PetitParser question parsing HTML meta tags

This is kind of a "I'm tired of thinking about this and not making much progress for the amount of time I'm putting in question" but here it is: 



I'm trying to parse descriptions from HTML meta elements.  I can't use Soup because there isn't a working GemStone port.  

I've got it to work with the structure:

<meta name="description" content="my description">

and 

<meta name="Description" content="my description">


but I'm running into instances of: 

<meta http-equiv="description" content="my description">

and

<meta http-equiv="Description" content="my description">


and am having trouble adapting my parsing code (such as it is). 


The parsing code that addresses the first two cases is:



parseHtmlPageForDescription: htmlString
  | startParser endParser ppStream descParser result text lower str doubleQuoteIndex |
  lower := 'escription' asParser.
  startParser := '<meta name=' asParser , #'any' asParser , #'any' asParser.
  endParser := '>' asParser.
  ppStream := htmlString readStream asPetitStream.
  descParser := ((#'any' asParser starLazy: startParser , lower)
    , (#'any' asParser starLazy: endParser)) ==> #'second'.
  result := descParser parse: ppStream.
  text := (result
    inject: (WriteStream on: String new)
    into: [ :stream :char | 
      stream nextPut: char.
      stream ])
    contents trimBoth.
  str := text copyFrom: (text findString: 'content=') + 9 to: text size.
  doubleQuoteIndex := 8 - ((str last: 7) indexOf: $").
  ^ str copyFrom: 1 to: str size - doubleQuoteIndex


I can't figure out how to change the startParser parser to accept the second idiom.  And maybe there's a better approach altogether.  Anyway.  If anyone has any ideas on different approaches I'd appreciate learning them.  


Thanks for giving it some thought

Paul