public long hoursInDay() { int year = getYear(); int month = getMonth(); int day = getDay(); TimeZone.Rule rule = tz().rule(year); if (TimeZone.isDstDate(rule, rule.dstStart, year, month, day)) { return(23); } if (TimeZone.isDstDate(rule, rule.dstEnd, year, month, day)) { return(25); } return(24); }
////////////////////////////////////////////////////////////////////////// // Formatting ////////////////////////////////////////////////////////////////////////// public string format() { StringBuilder s = new StringBuilder(); int len = pattern.Length; for (int i = 0; i < len; ++i) { // character int c = pattern[i]; // literals if (c == '\'') { while (true) { ++i; if (i >= len) { throw ArgErr.make("Invalid pattern: unterminated literal").val; } c = pattern[i]; if (c == '\'') { break; } s.Append((char)c); } continue; } // character count int n = 1; while (i + 1 < len && pattern[i + 1] == c) { ++i; ++n; } // switch bool invalidNum = false; switch (c) { case 'Y': int y = this.year; switch (n) { case 2: y %= 100; if (y < 10) { s.Append('0'); } s.Append(y); break; case 4: s.Append(y); break; default: invalidNum = true; break; } break; case 'M': if (mon == null) { throw ArgErr.make("Month not available").val; } switch (n) { case 4: s.Append(mon.full(locale())); break; case 3: s.Append(mon.abbr(locale())); break; case 2: if (mon.ordinal() + 1 < 10L) { s.Append('0'); } s.Append(mon.ordinal() + 1); break; case 1: s.Append(mon.ordinal() + 1); break; default: invalidNum = true; break; } break; case 'D': switch (n) { case 3: s.Append(day).Append(daySuffix(day)); break; case 2: if (day < 10) { s.Append('0'); } s.Append(day); break; case 1: s.Append(day); break; default: invalidNum = true; break; } break; case 'W': if (weekday == null) { throw ArgErr.make("Weekday not available").val; } switch (n) { case 4: s.Append(weekday.full(locale())); break; case 3: s.Append(weekday.abbr(locale())); break; default: invalidNum = true; break; } break; case 'V': int woy = weekOfYear(); if (woy < 1) { throw ArgErr.make("Week of year not available").val; } switch (n) { case 3: s.Append(woy).Append(daySuffix(woy)); break; case 2: if (woy < 10) { s.Append('0'); } s.Append(woy); break; case 1: s.Append(woy); break; default: invalidNum = true; break; } break; case 'h': case 'k': int h = this.hour; if (c == 'k') { if (h == 0) { h = 12; } else if (h > 12) { h -= 12; } } switch (n) { case 2: if (h < 10) { s.Append('0'); } s.Append(h); break; case 1: s.Append(h); break; default: invalidNum = true; break; } break; case 'm': switch (n) { case 2: if (min < 10) { s.Append('0'); } s.Append(min); break; case 1: s.Append(min); break; default: invalidNum = true; break; } break; case 's': switch (n) { case 2: if (sec < 10) { s.Append('0'); } s.Append(sec); break; case 1: s.Append(sec); break; default: invalidNum = true; break; } break; case 'S': if (sec != 0 || ns != 0) { switch (n) { case 2: if (sec < 10) { s.Append('0'); } s.Append(sec); break; case 1: s.Append(sec); break; default: invalidNum = true; break; } } break; case 'a': switch (n) { case 1: s.Append(hour < 12 ? "a" : "p"); break; case 2: s.Append(hour < 12 ? "am" : "pm"); break; default: invalidNum = true; break; } break; case 'A': switch (n) { case 1: s.Append(hour < 12 ? "A" : "P"); break; case 2: s.Append(hour < 12 ? "AM" : "PM"); break; default: invalidNum = true; break; } break; case 'f': case 'F': int req = 0, opt = 0; // required, optional if (c == 'F') { opt = n; } else { req = n; while (i + 1 < len && pattern[i + 1] == 'F') { ++i; ++opt; } } int frac = ns; for (int x = 0, tenth = 100000000; x < 9; ++x) { if (req > 0) { req--; } else { if (frac == 0 || opt <= 0) { break; } opt--; } s.Append(frac / tenth); frac %= tenth; tenth /= 10; } break; case 'z': TimeZone.Rule rule = tz.rule(year); switch (n) { case 1: int offset = rule.offset; if (dst) { offset += rule.dstOffset; } if (offset == 0) { s.Append('Z'); break; } if (offset < 0) { s.Append('-'); offset = -offset; } else { s.Append('+'); } int zh = offset / 3600; int zm = (offset % 3600) / 60; if (zh < 10) { s.Append('0'); } s.Append(zh).Append(':'); if (zm < 10) { s.Append('0'); } s.Append(zm); break; case 3: s.Append(dst ? rule.dstAbbr : rule.stdAbbr); break; case 4: s.Append(tz.name()); break; default: invalidNum = true; break; } break; default: if (FanInt.isAlpha(c)) { throw ArgErr.make("Invalid pattern: unsupported char '" + (char)c + "'").val; } // check for symbol skip if (i + 1 < len) { int next = pattern[i + 1]; // don't display symbol between ss.FFF if fractions is zero if (next == 'F' && ns == 0) { break; } // don't display symbol between mm:SS if secs is zero if (next == 'S' && sec == 0 && ns == 0) { break; } } s.Append((char)c); break; } // if invalid number of characters if (invalidNum) { throw ArgErr.make("Invalid pattern: unsupported num of '" + (char)c + "' (x" + n + ")").val; } } return(s.ToString()); }
////////////////////////////////////////////////////////////////////////// // Parse ////////////////////////////////////////////////////////////////////////// internal DateTime parseDateTime(string s, TimeZone defTz, bool check) { try { // parse into fields tzOffset = System.Int32.MaxValue; parse(s); // now figure out what timezone to use TimeZone.Rule defRule = defTz.rule(year); if (tzName != null) { // use defTz if tzName was specified and matches any variations of defTz if (tzName == defTz.name() || tzName == defRule.stdAbbr || tzName == defRule.dstAbbr) { tz = defTz; } // try to map tzName to TimeZone, use defTz as fallback else { tz = TimeZone.fromStr(tzName, false); if (tz == null) { tz = defTz; } } } // if tzOffset was specified... else if (tzOffset != System.Int32.MaxValue) { // figure out what expected offset was for defTz int time = hour * 3600 + min * 60 + sec; int defOffset = defRule.offset + TimeZone.dstOffset(defRule, year, (int)mon.ordinal(), day, time); // if specified offset matches expected offset for defTz then // use defTz, otherwise use a vanilla GMT+/- timezone if (tzOffset == defOffset) { tz = defTz; } else { tz = TimeZone.fromGmtOffset(tzOffset); } } // no tzName or tzOffset specified, use defTz else { tz = defTz; } // construct DateTime return(new DateTime(year, (int)mon.ordinal(), day, hour, min, sec, ns, tzOffset, tz)); } catch (Exception) {} if (check) { throw ParseErr.make("DateTime", s).val; } return(null); }
private DateTime(long ticks, TimeZone tz) { // check boundary conditions 1901 to 2099 if (ticks < minTicks || ticks >= maxTicks) { throw ArgErr.make("Ticks out of range 1901 to 2099").val; } // save ticks, time zone this.m_ticks = ticks; this.m_tz = tz; // compute the year int year = ticksToYear(ticks); // get the time zone rule for this year, and // offset the working ticks by UTC offset TimeZone.Rule rule = m_tz.rule(year); ticks += rule.offset * nsPerSec; // compute the day and month; we may need to execute this // code block up to three times: // 1st: using standard time // 2nd: using daylight offset (if in dst) // 3rd: using standard time (if dst pushed us back into std) int month, day, dstOffset = 0; long rem; while (true) { // recompute year based on working ticks year = ticksToYear(ticks); rem = ticks - yearTicks[year - 1900]; if (rem < 0) { rem += nsPerYear; } // compute day of the year int dayOfYear = (int)(rem / nsPerDay); rem %= nsPerDay; // use lookup tables map day of year to month and day if (isLeapYear(year)) { month = monForDayOfYearLeap[dayOfYear]; day = dayForDayOfYearLeap[dayOfYear]; } else { month = monForDayOfYear[dayOfYear]; day = dayForDayOfYear[dayOfYear]; } // if dstOffset is set to max, then this is // the third time thru the loop: std->dst->std if (dstOffset == System.Int32.MaxValue) { dstOffset = 0; break; } // if dstOffset is non-zero we have run this // loop twice to recompute the date for dst if (dstOffset != 0) { // if our dst rule is wall time based, then we need to // recompute to see if dst wall time pushed us back // into dst - if so then run through the loop a third // time to get us back to standard time if (rule.isWallTime() && TimeZone.dstOffset(rule, year, month, day, (int)(rem / nsPerSec)) == 0) { ticks -= dstOffset * nsPerSec; dstOffset = System.Int32.MaxValue; continue; } break; } // first time in loop; check for daylight saving time, // and if dst is in effect then re-run this loop with // modified working ticks dstOffset = TimeZone.dstOffset(rule, year, month, day, (int)(rem / nsPerSec)); if (dstOffset == 0) { break; } ticks += dstOffset * nsPerSec; } // compute time of day int hour = (int)(rem / nsPerHour); rem %= nsPerHour; int min = (int)(rem / nsPerMin); rem %= nsPerMin; // compute weekday int weekday = (firstWeekday(year, month) + day - 1) % 7; // fields int fields = 0; fields |= ((year - 1900) & 0xff) << 0; fields |= (month & 0xf) << 8; fields |= (day & 0x1f) << 12; fields |= (hour & 0x1f) << 17; fields |= (min & 0x3f) << 22; fields |= (weekday & 0x7) << 28; fields |= (dstOffset != 0 ? 1 : 0) << 31; this.m_fields = fields; }
internal DateTime(int year, int month, int day, int hour, int min, int sec, long ns, int knownOffset, TimeZone tz) { if (year < 1901 || year > 2099) { throw ArgErr.make("year " + year).val; } if (month < 0 || month > 11) { throw ArgErr.make("month " + month).val; } if (day < 1 || day > numDaysInMonth(year, month)) { throw ArgErr.make("day " + day).val; } if (hour < 0 || hour > 23) { throw ArgErr.make("hour " + hour).val; } if (min < 0 || min > 59) { throw ArgErr.make("min " + min).val; } if (sec < 0 || sec > 59) { throw ArgErr.make("sec " + sec).val; } if (ns < 0 || ns > 999999999L) { throw ArgErr.make("ns " + ns).val; } // compute ticks for UTC int doy = dayOfYear(year, month, day); int timeInSec = hour * 3600 + min * 60 + sec; long ticks = (long)yearTicks[year - 1900] + (long)doy * nsPerDay + (long)timeInSec * nsPerSec + ns; // adjust for timezone and dst (we might know the UTC offset) TimeZone.Rule rule = tz.rule(year); bool dst; if (knownOffset == System.Int32.MaxValue) { // don't know offset so compute from timezone rule ticks -= (long)rule.offset * nsPerSec; int dstOffset = TimeZone.dstOffset(rule, year, month, day, timeInSec); if (dstOffset != 0) { ticks -= (long)dstOffset * nsPerSec; } dst = dstOffset != 0; } else { // we known offset, still need to use rule to compute if in dst ticks -= (long)knownOffset * nsPerSec; dst = knownOffset != rule.offset; } // compute weekday int weekday = (firstWeekday(year, month) + day - 1) % 7; // fields int fields = 0; fields |= ((year - 1900) & 0xff) << 0; fields |= (month & 0xf) << 8; fields |= (day & 0x1f) << 12; fields |= (hour & 0x1f) << 17; fields |= (min & 0x3f) << 22; fields |= (weekday & 0x7) << 28; fields |= (dst ? 1 : 0) << 31; // commit this.m_ticks = ticks; this.m_tz = tz; this.m_fields = fields; }