REXML parsing example. Parse and format recursively under the directory specified as first arg.

gistfile1.rb

require 'rexml/document'

def showxml(fn)
  doc = REXML::Document.new(open(fn))
  doc.elements.each("//.") { |e|
    x=e
    ps = []
    while x != nil do 
      ps << x.name
      x = x.parent
    end
    path = ps.reverse.inject { |es, e| es + "/" + e }
    id = e.attributes["id"]
    if path then
      puts "  " + path + ((e.text != nil and e.text.strip() != "") ? (" => " + e.text) : "")
    end
    puts "    [" + id + "]" if id
    e.attributes.collect.reject{ |k,v| 
      k.start_with?("xmi:") or k.start_with?("xmlns:")
    }.each { |k,v|
      puts "    @" + k + " = " + v
    }
    puts
  }
end

rootdir = ARGV[0]

Dir["#{rootdir}/**/*.xml"].each { |x|
  puts x + " :"
  showxml(x)
}