Module: NaturalEarth::ISO3166

Included in:
Countries, Geometries, Subdivisions
Defined in:
lib/natural_earth/iso3166.rb

Overview

:nodoc:

Instance Method Summary collapse

Instance Method Details

#as_iso3166_1(iso3166) ⇒ Object

Normalize an ISO-3166-1 code (alpha-2, alpha-3 or numeric) or ISO-3166-2 code to ISO-3166 alpha-2

Raises:

  • (ArgumentError) 


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# File 'lib/natural_earth/iso3166.rb', line 6

def as_iso3166_1(iso3166)
  return numeric_to_alpha2(iso3166) if numeric? iso3166

  normalized = extract(reformat(iso3166))
  raise ArgumentError if normalized.length > 3 || normalized.length < 2

  return alpha3_to_alpha2(normalized) if normalized.length == 3

  normalized
end

#as_iso3166_2(iso3166) ⇒ Object

Normalize an ISO-3166-2 code

Raises:

  • (ArgumentError) 


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# File 'lib/natural_earth/iso3166.rb', line 18

def as_iso3166_2(iso3166)
  normalized = reformat(iso3166)
  raise ArgumentError unless normalized.match?(/\A[A-Z]{2}-[A-Z0-9]+\z/)

  normalized
end