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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 wxUSE_TIMEDATE | |
31 | ||
32 | #include "wx/time.h" | |
33 | #include "wx/date.h" | |
34 | #include "wx/utils.h" | |
35 | #include "wx/intl.h" | |
36 | ||
37 | #include "wx/ioswrap.h" | |
38 | ||
39 | #if wxUSE_IOSTREAMH && wxUSE_STD_IOSTREAM | |
40 | #include <iomanip.h> | |
41 | #else | |
42 | #include <iomanip> | |
43 | #endif | |
44 | ||
45 | #include <string.h> | |
46 | ||
47 | #if !USE_SHARED_LIBRARY | |
48 | IMPLEMENT_DYNAMIC_CLASS(wxTime, wxObject) | |
49 | #endif | |
50 | ||
51 | ||
52 | extern bool wxGetLocalTime(long *timeZone, int *dstObserved); | |
53 | extern long wxGetCurrentTime(void); | |
54 | ||
55 | static long TIME_ZONE; /* seconds west of GMT */ | |
56 | static int DST_OBSERVED; /* flags U.S. daylight saving time observed */ | |
57 | ||
58 | static bool wxTimeInitialized = FALSE; | |
59 | ||
60 | wxTime::tFormat wxTime::Format = wxTime::wx12h; | |
61 | wxTime::tPrecision wxTime::Precision = wxTime::wxStdMinSec; | |
62 | ||
63 | static const unsigned long seconds_in_day = 24*60*60L; | |
64 | static const wxDate refDate(1,1,1901); | |
65 | // static const wxDate maxDate(49709L); /* ((2**32)-1)/seconds_in_day -1 */ | |
66 | ||
67 | wxTime wxTime::GetLocalTime(const wxDate& date, hourTy h, minuteTy m, secondTy s) | |
68 | /* | |
69 | Return a local wxTime for the specified Standard Time date, hour, minute, | |
70 | and second. | |
71 | */ | |
72 | { | |
73 | if (!wxTimeInitialized) | |
74 | { | |
75 | wxGetLocalTime(&TIME_ZONE, &DST_OBSERVED); | |
76 | wxTimeInitialized = TRUE; | |
77 | } | |
78 | /* | |
79 | if (!date.IsBetween(refDate,maxDate)) | |
80 | setError(NIHCL_DATERANGE,DEFAULT, | |
81 | date.dayOfMonth(),date.nameOfMonth(),date.year()); | |
82 | */ | |
83 | // The following line causes an error in GCC 2.1 | |
84 | // long daysBetween = date-refDate; | |
85 | // ... but this seems to get round it. | |
86 | wxDate tmp1(date); | |
87 | wxDate tmp2(refDate); | |
88 | long daysBetween = tmp1 - tmp2; | |
89 | ||
90 | return wxTime(seconds_in_day*daysBetween + 60*60L*h + 60*m + s); | |
91 | } | |
92 | ||
93 | wxTime::wxTime() | |
94 | /* | |
95 | Construct a wxTime for this instant. | |
96 | */ | |
97 | { | |
98 | if (!wxTimeInitialized) | |
99 | { | |
100 | wxGetLocalTime(&TIME_ZONE, &DST_OBSERVED); | |
101 | wxTimeInitialized = TRUE; | |
102 | } | |
103 | sec = wxGetCurrentTime(); | |
104 | #ifdef __SALFORDC__ | |
105 | sec += (unsigned long) 2177452800; /* seconds from 1/1/01 to 1/1/70 */ | |
106 | #else | |
107 | sec += 2177452800UL; /* seconds from 1/1/01 to 1/1/70 */ | |
108 | #endif | |
109 | } | |
110 | ||
111 | wxTime::wxTime(hourTy h, minuteTy m, secondTy s, bool dst) | |
112 | /* | |
113 | Construct a wxTime for today at the specified (local) hour, minute, and | |
114 | second. | |
115 | */ | |
116 | { | |
117 | if (!wxTimeInitialized) | |
118 | { | |
119 | wxGetLocalTime(&TIME_ZONE, &DST_OBSERVED); | |
120 | wxTimeInitialized = TRUE; | |
121 | } | |
122 | ||
123 | sec = wxTime(wxDate(),h,m,s,dst).sec; | |
124 | } | |
125 | ||
126 | ||
127 | wxTime::wxTime(const wxDate& date, hourTy h, minuteTy m, secondTy s, bool dst) | |
128 | /* | |
129 | Construct a wxTime for the specified (local) Date, hour, minute, and | |
130 | second. | |
131 | */ | |
132 | { | |
133 | if (!wxTimeInitialized) | |
134 | { | |
135 | wxGetLocalTime(&TIME_ZONE, &DST_OBSERVED); | |
136 | wxTimeInitialized = TRUE; | |
137 | } | |
138 | sec = GetLocalTime(date,h,m,s).sec-3600; | |
139 | if (IsDST()) | |
140 | { | |
141 | sec += 3600; | |
142 | if (IsDST() || dst) sec -= 3600; | |
143 | } | |
144 | else | |
145 | { | |
146 | sec += 3600; | |
147 | /* | |
148 | if (IsDST()) setError(NIHCL_BADTIME,DEFAULT, | |
149 | date.dayOfMonth(),date.nameOfMonth(),date.year(), | |
150 | h,m,s,(dst?_("DST"):"")); | |
151 | */ | |
152 | } | |
153 | sec += TIME_ZONE; // adjust to GMT | |
154 | } | |
155 | ||
156 | #ifndef __SALFORDC__ | |
157 | wxTime::operator wxDate() const | |
158 | /* | |
159 | Convert a wxTime to a local wxDate | |
160 | */ | |
161 | { | |
162 | // return wxDate((int)(GetLocalTime().sec/seconds_in_day)); 4.2 cc bug | |
163 | long daycount = (long)(GetLocalTime().sec/seconds_in_day); | |
164 | ||
165 | wxDate date(1,1,1901); | |
166 | date += daycount; | |
167 | return date; | |
168 | } | |
169 | #endif | |
170 | ||
171 | bool wxTime::IsBetween(const wxTime& a, const wxTime& b) const | |
172 | { | |
173 | return *this >= a && *this <= b; | |
174 | } | |
175 | ||
176 | hourTy wxTime::GetHour() const | |
177 | /* | |
178 | Return the hour of this wxTime in local time; i.e., adjust for | |
179 | time zone and Daylight Savings Time. | |
180 | */ | |
181 | { | |
182 | return GetLocalTime().GetHourGMT(); | |
183 | } | |
184 | ||
185 | hourTy wxTime::GetHourGMT() const | |
186 | /* | |
187 | Return the hour of this Time in GMT. | |
188 | */ | |
189 | { | |
190 | return (hourTy)((sec % 86400) / 3600); | |
191 | } | |
192 | ||
193 | wxTime wxTime::GetBeginDST(unsigned year) | |
194 | /* | |
195 | Return the local Standard Time at which Daylight Savings Time | |
196 | begins in the specified year. | |
197 | */ | |
198 | { | |
199 | // Previous Sunday | |
200 | wxTime DSTtime(GetLocalTime(wxDate(3,31,year).Previous(1)+7,2)); | |
201 | if (year<=1986) { | |
202 | // Previous Sunday | |
203 | DSTtime = GetLocalTime(wxDate(4,30,year).Previous(1),2); | |
204 | if (year==1974) DSTtime = GetLocalTime(wxDate(1,6,1974),2); | |
205 | if (year==1975) DSTtime = GetLocalTime(wxDate(2,23,1975),2); | |
206 | } | |
207 | return DSTtime; | |
208 | } | |
209 | ||
210 | wxTime wxTime::GetEndDST(unsigned year) | |
211 | /* | |
212 | Return the local Standard Time at which Daylight Savings Time | |
213 | ends in the specified year. | |
214 | */ | |
215 | { | |
216 | wxTime STDtime(GetLocalTime(wxDate(10,31,year).Previous(1),2-1)); | |
217 | return STDtime; | |
218 | } | |
219 | ||
220 | bool wxTime::IsDST() const | |
221 | /* | |
222 | Return TRUE if this local Standard Time should be adjusted | |
223 | for Daylight Savings Time. | |
224 | */ | |
225 | { | |
226 | long daycount = (long)(sec/seconds_in_day); | |
227 | ||
228 | // At this point, daycount is the number of days from 1/1/1901. | |
229 | // Need to convert to julian date (which starts at 1/1/4713 B.C.) | |
230 | wxDate date(1,1,1901); | |
231 | date += daycount; | |
232 | ||
233 | unsigned year = date.GetYear(); | |
234 | if (DST_OBSERVED) | |
235 | { | |
236 | if (*this >= GetBeginDST(year)) | |
237 | if (*this < GetEndDST(year)) return TRUE; | |
238 | } | |
239 | return FALSE; | |
240 | } | |
241 | ||
242 | wxTime wxTime::GetLocalTime() const | |
243 | /* | |
244 | Adjusts this GM Time for local time zone and Daylight Savings Time. | |
245 | */ | |
246 | { | |
247 | wxTime local_time(sec-TIME_ZONE); | |
248 | if (local_time.IsDST()) local_time.sec += 3600; | |
249 | return local_time; | |
250 | } | |
251 | ||
252 | minuteTy wxTime::GetMinute() const | |
253 | /* | |
254 | Return the minute of this wxTime in local time; i.e., adjust | |
255 | for time zone and Daylight Savings Time. | |
256 | */ | |
257 | { | |
258 | return GetLocalTime().GetMinuteGMT(); | |
259 | } | |
260 | ||
261 | minuteTy wxTime::GetMinuteGMT() const | |
262 | /* | |
263 | Return the minute of this wxTime in GMT. | |
264 | */ | |
265 | { | |
266 | return (minuteTy)(((sec % 86400) % 3600) / 60); | |
267 | } | |
268 | ||
269 | secondTy wxTime::GetSecond() const | |
270 | /* | |
271 | Return the second of this wxTime. | |
272 | */ | |
273 | { | |
274 | return (secondTy)(((sec % 86400) % 3600) % 60); | |
275 | } | |
276 | ||
277 | secondTy wxTime::GetSecondGMT() const | |
278 | /* | |
279 | Return the minute of this wxTime in GMT. | |
280 | */ | |
281 | { | |
282 | return (secondTy)(((sec % 86400) % 3600) % 60); | |
283 | } | |
284 | ||
285 | int wxTime::GetDay() const | |
286 | { | |
287 | wxDate da((wxDate) *this); | |
288 | return da.GetDay(); | |
289 | } | |
290 | ||
291 | int wxTime::GetDayOfWeek() const | |
292 | { | |
293 | wxDate da((wxDate) *this); | |
294 | return da.GetDayOfWeek(); | |
295 | } | |
296 | ||
297 | int wxTime::GetMonth() const | |
298 | { | |
299 | wxDate da((wxDate) *this); | |
300 | return da.GetMonth(); | |
301 | } | |
302 | ||
303 | int wxTime::GetYear() const | |
304 | { | |
305 | wxDate da((wxDate) *this); | |
306 | return da.GetYear(); | |
307 | } | |
308 | ||
309 | wxTime wxTime::Max(const wxTime& t) const | |
310 | { | |
311 | if (t < *this) return *this; | |
312 | return t; | |
313 | } | |
314 | ||
315 | wxTime wxTime::Min(const wxTime& t) const | |
316 | { | |
317 | if (t > *this) return *this; | |
318 | return t; | |
319 | } | |
320 | ||
321 | #ifndef __SALFORDC__ | |
322 | wxTime::operator wxChar *(void) | |
323 | { | |
324 | return FormatTime(); | |
325 | } | |
326 | #endif | |
327 | ||
328 | void wxTime::SetFormat(const wxTime::tFormat lFormat, | |
329 | const wxTime::tPrecision lPrecision) { | |
330 | ||
331 | wxTime::Format = lFormat; | |
332 | wxTime::Precision = lPrecision; | |
333 | } | |
334 | ||
335 | wxChar *wxTime::FormatTime() const { | |
336 | static wxChar timeBuf[30]; | |
337 | unsigned hh(GetHour()); | |
338 | ||
339 | switch (Format) { | |
340 | case wx12h: | |
341 | hh -= 12; | |
342 | break; | |
343 | case wx24h: | |
344 | break; | |
345 | } | |
346 | ||
347 | switch (Precision) { | |
348 | case wxStdMinSec: | |
349 | wxSprintf(timeBuf,_T("%2d:%02d:%02d"),hh,GetMinute(),GetSecond()); | |
350 | break; | |
351 | case wxStdMin: | |
352 | wxSprintf(timeBuf,_T("%2d:%02d"),hh,GetMinute()); | |
353 | break; | |
354 | } | |
355 | ||
356 | if (Format == wx12h) | |
357 | if (GetHour() <= 12) | |
358 | wxStrcat(timeBuf,_("am")); | |
359 | else | |
360 | wxStrcat(timeBuf,_("pm")); | |
361 | ||
362 | return timeBuf; | |
363 | } | |
364 | ||
365 | /* | |
366 | int wxTime::compare(const Object& ob) const | |
367 | { | |
368 | assertArgSpecies(ob,classDesc,"compare"); | |
369 | register clockTy t = castdown(ob).sec; | |
370 | if (sec < t) return -1; | |
371 | if (sec > t) return 1; | |
372 | return 0; | |
373 | } | |
374 | ||
375 | void wxTime::deepenShallowCopy() {} | |
376 | ||
377 | unsigned wxTime::hash() const { return sec; } | |
378 | ||
379 | bool wxTime::isEqual(const Object& ob) const | |
380 | { | |
381 | return ob.isSpecies(classDesc) && *this==castdown(ob); | |
382 | } | |
383 | ||
384 | const Class* wxTime::species() const { return &classDesc; } | |
385 | ||
386 | void wxTime::printOn(ostream& strm) const | |
387 | { | |
388 | register unsigned hh = GetHour(); | |
389 | wxDate(*this).printOn(strm); | |
390 | strm << ' ' << ((hh <= 12) ? hh : hh-12) << ':' | |
391 | << setfill('0') << setw(2) << GetMinute() << ':' | |
392 | << setfill('0') << setw(2) << GetSecond() << ' '; | |
393 | if (hh < 12) strm << _("am"); | |
394 | else strm << _("pm"); | |
395 | } | |
396 | ||
397 | wxTime::wxTime(OIOin& strm) | |
398 | : BASE(strm) | |
399 | { | |
400 | unsigned long usec; | |
401 | strm >> sec >> usec; | |
402 | } | |
403 | ||
404 | void wxTime::storer(OIOout& strm) const | |
405 | { | |
406 | BASE::storer(strm); | |
407 | strm << sec << 0l; | |
408 | } | |
409 | ||
410 | ||
411 | wxTime::wxTime(OIOifd& fd) | |
412 | : BASE(fd) | |
413 | { | |
414 | unsigned long usec; | |
415 | fd >> sec >> usec; | |
416 | } | |
417 | ||
418 | void wxTime::storer(OIOofd& fd) const | |
419 | { | |
420 | BASE::storer(fd); | |
421 | fd << sec << 0l; | |
422 | } | |
423 | */ | |
424 | ||
425 | #endif |