Capistrano variables

gistfile1.rb

# Ruby 1.8.7

def show_capistrano_variables(exec_proc = false)
  report = []

  require 'active_support/ordered_hash'
  require 'active_support/core_ext/hash/keys'
  report << "="*20 + " @variables " + "="*20
  ActiveSupport::OrderedHash.new.merge(instance_variable_get("@variables")).stringify_keys.sort.each do |k,v|
    next if %w{password}.include?(k)
    if v.to_s =~ /^#/
      obj = instance_variable_get("@variables")[k.to_sym]
      if exec_proc && v.to_s =~ /^#<Proc/
        begin
          result = obj.class.to_s == 'Proc' ? obj.call : ( obj.class.to_s == 'Array' ? obj.join(',') : obj.to_s )
          report << "#{k.to_s.ljust(20)} : #{result.to_s}"
        rescue
          puts "error [#{k.to_s}], #{$!.message} #{$!.backtrace.first}"
        end
      end
    else
      report << "#{k.to_s.ljust(20)} : #{v.to_s}"
    end
  end

  report << "="*20 + " @roles " + "="*20
  instance_variable_get("@roles").stringify_keys.sort.each do |k,v|
    report << "#{k.to_s.ljust(20)} : #{v.inspect}"
  end
  puts report.join("\n")
end

desc "Show capistrano variables including proc result"
task :var do
  show_capistrano_variables(true)
end