Ordering XML Attributes with Hpricot?
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From: Axel Etzold on 25 Sep 2009 06:35 -------- Original-Nachricht -------- > Datum: Fri, 25 Sep 2009 10:54:03 +0900 > Von: Lance Pollard <lancejpollard(a)gmail.com> > An: ruby-talk(a)ruby-lang.org > Betreff: Re: Ordering XML Attributes with Hpricot? > This means though I have to do two passes on the XML: > > 1) Modify the nodes with data the way nokogiri or hpricot do it (xpath > and whatnot) > 2) Format the xml using regular expression on pure strings, not using > the xml parsing engines. > > Is that correct? Lance, I remember that Hpricot and Nokogiri both have pretty_print methods, but I have never used them. Also, I don't know whether "pretty" can be defined so that everybody agrees :) Best regards, Axel -- Neu: GMX Doppel-FLAT mit Internet-Flatrate + Telefon-Flatrate f�r nur 19,99 Euro/mtl.!* http://portal.gmx.net/de/go/dsl02
From: Robert Klemme on 25 Sep 2009 09:13 2009/9/25 Lance Pollard <lancejpollard(a)gmail.com>: > This means though I have to do two passes on the XML: > > 1) Modify the nodes with data the way nokogiri or hpricot do it (xpath > and whatnot) > 2) Format the xml using regular expression on pure strings, not using > the xml parsing engines. > > Is that correct? I would not work on the output XML via String replacements. I would rather adjust the output process. For example, if you would be working with REXML you could implement a Formatter which outputs attributes in a particular order. I don't know whether this can be done with Nokogiri or Hpricot as well or as easily. Kind regards robert require 'rexml/document' class OrderedAttributes < REXML::Formatters::Pretty def write_element(elm, out) att = elm.attributes class <<att alias _each_attribute each_attribute def each_attribute(&b) to_enum(:_each_attribute).sort_by {|x| x.name}.each(&b) end end super(elm, out) end end doc = REXML::Document.new(DATA.read) fmt = REXML::Formatters::Pretty.new fmt.write(doc, $stdout) puts fmt = OrderedAttributes.new fmt.write(doc, $stdout) puts __END__ <foo battr="1" aattr="2" cattr="3"> </foo> -- remember.guy do |as, often| as.you_can - without end http://blog.rubybestpractices.com/
From: Lance Pollard on 25 Sep 2009 11:18
> require 'rexml/document' > > class OrderedAttributes < REXML::Formatters::Pretty > def write_element(elm, out) > att = elm.attributes > > class <<att > alias _each_attribute each_attribute > > def each_attribute(&b) > to_enum(:_each_attribute).sort_by {|x| x.name}.each(&b) > end > end > > super(elm, out) > end > end > > doc = REXML::Document.new(DATA.read) > > fmt = REXML::Formatters::Pretty.new > fmt.write(doc, $stdout) > puts > > fmt = OrderedAttributes.new > fmt.write(doc, $stdout) > puts > > __END__ > <foo battr="1" aattr="2" cattr="3"> > </foo> Thanks a lot Robert, I will try that out immediately. Best, Lance -- Posted via http://www.ruby-forum.com/. |