56 lines
1.4 KiB
Ruby
56 lines
1.4 KiB
Ruby
class Markdowner
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# opts[:allow_images] allows <img> tags
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# opts[:disable_profile_links] disables @username -> /u/username links
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def self.to_html(text, opts = {})
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if text.blank?
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return ""
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end
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exts = [:tagfilter, :autolink]
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root = CommonMarker.render_doc(text.to_s, [:SMART], exts)
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ng = Nokogiri::HTML(root.to_html([:SAFE], exts))
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# change <h1>, <h2>, etc. headings to just bold tags
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ng.css("h1, h2, h3, h4, h5, h6").each do |h|
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h.name = "strong"
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end
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if !opts[:allow_images]
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ng.css("img").remove
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end
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# make links have rel=nofollow
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ng.css("a").each do |h|
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h[:rel] = "nofollow"
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end
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# XXX: t.replace(tx) unescapes HTML, so disable for now. this probably
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# needs to split text into separate nodes and then replace the @username
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# with a proper 'a' node
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if false
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unless opts[:disable_profile_links]
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# make @username link to that user's profile
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ng.search("//text()").each do |t|
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if t.parent && t.parent.name.downcase == "a"
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# don't replace inside <a>s
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next
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end
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tx = t.text.gsub(/\B\@([\w\-]+)/) do |u|
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if User.exists?(:username => u[1 .. -1])
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"<a href=\"/u/#{u[1 .. -1]}\">#{u}</a>"
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else
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u
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end
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end
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t.replace(tx)
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end
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end
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end
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ng.at_css("body").inner_html
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end
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end
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