87 lines
2.0 KiB
Ruby
87 lines
2.0 KiB
Ruby
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Dir["#{Rails.root}/lib/onebox/engine/*_onebox.rb"].each {|f|
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require_dependency(f.split('/')[-3..-1].join('/'))
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}
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module Oneboxer
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# keep reloaders happy
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unless defined? Oneboxer::Result
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Result = Struct.new(:doc, :changed) do
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def to_html
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doc.to_html
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end
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def changed?
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changed
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end
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end
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end
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def self.preview(url, options=nil)
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options ||= {}
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Oneboxer.invalidate(url) if options[:invalidate_oneboxes]
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Onebox.preview(url, cache: Rails.cache).placeholder_html
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end
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def self.onebox(url, options=nil)
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options ||= {}
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Oneboxer.invalidate(url) if options[:invalidate_oneboxes]
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Onebox.preview(url, cache: Rails.cache).to_s
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end
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def self.oneboxer_exists_for_url?(url)
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Onebox.has_matcher?(url)
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end
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def self.invalidate(url)
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Rails.cache.delete(url)
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end
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# Parse URLs out of HTML, returning the document when finished.
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def self.each_onebox_link(string_or_doc)
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doc = string_or_doc
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doc = Nokogiri::HTML::fragment(doc) if doc.is_a?(String)
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onebox_links = doc.search("a.onebox")
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if onebox_links.present?
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onebox_links.each do |link|
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if link['href'].present?
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yield link['href'], link
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end
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end
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end
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doc
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end
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def self.apply(string_or_doc)
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doc = string_or_doc
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doc = Nokogiri::HTML::fragment(doc) if doc.is_a?(String)
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changed = false
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Oneboxer.each_onebox_link(doc) do |url, element|
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onebox, preview = yield(url,element)
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if onebox
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parsed_onebox = Nokogiri::HTML::fragment(onebox)
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next unless parsed_onebox.children.count > 0
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# special logic to strip empty p elements
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if element.parent &&
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element.parent.node_name.downcase == "p" &&
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element.parent.children.count == 1 &&
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parsed_onebox.children.first.name.downcase == "div"
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element = element.parent
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end
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changed = true
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element.swap parsed_onebox.to_html
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end
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end
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Result.new(doc, changed)
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end
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end
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