knife.rb that switches Opscode orgs/validators based on git branch

knife.rb

# This knife.rb orig. provided by jtimberman@opscode.com - but any mistakes are mine!

current_dir = File.dirname(__FILE__)

platform = "https://api.opscode.com/organizations"

require 'grit'
branch = Grit::Repo.new("#{current_dir}/..").head.name

case branch
when "dev"
  orgname = "ourfirm-dev"
  url = "#{platform}/#{orgname}"
when "test"
  orgname = "ourfirm-test"
  url = "#{platform}/#{orgname}"
when "production"
  orgname = "ourfirm-production"
  url = "#{platform}/#{orgname}"
end

validation_key          "#{current_dir}/#{orgname}-validator.pem"
chef_server_url         url

log_level                :info
log_location             STDOUT
node_name                "<<username>>"
client_key               "#{current_dir}/<<username>>.pem"
validation_client_name   "#{orgname}-validator"
cache_type               'BasicFile'
cache_options( :path => "#{ENV['HOME']}/.chef/checksums" )
cookbook_path            ["#{current_dir}/../cookbooks"]

cookbook_copyright      "Our Company, Inc."
cookbook_license        "apachev2"
cookbook_email          "cookbooks@ourfirm.com"