Module: HebrewDateSupport::ParshaMethods

Included in:
HebrewDate
Defined in:
lib/support/parshiot.rb

Constant Summary collapse

PARSHA_NAMES =

Parsha names in Ashkenazi and Sephardi pronunciation.

[
  ['Bereshit', 'Bereishis'],
  ['Noach', 'Noach'],
  ['Lech-Lecha', 'Lech Lecha'],
  ['Vayera', 'Vayeira'],
  ['Chayei Sara', 'Chayei Sarah'],
  ['Toldot', 'Toldos'],
  ['Vayetzei', 'Vayeitzei'],
  ['Vayishlach', 'Vayishlach'],
  ['Vayeshev', 'Vayeishev'],
  ['Miketz', 'Mikeitz'],
  ['Vayigash', 'Vayigash'],
  ['Vayechi', 'Vayechi'],
  ['Shemot', 'Shemos'],
  ['Vaera', "Va'eira"],
  ['Bo', 'Bo'],
  ['Beshalach/Shira', 'Beshalach/Shira'],
  ['Yitro', 'Yisro'],
  ['Mishpatim', 'Mishpatim'],
  ['Terumah', 'Terumah'],
  ['Tetzaveh', 'Tetzaveh'],
  ['Ki Tisa', 'Ki Sisa'],
  ['Vayakhel', 'Vayakhel'],
  ['Pekudei', 'Pekudei'],
  ['Vayikra', 'Vayikra'],
  ['Tzav', 'Tzav'],
  ['Shmini', 'Shemini'],
  ['Tazria', 'Tazria'],
  ['Metzora', 'Metzora'],
  ['Achrei Mot', 'Acharei Mos'],
  ['Kedoshim', 'Kedoshim'],
  ['Emor', 'Emor'],
  ['Behar', 'Behar'],
  ['Bechukotai', 'Bechukosai'],
  ['Bamidbar', 'Bamidbar'],
  ['Nasso', 'Nasso'],
  ["Beha'alotcha", "Beha'aloscha"],
  ["Sh'lach", 'Shelach'],
  ['Korach', 'Korach'],
  ['Chukat', 'Chukas'],
  ['Balak', 'Balak'],
  ['Pinchas', 'Pinchas'],
  ['Matot', 'Mattos'],
  ['Masei', 'Masei'],
  ['Devarim', 'Devarim'],
  ['Vaetchanan', "Va'eschanan"],
  ['Eikev', 'Eikev'],
  ["Re'eh", "Re'eh"],
  ['Shoftim', 'Shoftim'],
  ['Ki Teitzei', 'Ki Seitzei'],
  ['Ki Tavo', 'Ki Savo'],
  ['Nitzavim', 'Nitzavim'],
  ['Vayeilech', 'Vayeilech'],
  ["Ha'Azinu", 'Haazinu'],
  ['Vayakhel-Pekudei', 'Vayakhel-Pekudei'],
  ['Tazria-Metzora', 'Tazria-Metzora'],
  ['Achrei Mot-Kedoshim', 'Acharei Mos-Kedoshim'],
  ['Behar-Bechukotai', 'Behar-Bechukosai'],
  ['Chukat-Balak', 'Chukas-Balak'],
  ['Matot-Masei', 'Mattos-Masei'],
  ['Nitzavim-Vayeilech', 'Nitzavim-Vayeilech']
]
SAT_SHORT = 
[-1, 52, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 53, 23, 24, -1, 25,
54, 55, 30, 56, 33, 34, 35, 36, 37, 38, 39, 40, 58, 43, 44, 45,
46, 47, 48, 49, 50]
SAT_LONG = 
[-1, 52, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 53, 23, 24, -1, 25,
54, 55, 30, 56, 33, 34, 35, 36, 37, 38, 39, 40, 58, 43, 44,
45, 46, 47, 48, 49, 59]
MON_SHORT = 
[51, 52, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 20, 53, 23, 24, -1, 25, 54,
55, 30, 56, 33, 34, 35, 36, 37, 38, 39, 40, 58, 43, 44, 45,
46, 47, 48, 49, 59]
MON_LONG = 
[51, 52, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 20, 53, 23, 24, -1, 25, 54,
55, 30, 56, 33, -1, 34, 35, 36, 37, 57, 40, 58, 43, 44, 45,
46, 47, 48, 49, 59]
THU_NORMAL = 
[52, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 20, 53, 23, 24, -1, -1, 25,
54, 55, 30, 56, 33, 34, 35, 36, 37, 38, 39, 40, 58, 43, 44,
45, 46, 47, 48, 49, 50]
THU_NORMAL_ISRAEL = 
[52, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 20, 53, 23, 24, -1, 25, 54,
55, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 58, 43, 44,
45, 46, 47, 48, 49, 50]
THU_LONG = 
[52, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, -1, 25,
54, 55, 30, 56, 33, 34, 35, 36, 37, 38, 39, 40, 58, 43, 44,
45, 46, 47, 48, 49, 50]
SAT_SHORT_LEAP = 
[-1, 52, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,
26, 27, -1, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39,
40, 58, 43, 44, 45, 46, 47, 48, 49, 59]
SAT_LONG_LEAP = 
[-1, 52, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,
26, 27, -1, 28, 29, 30, 31, 32, 33, -1, 34, 35, 36, 37, 57,
40, 58, 43, 44, 45, 46, 47, 48, 49, 59]
MON_SHORT_LEAP = 
[51, 52, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26,
27, -1, 28, 29, 30, 31, 32, 33, -1, 34, 35, 36, 37, 57, 40,
58, 43, 44, 45, 46, 47, 48, 49, 59]
MON_SHORT_LEAP_ISRAEL = 
[51, 52, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26,
27, -1, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
58, 43, 44, 45, 46, 47, 48, 49, 59]
MON_LONG_LEAP = 
[51, 52, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26,
27, -1, -1, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39,
40, 58, 43, 44, 45, 46, 47, 48, 49, 50]
MON_LONG_LEAP_ISRAEL = 
[51, 52, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26,
27, -1, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
41, 42, 43, 44, 45, 46, 47, 48, 49, 50]
THU_SHORT_LEAP = 
[52, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26,
27, 28, -1, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
41, 42, 43, 44, 45, 46, 47, 48, 49, 50]
THU_LONG_LEAP = 
[52, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26,
27, 28, -1, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
41, 42, 43, 44, 45, 46, 47, 48, 49, 59]

Instance Method Summary collapse

Instance Method Details

#parsha(skip_extra = false) ⇒ String

Returns today’s parsha(ios) or an empty string if there are none. names such as Zachor or Hagadol.

Parameters:

  • skip_extra (Boolean) (defaults to: false) —

    if true, do not return “extra” Parsha

Returns:

  • (String) 


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# File 'lib/support/parshiot.rb', line 180

def parsha(skip_extra=false)
  # if today is not Shabbos, then there is no normal parsha reading
  return nil if self.day != 7

  # kvia= whether a Hebrew year is short/regular/long (0/1/2)
  # rosh_hashana= Rosh Hashana of this Hebrew year
  # rosh_hashana_day= day of week Rosh Hashana was on this year
  # week= current week in Hebrew calendar from Rosh Hashana
  # array= the correct index array for this Hebrew year
  # index= the index number of the parsha name
  array = []
  # create a clone of this date
  rosh_hashana = self.class.new_from_hebrew(@hebrew_year, 7, 1)

  # get day Rosh Hashana was on
  rosh_hashana_day = rosh_hashana.day

  # week is the week since the first Shabbos on or after Rosh Hashana
  week = (((@abs_date - rosh_hashana.abs_date) -
    (7 - rosh_hashana_day)) / 7.0).to_i

  # get kvia
  if _cheshvan_long? && !_kislev_short?
    kvia = 2
  elsif !_cheshvan_long? && _kislev_short?
    kvia = 0
  else
    kvia = 1
  end

  # determine appropriate array
  if hebrew_leap_year?
    # not leap year
    case rosh_hashana_day
      when 7 # RH was on a Sat
        if kvia == 0
          array = SAT_SHORT_LEAP
        elsif kvia == 2
          array = @israeli ? SAT_SHORT_LEAP : SAT_LONG_LEAP
        end
      when 2 # RH was on a Mon
        if kvia == 0
          array = @israeli ? MON_SHORT_LEAP_ISRAEL : MON_SHORT_LEAP
        elsif kvia == 2
          array = @israeli ? MON_LONG_LEAP_ISRAEL : MON_LONG_LEAP
        end
      when 3 # RH was on a Tue
        if kvia == 1
          array = @israeli ? MON_LONG_LEAP_ISRAEL : MON_LONG_LEAP
        end
      when 5 # RH was on a Thu
        if kvia == 0
          array = THU_SHORT_LEAP
        elsif kvia == 2
          array = THU_LONG_LEAP
        end
    end
  else
    case rosh_hashana_day
      when 7 # RH was on a Saturday
        if kvia == 0
          array = SAT_SHORT
        elsif kvia == 2
          array = SAT_LONG
        end
      when 2 # RH was on a Monday
        if kvia == 0
          array = MON_SHORT
        elsif kvia == 2
          array = @israeli ? MON_SHORT : MON_LONG
        end
      when 3 # RH was on a Tuesday
        if kvia == 1
          array = @israeli ? MON_SHORT : MON_LONG
        end
      when 5 # RH was on a Thursday
        if kvia == 1
          array = @israeli ? THU_NORMAL_ISRAEL : THU_NORMAL
        elsif kvia == 2
          array = THU_LONG
        end
    end
  end

  # if something goes wrong
  if array.length == 0
    return 'Was not able to set the index array to any of the known types.'
  end

  # get index from array
  index = array[week]

  # If no Parsha this week
  return nil if index < 0

  # if parsha this week
  subindex     = @ashkenaz ? 1 : 0

  unless skip_extra
    extra_parsha = _extra_parsha
    if extra_parsha
      return "#{PARSHA_NAMES[index][subindex]}/#{extra_parsha}"
    end
  end
  PARSHA_NAMES[index][subindex]
end