lib/eggdrop/date.h File Reference

Go to the source code of this file.

Defines
#define	EGG_TIMEZONE_LOOKUP   -100000
Functions
int	date_timezone ()
int	date_scan (char *timestr, time_t *now, int zone, time_t *timeptr)

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Define Documentation

#define EGG_TIMEZONE_LOOKUP   -100000

Definition at line 4 of file date.h.

Referenced by date_scan().

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Function Documentation

int date_scan	(	char *	timestr,
		time_t *	now,
		int	zone,
		time_t *	timeptr
	)

Definition at line 840 of file date.c.

References Convert(), date_DateDay, date_DateDayNumber, date_DateDayOrdinal, date_DateDSTmode, date_DateHaveDate, date_DateHaveDay, date_DateHaveOrdinalMonth, date_DateHaveRel, date_DateHaveTime, date_DateHaveZone, date_DateHour, date_DateInput, date_DateMeridian, date_DateMinutes, date_DateMonth, date_DateMonthOrdinal, date_Dateparse(), date_DateRelDay, date_DateRelMonth, date_DateRelPointer, date_DateRelSeconds, date_DateSeconds, date_DateTimezone, date_DateYear, date_timezone(), DSTmaybe, DSToff, EGG_TIMEZONE_LOOKUP, MER24, NamedDay(), NamedMonth(), NULL, RelativeDay(), RelativeMonth(), and TM_YEAR_BASE.

{
    struct tm *tm;
    time_t Start;
    time_t Time;
    time_t tod;
    int thisyear;

    /* Look up timezone if required. */
    if (zone == EGG_TIMEZONE_LOOKUP) zone = date_timezone();

    date_DateInput = timestr;
    /* now has to be cast to a time_t for 64bit compliance */
    Start = *now;
    tm = localtime(&Start);
    thisyear = tm->tm_year + TM_YEAR_BASE;
    date_DateYear = thisyear;
    date_DateMonth = tm->tm_mon + 1;
    date_DateDay = tm->tm_mday;
    date_DateTimezone = zone;
    if (zone == -50000) {
        date_DateDSTmode = DSToff;  /* assume GMT */
        date_DateTimezone = 0;
    } else {
        date_DateDSTmode = DSTmaybe;
    }
    date_DateHour = 0;
    date_DateMinutes = 0;
    date_DateSeconds = 0;
    date_DateMeridian = MER24;
    date_DateRelSeconds = 0;
    date_DateRelMonth = 0;
    date_DateRelDay = 0;
    date_DateRelPointer = NULL;

    date_DateHaveDate = 0;
    date_DateHaveDay = 0;
    date_DateHaveOrdinalMonth = 0;
    date_DateHaveRel = 0;
    date_DateHaveTime = 0;
    date_DateHaveZone = 0;

    if (date_Dateparse() || date_DateHaveTime > 1 || date_DateHaveZone > 1 || date_DateHaveDate > 1 ||
      date_DateHaveDay > 1 || date_DateHaveOrdinalMonth > 1) {
        return -1;
    }
    
    if (date_DateHaveDate || date_DateHaveTime || date_DateHaveDay) {
  if (date_DateYear < 0) {
      date_DateYear = -date_DateYear;
  }
  /*
   * The following line handles years that are specified using
   * only two digits.  The line of code below implements a policy
   * defined by the X/Open workgroup on the millinium rollover.
   * Note: some of those dates may not actually be valid on some
   * platforms.  The POSIX standard startes that the dates 70-99
   * shall refer to 1970-1999 and 00-38 shall refer to 2000-2038.
   * This later definition should work on all platforms.
   */

  if (date_DateYear < 100) {
      if (date_DateYear >= 69) {
    date_DateYear += 1900;
      } else {
    date_DateYear += 2000;
      }
  }
  if (Convert(date_DateMonth, date_DateDay, date_DateYear, date_DateHour, date_DateMinutes, date_DateSeconds,
    date_DateMeridian, date_DateDSTmode, &Start) < 0) {
            return -1;
  }
    } else {
        Start = *now;
        if (!date_DateHaveRel) {
            Start -= ((tm->tm_hour * 60L * 60L) +
        tm->tm_min * 60L) + tm->tm_sec;
  }
    }

    Start += date_DateRelSeconds;
    if (RelativeMonth(Start, date_DateRelMonth, &Time) < 0) {
        return -1;
    }
    Start += Time;

    if (RelativeDay(Start, date_DateRelDay, &Time) < 0) {
  return -1;
    }
    Start += Time;
    
    if (date_DateHaveDay && !date_DateHaveDate) {
        tod = NamedDay(Start, date_DateDayOrdinal, date_DateDayNumber);
        Start += tod;
    }

    if (date_DateHaveOrdinalMonth) {
  tod = NamedMonth(Start, date_DateMonthOrdinal, date_DateMonth);
  Start += tod;
    }
    
    *timeptr = Start;
    return 0;
}

int date_timezone

(

)

Definition at line 389 of file date.c.

References now.

Referenced by date_scan(), and RelativeMonth().

{
  struct tm gmt, local;
  time_t now;
  int zone;

  time(&now);
  gmt = *(gmtime(&now));
  local = *(localtime(&now));
  local.tm_isdst = gmt.tm_isdst = 0;
  zone = (int)(mktime(&local) - mktime(&gmt));
  return(zone/60);
}