61 lines
1.6 KiB
Ruby
61 lines
1.6 KiB
Ruby
# frozen_string_literal: true
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module Onebox
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module Engine
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class PubmedOnebox
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include Engine
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include LayoutSupport
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matches_regexp(/^https?:\/\/(?:(?:\w)+\.)?(www.ncbi.nlm.nih)\.gov(?:\/)?\/pubmed\/\d+/)
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private
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def xml
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return @xml if defined?(@xml)
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doc = Nokogiri::XML(URI.join(@url, "?report=xml&format=text").open)
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pre = doc.xpath("//pre")
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@xml = Nokogiri::XML("<root>" + pre.text + "</root>")
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end
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def authors
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initials = xml.css("Initials").map { |x| x.content }
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last_names = xml.css("LastName").map { |x| x.content }
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author_list = (initials.zip(last_names)).map { |i, l| i + " " + l }
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if author_list.length > 1 then
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author_list[-2] = author_list[-2] + " and " + author_list[-1]
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author_list.pop
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end
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author_list.join(", ")
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end
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def date
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xml.css("PubDate")
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.children
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.map { |x| x.content }
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.select { |s| !s.match(/^\s+$/) }
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.map { |s| s.split }
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.flatten
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.sort
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.reverse
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.join(" ") # Reverse sort so month before year.
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end
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def data
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{
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title: xml.css("ArticleTitle").text,
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authors: authors,
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journal: xml.css("Title").text,
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abstract: xml.css("AbstractText").text,
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date: date,
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link: @url,
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pmid: match[:pmid]
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}
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end
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def match
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@match ||= @url.match(%r{www\.ncbi\.nlm\.nih\.gov/pubmed/(?<pmid>[0-9]+)})
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end
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end
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end
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end
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