From: Wild Al <bigb123@...>
Date: 2006-10-06T11:13:35+09:00
Subject: Stripping unwanted html

Hi everyone:

I'm trying to strip html with the exception of a few html tags.

I have found the following code:

  def strip_tags(html)
    if html.index("<")
      text = ""
      tokenizer = HTML::Tokenizer.new(html)

      while token = tokenizer.next
        node = HTML::Node.parse(nil, 0, 0, token, false)
        # result is only the content of any Text nodes
        text << node.to_s if node.class == HTML::Text
      end
      # strip any comments, and if they have a newline at the end (ie. 
line with
      # only a comment) strip that too
      text.gsub(/<!--(.*?)-->[\n]?/m, "")
    else
      html # already plain text
    end
end

I'm trying to understand what is going on in this code but cannot find 
documenation for HTML::Tokenizer or HTML::Node.parse.  Does anyone know 
the use of the parameters in the parse method?

In the while loop, how do you access the html tag.  If I could access 
the html tags, I could then decide if I wanted to keep the tag or not.

Thanks for reading,
Wild Al

-- 
Posted via http://www.ruby-forum.com/.