class BirthdateFromPesel::Parser
Constants
- MONTHS_MAP
Public Class Methods
new(pesel)
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# File lib/birthdate_from_pesel.rb, line 18 def initialize(pesel) @pesel = pesel end
Public Instance Methods
birthdate()
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# File lib/birthdate_from_pesel.rb, line 22 def birthdate match = @pesel.match(/\A([0-9]{2})([0-9]{2})([0-9]{2})/) if match year, month, day = match.captures Date.new(full_year(month, year), month(month), day.to_i) end end
full_year(month, year)
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# File lib/birthdate_from_pesel.rb, line 31 def full_year(month, year) "#{match_century(month)}#{year}".to_i end
match_century(month)
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# File lib/birthdate_from_pesel.rb, line 35 def match_century(month) case month.chars.first when '8', '9' 18 when '2', '3' 20 when '4', '5' 21 when '6', '7' 22 else 19 end end
month(month)
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# File lib/birthdate_from_pesel.rb, line 50 def month(month) month.chars.tap do |result| MONTHS_MAP.each do |k, v| result[0] = result[0].tr(k.to_s, v.to_s) end end.join.to_i end