[wxWidgets.git] / src / common / time.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        time.cpp
// Purpose:     wxTime class, from NIHCL
// Author:      Julian Smart, after K. E. Gorlen
// Modified by:
// Created:     04/01/98
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart and Markus Holzem
// Licence:   	wxWindows license
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation "time.h"
#endif

/*
Provides an object that represents a Time, stored as the number of
seconds since January 1, 1901, GMT.
*/

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
#pragma hdrstop
#endif

#include "wx/setup.h"

#if USE_TIMEDATE

#include "wx/time.h"
#include "wx/date.h"
#include "wx/utils.h"

#if USE_IOSTREAMH
#include <iostream.h>
#else
#include <iostream>
#endif

#include <iomanip.h>
#include <string.h>

#if !USE_SHARED_LIBRARY
IMPLEMENT_DYNAMIC_CLASS(wxTime, wxObject)
#endif


extern bool wxGetLocalTime(long *timeZone, int *dstObserved);
extern long wxGetCurrentTime(void);

static long TIME_ZONE;          /* seconds west of GMT */
static int DST_OBSERVED;        /* flags U.S. daylight saving time observed */

static bool wxTimeInitialized = FALSE;

wxTime::tFormat		wxTime::Format		= wxTime::wx12h;
wxTime::tPrecision	wxTime::Precision	= wxTime::wxStdMinSec;

static const unsigned long seconds_in_day = 24*60*60L;
static const wxDate refDate(1,1,1901);
// static const wxDate maxDate(49709L);      /* ((2**32)-1)/seconds_in_day -1 */

wxTime wxTime::GetLocalTime(const wxDate& date, hourTy h, minuteTy m, secondTy s)
/*
		  Return a local wxTime for the specified Standard Time date, hour, minute,
		  and second.
*/
{
  if (!wxTimeInitialized)
  {
	 wxGetLocalTime(&TIME_ZONE, &DST_OBSERVED);
	 wxTimeInitialized = TRUE;
  }
/*
		  if (!date.IsBetween(refDate,maxDate))
					 setError(NIHCL_DATERANGE,DEFAULT,
								date.dayOfMonth(),date.nameOfMonth(),date.year());
*/
  // The following line causes an error in GCC 2.1
//   long daysBetween = date-refDate;
  // ... but this seems to get round it.
  wxDate tmp1(date);
  wxDate tmp2(refDate);
  long daysBetween = tmp1 - tmp2;

  return wxTime(seconds_in_day*daysBetween + 60*60L*h + 60*m + s);
}

wxTime::wxTime()
/*
		  Construct a wxTime for this instant.
*/
{
  if (!wxTimeInitialized)
  {
	 wxGetLocalTime(&TIME_ZONE, &DST_OBSERVED);
	 wxTimeInitialized = TRUE;
  }
  sec = wxGetCurrentTime();
  sec += 2177452800UL;     /* seconds from 1/1/01 to 1/1/70 */
}

wxTime::wxTime(hourTy h, minuteTy m, secondTy s, bool dst)
/*
		  Construct a wxTime for today at the specified (local) hour, minute, and
		  second.
*/
{
  if (!wxTimeInitialized)
  {
	 wxGetLocalTime(&TIME_ZONE, &DST_OBSERVED);
	 wxTimeInitialized = TRUE;
  }

  sec = wxTime(wxDate(),h,m,s,dst).sec;
}


wxTime::wxTime(const wxDate& date, hourTy h, minuteTy m, secondTy s, bool dst)
/*
        Construct a wxTime for the specified (local) Date, hour, minute, and
        second.
*/
{
  if (!wxTimeInitialized)
  {
    wxGetLocalTime(&TIME_ZONE, &DST_OBSERVED);
	 wxTimeInitialized = TRUE;
  }
  sec = GetLocalTime(date,h,m,s).sec-3600;
  if (IsDST())
  {
    sec += 3600;
    if (IsDST() || dst) sec -= 3600;
  }
  else
  {
    sec += 3600;
/*
                if (IsDST()) setError(NIHCL_BADTIME,DEFAULT,
								date.dayOfMonth(),date.nameOfMonth(),date.year(),
								h,m,s,(dst?"DST":""));
*/
  }
  sec += TIME_ZONE;                               // adjust to GMT
}

wxTime::operator wxDate() const
/*
		  Convert a wxTime to a local wxDate
*/
{
//      return wxDate((int)(GetLocalTime().sec/seconds_in_day));     4.2 cc bug
		  long daycount = (long)(GetLocalTime().sec/seconds_in_day);

        wxDate date(1,1,1901);
        date += daycount;
        return date;
}

bool wxTime::IsBetween(const wxTime& a, const wxTime& b) const
{
        return *this >= a && *this <= b;
}

hourTy wxTime::GetHour() const
/*
		  Return the hour of this wxTime in local time; i.e., adjust for
        time zone and Daylight Savings Time.
*/
{
		  return GetLocalTime().GetHourGMT();
}

hourTy wxTime::GetHourGMT() const
/*
        Return the hour of this Time in GMT.
*/
{
		  return (hourTy)((sec % 86400) / 3600);
}

wxTime wxTime::GetBeginDST(unsigned year)
/*
		  Return the local Standard Time at which Daylight Savings Time
        begins in the specified year.
*/
{
        // Previous Sunday
        wxTime DSTtime(GetLocalTime(wxDate(3,31,year).Previous(1)+7,2));
        if (year<=1986) {
                // Previous Sunday
					 DSTtime = GetLocalTime(wxDate(4,30,year).Previous(1),2);
					 if (year==1974) DSTtime = GetLocalTime(wxDate(1,6,1974),2);
                if (year==1975) DSTtime = GetLocalTime(wxDate(2,23,1975),2);
        }
        return DSTtime;
}

wxTime wxTime::GetEndDST(unsigned year)
/*
        Return the local Standard Time at which Daylight Savings Time
        ends in the specified year.
*/
{
		  wxTime STDtime(GetLocalTime(wxDate(10,31,year).Previous(1),2-1));
		  return STDtime;
}

bool wxTime::IsDST() const
/*
        Return TRUE if this local Standard Time should be adjusted
        for Daylight Savings Time.
*/
{
        long daycount = (long)(sec/seconds_in_day);

        // At this point, daycount is the number of days from 1/1/1901.
		  // Need to convert to julian date (which starts at 1/1/4713 B.C.)
		  wxDate date(1,1,1901);
        date += daycount;

        unsigned year = date.GetYear();
		  if (DST_OBSERVED)
        {
                if (*this >= GetBeginDST(year))
                        if (*this < GetEndDST(year)) return TRUE;
        }
        return FALSE;
}

wxTime wxTime::GetLocalTime() const
/*
        Adjusts this GM Time for local time zone and Daylight Savings Time.
*/
{
		  wxTime local_time(sec-TIME_ZONE);
        if (local_time.IsDST()) local_time.sec += 3600;
        return local_time;
}

minuteTy wxTime::GetMinute() const
/*
        Return the minute of this wxTime in local time; i.e., adjust
		  for time zone and Daylight Savings Time.
*/
{
        return GetLocalTime().GetMinuteGMT();
}

minuteTy wxTime::GetMinuteGMT() const
/*
        Return the minute of this wxTime in GMT.
*/
{
		  return (minuteTy)(((sec % 86400) % 3600) / 60);
}

secondTy wxTime::GetSecond() const
/*
        Return the second of this wxTime.
*/
{
		  return (secondTy)(((sec % 86400) % 3600) % 60);
}

wxTime wxTime::Max(const wxTime& t) const
{
        if (t < *this) return *this;
        return t;
}

wxTime wxTime::Min(const wxTime& t) const
{
        if (t > *this) return *this;
		  return t;
}

wxTime::operator char *(void)
{
  return FormatTime();
}

void wxTime::SetFormat(const wxTime::tFormat lFormat,
							  const wxTime::tPrecision lPrecision) {

	wxTime::Format		= lFormat;
	wxTime::Precision	= lPrecision;
}

char *wxTime::FormatTime() const {
	static char	timeBuf[30];
	unsigned		hh(GetHour());

	switch (Format) {
	case wx12h:
		hh	-= 12;
		break;
	case wx24h:
		break;
	}

	switch (Precision) {
	case wxStdMinSec:
		sprintf(timeBuf,"%2d:%02d:%02d",hh,GetMinute(),GetSecond());
		break;
	case wxStdMin:
		sprintf(timeBuf,"%2d:%02d",hh,GetMinute());
		break;
	}

	if (Format == wx12h)
		if (GetHour() <= 12)
			strcat(timeBuf,"am");
		else
			strcat(timeBuf,"pm");

	return timeBuf;
}

/*
int wxTime::compare(const Object& ob) const
{
		  assertArgSpecies(ob,classDesc,"compare");
        register clockTy t = castdown(ob).sec;
        if (sec < t) return -1;
        if (sec > t) return 1;
        return 0;
}

void wxTime::deepenShallowCopy()  {}

unsigned wxTime::hash() const     { return sec; }

bool wxTime::isEqual(const Object& ob) const
{
        return ob.isSpecies(classDesc) && *this==castdown(ob);
}

const Class* wxTime::species() const { return &classDesc; }

void wxTime::printOn(ostream& strm) const
{
        register unsigned hh = GetHour();
        wxDate(*this).printOn(strm);
        strm << ' ' << ((hh <= 12) ? hh : hh-12) << ':'
             << setfill('0') << setw(2) << GetMinute() << ':'
				 << setfill('0') << setw(2) << GetSecond() << ' ';
        if (hh < 12) strm << "am";
        else strm << "pm";
}

wxTime::wxTime(OIOin& strm)
		  : BASE(strm)
{
		  unsigned long usec;
		  strm >> sec >> usec;
}

void wxTime::storer(OIOout& strm) const
{
        BASE::storer(strm);
        strm << sec << 0l;
}


wxTime::wxTime(OIOifd& fd)
		  : BASE(fd)
{
		  unsigned long usec;
		  fd >> sec >> usec;
}

void wxTime::storer(OIOofd& fd) const
{
		  BASE::storer(fd);
		  fd << sec << 0l;
}
*/

#endif
Commit	Line	Data
c801d85f KB	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: time.cpp
	3	// Purpose: wxTime class, from NIHCL
	4	// Author: Julian Smart, after K. E. Gorlen
	5	// Modified by:
	6	// Created: 04/01/98
	7	// RCS-ID: $Id$
	8	// Copyright: (c) Julian Smart and Markus Holzem
	9	// Licence: wxWindows license
	10	/////////////////////////////////////////////////////////////////////////////
	11
	12	#ifdef __GNUG__
	13	#pragma implementation "time.h"
	14	#endif
	15
	16	/*
	17	Provides an object that represents a Time, stored as the number of
	18	seconds since January 1, 1901, GMT.
	19	*/
	20
	21	// For compilers that support precompilation, includes "wx.h".
	22	#include "wx/wxprec.h"
	23
	24	#ifdef __BORLANDC__
	25	#pragma hdrstop
	26	#endif
	27
	28	#include "wx/setup.h"
	29
	30	#if USE_TIMEDATE
	31
	32	#include "wx/time.h"
	33	#include "wx/date.h"
	34	#include "wx/utils.h"
	35
	36	#if USE_IOSTREAMH
	37	#include <iostream.h>
	38	#else
	39	#include <iostream>
	40	#endif
	41
	42	#include <iomanip.h>
	43	#include <string.h>
	44
	45	#if !USE_SHARED_LIBRARY
	46	IMPLEMENT_DYNAMIC_CLASS(wxTime, wxObject)
	47	#endif
	48
	49
	50	extern bool wxGetLocalTime(long timeZone, int dstObserved);
	51	extern long wxGetCurrentTime(void);
	52
	53	static long TIME_ZONE; /* seconds west of GMT */
	54	static int DST_OBSERVED; /* flags U.S. daylight saving time observed */
	55
	56	static bool wxTimeInitialized = FALSE;
	57
	58	wxTime::tFormat wxTime::Format = wxTime::wx12h;
	59	wxTime::tPrecision wxTime::Precision = wxTime::wxStdMinSec;
	60
	61	static const unsigned long seconds_in_day = 246060L;
	62	static const wxDate refDate(1,1,1901);
	63	// static const wxDate maxDate(49709L); /* ((2*32)-1)/seconds_in_day -1 /
	64
65	wxTime wxTime::GetLocalTime(const wxDate& date, hourTy h, minuteTy m, secondTy s)
66	/*
67	Return a local wxTime for the specified Standard Time date, hour, minute,
68	and second.
69	*/
70	{
71	if (!wxTimeInitialized)
72	{
73	wxGetLocalTime(&TIME_ZONE, &DST_OBSERVED);
74	wxTimeInitialized = TRUE;
75	}
76	/*
77	if (!date.IsBetween(refDate,maxDate))
78	setError(NIHCL_DATERANGE,DEFAULT,
79	date.dayOfMonth(),date.nameOfMonth(),date.year());
80	*/
81	// The following line causes an error in GCC 2.1
82	// long daysBetween = date-refDate;
83	// ... but this seems to get round it.
84	wxDate tmp1(date);
85	wxDate tmp2(refDate);
86	long daysBetween = tmp1 - tmp2;
87
88	return wxTime(seconds_in_daydaysBetween + 6060Lh + 60m + s);
89	}
90
91	wxTime::wxTime()
92	/*
93	Construct a wxTime for this instant.
94	*/
95	{
96	if (!wxTimeInitialized)
97	{
98	wxGetLocalTime(&TIME_ZONE, &DST_OBSERVED);
99	wxTimeInitialized = TRUE;
100	}
101	sec = wxGetCurrentTime();
1f0299c1	102	sec += 2177452800UL; /* seconds from 1/1/01 to 1/1/70 */
c801d85f KB	103	}
	104
	105	wxTime::wxTime(hourTy h, minuteTy m, secondTy s, bool dst)
	106	/*
	107	Construct a wxTime for today at the specified (local) hour, minute, and
	108	second.
	109	*/
	110	{
	111	if (!wxTimeInitialized)
	112	{
	113	wxGetLocalTime(&TIME_ZONE, &DST_OBSERVED);
	114	wxTimeInitialized = TRUE;
	115	}
	116
	117	sec = wxTime(wxDate(),h,m,s,dst).sec;
	118	}
	119
	120
	121	wxTime::wxTime(const wxDate& date, hourTy h, minuteTy m, secondTy s, bool dst)
	122	/*
	123	Construct a wxTime for the specified (local) Date, hour, minute, and
	124	second.
	125	*/
	126	{
	127	if (!wxTimeInitialized)
	128	{
	129	wxGetLocalTime(&TIME_ZONE, &DST_OBSERVED);
	130	wxTimeInitialized = TRUE;
	131	}
	132	sec = GetLocalTime(date,h,m,s).sec-3600;
	133	if (IsDST())
	134	{
	135	sec += 3600;
	136	if (IsDST() \|\| dst) sec -= 3600;
	137	}
	138	else
	139	{
	140	sec += 3600;
	141	/*
	142	if (IsDST()) setError(NIHCL_BADTIME,DEFAULT,
	143	date.dayOfMonth(),date.nameOfMonth(),date.year(),
	144	h,m,s,(dst?"DST":""));
	145	*/
	146	}
	147	sec += TIME_ZONE; // adjust to GMT
	148	}
	149
	150	wxTime::operator wxDate() const
	151	/*
	152	Convert a wxTime to a local wxDate
	153	*/
	154	{
	155	// return wxDate((int)(GetLocalTime().sec/seconds_in_day)); 4.2 cc bug
	156	long daycount = (long)(GetLocalTime().sec/seconds_in_day);
	157
	158	wxDate date(1,1,1901);
	159	date += daycount;
	160	return date;
	161	}
	162
	163	bool wxTime::IsBetween(const wxTime& a, const wxTime& b) const
	164	{
	165	return this >= a && this <= b;
	166	}
167
168	hourTy wxTime::GetHour() const
169	/*
170	Return the hour of this wxTime in local time; i.e., adjust for
171	time zone and Daylight Savings Time.
172	*/
173	{
174	return GetLocalTime().GetHourGMT();
175	}
176
177	hourTy wxTime::GetHourGMT() const
178	/*
179	Return the hour of this Time in GMT.
180	*/
181	{
182	return (hourTy)((sec % 86400) / 3600);
183	}
184
185	wxTime wxTime::GetBeginDST(unsigned year)
186	/*
187	Return the local Standard Time at which Daylight Savings Time
188	begins in the specified year.
189	*/
190	{
191	// Previous Sunday
192	wxTime DSTtime(GetLocalTime(wxDate(3,31,year).Previous(1)+7,2));
193	if (year<=1986) {
194	// Previous Sunday
195	DSTtime = GetLocalTime(wxDate(4,30,year).Previous(1),2);
196	if (year==1974) DSTtime = GetLocalTime(wxDate(1,6,1974),2);
197	if (year==1975) DSTtime = GetLocalTime(wxDate(2,23,1975),2);
198	}
199	return DSTtime;
200	}
201
202	wxTime wxTime::GetEndDST(unsigned year)
203	/*
204	Return the local Standard Time at which Daylight Savings Time
205	ends in the specified year.
206	*/
207	{
208	wxTime STDtime(GetLocalTime(wxDate(10,31,year).Previous(1),2-1));
209	return STDtime;
210	}
211
212	bool wxTime::IsDST() const
213	/*
214	Return TRUE if this local Standard Time should be adjusted
215	for Daylight Savings Time.
216	*/
217	{
218	long daycount = (long)(sec/seconds_in_day);
219
220	// At this point, daycount is the number of days from 1/1/1901.
221	// Need to convert to julian date (which starts at 1/1/4713 B.C.)
222	wxDate date(1,1,1901);
223	date += daycount;
224
225	unsigned year = date.GetYear();
226	if (DST_OBSERVED)
227	{
228	if (*this >= GetBeginDST(year))
229	if (*this < GetEndDST(year)) return TRUE;
230	}
231	return FALSE;
232	}
233
234	wxTime wxTime::GetLocalTime() const
235	/*
236	Adjusts this GM Time for local time zone and Daylight Savings Time.
237	*/
238	{
239	wxTime local_time(sec-TIME_ZONE);
240	if (local_time.IsDST()) local_time.sec += 3600;
241	return local_time;
242	}
243
244	minuteTy wxTime::GetMinute() const
245	/*
246	Return the minute of this wxTime in local time; i.e., adjust
247	for time zone and Daylight Savings Time.
248	*/
249	{
250	return GetLocalTime().GetMinuteGMT();
251	}
252
253	minuteTy wxTime::GetMinuteGMT() const
254	/*
255	Return the minute of this wxTime in GMT.
256	*/
257	{
258	return (minuteTy)(((sec % 86400) % 3600) / 60);
259	}
260
261	secondTy wxTime::GetSecond() const
262	/*
263	Return the second of this wxTime.
264	*/
265	{
266	return (secondTy)(((sec % 86400) % 3600) % 60);
267	}
268
269	wxTime wxTime::Max(const wxTime& t) const
270	{
271	if (t < this) return this;
272	return t;
273	}
274
275	wxTime wxTime::Min(const wxTime& t) const
276	{
277	if (t > this) return this;
278	return t;
279	}
280
281	wxTime::operator char *(void)
282	{
283	return FormatTime();
284	}
285
286	void wxTime::SetFormat(const wxTime::tFormat lFormat,
287	const wxTime::tPrecision lPrecision) {
288
289	wxTime::Format = lFormat;
290	wxTime::Precision = lPrecision;
291	}
292
293	char *wxTime::FormatTime() const {
294	static char timeBuf[30];
295	unsigned hh(GetHour());
296
297	switch (Format) {
298	case wx12h:
299	hh -= 12;
300	break;
301	case wx24h:
302	break;
303	}
304
305	switch (Precision) {
306	case wxStdMinSec:
307	sprintf(timeBuf,"%2d:%02d:%02d",hh,GetMinute(),GetSecond());
308	break;
309	case wxStdMin:
310	sprintf(timeBuf,"%2d:%02d",hh,GetMinute());
311	break;
312	}
313
314	if (Format == wx12h)
315	if (GetHour() <= 12)
316	strcat(timeBuf,"am");
317	else
318	strcat(timeBuf,"pm");
319
320	return timeBuf;
321	}
322
323	/*
324	int wxTime::compare(const Object& ob) const
325	{
326	assertArgSpecies(ob,classDesc,"compare");
327	register clockTy t = castdown(ob).sec;
328	if (sec < t) return -1;
329	if (sec > t) return 1;
330	return 0;
331	}
332
333	void wxTime::deepenShallowCopy() {}
334
335	unsigned wxTime::hash() const { return sec; }
336
337	bool wxTime::isEqual(const Object& ob) const
338	{
339	return ob.isSpecies(classDesc) && *this==castdown(ob);
340	}
341
342	const Class* wxTime::species() const { return &classDesc; }
343
344	void wxTime::printOn(ostream& strm) const
345	{
346	register unsigned hh = GetHour();
347	wxDate(*this).printOn(strm);
348	strm << ' ' << ((hh <= 12) ? hh : hh-12) << ':'
349	<< setfill('0') << setw(2) << GetMinute() << ':'
350	<< setfill('0') << setw(2) << GetSecond() << ' ';
351	if (hh < 12) strm << "am";
352	else strm << "pm";
353	}
354
355	wxTime::wxTime(OIOin& strm)
356	: BASE(strm)
357	{
358	unsigned long usec;
359	strm >> sec >> usec;
360	}
361
362	void wxTime::storer(OIOout& strm) const
363	{
364	BASE::storer(strm);
365	strm << sec << 0l;
366	}
367
368
369	wxTime::wxTime(OIOifd& fd)
370	: BASE(fd)
371	{
372	unsigned long usec;
373	fd >> sec >> usec;
374	}
375
376	void wxTime::storer(OIOofd& fd) const
377	{
378	BASE::storer(fd);
379	fd << sec << 0l;
380	}
381	*/
382
383	#endif