Class: Datasets::PostalCodeJapan

Inherits:
Dataset
  • Object
show all
Defined in:
lib/datasets/postal-code-japan.rb

Defined Under Namespace

Classes: Record

Constant Summary collapse

VALID_READINGS = 
[
  :lowercase,
  :uppercase,
  :romaji,
]

Instance Attribute Summary

Attributes inherited from Dataset

#metadata

Instance Method Summary collapse

Methods inherited from Dataset

#clear_cache!, #to_table

Constructor Details

#initialize(reading: :lowercase) ⇒ PostalCodeJapan

Returns a new instance of PostalCodeJapan.



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# File 'lib/datasets/postal-code-japan.rb', line 40

def initialize(reading: :lowercase)
  super()
  @reading = reading
  unless VALID_READINGS.include?(@reading)
    message = ":reading must be one of ["
    message << VALID_READINGS.collect(&:inspect).join(", ")
    message << "]: #{@reading.inspect}"
    raise ArgumentError, message
  end
  @metadata.id = "postal-code-japan-#{@reading}"
  @metadata.name = "Postal code in Japan (#{@reading})"
  @metadata.url = "https://www.post.japanpost.jp/zipcode/download.html"
  @metadata.licenses = ["CC0-1.0"]
  @metadata.description = "Postal code in Japan (reading: #{@reading})"
end

Instance Method Details

#each(&block) ⇒ Object 



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# File 'lib/datasets/postal-code-japan.rb', line 56

def each(&block)
  return to_enum(__method__) unless block_given?

  open_data do |input|
    utf8_data = input.read.encode(Encoding::UTF_8, Encoding::CP932)
    options = {
      quote_char: nil,
      strip: %Q["],
    }
    if @reading == :romaji
      CSV.parse(utf8_data, **options) do |row|
        yield(Record.new(nil,
                         nil,
                         row[0],
                         row[4],
                         row[5],
                         row[6],
                         row[1],
                         row[2],
                         row[3],
                         false,
                         false,
                         false,
                         false,
                         false,
                         nil))
      end
    else
      CSV.parse(utf8_data, **options) do |row|
        yield(Record.new(row[0],
                         row[1].rstrip,
                         row[2],
                         row[3],
                         row[4],
                         row[5],
                         row[6],
                         row[7],
                         row[8],
                         (row[9] == "1"),
                         (row[10] == "1"),
                         (row[11] == "1"),
                         (row[12] == "1"),
                         (row[13] != "0"),
                         convert_change_reason(row[14])))
      end
    end
  end
end