Class: Personnummer

Inherits:
Object
  • Object
show all
Defined in:
lib/personnummer.rb

Defined Under Namespace

Classes: Born

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(number) ⇒ Personnummer

Returns a new instance of Personnummer.



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# File 'lib/personnummer.rb', line 8

def initialize(number)
  @valid = false

  # Match the number
  number = number.to_s

  if number.match(/(\d{2}){0,1}(\d{2})(\d{2})(\d{2})([\-\+]{0,1})(\d{3})(\d{0,1})/)
    # Calculate the control digit based on the birth date and serial number
    cd = luhn_algorithm("#{$~[2]}#{$~[3]}#{$~[4]}#{$~[6]}")

    # Set control digit to calculated if it's missing
    @control_digit = $~[7].nil? || $~[7].empty? ? cd : $~[7].to_i

    # Get the different parts of the number
    century  = $~[1].to_i
    year     = $~[2].to_i
    month    = $~[3].to_i
    day      = $~[4].to_i
    @divider  = $~[5]
    @serial   = $~[6].to_i

    # Set default divider if not present
    if @divider.empty?
      @divider = '-'
    end

    # Make the personnummer valid if the checksum is correct
    @valid = true if @control_digit == cd && !$~[7].empty?

    @born  = Born.new(century, year, month, day, @divider)
    @valid = @born.valid? && @valid

    # Get the region name
    @region = region_name(@serial)

    # Check if the person is female based the serial (even == female)
    @female = (@serial % 2 == 0)
  else
    raise ArgumentError.new, "The supplied personnummer is invalid"
  end
end

Instance Attribute Details

#control_digit ⇒ Object (readonly)

Public readonly attributes



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# File 'lib/personnummer.rb', line 6

def control_digit
  @control_digit
end

#region ⇒ Object (readonly)

Public readonly attributes



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# File 'lib/personnummer.rb', line 6

def region
  @region
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/personnummer.rb', line 58

def ==(other)
  other = self.class.new(other) if other.is_a?(String) || other.is_a?(Integer)

  to_s == other.to_s
end

#age ⇒ Object 



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# File 'lib/personnummer.rb', line 50

def age
  @born.age
end

#born ⇒ Object 



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# File 'lib/personnummer.rb', line 54

def born
  @born.to_date
end

#co_ordination_number? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/personnummer.rb', line 87

def co_ordination_number?
  @born.co_ordination_number?
end

#female? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/personnummer.rb', line 83

def female?
  @female
end

#male? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/personnummer.rb', line 79

def male?
  !@female
end

#to_s ⇒ Object 



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# File 'lib/personnummer.rb', line 64

def to_s
  born_string = born.strftime("%y%m%d")

  if co_ordination_number?
    day = born_string[4..6].to_i + 60
    born_string = [born_string[0..3], "%02d" % day].join
  end

  "%s%s%03d%d" % [born_string, @divider, @serial, @control_digit]
end

#valid? ⇒ Boolean

Returns:

  • (Boolean) 


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

def valid?
  @valid
end