Change simple format

Hi,   I am changed simple format method and added first line code for replacing spaces for formatting in this it works but other code means new line paragraphs are not working?    I want a such method which format all white spaces, new line, paragraphs.    how it possible in ruby?

example:

def my_format(text)     text.gsub!(/(' ')/, "&nbsp;")     text.gsub!(/(\r\n|\n|\r)/, "\n") # lets make them newlines crossplatform     text.gsub!(/\n\n+/, "\n\n") # zap dupes     text.gsub!(/\n\n/, '</p>\0<p>') # turn two newlines into paragraph     text.gsub!(/([^\n])(\n)([^\n])/, '\1\2<br />\3') # turn single newline into     content_tag("p", text)   end