The Ecere SDK - sdk/blob - ecere/src/sys/Time.ec

   1 namespace sys;
   2
   3 #define set _set
   4 #define Date _Date
   5 #define uint _uint
   6 #define Method _Method
   7 #define FileName _FileName
   8 #define Instance _Instance
   9 #define Size _Size
  10 #define File _File
  11 #define byte _byte
  12 #define int64 _int64
  13 #define uint64 _uint64
  14 #define Alignment _Alignment
  15
  16 #undef __BLOCKS__
  17
  18 #if defined(__WIN32__)
  19 #define WIN32_LEAN_AND_MEAN
  20 #define String String_
  21 #include <windows.h>
  22 #undef String
  23 #include <mmsystem.h>
  24 #elif defined(__unix__) || defined(__APPLE__)
  25 #include <sys/time.h>
  26 #include <sched.h>
  27 #include <unistd.h>
  28 #endif
  29 #include <time.h>
  30 #include <stdlib.h>
  31
  32 #undef set
  33 #undef uint
  34 #undef int64
  35 #undef uint64
  36 #undef byte
  37 #undef Method
  38 #undef Alignment
  39 #undef FileName
  40 #undef Instance
  41 #undef File
  42 #undef Size
  43 #undef Date
  44
  45 import "instance"
  46
  47 define EPOCH_YEAR      = 1970;
  48 define EPOCH_WEEKDAY   = thursday;
  49 static define SECS_PER_HOUR   = 60 * 60;
  50 static define SECS_PER_DAY    = SECS_PER_HOUR * 24;
  51
  52 #define DIV(a, b) ((a) / (b) - ((a) % (b) < 0))
  53 #define LEAPS_THRU_END_OF(y) (DIV (y, 4) - DIV (y, 100) + DIV (y, 400))
  54 #define ISLEAP(y) (!((y)%4) && (((y) % 100) || (!((y)% 400))))
  55
  56 const int daysInAYearBeforeMonth[2][13] =
  57 {
  58    // Normal years.
  59    { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
  60    // Leap years.
  61    { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
  62 };
  63
  64 int monthLengths[2][12] =
  65 {
  66         { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
  67         { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
  68 };
  69
  70 #if defined(__WIN32__)
  71
  72 #define LL2FILETIME( ll, pft )   (pft)->dwLowDateTime = (UINT)(ll); (pft)->dwHighDateTime = (UINT)((ll) >> 32);
  73 #define FILETIME2LL( pft, ll)    ll = (((LONGLONG)((pft)->dwHighDateTime))<<32) + (pft)-> dwLowDateTime ;
  74
  75 static int TIME_DayLightCompareDate(const SYSTEMTIME *date, const SYSTEMTIME *compareDate)
  76 {
  77    int limit_day, dayinsecs;
  78
  79    if(date->wMonth < compareDate->wMonth) return -1;
  80    if(date->wMonth > compareDate->wMonth) return 1;
  81
  82    if(compareDate->wDayOfWeek <= 6)
  83    {
  84       WORD First;
  85       int weekofmonth = compareDate->wDay;
  86       First = ( 6 + compareDate->wDayOfWeek - date->wDayOfWeek + date->wDay ) % 7 + 1;
  87       limit_day = First + 7 * (weekofmonth - 1);
  88       if(limit_day > monthLengths[date->wMonth==2 && ISLEAP(date->wYear)][date->wMonth - 1])
  89          limit_day -= 7;
  90    }
  91    else
  92    {
  93       limit_day = compareDate->wDay;
  94    }
  95
  96    limit_day = ((limit_day * 24  + compareDate->wHour) * 60 + compareDate->wMinute ) * 60;
  97    dayinsecs = ((date->wDay * 24  + date->wHour) * 60 + date->wMinute ) * 60 + date->wSecond;
  98    return dayinsecs < limit_day ? -1 : dayinsecs > limit_day ? 1 : 0;
  99 }
 100
 101 static uint TIME_CompTimeZoneID(const TIME_ZONE_INFORMATION *pTZinfo, FILETIME *lpFileTime, bool islocal)
 102 {
 103    int ret;
 104    bool beforeStandardDate, afterDaylightDate;
 105    DWORD retval = TIME_ZONE_ID_INVALID;
 106    LONGLONG llTime = 0;
 107    SYSTEMTIME SysTime;
 108    FILETIME ftTemp;
 109
 110    if (pTZinfo->DaylightDate.wMonth != 0)
 111    {
 112       if (pTZinfo->StandardDate.wMonth == 0 ||
 113          pTZinfo->StandardDate.wDay<1 ||
 114          pTZinfo->StandardDate.wDay>5 ||
 115          pTZinfo->DaylightDate.wDay<1 ||
 116          pTZinfo->DaylightDate.wDay>5)
 117       {
 118          SetLastError(ERROR_INVALID_PARAMETER);
 119          return TIME_ZONE_ID_INVALID;
 120       }
 121
 122       if (!islocal)
 123       {
 124          FILETIME2LL( lpFileTime, llTime );
 125          llTime -= ( pTZinfo->Bias + pTZinfo->DaylightBias ) * (LONGLONG)600000000;
 126          LL2FILETIME( llTime, &ftTemp)
 127          lpFileTime = &ftTemp;
 128       }
 129
 130       FileTimeToSystemTime(lpFileTime, &SysTime);
 131
 132       ret = TIME_DayLightCompareDate( &SysTime, &pTZinfo->StandardDate);
 133       if (ret == -2)
 134          return TIME_ZONE_ID_INVALID;
 135
 136       beforeStandardDate = ret < 0;
 137
 138       if (!islocal)
 139       {
 140          llTime -= ( pTZinfo->StandardBias - pTZinfo->DaylightBias ) * (LONGLONG)600000000;
 141          LL2FILETIME( llTime, &ftTemp)
 142          FileTimeToSystemTime(lpFileTime, &SysTime);
 143       }
 144
 145       ret = TIME_DayLightCompareDate( &SysTime, &pTZinfo->DaylightDate);
 146       if (ret == -2)
 147        return TIME_ZONE_ID_INVALID;
 148
 149       afterDaylightDate = ret >= 0;
 150
 151       retval = TIME_ZONE_ID_STANDARD;
 152       if( pTZinfo->DaylightDate.wMonth <  pTZinfo->StandardDate.wMonth )
 153       {
 154          if( beforeStandardDate && afterDaylightDate )
 155              retval = TIME_ZONE_ID_DAYLIGHT;
 156       }
 157       else if( beforeStandardDate || afterDaylightDate )
 158          retval = TIME_ZONE_ID_DAYLIGHT;
 159    }
 160    else
 161       retval = TIME_ZONE_ID_UNKNOWN;
 162    return retval;
 163 }
 164
 165 static bool TIME_GetTimezoneBias(const TIME_ZONE_INFORMATION *pTZinfo, FILETIME *lpFileTime, bool islocal, LONG *pBias)
 166 {
 167    LONG bias = pTZinfo->Bias;
 168    DWORD tzid = TIME_CompTimeZoneID( pTZinfo, lpFileTime, islocal);
 169
 170    if( tzid == TIME_ZONE_ID_INVALID)
 171       return false;
 172    if (tzid == TIME_ZONE_ID_DAYLIGHT)
 173       bias += pTZinfo->DaylightBias;
 174    else if (tzid == TIME_ZONE_ID_STANDARD)
 175       bias += pTZinfo->StandardBias;
 176    *pBias = bias;
 177    return true;
 178 }
 179
 180 static bool _TzSpecificLocalTimeToSystemTime(LPTIME_ZONE_INFORMATION lpTimeZoneInformation, LPSYSTEMTIME lpLocalTime, LPSYSTEMTIME lpUniversalTime)
 181 {
 182    FILETIME ft;
 183    LONG lBias;
 184    LONGLONG t;
 185    TIME_ZONE_INFORMATION tzinfo;
 186
 187    if(lpTimeZoneInformation)
 188    {
 189       memcpy(&tzinfo, lpTimeZoneInformation, sizeof(TIME_ZONE_INFORMATION));
 190    }
 191    else
 192    {
 193       if (GetTimeZoneInformation(&tzinfo) == TIME_ZONE_ID_INVALID)
 194          return false;
 195    }
 196
 197    if (!SystemTimeToFileTime(lpLocalTime, &ft))
 198       return false;
 199    FILETIME2LL( &ft, t)
 200    if (!TIME_GetTimezoneBias(&tzinfo, &ft, true, &lBias))
 201       return false;
 202
 203    t += (LONGLONG)lBias * 600000000;
 204    LL2FILETIME( t, &ft)
 205    return (bool)FileTimeToSystemTime(&ft, lpUniversalTime);
 206 }
 207 #endif
 208
 209 import "System"
 210
 211 public class Time : double
 212 {
 213    char * OnGetString(char * tempString, void * fieldData, bool * needClass)
 214    {
 215       Time time = this;
 216       int value;
 217       char temp[256];
 218       tempString[0] = 0;
 219       value = (int)(time / (60 * 60 * 24));
 220       if(value)
 221       {
 222
 223          sprintf(temp, "%d:", value);
 224          strcat(tempString, temp);
 225          time -= value * 60 * 60 * 24;
 226       }
 227       value = (int)(time / (60 * 60));
 228       if(value)
 229       {
 230          sprintf(temp, "%d:", value);
 231          strcat(tempString, temp);
 232          time -= value * 60 * 60;
 233       }
 234
 235       value = (int)(time / 60);
 236       sprintf(temp, "%d:", value);
 237       strcat(tempString, temp);
 238       time -= value * 60;
 239
 240       value = (int)(time);
 241       sprintf(temp, "%02d", value);
 242       strcat(tempString, temp);
 243       time -= value;
 244
 245       /*if(time > 0.00001)
 246       {
 247          sprintf(temp, "%f" time);
 248          strcat(tempString, temp+1);
 249       }*/
 250       return tempString;
 251    }
 252 }
 253
 254 public class Seconds : Time { public property Time {} };
 255
 256 #if !defined(__WIN32__)
 257 static time_t MakeTimeT(SecSince1970 t)
 258 {
 259    struct tm tm;
 260    time_t result;
 261    DateTime dt = t;
 262    tm.tm_year = dt.year - 1900;
 263    tm.tm_mon = dt.month;
 264    tm.tm_mday = dt.day;
 265    tm.tm_hour = dt.hour;
 266    tm.tm_min = dt.minute;
 267    tm.tm_sec = dt.second;
 268    tm.tm_yday = dt.dayInTheYear;
 269    tm.tm_wday = dt.dayOfTheWeek;
 270    result = mktime(&tm);
 271    return result;
 272 }
 273
 274 static time_t MakeTimeTfromDT(DateTime dt)
 275 {
 276    struct tm tm;
 277    time_t result;
 278    tm.tm_year = dt.year - 1900;
 279    tm.tm_mon = dt.month;
 280    tm.tm_mday = dt.day;
 281    tm.tm_hour = dt.hour;
 282    tm.tm_min = dt.minute;
 283    tm.tm_sec = dt.second;
 284    tm.tm_yday = dt.dayInTheYear;
 285    tm.tm_wday = dt.dayOfTheWeek;
 286    result = mktime(&tm);
 287    return result;
 288 }
 289
 290 #endif
 291
 292 public class SecSince1970 : int64
 293 {
 294    char * OnGetString(char * tempString, void * fieldData, bool * needClass)
 295    {
 296       // TOFIX:  passing argument 2 of '__ecereProp___ecereNameSpace__ecere__sys__DateTime_Set___ecereNameSpace__ecere__sys__SecSince1970' makes integer from pointer without a cast
 297       DateTime t = this;
 298       return t.OnGetString(tempString, fieldData, needClass);
 299       // TOFIX:
 300       // return ((DateTime)this).OnGetString(tempString, fieldData, needClass);
 301    }
 302
 303    // Is this required?
 304    int OnCompare(SecSince1970 data2)
 305    {
 306       int result = 0;
 307       if(this && data2)
 308       {
 309          if(this > data2)
 310             result = 1;
 311          else if(this < data2)
 312             result = -1;
 313       }
 314       return result;
 315    }
 316 public:
 317    property SecSince1970 global
 318    {
 319       get
 320       {
 321       #if defined(__WIN32__)
 322          SYSTEMTIME localTime, systemTime;
 323          FILETIME fileTime, localFileTime;
 324          DateTime input, global;
 325
 326          input = this;
 327
 328          localTime.wYear = (short)input.year;
 329          localTime.wMonth = (short)input.month + 1;
 330          localTime.wDay = (short)input.day;
 331          localTime.wHour = (short)input.hour;
 332          localTime.wMinute = (short)input.minute;
 333          localTime.wSecond = (short)input.second;
 334          localTime.wMilliseconds = 0;
 335
 336          /*
 337          SystemTimeToFileTime(&localTime, &fileTime);
 338          LocalFileTimeToFileTime(&fileTime, &localFileTime);
 339          FileTimeToSystemTime(&localFileTime, &systemTime);
 340          */
 341
 342          _TzSpecificLocalTimeToSystemTime(null, &localTime, &systemTime);
 343
 344          global.year = systemTime.wYear;
 345          global.month = (Month)(systemTime.wMonth - 1);
 346          global.day = systemTime.wDay;
 347          global.hour = systemTime.wHour;
 348          global.minute = systemTime.wMinute;
 349          global.second = systemTime.wSecond;
 350
 351          return global;
 352       #else
 353          struct tm tm;
 354          DateTime global;
 355          time_t t = MakeTimeT(this);
 356          // gmtime_r((time_t *)&this, &tm);
 357          gmtime_r(&t, &tm);
 358          global.year = tm.tm_year + 1900;
 359          global.month = (Month)tm.tm_mon;
 360          global.day = tm.tm_mday;
 361          global.hour = tm.tm_hour;
 362          global.minute = tm.tm_min;
 363          global.second = tm.tm_sec;
 364          global.dayInTheYear = tm.tm_yday;
 365          global.dayOfTheWeek = (DayOfTheWeek)tm.tm_wday;
 366          return global;
 367       #endif
 368       }
 369    };
 370    property SecSince1970 local
 371    {
 372       get
 373       {
 374 #if defined(__WIN32__)
 375          SYSTEMTIME systemTime, localTime;
 376          DateTime utc, local;
 377
 378          utc = this;
 379
 380          systemTime.wYear = (short)utc.year;
 381          systemTime.wMonth = (short)utc.month + 1;
 382          systemTime.wDay = (short)utc.day;
 383          systemTime.wHour = (short)utc.hour;
 384          systemTime.wMinute = (short)utc.minute;
 385          systemTime.wSecond = (short)utc.second;
 386          systemTime.wMilliseconds = 0;
 387
 388          SystemTimeToTzSpecificLocalTime(null, &systemTime, &localTime);
 389
 390          local.year = localTime.wYear;
 391          local.month = (Month)(localTime.wMonth - 1);
 392          local.day = localTime.wDay;
 393          local.hour = localTime.wHour;
 394          local.minute = localTime.wMinute;
 395          local.second = localTime.wSecond;
 396          local.dayOfTheWeek = (DayOfTheWeek)localTime.wDayOfWeek;
 397
 398          local.FixDayOfYear();
 399          return local;
 400 #else
 401          DateTime local;
 402          struct tm tm;
 403          time_t t = MakeTimeT(this);
 404          //localtime_r((time_t *)&this, &tm);
 405          localtime_r(&t, &tm);
 406          local.year = tm.tm_year + 1900;
 407          local.month = (Month)tm.tm_mon;
 408          local.day = tm.tm_mday;
 409          local.hour = tm.tm_hour;
 410          local.minute = tm.tm_min;
 411          local.second = tm.tm_sec;
 412          local.dayInTheYear = tm.tm_yday;
 413          local.dayOfTheWeek = (DayOfTheWeek)tm.tm_wday;
 414          return local;
 415 #endif
 416       }
 417    };
 418 };
 419
 420 public class TimeStamp32 : uint32
 421 {
 422 public:
 423    char * OnGetString(char * tempString, void * fieldData, bool * needClass)
 424    {
 425       DateTime t = (SecSince1970)(int)this;
 426       return t.OnGetString(tempString, fieldData, needClass);
 427       // TOFIX:
 428       // return ((DateTime)this).OnGetString(tempString, fieldData, needClass);
 429    }
 430
 431    // Is this required?
 432    int OnCompare(TimeStamp32 data2)
 433    {
 434       int result = 0;
 435       if(this && data2)
 436       {
 437          if(this > data2)
 438             result = 1;
 439          else if(this < data2)
 440             result = -1;
 441       }
 442       return result;
 443    }
 444 };
 445
 446 public class TimeStamp : SecSince1970
 447 {
 448    public property SecSince1970 {};
 449 };
 450 public enum DayOfTheWeek { sunday, monday, tuesday, wednesday, thursday, friday, saturday };
 451 public struct DateTime
 452 {
 453    int year;
 454    Month month;
 455    int day, hour, minute, second;
 456    DayOfTheWeek dayOfTheWeek;
 457    int dayInTheYear;
 458
 459    bool GetLocalTime()
 460    {
 461    #if defined(__WIN32__)
 462       SYSTEMTIME systemTime;
 463       ::GetLocalTime(&systemTime);
 464
 465       year = systemTime.wYear;
 466       month = (Month)(systemTime.wMonth - 1);
 467       day = systemTime.wDay;
 468       hour = systemTime.wHour;
 469       minute = systemTime.wMinute;
 470       second = systemTime.wSecond;
 471
 472       FixDayOfYear();
 473       {
 474          Date date { year, month, day };
 475          dayOfTheWeek = date.dayOfTheWeek;
 476       }
 477    #else
 478       struct tm tm;
 479       time_t currentTime = time(null);
 480       localtime_r(&currentTime, &tm);
 481
 482       year = tm.tm_year + 1900;
 483       month = (Month)tm.tm_mon;
 484       day = tm.tm_mday;
 485       hour = tm.tm_hour;
 486       minute = tm.tm_min;
 487       second = tm.tm_sec;
 488       dayInTheYear = tm.tm_yday;
 489       dayOfTheWeek = (DayOfTheWeek)tm.tm_wday;
 490    #endif
 491
 492       return true;
 493    }
 494
 495    bool FixDayOfYear()
 496    {
 497       dayInTheYear = daysInAYearBeforeMonth[ISLEAP(year)][month] + day - 1;
 498       return true;
 499    }
 500
 501    property DateTime global
 502    {
 503       set { this = value.local; }
 504       get
 505       {
 506       #if defined(__WIN32__)
 507          SYSTEMTIME localTime, systemTime;
 508          FILETIME fileTime, localFileTime;
 509
 510          localTime.wYear = (short)year;
 511          localTime.wMonth = (short)month + 1;
 512          localTime.wDay = (short)day;
 513          localTime.wHour = (short)hour;
 514          localTime.wMinute = (short)minute;
 515          localTime.wSecond = (short)second;
 516          localTime.wMilliseconds = 0;
 517
 518          SystemTimeToFileTime(&localTime, &fileTime);
 519          LocalFileTimeToFileTime(&fileTime, &localFileTime);
 520          FileTimeToSystemTime(&localFileTime, &systemTime);
 521
 522          value.year = systemTime.wYear;
 523          value.month = (Month)(systemTime.wMonth - 1);
 524          value.day = systemTime.wDay;
 525          value.hour = systemTime.wHour;
 526          value.minute = systemTime.wMinute;
 527          value.second = systemTime.wSecond;
 528       #else
 529          struct tm tm;
 530          //time_t t = (time_t)(SecSince1970)this;
 531          time_t t = MakeTimeTfromDT(this);
 532          gmtime_r(&t, &tm);
 533          value.year = tm.tm_year + 1900;
 534          value.month = (Month)tm.tm_mon;
 535          value.day = tm.tm_mday;
 536          value.hour = tm.tm_hour;
 537          value.minute = tm.tm_min;
 538          value.second = tm.tm_sec;
 539          value.dayInTheYear = tm.tm_yday;
 540          value.dayOfTheWeek = (DayOfTheWeek)tm.tm_wday;
 541       #endif
 542       }
 543    };
 544    property DateTime local
 545    {
 546       set { this = value.global; }
 547       get
 548       {
 549       #if defined(__WIN32__)
 550          SYSTEMTIME systemTime, localTime;
 551
 552          systemTime.wYear = (short)year;
 553          systemTime.wMonth = (short)month + 1;
 554          systemTime.wDay = (short)day;
 555          systemTime.wHour = (short)hour;
 556          systemTime.wMinute = (short)minute;
 557          systemTime.wSecond = (short)second;
 558          systemTime.wMilliseconds = 0;
 559
 560          SystemTimeToTzSpecificLocalTime(null, &systemTime, &localTime);
 561
 562          value.year = localTime.wYear;
 563          value.month = (Month)(localTime.wMonth - 1);
 564          value.day = localTime.wDay;
 565          value.hour = localTime.wHour;
 566          value.minute = localTime.wMinute;
 567          value.second = localTime.wSecond;
 568          value.dayOfTheWeek = (DayOfTheWeek)localTime.wDayOfWeek;
 569
 570          value.FixDayOfYear();
 571       #else
 572          struct tm tm;
 573          // time_t t = (time_t)(SecSince1970)this;
 574          time_t t = MakeTimeTfromDT(this);
 575          localtime_r(&t, &tm);
 576          value.year = tm.tm_year + 1900;
 577          value.month = (Month)tm.tm_mon;
 578          value.day = tm.tm_mday;
 579          value.hour = tm.tm_hour;
 580          value.minute = tm.tm_min;
 581          value.second = tm.tm_sec;
 582          value.dayInTheYear = tm.tm_yday;
 583          value.dayOfTheWeek = (DayOfTheWeek)tm.tm_wday;
 584       #endif
 585       }
 586    };
 587    property SecSince1970
 588    {
 589       set
 590       {
 591          int64 days, y;
 592          int rem;
 593
 594          days = value / SECS_PER_DAY;
 595          rem = (int)(value % SECS_PER_DAY);
 596
 597          while(rem < 0)             { rem += SECS_PER_DAY; days--; }
 598          while(rem >= SECS_PER_DAY) { rem -= SECS_PER_DAY; days++; }
 599
 600          hour = rem / SECS_PER_HOUR;
 601
 602          rem %= SECS_PER_HOUR;
 603          minute = rem / 60;
 604          second = rem % 60;
 605
 606          dayOfTheWeek = (EPOCH_WEEKDAY + days) % 7;
 607          if(dayOfTheWeek < 0)
 608             dayOfTheWeek += 7;
 609
 610          y = EPOCH_YEAR;
 611          while(days < 0 || days >= daysInAYearBeforeMonth[ISLEAP(y)][12])
 612          {
 613             int64 yg = y + days / 365 - (days % 365 < 0);
 614             days -= ((yg - y) * 365 + LEAPS_THRU_END_OF(yg - 1) - LEAPS_THRU_END_OF(y - 1));
 615             y = yg;
 616          }
 617          year = (int)y;
 618          {
 619             const int * daysBeforeMonth = daysInAYearBeforeMonth[ISLEAP(y)];
 620             dayInTheYear = (int)days;
 621             for(y = 11; days < daysBeforeMonth[y]; y--);
 622             days -= daysBeforeMonth[y];
 623             month = (Month)y;
 624             day = (int)(days + 1);
 625          }
 626       }
 627
 628       get
 629       {
 630          int month = this.month;
 631          int monthRemainder = month % 12;
 632          bool negativeMonthRemainder = monthRemainder < 0;
 633          int monthYears = month / 12 - negativeMonthRemainder;
 634          int year = this.year + monthYears;
 635          // if(year >= 1970)
 636          {
 637             int a4 = (year       / 4) - !(year       & 3);
 638             int b4 = (EPOCH_YEAR / 4) - !(EPOCH_YEAR & 3);
 639             int a100 = a4 / 25 - (a4 % 25 < 0);
 640             int b100 = b4 / 25 - (b4 % 25 < 0);
 641             int a400 = a100 / 4;
 642             int b400 = b100 / 4;
 643             int leapDays = (a4 - b4) - (a100 - b100) + (a400 - b400);
 644             int64 days = 365 * (year - EPOCH_YEAR) + leapDays;
 645             month = monthRemainder + 12 * negativeMonthRemainder;
 646             days += daysInAYearBeforeMonth[ISLEAP(year)][month] + day - 1;
 647             return 60 * (60 * (24 * days + hour) + minute) + second;
 648          }
 649          return 0;
 650       }
 651    };
 652    property Date
 653    {
 654       set
 655       {
 656          year = value.year;
 657          month = value.month;
 658          day = value.day;
 659          hour = 0;
 660          minute = 0;
 661          second = 0;
 662       }
 663       get { return Date { year, month, day }; }
 664    }
 665
 666    char * OnGetString(char * stringOutput, void * fieldData, bool * needClass)
 667    {
 668       static const char ampm[2][3] = { "AM", "PM" };
 669       int hour = this.hour;
 670       bool pm = false;
 671       if(hour > 12) { hour -= 12; pm = true; }
 672       else if(hour == 12) pm = true;
 673       if(!hour) hour = 12;
 674
 675       if(!year && !day && !month && !this.hour && !minute && !second)
 676          stringOutput[0] = 0;
 677       else
 678          sprintf(stringOutput, "%s %s %2d %2d:%02d:%02d %s %04d",
 679             shortDaysNames[dayOfTheWeek], shortMonthsNames[month], day, hour, minute, second, ampm[pm], year);
 680
 681       return stringOutput;
 682    }
 683
 684    bool OnGetDataFromString(char * string)
 685    {
 686       char * s = CopyString(string);
 687       char * tokens[20];
 688       int count = TokenizeWith(s, 20, tokens, " ", false);
 689       int c;
 690       bool foundDayOfTheWeek = false;
 691       bool foundDate = false;
 692       DayOfTheWeek dayOfTheWeek;
 693       int day = 0;
 694       int minute = 0;
 695       int second = 0;
 696       int hour = 0;
 697       int year = 0;
 698
 699       for(c = 0; c < count; c++)
 700       {
 701          int i;
 702          for(i = 0; i<7; i++)
 703             if(!strcmpi(tokens[c], shortDaysNames[i]) || !strcmpi(tokens[c], longDaysNames[i]) ||
 704                !strcmpi(tokens[c], enShortDaysNames[i]) || !strcmpi(tokens[c], enLongDaysNames[i]))
 705                break;
 706          if(i < 7) { dayOfTheWeek = (DayOfTheWeek)i; foundDayOfTheWeek = true; continue; }
 707
 708          for(i = 0; i<12; i++)
 709             if(!strcmpi(tokens[c], shortMonthsNames[i]) || !strcmpi(tokens[c], longMonthsNames[i]) ||
 710                !strcmpi(tokens[c], enShortMonthsNames[i]) || !strcmpi(tokens[c], enLongMonthsNames[i]))
 711                break;
 712          if(i < 12) { month = (Month)i; continue; }
 713
 714          if(strchr(tokens[c], ':'))
 715          {
 716             char * subTokens[20];
 717             int sCount = TokenizeWith(tokens[c], 20, subTokens, " :", false);
 718             int t;
 719             bool pm = false, am = false;
 720             for(t = 0; t<sCount; t++)
 721             {
 722                if(!strcmpi(subTokens[t], "am")) am = true;
 723                else if(!strcmpi(subTokens[t], "pm")) pm = true;
 724                else if(t-am-pm == 0) hour = atoi(subTokens[t]);
 725                else if(t-am-pm == 1) minute = atoi(subTokens[t]);
 726                else if(t-am-pm == 2) second = atoi(subTokens[t]);
 727             }
 728
 729             if(c < count - 1)
 730             {
 731                if(!strcmpi(tokens[c+1], "am")) am = true;
 732                else if(!strcmpi(tokens[c+1], "pm")) pm = true;
 733             }
 734
 735             if(am && hour == 12) hour = 0;
 736             else if(pm && hour < 12) hour += 12;
 737
 738             continue;
 739          }
 740
 741          if(!foundDate)
 742          {
 743             if(strchr(tokens[c], '/') || strchr(tokens[c], '-'))
 744             {
 745                Date date;
 746                if(date.OnGetDataFromString(tokens[c]))
 747                {
 748                   day = date.day;
 749                   year = date.year;
 750                   month = date.month;
 751                }
 752                foundDate = true;
 753             }
 754             else
 755             {
 756                i = atoi(tokens[c]);
 757                if(i > 31)
 758                {
 759                   year = i;
 760                   continue;
 761                }
 762                else if(i)
 763                   day = i;
 764             }
 765          }
 766       }
 767       if(day)
 768       {
 769          Date date { year, month, day };
 770          this.dayOfTheWeek = date.dayOfTheWeek;
 771          this.day = day;
 772          this.minute = minute;
 773          this.second = second;
 774          this.hour = hour;
 775          this.year = year;
 776       }
 777       else if(foundDayOfTheWeek)
 778       {
 779          SecSince1970 weWant;
 780          GetLocalTime();
 781          if(dayOfTheWeek <= this.dayOfTheWeek) dayOfTheWeek += 7;
 782          weWant = (SecSince1970)this + (int)(dayOfTheWeek - this.dayOfTheWeek) * 24 * 60 * 60;
 783          this = (DateTime)weWant;
 784       }
 785       else if(!strcmpi(s, "today") || !strcmpi(s, $"today") ||
 786               !strcmpi(s, "now") || !strcmpi(s, $"now"))
 787          GetLocalTime();
 788       else if(!strcmpi(s, "tomorrow") || !strcmpi(s, $"tomorrow"))
 789       {
 790          SecSince1970 weWant;
 791          GetLocalTime();
 792          weWant = (SecSince1970)this + 24 * 60 * 60;
 793          this = (DateTime)weWant;
 794       }
 795       else if(!strcmpi(s, "yesterday") || !strcmpi(s, $"yesterday"))
 796       {
 797          SecSince1970 weWant;
 798          GetLocalTime();
 799          weWant = (SecSince1970)this - 24 * 60 * 60;
 800          this = (DateTime)weWant;
 801       }
 802       else if(!s[0])
 803       {
 804          this = { };
 805          delete s;
 806          return true;
 807       }
 808       delete s;
 809       return this.day != 0;
 810    }
 811 };
 812
 813 public Time GetTime(void)
 814 {
 815 #if defined(__WIN32__)
 816    return timeGetTime() / 1000.0;
 817 #elif defined(__unix__) || defined(__APPLE__)
 818    struct timeval tp;
 819    struct timezone tzp;
 820    static int secbase = 0;
 821
 822    gettimeofday(&tp, &tzp);
 823
 824    if(!secbase)
 825    {
 826       secbase = (int)tp.tv_sec;
 827       return tp.tv_usec / 1000000.0;
 828    }
 829    return (tp.tv_sec - secbase) + tp.tv_usec / 1000000.0;
 830 #endif
 831 }
 832
 833 public void Sleep(Seconds seconds)
 834 {
 835 #if defined(__WIN32__)
 836    ::Sleep((uint)(seconds * 1000));
 837 #else
 838    if(!seconds)
 839       sched_yield();
 840    else
 841    {
 842       // usleep((uint)(seconds * 1000000));
 843       struct timeval tv = { (int)seconds, (int)((seconds - (int)seconds) * 1000000) };
 844       select(0,null,null,null, &tv);
 845    }
 846 #endif
 847 }
 848
 849 public void RandomSeed(uint seed)
 850 {
 851 #if defined(__linux__) || defined(__DJGPP__)
 852    srandom(seed);
 853 #else
 854    srand(seed);
 855 #endif
 856 }
 857
 858 public int GetRandom(int lo, int hi)
 859 {
 860    if(hi >= lo)
 861    {
 862 #if defined(__linux__) || defined(__DJGPP__)
 863       // return lo+(int)(((uint)(hi - lo) + 1.0)*random()/(RAND_MAX+1.0));
 864       return (int)(lo + ((uint)(hi - lo) + 1.0) * random() / (RAND_MAX + 1.0));
 865 #else
 866       // return lo+(int)(((uint)(hi - lo) + 1.0)*rand()/(RAND_MAX+1.0));
 867       return (int)(lo + ((uint)(hi - lo) + 1.0) * rand() / (RAND_MAX + 1.0));
 868 #endif
 869    }
 870    else
 871       return lo;
 872 }