Small Converter to generate markdown for MoinMoin from github's markdown dialect using Redcarpet.

md_to_moinmoin.rb

#!/usr/bin/env ruby

require 'redcarpet'


class MoinMoin < Redcarpet::Render::Base
    
  def header(text, level)
    prefix = "=" * level
    "\n\n#{prefix} #{text} #{prefix}\n"
  end
  
  def paragraph(text)
    "\n#{text}\n"
  end
  
  def block_code(code, language)
    "\n{{{#!#{language}\n#{code}}}}\n"
  end
  
  def block_quote(quote)
    quote.each_line.map {|l| "    #{l}"}.join  
  end
  
  def list(contents, list_type)
      contents
  end
  
  def list_item(text, list_type)
      "\n * #{text}"
  end
  
  def link(link, title, content)
    "[[#{link}|#{content}]]"
  end
  
  def double_emphasis(text)
      "'''#{text}'''"
  end
  
  def emphasis(text)
      "''#{text}''"
  end
  
end


File.open(ARGV[0], "r") do |f|
  markdown = Redcarpet::Markdown.new(MoinMoin, :fenced_code_blocks => true,
                                     :hard_wrap => true)
  puts markdown.render(f.read)
end