Class: Relaton::Ecma::DataFetcher

Inherits:
Core::DataFetcher
  • Object
show all
Defined in:
lib/relaton/ecma/data_fetcher.rb

Constant Summary collapse

URL = 
"https://www.ecma-international.org/publications-and-standards/"
SOURCES = 
%w[standards technical-reports mementos].freeze

Instance Method Summary collapse

Instance Method Details

#agent ⇒ Object 



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# File 'lib/relaton/ecma/data_fetcher.rb', line 28

def agent
  @agent ||= Mechanize.new.tap { |a| a.user_agent_alias = Mechanize::AGENT_ALIASES.keys.sample }
end

#fetch(_ = nil) ⇒ void

This method returns an undefined value.

Fetch data from Ecma website.



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# File 'lib/relaton/ecma/data_fetcher.rb', line 96

def fetch(_ = nil)
  SOURCES.each { |source| html_index source }
  index.save
  report_errors
end

#filename(bib) ⇒ Object 



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# File 'lib/relaton/ecma/data_fetcher.rb', line 44

def filename(bib)
  id = bib.docidentifier[0].content
  id += " #{bib.edition.content}" if bib.edition
  locality = locality_with_volume bib
  id += " #{locality.reference_from}" if locality
  output_file id
end

#html_index(type) ⇒ Object

Parameters:

  • type (String) 


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# File 'lib/relaton/ecma/data_fetcher.rb', line 78

def html_index(type) # rubocop:disable Metrics/MethodLength
  result = agent.get "#{URL}#{type}/"
  # @last_call_time = Time.now
  result.xpath(
    "//li/span[1]/a",
    "//div[contains(@class, 'entry-content-wrapper')][.//a[.='Download']]",
  ).each do |hit|
    parse_page(hit)
  rescue StandardError => e
    Util.error { "#{e.message}\n#{e.backtrace}" }
  end
end

#index ⇒ Object 



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# File 'lib/relaton/ecma/data_fetcher.rb', line 20

def index
  @index ||= Relaton::Index.find_or_create :ecma, file: "#{INDEXFILE}.yaml"
end

#index_id(bib) ⇒ Object 



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# File 'lib/relaton/ecma/data_fetcher.rb', line 52

def index_id(bib)
  { id: bib.docidentifier[0].content }.tap do |i|
    i[:ed] = bib.edition.content if bib.edition
    locality = locality_with_volume bib
    i[:vol] = locality.reference_from if locality
  end
end

#locality_with_volume(bib) ⇒ Object 



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# File 'lib/relaton/ecma/data_fetcher.rb', line 60

def locality_with_volume(bib)
  bib.extent.each do |e|
    locality = e.locality.find { |l| l.type == "volume" }
    return locality if locality
  end
  nil
end

#log_error(msg) ⇒ Object 



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# File 'lib/relaton/ecma/data_fetcher.rb', line 24

def log_error(msg)
  Util.error msg
end

#parse_page(hit) ⇒ Object

Parameters:

  • hit (Nokogiri::XML::Element) 


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# File 'lib/relaton/ecma/data_fetcher.rb', line 73

def parse_page(hit) # rubocop:disable Metrics/AbcSize, Metrics/MethodLength
  DataParser.new(hit, @errors).parse.each { |item| write_file item }
end

#to_bibxml(bib) ⇒ Object 



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# File 'lib/relaton/ecma/data_fetcher.rb', line 70

def to_bibxml(bib) = bib.to_rfcxml

#to_xml(bib) ⇒ Object 



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# File 'lib/relaton/ecma/data_fetcher.rb', line 68

def to_xml(bib) = bib.to_xml(bibdata: true)

#to_yaml(bib) ⇒ Object 



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# File 'lib/relaton/ecma/data_fetcher.rb', line 69

def to_yaml(bib) = bib.to_yaml

#write_file(bib) ⇒ Object

Parameters:



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# File 'lib/relaton/ecma/data_fetcher.rb', line 33

def write_file(bib)
  file = filename bib
  if @files.include? file
    Util.warn "Duplicate file #{file}"
  else
    @files << file
    File.write file, serialize(bib), encoding: "UTF-8"
    index.add_or_update index_id(bib), file
  end
end