gistfile1.rb

require 'rexml/document'

xml = REXML::Document.new(File.open("list.xml"))
gg_numbers = Array.new
gg_nicknames = Array.new
gg_list = Array.new
file = "list.txt"

# dodaję do tablicy kolejne JID-y
xml.elements.each("//item") { |element| gg_numbers.push(element.attributes["jid"]) }
# usuwam z każdego JID-u "@gg.jabber.wp.pl", pozostawiając same numery GG
gg_numbers.collect! { |x| x.gsub(/@gg.jabber.wp.pl/, '') }

# dodaję do tablicy kolejne nicki
xml.elements.each("*/item/nickname") { |element| gg_nicknames.push(element.text) }

gg_nicknames_formated = gg_nicknames.collect! {|x| ';;' + x + ';' + x + ';;;'}
gg_numbers_formated = gg_numbers.collect! {|x| x + ';;0;;0;;0;' + "\n"}

gg_list = [gg_nicknames_formated, gg_numbers_formated]
gg_list = gg_list.transpose

File.open(file, 'w+')  { |f| gg_list.each {|i| f << i}}