstm, time_data, NULL);
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}
1668
#endif
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static char* asctime_buf(char *buf, const struct MSVCRT_tm *mstm)
{
    static const char wday[7][4] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
    static const char month[12][4] = {"Jan", "Feb", "Mar", "Apr", "May",
        "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};

1676
    if (!mstm || mstm->tm_sec<0 || mstm->tm_sec>59
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            || mstm->tm_min<0 || mstm->tm_min>59
            || mstm->tm_hour<0 || mstm->tm_hour>23
            || mstm->tm_mon<0 || mstm->tm_mon>11
            || mstm->tm_wday<0 || mstm->tm_wday>6
            || mstm->tm_year<0 || mstm->tm_mday<0
            || mstm->tm_mday>MonthLengths[IsLeapYear(1900+mstm->tm_year)][mstm->tm_mon]) {
        *MSVCRT__errno() = MSVCRT_EINVAL;
        return NULL;
    }

1687 1688 1689 1690 1691 1692
#if _MSVCR_VER>=140
    /* C89 (4.12.3.1) uses space-padding for day of month. */
    MSVCRT__snprintf(buf, 26, "%s %s %2d %02d:%02d:%02d %c%03d\n", wday[mstm->tm_wday],
            month[mstm->tm_mon], mstm->tm_mday, mstm->tm_hour, mstm->tm_min,
            mstm->tm_sec, '1'+(mstm->tm_year+900)/1000, (900+mstm->tm_year)%1000);
#else
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    MSVCRT__snprintf(buf, 26, "%s %s %02d %02d:%02d:%02d %c%03d\n", wday[mstm->tm_wday],
            month[mstm->tm_mon], mstm->tm_mday, mstm->tm_hour, mstm->tm_min,
            mstm->tm_sec, '1'+(mstm->tm_year+900)/1000, (900+mstm->tm_year)%1000);
1696
#endif
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    return buf;
}

1700 1701 1702
/*********************************************************************
 *		asctime (MSVCRT.@)
 */
1703
char * CDECL MSVCRT_asctime(const struct MSVCRT_tm *mstm)
1704 1705 1706
{
    thread_data_t *data = msvcrt_get_thread_data();

1707 1708 1709 1710 1711 1712 1713 1714
    /* asctime returns date in format that always has exactly 26 characters */
    if (!data->asctime_buffer) {
        data->asctime_buffer = MSVCRT_malloc(26);
        if (!data->asctime_buffer) {
            *MSVCRT__errno() = MSVCRT_ENOMEM;
            return NULL;
        }
    }
1715

1716
    return asctime_buf(data->asctime_buffer, mstm);
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}

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/*********************************************************************
 *      asctime_s (MSVCRT.@)
 */
int CDECL MSVCRT_asctime_s(char* time, MSVCRT_size_t size, const struct MSVCRT_tm *mstm)
{
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    if (!MSVCRT_CHECK_PMT(time != NULL)) return MSVCRT_EINVAL;
    if (size) time[0] = 0;
    if (!MSVCRT_CHECK_PMT(size >= 26)) return MSVCRT_EINVAL;
    if (!MSVCRT_CHECK_PMT(mstm != NULL)) return MSVCRT_EINVAL;
    if (!MSVCRT_CHECK_PMT(mstm->tm_sec >= 0 && mstm->tm_sec < 60)) return MSVCRT_EINVAL;
    if (!MSVCRT_CHECK_PMT(mstm->tm_min >= 0 && mstm->tm_min < 60)) return MSVCRT_EINVAL;
    if (!MSVCRT_CHECK_PMT(mstm->tm_hour >= 0 && mstm->tm_hour < 24)) return MSVCRT_EINVAL;
    if (!MSVCRT_CHECK_PMT(mstm->tm_mon >= 0 && mstm->tm_mon < 12)) return MSVCRT_EINVAL;
    if (!MSVCRT_CHECK_PMT(mstm->tm_wday >= 0 && mstm->tm_wday < 7)) return MSVCRT_EINVAL;
    if (!MSVCRT_CHECK_PMT(mstm->tm_year >= 0)) return MSVCRT_EINVAL;
    if (!MSVCRT_CHECK_PMT(mstm->tm_mday >= 0)) return MSVCRT_EINVAL;
    if (!MSVCRT_CHECK_PMT(mstm->tm_mday <= MonthLengths[IsLeapYear(1900+mstm->tm_year)][mstm->tm_mon])) return MSVCRT_EINVAL;
1736

1737
    asctime_buf(time, mstm);
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    return 0;
}

1741 1742
/*********************************************************************
 *		_wasctime (MSVCRT.@)
1743
 */
1744
MSVCRT_wchar_t * CDECL MSVCRT__wasctime(const struct MSVCRT_tm *mstm)
1745
{
1746
    thread_data_t *data = msvcrt_get_thread_data();
1747
    char buffer[26];
1748

1749 1750 1751 1752 1753 1754 1755
    if(!data->wasctime_buffer) {
        data->wasctime_buffer = MSVCRT_malloc(26*sizeof(MSVCRT_wchar_t));
        if(!data->wasctime_buffer) {
            *MSVCRT__errno() = MSVCRT_ENOMEM;
            return NULL;
        }
    }
1756

1757 1758 1759 1760
    if(!asctime_buf(buffer, mstm))
        return NULL;

    MultiByteToWideChar(CP_ACP, 0, buffer, -1, data->wasctime_buffer, 26);
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    return data->wasctime_buffer;
}

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/*********************************************************************
 *      _wasctime_s (MSVCRT.@)
 */
int CDECL MSVCRT__wasctime_s(MSVCRT_wchar_t* time, MSVCRT_size_t size, const struct MSVCRT_tm *mstm)
{
1769 1770
    char buffer[26];
    int ret;
1771

1772 1773 1774 1775
    if (!MSVCRT_CHECK_PMT(time != NULL)) return MSVCRT_EINVAL;
    if (size) time[0] = 0;
    if (!MSVCRT_CHECK_PMT(size >= 26)) return MSVCRT_EINVAL;
    if (!MSVCRT_CHECK_PMT(mstm != NULL)) return MSVCRT_EINVAL;
1776

1777
    ret = MSVCRT_asctime_s(buffer, sizeof(buffer), mstm);
1778
    if(ret)
1779 1780
        return ret;
    MultiByteToWideChar(CP_ACP, 0, buffer, -1, time, size);
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    return 0;
}

1784
/*********************************************************************
1785 1786 1787 1788 1789 1790 1791 1792 1793 1794
 *		_ctime64 (MSVCRT.@)
 */
char * CDECL MSVCRT__ctime64(const MSVCRT___time64_t *time)
{
    struct MSVCRT_tm *t;
    t = MSVCRT__localtime64( time );
    if (!t) return NULL;
    return MSVCRT_asctime( t );
}

1795 1796 1797 1798 1799 1800
/*********************************************************************
 *		_ctime64_s (MSVCRT.@)
 */
int CDECL MSVCRT__ctime64_s(char *res, MSVCRT_size_t len, const MSVCRT___time64_t *time)
{
    struct MSVCRT_tm *t;
1801 1802 1803

    if (!MSVCRT_CHECK_PMT( res != NULL )) return MSVCRT_EINVAL;
    if (!MSVCRT_CHECK_PMT( len >= 26 )) return MSVCRT_EINVAL;
1804
    res[0] = '\0';
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    if (!MSVCRT_CHECK_PMT( time != NULL )) return MSVCRT_EINVAL;
    if (!MSVCRT_CHECK_PMT( *time > 0 )) return MSVCRT_EINVAL;

1808 1809 1810 1811 1812
    t = MSVCRT__localtime64( time );
    strcpy( res, MSVCRT_asctime( t ) );
    return 0;
}

1813 1814
/*********************************************************************
 *		_ctime32 (MSVCRT.@)
1815
 */
1816
char * CDECL MSVCRT__ctime32(const MSVCRT___time32_t *time)
1817
{
1818
    struct MSVCRT_tm *t;
1819
    t = MSVCRT__localtime32( time );
1820 1821
    if (!t) return NULL;
    return MSVCRT_asctime( t );
1822 1823
}

1824 1825 1826 1827 1828 1829
/*********************************************************************
 *		_ctime32_s (MSVCRT.@)
 */
int CDECL MSVCRT__ctime32_s(char *res, MSVCRT_size_t len, const MSVCRT___time32_t *time)
{
    struct MSVCRT_tm *t;
1830 1831 1832

    if (!MSVCRT_CHECK_PMT( res != NULL )) return MSVCRT_EINVAL;
    if (!MSVCRT_CHECK_PMT( len >= 26 )) return MSVCRT_EINVAL;
1833
    res[0] = '\0';
1834 1835 1836
    if (!MSVCRT_CHECK_PMT( time != NULL )) return MSVCRT_EINVAL;
    if (!MSVCRT_CHECK_PMT( *time > 0 )) return MSVCRT_EINVAL;

1837 1838 1839 1840 1841
    t = MSVCRT__localtime32( time );
    strcpy( res, MSVCRT_asctime( t ) );
    return 0;
}

1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872
/*********************************************************************
 *		ctime (MSVCRT.@)
 */
#ifdef _WIN64
char * CDECL MSVCRT_ctime(const MSVCRT___time64_t *time)
{
    return MSVCRT__ctime64( time );
}
#else
char * CDECL MSVCRT_ctime(const MSVCRT___time32_t *time)
{
    return MSVCRT__ctime32( time );
}
#endif

/*********************************************************************
 *		_wctime64 (MSVCRT.@)
 */
MSVCRT_wchar_t * CDECL MSVCRT__wctime64(const MSVCRT___time64_t *time)
{
    return MSVCRT__wasctime( MSVCRT__localtime64(time) );
}

/*********************************************************************
 *		_wctime32 (MSVCRT.@)
 */
MSVCRT_wchar_t * CDECL MSVCRT__wctime32(const MSVCRT___time32_t *time)
{
    return MSVCRT__wasctime( MSVCRT__localtime32(time) );
}

1873 1874 1875
/*********************************************************************
 *		_wctime (MSVCRT.@)
 */
1876 1877
#ifdef _WIN64
MSVCRT_wchar_t * CDECL MSVCRT__wctime(const MSVCRT___time64_t *time)
1878
{
1879
    return MSVCRT__wctime64( time );
1880
}
1881 1882 1883 1884 1885 1886
#else
MSVCRT_wchar_t * CDECL MSVCRT__wctime(const MSVCRT___time32_t *time)
{
    return MSVCRT__wctime32( time );
}
#endif
1887

1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932
/*********************************************************************
 *              _wctime64_s (MSVCRT.@)
 */
int CDECL MSVCRT__wctime64_s(MSVCRT_wchar_t *buf,
        MSVCRT_size_t size, const MSVCRT___time64_t *time)
{
    struct MSVCRT_tm tm;
    int ret;

    if(!MSVCRT_CHECK_PMT(buf != NULL)) return MSVCRT_EINVAL;
    if(!MSVCRT_CHECK_PMT(size != 0)) return MSVCRT_EINVAL;
    buf[0] = 0;
    if(!MSVCRT_CHECK_PMT(time != NULL)) return MSVCRT_EINVAL;
    if(!MSVCRT_CHECK_PMT(*time >= 0)) return MSVCRT_EINVAL;
    if(!MSVCRT_CHECK_PMT(*time <= _MAX__TIME64_T)) return MSVCRT_EINVAL;

    ret = _localtime64_s(&tm, time);
    if(ret != 0)
        return ret;

    return MSVCRT__wasctime_s(buf, size, &tm);
}

/*********************************************************************
 *              _wctime32_s (MSVCRT.@)
 */
int CDECL MSVCRT__wctime32_s(MSVCRT_wchar_t *buf, MSVCRT_size_t size,
        const MSVCRT___time32_t *time)
{
    struct MSVCRT_tm tm;
    int ret;

    if(!MSVCRT_CHECK_PMT(buf != NULL)) return MSVCRT_EINVAL;
    if(!MSVCRT_CHECK_PMT(size != 0)) return MSVCRT_EINVAL;
    buf[0] = 0;
    if(!MSVCRT_CHECK_PMT(time != NULL)) return MSVCRT_EINVAL;
    if(!MSVCRT_CHECK_PMT(*time >= 0)) return MSVCRT_EINVAL;

    ret = _localtime32_s(&tm, time);
    if(ret != 0)
        return ret;

    return MSVCRT__wasctime_s(buf, size, &tm);
}

1933 1934
#if _MSVCR_VER >= 80

1935
/*********************************************************************
1936
 * _get_timezone (MSVCR80.@)
1937 1938 1939 1940 1941 1942 1943 1944 1945 1946
 */
int CDECL _get_timezone(LONG *timezone)
{
    if(!MSVCRT_CHECK_PMT(timezone != NULL)) return MSVCRT_EINVAL;

    *timezone = MSVCRT___timezone;
    return 0;
}

/*********************************************************************
1947
 * _get_daylight (MSVCR80.@)
1948 1949 1950 1951 1952 1953 1954 1955
 */
int CDECL _get_daylight(int *hours)
{
    if(!MSVCRT_CHECK_PMT(hours != NULL)) return MSVCRT_EINVAL;

    *hours = MSVCRT___daylight;
    return 0;
}
1956 1957

#endif /* _MSVCR_VER >= 80 */
1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010

#if _MSVCR_VER >= 140

#define TIME_UTC 1

struct _timespec32
{
    MSVCRT___time32_t tv_sec;
    LONG tv_nsec;
};

struct _timespec64
{
    MSVCRT___time64_t tv_sec;
    LONG tv_nsec;
};

/*********************************************************************
 * _timespec64_get (UCRTBASE.@)
 */
int CDECL _timespec64_get(struct _timespec64 *ts, int base)
{
    ULONGLONG time;
    FILETIME ft;

    if(!MSVCRT_CHECK_PMT(ts != NULL)) return 0;
    if(base != TIME_UTC) return 0;

    GetSystemTimePreciseAsFileTime(&ft);
    time = ((ULONGLONG)ft.dwHighDateTime << 32) | ft.dwLowDateTime;

    ts->tv_sec = time / TICKSPERSEC - SECS_1601_TO_1970;
    ts->tv_nsec = time % TICKSPERSEC * 100;
    return base;
}

/*********************************************************************
 * _timespec32_get (UCRTBASE.@)
 */
int CDECL _timespec32_get(struct _timespec32 *ts, int base)
{
    struct _timespec64 ts64;

    if(_timespec64_get(&ts64, base) != base)
        return 0;
    if(ts64.tv_sec != (MSVCRT___time32_t)ts64.tv_sec)
        return 0;

    ts->tv_sec = ts64.tv_sec;
    ts->tv_nsec = ts64.tv_nsec;
    return base;
}
#endif /* _MSVCR_VER >= 140 */