active all the detected links in text block (for Ruby)

text_block_links_activators.rb

# Not work very well but enough for prototiping
# TODO: not very clear url expression

URL_REGEX = /([\S]+\.[\S]+)/ 
def self.activate_links( text )
  text.gsub!( URL_REGEX ) do |url|
    clean_url = url.gsub( /http:\/\//i, '' )
    "<a href=\"http://#{clean_url}\">#{url}</a>"
   end
  
  return text
end

# test
def test_activate_links
  assert_equal( 
    'text with <a href="http://link.com">link.com</a> and more text.',
    activate_links( 'text with link.com and more text.' )
  )
  
  assert_equal( 
    'text with <a href="http://link.com/Image.jpg">link.com/Image.jpg</a> and more text.',
    activate_links( 'text with link.com/Image.jpg and more text.' )
  )
  
  assert_equal( 
    'text with <a href="http://link.com">http://link.com</a> and more text.',
    activate_links( 'text with http://link.com and more text.' )
  )
  
  assert_equal( 
    'text with <a href="http://link.com">link.com</a> and <a href="http://another.link.com.">another.link.com.</a>',
    activate_links( 'text with link.com and another.link.com.' )
  )
end