Gem Versions and Dates

appengine gem versions

require "date"
puts "appengine gem versions: #{Time.now}"
cmd = "gem list | grep appengine"
#puts cmd
gems = `#{cmd}`.split("\n").collect{|v| v.strip }.sort

gems.each do |gem|
  if gem =~ /^(\S+) \((.+)\)$/
    name = $1
    versions = $2.split(",").collect{|v| v.strip }.sort
    puts "#{name}"
    versions.each do |version|
      cmd = "gem specification #{name} -v #{version} | grep date:"
      #puts cmd
      date = Date.parse(`#{cmd}`[/(\d\d\d\d-\d\d-\d\d)/, 1])
      puts "  %-12s %s" % [version, date.strftime("%Y-%m-%d")]
    end
  end
end




% sudo ruby gae_jruby_versions.rb
appengine gem versions: Mon Jan 18 14:51:51 +0900 2010
appengine-jruby-jars
  0.0.6        2009-12-21
  0.0.7.pre    2009-12-15
appengine-rack
  0.0.6        2009-12-21
appengine-sdk
  1.3.0        2009-12-15
appengine-tools
  0.0.8        2010-01-16
google-appengine
  0.0.7        2009-12-21
  0.0.8        2010-01-15