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1ef54dcf | 1 | /////////////////////////////////////////////////////////////////////////////// |
0979c962 VZ |
2 | // Name: wx/datetime.h |
3 | // Purpose: implementation of time/date related classes | |
4 | // Author: Vadim Zeitlin | |
5 | // Modified by: | |
6 | // Created: 11.05.99 | |
7 | // RCS-ID: $Id$ | |
1ef54dcf VZ |
8 | // Copyright: (c) 1999 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr> |
9 | // parts of code taken from sndcal library by Scott E. Lee: | |
10 | // | |
11 | // Copyright 1993-1995, Scott E. Lee, all rights reserved. | |
12 | // Permission granted to use, copy, modify, distribute and sell | |
13 | // so long as the above copyright and this permission statement | |
14 | // are retained in all copies. | |
15 | // | |
0979c962 | 16 | // Licence: wxWindows license |
1ef54dcf VZ |
17 | /////////////////////////////////////////////////////////////////////////////// |
18 | ||
19 | /* | |
20 | * Implementation notes: | |
21 | * | |
22 | * 1. the time is stored as a 64bit integer containing the signed number of | |
299fcbfe VZ |
23 | * milliseconds since Jan 1. 1970 (the Unix Epoch) - so it is always |
24 | * expressed in GMT. | |
1ef54dcf VZ |
25 | * |
26 | * 2. the range is thus something about 580 million years, but due to current | |
27 | * algorithms limitations, only dates from Nov 24, 4714BC are handled | |
28 | * | |
29 | * 3. standard ANSI C functions are used to do time calculations whenever | |
30 | * possible, i.e. when the date is in the range Jan 1, 1970 to 2038 | |
31 | * | |
32 | * 4. otherwise, the calculations are done by converting the date to/from JDN | |
33 | * first (the range limitation mentioned above comes from here: the | |
34 | * algorithm used by Scott E. Lee's code only works for positive JDNs, more | |
35 | * or less) | |
36 | * | |
299fcbfe VZ |
37 | * 5. the object constructed for the given DD-MM-YYYY HH:MM:SS corresponds to |
38 | * this moment in local time and may be converted to the object | |
39 | * corresponding to the same date/time in another time zone by using | |
40 | * ToTimezone() | |
41 | * | |
42 | * 6. the conversions to the current (or any other) timezone are done when the | |
43 | * internal time representation is converted to the broken-down one in | |
44 | * wxDateTime::Tm. | |
1ef54dcf | 45 | */ |
0979c962 VZ |
46 | |
47 | // ============================================================================ | |
48 | // declarations | |
49 | // ============================================================================ | |
50 | ||
51 | // ---------------------------------------------------------------------------- | |
52 | // headers | |
53 | // ---------------------------------------------------------------------------- | |
54 | ||
55 | #ifdef __GNUG__ | |
56 | #pragma implementation "datetime.h" | |
57 | #endif | |
58 | ||
59 | // For compilers that support precompilation, includes "wx.h". | |
60 | #include "wx/wxprec.h" | |
61 | ||
62 | #ifdef __BORLANDC__ | |
63 | #pragma hdrstop | |
64 | #endif | |
65 | ||
66 | #ifndef WX_PRECOMP | |
67 | #include "wx/string.h" | |
68 | #include "wx/intl.h" | |
69 | #include "wx/log.h" | |
70 | #endif // WX_PRECOMP | |
71 | ||
fcc3d7cb | 72 | #include "wx/thread.h" |
cd0b1709 | 73 | #include "wx/tokenzr.h" |
7281ab04 | 74 | #include "wx/module.h" |
fcc3d7cb | 75 | |
f0f951fa | 76 | #define wxDEFINE_TIME_CONSTANTS // before including datetime.h |
b76b015e | 77 | |
ff0ea71c GT |
78 | #include <ctype.h> |
79 | ||
0979c962 | 80 | #include "wx/datetime.h" |
f6bcfd97 | 81 | #include "wx/timer.h" // for wxGetLocalTimeMillis() |
0979c962 | 82 | |
f0f951fa VZ |
83 | // ---------------------------------------------------------------------------- |
84 | // conditional compilation | |
85 | // ---------------------------------------------------------------------------- | |
6de20863 | 86 | |
f0f951fa VZ |
87 | #if defined(HAVE_STRPTIME) && defined(__LINUX__) |
88 | // glibc 2.0.7 strptime() is broken - the following snippet causes it to | |
89 | // crash (instead of just failing): | |
90 | // | |
91 | // strncpy(buf, "Tue Dec 21 20:25:40 1999", 128); | |
92 | // strptime(buf, "%x", &tm); | |
93 | // | |
94 | // so don't use it | |
95 | #undef HAVE_STRPTIME | |
96 | #endif // broken strptime() | |
97 | ||
98 | #ifndef WX_TIMEZONE | |
ad0dc53b | 99 | #if defined(__BORLANDC__) || defined(__MINGW32__) || defined(__VISAGECPP__) |
f0f951fa | 100 | #define WX_TIMEZONE _timezone |
8208e181 | 101 | #elif defined(__MWERKS__) |
f6bcfd97 BP |
102 | long wxmw_timezone = 28800; |
103 | #define WX_TIMEZONE wxmw_timezone; | |
f0f951fa VZ |
104 | #else // unknown platform - try timezone |
105 | #define WX_TIMEZONE timezone | |
106 | #endif | |
107 | #endif // !WX_TIMEZONE | |
c25a510b | 108 | |
384223b3 VZ |
109 | // ---------------------------------------------------------------------------- |
110 | // macros | |
111 | // ---------------------------------------------------------------------------- | |
112 | ||
113 | // debugging helper: just a convenient replacement of wxCHECK() | |
114 | #define wxDATETIME_CHECK(expr, msg) \ | |
115 | if ( !(expr) ) \ | |
116 | { \ | |
117 | wxFAIL_MSG(msg); \ | |
118 | *this = wxInvalidDateTime; \ | |
119 | return *this; \ | |
120 | } | |
121 | ||
4f6aed9c VZ |
122 | // ---------------------------------------------------------------------------- |
123 | // private classes | |
124 | // ---------------------------------------------------------------------------- | |
125 | ||
126 | class wxDateTimeHolidaysModule : public wxModule | |
127 | { | |
128 | public: | |
129 | virtual bool OnInit() | |
130 | { | |
131 | wxDateTimeHolidayAuthority::AddAuthority(new wxDateTimeWorkDays); | |
132 | ||
133 | return TRUE; | |
134 | } | |
135 | ||
136 | virtual void OnExit() | |
137 | { | |
138 | wxDateTimeHolidayAuthority::ClearAllAuthorities(); | |
f6081a04 | 139 | wxDateTimeHolidayAuthority::ms_authorities.Clear(); |
4f6aed9c VZ |
140 | } |
141 | ||
142 | private: | |
143 | DECLARE_DYNAMIC_CLASS(wxDateTimeHolidaysModule) | |
144 | }; | |
145 | ||
146 | IMPLEMENT_DYNAMIC_CLASS(wxDateTimeHolidaysModule, wxModule) | |
147 | ||
b76b015e VZ |
148 | // ---------------------------------------------------------------------------- |
149 | // constants | |
150 | // ---------------------------------------------------------------------------- | |
151 | ||
e6ec579c | 152 | // some trivial ones |
fcc3d7cb VZ |
153 | static const int MONTHS_IN_YEAR = 12; |
154 | ||
df05cdc5 VZ |
155 | static const int SEC_PER_MIN = 60; |
156 | ||
157 | static const int MIN_PER_HOUR = 60; | |
158 | ||
159 | static const int HOURS_PER_DAY = 24; | |
fcc3d7cb | 160 | |
e6ec579c VZ |
161 | static const long SECONDS_PER_DAY = 86400l; |
162 | ||
df05cdc5 VZ |
163 | static const int DAYS_PER_WEEK = 7; |
164 | ||
e6ec579c VZ |
165 | static const long MILLISECONDS_PER_DAY = 86400000l; |
166 | ||
167 | // this is the integral part of JDN of the midnight of Jan 1, 1970 | |
168 | // (i.e. JDN(Jan 1, 1970) = 2440587.5) | |
cd0b1709 | 169 | static const long EPOCH_JDN = 2440587l; |
b76b015e | 170 | |
1ef54dcf VZ |
171 | // the date of JDN -0.5 (as we don't work with fractional parts, this is the |
172 | // reference date for us) is Nov 24, 4714BC | |
173 | static const int JDN_0_YEAR = -4713; | |
174 | static const int JDN_0_MONTH = wxDateTime::Nov; | |
175 | static const int JDN_0_DAY = 24; | |
176 | ||
177 | // the constants used for JDN calculations | |
cd0b1709 VZ |
178 | static const long JDN_OFFSET = 32046l; |
179 | static const long DAYS_PER_5_MONTHS = 153l; | |
180 | static const long DAYS_PER_4_YEARS = 1461l; | |
181 | static const long DAYS_PER_400_YEARS = 146097l; | |
1ef54dcf | 182 | |
f0f951fa VZ |
183 | // this array contains the cumulated number of days in all previous months for |
184 | // normal and leap years | |
185 | static const wxDateTime::wxDateTime_t gs_cumulatedDays[2][MONTHS_IN_YEAR] = | |
186 | { | |
187 | { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 }, | |
188 | { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335 } | |
189 | }; | |
190 | ||
fcc3d7cb | 191 | // ---------------------------------------------------------------------------- |
2ef31e80 VZ |
192 | // global data |
193 | // ---------------------------------------------------------------------------- | |
194 | ||
384223b3 VZ |
195 | // in the fine tradition of ANSI C we use our equivalent of (time_t)-1 to |
196 | // indicate an invalid wxDateTime object | |
c3302e7e | 197 | |
788722ac | 198 | static const wxDateTime gs_dtDefault; |
2ef31e80 | 199 | |
384223b3 | 200 | const wxDateTime& wxDefaultDateTime = gs_dtDefault; |
2ef31e80 VZ |
201 | |
202 | wxDateTime::Country wxDateTime::ms_country = wxDateTime::Country_Unknown; | |
203 | ||
204 | // ---------------------------------------------------------------------------- | |
205 | // private globals | |
fcc3d7cb VZ |
206 | // ---------------------------------------------------------------------------- |
207 | ||
208 | // a critical section is needed to protect GetTimeZone() static | |
209 | // variable in MT case | |
c25a510b | 210 | #if wxUSE_THREADS |
2ef31e80 | 211 | static wxCriticalSection gs_critsectTimezone; |
fcc3d7cb VZ |
212 | #endif // wxUSE_THREADS |
213 | ||
b76b015e VZ |
214 | // ---------------------------------------------------------------------------- |
215 | // private functions | |
216 | // ---------------------------------------------------------------------------- | |
217 | ||
4f6aed9c VZ |
218 | // debugger helper: shows what the date really is |
219 | #ifdef __WXDEBUG__ | |
220 | extern const wxChar *wxDumpDate(const wxDateTime* dt) | |
221 | { | |
0de868d9 | 222 | static wxChar buf[128]; |
4f6aed9c VZ |
223 | |
224 | wxStrcpy(buf, dt->Format(_T("%Y-%m-%d (%a) %H:%M:%S"))); | |
225 | ||
226 | return buf; | |
227 | } | |
228 | #endif // Debug | |
229 | ||
fcc3d7cb VZ |
230 | // get the number of days in the given month of the given year |
231 | static inline | |
232 | wxDateTime::wxDateTime_t GetNumOfDaysInMonth(int year, wxDateTime::Month month) | |
233 | { | |
e6ec579c VZ |
234 | // the number of days in month in Julian/Gregorian calendar: the first line |
235 | // is for normal years, the second one is for the leap ones | |
236 | static wxDateTime::wxDateTime_t daysInMonth[2][MONTHS_IN_YEAR] = | |
237 | { | |
238 | { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }, | |
239 | { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 } | |
240 | }; | |
241 | ||
242 | return daysInMonth[wxDateTime::IsLeapYear(year)][month]; | |
fcc3d7cb VZ |
243 | } |
244 | ||
245 | // ensure that the timezone variable is set by calling localtime | |
246 | static int GetTimeZone() | |
247 | { | |
248 | // set to TRUE when the timezone is set | |
249 | static bool s_timezoneSet = FALSE; | |
250 | ||
251 | wxCRIT_SECT_LOCKER(lock, gs_critsectTimezone); | |
252 | ||
253 | if ( !s_timezoneSet ) | |
254 | { | |
1ef54dcf | 255 | // just call localtime() instead of figuring out whether this system |
e6ec579c | 256 | // supports tzset(), _tzset() or something else |
a2ae3275 | 257 | time_t t = 0; |
fcc3d7cb | 258 | |
a2ae3275 | 259 | (void)localtime(&t); |
fcc3d7cb VZ |
260 | s_timezoneSet = TRUE; |
261 | } | |
262 | ||
6de20863 | 263 | return (int)WX_TIMEZONE; |
fcc3d7cb VZ |
264 | } |
265 | ||
e6ec579c | 266 | // return the integral part of the JDN for the midnight of the given date (to |
1ef54dcf VZ |
267 | // get the real JDN you need to add 0.5, this is, in fact, JDN of the |
268 | // noon of the previous day) | |
e6ec579c VZ |
269 | static long GetTruncatedJDN(wxDateTime::wxDateTime_t day, |
270 | wxDateTime::Month mon, | |
271 | int year) | |
272 | { | |
1ef54dcf VZ |
273 | // CREDIT: code below is by Scott E. Lee (but bugs are mine) |
274 | ||
275 | // check the date validity | |
276 | wxASSERT_MSG( | |
277 | (year > JDN_0_YEAR) || | |
278 | ((year == JDN_0_YEAR) && (mon > JDN_0_MONTH)) || | |
279 | ((year == JDN_0_YEAR) && (mon == JDN_0_MONTH) && (day >= JDN_0_DAY)), | |
280 | _T("date out of range - can't convert to JDN") | |
281 | ); | |
282 | ||
283 | // make the year positive to avoid problems with negative numbers division | |
284 | year += 4800; | |
285 | ||
286 | // months are counted from March here | |
287 | int month; | |
288 | if ( mon >= wxDateTime::Mar ) | |
e6ec579c | 289 | { |
1ef54dcf | 290 | month = mon - 2; |
e6ec579c | 291 | } |
1ef54dcf | 292 | else |
e6ec579c | 293 | { |
1ef54dcf VZ |
294 | month = mon + 10; |
295 | year--; | |
296 | } | |
e6ec579c | 297 | |
1ef54dcf VZ |
298 | // now we can simply add all the contributions together |
299 | return ((year / 100) * DAYS_PER_400_YEARS) / 4 | |
300 | + ((year % 100) * DAYS_PER_4_YEARS) / 4 | |
301 | + (month * DAYS_PER_5_MONTHS + 2) / 5 | |
302 | + day | |
303 | - JDN_OFFSET; | |
e6ec579c VZ |
304 | } |
305 | ||
2f02cb89 | 306 | // this function is a wrapper around strftime(3) |
b76b015e VZ |
307 | static wxString CallStrftime(const wxChar *format, const tm* tm) |
308 | { | |
68ee7c47 | 309 | wxChar buf[4096]; |
b76b015e VZ |
310 | if ( !wxStrftime(buf, WXSIZEOF(buf), format, tm) ) |
311 | { | |
68ee7c47 | 312 | // buffer is too small? |
b76b015e VZ |
313 | wxFAIL_MSG(_T("strftime() failed")); |
314 | } | |
315 | ||
316 | return wxString(buf); | |
317 | } | |
318 | ||
2f02cb89 VZ |
319 | // if year and/or month have invalid values, replace them with the current ones |
320 | static void ReplaceDefaultYearMonthWithCurrent(int *year, | |
321 | wxDateTime::Month *month) | |
322 | { | |
323 | struct tm *tmNow = NULL; | |
324 | ||
325 | if ( *year == wxDateTime::Inv_Year ) | |
326 | { | |
327 | tmNow = wxDateTime::GetTmNow(); | |
328 | ||
329 | *year = 1900 + tmNow->tm_year; | |
330 | } | |
331 | ||
332 | if ( *month == wxDateTime::Inv_Month ) | |
333 | { | |
334 | if ( !tmNow ) | |
335 | tmNow = wxDateTime::GetTmNow(); | |
336 | ||
337 | *month = (wxDateTime::Month)tmNow->tm_mon; | |
338 | } | |
339 | } | |
340 | ||
f0f951fa VZ |
341 | // fll the struct tm with default values |
342 | static void InitTm(struct tm& tm) | |
343 | { | |
344 | // struct tm may have etxra fields (undocumented and with unportable | |
345 | // names) which, nevertheless, must be set to 0 | |
346 | memset(&tm, 0, sizeof(struct tm)); | |
347 | ||
348 | tm.tm_mday = 1; // mday 0 is invalid | |
349 | tm.tm_year = 76; // any valid year | |
350 | tm.tm_isdst = -1; // auto determine | |
351 | } | |
352 | ||
cd0b1709 VZ |
353 | // parsing helpers |
354 | // --------------- | |
355 | ||
356 | // return the month if the string is a month name or Inv_Month otherwise | |
f0f951fa | 357 | static wxDateTime::Month GetMonthFromName(const wxString& name, int flags) |
cd0b1709 VZ |
358 | { |
359 | wxDateTime::Month mon; | |
360 | for ( mon = wxDateTime::Jan; mon < wxDateTime::Inv_Month; wxNextMonth(mon) ) | |
361 | { | |
f0f951fa VZ |
362 | // case-insensitive comparison either one of or with both abbreviated |
363 | // and not versions | |
364 | if ( flags & wxDateTime::Name_Full ) | |
cd0b1709 | 365 | { |
f0f951fa VZ |
366 | if ( name.CmpNoCase(wxDateTime:: |
367 | GetMonthName(mon, wxDateTime::Name_Full)) == 0 ) | |
368 | { | |
369 | break; | |
370 | } | |
371 | } | |
372 | ||
373 | if ( flags & wxDateTime::Name_Abbr ) | |
374 | { | |
375 | if ( name.CmpNoCase(wxDateTime:: | |
376 | GetMonthName(mon, wxDateTime::Name_Abbr)) == 0 ) | |
377 | { | |
378 | break; | |
379 | } | |
cd0b1709 VZ |
380 | } |
381 | } | |
382 | ||
383 | return mon; | |
384 | } | |
385 | ||
386 | // return the weekday if the string is a weekday name or Inv_WeekDay otherwise | |
f0f951fa | 387 | static wxDateTime::WeekDay GetWeekDayFromName(const wxString& name, int flags) |
cd0b1709 VZ |
388 | { |
389 | wxDateTime::WeekDay wd; | |
390 | for ( wd = wxDateTime::Sun; wd < wxDateTime::Inv_WeekDay; wxNextWDay(wd) ) | |
391 | { | |
f0f951fa VZ |
392 | // case-insensitive comparison either one of or with both abbreviated |
393 | // and not versions | |
394 | if ( flags & wxDateTime::Name_Full ) | |
cd0b1709 | 395 | { |
f0f951fa VZ |
396 | if ( name.CmpNoCase(wxDateTime:: |
397 | GetWeekDayName(wd, wxDateTime::Name_Full)) == 0 ) | |
398 | { | |
399 | break; | |
400 | } | |
401 | } | |
402 | ||
403 | if ( flags & wxDateTime::Name_Abbr ) | |
404 | { | |
405 | if ( name.CmpNoCase(wxDateTime:: | |
406 | GetWeekDayName(wd, wxDateTime::Name_Abbr)) == 0 ) | |
407 | { | |
408 | break; | |
409 | } | |
cd0b1709 VZ |
410 | } |
411 | } | |
412 | ||
413 | return wd; | |
414 | } | |
415 | ||
f6bcfd97 BP |
416 | // scans all digits (but no more than len) and returns the resulting number |
417 | static bool GetNumericToken(size_t len, const wxChar*& p, unsigned long *number) | |
f0f951fa | 418 | { |
f6bcfd97 | 419 | size_t n = 1; |
f0f951fa VZ |
420 | wxString s; |
421 | while ( wxIsdigit(*p) ) | |
422 | { | |
423 | s += *p++; | |
f6bcfd97 BP |
424 | |
425 | if ( len && ++n > len ) | |
426 | break; | |
f0f951fa VZ |
427 | } |
428 | ||
429 | return !!s && s.ToULong(number); | |
430 | } | |
431 | ||
432 | // scans all alphabetic characters and returns the resulting string | |
433 | static wxString GetAlphaToken(const wxChar*& p) | |
434 | { | |
435 | wxString s; | |
436 | while ( wxIsalpha(*p) ) | |
437 | { | |
438 | s += *p++; | |
439 | } | |
440 | ||
441 | return s; | |
442 | } | |
443 | ||
0979c962 VZ |
444 | // ============================================================================ |
445 | // implementation of wxDateTime | |
446 | // ============================================================================ | |
447 | ||
b76b015e VZ |
448 | // ---------------------------------------------------------------------------- |
449 | // struct Tm | |
450 | // ---------------------------------------------------------------------------- | |
451 | ||
452 | wxDateTime::Tm::Tm() | |
453 | { | |
454 | year = (wxDateTime_t)wxDateTime::Inv_Year; | |
455 | mon = wxDateTime::Inv_Month; | |
456 | mday = 0; | |
e6ec579c | 457 | hour = min = sec = msec = 0; |
b76b015e VZ |
458 | wday = wxDateTime::Inv_WeekDay; |
459 | } | |
460 | ||
299fcbfe VZ |
461 | wxDateTime::Tm::Tm(const struct tm& tm, const TimeZone& tz) |
462 | : m_tz(tz) | |
b76b015e | 463 | { |
e6ec579c | 464 | msec = 0; |
b76b015e VZ |
465 | sec = tm.tm_sec; |
466 | min = tm.tm_min; | |
467 | hour = tm.tm_hour; | |
468 | mday = tm.tm_mday; | |
fcc3d7cb | 469 | mon = (wxDateTime::Month)tm.tm_mon; |
b76b015e VZ |
470 | year = 1900 + tm.tm_year; |
471 | wday = tm.tm_wday; | |
472 | yday = tm.tm_yday; | |
473 | } | |
474 | ||
475 | bool wxDateTime::Tm::IsValid() const | |
476 | { | |
477 | // we allow for the leap seconds, although we don't use them (yet) | |
fcc3d7cb | 478 | return (year != wxDateTime::Inv_Year) && (mon != wxDateTime::Inv_Month) && |
c5a1681b | 479 | (mday <= GetNumOfDaysInMonth(year, mon)) && |
e6ec579c | 480 | (hour < 24) && (min < 60) && (sec < 62) && (msec < 1000); |
b76b015e VZ |
481 | } |
482 | ||
483 | void wxDateTime::Tm::ComputeWeekDay() | |
484 | { | |
c5a1681b VZ |
485 | // compute the week day from day/month/year: we use the dumbest algorithm |
486 | // possible: just compute our JDN and then use the (simple to derive) | |
487 | // formula: weekday = (JDN + 1.5) % 7 | |
488 | wday = (wxDateTime::WeekDay)(GetTruncatedJDN(mday, mon, year) + 2) % 7; | |
b76b015e VZ |
489 | } |
490 | ||
e6ec579c | 491 | void wxDateTime::Tm::AddMonths(int monDiff) |
fcc3d7cb VZ |
492 | { |
493 | // normalize the months field | |
494 | while ( monDiff < -mon ) | |
495 | { | |
496 | year--; | |
497 | ||
498 | monDiff += MONTHS_IN_YEAR; | |
499 | } | |
500 | ||
2ef31e80 | 501 | while ( monDiff + mon >= MONTHS_IN_YEAR ) |
fcc3d7cb VZ |
502 | { |
503 | year++; | |
239446b4 VZ |
504 | |
505 | monDiff -= MONTHS_IN_YEAR; | |
fcc3d7cb VZ |
506 | } |
507 | ||
508 | mon = (wxDateTime::Month)(mon + monDiff); | |
509 | ||
e6ec579c | 510 | wxASSERT_MSG( mon >= 0 && mon < MONTHS_IN_YEAR, _T("logic error") ); |
4f6aed9c VZ |
511 | |
512 | // NB: we don't check here that the resulting date is valid, this function | |
513 | // is private and the caller must check it if needed | |
fcc3d7cb VZ |
514 | } |
515 | ||
e6ec579c | 516 | void wxDateTime::Tm::AddDays(int dayDiff) |
fcc3d7cb VZ |
517 | { |
518 | // normalize the days field | |
9d9b7755 | 519 | while ( dayDiff + mday < 1 ) |
fcc3d7cb VZ |
520 | { |
521 | AddMonths(-1); | |
522 | ||
9d9b7755 | 523 | dayDiff += GetNumOfDaysInMonth(year, mon); |
fcc3d7cb VZ |
524 | } |
525 | ||
9d9b7755 | 526 | mday += dayDiff; |
fcc3d7cb VZ |
527 | while ( mday > GetNumOfDaysInMonth(year, mon) ) |
528 | { | |
529 | mday -= GetNumOfDaysInMonth(year, mon); | |
530 | ||
531 | AddMonths(1); | |
532 | } | |
533 | ||
534 | wxASSERT_MSG( mday > 0 && mday <= GetNumOfDaysInMonth(year, mon), | |
535 | _T("logic error") ); | |
536 | } | |
537 | ||
538 | // ---------------------------------------------------------------------------- | |
539 | // class TimeZone | |
540 | // ---------------------------------------------------------------------------- | |
541 | ||
542 | wxDateTime::TimeZone::TimeZone(wxDateTime::TZ tz) | |
543 | { | |
544 | switch ( tz ) | |
545 | { | |
546 | case wxDateTime::Local: | |
299fcbfe VZ |
547 | // get the offset from C RTL: it returns the difference GMT-local |
548 | // while we want to have the offset _from_ GMT, hence the '-' | |
549 | m_offset = -GetTimeZone(); | |
fcc3d7cb VZ |
550 | break; |
551 | ||
552 | case wxDateTime::GMT_12: | |
553 | case wxDateTime::GMT_11: | |
554 | case wxDateTime::GMT_10: | |
555 | case wxDateTime::GMT_9: | |
556 | case wxDateTime::GMT_8: | |
557 | case wxDateTime::GMT_7: | |
558 | case wxDateTime::GMT_6: | |
559 | case wxDateTime::GMT_5: | |
560 | case wxDateTime::GMT_4: | |
561 | case wxDateTime::GMT_3: | |
562 | case wxDateTime::GMT_2: | |
563 | case wxDateTime::GMT_1: | |
299fcbfe | 564 | m_offset = -3600*(wxDateTime::GMT0 - tz); |
fcc3d7cb VZ |
565 | break; |
566 | ||
567 | case wxDateTime::GMT0: | |
568 | case wxDateTime::GMT1: | |
569 | case wxDateTime::GMT2: | |
570 | case wxDateTime::GMT3: | |
571 | case wxDateTime::GMT4: | |
572 | case wxDateTime::GMT5: | |
573 | case wxDateTime::GMT6: | |
574 | case wxDateTime::GMT7: | |
575 | case wxDateTime::GMT8: | |
576 | case wxDateTime::GMT9: | |
577 | case wxDateTime::GMT10: | |
578 | case wxDateTime::GMT11: | |
579 | case wxDateTime::GMT12: | |
299fcbfe | 580 | m_offset = 3600*(tz - wxDateTime::GMT0); |
fcc3d7cb VZ |
581 | break; |
582 | ||
583 | case wxDateTime::A_CST: | |
584 | // Central Standard Time in use in Australia = UTC + 9.5 | |
cd0b1709 | 585 | m_offset = 60l*(9*60 + 30); |
fcc3d7cb VZ |
586 | break; |
587 | ||
588 | default: | |
589 | wxFAIL_MSG( _T("unknown time zone") ); | |
590 | } | |
591 | } | |
592 | ||
b76b015e VZ |
593 | // ---------------------------------------------------------------------------- |
594 | // static functions | |
595 | // ---------------------------------------------------------------------------- | |
596 | ||
597 | /* static */ | |
598 | bool wxDateTime::IsLeapYear(int year, wxDateTime::Calendar cal) | |
599 | { | |
2f02cb89 VZ |
600 | if ( year == Inv_Year ) |
601 | year = GetCurrentYear(); | |
602 | ||
b76b015e VZ |
603 | if ( cal == Gregorian ) |
604 | { | |
605 | // in Gregorian calendar leap years are those divisible by 4 except | |
606 | // those divisible by 100 unless they're also divisible by 400 | |
607 | // (in some countries, like Russia and Greece, additional corrections | |
608 | // exist, but they won't manifest themselves until 2700) | |
609 | return (year % 4 == 0) && ((year % 100 != 0) || (year % 400 == 0)); | |
610 | } | |
611 | else if ( cal == Julian ) | |
612 | { | |
613 | // in Julian calendar the rule is simpler | |
614 | return year % 4 == 0; | |
615 | } | |
616 | else | |
617 | { | |
618 | wxFAIL_MSG(_T("unknown calendar")); | |
619 | ||
620 | return FALSE; | |
621 | } | |
622 | } | |
623 | ||
fcc3d7cb VZ |
624 | /* static */ |
625 | int wxDateTime::GetCentury(int year) | |
626 | { | |
627 | return year > 0 ? year / 100 : year / 100 - 1; | |
628 | } | |
629 | ||
b76b015e VZ |
630 | /* static */ |
631 | int wxDateTime::ConvertYearToBC(int year) | |
632 | { | |
633 | // year 0 is BC 1 | |
634 | return year > 0 ? year : year - 1; | |
635 | } | |
636 | ||
637 | /* static */ | |
638 | int wxDateTime::GetCurrentYear(wxDateTime::Calendar cal) | |
639 | { | |
640 | switch ( cal ) | |
641 | { | |
642 | case Gregorian: | |
643 | return Now().GetYear(); | |
644 | ||
645 | case Julian: | |
646 | wxFAIL_MSG(_T("TODO")); | |
647 | break; | |
648 | ||
649 | default: | |
650 | wxFAIL_MSG(_T("unsupported calendar")); | |
651 | break; | |
652 | } | |
653 | ||
654 | return Inv_Year; | |
655 | } | |
656 | ||
657 | /* static */ | |
658 | wxDateTime::Month wxDateTime::GetCurrentMonth(wxDateTime::Calendar cal) | |
659 | { | |
660 | switch ( cal ) | |
661 | { | |
662 | case Gregorian: | |
663 | return Now().GetMonth(); | |
b76b015e VZ |
664 | |
665 | case Julian: | |
666 | wxFAIL_MSG(_T("TODO")); | |
667 | break; | |
668 | ||
669 | default: | |
670 | wxFAIL_MSG(_T("unsupported calendar")); | |
671 | break; | |
672 | } | |
673 | ||
674 | return Inv_Month; | |
675 | } | |
676 | ||
2f02cb89 VZ |
677 | /* static */ |
678 | wxDateTime::wxDateTime_t wxDateTime::GetNumberOfDays(int year, Calendar cal) | |
679 | { | |
680 | if ( year == Inv_Year ) | |
681 | { | |
682 | // take the current year if none given | |
683 | year = GetCurrentYear(); | |
684 | } | |
685 | ||
686 | switch ( cal ) | |
687 | { | |
688 | case Gregorian: | |
689 | case Julian: | |
690 | return IsLeapYear(year) ? 366 : 365; | |
2f02cb89 VZ |
691 | |
692 | default: | |
693 | wxFAIL_MSG(_T("unsupported calendar")); | |
694 | break; | |
695 | } | |
696 | ||
697 | return 0; | |
698 | } | |
699 | ||
b76b015e VZ |
700 | /* static */ |
701 | wxDateTime::wxDateTime_t wxDateTime::GetNumberOfDays(wxDateTime::Month month, | |
702 | int year, | |
703 | wxDateTime::Calendar cal) | |
704 | { | |
fcc3d7cb | 705 | wxCHECK_MSG( month < MONTHS_IN_YEAR, 0, _T("invalid month") ); |
b76b015e VZ |
706 | |
707 | if ( cal == Gregorian || cal == Julian ) | |
708 | { | |
709 | if ( year == Inv_Year ) | |
710 | { | |
711 | // take the current year if none given | |
712 | year = GetCurrentYear(); | |
713 | } | |
714 | ||
fcc3d7cb | 715 | return GetNumOfDaysInMonth(year, month); |
b76b015e VZ |
716 | } |
717 | else | |
718 | { | |
719 | wxFAIL_MSG(_T("unsupported calendar")); | |
720 | ||
721 | return 0; | |
722 | } | |
723 | } | |
724 | ||
725 | /* static */ | |
f0f951fa VZ |
726 | wxString wxDateTime::GetMonthName(wxDateTime::Month month, |
727 | wxDateTime::NameFlags flags) | |
b76b015e VZ |
728 | { |
729 | wxCHECK_MSG( month != Inv_Month, _T(""), _T("invalid month") ); | |
730 | ||
68ee7c47 VZ |
731 | // notice that we must set all the fields to avoid confusing libc (GNU one |
732 | // gets confused to a crash if we don't do this) | |
cd0b1709 | 733 | tm tm; |
f0f951fa | 734 | InitTm(tm); |
cd0b1709 | 735 | tm.tm_mon = month; |
b76b015e | 736 | |
f0f951fa | 737 | return CallStrftime(flags == Name_Abbr ? _T("%b") : _T("%B"), &tm); |
b76b015e VZ |
738 | } |
739 | ||
740 | /* static */ | |
f0f951fa VZ |
741 | wxString wxDateTime::GetWeekDayName(wxDateTime::WeekDay wday, |
742 | wxDateTime::NameFlags flags) | |
b76b015e VZ |
743 | { |
744 | wxCHECK_MSG( wday != Inv_WeekDay, _T(""), _T("invalid weekday") ); | |
745 | ||
746 | // take some arbitrary Sunday | |
f0f951fa VZ |
747 | tm tm; |
748 | InitTm(tm); | |
749 | tm.tm_mday = 28; | |
750 | tm.tm_mon = Nov; | |
751 | tm.tm_year = 99; | |
b76b015e | 752 | |
1ef54dcf | 753 | // and offset it by the number of days needed to get the correct wday |
b76b015e VZ |
754 | tm.tm_mday += wday; |
755 | ||
c5a1681b VZ |
756 | // call mktime() to normalize it... |
757 | (void)mktime(&tm); | |
758 | ||
759 | // ... and call strftime() | |
f0f951fa VZ |
760 | return CallStrftime(flags == Name_Abbr ? _T("%a") : _T("%A"), &tm); |
761 | } | |
762 | ||
763 | /* static */ | |
764 | void wxDateTime::GetAmPmStrings(wxString *am, wxString *pm) | |
765 | { | |
766 | tm tm; | |
767 | InitTm(tm); | |
768 | if ( am ) | |
769 | { | |
770 | *am = CallStrftime(_T("%p"), &tm); | |
771 | } | |
772 | if ( pm ) | |
773 | { | |
774 | tm.tm_hour = 13; | |
775 | *pm = CallStrftime(_T("%p"), &tm); | |
776 | } | |
b76b015e VZ |
777 | } |
778 | ||
239446b4 VZ |
779 | // ---------------------------------------------------------------------------- |
780 | // Country stuff: date calculations depend on the country (DST, work days, | |
781 | // ...), so we need to know which rules to follow. | |
782 | // ---------------------------------------------------------------------------- | |
783 | ||
784 | /* static */ | |
785 | wxDateTime::Country wxDateTime::GetCountry() | |
786 | { | |
f0f951fa VZ |
787 | // TODO use LOCALE_ICOUNTRY setting under Win32 |
788 | ||
239446b4 VZ |
789 | if ( ms_country == Country_Unknown ) |
790 | { | |
791 | // try to guess from the time zone name | |
792 | time_t t = time(NULL); | |
793 | struct tm *tm = localtime(&t); | |
794 | ||
795 | wxString tz = CallStrftime(_T("%Z"), tm); | |
796 | if ( tz == _T("WET") || tz == _T("WEST") ) | |
797 | { | |
798 | ms_country = UK; | |
799 | } | |
800 | else if ( tz == _T("CET") || tz == _T("CEST") ) | |
801 | { | |
802 | ms_country = Country_EEC; | |
803 | } | |
804 | else if ( tz == _T("MSK") || tz == _T("MSD") ) | |
805 | { | |
806 | ms_country = Russia; | |
807 | } | |
808 | else if ( tz == _T("AST") || tz == _T("ADT") || | |
809 | tz == _T("EST") || tz == _T("EDT") || | |
810 | tz == _T("CST") || tz == _T("CDT") || | |
811 | tz == _T("MST") || tz == _T("MDT") || | |
812 | tz == _T("PST") || tz == _T("PDT") ) | |
813 | { | |
814 | ms_country = USA; | |
815 | } | |
816 | else | |
817 | { | |
818 | // well, choose a default one | |
819 | ms_country = USA; | |
820 | } | |
821 | } | |
822 | ||
823 | return ms_country; | |
824 | } | |
825 | ||
826 | /* static */ | |
827 | void wxDateTime::SetCountry(wxDateTime::Country country) | |
828 | { | |
829 | ms_country = country; | |
830 | } | |
831 | ||
832 | /* static */ | |
833 | bool wxDateTime::IsWestEuropeanCountry(Country country) | |
834 | { | |
835 | if ( country == Country_Default ) | |
836 | { | |
837 | country = GetCountry(); | |
838 | } | |
839 | ||
840 | return (Country_WesternEurope_Start <= country) && | |
841 | (country <= Country_WesternEurope_End); | |
842 | } | |
843 | ||
844 | // ---------------------------------------------------------------------------- | |
845 | // DST calculations: we use 3 different rules for the West European countries, | |
846 | // USA and for the rest of the world. This is undoubtedly false for many | |
847 | // countries, but I lack the necessary info (and the time to gather it), | |
848 | // please add the other rules here! | |
849 | // ---------------------------------------------------------------------------- | |
850 | ||
851 | /* static */ | |
852 | bool wxDateTime::IsDSTApplicable(int year, Country country) | |
853 | { | |
854 | if ( year == Inv_Year ) | |
855 | { | |
856 | // take the current year if none given | |
857 | year = GetCurrentYear(); | |
858 | } | |
859 | ||
860 | if ( country == Country_Default ) | |
861 | { | |
862 | country = GetCountry(); | |
863 | } | |
864 | ||
865 | switch ( country ) | |
866 | { | |
867 | case USA: | |
868 | case UK: | |
869 | // DST was first observed in the US and UK during WWI, reused | |
870 | // during WWII and used again since 1966 | |
871 | return year >= 1966 || | |
872 | (year >= 1942 && year <= 1945) || | |
873 | (year == 1918 || year == 1919); | |
874 | ||
875 | default: | |
876 | // assume that it started after WWII | |
877 | return year > 1950; | |
878 | } | |
879 | } | |
880 | ||
881 | /* static */ | |
882 | wxDateTime wxDateTime::GetBeginDST(int year, Country country) | |
883 | { | |
884 | if ( year == Inv_Year ) | |
885 | { | |
886 | // take the current year if none given | |
887 | year = GetCurrentYear(); | |
888 | } | |
889 | ||
890 | if ( country == Country_Default ) | |
891 | { | |
892 | country = GetCountry(); | |
893 | } | |
894 | ||
895 | if ( !IsDSTApplicable(year, country) ) | |
896 | { | |
2ef31e80 | 897 | return wxInvalidDateTime; |
239446b4 VZ |
898 | } |
899 | ||
900 | wxDateTime dt; | |
901 | ||
902 | if ( IsWestEuropeanCountry(country) || (country == Russia) ) | |
903 | { | |
904 | // DST begins at 1 a.m. GMT on the last Sunday of March | |
905 | if ( !dt.SetToLastWeekDay(Sun, Mar, year) ) | |
906 | { | |
907 | // weird... | |
908 | wxFAIL_MSG( _T("no last Sunday in March?") ); | |
909 | } | |
910 | ||
911 | dt += wxTimeSpan::Hours(1); | |
912 | ||
41acf5c0 VZ |
913 | // disable DST tests because it could result in an infinite recursion! |
914 | dt.MakeGMT(TRUE); | |
239446b4 VZ |
915 | } |
916 | else switch ( country ) | |
917 | { | |
918 | case USA: | |
919 | switch ( year ) | |
920 | { | |
921 | case 1918: | |
922 | case 1919: | |
923 | // don't know for sure - assume it was in effect all year | |
924 | ||
925 | case 1943: | |
926 | case 1944: | |
927 | case 1945: | |
928 | dt.Set(1, Jan, year); | |
929 | break; | |
930 | ||
931 | case 1942: | |
932 | // DST was installed Feb 2, 1942 by the Congress | |
933 | dt.Set(2, Feb, year); | |
934 | break; | |
935 | ||
936 | // Oil embargo changed the DST period in the US | |
937 | case 1974: | |
938 | dt.Set(6, Jan, 1974); | |
939 | break; | |
940 | ||
941 | case 1975: | |
942 | dt.Set(23, Feb, 1975); | |
943 | break; | |
944 | ||
945 | default: | |
946 | // before 1986, DST begun on the last Sunday of April, but | |
947 | // in 1986 Reagan changed it to begin at 2 a.m. of the | |
948 | // first Sunday in April | |
949 | if ( year < 1986 ) | |
950 | { | |
951 | if ( !dt.SetToLastWeekDay(Sun, Apr, year) ) | |
952 | { | |
953 | // weird... | |
954 | wxFAIL_MSG( _T("no first Sunday in April?") ); | |
955 | } | |
956 | } | |
957 | else | |
958 | { | |
959 | if ( !dt.SetToWeekDay(Sun, 1, Apr, year) ) | |
960 | { | |
961 | // weird... | |
962 | wxFAIL_MSG( _T("no first Sunday in April?") ); | |
963 | } | |
964 | } | |
965 | ||
966 | dt += wxTimeSpan::Hours(2); | |
967 | ||
968 | // TODO what about timezone?? | |
969 | } | |
970 | ||
971 | break; | |
972 | ||
973 | default: | |
974 | // assume Mar 30 as the start of the DST for the rest of the world | |
975 | // - totally bogus, of course | |
976 | dt.Set(30, Mar, year); | |
977 | } | |
978 | ||
979 | return dt; | |
980 | } | |
981 | ||
982 | /* static */ | |
983 | wxDateTime wxDateTime::GetEndDST(int year, Country country) | |
984 | { | |
985 | if ( year == Inv_Year ) | |
986 | { | |
987 | // take the current year if none given | |
988 | year = GetCurrentYear(); | |
989 | } | |
990 | ||
991 | if ( country == Country_Default ) | |
992 | { | |
993 | country = GetCountry(); | |
994 | } | |
995 | ||
996 | if ( !IsDSTApplicable(year, country) ) | |
997 | { | |
2ef31e80 | 998 | return wxInvalidDateTime; |
239446b4 VZ |
999 | } |
1000 | ||
1001 | wxDateTime dt; | |
1002 | ||
1003 | if ( IsWestEuropeanCountry(country) || (country == Russia) ) | |
1004 | { | |
5f287370 | 1005 | // DST ends at 1 a.m. GMT on the last Sunday of October |
239446b4 VZ |
1006 | if ( !dt.SetToLastWeekDay(Sun, Oct, year) ) |
1007 | { | |
1008 | // weirder and weirder... | |
1009 | wxFAIL_MSG( _T("no last Sunday in October?") ); | |
1010 | } | |
1011 | ||
1012 | dt += wxTimeSpan::Hours(1); | |
1013 | ||
41acf5c0 VZ |
1014 | // disable DST tests because it could result in an infinite recursion! |
1015 | dt.MakeGMT(TRUE); | |
239446b4 VZ |
1016 | } |
1017 | else switch ( country ) | |
1018 | { | |
1019 | case USA: | |
1020 | switch ( year ) | |
1021 | { | |
1022 | case 1918: | |
1023 | case 1919: | |
1024 | // don't know for sure - assume it was in effect all year | |
1025 | ||
1026 | case 1943: | |
1027 | case 1944: | |
1028 | dt.Set(31, Dec, year); | |
1029 | break; | |
1030 | ||
1031 | case 1945: | |
1032 | // the time was reset after the end of the WWII | |
1033 | dt.Set(30, Sep, year); | |
1034 | break; | |
1035 | ||
1036 | default: | |
5f287370 | 1037 | // DST ends at 2 a.m. on the last Sunday of October |
239446b4 VZ |
1038 | if ( !dt.SetToLastWeekDay(Sun, Oct, year) ) |
1039 | { | |
1040 | // weirder and weirder... | |
1041 | wxFAIL_MSG( _T("no last Sunday in October?") ); | |
1042 | } | |
1043 | ||
1044 | dt += wxTimeSpan::Hours(2); | |
1045 | ||
1046 | // TODO what about timezone?? | |
1047 | } | |
1048 | break; | |
1049 | ||
1050 | default: | |
1051 | // assume October 26th as the end of the DST - totally bogus too | |
1052 | dt.Set(26, Oct, year); | |
1053 | } | |
1054 | ||
1055 | return dt; | |
1056 | } | |
1057 | ||
0979c962 VZ |
1058 | // ---------------------------------------------------------------------------- |
1059 | // constructors and assignment operators | |
1060 | // ---------------------------------------------------------------------------- | |
1061 | ||
f6bcfd97 BP |
1062 | // return the current time with ms precision |
1063 | /* static */ wxDateTime wxDateTime::UNow() | |
1064 | { | |
1065 | return wxDateTime(wxGetLocalTimeMillis()); | |
1066 | } | |
1067 | ||
299fcbfe VZ |
1068 | // the values in the tm structure contain the local time |
1069 | wxDateTime& wxDateTime::Set(const struct tm& tm) | |
0979c962 | 1070 | { |
299fcbfe | 1071 | struct tm tm2(tm); |
b76b015e | 1072 | time_t timet = mktime(&tm2); |
1ef54dcf | 1073 | |
4afd7529 | 1074 | if ( timet == (time_t)-1 ) |
0979c962 | 1075 | { |
4afd7529 VZ |
1076 | // mktime() rather unintuitively fails for Jan 1, 1970 if the hour is |
1077 | // less than timezone - try to make it work for this case | |
1078 | if ( tm2.tm_year == 70 && tm2.tm_mon == 0 && tm2.tm_mday == 1 ) | |
1079 | { | |
1080 | // add timezone to make sure that date is in range | |
1081 | tm2.tm_sec -= GetTimeZone(); | |
1082 | ||
1083 | timet = mktime(&tm2); | |
1084 | if ( timet != (time_t)-1 ) | |
1085 | { | |
1086 | timet += GetTimeZone(); | |
1087 | ||
1088 | return Set(timet); | |
1089 | } | |
1090 | } | |
1091 | ||
1092 | wxFAIL_MSG( _T("mktime() failed") ); | |
0979c962 | 1093 | |
384223b3 VZ |
1094 | *this = wxInvalidDateTime; |
1095 | ||
1096 | return *this; | |
0979c962 VZ |
1097 | } |
1098 | else | |
1099 | { | |
1100 | return Set(timet); | |
1101 | } | |
1102 | } | |
1103 | ||
1104 | wxDateTime& wxDateTime::Set(wxDateTime_t hour, | |
1105 | wxDateTime_t minute, | |
1106 | wxDateTime_t second, | |
1107 | wxDateTime_t millisec) | |
1108 | { | |
1109 | // we allow seconds to be 61 to account for the leap seconds, even if we | |
1110 | // don't use them really | |
384223b3 VZ |
1111 | wxDATETIME_CHECK( hour < 24 && |
1112 | second < 62 && | |
1113 | minute < 60 && | |
1114 | millisec < 1000, | |
1115 | _T("Invalid time in wxDateTime::Set()") ); | |
0979c962 VZ |
1116 | |
1117 | // get the current date from system | |
9d9b7755 | 1118 | struct tm *tm = GetTmNow(); |
299fcbfe | 1119 | |
384223b3 | 1120 | wxDATETIME_CHECK( tm, _T("localtime() failed") ); |
0979c962 VZ |
1121 | |
1122 | // adjust the time | |
1123 | tm->tm_hour = hour; | |
1124 | tm->tm_min = minute; | |
1125 | tm->tm_sec = second; | |
1126 | ||
b76b015e | 1127 | (void)Set(*tm); |
0979c962 VZ |
1128 | |
1129 | // and finally adjust milliseconds | |
1130 | return SetMillisecond(millisec); | |
1131 | } | |
1132 | ||
1133 | wxDateTime& wxDateTime::Set(wxDateTime_t day, | |
1134 | Month month, | |
1135 | int year, | |
1136 | wxDateTime_t hour, | |
1137 | wxDateTime_t minute, | |
1138 | wxDateTime_t second, | |
1139 | wxDateTime_t millisec) | |
1140 | { | |
384223b3 VZ |
1141 | wxDATETIME_CHECK( hour < 24 && |
1142 | second < 62 && | |
1143 | minute < 60 && | |
1144 | millisec < 1000, | |
1145 | _T("Invalid time in wxDateTime::Set()") ); | |
0979c962 | 1146 | |
2f02cb89 | 1147 | ReplaceDefaultYearMonthWithCurrent(&year, &month); |
0979c962 | 1148 | |
384223b3 VZ |
1149 | wxDATETIME_CHECK( (0 < day) && (day <= GetNumberOfDays(month, year)), |
1150 | _T("Invalid date in wxDateTime::Set()") ); | |
0979c962 VZ |
1151 | |
1152 | // the range of time_t type (inclusive) | |
1153 | static const int yearMinInRange = 1970; | |
1154 | static const int yearMaxInRange = 2037; | |
1155 | ||
1156 | // test only the year instead of testing for the exact end of the Unix | |
1157 | // time_t range - it doesn't bring anything to do more precise checks | |
2f02cb89 | 1158 | if ( year >= yearMinInRange && year <= yearMaxInRange ) |
0979c962 VZ |
1159 | { |
1160 | // use the standard library version if the date is in range - this is | |
b76b015e | 1161 | // probably more efficient than our code |
0979c962 | 1162 | struct tm tm; |
b76b015e | 1163 | tm.tm_year = year - 1900; |
0979c962 VZ |
1164 | tm.tm_mon = month; |
1165 | tm.tm_mday = day; | |
1166 | tm.tm_hour = hour; | |
1167 | tm.tm_min = minute; | |
1168 | tm.tm_sec = second; | |
299fcbfe | 1169 | tm.tm_isdst = -1; // mktime() will guess it |
0979c962 VZ |
1170 | |
1171 | (void)Set(tm); | |
1172 | ||
1173 | // and finally adjust milliseconds | |
1174 | return SetMillisecond(millisec); | |
1175 | } | |
1176 | else | |
1177 | { | |
1178 | // do time calculations ourselves: we want to calculate the number of | |
fcc3d7cb | 1179 | // milliseconds between the given date and the epoch |
e6ec579c VZ |
1180 | |
1181 | // get the JDN for the midnight of this day | |
1182 | m_time = GetTruncatedJDN(day, month, year); | |
1183 | m_time -= EPOCH_JDN; | |
1184 | m_time *= SECONDS_PER_DAY * TIME_T_FACTOR; | |
1185 | ||
299fcbfe VZ |
1186 | // JDN corresponds to GMT, we take localtime |
1187 | Add(wxTimeSpan(hour, minute, second + GetTimeZone(), millisec)); | |
b76b015e VZ |
1188 | } |
1189 | ||
1190 | return *this; | |
1191 | } | |
1192 | ||
e6ec579c VZ |
1193 | wxDateTime& wxDateTime::Set(double jdn) |
1194 | { | |
1ef54dcf VZ |
1195 | // so that m_time will be 0 for the midnight of Jan 1, 1970 which is jdn |
1196 | // EPOCH_JDN + 0.5 | |
1197 | jdn -= EPOCH_JDN + 0.5; | |
1198 | ||
cd0b1709 VZ |
1199 | jdn *= MILLISECONDS_PER_DAY; |
1200 | ||
9c2882d9 | 1201 | m_time.Assign(jdn); |
e6ec579c VZ |
1202 | |
1203 | return *this; | |
1204 | } | |
1205 | ||
9d9b7755 VZ |
1206 | wxDateTime& wxDateTime::ResetTime() |
1207 | { | |
1208 | Tm tm = GetTm(); | |
1209 | ||
1210 | if ( tm.hour || tm.min || tm.sec || tm.msec ) | |
1211 | { | |
1212 | tm.msec = | |
1213 | tm.sec = | |
1214 | tm.min = | |
1215 | tm.hour = 0; | |
1216 | ||
1217 | Set(tm); | |
1218 | } | |
1219 | ||
1220 | return *this; | |
1221 | } | |
1222 | ||
b76b015e VZ |
1223 | // ---------------------------------------------------------------------------- |
1224 | // time_t <-> broken down time conversions | |
1225 | // ---------------------------------------------------------------------------- | |
1226 | ||
299fcbfe | 1227 | wxDateTime::Tm wxDateTime::GetTm(const TimeZone& tz) const |
b76b015e VZ |
1228 | { |
1229 | wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); | |
1230 | ||
1231 | time_t time = GetTicks(); | |
1232 | if ( time != (time_t)-1 ) | |
1233 | { | |
1234 | // use C RTL functions | |
299fcbfe VZ |
1235 | tm *tm; |
1236 | if ( tz.GetOffset() == -GetTimeZone() ) | |
1237 | { | |
1238 | // we are working with local time | |
1239 | tm = localtime(&time); | |
c5a1681b VZ |
1240 | |
1241 | // should never happen | |
f6bcfd97 | 1242 | wxCHECK_MSG( tm, Tm(), _T("localtime() failed") ); |
299fcbfe VZ |
1243 | } |
1244 | else | |
1245 | { | |
13111b2a | 1246 | time += (time_t)tz.GetOffset(); |
33ac7e6f | 1247 | #if defined(__VMS__) || defined(__WATCOMC__) // time is unsigned so avoid warning |
13111b2a | 1248 | int time2 = (int) time; |
9d9b7755 | 1249 | if ( time2 >= 0 ) |
fb10f04c | 1250 | #else |
9d9b7755 | 1251 | if ( time >= 0 ) |
fb10f04c | 1252 | #endif |
c5a1681b VZ |
1253 | { |
1254 | tm = gmtime(&time); | |
b76b015e | 1255 | |
c5a1681b VZ |
1256 | // should never happen |
1257 | wxCHECK_MSG( tm, Tm(), _T("gmtime() failed") ); | |
1258 | } | |
1259 | else | |
1260 | { | |
1261 | tm = (struct tm *)NULL; | |
1262 | } | |
1263 | } | |
b76b015e | 1264 | |
c5a1681b VZ |
1265 | if ( tm ) |
1266 | { | |
f6bcfd97 BP |
1267 | // adjust the milliseconds |
1268 | Tm tm2(*tm, tz); | |
1269 | long timeOnly = (m_time % MILLISECONDS_PER_DAY).ToLong(); | |
1270 | tm2.msec = (wxDateTime_t)(timeOnly % 1000); | |
1271 | return tm2; | |
c5a1681b VZ |
1272 | } |
1273 | //else: use generic code below | |
b76b015e | 1274 | } |
e6ec579c | 1275 | |
c5a1681b VZ |
1276 | // remember the time and do the calculations with the date only - this |
1277 | // eliminates rounding errors of the floating point arithmetics | |
299fcbfe | 1278 | |
c5a1681b | 1279 | wxLongLong timeMidnight = m_time + tz.GetOffset() * 1000; |
1ef54dcf | 1280 | |
c5a1681b | 1281 | long timeOnly = (timeMidnight % MILLISECONDS_PER_DAY).ToLong(); |
1ef54dcf | 1282 | |
c5a1681b VZ |
1283 | // we want to always have positive time and timeMidnight to be really |
1284 | // the midnight before it | |
1285 | if ( timeOnly < 0 ) | |
1286 | { | |
1287 | timeOnly = MILLISECONDS_PER_DAY + timeOnly; | |
1288 | } | |
e6ec579c | 1289 | |
c5a1681b | 1290 | timeMidnight -= timeOnly; |
1ef54dcf | 1291 | |
c5a1681b VZ |
1292 | // calculate the Gregorian date from JDN for the midnight of our date: |
1293 | // this will yield day, month (in 1..12 range) and year | |
1ef54dcf | 1294 | |
c5a1681b VZ |
1295 | // actually, this is the JDN for the noon of the previous day |
1296 | long jdn = (timeMidnight / MILLISECONDS_PER_DAY).ToLong() + EPOCH_JDN; | |
1ef54dcf | 1297 | |
c5a1681b | 1298 | // CREDIT: code below is by Scott E. Lee (but bugs are mine) |
1ef54dcf | 1299 | |
c5a1681b | 1300 | wxASSERT_MSG( jdn > -2, _T("JDN out of range") ); |
1ef54dcf | 1301 | |
c5a1681b | 1302 | // calculate the century |
479cd5de VZ |
1303 | long temp = (jdn + JDN_OFFSET) * 4 - 1; |
1304 | long century = temp / DAYS_PER_400_YEARS; | |
1ef54dcf | 1305 | |
c5a1681b VZ |
1306 | // then the year and day of year (1 <= dayOfYear <= 366) |
1307 | temp = ((temp % DAYS_PER_400_YEARS) / 4) * 4 + 3; | |
479cd5de VZ |
1308 | long year = (century * 100) + (temp / DAYS_PER_4_YEARS); |
1309 | long dayOfYear = (temp % DAYS_PER_4_YEARS) / 4 + 1; | |
1ef54dcf | 1310 | |
c5a1681b VZ |
1311 | // and finally the month and day of the month |
1312 | temp = dayOfYear * 5 - 3; | |
479cd5de VZ |
1313 | long month = temp / DAYS_PER_5_MONTHS; |
1314 | long day = (temp % DAYS_PER_5_MONTHS) / 5 + 1; | |
c5a1681b VZ |
1315 | |
1316 | // month is counted from March - convert to normal | |
1317 | if ( month < 10 ) | |
1318 | { | |
1319 | month += 3; | |
1320 | } | |
1321 | else | |
1322 | { | |
1323 | year += 1; | |
1324 | month -= 9; | |
1325 | } | |
1ef54dcf | 1326 | |
c5a1681b VZ |
1327 | // year is offset by 4800 |
1328 | year -= 4800; | |
1ef54dcf | 1329 | |
c5a1681b VZ |
1330 | // check that the algorithm gave us something reasonable |
1331 | wxASSERT_MSG( (0 < month) && (month <= 12), _T("invalid month") ); | |
1332 | wxASSERT_MSG( (1 <= day) && (day < 32), _T("invalid day") ); | |
e6ec579c | 1333 | |
c5a1681b VZ |
1334 | // construct Tm from these values |
1335 | Tm tm; | |
1336 | tm.year = (int)year; | |
1337 | tm.mon = (Month)(month - 1); // algorithm yields 1 for January, not 0 | |
1338 | tm.mday = (wxDateTime_t)day; | |
479cd5de | 1339 | tm.msec = (wxDateTime_t)(timeOnly % 1000); |
c5a1681b VZ |
1340 | timeOnly -= tm.msec; |
1341 | timeOnly /= 1000; // now we have time in seconds | |
e6ec579c | 1342 | |
479cd5de | 1343 | tm.sec = (wxDateTime_t)(timeOnly % 60); |
c5a1681b VZ |
1344 | timeOnly -= tm.sec; |
1345 | timeOnly /= 60; // now we have time in minutes | |
e6ec579c | 1346 | |
479cd5de | 1347 | tm.min = (wxDateTime_t)(timeOnly % 60); |
c5a1681b | 1348 | timeOnly -= tm.min; |
e6ec579c | 1349 | |
479cd5de | 1350 | tm.hour = (wxDateTime_t)(timeOnly / 60); |
b76b015e | 1351 | |
c5a1681b | 1352 | return tm; |
b76b015e VZ |
1353 | } |
1354 | ||
1355 | wxDateTime& wxDateTime::SetYear(int year) | |
1356 | { | |
1357 | wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); | |
1358 | ||
1359 | Tm tm(GetTm()); | |
1360 | tm.year = year; | |
1361 | Set(tm); | |
1362 | ||
1363 | return *this; | |
1364 | } | |
1365 | ||
1366 | wxDateTime& wxDateTime::SetMonth(Month month) | |
1367 | { | |
1368 | wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); | |
1369 | ||
1370 | Tm tm(GetTm()); | |
1371 | tm.mon = month; | |
1372 | Set(tm); | |
1373 | ||
1374 | return *this; | |
1375 | } | |
1376 | ||
1377 | wxDateTime& wxDateTime::SetDay(wxDateTime_t mday) | |
1378 | { | |
1379 | wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); | |
1380 | ||
1381 | Tm tm(GetTm()); | |
1382 | tm.mday = mday; | |
1383 | Set(tm); | |
1384 | ||
1385 | return *this; | |
1386 | } | |
1387 | ||
1388 | wxDateTime& wxDateTime::SetHour(wxDateTime_t hour) | |
1389 | { | |
1390 | wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); | |
1391 | ||
1392 | Tm tm(GetTm()); | |
1393 | tm.hour = hour; | |
1394 | Set(tm); | |
1395 | ||
1396 | return *this; | |
1397 | } | |
1398 | ||
1399 | wxDateTime& wxDateTime::SetMinute(wxDateTime_t min) | |
1400 | { | |
1401 | wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); | |
1402 | ||
1403 | Tm tm(GetTm()); | |
1404 | tm.min = min; | |
1405 | Set(tm); | |
1406 | ||
1407 | return *this; | |
1408 | } | |
1409 | ||
1410 | wxDateTime& wxDateTime::SetSecond(wxDateTime_t sec) | |
1411 | { | |
1412 | wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); | |
1413 | ||
1414 | Tm tm(GetTm()); | |
1415 | tm.sec = sec; | |
1416 | Set(tm); | |
0979c962 VZ |
1417 | |
1418 | return *this; | |
1419 | } | |
b76b015e VZ |
1420 | |
1421 | wxDateTime& wxDateTime::SetMillisecond(wxDateTime_t millisecond) | |
1422 | { | |
1423 | wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); | |
1424 | ||
1425 | // we don't need to use GetTm() for this one | |
1426 | m_time -= m_time % 1000l; | |
1427 | m_time += millisecond; | |
1428 | ||
1429 | return *this; | |
1430 | } | |
1431 | ||
1432 | // ---------------------------------------------------------------------------- | |
1433 | // wxDateTime arithmetics | |
1434 | // ---------------------------------------------------------------------------- | |
1435 | ||
1436 | wxDateTime& wxDateTime::Add(const wxDateSpan& diff) | |
1437 | { | |
1438 | Tm tm(GetTm()); | |
1439 | ||
1440 | tm.year += diff.GetYears(); | |
fcc3d7cb | 1441 | tm.AddMonths(diff.GetMonths()); |
4f6aed9c VZ |
1442 | |
1443 | // check that the resulting date is valid | |
1444 | if ( tm.mday > GetNumOfDaysInMonth(tm.year, tm.mon) ) | |
1445 | { | |
1446 | // We suppose that when adding one month to Jan 31 we want to get Feb | |
1447 | // 28 (or 29), i.e. adding a month to the last day of the month should | |
1448 | // give the last day of the next month which is quite logical. | |
1449 | // | |
1450 | // Unfortunately, there is no logic way to understand what should | |
1451 | // Jan 30 + 1 month be - Feb 28 too or Feb 27 (assuming non leap year)? | |
1452 | // We make it Feb 28 (last day too), but it is highly questionable. | |
1453 | tm.mday = GetNumOfDaysInMonth(tm.year, tm.mon); | |
1454 | } | |
1455 | ||
fcc3d7cb | 1456 | tm.AddDays(diff.GetTotalDays()); |
b76b015e VZ |
1457 | |
1458 | Set(tm); | |
1459 | ||
9d9b7755 VZ |
1460 | wxASSERT_MSG( IsSameTime(tm), |
1461 | _T("Add(wxDateSpan) shouldn't modify time") ); | |
1462 | ||
b76b015e VZ |
1463 | return *this; |
1464 | } | |
1465 | ||
2f02cb89 VZ |
1466 | // ---------------------------------------------------------------------------- |
1467 | // Weekday and monthday stuff | |
1468 | // ---------------------------------------------------------------------------- | |
1469 | ||
4f6aed9c VZ |
1470 | bool wxDateTime::SetToTheWeek(wxDateTime_t numWeek, WeekDay weekday) |
1471 | { | |
1472 | int year = GetYear(); | |
1473 | ||
1474 | // Jan 4 always lies in the 1st week of the year | |
1475 | Set(4, Jan, year); | |
1476 | SetToWeekDayInSameWeek(weekday) += wxDateSpan::Weeks(numWeek); | |
1477 | ||
1478 | if ( GetYear() != year ) | |
1479 | { | |
1480 | // oops... numWeek was too big | |
1481 | return FALSE; | |
1482 | } | |
1483 | ||
1484 | return TRUE; | |
1485 | } | |
1486 | ||
2f02cb89 VZ |
1487 | wxDateTime& wxDateTime::SetToLastMonthDay(Month month, |
1488 | int year) | |
1489 | { | |
1490 | // take the current month/year if none specified | |
1a8557b1 VZ |
1491 | if ( year == Inv_Year ) |
1492 | year = GetYear(); | |
1493 | if ( month == Inv_Month ) | |
1494 | month = GetMonth(); | |
2f02cb89 | 1495 | |
fcc3d7cb | 1496 | return Set(GetNumOfDaysInMonth(year, month), month, year); |
2f02cb89 VZ |
1497 | } |
1498 | ||
cd0b1709 VZ |
1499 | wxDateTime& wxDateTime::SetToWeekDayInSameWeek(WeekDay weekday) |
1500 | { | |
384223b3 | 1501 | wxDATETIME_CHECK( weekday != Inv_WeekDay, _T("invalid weekday") ); |
cd0b1709 VZ |
1502 | |
1503 | WeekDay wdayThis = GetWeekDay(); | |
1504 | if ( weekday == wdayThis ) | |
1505 | { | |
1506 | // nothing to do | |
1507 | return *this; | |
1508 | } | |
1509 | else if ( weekday < wdayThis ) | |
1510 | { | |
f6bcfd97 | 1511 | return Subtract(wxDateSpan::Days(wdayThis - weekday)); |
cd0b1709 VZ |
1512 | } |
1513 | else // weekday > wdayThis | |
1514 | { | |
4f6aed9c | 1515 | return Add(wxDateSpan::Days(weekday - wdayThis)); |
cd0b1709 VZ |
1516 | } |
1517 | } | |
1518 | ||
1519 | wxDateTime& wxDateTime::SetToNextWeekDay(WeekDay weekday) | |
1520 | { | |
384223b3 | 1521 | wxDATETIME_CHECK( weekday != Inv_WeekDay, _T("invalid weekday") ); |
cd0b1709 VZ |
1522 | |
1523 | int diff; | |
1524 | WeekDay wdayThis = GetWeekDay(); | |
1525 | if ( weekday == wdayThis ) | |
1526 | { | |
1527 | // nothing to do | |
1528 | return *this; | |
1529 | } | |
1530 | else if ( weekday < wdayThis ) | |
1531 | { | |
1532 | // need to advance a week | |
1533 | diff = 7 - (wdayThis - weekday); | |
1534 | } | |
1535 | else // weekday > wdayThis | |
1536 | { | |
1537 | diff = weekday - wdayThis; | |
1538 | } | |
1539 | ||
4f6aed9c | 1540 | return Add(wxDateSpan::Days(diff)); |
cd0b1709 VZ |
1541 | } |
1542 | ||
1543 | wxDateTime& wxDateTime::SetToPrevWeekDay(WeekDay weekday) | |
1544 | { | |
384223b3 | 1545 | wxDATETIME_CHECK( weekday != Inv_WeekDay, _T("invalid weekday") ); |
cd0b1709 VZ |
1546 | |
1547 | int diff; | |
1548 | WeekDay wdayThis = GetWeekDay(); | |
1549 | if ( weekday == wdayThis ) | |
1550 | { | |
1551 | // nothing to do | |
1552 | return *this; | |
1553 | } | |
1554 | else if ( weekday > wdayThis ) | |
1555 | { | |
1556 | // need to go to previous week | |
1557 | diff = 7 - (weekday - wdayThis); | |
1558 | } | |
1559 | else // weekday < wdayThis | |
1560 | { | |
1561 | diff = wdayThis - weekday; | |
1562 | } | |
1563 | ||
f6bcfd97 | 1564 | return Subtract(wxDateSpan::Days(diff)); |
cd0b1709 VZ |
1565 | } |
1566 | ||
2f02cb89 VZ |
1567 | bool wxDateTime::SetToWeekDay(WeekDay weekday, |
1568 | int n, | |
1569 | Month month, | |
1570 | int year) | |
1571 | { | |
1572 | wxCHECK_MSG( weekday != Inv_WeekDay, FALSE, _T("invalid weekday") ); | |
1573 | ||
1574 | // we don't check explicitly that -5 <= n <= 5 because we will return FALSE | |
1575 | // anyhow in such case - but may be should still give an assert for it? | |
1576 | ||
1577 | // take the current month/year if none specified | |
1578 | ReplaceDefaultYearMonthWithCurrent(&year, &month); | |
1579 | ||
1580 | wxDateTime dt; | |
1581 | ||
1582 | // TODO this probably could be optimised somehow... | |
1583 | ||
1584 | if ( n > 0 ) | |
1585 | { | |
1586 | // get the first day of the month | |
1587 | dt.Set(1, month, year); | |
1588 | ||
1589 | // get its wday | |
1590 | WeekDay wdayFirst = dt.GetWeekDay(); | |
1591 | ||
1592 | // go to the first weekday of the month | |
1593 | int diff = weekday - wdayFirst; | |
1594 | if ( diff < 0 ) | |
1595 | diff += 7; | |
1596 | ||
1597 | // add advance n-1 weeks more | |
1598 | diff += 7*(n - 1); | |
1599 | ||
239446b4 | 1600 | dt += wxDateSpan::Days(diff); |
2f02cb89 | 1601 | } |
239446b4 | 1602 | else // count from the end of the month |
2f02cb89 VZ |
1603 | { |
1604 | // get the last day of the month | |
1605 | dt.SetToLastMonthDay(month, year); | |
1606 | ||
1607 | // get its wday | |
1608 | WeekDay wdayLast = dt.GetWeekDay(); | |
1609 | ||
1610 | // go to the last weekday of the month | |
1611 | int diff = wdayLast - weekday; | |
1612 | if ( diff < 0 ) | |
1613 | diff += 7; | |
1614 | ||
1615 | // and rewind n-1 weeks from there | |
239446b4 | 1616 | diff += 7*(-n - 1); |
2f02cb89 VZ |
1617 | |
1618 | dt -= wxDateSpan::Days(diff); | |
1619 | } | |
1620 | ||
1621 | // check that it is still in the same month | |
1622 | if ( dt.GetMonth() == month ) | |
1623 | { | |
1624 | *this = dt; | |
1625 | ||
1626 | return TRUE; | |
1627 | } | |
1628 | else | |
1629 | { | |
1630 | // no such day in this month | |
1631 | return FALSE; | |
1632 | } | |
1633 | } | |
1634 | ||
239446b4 VZ |
1635 | wxDateTime::wxDateTime_t wxDateTime::GetDayOfYear(const TimeZone& tz) const |
1636 | { | |
239446b4 VZ |
1637 | Tm tm(GetTm(tz)); |
1638 | ||
f0f951fa | 1639 | return gs_cumulatedDays[IsLeapYear(tm.year)][tm.mon] + tm.mday; |
239446b4 VZ |
1640 | } |
1641 | ||
9d9b7755 VZ |
1642 | wxDateTime::wxDateTime_t wxDateTime::GetWeekOfYear(wxDateTime::WeekFlags flags, |
1643 | const TimeZone& tz) const | |
239446b4 | 1644 | { |
9d9b7755 VZ |
1645 | if ( flags == Default_First ) |
1646 | { | |
1647 | flags = GetCountry() == USA ? Sunday_First : Monday_First; | |
1648 | } | |
239446b4 VZ |
1649 | |
1650 | wxDateTime_t nDayInYear = GetDayOfYear(tz); | |
9d9b7755 | 1651 | wxDateTime_t week; |
239446b4 | 1652 | |
9d9b7755 VZ |
1653 | WeekDay wd = GetWeekDay(tz); |
1654 | if ( flags == Sunday_First ) | |
1655 | { | |
1656 | week = (nDayInYear - wd + 7) / 7; | |
1657 | } | |
1658 | else | |
1659 | { | |
1660 | // have to shift the week days values | |
1661 | week = (nDayInYear - (wd - 1 + 7) % 7 + 7) / 7; | |
1662 | } | |
239446b4 | 1663 | |
9d9b7755 VZ |
1664 | // FIXME some more elegant way?? |
1665 | WeekDay wdYearStart = wxDateTime(1, Jan, GetYear()).GetWeekDay(); | |
1666 | if ( wdYearStart == Wed || wdYearStart == Thu ) | |
239446b4 VZ |
1667 | { |
1668 | week++; | |
1669 | } | |
1670 | ||
1671 | return week; | |
68ee7c47 VZ |
1672 | } |
1673 | ||
9d9b7755 VZ |
1674 | wxDateTime::wxDateTime_t wxDateTime::GetWeekOfMonth(wxDateTime::WeekFlags flags, |
1675 | const TimeZone& tz) const | |
68ee7c47 | 1676 | { |
9d9b7755 VZ |
1677 | Tm tm = GetTm(tz); |
1678 | wxDateTime dtMonthStart = wxDateTime(1, tm.mon, tm.year); | |
6dc6fda6 | 1679 | int nWeek = GetWeekOfYear(flags) - dtMonthStart.GetWeekOfYear(flags) + 1; |
9d9b7755 | 1680 | if ( nWeek < 0 ) |
68ee7c47 | 1681 | { |
9d9b7755 VZ |
1682 | // this may happen for January when Jan, 1 is the last week of the |
1683 | // previous year | |
1684 | nWeek += IsLeapYear(tm.year - 1) ? 53 : 52; | |
68ee7c47 | 1685 | } |
68ee7c47 | 1686 | |
6dc6fda6 | 1687 | return (wxDateTime::wxDateTime_t)nWeek; |
239446b4 VZ |
1688 | } |
1689 | ||
f0f951fa VZ |
1690 | wxDateTime& wxDateTime::SetToYearDay(wxDateTime::wxDateTime_t yday) |
1691 | { | |
1692 | int year = GetYear(); | |
384223b3 VZ |
1693 | wxDATETIME_CHECK( (0 < yday) && (yday <= GetNumberOfDays(year)), |
1694 | _T("invalid year day") ); | |
f0f951fa VZ |
1695 | |
1696 | bool isLeap = IsLeapYear(year); | |
1697 | for ( Month mon = Jan; mon < Inv_Month; wxNextMonth(mon) ) | |
1698 | { | |
1699 | // for Dec, we can't compare with gs_cumulatedDays[mon + 1], but we | |
1700 | // don't need it neither - because of the CHECK above we know that | |
1701 | // yday lies in December then | |
1702 | if ( (mon == Dec) || (yday < gs_cumulatedDays[isLeap][mon + 1]) ) | |
1703 | { | |
1704 | Set(yday - gs_cumulatedDays[isLeap][mon], mon, year); | |
1705 | ||
1706 | break; | |
1707 | } | |
1708 | } | |
1709 | ||
1710 | return *this; | |
1711 | } | |
1712 | ||
e6ec579c VZ |
1713 | // ---------------------------------------------------------------------------- |
1714 | // Julian day number conversion and related stuff | |
1715 | // ---------------------------------------------------------------------------- | |
1716 | ||
1717 | double wxDateTime::GetJulianDayNumber() const | |
1718 | { | |
299fcbfe VZ |
1719 | // JDN are always expressed for the GMT dates |
1720 | Tm tm(ToTimezone(GMT0).GetTm(GMT0)); | |
e6ec579c VZ |
1721 | |
1722 | double result = GetTruncatedJDN(tm.mday, tm.mon, tm.year); | |
1723 | ||
1724 | // add the part GetTruncatedJDN() neglected | |
1725 | result += 0.5; | |
1726 | ||
1727 | // and now add the time: 86400 sec = 1 JDN | |
1728 | return result + ((double)(60*(60*tm.hour + tm.min) + tm.sec)) / 86400; | |
1729 | } | |
1730 | ||
1731 | double wxDateTime::GetRataDie() const | |
1732 | { | |
1733 | // March 1 of the year 0 is Rata Die day -306 and JDN 1721119.5 | |
1734 | return GetJulianDayNumber() - 1721119.5 - 306; | |
1735 | } | |
1736 | ||
fcc3d7cb | 1737 | // ---------------------------------------------------------------------------- |
299fcbfe | 1738 | // timezone and DST stuff |
fcc3d7cb VZ |
1739 | // ---------------------------------------------------------------------------- |
1740 | ||
299fcbfe | 1741 | int wxDateTime::IsDST(wxDateTime::Country country) const |
fcc3d7cb | 1742 | { |
299fcbfe VZ |
1743 | wxCHECK_MSG( country == Country_Default, -1, |
1744 | _T("country support not implemented") ); | |
1745 | ||
1746 | // use the C RTL for the dates in the standard range | |
1747 | time_t timet = GetTicks(); | |
1748 | if ( timet != (time_t)-1 ) | |
1749 | { | |
1750 | tm *tm = localtime(&timet); | |
1751 | ||
1752 | wxCHECK_MSG( tm, -1, _T("localtime() failed") ); | |
1753 | ||
1754 | return tm->tm_isdst; | |
1755 | } | |
1756 | else | |
1757 | { | |
239446b4 VZ |
1758 | int year = GetYear(); |
1759 | ||
1760 | if ( !IsDSTApplicable(year, country) ) | |
1761 | { | |
1762 | // no DST time in this year in this country | |
1763 | return -1; | |
1764 | } | |
299fcbfe | 1765 | |
239446b4 | 1766 | return IsBetween(GetBeginDST(year, country), GetEndDST(year, country)); |
299fcbfe | 1767 | } |
fcc3d7cb VZ |
1768 | } |
1769 | ||
41acf5c0 | 1770 | wxDateTime& wxDateTime::MakeTimezone(const TimeZone& tz, bool noDST) |
fcc3d7cb | 1771 | { |
479cd5de | 1772 | long secDiff = GetTimeZone() + tz.GetOffset(); |
fcc3d7cb | 1773 | |
41acf5c0 VZ |
1774 | // we need to know whether DST is or not in effect for this date unless |
1775 | // the test disabled by the caller | |
1776 | if ( !noDST && (IsDST() == 1) ) | |
299fcbfe VZ |
1777 | { |
1778 | // FIXME we assume that the DST is always shifted by 1 hour | |
1779 | secDiff -= 3600; | |
1780 | } | |
1781 | ||
f6bcfd97 | 1782 | return Subtract(wxTimeSpan::Seconds(secDiff)); |
fcc3d7cb VZ |
1783 | } |
1784 | ||
b76b015e VZ |
1785 | // ---------------------------------------------------------------------------- |
1786 | // wxDateTime to/from text representations | |
1787 | // ---------------------------------------------------------------------------- | |
1788 | ||
299fcbfe | 1789 | wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const |
b76b015e | 1790 | { |
e6ec579c VZ |
1791 | wxCHECK_MSG( format, _T(""), _T("NULL format in wxDateTime::Format") ); |
1792 | ||
f6bcfd97 BP |
1793 | // we have to use our own implementation if the date is out of range of |
1794 | // strftime() or if we use non standard specificators | |
b76b015e | 1795 | time_t time = GetTicks(); |
f6bcfd97 | 1796 | if ( (time != (time_t)-1) && !wxStrstr(format, _T("%l")) ) |
b76b015e VZ |
1797 | { |
1798 | // use strftime() | |
299fcbfe VZ |
1799 | tm *tm; |
1800 | if ( tz.GetOffset() == -GetTimeZone() ) | |
1801 | { | |
1802 | // we are working with local time | |
1803 | tm = localtime(&time); | |
c5a1681b VZ |
1804 | |
1805 | // should never happen | |
1806 | wxCHECK_MSG( tm, wxEmptyString, _T("localtime() failed") ); | |
299fcbfe VZ |
1807 | } |
1808 | else | |
1809 | { | |
479cd5de | 1810 | time += (int)tz.GetOffset(); |
299fcbfe | 1811 | |
33ac7e6f | 1812 | #if defined(__VMS__) || defined(__WATCOMC__) // time is unsigned so avoid warning |
13111b2a | 1813 | int time2 = (int) time; |
9c2882d9 | 1814 | if ( time2 >= 0 ) |
fb10f04c | 1815 | #else |
9c2882d9 | 1816 | if ( time >= 0 ) |
fb10f04c | 1817 | #endif |
c5a1681b VZ |
1818 | { |
1819 | tm = gmtime(&time); | |
b76b015e | 1820 | |
c5a1681b VZ |
1821 | // should never happen |
1822 | wxCHECK_MSG( tm, wxEmptyString, _T("gmtime() failed") ); | |
1823 | } | |
1824 | else | |
1825 | { | |
1826 | tm = (struct tm *)NULL; | |
1827 | } | |
1828 | } | |
b76b015e | 1829 | |
c5a1681b | 1830 | if ( tm ) |
e6ec579c | 1831 | { |
c5a1681b | 1832 | return CallStrftime(format, tm); |
e6ec579c | 1833 | } |
c5a1681b VZ |
1834 | //else: use generic code below |
1835 | } | |
1836 | ||
68ee7c47 | 1837 | // we only parse ANSI C format specifications here, no POSIX 2 |
f6bcfd97 BP |
1838 | // complications, no GNU extensions but we do add support for a "%l" format |
1839 | // specifier allowing to get the number of milliseconds | |
68ee7c47 | 1840 | Tm tm = GetTm(tz); |
e6ec579c | 1841 | |
68ee7c47 VZ |
1842 | // used for calls to strftime() when we only deal with time |
1843 | struct tm tmTimeOnly; | |
1844 | tmTimeOnly.tm_hour = tm.hour; | |
1845 | tmTimeOnly.tm_min = tm.min; | |
1846 | tmTimeOnly.tm_sec = tm.sec; | |
1847 | tmTimeOnly.tm_wday = 0; | |
1848 | tmTimeOnly.tm_yday = 0; | |
1849 | tmTimeOnly.tm_mday = 1; // any date will do | |
1850 | tmTimeOnly.tm_mon = 0; | |
1851 | tmTimeOnly.tm_year = 76; | |
1852 | tmTimeOnly.tm_isdst = 0; // no DST, we adjust for tz ourselves | |
e6ec579c | 1853 | |
77c3e48a | 1854 | wxString tmp, res, fmt; |
68ee7c47 VZ |
1855 | for ( const wxChar *p = format; *p; p++ ) |
1856 | { | |
1857 | if ( *p != _T('%') ) | |
1858 | { | |
1859 | // copy as is | |
1860 | res += *p; | |
b76b015e | 1861 | |
68ee7c47 VZ |
1862 | continue; |
1863 | } | |
e6ec579c | 1864 | |
77c3e48a | 1865 | // set the default format |
68ee7c47 | 1866 | switch ( *++p ) |
77c3e48a VZ |
1867 | { |
1868 | case _T('Y'): // year has 4 digits | |
1869 | fmt = _T("%04d"); | |
1870 | break; | |
1871 | ||
1872 | case _T('j'): // day of year has 3 digits | |
f6bcfd97 | 1873 | case _T('l'): // milliseconds have 3 digits |
77c3e48a VZ |
1874 | fmt = _T("%03d"); |
1875 | break; | |
1876 | ||
1877 | default: | |
1878 | // it's either another valid format specifier in which case | |
1879 | // the format is "%02d" (for all the rest) or we have the | |
1880 | // field width preceding the format in which case it will | |
1881 | // override the default format anyhow | |
1882 | fmt = _T("%02d"); | |
1883 | } | |
1884 | ||
fc3398f8 VZ |
1885 | bool restart = TRUE; |
1886 | while ( restart ) | |
68ee7c47 | 1887 | { |
fc3398f8 | 1888 | restart = FALSE; |
68ee7c47 | 1889 | |
fc3398f8 VZ |
1890 | // start of the format specification |
1891 | switch ( *p ) | |
1892 | { | |
1893 | case _T('a'): // a weekday name | |
1894 | case _T('A'): | |
1895 | // second parameter should be TRUE for abbreviated names | |
1896 | res += GetWeekDayName(tm.GetWeekDay(), | |
1897 | *p == _T('a') ? Name_Abbr : Name_Full); | |
1898 | break; | |
68ee7c47 | 1899 | |
fc3398f8 VZ |
1900 | case _T('b'): // a month name |
1901 | case _T('B'): | |
1902 | res += GetMonthName(tm.mon, | |
1903 | *p == _T('b') ? Name_Abbr : Name_Full); | |
1904 | break; | |
1905 | ||
1906 | case _T('c'): // locale default date and time representation | |
1907 | case _T('x'): // locale default date representation | |
1908 | // | |
1909 | // the problem: there is no way to know what do these format | |
1910 | // specifications correspond to for the current locale. | |
1911 | // | |
1912 | // the solution: use a hack and still use strftime(): first | |
1913 | // find the YEAR which is a year in the strftime() range (1970 | |
1914 | // - 2038) whose Jan 1 falls on the same week day as the Jan 1 | |
1915 | // of the real year. Then make a copy of the format and | |
1916 | // replace all occurences of YEAR in it with some unique | |
1917 | // string not appearing anywhere else in it, then use | |
1918 | // strftime() to format the date in year YEAR and then replace | |
1919 | // YEAR back by the real year and the unique replacement | |
1920 | // string back with YEAR. Notice that "all occurences of YEAR" | |
1921 | // means all occurences of 4 digit as well as 2 digit form! | |
1922 | // | |
1923 | // the bugs: we assume that neither of %c nor %x contains any | |
1924 | // fields which may change between the YEAR and real year. For | |
1925 | // example, the week number (%U, %W) and the day number (%j) | |
1926 | // will change if one of these years is leap and the other one | |
1927 | // is not! | |
68ee7c47 | 1928 | { |
fc3398f8 VZ |
1929 | // find the YEAR: normally, for any year X, Jan 1 or the |
1930 | // year X + 28 is the same weekday as Jan 1 of X (because | |
1931 | // the weekday advances by 1 for each normal X and by 2 | |
1932 | // for each leap X, hence by 5 every 4 years or by 35 | |
1933 | // which is 0 mod 7 every 28 years) but this rule breaks | |
1934 | // down if there are years between X and Y which are | |
1935 | // divisible by 4 but not leap (i.e. divisible by 100 but | |
1936 | // not 400), hence the correction. | |
1937 | ||
1938 | int yearReal = GetYear(tz); | |
1939 | int mod28 = yearReal % 28; | |
1940 | ||
1941 | // be careful to not go too far - we risk to leave the | |
1942 | // supported range | |
1943 | int year; | |
1944 | if ( mod28 < 10 ) | |
1945 | { | |
1946 | year = 1988 + mod28; // 1988 == 0 (mod 28) | |
1947 | } | |
1948 | else | |
1949 | { | |
1950 | year = 1970 + mod28 - 10; // 1970 == 10 (mod 28) | |
1951 | } | |
e6ec579c | 1952 | |
fc3398f8 VZ |
1953 | int nCentury = year / 100, |
1954 | nCenturyReal = yearReal / 100; | |
c5a1681b | 1955 | |
fc3398f8 VZ |
1956 | // need to adjust for the years divisble by 400 which are |
1957 | // not leap but are counted like leap ones if we just take | |
1958 | // the number of centuries in between for nLostWeekDays | |
1959 | int nLostWeekDays = (nCentury - nCenturyReal) - | |
1960 | (nCentury / 4 - nCenturyReal / 4); | |
c5a1681b | 1961 | |
fc3398f8 VZ |
1962 | // we have to gain back the "lost" weekdays: note that the |
1963 | // effect of this loop is to not do anything to | |
1964 | // nLostWeekDays (which we won't use any more), but to | |
1965 | // (indirectly) set the year correctly | |
1966 | while ( (nLostWeekDays % 7) != 0 ) | |
1967 | { | |
1968 | nLostWeekDays += year++ % 4 ? 1 : 2; | |
1969 | } | |
c5a1681b | 1970 | |
fc3398f8 VZ |
1971 | // at any rate, we couldn't go further than 1988 + 9 + 28! |
1972 | wxASSERT_MSG( year < 2030, | |
1973 | _T("logic error in wxDateTime::Format") ); | |
c5a1681b | 1974 | |
fc3398f8 VZ |
1975 | wxString strYear, strYear2; |
1976 | strYear.Printf(_T("%d"), year); | |
1977 | strYear2.Printf(_T("%d"), year % 100); | |
c5a1681b | 1978 | |
fc3398f8 VZ |
1979 | // find two strings not occuring in format (this is surely |
1980 | // not optimal way of doing it... improvements welcome!) | |
1981 | wxString fmt = format; | |
1982 | wxString replacement = (wxChar)-1; | |
1983 | while ( fmt.Find(replacement) != wxNOT_FOUND ) | |
1984 | { | |
1985 | replacement << (wxChar)-1; | |
1986 | } | |
c5a1681b | 1987 | |
fc3398f8 VZ |
1988 | wxString replacement2 = (wxChar)-2; |
1989 | while ( fmt.Find(replacement) != wxNOT_FOUND ) | |
1990 | { | |
1991 | replacement << (wxChar)-2; | |
1992 | } | |
1993 | ||
1994 | // replace all occurences of year with it | |
1995 | bool wasReplaced = fmt.Replace(strYear, replacement) > 0; | |
1996 | if ( !wasReplaced ) | |
1997 | wasReplaced = fmt.Replace(strYear2, replacement2) > 0; | |
1998 | ||
1999 | // use strftime() to format the same date but in supported | |
2000 | // year | |
2001 | // | |
2002 | // NB: we assume that strftime() doesn't check for the | |
2003 | // date validity and will happily format the date | |
2004 | // corresponding to Feb 29 of a non leap year (which | |
2005 | // may happen if yearReal was leap and year is not) | |
2006 | struct tm tmAdjusted; | |
2007 | InitTm(tmAdjusted); | |
2008 | tmAdjusted.tm_hour = tm.hour; | |
2009 | tmAdjusted.tm_min = tm.min; | |
2010 | tmAdjusted.tm_sec = tm.sec; | |
2011 | tmAdjusted.tm_wday = tm.GetWeekDay(); | |
2012 | tmAdjusted.tm_yday = GetDayOfYear(); | |
2013 | tmAdjusted.tm_mday = tm.mday; | |
2014 | tmAdjusted.tm_mon = tm.mon; | |
2015 | tmAdjusted.tm_year = year - 1900; | |
2016 | tmAdjusted.tm_isdst = 0; // no DST, already adjusted | |
2017 | wxString str = CallStrftime(*p == _T('c') ? _T("%c") | |
2018 | : _T("%x"), | |
2019 | &tmAdjusted); | |
2020 | ||
2021 | // now replace the occurence of 1999 with the real year | |
2022 | wxString strYearReal, strYearReal2; | |
2023 | strYearReal.Printf(_T("%04d"), yearReal); | |
2024 | strYearReal2.Printf(_T("%02d"), yearReal % 100); | |
2025 | str.Replace(strYear, strYearReal); | |
2026 | str.Replace(strYear2, strYearReal2); | |
2027 | ||
2028 | // and replace back all occurences of replacement string | |
2029 | if ( wasReplaced ) | |
2030 | { | |
2031 | str.Replace(replacement2, strYear2); | |
2032 | str.Replace(replacement, strYear); | |
2033 | } | |
2034 | ||
2035 | res += str; | |
68ee7c47 | 2036 | } |
fc3398f8 | 2037 | break; |
c5a1681b | 2038 | |
fc3398f8 VZ |
2039 | case _T('d'): // day of a month (01-31) |
2040 | res += wxString::Format(fmt, tm.mday); | |
2041 | break; | |
68ee7c47 | 2042 | |
fc3398f8 VZ |
2043 | case _T('H'): // hour in 24h format (00-23) |
2044 | res += wxString::Format(fmt, tm.hour); | |
2045 | break; | |
2046 | ||
2047 | case _T('I'): // hour in 12h format (01-12) | |
68ee7c47 | 2048 | { |
fc3398f8 VZ |
2049 | // 24h -> 12h, 0h -> 12h too |
2050 | int hour12 = tm.hour > 12 ? tm.hour - 12 | |
2051 | : tm.hour ? tm.hour : 12; | |
2052 | res += wxString::Format(fmt, hour12); | |
68ee7c47 | 2053 | } |
fc3398f8 | 2054 | break; |
c5a1681b | 2055 | |
fc3398f8 VZ |
2056 | case _T('j'): // day of the year |
2057 | res += wxString::Format(fmt, GetDayOfYear(tz)); | |
2058 | break; | |
68ee7c47 | 2059 | |
f6bcfd97 BP |
2060 | case _T('l'): // milliseconds (NOT STANDARD) |
2061 | res += wxString::Format(fmt, GetMillisecond(tz)); | |
2062 | break; | |
2063 | ||
fc3398f8 VZ |
2064 | case _T('m'): // month as a number (01-12) |
2065 | res += wxString::Format(fmt, tm.mon + 1); | |
2066 | break; | |
68ee7c47 | 2067 | |
fc3398f8 VZ |
2068 | case _T('M'): // minute as a decimal number (00-59) |
2069 | res += wxString::Format(fmt, tm.min); | |
2070 | break; | |
68ee7c47 | 2071 | |
fc3398f8 VZ |
2072 | case _T('p'): // AM or PM string |
2073 | res += CallStrftime(_T("%p"), &tmTimeOnly); | |
2074 | break; | |
68ee7c47 | 2075 | |
fc3398f8 VZ |
2076 | case _T('S'): // second as a decimal number (00-61) |
2077 | res += wxString::Format(fmt, tm.sec); | |
2078 | break; | |
68ee7c47 | 2079 | |
fc3398f8 VZ |
2080 | case _T('U'): // week number in the year (Sunday 1st week day) |
2081 | res += wxString::Format(fmt, GetWeekOfYear(Sunday_First, tz)); | |
2082 | break; | |
68ee7c47 | 2083 | |
fc3398f8 VZ |
2084 | case _T('W'): // week number in the year (Monday 1st week day) |
2085 | res += wxString::Format(fmt, GetWeekOfYear(Monday_First, tz)); | |
2086 | break; | |
68ee7c47 | 2087 | |
fc3398f8 VZ |
2088 | case _T('w'): // weekday as a number (0-6), Sunday = 0 |
2089 | res += wxString::Format(fmt, tm.GetWeekDay()); | |
2090 | break; | |
68ee7c47 | 2091 | |
fc3398f8 | 2092 | // case _T('x'): -- handled with "%c" |
68ee7c47 | 2093 | |
fc3398f8 VZ |
2094 | case _T('X'): // locale default time representation |
2095 | // just use strftime() to format the time for us | |
2096 | res += CallStrftime(_T("%X"), &tmTimeOnly); | |
2097 | break; | |
68ee7c47 | 2098 | |
fc3398f8 VZ |
2099 | case _T('y'): // year without century (00-99) |
2100 | res += wxString::Format(fmt, tm.year % 100); | |
2101 | break; | |
68ee7c47 | 2102 | |
fc3398f8 VZ |
2103 | case _T('Y'): // year with century |
2104 | res += wxString::Format(fmt, tm.year); | |
2105 | break; | |
68ee7c47 | 2106 | |
fc3398f8 VZ |
2107 | case _T('Z'): // timezone name |
2108 | res += CallStrftime(_T("%Z"), &tmTimeOnly); | |
2109 | break; | |
68ee7c47 | 2110 | |
fc3398f8 VZ |
2111 | default: |
2112 | // is it the format width? | |
2113 | fmt.Empty(); | |
2114 | while ( *p == _T('-') || *p == _T('+') || | |
2115 | *p == _T(' ') || wxIsdigit(*p) ) | |
2116 | { | |
2117 | fmt += *p; | |
2118 | } | |
68ee7c47 | 2119 | |
fc3398f8 VZ |
2120 | if ( !fmt.IsEmpty() ) |
2121 | { | |
2122 | // we've only got the flags and width so far in fmt | |
2123 | fmt.Prepend(_T('%')); | |
2124 | fmt.Append(_T('d')); | |
68ee7c47 | 2125 | |
fc3398f8 | 2126 | restart = TRUE; |
68ee7c47 | 2127 | |
fc3398f8 VZ |
2128 | break; |
2129 | } | |
68ee7c47 | 2130 | |
fc3398f8 VZ |
2131 | // no, it wasn't the width |
2132 | wxFAIL_MSG(_T("unknown format specificator")); | |
68ee7c47 | 2133 | |
fc3398f8 | 2134 | // fall through and just copy it nevertheless |
68ee7c47 | 2135 | |
fc3398f8 VZ |
2136 | case _T('%'): // a percent sign |
2137 | res += *p; | |
2138 | break; | |
2139 | ||
2140 | case 0: // the end of string | |
2141 | wxFAIL_MSG(_T("missing format at the end of string")); | |
2142 | ||
2143 | // just put the '%' which was the last char in format | |
2144 | res += _T('%'); | |
2145 | break; | |
2146 | } | |
68ee7c47 | 2147 | } |
c5a1681b VZ |
2148 | } |
2149 | ||
68ee7c47 | 2150 | return res; |
b76b015e | 2151 | } |
fcc3d7cb | 2152 | |
cd0b1709 VZ |
2153 | // this function parses a string in (strict) RFC 822 format: see the section 5 |
2154 | // of the RFC for the detailed description, but briefly it's something of the | |
2155 | // form "Sat, 18 Dec 1999 00:48:30 +0100" | |
2156 | // | |
2157 | // this function is "strict" by design - it must reject anything except true | |
2158 | // RFC822 time specs. | |
2159 | // | |
2160 | // TODO a great candidate for using reg exps | |
2161 | const wxChar *wxDateTime::ParseRfc822Date(const wxChar* date) | |
2162 | { | |
2163 | wxCHECK_MSG( date, (wxChar *)NULL, _T("NULL pointer in wxDateTime::Parse") ); | |
2164 | ||
2165 | const wxChar *p = date; | |
2166 | const wxChar *comma = wxStrchr(p, _T(',')); | |
2167 | if ( comma ) | |
2168 | { | |
2169 | // the part before comma is the weekday | |
2170 | ||
2171 | // skip it for now - we don't use but might check that it really | |
2172 | // corresponds to the specfied date | |
2173 | p = comma + 1; | |
2174 | ||
2175 | if ( *p != _T(' ') ) | |
2176 | { | |
2177 | wxLogDebug(_T("no space after weekday in RFC822 time spec")); | |
2178 | ||
2179 | return (wxChar *)NULL; | |
2180 | } | |
2181 | ||
2182 | p++; // skip space | |
2183 | } | |
2184 | ||
2185 | // the following 1 or 2 digits are the day number | |
2186 | if ( !wxIsdigit(*p) ) | |
2187 | { | |
2188 | wxLogDebug(_T("day number expected in RFC822 time spec, none found")); | |
2189 | ||
2190 | return (wxChar *)NULL; | |
2191 | } | |
2192 | ||
2193 | wxDateTime_t day = *p++ - _T('0'); | |
2194 | if ( wxIsdigit(*p) ) | |
2195 | { | |
2196 | day *= 10; | |
2197 | day += *p++ - _T('0'); | |
2198 | } | |
2199 | ||
2200 | if ( *p++ != _T(' ') ) | |
2201 | { | |
2202 | return (wxChar *)NULL; | |
2203 | } | |
2204 | ||
2205 | // the following 3 letters specify the month | |
2206 | wxString monName(p, 3); | |
2207 | Month mon; | |
2208 | if ( monName == _T("Jan") ) | |
2209 | mon = Jan; | |
2210 | else if ( monName == _T("Feb") ) | |
2211 | mon = Feb; | |
2212 | else if ( monName == _T("Mar") ) | |
2213 | mon = Mar; | |
2214 | else if ( monName == _T("Apr") ) | |
2215 | mon = Apr; | |
2216 | else if ( monName == _T("May") ) | |
2217 | mon = May; | |
2218 | else if ( monName == _T("Jun") ) | |
2219 | mon = Jun; | |
2220 | else if ( monName == _T("Jul") ) | |
2221 | mon = Jul; | |
2222 | else if ( monName == _T("Aug") ) | |
2223 | mon = Aug; | |
2224 | else if ( monName == _T("Sep") ) | |
2225 | mon = Sep; | |
2226 | else if ( monName == _T("Oct") ) | |
2227 | mon = Oct; | |
2228 | else if ( monName == _T("Nov") ) | |
2229 | mon = Nov; | |
2230 | else if ( monName == _T("Dec") ) | |
2231 | mon = Dec; | |
2232 | else | |
2233 | { | |
2234 | wxLogDebug(_T("Invalid RFC 822 month name '%s'"), monName.c_str()); | |
2235 | ||
2236 | return (wxChar *)NULL; | |
2237 | } | |
2238 | ||
2239 | p += 3; | |
2240 | ||
2241 | if ( *p++ != _T(' ') ) | |
2242 | { | |
2243 | return (wxChar *)NULL; | |
2244 | } | |
2245 | ||
2246 | // next is the year | |
2247 | if ( !wxIsdigit(*p) ) | |
2248 | { | |
2249 | // no year? | |
2250 | return (wxChar *)NULL; | |
2251 | } | |
2252 | ||
2253 | int year = *p++ - _T('0'); | |
2254 | ||
2255 | if ( !wxIsdigit(*p) ) | |
2256 | { | |
2257 | // should have at least 2 digits in the year | |
2258 | return (wxChar *)NULL; | |
2259 | } | |
2260 | ||
2261 | year *= 10; | |
2262 | year += *p++ - _T('0'); | |
2263 | ||
2264 | // is it a 2 digit year (as per original RFC 822) or a 4 digit one? | |
2265 | if ( wxIsdigit(*p) ) | |
2266 | { | |
2267 | year *= 10; | |
2268 | year += *p++ - _T('0'); | |
2269 | ||
2270 | if ( !wxIsdigit(*p) ) | |
2271 | { | |
2272 | // no 3 digit years please | |
2273 | return (wxChar *)NULL; | |
2274 | } | |
2275 | ||
2276 | year *= 10; | |
2277 | year += *p++ - _T('0'); | |
2278 | } | |
2279 | ||
2280 | if ( *p++ != _T(' ') ) | |
2281 | { | |
2282 | return (wxChar *)NULL; | |
2283 | } | |
2284 | ||
2285 | // time is in the format hh:mm:ss and seconds are optional | |
2286 | if ( !wxIsdigit(*p) ) | |
2287 | { | |
2288 | return (wxChar *)NULL; | |
2289 | } | |
2290 | ||
2291 | wxDateTime_t hour = *p++ - _T('0'); | |
2292 | ||
2293 | if ( !wxIsdigit(*p) ) | |
2294 | { | |
2295 | return (wxChar *)NULL; | |
2296 | } | |
2297 | ||
2298 | hour *= 10; | |
2299 | hour += *p++ - _T('0'); | |
2300 | ||
2301 | if ( *p++ != _T(':') ) | |
2302 | { | |
2303 | return (wxChar *)NULL; | |
2304 | } | |
2305 | ||
2306 | if ( !wxIsdigit(*p) ) | |
2307 | { | |
2308 | return (wxChar *)NULL; | |
2309 | } | |
2310 | ||
2311 | wxDateTime_t min = *p++ - _T('0'); | |
2312 | ||
2313 | if ( !wxIsdigit(*p) ) | |
2314 | { | |
2315 | return (wxChar *)NULL; | |
2316 | } | |
2317 | ||
2318 | min *= 10; | |
2319 | min += *p++ - _T('0'); | |
2320 | ||
2321 | wxDateTime_t sec = 0; | |
2322 | if ( *p++ == _T(':') ) | |
2323 | { | |
2324 | if ( !wxIsdigit(*p) ) | |
2325 | { | |
2326 | return (wxChar *)NULL; | |
2327 | } | |
2328 | ||
2329 | sec = *p++ - _T('0'); | |
2330 | ||
2331 | if ( !wxIsdigit(*p) ) | |
2332 | { | |
2333 | return (wxChar *)NULL; | |
2334 | } | |
2335 | ||
2336 | sec *= 10; | |
2337 | sec += *p++ - _T('0'); | |
2338 | } | |
2339 | ||
2340 | if ( *p++ != _T(' ') ) | |
2341 | { | |
2342 | return (wxChar *)NULL; | |
2343 | } | |
2344 | ||
2345 | // and now the interesting part: the timezone | |
40973ea5 | 2346 | int offset; |
cd0b1709 VZ |
2347 | if ( *p == _T('-') || *p == _T('+') ) |
2348 | { | |
2349 | // the explicit offset given: it has the form of hhmm | |
2350 | bool plus = *p++ == _T('+'); | |
2351 | ||
2352 | if ( !wxIsdigit(*p) || !wxIsdigit(*(p + 1)) ) | |
2353 | { | |
2354 | return (wxChar *)NULL; | |
2355 | } | |
2356 | ||
2357 | // hours | |
2358 | offset = 60*(10*(*p - _T('0')) + (*(p + 1) - _T('0'))); | |
2359 | ||
2360 | p += 2; | |
2361 | ||
2362 | if ( !wxIsdigit(*p) || !wxIsdigit(*(p + 1)) ) | |
2363 | { | |
2364 | return (wxChar *)NULL; | |
2365 | } | |
2366 | ||
2367 | // minutes | |
2368 | offset += 10*(*p - _T('0')) + (*(p + 1) - _T('0')); | |
2369 | ||
2370 | if ( !plus ) | |
2371 | { | |
2372 | offset = -offset; | |
2373 | } | |
2374 | ||
2375 | p += 2; | |
2376 | } | |
2377 | else | |
2378 | { | |
2379 | // the symbolic timezone given: may be either military timezone or one | |
2380 | // of standard abbreviations | |
2381 | if ( !*(p + 1) ) | |
2382 | { | |
2383 | // military: Z = UTC, J unused, A = -1, ..., Y = +12 | |
2384 | static const int offsets[26] = | |
2385 | { | |
2386 | //A B C D E F G H I J K L M | |
2387 | -1, -2, -3, -4, -5, -6, -7, -8, -9, 0, -10, -11, -12, | |
2388 | //N O P R Q S T U V W Z Y Z | |
2389 | +1, +2, +3, +4, +5, +6, +7, +8, +9, +10, +11, +12, 0 | |
2390 | }; | |
2391 | ||
2392 | if ( *p < _T('A') || *p > _T('Z') || *p == _T('J') ) | |
2393 | { | |
2394 | wxLogDebug(_T("Invalid militaty timezone '%c'"), *p); | |
2395 | ||
2396 | return (wxChar *)NULL; | |
2397 | } | |
2398 | ||
2399 | offset = offsets[*p++ - _T('A')]; | |
2400 | } | |
2401 | else | |
2402 | { | |
2403 | // abbreviation | |
2404 | wxString tz = p; | |
2405 | if ( tz == _T("UT") || tz == _T("UTC") || tz == _T("GMT") ) | |
2406 | offset = 0; | |
2407 | else if ( tz == _T("AST") ) | |
2408 | offset = AST - GMT0; | |
2409 | else if ( tz == _T("ADT") ) | |
2410 | offset = ADT - GMT0; | |
2411 | else if ( tz == _T("EST") ) | |
2412 | offset = EST - GMT0; | |
2413 | else if ( tz == _T("EDT") ) | |
2414 | offset = EDT - GMT0; | |
2415 | else if ( tz == _T("CST") ) | |
2416 | offset = CST - GMT0; | |
2417 | else if ( tz == _T("CDT") ) | |
2418 | offset = CDT - GMT0; | |
2419 | else if ( tz == _T("MST") ) | |
2420 | offset = MST - GMT0; | |
2421 | else if ( tz == _T("MDT") ) | |
2422 | offset = MDT - GMT0; | |
2423 | else if ( tz == _T("PST") ) | |
2424 | offset = PST - GMT0; | |
2425 | else if ( tz == _T("PDT") ) | |
2426 | offset = PDT - GMT0; | |
2427 | else | |
2428 | { | |
2429 | wxLogDebug(_T("Unknown RFC 822 timezone '%s'"), p); | |
2430 | ||
2431 | return (wxChar *)NULL; | |
2432 | } | |
2433 | ||
2434 | p += tz.length(); | |
2435 | } | |
2436 | ||
2437 | // make it minutes | |
2438 | offset *= 60; | |
2439 | } | |
2440 | ||
2441 | // the spec was correct | |
2442 | Set(day, mon, year, hour, min, sec); | |
487c1f7e | 2443 | MakeTimezone((wxDateTime_t)(60*offset)); |
cd0b1709 VZ |
2444 | |
2445 | return p; | |
2446 | } | |
2447 | ||
f0f951fa VZ |
2448 | const wxChar *wxDateTime::ParseFormat(const wxChar *date, |
2449 | const wxChar *format, | |
2450 | const wxDateTime& dateDef) | |
cd0b1709 VZ |
2451 | { |
2452 | wxCHECK_MSG( date && format, (wxChar *)NULL, | |
f0f951fa | 2453 | _T("NULL pointer in wxDateTime::ParseFormat()") ); |
cd0b1709 | 2454 | |
f0f951fa VZ |
2455 | wxString str; |
2456 | unsigned long num; | |
cd0b1709 | 2457 | |
f0f951fa VZ |
2458 | // what fields have we found? |
2459 | bool haveWDay = FALSE, | |
2460 | haveYDay = FALSE, | |
2461 | haveDay = FALSE, | |
2462 | haveMon = FALSE, | |
2463 | haveYear = FALSE, | |
2464 | haveHour = FALSE, | |
2465 | haveMin = FALSE, | |
2466 | haveSec = FALSE; | |
2467 | ||
2468 | bool hourIsIn12hFormat = FALSE, // or in 24h one? | |
2469 | isPM = FALSE; // AM by default | |
2470 | ||
2471 | // and the value of the items we have (init them to get rid of warnings) | |
2472 | wxDateTime_t sec = 0, | |
2473 | min = 0, | |
2474 | hour = 0; | |
2475 | WeekDay wday = Inv_WeekDay; | |
2476 | wxDateTime_t yday = 0, | |
2477 | mday = 0; | |
2478 | wxDateTime::Month mon = Inv_Month; | |
2479 | int year = 0; | |
2480 | ||
2481 | const wxChar *input = date; | |
2482 | for ( const wxChar *fmt = format; *fmt; fmt++ ) | |
2483 | { | |
2484 | if ( *fmt != _T('%') ) | |
2485 | { | |
2486 | if ( wxIsspace(*fmt) ) | |
2487 | { | |
2488 | // a white space in the format string matches 0 or more white | |
2489 | // spaces in the input | |
2490 | while ( wxIsspace(*input) ) | |
2491 | { | |
2492 | input++; | |
2493 | } | |
2494 | } | |
2495 | else // !space | |
2496 | { | |
2497 | // any other character (not whitespace, not '%') must be | |
2498 | // matched by itself in the input | |
2499 | if ( *input++ != *fmt ) | |
2500 | { | |
2501 | // no match | |
2502 | return (wxChar *)NULL; | |
2503 | } | |
2504 | } | |
2505 | ||
2506 | // done with this format char | |
2507 | continue; | |
2508 | } | |
2509 | ||
2510 | // start of a format specification | |
f6bcfd97 BP |
2511 | |
2512 | // parse the optional width | |
2513 | size_t width = 0; | |
2514 | while ( isdigit(*++fmt) ) | |
2515 | { | |
2516 | width *= 10; | |
2517 | width += *fmt - _T('0'); | |
2518 | } | |
2519 | ||
2520 | // then the format itself | |
2521 | switch ( *fmt ) | |
f0f951fa VZ |
2522 | { |
2523 | case _T('a'): // a weekday name | |
2524 | case _T('A'): | |
2525 | { | |
2526 | int flag = *fmt == _T('a') ? Name_Abbr : Name_Full; | |
2527 | wday = GetWeekDayFromName(GetAlphaToken(input), flag); | |
2528 | if ( wday == Inv_WeekDay ) | |
2529 | { | |
2530 | // no match | |
2531 | return (wxChar *)NULL; | |
2532 | } | |
2533 | } | |
2534 | haveWDay = TRUE; | |
2535 | break; | |
2536 | ||
2537 | case _T('b'): // a month name | |
2538 | case _T('B'): | |
2539 | { | |
2540 | int flag = *fmt == _T('b') ? Name_Abbr : Name_Full; | |
2541 | mon = GetMonthFromName(GetAlphaToken(input), flag); | |
2542 | if ( mon == Inv_Month ) | |
2543 | { | |
2544 | // no match | |
2545 | return (wxChar *)NULL; | |
2546 | } | |
2547 | } | |
2548 | haveMon = TRUE; | |
2549 | break; | |
2550 | ||
2551 | case _T('c'): // locale default date and time representation | |
2552 | { | |
2553 | wxDateTime dt; | |
2554 | ||
2555 | // this is the format which corresponds to ctime() output | |
2556 | // and strptime("%c") should parse it, so try it first | |
41acf5c0 | 2557 | static const wxChar *fmtCtime = _T("%a %b %d %H:%M:%S %Y"); |
f0f951fa VZ |
2558 | |
2559 | const wxChar *result = dt.ParseFormat(input, fmtCtime); | |
2560 | if ( !result ) | |
2561 | { | |
2562 | result = dt.ParseFormat(input, _T("%x %X")); | |
2563 | } | |
2564 | ||
2565 | if ( !result ) | |
2566 | { | |
2567 | result = dt.ParseFormat(input, _T("%X %x")); | |
2568 | } | |
2569 | ||
2570 | if ( !result ) | |
2571 | { | |
2572 | // we've tried everything and still no match | |
2573 | return (wxChar *)NULL; | |
2574 | } | |
2575 | ||
be4017f8 VZ |
2576 | Tm tm = dt.GetTm(); |
2577 | ||
2578 | haveDay = haveMon = haveYear = | |
2579 | haveHour = haveMin = haveSec = TRUE; | |
2580 | ||
2581 | hour = tm.hour; | |
2582 | min = tm.min; | |
2583 | sec = tm.sec; | |
2584 | ||
2585 | year = tm.year; | |
2586 | mon = tm.mon; | |
2587 | mday = tm.mday; | |
2588 | ||
f0f951fa VZ |
2589 | input = result; |
2590 | } | |
2591 | break; | |
2592 | ||
2593 | case _T('d'): // day of a month (01-31) | |
f6bcfd97 BP |
2594 | if ( !GetNumericToken(width, input, &num) || |
2595 | (num > 31) || (num < 1) ) | |
f0f951fa VZ |
2596 | { |
2597 | // no match | |
2598 | return (wxChar *)NULL; | |
2599 | } | |
2600 | ||
2601 | // we can't check whether the day range is correct yet, will | |
2602 | // do it later - assume ok for now | |
2603 | haveDay = TRUE; | |
2604 | mday = (wxDateTime_t)num; | |
2605 | break; | |
5f287370 | 2606 | |
f0f951fa | 2607 | case _T('H'): // hour in 24h format (00-23) |
f6bcfd97 | 2608 | if ( !GetNumericToken(width, input, &num) || (num > 23) ) |
f0f951fa VZ |
2609 | { |
2610 | // no match | |
2611 | return (wxChar *)NULL; | |
2612 | } | |
2613 | ||
2614 | haveHour = TRUE; | |
2615 | hour = (wxDateTime_t)num; | |
2616 | break; | |
2617 | ||
2618 | case _T('I'): // hour in 12h format (01-12) | |
f6bcfd97 | 2619 | if ( !GetNumericToken(width, input, &num) || !num || (num > 12) ) |
f0f951fa VZ |
2620 | { |
2621 | // no match | |
2622 | return (wxChar *)NULL; | |
2623 | } | |
2624 | ||
2625 | haveHour = TRUE; | |
2626 | hourIsIn12hFormat = TRUE; | |
479cd5de | 2627 | hour = (wxDateTime_t)(num % 12); // 12 should be 0 |
f0f951fa VZ |
2628 | break; |
2629 | ||
2630 | case _T('j'): // day of the year | |
f6bcfd97 | 2631 | if ( !GetNumericToken(width, input, &num) || !num || (num > 366) ) |
f0f951fa VZ |
2632 | { |
2633 | // no match | |
2634 | return (wxChar *)NULL; | |
2635 | } | |
2636 | ||
2637 | haveYDay = TRUE; | |
2638 | yday = (wxDateTime_t)num; | |
2639 | break; | |
2640 | ||
2641 | case _T('m'): // month as a number (01-12) | |
f6bcfd97 | 2642 | if ( !GetNumericToken(width, input, &num) || !num || (num > 12) ) |
f0f951fa VZ |
2643 | { |
2644 | // no match | |
2645 | return (wxChar *)NULL; | |
2646 | } | |
2647 | ||
2648 | haveMon = TRUE; | |
be4017f8 | 2649 | mon = (Month)(num - 1); |
f0f951fa VZ |
2650 | break; |
2651 | ||
2652 | case _T('M'): // minute as a decimal number (00-59) | |
f6bcfd97 | 2653 | if ( !GetNumericToken(width, input, &num) || (num > 59) ) |
f0f951fa VZ |
2654 | { |
2655 | // no match | |
2656 | return (wxChar *)NULL; | |
2657 | } | |
2658 | ||
2659 | haveMin = TRUE; | |
2660 | min = (wxDateTime_t)num; | |
2661 | break; | |
2662 | ||
2663 | case _T('p'): // AM or PM string | |
2664 | { | |
2665 | wxString am, pm, token = GetAlphaToken(input); | |
2666 | ||
2667 | GetAmPmStrings(&am, &pm); | |
2668 | if ( token.CmpNoCase(pm) == 0 ) | |
2669 | { | |
2670 | isPM = TRUE; | |
2671 | } | |
2672 | else if ( token.CmpNoCase(am) != 0 ) | |
2673 | { | |
2674 | // no match | |
2675 | return (wxChar *)NULL; | |
2676 | } | |
2677 | } | |
2678 | break; | |
2679 | ||
2680 | case _T('r'): // time as %I:%M:%S %p | |
2681 | { | |
2682 | wxDateTime dt; | |
2683 | input = dt.ParseFormat(input, _T("%I:%M:%S %p")); | |
2684 | if ( !input ) | |
2685 | { | |
2686 | // no match | |
2687 | return (wxChar *)NULL; | |
2688 | } | |
2689 | ||
2690 | haveHour = haveMin = haveSec = TRUE; | |
2691 | ||
2692 | Tm tm = dt.GetTm(); | |
2693 | hour = tm.hour; | |
2694 | min = tm.min; | |
2695 | sec = tm.sec; | |
2696 | } | |
2697 | break; | |
2698 | ||
2699 | case _T('R'): // time as %H:%M | |
2700 | { | |
2701 | wxDateTime dt; | |
2702 | input = dt.ParseFormat(input, _T("%H:%M")); | |
2703 | if ( !input ) | |
2704 | { | |
2705 | // no match | |
2706 | return (wxChar *)NULL; | |
2707 | } | |
2708 | ||
2709 | haveHour = haveMin = TRUE; | |
2710 | ||
2711 | Tm tm = dt.GetTm(); | |
2712 | hour = tm.hour; | |
2713 | min = tm.min; | |
2714 | } | |
2715 | ||
2716 | case _T('S'): // second as a decimal number (00-61) | |
f6bcfd97 | 2717 | if ( !GetNumericToken(width, input, &num) || (num > 61) ) |
f0f951fa VZ |
2718 | { |
2719 | // no match | |
2720 | return (wxChar *)NULL; | |
2721 | } | |
2722 | ||
2723 | haveSec = TRUE; | |
2724 | sec = (wxDateTime_t)num; | |
2725 | break; | |
2726 | ||
2727 | case _T('T'): // time as %H:%M:%S | |
2728 | { | |
2729 | wxDateTime dt; | |
2730 | input = dt.ParseFormat(input, _T("%H:%M:%S")); | |
2731 | if ( !input ) | |
2732 | { | |
2733 | // no match | |
2734 | return (wxChar *)NULL; | |
2735 | } | |
2736 | ||
2737 | haveHour = haveMin = haveSec = TRUE; | |
2738 | ||
2739 | Tm tm = dt.GetTm(); | |
2740 | hour = tm.hour; | |
2741 | min = tm.min; | |
2742 | sec = tm.sec; | |
2743 | } | |
be4017f8 | 2744 | break; |
f0f951fa VZ |
2745 | |
2746 | case _T('w'): // weekday as a number (0-6), Sunday = 0 | |
f6bcfd97 | 2747 | if ( !GetNumericToken(width, input, &num) || (wday > 6) ) |
f0f951fa VZ |
2748 | { |
2749 | // no match | |
2750 | return (wxChar *)NULL; | |
2751 | } | |
2752 | ||
2753 | haveWDay = TRUE; | |
2754 | wday = (WeekDay)num; | |
2755 | break; | |
2756 | ||
2757 | case _T('x'): // locale default date representation | |
2758 | #ifdef HAVE_STRPTIME | |
2759 | // try using strptime() - it may fail even if the input is | |
2760 | // correct but the date is out of range, so we will fall back | |
2761 | // to our generic code anyhow (FIXME !Unicode friendly) | |
2762 | { | |
2763 | struct tm tm; | |
2764 | const wxChar *result = strptime(input, "%x", &tm); | |
2765 | if ( result ) | |
2766 | { | |
2767 | input = result; | |
2768 | ||
2769 | haveDay = haveMon = haveYear = TRUE; | |
2770 | ||
2771 | year = 1900 + tm.tm_year; | |
2772 | mon = (Month)tm.tm_mon; | |
2773 | mday = tm.tm_mday; | |
2774 | ||
2775 | break; | |
2776 | } | |
2777 | } | |
2778 | #endif // HAVE_STRPTIME | |
2779 | ||
2780 | // TODO query the LOCALE_IDATE setting under Win32 | |
2781 | { | |
2782 | wxDateTime dt; | |
2783 | ||
41acf5c0 | 2784 | wxString fmtDate, fmtDateAlt; |
f0f951fa VZ |
2785 | if ( IsWestEuropeanCountry(GetCountry()) || |
2786 | GetCountry() == Russia ) | |
2787 | { | |
2788 | fmtDate = _T("%d/%m/%y"); | |
41acf5c0 | 2789 | fmtDateAlt = _T("%m/%d/%y"); |
f0f951fa VZ |
2790 | } |
2791 | else // assume USA | |
2792 | { | |
2793 | fmtDate = _T("%m/%d/%y"); | |
41acf5c0 | 2794 | fmtDateAlt = _T("%d/%m/%y"); |
f0f951fa VZ |
2795 | } |
2796 | ||
2797 | const wxChar *result = dt.ParseFormat(input, fmtDate); | |
41acf5c0 VZ |
2798 | |
2799 | if ( !result ) | |
2800 | { | |
2801 | // ok, be nice and try another one | |
2802 | result = dt.ParseFormat(input, fmtDateAlt); | |
2803 | } | |
2804 | ||
f0f951fa VZ |
2805 | if ( !result ) |
2806 | { | |
2807 | // bad luck | |
2808 | return (wxChar *)NULL; | |
2809 | } | |
2810 | ||
2811 | Tm tm = dt.GetTm(); | |
2812 | ||
2813 | haveDay = haveMon = haveYear = TRUE; | |
2814 | ||
2815 | year = tm.year; | |
2816 | mon = tm.mon; | |
2817 | mday = tm.mday; | |
2818 | ||
2819 | input = result; | |
2820 | } | |
2821 | ||
2822 | break; | |
2823 | ||
2824 | case _T('X'): // locale default time representation | |
2825 | #ifdef HAVE_STRPTIME | |
2826 | { | |
2827 | // use strptime() to do it for us (FIXME !Unicode friendly) | |
2828 | struct tm tm; | |
2829 | input = strptime(input, "%X", &tm); | |
2830 | if ( !input ) | |
2831 | { | |
2832 | return (wxChar *)NULL; | |
2833 | } | |
2834 | ||
2835 | haveHour = haveMin = haveSec = TRUE; | |
2836 | ||
2837 | hour = tm.tm_hour; | |
2838 | min = tm.tm_min; | |
2839 | sec = tm.tm_sec; | |
2840 | } | |
2841 | #else // !HAVE_STRPTIME | |
2842 | // TODO under Win32 we can query the LOCALE_ITIME system | |
2843 | // setting which says whether the default time format is | |
2844 | // 24 or 12 hour | |
2845 | { | |
2846 | // try to parse what follows as "%H:%M:%S" and, if this | |
2847 | // fails, as "%I:%M:%S %p" - this should catch the most | |
2848 | // common cases | |
2849 | wxDateTime dt; | |
2850 | ||
2851 | const wxChar *result = dt.ParseFormat(input, _T("%T")); | |
2852 | if ( !result ) | |
2853 | { | |
2854 | result = dt.ParseFormat(input, _T("%r")); | |
2855 | } | |
2856 | ||
2857 | if ( !result ) | |
2858 | { | |
2859 | // no match | |
2860 | return (wxChar *)NULL; | |
2861 | } | |
2862 | ||
2863 | haveHour = haveMin = haveSec = TRUE; | |
2864 | ||
2865 | Tm tm = dt.GetTm(); | |
2866 | hour = tm.hour; | |
2867 | min = tm.min; | |
2868 | sec = tm.sec; | |
2869 | ||
2870 | input = result; | |
2871 | } | |
2872 | #endif // HAVE_STRPTIME/!HAVE_STRPTIME | |
2873 | break; | |
2874 | ||
2875 | case _T('y'): // year without century (00-99) | |
f6bcfd97 | 2876 | if ( !GetNumericToken(width, input, &num) || (num > 99) ) |
f0f951fa VZ |
2877 | { |
2878 | // no match | |
2879 | return (wxChar *)NULL; | |
2880 | } | |
2881 | ||
2882 | haveYear = TRUE; | |
f6bcfd97 BP |
2883 | |
2884 | // TODO should have an option for roll over date instead of | |
2885 | // hard coding it here | |
2886 | year = (num > 30 ? 1900 : 2000) + (wxDateTime_t)num; | |
f0f951fa VZ |
2887 | break; |
2888 | ||
2889 | case _T('Y'): // year with century | |
f6bcfd97 | 2890 | if ( !GetNumericToken(width, input, &num) ) |
f0f951fa VZ |
2891 | { |
2892 | // no match | |
2893 | return (wxChar *)NULL; | |
2894 | } | |
2895 | ||
be4017f8 VZ |
2896 | haveYear = TRUE; |
2897 | year = (wxDateTime_t)num; | |
f0f951fa VZ |
2898 | break; |
2899 | ||
2900 | case _T('Z'): // timezone name | |
2901 | wxFAIL_MSG(_T("TODO")); | |
2902 | break; | |
2903 | ||
2904 | case _T('%'): // a percent sign | |
2905 | if ( *input++ != _T('%') ) | |
2906 | { | |
2907 | // no match | |
2908 | return (wxChar *)NULL; | |
2909 | } | |
2910 | break; | |
2911 | ||
2912 | case 0: // the end of string | |
2913 | wxFAIL_MSG(_T("unexpected format end")); | |
2914 | ||
2915 | // fall through | |
2916 | ||
2917 | default: // not a known format spec | |
2918 | return (wxChar *)NULL; | |
2919 | } | |
2920 | } | |
2921 | ||
2922 | // format matched, try to construct a date from what we have now | |
2923 | Tm tmDef; | |
2924 | if ( dateDef.IsValid() ) | |
2925 | { | |
2926 | // take this date as default | |
2927 | tmDef = dateDef.GetTm(); | |
2928 | } | |
c3302e7e | 2929 | else if ( IsValid() ) |
f0f951fa VZ |
2930 | { |
2931 | // if this date is valid, don't change it | |
2932 | tmDef = GetTm(); | |
2933 | } | |
2934 | else | |
2935 | { | |
2936 | // no default and this date is invalid - fall back to Today() | |
2937 | tmDef = Today().GetTm(); | |
2938 | } | |
2939 | ||
2940 | Tm tm = tmDef; | |
2941 | ||
2942 | // set the date | |
2943 | if ( haveYear ) | |
2944 | { | |
2945 | tm.year = year; | |
2946 | } | |
2947 | ||
2948 | // TODO we don't check here that the values are consistent, if both year | |
2949 | // day and month/day were found, we just ignore the year day and we | |
2950 | // also always ignore the week day | |
2951 | if ( haveMon && haveDay ) | |
2952 | { | |
be4017f8 VZ |
2953 | if ( mday > GetNumOfDaysInMonth(tm.year, mon) ) |
2954 | { | |
2955 | wxLogDebug(_T("bad month day in wxDateTime::ParseFormat")); | |
2956 | ||
2957 | return (wxChar *)NULL; | |
2958 | } | |
2959 | ||
f0f951fa VZ |
2960 | tm.mon = mon; |
2961 | tm.mday = mday; | |
2962 | } | |
2963 | else if ( haveYDay ) | |
2964 | { | |
be4017f8 VZ |
2965 | if ( yday > GetNumberOfDays(tm.year) ) |
2966 | { | |
2967 | wxLogDebug(_T("bad year day in wxDateTime::ParseFormat")); | |
2968 | ||
2969 | return (wxChar *)NULL; | |
2970 | } | |
2971 | ||
f0f951fa VZ |
2972 | Tm tm2 = wxDateTime(1, Jan, tm.year).SetToYearDay(yday).GetTm(); |
2973 | ||
2974 | tm.mon = tm2.mon; | |
2975 | tm.mday = tm2.mday; | |
2976 | } | |
2977 | ||
2978 | // deal with AM/PM | |
2979 | if ( haveHour && hourIsIn12hFormat && isPM ) | |
2980 | { | |
2981 | // translate to 24hour format | |
2982 | hour += 12; | |
2983 | } | |
2984 | //else: either already in 24h format or no translation needed | |
2985 | ||
2986 | // set the time | |
2987 | if ( haveHour ) | |
2988 | { | |
5f287370 | 2989 | tm.hour = hour; |
f0f951fa VZ |
2990 | } |
2991 | ||
2992 | if ( haveMin ) | |
2993 | { | |
2994 | tm.min = min; | |
2995 | } | |
2996 | ||
2997 | if ( haveSec ) | |
2998 | { | |
2999 | tm.sec = sec; | |
3000 | } | |
3001 | ||
3002 | Set(tm); | |
3003 | ||
3004 | return input; | |
cd0b1709 VZ |
3005 | } |
3006 | ||
3007 | const wxChar *wxDateTime::ParseDateTime(const wxChar *date) | |
3008 | { | |
3009 | wxCHECK_MSG( date, (wxChar *)NULL, _T("NULL pointer in wxDateTime::Parse") ); | |
3010 | ||
f0f951fa VZ |
3011 | // there is a public domain version of getdate.y, but it only works for |
3012 | // English... | |
cd0b1709 VZ |
3013 | wxFAIL_MSG(_T("TODO")); |
3014 | ||
3015 | return (wxChar *)NULL; | |
3016 | } | |
3017 | ||
3018 | const wxChar *wxDateTime::ParseDate(const wxChar *date) | |
3019 | { | |
3020 | // this is a simplified version of ParseDateTime() which understands only | |
3021 | // "today" (for wxDate compatibility) and digits only otherwise (and not | |
3022 | // all esoteric constructions ParseDateTime() knows about) | |
3023 | ||
3024 | wxCHECK_MSG( date, (wxChar *)NULL, _T("NULL pointer in wxDateTime::Parse") ); | |
3025 | ||
3026 | const wxChar *p = date; | |
3027 | while ( wxIsspace(*p) ) | |
3028 | p++; | |
3029 | ||
fd9f9f4c VZ |
3030 | // some special cases |
3031 | static struct | |
cd0b1709 | 3032 | { |
fd9f9f4c VZ |
3033 | const wxChar *str; |
3034 | int dayDiffFromToday; | |
3035 | } literalDates[] = | |
3036 | { | |
3037 | { wxTRANSLATE("today"), 0 }, | |
3038 | { wxTRANSLATE("yesterday"), -1 }, | |
3039 | { wxTRANSLATE("tomorrow"), 1 }, | |
3040 | }; | |
3041 | ||
3042 | for ( size_t n = 0; n < WXSIZEOF(literalDates); n++ ) | |
3043 | { | |
3044 | wxString date = wxGetTranslation(literalDates[n].str); | |
3045 | size_t len = date.length(); | |
3b415ba4 | 3046 | if ( wxStrlen(p) >= len && (wxString(p, len).CmpNoCase(date) == 0) ) |
fd9f9f4c VZ |
3047 | { |
3048 | // nothing can follow this, so stop here | |
3049 | p += len; | |
cd0b1709 | 3050 | |
fd9f9f4c VZ |
3051 | int dayDiffFromToday = literalDates[n].dayDiffFromToday; |
3052 | *this = Today(); | |
3053 | if ( dayDiffFromToday ) | |
3054 | { | |
3055 | *this += wxDateSpan::Days(dayDiffFromToday); | |
3056 | } | |
cd0b1709 | 3057 | |
fd9f9f4c VZ |
3058 | return p; |
3059 | } | |
cd0b1709 VZ |
3060 | } |
3061 | ||
3ca6a5f0 BP |
3062 | // We try to guess what we have here: for each new (numeric) token, we |
3063 | // determine if it can be a month, day or a year. Of course, there is an | |
3064 | // ambiguity as some numbers may be days as well as months, so we also | |
3065 | // have the ability to back track. | |
3066 | ||
cd0b1709 VZ |
3067 | // what do we have? |
3068 | bool haveDay = FALSE, // the months day? | |
3069 | haveWDay = FALSE, // the day of week? | |
3070 | haveMon = FALSE, // the month? | |
3071 | haveYear = FALSE; // the year? | |
3072 | ||
3073 | // and the value of the items we have (init them to get rid of warnings) | |
3074 | WeekDay wday = Inv_WeekDay; | |
3075 | wxDateTime_t day = 0; | |
3076 | wxDateTime::Month mon = Inv_Month; | |
3077 | int year = 0; | |
3078 | ||
3079 | // tokenize the string | |
f6bcfd97 BP |
3080 | size_t nPosCur = 0; |
3081 | static const wxChar *dateDelimiters = _T(".,/-\t\n "); | |
3082 | wxStringTokenizer tok(p, dateDelimiters); | |
cd0b1709 VZ |
3083 | while ( tok.HasMoreTokens() ) |
3084 | { | |
3085 | wxString token = tok.GetNextToken(); | |
3ca6a5f0 BP |
3086 | if ( !token ) |
3087 | continue; | |
cd0b1709 VZ |
3088 | |
3089 | // is it a number? | |
3090 | unsigned long val; | |
3091 | if ( token.ToULong(&val) ) | |
3092 | { | |
3093 | // guess what this number is | |
3094 | ||
3095 | bool isDay = FALSE, | |
3096 | isMonth = FALSE, | |
3ca6a5f0 BP |
3097 | isYear = FALSE; |
3098 | ||
3099 | if ( !haveMon && val > 0 && val <= 12 ) | |
cd0b1709 | 3100 | { |
3ca6a5f0 BP |
3101 | // assume it is month |
3102 | isMonth = TRUE; | |
3103 | } | |
3104 | else // not the month | |
3105 | { | |
3106 | wxDateTime_t maxDays = haveMon | |
3107 | ? GetNumOfDaysInMonth(haveYear ? year : Inv_Year, mon) | |
3108 | : 31; | |
3109 | ||
3110 | // can it be day? | |
3897b707 | 3111 | if ( (val == 0) || (val > (unsigned long)maxDays) ) // cast to shut up compiler warning in BCC |
cd0b1709 | 3112 | { |
3ca6a5f0 | 3113 | isYear = TRUE; |
cd0b1709 | 3114 | } |
3ca6a5f0 | 3115 | else |
cd0b1709 VZ |
3116 | { |
3117 | isDay = TRUE; | |
cd0b1709 VZ |
3118 | } |
3119 | } | |
3120 | ||
cd0b1709 VZ |
3121 | if ( isYear ) |
3122 | { | |
3123 | if ( haveYear ) | |
cd0b1709 | 3124 | break; |
cd0b1709 VZ |
3125 | |
3126 | haveYear = TRUE; | |
3127 | ||
479cd5de | 3128 | year = (wxDateTime_t)val; |
cd0b1709 | 3129 | } |
3ca6a5f0 | 3130 | else if ( isDay ) |
cd0b1709 | 3131 | { |
3ca6a5f0 | 3132 | if ( haveDay ) |
cd0b1709 | 3133 | break; |
cd0b1709 | 3134 | |
3ca6a5f0 | 3135 | haveDay = TRUE; |
cd0b1709 | 3136 | |
3ca6a5f0 | 3137 | day = (wxDateTime_t)val; |
cd0b1709 | 3138 | } |
3ca6a5f0 | 3139 | else if ( isMonth ) |
cd0b1709 | 3140 | { |
3ca6a5f0 | 3141 | haveMon = TRUE; |
cd0b1709 | 3142 | |
3ca6a5f0 | 3143 | mon = (Month)(val - 1); |
cd0b1709 VZ |
3144 | } |
3145 | } | |
3146 | else // not a number | |
3147 | { | |
f6bcfd97 BP |
3148 | // be careful not to overwrite the current mon value |
3149 | Month mon2 = GetMonthFromName(token, Name_Full | Name_Abbr); | |
3150 | if ( mon2 != Inv_Month ) | |
cd0b1709 VZ |
3151 | { |
3152 | // it's a month | |
3153 | if ( haveMon ) | |
3154 | { | |
6411a32c VZ |
3155 | // but we already have a month - maybe we guessed wrong? |
3156 | if ( !haveDay ) | |
3157 | { | |
f5cd9787 | 3158 | // no need to check in month range as always < 12, but |
6411a32c VZ |
3159 | // the days are counted from 1 unlike the months |
3160 | day = (wxDateTime_t)mon + 1; | |
3161 | haveDay = TRUE; | |
3162 | } | |
3163 | else | |
3164 | { | |
3165 | // could possible be the year (doesn't the year come | |
3166 | // before the month in the japanese format?) (FIXME) | |
3167 | break; | |
f5cd9787 | 3168 | } |
cd0b1709 VZ |
3169 | } |
3170 | ||
f6bcfd97 BP |
3171 | mon = mon2; |
3172 | ||
cd0b1709 VZ |
3173 | haveMon = TRUE; |
3174 | } | |
6411a32c | 3175 | else // not a valid month name |
cd0b1709 | 3176 | { |
f0f951fa | 3177 | wday = GetWeekDayFromName(token, Name_Full | Name_Abbr); |
cd0b1709 VZ |
3178 | if ( wday != Inv_WeekDay ) |
3179 | { | |
3180 | // a week day | |
3181 | if ( haveWDay ) | |
3182 | { | |
3183 | break; | |
3184 | } | |
3185 | ||
3186 | haveWDay = TRUE; | |
3187 | } | |
6411a32c | 3188 | else // not a valid weekday name |
cd0b1709 VZ |
3189 | { |
3190 | // try the ordinals | |
3191 | static const wxChar *ordinals[] = | |
3192 | { | |
3193 | wxTRANSLATE("first"), | |
3194 | wxTRANSLATE("second"), | |
3195 | wxTRANSLATE("third"), | |
3196 | wxTRANSLATE("fourth"), | |
3197 | wxTRANSLATE("fifth"), | |
3198 | wxTRANSLATE("sixth"), | |
3199 | wxTRANSLATE("seventh"), | |
3200 | wxTRANSLATE("eighth"), | |
3201 | wxTRANSLATE("ninth"), | |
3202 | wxTRANSLATE("tenth"), | |
3203 | wxTRANSLATE("eleventh"), | |
3204 | wxTRANSLATE("twelfth"), | |
3205 | wxTRANSLATE("thirteenth"), | |
3206 | wxTRANSLATE("fourteenth"), | |
3207 | wxTRANSLATE("fifteenth"), | |
3208 | wxTRANSLATE("sixteenth"), | |
3209 | wxTRANSLATE("seventeenth"), | |
3210 | wxTRANSLATE("eighteenth"), | |
3211 | wxTRANSLATE("nineteenth"), | |
3212 | wxTRANSLATE("twentieth"), | |
3213 | // that's enough - otherwise we'd have problems with | |
6411a32c | 3214 | // composite (or not) ordinals |
cd0b1709 VZ |
3215 | }; |
3216 | ||
3217 | size_t n; | |
3218 | for ( n = 0; n < WXSIZEOF(ordinals); n++ ) | |
3219 | { | |
3220 | if ( token.CmpNoCase(ordinals[n]) == 0 ) | |
3221 | { | |
3222 | break; | |
3223 | } | |
3224 | } | |
3225 | ||
3226 | if ( n == WXSIZEOF(ordinals) ) | |
3227 | { | |
3228 | // stop here - something unknown | |
3229 | break; | |
3230 | } | |
3231 | ||
3232 | // it's a day | |
3233 | if ( haveDay ) | |
3234 | { | |
3235 | // don't try anything here (as in case of numeric day | |
3236 | // above) - the symbolic day spec should always | |
3237 | // precede the month/year | |
3238 | break; | |
3239 | } | |
3240 | ||
3241 | haveDay = TRUE; | |
3242 | ||
33ac7e6f | 3243 | day = (wxDateTime_t)(n + 1); |
cd0b1709 VZ |
3244 | } |
3245 | } | |
3246 | } | |
f6bcfd97 BP |
3247 | |
3248 | nPosCur = tok.GetPosition(); | |
cd0b1709 VZ |
3249 | } |
3250 | ||
3251 | // either no more tokens or the scan was stopped by something we couldn't | |
3252 | // parse - in any case, see if we can construct a date from what we have | |
3253 | if ( !haveDay && !haveWDay ) | |
3254 | { | |
f6bcfd97 | 3255 | wxLogDebug(_T("ParseDate: no day, no weekday hence no date.")); |
cd0b1709 VZ |
3256 | |
3257 | return (wxChar *)NULL; | |
3258 | } | |
3259 | ||
3260 | if ( haveWDay && (haveMon || haveYear || haveDay) && | |
f6bcfd97 | 3261 | !(haveDay && haveMon && haveYear) ) |
cd0b1709 VZ |
3262 | { |
3263 | // without adjectives (which we don't support here) the week day only | |
3264 | // makes sense completely separately or with the full date | |
3265 | // specification (what would "Wed 1999" mean?) | |
3266 | return (wxChar *)NULL; | |
3267 | } | |
3268 | ||
f6bcfd97 BP |
3269 | if ( !haveWDay && haveYear && !(haveDay && haveMon) ) |
3270 | { | |
3271 | // may be we have month and day instead of day and year? | |
3272 | if ( haveDay && !haveMon ) | |
3273 | { | |
3274 | if ( day <= 12 ) | |
3275 | { | |
3276 | // exchange day and month | |
3277 | mon = (wxDateTime::Month)(day - 1); | |
3278 | ||
3279 | // we're in the current year then | |
f5cd9787 VZ |
3280 | if ( (year > 0) && |
3281 | (unsigned)year <= GetNumOfDaysInMonth(Inv_Year, mon) ) | |
f6bcfd97 BP |
3282 | { |
3283 | day = year; | |
3284 | ||
3285 | haveMon = TRUE; | |
3286 | haveYear = FALSE; | |
3287 | } | |
3288 | //else: no, can't exchange, leave haveMon == FALSE | |
3289 | } | |
3290 | } | |
3291 | ||
3292 | if ( !haveMon ) | |
3293 | { | |
3294 | // if we give the year, month and day must be given too | |
3295 | wxLogDebug(_T("ParseDate: day and month should be specified if year is.")); | |
3296 | ||
3297 | return (wxChar *)NULL; | |
3298 | } | |
3299 | } | |
3300 | ||
cd0b1709 VZ |
3301 | if ( !haveMon ) |
3302 | { | |
3303 | mon = GetCurrentMonth(); | |
3304 | } | |
3305 | ||
3306 | if ( !haveYear ) | |
3307 | { | |
3308 | year = GetCurrentYear(); | |
3309 | } | |
3310 | ||
3311 | if ( haveDay ) | |
3312 | { | |
3313 | Set(day, mon, year); | |
3314 | ||
3315 | if ( haveWDay ) | |
3316 | { | |
3317 | // check that it is really the same | |
3318 | if ( GetWeekDay() != wday ) | |
3319 | { | |
3320 | // inconsistency detected | |
f6bcfd97 BP |
3321 | wxLogDebug(_T("ParseDate: inconsistent day/weekday.")); |
3322 | ||
cd0b1709 VZ |
3323 | return (wxChar *)NULL; |
3324 | } | |
3325 | } | |
3326 | } | |
3327 | else // haveWDay | |
3328 | { | |
3329 | *this = Today(); | |
3330 | ||
3331 | SetToWeekDayInSameWeek(wday); | |
3332 | } | |
3333 | ||
f6bcfd97 BP |
3334 | // return the pointer to the first unparsed char |
3335 | p += nPosCur; | |
3336 | if ( nPosCur && wxStrchr(dateDelimiters, *(p - 1)) ) | |
3337 | { | |
3338 | // if we couldn't parse the token after the delimiter, put back the | |
3339 | // delimiter as well | |
3340 | p--; | |
3341 | } | |
3342 | ||
3343 | return p; | |
cd0b1709 VZ |
3344 | } |
3345 | ||
3346 | const wxChar *wxDateTime::ParseTime(const wxChar *time) | |
3347 | { | |
3348 | wxCHECK_MSG( time, (wxChar *)NULL, _T("NULL pointer in wxDateTime::Parse") ); | |
3349 | ||
f0f951fa VZ |
3350 | // first try some extra things |
3351 | static const struct | |
3352 | { | |
3353 | const wxChar *name; | |
3354 | wxDateTime_t hour; | |
3355 | } stdTimes[] = | |
3356 | { | |
3357 | { wxTRANSLATE("noon"), 12 }, | |
3358 | { wxTRANSLATE("midnight"), 00 }, | |
3359 | // anything else? | |
3360 | }; | |
cd0b1709 | 3361 | |
f0f951fa VZ |
3362 | for ( size_t n = 0; n < WXSIZEOF(stdTimes); n++ ) |
3363 | { | |
3364 | wxString timeString = wxGetTranslation(stdTimes[n].name); | |
3365 | size_t len = timeString.length(); | |
3366 | if ( timeString.CmpNoCase(wxString(time, len)) == 0 ) | |
3367 | { | |
3368 | Set(stdTimes[n].hour, 0, 0); | |
3369 | ||
3370 | return time + len; | |
3371 | } | |
3372 | } | |
3373 | ||
3374 | // try all time formats we may think about starting with the standard one | |
3375 | const wxChar *result = ParseFormat(time, _T("%X")); | |
3376 | if ( !result ) | |
3377 | { | |
3378 | // normally, it's the same, but why not try it? | |
3379 | result = ParseFormat(time, _T("%H:%M:%S")); | |
3380 | } | |
3381 | ||
3382 | if ( !result ) | |
3383 | { | |
3384 | // 12hour with AM/PM? | |
3385 | result = ParseFormat(time, _T("%I:%M:%S %p")); | |
3386 | } | |
3387 | ||
3388 | if ( !result ) | |
3389 | { | |
3390 | // without seconds? | |
3391 | result = ParseFormat(time, _T("%H:%M")); | |
3392 | } | |
3393 | ||
3394 | if ( !result ) | |
3395 | { | |
3396 | // 12hour with AM/PM but without seconds? | |
3397 | result = ParseFormat(time, _T("%I:%M %p")); | |
3398 | } | |
3399 | ||
3400 | if ( !result ) | |
3401 | { | |
3402 | // just the hour? | |
3403 | result = ParseFormat(time, _T("%H")); | |
3404 | } | |
3405 | ||
3406 | if ( !result ) | |
3407 | { | |
3408 | // just the hour and AM/PM? | |
3409 | result = ParseFormat(time, _T("%I %p")); | |
3410 | } | |
3411 | ||
3412 | // TODO: parse timezones | |
3413 | ||
3414 | return result; | |
cd0b1709 VZ |
3415 | } |
3416 | ||
4f6aed9c VZ |
3417 | // ---------------------------------------------------------------------------- |
3418 | // Workdays and holidays support | |
3419 | // ---------------------------------------------------------------------------- | |
3420 | ||
3421 | bool wxDateTime::IsWorkDay(Country WXUNUSED(country)) const | |
3422 | { | |
3423 | return !wxDateTimeHolidayAuthority::IsHoliday(*this); | |
3424 | } | |
3425 | ||
fcc3d7cb VZ |
3426 | // ============================================================================ |
3427 | // wxTimeSpan | |
3428 | // ============================================================================ | |
3429 | ||
033400eb VZ |
3430 | // this enum is only used in wxTimeSpan::Format() below but we can't declare |
3431 | // it locally to the method as it provokes an internal compiler error in egcs | |
3432 | // 2.91.60 when building with -O2 | |
3433 | enum TimeSpanPart | |
3434 | { | |
3435 | Part_Week, | |
3436 | Part_Day, | |
3437 | Part_Hour, | |
3438 | Part_Min, | |
3439 | Part_Sec, | |
3440 | Part_MSec | |
3441 | }; | |
3442 | ||
e6ec579c VZ |
3443 | // not all strftime(3) format specifiers make sense here because, for example, |
3444 | // a time span doesn't have a year nor a timezone | |
3445 | // | |
3446 | // Here are the ones which are supported (all of them are supported by strftime | |
3447 | // as well): | |
3448 | // %H hour in 24 hour format | |
3449 | // %M minute (00 - 59) | |
3450 | // %S second (00 - 59) | |
3451 | // %% percent sign | |
3452 | // | |
3453 | // Also, for MFC CTimeSpan compatibility, we support | |
3454 | // %D number of days | |
3455 | // | |
3456 | // And, to be better than MFC :-), we also have | |
3457 | // %E number of wEeks | |
3458 | // %l milliseconds (000 - 999) | |
fcc3d7cb VZ |
3459 | wxString wxTimeSpan::Format(const wxChar *format) const |
3460 | { | |
e6ec579c | 3461 | wxCHECK_MSG( format, _T(""), _T("NULL format in wxTimeSpan::Format") ); |
fcc3d7cb VZ |
3462 | |
3463 | wxString str; | |
5b735202 | 3464 | str.Alloc(wxStrlen(format)); |
e6ec579c | 3465 | |
df05cdc5 VZ |
3466 | // Suppose we have wxTimeSpan ts(1 /* hour */, 2 /* min */, 3 /* sec */) |
3467 | // | |
3468 | // Then, of course, ts.Format("%H:%M:%S") must return "01:02:03", but the | |
3469 | // question is what should ts.Format("%S") do? The code here returns "3273" | |
3470 | // in this case (i.e. the total number of seconds, not just seconds % 60) | |
3471 | // because, for me, this call means "give me entire time interval in | |
3472 | // seconds" and not "give me the seconds part of the time interval" | |
3473 | // | |
3474 | // If we agree that it should behave like this, it is clear that the | |
3475 | // interpretation of each format specifier depends on the presence of the | |
3476 | // other format specs in the string: if there was "%H" before "%M", we | |
3477 | // should use GetMinutes() % 60, otherwise just GetMinutes() &c | |
3478 | ||
3479 | // we remember the most important unit found so far | |
033400eb | 3480 | TimeSpanPart partBiggest = Part_MSec; |
df05cdc5 | 3481 | |
f6bcfd97 | 3482 | for ( const wxChar *pch = format; *pch; pch++ ) |
e6ec579c VZ |
3483 | { |
3484 | wxChar ch = *pch; | |
3485 | ||
f6bcfd97 | 3486 | if ( ch == _T('%') ) |
e6ec579c | 3487 | { |
df05cdc5 VZ |
3488 | // the start of the format specification of the printf() below |
3489 | wxString fmtPrefix = _T('%'); | |
3490 | ||
3491 | // the number | |
3492 | long n; | |
e6ec579c | 3493 | |
f6bcfd97 | 3494 | ch = *++pch; // get the format spec char |
e6ec579c VZ |
3495 | switch ( ch ) |
3496 | { | |
3497 | default: | |
3498 | wxFAIL_MSG( _T("invalid format character") ); | |
3499 | // fall through | |
3500 | ||
f6bcfd97 | 3501 | case _T('%'): |
df05cdc5 VZ |
3502 | str += ch; |
3503 | ||
3504 | // skip the part below switch | |
3505 | continue; | |
e6ec579c | 3506 | |
f6bcfd97 | 3507 | case _T('D'): |
df05cdc5 VZ |
3508 | n = GetDays(); |
3509 | if ( partBiggest < Part_Day ) | |
3510 | { | |
3511 | n %= DAYS_PER_WEEK; | |
3512 | } | |
3513 | else | |
3514 | { | |
3515 | partBiggest = Part_Day; | |
3516 | } | |
e6ec579c VZ |
3517 | break; |
3518 | ||
f6bcfd97 | 3519 | case _T('E'): |
df05cdc5 VZ |
3520 | partBiggest = Part_Week; |
3521 | n = GetWeeks(); | |
e6ec579c VZ |
3522 | break; |
3523 | ||
f6bcfd97 | 3524 | case _T('H'): |
df05cdc5 VZ |
3525 | n = GetHours(); |
3526 | if ( partBiggest < Part_Hour ) | |
3527 | { | |
3528 | n %= HOURS_PER_DAY; | |
3529 | } | |
3530 | else | |
3531 | { | |
3532 | partBiggest = Part_Hour; | |
3533 | } | |
3534 | ||
3535 | fmtPrefix += _T("02"); | |
e6ec579c VZ |
3536 | break; |
3537 | ||
f6bcfd97 | 3538 | case _T('l'): |
df05cdc5 VZ |
3539 | n = GetMilliseconds().ToLong(); |
3540 | if ( partBiggest < Part_MSec ) | |
3541 | { | |
3542 | n %= 1000; | |
3543 | } | |
3544 | //else: no need to reset partBiggest to Part_MSec, it is | |
3545 | // the least significant one anyhow | |
3546 | ||
3547 | fmtPrefix += _T("03"); | |
e6ec579c VZ |
3548 | break; |
3549 | ||
f6bcfd97 | 3550 | case _T('M'): |
df05cdc5 VZ |
3551 | n = GetMinutes(); |
3552 | if ( partBiggest < Part_Min ) | |
3553 | { | |
3554 | n %= MIN_PER_HOUR; | |
3555 | } | |
3556 | else | |
3557 | { | |
3558 | partBiggest = Part_Min; | |
3559 | } | |
3560 | ||
3561 | fmtPrefix += _T("02"); | |
e6ec579c VZ |
3562 | break; |
3563 | ||
f6bcfd97 | 3564 | case _T('S'): |
df05cdc5 VZ |
3565 | n = GetSeconds().ToLong(); |
3566 | if ( partBiggest < Part_Sec ) | |
3567 | { | |
3568 | n %= SEC_PER_MIN; | |
3569 | } | |
3570 | else | |
3571 | { | |
3572 | partBiggest = Part_Sec; | |
3573 | } | |
3574 | ||
3575 | fmtPrefix += _T("02"); | |
e6ec579c VZ |
3576 | break; |
3577 | } | |
3578 | ||
df05cdc5 VZ |
3579 | str += wxString::Format(fmtPrefix + _T("ld"), n); |
3580 | } | |
3581 | else | |
3582 | { | |
3583 | // normal character, just copy | |
3584 | str += ch; | |
e6ec579c | 3585 | } |
e6ec579c | 3586 | } |
fcc3d7cb VZ |
3587 | |
3588 | return str; | |
3589 | } | |
4f6aed9c VZ |
3590 | |
3591 | // ============================================================================ | |
3592 | // wxDateTimeHolidayAuthority and related classes | |
3593 | // ============================================================================ | |
3594 | ||
3595 | #include "wx/arrimpl.cpp" | |
3596 | ||
f6bcfd97 | 3597 | WX_DEFINE_OBJARRAY(wxDateTimeArray); |
4f6aed9c VZ |
3598 | |
3599 | static int wxCMPFUNC_CONV | |
3600 | wxDateTimeCompareFunc(wxDateTime **first, wxDateTime **second) | |
3601 | { | |
3602 | wxDateTime dt1 = **first, | |
3603 | dt2 = **second; | |
3604 | ||
3605 | return dt1 == dt2 ? 0 : dt1 < dt2 ? -1 : +1; | |
3606 | } | |
3607 | ||
3608 | // ---------------------------------------------------------------------------- | |
3609 | // wxDateTimeHolidayAuthority | |
3610 | // ---------------------------------------------------------------------------- | |
3611 | ||
3612 | wxHolidayAuthoritiesArray wxDateTimeHolidayAuthority::ms_authorities; | |
3613 | ||
3614 | /* static */ | |
3615 | bool wxDateTimeHolidayAuthority::IsHoliday(const wxDateTime& dt) | |
3616 | { | |
3617 | size_t count = ms_authorities.GetCount(); | |
3618 | for ( size_t n = 0; n < count; n++ ) | |
3619 | { | |
3620 | if ( ms_authorities[n]->DoIsHoliday(dt) ) | |
3621 | { | |
3622 | return TRUE; | |
3623 | } | |
3624 | } | |
3625 | ||
3626 | return FALSE; | |
3627 | } | |
3628 | ||
3629 | /* static */ | |
3630 | size_t | |
3631 | wxDateTimeHolidayAuthority::GetHolidaysInRange(const wxDateTime& dtStart, | |
3632 | const wxDateTime& dtEnd, | |
3633 | wxDateTimeArray& holidays) | |
3634 | { | |
3635 | wxDateTimeArray hol; | |
3636 | ||
3637 | holidays.Empty(); | |
3638 | ||
3639 | size_t count = ms_authorities.GetCount(); | |
6dc6fda6 | 3640 | for ( size_t nAuth = 0; nAuth < count; nAuth++ ) |
4f6aed9c | 3641 | { |
6dc6fda6 | 3642 | ms_authorities[nAuth]->DoGetHolidaysInRange(dtStart, dtEnd, hol); |
4f6aed9c VZ |
3643 | |
3644 | WX_APPEND_ARRAY(holidays, hol); | |
3645 | } | |
3646 | ||
3647 | holidays.Sort(wxDateTimeCompareFunc); | |
3648 | ||
3649 | return holidays.GetCount(); | |
3650 | } | |
3651 | ||
3652 | /* static */ | |
3653 | void wxDateTimeHolidayAuthority::ClearAllAuthorities() | |
3654 | { | |
3655 | WX_CLEAR_ARRAY(ms_authorities); | |
3656 | } | |
3657 | ||
3658 | /* static */ | |
3659 | void wxDateTimeHolidayAuthority::AddAuthority(wxDateTimeHolidayAuthority *auth) | |
3660 | { | |
3661 | ms_authorities.Add(auth); | |
3662 | } | |
3663 | ||
3664 | // ---------------------------------------------------------------------------- | |
3665 | // wxDateTimeWorkDays | |
3666 | // ---------------------------------------------------------------------------- | |
3667 | ||
3668 | bool wxDateTimeWorkDays::DoIsHoliday(const wxDateTime& dt) const | |
3669 | { | |
3670 | wxDateTime::WeekDay wd = dt.GetWeekDay(); | |
3671 | ||
3672 | return (wd == wxDateTime::Sun) || (wd == wxDateTime::Sat); | |
3673 | } | |
3674 | ||
3675 | size_t wxDateTimeWorkDays::DoGetHolidaysInRange(const wxDateTime& dtStart, | |
3676 | const wxDateTime& dtEnd, | |
3677 | wxDateTimeArray& holidays) const | |
3678 | { | |
3679 | if ( dtStart > dtEnd ) | |
3680 | { | |
3681 | wxFAIL_MSG( _T("invalid date range in GetHolidaysInRange") ); | |
3682 | ||
3683 | return 0u; | |
3684 | } | |
3685 | ||
3686 | holidays.Empty(); | |
3687 | ||
3688 | // instead of checking all days, start with the first Sat after dtStart and | |
3689 | // end with the last Sun before dtEnd | |
3690 | wxDateTime dtSatFirst = dtStart.GetNextWeekDay(wxDateTime::Sat), | |
3691 | dtSatLast = dtEnd.GetPrevWeekDay(wxDateTime::Sat), | |
3692 | dtSunFirst = dtStart.GetNextWeekDay(wxDateTime::Sun), | |
3693 | dtSunLast = dtEnd.GetPrevWeekDay(wxDateTime::Sun), | |
3694 | dt; | |
3695 | ||
3696 | for ( dt = dtSatFirst; dt <= dtSatLast; dt += wxDateSpan::Week() ) | |
3697 | { | |
3698 | holidays.Add(dt); | |
3699 | } | |
3700 | ||
3701 | for ( dt = dtSunFirst; dt <= dtSunLast; dt += wxDateSpan::Week() ) | |
3702 | { | |
3703 | holidays.Add(dt); | |
3704 | } | |
3705 | ||
3706 | return holidays.GetCount(); | |
3707 | } | |
3e0b743f JS |
3708 | |
3709 |