463 lines
13 KiB
C
463 lines
13 KiB
C
/*
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* msvcrt.dll date/time functions
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*
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* Copyright 1996,1998 Marcus Meissner
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* Copyright 1996 Jukka Iivonen
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* Copyright 1997,2000 Uwe Bonnes
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* Copyright 2000 Jon Griffiths
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* Copyright 2004 Hans Leidekker
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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 St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "config.h"
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#define _POSIX_PTHREAD_SEMANTICS /* switch to a 2 arg style asctime_r on Solaris */
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#include <time.h>
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#ifdef HAVE_SYS_TIMES_H
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# include <sys/times.h>
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#endif
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#include <limits.h>
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#include "msvcrt.h"
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#include "winbase.h"
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#include "winnls.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
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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 },
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{ 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
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};
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static inline int IsLeapYear(int Year)
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{
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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 msvcrt_tm_to_unix( struct tm *dest, const struct MSVCRT_tm *src )
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{
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memset( dest, 0, sizeof(*dest) );
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dest->tm_sec = src->tm_sec;
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dest->tm_min = src->tm_min;
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dest->tm_hour = src->tm_hour;
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dest->tm_mday = src->tm_mday;
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dest->tm_mon = src->tm_mon;
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dest->tm_year = src->tm_year;
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dest->tm_wday = src->tm_wday;
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dest->tm_yday = src->tm_yday;
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dest->tm_isdst = src->tm_isdst;
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}
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static inline void unix_tm_to_msvcrt( struct MSVCRT_tm *dest, const struct tm *src )
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{
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memset( dest, 0, sizeof(*dest) );
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dest->tm_sec = src->tm_sec;
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dest->tm_min = src->tm_min;
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dest->tm_hour = src->tm_hour;
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dest->tm_mday = src->tm_mday;
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dest->tm_mon = src->tm_mon;
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dest->tm_year = src->tm_year;
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dest->tm_wday = src->tm_wday;
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dest->tm_yday = src->tm_yday;
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dest->tm_isdst = src->tm_isdst;
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}
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#define SECSPERDAY 86400
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/* 1601 to 1970 is 369 years plus 89 leap days */
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#define SECS_1601_TO_1970 ((369 * 365 + 89) * (ULONGLONG)SECSPERDAY)
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#define TICKSPERSEC 10000000
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#define TICKSPERMSEC 10000
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#define TICKS_1601_TO_1970 (SECS_1601_TO_1970 * TICKSPERSEC)
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/**********************************************************************
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* mktime (MSVCRT.@)
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*/
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MSVCRT_time_t CDECL MSVCRT_mktime(struct MSVCRT_tm *mstm)
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{
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time_t secs;
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struct tm tm;
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msvcrt_tm_to_unix( &tm, mstm );
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secs = mktime( &tm );
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unix_tm_to_msvcrt( mstm, &tm );
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return secs < 0 ? -1 : secs;
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}
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/*********************************************************************
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* localtime (MSVCRT.@)
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*/
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struct MSVCRT_tm* CDECL MSVCRT_localtime(const MSVCRT_time_t* secs)
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{
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struct tm tm;
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thread_data_t *data;
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time_t seconds = *secs;
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if (seconds < 0) return NULL;
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if (!localtime_r( &seconds, &tm )) return NULL;
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data = msvcrt_get_thread_data();
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unix_tm_to_msvcrt( &data->time_buffer, &tm );
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return &data->time_buffer;
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}
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/*********************************************************************
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* gmtime (MSVCRT.@)
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*/
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struct MSVCRT_tm* CDECL MSVCRT_gmtime(const MSVCRT_time_t* secs)
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{
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thread_data_t * const data = msvcrt_get_thread_data();
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int i;
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FILETIME ft;
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SYSTEMTIME st;
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ULONGLONG time = *secs * (ULONGLONG)TICKSPERSEC + TICKS_1601_TO_1970;
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ft.dwHighDateTime = (UINT)(time >> 32);
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ft.dwLowDateTime = (UINT)time;
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FileTimeToSystemTime(&ft, &st);
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if (st.wYear < 1970) return NULL;
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data->time_buffer.tm_sec = st.wSecond;
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data->time_buffer.tm_min = st.wMinute;
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data->time_buffer.tm_hour = st.wHour;
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data->time_buffer.tm_mday = st.wDay;
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data->time_buffer.tm_year = st.wYear - 1900;
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data->time_buffer.tm_mon = st.wMonth - 1;
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data->time_buffer.tm_wday = st.wDayOfWeek;
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for (i = data->time_buffer.tm_yday = 0; i < st.wMonth - 1; i++) {
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data->time_buffer.tm_yday += MonthLengths[IsLeapYear(st.wYear)][i];
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}
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data->time_buffer.tm_yday += st.wDay - 1;
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data->time_buffer.tm_isdst = 0;
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return &data->time_buffer;
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}
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/**********************************************************************
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* _strdate (MSVCRT.@)
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*/
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char* CDECL _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);
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return date;
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}
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/**********************************************************************
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* _wstrdate (MSVCRT.@)
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*/
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MSVCRT_wchar_t* CDECL _wstrdate(MSVCRT_wchar_t* date)
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{
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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, (LPWSTR)date, 9);
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return date;
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}
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/*********************************************************************
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* _strtime (MSVCRT.@)
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*/
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char* CDECL _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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}
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/*********************************************************************
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* _wstrtime (MSVCRT.@)
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*/
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MSVCRT_wchar_t* CDECL _wstrtime(MSVCRT_wchar_t* time)
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{
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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, (LPWSTR)time, 9);
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return time;
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}
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/*********************************************************************
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* clock (MSVCRT.@)
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*/
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MSVCRT_clock_t CDECL MSVCRT_clock(void)
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{
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FILETIME ftc, fte, ftk, ftu;
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ULONGLONG utime, ktime;
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MSVCRT_clock_t clock;
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GetProcessTimes(GetCurrentProcess(), &ftc, &fte, &ftk, &ftu);
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ktime = ((ULONGLONG)ftk.dwHighDateTime << 32) | ftk.dwLowDateTime;
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utime = ((ULONGLONG)ftu.dwHighDateTime << 32) | ftu.dwLowDateTime;
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clock = (utime + ktime) / (TICKSPERSEC / MSVCRT_CLOCKS_PER_SEC);
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return clock;
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}
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/*********************************************************************
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* difftime (MSVCRT.@)
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*/
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double CDECL MSVCRT_difftime(MSVCRT_time_t time1, MSVCRT_time_t time2)
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{
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return (double)(time1 - time2);
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}
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/*********************************************************************
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* _ftime (MSVCRT.@)
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*/
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void CDECL _ftime(struct MSVCRT__timeb *buf)
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{
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TIME_ZONE_INFORMATION tzinfo;
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FILETIME ft;
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ULONGLONG time;
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DWORD tzid = GetTimeZoneInformation(&tzinfo);
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GetSystemTimeAsFileTime(&ft);
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time = ((ULONGLONG)ft.dwHighDateTime << 32) | ft.dwLowDateTime;
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buf->time = time / TICKSPERSEC - SECS_1601_TO_1970;
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buf->millitm = (time % TICKSPERSEC) / TICKSPERMSEC;
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buf->timezone = tzinfo.Bias +
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( tzid == TIME_ZONE_ID_STANDARD ? tzinfo.StandardBias :
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( tzid == TIME_ZONE_ID_DAYLIGHT ? tzinfo.DaylightBias : 0 ));
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buf->dstflag = (tzid == TIME_ZONE_ID_DAYLIGHT?1:0);
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}
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/*********************************************************************
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* time (MSVCRT.@)
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*/
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MSVCRT_time_t CDECL MSVCRT_time(MSVCRT_time_t* buf)
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{
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MSVCRT_time_t curtime;
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struct MSVCRT__timeb tb;
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_ftime(&tb);
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curtime = tb.time;
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return buf ? *buf = curtime : curtime;
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}
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/*********************************************************************
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* _daylight (MSVCRT.@)
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*/
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int MSVCRT___daylight = 0;
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/*********************************************************************
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* __p_daylight (MSVCRT.@)
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*/
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int * CDECL MSVCRT___p__daylight(void)
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{
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return &MSVCRT___daylight;
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}
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/*********************************************************************
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* _dstbias (MSVCRT.@)
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*/
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int MSVCRT__dstbias = 0;
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/*********************************************************************
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* __p_dstbias (MSVCRT.@)
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*/
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int * CDECL __p__dstbias(void)
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{
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return &MSVCRT__dstbias;
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}
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/*********************************************************************
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* _timezone (MSVCRT.@)
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*/
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long MSVCRT___timezone = 0;
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/*********************************************************************
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* __p_timezone (MSVCRT.@)
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*/
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long * CDECL MSVCRT___p__timezone(void)
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{
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return &MSVCRT___timezone;
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}
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/*********************************************************************
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* _tzname (MSVCRT.@)
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* NOTES
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* Some apps (notably Mozilla) insist on writing to these, so the buffer
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* must be large enough. The size is picked based on observation of
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* Windows XP.
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*/
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static char tzname_std[64] = "";
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static char tzname_dst[64] = "";
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char *MSVCRT__tzname[2] = { tzname_std, tzname_dst };
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/*********************************************************************
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* __p_tzname (MSVCRT.@)
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*/
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char ** CDECL __p__tzname(void)
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{
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return MSVCRT__tzname;
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}
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/*********************************************************************
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* _tzset (MSVCRT.@)
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*/
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void CDECL MSVCRT__tzset(void)
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{
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tzset();
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#if defined(HAVE_TIMEZONE) && defined(HAVE_DAYLIGHT)
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MSVCRT___daylight = daylight;
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MSVCRT___timezone = timezone;
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#else
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{
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static const time_t seconds_in_year = (365 * 24 + 6) * 3600;
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time_t t;
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struct tm *tmp;
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long zone_january, zone_july;
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t = (time((time_t *)0) / seconds_in_year) * seconds_in_year;
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tmp = localtime(&t);
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zone_january = -tmp->tm_gmtoff;
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t += seconds_in_year / 2;
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tmp = localtime(&t);
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zone_july = -tmp->tm_gmtoff;
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MSVCRT___daylight = (zone_january != zone_july);
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MSVCRT___timezone = max(zone_january, zone_july);
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}
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#endif
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lstrcpynA(tzname_std, tzname[0], sizeof(tzname_std));
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tzname_std[sizeof(tzname_std) - 1] = '\0';
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lstrcpynA(tzname_dst, tzname[1], sizeof(tzname_dst));
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tzname_dst[sizeof(tzname_dst) - 1] = '\0';
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}
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/*********************************************************************
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* strftime (MSVCRT.@)
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*/
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MSVCRT_size_t CDECL MSVCRT_strftime( char *str, MSVCRT_size_t max, const char *format,
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const struct MSVCRT_tm *mstm )
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{
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struct tm tm;
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msvcrt_tm_to_unix( &tm, mstm );
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return strftime( str, max, format, &tm );
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}
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/*********************************************************************
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* wcsftime (MSVCRT.@)
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*/
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MSVCRT_size_t CDECL MSVCRT_wcsftime( MSVCRT_wchar_t *str, MSVCRT_size_t max,
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const MSVCRT_wchar_t *format, const struct MSVCRT_tm *mstm )
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{
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char *s, *fmt;
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MSVCRT_size_t len;
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TRACE("%p %d %s %p\n", str, max, debugstr_w(format), mstm );
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len = WideCharToMultiByte( CP_UNIXCP, 0, format, -1, NULL, 0, NULL, NULL );
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if (!(fmt = MSVCRT_malloc( len ))) return 0;
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WideCharToMultiByte( CP_UNIXCP, 0, format, -1, fmt, len, NULL, NULL );
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if ((s = MSVCRT_malloc( max*4 )))
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{
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struct tm tm;
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msvcrt_tm_to_unix( &tm, mstm );
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if (!strftime( s, max*4, fmt, &tm )) s[0] = 0;
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len = MultiByteToWideChar( CP_UNIXCP, 0, s, -1, str, max );
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if (len) len--;
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MSVCRT_free( s );
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}
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else len = 0;
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MSVCRT_free( fmt );
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return len;
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}
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/*********************************************************************
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* asctime (MSVCRT.@)
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*/
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char * CDECL MSVCRT_asctime(const struct MSVCRT_tm *mstm)
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{
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thread_data_t *data = msvcrt_get_thread_data();
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struct tm tm;
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msvcrt_tm_to_unix( &tm, mstm );
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if (!data->asctime_buffer)
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data->asctime_buffer = MSVCRT_malloc( 30 ); /* ought to be enough */
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/* FIXME: may want to map from Unix codepage to CP_ACP */
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#ifdef HAVE_ASCTIME_R
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asctime_r( &tm, data->asctime_buffer );
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#else
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strcpy( data->asctime_buffer, asctime(&tm) );
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#endif
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return data->asctime_buffer;
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}
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/*********************************************************************
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* _wasctime (MSVCRT.@)
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*/
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MSVCRT_wchar_t * CDECL MSVCRT__wasctime(const struct MSVCRT_tm *mstm)
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{
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thread_data_t *data = msvcrt_get_thread_data();
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struct tm tm;
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char buffer[30];
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msvcrt_tm_to_unix( &tm, mstm );
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if (!data->wasctime_buffer)
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data->wasctime_buffer = MSVCRT_malloc( 30*sizeof(MSVCRT_wchar_t) ); /* ought to be enough */
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#ifdef HAVE_ASCTIME_R
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asctime_r( &tm, buffer );
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#else
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strcpy( buffer, asctime(&tm) );
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#endif
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MultiByteToWideChar( CP_UNIXCP, 0, buffer, -1, data->wasctime_buffer, 30 );
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return data->wasctime_buffer;
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}
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/*********************************************************************
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* ctime (MSVCRT.@)
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*/
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char * CDECL MSVCRT_ctime(const MSVCRT_time_t *time)
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{
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struct MSVCRT_tm *t;
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t = MSVCRT_localtime( time );
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if (!t) return NULL;
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return MSVCRT_asctime( t );
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}
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/*********************************************************************
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* _wctime (MSVCRT.@)
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*/
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MSVCRT_wchar_t * CDECL MSVCRT__wctime(const MSVCRT_time_t *time)
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{
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return MSVCRT__wasctime( MSVCRT_localtime(time) );
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}
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