64 lines
1.5 KiB
Ruby
64 lines
1.5 KiB
Ruby
require "rss/1.0"
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module RSS
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DC_PREFIX = 'dc'
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DC_URI = "http://purl.org/dc/elements/1.1/"
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RDF.install_ns(DC_PREFIX, DC_URI)
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module DublinCoreModel
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extend BaseModel
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ELEMENTS = []
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def self.append_features(klass)
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super
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klass.module_eval(<<-EOC, *get_file_and_line_from_caller(1))
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%w(title description creator subject publisher
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contributor type format identifier source
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language relation coverage rights).each do |x|
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install_text_element("\#{DC_PREFIX}_\#{x}")
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end
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%w(date).each do |x|
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install_date_element("\#{DC_PREFIX}_\#{x}", 'w3cdtf', x)
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end
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EOC
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end
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def dc_validate(tags)
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counter = {}
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ELEMENTS.each do |x|
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counter[x] = 0
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end
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tags.each do |tag|
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key = "#{DC_PREFIX}_#{tag}"
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raise UnknownTagError.new(tag, DC_URI) unless counter.has_key?(key)
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counter[key] += 1
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raise TooMuchTagError.new(tag, tag_name) if counter[key] > 1
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end
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end
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end
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# For backward compatibility
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DublincoreModel = DublinCoreModel
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class RDF
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class Channel; include DublinCoreModel; end
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class Image; include DublinCoreModel; end
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class Item; include DublinCoreModel; end
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class Textinput; include DublinCoreModel; end
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end
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prefix_size = DC_PREFIX.size + 1
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DublinCoreModel::ELEMENTS.each do |x|
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BaseListener.install_get_text_element(x[prefix_size..-1], DC_URI, "#{x}=")
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end
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end
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