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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 | // | |
55d99c7a | 16 | // Licence: wxWindows licence |
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 | ||
14f355c2 | 55 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) |
0979c962 VZ |
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 | ||
1e6feb95 VZ |
66 | #if !defined(wxUSE_DATETIME) || wxUSE_DATETIME |
67 | ||
0979c962 VZ |
68 | #ifndef WX_PRECOMP |
69 | #include "wx/string.h" | |
0979c962 VZ |
70 | #include "wx/log.h" |
71 | #endif // WX_PRECOMP | |
72 | ||
54800df8 | 73 | #include "wx/intl.h" |
fcc3d7cb | 74 | #include "wx/thread.h" |
cd0b1709 | 75 | #include "wx/tokenzr.h" |
7281ab04 | 76 | #include "wx/module.h" |
fcc3d7cb | 77 | |
ff0ea71c GT |
78 | #include <ctype.h> |
79 | ||
0979c962 | 80 | #include "wx/datetime.h" |
3422227a | 81 | #include "wx/stopwatch.h" // for wxGetLocalTimeMillis() |
0979c962 | 82 | |
bd4a25bc JS |
83 | const long wxDateTime::TIME_T_FACTOR = 1000l; |
84 | ||
cb73e600 SC |
85 | #if wxUSE_EXTENDED_RTTI |
86 | ||
87 | template<> void wxStringReadValue(const wxString &s , wxDateTime &data ) | |
88 | { | |
89 | data.ParseFormat(s,wxT("%Y-%m-%d %H:%M:%S")) ; | |
90 | } | |
91 | ||
92 | template<> void wxStringWriteValue(wxString &s , const wxDateTime &data ) | |
93 | { | |
94 | s = data.Format(wxT("%Y-%m-%d %H:%M:%S")) ; | |
95 | } | |
96 | ||
8805dbab | 97 | wxCUSTOM_TYPE_INFO(wxDateTime, wxToStringConverter<wxDateTime> , wxFromStringConverter<wxDateTime>) |
cb73e600 SC |
98 | |
99 | #endif | |
100 | ||
101 | // | |
f0f951fa VZ |
102 | // ---------------------------------------------------------------------------- |
103 | // conditional compilation | |
104 | // ---------------------------------------------------------------------------- | |
6de20863 | 105 | |
2423ef22 VZ |
106 | #if defined(HAVE_STRPTIME) && defined(__GLIBC__) && \ |
107 | ((__GLIBC__ == 2) && (__GLIBC_MINOR__ == 0)) | |
f0f951fa VZ |
108 | // glibc 2.0.7 strptime() is broken - the following snippet causes it to |
109 | // crash (instead of just failing): | |
110 | // | |
111 | // strncpy(buf, "Tue Dec 21 20:25:40 1999", 128); | |
112 | // strptime(buf, "%x", &tm); | |
113 | // | |
114 | // so don't use it | |
115 | #undef HAVE_STRPTIME | |
116 | #endif // broken strptime() | |
117 | ||
31907d03 SC |
118 | #if defined(__MWERKS__) && wxUSE_UNICODE |
119 | #include <wtime.h> | |
120 | #endif | |
121 | ||
0779cc9a | 122 | #if !defined(WX_TIMEZONE) && !defined(WX_GMTOFF_IN_TM) |
ad0dc53b | 123 | #if defined(__BORLANDC__) || defined(__MINGW32__) || defined(__VISAGECPP__) |
f0f951fa | 124 | #define WX_TIMEZONE _timezone |
8208e181 | 125 | #elif defined(__MWERKS__) |
f6bcfd97 | 126 | long wxmw_timezone = 28800; |
c4e1b7f2 | 127 | #define WX_TIMEZONE wxmw_timezone |
5283098e | 128 | #elif defined(__DJGPP__) || defined(__WINE__) |
713a0efc | 129 | #include <sys/timeb.h> |
c4e1b7f2 | 130 | #include <values.h> |
713a0efc VS |
131 | static long wxGetTimeZone() |
132 | { | |
c4e1b7f2 VS |
133 | static long timezone = MAXLONG; // invalid timezone |
134 | if (timezone == MAXLONG) | |
135 | { | |
136 | struct timeb tb; | |
137 | ftime(&tb); | |
138 | timezone = tb.timezone; | |
139 | } | |
140 | return timezone; | |
713a0efc VS |
141 | } |
142 | #define WX_TIMEZONE wxGetTimeZone() | |
0779cc9a GD |
143 | #elif defined(__DARWIN__) |
144 | #define WX_GMTOFF_IN_TM | |
f0f951fa VZ |
145 | #else // unknown platform - try timezone |
146 | #define WX_TIMEZONE timezone | |
147 | #endif | |
0779cc9a | 148 | #endif // !WX_TIMEZONE && !WX_GMTOFF_IN_TM |
c25a510b | 149 | |
384223b3 VZ |
150 | // ---------------------------------------------------------------------------- |
151 | // macros | |
152 | // ---------------------------------------------------------------------------- | |
153 | ||
154 | // debugging helper: just a convenient replacement of wxCHECK() | |
155 | #define wxDATETIME_CHECK(expr, msg) \ | |
156 | if ( !(expr) ) \ | |
157 | { \ | |
158 | wxFAIL_MSG(msg); \ | |
159 | *this = wxInvalidDateTime; \ | |
160 | return *this; \ | |
161 | } | |
162 | ||
4f6aed9c VZ |
163 | // ---------------------------------------------------------------------------- |
164 | // private classes | |
165 | // ---------------------------------------------------------------------------- | |
166 | ||
167 | class wxDateTimeHolidaysModule : public wxModule | |
168 | { | |
169 | public: | |
170 | virtual bool OnInit() | |
171 | { | |
172 | wxDateTimeHolidayAuthority::AddAuthority(new wxDateTimeWorkDays); | |
173 | ||
174 | return TRUE; | |
175 | } | |
176 | ||
177 | virtual void OnExit() | |
178 | { | |
179 | wxDateTimeHolidayAuthority::ClearAllAuthorities(); | |
df5168c4 | 180 | wxDateTimeHolidayAuthority::ms_authorities.clear(); |
4f6aed9c VZ |
181 | } |
182 | ||
183 | private: | |
184 | DECLARE_DYNAMIC_CLASS(wxDateTimeHolidaysModule) | |
185 | }; | |
186 | ||
187 | IMPLEMENT_DYNAMIC_CLASS(wxDateTimeHolidaysModule, wxModule) | |
188 | ||
b76b015e VZ |
189 | // ---------------------------------------------------------------------------- |
190 | // constants | |
191 | // ---------------------------------------------------------------------------- | |
192 | ||
e6ec579c | 193 | // some trivial ones |
fcc3d7cb VZ |
194 | static const int MONTHS_IN_YEAR = 12; |
195 | ||
df05cdc5 VZ |
196 | static const int SEC_PER_MIN = 60; |
197 | ||
198 | static const int MIN_PER_HOUR = 60; | |
199 | ||
200 | static const int HOURS_PER_DAY = 24; | |
fcc3d7cb | 201 | |
e6ec579c VZ |
202 | static const long SECONDS_PER_DAY = 86400l; |
203 | ||
df05cdc5 VZ |
204 | static const int DAYS_PER_WEEK = 7; |
205 | ||
e6ec579c VZ |
206 | static const long MILLISECONDS_PER_DAY = 86400000l; |
207 | ||
208 | // this is the integral part of JDN of the midnight of Jan 1, 1970 | |
209 | // (i.e. JDN(Jan 1, 1970) = 2440587.5) | |
cd0b1709 | 210 | static const long EPOCH_JDN = 2440587l; |
b76b015e | 211 | |
1ef54dcf VZ |
212 | // the date of JDN -0.5 (as we don't work with fractional parts, this is the |
213 | // reference date for us) is Nov 24, 4714BC | |
214 | static const int JDN_0_YEAR = -4713; | |
215 | static const int JDN_0_MONTH = wxDateTime::Nov; | |
216 | static const int JDN_0_DAY = 24; | |
217 | ||
218 | // the constants used for JDN calculations | |
cd0b1709 VZ |
219 | static const long JDN_OFFSET = 32046l; |
220 | static const long DAYS_PER_5_MONTHS = 153l; | |
221 | static const long DAYS_PER_4_YEARS = 1461l; | |
222 | static const long DAYS_PER_400_YEARS = 146097l; | |
1ef54dcf | 223 | |
f0f951fa VZ |
224 | // this array contains the cumulated number of days in all previous months for |
225 | // normal and leap years | |
226 | static const wxDateTime::wxDateTime_t gs_cumulatedDays[2][MONTHS_IN_YEAR] = | |
227 | { | |
228 | { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 }, | |
229 | { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335 } | |
230 | }; | |
231 | ||
fcc3d7cb | 232 | // ---------------------------------------------------------------------------- |
2ef31e80 VZ |
233 | // global data |
234 | // ---------------------------------------------------------------------------- | |
235 | ||
384223b3 VZ |
236 | // in the fine tradition of ANSI C we use our equivalent of (time_t)-1 to |
237 | // indicate an invalid wxDateTime object | |
56d0c5a6 | 238 | const wxDateTime wxDefaultDateTime; |
2ef31e80 VZ |
239 | |
240 | wxDateTime::Country wxDateTime::ms_country = wxDateTime::Country_Unknown; | |
241 | ||
b76b015e VZ |
242 | // ---------------------------------------------------------------------------- |
243 | // private functions | |
244 | // ---------------------------------------------------------------------------- | |
245 | ||
4f6aed9c VZ |
246 | // debugger helper: shows what the date really is |
247 | #ifdef __WXDEBUG__ | |
248 | extern const wxChar *wxDumpDate(const wxDateTime* dt) | |
249 | { | |
0de868d9 | 250 | static wxChar buf[128]; |
4f6aed9c VZ |
251 | |
252 | wxStrcpy(buf, dt->Format(_T("%Y-%m-%d (%a) %H:%M:%S"))); | |
253 | ||
254 | return buf; | |
255 | } | |
256 | #endif // Debug | |
257 | ||
fcc3d7cb VZ |
258 | // get the number of days in the given month of the given year |
259 | static inline | |
260 | wxDateTime::wxDateTime_t GetNumOfDaysInMonth(int year, wxDateTime::Month month) | |
261 | { | |
e6ec579c VZ |
262 | // the number of days in month in Julian/Gregorian calendar: the first line |
263 | // is for normal years, the second one is for the leap ones | |
264 | static wxDateTime::wxDateTime_t daysInMonth[2][MONTHS_IN_YEAR] = | |
265 | { | |
266 | { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }, | |
267 | { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 } | |
268 | }; | |
269 | ||
270 | return daysInMonth[wxDateTime::IsLeapYear(year)][month]; | |
fcc3d7cb VZ |
271 | } |
272 | ||
c5432233 VZ |
273 | // returns the time zone in the C sense, i.e. the difference UTC - local |
274 | // (in seconds) | |
fcc3d7cb VZ |
275 | static int GetTimeZone() |
276 | { | |
51485b76 | 277 | #ifdef WX_GMTOFF_IN_TM |
fcc3d7cb VZ |
278 | // set to TRUE when the timezone is set |
279 | static bool s_timezoneSet = FALSE; | |
0779cc9a | 280 | static long gmtoffset = LONG_MAX; // invalid timezone |
c5432233 | 281 | |
c5432233 | 282 | // ensure that the timezone variable is set by calling localtime |
fcc3d7cb VZ |
283 | if ( !s_timezoneSet ) |
284 | { | |
1ef54dcf | 285 | // just call localtime() instead of figuring out whether this system |
e6ec579c | 286 | // supports tzset(), _tzset() or something else |
c5432233 | 287 | time_t t = 0; |
0779cc9a | 288 | struct tm *tm; |
fcc3d7cb | 289 | |
0779cc9a | 290 | tm = localtime(&t); |
fcc3d7cb | 291 | s_timezoneSet = TRUE; |
c5432233 | 292 | |
c5432233 VZ |
293 | // note that GMT offset is the opposite of time zone and so to return |
294 | // consistent results in both WX_GMTOFF_IN_TM and !WX_GMTOFF_IN_TM | |
295 | // cases we have to negate it | |
296 | gmtoffset = -tm->tm_gmtoff; | |
fcc3d7cb VZ |
297 | } |
298 | ||
0779cc9a | 299 | return (int)gmtoffset; |
51485b76 | 300 | #else // !WX_GMTOFF_IN_TM |
6de20863 | 301 | return (int)WX_TIMEZONE; |
51485b76 | 302 | #endif // WX_GMTOFF_IN_TM/!WX_GMTOFF_IN_TM |
fcc3d7cb VZ |
303 | } |
304 | ||
e6ec579c | 305 | // return the integral part of the JDN for the midnight of the given date (to |
1ef54dcf VZ |
306 | // get the real JDN you need to add 0.5, this is, in fact, JDN of the |
307 | // noon of the previous day) | |
e6ec579c VZ |
308 | static long GetTruncatedJDN(wxDateTime::wxDateTime_t day, |
309 | wxDateTime::Month mon, | |
310 | int year) | |
311 | { | |
1ef54dcf VZ |
312 | // CREDIT: code below is by Scott E. Lee (but bugs are mine) |
313 | ||
314 | // check the date validity | |
315 | wxASSERT_MSG( | |
316 | (year > JDN_0_YEAR) || | |
317 | ((year == JDN_0_YEAR) && (mon > JDN_0_MONTH)) || | |
318 | ((year == JDN_0_YEAR) && (mon == JDN_0_MONTH) && (day >= JDN_0_DAY)), | |
319 | _T("date out of range - can't convert to JDN") | |
320 | ); | |
321 | ||
322 | // make the year positive to avoid problems with negative numbers division | |
323 | year += 4800; | |
324 | ||
325 | // months are counted from March here | |
326 | int month; | |
327 | if ( mon >= wxDateTime::Mar ) | |
e6ec579c | 328 | { |
1ef54dcf | 329 | month = mon - 2; |
e6ec579c | 330 | } |
1ef54dcf | 331 | else |
e6ec579c | 332 | { |
1ef54dcf VZ |
333 | month = mon + 10; |
334 | year--; | |
335 | } | |
e6ec579c | 336 | |
1ef54dcf VZ |
337 | // now we can simply add all the contributions together |
338 | return ((year / 100) * DAYS_PER_400_YEARS) / 4 | |
339 | + ((year % 100) * DAYS_PER_4_YEARS) / 4 | |
340 | + (month * DAYS_PER_5_MONTHS + 2) / 5 | |
341 | + day | |
342 | - JDN_OFFSET; | |
e6ec579c VZ |
343 | } |
344 | ||
2423ef22 | 345 | // this function is a wrapper around strftime(3) adding error checking |
b76b015e VZ |
346 | static wxString CallStrftime(const wxChar *format, const tm* tm) |
347 | { | |
68ee7c47 | 348 | wxChar buf[4096]; |
b76b015e VZ |
349 | if ( !wxStrftime(buf, WXSIZEOF(buf), format, tm) ) |
350 | { | |
68ee7c47 | 351 | // buffer is too small? |
b76b015e VZ |
352 | wxFAIL_MSG(_T("strftime() failed")); |
353 | } | |
354 | ||
355 | return wxString(buf); | |
356 | } | |
357 | ||
2423ef22 VZ |
358 | #ifdef HAVE_STRPTIME |
359 | ||
e2620fda VZ |
360 | // glibc2 doesn't define this in the headers unless _XOPEN_SOURCE is defined |
361 | // which, unfortunately, wreaks havoc elsewhere | |
362 | #if defined(__GLIBC__) && (__GLIBC__ == 2) | |
363 | extern "C" char *strptime(const char *, const char *, struct tm *); | |
364 | #endif | |
365 | ||
2423ef22 VZ |
366 | // Unicode-friendly strptime() wrapper |
367 | static const wxChar * | |
368 | CallStrptime(const wxChar *input, const char *fmt, tm *tm) | |
369 | { | |
370 | // the problem here is that strptime() returns pointer into the string we | |
371 | // passed to it while we're really interested in the pointer into the | |
372 | // original, Unicode, string so we try to transform the pointer back | |
373 | #if wxUSE_UNICODE | |
374 | wxCharBuffer inputMB(wxConvertWX2MB(input)); | |
375 | #else // ASCII | |
376 | const char * const inputMB = input; | |
377 | #endif // Unicode/Ascii | |
378 | ||
379 | const char *result = strptime(inputMB, fmt, tm); | |
380 | if ( !result ) | |
381 | return NULL; | |
382 | ||
383 | #if wxUSE_UNICODE | |
384 | // FIXME: this is wrong in presence of surrogates &c | |
385 | return input + (result - inputMB.data()); | |
386 | #else // ASCII | |
387 | return result; | |
388 | #endif // Unicode/Ascii | |
389 | } | |
390 | ||
391 | #endif // HAVE_STRPTIME | |
392 | ||
2f02cb89 VZ |
393 | // if year and/or month have invalid values, replace them with the current ones |
394 | static void ReplaceDefaultYearMonthWithCurrent(int *year, | |
395 | wxDateTime::Month *month) | |
396 | { | |
397 | struct tm *tmNow = NULL; | |
398 | ||
399 | if ( *year == wxDateTime::Inv_Year ) | |
400 | { | |
401 | tmNow = wxDateTime::GetTmNow(); | |
402 | ||
403 | *year = 1900 + tmNow->tm_year; | |
404 | } | |
405 | ||
406 | if ( *month == wxDateTime::Inv_Month ) | |
407 | { | |
408 | if ( !tmNow ) | |
409 | tmNow = wxDateTime::GetTmNow(); | |
410 | ||
411 | *month = (wxDateTime::Month)tmNow->tm_mon; | |
412 | } | |
413 | } | |
414 | ||
f0f951fa VZ |
415 | // fll the struct tm with default values |
416 | static void InitTm(struct tm& tm) | |
417 | { | |
418 | // struct tm may have etxra fields (undocumented and with unportable | |
419 | // names) which, nevertheless, must be set to 0 | |
420 | memset(&tm, 0, sizeof(struct tm)); | |
421 | ||
422 | tm.tm_mday = 1; // mday 0 is invalid | |
423 | tm.tm_year = 76; // any valid year | |
424 | tm.tm_isdst = -1; // auto determine | |
425 | } | |
426 | ||
cd0b1709 VZ |
427 | // parsing helpers |
428 | // --------------- | |
429 | ||
430 | // return the month if the string is a month name or Inv_Month otherwise | |
f0f951fa | 431 | static wxDateTime::Month GetMonthFromName(const wxString& name, int flags) |
cd0b1709 VZ |
432 | { |
433 | wxDateTime::Month mon; | |
434 | for ( mon = wxDateTime::Jan; mon < wxDateTime::Inv_Month; wxNextMonth(mon) ) | |
435 | { | |
f0f951fa VZ |
436 | // case-insensitive comparison either one of or with both abbreviated |
437 | // and not versions | |
438 | if ( flags & wxDateTime::Name_Full ) | |
cd0b1709 | 439 | { |
f0f951fa VZ |
440 | if ( name.CmpNoCase(wxDateTime:: |
441 | GetMonthName(mon, wxDateTime::Name_Full)) == 0 ) | |
442 | { | |
443 | break; | |
444 | } | |
445 | } | |
446 | ||
447 | if ( flags & wxDateTime::Name_Abbr ) | |
448 | { | |
449 | if ( name.CmpNoCase(wxDateTime:: | |
450 | GetMonthName(mon, wxDateTime::Name_Abbr)) == 0 ) | |
451 | { | |
452 | break; | |
453 | } | |
cd0b1709 VZ |
454 | } |
455 | } | |
456 | ||
457 | return mon; | |
458 | } | |
459 | ||
460 | // return the weekday if the string is a weekday name or Inv_WeekDay otherwise | |
f0f951fa | 461 | static wxDateTime::WeekDay GetWeekDayFromName(const wxString& name, int flags) |
cd0b1709 VZ |
462 | { |
463 | wxDateTime::WeekDay wd; | |
464 | for ( wd = wxDateTime::Sun; wd < wxDateTime::Inv_WeekDay; wxNextWDay(wd) ) | |
465 | { | |
f0f951fa VZ |
466 | // case-insensitive comparison either one of or with both abbreviated |
467 | // and not versions | |
468 | if ( flags & wxDateTime::Name_Full ) | |
cd0b1709 | 469 | { |
f0f951fa VZ |
470 | if ( name.CmpNoCase(wxDateTime:: |
471 | GetWeekDayName(wd, wxDateTime::Name_Full)) == 0 ) | |
472 | { | |
473 | break; | |
474 | } | |
475 | } | |
476 | ||
477 | if ( flags & wxDateTime::Name_Abbr ) | |
478 | { | |
479 | if ( name.CmpNoCase(wxDateTime:: | |
480 | GetWeekDayName(wd, wxDateTime::Name_Abbr)) == 0 ) | |
481 | { | |
482 | break; | |
483 | } | |
cd0b1709 VZ |
484 | } |
485 | } | |
486 | ||
487 | return wd; | |
488 | } | |
489 | ||
f6bcfd97 BP |
490 | // scans all digits (but no more than len) and returns the resulting number |
491 | static bool GetNumericToken(size_t len, const wxChar*& p, unsigned long *number) | |
f0f951fa | 492 | { |
f6bcfd97 | 493 | size_t n = 1; |
f0f951fa VZ |
494 | wxString s; |
495 | while ( wxIsdigit(*p) ) | |
496 | { | |
497 | s += *p++; | |
f6bcfd97 BP |
498 | |
499 | if ( len && ++n > len ) | |
500 | break; | |
f0f951fa VZ |
501 | } |
502 | ||
fde5a86b | 503 | return !!s && s.ToULong(number); |
f0f951fa VZ |
504 | } |
505 | ||
506 | // scans all alphabetic characters and returns the resulting string | |
507 | static wxString GetAlphaToken(const wxChar*& p) | |
508 | { | |
509 | wxString s; | |
510 | while ( wxIsalpha(*p) ) | |
511 | { | |
512 | s += *p++; | |
513 | } | |
514 | ||
515 | return s; | |
516 | } | |
517 | ||
0979c962 VZ |
518 | // ============================================================================ |
519 | // implementation of wxDateTime | |
520 | // ============================================================================ | |
521 | ||
b76b015e VZ |
522 | // ---------------------------------------------------------------------------- |
523 | // struct Tm | |
524 | // ---------------------------------------------------------------------------- | |
525 | ||
526 | wxDateTime::Tm::Tm() | |
527 | { | |
528 | year = (wxDateTime_t)wxDateTime::Inv_Year; | |
529 | mon = wxDateTime::Inv_Month; | |
530 | mday = 0; | |
e6ec579c | 531 | hour = min = sec = msec = 0; |
b76b015e VZ |
532 | wday = wxDateTime::Inv_WeekDay; |
533 | } | |
534 | ||
299fcbfe VZ |
535 | wxDateTime::Tm::Tm(const struct tm& tm, const TimeZone& tz) |
536 | : m_tz(tz) | |
b76b015e | 537 | { |
e6ec579c | 538 | msec = 0; |
b76b015e VZ |
539 | sec = tm.tm_sec; |
540 | min = tm.tm_min; | |
541 | hour = tm.tm_hour; | |
542 | mday = tm.tm_mday; | |
fcc3d7cb | 543 | mon = (wxDateTime::Month)tm.tm_mon; |
b76b015e VZ |
544 | year = 1900 + tm.tm_year; |
545 | wday = tm.tm_wday; | |
546 | yday = tm.tm_yday; | |
547 | } | |
548 | ||
549 | bool wxDateTime::Tm::IsValid() const | |
550 | { | |
551 | // we allow for the leap seconds, although we don't use them (yet) | |
fcc3d7cb | 552 | return (year != wxDateTime::Inv_Year) && (mon != wxDateTime::Inv_Month) && |
c5a1681b | 553 | (mday <= GetNumOfDaysInMonth(year, mon)) && |
e6ec579c | 554 | (hour < 24) && (min < 60) && (sec < 62) && (msec < 1000); |
b76b015e VZ |
555 | } |
556 | ||
557 | void wxDateTime::Tm::ComputeWeekDay() | |
558 | { | |
c5a1681b VZ |
559 | // compute the week day from day/month/year: we use the dumbest algorithm |
560 | // possible: just compute our JDN and then use the (simple to derive) | |
561 | // formula: weekday = (JDN + 1.5) % 7 | |
562 | wday = (wxDateTime::WeekDay)(GetTruncatedJDN(mday, mon, year) + 2) % 7; | |
b76b015e VZ |
563 | } |
564 | ||
e6ec579c | 565 | void wxDateTime::Tm::AddMonths(int monDiff) |
fcc3d7cb VZ |
566 | { |
567 | // normalize the months field | |
568 | while ( monDiff < -mon ) | |
569 | { | |
570 | year--; | |
571 | ||
572 | monDiff += MONTHS_IN_YEAR; | |
573 | } | |
574 | ||
2ef31e80 | 575 | while ( monDiff + mon >= MONTHS_IN_YEAR ) |
fcc3d7cb VZ |
576 | { |
577 | year++; | |
239446b4 VZ |
578 | |
579 | monDiff -= MONTHS_IN_YEAR; | |
fcc3d7cb VZ |
580 | } |
581 | ||
582 | mon = (wxDateTime::Month)(mon + monDiff); | |
583 | ||
e6ec579c | 584 | wxASSERT_MSG( mon >= 0 && mon < MONTHS_IN_YEAR, _T("logic error") ); |
4f6aed9c VZ |
585 | |
586 | // NB: we don't check here that the resulting date is valid, this function | |
587 | // is private and the caller must check it if needed | |
fcc3d7cb VZ |
588 | } |
589 | ||
e6ec579c | 590 | void wxDateTime::Tm::AddDays(int dayDiff) |
fcc3d7cb VZ |
591 | { |
592 | // normalize the days field | |
9d9b7755 | 593 | while ( dayDiff + mday < 1 ) |
fcc3d7cb VZ |
594 | { |
595 | AddMonths(-1); | |
596 | ||
9d9b7755 | 597 | dayDiff += GetNumOfDaysInMonth(year, mon); |
fcc3d7cb VZ |
598 | } |
599 | ||
9d9b7755 | 600 | mday += dayDiff; |
fcc3d7cb VZ |
601 | while ( mday > GetNumOfDaysInMonth(year, mon) ) |
602 | { | |
603 | mday -= GetNumOfDaysInMonth(year, mon); | |
604 | ||
605 | AddMonths(1); | |
606 | } | |
607 | ||
608 | wxASSERT_MSG( mday > 0 && mday <= GetNumOfDaysInMonth(year, mon), | |
609 | _T("logic error") ); | |
610 | } | |
611 | ||
612 | // ---------------------------------------------------------------------------- | |
613 | // class TimeZone | |
614 | // ---------------------------------------------------------------------------- | |
615 | ||
616 | wxDateTime::TimeZone::TimeZone(wxDateTime::TZ tz) | |
617 | { | |
618 | switch ( tz ) | |
619 | { | |
620 | case wxDateTime::Local: | |
299fcbfe VZ |
621 | // get the offset from C RTL: it returns the difference GMT-local |
622 | // while we want to have the offset _from_ GMT, hence the '-' | |
623 | m_offset = -GetTimeZone(); | |
fcc3d7cb VZ |
624 | break; |
625 | ||
626 | case wxDateTime::GMT_12: | |
627 | case wxDateTime::GMT_11: | |
628 | case wxDateTime::GMT_10: | |
629 | case wxDateTime::GMT_9: | |
630 | case wxDateTime::GMT_8: | |
631 | case wxDateTime::GMT_7: | |
632 | case wxDateTime::GMT_6: | |
633 | case wxDateTime::GMT_5: | |
634 | case wxDateTime::GMT_4: | |
635 | case wxDateTime::GMT_3: | |
636 | case wxDateTime::GMT_2: | |
637 | case wxDateTime::GMT_1: | |
299fcbfe | 638 | m_offset = -3600*(wxDateTime::GMT0 - tz); |
fcc3d7cb VZ |
639 | break; |
640 | ||
641 | case wxDateTime::GMT0: | |
642 | case wxDateTime::GMT1: | |
643 | case wxDateTime::GMT2: | |
644 | case wxDateTime::GMT3: | |
645 | case wxDateTime::GMT4: | |
646 | case wxDateTime::GMT5: | |
647 | case wxDateTime::GMT6: | |
648 | case wxDateTime::GMT7: | |
649 | case wxDateTime::GMT8: | |
650 | case wxDateTime::GMT9: | |
651 | case wxDateTime::GMT10: | |
652 | case wxDateTime::GMT11: | |
653 | case wxDateTime::GMT12: | |
299fcbfe | 654 | m_offset = 3600*(tz - wxDateTime::GMT0); |
fcc3d7cb VZ |
655 | break; |
656 | ||
657 | case wxDateTime::A_CST: | |
658 | // Central Standard Time in use in Australia = UTC + 9.5 | |
cd0b1709 | 659 | m_offset = 60l*(9*60 + 30); |
fcc3d7cb VZ |
660 | break; |
661 | ||
662 | default: | |
663 | wxFAIL_MSG( _T("unknown time zone") ); | |
664 | } | |
665 | } | |
666 | ||
b76b015e VZ |
667 | // ---------------------------------------------------------------------------- |
668 | // static functions | |
669 | // ---------------------------------------------------------------------------- | |
670 | ||
671 | /* static */ | |
672 | bool wxDateTime::IsLeapYear(int year, wxDateTime::Calendar cal) | |
673 | { | |
2f02cb89 VZ |
674 | if ( year == Inv_Year ) |
675 | year = GetCurrentYear(); | |
676 | ||
b76b015e VZ |
677 | if ( cal == Gregorian ) |
678 | { | |
679 | // in Gregorian calendar leap years are those divisible by 4 except | |
680 | // those divisible by 100 unless they're also divisible by 400 | |
681 | // (in some countries, like Russia and Greece, additional corrections | |
682 | // exist, but they won't manifest themselves until 2700) | |
683 | return (year % 4 == 0) && ((year % 100 != 0) || (year % 400 == 0)); | |
684 | } | |
685 | else if ( cal == Julian ) | |
686 | { | |
687 | // in Julian calendar the rule is simpler | |
688 | return year % 4 == 0; | |
689 | } | |
690 | else | |
691 | { | |
692 | wxFAIL_MSG(_T("unknown calendar")); | |
693 | ||
694 | return FALSE; | |
695 | } | |
696 | } | |
697 | ||
fcc3d7cb VZ |
698 | /* static */ |
699 | int wxDateTime::GetCentury(int year) | |
700 | { | |
701 | return year > 0 ? year / 100 : year / 100 - 1; | |
702 | } | |
703 | ||
b76b015e VZ |
704 | /* static */ |
705 | int wxDateTime::ConvertYearToBC(int year) | |
706 | { | |
707 | // year 0 is BC 1 | |
708 | return year > 0 ? year : year - 1; | |
709 | } | |
710 | ||
711 | /* static */ | |
712 | int wxDateTime::GetCurrentYear(wxDateTime::Calendar cal) | |
713 | { | |
714 | switch ( cal ) | |
715 | { | |
716 | case Gregorian: | |
717 | return Now().GetYear(); | |
718 | ||
719 | case Julian: | |
720 | wxFAIL_MSG(_T("TODO")); | |
721 | break; | |
722 | ||
723 | default: | |
724 | wxFAIL_MSG(_T("unsupported calendar")); | |
725 | break; | |
726 | } | |
727 | ||
728 | return Inv_Year; | |
729 | } | |
730 | ||
731 | /* static */ | |
732 | wxDateTime::Month wxDateTime::GetCurrentMonth(wxDateTime::Calendar cal) | |
733 | { | |
734 | switch ( cal ) | |
735 | { | |
736 | case Gregorian: | |
737 | return Now().GetMonth(); | |
b76b015e VZ |
738 | |
739 | case Julian: | |
740 | wxFAIL_MSG(_T("TODO")); | |
741 | break; | |
742 | ||
743 | default: | |
744 | wxFAIL_MSG(_T("unsupported calendar")); | |
745 | break; | |
746 | } | |
747 | ||
748 | return Inv_Month; | |
749 | } | |
750 | ||
2f02cb89 VZ |
751 | /* static */ |
752 | wxDateTime::wxDateTime_t wxDateTime::GetNumberOfDays(int year, Calendar cal) | |
753 | { | |
754 | if ( year == Inv_Year ) | |
755 | { | |
756 | // take the current year if none given | |
757 | year = GetCurrentYear(); | |
758 | } | |
759 | ||
760 | switch ( cal ) | |
761 | { | |
762 | case Gregorian: | |
763 | case Julian: | |
764 | return IsLeapYear(year) ? 366 : 365; | |
2f02cb89 VZ |
765 | |
766 | default: | |
767 | wxFAIL_MSG(_T("unsupported calendar")); | |
768 | break; | |
769 | } | |
770 | ||
771 | return 0; | |
772 | } | |
773 | ||
b76b015e VZ |
774 | /* static */ |
775 | wxDateTime::wxDateTime_t wxDateTime::GetNumberOfDays(wxDateTime::Month month, | |
776 | int year, | |
777 | wxDateTime::Calendar cal) | |
778 | { | |
fcc3d7cb | 779 | wxCHECK_MSG( month < MONTHS_IN_YEAR, 0, _T("invalid month") ); |
b76b015e VZ |
780 | |
781 | if ( cal == Gregorian || cal == Julian ) | |
782 | { | |
783 | if ( year == Inv_Year ) | |
784 | { | |
785 | // take the current year if none given | |
786 | year = GetCurrentYear(); | |
787 | } | |
788 | ||
fcc3d7cb | 789 | return GetNumOfDaysInMonth(year, month); |
b76b015e VZ |
790 | } |
791 | else | |
792 | { | |
793 | wxFAIL_MSG(_T("unsupported calendar")); | |
794 | ||
795 | return 0; | |
796 | } | |
797 | } | |
798 | ||
799 | /* static */ | |
f0f951fa VZ |
800 | wxString wxDateTime::GetMonthName(wxDateTime::Month month, |
801 | wxDateTime::NameFlags flags) | |
b76b015e VZ |
802 | { |
803 | wxCHECK_MSG( month != Inv_Month, _T(""), _T("invalid month") ); | |
804 | ||
68ee7c47 VZ |
805 | // notice that we must set all the fields to avoid confusing libc (GNU one |
806 | // gets confused to a crash if we don't do this) | |
cd0b1709 | 807 | tm tm; |
f0f951fa | 808 | InitTm(tm); |
cd0b1709 | 809 | tm.tm_mon = month; |
b76b015e | 810 | |
f0f951fa | 811 | return CallStrftime(flags == Name_Abbr ? _T("%b") : _T("%B"), &tm); |
b76b015e VZ |
812 | } |
813 | ||
814 | /* static */ | |
f0f951fa VZ |
815 | wxString wxDateTime::GetWeekDayName(wxDateTime::WeekDay wday, |
816 | wxDateTime::NameFlags flags) | |
b76b015e VZ |
817 | { |
818 | wxCHECK_MSG( wday != Inv_WeekDay, _T(""), _T("invalid weekday") ); | |
819 | ||
820 | // take some arbitrary Sunday | |
f0f951fa VZ |
821 | tm tm; |
822 | InitTm(tm); | |
823 | tm.tm_mday = 28; | |
824 | tm.tm_mon = Nov; | |
825 | tm.tm_year = 99; | |
b76b015e | 826 | |
1ef54dcf | 827 | // and offset it by the number of days needed to get the correct wday |
b76b015e VZ |
828 | tm.tm_mday += wday; |
829 | ||
c5a1681b VZ |
830 | // call mktime() to normalize it... |
831 | (void)mktime(&tm); | |
832 | ||
833 | // ... and call strftime() | |
f0f951fa VZ |
834 | return CallStrftime(flags == Name_Abbr ? _T("%a") : _T("%A"), &tm); |
835 | } | |
836 | ||
837 | /* static */ | |
838 | void wxDateTime::GetAmPmStrings(wxString *am, wxString *pm) | |
839 | { | |
840 | tm tm; | |
841 | InitTm(tm); | |
653567bb | 842 | wxChar buffer[64]; |
0308fd61 JS |
843 | // @Note: Do not call 'CallStrftime' here! CallStrftime checks the return code |
844 | // and causes an assertion failed if the buffer is to small (which is good) - OR - | |
845 | // if strftime does not return anything because the format string is invalid - OR - | |
846 | // if there are no 'am' / 'pm' tokens defined for the current locale (which is not good). | |
847 | // wxDateTime::ParseTime will try several different formats to parse the time. | |
848 | // As a result, GetAmPmStrings might get called, even if the current locale | |
849 | // does not define any 'am' / 'pm' tokens. In this case, wxStrftime would | |
850 | // assert, even though it is a perfectly legal use. | |
f0f951fa VZ |
851 | if ( am ) |
852 | { | |
0308fd61 JS |
853 | if (wxStrftime(buffer, sizeof buffer, _T("%p"), &tm) > 0) |
854 | *am = wxString(buffer); | |
855 | else | |
856 | *am = wxString(); | |
f0f951fa VZ |
857 | } |
858 | if ( pm ) | |
859 | { | |
860 | tm.tm_hour = 13; | |
0308fd61 JS |
861 | if (wxStrftime(buffer, sizeof buffer, _T("%p"), &tm) > 0) |
862 | *pm = wxString(buffer); | |
863 | else | |
864 | *pm = wxString(); | |
f0f951fa | 865 | } |
b76b015e VZ |
866 | } |
867 | ||
239446b4 VZ |
868 | // ---------------------------------------------------------------------------- |
869 | // Country stuff: date calculations depend on the country (DST, work days, | |
870 | // ...), so we need to know which rules to follow. | |
871 | // ---------------------------------------------------------------------------- | |
872 | ||
873 | /* static */ | |
874 | wxDateTime::Country wxDateTime::GetCountry() | |
875 | { | |
f0f951fa VZ |
876 | // TODO use LOCALE_ICOUNTRY setting under Win32 |
877 | ||
239446b4 VZ |
878 | if ( ms_country == Country_Unknown ) |
879 | { | |
880 | // try to guess from the time zone name | |
881 | time_t t = time(NULL); | |
882 | struct tm *tm = localtime(&t); | |
883 | ||
884 | wxString tz = CallStrftime(_T("%Z"), tm); | |
885 | if ( tz == _T("WET") || tz == _T("WEST") ) | |
886 | { | |
887 | ms_country = UK; | |
888 | } | |
889 | else if ( tz == _T("CET") || tz == _T("CEST") ) | |
890 | { | |
891 | ms_country = Country_EEC; | |
892 | } | |
893 | else if ( tz == _T("MSK") || tz == _T("MSD") ) | |
894 | { | |
895 | ms_country = Russia; | |
896 | } | |
897 | else if ( tz == _T("AST") || tz == _T("ADT") || | |
898 | tz == _T("EST") || tz == _T("EDT") || | |
899 | tz == _T("CST") || tz == _T("CDT") || | |
900 | tz == _T("MST") || tz == _T("MDT") || | |
901 | tz == _T("PST") || tz == _T("PDT") ) | |
902 | { | |
903 | ms_country = USA; | |
904 | } | |
905 | else | |
906 | { | |
907 | // well, choose a default one | |
908 | ms_country = USA; | |
909 | } | |
910 | } | |
911 | ||
912 | return ms_country; | |
913 | } | |
914 | ||
915 | /* static */ | |
916 | void wxDateTime::SetCountry(wxDateTime::Country country) | |
917 | { | |
918 | ms_country = country; | |
919 | } | |
920 | ||
921 | /* static */ | |
922 | bool wxDateTime::IsWestEuropeanCountry(Country country) | |
923 | { | |
924 | if ( country == Country_Default ) | |
925 | { | |
926 | country = GetCountry(); | |
927 | } | |
928 | ||
929 | return (Country_WesternEurope_Start <= country) && | |
930 | (country <= Country_WesternEurope_End); | |
931 | } | |
932 | ||
933 | // ---------------------------------------------------------------------------- | |
934 | // DST calculations: we use 3 different rules for the West European countries, | |
935 | // USA and for the rest of the world. This is undoubtedly false for many | |
936 | // countries, but I lack the necessary info (and the time to gather it), | |
937 | // please add the other rules here! | |
938 | // ---------------------------------------------------------------------------- | |
939 | ||
940 | /* static */ | |
941 | bool wxDateTime::IsDSTApplicable(int year, Country country) | |
942 | { | |
943 | if ( year == Inv_Year ) | |
944 | { | |
945 | // take the current year if none given | |
946 | year = GetCurrentYear(); | |
947 | } | |
948 | ||
949 | if ( country == Country_Default ) | |
950 | { | |
951 | country = GetCountry(); | |
952 | } | |
953 | ||
954 | switch ( country ) | |
955 | { | |
956 | case USA: | |
957 | case UK: | |
958 | // DST was first observed in the US and UK during WWI, reused | |
959 | // during WWII and used again since 1966 | |
960 | return year >= 1966 || | |
961 | (year >= 1942 && year <= 1945) || | |
962 | (year == 1918 || year == 1919); | |
963 | ||
964 | default: | |
965 | // assume that it started after WWII | |
966 | return year > 1950; | |
967 | } | |
968 | } | |
969 | ||
970 | /* static */ | |
971 | wxDateTime wxDateTime::GetBeginDST(int year, Country country) | |
972 | { | |
973 | if ( year == Inv_Year ) | |
974 | { | |
975 | // take the current year if none given | |
976 | year = GetCurrentYear(); | |
977 | } | |
978 | ||
979 | if ( country == Country_Default ) | |
980 | { | |
981 | country = GetCountry(); | |
982 | } | |
983 | ||
984 | if ( !IsDSTApplicable(year, country) ) | |
985 | { | |
2ef31e80 | 986 | return wxInvalidDateTime; |
239446b4 VZ |
987 | } |
988 | ||
989 | wxDateTime dt; | |
990 | ||
991 | if ( IsWestEuropeanCountry(country) || (country == Russia) ) | |
992 | { | |
993 | // DST begins at 1 a.m. GMT on the last Sunday of March | |
994 | if ( !dt.SetToLastWeekDay(Sun, Mar, year) ) | |
995 | { | |
996 | // weird... | |
997 | wxFAIL_MSG( _T("no last Sunday in March?") ); | |
998 | } | |
999 | ||
1000 | dt += wxTimeSpan::Hours(1); | |
1001 | ||
41acf5c0 VZ |
1002 | // disable DST tests because it could result in an infinite recursion! |
1003 | dt.MakeGMT(TRUE); | |
239446b4 VZ |
1004 | } |
1005 | else switch ( country ) | |
1006 | { | |
1007 | case USA: | |
1008 | switch ( year ) | |
1009 | { | |
1010 | case 1918: | |
1011 | case 1919: | |
1012 | // don't know for sure - assume it was in effect all year | |
1013 | ||
1014 | case 1943: | |
1015 | case 1944: | |
1016 | case 1945: | |
1017 | dt.Set(1, Jan, year); | |
1018 | break; | |
1019 | ||
1020 | case 1942: | |
1021 | // DST was installed Feb 2, 1942 by the Congress | |
1022 | dt.Set(2, Feb, year); | |
1023 | break; | |
1024 | ||
1025 | // Oil embargo changed the DST period in the US | |
1026 | case 1974: | |
1027 | dt.Set(6, Jan, 1974); | |
1028 | break; | |
1029 | ||
1030 | case 1975: | |
1031 | dt.Set(23, Feb, 1975); | |
1032 | break; | |
1033 | ||
1034 | default: | |
1035 | // before 1986, DST begun on the last Sunday of April, but | |
1036 | // in 1986 Reagan changed it to begin at 2 a.m. of the | |
1037 | // first Sunday in April | |
1038 | if ( year < 1986 ) | |
1039 | { | |
1040 | if ( !dt.SetToLastWeekDay(Sun, Apr, year) ) | |
1041 | { | |
1042 | // weird... | |
1043 | wxFAIL_MSG( _T("no first Sunday in April?") ); | |
1044 | } | |
1045 | } | |
1046 | else | |
1047 | { | |
1048 | if ( !dt.SetToWeekDay(Sun, 1, Apr, year) ) | |
1049 | { | |
1050 | // weird... | |
1051 | wxFAIL_MSG( _T("no first Sunday in April?") ); | |
1052 | } | |
1053 | } | |
1054 | ||
1055 | dt += wxTimeSpan::Hours(2); | |
1056 | ||
1057 | // TODO what about timezone?? | |
1058 | } | |
1059 | ||
1060 | break; | |
1061 | ||
1062 | default: | |
1063 | // assume Mar 30 as the start of the DST for the rest of the world | |
1064 | // - totally bogus, of course | |
1065 | dt.Set(30, Mar, year); | |
1066 | } | |
1067 | ||
1068 | return dt; | |
1069 | } | |
1070 | ||
1071 | /* static */ | |
1072 | wxDateTime wxDateTime::GetEndDST(int year, Country country) | |
1073 | { | |
1074 | if ( year == Inv_Year ) | |
1075 | { | |
1076 | // take the current year if none given | |
1077 | year = GetCurrentYear(); | |
1078 | } | |
1079 | ||
1080 | if ( country == Country_Default ) | |
1081 | { | |
1082 | country = GetCountry(); | |
1083 | } | |
1084 | ||
1085 | if ( !IsDSTApplicable(year, country) ) | |
1086 | { | |
2ef31e80 | 1087 | return wxInvalidDateTime; |
239446b4 VZ |
1088 | } |
1089 | ||
1090 | wxDateTime dt; | |
1091 | ||
1092 | if ( IsWestEuropeanCountry(country) || (country == Russia) ) | |
1093 | { | |
5f287370 | 1094 | // DST ends at 1 a.m. GMT on the last Sunday of October |
239446b4 VZ |
1095 | if ( !dt.SetToLastWeekDay(Sun, Oct, year) ) |
1096 | { | |
1097 | // weirder and weirder... | |
1098 | wxFAIL_MSG( _T("no last Sunday in October?") ); | |
1099 | } | |
1100 | ||
1101 | dt += wxTimeSpan::Hours(1); | |
1102 | ||
41acf5c0 VZ |
1103 | // disable DST tests because it could result in an infinite recursion! |
1104 | dt.MakeGMT(TRUE); | |
239446b4 VZ |
1105 | } |
1106 | else switch ( country ) | |
1107 | { | |
1108 | case USA: | |
1109 | switch ( year ) | |
1110 | { | |
1111 | case 1918: | |
1112 | case 1919: | |
1113 | // don't know for sure - assume it was in effect all year | |
1114 | ||
1115 | case 1943: | |
1116 | case 1944: | |
1117 | dt.Set(31, Dec, year); | |
1118 | break; | |
1119 | ||
1120 | case 1945: | |
1121 | // the time was reset after the end of the WWII | |
1122 | dt.Set(30, Sep, year); | |
1123 | break; | |
1124 | ||
1125 | default: | |
5f287370 | 1126 | // DST ends at 2 a.m. on the last Sunday of October |
239446b4 VZ |
1127 | if ( !dt.SetToLastWeekDay(Sun, Oct, year) ) |
1128 | { | |
1129 | // weirder and weirder... | |
1130 | wxFAIL_MSG( _T("no last Sunday in October?") ); | |
1131 | } | |
1132 | ||
1133 | dt += wxTimeSpan::Hours(2); | |
1134 | ||
1135 | // TODO what about timezone?? | |
1136 | } | |
1137 | break; | |
1138 | ||
1139 | default: | |
1140 | // assume October 26th as the end of the DST - totally bogus too | |
1141 | dt.Set(26, Oct, year); | |
1142 | } | |
1143 | ||
1144 | return dt; | |
1145 | } | |
1146 | ||
0979c962 VZ |
1147 | // ---------------------------------------------------------------------------- |
1148 | // constructors and assignment operators | |
1149 | // ---------------------------------------------------------------------------- | |
1150 | ||
f6bcfd97 BP |
1151 | // return the current time with ms precision |
1152 | /* static */ wxDateTime wxDateTime::UNow() | |
1153 | { | |
1154 | return wxDateTime(wxGetLocalTimeMillis()); | |
1155 | } | |
1156 | ||
299fcbfe VZ |
1157 | // the values in the tm structure contain the local time |
1158 | wxDateTime& wxDateTime::Set(const struct tm& tm) | |
0979c962 | 1159 | { |
299fcbfe | 1160 | struct tm tm2(tm); |
b76b015e | 1161 | time_t timet = mktime(&tm2); |
1ef54dcf | 1162 | |
4afd7529 | 1163 | if ( timet == (time_t)-1 ) |
0979c962 | 1164 | { |
4afd7529 VZ |
1165 | // mktime() rather unintuitively fails for Jan 1, 1970 if the hour is |
1166 | // less than timezone - try to make it work for this case | |
1167 | if ( tm2.tm_year == 70 && tm2.tm_mon == 0 && tm2.tm_mday == 1 ) | |
1168 | { | |
1169 | // add timezone to make sure that date is in range | |
1170 | tm2.tm_sec -= GetTimeZone(); | |
1171 | ||
1172 | timet = mktime(&tm2); | |
1173 | if ( timet != (time_t)-1 ) | |
1174 | { | |
1175 | timet += GetTimeZone(); | |
1176 | ||
1177 | return Set(timet); | |
1178 | } | |
1179 | } | |
1180 | ||
1181 | wxFAIL_MSG( _T("mktime() failed") ); | |
0979c962 | 1182 | |
384223b3 VZ |
1183 | *this = wxInvalidDateTime; |
1184 | ||
1185 | return *this; | |
0979c962 VZ |
1186 | } |
1187 | else | |
1188 | { | |
1189 | return Set(timet); | |
1190 | } | |
1191 | } | |
1192 | ||
1193 | wxDateTime& wxDateTime::Set(wxDateTime_t hour, | |
1194 | wxDateTime_t minute, | |
1195 | wxDateTime_t second, | |
1196 | wxDateTime_t millisec) | |
1197 | { | |
1198 | // we allow seconds to be 61 to account for the leap seconds, even if we | |
1199 | // don't use them really | |
384223b3 VZ |
1200 | wxDATETIME_CHECK( hour < 24 && |
1201 | second < 62 && | |
1202 | minute < 60 && | |
1203 | millisec < 1000, | |
1204 | _T("Invalid time in wxDateTime::Set()") ); | |
0979c962 VZ |
1205 | |
1206 | // get the current date from system | |
9d9b7755 | 1207 | struct tm *tm = GetTmNow(); |
299fcbfe | 1208 | |
384223b3 | 1209 | wxDATETIME_CHECK( tm, _T("localtime() failed") ); |
0979c962 VZ |
1210 | |
1211 | // adjust the time | |
1212 | tm->tm_hour = hour; | |
1213 | tm->tm_min = minute; | |
1214 | tm->tm_sec = second; | |
1215 | ||
b76b015e | 1216 | (void)Set(*tm); |
0979c962 VZ |
1217 | |
1218 | // and finally adjust milliseconds | |
1219 | return SetMillisecond(millisec); | |
1220 | } | |
1221 | ||
1222 | wxDateTime& wxDateTime::Set(wxDateTime_t day, | |
1223 | Month month, | |
1224 | int year, | |
1225 | wxDateTime_t hour, | |
1226 | wxDateTime_t minute, | |
1227 | wxDateTime_t second, | |
1228 | wxDateTime_t millisec) | |
1229 | { | |
384223b3 VZ |
1230 | wxDATETIME_CHECK( hour < 24 && |
1231 | second < 62 && | |
1232 | minute < 60 && | |
1233 | millisec < 1000, | |
1234 | _T("Invalid time in wxDateTime::Set()") ); | |
0979c962 | 1235 | |
2f02cb89 | 1236 | ReplaceDefaultYearMonthWithCurrent(&year, &month); |
0979c962 | 1237 | |
384223b3 VZ |
1238 | wxDATETIME_CHECK( (0 < day) && (day <= GetNumberOfDays(month, year)), |
1239 | _T("Invalid date in wxDateTime::Set()") ); | |
0979c962 VZ |
1240 | |
1241 | // the range of time_t type (inclusive) | |
1242 | static const int yearMinInRange = 1970; | |
1243 | static const int yearMaxInRange = 2037; | |
1244 | ||
1245 | // test only the year instead of testing for the exact end of the Unix | |
1246 | // time_t range - it doesn't bring anything to do more precise checks | |
2f02cb89 | 1247 | if ( year >= yearMinInRange && year <= yearMaxInRange ) |
0979c962 VZ |
1248 | { |
1249 | // use the standard library version if the date is in range - this is | |
b76b015e | 1250 | // probably more efficient than our code |
0979c962 | 1251 | struct tm tm; |
b76b015e | 1252 | tm.tm_year = year - 1900; |
0979c962 VZ |
1253 | tm.tm_mon = month; |
1254 | tm.tm_mday = day; | |
1255 | tm.tm_hour = hour; | |
1256 | tm.tm_min = minute; | |
1257 | tm.tm_sec = second; | |
299fcbfe | 1258 | tm.tm_isdst = -1; // mktime() will guess it |
0979c962 VZ |
1259 | |
1260 | (void)Set(tm); | |
1261 | ||
1262 | // and finally adjust milliseconds | |
1263 | return SetMillisecond(millisec); | |
1264 | } | |
1265 | else | |
1266 | { | |
1267 | // do time calculations ourselves: we want to calculate the number of | |
fcc3d7cb | 1268 | // milliseconds between the given date and the epoch |
e6ec579c VZ |
1269 | |
1270 | // get the JDN for the midnight of this day | |
1271 | m_time = GetTruncatedJDN(day, month, year); | |
1272 | m_time -= EPOCH_JDN; | |
1273 | m_time *= SECONDS_PER_DAY * TIME_T_FACTOR; | |
1274 | ||
299fcbfe VZ |
1275 | // JDN corresponds to GMT, we take localtime |
1276 | Add(wxTimeSpan(hour, minute, second + GetTimeZone(), millisec)); | |
b76b015e VZ |
1277 | } |
1278 | ||
1279 | return *this; | |
1280 | } | |
1281 | ||
e6ec579c VZ |
1282 | wxDateTime& wxDateTime::Set(double jdn) |
1283 | { | |
1ef54dcf VZ |
1284 | // so that m_time will be 0 for the midnight of Jan 1, 1970 which is jdn |
1285 | // EPOCH_JDN + 0.5 | |
1286 | jdn -= EPOCH_JDN + 0.5; | |
1287 | ||
cd0b1709 VZ |
1288 | jdn *= MILLISECONDS_PER_DAY; |
1289 | ||
9c2882d9 | 1290 | m_time.Assign(jdn); |
e6ec579c VZ |
1291 | |
1292 | return *this; | |
1293 | } | |
1294 | ||
9d9b7755 VZ |
1295 | wxDateTime& wxDateTime::ResetTime() |
1296 | { | |
1297 | Tm tm = GetTm(); | |
1298 | ||
1299 | if ( tm.hour || tm.min || tm.sec || tm.msec ) | |
1300 | { | |
1301 | tm.msec = | |
1302 | tm.sec = | |
1303 | tm.min = | |
1304 | tm.hour = 0; | |
1305 | ||
1306 | Set(tm); | |
1307 | } | |
1308 | ||
1309 | return *this; | |
1310 | } | |
1311 | ||
2b5f62a0 VZ |
1312 | // ---------------------------------------------------------------------------- |
1313 | // DOS Date and Time Format functions | |
1314 | // ---------------------------------------------------------------------------- | |
1315 | // the dos date and time value is an unsigned 32 bit value in the format: | |
1316 | // YYYYYYYMMMMDDDDDhhhhhmmmmmmsssss | |
1317 | // | |
1318 | // Y = year offset from 1980 (0-127) | |
1319 | // M = month (1-12) | |
1320 | // D = day of month (1-31) | |
1321 | // h = hour (0-23) | |
1322 | // m = minute (0-59) | |
1323 | // s = bisecond (0-29) each bisecond indicates two seconds | |
1324 | // ---------------------------------------------------------------------------- | |
1325 | ||
1326 | wxDateTime& wxDateTime::SetFromDOS(unsigned long ddt) | |
1327 | { | |
1328 | struct tm tm; | |
1329 | ||
1330 | long year = ddt & 0xFE000000; | |
1331 | year >>= 25; | |
1332 | year += 80; | |
1333 | tm.tm_year = year; | |
1334 | ||
1335 | long month = ddt & 0x1E00000; | |
1336 | month >>= 21; | |
1337 | month -= 1; | |
1338 | tm.tm_mon = month; | |
1339 | ||
1340 | long day = ddt & 0x1F0000; | |
1341 | day >>= 16; | |
1342 | tm.tm_mday = day; | |
1343 | ||
1344 | long hour = ddt & 0xF800; | |
1345 | hour >>= 11; | |
1346 | tm.tm_hour = hour; | |
1347 | ||
1348 | long minute = ddt & 0x7E0; | |
1349 | minute >>= 5; | |
1350 | tm.tm_min = minute; | |
1351 | ||
1352 | long second = ddt & 0x1F; | |
1353 | tm.tm_sec = second * 2; | |
1354 | ||
1355 | return Set(mktime(&tm)); | |
1356 | } | |
1357 | ||
1358 | unsigned long wxDateTime::GetAsDOS() const | |
1359 | { | |
1360 | unsigned long ddt; | |
1361 | time_t ticks = GetTicks(); | |
1362 | struct tm *tm = localtime(&ticks); | |
1363 | ||
1364 | long year = tm->tm_year; | |
1365 | year -= 80; | |
1366 | year <<= 25; | |
1367 | ||
1368 | long month = tm->tm_mon; | |
1369 | month += 1; | |
1370 | month <<= 21; | |
1371 | ||
1372 | long day = tm->tm_mday; | |
1373 | day <<= 16; | |
1374 | ||
1375 | long hour = tm->tm_hour; | |
1376 | hour <<= 11; | |
1377 | ||
1378 | long minute = tm->tm_min; | |
1379 | minute <<= 5; | |
1380 | ||
1381 | long second = tm->tm_sec; | |
1382 | second /= 2; | |
1383 | ||
1384 | ddt = year | month | day | hour | minute | second; | |
1385 | return ddt; | |
1386 | } | |
1387 | ||
b76b015e VZ |
1388 | // ---------------------------------------------------------------------------- |
1389 | // time_t <-> broken down time conversions | |
1390 | // ---------------------------------------------------------------------------- | |
1391 | ||
299fcbfe | 1392 | wxDateTime::Tm wxDateTime::GetTm(const TimeZone& tz) const |
b76b015e VZ |
1393 | { |
1394 | wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); | |
1395 | ||
1396 | time_t time = GetTicks(); | |
1397 | if ( time != (time_t)-1 ) | |
1398 | { | |
1399 | // use C RTL functions | |
299fcbfe VZ |
1400 | tm *tm; |
1401 | if ( tz.GetOffset() == -GetTimeZone() ) | |
1402 | { | |
1403 | // we are working with local time | |
1404 | tm = localtime(&time); | |
c5a1681b VZ |
1405 | |
1406 | // should never happen | |
f6bcfd97 | 1407 | wxCHECK_MSG( tm, Tm(), _T("localtime() failed") ); |
299fcbfe VZ |
1408 | } |
1409 | else | |
1410 | { | |
13111b2a | 1411 | time += (time_t)tz.GetOffset(); |
33ac7e6f | 1412 | #if defined(__VMS__) || defined(__WATCOMC__) // time is unsigned so avoid warning |
13111b2a | 1413 | int time2 = (int) time; |
9d9b7755 | 1414 | if ( time2 >= 0 ) |
fb10f04c | 1415 | #else |
9d9b7755 | 1416 | if ( time >= 0 ) |
fb10f04c | 1417 | #endif |
c5a1681b VZ |
1418 | { |
1419 | tm = gmtime(&time); | |
b76b015e | 1420 | |
c5a1681b VZ |
1421 | // should never happen |
1422 | wxCHECK_MSG( tm, Tm(), _T("gmtime() failed") ); | |
1423 | } | |
1424 | else | |
1425 | { | |
1426 | tm = (struct tm *)NULL; | |
1427 | } | |
1428 | } | |
b76b015e | 1429 | |
c5a1681b VZ |
1430 | if ( tm ) |
1431 | { | |
f6bcfd97 BP |
1432 | // adjust the milliseconds |
1433 | Tm tm2(*tm, tz); | |
1434 | long timeOnly = (m_time % MILLISECONDS_PER_DAY).ToLong(); | |
1435 | tm2.msec = (wxDateTime_t)(timeOnly % 1000); | |
1436 | return tm2; | |
c5a1681b VZ |
1437 | } |
1438 | //else: use generic code below | |
b76b015e | 1439 | } |
e6ec579c | 1440 | |
c5a1681b VZ |
1441 | // remember the time and do the calculations with the date only - this |
1442 | // eliminates rounding errors of the floating point arithmetics | |
299fcbfe | 1443 | |
c5a1681b | 1444 | wxLongLong timeMidnight = m_time + tz.GetOffset() * 1000; |
1ef54dcf | 1445 | |
c5a1681b | 1446 | long timeOnly = (timeMidnight % MILLISECONDS_PER_DAY).ToLong(); |
1ef54dcf | 1447 | |
c5a1681b VZ |
1448 | // we want to always have positive time and timeMidnight to be really |
1449 | // the midnight before it | |
1450 | if ( timeOnly < 0 ) | |
1451 | { | |
1452 | timeOnly = MILLISECONDS_PER_DAY + timeOnly; | |
1453 | } | |
e6ec579c | 1454 | |
c5a1681b | 1455 | timeMidnight -= timeOnly; |
1ef54dcf | 1456 | |
c5a1681b VZ |
1457 | // calculate the Gregorian date from JDN for the midnight of our date: |
1458 | // this will yield day, month (in 1..12 range) and year | |
1ef54dcf | 1459 | |
c5a1681b VZ |
1460 | // actually, this is the JDN for the noon of the previous day |
1461 | long jdn = (timeMidnight / MILLISECONDS_PER_DAY).ToLong() + EPOCH_JDN; | |
1ef54dcf | 1462 | |
c5a1681b | 1463 | // CREDIT: code below is by Scott E. Lee (but bugs are mine) |
1ef54dcf | 1464 | |
c5a1681b | 1465 | wxASSERT_MSG( jdn > -2, _T("JDN out of range") ); |
1ef54dcf | 1466 | |
c5a1681b | 1467 | // calculate the century |
479cd5de VZ |
1468 | long temp = (jdn + JDN_OFFSET) * 4 - 1; |
1469 | long century = temp / DAYS_PER_400_YEARS; | |
1ef54dcf | 1470 | |
c5a1681b VZ |
1471 | // then the year and day of year (1 <= dayOfYear <= 366) |
1472 | temp = ((temp % DAYS_PER_400_YEARS) / 4) * 4 + 3; | |
479cd5de VZ |
1473 | long year = (century * 100) + (temp / DAYS_PER_4_YEARS); |
1474 | long dayOfYear = (temp % DAYS_PER_4_YEARS) / 4 + 1; | |
1ef54dcf | 1475 | |
c5a1681b VZ |
1476 | // and finally the month and day of the month |
1477 | temp = dayOfYear * 5 - 3; | |
479cd5de VZ |
1478 | long month = temp / DAYS_PER_5_MONTHS; |
1479 | long day = (temp % DAYS_PER_5_MONTHS) / 5 + 1; | |
c5a1681b VZ |
1480 | |
1481 | // month is counted from March - convert to normal | |
1482 | if ( month < 10 ) | |
1483 | { | |
1484 | month += 3; | |
1485 | } | |
1486 | else | |
1487 | { | |
1488 | year += 1; | |
1489 | month -= 9; | |
1490 | } | |
1ef54dcf | 1491 | |
c5a1681b VZ |
1492 | // year is offset by 4800 |
1493 | year -= 4800; | |
1ef54dcf | 1494 | |
c5a1681b VZ |
1495 | // check that the algorithm gave us something reasonable |
1496 | wxASSERT_MSG( (0 < month) && (month <= 12), _T("invalid month") ); | |
1497 | wxASSERT_MSG( (1 <= day) && (day < 32), _T("invalid day") ); | |
e6ec579c | 1498 | |
c5a1681b VZ |
1499 | // construct Tm from these values |
1500 | Tm tm; | |
1501 | tm.year = (int)year; | |
1502 | tm.mon = (Month)(month - 1); // algorithm yields 1 for January, not 0 | |
1503 | tm.mday = (wxDateTime_t)day; | |
479cd5de | 1504 | tm.msec = (wxDateTime_t)(timeOnly % 1000); |
c5a1681b VZ |
1505 | timeOnly -= tm.msec; |
1506 | timeOnly /= 1000; // now we have time in seconds | |
e6ec579c | 1507 | |
479cd5de | 1508 | tm.sec = (wxDateTime_t)(timeOnly % 60); |
c5a1681b VZ |
1509 | timeOnly -= tm.sec; |
1510 | timeOnly /= 60; // now we have time in minutes | |
e6ec579c | 1511 | |
479cd5de | 1512 | tm.min = (wxDateTime_t)(timeOnly % 60); |
c5a1681b | 1513 | timeOnly -= tm.min; |
e6ec579c | 1514 | |
479cd5de | 1515 | tm.hour = (wxDateTime_t)(timeOnly / 60); |
b76b015e | 1516 | |
c5a1681b | 1517 | return tm; |
b76b015e VZ |
1518 | } |
1519 | ||
1520 | wxDateTime& wxDateTime::SetYear(int year) | |
1521 | { | |
1522 | wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); | |
1523 | ||
1524 | Tm tm(GetTm()); | |
1525 | tm.year = year; | |
1526 | Set(tm); | |
1527 | ||
1528 | return *this; | |
1529 | } | |
1530 | ||
1531 | wxDateTime& wxDateTime::SetMonth(Month month) | |
1532 | { | |
1533 | wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); | |
1534 | ||
1535 | Tm tm(GetTm()); | |
1536 | tm.mon = month; | |
1537 | Set(tm); | |
1538 | ||
1539 | return *this; | |
1540 | } | |
1541 | ||
1542 | wxDateTime& wxDateTime::SetDay(wxDateTime_t mday) | |
1543 | { | |
1544 | wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); | |
1545 | ||
1546 | Tm tm(GetTm()); | |
1547 | tm.mday = mday; | |
1548 | Set(tm); | |
1549 | ||
1550 | return *this; | |
1551 | } | |
1552 | ||
1553 | wxDateTime& wxDateTime::SetHour(wxDateTime_t hour) | |
1554 | { | |
1555 | wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); | |
1556 | ||
1557 | Tm tm(GetTm()); | |
1558 | tm.hour = hour; | |
1559 | Set(tm); | |
1560 | ||
1561 | return *this; | |
1562 | } | |
1563 | ||
1564 | wxDateTime& wxDateTime::SetMinute(wxDateTime_t min) | |
1565 | { | |
1566 | wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); | |
1567 | ||
1568 | Tm tm(GetTm()); | |
1569 | tm.min = min; | |
1570 | Set(tm); | |
1571 | ||
1572 | return *this; | |
1573 | } | |
1574 | ||
1575 | wxDateTime& wxDateTime::SetSecond(wxDateTime_t sec) | |
1576 | { | |
1577 | wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); | |
1578 | ||
1579 | Tm tm(GetTm()); | |
1580 | tm.sec = sec; | |
1581 | Set(tm); | |
0979c962 VZ |
1582 | |
1583 | return *this; | |
1584 | } | |
b76b015e VZ |
1585 | |
1586 | wxDateTime& wxDateTime::SetMillisecond(wxDateTime_t millisecond) | |
1587 | { | |
1588 | wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); | |
1589 | ||
1590 | // we don't need to use GetTm() for this one | |
1591 | m_time -= m_time % 1000l; | |
1592 | m_time += millisecond; | |
1593 | ||
1594 | return *this; | |
1595 | } | |
1596 | ||
1597 | // ---------------------------------------------------------------------------- | |
1598 | // wxDateTime arithmetics | |
1599 | // ---------------------------------------------------------------------------- | |
1600 | ||
1601 | wxDateTime& wxDateTime::Add(const wxDateSpan& diff) | |
1602 | { | |
1603 | Tm tm(GetTm()); | |
1604 | ||
1605 | tm.year += diff.GetYears(); | |
fcc3d7cb | 1606 | tm.AddMonths(diff.GetMonths()); |
4f6aed9c VZ |
1607 | |
1608 | // check that the resulting date is valid | |
1609 | if ( tm.mday > GetNumOfDaysInMonth(tm.year, tm.mon) ) | |
1610 | { | |
1611 | // We suppose that when adding one month to Jan 31 we want to get Feb | |
1612 | // 28 (or 29), i.e. adding a month to the last day of the month should | |
1613 | // give the last day of the next month which is quite logical. | |
1614 | // | |
1615 | // Unfortunately, there is no logic way to understand what should | |
1616 | // Jan 30 + 1 month be - Feb 28 too or Feb 27 (assuming non leap year)? | |
1617 | // We make it Feb 28 (last day too), but it is highly questionable. | |
1618 | tm.mday = GetNumOfDaysInMonth(tm.year, tm.mon); | |
1619 | } | |
1620 | ||
fcc3d7cb | 1621 | tm.AddDays(diff.GetTotalDays()); |
b76b015e VZ |
1622 | |
1623 | Set(tm); | |
1624 | ||
9d9b7755 VZ |
1625 | wxASSERT_MSG( IsSameTime(tm), |
1626 | _T("Add(wxDateSpan) shouldn't modify time") ); | |
1627 | ||
b76b015e VZ |
1628 | return *this; |
1629 | } | |
1630 | ||
2f02cb89 VZ |
1631 | // ---------------------------------------------------------------------------- |
1632 | // Weekday and monthday stuff | |
1633 | // ---------------------------------------------------------------------------- | |
1634 | ||
2b5f62a0 VZ |
1635 | bool wxDateTime::SetToTheWeek(wxDateTime_t numWeek, |
1636 | WeekDay weekday, | |
1637 | WeekFlags flags) | |
4f6aed9c | 1638 | { |
2b5f62a0 VZ |
1639 | wxASSERT_MSG( numWeek > 0, |
1640 | _T("invalid week number: weeks are counted from 1") ); | |
1641 | ||
4f6aed9c VZ |
1642 | int year = GetYear(); |
1643 | ||
1644 | // Jan 4 always lies in the 1st week of the year | |
1645 | Set(4, Jan, year); | |
2b5f62a0 | 1646 | SetToWeekDayInSameWeek(weekday, flags) += wxDateSpan::Weeks(numWeek - 1); |
4f6aed9c VZ |
1647 | |
1648 | if ( GetYear() != year ) | |
1649 | { | |
1650 | // oops... numWeek was too big | |
1651 | return FALSE; | |
1652 | } | |
1653 | ||
1654 | return TRUE; | |
1655 | } | |
1656 | ||
2f02cb89 VZ |
1657 | wxDateTime& wxDateTime::SetToLastMonthDay(Month month, |
1658 | int year) | |
1659 | { | |
1660 | // take the current month/year if none specified | |
1a8557b1 VZ |
1661 | if ( year == Inv_Year ) |
1662 | year = GetYear(); | |
1663 | if ( month == Inv_Month ) | |
1664 | month = GetMonth(); | |
2f02cb89 | 1665 | |
fcc3d7cb | 1666 | return Set(GetNumOfDaysInMonth(year, month), month, year); |
2f02cb89 VZ |
1667 | } |
1668 | ||
2b5f62a0 | 1669 | wxDateTime& wxDateTime::SetToWeekDayInSameWeek(WeekDay weekday, WeekFlags flags) |
cd0b1709 | 1670 | { |
384223b3 | 1671 | wxDATETIME_CHECK( weekday != Inv_WeekDay, _T("invalid weekday") ); |
cd0b1709 | 1672 | |
2b5f62a0 | 1673 | int wdayThis = GetWeekDay(); |
cd0b1709 VZ |
1674 | if ( weekday == wdayThis ) |
1675 | { | |
1676 | // nothing to do | |
1677 | return *this; | |
1678 | } | |
2b5f62a0 VZ |
1679 | |
1680 | if ( flags == Default_First ) | |
1681 | { | |
1682 | flags = GetCountry() == USA ? Sunday_First : Monday_First; | |
1683 | } | |
1684 | ||
1685 | // the logic below based on comparing weekday and wdayThis works if Sun (0) | |
1686 | // is the first day in the week, but breaks down for Monday_First case so | |
1687 | // we adjust the week days in this case | |
1688 | if( flags == Monday_First ) | |
1689 | { | |
1690 | if ( wdayThis == Sun ) | |
1691 | wdayThis += 7; | |
1692 | } | |
1693 | //else: Sunday_First, nothing to do | |
1694 | ||
1695 | // go forward or back in time to the day we want | |
1696 | if ( weekday < wdayThis ) | |
cd0b1709 | 1697 | { |
f6bcfd97 | 1698 | return Subtract(wxDateSpan::Days(wdayThis - weekday)); |
cd0b1709 VZ |
1699 | } |
1700 | else // weekday > wdayThis | |
1701 | { | |
4f6aed9c | 1702 | return Add(wxDateSpan::Days(weekday - wdayThis)); |
cd0b1709 VZ |
1703 | } |
1704 | } | |
1705 | ||
1706 | wxDateTime& wxDateTime::SetToNextWeekDay(WeekDay weekday) | |
1707 | { | |
384223b3 | 1708 | wxDATETIME_CHECK( weekday != Inv_WeekDay, _T("invalid weekday") ); |
cd0b1709 VZ |
1709 | |
1710 | int diff; | |
1711 | WeekDay wdayThis = GetWeekDay(); | |
1712 | if ( weekday == wdayThis ) | |
1713 | { | |
1714 | // nothing to do | |
1715 | return *this; | |
1716 | } | |
1717 | else if ( weekday < wdayThis ) | |
1718 | { | |
1719 | // need to advance a week | |
1720 | diff = 7 - (wdayThis - weekday); | |
1721 | } | |
1722 | else // weekday > wdayThis | |
1723 | { | |
1724 | diff = weekday - wdayThis; | |
1725 | } | |
1726 | ||
4f6aed9c | 1727 | return Add(wxDateSpan::Days(diff)); |
cd0b1709 VZ |
1728 | } |
1729 | ||
1730 | wxDateTime& wxDateTime::SetToPrevWeekDay(WeekDay weekday) | |
1731 | { | |
384223b3 | 1732 | wxDATETIME_CHECK( weekday != Inv_WeekDay, _T("invalid weekday") ); |
cd0b1709 VZ |
1733 | |
1734 | int diff; | |
1735 | WeekDay wdayThis = GetWeekDay(); | |
1736 | if ( weekday == wdayThis ) | |
1737 | { | |
1738 | // nothing to do | |
1739 | return *this; | |
1740 | } | |
1741 | else if ( weekday > wdayThis ) | |
1742 | { | |
1743 | // need to go to previous week | |
1744 | diff = 7 - (weekday - wdayThis); | |
1745 | } | |
1746 | else // weekday < wdayThis | |
1747 | { | |
1748 | diff = wdayThis - weekday; | |
1749 | } | |
1750 | ||
f6bcfd97 | 1751 | return Subtract(wxDateSpan::Days(diff)); |
cd0b1709 VZ |
1752 | } |
1753 | ||
2f02cb89 VZ |
1754 | bool wxDateTime::SetToWeekDay(WeekDay weekday, |
1755 | int n, | |
1756 | Month month, | |
1757 | int year) | |
1758 | { | |
1759 | wxCHECK_MSG( weekday != Inv_WeekDay, FALSE, _T("invalid weekday") ); | |
1760 | ||
1761 | // we don't check explicitly that -5 <= n <= 5 because we will return FALSE | |
1762 | // anyhow in such case - but may be should still give an assert for it? | |
1763 | ||
1764 | // take the current month/year if none specified | |
1765 | ReplaceDefaultYearMonthWithCurrent(&year, &month); | |
1766 | ||
1767 | wxDateTime dt; | |
1768 | ||
1769 | // TODO this probably could be optimised somehow... | |
1770 | ||
1771 | if ( n > 0 ) | |
1772 | { | |
1773 | // get the first day of the month | |
1774 | dt.Set(1, month, year); | |
1775 | ||
1776 | // get its wday | |
1777 | WeekDay wdayFirst = dt.GetWeekDay(); | |
1778 | ||
1779 | // go to the first weekday of the month | |
1780 | int diff = weekday - wdayFirst; | |
1781 | if ( diff < 0 ) | |
1782 | diff += 7; | |
1783 | ||
1784 | // add advance n-1 weeks more | |
1785 | diff += 7*(n - 1); | |
1786 | ||
239446b4 | 1787 | dt += wxDateSpan::Days(diff); |
2f02cb89 | 1788 | } |
239446b4 | 1789 | else // count from the end of the month |
2f02cb89 VZ |
1790 | { |
1791 | // get the last day of the month | |
1792 | dt.SetToLastMonthDay(month, year); | |
1793 | ||
1794 | // get its wday | |
1795 | WeekDay wdayLast = dt.GetWeekDay(); | |
1796 | ||
1797 | // go to the last weekday of the month | |
1798 | int diff = wdayLast - weekday; | |
1799 | if ( diff < 0 ) | |
1800 | diff += 7; | |
1801 | ||
1802 | // and rewind n-1 weeks from there | |
239446b4 | 1803 | diff += 7*(-n - 1); |
2f02cb89 VZ |
1804 | |
1805 | dt -= wxDateSpan::Days(diff); | |
1806 | } | |
1807 | ||
1808 | // check that it is still in the same month | |
1809 | if ( dt.GetMonth() == month ) | |
1810 | { | |
1811 | *this = dt; | |
1812 | ||
1813 | return TRUE; | |
1814 | } | |
1815 | else | |
1816 | { | |
1817 | // no such day in this month | |
1818 | return FALSE; | |
1819 | } | |
1820 | } | |
1821 | ||
239446b4 VZ |
1822 | wxDateTime::wxDateTime_t wxDateTime::GetDayOfYear(const TimeZone& tz) const |
1823 | { | |
239446b4 VZ |
1824 | Tm tm(GetTm(tz)); |
1825 | ||
f0f951fa | 1826 | return gs_cumulatedDays[IsLeapYear(tm.year)][tm.mon] + tm.mday; |
239446b4 VZ |
1827 | } |
1828 | ||
9d9b7755 VZ |
1829 | wxDateTime::wxDateTime_t wxDateTime::GetWeekOfYear(wxDateTime::WeekFlags flags, |
1830 | const TimeZone& tz) const | |
239446b4 | 1831 | { |
9d9b7755 VZ |
1832 | if ( flags == Default_First ) |
1833 | { | |
1834 | flags = GetCountry() == USA ? Sunday_First : Monday_First; | |
1835 | } | |
239446b4 VZ |
1836 | |
1837 | wxDateTime_t nDayInYear = GetDayOfYear(tz); | |
9d9b7755 | 1838 | wxDateTime_t week; |
239446b4 | 1839 | |
9d9b7755 VZ |
1840 | WeekDay wd = GetWeekDay(tz); |
1841 | if ( flags == Sunday_First ) | |
1842 | { | |
1843 | week = (nDayInYear - wd + 7) / 7; | |
1844 | } | |
1845 | else | |
1846 | { | |
1847 | // have to shift the week days values | |
1848 | week = (nDayInYear - (wd - 1 + 7) % 7 + 7) / 7; | |
1849 | } | |
239446b4 | 1850 | |
9d9b7755 VZ |
1851 | // FIXME some more elegant way?? |
1852 | WeekDay wdYearStart = wxDateTime(1, Jan, GetYear()).GetWeekDay(); | |
1853 | if ( wdYearStart == Wed || wdYearStart == Thu ) | |
239446b4 VZ |
1854 | { |
1855 | week++; | |
1856 | } | |
1857 | ||
1858 | return week; | |
68ee7c47 VZ |
1859 | } |
1860 | ||
9d9b7755 VZ |
1861 | wxDateTime::wxDateTime_t wxDateTime::GetWeekOfMonth(wxDateTime::WeekFlags flags, |
1862 | const TimeZone& tz) const | |
68ee7c47 | 1863 | { |
9d9b7755 VZ |
1864 | Tm tm = GetTm(tz); |
1865 | wxDateTime dtMonthStart = wxDateTime(1, tm.mon, tm.year); | |
6dc6fda6 | 1866 | int nWeek = GetWeekOfYear(flags) - dtMonthStart.GetWeekOfYear(flags) + 1; |
9d9b7755 | 1867 | if ( nWeek < 0 ) |
68ee7c47 | 1868 | { |
9d9b7755 VZ |
1869 | // this may happen for January when Jan, 1 is the last week of the |
1870 | // previous year | |
1871 | nWeek += IsLeapYear(tm.year - 1) ? 53 : 52; | |
68ee7c47 | 1872 | } |
68ee7c47 | 1873 | |
6dc6fda6 | 1874 | return (wxDateTime::wxDateTime_t)nWeek; |
239446b4 VZ |
1875 | } |
1876 | ||
f0f951fa VZ |
1877 | wxDateTime& wxDateTime::SetToYearDay(wxDateTime::wxDateTime_t yday) |
1878 | { | |
1879 | int year = GetYear(); | |
384223b3 VZ |
1880 | wxDATETIME_CHECK( (0 < yday) && (yday <= GetNumberOfDays(year)), |
1881 | _T("invalid year day") ); | |
f0f951fa VZ |
1882 | |
1883 | bool isLeap = IsLeapYear(year); | |
1884 | for ( Month mon = Jan; mon < Inv_Month; wxNextMonth(mon) ) | |
1885 | { | |
1886 | // for Dec, we can't compare with gs_cumulatedDays[mon + 1], but we | |
1887 | // don't need it neither - because of the CHECK above we know that | |
1888 | // yday lies in December then | |
1889 | if ( (mon == Dec) || (yday < gs_cumulatedDays[isLeap][mon + 1]) ) | |
1890 | { | |
1891 | Set(yday - gs_cumulatedDays[isLeap][mon], mon, year); | |
1892 | ||
1893 | break; | |
1894 | } | |
1895 | } | |
1896 | ||
1897 | return *this; | |
1898 | } | |
1899 | ||
e6ec579c VZ |
1900 | // ---------------------------------------------------------------------------- |
1901 | // Julian day number conversion and related stuff | |
1902 | // ---------------------------------------------------------------------------- | |
1903 | ||
1904 | double wxDateTime::GetJulianDayNumber() const | |
1905 | { | |
299fcbfe VZ |
1906 | // JDN are always expressed for the GMT dates |
1907 | Tm tm(ToTimezone(GMT0).GetTm(GMT0)); | |
e6ec579c VZ |
1908 | |
1909 | double result = GetTruncatedJDN(tm.mday, tm.mon, tm.year); | |
1910 | ||
1911 | // add the part GetTruncatedJDN() neglected | |
1912 | result += 0.5; | |
1913 | ||
1914 | // and now add the time: 86400 sec = 1 JDN | |
1915 | return result + ((double)(60*(60*tm.hour + tm.min) + tm.sec)) / 86400; | |
1916 | } | |
1917 | ||
1918 | double wxDateTime::GetRataDie() const | |
1919 | { | |
1920 | // March 1 of the year 0 is Rata Die day -306 and JDN 1721119.5 | |
1921 | return GetJulianDayNumber() - 1721119.5 - 306; | |
1922 | } | |
1923 | ||
fcc3d7cb | 1924 | // ---------------------------------------------------------------------------- |
299fcbfe | 1925 | // timezone and DST stuff |
fcc3d7cb VZ |
1926 | // ---------------------------------------------------------------------------- |
1927 | ||
299fcbfe | 1928 | int wxDateTime::IsDST(wxDateTime::Country country) const |
fcc3d7cb | 1929 | { |
299fcbfe VZ |
1930 | wxCHECK_MSG( country == Country_Default, -1, |
1931 | _T("country support not implemented") ); | |
1932 | ||
1933 | // use the C RTL for the dates in the standard range | |
1934 | time_t timet = GetTicks(); | |
1935 | if ( timet != (time_t)-1 ) | |
1936 | { | |
1937 | tm *tm = localtime(&timet); | |
1938 | ||
1939 | wxCHECK_MSG( tm, -1, _T("localtime() failed") ); | |
1940 | ||
1941 | return tm->tm_isdst; | |
1942 | } | |
1943 | else | |
1944 | { | |
239446b4 VZ |
1945 | int year = GetYear(); |
1946 | ||
1947 | if ( !IsDSTApplicable(year, country) ) | |
1948 | { | |
1949 | // no DST time in this year in this country | |
1950 | return -1; | |
1951 | } | |
299fcbfe | 1952 | |
239446b4 | 1953 | return IsBetween(GetBeginDST(year, country), GetEndDST(year, country)); |
299fcbfe | 1954 | } |
fcc3d7cb VZ |
1955 | } |
1956 | ||
41acf5c0 | 1957 | wxDateTime& wxDateTime::MakeTimezone(const TimeZone& tz, bool noDST) |
fcc3d7cb | 1958 | { |
479cd5de | 1959 | long secDiff = GetTimeZone() + tz.GetOffset(); |
fcc3d7cb | 1960 | |
41acf5c0 VZ |
1961 | // we need to know whether DST is or not in effect for this date unless |
1962 | // the test disabled by the caller | |
1963 | if ( !noDST && (IsDST() == 1) ) | |
299fcbfe VZ |
1964 | { |
1965 | // FIXME we assume that the DST is always shifted by 1 hour | |
1966 | secDiff -= 3600; | |
1967 | } | |
1968 | ||
f6bcfd97 | 1969 | return Subtract(wxTimeSpan::Seconds(secDiff)); |
fcc3d7cb VZ |
1970 | } |
1971 | ||
b76b015e VZ |
1972 | // ---------------------------------------------------------------------------- |
1973 | // wxDateTime to/from text representations | |
1974 | // ---------------------------------------------------------------------------- | |
1975 | ||
299fcbfe | 1976 | wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const |
b76b015e | 1977 | { |
e6ec579c VZ |
1978 | wxCHECK_MSG( format, _T(""), _T("NULL format in wxDateTime::Format") ); |
1979 | ||
f6bcfd97 BP |
1980 | // we have to use our own implementation if the date is out of range of |
1981 | // strftime() or if we use non standard specificators | |
b76b015e | 1982 | time_t time = GetTicks(); |
f6bcfd97 | 1983 | if ( (time != (time_t)-1) && !wxStrstr(format, _T("%l")) ) |
b76b015e VZ |
1984 | { |
1985 | // use strftime() | |
299fcbfe VZ |
1986 | tm *tm; |
1987 | if ( tz.GetOffset() == -GetTimeZone() ) | |
1988 | { | |
1989 | // we are working with local time | |
1990 | tm = localtime(&time); | |
c5a1681b VZ |
1991 | |
1992 | // should never happen | |
1993 | wxCHECK_MSG( tm, wxEmptyString, _T("localtime() failed") ); | |
299fcbfe VZ |
1994 | } |
1995 | else | |
1996 | { | |
479cd5de | 1997 | time += (int)tz.GetOffset(); |
299fcbfe | 1998 | |
33ac7e6f | 1999 | #if defined(__VMS__) || defined(__WATCOMC__) // time is unsigned so avoid warning |
13111b2a | 2000 | int time2 = (int) time; |
9c2882d9 | 2001 | if ( time2 >= 0 ) |
fb10f04c | 2002 | #else |
9c2882d9 | 2003 | if ( time >= 0 ) |
fb10f04c | 2004 | #endif |
c5a1681b VZ |
2005 | { |
2006 | tm = gmtime(&time); | |
b76b015e | 2007 | |
c5a1681b VZ |
2008 | // should never happen |
2009 | wxCHECK_MSG( tm, wxEmptyString, _T("gmtime() failed") ); | |
2010 | } | |
2011 | else | |
2012 | { | |
2013 | tm = (struct tm *)NULL; | |
2014 | } | |
2015 | } | |
b76b015e | 2016 | |
c5a1681b | 2017 | if ( tm ) |
e6ec579c | 2018 | { |
c5a1681b | 2019 | return CallStrftime(format, tm); |
e6ec579c | 2020 | } |
c5a1681b VZ |
2021 | //else: use generic code below |
2022 | } | |
2023 | ||
68ee7c47 | 2024 | // we only parse ANSI C format specifications here, no POSIX 2 |
f6bcfd97 BP |
2025 | // complications, no GNU extensions but we do add support for a "%l" format |
2026 | // specifier allowing to get the number of milliseconds | |
68ee7c47 | 2027 | Tm tm = GetTm(tz); |
e6ec579c | 2028 | |
68ee7c47 VZ |
2029 | // used for calls to strftime() when we only deal with time |
2030 | struct tm tmTimeOnly; | |
2031 | tmTimeOnly.tm_hour = tm.hour; | |
2032 | tmTimeOnly.tm_min = tm.min; | |
2033 | tmTimeOnly.tm_sec = tm.sec; | |
2034 | tmTimeOnly.tm_wday = 0; | |
2035 | tmTimeOnly.tm_yday = 0; | |
2036 | tmTimeOnly.tm_mday = 1; // any date will do | |
2037 | tmTimeOnly.tm_mon = 0; | |
2038 | tmTimeOnly.tm_year = 76; | |
2039 | tmTimeOnly.tm_isdst = 0; // no DST, we adjust for tz ourselves | |
e6ec579c | 2040 | |
77c3e48a | 2041 | wxString tmp, res, fmt; |
68ee7c47 VZ |
2042 | for ( const wxChar *p = format; *p; p++ ) |
2043 | { | |
2044 | if ( *p != _T('%') ) | |
2045 | { | |
2046 | // copy as is | |
2047 | res += *p; | |
b76b015e | 2048 | |
68ee7c47 VZ |
2049 | continue; |
2050 | } | |
e6ec579c | 2051 | |
77c3e48a | 2052 | // set the default format |
68ee7c47 | 2053 | switch ( *++p ) |
77c3e48a VZ |
2054 | { |
2055 | case _T('Y'): // year has 4 digits | |
2056 | fmt = _T("%04d"); | |
2057 | break; | |
2058 | ||
2059 | case _T('j'): // day of year has 3 digits | |
f6bcfd97 | 2060 | case _T('l'): // milliseconds have 3 digits |
77c3e48a VZ |
2061 | fmt = _T("%03d"); |
2062 | break; | |
2063 | ||
59d04dff VZ |
2064 | case _T('w'): // week day as number has only one |
2065 | fmt = _T("%d"); | |
2066 | break; | |
2067 | ||
77c3e48a VZ |
2068 | default: |
2069 | // it's either another valid format specifier in which case | |
2070 | // the format is "%02d" (for all the rest) or we have the | |
2071 | // field width preceding the format in which case it will | |
2072 | // override the default format anyhow | |
2073 | fmt = _T("%02d"); | |
2074 | } | |
2075 | ||
fc3398f8 VZ |
2076 | bool restart = TRUE; |
2077 | while ( restart ) | |
68ee7c47 | 2078 | { |
fc3398f8 | 2079 | restart = FALSE; |
68ee7c47 | 2080 | |
fc3398f8 VZ |
2081 | // start of the format specification |
2082 | switch ( *p ) | |
2083 | { | |
2084 | case _T('a'): // a weekday name | |
2085 | case _T('A'): | |
2086 | // second parameter should be TRUE for abbreviated names | |
2087 | res += GetWeekDayName(tm.GetWeekDay(), | |
2088 | *p == _T('a') ? Name_Abbr : Name_Full); | |
2089 | break; | |
68ee7c47 | 2090 | |
fc3398f8 VZ |
2091 | case _T('b'): // a month name |
2092 | case _T('B'): | |
2093 | res += GetMonthName(tm.mon, | |
2094 | *p == _T('b') ? Name_Abbr : Name_Full); | |
2095 | break; | |
2096 | ||
2097 | case _T('c'): // locale default date and time representation | |
2098 | case _T('x'): // locale default date representation | |
2099 | // | |
2100 | // the problem: there is no way to know what do these format | |
2101 | // specifications correspond to for the current locale. | |
2102 | // | |
2103 | // the solution: use a hack and still use strftime(): first | |
2104 | // find the YEAR which is a year in the strftime() range (1970 | |
2105 | // - 2038) whose Jan 1 falls on the same week day as the Jan 1 | |
2106 | // of the real year. Then make a copy of the format and | |
2107 | // replace all occurences of YEAR in it with some unique | |
2108 | // string not appearing anywhere else in it, then use | |
2109 | // strftime() to format the date in year YEAR and then replace | |
2110 | // YEAR back by the real year and the unique replacement | |
2111 | // string back with YEAR. Notice that "all occurences of YEAR" | |
2112 | // means all occurences of 4 digit as well as 2 digit form! | |
2113 | // | |
2114 | // the bugs: we assume that neither of %c nor %x contains any | |
2115 | // fields which may change between the YEAR and real year. For | |
2116 | // example, the week number (%U, %W) and the day number (%j) | |
2117 | // will change if one of these years is leap and the other one | |
2118 | // is not! | |
68ee7c47 | 2119 | { |
fc3398f8 VZ |
2120 | // find the YEAR: normally, for any year X, Jan 1 or the |
2121 | // year X + 28 is the same weekday as Jan 1 of X (because | |
2122 | // the weekday advances by 1 for each normal X and by 2 | |
2123 | // for each leap X, hence by 5 every 4 years or by 35 | |
2124 | // which is 0 mod 7 every 28 years) but this rule breaks | |
2125 | // down if there are years between X and Y which are | |
2126 | // divisible by 4 but not leap (i.e. divisible by 100 but | |
2127 | // not 400), hence the correction. | |
2128 | ||
2129 | int yearReal = GetYear(tz); | |
2130 | int mod28 = yearReal % 28; | |
2131 | ||
2132 | // be careful to not go too far - we risk to leave the | |
2133 | // supported range | |
2134 | int year; | |
2135 | if ( mod28 < 10 ) | |
2136 | { | |
2137 | year = 1988 + mod28; // 1988 == 0 (mod 28) | |
2138 | } | |
2139 | else | |
2140 | { | |
2141 | year = 1970 + mod28 - 10; // 1970 == 10 (mod 28) | |
2142 | } | |
e6ec579c | 2143 | |
fc3398f8 VZ |
2144 | int nCentury = year / 100, |
2145 | nCenturyReal = yearReal / 100; | |
c5a1681b | 2146 | |
fc3398f8 VZ |
2147 | // need to adjust for the years divisble by 400 which are |
2148 | // not leap but are counted like leap ones if we just take | |
2149 | // the number of centuries in between for nLostWeekDays | |
2150 | int nLostWeekDays = (nCentury - nCenturyReal) - | |
2151 | (nCentury / 4 - nCenturyReal / 4); | |
c5a1681b | 2152 | |
fc3398f8 VZ |
2153 | // we have to gain back the "lost" weekdays: note that the |
2154 | // effect of this loop is to not do anything to | |
2155 | // nLostWeekDays (which we won't use any more), but to | |
2156 | // (indirectly) set the year correctly | |
2157 | while ( (nLostWeekDays % 7) != 0 ) | |
2158 | { | |
2159 | nLostWeekDays += year++ % 4 ? 1 : 2; | |
2160 | } | |
c5a1681b | 2161 | |
fc3398f8 VZ |
2162 | // at any rate, we couldn't go further than 1988 + 9 + 28! |
2163 | wxASSERT_MSG( year < 2030, | |
2164 | _T("logic error in wxDateTime::Format") ); | |
c5a1681b | 2165 | |
fc3398f8 VZ |
2166 | wxString strYear, strYear2; |
2167 | strYear.Printf(_T("%d"), year); | |
2168 | strYear2.Printf(_T("%d"), year % 100); | |
c5a1681b | 2169 | |
fc3398f8 VZ |
2170 | // find two strings not occuring in format (this is surely |
2171 | // not optimal way of doing it... improvements welcome!) | |
2172 | wxString fmt = format; | |
2173 | wxString replacement = (wxChar)-1; | |
2174 | while ( fmt.Find(replacement) != wxNOT_FOUND ) | |
2175 | { | |
2176 | replacement << (wxChar)-1; | |
2177 | } | |
c5a1681b | 2178 | |
fc3398f8 VZ |
2179 | wxString replacement2 = (wxChar)-2; |
2180 | while ( fmt.Find(replacement) != wxNOT_FOUND ) | |
2181 | { | |
2182 | replacement << (wxChar)-2; | |
2183 | } | |
2184 | ||
2185 | // replace all occurences of year with it | |
2186 | bool wasReplaced = fmt.Replace(strYear, replacement) > 0; | |
2187 | if ( !wasReplaced ) | |
2188 | wasReplaced = fmt.Replace(strYear2, replacement2) > 0; | |
2189 | ||
2190 | // use strftime() to format the same date but in supported | |
2191 | // year | |
2192 | // | |
2193 | // NB: we assume that strftime() doesn't check for the | |
2194 | // date validity and will happily format the date | |
2195 | // corresponding to Feb 29 of a non leap year (which | |
2196 | // may happen if yearReal was leap and year is not) | |
2197 | struct tm tmAdjusted; | |
2198 | InitTm(tmAdjusted); | |
2199 | tmAdjusted.tm_hour = tm.hour; | |
2200 | tmAdjusted.tm_min = tm.min; | |
2201 | tmAdjusted.tm_sec = tm.sec; | |
2202 | tmAdjusted.tm_wday = tm.GetWeekDay(); | |
2203 | tmAdjusted.tm_yday = GetDayOfYear(); | |
2204 | tmAdjusted.tm_mday = tm.mday; | |
2205 | tmAdjusted.tm_mon = tm.mon; | |
2206 | tmAdjusted.tm_year = year - 1900; | |
2207 | tmAdjusted.tm_isdst = 0; // no DST, already adjusted | |
2208 | wxString str = CallStrftime(*p == _T('c') ? _T("%c") | |
2209 | : _T("%x"), | |
2210 | &tmAdjusted); | |
2211 | ||
2212 | // now replace the occurence of 1999 with the real year | |
2213 | wxString strYearReal, strYearReal2; | |
2214 | strYearReal.Printf(_T("%04d"), yearReal); | |
2215 | strYearReal2.Printf(_T("%02d"), yearReal % 100); | |
2216 | str.Replace(strYear, strYearReal); | |
2217 | str.Replace(strYear2, strYearReal2); | |
2218 | ||
2219 | // and replace back all occurences of replacement string | |
2220 | if ( wasReplaced ) | |
2221 | { | |
2222 | str.Replace(replacement2, strYear2); | |
2223 | str.Replace(replacement, strYear); | |
2224 | } | |
2225 | ||
2226 | res += str; | |
68ee7c47 | 2227 | } |
fc3398f8 | 2228 | break; |
c5a1681b | 2229 | |
fc3398f8 VZ |
2230 | case _T('d'): // day of a month (01-31) |
2231 | res += wxString::Format(fmt, tm.mday); | |
2232 | break; | |
68ee7c47 | 2233 | |
fc3398f8 VZ |
2234 | case _T('H'): // hour in 24h format (00-23) |
2235 | res += wxString::Format(fmt, tm.hour); | |
2236 | break; | |
2237 | ||
2238 | case _T('I'): // hour in 12h format (01-12) | |
68ee7c47 | 2239 | { |
fc3398f8 VZ |
2240 | // 24h -> 12h, 0h -> 12h too |
2241 | int hour12 = tm.hour > 12 ? tm.hour - 12 | |
2242 | : tm.hour ? tm.hour : 12; | |
2243 | res += wxString::Format(fmt, hour12); | |
68ee7c47 | 2244 | } |
fc3398f8 | 2245 | break; |
c5a1681b | 2246 | |
fc3398f8 VZ |
2247 | case _T('j'): // day of the year |
2248 | res += wxString::Format(fmt, GetDayOfYear(tz)); | |
2249 | break; | |
68ee7c47 | 2250 | |
f6bcfd97 BP |
2251 | case _T('l'): // milliseconds (NOT STANDARD) |
2252 | res += wxString::Format(fmt, GetMillisecond(tz)); | |
2253 | break; | |
2254 | ||
fc3398f8 VZ |
2255 | case _T('m'): // month as a number (01-12) |
2256 | res += wxString::Format(fmt, tm.mon + 1); | |
2257 | break; | |
68ee7c47 | 2258 | |
fc3398f8 VZ |
2259 | case _T('M'): // minute as a decimal number (00-59) |
2260 | res += wxString::Format(fmt, tm.min); | |
2261 | break; | |
68ee7c47 | 2262 | |
fc3398f8 VZ |
2263 | case _T('p'): // AM or PM string |
2264 | res += CallStrftime(_T("%p"), &tmTimeOnly); | |
2265 | break; | |
68ee7c47 | 2266 | |
fc3398f8 VZ |
2267 | case _T('S'): // second as a decimal number (00-61) |
2268 | res += wxString::Format(fmt, tm.sec); | |
2269 | break; | |
68ee7c47 | 2270 | |
fc3398f8 VZ |
2271 | case _T('U'): // week number in the year (Sunday 1st week day) |
2272 | res += wxString::Format(fmt, GetWeekOfYear(Sunday_First, tz)); | |
2273 | break; | |
68ee7c47 | 2274 | |
fc3398f8 VZ |
2275 | case _T('W'): // week number in the year (Monday 1st week day) |
2276 | res += wxString::Format(fmt, GetWeekOfYear(Monday_First, tz)); | |
2277 | break; | |
68ee7c47 | 2278 | |
fc3398f8 VZ |
2279 | case _T('w'): // weekday as a number (0-6), Sunday = 0 |
2280 | res += wxString::Format(fmt, tm.GetWeekDay()); | |
2281 | break; | |
68ee7c47 | 2282 | |
fc3398f8 | 2283 | // case _T('x'): -- handled with "%c" |
68ee7c47 | 2284 | |
fc3398f8 VZ |
2285 | case _T('X'): // locale default time representation |
2286 | // just use strftime() to format the time for us | |
2287 | res += CallStrftime(_T("%X"), &tmTimeOnly); | |
2288 | break; | |
68ee7c47 | 2289 | |
fc3398f8 VZ |
2290 | case _T('y'): // year without century (00-99) |
2291 | res += wxString::Format(fmt, tm.year % 100); | |
2292 | break; | |
68ee7c47 | 2293 | |
fc3398f8 VZ |
2294 | case _T('Y'): // year with century |
2295 | res += wxString::Format(fmt, tm.year); | |
2296 | break; | |
68ee7c47 | 2297 | |
fc3398f8 VZ |
2298 | case _T('Z'): // timezone name |
2299 | res += CallStrftime(_T("%Z"), &tmTimeOnly); | |
2300 | break; | |
68ee7c47 | 2301 | |
fc3398f8 VZ |
2302 | default: |
2303 | // is it the format width? | |
2304 | fmt.Empty(); | |
2305 | while ( *p == _T('-') || *p == _T('+') || | |
2306 | *p == _T(' ') || wxIsdigit(*p) ) | |
2307 | { | |
2308 | fmt += *p; | |
2309 | } | |
68ee7c47 | 2310 | |
fc3398f8 VZ |
2311 | if ( !fmt.IsEmpty() ) |
2312 | { | |
2313 | // we've only got the flags and width so far in fmt | |
2314 | fmt.Prepend(_T('%')); | |
2315 | fmt.Append(_T('d')); | |
68ee7c47 | 2316 | |
fc3398f8 | 2317 | restart = TRUE; |
68ee7c47 | 2318 | |
fc3398f8 VZ |
2319 | break; |
2320 | } | |
68ee7c47 | 2321 | |
fc3398f8 VZ |
2322 | // no, it wasn't the width |
2323 | wxFAIL_MSG(_T("unknown format specificator")); | |
68ee7c47 | 2324 | |
fc3398f8 | 2325 | // fall through and just copy it nevertheless |
68ee7c47 | 2326 | |
fc3398f8 VZ |
2327 | case _T('%'): // a percent sign |
2328 | res += *p; | |
2329 | break; | |
2330 | ||
2331 | case 0: // the end of string | |
2332 | wxFAIL_MSG(_T("missing format at the end of string")); | |
2333 | ||
2334 | // just put the '%' which was the last char in format | |
2335 | res += _T('%'); | |
2336 | break; | |
2337 | } | |
68ee7c47 | 2338 | } |
c5a1681b VZ |
2339 | } |
2340 | ||
68ee7c47 | 2341 | return res; |
b76b015e | 2342 | } |
fcc3d7cb | 2343 | |
cd0b1709 VZ |
2344 | // this function parses a string in (strict) RFC 822 format: see the section 5 |
2345 | // of the RFC for the detailed description, but briefly it's something of the | |
2346 | // form "Sat, 18 Dec 1999 00:48:30 +0100" | |
2347 | // | |
2348 | // this function is "strict" by design - it must reject anything except true | |
2349 | // RFC822 time specs. | |
2350 | // | |
2351 | // TODO a great candidate for using reg exps | |
2352 | const wxChar *wxDateTime::ParseRfc822Date(const wxChar* date) | |
2353 | { | |
2354 | wxCHECK_MSG( date, (wxChar *)NULL, _T("NULL pointer in wxDateTime::Parse") ); | |
2355 | ||
2356 | const wxChar *p = date; | |
2357 | const wxChar *comma = wxStrchr(p, _T(',')); | |
2358 | if ( comma ) | |
2359 | { | |
2360 | // the part before comma is the weekday | |
2361 | ||
2362 | // skip it for now - we don't use but might check that it really | |
2363 | // corresponds to the specfied date | |
2364 | p = comma + 1; | |
2365 | ||
2366 | if ( *p != _T(' ') ) | |
2367 | { | |
2368 | wxLogDebug(_T("no space after weekday in RFC822 time spec")); | |
2369 | ||
2370 | return (wxChar *)NULL; | |
2371 | } | |
2372 | ||
2373 | p++; // skip space | |
2374 | } | |
2375 | ||
2376 | // the following 1 or 2 digits are the day number | |
2377 | if ( !wxIsdigit(*p) ) | |
2378 | { | |
2379 | wxLogDebug(_T("day number expected in RFC822 time spec, none found")); | |
2380 | ||
2381 | return (wxChar *)NULL; | |
2382 | } | |
2383 | ||
2384 | wxDateTime_t day = *p++ - _T('0'); | |
2385 | if ( wxIsdigit(*p) ) | |
2386 | { | |
2387 | day *= 10; | |
2388 | day += *p++ - _T('0'); | |
2389 | } | |
2390 | ||
2391 | if ( *p++ != _T(' ') ) | |
2392 | { | |
2393 | return (wxChar *)NULL; | |
2394 | } | |
2395 | ||
2396 | // the following 3 letters specify the month | |
2397 | wxString monName(p, 3); | |
2398 | Month mon; | |
2399 | if ( monName == _T("Jan") ) | |
2400 | mon = Jan; | |
2401 | else if ( monName == _T("Feb") ) | |
2402 | mon = Feb; | |
2403 | else if ( monName == _T("Mar") ) | |
2404 | mon = Mar; | |
2405 | else if ( monName == _T("Apr") ) | |
2406 | mon = Apr; | |
2407 | else if ( monName == _T("May") ) | |
2408 | mon = May; | |
2409 | else if ( monName == _T("Jun") ) | |
2410 | mon = Jun; | |
2411 | else if ( monName == _T("Jul") ) | |
2412 | mon = Jul; | |
2413 | else if ( monName == _T("Aug") ) | |
2414 | mon = Aug; | |
2415 | else if ( monName == _T("Sep") ) | |
2416 | mon = Sep; | |
2417 | else if ( monName == _T("Oct") ) | |
2418 | mon = Oct; | |
2419 | else if ( monName == _T("Nov") ) | |
2420 | mon = Nov; | |
2421 | else if ( monName == _T("Dec") ) | |
2422 | mon = Dec; | |
2423 | else | |
2424 | { | |
2425 | wxLogDebug(_T("Invalid RFC 822 month name '%s'"), monName.c_str()); | |
2426 | ||
2427 | return (wxChar *)NULL; | |
2428 | } | |
2429 | ||
2430 | p += 3; | |
2431 | ||
2432 | if ( *p++ != _T(' ') ) | |
2433 | { | |
2434 | return (wxChar *)NULL; | |
2435 | } | |
2436 | ||
2437 | // next is the year | |
2438 | if ( !wxIsdigit(*p) ) | |
2439 | { | |
2440 | // no year? | |
2441 | return (wxChar *)NULL; | |
2442 | } | |
2443 | ||
2444 | int year = *p++ - _T('0'); | |
2445 | ||
2446 | if ( !wxIsdigit(*p) ) | |
2447 | { | |
2448 | // should have at least 2 digits in the year | |
2449 | return (wxChar *)NULL; | |
2450 | } | |
2451 | ||
2452 | year *= 10; | |
2453 | year += *p++ - _T('0'); | |
2454 | ||
2455 | // is it a 2 digit year (as per original RFC 822) or a 4 digit one? | |
2456 | if ( wxIsdigit(*p) ) | |
2457 | { | |
2458 | year *= 10; | |
2459 | year += *p++ - _T('0'); | |
2460 | ||
2461 | if ( !wxIsdigit(*p) ) | |
2462 | { | |
2463 | // no 3 digit years please | |
2464 | return (wxChar *)NULL; | |
2465 | } | |
2466 | ||
2467 | year *= 10; | |
2468 | year += *p++ - _T('0'); | |
2469 | } | |
2470 | ||
2471 | if ( *p++ != _T(' ') ) | |
2472 | { | |
2473 | return (wxChar *)NULL; | |
2474 | } | |
2475 | ||
2476 | // time is in the format hh:mm:ss and seconds are optional | |
2477 | if ( !wxIsdigit(*p) ) | |
2478 | { | |
2479 | return (wxChar *)NULL; | |
2480 | } | |
2481 | ||
2482 | wxDateTime_t hour = *p++ - _T('0'); | |
2483 | ||
2484 | if ( !wxIsdigit(*p) ) | |
2485 | { | |
2486 | return (wxChar *)NULL; | |
2487 | } | |
2488 | ||
2489 | hour *= 10; | |
2490 | hour += *p++ - _T('0'); | |
2491 | ||
2492 | if ( *p++ != _T(':') ) | |
2493 | { | |
2494 | return (wxChar *)NULL; | |
2495 | } | |
2496 | ||
2497 | if ( !wxIsdigit(*p) ) | |
2498 | { | |
2499 | return (wxChar *)NULL; | |
2500 | } | |
2501 | ||
2502 | wxDateTime_t min = *p++ - _T('0'); | |
2503 | ||
2504 | if ( !wxIsdigit(*p) ) | |
2505 | { | |
2506 | return (wxChar *)NULL; | |
2507 | } | |
2508 | ||
2509 | min *= 10; | |
2510 | min += *p++ - _T('0'); | |
2511 | ||
2512 | wxDateTime_t sec = 0; | |
2513 | if ( *p++ == _T(':') ) | |
2514 | { | |
2515 | if ( !wxIsdigit(*p) ) | |
2516 | { | |
2517 | return (wxChar *)NULL; | |
2518 | } | |
2519 | ||
2520 | sec = *p++ - _T('0'); | |
2521 | ||
2522 | if ( !wxIsdigit(*p) ) | |
2523 | { | |
2524 | return (wxChar *)NULL; | |
2525 | } | |
2526 | ||
2527 | sec *= 10; | |
2528 | sec += *p++ - _T('0'); | |
2529 | } | |
2530 | ||
2531 | if ( *p++ != _T(' ') ) | |
2532 | { | |
2533 | return (wxChar *)NULL; | |
2534 | } | |
2535 | ||
2536 | // and now the interesting part: the timezone | |
40973ea5 | 2537 | int offset; |
cd0b1709 VZ |
2538 | if ( *p == _T('-') || *p == _T('+') ) |
2539 | { | |
2540 | // the explicit offset given: it has the form of hhmm | |
2541 | bool plus = *p++ == _T('+'); | |
2542 | ||
2543 | if ( !wxIsdigit(*p) || !wxIsdigit(*(p + 1)) ) | |
2544 | { | |
2545 | return (wxChar *)NULL; | |
2546 | } | |
2547 | ||
2548 | // hours | |
2549 | offset = 60*(10*(*p - _T('0')) + (*(p + 1) - _T('0'))); | |
2550 | ||
2551 | p += 2; | |
2552 | ||
2553 | if ( !wxIsdigit(*p) || !wxIsdigit(*(p + 1)) ) | |
2554 | { | |
2555 | return (wxChar *)NULL; | |
2556 | } | |
2557 | ||
2558 | // minutes | |
2559 | offset += 10*(*p - _T('0')) + (*(p + 1) - _T('0')); | |
2560 | ||
2561 | if ( !plus ) | |
2562 | { | |
2563 | offset = -offset; | |
2564 | } | |
2565 | ||
2566 | p += 2; | |
2567 | } | |
2568 | else | |
2569 | { | |
2570 | // the symbolic timezone given: may be either military timezone or one | |
2571 | // of standard abbreviations | |
2572 | if ( !*(p + 1) ) | |
2573 | { | |
2574 | // military: Z = UTC, J unused, A = -1, ..., Y = +12 | |
2575 | static const int offsets[26] = | |
2576 | { | |
2577 | //A B C D E F G H I J K L M | |
2578 | -1, -2, -3, -4, -5, -6, -7, -8, -9, 0, -10, -11, -12, | |
2579 | //N O P R Q S T U V W Z Y Z | |
2580 | +1, +2, +3, +4, +5, +6, +7, +8, +9, +10, +11, +12, 0 | |
2581 | }; | |
2582 | ||
2583 | if ( *p < _T('A') || *p > _T('Z') || *p == _T('J') ) | |
2584 | { | |
2585 | wxLogDebug(_T("Invalid militaty timezone '%c'"), *p); | |
2586 | ||
2587 | return (wxChar *)NULL; | |
2588 | } | |
2589 | ||
2590 | offset = offsets[*p++ - _T('A')]; | |
2591 | } | |
2592 | else | |
2593 | { | |
2594 | // abbreviation | |
2595 | wxString tz = p; | |
2596 | if ( tz == _T("UT") || tz == _T("UTC") || tz == _T("GMT") ) | |
2597 | offset = 0; | |
2598 | else if ( tz == _T("AST") ) | |
2599 | offset = AST - GMT0; | |
2600 | else if ( tz == _T("ADT") ) | |
2601 | offset = ADT - GMT0; | |
2602 | else if ( tz == _T("EST") ) | |
2603 | offset = EST - GMT0; | |
2604 | else if ( tz == _T("EDT") ) | |
2605 | offset = EDT - GMT0; | |
2606 | else if ( tz == _T("CST") ) | |
2607 | offset = CST - GMT0; | |
2608 | else if ( tz == _T("CDT") ) | |
2609 | offset = CDT - GMT0; | |
2610 | else if ( tz == _T("MST") ) | |
2611 | offset = MST - GMT0; | |
2612 | else if ( tz == _T("MDT") ) | |
2613 | offset = MDT - GMT0; | |
2614 | else if ( tz == _T("PST") ) | |
2615 | offset = PST - GMT0; | |
2616 | else if ( tz == _T("PDT") ) | |
2617 | offset = PDT - GMT0; | |
2618 | else | |
2619 | { | |
2620 | wxLogDebug(_T("Unknown RFC 822 timezone '%s'"), p); | |
2621 | ||
2622 | return (wxChar *)NULL; | |
2623 | } | |
2624 | ||
2625 | p += tz.length(); | |
2626 | } | |
2627 | ||
2628 | // make it minutes | |
2629 | offset *= 60; | |
2630 | } | |
2631 | ||
2632 | // the spec was correct | |
2633 | Set(day, mon, year, hour, min, sec); | |
487c1f7e | 2634 | MakeTimezone((wxDateTime_t)(60*offset)); |
cd0b1709 VZ |
2635 | |
2636 | return p; | |
2637 | } | |
2638 | ||
f0f951fa VZ |
2639 | const wxChar *wxDateTime::ParseFormat(const wxChar *date, |
2640 | const wxChar *format, | |
2641 | const wxDateTime& dateDef) | |
cd0b1709 VZ |
2642 | { |
2643 | wxCHECK_MSG( date && format, (wxChar *)NULL, | |
f0f951fa | 2644 | _T("NULL pointer in wxDateTime::ParseFormat()") ); |
cd0b1709 | 2645 | |
f0f951fa VZ |
2646 | wxString str; |
2647 | unsigned long num; | |
cd0b1709 | 2648 | |
f0f951fa VZ |
2649 | // what fields have we found? |
2650 | bool haveWDay = FALSE, | |
2651 | haveYDay = FALSE, | |
2652 | haveDay = FALSE, | |
2653 | haveMon = FALSE, | |
2654 | haveYear = FALSE, | |
2655 | haveHour = FALSE, | |
2656 | haveMin = FALSE, | |
2657 | haveSec = FALSE; | |
2658 | ||
2659 | bool hourIsIn12hFormat = FALSE, // or in 24h one? | |
2660 | isPM = FALSE; // AM by default | |
2661 | ||
2662 | // and the value of the items we have (init them to get rid of warnings) | |
2663 | wxDateTime_t sec = 0, | |
2664 | min = 0, | |
2665 | hour = 0; | |
2666 | WeekDay wday = Inv_WeekDay; | |
2667 | wxDateTime_t yday = 0, | |
2668 | mday = 0; | |
2669 | wxDateTime::Month mon = Inv_Month; | |
2670 | int year = 0; | |
2671 | ||
2672 | const wxChar *input = date; | |
2673 | for ( const wxChar *fmt = format; *fmt; fmt++ ) | |
2674 | { | |
2675 | if ( *fmt != _T('%') ) | |
2676 | { | |
2677 | if ( wxIsspace(*fmt) ) | |
2678 | { | |
2679 | // a white space in the format string matches 0 or more white | |
2680 | // spaces in the input | |
2681 | while ( wxIsspace(*input) ) | |
2682 | { | |
2683 | input++; | |
2684 | } | |
2685 | } | |
2686 | else // !space | |
2687 | { | |
2688 | // any other character (not whitespace, not '%') must be | |
2689 | // matched by itself in the input | |
2690 | if ( *input++ != *fmt ) | |
2691 | { | |
2692 | // no match | |
2693 | return (wxChar *)NULL; | |
2694 | } | |
2695 | } | |
2696 | ||
2697 | // done with this format char | |
2698 | continue; | |
2699 | } | |
2700 | ||
2701 | // start of a format specification | |
f6bcfd97 BP |
2702 | |
2703 | // parse the optional width | |
2704 | size_t width = 0; | |
1c193821 | 2705 | while ( wxIsdigit(*++fmt) ) |
f6bcfd97 BP |
2706 | { |
2707 | width *= 10; | |
2708 | width += *fmt - _T('0'); | |
2709 | } | |
2710 | ||
4147efe9 VZ |
2711 | // the default widths for the various fields |
2712 | if ( !width ) | |
2713 | { | |
2714 | switch ( *fmt ) | |
2715 | { | |
2716 | case _T('Y'): // year has 4 digits | |
2717 | width = 4; | |
2718 | break; | |
2719 | ||
2720 | case _T('j'): // day of year has 3 digits | |
2721 | case _T('l'): // milliseconds have 3 digits | |
2722 | width = 3; | |
2723 | break; | |
2724 | ||
2725 | case _T('w'): // week day as number has only one | |
2726 | width = 1; | |
2727 | break; | |
2728 | ||
2729 | default: | |
2730 | // default for all other fields | |
2731 | width = 2; | |
2732 | } | |
2733 | } | |
2734 | ||
f6bcfd97 BP |
2735 | // then the format itself |
2736 | switch ( *fmt ) | |
f0f951fa VZ |
2737 | { |
2738 | case _T('a'): // a weekday name | |
2739 | case _T('A'): | |
2740 | { | |
2741 | int flag = *fmt == _T('a') ? Name_Abbr : Name_Full; | |
2742 | wday = GetWeekDayFromName(GetAlphaToken(input), flag); | |
2743 | if ( wday == Inv_WeekDay ) | |
2744 | { | |
2745 | // no match | |
2746 | return (wxChar *)NULL; | |
2747 | } | |
2748 | } | |
2749 | haveWDay = TRUE; | |
2750 | break; | |
2751 | ||
2752 | case _T('b'): // a month name | |
2753 | case _T('B'): | |
2754 | { | |
2755 | int flag = *fmt == _T('b') ? Name_Abbr : Name_Full; | |
2756 | mon = GetMonthFromName(GetAlphaToken(input), flag); | |
2757 | if ( mon == Inv_Month ) | |
2758 | { | |
2759 | // no match | |
2760 | return (wxChar *)NULL; | |
2761 | } | |
2762 | } | |
2763 | haveMon = TRUE; | |
2764 | break; | |
2765 | ||
2766 | case _T('c'): // locale default date and time representation | |
2767 | { | |
2768 | wxDateTime dt; | |
2769 | ||
2770 | // this is the format which corresponds to ctime() output | |
2771 | // and strptime("%c") should parse it, so try it first | |
41acf5c0 | 2772 | static const wxChar *fmtCtime = _T("%a %b %d %H:%M:%S %Y"); |
f0f951fa VZ |
2773 | |
2774 | const wxChar *result = dt.ParseFormat(input, fmtCtime); | |
2775 | if ( !result ) | |
2776 | { | |
2777 | result = dt.ParseFormat(input, _T("%x %X")); | |
2778 | } | |
2779 | ||
2780 | if ( !result ) | |
2781 | { | |
2782 | result = dt.ParseFormat(input, _T("%X %x")); | |
2783 | } | |
2784 | ||
2785 | if ( !result ) | |
2786 | { | |
2787 | // we've tried everything and still no match | |
2788 | return (wxChar *)NULL; | |
2789 | } | |
2790 | ||
be4017f8 VZ |
2791 | Tm tm = dt.GetTm(); |
2792 | ||
2793 | haveDay = haveMon = haveYear = | |
2794 | haveHour = haveMin = haveSec = TRUE; | |
2795 | ||
2796 | hour = tm.hour; | |
2797 | min = tm.min; | |
2798 | sec = tm.sec; | |
2799 | ||
2800 | year = tm.year; | |
2801 | mon = tm.mon; | |
2802 | mday = tm.mday; | |
2803 | ||
f0f951fa VZ |
2804 | input = result; |
2805 | } | |
2806 | break; | |
2807 | ||
2808 | case _T('d'): // day of a month (01-31) | |
f6bcfd97 BP |
2809 | if ( !GetNumericToken(width, input, &num) || |
2810 | (num > 31) || (num < 1) ) | |
f0f951fa VZ |
2811 | { |
2812 | // no match | |
2813 | return (wxChar *)NULL; | |
2814 | } | |
2815 | ||
2816 | // we can't check whether the day range is correct yet, will | |
2817 | // do it later - assume ok for now | |
2818 | haveDay = TRUE; | |
2819 | mday = (wxDateTime_t)num; | |
2820 | break; | |
5f287370 | 2821 | |
f0f951fa | 2822 | case _T('H'): // hour in 24h format (00-23) |
f6bcfd97 | 2823 | if ( !GetNumericToken(width, input, &num) || (num > 23) ) |
f0f951fa VZ |
2824 | { |
2825 | // no match | |
2826 | return (wxChar *)NULL; | |
2827 | } | |
2828 | ||
2829 | haveHour = TRUE; | |
2830 | hour = (wxDateTime_t)num; | |
2831 | break; | |
2832 | ||
2833 | case _T('I'): // hour in 12h format (01-12) | |
f6bcfd97 | 2834 | if ( !GetNumericToken(width, input, &num) || !num || (num > 12) ) |
f0f951fa VZ |
2835 | { |
2836 | // no match | |
2837 | return (wxChar *)NULL; | |
2838 | } | |
2839 | ||
2840 | haveHour = TRUE; | |
2841 | hourIsIn12hFormat = TRUE; | |
479cd5de | 2842 | hour = (wxDateTime_t)(num % 12); // 12 should be 0 |
f0f951fa VZ |
2843 | break; |
2844 | ||
2845 | case _T('j'): // day of the year | |
f6bcfd97 | 2846 | if ( !GetNumericToken(width, input, &num) || !num || (num > 366) ) |
f0f951fa VZ |
2847 | { |
2848 | // no match | |
2849 | return (wxChar *)NULL; | |
2850 | } | |
2851 | ||
2852 | haveYDay = TRUE; | |
2853 | yday = (wxDateTime_t)num; | |
2854 | break; | |
2855 | ||
2856 | case _T('m'): // month as a number (01-12) | |
f6bcfd97 | 2857 | if ( !GetNumericToken(width, input, &num) || !num || (num > 12) ) |
f0f951fa VZ |
2858 | { |
2859 | // no match | |
2860 | return (wxChar *)NULL; | |
2861 | } | |
2862 | ||
2863 | haveMon = TRUE; | |
be4017f8 | 2864 | mon = (Month)(num - 1); |
f0f951fa VZ |
2865 | break; |
2866 | ||
2867 | case _T('M'): // minute as a decimal number (00-59) | |
f6bcfd97 | 2868 | if ( !GetNumericToken(width, input, &num) || (num > 59) ) |
f0f951fa VZ |
2869 | { |
2870 | // no match | |
2871 | return (wxChar *)NULL; | |
2872 | } | |
2873 | ||
2874 | haveMin = TRUE; | |
2875 | min = (wxDateTime_t)num; | |
2876 | break; | |
2877 | ||
2878 | case _T('p'): // AM or PM string | |
2879 | { | |
2880 | wxString am, pm, token = GetAlphaToken(input); | |
2881 | ||
2882 | GetAmPmStrings(&am, &pm); | |
0308fd61 JS |
2883 | if (am.IsEmpty() && pm.IsEmpty()) |
2884 | return (wxChar *)NULL; // no am/pm strings defined | |
f0f951fa VZ |
2885 | if ( token.CmpNoCase(pm) == 0 ) |
2886 | { | |
2887 | isPM = TRUE; | |
2888 | } | |
2889 | else if ( token.CmpNoCase(am) != 0 ) | |
2890 | { | |
2891 | // no match | |
2892 | return (wxChar *)NULL; | |
2893 | } | |
2894 | } | |
2895 | break; | |
2896 | ||
2897 | case _T('r'): // time as %I:%M:%S %p | |
2898 | { | |
2899 | wxDateTime dt; | |
2900 | input = dt.ParseFormat(input, _T("%I:%M:%S %p")); | |
2901 | if ( !input ) | |
2902 | { | |
2903 | // no match | |
2904 | return (wxChar *)NULL; | |
2905 | } | |
2906 | ||
2907 | haveHour = haveMin = haveSec = TRUE; | |
2908 | ||
2909 | Tm tm = dt.GetTm(); | |
2910 | hour = tm.hour; | |
2911 | min = tm.min; | |
2912 | sec = tm.sec; | |
2913 | } | |
2914 | break; | |
2915 | ||
2916 | case _T('R'): // time as %H:%M | |
2917 | { | |
2918 | wxDateTime dt; | |
2919 | input = dt.ParseFormat(input, _T("%H:%M")); | |
2920 | if ( !input ) | |
2921 | { | |
2922 | // no match | |
2923 | return (wxChar *)NULL; | |
2924 | } | |
2925 | ||
2926 | haveHour = haveMin = TRUE; | |
2927 | ||
2928 | Tm tm = dt.GetTm(); | |
2929 | hour = tm.hour; | |
2930 | min = tm.min; | |
2931 | } | |
2932 | ||
2933 | case _T('S'): // second as a decimal number (00-61) | |
f6bcfd97 | 2934 | if ( !GetNumericToken(width, input, &num) || (num > 61) ) |
f0f951fa VZ |
2935 | { |
2936 | // no match | |
2937 | return (wxChar *)NULL; | |
2938 | } | |
2939 | ||
2940 | haveSec = TRUE; | |
2941 | sec = (wxDateTime_t)num; | |
2942 | break; | |
2943 | ||
2944 | case _T('T'): // time as %H:%M:%S | |
2945 | { | |
2946 | wxDateTime dt; | |
2947 | input = dt.ParseFormat(input, _T("%H:%M:%S")); | |
2948 | if ( !input ) | |
2949 | { | |
2950 | // no match | |
2951 | return (wxChar *)NULL; | |
2952 | } | |
2953 | ||
2954 | haveHour = haveMin = haveSec = TRUE; | |
2955 | ||
2956 | Tm tm = dt.GetTm(); | |
2957 | hour = tm.hour; | |
2958 | min = tm.min; | |
2959 | sec = tm.sec; | |
2960 | } | |
be4017f8 | 2961 | break; |
f0f951fa VZ |
2962 | |
2963 | case _T('w'): // weekday as a number (0-6), Sunday = 0 | |
f6bcfd97 | 2964 | if ( !GetNumericToken(width, input, &num) || (wday > 6) ) |
f0f951fa VZ |
2965 | { |
2966 | // no match | |
2967 | return (wxChar *)NULL; | |
2968 | } | |
2969 | ||
2970 | haveWDay = TRUE; | |
2971 | wday = (WeekDay)num; | |
2972 | break; | |
2973 | ||
2974 | case _T('x'): // locale default date representation | |
2975 | #ifdef HAVE_STRPTIME | |
2423ef22 | 2976 | // try using strptime() -- it may fail even if the input is |
f0f951fa | 2977 | // correct but the date is out of range, so we will fall back |
2423ef22 | 2978 | // to our generic code anyhow |
f0f951fa VZ |
2979 | { |
2980 | struct tm tm; | |
2423ef22 VZ |
2981 | |
2982 | const wxChar *result = CallStrptime(input, "%x", &tm); | |
f0f951fa VZ |
2983 | if ( result ) |
2984 | { | |
2985 | input = result; | |
2986 | ||
2987 | haveDay = haveMon = haveYear = TRUE; | |
2988 | ||
2989 | year = 1900 + tm.tm_year; | |
2990 | mon = (Month)tm.tm_mon; | |
2991 | mday = tm.tm_mday; | |
2992 | ||
2993 | break; | |
2994 | } | |
2995 | } | |
2996 | #endif // HAVE_STRPTIME | |
2997 | ||
2998 | // TODO query the LOCALE_IDATE setting under Win32 | |
2999 | { | |
3000 | wxDateTime dt; | |
3001 | ||
41acf5c0 | 3002 | wxString fmtDate, fmtDateAlt; |
f0f951fa VZ |
3003 | if ( IsWestEuropeanCountry(GetCountry()) || |
3004 | GetCountry() == Russia ) | |
3005 | { | |
3006 | fmtDate = _T("%d/%m/%y"); | |
41acf5c0 | 3007 | fmtDateAlt = _T("%m/%d/%y"); |
f0f951fa VZ |
3008 | } |
3009 | else // assume USA | |
3010 | { | |
3011 | fmtDate = _T("%m/%d/%y"); | |
41acf5c0 | 3012 | fmtDateAlt = _T("%d/%m/%y"); |
f0f951fa VZ |
3013 | } |
3014 | ||
3015 | const wxChar *result = dt.ParseFormat(input, fmtDate); | |
41acf5c0 VZ |
3016 | |
3017 | if ( !result ) | |
3018 | { | |
3019 | // ok, be nice and try another one | |
3020 | result = dt.ParseFormat(input, fmtDateAlt); | |
3021 | } | |
3022 | ||
f0f951fa VZ |
3023 | if ( !result ) |
3024 | { | |
3025 | // bad luck | |
3026 | return (wxChar *)NULL; | |
3027 | } | |
3028 | ||
3029 | Tm tm = dt.GetTm(); | |
3030 | ||
3031 | haveDay = haveMon = haveYear = TRUE; | |
3032 | ||
3033 | year = tm.year; | |
3034 | mon = tm.mon; | |
3035 | mday = tm.mday; | |
3036 | ||
3037 | input = result; | |
3038 | } | |
3039 | ||
3040 | break; | |
3041 | ||
3042 | case _T('X'): // locale default time representation | |
3043 | #ifdef HAVE_STRPTIME | |
3044 | { | |
3045 | // use strptime() to do it for us (FIXME !Unicode friendly) | |
3046 | struct tm tm; | |
2423ef22 | 3047 | input = CallStrptime(input, "%X", &tm); |
f0f951fa VZ |
3048 | if ( !input ) |
3049 | { | |
3050 | return (wxChar *)NULL; | |
3051 | } | |
3052 | ||
3053 | haveHour = haveMin = haveSec = TRUE; | |
3054 | ||
3055 | hour = tm.tm_hour; | |
3056 | min = tm.tm_min; | |
3057 | sec = tm.tm_sec; | |
3058 | } | |
3059 | #else // !HAVE_STRPTIME | |
3060 | // TODO under Win32 we can query the LOCALE_ITIME system | |
3061 | // setting which says whether the default time format is | |
3062 | // 24 or 12 hour | |
3063 | { | |
3064 | // try to parse what follows as "%H:%M:%S" and, if this | |
3065 | // fails, as "%I:%M:%S %p" - this should catch the most | |
3066 | // common cases | |
3067 | wxDateTime dt; | |
3068 | ||
3069 | const wxChar *result = dt.ParseFormat(input, _T("%T")); | |
3070 | if ( !result ) | |
3071 | { | |
3072 | result = dt.ParseFormat(input, _T("%r")); | |
3073 | } | |
3074 | ||
3075 | if ( !result ) | |
3076 | { | |
3077 | // no match | |
3078 | return (wxChar *)NULL; | |
3079 | } | |
3080 | ||
3081 | haveHour = haveMin = haveSec = TRUE; | |
3082 | ||
3083 | Tm tm = dt.GetTm(); | |
3084 | hour = tm.hour; | |
3085 | min = tm.min; | |
3086 | sec = tm.sec; | |
3087 | ||
3088 | input = result; | |
3089 | } | |
3090 | #endif // HAVE_STRPTIME/!HAVE_STRPTIME | |
3091 | break; | |
3092 | ||
3093 | case _T('y'): // year without century (00-99) | |
f6bcfd97 | 3094 | if ( !GetNumericToken(width, input, &num) || (num > 99) ) |
f0f951fa VZ |
3095 | { |
3096 | // no match | |
3097 | return (wxChar *)NULL; | |
3098 | } | |
3099 | ||
3100 | haveYear = TRUE; | |
f6bcfd97 BP |
3101 | |
3102 | // TODO should have an option for roll over date instead of | |
3103 | // hard coding it here | |
3104 | year = (num > 30 ? 1900 : 2000) + (wxDateTime_t)num; | |
f0f951fa VZ |
3105 | break; |
3106 | ||
3107 | case _T('Y'): // year with century | |
f6bcfd97 | 3108 | if ( !GetNumericToken(width, input, &num) ) |
f0f951fa VZ |
3109 | { |
3110 | // no match | |
3111 | return (wxChar *)NULL; | |
3112 | } | |
3113 | ||
be4017f8 VZ |
3114 | haveYear = TRUE; |
3115 | year = (wxDateTime_t)num; | |
f0f951fa VZ |
3116 | break; |
3117 | ||
3118 | case _T('Z'): // timezone name | |
3119 | wxFAIL_MSG(_T("TODO")); | |
3120 | break; | |
3121 | ||
3122 | case _T('%'): // a percent sign | |
3123 | if ( *input++ != _T('%') ) | |
3124 | { | |
3125 | // no match | |
3126 | return (wxChar *)NULL; | |
3127 | } | |
3128 | break; | |
3129 | ||
3130 | case 0: // the end of string | |
3131 | wxFAIL_MSG(_T("unexpected format end")); | |
3132 | ||
3133 | // fall through | |
3134 | ||
3135 | default: // not a known format spec | |
3136 | return (wxChar *)NULL; | |
3137 | } | |
3138 | } | |
3139 | ||
3140 | // format matched, try to construct a date from what we have now | |
3141 | Tm tmDef; | |
3142 | if ( dateDef.IsValid() ) | |
3143 | { | |
3144 | // take this date as default | |
3145 | tmDef = dateDef.GetTm(); | |
3146 | } | |
c3302e7e | 3147 | else if ( IsValid() ) |
f0f951fa VZ |
3148 | { |
3149 | // if this date is valid, don't change it | |
3150 | tmDef = GetTm(); | |
3151 | } | |
3152 | else | |
3153 | { | |
3154 | // no default and this date is invalid - fall back to Today() | |
3155 | tmDef = Today().GetTm(); | |
3156 | } | |
3157 | ||
3158 | Tm tm = tmDef; | |
3159 | ||
3160 | // set the date | |
3161 | if ( haveYear ) | |
3162 | { | |
3163 | tm.year = year; | |
3164 | } | |
3165 | ||
3166 | // TODO we don't check here that the values are consistent, if both year | |
3167 | // day and month/day were found, we just ignore the year day and we | |
3168 | // also always ignore the week day | |
3169 | if ( haveMon && haveDay ) | |
3170 | { | |
be4017f8 VZ |
3171 | if ( mday > GetNumOfDaysInMonth(tm.year, mon) ) |
3172 | { | |
3173 | wxLogDebug(_T("bad month day in wxDateTime::ParseFormat")); | |
3174 | ||
3175 | return (wxChar *)NULL; | |
3176 | } | |
3177 | ||
f0f951fa VZ |
3178 | tm.mon = mon; |
3179 | tm.mday = mday; | |
3180 | } | |
3181 | else if ( haveYDay ) | |
3182 | { | |
be4017f8 VZ |
3183 | if ( yday > GetNumberOfDays(tm.year) ) |
3184 | { | |
3185 | wxLogDebug(_T("bad year day in wxDateTime::ParseFormat")); | |
3186 | ||
3187 | return (wxChar *)NULL; | |
3188 | } | |
3189 | ||
f0f951fa VZ |
3190 | Tm tm2 = wxDateTime(1, Jan, tm.year).SetToYearDay(yday).GetTm(); |
3191 | ||
3192 | tm.mon = tm2.mon; | |
3193 | tm.mday = tm2.mday; | |
3194 | } | |
3195 | ||
3196 | // deal with AM/PM | |
3197 | if ( haveHour && hourIsIn12hFormat && isPM ) | |
3198 | { | |
3199 | // translate to 24hour format | |
3200 | hour += 12; | |
3201 | } | |
3202 | //else: either already in 24h format or no translation needed | |
3203 | ||
3204 | // set the time | |
3205 | if ( haveHour ) | |
3206 | { | |
5f287370 | 3207 | tm.hour = hour; |
f0f951fa VZ |
3208 | } |
3209 | ||
3210 | if ( haveMin ) | |
3211 | { | |
3212 | tm.min = min; | |
3213 | } | |
3214 | ||
3215 | if ( haveSec ) | |
3216 | { | |
3217 | tm.sec = sec; | |
3218 | } | |
3219 | ||
3220 | Set(tm); | |
3221 | ||
88a036ce VZ |
3222 | // finally check that the week day is consistent -- if we had it |
3223 | if ( haveWDay && GetWeekDay() != wday ) | |
3224 | { | |
3225 | wxLogDebug(_T("inconsistsnet week day in wxDateTime::ParseFormat()")); | |
3226 | ||
3227 | return NULL; | |
3228 | } | |
3229 | ||
f0f951fa | 3230 | return input; |
cd0b1709 VZ |
3231 | } |
3232 | ||
3233 | const wxChar *wxDateTime::ParseDateTime(const wxChar *date) | |
3234 | { | |
3235 | wxCHECK_MSG( date, (wxChar *)NULL, _T("NULL pointer in wxDateTime::Parse") ); | |
3236 | ||
de07d200 VZ |
3237 | // Set to current day and hour, so strings like '14:00' becomes today at |
3238 | // 14, not some other random date | |
3239 | wxDateTime dtDate = wxDateTime::Today(); | |
3240 | wxDateTime dtTime = wxDateTime::Today(); | |
cd0b1709 | 3241 | |
de07d200 VZ |
3242 | const wxChar* pchTime; |
3243 | ||
3244 | // Try to parse the beginning of the string as a date | |
3245 | const wxChar* pchDate = dtDate.ParseDate(date); | |
3246 | ||
3247 | // We got a date in the beginning, see if there is a time specified after the date | |
3248 | if ( pchDate ) | |
3249 | { | |
3250 | // Skip spaces, as the ParseTime() function fails on spaces | |
3251 | while ( wxIsspace(*pchDate) ) | |
3252 | pchDate++; | |
3253 | ||
3254 | pchTime = dtTime.ParseTime(pchDate); | |
3255 | } | |
3256 | else // no date in the beginning | |
3257 | { | |
3258 | // check and see if we have a time followed by a date | |
3259 | pchTime = dtTime.ParseTime(date); | |
3260 | if ( pchTime ) | |
3261 | { | |
3262 | while ( wxIsspace(*pchTime) ) | |
3263 | pchTime++; | |
3264 | ||
3265 | pchDate = dtDate.ParseDate(pchTime); | |
3266 | } | |
3267 | } | |
3268 | ||
3269 | // If we have a date specified, set our own data to the same date | |
3270 | if ( !pchDate || !pchTime ) | |
3271 | return NULL; | |
3272 | ||
3273 | Set(dtDate.GetDay(), dtDate.GetMonth(), dtDate.GetYear(), | |
3274 | dtTime.GetHour(), dtTime.GetMinute(), dtTime.GetSecond(), | |
3275 | dtTime.GetMillisecond()); | |
3276 | ||
3277 | // Return endpoint of scan | |
3278 | return pchDate > pchTime ? pchDate : pchTime; | |
cd0b1709 VZ |
3279 | } |
3280 | ||
3281 | const wxChar *wxDateTime::ParseDate(const wxChar *date) | |
3282 | { | |
3283 | // this is a simplified version of ParseDateTime() which understands only | |
3284 | // "today" (for wxDate compatibility) and digits only otherwise (and not | |
3285 | // all esoteric constructions ParseDateTime() knows about) | |
3286 | ||
3287 | wxCHECK_MSG( date, (wxChar *)NULL, _T("NULL pointer in wxDateTime::Parse") ); | |
3288 | ||
3289 | const wxChar *p = date; | |
3290 | while ( wxIsspace(*p) ) | |
3291 | p++; | |
3292 | ||
fd9f9f4c VZ |
3293 | // some special cases |
3294 | static struct | |
cd0b1709 | 3295 | { |
fd9f9f4c VZ |
3296 | const wxChar *str; |
3297 | int dayDiffFromToday; | |
3298 | } literalDates[] = | |
3299 | { | |
3300 | { wxTRANSLATE("today"), 0 }, | |
3301 | { wxTRANSLATE("yesterday"), -1 }, | |
3302 | { wxTRANSLATE("tomorrow"), 1 }, | |
3303 | }; | |
3304 | ||
3305 | for ( size_t n = 0; n < WXSIZEOF(literalDates); n++ ) | |
3306 | { | |
3307 | wxString date = wxGetTranslation(literalDates[n].str); | |
3308 | size_t len = date.length(); | |
3b415ba4 | 3309 | if ( wxStrlen(p) >= len && (wxString(p, len).CmpNoCase(date) == 0) ) |
fd9f9f4c VZ |
3310 | { |
3311 | // nothing can follow this, so stop here | |
3312 | p += len; | |
cd0b1709 | 3313 | |
fd9f9f4c VZ |
3314 | int dayDiffFromToday = literalDates[n].dayDiffFromToday; |
3315 | *this = Today(); | |
3316 | if ( dayDiffFromToday ) | |
3317 | { | |
3318 | *this += wxDateSpan::Days(dayDiffFromToday); | |
3319 | } | |
cd0b1709 | 3320 | |
fd9f9f4c VZ |
3321 | return p; |
3322 | } | |
cd0b1709 VZ |
3323 | } |
3324 | ||
3ca6a5f0 BP |
3325 | // We try to guess what we have here: for each new (numeric) token, we |
3326 | // determine if it can be a month, day or a year. Of course, there is an | |
3327 | // ambiguity as some numbers may be days as well as months, so we also | |
3328 | // have the ability to back track. | |
3329 | ||
cd0b1709 VZ |
3330 | // what do we have? |
3331 | bool haveDay = FALSE, // the months day? | |
3332 | haveWDay = FALSE, // the day of week? | |
3333 | haveMon = FALSE, // the month? | |
3334 | haveYear = FALSE; // the year? | |
3335 | ||
3336 | // and the value of the items we have (init them to get rid of warnings) | |
3337 | WeekDay wday = Inv_WeekDay; | |
3338 | wxDateTime_t day = 0; | |
3339 | wxDateTime::Month mon = Inv_Month; | |
3340 | int year = 0; | |
3341 | ||
3342 | // tokenize the string | |
f6bcfd97 | 3343 | size_t nPosCur = 0; |
62ae2780 | 3344 | static const wxChar *dateDelimiters = _T(".,/-\t\r\n "); |
f6bcfd97 | 3345 | wxStringTokenizer tok(p, dateDelimiters); |
cd0b1709 VZ |
3346 | while ( tok.HasMoreTokens() ) |
3347 | { | |
3348 | wxString token = tok.GetNextToken(); | |
3ca6a5f0 BP |
3349 | if ( !token ) |
3350 | continue; | |
cd0b1709 VZ |
3351 | |
3352 | // is it a number? | |
3353 | unsigned long val; | |
fde5a86b | 3354 | if ( token.ToULong(&val) ) |
cd0b1709 VZ |
3355 | { |
3356 | // guess what this number is | |
3357 | ||
3358 | bool isDay = FALSE, | |
3359 | isMonth = FALSE, | |
3ca6a5f0 BP |
3360 | isYear = FALSE; |
3361 | ||
3362 | if ( !haveMon && val > 0 && val <= 12 ) | |
cd0b1709 | 3363 | { |
3ca6a5f0 BP |
3364 | // assume it is month |
3365 | isMonth = TRUE; | |
3366 | } | |
3367 | else // not the month | |
3368 | { | |
560e2916 | 3369 | if ( haveDay ) |
cd0b1709 | 3370 | { |
560e2916 | 3371 | // this can only be the year |
3ca6a5f0 | 3372 | isYear = TRUE; |
cd0b1709 | 3373 | } |
560e2916 | 3374 | else // may be either day or year |
cd0b1709 | 3375 | { |
560e2916 VZ |
3376 | wxDateTime_t maxDays = haveMon |
3377 | ? GetNumOfDaysInMonth(haveYear ? year : Inv_Year, mon) | |
3378 | : 31; | |
3379 | ||
3380 | // can it be day? | |
3381 | if ( (val == 0) || (val > (unsigned long)maxDays) ) | |
3382 | { | |
3383 | // no | |
3384 | isYear = TRUE; | |
3385 | } | |
3386 | else // yes, suppose it's the day | |
3387 | { | |
3388 | isDay = TRUE; | |
3389 | } | |
cd0b1709 VZ |
3390 | } |
3391 | } | |
3392 | ||
cd0b1709 VZ |
3393 | if ( isYear ) |
3394 | { | |
3395 | if ( haveYear ) | |
cd0b1709 | 3396 | break; |
cd0b1709 VZ |
3397 | |
3398 | haveYear = TRUE; | |
3399 | ||
479cd5de | 3400 | year = (wxDateTime_t)val; |
cd0b1709 | 3401 | } |
3ca6a5f0 | 3402 | else if ( isDay ) |
cd0b1709 | 3403 | { |
3ca6a5f0 | 3404 | if ( haveDay ) |
cd0b1709 | 3405 | break; |
cd0b1709 | 3406 | |
3ca6a5f0 | 3407 | haveDay = TRUE; |
cd0b1709 | 3408 | |
3ca6a5f0 | 3409 | day = (wxDateTime_t)val; |
cd0b1709 | 3410 | } |
3ca6a5f0 | 3411 | else if ( isMonth ) |
cd0b1709 | 3412 | { |
3ca6a5f0 | 3413 | haveMon = TRUE; |
cd0b1709 | 3414 | |
3ca6a5f0 | 3415 | mon = (Month)(val - 1); |
cd0b1709 VZ |
3416 | } |
3417 | } | |
3418 | else // not a number | |
3419 | { | |
f6bcfd97 BP |
3420 | // be careful not to overwrite the current mon value |
3421 | Month mon2 = GetMonthFromName(token, Name_Full | Name_Abbr); | |
3422 | if ( mon2 != Inv_Month ) | |
cd0b1709 VZ |
3423 | { |
3424 | // it's a month | |
3425 | if ( haveMon ) | |
3426 | { | |
6411a32c VZ |
3427 | // but we already have a month - maybe we guessed wrong? |
3428 | if ( !haveDay ) | |
3429 | { | |
f5cd9787 | 3430 | // no need to check in month range as always < 12, but |
6411a32c VZ |
3431 | // the days are counted from 1 unlike the months |
3432 | day = (wxDateTime_t)mon + 1; | |
3433 | haveDay = TRUE; | |
3434 | } | |
3435 | else | |
3436 | { | |
3437 | // could possible be the year (doesn't the year come | |
3438 | // before the month in the japanese format?) (FIXME) | |
3439 | break; | |
f5cd9787 | 3440 | } |
cd0b1709 VZ |
3441 | } |
3442 | ||
f6bcfd97 BP |
3443 | mon = mon2; |
3444 | ||
cd0b1709 VZ |
3445 | haveMon = TRUE; |
3446 | } | |
6411a32c | 3447 | else // not a valid month name |
cd0b1709 | 3448 | { |
f0f951fa | 3449 | wday = GetWeekDayFromName(token, Name_Full | Name_Abbr); |
cd0b1709 VZ |
3450 | if ( wday != Inv_WeekDay ) |
3451 | { | |
3452 | // a week day | |
3453 | if ( haveWDay ) | |
3454 | { | |
3455 | break; | |
3456 | } | |
3457 | ||
3458 | haveWDay = TRUE; | |
3459 | } | |
6411a32c | 3460 | else // not a valid weekday name |
cd0b1709 VZ |
3461 | { |
3462 | // try the ordinals | |
3463 | static const wxChar *ordinals[] = | |
3464 | { | |
3465 | wxTRANSLATE("first"), | |
3466 | wxTRANSLATE("second"), | |
3467 | wxTRANSLATE("third"), | |
3468 | wxTRANSLATE("fourth"), | |
3469 | wxTRANSLATE("fifth"), | |
3470 | wxTRANSLATE("sixth"), | |
3471 | wxTRANSLATE("seventh"), | |
3472 | wxTRANSLATE("eighth"), | |
3473 | wxTRANSLATE("ninth"), | |
3474 | wxTRANSLATE("tenth"), | |
3475 | wxTRANSLATE("eleventh"), | |
3476 | wxTRANSLATE("twelfth"), | |
3477 | wxTRANSLATE("thirteenth"), | |
3478 | wxTRANSLATE("fourteenth"), | |
3479 | wxTRANSLATE("fifteenth"), | |
3480 | wxTRANSLATE("sixteenth"), | |
3481 | wxTRANSLATE("seventeenth"), | |
3482 | wxTRANSLATE("eighteenth"), | |
3483 | wxTRANSLATE("nineteenth"), | |
3484 | wxTRANSLATE("twentieth"), | |
3485 | // that's enough - otherwise we'd have problems with | |
6411a32c | 3486 | // composite (or not) ordinals |
cd0b1709 VZ |
3487 | }; |
3488 | ||
3489 | size_t n; | |
3490 | for ( n = 0; n < WXSIZEOF(ordinals); n++ ) | |
3491 | { | |
3492 | if ( token.CmpNoCase(ordinals[n]) == 0 ) | |
3493 | { | |
3494 | break; | |
3495 | } | |
3496 | } | |
3497 | ||
3498 | if ( n == WXSIZEOF(ordinals) ) | |
3499 | { | |
3500 | // stop here - something unknown | |
3501 | break; | |
3502 | } | |
3503 | ||
3504 | // it's a day | |
3505 | if ( haveDay ) | |
3506 | { | |
3507 | // don't try anything here (as in case of numeric day | |
3508 | // above) - the symbolic day spec should always | |
3509 | // precede the month/year | |
3510 | break; | |
3511 | } | |
3512 | ||
3513 | haveDay = TRUE; | |
3514 | ||
33ac7e6f | 3515 | day = (wxDateTime_t)(n + 1); |
cd0b1709 VZ |
3516 | } |
3517 | } | |
3518 | } | |
f6bcfd97 BP |
3519 | |
3520 | nPosCur = tok.GetPosition(); | |
cd0b1709 VZ |
3521 | } |
3522 | ||
3523 | // either no more tokens or the scan was stopped by something we couldn't | |
3524 | // parse - in any case, see if we can construct a date from what we have | |
3525 | if ( !haveDay && !haveWDay ) | |
3526 | { | |
f6bcfd97 | 3527 | wxLogDebug(_T("ParseDate: no day, no weekday hence no date.")); |
cd0b1709 VZ |
3528 | |
3529 | return (wxChar *)NULL; | |
3530 | } | |
3531 | ||
3532 | if ( haveWDay && (haveMon || haveYear || haveDay) && | |
f6bcfd97 | 3533 | !(haveDay && haveMon && haveYear) ) |
cd0b1709 VZ |
3534 | { |
3535 | // without adjectives (which we don't support here) the week day only | |
3536 | // makes sense completely separately or with the full date | |
3537 | // specification (what would "Wed 1999" mean?) | |
3538 | return (wxChar *)NULL; | |
3539 | } | |
3540 | ||
f6bcfd97 BP |
3541 | if ( !haveWDay && haveYear && !(haveDay && haveMon) ) |
3542 | { | |
3543 | // may be we have month and day instead of day and year? | |
3544 | if ( haveDay && !haveMon ) | |
3545 | { | |
3546 | if ( day <= 12 ) | |
3547 | { | |
3548 | // exchange day and month | |
3549 | mon = (wxDateTime::Month)(day - 1); | |
3550 | ||
3551 | // we're in the current year then | |
196be0f1 | 3552 | if ( (year > 0) && (year <= (int)GetNumOfDaysInMonth(Inv_Year, mon)) ) |
f6bcfd97 BP |
3553 | { |
3554 | day = year; | |
3555 | ||
3556 | haveMon = TRUE; | |
3557 | haveYear = FALSE; | |
3558 | } | |
3559 | //else: no, can't exchange, leave haveMon == FALSE | |
3560 | } | |
3561 | } | |
3562 | ||
3563 | if ( !haveMon ) | |
3564 | { | |
3565 | // if we give the year, month and day must be given too | |
3566 | wxLogDebug(_T("ParseDate: day and month should be specified if year is.")); | |
3567 | ||
3568 | return (wxChar *)NULL; | |
3569 | } | |
3570 | } | |
3571 | ||
cd0b1709 VZ |
3572 | if ( !haveMon ) |
3573 | { | |
3574 | mon = GetCurrentMonth(); | |
3575 | } | |
3576 | ||
3577 | if ( !haveYear ) | |
3578 | { | |
3579 | year = GetCurrentYear(); | |
3580 | } | |
3581 | ||
3582 | if ( haveDay ) | |
3583 | { | |
3584 | Set(day, mon, year); | |
3585 | ||
3586 | if ( haveWDay ) | |
3587 | { | |
3588 | // check that it is really the same | |
3589 | if ( GetWeekDay() != wday ) | |
3590 | { | |
3591 | // inconsistency detected | |
f6bcfd97 BP |
3592 | wxLogDebug(_T("ParseDate: inconsistent day/weekday.")); |
3593 | ||
cd0b1709 VZ |
3594 | return (wxChar *)NULL; |
3595 | } | |
3596 | } | |
3597 | } | |
3598 | else // haveWDay | |
3599 | { | |
3600 | *this = Today(); | |
3601 | ||
3602 | SetToWeekDayInSameWeek(wday); | |
3603 | } | |
3604 | ||
f6bcfd97 BP |
3605 | // return the pointer to the first unparsed char |
3606 | p += nPosCur; | |
3607 | if ( nPosCur && wxStrchr(dateDelimiters, *(p - 1)) ) | |
3608 | { | |
3609 | // if we couldn't parse the token after the delimiter, put back the | |
3610 | // delimiter as well | |
3611 | p--; | |
3612 | } | |
3613 | ||
3614 | return p; | |
cd0b1709 VZ |
3615 | } |
3616 | ||
3617 | const wxChar *wxDateTime::ParseTime(const wxChar *time) | |
3618 | { | |
3619 | wxCHECK_MSG( time, (wxChar *)NULL, _T("NULL pointer in wxDateTime::Parse") ); | |
3620 | ||
f0f951fa VZ |
3621 | // first try some extra things |
3622 | static const struct | |
3623 | { | |
3624 | const wxChar *name; | |
3625 | wxDateTime_t hour; | |
3626 | } stdTimes[] = | |
3627 | { | |
3628 | { wxTRANSLATE("noon"), 12 }, | |
3629 | { wxTRANSLATE("midnight"), 00 }, | |
3630 | // anything else? | |
3631 | }; | |
cd0b1709 | 3632 | |
f0f951fa VZ |
3633 | for ( size_t n = 0; n < WXSIZEOF(stdTimes); n++ ) |
3634 | { | |
3635 | wxString timeString = wxGetTranslation(stdTimes[n].name); | |
3636 | size_t len = timeString.length(); | |
3637 | if ( timeString.CmpNoCase(wxString(time, len)) == 0 ) | |
3638 | { | |
4ded51f2 CE |
3639 | // casts required by DigitalMars |
3640 | Set(stdTimes[n].hour, wxDateTime_t(0), wxDateTime_t(0)); | |
f0f951fa VZ |
3641 | |
3642 | return time + len; | |
3643 | } | |
3644 | } | |
3645 | ||
c7f9a482 VZ |
3646 | // try all time formats we may think about in the order from longest to |
3647 | // shortest | |
3648 | ||
3649 | // 12hour with AM/PM? | |
3650 | const wxChar *result = ParseFormat(time, _T("%I:%M:%S %p")); | |
3651 | ||
f0f951fa VZ |
3652 | if ( !result ) |
3653 | { | |
3654 | // normally, it's the same, but why not try it? | |
3655 | result = ParseFormat(time, _T("%H:%M:%S")); | |
3656 | } | |
3657 | ||
3658 | if ( !result ) | |
3659 | { | |
c7f9a482 VZ |
3660 | // 12hour with AM/PM but without seconds? |
3661 | result = ParseFormat(time, _T("%I:%M %p")); | |
f0f951fa VZ |
3662 | } |
3663 | ||
3664 | if ( !result ) | |
3665 | { | |
3666 | // without seconds? | |
3667 | result = ParseFormat(time, _T("%H:%M")); | |
3668 | } | |
3669 | ||
3670 | if ( !result ) | |
3671 | { | |
c7f9a482 VZ |
3672 | // just the hour and AM/PM? |
3673 | result = ParseFormat(time, _T("%I %p")); | |
f0f951fa VZ |
3674 | } |
3675 | ||
3676 | if ( !result ) | |
3677 | { | |
3678 | // just the hour? | |
3679 | result = ParseFormat(time, _T("%H")); | |
3680 | } | |
3681 | ||
3682 | if ( !result ) | |
3683 | { | |
c7f9a482 VZ |
3684 | // parse the standard format: normally it is one of the formats above |
3685 | // but it may be set to something completely different by the user | |
3686 | result = ParseFormat(time, _T("%X")); | |
f0f951fa VZ |
3687 | } |
3688 | ||
3689 | // TODO: parse timezones | |
3690 | ||
3691 | return result; | |
cd0b1709 VZ |
3692 | } |
3693 | ||
4f6aed9c VZ |
3694 | // ---------------------------------------------------------------------------- |
3695 | // Workdays and holidays support | |
3696 | // ---------------------------------------------------------------------------- | |
3697 | ||
3698 | bool wxDateTime::IsWorkDay(Country WXUNUSED(country)) const | |
3699 | { | |
3700 | return !wxDateTimeHolidayAuthority::IsHoliday(*this); | |
3701 | } | |
3702 | ||
fcc3d7cb VZ |
3703 | // ============================================================================ |
3704 | // wxTimeSpan | |
3705 | // ============================================================================ | |
3706 | ||
033400eb VZ |
3707 | // this enum is only used in wxTimeSpan::Format() below but we can't declare |
3708 | // it locally to the method as it provokes an internal compiler error in egcs | |
3709 | // 2.91.60 when building with -O2 | |
3710 | enum TimeSpanPart | |
3711 | { | |
3712 | Part_Week, | |
3713 | Part_Day, | |
3714 | Part_Hour, | |
3715 | Part_Min, | |
3716 | Part_Sec, | |
3717 | Part_MSec | |
3718 | }; | |
3719 | ||
e6ec579c VZ |
3720 | // not all strftime(3) format specifiers make sense here because, for example, |
3721 | // a time span doesn't have a year nor a timezone | |
3722 | // | |
3723 | // Here are the ones which are supported (all of them are supported by strftime | |
3724 | // as well): | |
3725 | // %H hour in 24 hour format | |
3726 | // %M minute (00 - 59) | |
3727 | // %S second (00 - 59) | |
3728 | // %% percent sign | |
3729 | // | |
3730 | // Also, for MFC CTimeSpan compatibility, we support | |
3731 | // %D number of days | |
3732 | // | |
3733 | // And, to be better than MFC :-), we also have | |
3734 | // %E number of wEeks | |
3735 | // %l milliseconds (000 - 999) | |
fcc3d7cb VZ |
3736 | wxString wxTimeSpan::Format(const wxChar *format) const |
3737 | { | |
e6ec579c | 3738 | wxCHECK_MSG( format, _T(""), _T("NULL format in wxTimeSpan::Format") ); |
fcc3d7cb VZ |
3739 | |
3740 | wxString str; | |
5b735202 | 3741 | str.Alloc(wxStrlen(format)); |
e6ec579c | 3742 | |
df05cdc5 VZ |
3743 | // Suppose we have wxTimeSpan ts(1 /* hour */, 2 /* min */, 3 /* sec */) |
3744 | // | |
3745 | // Then, of course, ts.Format("%H:%M:%S") must return "01:02:03", but the | |
3746 | // question is what should ts.Format("%S") do? The code here returns "3273" | |
3747 | // in this case (i.e. the total number of seconds, not just seconds % 60) | |
3748 | // because, for me, this call means "give me entire time interval in | |
3749 | // seconds" and not "give me the seconds part of the time interval" | |
3750 | // | |
3751 | // If we agree that it should behave like this, it is clear that the | |
3752 | // interpretation of each format specifier depends on the presence of the | |
3753 | // other format specs in the string: if there was "%H" before "%M", we | |
3754 | // should use GetMinutes() % 60, otherwise just GetMinutes() &c | |
3755 | ||
3756 | // we remember the most important unit found so far | |
033400eb | 3757 | TimeSpanPart partBiggest = Part_MSec; |
df05cdc5 | 3758 | |
f6bcfd97 | 3759 | for ( const wxChar *pch = format; *pch; pch++ ) |
e6ec579c VZ |
3760 | { |
3761 | wxChar ch = *pch; | |
3762 | ||
f6bcfd97 | 3763 | if ( ch == _T('%') ) |
e6ec579c | 3764 | { |
df05cdc5 VZ |
3765 | // the start of the format specification of the printf() below |
3766 | wxString fmtPrefix = _T('%'); | |
3767 | ||
3768 | // the number | |
3769 | long n; | |
e6ec579c | 3770 | |
f6bcfd97 | 3771 | ch = *++pch; // get the format spec char |
e6ec579c VZ |
3772 | switch ( ch ) |
3773 | { | |
3774 | default: | |
3775 | wxFAIL_MSG( _T("invalid format character") ); | |
3776 | // fall through | |
3777 | ||
f6bcfd97 | 3778 | case _T('%'): |
df05cdc5 VZ |
3779 | str += ch; |
3780 | ||
3781 | // skip the part below switch | |
3782 | continue; | |
e6ec579c | 3783 | |
f6bcfd97 | 3784 | case _T('D'): |
df05cdc5 VZ |
3785 | n = GetDays(); |
3786 | if ( partBiggest < Part_Day ) | |
3787 | { | |
3788 | n %= DAYS_PER_WEEK; | |
3789 | } | |
3790 | else | |
3791 | { | |
3792 | partBiggest = Part_Day; | |
3793 | } | |
e6ec579c VZ |
3794 | break; |
3795 | ||
f6bcfd97 | 3796 | case _T('E'): |
df05cdc5 VZ |
3797 | partBiggest = Part_Week; |
3798 | n = GetWeeks(); | |
e6ec579c VZ |
3799 | break; |
3800 | ||
f6bcfd97 | 3801 | case _T('H'): |
df05cdc5 VZ |
3802 | n = GetHours(); |
3803 | if ( partBiggest < Part_Hour ) | |
3804 | { | |
3805 | n %= HOURS_PER_DAY; | |
3806 | } | |
3807 | else | |
3808 | { | |
3809 | partBiggest = Part_Hour; | |
3810 | } | |
3811 | ||
3812 | fmtPrefix += _T("02"); | |
e6ec579c VZ |
3813 | break; |
3814 | ||
f6bcfd97 | 3815 | case _T('l'): |
df05cdc5 VZ |
3816 | n = GetMilliseconds().ToLong(); |
3817 | if ( partBiggest < Part_MSec ) | |
3818 | { | |
3819 | n %= 1000; | |
3820 | } | |
3821 | //else: no need to reset partBiggest to Part_MSec, it is | |
3822 | // the least significant one anyhow | |
3823 | ||
3824 | fmtPrefix += _T("03"); | |
e6ec579c VZ |
3825 | break; |
3826 | ||
f6bcfd97 | 3827 | case _T('M'): |
df05cdc5 VZ |
3828 | n = GetMinutes(); |
3829 | if ( partBiggest < Part_Min ) | |
3830 | { | |
3831 | n %= MIN_PER_HOUR; | |
3832 | } | |
3833 | else | |
3834 | { | |
3835 | partBiggest = Part_Min; | |
3836 | } | |
3837 | ||
3838 | fmtPrefix += _T("02"); | |
e6ec579c VZ |
3839 | break; |
3840 | ||
f6bcfd97 | 3841 | case _T('S'): |
df05cdc5 VZ |
3842 | n = GetSeconds().ToLong(); |
3843 | if ( partBiggest < Part_Sec ) | |
3844 | { | |
3845 | n %= SEC_PER_MIN; | |
3846 | } | |
3847 | else | |
3848 | { | |
3849 | partBiggest = Part_Sec; | |
3850 | } | |
3851 | ||
3852 | fmtPrefix += _T("02"); | |
e6ec579c VZ |
3853 | break; |
3854 | } | |
3855 | ||
df05cdc5 VZ |
3856 | str += wxString::Format(fmtPrefix + _T("ld"), n); |
3857 | } | |
3858 | else | |
3859 | { | |
3860 | // normal character, just copy | |
3861 | str += ch; | |
e6ec579c | 3862 | } |
e6ec579c | 3863 | } |
fcc3d7cb VZ |
3864 | |
3865 | return str; | |
3866 | } | |
4f6aed9c VZ |
3867 | |
3868 | // ============================================================================ | |
3869 | // wxDateTimeHolidayAuthority and related classes | |
3870 | // ============================================================================ | |
3871 | ||
3872 | #include "wx/arrimpl.cpp" | |
3873 | ||
f6bcfd97 | 3874 | WX_DEFINE_OBJARRAY(wxDateTimeArray); |
4f6aed9c VZ |
3875 | |
3876 | static int wxCMPFUNC_CONV | |
3877 | wxDateTimeCompareFunc(wxDateTime **first, wxDateTime **second) | |
3878 | { | |
3879 | wxDateTime dt1 = **first, | |
3880 | dt2 = **second; | |
3881 | ||
3882 | return dt1 == dt2 ? 0 : dt1 < dt2 ? -1 : +1; | |
3883 | } | |
3884 | ||
3885 | // ---------------------------------------------------------------------------- | |
3886 | // wxDateTimeHolidayAuthority | |
3887 | // ---------------------------------------------------------------------------- | |
3888 | ||
3889 | wxHolidayAuthoritiesArray wxDateTimeHolidayAuthority::ms_authorities; | |
3890 | ||
3891 | /* static */ | |
3892 | bool wxDateTimeHolidayAuthority::IsHoliday(const wxDateTime& dt) | |
3893 | { | |
df5168c4 | 3894 | size_t count = ms_authorities.size(); |
4f6aed9c VZ |
3895 | for ( size_t n = 0; n < count; n++ ) |
3896 | { | |
3897 | if ( ms_authorities[n]->DoIsHoliday(dt) ) | |
3898 | { | |
3899 | return TRUE; | |
3900 | } | |
3901 | } | |
3902 | ||
3903 | return FALSE; | |
3904 | } | |
3905 | ||
3906 | /* static */ | |
3907 | size_t | |
3908 | wxDateTimeHolidayAuthority::GetHolidaysInRange(const wxDateTime& dtStart, | |
3909 | const wxDateTime& dtEnd, | |
3910 | wxDateTimeArray& holidays) | |
3911 | { | |
3912 | wxDateTimeArray hol; | |
3913 | ||
df5168c4 | 3914 | holidays.Clear(); |
4f6aed9c | 3915 | |
df5168c4 | 3916 | size_t count = ms_authorities.size(); |
6dc6fda6 | 3917 | for ( size_t nAuth = 0; nAuth < count; nAuth++ ) |
4f6aed9c | 3918 | { |
6dc6fda6 | 3919 | ms_authorities[nAuth]->DoGetHolidaysInRange(dtStart, dtEnd, hol); |
4f6aed9c VZ |
3920 | |
3921 | WX_APPEND_ARRAY(holidays, hol); | |
3922 | } | |
3923 | ||
3924 | holidays.Sort(wxDateTimeCompareFunc); | |
3925 | ||
df5168c4 | 3926 | return holidays.size(); |
4f6aed9c VZ |
3927 | } |
3928 | ||
3929 | /* static */ | |
3930 | void wxDateTimeHolidayAuthority::ClearAllAuthorities() | |
3931 | { | |
3932 | WX_CLEAR_ARRAY(ms_authorities); | |
3933 | } | |
3934 | ||
3935 | /* static */ | |
3936 | void wxDateTimeHolidayAuthority::AddAuthority(wxDateTimeHolidayAuthority *auth) | |
3937 | { | |
df5168c4 | 3938 | ms_authorities.push_back(auth); |
4f6aed9c VZ |
3939 | } |
3940 | ||
30e671a5 VZ |
3941 | wxDateTimeHolidayAuthority::~wxDateTimeHolidayAuthority() |
3942 | { | |
3943 | // nothing to do here | |
3944 | } | |
3945 | ||
4f6aed9c VZ |
3946 | // ---------------------------------------------------------------------------- |
3947 | // wxDateTimeWorkDays | |
3948 | // ---------------------------------------------------------------------------- | |
3949 | ||
3950 | bool wxDateTimeWorkDays::DoIsHoliday(const wxDateTime& dt) const | |
3951 | { | |
3952 | wxDateTime::WeekDay wd = dt.GetWeekDay(); | |
3953 | ||
3954 | return (wd == wxDateTime::Sun) || (wd == wxDateTime::Sat); | |
3955 | } | |
3956 | ||
3957 | size_t wxDateTimeWorkDays::DoGetHolidaysInRange(const wxDateTime& dtStart, | |
3958 | const wxDateTime& dtEnd, | |
3959 | wxDateTimeArray& holidays) const | |
3960 | { | |
3961 | if ( dtStart > dtEnd ) | |
3962 | { | |
3963 | wxFAIL_MSG( _T("invalid date range in GetHolidaysInRange") ); | |
3964 | ||
3965 | return 0u; | |
3966 | } | |
3967 | ||
3968 | holidays.Empty(); | |
3969 | ||
3970 | // instead of checking all days, start with the first Sat after dtStart and | |
3971 | // end with the last Sun before dtEnd | |
3972 | wxDateTime dtSatFirst = dtStart.GetNextWeekDay(wxDateTime::Sat), | |
3973 | dtSatLast = dtEnd.GetPrevWeekDay(wxDateTime::Sat), | |
3974 | dtSunFirst = dtStart.GetNextWeekDay(wxDateTime::Sun), | |
3975 | dtSunLast = dtEnd.GetPrevWeekDay(wxDateTime::Sun), | |
3976 | dt; | |
3977 | ||
3978 | for ( dt = dtSatFirst; dt <= dtSatLast; dt += wxDateSpan::Week() ) | |
3979 | { | |
3980 | holidays.Add(dt); | |
3981 | } | |
3982 | ||
3983 | for ( dt = dtSunFirst; dt <= dtSunLast; dt += wxDateSpan::Week() ) | |
3984 | { | |
3985 | holidays.Add(dt); | |
3986 | } | |
3987 | ||
3988 | return holidays.GetCount(); | |
3989 | } | |
3e0b743f | 3990 | |
1e6feb95 | 3991 | #endif // wxUSE_DATETIME |