Module: GS1::Definitions::ClassMethods

Defined in:
lib/gs1/definitions.rb

Overview

Adding defintion class methods.

Constant Summary collapse

DEFINITIONS = 
i[check_digit date length].freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#definitions ⇒ Object (readonly)

Returns the value of attribute definitions.



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# File 'lib/gs1/definitions.rb', line 15

def definitions
  @definitions
end

Instance Method Details

#allowed_lengths ⇒ Object 



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# File 'lib/gs1/definitions.rb', line 71

def allowed_lengths
  lengths[:allowed]
end

#barcode_length ⇒ Object 



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# File 'lib/gs1/definitions.rb', line 63

def barcode_length
  lengths[:barcode]
end

#barcode_max_length ⇒ Object 



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# File 'lib/gs1/definitions.rb', line 67

def barcode_max_length
  lengths[:max_barcode]
end

#define(key, options = {}) ⇒ Object

Raises:



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# File 'lib/gs1/definitions.rb', line 19

def define(key, options = {})
  raise UnknownDefinition, "#{key} is not a valid definition" unless DEFINITIONS.include?(key)

  @definitions ||= {}

  definitions[key] = send("normalize_#{key}_options", options)
end

#lengths ⇒ Object 



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# File 'lib/gs1/definitions.rb', line 75

def lengths
  definitions[:length] || raise(MissingLengthDefinition)
end

#normalize_check_digit_options(_options) ⇒ Object

Currently no support for options.



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# File 'lib/gs1/definitions.rb', line 28

def normalize_check_digit_options(_options)
  {}
end

#normalize_date_options(_options) ⇒ Object

Currently no support for options.



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# File 'lib/gs1/definitions.rb', line 33

def normalize_date_options(_options)
  {}
end

#normalize_length_options(options) ⇒ Object

Defaults barcode length to allowed length if not explicitly defined, only if there is one significant allowed.



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# File 'lib/gs1/definitions.rb', line 39

def normalize_length_options(options)
  options[:allowed] = normalize_multiple_option(options[:allowed])
  options[:barcode] = normalize_singlural_option(options[:barcode])
  options[:max_barcode] = normalize_singlural_option(options[:barcode] || options[:allowed])

  options
end

#normalize_multiple_option(option_value) ⇒ Object 



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# File 'lib/gs1/definitions.rb', line 47

def normalize_multiple_option(option_value)
  case option_value
  when nil then nil
  when Range then option_value.to_a
  when Array then option_value
  else [option_value]
  end
end

#normalize_singlural_option(option_value) ⇒ Object 



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# File 'lib/gs1/definitions.rb', line 56

def normalize_singlural_option(option_value)
  case option_value
  when Array then option_value.last
  else option_value
  end
end