Using Vocabulary Loader

vocabs.rb

# The ruby-rdf vocabulary loader is used to maintain the vocabularies in the core library.
# There's a rake task that is the main way it is used and serves as a good reference.
# https://github.com/ruby-rdf/rdf/blob/develop/Rakefile

rake gen_vocabs

# Generate lib/rdf/vocab/cc.rb
# Generate lib/rdf/vocab/cert.rb
# Generate lib/rdf/vocab/dc.rb
# Generate lib/rdf/vocab/dc11.rb
# ...

# If you want to add vocabularies, you can do that in the Rakefile 
# or you can just use the VocabularyLoader class

VOCABS = {
  :dc     => {:prefix => "http://purl.org/dc/terms/"},
  :dc11   => {:prefix => "http://purl.org/dc/elements/1.1/"}
}

VOCABS.each do |id, v|
  puts "Generate some/path/#{id}.rb"
  begin
    out = StringIO.new
    loader = OregonDigital::RDF::VocabularyLoader.new(id.to_s.upcase)
    loader.prefix = v[:prefix]
    loader.source = v[:source] if v[:source]
    loader.extra = v[:extra] if v[:extra]
    loader.fetch = v.fetch(:fetch, true)
    loader.strict = v.fetch(:strict, true)
    loader.output = out
    loader.run
    out.rewind
    File.open("some/path/#{id}.rb", "w") {|f| f.write out.read}
  rescue
    puts "Failed to load #{id}: #{$!.message}"
  end
end