[ILUG] Re: Re: sed question

[Brian Foster]

  | From: Marcus Furlong <furlongm at hotmail.com>
  | Date: Fri, 15 Aug 2008 23:22:32 +0100
  |[ ,.. ] 
  | Some of the tags contain an attribute, say "my_attribute",
  | which according to the DTD, should only contain certain
  | values. If the value is not valid, I want to remove the
  | attribute entirely. E.g. if ASD SDF DFG FGH GHJ HJK are
  | the valid values for this attribute, then the following:
  | 
  | <third my_attribute="ASD">
  | <third my_attribute="AD AD">
  | <third my_attribute="">
  | <third my_attribute="HJK">
  | 
  | would become:
  | 
  | <third my_attribute="ASD">
  | <third>
  | <third>
  | <third my_attribute="HJK">
  | 
  |[ ... ]  I'm sure there's a perl/sed one liner that could do it.
  | Does anyone know how it could be done somewhat more elegantly?

sed -e '
	s/ my_attribute="ASD"/@="ASD"/g
	s/ my_attribute="SDF"/@="SDF"/g
	s/ my_attribute="DFG"/@="DFG"/g
	s/ my_attribute="FGH"/@="FGH"/g
	s/ my_attribute="GHJ"/@="GHJ"/g
	s/ my_attribute="HJK"/@="HJK"/g
	s/  *my_attribute="[^"]*"//g
	s/@="/ my_attribute="/g
'

 rather common sed(1) trick.
cheers!
	-blf-
-- 
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