Class: PseudoDate

Inherits:
Object show all
Defined in:
lib/pseudo_date/pseudo_date.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(input) ⇒ PseudoDate

Returns a new instance of PseudoDate.



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# File 'lib/pseudo_date/pseudo_date.rb', line 4

def initialize(input)
  @date_hash = if input.is_a?(Hash)
    Hash[input.to_hash.map { |k, v| [k.to_s.downcase.to_sym, v] }]
  else
    input = '00000000' if input.to_s.strip == '19000000'
    @date_hash = input.to_s.strip.to_date_hash
  end
  if @date_hash
    @year = @date_hash[:year].to_s.match('1900') ? '0000' : @date_hash[:year].to_s.strip
    @month = @date_hash[:month].to_s.strip
    @day = @date_hash[:day].to_s.strip
  else
    @year = @month = @day = nil
  end
  if @year && @year.match('~') && @year.length == 3
    @year = @year.to_i
    @year = @year > Date.today.year.to_s.gsub('20','').to_i ? "19#{@year}" : "20#{@year}"
  end
  correct_digits!
  @year.to_s.gsub!('~','')
end

Instance Attribute Details

#date_hash ⇒ Object

Returns the value of attribute date_hash.



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# File 'lib/pseudo_date/pseudo_date.rb', line 2

def date_hash
  @date_hash
end

#day ⇒ Object

Returns the value of attribute day.



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# File 'lib/pseudo_date/pseudo_date.rb', line 2

def day
  @day
end

#month ⇒ Object

Returns the value of attribute month.



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# File 'lib/pseudo_date/pseudo_date.rb', line 2

def month
  @month
end

#year ⇒ Object

Returns the value of attribute year.



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# File 'lib/pseudo_date/pseudo_date.rb', line 2

def year
  @year
end

Instance Method Details

#<(other) ⇒ Object

Comparison Operators =



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# File 'lib/pseudo_date/pseudo_date.rb', line 75

def <(other)
  case self.comparison_mode(other)
  when 'exact'
    self.to_date < other.to_date
  when 'year_month'
    self.year == other.year ? (self.month < other.month) : (self.year < other.year)
  when 'year'
    self.year < other.year
  when 'mixed'
    if self.precision == 'invalid'
      true
    elsif other.precision == 'invalid'
      false
    elsif self.year == other.year
      if self.month == other.month
        self.day.to_i < other.day.to_i
      else
        self.month < other.month
      end
    else
      self.year < other.year
    end
  else
    false
  end
end

#<=>(other) ⇒ Object 



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# File 'lib/pseudo_date/pseudo_date.rb', line 110

def <=>(other)
  self == other ? 0 : (self < other ? -1 : 1)
end

#==(other) ⇒ Object 



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# File 'lib/pseudo_date/pseudo_date.rb', line 106

def ==(other)
  (self.year == other.year) && (self.month == other.month) && (self.day == other.day)
end

#>(other) ⇒ Object 



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# File 'lib/pseudo_date/pseudo_date.rb', line 102

def >(other)
  other < self
end

#precision ⇒ Object 



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# File 'lib/pseudo_date/pseudo_date.rb', line 26

def precision
  correct_digits!
  if @year.nil? || (@year.to_s == '0000' && @month.to_s == '00') || (@year.to_s == "8888")
    "invalid"
  elsif self.to_date
    'exact'
  elsif @month != '00' && @day == '00'
    'year_month'
  elsif @month == '00' && @day == '00'
    'year'
  else
    'invalid'
  end
end

#to_date ⇒ Object

Export Functions =



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# File 'lib/pseudo_date/pseudo_date.rb', line 51

def to_date
  self.valid? ? Date.parse("#{@year}-#{@month}-#{@day}") : nil rescue nil
end

#to_hash ⇒ Object 



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# File 'lib/pseudo_date/pseudo_date.rb', line 68

def to_hash
  @date_hash
end

#to_s ⇒ Object 



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# File 'lib/pseudo_date/pseudo_date.rb', line 55

def to_s
  return "" unless self.valid?
  
  case self.precision
  when 'invalid'; ""
  when 'weak_year'; ""
  when 'exact'; "#{month}/#{day}/#{year}"
  when 'year_month'; "#{month}/#{year}"
  when 'year'; year
  else; ''
  end
end

#valid? ⇒ Boolean

Boolean Questions =

Returns:

  • (Boolean) 


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# File 'lib/pseudo_date/pseudo_date.rb', line 44

def valid?
  !(@date_hash.nil? || @date_hash.empty?)
end