Added Easter calculation
Began moving holidays into data/holidays.csv
This commit is contained in:
Alex Dunae
parent
7268ece923
commit
3260cd8be2
4 changed files with 192 additions and 64 deletions
9
data/holidays.csv
Normal file
9
data/holidays.csv
Normal file
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@ -0,0 +1,9 @@
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month, region, mday, wday, week, name
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1, us, 1, , , 'New Year\'s Day'
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1, ca, 1, , , 'New Year\'s Day'
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1, au, 1, , , 'New Year\'s Day'
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1, christian, 6, , , 'Epiphany'
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1, us, , 1, 3, 'Martin Luther King, Jr. Day'
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3, us, , 1, 3, 'George Washington\'s Birthday'
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3, gr, 25, , , 'Independence Day'
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4, au, 25, , , 'ANZAC Day'
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133
lib/holidays.rb
133
lib/holidays.rb
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@ -20,36 +20,42 @@ module Holidays
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# :wday: Day of the week (0 is Sunday, 6 is Saturday)
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HOLIDAYS_BY_MONTH = {
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1 => [{:mday => 1, :name => 'New Year\'s Day', :regions => [:us, :ca]},
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{:mday => 6, :name => 'Epiphany Day', :regions => [:gr]},
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1 => [{:mday => 1, :name => 'New Year\'s Day', :regions => [:us, :ca, :au]},
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{:mday => 1, :name => 'Australia Day', :regions => [:au]},
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{:mday => 6, :name => 'Epiphany', :regions => [:christian]},
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{:wday => 1, :week => :third, :name => 'Martin Luther King, Jr. Day', :regions => [:us]}],
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3 => [{:wday => 1, :week => :third, :name => 'George Washington\'s Birthday', :regions => [:us]},
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{:mday => 25, :name => 'Independence Day', :regions => [:gr]}],
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4 => [{:mday => 25, :name => 'ANZAC Day', :regions => [:au]}],
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5 => [{:mday => 1, :name => 'Labour Day', :regions => [:fr,:gr]},
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{:mday => 8, :name => 'Victoria 1945', :regions => [:fr]},
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{:wday => 6, :week => :third, :name => 'Armed Forces Day', :regions => [:us]},
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{:wday => 1, :week => :last, :name => 'Memorial Day', :regions => [:us]}],
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6 => [{:mday => 14, :name => 'Flag Day', :regions => [:us]}],
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7 => [{:mday => 4, :name => 'Independence Day', :regions => [:us]},
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6 => [{:mday => 14, :name => 'Flag Day', :regions => [:us]},
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{:wday => 1, :week => :second, :name => 'Queen\'s Birthday', :regions => [:au]}
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],
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7 => [{:mday => 1, :name => 'Canada Day', :regions => [:ca]},
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{:mday => 4, :name => 'Independence Day', :regions => [:us]},
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{:mday => 14, :name => 'Ascension Day', :regions => [:fr]}],
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8 => [{:mday => 15, :name => 'Assumption of Mary', :regions => [:fr, :gr, :christ]}],
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8 => [{:mday => 15, :name => 'Assumption of Mary', :regions => [:fr, :gr, :christian]}],
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9 => [{:wday => 1, :week => :first,:name => 'Labor Day', :regions => [:us]},
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{:wday => 1, :week => :first,:name => 'Labour Day', :regions => [:ca]}],
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10 => [{:wday => 1, :week => :second, :name => 'Columbus Day', :regions => [:us]},
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{:mday => 28, :name => 'National Day', :regions => [:gr]}],
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11 => [{:wday => 4, :week => :fourth, :name => 'Thanksgiving Day', :regions => [:us]},
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{:mday => 11, :name => 'Rememberance Day', :regions => [:ca]},
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{:mday => 11, :name => 'Rememberance Day', :regions => [:ca,:au]},
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{:mday => 11, :name => 'Armistice 1918', :regions => [:fr]},
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{:mday => 1, :name => 'Touissant', :regions => [:fr]}],
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12 => [{:mday => 25, :name => 'Christmas Day', :regions => [:us,:ca,:christ]},
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{:mday => 26, :name => 'Boxing Day', :regions => [:ca,:gr]}]
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12 => [{:mday => 25, :name => 'Christmas Day', :regions => [:us,:ca,:christian,:au]},
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{:mday => 26, :name => 'Boxing Day', :regions => [:ca,:gr,:au]}]
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}
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# Get all holidays on a certain date
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def self.lookup_holidays(date, regions = [:ca, :us])
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def self.by_day(date, regions = [:ca, :us])
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#raise(UnkownRegionError, "No holiday information is available for region '#{region}'") unless known_region?(region)
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regions = [regions] unless regions.kind_of?(Array)
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hbm = HOLIDAYS_BY_MONTH[date.mon]
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holidays = []
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@ -68,7 +74,7 @@ module Holidays
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holidays << h
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elsif h[:wday] == wday
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# by week calculation
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if calculate_mday(year, month, h[:week], h[:wday]) == mday
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if Date.calculate_mday(year, month, h[:week], h[:wday]) == mday
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holidays << h
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end
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end
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@ -77,6 +83,62 @@ module Holidays
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holidays
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end
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#--
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# TODO: do not take full months
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def self.between(start_date, end_date, regions = [:ca,:us])
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regions = [regions] unless regions.kind_of?(Array)
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holidays = []
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dates = {}
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(start_date..end_date).each do |date|
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dates[date.year] = Array.new unless dates[date.year]
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# TODO: test this, maybe should push then flatten
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dates[date.year] << date.month unless dates[date.year].include?(date.month)
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end
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dates.each do |year, months|
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months.each do |month|
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next unless hbm = HOLIDAYS_BY_MONTH[month]
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hbm.each do |h|
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next unless h[:regions].any?{ |reg| regions.include?(reg) }
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day = h[:mday] || Date.calculate_mday(year, month, h[:week], h[:wday])
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holidays << {:month => month, :day => day, :year => year, :name => h[:name], :regions => h[:regions]}
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end
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end
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end
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#puts dates.inspect
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holidays
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end
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# Get the date of Easter in a given year.
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#
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# +year+ must be a valid Gregorian year.
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#--
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# from http://snippets.dzone.com/posts/show/765
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# TODO: check year to ensure Gregorian
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def self.easter(year)
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y = year
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a = y % 19
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b = y / 100
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c = y % 100
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d = b / 4
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e = b % 4
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f = (b + 8) / 25
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g = (b - f + 1) / 3
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h = (19 * a + b - d - g + 15) % 30
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i = c / 4
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k = c % 4
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l = (32 + 2 * e + 2 * i - h - k) % 7
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m = (a + 11 * h + 22 * l) / 451
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month = (h + l - 7 * m + 114) / 31
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day = ((h + l - 7 * m + 114) % 31) + 1
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Date.civil(year, month, day)
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end
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#def self.calculate_mday(yr, mo, wday, int)
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# earliest = 1 + 7 * (int - 1)
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@ -94,6 +156,21 @@ module Holidays
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# earliest + off
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# end
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end
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class Date
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include Holidays
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# Check if the current date is a holiday.
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#
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# Date.civil('2008-01-01').is_holiday?(:ca)
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# => true
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def is_holiday?(regions = [:ca, :us])
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holidays = Holidays.by_day(self, regions)
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holidays.empty?
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end
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# Calculate the day of the month based on week and day of the week.
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#
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# First Monday of Jan, 2008
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@ -107,43 +184,23 @@ module Holidays
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#--
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# see http://www.irt.org/articles/js050/index.htm
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def self.calculate_mday(year, month, week, wday)
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raise ArgumentError, "Week paramater must be one of Holidays::WEEKS" unless WEEKS.include?(week)
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raise ArgumentError, "Week paramater must be one of Holidays::WEEKS." unless WEEKS.include?(week)
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nth = WEEKS[week]
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week = WEEKS[week]
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if nth > 0
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return (nth-1)*7 + 1 + (7 + wday - Date.civil(year, month,(nth-1)*7 + 1).wday)%7
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# :first, :second, :third, :fourth or :fifth
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if week > 0
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return ((week - 1) * 7) + 1 + ((7 + wday - Date.civil(year, month,(week-1)*7 + 1).wday) % 7)
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end
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days = MONTH_LENGTHS[month]
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if month == 2 and Date.civil(year,1,1).leap?
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days = MONTH_LENGTHS[month-1]
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if month == 1 and Date.civil(year,1,1).leap?
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days = 29
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end
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return days - (Date.civil(year, month, days).wday - wday + 8)%7;
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return days - ((Date.civil(year, month, days).wday - wday + 7) % 7)
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end
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def self.holidays_in_range(from, to, regions = [:ca,:us])
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regions = [regions] unless regions.kind_of?(Array)
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holidays = []
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end
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end
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class Date
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include Holidays
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# Date.civil('2008-01-01').is_holiday?(:us)
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def is_holiday?(region = 'us')
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region = region.to_sym
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holidays = Holidays.lookup_holidays(self, region)
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if holidays
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return true
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else
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return false
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end
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end
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end
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34
rakefile.rb
34
rakefile.rb
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@ -13,3 +13,37 @@ Rake::TestTask.new do |t|
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t.verbose = false
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end
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desc 'Generate documentation.'
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Rake::RDocTask.new(:rdoc) do |rdoc|
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rdoc.rdoc_dir = 'doc'
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rdoc.title = 'Ruby Holidays Gem'
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rdoc.options << '--all' << '--inline-source' << '--line-numbers'
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rdoc.rdoc_files.include('README')
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#rdoc.rdoc_files.include('LICENSE')
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rdoc.rdoc_files.include('lib/*.rb')
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#rdoc.rdoc_files.include('lib/holidays/*.rb')
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end
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spec = Gem::Specification.new do |s|
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s.name = "holidays"
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s.version = "0.9.0"
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s.author = "Alex Dunae"
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s.homepage = "http://code.dunae.ca/holidays"
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s.platform = Gem::Platform::RUBY
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s.description = <<-EOF
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A collection of Ruby methods to deal with statutory and other holidays. You deserve a holiday!
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EOF
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s.summary = "A collection of Ruby methods to deal with statutory and other holidays. You deserve a holiday!"
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s.files = FileList["{lib}/**/*"].to_a
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s.test_files = Dir.glob('test/test_*.rb')
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s.has_rdoc = true
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s.extra_rdoc_files = ["README", "LICENSE"]
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s.rdoc_options << '--all' << '--inline-source' << '--line-numbers'
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end
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desc 'Build the gem.'
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Rake::GemPackageTask.new(spec) do |pkg|
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pkg.need_zip = true
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pkg.need_tar = true
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end
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@ -11,57 +11,85 @@ class HolidayTests < Test::Unit::TestCase
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assert @date.respond_to?('is_holiday?')
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end
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def test_calculating_mdays
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assert_equal 21, Holidays.calculate_mday(2008, 1, :third, 1)
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assert_equal 1, Holidays.calculate_mday(2007, 1, :first, 1)
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assert_equal 2, Holidays.calculate_mday(2007, 3, :first, 5)
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assert_equal 25, Holidays.calculate_mday(2008, 5, :last, 1)
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def test_date_ranges
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holidays = Holidays.between(Date.civil(2008,1,1), Date.civil(2008,12,31), :au)
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holidays.each do |h|
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#puts h.inspect
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end
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end
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def test_easter_dates
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assert_equal '1800-04-13', Holidays.easter(1800).to_s
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assert_equal '1899-04-02', Holidays.easter(1899).to_s
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assert_equal '1900-04-15', Holidays.easter(1900).to_s
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assert_equal '1999-04-04', Holidays.easter(1999).to_s
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assert_equal '2000-04-23', Holidays.easter(2000).to_s
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assert_equal '2025-04-20', Holidays.easter(2025).to_s
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assert_equal '2035-03-25', Holidays.easter(2035).to_s
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assert_equal '2067-04-03', Holidays.easter(2067).to_s
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assert_equal '2099-04-12', Holidays.easter(2099).to_s
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end
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def test_calculating_mdays
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# US Memorial day
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assert_equal 29, Date.calculate_mday(2006, 5, :last, 1)
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assert_equal 28, Date.calculate_mday(2007, 5, :last, 1)
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assert_equal 26, Date.calculate_mday(2008, 5, :last, 1)
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assert_equal 25, Date.calculate_mday(2009, 5, :last, 1)
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assert_equal 31, Date.calculate_mday(2010, 5, :last, 1)
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assert_equal 30, Date.calculate_mday(2011, 5, :last, 1)
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# Labour day
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assert_equal 3, Holidays.calculate_mday(2007, 9, :first, 1)
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assert_equal 1, Holidays.calculate_mday(2008, 9, :first, 1)
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assert_equal 7, Holidays.calculate_mday(2009, 9, :first, 1)
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assert_equal 5, Holidays.calculate_mday(2011, 9, :first, 1)
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assert_equal 5, Holidays.calculate_mday(2050, 9, :first, 1)
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assert_equal 4, Holidays.calculate_mday(2051, 9, :first, 1)
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assert_equal 3, Date.calculate_mday(2007, 9, :first, 1)
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assert_equal 1, Date.calculate_mday(2008, 9, :first, 1)
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assert_equal 7, Date.calculate_mday(2009, 9, :first, 1)
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assert_equal 5, Date.calculate_mday(2011, 9, :first, 1)
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assert_equal 5, Date.calculate_mday(2050, 9, :first, 1)
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assert_equal 4, Date.calculate_mday(2051, 9, :first, 1)
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# Canadian thanksgiving
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assert_equal 8, Holidays.calculate_mday(2007, 10, :second, 1)
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assert_equal 13, Holidays.calculate_mday(2008, 10, :second, 1)
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assert_equal 12, Holidays.calculate_mday(2009, 10, :second, 1)
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assert_equal 11, Holidays.calculate_mday(2010, 10, :second, 1)
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assert_equal 8, Date.calculate_mday(2007, 10, :second, 1)
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assert_equal 13, Date.calculate_mday(2008, 10, :second, 1)
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assert_equal 12, Date.calculate_mday(2009, 10, :second, 1)
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assert_equal 11, Date.calculate_mday(2010, 10, :second, 1)
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# Misc
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assert_equal 21, Date.calculate_mday(2008, 1, :third, 1)
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assert_equal 1, Date.calculate_mday(2007, 1, :first, 1)
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assert_equal 2, Date.calculate_mday(2007, 3, :first, 5)
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end
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def test_region_params
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holidays = Holidays.lookup_holidays(@date, :us)
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holidays = Holidays.by_day(@date, :us)
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assert_equal 1, holidays.length
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holidays = Holidays.lookup_holidays(@date, [:us,:ca])
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holidays = Holidays.by_day(@date, [:us,:ca])
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assert_equal 1, holidays.length
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end
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def test_lookup_holidays_spot_checks
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h = Holidays.lookup_holidays(Date.civil(2008,5,1), :gr)
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def test_by_day_spot_checks
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h = Holidays.by_day(Date.civil(2008,5,1), :gr)
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assert_equal 'Labour Day', h[0][:name]
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h = Holidays.lookup_holidays(Date.civil(2045,11,1), :fr)
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h = Holidays.by_day(Date.civil(2045,11,1), :fr)
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assert_equal 'Touissant', h[0][:name]
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end
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def test_lookup_holidays_and_iterate
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holidays = Holidays.lookup_holidays(@date, :ca)
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def test_by_day_and_iterate
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holidays = Holidays.by_day(@date, :ca)
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holidays.each do |h|
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puts h[:name]
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#puts h[:name]
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end
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end
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def test_lookup_holiday
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holidays = Holidays.lookup_holidays(Date.civil(2008,1,21), :ca)
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holidays = Holidays.by_day(Date.civil(2008,1,21), :ca)
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assert_equal 0, holidays.length
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holidays = Holidays.lookup_holidays(Date.civil(2008,1,21), :us)
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holidays = Holidays.by_day(Date.civil(2008,1,21), :us)
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assert_equal 1, holidays.length
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end
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