Contents

module Caramelize
  class Wikka2Markdown
    attr_reader :source_body

    def initialize(source_body)
      @source_body = source_body
    end

    def run
      # TODO images: ({{image)(url\=?)?(.*)(}})
      # markdown: ![Tux, the Linux mascot](/assets/images/tux.png)

      replace_headlines
      replace_formatting
      replace_lists
      replace_wiki_links
      replace_links
      replace_code_block

      target_body
    end

    def replace_headlines
      target_body.gsub!(/(======)(.*?)(======)/ ) {|s| '# ' + $2 } #h1
      target_body.gsub!(/(=====)(.*?)(=====)/) {|s| '## ' + $2 }   #h2
      target_body.gsub!(/(====)(.*?)(====)/) {|s| '### ' + $2 }   #h3
      target_body.gsub!(/(===)(.*?)(===)/) {|s| '#### ' + $2 }   #h4
      target_body.gsub!(/(==)(.*?)(==)/) {|s| '##### ' + $2 }   #h5
    end

    def replace_formatting
      target_body.gsub!(/(\*\*)(.*?)(\*\*)/) {|s| '**' + $2 + '**' }   #bold
      target_body.gsub!(/(\/\/)(.*?)(\/\/)/, '*\2*') #italic
      target_body.gsub!(/(__)(.*?)(__)/) {|s| '<u>' + $2 + '</u>'}   #underline
      target_body.gsub!(/(---)/, '  ')   #forced linebreak
    end

    def replace_lists
      target_body.gsub!(/(\t-\s?)(.*)/, '* \2')    # unordered list
      target_body.gsub!(/(~-\s?)(.*)/, '* \2')     # unordered list
      target_body.gsub!(/(    -\s?)(.*)/, '* \2')     # unordered list

      target_body.gsub!(/(~1\)\s?)(.*)/, '1. \2')     # unordered list
      # TODO ordered lists
    end

    def replace_wiki_links
      target_body.gsub!(/[\[]{2}(\w+)[\s|](.+?)[\]]{2}/, '[[\2|\1]]')
    end

    def replace_links
      target_body.gsub!(/[\[]{2}((\w+):[\S][^\| ]*)[\| ](.*)[\]]{2}/,
                 '[\3](\1)')
      target_body.gsub!(/[\[]{2}((\w+):.*)[\]]{2}/, '<\1>')
    end

    def replace_code_block
      target_body.gsub!(/^%%\s(.*?)%%\s?/m) do
        $1.gsub(/^/, '    ')
      end
    end

    def target_body
      @target_body ||= source_body.dup
    end
  end
end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
caramelize-1.1.1	lib/caramelize/filters/wikka_to_markdown.rb
caramelize-1.1.0	lib/caramelize/filters/wikka_to_markdown.rb
caramelize-1.0.0	lib/caramelize/filters/wikka_to_markdown.rb