From: "Booth, Peter" <Peter.Booth@...>
Date: 2003-02-13T09:44:40+09:00
Subject: How to use HTMLParser silently? {PlainText email}

Apologies for first sending this as HTML
      
Can anyone help with the following? I am using HTMLParser to extract hidden
fields from a form using the following code. It does what I want, but it
also writes out tokens from the parsing to standard out. Is there anyway to
do this silently?

Peter Booth
       
       
       
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       page = myHttpSession.get(pathQuery)    
        	body  = page.body
            
            # use html parser to extract hidden fields
            w = DumbWriter.new
            f = AbstractFormatter.new(w)

            parser = PageParser.new(f)
            parser.feed(body)
            parser.close
            hiddenFields = parser.hiddenFields
             


# reads the hidden fields in a stream of HTML and exposes them as a Hash

class PageParser < HTMLParser
      attr :hiddenFields
      def initialize(f)
            super( f )
            @hiddenFields=Hash.new
      end
      def do_input(attrs)
            ah = attrs_to_hash attrs
            if ah['type'] == 'hidden'
                name = ah['name']
                value = ah['value']
                @hiddenFields[name] = value
            end
      end 
      def attrs_to_hash( attrs )
            h = {}
            for a, v in attrs
                v = v.split('"')[1]
                h[a] = v ? v : ''
            end
            h
      end
end