Class: Jetel::Modules::Iso3166

Inherits:
Module
  • Object
show all
Defined in:
lib/jetel/modules/iso3166/iso3166.rb

Instance Attribute Summary

Attributes inherited from Module

#downloader

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Module

#download_dir, download_dir, #download_source, downloaded_file, #downloaded_file, extract_dir, #extract_dir, extracted_file, #extracted_file, #initialize, #load, #sources, target_dir, #target_dir, #transform_dir, transform_dir, transformed_file, #transformed_file, #unzip

Constructor Details

This class inherits a constructor from Jetel::Modules::Module

Class Method Details

.sources ⇒ Object 



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# File 'lib/jetel/modules/iso3166/iso3166.rb', line 36

def sources
  [
    {
      name: 'iso3166',
      url: 'https://en.wikipedia.org/wiki/ISO_3166-1'
    }
  ]
end

Instance Method Details

#download(global_options, options, args) ⇒ Object 



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# File 'lib/jetel/modules/iso3166/iso3166.rb', line 46

def download(global_options, options, args)
  self.class.sources.pmap do |source|
    download_source(source, global_options.merge(options))
  end
end

#extract(global_options, options, args) ⇒ Object 



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# File 'lib/jetel/modules/iso3166/iso3166.rb', line 52

def extract(global_options, options, args)
  self.class.sources.pmap do |source|
    downloaded_file = downloaded_file(source, global_options.merge(options))
    dest_dir = extract_dir(source, global_options.merge(options))

    puts "Extracting #{downloaded_file}"

    FileUtils.mkdir_p(dest_dir)
    FileUtils.cp(downloaded_file, dest_dir)
  end
end

#transform(global_options, options, args) ⇒ Object 



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# File 'lib/jetel/modules/iso3166/iso3166.rb', line 64

def transform(global_options, options, args)
  self.class.sources.pmap do |source|
    extracted_file = extracted_file(source, global_options.merge(options))
    dest_dir = transform_dir(source, global_options.merge(options))
    FileUtils.mkdir_p(dest_dir)

    puts "Transforming #{extracted_file}"

    page = Nokogiri::HTML(open(extracted_file))
    rows = page.css('table.wikitable.sortable tr')

    headers = [
      'name',
      'alpha2',
      'alpha3',
      'numeric'
    ]

    transformed_file = "#{extracted_file.gsub(extract_dir(source, global_options.merge(options)), dest_dir)}.csv"
    CSV.open(transformed_file, 'w', :write_headers => true, :headers => headers, :quote_char => '"', :force_quotes => true) do |csv|
      rows.each do |row|
        td = row.css('td')

        next if td.length < 4

        name = td[0].css('a').text
        alpha2 = td[1].text
        alpha3 = td[2].text
        numeric = td[3].text

        csv << [
           name,
           alpha2,
           alpha3,
           numeric
        ]
      end
    end
  end
end