discourse/lib/markdown_linker.rb

# Helps create links using markdown (where references are at the bottom)
class MarkdownLinker

  def initialize(base_url)
    @base_url = base_url
    @index = 1
    @markdown_links = {}
    @rendered = 1
  end

  def create(title, url)
    @markdown_links[@index] = "#{@base_url}#{url}"    
    result = "[#{title}][#{@index}]"
    @index += 1    
    result
  end

  def references
    result = ""
    (@rendered..@index-1).each do |i|
      result << "  [#{i}]: #{@markdown_links[i]}\n"
    end
    @rendered = @index
    result
  end
  
end