rst_convert_to_markdown.rb

require 'fileutils'
require 'nokogiri'
require 'open-uri'

BASE_URL = 'http://rst-project.com'

def ordinal n
  case n
  when 1
    "1st"
  when 2
    "2nd"
  when 3
    "3rd"
  else
    "#{n}th"
  end
end

output = []

# Published ep 1 .. 17 (limited) in http://rst-project.com/story/
[*1..17].each do |i|
  resource = "/story/#{ordinal(i)}_stage.php"
  url = URI.join(BASE_URL, resource)

  html = Nokogiri::HTML(open(url))
  title = html.css('.news_ttl').text
  markdown = "# #{i}. #{title}\n"

  html.css('div.news_txt > p').children.to_a[1..-1].each do |elem|
    text = case elem.name
           when "br"
             ""
           when "span"
             if !elem.css('img').empty?
               img = elem.css('img')
               img_url = URI.join(BASE_URL, "/story/#{img.attr('src')}")
               "<img src=\"#{img_url}\" width=\"#{img.attr('width')}\" height=\"#{img.attr('height')}\">\n"
             elsif !elem.text.empty?
               "#{elem.text}\n\n"
             end
           when "text"
             elem.text.gsub("\r\n", "").strip + "\n\n"
           when "ruby"
             "#{elem.children[0]} (#{elem.children[1].text}) "
           end
    next if text.empty?

    markdown += text
  end

  output << markdown
end

puts output.join("\n") + "\n"