Created
December 6, 2013 14:39
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Download the ISO 639-2 codes as RDF and convert to CSV
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require 'rdf/rdfxml' | |
require 'csv' | |
# Gets the ISO639-2 languages from id.loc.gov and saves it as CSV. | |
SRC_URI="http://id.loc.gov/vocabulary/iso639-2.rdf" | |
MADS_LANGUAGE = RDF::URI.new("http://www.loc.gov/mads/rdf/v1#Language") | |
MADS_CODE = RDF::URI.new("http://www.loc.gov/mads/rdf/v1#code") | |
SAVE_AS = File.expand_path("../../../db/fixtures/iso639-2.csv", __FILE__) | |
lc_graph = RDF::Graph.load(SRC_URI, format: :rdfxml) | |
label_literal = RDF::Literal.new(nil, language: :en) | |
CSV.open(SAVE_AS, "wb", force_quotes: true) do |csv| | |
lc_graph.query([nil, RDF.type, MADS_LANGUAGE]).each do |l| | |
lang_row = [] | |
lang_row << l.subject.to_s | |
# code | |
lc_graph.query([l.subject, MADS_CODE, nil]).each do |t| | |
lang_row << t.object.to_s | |
end | |
# label | |
labels = lc_graph.query([l.subject, RDF::RDFS.label, nil]).select do |t| | |
t.object.language == :en | |
end | |
lang_row << labels[0].object.to_s | |
csv << lang_row | |
end | |
end |
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