94 lines
1.9 KiB
Ruby
94 lines
1.9 KiB
Ruby
module RichText
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def self.new(format, text)
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case format
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when "html"; HTML.new(text || "")
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when "markdown"; Markdown.new(text || "")
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when "text"; Text.new(text || "")
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else; nil
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end
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end
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class Base < String
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def spam_score
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link_count = 0
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link_size = 0
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doc = Nokogiri::HTML(to_html)
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if doc.content.length > 0
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doc.xpath("//a").each do |link|
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link_count += 1
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link_size += link.content.length
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end
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link_proportion = link_size.to_f / doc.content.length.to_f
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else
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link_proportion = 0
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end
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return [link_proportion - 0.2, 0.0].max * 200 + link_count * 20
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end
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protected
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def linkify(text)
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if text.html_safe?
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Rinku.auto_link(text, :urls, tag_options(:rel => "nofollow")).html_safe
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else
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Rinku.auto_link(text, :urls, tag_options(:rel => "nofollow"))
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end
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end
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end
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class HTML < Base
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include ActionView::Helpers::TextHelper
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include ActionView::Helpers::TagHelper
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def to_html
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linkify(sanitize(simple_format(self)))
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end
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def to_text
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self
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end
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private
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def sanitize(text)
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Sanitize.clean(text, Sanitize::Config::OSM).html_safe
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end
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end
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class Markdown < Base
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def to_html
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html_parser.render(self).html_safe
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end
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def to_text
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self
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end
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private
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def html_parser
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@@html_renderer ||= Redcarpet::Render::XHTML.new({
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:filter_html => true, :safe_links_only => true
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})
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@@html_parser ||= Redcarpet::Markdown.new(@@html_renderer, {
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:no_intra_emphasis => true, :autolink => true, :space_after_headers => true
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})
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end
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end
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class Text < Base
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include ActionView::Helpers::TextHelper
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def to_html
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linkify(simple_format(ERB::Util.html_escape(self)))
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end
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def to_text
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self
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end
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end
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end
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