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