| 1 | /////////////////////////////////////////////////////////////////////////////// |
| 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: $Id$ |
| 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 | // |
| 16 | // Licence: wxWindows license |
| 17 | /////////////////////////////////////////////////////////////////////////////// |
| 18 | |
| 19 | /* |
| 20 | * Implementation notes: |
| 21 | * |
| 22 | * 1. the time is stored as a 64bit integer containing the signed number of |
| 23 | * milliseconds since Jan 1. 1970 (the Unix Epoch) - so it is always |
| 24 | * expressed in GMT. |
| 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 | * |
| 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. |
| 45 | */ |
| 46 | |
| 47 | // ============================================================================ |
| 48 | // declarations |
| 49 | // ============================================================================ |
| 50 | |
| 51 | // ---------------------------------------------------------------------------- |
| 52 | // headers |
| 53 | // ---------------------------------------------------------------------------- |
| 54 | |
| 55 | #ifdef __GNUG__ |
| 56 | #pragma implementation "datetime.h" |
| 57 | #endif |
| 58 | |
| 59 | // For compilers that support precompilation, includes "wx.h". |
| 60 | #include "wx/wxprec.h" |
| 61 | |
| 62 | #ifdef __BORLANDC__ |
| 63 | #pragma hdrstop |
| 64 | #endif |
| 65 | |
| 66 | #if !defined(wxUSE_DATETIME) || wxUSE_DATETIME |
| 67 | |
| 68 | #ifndef WX_PRECOMP |
| 69 | #include "wx/string.h" |
| 70 | #include "wx/log.h" |
| 71 | #endif // WX_PRECOMP |
| 72 | |
| 73 | #include "wx/intl.h" |
| 74 | #include "wx/thread.h" |
| 75 | #include "wx/tokenzr.h" |
| 76 | #include "wx/module.h" |
| 77 | |
| 78 | #define wxDEFINE_TIME_CONSTANTS // before including datetime.h |
| 79 | |
| 80 | #include <ctype.h> |
| 81 | |
| 82 | #include "wx/datetime.h" |
| 83 | #include "wx/timer.h" // for wxGetLocalTimeMillis() |
| 84 | |
| 85 | // ---------------------------------------------------------------------------- |
| 86 | // conditional compilation |
| 87 | // ---------------------------------------------------------------------------- |
| 88 | |
| 89 | #if defined(HAVE_STRPTIME) && defined(__LINUX__) |
| 90 | // glibc 2.0.7 strptime() is broken - the following snippet causes it to |
| 91 | // crash (instead of just failing): |
| 92 | // |
| 93 | // strncpy(buf, "Tue Dec 21 20:25:40 1999", 128); |
| 94 | // strptime(buf, "%x", &tm); |
| 95 | // |
| 96 | // so don't use it |
| 97 | #undef HAVE_STRPTIME |
| 98 | #endif // broken strptime() |
| 99 | |
| 100 | #if !defined(WX_TIMEZONE) && !defined(WX_GMTOFF_IN_TM) |
| 101 | #if defined(__BORLANDC__) || defined(__MINGW32__) || defined(__VISAGECPP__) |
| 102 | #define WX_TIMEZONE _timezone |
| 103 | #elif defined(__MWERKS__) |
| 104 | long wxmw_timezone = 28800; |
| 105 | #define WX_TIMEZONE wxmw_timezone |
| 106 | #elif defined(__DJGPP__) |
| 107 | #include <sys/timeb.h> |
| 108 | #include <values.h> |
| 109 | static long wxGetTimeZone() |
| 110 | { |
| 111 | static long timezone = MAXLONG; // invalid timezone |
| 112 | if (timezone == MAXLONG) |
| 113 | { |
| 114 | struct timeb tb; |
| 115 | ftime(&tb); |
| 116 | timezone = tb.timezone; |
| 117 | } |
| 118 | return timezone; |
| 119 | } |
| 120 | #define WX_TIMEZONE wxGetTimeZone() |
| 121 | #elif defined(__DARWIN__) |
| 122 | #define WX_GMTOFF_IN_TM |
| 123 | #else // unknown platform - try timezone |
| 124 | #define WX_TIMEZONE timezone |
| 125 | #endif |
| 126 | #endif // !WX_TIMEZONE && !WX_GMTOFF_IN_TM |
| 127 | |
| 128 | // ---------------------------------------------------------------------------- |
| 129 | // macros |
| 130 | // ---------------------------------------------------------------------------- |
| 131 | |
| 132 | // debugging helper: just a convenient replacement of wxCHECK() |
| 133 | #define wxDATETIME_CHECK(expr, msg) \ |
| 134 | if ( !(expr) ) \ |
| 135 | { \ |
| 136 | wxFAIL_MSG(msg); \ |
| 137 | *this = wxInvalidDateTime; \ |
| 138 | return *this; \ |
| 139 | } |
| 140 | |
| 141 | // ---------------------------------------------------------------------------- |
| 142 | // private classes |
| 143 | // ---------------------------------------------------------------------------- |
| 144 | |
| 145 | class wxDateTimeHolidaysModule : public wxModule |
| 146 | { |
| 147 | public: |
| 148 | virtual bool OnInit() |
| 149 | { |
| 150 | wxDateTimeHolidayAuthority::AddAuthority(new wxDateTimeWorkDays); |
| 151 | |
| 152 | return TRUE; |
| 153 | } |
| 154 | |
| 155 | virtual void OnExit() |
| 156 | { |
| 157 | wxDateTimeHolidayAuthority::ClearAllAuthorities(); |
| 158 | wxDateTimeHolidayAuthority::ms_authorities.Clear(); |
| 159 | } |
| 160 | |
| 161 | private: |
| 162 | DECLARE_DYNAMIC_CLASS(wxDateTimeHolidaysModule) |
| 163 | }; |
| 164 | |
| 165 | IMPLEMENT_DYNAMIC_CLASS(wxDateTimeHolidaysModule, wxModule) |
| 166 | |
| 167 | // ---------------------------------------------------------------------------- |
| 168 | // constants |
| 169 | // ---------------------------------------------------------------------------- |
| 170 | |
| 171 | // some trivial ones |
| 172 | static const int MONTHS_IN_YEAR = 12; |
| 173 | |
| 174 | static const int SEC_PER_MIN = 60; |
| 175 | |
| 176 | static const int MIN_PER_HOUR = 60; |
| 177 | |
| 178 | static const int HOURS_PER_DAY = 24; |
| 179 | |
| 180 | static const long SECONDS_PER_DAY = 86400l; |
| 181 | |
| 182 | static const int DAYS_PER_WEEK = 7; |
| 183 | |
| 184 | static const long MILLISECONDS_PER_DAY = 86400000l; |
| 185 | |
| 186 | // this is the integral part of JDN of the midnight of Jan 1, 1970 |
| 187 | // (i.e. JDN(Jan 1, 1970) = 2440587.5) |
| 188 | static const long EPOCH_JDN = 2440587l; |
| 189 | |
| 190 | // the date of JDN -0.5 (as we don't work with fractional parts, this is the |
| 191 | // reference date for us) is Nov 24, 4714BC |
| 192 | static const int JDN_0_YEAR = -4713; |
| 193 | static const int JDN_0_MONTH = wxDateTime::Nov; |
| 194 | static const int JDN_0_DAY = 24; |
| 195 | |
| 196 | // the constants used for JDN calculations |
| 197 | static const long JDN_OFFSET = 32046l; |
| 198 | static const long DAYS_PER_5_MONTHS = 153l; |
| 199 | static const long DAYS_PER_4_YEARS = 1461l; |
| 200 | static const long DAYS_PER_400_YEARS = 146097l; |
| 201 | |
| 202 | // this array contains the cumulated number of days in all previous months for |
| 203 | // normal and leap years |
| 204 | static const wxDateTime::wxDateTime_t gs_cumulatedDays[2][MONTHS_IN_YEAR] = |
| 205 | { |
| 206 | { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 }, |
| 207 | { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335 } |
| 208 | }; |
| 209 | |
| 210 | // ---------------------------------------------------------------------------- |
| 211 | // global data |
| 212 | // ---------------------------------------------------------------------------- |
| 213 | |
| 214 | // in the fine tradition of ANSI C we use our equivalent of (time_t)-1 to |
| 215 | // indicate an invalid wxDateTime object |
| 216 | const wxDateTime wxDefaultDateTime; |
| 217 | |
| 218 | wxDateTime::Country wxDateTime::ms_country = wxDateTime::Country_Unknown; |
| 219 | |
| 220 | // ---------------------------------------------------------------------------- |
| 221 | // private globals |
| 222 | // ---------------------------------------------------------------------------- |
| 223 | |
| 224 | // a critical section is needed to protect GetTimeZone() static |
| 225 | // variable in MT case |
| 226 | #if wxUSE_THREADS |
| 227 | static wxCriticalSection gs_critsectTimezone; |
| 228 | #endif // wxUSE_THREADS |
| 229 | |
| 230 | // ---------------------------------------------------------------------------- |
| 231 | // private functions |
| 232 | // ---------------------------------------------------------------------------- |
| 233 | |
| 234 | // debugger helper: shows what the date really is |
| 235 | #ifdef __WXDEBUG__ |
| 236 | extern const wxChar *wxDumpDate(const wxDateTime* dt) |
| 237 | { |
| 238 | static wxChar buf[128]; |
| 239 | |
| 240 | wxStrcpy(buf, dt->Format(_T("%Y-%m-%d (%a) %H:%M:%S"))); |
| 241 | |
| 242 | return buf; |
| 243 | } |
| 244 | #endif // Debug |
| 245 | |
| 246 | // get the number of days in the given month of the given year |
| 247 | static inline |
| 248 | wxDateTime::wxDateTime_t GetNumOfDaysInMonth(int year, wxDateTime::Month month) |
| 249 | { |
| 250 | // the number of days in month in Julian/Gregorian calendar: the first line |
| 251 | // is for normal years, the second one is for the leap ones |
| 252 | static wxDateTime::wxDateTime_t daysInMonth[2][MONTHS_IN_YEAR] = |
| 253 | { |
| 254 | { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }, |
| 255 | { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 } |
| 256 | }; |
| 257 | |
| 258 | return daysInMonth[wxDateTime::IsLeapYear(year)][month]; |
| 259 | } |
| 260 | |
| 261 | // ensure that the timezone variable is set by calling localtime |
| 262 | static int GetTimeZone() |
| 263 | { |
| 264 | // set to TRUE when the timezone is set |
| 265 | static bool s_timezoneSet = FALSE; |
| 266 | #ifdef WX_GMTOFF_IN_TM |
| 267 | static long gmtoffset = LONG_MAX; // invalid timezone |
| 268 | #endif |
| 269 | |
| 270 | wxCRIT_SECT_LOCKER(lock, gs_critsectTimezone); |
| 271 | |
| 272 | if ( !s_timezoneSet ) |
| 273 | { |
| 274 | // just call localtime() instead of figuring out whether this system |
| 275 | // supports tzset(), _tzset() or something else |
| 276 | time_t t = 0; |
| 277 | struct tm *tm; |
| 278 | |
| 279 | tm = localtime(&t); |
| 280 | s_timezoneSet = TRUE; |
| 281 | #ifdef WX_GMTOFF_IN_TM |
| 282 | gmtoffset = tm->tm_gmtoff; |
| 283 | #endif |
| 284 | } |
| 285 | |
| 286 | #ifdef WX_GMTOFF_IN_TM |
| 287 | return (int)gmtoffset; |
| 288 | #else |
| 289 | return (int)WX_TIMEZONE; |
| 290 | #endif |
| 291 | } |
| 292 | |
| 293 | // return the integral part of the JDN for the midnight of the given date (to |
| 294 | // get the real JDN you need to add 0.5, this is, in fact, JDN of the |
| 295 | // noon of the previous day) |
| 296 | static long GetTruncatedJDN(wxDateTime::wxDateTime_t day, |
| 297 | wxDateTime::Month mon, |
| 298 | int year) |
| 299 | { |
| 300 | // CREDIT: code below is by Scott E. Lee (but bugs are mine) |
| 301 | |
| 302 | // check the date validity |
| 303 | wxASSERT_MSG( |
| 304 | (year > JDN_0_YEAR) || |
| 305 | ((year == JDN_0_YEAR) && (mon > JDN_0_MONTH)) || |
| 306 | ((year == JDN_0_YEAR) && (mon == JDN_0_MONTH) && (day >= JDN_0_DAY)), |
| 307 | _T("date out of range - can't convert to JDN") |
| 308 | ); |
| 309 | |
| 310 | // make the year positive to avoid problems with negative numbers division |
| 311 | year += 4800; |
| 312 | |
| 313 | // months are counted from March here |
| 314 | int month; |
| 315 | if ( mon >= wxDateTime::Mar ) |
| 316 | { |
| 317 | month = mon - 2; |
| 318 | } |
| 319 | else |
| 320 | { |
| 321 | month = mon + 10; |
| 322 | year--; |
| 323 | } |
| 324 | |
| 325 | // now we can simply add all the contributions together |
| 326 | return ((year / 100) * DAYS_PER_400_YEARS) / 4 |
| 327 | + ((year % 100) * DAYS_PER_4_YEARS) / 4 |
| 328 | + (month * DAYS_PER_5_MONTHS + 2) / 5 |
| 329 | + day |
| 330 | - JDN_OFFSET; |
| 331 | } |
| 332 | |
| 333 | // this function is a wrapper around strftime(3) |
| 334 | static wxString CallStrftime(const wxChar *format, const tm* tm) |
| 335 | { |
| 336 | wxChar buf[4096]; |
| 337 | if ( !wxStrftime(buf, WXSIZEOF(buf), format, tm) ) |
| 338 | { |
| 339 | // buffer is too small? |
| 340 | wxFAIL_MSG(_T("strftime() failed")); |
| 341 | } |
| 342 | |
| 343 | return wxString(buf); |
| 344 | } |
| 345 | |
| 346 | // if year and/or month have invalid values, replace them with the current ones |
| 347 | static void ReplaceDefaultYearMonthWithCurrent(int *year, |
| 348 | wxDateTime::Month *month) |
| 349 | { |
| 350 | struct tm *tmNow = NULL; |
| 351 | |
| 352 | if ( *year == wxDateTime::Inv_Year ) |
| 353 | { |
| 354 | tmNow = wxDateTime::GetTmNow(); |
| 355 | |
| 356 | *year = 1900 + tmNow->tm_year; |
| 357 | } |
| 358 | |
| 359 | if ( *month == wxDateTime::Inv_Month ) |
| 360 | { |
| 361 | if ( !tmNow ) |
| 362 | tmNow = wxDateTime::GetTmNow(); |
| 363 | |
| 364 | *month = (wxDateTime::Month)tmNow->tm_mon; |
| 365 | } |
| 366 | } |
| 367 | |
| 368 | // fll the struct tm with default values |
| 369 | static void InitTm(struct tm& tm) |
| 370 | { |
| 371 | // struct tm may have etxra fields (undocumented and with unportable |
| 372 | // names) which, nevertheless, must be set to 0 |
| 373 | memset(&tm, 0, sizeof(struct tm)); |
| 374 | |
| 375 | tm.tm_mday = 1; // mday 0 is invalid |
| 376 | tm.tm_year = 76; // any valid year |
| 377 | tm.tm_isdst = -1; // auto determine |
| 378 | } |
| 379 | |
| 380 | // parsing helpers |
| 381 | // --------------- |
| 382 | |
| 383 | // return the month if the string is a month name or Inv_Month otherwise |
| 384 | static wxDateTime::Month GetMonthFromName(const wxString& name, int flags) |
| 385 | { |
| 386 | wxDateTime::Month mon; |
| 387 | for ( mon = wxDateTime::Jan; mon < wxDateTime::Inv_Month; wxNextMonth(mon) ) |
| 388 | { |
| 389 | // case-insensitive comparison either one of or with both abbreviated |
| 390 | // and not versions |
| 391 | if ( flags & wxDateTime::Name_Full ) |
| 392 | { |
| 393 | if ( name.CmpNoCase(wxDateTime:: |
| 394 | GetMonthName(mon, wxDateTime::Name_Full)) == 0 ) |
| 395 | { |
| 396 | break; |
| 397 | } |
| 398 | } |
| 399 | |
| 400 | if ( flags & wxDateTime::Name_Abbr ) |
| 401 | { |
| 402 | if ( name.CmpNoCase(wxDateTime:: |
| 403 | GetMonthName(mon, wxDateTime::Name_Abbr)) == 0 ) |
| 404 | { |
| 405 | break; |
| 406 | } |
| 407 | } |
| 408 | } |
| 409 | |
| 410 | return mon; |
| 411 | } |
| 412 | |
| 413 | // return the weekday if the string is a weekday name or Inv_WeekDay otherwise |
| 414 | static wxDateTime::WeekDay GetWeekDayFromName(const wxString& name, int flags) |
| 415 | { |
| 416 | wxDateTime::WeekDay wd; |
| 417 | for ( wd = wxDateTime::Sun; wd < wxDateTime::Inv_WeekDay; wxNextWDay(wd) ) |
| 418 | { |
| 419 | // case-insensitive comparison either one of or with both abbreviated |
| 420 | // and not versions |
| 421 | if ( flags & wxDateTime::Name_Full ) |
| 422 | { |
| 423 | if ( name.CmpNoCase(wxDateTime:: |
| 424 | GetWeekDayName(wd, wxDateTime::Name_Full)) == 0 ) |
| 425 | { |
| 426 | break; |
| 427 | } |
| 428 | } |
| 429 | |
| 430 | if ( flags & wxDateTime::Name_Abbr ) |
| 431 | { |
| 432 | if ( name.CmpNoCase(wxDateTime:: |
| 433 | GetWeekDayName(wd, wxDateTime::Name_Abbr)) == 0 ) |
| 434 | { |
| 435 | break; |
| 436 | } |
| 437 | } |
| 438 | } |
| 439 | |
| 440 | return wd; |
| 441 | } |
| 442 | |
| 443 | // scans all digits (but no more than len) and returns the resulting number |
| 444 | static bool GetNumericToken(size_t len, const wxChar*& p, unsigned long *number) |
| 445 | { |
| 446 | size_t n = 1; |
| 447 | wxString s; |
| 448 | while ( wxIsdigit(*p) ) |
| 449 | { |
| 450 | s += *p++; |
| 451 | |
| 452 | if ( len && ++n > len ) |
| 453 | break; |
| 454 | } |
| 455 | |
| 456 | return !!s && s.ToULong(number); |
| 457 | } |
| 458 | |
| 459 | // scans all alphabetic characters and returns the resulting string |
| 460 | static wxString GetAlphaToken(const wxChar*& p) |
| 461 | { |
| 462 | wxString s; |
| 463 | while ( wxIsalpha(*p) ) |
| 464 | { |
| 465 | s += *p++; |
| 466 | } |
| 467 | |
| 468 | return s; |
| 469 | } |
| 470 | |
| 471 | // ============================================================================ |
| 472 | // implementation of wxDateTime |
| 473 | // ============================================================================ |
| 474 | |
| 475 | // ---------------------------------------------------------------------------- |
| 476 | // struct Tm |
| 477 | // ---------------------------------------------------------------------------- |
| 478 | |
| 479 | wxDateTime::Tm::Tm() |
| 480 | { |
| 481 | year = (wxDateTime_t)wxDateTime::Inv_Year; |
| 482 | mon = wxDateTime::Inv_Month; |
| 483 | mday = 0; |
| 484 | hour = min = sec = msec = 0; |
| 485 | wday = wxDateTime::Inv_WeekDay; |
| 486 | } |
| 487 | |
| 488 | wxDateTime::Tm::Tm(const struct tm& tm, const TimeZone& tz) |
| 489 | : m_tz(tz) |
| 490 | { |
| 491 | msec = 0; |
| 492 | sec = tm.tm_sec; |
| 493 | min = tm.tm_min; |
| 494 | hour = tm.tm_hour; |
| 495 | mday = tm.tm_mday; |
| 496 | mon = (wxDateTime::Month)tm.tm_mon; |
| 497 | year = 1900 + tm.tm_year; |
| 498 | wday = tm.tm_wday; |
| 499 | yday = tm.tm_yday; |
| 500 | } |
| 501 | |
| 502 | bool wxDateTime::Tm::IsValid() const |
| 503 | { |
| 504 | // we allow for the leap seconds, although we don't use them (yet) |
| 505 | return (year != wxDateTime::Inv_Year) && (mon != wxDateTime::Inv_Month) && |
| 506 | (mday <= GetNumOfDaysInMonth(year, mon)) && |
| 507 | (hour < 24) && (min < 60) && (sec < 62) && (msec < 1000); |
| 508 | } |
| 509 | |
| 510 | void wxDateTime::Tm::ComputeWeekDay() |
| 511 | { |
| 512 | // compute the week day from day/month/year: we use the dumbest algorithm |
| 513 | // possible: just compute our JDN and then use the (simple to derive) |
| 514 | // formula: weekday = (JDN + 1.5) % 7 |
| 515 | wday = (wxDateTime::WeekDay)(GetTruncatedJDN(mday, mon, year) + 2) % 7; |
| 516 | } |
| 517 | |
| 518 | void wxDateTime::Tm::AddMonths(int monDiff) |
| 519 | { |
| 520 | // normalize the months field |
| 521 | while ( monDiff < -mon ) |
| 522 | { |
| 523 | year--; |
| 524 | |
| 525 | monDiff += MONTHS_IN_YEAR; |
| 526 | } |
| 527 | |
| 528 | while ( monDiff + mon >= MONTHS_IN_YEAR ) |
| 529 | { |
| 530 | year++; |
| 531 | |
| 532 | monDiff -= MONTHS_IN_YEAR; |
| 533 | } |
| 534 | |
| 535 | mon = (wxDateTime::Month)(mon + monDiff); |
| 536 | |
| 537 | wxASSERT_MSG( mon >= 0 && mon < MONTHS_IN_YEAR, _T("logic error") ); |
| 538 | |
| 539 | // NB: we don't check here that the resulting date is valid, this function |
| 540 | // is private and the caller must check it if needed |
| 541 | } |
| 542 | |
| 543 | void wxDateTime::Tm::AddDays(int dayDiff) |
| 544 | { |
| 545 | // normalize the days field |
| 546 | while ( dayDiff + mday < 1 ) |
| 547 | { |
| 548 | AddMonths(-1); |
| 549 | |
| 550 | dayDiff += GetNumOfDaysInMonth(year, mon); |
| 551 | } |
| 552 | |
| 553 | mday += dayDiff; |
| 554 | while ( mday > GetNumOfDaysInMonth(year, mon) ) |
| 555 | { |
| 556 | mday -= GetNumOfDaysInMonth(year, mon); |
| 557 | |
| 558 | AddMonths(1); |
| 559 | } |
| 560 | |
| 561 | wxASSERT_MSG( mday > 0 && mday <= GetNumOfDaysInMonth(year, mon), |
| 562 | _T("logic error") ); |
| 563 | } |
| 564 | |
| 565 | // ---------------------------------------------------------------------------- |
| 566 | // class TimeZone |
| 567 | // ---------------------------------------------------------------------------- |
| 568 | |
| 569 | wxDateTime::TimeZone::TimeZone(wxDateTime::TZ tz) |
| 570 | { |
| 571 | switch ( tz ) |
| 572 | { |
| 573 | case wxDateTime::Local: |
| 574 | // get the offset from C RTL: it returns the difference GMT-local |
| 575 | // while we want to have the offset _from_ GMT, hence the '-' |
| 576 | m_offset = -GetTimeZone(); |
| 577 | break; |
| 578 | |
| 579 | case wxDateTime::GMT_12: |
| 580 | case wxDateTime::GMT_11: |
| 581 | case wxDateTime::GMT_10: |
| 582 | case wxDateTime::GMT_9: |
| 583 | case wxDateTime::GMT_8: |
| 584 | case wxDateTime::GMT_7: |
| 585 | case wxDateTime::GMT_6: |
| 586 | case wxDateTime::GMT_5: |
| 587 | case wxDateTime::GMT_4: |
| 588 | case wxDateTime::GMT_3: |
| 589 | case wxDateTime::GMT_2: |
| 590 | case wxDateTime::GMT_1: |
| 591 | m_offset = -3600*(wxDateTime::GMT0 - tz); |
| 592 | break; |
| 593 | |
| 594 | case wxDateTime::GMT0: |
| 595 | case wxDateTime::GMT1: |
| 596 | case wxDateTime::GMT2: |
| 597 | case wxDateTime::GMT3: |
| 598 | case wxDateTime::GMT4: |
| 599 | case wxDateTime::GMT5: |
| 600 | case wxDateTime::GMT6: |
| 601 | case wxDateTime::GMT7: |
| 602 | case wxDateTime::GMT8: |
| 603 | case wxDateTime::GMT9: |
| 604 | case wxDateTime::GMT10: |
| 605 | case wxDateTime::GMT11: |
| 606 | case wxDateTime::GMT12: |
| 607 | m_offset = 3600*(tz - wxDateTime::GMT0); |
| 608 | break; |
| 609 | |
| 610 | case wxDateTime::A_CST: |
| 611 | // Central Standard Time in use in Australia = UTC + 9.5 |
| 612 | m_offset = 60l*(9*60 + 30); |
| 613 | break; |
| 614 | |
| 615 | default: |
| 616 | wxFAIL_MSG( _T("unknown time zone") ); |
| 617 | } |
| 618 | } |
| 619 | |
| 620 | // ---------------------------------------------------------------------------- |
| 621 | // static functions |
| 622 | // ---------------------------------------------------------------------------- |
| 623 | |
| 624 | /* static */ |
| 625 | bool wxDateTime::IsLeapYear(int year, wxDateTime::Calendar cal) |
| 626 | { |
| 627 | if ( year == Inv_Year ) |
| 628 | year = GetCurrentYear(); |
| 629 | |
| 630 | if ( cal == Gregorian ) |
| 631 | { |
| 632 | // in Gregorian calendar leap years are those divisible by 4 except |
| 633 | // those divisible by 100 unless they're also divisible by 400 |
| 634 | // (in some countries, like Russia and Greece, additional corrections |
| 635 | // exist, but they won't manifest themselves until 2700) |
| 636 | return (year % 4 == 0) && ((year % 100 != 0) || (year % 400 == 0)); |
| 637 | } |
| 638 | else if ( cal == Julian ) |
| 639 | { |
| 640 | // in Julian calendar the rule is simpler |
| 641 | return year % 4 == 0; |
| 642 | } |
| 643 | else |
| 644 | { |
| 645 | wxFAIL_MSG(_T("unknown calendar")); |
| 646 | |
| 647 | return FALSE; |
| 648 | } |
| 649 | } |
| 650 | |
| 651 | /* static */ |
| 652 | int wxDateTime::GetCentury(int year) |
| 653 | { |
| 654 | return year > 0 ? year / 100 : year / 100 - 1; |
| 655 | } |
| 656 | |
| 657 | /* static */ |
| 658 | int wxDateTime::ConvertYearToBC(int year) |
| 659 | { |
| 660 | // year 0 is BC 1 |
| 661 | return year > 0 ? year : year - 1; |
| 662 | } |
| 663 | |
| 664 | /* static */ |
| 665 | int wxDateTime::GetCurrentYear(wxDateTime::Calendar cal) |
| 666 | { |
| 667 | switch ( cal ) |
| 668 | { |
| 669 | case Gregorian: |
| 670 | return Now().GetYear(); |
| 671 | |
| 672 | case Julian: |
| 673 | wxFAIL_MSG(_T("TODO")); |
| 674 | break; |
| 675 | |
| 676 | default: |
| 677 | wxFAIL_MSG(_T("unsupported calendar")); |
| 678 | break; |
| 679 | } |
| 680 | |
| 681 | return Inv_Year; |
| 682 | } |
| 683 | |
| 684 | /* static */ |
| 685 | wxDateTime::Month wxDateTime::GetCurrentMonth(wxDateTime::Calendar cal) |
| 686 | { |
| 687 | switch ( cal ) |
| 688 | { |
| 689 | case Gregorian: |
| 690 | return Now().GetMonth(); |
| 691 | |
| 692 | case Julian: |
| 693 | wxFAIL_MSG(_T("TODO")); |
| 694 | break; |
| 695 | |
| 696 | default: |
| 697 | wxFAIL_MSG(_T("unsupported calendar")); |
| 698 | break; |
| 699 | } |
| 700 | |
| 701 | return Inv_Month; |
| 702 | } |
| 703 | |
| 704 | /* static */ |
| 705 | wxDateTime::wxDateTime_t wxDateTime::GetNumberOfDays(int year, Calendar cal) |
| 706 | { |
| 707 | if ( year == Inv_Year ) |
| 708 | { |
| 709 | // take the current year if none given |
| 710 | year = GetCurrentYear(); |
| 711 | } |
| 712 | |
| 713 | switch ( cal ) |
| 714 | { |
| 715 | case Gregorian: |
| 716 | case Julian: |
| 717 | return IsLeapYear(year) ? 366 : 365; |
| 718 | |
| 719 | default: |
| 720 | wxFAIL_MSG(_T("unsupported calendar")); |
| 721 | break; |
| 722 | } |
| 723 | |
| 724 | return 0; |
| 725 | } |
| 726 | |
| 727 | /* static */ |
| 728 | wxDateTime::wxDateTime_t wxDateTime::GetNumberOfDays(wxDateTime::Month month, |
| 729 | int year, |
| 730 | wxDateTime::Calendar cal) |
| 731 | { |
| 732 | wxCHECK_MSG( month < MONTHS_IN_YEAR, 0, _T("invalid month") ); |
| 733 | |
| 734 | if ( cal == Gregorian || cal == Julian ) |
| 735 | { |
| 736 | if ( year == Inv_Year ) |
| 737 | { |
| 738 | // take the current year if none given |
| 739 | year = GetCurrentYear(); |
| 740 | } |
| 741 | |
| 742 | return GetNumOfDaysInMonth(year, month); |
| 743 | } |
| 744 | else |
| 745 | { |
| 746 | wxFAIL_MSG(_T("unsupported calendar")); |
| 747 | |
| 748 | return 0; |
| 749 | } |
| 750 | } |
| 751 | |
| 752 | /* static */ |
| 753 | wxString wxDateTime::GetMonthName(wxDateTime::Month month, |
| 754 | wxDateTime::NameFlags flags) |
| 755 | { |
| 756 | wxCHECK_MSG( month != Inv_Month, _T(""), _T("invalid month") ); |
| 757 | |
| 758 | // notice that we must set all the fields to avoid confusing libc (GNU one |
| 759 | // gets confused to a crash if we don't do this) |
| 760 | tm tm; |
| 761 | InitTm(tm); |
| 762 | tm.tm_mon = month; |
| 763 | |
| 764 | return CallStrftime(flags == Name_Abbr ? _T("%b") : _T("%B"), &tm); |
| 765 | } |
| 766 | |
| 767 | /* static */ |
| 768 | wxString wxDateTime::GetWeekDayName(wxDateTime::WeekDay wday, |
| 769 | wxDateTime::NameFlags flags) |
| 770 | { |
| 771 | wxCHECK_MSG( wday != Inv_WeekDay, _T(""), _T("invalid weekday") ); |
| 772 | |
| 773 | // take some arbitrary Sunday |
| 774 | tm tm; |
| 775 | InitTm(tm); |
| 776 | tm.tm_mday = 28; |
| 777 | tm.tm_mon = Nov; |
| 778 | tm.tm_year = 99; |
| 779 | |
| 780 | // and offset it by the number of days needed to get the correct wday |
| 781 | tm.tm_mday += wday; |
| 782 | |
| 783 | // call mktime() to normalize it... |
| 784 | (void)mktime(&tm); |
| 785 | |
| 786 | // ... and call strftime() |
| 787 | return CallStrftime(flags == Name_Abbr ? _T("%a") : _T("%A"), &tm); |
| 788 | } |
| 789 | |
| 790 | /* static */ |
| 791 | void wxDateTime::GetAmPmStrings(wxString *am, wxString *pm) |
| 792 | { |
| 793 | tm tm; |
| 794 | InitTm(tm); |
| 795 | if ( am ) |
| 796 | { |
| 797 | *am = CallStrftime(_T("%p"), &tm); |
| 798 | } |
| 799 | if ( pm ) |
| 800 | { |
| 801 | tm.tm_hour = 13; |
| 802 | *pm = CallStrftime(_T("%p"), &tm); |
| 803 | } |
| 804 | } |
| 805 | |
| 806 | // ---------------------------------------------------------------------------- |
| 807 | // Country stuff: date calculations depend on the country (DST, work days, |
| 808 | // ...), so we need to know which rules to follow. |
| 809 | // ---------------------------------------------------------------------------- |
| 810 | |
| 811 | /* static */ |
| 812 | wxDateTime::Country wxDateTime::GetCountry() |
| 813 | { |
| 814 | // TODO use LOCALE_ICOUNTRY setting under Win32 |
| 815 | |
| 816 | if ( ms_country == Country_Unknown ) |
| 817 | { |
| 818 | // try to guess from the time zone name |
| 819 | time_t t = time(NULL); |
| 820 | struct tm *tm = localtime(&t); |
| 821 | |
| 822 | wxString tz = CallStrftime(_T("%Z"), tm); |
| 823 | if ( tz == _T("WET") || tz == _T("WEST") ) |
| 824 | { |
| 825 | ms_country = UK; |
| 826 | } |
| 827 | else if ( tz == _T("CET") || tz == _T("CEST") ) |
| 828 | { |
| 829 | ms_country = Country_EEC; |
| 830 | } |
| 831 | else if ( tz == _T("MSK") || tz == _T("MSD") ) |
| 832 | { |
| 833 | ms_country = Russia; |
| 834 | } |
| 835 | else if ( tz == _T("AST") || tz == _T("ADT") || |
| 836 | tz == _T("EST") || tz == _T("EDT") || |
| 837 | tz == _T("CST") || tz == _T("CDT") || |
| 838 | tz == _T("MST") || tz == _T("MDT") || |
| 839 | tz == _T("PST") || tz == _T("PDT") ) |
| 840 | { |
| 841 | ms_country = USA; |
| 842 | } |
| 843 | else |
| 844 | { |
| 845 | // well, choose a default one |
| 846 | ms_country = USA; |
| 847 | } |
| 848 | } |
| 849 | |
| 850 | return ms_country; |
| 851 | } |
| 852 | |
| 853 | /* static */ |
| 854 | void wxDateTime::SetCountry(wxDateTime::Country country) |
| 855 | { |
| 856 | ms_country = country; |
| 857 | } |
| 858 | |
| 859 | /* static */ |
| 860 | bool wxDateTime::IsWestEuropeanCountry(Country country) |
| 861 | { |
| 862 | if ( country == Country_Default ) |
| 863 | { |
| 864 | country = GetCountry(); |
| 865 | } |
| 866 | |
| 867 | return (Country_WesternEurope_Start <= country) && |
| 868 | (country <= Country_WesternEurope_End); |
| 869 | } |
| 870 | |
| 871 | // ---------------------------------------------------------------------------- |
| 872 | // DST calculations: we use 3 different rules for the West European countries, |
| 873 | // USA and for the rest of the world. This is undoubtedly false for many |
| 874 | // countries, but I lack the necessary info (and the time to gather it), |
| 875 | // please add the other rules here! |
| 876 | // ---------------------------------------------------------------------------- |
| 877 | |
| 878 | /* static */ |
| 879 | bool wxDateTime::IsDSTApplicable(int year, Country country) |
| 880 | { |
| 881 | if ( year == Inv_Year ) |
| 882 | { |
| 883 | // take the current year if none given |
| 884 | year = GetCurrentYear(); |
| 885 | } |
| 886 | |
| 887 | if ( country == Country_Default ) |
| 888 | { |
| 889 | country = GetCountry(); |
| 890 | } |
| 891 | |
| 892 | switch ( country ) |
| 893 | { |
| 894 | case USA: |
| 895 | case UK: |
| 896 | // DST was first observed in the US and UK during WWI, reused |
| 897 | // during WWII and used again since 1966 |
| 898 | return year >= 1966 || |
| 899 | (year >= 1942 && year <= 1945) || |
| 900 | (year == 1918 || year == 1919); |
| 901 | |
| 902 | default: |
| 903 | // assume that it started after WWII |
| 904 | return year > 1950; |
| 905 | } |
| 906 | } |
| 907 | |
| 908 | /* static */ |
| 909 | wxDateTime wxDateTime::GetBeginDST(int year, Country country) |
| 910 | { |
| 911 | if ( year == Inv_Year ) |
| 912 | { |
| 913 | // take the current year if none given |
| 914 | year = GetCurrentYear(); |
| 915 | } |
| 916 | |
| 917 | if ( country == Country_Default ) |
| 918 | { |
| 919 | country = GetCountry(); |
| 920 | } |
| 921 | |
| 922 | if ( !IsDSTApplicable(year, country) ) |
| 923 | { |
| 924 | return wxInvalidDateTime; |
| 925 | } |
| 926 | |
| 927 | wxDateTime dt; |
| 928 | |
| 929 | if ( IsWestEuropeanCountry(country) || (country == Russia) ) |
| 930 | { |
| 931 | // DST begins at 1 a.m. GMT on the last Sunday of March |
| 932 | if ( !dt.SetToLastWeekDay(Sun, Mar, year) ) |
| 933 | { |
| 934 | // weird... |
| 935 | wxFAIL_MSG( _T("no last Sunday in March?") ); |
| 936 | } |
| 937 | |
| 938 | dt += wxTimeSpan::Hours(1); |
| 939 | |
| 940 | // disable DST tests because it could result in an infinite recursion! |
| 941 | dt.MakeGMT(TRUE); |
| 942 | } |
| 943 | else switch ( country ) |
| 944 | { |
| 945 | case USA: |
| 946 | switch ( year ) |
| 947 | { |
| 948 | case 1918: |
| 949 | case 1919: |
| 950 | // don't know for sure - assume it was in effect all year |
| 951 | |
| 952 | case 1943: |
| 953 | case 1944: |
| 954 | case 1945: |
| 955 | dt.Set(1, Jan, year); |
| 956 | break; |
| 957 | |
| 958 | case 1942: |
| 959 | // DST was installed Feb 2, 1942 by the Congress |
| 960 | dt.Set(2, Feb, year); |
| 961 | break; |
| 962 | |
| 963 | // Oil embargo changed the DST period in the US |
| 964 | case 1974: |
| 965 | dt.Set(6, Jan, 1974); |
| 966 | break; |
| 967 | |
| 968 | case 1975: |
| 969 | dt.Set(23, Feb, 1975); |
| 970 | break; |
| 971 | |
| 972 | default: |
| 973 | // before 1986, DST begun on the last Sunday of April, but |
| 974 | // in 1986 Reagan changed it to begin at 2 a.m. of the |
| 975 | // first Sunday in April |
| 976 | if ( year < 1986 ) |
| 977 | { |
| 978 | if ( !dt.SetToLastWeekDay(Sun, Apr, year) ) |
| 979 | { |
| 980 | // weird... |
| 981 | wxFAIL_MSG( _T("no first Sunday in April?") ); |
| 982 | } |
| 983 | } |
| 984 | else |
| 985 | { |
| 986 | if ( !dt.SetToWeekDay(Sun, 1, Apr, year) ) |
| 987 | { |
| 988 | // weird... |
| 989 | wxFAIL_MSG( _T("no first Sunday in April?") ); |
| 990 | } |
| 991 | } |
| 992 | |
| 993 | dt += wxTimeSpan::Hours(2); |
| 994 | |
| 995 | // TODO what about timezone?? |
| 996 | } |
| 997 | |
| 998 | break; |
| 999 | |
| 1000 | default: |
| 1001 | // assume Mar 30 as the start of the DST for the rest of the world |
| 1002 | // - totally bogus, of course |
| 1003 | dt.Set(30, Mar, year); |
| 1004 | } |
| 1005 | |
| 1006 | return dt; |
| 1007 | } |
| 1008 | |
| 1009 | /* static */ |
| 1010 | wxDateTime wxDateTime::GetEndDST(int year, Country country) |
| 1011 | { |
| 1012 | if ( year == Inv_Year ) |
| 1013 | { |
| 1014 | // take the current year if none given |
| 1015 | year = GetCurrentYear(); |
| 1016 | } |
| 1017 | |
| 1018 | if ( country == Country_Default ) |
| 1019 | { |
| 1020 | country = GetCountry(); |
| 1021 | } |
| 1022 | |
| 1023 | if ( !IsDSTApplicable(year, country) ) |
| 1024 | { |
| 1025 | return wxInvalidDateTime; |
| 1026 | } |
| 1027 | |
| 1028 | wxDateTime dt; |
| 1029 | |
| 1030 | if ( IsWestEuropeanCountry(country) || (country == Russia) ) |
| 1031 | { |
| 1032 | // DST ends at 1 a.m. GMT on the last Sunday of October |
| 1033 | if ( !dt.SetToLastWeekDay(Sun, Oct, year) ) |
| 1034 | { |
| 1035 | // weirder and weirder... |
| 1036 | wxFAIL_MSG( _T("no last Sunday in October?") ); |
| 1037 | } |
| 1038 | |
| 1039 | dt += wxTimeSpan::Hours(1); |
| 1040 | |
| 1041 | // disable DST tests because it could result in an infinite recursion! |
| 1042 | dt.MakeGMT(TRUE); |
| 1043 | } |
| 1044 | else switch ( country ) |
| 1045 | { |
| 1046 | case USA: |
| 1047 | switch ( year ) |
| 1048 | { |
| 1049 | case 1918: |
| 1050 | case 1919: |
| 1051 | // don't know for sure - assume it was in effect all year |
| 1052 | |
| 1053 | case 1943: |
| 1054 | case 1944: |
| 1055 | dt.Set(31, Dec, year); |
| 1056 | break; |
| 1057 | |
| 1058 | case 1945: |
| 1059 | // the time was reset after the end of the WWII |
| 1060 | dt.Set(30, Sep, year); |
| 1061 | break; |
| 1062 | |
| 1063 | default: |
| 1064 | // DST ends at 2 a.m. on the last Sunday of October |
| 1065 | if ( !dt.SetToLastWeekDay(Sun, Oct, year) ) |
| 1066 | { |
| 1067 | // weirder and weirder... |
| 1068 | wxFAIL_MSG( _T("no last Sunday in October?") ); |
| 1069 | } |
| 1070 | |
| 1071 | dt += wxTimeSpan::Hours(2); |
| 1072 | |
| 1073 | // TODO what about timezone?? |
| 1074 | } |
| 1075 | break; |
| 1076 | |
| 1077 | default: |
| 1078 | // assume October 26th as the end of the DST - totally bogus too |
| 1079 | dt.Set(26, Oct, year); |
| 1080 | } |
| 1081 | |
| 1082 | return dt; |
| 1083 | } |
| 1084 | |
| 1085 | // ---------------------------------------------------------------------------- |
| 1086 | // constructors and assignment operators |
| 1087 | // ---------------------------------------------------------------------------- |
| 1088 | |
| 1089 | // return the current time with ms precision |
| 1090 | /* static */ wxDateTime wxDateTime::UNow() |
| 1091 | { |
| 1092 | return wxDateTime(wxGetLocalTimeMillis()); |
| 1093 | } |
| 1094 | |
| 1095 | // the values in the tm structure contain the local time |
| 1096 | wxDateTime& wxDateTime::Set(const struct tm& tm) |
| 1097 | { |
| 1098 | struct tm tm2(tm); |
| 1099 | time_t timet = mktime(&tm2); |
| 1100 | |
| 1101 | if ( timet == (time_t)-1 ) |
| 1102 | { |
| 1103 | // mktime() rather unintuitively fails for Jan 1, 1970 if the hour is |
| 1104 | // less than timezone - try to make it work for this case |
| 1105 | if ( tm2.tm_year == 70 && tm2.tm_mon == 0 && tm2.tm_mday == 1 ) |
| 1106 | { |
| 1107 | // add timezone to make sure that date is in range |
| 1108 | tm2.tm_sec -= GetTimeZone(); |
| 1109 | |
| 1110 | timet = mktime(&tm2); |
| 1111 | if ( timet != (time_t)-1 ) |
| 1112 | { |
| 1113 | timet += GetTimeZone(); |
| 1114 | |
| 1115 | return Set(timet); |
| 1116 | } |
| 1117 | } |
| 1118 | |
| 1119 | wxFAIL_MSG( _T("mktime() failed") ); |
| 1120 | |
| 1121 | *this = wxInvalidDateTime; |
| 1122 | |
| 1123 | return *this; |
| 1124 | } |
| 1125 | else |
| 1126 | { |
| 1127 | return Set(timet); |
| 1128 | } |
| 1129 | } |
| 1130 | |
| 1131 | wxDateTime& wxDateTime::Set(wxDateTime_t hour, |
| 1132 | wxDateTime_t minute, |
| 1133 | wxDateTime_t second, |
| 1134 | wxDateTime_t millisec) |
| 1135 | { |
| 1136 | // we allow seconds to be 61 to account for the leap seconds, even if we |
| 1137 | // don't use them really |
| 1138 | wxDATETIME_CHECK( hour < 24 && |
| 1139 | second < 62 && |
| 1140 | minute < 60 && |
| 1141 | millisec < 1000, |
| 1142 | _T("Invalid time in wxDateTime::Set()") ); |
| 1143 | |
| 1144 | // get the current date from system |
| 1145 | struct tm *tm = GetTmNow(); |
| 1146 | |
| 1147 | wxDATETIME_CHECK( tm, _T("localtime() failed") ); |
| 1148 | |
| 1149 | // adjust the time |
| 1150 | tm->tm_hour = hour; |
| 1151 | tm->tm_min = minute; |
| 1152 | tm->tm_sec = second; |
| 1153 | |
| 1154 | (void)Set(*tm); |
| 1155 | |
| 1156 | // and finally adjust milliseconds |
| 1157 | return SetMillisecond(millisec); |
| 1158 | } |
| 1159 | |
| 1160 | wxDateTime& wxDateTime::Set(wxDateTime_t day, |
| 1161 | Month month, |
| 1162 | int year, |
| 1163 | wxDateTime_t hour, |
| 1164 | wxDateTime_t minute, |
| 1165 | wxDateTime_t second, |
| 1166 | wxDateTime_t millisec) |
| 1167 | { |
| 1168 | wxDATETIME_CHECK( hour < 24 && |
| 1169 | second < 62 && |
| 1170 | minute < 60 && |
| 1171 | millisec < 1000, |
| 1172 | _T("Invalid time in wxDateTime::Set()") ); |
| 1173 | |
| 1174 | ReplaceDefaultYearMonthWithCurrent(&year, &month); |
| 1175 | |
| 1176 | wxDATETIME_CHECK( (0 < day) && (day <= GetNumberOfDays(month, year)), |
| 1177 | _T("Invalid date in wxDateTime::Set()") ); |
| 1178 | |
| 1179 | // the range of time_t type (inclusive) |
| 1180 | static const int yearMinInRange = 1970; |
| 1181 | static const int yearMaxInRange = 2037; |
| 1182 | |
| 1183 | // test only the year instead of testing for the exact end of the Unix |
| 1184 | // time_t range - it doesn't bring anything to do more precise checks |
| 1185 | if ( year >= yearMinInRange && year <= yearMaxInRange ) |
| 1186 | { |
| 1187 | // use the standard library version if the date is in range - this is |
| 1188 | // probably more efficient than our code |
| 1189 | struct tm tm; |
| 1190 | tm.tm_year = year - 1900; |
| 1191 | tm.tm_mon = month; |
| 1192 | tm.tm_mday = day; |
| 1193 | tm.tm_hour = hour; |
| 1194 | tm.tm_min = minute; |
| 1195 | tm.tm_sec = second; |
| 1196 | tm.tm_isdst = -1; // mktime() will guess it |
| 1197 | |
| 1198 | (void)Set(tm); |
| 1199 | |
| 1200 | // and finally adjust milliseconds |
| 1201 | return SetMillisecond(millisec); |
| 1202 | } |
| 1203 | else |
| 1204 | { |
| 1205 | // do time calculations ourselves: we want to calculate the number of |
| 1206 | // milliseconds between the given date and the epoch |
| 1207 | |
| 1208 | // get the JDN for the midnight of this day |
| 1209 | m_time = GetTruncatedJDN(day, month, year); |
| 1210 | m_time -= EPOCH_JDN; |
| 1211 | m_time *= SECONDS_PER_DAY * TIME_T_FACTOR; |
| 1212 | |
| 1213 | // JDN corresponds to GMT, we take localtime |
| 1214 | Add(wxTimeSpan(hour, minute, second + GetTimeZone(), millisec)); |
| 1215 | } |
| 1216 | |
| 1217 | return *this; |
| 1218 | } |
| 1219 | |
| 1220 | wxDateTime& wxDateTime::Set(double jdn) |
| 1221 | { |
| 1222 | // so that m_time will be 0 for the midnight of Jan 1, 1970 which is jdn |
| 1223 | // EPOCH_JDN + 0.5 |
| 1224 | jdn -= EPOCH_JDN + 0.5; |
| 1225 | |
| 1226 | jdn *= MILLISECONDS_PER_DAY; |
| 1227 | |
| 1228 | m_time.Assign(jdn); |
| 1229 | |
| 1230 | return *this; |
| 1231 | } |
| 1232 | |
| 1233 | wxDateTime& wxDateTime::ResetTime() |
| 1234 | { |
| 1235 | Tm tm = GetTm(); |
| 1236 | |
| 1237 | if ( tm.hour || tm.min || tm.sec || tm.msec ) |
| 1238 | { |
| 1239 | tm.msec = |
| 1240 | tm.sec = |
| 1241 | tm.min = |
| 1242 | tm.hour = 0; |
| 1243 | |
| 1244 | Set(tm); |
| 1245 | } |
| 1246 | |
| 1247 | return *this; |
| 1248 | } |
| 1249 | |
| 1250 | // ---------------------------------------------------------------------------- |
| 1251 | // time_t <-> broken down time conversions |
| 1252 | // ---------------------------------------------------------------------------- |
| 1253 | |
| 1254 | wxDateTime::Tm wxDateTime::GetTm(const TimeZone& tz) const |
| 1255 | { |
| 1256 | wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); |
| 1257 | |
| 1258 | time_t time = GetTicks(); |
| 1259 | if ( time != (time_t)-1 ) |
| 1260 | { |
| 1261 | // use C RTL functions |
| 1262 | tm *tm; |
| 1263 | if ( tz.GetOffset() == -GetTimeZone() ) |
| 1264 | { |
| 1265 | // we are working with local time |
| 1266 | tm = localtime(&time); |
| 1267 | |
| 1268 | // should never happen |
| 1269 | wxCHECK_MSG( tm, Tm(), _T("localtime() failed") ); |
| 1270 | } |
| 1271 | else |
| 1272 | { |
| 1273 | time += (time_t)tz.GetOffset(); |
| 1274 | #if defined(__VMS__) || defined(__WATCOMC__) // time is unsigned so avoid warning |
| 1275 | int time2 = (int) time; |
| 1276 | if ( time2 >= 0 ) |
| 1277 | #else |
| 1278 | if ( time >= 0 ) |
| 1279 | #endif |
| 1280 | { |
| 1281 | tm = gmtime(&time); |
| 1282 | |
| 1283 | // should never happen |
| 1284 | wxCHECK_MSG( tm, Tm(), _T("gmtime() failed") ); |
| 1285 | } |
| 1286 | else |
| 1287 | { |
| 1288 | tm = (struct tm *)NULL; |
| 1289 | } |
| 1290 | } |
| 1291 | |
| 1292 | if ( tm ) |
| 1293 | { |
| 1294 | // adjust the milliseconds |
| 1295 | Tm tm2(*tm, tz); |
| 1296 | long timeOnly = (m_time % MILLISECONDS_PER_DAY).ToLong(); |
| 1297 | tm2.msec = (wxDateTime_t)(timeOnly % 1000); |
| 1298 | return tm2; |
| 1299 | } |
| 1300 | //else: use generic code below |
| 1301 | } |
| 1302 | |
| 1303 | // remember the time and do the calculations with the date only - this |
| 1304 | // eliminates rounding errors of the floating point arithmetics |
| 1305 | |
| 1306 | wxLongLong timeMidnight = m_time + tz.GetOffset() * 1000; |
| 1307 | |
| 1308 | long timeOnly = (timeMidnight % MILLISECONDS_PER_DAY).ToLong(); |
| 1309 | |
| 1310 | // we want to always have positive time and timeMidnight to be really |
| 1311 | // the midnight before it |
| 1312 | if ( timeOnly < 0 ) |
| 1313 | { |
| 1314 | timeOnly = MILLISECONDS_PER_DAY + timeOnly; |
| 1315 | } |
| 1316 | |
| 1317 | timeMidnight -= timeOnly; |
| 1318 | |
| 1319 | // calculate the Gregorian date from JDN for the midnight of our date: |
| 1320 | // this will yield day, month (in 1..12 range) and year |
| 1321 | |
| 1322 | // actually, this is the JDN for the noon of the previous day |
| 1323 | long jdn = (timeMidnight / MILLISECONDS_PER_DAY).ToLong() + EPOCH_JDN; |
| 1324 | |
| 1325 | // CREDIT: code below is by Scott E. Lee (but bugs are mine) |
| 1326 | |
| 1327 | wxASSERT_MSG( jdn > -2, _T("JDN out of range") ); |
| 1328 | |
| 1329 | // calculate the century |
| 1330 | long temp = (jdn + JDN_OFFSET) * 4 - 1; |
| 1331 | long century = temp / DAYS_PER_400_YEARS; |
| 1332 | |
| 1333 | // then the year and day of year (1 <= dayOfYear <= 366) |
| 1334 | temp = ((temp % DAYS_PER_400_YEARS) / 4) * 4 + 3; |
| 1335 | long year = (century * 100) + (temp / DAYS_PER_4_YEARS); |
| 1336 | long dayOfYear = (temp % DAYS_PER_4_YEARS) / 4 + 1; |
| 1337 | |
| 1338 | // and finally the month and day of the month |
| 1339 | temp = dayOfYear * 5 - 3; |
| 1340 | long month = temp / DAYS_PER_5_MONTHS; |
| 1341 | long day = (temp % DAYS_PER_5_MONTHS) / 5 + 1; |
| 1342 | |
| 1343 | // month is counted from March - convert to normal |
| 1344 | if ( month < 10 ) |
| 1345 | { |
| 1346 | month += 3; |
| 1347 | } |
| 1348 | else |
| 1349 | { |
| 1350 | year += 1; |
| 1351 | month -= 9; |
| 1352 | } |
| 1353 | |
| 1354 | // year is offset by 4800 |
| 1355 | year -= 4800; |
| 1356 | |
| 1357 | // check that the algorithm gave us something reasonable |
| 1358 | wxASSERT_MSG( (0 < month) && (month <= 12), _T("invalid month") ); |
| 1359 | wxASSERT_MSG( (1 <= day) && (day < 32), _T("invalid day") ); |
| 1360 | |
| 1361 | // construct Tm from these values |
| 1362 | Tm tm; |
| 1363 | tm.year = (int)year; |
| 1364 | tm.mon = (Month)(month - 1); // algorithm yields 1 for January, not 0 |
| 1365 | tm.mday = (wxDateTime_t)day; |
| 1366 | tm.msec = (wxDateTime_t)(timeOnly % 1000); |
| 1367 | timeOnly -= tm.msec; |
| 1368 | timeOnly /= 1000; // now we have time in seconds |
| 1369 | |
| 1370 | tm.sec = (wxDateTime_t)(timeOnly % 60); |
| 1371 | timeOnly -= tm.sec; |
| 1372 | timeOnly /= 60; // now we have time in minutes |
| 1373 | |
| 1374 | tm.min = (wxDateTime_t)(timeOnly % 60); |
| 1375 | timeOnly -= tm.min; |
| 1376 | |
| 1377 | tm.hour = (wxDateTime_t)(timeOnly / 60); |
| 1378 | |
| 1379 | return tm; |
| 1380 | } |
| 1381 | |
| 1382 | wxDateTime& wxDateTime::SetYear(int year) |
| 1383 | { |
| 1384 | wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); |
| 1385 | |
| 1386 | Tm tm(GetTm()); |
| 1387 | tm.year = year; |
| 1388 | Set(tm); |
| 1389 | |
| 1390 | return *this; |
| 1391 | } |
| 1392 | |
| 1393 | wxDateTime& wxDateTime::SetMonth(Month month) |
| 1394 | { |
| 1395 | wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); |
| 1396 | |
| 1397 | Tm tm(GetTm()); |
| 1398 | tm.mon = month; |
| 1399 | Set(tm); |
| 1400 | |
| 1401 | return *this; |
| 1402 | } |
| 1403 | |
| 1404 | wxDateTime& wxDateTime::SetDay(wxDateTime_t mday) |
| 1405 | { |
| 1406 | wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); |
| 1407 | |
| 1408 | Tm tm(GetTm()); |
| 1409 | tm.mday = mday; |
| 1410 | Set(tm); |
| 1411 | |
| 1412 | return *this; |
| 1413 | } |
| 1414 | |
| 1415 | wxDateTime& wxDateTime::SetHour(wxDateTime_t hour) |
| 1416 | { |
| 1417 | wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); |
| 1418 | |
| 1419 | Tm tm(GetTm()); |
| 1420 | tm.hour = hour; |
| 1421 | Set(tm); |
| 1422 | |
| 1423 | return *this; |
| 1424 | } |
| 1425 | |
| 1426 | wxDateTime& wxDateTime::SetMinute(wxDateTime_t min) |
| 1427 | { |
| 1428 | wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); |
| 1429 | |
| 1430 | Tm tm(GetTm()); |
| 1431 | tm.min = min; |
| 1432 | Set(tm); |
| 1433 | |
| 1434 | return *this; |
| 1435 | } |
| 1436 | |
| 1437 | wxDateTime& wxDateTime::SetSecond(wxDateTime_t sec) |
| 1438 | { |
| 1439 | wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); |
| 1440 | |
| 1441 | Tm tm(GetTm()); |
| 1442 | tm.sec = sec; |
| 1443 | Set(tm); |
| 1444 | |
| 1445 | return *this; |
| 1446 | } |
| 1447 | |
| 1448 | wxDateTime& wxDateTime::SetMillisecond(wxDateTime_t millisecond) |
| 1449 | { |
| 1450 | wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); |
| 1451 | |
| 1452 | // we don't need to use GetTm() for this one |
| 1453 | m_time -= m_time % 1000l; |
| 1454 | m_time += millisecond; |
| 1455 | |
| 1456 | return *this; |
| 1457 | } |
| 1458 | |
| 1459 | // ---------------------------------------------------------------------------- |
| 1460 | // wxDateTime arithmetics |
| 1461 | // ---------------------------------------------------------------------------- |
| 1462 | |
| 1463 | wxDateTime& wxDateTime::Add(const wxDateSpan& diff) |
| 1464 | { |
| 1465 | Tm tm(GetTm()); |
| 1466 | |
| 1467 | tm.year += diff.GetYears(); |
| 1468 | tm.AddMonths(diff.GetMonths()); |
| 1469 | |
| 1470 | // check that the resulting date is valid |
| 1471 | if ( tm.mday > GetNumOfDaysInMonth(tm.year, tm.mon) ) |
| 1472 | { |
| 1473 | // We suppose that when adding one month to Jan 31 we want to get Feb |
| 1474 | // 28 (or 29), i.e. adding a month to the last day of the month should |
| 1475 | // give the last day of the next month which is quite logical. |
| 1476 | // |
| 1477 | // Unfortunately, there is no logic way to understand what should |
| 1478 | // Jan 30 + 1 month be - Feb 28 too or Feb 27 (assuming non leap year)? |
| 1479 | // We make it Feb 28 (last day too), but it is highly questionable. |
| 1480 | tm.mday = GetNumOfDaysInMonth(tm.year, tm.mon); |
| 1481 | } |
| 1482 | |
| 1483 | tm.AddDays(diff.GetTotalDays()); |
| 1484 | |
| 1485 | Set(tm); |
| 1486 | |
| 1487 | wxASSERT_MSG( IsSameTime(tm), |
| 1488 | _T("Add(wxDateSpan) shouldn't modify time") ); |
| 1489 | |
| 1490 | return *this; |
| 1491 | } |
| 1492 | |
| 1493 | // ---------------------------------------------------------------------------- |
| 1494 | // Weekday and monthday stuff |
| 1495 | // ---------------------------------------------------------------------------- |
| 1496 | |
| 1497 | bool wxDateTime::SetToTheWeek(wxDateTime_t numWeek, WeekDay weekday) |
| 1498 | { |
| 1499 | int year = GetYear(); |
| 1500 | |
| 1501 | // Jan 4 always lies in the 1st week of the year |
| 1502 | Set(4, Jan, year); |
| 1503 | SetToWeekDayInSameWeek(weekday) += wxDateSpan::Weeks(numWeek); |
| 1504 | |
| 1505 | if ( GetYear() != year ) |
| 1506 | { |
| 1507 | // oops... numWeek was too big |
| 1508 | return FALSE; |
| 1509 | } |
| 1510 | |
| 1511 | return TRUE; |
| 1512 | } |
| 1513 | |
| 1514 | wxDateTime& wxDateTime::SetToLastMonthDay(Month month, |
| 1515 | int year) |
| 1516 | { |
| 1517 | // take the current month/year if none specified |
| 1518 | if ( year == Inv_Year ) |
| 1519 | year = GetYear(); |
| 1520 | if ( month == Inv_Month ) |
| 1521 | month = GetMonth(); |
| 1522 | |
| 1523 | return Set(GetNumOfDaysInMonth(year, month), month, year); |
| 1524 | } |
| 1525 | |
| 1526 | wxDateTime& wxDateTime::SetToWeekDayInSameWeek(WeekDay weekday) |
| 1527 | { |
| 1528 | wxDATETIME_CHECK( weekday != Inv_WeekDay, _T("invalid weekday") ); |
| 1529 | |
| 1530 | WeekDay wdayThis = GetWeekDay(); |
| 1531 | if ( weekday == wdayThis ) |
| 1532 | { |
| 1533 | // nothing to do |
| 1534 | return *this; |
| 1535 | } |
| 1536 | else if ( weekday < wdayThis ) |
| 1537 | { |
| 1538 | return Subtract(wxDateSpan::Days(wdayThis - weekday)); |
| 1539 | } |
| 1540 | else // weekday > wdayThis |
| 1541 | { |
| 1542 | return Add(wxDateSpan::Days(weekday - wdayThis)); |
| 1543 | } |
| 1544 | } |
| 1545 | |
| 1546 | wxDateTime& wxDateTime::SetToNextWeekDay(WeekDay weekday) |
| 1547 | { |
| 1548 | wxDATETIME_CHECK( weekday != Inv_WeekDay, _T("invalid weekday") ); |
| 1549 | |
| 1550 | int diff; |
| 1551 | WeekDay wdayThis = GetWeekDay(); |
| 1552 | if ( weekday == wdayThis ) |
| 1553 | { |
| 1554 | // nothing to do |
| 1555 | return *this; |
| 1556 | } |
| 1557 | else if ( weekday < wdayThis ) |
| 1558 | { |
| 1559 | // need to advance a week |
| 1560 | diff = 7 - (wdayThis - weekday); |
| 1561 | } |
| 1562 | else // weekday > wdayThis |
| 1563 | { |
| 1564 | diff = weekday - wdayThis; |
| 1565 | } |
| 1566 | |
| 1567 | return Add(wxDateSpan::Days(diff)); |
| 1568 | } |
| 1569 | |
| 1570 | wxDateTime& wxDateTime::SetToPrevWeekDay(WeekDay weekday) |
| 1571 | { |
| 1572 | wxDATETIME_CHECK( weekday != Inv_WeekDay, _T("invalid weekday") ); |
| 1573 | |
| 1574 | int diff; |
| 1575 | WeekDay wdayThis = GetWeekDay(); |
| 1576 | if ( weekday == wdayThis ) |
| 1577 | { |
| 1578 | // nothing to do |
| 1579 | return *this; |
| 1580 | } |
| 1581 | else if ( weekday > wdayThis ) |
| 1582 | { |
| 1583 | // need to go to previous week |
| 1584 | diff = 7 - (weekday - wdayThis); |
| 1585 | } |
| 1586 | else // weekday < wdayThis |
| 1587 | { |
| 1588 | diff = wdayThis - weekday; |
| 1589 | } |
| 1590 | |
| 1591 | return Subtract(wxDateSpan::Days(diff)); |
| 1592 | } |
| 1593 | |
| 1594 | bool wxDateTime::SetToWeekDay(WeekDay weekday, |
| 1595 | int n, |
| 1596 | Month month, |
| 1597 | int year) |
| 1598 | { |
| 1599 | wxCHECK_MSG( weekday != Inv_WeekDay, FALSE, _T("invalid weekday") ); |
| 1600 | |
| 1601 | // we don't check explicitly that -5 <= n <= 5 because we will return FALSE |
| 1602 | // anyhow in such case - but may be should still give an assert for it? |
| 1603 | |
| 1604 | // take the current month/year if none specified |
| 1605 | ReplaceDefaultYearMonthWithCurrent(&year, &month); |
| 1606 | |
| 1607 | wxDateTime dt; |
| 1608 | |
| 1609 | // TODO this probably could be optimised somehow... |
| 1610 | |
| 1611 | if ( n > 0 ) |
| 1612 | { |
| 1613 | // get the first day of the month |
| 1614 | dt.Set(1, month, year); |
| 1615 | |
| 1616 | // get its wday |
| 1617 | WeekDay wdayFirst = dt.GetWeekDay(); |
| 1618 | |
| 1619 | // go to the first weekday of the month |
| 1620 | int diff = weekday - wdayFirst; |
| 1621 | if ( diff < 0 ) |
| 1622 | diff += 7; |
| 1623 | |
| 1624 | // add advance n-1 weeks more |
| 1625 | diff += 7*(n - 1); |
| 1626 | |
| 1627 | dt += wxDateSpan::Days(diff); |
| 1628 | } |
| 1629 | else // count from the end of the month |
| 1630 | { |
| 1631 | // get the last day of the month |
| 1632 | dt.SetToLastMonthDay(month, year); |
| 1633 | |
| 1634 | // get its wday |
| 1635 | WeekDay wdayLast = dt.GetWeekDay(); |
| 1636 | |
| 1637 | // go to the last weekday of the month |
| 1638 | int diff = wdayLast - weekday; |
| 1639 | if ( diff < 0 ) |
| 1640 | diff += 7; |
| 1641 | |
| 1642 | // and rewind n-1 weeks from there |
| 1643 | diff += 7*(-n - 1); |
| 1644 | |
| 1645 | dt -= wxDateSpan::Days(diff); |
| 1646 | } |
| 1647 | |
| 1648 | // check that it is still in the same month |
| 1649 | if ( dt.GetMonth() == month ) |
| 1650 | { |
| 1651 | *this = dt; |
| 1652 | |
| 1653 | return TRUE; |
| 1654 | } |
| 1655 | else |
| 1656 | { |
| 1657 | // no such day in this month |
| 1658 | return FALSE; |
| 1659 | } |
| 1660 | } |
| 1661 | |
| 1662 | wxDateTime::wxDateTime_t wxDateTime::GetDayOfYear(const TimeZone& tz) const |
| 1663 | { |
| 1664 | Tm tm(GetTm(tz)); |
| 1665 | |
| 1666 | return gs_cumulatedDays[IsLeapYear(tm.year)][tm.mon] + tm.mday; |
| 1667 | } |
| 1668 | |
| 1669 | wxDateTime::wxDateTime_t wxDateTime::GetWeekOfYear(wxDateTime::WeekFlags flags, |
| 1670 | const TimeZone& tz) const |
| 1671 | { |
| 1672 | if ( flags == Default_First ) |
| 1673 | { |
| 1674 | flags = GetCountry() == USA ? Sunday_First : Monday_First; |
| 1675 | } |
| 1676 | |
| 1677 | wxDateTime_t nDayInYear = GetDayOfYear(tz); |
| 1678 | wxDateTime_t week; |
| 1679 | |
| 1680 | WeekDay wd = GetWeekDay(tz); |
| 1681 | if ( flags == Sunday_First ) |
| 1682 | { |
| 1683 | week = (nDayInYear - wd + 7) / 7; |
| 1684 | } |
| 1685 | else |
| 1686 | { |
| 1687 | // have to shift the week days values |
| 1688 | week = (nDayInYear - (wd - 1 + 7) % 7 + 7) / 7; |
| 1689 | } |
| 1690 | |
| 1691 | // FIXME some more elegant way?? |
| 1692 | WeekDay wdYearStart = wxDateTime(1, Jan, GetYear()).GetWeekDay(); |
| 1693 | if ( wdYearStart == Wed || wdYearStart == Thu ) |
| 1694 | { |
| 1695 | week++; |
| 1696 | } |
| 1697 | |
| 1698 | return week; |
| 1699 | } |
| 1700 | |
| 1701 | wxDateTime::wxDateTime_t wxDateTime::GetWeekOfMonth(wxDateTime::WeekFlags flags, |
| 1702 | const TimeZone& tz) const |
| 1703 | { |
| 1704 | Tm tm = GetTm(tz); |
| 1705 | wxDateTime dtMonthStart = wxDateTime(1, tm.mon, tm.year); |
| 1706 | int nWeek = GetWeekOfYear(flags) - dtMonthStart.GetWeekOfYear(flags) + 1; |
| 1707 | if ( nWeek < 0 ) |
| 1708 | { |
| 1709 | // this may happen for January when Jan, 1 is the last week of the |
| 1710 | // previous year |
| 1711 | nWeek += IsLeapYear(tm.year - 1) ? 53 : 52; |
| 1712 | } |
| 1713 | |
| 1714 | return (wxDateTime::wxDateTime_t)nWeek; |
| 1715 | } |
| 1716 | |
| 1717 | wxDateTime& wxDateTime::SetToYearDay(wxDateTime::wxDateTime_t yday) |
| 1718 | { |
| 1719 | int year = GetYear(); |
| 1720 | wxDATETIME_CHECK( (0 < yday) && (yday <= GetNumberOfDays(year)), |
| 1721 | _T("invalid year day") ); |
| 1722 | |
| 1723 | bool isLeap = IsLeapYear(year); |
| 1724 | for ( Month mon = Jan; mon < Inv_Month; wxNextMonth(mon) ) |
| 1725 | { |
| 1726 | // for Dec, we can't compare with gs_cumulatedDays[mon + 1], but we |
| 1727 | // don't need it neither - because of the CHECK above we know that |
| 1728 | // yday lies in December then |
| 1729 | if ( (mon == Dec) || (yday < gs_cumulatedDays[isLeap][mon + 1]) ) |
| 1730 | { |
| 1731 | Set(yday - gs_cumulatedDays[isLeap][mon], mon, year); |
| 1732 | |
| 1733 | break; |
| 1734 | } |
| 1735 | } |
| 1736 | |
| 1737 | return *this; |
| 1738 | } |
| 1739 | |
| 1740 | // ---------------------------------------------------------------------------- |
| 1741 | // Julian day number conversion and related stuff |
| 1742 | // ---------------------------------------------------------------------------- |
| 1743 | |
| 1744 | double wxDateTime::GetJulianDayNumber() const |
| 1745 | { |
| 1746 | // JDN are always expressed for the GMT dates |
| 1747 | Tm tm(ToTimezone(GMT0).GetTm(GMT0)); |
| 1748 | |
| 1749 | double result = GetTruncatedJDN(tm.mday, tm.mon, tm.year); |
| 1750 | |
| 1751 | // add the part GetTruncatedJDN() neglected |
| 1752 | result += 0.5; |
| 1753 | |
| 1754 | // and now add the time: 86400 sec = 1 JDN |
| 1755 | return result + ((double)(60*(60*tm.hour + tm.min) + tm.sec)) / 86400; |
| 1756 | } |
| 1757 | |
| 1758 | double wxDateTime::GetRataDie() const |
| 1759 | { |
| 1760 | // March 1 of the year 0 is Rata Die day -306 and JDN 1721119.5 |
| 1761 | return GetJulianDayNumber() - 1721119.5 - 306; |
| 1762 | } |
| 1763 | |
| 1764 | // ---------------------------------------------------------------------------- |
| 1765 | // timezone and DST stuff |
| 1766 | // ---------------------------------------------------------------------------- |
| 1767 | |
| 1768 | int wxDateTime::IsDST(wxDateTime::Country country) const |
| 1769 | { |
| 1770 | wxCHECK_MSG( country == Country_Default, -1, |
| 1771 | _T("country support not implemented") ); |
| 1772 | |
| 1773 | // use the C RTL for the dates in the standard range |
| 1774 | time_t timet = GetTicks(); |
| 1775 | if ( timet != (time_t)-1 ) |
| 1776 | { |
| 1777 | tm *tm = localtime(&timet); |
| 1778 | |
| 1779 | wxCHECK_MSG( tm, -1, _T("localtime() failed") ); |
| 1780 | |
| 1781 | return tm->tm_isdst; |
| 1782 | } |
| 1783 | else |
| 1784 | { |
| 1785 | int year = GetYear(); |
| 1786 | |
| 1787 | if ( !IsDSTApplicable(year, country) ) |
| 1788 | { |
| 1789 | // no DST time in this year in this country |
| 1790 | return -1; |
| 1791 | } |
| 1792 | |
| 1793 | return IsBetween(GetBeginDST(year, country), GetEndDST(year, country)); |
| 1794 | } |
| 1795 | } |
| 1796 | |
| 1797 | wxDateTime& wxDateTime::MakeTimezone(const TimeZone& tz, bool noDST) |
| 1798 | { |
| 1799 | long secDiff = GetTimeZone() + tz.GetOffset(); |
| 1800 | |
| 1801 | // we need to know whether DST is or not in effect for this date unless |
| 1802 | // the test disabled by the caller |
| 1803 | if ( !noDST && (IsDST() == 1) ) |
| 1804 | { |
| 1805 | // FIXME we assume that the DST is always shifted by 1 hour |
| 1806 | secDiff -= 3600; |
| 1807 | } |
| 1808 | |
| 1809 | return Subtract(wxTimeSpan::Seconds(secDiff)); |
| 1810 | } |
| 1811 | |
| 1812 | // ---------------------------------------------------------------------------- |
| 1813 | // wxDateTime to/from text representations |
| 1814 | // ---------------------------------------------------------------------------- |
| 1815 | |
| 1816 | wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const |
| 1817 | { |
| 1818 | wxCHECK_MSG( format, _T(""), _T("NULL format in wxDateTime::Format") ); |
| 1819 | |
| 1820 | // we have to use our own implementation if the date is out of range of |
| 1821 | // strftime() or if we use non standard specificators |
| 1822 | time_t time = GetTicks(); |
| 1823 | if ( (time != (time_t)-1) && !wxStrstr(format, _T("%l")) ) |
| 1824 | { |
| 1825 | // use strftime() |
| 1826 | tm *tm; |
| 1827 | if ( tz.GetOffset() == -GetTimeZone() ) |
| 1828 | { |
| 1829 | // we are working with local time |
| 1830 | tm = localtime(&time); |
| 1831 | |
| 1832 | // should never happen |
| 1833 | wxCHECK_MSG( tm, wxEmptyString, _T("localtime() failed") ); |
| 1834 | } |
| 1835 | else |
| 1836 | { |
| 1837 | time += (int)tz.GetOffset(); |
| 1838 | |
| 1839 | #if defined(__VMS__) || defined(__WATCOMC__) // time is unsigned so avoid warning |
| 1840 | int time2 = (int) time; |
| 1841 | if ( time2 >= 0 ) |
| 1842 | #else |
| 1843 | if ( time >= 0 ) |
| 1844 | #endif |
| 1845 | { |
| 1846 | tm = gmtime(&time); |
| 1847 | |
| 1848 | // should never happen |
| 1849 | wxCHECK_MSG( tm, wxEmptyString, _T("gmtime() failed") ); |
| 1850 | } |
| 1851 | else |
| 1852 | { |
| 1853 | tm = (struct tm *)NULL; |
| 1854 | } |
| 1855 | } |
| 1856 | |
| 1857 | if ( tm ) |
| 1858 | { |
| 1859 | return CallStrftime(format, tm); |
| 1860 | } |
| 1861 | //else: use generic code below |
| 1862 | } |
| 1863 | |
| 1864 | // we only parse ANSI C format specifications here, no POSIX 2 |
| 1865 | // complications, no GNU extensions but we do add support for a "%l" format |
| 1866 | // specifier allowing to get the number of milliseconds |
| 1867 | Tm tm = GetTm(tz); |
| 1868 | |
| 1869 | // used for calls to strftime() when we only deal with time |
| 1870 | struct tm tmTimeOnly; |
| 1871 | tmTimeOnly.tm_hour = tm.hour; |
| 1872 | tmTimeOnly.tm_min = tm.min; |
| 1873 | tmTimeOnly.tm_sec = tm.sec; |
| 1874 | tmTimeOnly.tm_wday = 0; |
| 1875 | tmTimeOnly.tm_yday = 0; |
| 1876 | tmTimeOnly.tm_mday = 1; // any date will do |
| 1877 | tmTimeOnly.tm_mon = 0; |
| 1878 | tmTimeOnly.tm_year = 76; |
| 1879 | tmTimeOnly.tm_isdst = 0; // no DST, we adjust for tz ourselves |
| 1880 | |
| 1881 | wxString tmp, res, fmt; |
| 1882 | for ( const wxChar *p = format; *p; p++ ) |
| 1883 | { |
| 1884 | if ( *p != _T('%') ) |
| 1885 | { |
| 1886 | // copy as is |
| 1887 | res += *p; |
| 1888 | |
| 1889 | continue; |
| 1890 | } |
| 1891 | |
| 1892 | // set the default format |
| 1893 | switch ( *++p ) |
| 1894 | { |
| 1895 | case _T('Y'): // year has 4 digits |
| 1896 | fmt = _T("%04d"); |
| 1897 | break; |
| 1898 | |
| 1899 | case _T('j'): // day of year has 3 digits |
| 1900 | case _T('l'): // milliseconds have 3 digits |
| 1901 | fmt = _T("%03d"); |
| 1902 | break; |
| 1903 | |
| 1904 | default: |
| 1905 | // it's either another valid format specifier in which case |
| 1906 | // the format is "%02d" (for all the rest) or we have the |
| 1907 | // field width preceding the format in which case it will |
| 1908 | // override the default format anyhow |
| 1909 | fmt = _T("%02d"); |
| 1910 | } |
| 1911 | |
| 1912 | bool restart = TRUE; |
| 1913 | while ( restart ) |
| 1914 | { |
| 1915 | restart = FALSE; |
| 1916 | |
| 1917 | // start of the format specification |
| 1918 | switch ( *p ) |
| 1919 | { |
| 1920 | case _T('a'): // a weekday name |
| 1921 | case _T('A'): |
| 1922 | // second parameter should be TRUE for abbreviated names |
| 1923 | res += GetWeekDayName(tm.GetWeekDay(), |
| 1924 | *p == _T('a') ? Name_Abbr : Name_Full); |
| 1925 | break; |
| 1926 | |
| 1927 | case _T('b'): // a month name |
| 1928 | case _T('B'): |
| 1929 | res += GetMonthName(tm.mon, |
| 1930 | *p == _T('b') ? Name_Abbr : Name_Full); |
| 1931 | break; |
| 1932 | |
| 1933 | case _T('c'): // locale default date and time representation |
| 1934 | case _T('x'): // locale default date representation |
| 1935 | // |
| 1936 | // the problem: there is no way to know what do these format |
| 1937 | // specifications correspond to for the current locale. |
| 1938 | // |
| 1939 | // the solution: use a hack and still use strftime(): first |
| 1940 | // find the YEAR which is a year in the strftime() range (1970 |
| 1941 | // - 2038) whose Jan 1 falls on the same week day as the Jan 1 |
| 1942 | // of the real year. Then make a copy of the format and |
| 1943 | // replace all occurences of YEAR in it with some unique |
| 1944 | // string not appearing anywhere else in it, then use |
| 1945 | // strftime() to format the date in year YEAR and then replace |
| 1946 | // YEAR back by the real year and the unique replacement |
| 1947 | // string back with YEAR. Notice that "all occurences of YEAR" |
| 1948 | // means all occurences of 4 digit as well as 2 digit form! |
| 1949 | // |
| 1950 | // the bugs: we assume that neither of %c nor %x contains any |
| 1951 | // fields which may change between the YEAR and real year. For |
| 1952 | // example, the week number (%U, %W) and the day number (%j) |
| 1953 | // will change if one of these years is leap and the other one |
| 1954 | // is not! |
| 1955 | { |
| 1956 | // find the YEAR: normally, for any year X, Jan 1 or the |
| 1957 | // year X + 28 is the same weekday as Jan 1 of X (because |
| 1958 | // the weekday advances by 1 for each normal X and by 2 |
| 1959 | // for each leap X, hence by 5 every 4 years or by 35 |
| 1960 | // which is 0 mod 7 every 28 years) but this rule breaks |
| 1961 | // down if there are years between X and Y which are |
| 1962 | // divisible by 4 but not leap (i.e. divisible by 100 but |
| 1963 | // not 400), hence the correction. |
| 1964 | |
| 1965 | int yearReal = GetYear(tz); |
| 1966 | int mod28 = yearReal % 28; |
| 1967 | |
| 1968 | // be careful to not go too far - we risk to leave the |
| 1969 | // supported range |
| 1970 | int year; |
| 1971 | if ( mod28 < 10 ) |
| 1972 | { |
| 1973 | year = 1988 + mod28; // 1988 == 0 (mod 28) |
| 1974 | } |
| 1975 | else |
| 1976 | { |
| 1977 | year = 1970 + mod28 - 10; // 1970 == 10 (mod 28) |
| 1978 | } |
| 1979 | |
| 1980 | int nCentury = year / 100, |
| 1981 | nCenturyReal = yearReal / 100; |
| 1982 | |
| 1983 | // need to adjust for the years divisble by 400 which are |
| 1984 | // not leap but are counted like leap ones if we just take |
| 1985 | // the number of centuries in between for nLostWeekDays |
| 1986 | int nLostWeekDays = (nCentury - nCenturyReal) - |
| 1987 | (nCentury / 4 - nCenturyReal / 4); |
| 1988 | |
| 1989 | // we have to gain back the "lost" weekdays: note that the |
| 1990 | // effect of this loop is to not do anything to |
| 1991 | // nLostWeekDays (which we won't use any more), but to |
| 1992 | // (indirectly) set the year correctly |
| 1993 | while ( (nLostWeekDays % 7) != 0 ) |
| 1994 | { |
| 1995 | nLostWeekDays += year++ % 4 ? 1 : 2; |
| 1996 | } |
| 1997 | |
| 1998 | // at any rate, we couldn't go further than 1988 + 9 + 28! |
| 1999 | wxASSERT_MSG( year < 2030, |
| 2000 | _T("logic error in wxDateTime::Format") ); |
| 2001 | |
| 2002 | wxString strYear, strYear2; |
| 2003 | strYear.Printf(_T("%d"), year); |
| 2004 | strYear2.Printf(_T("%d"), year % 100); |
| 2005 | |
| 2006 | // find two strings not occuring in format (this is surely |
| 2007 | // not optimal way of doing it... improvements welcome!) |
| 2008 | wxString fmt = format; |
| 2009 | wxString replacement = (wxChar)-1; |
| 2010 | while ( fmt.Find(replacement) != wxNOT_FOUND ) |
| 2011 | { |
| 2012 | replacement << (wxChar)-1; |
| 2013 | } |
| 2014 | |
| 2015 | wxString replacement2 = (wxChar)-2; |
| 2016 | while ( fmt.Find(replacement) != wxNOT_FOUND ) |
| 2017 | { |
| 2018 | replacement << (wxChar)-2; |
| 2019 | } |
| 2020 | |
| 2021 | // replace all occurences of year with it |
| 2022 | bool wasReplaced = fmt.Replace(strYear, replacement) > 0; |
| 2023 | if ( !wasReplaced ) |
| 2024 | wasReplaced = fmt.Replace(strYear2, replacement2) > 0; |
| 2025 | |
| 2026 | // use strftime() to format the same date but in supported |
| 2027 | // year |
| 2028 | // |
| 2029 | // NB: we assume that strftime() doesn't check for the |
| 2030 | // date validity and will happily format the date |
| 2031 | // corresponding to Feb 29 of a non leap year (which |
| 2032 | // may happen if yearReal was leap and year is not) |
| 2033 | struct tm tmAdjusted; |
| 2034 | InitTm(tmAdjusted); |
| 2035 | tmAdjusted.tm_hour = tm.hour; |
| 2036 | tmAdjusted.tm_min = tm.min; |
| 2037 | tmAdjusted.tm_sec = tm.sec; |
| 2038 | tmAdjusted.tm_wday = tm.GetWeekDay(); |
| 2039 | tmAdjusted.tm_yday = GetDayOfYear(); |
| 2040 | tmAdjusted.tm_mday = tm.mday; |
| 2041 | tmAdjusted.tm_mon = tm.mon; |
| 2042 | tmAdjusted.tm_year = year - 1900; |
| 2043 | tmAdjusted.tm_isdst = 0; // no DST, already adjusted |
| 2044 | wxString str = CallStrftime(*p == _T('c') ? _T("%c") |
| 2045 | : _T("%x"), |
| 2046 | &tmAdjusted); |
| 2047 | |
| 2048 | // now replace the occurence of 1999 with the real year |
| 2049 | wxString strYearReal, strYearReal2; |
| 2050 | strYearReal.Printf(_T("%04d"), yearReal); |
| 2051 | strYearReal2.Printf(_T("%02d"), yearReal % 100); |
| 2052 | str.Replace(strYear, strYearReal); |
| 2053 | str.Replace(strYear2, strYearReal2); |
| 2054 | |
| 2055 | // and replace back all occurences of replacement string |
| 2056 | if ( wasReplaced ) |
| 2057 | { |
| 2058 | str.Replace(replacement2, strYear2); |
| 2059 | str.Replace(replacement, strYear); |
| 2060 | } |
| 2061 | |
| 2062 | res += str; |
| 2063 | } |
| 2064 | break; |
| 2065 | |
| 2066 | case _T('d'): // day of a month (01-31) |
| 2067 | res += wxString::Format(fmt, tm.mday); |
| 2068 | break; |
| 2069 | |
| 2070 | case _T('H'): // hour in 24h format (00-23) |
| 2071 | res += wxString::Format(fmt, tm.hour); |
| 2072 | break; |
| 2073 | |
| 2074 | case _T('I'): // hour in 12h format (01-12) |
| 2075 | { |
| 2076 | // 24h -> 12h, 0h -> 12h too |
| 2077 | int hour12 = tm.hour > 12 ? tm.hour - 12 |
| 2078 | : tm.hour ? tm.hour : 12; |
| 2079 | res += wxString::Format(fmt, hour12); |
| 2080 | } |
| 2081 | break; |
| 2082 | |
| 2083 | case _T('j'): // day of the year |
| 2084 | res += wxString::Format(fmt, GetDayOfYear(tz)); |
| 2085 | break; |
| 2086 | |
| 2087 | case _T('l'): // milliseconds (NOT STANDARD) |
| 2088 | res += wxString::Format(fmt, GetMillisecond(tz)); |
| 2089 | break; |
| 2090 | |
| 2091 | case _T('m'): // month as a number (01-12) |
| 2092 | res += wxString::Format(fmt, tm.mon + 1); |
| 2093 | break; |
| 2094 | |
| 2095 | case _T('M'): // minute as a decimal number (00-59) |
| 2096 | res += wxString::Format(fmt, tm.min); |
| 2097 | break; |
| 2098 | |
| 2099 | case _T('p'): // AM or PM string |
| 2100 | res += CallStrftime(_T("%p"), &tmTimeOnly); |
| 2101 | break; |
| 2102 | |
| 2103 | case _T('S'): // second as a decimal number (00-61) |
| 2104 | res += wxString::Format(fmt, tm.sec); |
| 2105 | break; |
| 2106 | |
| 2107 | case _T('U'): // week number in the year (Sunday 1st week day) |
| 2108 | res += wxString::Format(fmt, GetWeekOfYear(Sunday_First, tz)); |
| 2109 | break; |
| 2110 | |
| 2111 | case _T('W'): // week number in the year (Monday 1st week day) |
| 2112 | res += wxString::Format(fmt, GetWeekOfYear(Monday_First, tz)); |
| 2113 | break; |
| 2114 | |
| 2115 | case _T('w'): // weekday as a number (0-6), Sunday = 0 |
| 2116 | res += wxString::Format(fmt, tm.GetWeekDay()); |
| 2117 | break; |
| 2118 | |
| 2119 | // case _T('x'): -- handled with "%c" |
| 2120 | |
| 2121 | case _T('X'): // locale default time representation |
| 2122 | // just use strftime() to format the time for us |
| 2123 | res += CallStrftime(_T("%X"), &tmTimeOnly); |
| 2124 | break; |
| 2125 | |
| 2126 | case _T('y'): // year without century (00-99) |
| 2127 | res += wxString::Format(fmt, tm.year % 100); |
| 2128 | break; |
| 2129 | |
| 2130 | case _T('Y'): // year with century |
| 2131 | res += wxString::Format(fmt, tm.year); |
| 2132 | break; |
| 2133 | |
| 2134 | case _T('Z'): // timezone name |
| 2135 | res += CallStrftime(_T("%Z"), &tmTimeOnly); |
| 2136 | break; |
| 2137 | |
| 2138 | default: |
| 2139 | // is it the format width? |
| 2140 | fmt.Empty(); |
| 2141 | while ( *p == _T('-') || *p == _T('+') || |
| 2142 | *p == _T(' ') || wxIsdigit(*p) ) |
| 2143 | { |
| 2144 | fmt += *p; |
| 2145 | } |
| 2146 | |
| 2147 | if ( !fmt.IsEmpty() ) |
| 2148 | { |
| 2149 | // we've only got the flags and width so far in fmt |
| 2150 | fmt.Prepend(_T('%')); |
| 2151 | fmt.Append(_T('d')); |
| 2152 | |
| 2153 | restart = TRUE; |
| 2154 | |
| 2155 | break; |
| 2156 | } |
| 2157 | |
| 2158 | // no, it wasn't the width |
| 2159 | wxFAIL_MSG(_T("unknown format specificator")); |
| 2160 | |
| 2161 | // fall through and just copy it nevertheless |
| 2162 | |
| 2163 | case _T('%'): // a percent sign |
| 2164 | res += *p; |
| 2165 | break; |
| 2166 | |
| 2167 | case 0: // the end of string |
| 2168 | wxFAIL_MSG(_T("missing format at the end of string")); |
| 2169 | |
| 2170 | // just put the '%' which was the last char in format |
| 2171 | res += _T('%'); |
| 2172 | break; |
| 2173 | } |
| 2174 | } |
| 2175 | } |
| 2176 | |
| 2177 | return res; |
| 2178 | } |
| 2179 | |
| 2180 | // this function parses a string in (strict) RFC 822 format: see the section 5 |
| 2181 | // of the RFC for the detailed description, but briefly it's something of the |
| 2182 | // form "Sat, 18 Dec 1999 00:48:30 +0100" |
| 2183 | // |
| 2184 | // this function is "strict" by design - it must reject anything except true |
| 2185 | // RFC822 time specs. |
| 2186 | // |
| 2187 | // TODO a great candidate for using reg exps |
| 2188 | const wxChar *wxDateTime::ParseRfc822Date(const wxChar* date) |
| 2189 | { |
| 2190 | wxCHECK_MSG( date, (wxChar *)NULL, _T("NULL pointer in wxDateTime::Parse") ); |
| 2191 | |
| 2192 | const wxChar *p = date; |
| 2193 | const wxChar *comma = wxStrchr(p, _T(',')); |
| 2194 | if ( comma ) |
| 2195 | { |
| 2196 | // the part before comma is the weekday |
| 2197 | |
| 2198 | // skip it for now - we don't use but might check that it really |
| 2199 | // corresponds to the specfied date |
| 2200 | p = comma + 1; |
| 2201 | |
| 2202 | if ( *p != _T(' ') ) |
| 2203 | { |
| 2204 | wxLogDebug(_T("no space after weekday in RFC822 time spec")); |
| 2205 | |
| 2206 | return (wxChar *)NULL; |
| 2207 | } |
| 2208 | |
| 2209 | p++; // skip space |
| 2210 | } |
| 2211 | |
| 2212 | // the following 1 or 2 digits are the day number |
| 2213 | if ( !wxIsdigit(*p) ) |
| 2214 | { |
| 2215 | wxLogDebug(_T("day number expected in RFC822 time spec, none found")); |
| 2216 | |
| 2217 | return (wxChar *)NULL; |
| 2218 | } |
| 2219 | |
| 2220 | wxDateTime_t day = *p++ - _T('0'); |
| 2221 | if ( wxIsdigit(*p) ) |
| 2222 | { |
| 2223 | day *= 10; |
| 2224 | day += *p++ - _T('0'); |
| 2225 | } |
| 2226 | |
| 2227 | if ( *p++ != _T(' ') ) |
| 2228 | { |
| 2229 | return (wxChar *)NULL; |
| 2230 | } |
| 2231 | |
| 2232 | // the following 3 letters specify the month |
| 2233 | wxString monName(p, 3); |
| 2234 | Month mon; |
| 2235 | if ( monName == _T("Jan") ) |
| 2236 | mon = Jan; |
| 2237 | else if ( monName == _T("Feb") ) |
| 2238 | mon = Feb; |
| 2239 | else if ( monName == _T("Mar") ) |
| 2240 | mon = Mar; |
| 2241 | else if ( monName == _T("Apr") ) |
| 2242 | mon = Apr; |
| 2243 | else if ( monName == _T("May") ) |
| 2244 | mon = May; |
| 2245 | else if ( monName == _T("Jun") ) |
| 2246 | mon = Jun; |
| 2247 | else if ( monName == _T("Jul") ) |
| 2248 | mon = Jul; |
| 2249 | else if ( monName == _T("Aug") ) |
| 2250 | mon = Aug; |
| 2251 | else if ( monName == _T("Sep") ) |
| 2252 | mon = Sep; |
| 2253 | else if ( monName == _T("Oct") ) |
| 2254 | mon = Oct; |
| 2255 | else if ( monName == _T("Nov") ) |
| 2256 | mon = Nov; |
| 2257 | else if ( monName == _T("Dec") ) |
| 2258 | mon = Dec; |
| 2259 | else |
| 2260 | { |
| 2261 | wxLogDebug(_T("Invalid RFC 822 month name '%s'"), monName.c_str()); |
| 2262 | |
| 2263 | return (wxChar *)NULL; |
| 2264 | } |
| 2265 | |
| 2266 | p += 3; |
| 2267 | |
| 2268 | if ( *p++ != _T(' ') ) |
| 2269 | { |
| 2270 | return (wxChar *)NULL; |
| 2271 | } |
| 2272 | |
| 2273 | // next is the year |
| 2274 | if ( !wxIsdigit(*p) ) |
| 2275 | { |
| 2276 | // no year? |
| 2277 | return (wxChar *)NULL; |
| 2278 | } |
| 2279 | |
| 2280 | int year = *p++ - _T('0'); |
| 2281 | |
| 2282 | if ( !wxIsdigit(*p) ) |
| 2283 | { |
| 2284 | // should have at least 2 digits in the year |
| 2285 | return (wxChar *)NULL; |
| 2286 | } |
| 2287 | |
| 2288 | year *= 10; |
| 2289 | year += *p++ - _T('0'); |
| 2290 | |
| 2291 | // is it a 2 digit year (as per original RFC 822) or a 4 digit one? |
| 2292 | if ( wxIsdigit(*p) ) |
| 2293 | { |
| 2294 | year *= 10; |
| 2295 | year += *p++ - _T('0'); |
| 2296 | |
| 2297 | if ( !wxIsdigit(*p) ) |
| 2298 | { |
| 2299 | // no 3 digit years please |
| 2300 | return (wxChar *)NULL; |
| 2301 | } |
| 2302 | |
| 2303 | year *= 10; |
| 2304 | year += *p++ - _T('0'); |
| 2305 | } |
| 2306 | |
| 2307 | if ( *p++ != _T(' ') ) |
| 2308 | { |
| 2309 | return (wxChar *)NULL; |
| 2310 | } |
| 2311 | |
| 2312 | // time is in the format hh:mm:ss and seconds are optional |
| 2313 | if ( !wxIsdigit(*p) ) |
| 2314 | { |
| 2315 | return (wxChar *)NULL; |
| 2316 | } |
| 2317 | |
| 2318 | wxDateTime_t hour = *p++ - _T('0'); |
| 2319 | |
| 2320 | if ( !wxIsdigit(*p) ) |
| 2321 | { |
| 2322 | return (wxChar *)NULL; |
| 2323 | } |
| 2324 | |
| 2325 | hour *= 10; |
| 2326 | hour += *p++ - _T('0'); |
| 2327 | |
| 2328 | if ( *p++ != _T(':') ) |
| 2329 | { |
| 2330 | return (wxChar *)NULL; |
| 2331 | } |
| 2332 | |
| 2333 | if ( !wxIsdigit(*p) ) |
| 2334 | { |
| 2335 | return (wxChar *)NULL; |
| 2336 | } |
| 2337 | |
| 2338 | wxDateTime_t min = *p++ - _T('0'); |
| 2339 | |
| 2340 | if ( !wxIsdigit(*p) ) |
| 2341 | { |
| 2342 | return (wxChar *)NULL; |
| 2343 | } |
| 2344 | |
| 2345 | min *= 10; |
| 2346 | min += *p++ - _T('0'); |
| 2347 | |
| 2348 | wxDateTime_t sec = 0; |
| 2349 | if ( *p++ == _T(':') ) |
| 2350 | { |
| 2351 | if ( !wxIsdigit(*p) ) |
| 2352 | { |
| 2353 | return (wxChar *)NULL; |
| 2354 | } |
| 2355 | |
| 2356 | sec = *p++ - _T('0'); |
| 2357 | |
| 2358 | if ( !wxIsdigit(*p) ) |
| 2359 | { |
| 2360 | return (wxChar *)NULL; |
| 2361 | } |
| 2362 | |
| 2363 | sec *= 10; |
| 2364 | sec += *p++ - _T('0'); |
| 2365 | } |
| 2366 | |
| 2367 | if ( *p++ != _T(' ') ) |
| 2368 | { |
| 2369 | return (wxChar *)NULL; |
| 2370 | } |
| 2371 | |
| 2372 | // and now the interesting part: the timezone |
| 2373 | int offset; |
| 2374 | if ( *p == _T('-') || *p == _T('+') ) |
| 2375 | { |
| 2376 | // the explicit offset given: it has the form of hhmm |
| 2377 | bool plus = *p++ == _T('+'); |
| 2378 | |
| 2379 | if ( !wxIsdigit(*p) || !wxIsdigit(*(p + 1)) ) |
| 2380 | { |
| 2381 | return (wxChar *)NULL; |
| 2382 | } |
| 2383 | |
| 2384 | // hours |
| 2385 | offset = 60*(10*(*p - _T('0')) + (*(p + 1) - _T('0'))); |
| 2386 | |
| 2387 | p += 2; |
| 2388 | |
| 2389 | if ( !wxIsdigit(*p) || !wxIsdigit(*(p + 1)) ) |
| 2390 | { |
| 2391 | return (wxChar *)NULL; |
| 2392 | } |
| 2393 | |
| 2394 | // minutes |
| 2395 | offset += 10*(*p - _T('0')) + (*(p + 1) - _T('0')); |
| 2396 | |
| 2397 | if ( !plus ) |
| 2398 | { |
| 2399 | offset = -offset; |
| 2400 | } |
| 2401 | |
| 2402 | p += 2; |
| 2403 | } |
| 2404 | else |
| 2405 | { |
| 2406 | // the symbolic timezone given: may be either military timezone or one |
| 2407 | // of standard abbreviations |
| 2408 | if ( !*(p + 1) ) |
| 2409 | { |
| 2410 | // military: Z = UTC, J unused, A = -1, ..., Y = +12 |
| 2411 | static const int offsets[26] = |
| 2412 | { |
| 2413 | //A B C D E F G H I J K L M |
| 2414 | -1, -2, -3, -4, -5, -6, -7, -8, -9, 0, -10, -11, -12, |
| 2415 | //N O P R Q S T U V W Z Y Z |
| 2416 | +1, +2, +3, +4, +5, +6, +7, +8, +9, +10, +11, +12, 0 |
| 2417 | }; |
| 2418 | |
| 2419 | if ( *p < _T('A') || *p > _T('Z') || *p == _T('J') ) |
| 2420 | { |
| 2421 | wxLogDebug(_T("Invalid militaty timezone '%c'"), *p); |
| 2422 | |
| 2423 | return (wxChar *)NULL; |
| 2424 | } |
| 2425 | |
| 2426 | offset = offsets[*p++ - _T('A')]; |
| 2427 | } |
| 2428 | else |
| 2429 | { |
| 2430 | // abbreviation |
| 2431 | wxString tz = p; |
| 2432 | if ( tz == _T("UT") || tz == _T("UTC") || tz == _T("GMT") ) |
| 2433 | offset = 0; |
| 2434 | else if ( tz == _T("AST") ) |
| 2435 | offset = AST - GMT0; |
| 2436 | else if ( tz == _T("ADT") ) |
| 2437 | offset = ADT - GMT0; |
| 2438 | else if ( tz == _T("EST") ) |
| 2439 | offset = EST - GMT0; |
| 2440 | else if ( tz == _T("EDT") ) |
| 2441 | offset = EDT - GMT0; |
| 2442 | else if ( tz == _T("CST") ) |
| 2443 | offset = CST - GMT0; |
| 2444 | else if ( tz == _T("CDT") ) |
| 2445 | offset = CDT - GMT0; |
| 2446 | else if ( tz == _T("MST") ) |
| 2447 | offset = MST - GMT0; |
| 2448 | else if ( tz == _T("MDT") ) |
| 2449 | offset = MDT - GMT0; |
| 2450 | else if ( tz == _T("PST") ) |
| 2451 | offset = PST - GMT0; |
| 2452 | else if ( tz == _T("PDT") ) |
| 2453 | offset = PDT - GMT0; |
| 2454 | else |
| 2455 | { |
| 2456 | wxLogDebug(_T("Unknown RFC 822 timezone '%s'"), p); |
| 2457 | |
| 2458 | return (wxChar *)NULL; |
| 2459 | } |
| 2460 | |
| 2461 | p += tz.length(); |
| 2462 | } |
| 2463 | |
| 2464 | // make it minutes |
| 2465 | offset *= 60; |
| 2466 | } |
| 2467 | |
| 2468 | // the spec was correct |
| 2469 | Set(day, mon, year, hour, min, sec); |
| 2470 | MakeTimezone((wxDateTime_t)(60*offset)); |
| 2471 | |
| 2472 | return p; |
| 2473 | } |
| 2474 | |
| 2475 | const wxChar *wxDateTime::ParseFormat(const wxChar *date, |
| 2476 | const wxChar *format, |
| 2477 | const wxDateTime& dateDef) |
| 2478 | { |
| 2479 | wxCHECK_MSG( date && format, (wxChar *)NULL, |
| 2480 | _T("NULL pointer in wxDateTime::ParseFormat()") ); |
| 2481 | |
| 2482 | wxString str; |
| 2483 | unsigned long num; |
| 2484 | |
| 2485 | // what fields have we found? |
| 2486 | bool haveWDay = FALSE, |
| 2487 | haveYDay = FALSE, |
| 2488 | haveDay = FALSE, |
| 2489 | haveMon = FALSE, |
| 2490 | haveYear = FALSE, |
| 2491 | haveHour = FALSE, |
| 2492 | haveMin = FALSE, |
| 2493 | haveSec = FALSE; |
| 2494 | |
| 2495 | bool hourIsIn12hFormat = FALSE, // or in 24h one? |
| 2496 | isPM = FALSE; // AM by default |
| 2497 | |
| 2498 | // and the value of the items we have (init them to get rid of warnings) |
| 2499 | wxDateTime_t sec = 0, |
| 2500 | min = 0, |
| 2501 | hour = 0; |
| 2502 | WeekDay wday = Inv_WeekDay; |
| 2503 | wxDateTime_t yday = 0, |
| 2504 | mday = 0; |
| 2505 | wxDateTime::Month mon = Inv_Month; |
| 2506 | int year = 0; |
| 2507 | |
| 2508 | const wxChar *input = date; |
| 2509 | for ( const wxChar *fmt = format; *fmt; fmt++ ) |
| 2510 | { |
| 2511 | if ( *fmt != _T('%') ) |
| 2512 | { |
| 2513 | if ( wxIsspace(*fmt) ) |
| 2514 | { |
| 2515 | // a white space in the format string matches 0 or more white |
| 2516 | // spaces in the input |
| 2517 | while ( wxIsspace(*input) ) |
| 2518 | { |
| 2519 | input++; |
| 2520 | } |
| 2521 | } |
| 2522 | else // !space |
| 2523 | { |
| 2524 | // any other character (not whitespace, not '%') must be |
| 2525 | // matched by itself in the input |
| 2526 | if ( *input++ != *fmt ) |
| 2527 | { |
| 2528 | // no match |
| 2529 | return (wxChar *)NULL; |
| 2530 | } |
| 2531 | } |
| 2532 | |
| 2533 | // done with this format char |
| 2534 | continue; |
| 2535 | } |
| 2536 | |
| 2537 | // start of a format specification |
| 2538 | |
| 2539 | // parse the optional width |
| 2540 | size_t width = 0; |
| 2541 | while ( isdigit(*++fmt) ) |
| 2542 | { |
| 2543 | width *= 10; |
| 2544 | width += *fmt - _T('0'); |
| 2545 | } |
| 2546 | |
| 2547 | // then the format itself |
| 2548 | switch ( *fmt ) |
| 2549 | { |
| 2550 | case _T('a'): // a weekday name |
| 2551 | case _T('A'): |
| 2552 | { |
| 2553 | int flag = *fmt == _T('a') ? Name_Abbr : Name_Full; |
| 2554 | wday = GetWeekDayFromName(GetAlphaToken(input), flag); |
| 2555 | if ( wday == Inv_WeekDay ) |
| 2556 | { |
| 2557 | // no match |
| 2558 | return (wxChar *)NULL; |
| 2559 | } |
| 2560 | } |
| 2561 | haveWDay = TRUE; |
| 2562 | break; |
| 2563 | |
| 2564 | case _T('b'): // a month name |
| 2565 | case _T('B'): |
| 2566 | { |
| 2567 | int flag = *fmt == _T('b') ? Name_Abbr : Name_Full; |
| 2568 | mon = GetMonthFromName(GetAlphaToken(input), flag); |
| 2569 | if ( mon == Inv_Month ) |
| 2570 | { |
| 2571 | // no match |
| 2572 | return (wxChar *)NULL; |
| 2573 | } |
| 2574 | } |
| 2575 | haveMon = TRUE; |
| 2576 | break; |
| 2577 | |
| 2578 | case _T('c'): // locale default date and time representation |
| 2579 | { |
| 2580 | wxDateTime dt; |
| 2581 | |
| 2582 | // this is the format which corresponds to ctime() output |
| 2583 | // and strptime("%c") should parse it, so try it first |
| 2584 | static const wxChar *fmtCtime = _T("%a %b %d %H:%M:%S %Y"); |
| 2585 | |
| 2586 | const wxChar *result = dt.ParseFormat(input, fmtCtime); |
| 2587 | if ( !result ) |
| 2588 | { |
| 2589 | result = dt.ParseFormat(input, _T("%x %X")); |
| 2590 | } |
| 2591 | |
| 2592 | if ( !result ) |
| 2593 | { |
| 2594 | result = dt.ParseFormat(input, _T("%X %x")); |
| 2595 | } |
| 2596 | |
| 2597 | if ( !result ) |
| 2598 | { |
| 2599 | // we've tried everything and still no match |
| 2600 | return (wxChar *)NULL; |
| 2601 | } |
| 2602 | |
| 2603 | Tm tm = dt.GetTm(); |
| 2604 | |
| 2605 | haveDay = haveMon = haveYear = |
| 2606 | haveHour = haveMin = haveSec = TRUE; |
| 2607 | |
| 2608 | hour = tm.hour; |
| 2609 | min = tm.min; |
| 2610 | sec = tm.sec; |
| 2611 | |
| 2612 | year = tm.year; |
| 2613 | mon = tm.mon; |
| 2614 | mday = tm.mday; |
| 2615 | |
| 2616 | input = result; |
| 2617 | } |
| 2618 | break; |
| 2619 | |
| 2620 | case _T('d'): // day of a month (01-31) |
| 2621 | if ( !GetNumericToken(width, input, &num) || |
| 2622 | (num > 31) || (num < 1) ) |
| 2623 | { |
| 2624 | // no match |
| 2625 | return (wxChar *)NULL; |
| 2626 | } |
| 2627 | |
| 2628 | // we can't check whether the day range is correct yet, will |
| 2629 | // do it later - assume ok for now |
| 2630 | haveDay = TRUE; |
| 2631 | mday = (wxDateTime_t)num; |
| 2632 | break; |
| 2633 | |
| 2634 | case _T('H'): // hour in 24h format (00-23) |
| 2635 | if ( !GetNumericToken(width, input, &num) || (num > 23) ) |
| 2636 | { |
| 2637 | // no match |
| 2638 | return (wxChar *)NULL; |
| 2639 | } |
| 2640 | |
| 2641 | haveHour = TRUE; |
| 2642 | hour = (wxDateTime_t)num; |
| 2643 | break; |
| 2644 | |
| 2645 | case _T('I'): // hour in 12h format (01-12) |
| 2646 | if ( !GetNumericToken(width, input, &num) || !num || (num > 12) ) |
| 2647 | { |
| 2648 | // no match |
| 2649 | return (wxChar *)NULL; |
| 2650 | } |
| 2651 | |
| 2652 | haveHour = TRUE; |
| 2653 | hourIsIn12hFormat = TRUE; |
| 2654 | hour = (wxDateTime_t)(num % 12); // 12 should be 0 |
| 2655 | break; |
| 2656 | |
| 2657 | case _T('j'): // day of the year |
| 2658 | if ( !GetNumericToken(width, input, &num) || !num || (num > 366) ) |
| 2659 | { |
| 2660 | // no match |
| 2661 | return (wxChar *)NULL; |
| 2662 | } |
| 2663 | |
| 2664 | haveYDay = TRUE; |
| 2665 | yday = (wxDateTime_t)num; |
| 2666 | break; |
| 2667 | |
| 2668 | case _T('m'): // month as a number (01-12) |
| 2669 | if ( !GetNumericToken(width, input, &num) || !num || (num > 12) ) |
| 2670 | { |
| 2671 | // no match |
| 2672 | return (wxChar *)NULL; |
| 2673 | } |
| 2674 | |
| 2675 | haveMon = TRUE; |
| 2676 | mon = (Month)(num - 1); |
| 2677 | break; |
| 2678 | |
| 2679 | case _T('M'): // minute as a decimal number (00-59) |
| 2680 | if ( !GetNumericToken(width, input, &num) || (num > 59) ) |
| 2681 | { |
| 2682 | // no match |
| 2683 | return (wxChar *)NULL; |
| 2684 | } |
| 2685 | |
| 2686 | haveMin = TRUE; |
| 2687 | min = (wxDateTime_t)num; |
| 2688 | break; |
| 2689 | |
| 2690 | case _T('p'): // AM or PM string |
| 2691 | { |
| 2692 | wxString am, pm, token = GetAlphaToken(input); |
| 2693 | |
| 2694 | GetAmPmStrings(&am, &pm); |
| 2695 | if ( token.CmpNoCase(pm) == 0 ) |
| 2696 | { |
| 2697 | isPM = TRUE; |
| 2698 | } |
| 2699 | else if ( token.CmpNoCase(am) != 0 ) |
| 2700 | { |
| 2701 | // no match |
| 2702 | return (wxChar *)NULL; |
| 2703 | } |
| 2704 | } |
| 2705 | break; |
| 2706 | |
| 2707 | case _T('r'): // time as %I:%M:%S %p |
| 2708 | { |
| 2709 | wxDateTime dt; |
| 2710 | input = dt.ParseFormat(input, _T("%I:%M:%S %p")); |
| 2711 | if ( !input ) |
| 2712 | { |
| 2713 | // no match |
| 2714 | return (wxChar *)NULL; |
| 2715 | } |
| 2716 | |
| 2717 | haveHour = haveMin = haveSec = TRUE; |
| 2718 | |
| 2719 | Tm tm = dt.GetTm(); |
| 2720 | hour = tm.hour; |
| 2721 | min = tm.min; |
| 2722 | sec = tm.sec; |
| 2723 | } |
| 2724 | break; |
| 2725 | |
| 2726 | case _T('R'): // time as %H:%M |
| 2727 | { |
| 2728 | wxDateTime dt; |
| 2729 | input = dt.ParseFormat(input, _T("%H:%M")); |
| 2730 | if ( !input ) |
| 2731 | { |
| 2732 | // no match |
| 2733 | return (wxChar *)NULL; |
| 2734 | } |
| 2735 | |
| 2736 | haveHour = haveMin = TRUE; |
| 2737 | |
| 2738 | Tm tm = dt.GetTm(); |
| 2739 | hour = tm.hour; |
| 2740 | min = tm.min; |
| 2741 | } |
| 2742 | |
| 2743 | case _T('S'): // second as a decimal number (00-61) |
| 2744 | if ( !GetNumericToken(width, input, &num) || (num > 61) ) |
| 2745 | { |
| 2746 | // no match |
| 2747 | return (wxChar *)NULL; |
| 2748 | } |
| 2749 | |
| 2750 | haveSec = TRUE; |
| 2751 | sec = (wxDateTime_t)num; |
| 2752 | break; |
| 2753 | |
| 2754 | case _T('T'): // time as %H:%M:%S |
| 2755 | { |
| 2756 | wxDateTime dt; |
| 2757 | input = dt.ParseFormat(input, _T("%H:%M:%S")); |
| 2758 | if ( !input ) |
| 2759 | { |
| 2760 | // no match |
| 2761 | return (wxChar *)NULL; |
| 2762 | } |
| 2763 | |
| 2764 | haveHour = haveMin = haveSec = TRUE; |
| 2765 | |
| 2766 | Tm tm = dt.GetTm(); |
| 2767 | hour = tm.hour; |
| 2768 | min = tm.min; |
| 2769 | sec = tm.sec; |
| 2770 | } |
| 2771 | break; |
| 2772 | |
| 2773 | case _T('w'): // weekday as a number (0-6), Sunday = 0 |
| 2774 | if ( !GetNumericToken(width, input, &num) || (wday > 6) ) |
| 2775 | { |
| 2776 | // no match |
| 2777 | return (wxChar *)NULL; |
| 2778 | } |
| 2779 | |
| 2780 | haveWDay = TRUE; |
| 2781 | wday = (WeekDay)num; |
| 2782 | break; |
| 2783 | |
| 2784 | case _T('x'): // locale default date representation |
| 2785 | #ifdef HAVE_STRPTIME |
| 2786 | // try using strptime() - it may fail even if the input is |
| 2787 | // correct but the date is out of range, so we will fall back |
| 2788 | // to our generic code anyhow (FIXME !Unicode friendly) |
| 2789 | { |
| 2790 | struct tm tm; |
| 2791 | const wxChar *result = strptime(input, "%x", &tm); |
| 2792 | if ( result ) |
| 2793 | { |
| 2794 | input = result; |
| 2795 | |
| 2796 | haveDay = haveMon = haveYear = TRUE; |
| 2797 | |
| 2798 | year = 1900 + tm.tm_year; |
| 2799 | mon = (Month)tm.tm_mon; |
| 2800 | mday = tm.tm_mday; |
| 2801 | |
| 2802 | break; |
| 2803 | } |
| 2804 | } |
| 2805 | #endif // HAVE_STRPTIME |
| 2806 | |
| 2807 | // TODO query the LOCALE_IDATE setting under Win32 |
| 2808 | { |
| 2809 | wxDateTime dt; |
| 2810 | |
| 2811 | wxString fmtDate, fmtDateAlt; |
| 2812 | if ( IsWestEuropeanCountry(GetCountry()) || |
| 2813 | GetCountry() == Russia ) |
| 2814 | { |
| 2815 | fmtDate = _T("%d/%m/%y"); |
| 2816 | fmtDateAlt = _T("%m/%d/%y"); |
| 2817 | } |
| 2818 | else // assume USA |
| 2819 | { |
| 2820 | fmtDate = _T("%m/%d/%y"); |
| 2821 | fmtDateAlt = _T("%d/%m/%y"); |
| 2822 | } |
| 2823 | |
| 2824 | const wxChar *result = dt.ParseFormat(input, fmtDate); |
| 2825 | |
| 2826 | if ( !result ) |
| 2827 | { |
| 2828 | // ok, be nice and try another one |
| 2829 | result = dt.ParseFormat(input, fmtDateAlt); |
| 2830 | } |
| 2831 | |
| 2832 | if ( !result ) |
| 2833 | { |
| 2834 | // bad luck |
| 2835 | return (wxChar *)NULL; |
| 2836 | } |
| 2837 | |
| 2838 | Tm tm = dt.GetTm(); |
| 2839 | |
| 2840 | haveDay = haveMon = haveYear = TRUE; |
| 2841 | |
| 2842 | year = tm.year; |
| 2843 | mon = tm.mon; |
| 2844 | mday = tm.mday; |
| 2845 | |
| 2846 | input = result; |
| 2847 | } |
| 2848 | |
| 2849 | break; |
| 2850 | |
| 2851 | case _T('X'): // locale default time representation |
| 2852 | #ifdef HAVE_STRPTIME |
| 2853 | { |
| 2854 | // use strptime() to do it for us (FIXME !Unicode friendly) |
| 2855 | struct tm tm; |
| 2856 | input = strptime(input, "%X", &tm); |
| 2857 | if ( !input ) |
| 2858 | { |
| 2859 | return (wxChar *)NULL; |
| 2860 | } |
| 2861 | |
| 2862 | haveHour = haveMin = haveSec = TRUE; |
| 2863 | |
| 2864 | hour = tm.tm_hour; |
| 2865 | min = tm.tm_min; |
| 2866 | sec = tm.tm_sec; |
| 2867 | } |
| 2868 | #else // !HAVE_STRPTIME |
| 2869 | // TODO under Win32 we can query the LOCALE_ITIME system |
| 2870 | // setting which says whether the default time format is |
| 2871 | // 24 or 12 hour |
| 2872 | { |
| 2873 | // try to parse what follows as "%H:%M:%S" and, if this |
| 2874 | // fails, as "%I:%M:%S %p" - this should catch the most |
| 2875 | // common cases |
| 2876 | wxDateTime dt; |
| 2877 | |
| 2878 | const wxChar *result = dt.ParseFormat(input, _T("%T")); |
| 2879 | if ( !result ) |
| 2880 | { |
| 2881 | result = dt.ParseFormat(input, _T("%r")); |
| 2882 | } |
| 2883 | |
| 2884 | if ( !result ) |
| 2885 | { |
| 2886 | // no match |
| 2887 | return (wxChar *)NULL; |
| 2888 | } |
| 2889 | |
| 2890 | haveHour = haveMin = haveSec = TRUE; |
| 2891 | |
| 2892 | Tm tm = dt.GetTm(); |
| 2893 | hour = tm.hour; |
| 2894 | min = tm.min; |
| 2895 | sec = tm.sec; |
| 2896 | |
| 2897 | input = result; |
| 2898 | } |
| 2899 | #endif // HAVE_STRPTIME/!HAVE_STRPTIME |
| 2900 | break; |
| 2901 | |
| 2902 | case _T('y'): // year without century (00-99) |
| 2903 | if ( !GetNumericToken(width, input, &num) || (num > 99) ) |
| 2904 | { |
| 2905 | // no match |
| 2906 | return (wxChar *)NULL; |
| 2907 | } |
| 2908 | |
| 2909 | haveYear = TRUE; |
| 2910 | |
| 2911 | // TODO should have an option for roll over date instead of |
| 2912 | // hard coding it here |
| 2913 | year = (num > 30 ? 1900 : 2000) + (wxDateTime_t)num; |
| 2914 | break; |
| 2915 | |
| 2916 | case _T('Y'): // year with century |
| 2917 | if ( !GetNumericToken(width, input, &num) ) |
| 2918 | { |
| 2919 | // no match |
| 2920 | return (wxChar *)NULL; |
| 2921 | } |
| 2922 | |
| 2923 | haveYear = TRUE; |
| 2924 | year = (wxDateTime_t)num; |
| 2925 | break; |
| 2926 | |
| 2927 | case _T('Z'): // timezone name |
| 2928 | wxFAIL_MSG(_T("TODO")); |
| 2929 | break; |
| 2930 | |
| 2931 | case _T('%'): // a percent sign |
| 2932 | if ( *input++ != _T('%') ) |
| 2933 | { |
| 2934 | // no match |
| 2935 | return (wxChar *)NULL; |
| 2936 | } |
| 2937 | break; |
| 2938 | |
| 2939 | case 0: // the end of string |
| 2940 | wxFAIL_MSG(_T("unexpected format end")); |
| 2941 | |
| 2942 | // fall through |
| 2943 | |
| 2944 | default: // not a known format spec |
| 2945 | return (wxChar *)NULL; |
| 2946 | } |
| 2947 | } |
| 2948 | |
| 2949 | // format matched, try to construct a date from what we have now |
| 2950 | Tm tmDef; |
| 2951 | if ( dateDef.IsValid() ) |
| 2952 | { |
| 2953 | // take this date as default |
| 2954 | tmDef = dateDef.GetTm(); |
| 2955 | } |
| 2956 | else if ( IsValid() ) |
| 2957 | { |
| 2958 | // if this date is valid, don't change it |
| 2959 | tmDef = GetTm(); |
| 2960 | } |
| 2961 | else |
| 2962 | { |
| 2963 | // no default and this date is invalid - fall back to Today() |
| 2964 | tmDef = Today().GetTm(); |
| 2965 | } |
| 2966 | |
| 2967 | Tm tm = tmDef; |
| 2968 | |
| 2969 | // set the date |
| 2970 | if ( haveYear ) |
| 2971 | { |
| 2972 | tm.year = year; |
| 2973 | } |
| 2974 | |
| 2975 | // TODO we don't check here that the values are consistent, if both year |
| 2976 | // day and month/day were found, we just ignore the year day and we |
| 2977 | // also always ignore the week day |
| 2978 | if ( haveMon && haveDay ) |
| 2979 | { |
| 2980 | if ( mday > GetNumOfDaysInMonth(tm.year, mon) ) |
| 2981 | { |
| 2982 | wxLogDebug(_T("bad month day in wxDateTime::ParseFormat")); |
| 2983 | |
| 2984 | return (wxChar *)NULL; |
| 2985 | } |
| 2986 | |
| 2987 | tm.mon = mon; |
| 2988 | tm.mday = mday; |
| 2989 | } |
| 2990 | else if ( haveYDay ) |
| 2991 | { |
| 2992 | if ( yday > GetNumberOfDays(tm.year) ) |
| 2993 | { |
| 2994 | wxLogDebug(_T("bad year day in wxDateTime::ParseFormat")); |
| 2995 | |
| 2996 | return (wxChar *)NULL; |
| 2997 | } |
| 2998 | |
| 2999 | Tm tm2 = wxDateTime(1, Jan, tm.year).SetToYearDay(yday).GetTm(); |
| 3000 | |
| 3001 | tm.mon = tm2.mon; |
| 3002 | tm.mday = tm2.mday; |
| 3003 | } |
| 3004 | |
| 3005 | // deal with AM/PM |
| 3006 | if ( haveHour && hourIsIn12hFormat && isPM ) |
| 3007 | { |
| 3008 | // translate to 24hour format |
| 3009 | hour += 12; |
| 3010 | } |
| 3011 | //else: either already in 24h format or no translation needed |
| 3012 | |
| 3013 | // set the time |
| 3014 | if ( haveHour ) |
| 3015 | { |
| 3016 | tm.hour = hour; |
| 3017 | } |
| 3018 | |
| 3019 | if ( haveMin ) |
| 3020 | { |
| 3021 | tm.min = min; |
| 3022 | } |
| 3023 | |
| 3024 | if ( haveSec ) |
| 3025 | { |
| 3026 | tm.sec = sec; |
| 3027 | } |
| 3028 | |
| 3029 | Set(tm); |
| 3030 | |
| 3031 | return input; |
| 3032 | } |
| 3033 | |
| 3034 | const wxChar *wxDateTime::ParseDateTime(const wxChar *date) |
| 3035 | { |
| 3036 | wxCHECK_MSG( date, (wxChar *)NULL, _T("NULL pointer in wxDateTime::Parse") ); |
| 3037 | |
| 3038 | // there is a public domain version of getdate.y, but it only works for |
| 3039 | // English... |
| 3040 | wxFAIL_MSG(_T("TODO")); |
| 3041 | |
| 3042 | return (wxChar *)NULL; |
| 3043 | } |
| 3044 | |
| 3045 | const wxChar *wxDateTime::ParseDate(const wxChar *date) |
| 3046 | { |
| 3047 | // this is a simplified version of ParseDateTime() which understands only |
| 3048 | // "today" (for wxDate compatibility) and digits only otherwise (and not |
| 3049 | // all esoteric constructions ParseDateTime() knows about) |
| 3050 | |
| 3051 | wxCHECK_MSG( date, (wxChar *)NULL, _T("NULL pointer in wxDateTime::Parse") ); |
| 3052 | |
| 3053 | const wxChar *p = date; |
| 3054 | while ( wxIsspace(*p) ) |
| 3055 | p++; |
| 3056 | |
| 3057 | // some special cases |
| 3058 | static struct |
| 3059 | { |
| 3060 | const wxChar *str; |
| 3061 | int dayDiffFromToday; |
| 3062 | } literalDates[] = |
| 3063 | { |
| 3064 | { wxTRANSLATE("today"), 0 }, |
| 3065 | { wxTRANSLATE("yesterday"), -1 }, |
| 3066 | { wxTRANSLATE("tomorrow"), 1 }, |
| 3067 | }; |
| 3068 | |
| 3069 | for ( size_t n = 0; n < WXSIZEOF(literalDates); n++ ) |
| 3070 | { |
| 3071 | wxString date = wxGetTranslation(literalDates[n].str); |
| 3072 | size_t len = date.length(); |
| 3073 | if ( wxStrlen(p) >= len && (wxString(p, len).CmpNoCase(date) == 0) ) |
| 3074 | { |
| 3075 | // nothing can follow this, so stop here |
| 3076 | p += len; |
| 3077 | |
| 3078 | int dayDiffFromToday = literalDates[n].dayDiffFromToday; |
| 3079 | *this = Today(); |
| 3080 | if ( dayDiffFromToday ) |
| 3081 | { |
| 3082 | *this += wxDateSpan::Days(dayDiffFromToday); |
| 3083 | } |
| 3084 | |
| 3085 | return p; |
| 3086 | } |
| 3087 | } |
| 3088 | |
| 3089 | // We try to guess what we have here: for each new (numeric) token, we |
| 3090 | // determine if it can be a month, day or a year. Of course, there is an |
| 3091 | // ambiguity as some numbers may be days as well as months, so we also |
| 3092 | // have the ability to back track. |
| 3093 | |
| 3094 | // what do we have? |
| 3095 | bool haveDay = FALSE, // the months day? |
| 3096 | haveWDay = FALSE, // the day of week? |
| 3097 | haveMon = FALSE, // the month? |
| 3098 | haveYear = FALSE; // the year? |
| 3099 | |
| 3100 | // and the value of the items we have (init them to get rid of warnings) |
| 3101 | WeekDay wday = Inv_WeekDay; |
| 3102 | wxDateTime_t day = 0; |
| 3103 | wxDateTime::Month mon = Inv_Month; |
| 3104 | int year = 0; |
| 3105 | |
| 3106 | // tokenize the string |
| 3107 | size_t nPosCur = 0; |
| 3108 | static const wxChar *dateDelimiters = _T(".,/-\t\n "); |
| 3109 | wxStringTokenizer tok(p, dateDelimiters); |
| 3110 | while ( tok.HasMoreTokens() ) |
| 3111 | { |
| 3112 | wxString token = tok.GetNextToken(); |
| 3113 | if ( !token ) |
| 3114 | continue; |
| 3115 | |
| 3116 | // is it a number? |
| 3117 | unsigned long val; |
| 3118 | if ( token.ToULong(&val) ) |
| 3119 | { |
| 3120 | // guess what this number is |
| 3121 | |
| 3122 | bool isDay = FALSE, |
| 3123 | isMonth = FALSE, |
| 3124 | isYear = FALSE; |
| 3125 | |
| 3126 | if ( !haveMon && val > 0 && val <= 12 ) |
| 3127 | { |
| 3128 | // assume it is month |
| 3129 | isMonth = TRUE; |
| 3130 | } |
| 3131 | else // not the month |
| 3132 | { |
| 3133 | wxDateTime_t maxDays = haveMon |
| 3134 | ? GetNumOfDaysInMonth(haveYear ? year : Inv_Year, mon) |
| 3135 | : 31; |
| 3136 | |
| 3137 | // can it be day? |
| 3138 | if ( (val == 0) || (val > (unsigned long)maxDays) ) // cast to shut up compiler warning in BCC |
| 3139 | { |
| 3140 | isYear = TRUE; |
| 3141 | } |
| 3142 | else |
| 3143 | { |
| 3144 | isDay = TRUE; |
| 3145 | } |
| 3146 | } |
| 3147 | |
| 3148 | if ( isYear ) |
| 3149 | { |
| 3150 | if ( haveYear ) |
| 3151 | break; |
| 3152 | |
| 3153 | haveYear = TRUE; |
| 3154 | |
| 3155 | year = (wxDateTime_t)val; |
| 3156 | } |
| 3157 | else if ( isDay ) |
| 3158 | { |
| 3159 | if ( haveDay ) |
| 3160 | break; |
| 3161 | |
| 3162 | haveDay = TRUE; |
| 3163 | |
| 3164 | day = (wxDateTime_t)val; |
| 3165 | } |
| 3166 | else if ( isMonth ) |
| 3167 | { |
| 3168 | haveMon = TRUE; |
| 3169 | |
| 3170 | mon = (Month)(val - 1); |
| 3171 | } |
| 3172 | } |
| 3173 | else // not a number |
| 3174 | { |
| 3175 | // be careful not to overwrite the current mon value |
| 3176 | Month mon2 = GetMonthFromName(token, Name_Full | Name_Abbr); |
| 3177 | if ( mon2 != Inv_Month ) |
| 3178 | { |
| 3179 | // it's a month |
| 3180 | if ( haveMon ) |
| 3181 | { |
| 3182 | // but we already have a month - maybe we guessed wrong? |
| 3183 | if ( !haveDay ) |
| 3184 | { |
| 3185 | // no need to check in month range as always < 12, but |
| 3186 | // the days are counted from 1 unlike the months |
| 3187 | day = (wxDateTime_t)mon + 1; |
| 3188 | haveDay = TRUE; |
| 3189 | } |
| 3190 | else |
| 3191 | { |
| 3192 | // could possible be the year (doesn't the year come |
| 3193 | // before the month in the japanese format?) (FIXME) |
| 3194 | break; |
| 3195 | } |
| 3196 | } |
| 3197 | |
| 3198 | mon = mon2; |
| 3199 | |
| 3200 | haveMon = TRUE; |
| 3201 | } |
| 3202 | else // not a valid month name |
| 3203 | { |
| 3204 | wday = GetWeekDayFromName(token, Name_Full | Name_Abbr); |
| 3205 | if ( wday != Inv_WeekDay ) |
| 3206 | { |
| 3207 | // a week day |
| 3208 | if ( haveWDay ) |
| 3209 | { |
| 3210 | break; |
| 3211 | } |
| 3212 | |
| 3213 | haveWDay = TRUE; |
| 3214 | } |
| 3215 | else // not a valid weekday name |
| 3216 | { |
| 3217 | // try the ordinals |
| 3218 | static const wxChar *ordinals[] = |
| 3219 | { |
| 3220 | wxTRANSLATE("first"), |
| 3221 | wxTRANSLATE("second"), |
| 3222 | wxTRANSLATE("third"), |
| 3223 | wxTRANSLATE("fourth"), |
| 3224 | wxTRANSLATE("fifth"), |
| 3225 | wxTRANSLATE("sixth"), |
| 3226 | wxTRANSLATE("seventh"), |
| 3227 | wxTRANSLATE("eighth"), |
| 3228 | wxTRANSLATE("ninth"), |
| 3229 | wxTRANSLATE("tenth"), |
| 3230 | wxTRANSLATE("eleventh"), |
| 3231 | wxTRANSLATE("twelfth"), |
| 3232 | wxTRANSLATE("thirteenth"), |
| 3233 | wxTRANSLATE("fourteenth"), |
| 3234 | wxTRANSLATE("fifteenth"), |
| 3235 | wxTRANSLATE("sixteenth"), |
| 3236 | wxTRANSLATE("seventeenth"), |
| 3237 | wxTRANSLATE("eighteenth"), |
| 3238 | wxTRANSLATE("nineteenth"), |
| 3239 | wxTRANSLATE("twentieth"), |
| 3240 | // that's enough - otherwise we'd have problems with |
| 3241 | // composite (or not) ordinals |
| 3242 | }; |
| 3243 | |
| 3244 | size_t n; |
| 3245 | for ( n = 0; n < WXSIZEOF(ordinals); n++ ) |
| 3246 | { |
| 3247 | if ( token.CmpNoCase(ordinals[n]) == 0 ) |
| 3248 | { |
| 3249 | break; |
| 3250 | } |
| 3251 | } |
| 3252 | |
| 3253 | if ( n == WXSIZEOF(ordinals) ) |
| 3254 | { |
| 3255 | // stop here - something unknown |
| 3256 | break; |
| 3257 | } |
| 3258 | |
| 3259 | // it's a day |
| 3260 | if ( haveDay ) |
| 3261 | { |
| 3262 | // don't try anything here (as in case of numeric day |
| 3263 | // above) - the symbolic day spec should always |
| 3264 | // precede the month/year |
| 3265 | break; |
| 3266 | } |
| 3267 | |
| 3268 | haveDay = TRUE; |
| 3269 | |
| 3270 | day = (wxDateTime_t)(n + 1); |
| 3271 | } |
| 3272 | } |
| 3273 | } |
| 3274 | |
| 3275 | nPosCur = tok.GetPosition(); |
| 3276 | } |
| 3277 | |
| 3278 | // either no more tokens or the scan was stopped by something we couldn't |
| 3279 | // parse - in any case, see if we can construct a date from what we have |
| 3280 | if ( !haveDay && !haveWDay ) |
| 3281 | { |
| 3282 | wxLogDebug(_T("ParseDate: no day, no weekday hence no date.")); |
| 3283 | |
| 3284 | return (wxChar *)NULL; |
| 3285 | } |
| 3286 | |
| 3287 | if ( haveWDay && (haveMon || haveYear || haveDay) && |
| 3288 | !(haveDay && haveMon && haveYear) ) |
| 3289 | { |
| 3290 | // without adjectives (which we don't support here) the week day only |
| 3291 | // makes sense completely separately or with the full date |
| 3292 | // specification (what would "Wed 1999" mean?) |
| 3293 | return (wxChar *)NULL; |
| 3294 | } |
| 3295 | |
| 3296 | if ( !haveWDay && haveYear && !(haveDay && haveMon) ) |
| 3297 | { |
| 3298 | // may be we have month and day instead of day and year? |
| 3299 | if ( haveDay && !haveMon ) |
| 3300 | { |
| 3301 | if ( day <= 12 ) |
| 3302 | { |
| 3303 | // exchange day and month |
| 3304 | mon = (wxDateTime::Month)(day - 1); |
| 3305 | |
| 3306 | // we're in the current year then |
| 3307 | if ( (year > 0) && |
| 3308 | (unsigned)year <= GetNumOfDaysInMonth(Inv_Year, mon) ) |
| 3309 | { |
| 3310 | day = year; |
| 3311 | |
| 3312 | haveMon = TRUE; |
| 3313 | haveYear = FALSE; |
| 3314 | } |
| 3315 | //else: no, can't exchange, leave haveMon == FALSE |
| 3316 | } |
| 3317 | } |
| 3318 | |
| 3319 | if ( !haveMon ) |
| 3320 | { |
| 3321 | // if we give the year, month and day must be given too |
| 3322 | wxLogDebug(_T("ParseDate: day and month should be specified if year is.")); |
| 3323 | |
| 3324 | return (wxChar *)NULL; |
| 3325 | } |
| 3326 | } |
| 3327 | |
| 3328 | if ( !haveMon ) |
| 3329 | { |
| 3330 | mon = GetCurrentMonth(); |
| 3331 | } |
| 3332 | |
| 3333 | if ( !haveYear ) |
| 3334 | { |
| 3335 | year = GetCurrentYear(); |
| 3336 | } |
| 3337 | |
| 3338 | if ( haveDay ) |
| 3339 | { |
| 3340 | Set(day, mon, year); |
| 3341 | |
| 3342 | if ( haveWDay ) |
| 3343 | { |
| 3344 | // check that it is really the same |
| 3345 | if ( GetWeekDay() != wday ) |
| 3346 | { |
| 3347 | // inconsistency detected |
| 3348 | wxLogDebug(_T("ParseDate: inconsistent day/weekday.")); |
| 3349 | |
| 3350 | return (wxChar *)NULL; |
| 3351 | } |
| 3352 | } |
| 3353 | } |
| 3354 | else // haveWDay |
| 3355 | { |
| 3356 | *this = Today(); |
| 3357 | |
| 3358 | SetToWeekDayInSameWeek(wday); |
| 3359 | } |
| 3360 | |
| 3361 | // return the pointer to the first unparsed char |
| 3362 | p += nPosCur; |
| 3363 | if ( nPosCur && wxStrchr(dateDelimiters, *(p - 1)) ) |
| 3364 | { |
| 3365 | // if we couldn't parse the token after the delimiter, put back the |
| 3366 | // delimiter as well |
| 3367 | p--; |
| 3368 | } |
| 3369 | |
| 3370 | return p; |
| 3371 | } |
| 3372 | |
| 3373 | const wxChar *wxDateTime::ParseTime(const wxChar *time) |
| 3374 | { |
| 3375 | wxCHECK_MSG( time, (wxChar *)NULL, _T("NULL pointer in wxDateTime::Parse") ); |
| 3376 | |
| 3377 | // first try some extra things |
| 3378 | static const struct |
| 3379 | { |
| 3380 | const wxChar *name; |
| 3381 | wxDateTime_t hour; |
| 3382 | } stdTimes[] = |
| 3383 | { |
| 3384 | { wxTRANSLATE("noon"), 12 }, |
| 3385 | { wxTRANSLATE("midnight"), 00 }, |
| 3386 | // anything else? |
| 3387 | }; |
| 3388 | |
| 3389 | for ( size_t n = 0; n < WXSIZEOF(stdTimes); n++ ) |
| 3390 | { |
| 3391 | wxString timeString = wxGetTranslation(stdTimes[n].name); |
| 3392 | size_t len = timeString.length(); |
| 3393 | if ( timeString.CmpNoCase(wxString(time, len)) == 0 ) |
| 3394 | { |
| 3395 | Set(stdTimes[n].hour, 0, 0); |
| 3396 | |
| 3397 | return time + len; |
| 3398 | } |
| 3399 | } |
| 3400 | |
| 3401 | // try all time formats we may think about in the order from longest to |
| 3402 | // shortest |
| 3403 | |
| 3404 | // 12hour with AM/PM? |
| 3405 | const wxChar *result = ParseFormat(time, _T("%I:%M:%S %p")); |
| 3406 | |
| 3407 | if ( !result ) |
| 3408 | { |
| 3409 | // normally, it's the same, but why not try it? |
| 3410 | result = ParseFormat(time, _T("%H:%M:%S")); |
| 3411 | } |
| 3412 | |
| 3413 | if ( !result ) |
| 3414 | { |
| 3415 | // 12hour with AM/PM but without seconds? |
| 3416 | result = ParseFormat(time, _T("%I:%M %p")); |
| 3417 | } |
| 3418 | |
| 3419 | if ( !result ) |
| 3420 | { |
| 3421 | // without seconds? |
| 3422 | result = ParseFormat(time, _T("%H:%M")); |
| 3423 | } |
| 3424 | |
| 3425 | if ( !result ) |
| 3426 | { |
| 3427 | // just the hour and AM/PM? |
| 3428 | result = ParseFormat(time, _T("%I %p")); |
| 3429 | } |
| 3430 | |
| 3431 | if ( !result ) |
| 3432 | { |
| 3433 | // just the hour? |
| 3434 | result = ParseFormat(time, _T("%H")); |
| 3435 | } |
| 3436 | |
| 3437 | if ( !result ) |
| 3438 | { |
| 3439 | // parse the standard format: normally it is one of the formats above |
| 3440 | // but it may be set to something completely different by the user |
| 3441 | result = ParseFormat(time, _T("%X")); |
| 3442 | } |
| 3443 | |
| 3444 | // TODO: parse timezones |
| 3445 | |
| 3446 | return result; |
| 3447 | } |
| 3448 | |
| 3449 | // ---------------------------------------------------------------------------- |
| 3450 | // Workdays and holidays support |
| 3451 | // ---------------------------------------------------------------------------- |
| 3452 | |
| 3453 | bool wxDateTime::IsWorkDay(Country WXUNUSED(country)) const |
| 3454 | { |
| 3455 | return !wxDateTimeHolidayAuthority::IsHoliday(*this); |
| 3456 | } |
| 3457 | |
| 3458 | // ============================================================================ |
| 3459 | // wxTimeSpan |
| 3460 | // ============================================================================ |
| 3461 | |
| 3462 | // this enum is only used in wxTimeSpan::Format() below but we can't declare |
| 3463 | // it locally to the method as it provokes an internal compiler error in egcs |
| 3464 | // 2.91.60 when building with -O2 |
| 3465 | enum TimeSpanPart |
| 3466 | { |
| 3467 | Part_Week, |
| 3468 | Part_Day, |
| 3469 | Part_Hour, |
| 3470 | Part_Min, |
| 3471 | Part_Sec, |
| 3472 | Part_MSec |
| 3473 | }; |
| 3474 | |
| 3475 | // not all strftime(3) format specifiers make sense here because, for example, |
| 3476 | // a time span doesn't have a year nor a timezone |
| 3477 | // |
| 3478 | // Here are the ones which are supported (all of them are supported by strftime |
| 3479 | // as well): |
| 3480 | // %H hour in 24 hour format |
| 3481 | // %M minute (00 - 59) |
| 3482 | // %S second (00 - 59) |
| 3483 | // %% percent sign |
| 3484 | // |
| 3485 | // Also, for MFC CTimeSpan compatibility, we support |
| 3486 | // %D number of days |
| 3487 | // |
| 3488 | // And, to be better than MFC :-), we also have |
| 3489 | // %E number of wEeks |
| 3490 | // %l milliseconds (000 - 999) |
| 3491 | wxString wxTimeSpan::Format(const wxChar *format) const |
| 3492 | { |
| 3493 | wxCHECK_MSG( format, _T(""), _T("NULL format in wxTimeSpan::Format") ); |
| 3494 | |
| 3495 | wxString str; |
| 3496 | str.Alloc(wxStrlen(format)); |
| 3497 | |
| 3498 | // Suppose we have wxTimeSpan ts(1 /* hour */, 2 /* min */, 3 /* sec */) |
| 3499 | // |
| 3500 | // Then, of course, ts.Format("%H:%M:%S") must return "01:02:03", but the |
| 3501 | // question is what should ts.Format("%S") do? The code here returns "3273" |
| 3502 | // in this case (i.e. the total number of seconds, not just seconds % 60) |
| 3503 | // because, for me, this call means "give me entire time interval in |
| 3504 | // seconds" and not "give me the seconds part of the time interval" |
| 3505 | // |
| 3506 | // If we agree that it should behave like this, it is clear that the |
| 3507 | // interpretation of each format specifier depends on the presence of the |
| 3508 | // other format specs in the string: if there was "%H" before "%M", we |
| 3509 | // should use GetMinutes() % 60, otherwise just GetMinutes() &c |
| 3510 | |
| 3511 | // we remember the most important unit found so far |
| 3512 | TimeSpanPart partBiggest = Part_MSec; |
| 3513 | |
| 3514 | for ( const wxChar *pch = format; *pch; pch++ ) |
| 3515 | { |
| 3516 | wxChar ch = *pch; |
| 3517 | |
| 3518 | if ( ch == _T('%') ) |
| 3519 | { |
| 3520 | // the start of the format specification of the printf() below |
| 3521 | wxString fmtPrefix = _T('%'); |
| 3522 | |
| 3523 | // the number |
| 3524 | long n; |
| 3525 | |
| 3526 | ch = *++pch; // get the format spec char |
| 3527 | switch ( ch ) |
| 3528 | { |
| 3529 | default: |
| 3530 | wxFAIL_MSG( _T("invalid format character") ); |
| 3531 | // fall through |
| 3532 | |
| 3533 | case _T('%'): |
| 3534 | str += ch; |
| 3535 | |
| 3536 | // skip the part below switch |
| 3537 | continue; |
| 3538 | |
| 3539 | case _T('D'): |
| 3540 | n = GetDays(); |
| 3541 | if ( partBiggest < Part_Day ) |
| 3542 | { |
| 3543 | n %= DAYS_PER_WEEK; |
| 3544 | } |
| 3545 | else |
| 3546 | { |
| 3547 | partBiggest = Part_Day; |
| 3548 | } |
| 3549 | break; |
| 3550 | |
| 3551 | case _T('E'): |
| 3552 | partBiggest = Part_Week; |
| 3553 | n = GetWeeks(); |
| 3554 | break; |
| 3555 | |
| 3556 | case _T('H'): |
| 3557 | n = GetHours(); |
| 3558 | if ( partBiggest < Part_Hour ) |
| 3559 | { |
| 3560 | n %= HOURS_PER_DAY; |
| 3561 | } |
| 3562 | else |
| 3563 | { |
| 3564 | partBiggest = Part_Hour; |
| 3565 | } |
| 3566 | |
| 3567 | fmtPrefix += _T("02"); |
| 3568 | break; |
| 3569 | |
| 3570 | case _T('l'): |
| 3571 | n = GetMilliseconds().ToLong(); |
| 3572 | if ( partBiggest < Part_MSec ) |
| 3573 | { |
| 3574 | n %= 1000; |
| 3575 | } |
| 3576 | //else: no need to reset partBiggest to Part_MSec, it is |
| 3577 | // the least significant one anyhow |
| 3578 | |
| 3579 | fmtPrefix += _T("03"); |
| 3580 | break; |
| 3581 | |
| 3582 | case _T('M'): |
| 3583 | n = GetMinutes(); |
| 3584 | if ( partBiggest < Part_Min ) |
| 3585 | { |
| 3586 | n %= MIN_PER_HOUR; |
| 3587 | } |
| 3588 | else |
| 3589 | { |
| 3590 | partBiggest = Part_Min; |
| 3591 | } |
| 3592 | |
| 3593 | fmtPrefix += _T("02"); |
| 3594 | break; |
| 3595 | |
| 3596 | case _T('S'): |
| 3597 | n = GetSeconds().ToLong(); |
| 3598 | if ( partBiggest < Part_Sec ) |
| 3599 | { |
| 3600 | n %= SEC_PER_MIN; |
| 3601 | } |
| 3602 | else |
| 3603 | { |
| 3604 | partBiggest = Part_Sec; |
| 3605 | } |
| 3606 | |
| 3607 | fmtPrefix += _T("02"); |
| 3608 | break; |
| 3609 | } |
| 3610 | |
| 3611 | str += wxString::Format(fmtPrefix + _T("ld"), n); |
| 3612 | } |
| 3613 | else |
| 3614 | { |
| 3615 | // normal character, just copy |
| 3616 | str += ch; |
| 3617 | } |
| 3618 | } |
| 3619 | |
| 3620 | return str; |
| 3621 | } |
| 3622 | |
| 3623 | // ============================================================================ |
| 3624 | // wxDateTimeHolidayAuthority and related classes |
| 3625 | // ============================================================================ |
| 3626 | |
| 3627 | #include "wx/arrimpl.cpp" |
| 3628 | |
| 3629 | WX_DEFINE_OBJARRAY(wxDateTimeArray); |
| 3630 | |
| 3631 | static int wxCMPFUNC_CONV |
| 3632 | wxDateTimeCompareFunc(wxDateTime **first, wxDateTime **second) |
| 3633 | { |
| 3634 | wxDateTime dt1 = **first, |
| 3635 | dt2 = **second; |
| 3636 | |
| 3637 | return dt1 == dt2 ? 0 : dt1 < dt2 ? -1 : +1; |
| 3638 | } |
| 3639 | |
| 3640 | // ---------------------------------------------------------------------------- |
| 3641 | // wxDateTimeHolidayAuthority |
| 3642 | // ---------------------------------------------------------------------------- |
| 3643 | |
| 3644 | wxHolidayAuthoritiesArray wxDateTimeHolidayAuthority::ms_authorities; |
| 3645 | |
| 3646 | /* static */ |
| 3647 | bool wxDateTimeHolidayAuthority::IsHoliday(const wxDateTime& dt) |
| 3648 | { |
| 3649 | size_t count = ms_authorities.GetCount(); |
| 3650 | for ( size_t n = 0; n < count; n++ ) |
| 3651 | { |
| 3652 | if ( ms_authorities[n]->DoIsHoliday(dt) ) |
| 3653 | { |
| 3654 | return TRUE; |
| 3655 | } |
| 3656 | } |
| 3657 | |
| 3658 | return FALSE; |
| 3659 | } |
| 3660 | |
| 3661 | /* static */ |
| 3662 | size_t |
| 3663 | wxDateTimeHolidayAuthority::GetHolidaysInRange(const wxDateTime& dtStart, |
| 3664 | const wxDateTime& dtEnd, |
| 3665 | wxDateTimeArray& holidays) |
| 3666 | { |
| 3667 | wxDateTimeArray hol; |
| 3668 | |
| 3669 | holidays.Empty(); |
| 3670 | |
| 3671 | size_t count = ms_authorities.GetCount(); |
| 3672 | for ( size_t nAuth = 0; nAuth < count; nAuth++ ) |
| 3673 | { |
| 3674 | ms_authorities[nAuth]->DoGetHolidaysInRange(dtStart, dtEnd, hol); |
| 3675 | |
| 3676 | WX_APPEND_ARRAY(holidays, hol); |
| 3677 | } |
| 3678 | |
| 3679 | holidays.Sort(wxDateTimeCompareFunc); |
| 3680 | |
| 3681 | return holidays.GetCount(); |
| 3682 | } |
| 3683 | |
| 3684 | /* static */ |
| 3685 | void wxDateTimeHolidayAuthority::ClearAllAuthorities() |
| 3686 | { |
| 3687 | WX_CLEAR_ARRAY(ms_authorities); |
| 3688 | } |
| 3689 | |
| 3690 | /* static */ |
| 3691 | void wxDateTimeHolidayAuthority::AddAuthority(wxDateTimeHolidayAuthority *auth) |
| 3692 | { |
| 3693 | ms_authorities.Add(auth); |
| 3694 | } |
| 3695 | |
| 3696 | // ---------------------------------------------------------------------------- |
| 3697 | // wxDateTimeWorkDays |
| 3698 | // ---------------------------------------------------------------------------- |
| 3699 | |
| 3700 | bool wxDateTimeWorkDays::DoIsHoliday(const wxDateTime& dt) const |
| 3701 | { |
| 3702 | wxDateTime::WeekDay wd = dt.GetWeekDay(); |
| 3703 | |
| 3704 | return (wd == wxDateTime::Sun) || (wd == wxDateTime::Sat); |
| 3705 | } |
| 3706 | |
| 3707 | size_t wxDateTimeWorkDays::DoGetHolidaysInRange(const wxDateTime& dtStart, |
| 3708 | const wxDateTime& dtEnd, |
| 3709 | wxDateTimeArray& holidays) const |
| 3710 | { |
| 3711 | if ( dtStart > dtEnd ) |
| 3712 | { |
| 3713 | wxFAIL_MSG( _T("invalid date range in GetHolidaysInRange") ); |
| 3714 | |
| 3715 | return 0u; |
| 3716 | } |
| 3717 | |
| 3718 | holidays.Empty(); |
| 3719 | |
| 3720 | // instead of checking all days, start with the first Sat after dtStart and |
| 3721 | // end with the last Sun before dtEnd |
| 3722 | wxDateTime dtSatFirst = dtStart.GetNextWeekDay(wxDateTime::Sat), |
| 3723 | dtSatLast = dtEnd.GetPrevWeekDay(wxDateTime::Sat), |
| 3724 | dtSunFirst = dtStart.GetNextWeekDay(wxDateTime::Sun), |
| 3725 | dtSunLast = dtEnd.GetPrevWeekDay(wxDateTime::Sun), |
| 3726 | dt; |
| 3727 | |
| 3728 | for ( dt = dtSatFirst; dt <= dtSatLast; dt += wxDateSpan::Week() ) |
| 3729 | { |
| 3730 | holidays.Add(dt); |
| 3731 | } |
| 3732 | |
| 3733 | for ( dt = dtSunFirst; dt <= dtSunLast; dt += wxDateSpan::Week() ) |
| 3734 | { |
| 3735 | holidays.Add(dt); |
| 3736 | } |
| 3737 | |
| 3738 | return holidays.GetCount(); |
| 3739 | } |
| 3740 | |
| 3741 | #endif // wxUSE_DATETIME |