A auto-updated scripts for topcoder arena

Rakefile

require 'rexml/document'
require 'open-uri'

task :default => :run

task :run do
    sh '(java -classpath "lib/*" com.topcoder.client.contestApplet.runner.generic www.topcoder.com 5001 >/dev/null 2>&1 &)'
end

task :update do
    document = REXML::Document.new(open('http://www.topcoder.com/contest/arena/ContestAppletProd.jnlp'))

    dependencies = []
    document.each_element('jnlp/resources/jar') do |jar|
        dependencies << jar.attribute('href')
    end

    rm_rf 'lib'
    mkdir 'lib'
    chdir 'lib'
    dependencies.each do |dependency|
        sh "wget -c \"#{dependency}\""
    end
    chdir '..'
end

task :make => :update do
    sh "tar czvf topcoder.tar.gz run.bat run.sh lib/"
end