From: Mark Thomas <mark@...>
Date: 2008-12-13T00:18:01+09:00
Subject: Re: Problem parseing a XML - PullParser

If I understand correctly, you want to keep an IO stream open, and
react to certain elements as they appear? That's a textbook SAX case,
not pull-parsing. Register a SAX handler for your SChange events, and
point your IO stream at it.

I'd use libxml-ruby, but REXML has a stream parser than is SAX-like.
You'd use it something like this (untested)

require "rexml/document"
require "rexml/streamlistener"
include REXML

class Handler
  include StreamListener
  def tag_start name, attrs
    if name=="SChange"
      #do something
      puts attrs
    end
  end
end

Document.parse_stream(your_io_stream, Handler.new)

-- Mark.