Class: MadChatter::MessageListeners::Markdown

Inherits:
Object
  • Object
show all
Defined in:
lib/mad_chatter/message_listeners/markdown.rb

Instance Method Summary collapse

Instance Method Details

#apply_markdown(text) ⇒ Object 



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# File 'lib/mad_chatter/message_listeners/markdown.rb', line 11

def apply_markdown(text)

  # in very clear cases, let newlines become <br /> tags
  text.gsub!(/^[\w\<][^\n]*\n+/) do |x|
    x =~ /\n{2}/ ? x : (x.strip!; x << "  \n")
  end
  
  # inline code (backticks)
  text.gsub!(%r{(^|\s)(\`)(.+?)\2(\s|$)}, %{\\1<code>\\3</code>\\4})

  # autolink email addresses
  text.gsub!(/([\w\.%\+\-]+)@([\w\-]+\.)+([\w]{2,})/i) do |x|
    x = %Q{<a href="mailto:#{$&}">#{$&}</a>}
  end

  # autolink urls
  text.gsub!(/(http|https):\/\/[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,5}(([0-9]{1,5})?\/(\S)+)?/i) do |x|
    href = $&
     # check if we're in a markdown link
    if $` =~ /[(]/
      x = href
    else
      x = %Q{<a target="_blank" href="#{href}">#{href}</a>}
    end
  end
  
  # reference style links: [link text](http://link.url)
  text.gsub!(%r{\[([^\]]+)\]\((\S+(?=\)))\)}, %{<a target="_blank" href="\\2">\\1</a>})
  
  # bold (must come before italic)
  text.gsub!(%r{(^|\s)(\*\*|__)(.+?)\2(\s|$)}, %{\\1<strong>\\3</strong>\\4})
  
  # italic
  text.gsub!(%r{(^|\s)([*_])(.+?)\2(\s|$)}, %{\\1<em>\\3</em>\\4})
  
  return text
end

#handle(message) ⇒ Object

Apply markdown to all messages that pass through



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# File 'lib/mad_chatter/message_listeners/markdown.rb', line 6

def handle(message)
  message.html = apply_markdown(message.filtered_text)
  return message
end