module Blocks
  BLOCK_TABLE = {
    ">>"      => '<blockquote>',
    "<<"      => '</blockquote>',
    ">||"     => '<pre>',
    "||<"     => '</pre>',
    ">|code|" => '<pre class="prettyprint">',
    "|code|<" => '</pre>'
  }

  def parse text
    block_rex = %r! 
      (^>>)|(^<<)                 # blockquote
      |
      (^>\|\|)|(^\|\|<)           # pre
      |
      (^\>\|code\|)|(^\|code\|\<) # google-code-prettify
    !x

    parse_text = text.gsub(block_rex){|s| BLOCK_TABLE[s]}
    return text if parse_text == nil
    parse_text
  end 

  module_function :parse
end