/////////////////////////////////////////////////////////////////////////////
// Name: src/msw/wince/time.cpp
// Purpose: Implements missing time functionality for WinCE
-// Author:
-// Modified by:
-// Created: 2003-07-10
-// RCS-ID: $Id$
-// Copyright:
+// Author: Marco Cavallini (MCK) - wx@koansoftware.com
+// Modified by:
+// Created: 31-08-2003
+// RCS-ID:
+// Copyright: (c) Marco Cavallini
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#endif
#include "wx/msw/wince/time.h"
+#include <winbase.h>
-long timezone = 0;
+#define is_leap(y) (y % 4 == 0 && (y % 100 != 0 || y % 400 == 0))
+#define SECONDS_IN_ONE_MINUTE 60
+#define DAYS_IN_ONE_YEAR 365
+#define SECONDS_IN_ONE_MIN 60
+#define SECONDS_IN_ONE_HOUR 3600
+#define SECONDS_IN_ONE_DAY 86400
+#define DEFAULT_TIMEZONE 28800
+#define DO_GMTIME 0
+#define DO_LOCALTIME 1
-// Hint: use GetSystemTime()
-struct tm * __cdecl localtime(const time_t *)
+long timezone ; // global variable
+
+
+////////////////////////////////////////////////////////////////////////
+// Common code for localtime and gmtime (static)
+////////////////////////////////////////////////////////////////////////
+static struct tm * __cdecl common_localtime(const time_t * t, BOOL bLocal)
{
- // TODO
- return NULL;
-
- // Possible implementation
-#if 0
- // Localtime for WinCE
- // By martin brown (mpatalberta@yahoo.com)
- // This is really stupid, converting FILETIME to timeval back and
- // forth. It assumes FILETIME and DWORDLONG are the same structure
- // internally.
-
- TIME_ZONE_INFORMATION pTz;
-
- const unsigned short int __mon_yday[2][13] =
- {
- /* Normal years. */
- { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
- /* Leap years. */
- { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
- };
-
-
- ULARGE_INTEGER _100ns;
- ::GetTimeZoneInformation(&pTz);
-
- // FIXME
- _100ns.QuadPart = (DWORDLONG) *t * 10000 * 1000 /* + ACE_Time_Value::FILETIME_to_timval_skew */;
- FILETIME file_time;
- file_time.dwLowDateTime = _100ns.LowPart;
- file_time.dwHighDateTime = _100ns.HighPart;
-
- FILETIME localtime;
- SYSTEMTIME systime;
- FileTimeToLocalFileTime (&file_time, &localtime);
- FileTimeToSystemTime (&localtime, &systime);
-
- res->tm_hour = systime.wHour;
-
- if(pTz.DaylightBias!=0)
- {
- res->tm_isdst = 1;
- }
- else
- {
- res->tm_isdst = 1;
- }
-
- int iLeap;
- iLeap = (res->tm_year % 4 == 0 && (res->tm_year% 100 != 0 || res->tm_year % 400 == 0));
- // based on leap select which group to use
-
- res->tm_mday = systime.wDay;
- res->tm_min = systime.wMinute;
- res->tm_mon = systime.wMonth;
- res->tm_sec = systime.wSecond;
- res->tm_wday = systime.wDayOfWeek;
- res->tm_yday = __mon_yday[iLeap][systime.wMonth] + systime.wDay;
- res->tm_year = systime.wYear;// this the correct year but bias the value to start at the 1900
- res->tm_year = res->tm_year - 1900;
-
- return res;
-#endif
+ wxString str ;
+ SYSTEMTIME SystemTime;
+ TIME_ZONE_INFORMATION pTz;
+ static struct tm st_res ; // data holder
+ static struct tm * res = &st_res ; // data pointer
+ int iLeap;
+ const unsigned short int __mon_yday[2][13] =
+ {
+ // Normal years
+ { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
+ // Leap years
+ { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
+ };
+
+ ::GetLocalTime(&SystemTime) ;
+ ::GetTimeZoneInformation(&pTz);
+
+ ///////////////////////////////////////////////
+ // Set timezone
+ timezone = pTz.Bias * SECONDS_IN_ONE_MINUTE ;
+ ///////////////////////////////////////////////
+
+ iLeap = is_leap(SystemTime.wYear) ;
+
+ res->tm_hour = SystemTime.wHour;
+ res->tm_min = SystemTime.wMinute;
+ res->tm_sec = SystemTime.wSecond;
+
+ res->tm_mday = SystemTime.wDay;
+ res->tm_mon = SystemTime.wMonth - 1;// this the correct month but localtime returns month aligned to zero
+ res->tm_year = SystemTime.wYear; // this the correct year
+ res->tm_year = res->tm_year - 1900; // but localtime returns the value starting at the 1900
+
+ res->tm_wday = SystemTime.wDayOfWeek;
+ res->tm_yday = __mon_yday[iLeap][res->tm_mon] + SystemTime.wDay - 1; // localtime returns year-day aligned to zero
+
+ // if localtime behavior and daylight saving
+ if (bLocal && pTz.DaylightBias != 0)
+ res->tm_isdst = 1;
+ else
+ res->tm_isdst = 0; // without daylight saving or gmtime
+
+ return res;
}
-time_t __cdecl time(time_t *)
+////////////////////////////////////////////////////////////////////////
+// Receive the number of seconds elapsed since midnight(00:00:00)
+// and convert a time value and corrects for the local time zone
+////////////////////////////////////////////////////////////////////////
+struct tm * __cdecl localtime(const time_t * t)
{
- // TODO
- return 0;
+ return common_localtime(t, DO_LOCALTIME) ;
}
-size_t __cdecl wcsftime(wchar_t *, size_t, const wchar_t *,
- const struct tm *)
+////////////////////////////////////////////////////////////////////////
+// Receives the number of seconds elapsed since midnight(00:00:00)
+// and converts a time value WITHOUT correcting for the local time zone
+////////////////////////////////////////////////////////////////////////
+struct tm * __cdecl gmtime(const time_t *t)
{
- // TODO
- return 0;
+ return common_localtime(t, DO_GMTIME) ;
}
-time_t __cdecl mktime(struct tm *)
+
+////////////////////////////////////////////////////////////////////////
+// Common code for conversion of struct tm into time_t (static)
+////////////////////////////////////////////////////////////////////////
+static time_t __cdecl common_tm_to_time(int day, int month, int year, int hour, int minute, int second)
{
- // TODO
- return 0;
+ time_t prog = 0 ;
+ static int mdays[12] = { 31,28,31,30,31,30,31,31,30,31,30,31 } ;
+
+ while (--month)
+ {
+ prog += mdays[month - 1] ;
+ if (month == 2 && is_leap(year))
+ prog++ ;
+ }
+
+ // Calculate seconds in elapsed days
+ prog = day - 1 ; // align first day of the year to zero
+ prog += (DAYS_IN_ONE_YEAR * (year - 1970) + (year - 1901) / 4 - 19) ;
+ prog *= SECONDS_IN_ONE_DAY ;
+
+ // Add Calculated elapsed seconds in the current day
+ prog += (hour * SECONDS_IN_ONE_HOUR + minute *
+ SECONDS_IN_ONE_MIN + second) ;
+
+ return prog ;
}
-struct tm * __cdecl gmtime(const time_t *)
+
+////////////////////////////////////////////////////////////////////////
+// Returns the number of seconds elapsed since
+// midnight(00:00:00) of 1 January 1970
+////////////////////////////////////////////////////////////////////////
+time_t __cdecl time(time_t *t)
{
- // TODO
- return NULL;
+ time_t prog = 0 ;
+
+ if (t != NULL)
+ {
+ SYSTEMTIME SystemTime;
+
+ ::GetLocalTime(&SystemTime) ;
+ prog = common_tm_to_time(SystemTime.wDay, SystemTime.wMonth, SystemTime.wYear,
+ SystemTime.wHour, SystemTime.wMinute, SystemTime.wSecond) ;
+ *t = prog ;
+ }
+
+ return prog ;
}
+////////////////////////////////////////////////////////////////////////
+// Converts the local time provided by struct tm
+// into a time_t calendar value
+////////////////////////////////////////////////////////////////////////
+time_t __cdecl mktime(struct tm *t)
+{
+ return (common_tm_to_time(t->tm_mday, t->tm_mon, t->tm_year, t->tm_hour, t->tm_min, t->tm_sec)) ;
+}
+
+
+size_t __cdecl wcsftime(wchar_t *, size_t, const wchar_t *, const struct tm *)
+{
+ // TODO : maybe copy something from wxString::Printf
+
+ return 0;
+}
projects / wxWidgets.git / commitdiff
