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 = (WORD)(( 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    const 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    const char * OnGetString(char * tempString, void * fieldData, bool * needClass)
 295    {
 296       return ((DateTime)this).OnGetString(tempString, fieldData, needClass);
 297    }
 298
 299    bool OnGetDataFromString(const char * string)
 300    {
 301       DateTime dt { };
 302       if(dt.OnGetDataFromString(string))
 303       {
 304          this = dt;
 305          return true;
 306       }
 307       return false;
 308    }
 309
 310    // Is this required?
 311    int OnCompare(SecSince1970 data2)
 312    {
 313       int result = 0;
 314       if(this && data2)
 315       {
 316          if(this > data2)
 317             result = 1;
 318          else if(this < data2)
 319             result = -1;
 320       }
 321       return result;
 322    }
 323 public:
 324    property SecSince1970 global
 325    {
 326       get
 327       {
 328       #if defined(__WIN32__)
 329          SYSTEMTIME localTime, systemTime;
 330          //FILETIME fileTime, localFileTime;
 331          DateTime input, global;
 332
 333          input = this;
 334
 335          localTime.wYear = (short)input.year;
 336          localTime.wMonth = (short)(input.month + 1);
 337          localTime.wDay = (short)input.day;
 338          localTime.wHour = (short)input.hour;
 339          localTime.wMinute = (short)input.minute;
 340          localTime.wSecond = (short)input.second;
 341          localTime.wMilliseconds = 0;
 342
 343          /*
 344          SystemTimeToFileTime(&localTime, &fileTime);
 345          LocalFileTimeToFileTime(&fileTime, &localFileTime);
 346          FileTimeToSystemTime(&localFileTime, &systemTime);
 347          */
 348
 349          _TzSpecificLocalTimeToSystemTime(null, &localTime, &systemTime);
 350
 351          global.year = systemTime.wYear;
 352          global.month = (Month)(systemTime.wMonth - 1);
 353          global.day = systemTime.wDay;
 354          global.hour = systemTime.wHour;
 355          global.minute = systemTime.wMinute;
 356          global.second = systemTime.wSecond;
 357
 358          return global;
 359       #else
 360          struct tm tm;
 361          DateTime global;
 362          time_t t = MakeTimeT(this);
 363          // gmtime_r((time_t *)&this, &tm);
 364          gmtime_r(&t, &tm);
 365          global.year = tm.tm_year + 1900;
 366          global.month = (Month)tm.tm_mon;
 367          global.day = tm.tm_mday;
 368          global.hour = tm.tm_hour;
 369          global.minute = tm.tm_min;
 370          global.second = tm.tm_sec;
 371          global.dayInTheYear = tm.tm_yday;
 372          global.dayOfTheWeek = (DayOfTheWeek)tm.tm_wday;
 373          return global;
 374       #endif
 375       }
 376    };
 377    property SecSince1970 local
 378    {
 379       get
 380       {
 381 #if defined(__WIN32__)
 382          SYSTEMTIME systemTime, localTime;
 383          DateTime utc, local;
 384
 385          utc = this;
 386
 387          systemTime.wYear = (short)utc.year;
 388          systemTime.wMonth = (short)(utc.month + 1);
 389          systemTime.wDay = (short)utc.day;
 390          systemTime.wHour = (short)utc.hour;
 391          systemTime.wMinute = (short)utc.minute;
 392          systemTime.wSecond = (short)utc.second;
 393          systemTime.wMilliseconds = 0;
 394
 395          SystemTimeToTzSpecificLocalTime(null, &systemTime, &localTime);
 396
 397          local.year = localTime.wYear;
 398          local.month = (Month)(localTime.wMonth - 1);
 399          local.day = localTime.wDay;
 400          local.hour = localTime.wHour;
 401          local.minute = localTime.wMinute;
 402          local.second = localTime.wSecond;
 403          local.dayOfTheWeek = (DayOfTheWeek)localTime.wDayOfWeek;
 404
 405          local.FixDayOfYear();
 406          return local;
 407 #else
 408          DateTime local;
 409          struct tm tm;
 410          time_t t = MakeTimeT(this);
 411          //localtime_r((time_t *)&this, &tm);
 412          localtime_r(&t, &tm);
 413          local.year = tm.tm_year + 1900;
 414          local.month = (Month)tm.tm_mon;
 415          local.day = tm.tm_mday;
 416          local.hour = tm.tm_hour;
 417          local.minute = tm.tm_min;
 418          local.second = tm.tm_sec;
 419          local.dayInTheYear = tm.tm_yday;
 420          local.dayOfTheWeek = (DayOfTheWeek)tm.tm_wday;
 421          return local;
 422 #endif
 423       }
 424    };
 425 };
 426
 427 public class TimeStamp32 : uint32
 428 {
 429 public:
 430    const char * OnGetString(char * tempString, void * fieldData, bool * needClass)
 431    {
 432       return ((DateTime)(TimeStamp)this).OnGetString(tempString, fieldData, needClass);
 433    }
 434
 435    // Is this required?
 436    int OnCompare(TimeStamp32 data2)
 437    {
 438       int result = 0;
 439       if(this && data2)
 440       {
 441          if(this > data2)
 442             result = 1;
 443          else if(this < data2)
 444             result = -1;
 445       }
 446       return result;
 447    }
 448 };
 449
 450 public class TimeStamp : SecSince1970
 451 {
 452    public property SecSince1970 {};
 453 };
 454 public enum DayOfTheWeek { sunday, monday, tuesday, wednesday, thursday, friday, saturday };
 455 public struct DateTime
 456 {
 457    int year;
 458    Month month;
 459    int day, hour, minute, second;
 460    DayOfTheWeek dayOfTheWeek;
 461    int dayInTheYear;
 462
 463    bool GetLocalTime()
 464    {
 465    #if defined(__WIN32__)
 466       SYSTEMTIME systemTime;
 467       ::GetLocalTime(&systemTime);
 468
 469       year = systemTime.wYear;
 470       month = (Month)(systemTime.wMonth - 1);
 471       day = systemTime.wDay;
 472       hour = systemTime.wHour;
 473       minute = systemTime.wMinute;
 474       second = systemTime.wSecond;
 475
 476       FixDayOfYear();
 477       {
 478          Date date { year, month, day };
 479          dayOfTheWeek = date.dayOfTheWeek;
 480       }
 481    #else
 482       struct tm tm;
 483       time_t currentTime = time(null);
 484       localtime_r(&currentTime, &tm);
 485
 486       year = tm.tm_year + 1900;
 487       month = (Month)tm.tm_mon;
 488       day = tm.tm_mday;
 489       hour = tm.tm_hour;
 490       minute = tm.tm_min;
 491       second = tm.tm_sec;
 492       dayInTheYear = tm.tm_yday;
 493       dayOfTheWeek = (DayOfTheWeek)tm.tm_wday;
 494    #endif
 495
 496       return true;
 497    }
 498
 499    bool FixDayOfYear()
 500    {
 501       dayInTheYear = daysInAYearBeforeMonth[ISLEAP(year)][month] + day - 1;
 502       return true;
 503    }
 504
 505    property DateTime global
 506    {
 507       set { this = value.local; }
 508       get
 509       {
 510       #if defined(__WIN32__)
 511          SYSTEMTIME localTime, systemTime;
 512          FILETIME fileTime, localFileTime;
 513
 514          localTime.wYear = (short)year;
 515          localTime.wMonth = (short)(month + 1);
 516          localTime.wDay = (short)day;
 517          localTime.wHour = (short)hour;
 518          localTime.wMinute = (short)minute;
 519          localTime.wSecond = (short)second;
 520          localTime.wMilliseconds = 0;
 521
 522          SystemTimeToFileTime(&localTime, &fileTime);
 523          LocalFileTimeToFileTime(&fileTime, &localFileTime);
 524          FileTimeToSystemTime(&localFileTime, &systemTime);
 525
 526          value.year = systemTime.wYear;
 527          value.month = (Month)(systemTime.wMonth - 1);
 528          value.day = systemTime.wDay;
 529          value.hour = systemTime.wHour;
 530          value.minute = systemTime.wMinute;
 531          value.second = systemTime.wSecond;
 532       #else
 533          struct tm tm;
 534          //time_t t = (time_t)(SecSince1970)this;
 535          time_t t = MakeTimeTfromDT(this);
 536          gmtime_r(&t, &tm);
 537          value.year = tm.tm_year + 1900;
 538          value.month = (Month)tm.tm_mon;
 539          value.day = tm.tm_mday;
 540          value.hour = tm.tm_hour;
 541          value.minute = tm.tm_min;
 542          value.second = tm.tm_sec;
 543          value.dayInTheYear = tm.tm_yday;
 544          value.dayOfTheWeek = (DayOfTheWeek)tm.tm_wday;
 545       #endif
 546       }
 547    };
 548    property DateTime local
 549    {
 550       set { this = value.global; }
 551       get
 552       {
 553       #if defined(__WIN32__)
 554          SYSTEMTIME systemTime, localTime;
 555
 556          systemTime.wYear = (short)year;
 557          systemTime.wMonth = (short)(month + 1);
 558          systemTime.wDay = (short)day;
 559          systemTime.wHour = (short)hour;
 560          systemTime.wMinute = (short)minute;
 561          systemTime.wSecond = (short)second;
 562          systemTime.wMilliseconds = 0;
 563
 564          SystemTimeToTzSpecificLocalTime(null, &systemTime, &localTime);
 565
 566          value.year = localTime.wYear;
 567          value.month = (Month)(localTime.wMonth - 1);
 568          value.day = localTime.wDay;
 569          value.hour = localTime.wHour;
 570          value.minute = localTime.wMinute;
 571          value.second = localTime.wSecond;
 572          value.dayOfTheWeek = (DayOfTheWeek)localTime.wDayOfWeek;
 573
 574          value.FixDayOfYear();
 575       #else
 576          struct tm tm;
 577          // time_t t = (time_t)(SecSince1970)this;
 578          time_t t = MakeTimeTfromDT(this);
 579          localtime_r(&t, &tm);
 580          value.year = tm.tm_year + 1900;
 581          value.month = (Month)tm.tm_mon;
 582          value.day = tm.tm_mday;
 583          value.hour = tm.tm_hour;
 584          value.minute = tm.tm_min;
 585          value.second = tm.tm_sec;
 586          value.dayInTheYear = tm.tm_yday;
 587          value.dayOfTheWeek = (DayOfTheWeek)tm.tm_wday;
 588       #endif
 589       }
 590    };
 591    property SecSince1970
 592    {
 593       set
 594       {
 595          int64 days, y;
 596          int rem;
 597
 598          days = value / SECS_PER_DAY;
 599          rem = (int)(value % SECS_PER_DAY);
 600
 601          while(rem < 0)             { rem += SECS_PER_DAY; days--; }
 602          while(rem >= SECS_PER_DAY) { rem -= SECS_PER_DAY; days++; }
 603
 604          hour = rem / SECS_PER_HOUR;
 605
 606          rem %= SECS_PER_HOUR;
 607          minute = rem / 60;
 608          second = rem % 60;
 609
 610          dayOfTheWeek = (EPOCH_WEEKDAY + days) % 7;
 611          if(dayOfTheWeek < 0)
 612             dayOfTheWeek += 7;
 613
 614          y = EPOCH_YEAR;
 615          while(days < 0 || days >= daysInAYearBeforeMonth[ISLEAP(y)][12])
 616          {
 617             int64 yg = y + days / 365 - (days % 365 < 0);
 618             days -= ((yg - y) * 365 + LEAPS_THRU_END_OF(yg - 1) - LEAPS_THRU_END_OF(y - 1));
 619             y = yg;
 620          }
 621          year = (int)y;
 622          {
 623             const int * daysBeforeMonth = daysInAYearBeforeMonth[ISLEAP(y)];
 624             dayInTheYear = (int)days;
 625             for(y = 11; days < daysBeforeMonth[y]; y--);
 626             days -= daysBeforeMonth[y];
 627             month = (Month)y;
 628             day = (int)(days + 1);
 629          }
 630       }
 631
 632       get
 633       {
 634          int month = this.month;
 635          int monthRemainder = month % 12;
 636          bool negativeMonthRemainder = monthRemainder < 0;
 637          int monthYears = month / 12 - negativeMonthRemainder;
 638          int year = this.year + monthYears;
 639          // if(year >= 1970)
 640          {
 641             int a4 = (year       / 4) - !(year       & 3);
 642             int b4 = (EPOCH_YEAR / 4) - !(EPOCH_YEAR & 3);
 643             int a100 = a4 / 25 - (a4 % 25 < 0);
 644             int b100 = b4 / 25 - (b4 % 25 < 0);
 645             int a400 = a100 / 4;
 646             int b400 = b100 / 4;
 647             int leapDays = (a4 - b4) - (a100 - b100) + (a400 - b400);
 648             int64 days = 365 * (year - EPOCH_YEAR) + leapDays;
 649             month = monthRemainder + 12 * negativeMonthRemainder;
 650             days += daysInAYearBeforeMonth[ISLEAP(year)][month] + day - 1;
 651             return 60 * (60 * (24 * days + hour) + minute) + second;
 652          }
 653          return 0;
 654       }
 655    };
 656    property Date
 657    {
 658       set
 659       {
 660          year = value.year;
 661          month = value.month;
 662          day = value.day;
 663          hour = 0;
 664          minute = 0;
 665          second = 0;
 666       }
 667       get { value = Date { year, month, day }; }
 668    }
 669
 670    const char * OnGetString(char * stringOutput, void * fieldData, bool * needClass)
 671    {
 672       static const char ampm[2][3] = { "AM", "PM" };
 673       int hour = this.hour;
 674       bool pm = false;
 675       if(hour > 12) { hour -= 12; pm = true; }
 676       else if(hour == 12) pm = true;
 677       if(!hour) hour = 12;
 678
 679       if(!year && !day && !month && !this.hour && !minute && !second)
 680          stringOutput[0] = 0;
 681       else
 682          sprintf(stringOutput, "%s %s %2d %2d:%02d:%02d %s %04d",
 683             shortDaysNames[dayOfTheWeek], shortMonthsNames[month], day, hour, minute, second, ampm[pm], year);
 684
 685       return stringOutput;
 686    }
 687
 688    bool OnGetDataFromString(const char * string)
 689    {
 690       char * s = CopyString(string);
 691       char * tokens[20];
 692       int count = TokenizeWith(s, 20, tokens, " ", false);
 693       int c;
 694       bool foundDayOfTheWeek = false;
 695       bool foundDate = false;
 696       DayOfTheWeek dayOfTheWeek = 0;
 697       int day = 0;
 698       int minute = 0;
 699       int second = 0;
 700       int hour = 0;
 701       int year = 0;
 702
 703       for(c = 0; c < count; c++)
 704       {
 705          int i;
 706          for(i = 0; i<7; i++)
 707             if(!strcmpi(tokens[c], shortDaysNames[i]) || !strcmpi(tokens[c], longDaysNames[i]) ||
 708                !strcmpi(tokens[c], enShortDaysNames[i]) || !strcmpi(tokens[c], enLongDaysNames[i]))
 709                break;
 710          if(i < 7) { dayOfTheWeek = (DayOfTheWeek)i; foundDayOfTheWeek = true; continue; }
 711
 712          for(i = 0; i<12; i++)
 713             if(!strcmpi(tokens[c], shortMonthsNames[i]) || !strcmpi(tokens[c], longMonthsNames[i]) ||
 714                !strcmpi(tokens[c], enShortMonthsNames[i]) || !strcmpi(tokens[c], enLongMonthsNames[i]))
 715                break;
 716          if(i < 12) { month = (Month)i; continue; }
 717
 718          if(strchr(tokens[c], ':'))
 719          {
 720             char * subTokens[20];
 721             int sCount = TokenizeWith(tokens[c], 20, subTokens, " :", false);
 722             int t;
 723             bool pm = false, am = false;
 724             for(t = 0; t<sCount; t++)
 725             {
 726                if(!strcmpi(subTokens[t], "am")) am = true;
 727                else if(!strcmpi(subTokens[t], "pm")) pm = true;
 728                else if(t-am-pm == 0) hour = atoi(subTokens[t]);
 729                else if(t-am-pm == 1) minute = atoi(subTokens[t]);
 730                else if(t-am-pm == 2) second = atoi(subTokens[t]);
 731             }
 732
 733             if(c < count - 1)
 734             {
 735                if(!strcmpi(tokens[c+1], "am")) am = true;
 736                else if(!strcmpi(tokens[c+1], "pm")) pm = true;
 737             }
 738
 739             if(am && hour == 12) hour = 0;
 740             else if(pm && hour < 12) hour += 12;
 741
 742             continue;
 743          }
 744
 745          if(!foundDate)
 746          {
 747             if(strchr(tokens[c], '/') || strchr(tokens[c], '-'))
 748             {
 749                Date date;
 750                if(date.OnGetDataFromString(tokens[c]))
 751                {
 752                   day = date.day;
 753                   year = date.year;
 754                   month = date.month;
 755                }
 756                foundDate = true;
 757             }
 758             else
 759             {
 760                i = atoi(tokens[c]);
 761                if(i > 31)
 762                {
 763                   year = i;
 764                   continue;
 765                }
 766                else if(i)
 767                   day = i;
 768             }
 769          }
 770       }
 771       if(day)
 772       {
 773          Date date { year, month, day };
 774          this.dayOfTheWeek = date.dayOfTheWeek;
 775          this.day = day;
 776          this.minute = minute;
 777          this.second = second;
 778          this.hour = hour;
 779          this.year = year;
 780       }
 781       else if(foundDayOfTheWeek)
 782       {
 783          SecSince1970 weWant;
 784          GetLocalTime();
 785          if(dayOfTheWeek <= this.dayOfTheWeek) dayOfTheWeek += 7;
 786          weWant = (SecSince1970)this + (int)(dayOfTheWeek - this.dayOfTheWeek) * 24 * 60 * 60;
 787          this = (DateTime)weWant;
 788       }
 789       else if(!strcmpi(s, "today") || !strcmpi(s, $"today") ||
 790               !strcmpi(s, "now") || !strcmpi(s, $"now"))
 791          GetLocalTime();
 792       else if(!strcmpi(s, "tomorrow") || !strcmpi(s, $"tomorrow"))
 793       {
 794          SecSince1970 weWant;
 795          GetLocalTime();
 796          weWant = (SecSince1970)this + 24 * 60 * 60;
 797          this = (DateTime)weWant;
 798       }
 799       else if(!strcmpi(s, "yesterday") || !strcmpi(s, $"yesterday"))
 800       {
 801          SecSince1970 weWant;
 802          GetLocalTime();
 803          weWant = (SecSince1970)this - 24 * 60 * 60;
 804          this = (DateTime)weWant;
 805       }
 806       else if(!s[0])
 807       {
 808          this = { };
 809          delete s;
 810          return true;
 811       }
 812       delete s;
 813       return this.day != 0;
 814    }
 815 };
 816
 817 public Time GetTime(void)
 818 {
 819 #if defined(__WIN32__)
 820    return timeGetTime() / 1000.0;
 821 #elif defined(__unix__) || defined(__APPLE__)
 822    struct timeval tp;
 823    struct timezone tzp;
 824    static int secbase = 0;
 825
 826    gettimeofday(&tp, &tzp);
 827
 828    if(!secbase)
 829    {
 830       secbase = (int)tp.tv_sec;
 831       return tp.tv_usec / 1000000.0;
 832    }
 833    return (tp.tv_sec - secbase) + tp.tv_usec / 1000000.0;
 834 #endif
 835 }
 836
 837 public void Sleep(Seconds seconds)
 838 {
 839 #if defined(__WIN32__)
 840    ::Sleep((uint)(seconds * 1000));
 841 #else
 842    if(!seconds)
 843       sched_yield();
 844    else
 845    {
 846       // usleep((uint)(seconds * 1000000));
 847       struct timeval tv = { (int)seconds, (int)((seconds - (int)seconds) * 1000000) };
 848       select(0,null,null,null, &tv);
 849    }
 850 #endif
 851 }
 852
 853 public void RandomSeed(uint seed)
 854 {
 855 #if defined(__linux__) || defined(__DJGPP__)
 856    srandom(seed);
 857 #else
 858    srand(seed);
 859 #endif
 860 }
 861
 862 public int GetRandom(int lo, int hi)
 863 {
 864    if(hi >= lo)
 865    {
 866 #if defined(__linux__) || defined(__DJGPP__)
 867    #define rand_fn random
 868 #else
 869    #define rand_fn rand
 870 #endif
 871       if(hi - lo > RAND_MAX)
 872          return (int)(lo + ((uint)(hi - lo) + 1.0) * (rand_fn() * ((double)RAND_MAX + 1.0) + rand_fn()) / (RAND_MAX * (RAND_MAX + 1.0) + RAND_MAX + 1.0));
 873       else
 874          return (int)(lo + ((uint)(hi - lo) + 1.0) * rand_fn() / (RAND_MAX + 1.0));
 875    }
 876    else
 877       return lo;
 878 }