Module: ActionView::Helpers::Markdown

Includes:
CaptureHelper, TagHelper, TextHelper, UrlHelper
Defined in:
lib/flavoured_markdown.rb

Instance Method Summary collapse

Instance Method Details

#flavoured_markdown(str) ⇒ Object Also known as: flavored_markdown 



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# File 'lib/flavoured_markdown.rb', line 13

def flavoured_markdown(str)
  str = RDiscount.new(str, :smart, :filter_styles, :filter_html).to_html

  # Extract pre blocks
  str = extract_markup(str, :pre)

  # Undo markdown's html encoding of breaks
  str.gsub!(%r{&lt;br\s*\/?>}m, "<br/>")

  # Undo markdowns' html encoding of hyperlinks, except for those that
  # contain an on* attribute which may contain javascript code.
  str.gsub!(%r{&lt;a\s(.*?)&lt;/a>}m) do
    match = $1
    match =~ %r{\son\w}m ? "&lt;a #{match}&lt;/a>" : "<a #{match}</a>"
  end

  # Extract hyperlink html code
  str = extract_markup(str, :a)

  # Auto hyperlink urls and email addresses
  str = auto_link(str, :all) do |txt|
    txt.size < 55 ? txt : truncate(txt, :length => 50, :omission => "...")
  end

  # Extract the new hyperlinks
  str = extract_markup(str, :a)

  # preserve whitespace for haml
  #str = str.chomp("\n").gsub(/\n/, '&#x000A;').gsub(/\r/, '')

  # Prevent an orphan for P and LI tags
  str.gsub!(%r{<(p|li)\b[^>]*>(.*?)</\1>}m) do |match|
    last_space_index = match.rindex(' ')
    if last_space_index
      match = match.slice(0, last_space_index) + "&#160;" + match.slice(last_space_index + 1, match.length - last_space_index - 1)
    end
    match
  end

  # Add css class "last" to last P tag if it's the last element
  str.sub!(%r{<p>(.*?)</p>\Z}, "<p class=\"last\">\\1</p>")

  # Turn 3 consecutive dot characters into an ellipsis character
  str = hellip(str)

  # Put back in the previously extracted markup
  str = add_extracted_markup(str)
  
  str
end