From: William James <w_a_x_man@...>
Date: 2006-02-21T08:03:43+09:00
Subject: Re: How can I search value from xml

Artit Satanakulpanich wrote:
> How can i search value from xml file such as I want to find from *pubdate *and
> return* **biblioentry
> *Please give me some source code for further study*
> **
> <?xml version="1.0" encoding="ISO-8859-15"?>
> <!DOCTYPE bibliography PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
>           "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
> <bibliography id="personal_identity">
>     <biblioentry id="FHIW13C-1234">
>       <author>
>         <firstname>Godfrey</firstname>
>         <surname>Vesey</surname>
>       </author>
>       <title>Personal Identity: A Philosophical Analysis</title>
>       <publisher>
>         <publishername>Cornell University Press</publishername>
>       </publisher>
>       <pubdate>1977</pubdate>
>    </biblioentry>

class String
  def xtag(s)
    scan( %r!  < #{s}  (?: \s+ (  [^>]*  )  )? >
               ( .*? )  </ #{s} >  !mx ).
      map{ |attr, data|   h = { }
        if attr
          attr.scan( %r!  ( \S+ ) = " ( [^"]* ) "  !x ){ |k,v|
            h[k] = v }
        end
        [ h, data ]
      }
  end
end

gets(nil).xtag("biblioentry").each { |attr,data|
  if data.xtag("pubdate")[0][1] > "1984"
    print attr["id"], data, "\n"
  end
}