deal with file names, like 001-git-revert.md, to make a content for all of files

index.rb

# encoding: utf-8

def html(num, sname, fname, token)
  str = <<-EOF
        <tr class="episode-wrap#{token}">
          <td class="episode-index">#{num}</td>
          <td class="episode-title">
            <a href="#{fname}">#{sname}</a>
          </td>
        </tr>
      EOF
end

def layout(rows)
  str = <<-EOF.gsub(/^\s{4}/, '')
    ---
    layout: default
    title: Happycasts
    ---
    <section class="container content">
      <table class="index-table">
        <tbody>
        #{rows}
        </tbody>
      </table>
    </section>
  EOF
end

list = ""
count = 0
Dir["[01]*.md"].each do |f|
  count += 1
  a = f.gsub('.md', '').split('-')
  num = a.delete_at(0)
  sname = a.join(' ')
  token = count.even? ? ' even' : ''
  list = html(num, sname, f.gsub('.md', '.html'), token) + list
end

File.open("index.md", 'w+') do |f|
  f.write(layout(list))
end