bundler-mem.rb

# config/bundler-mem.rb
require 'action_view'

module Bundler
  class Runtime
    include ActionView::Helpers::NumberHelper

    REQUIRE_ERRORS = [
      /^no such file to load -- (.+)$/i,
      /^Missing \w+ (?:file\s*)?([^\s]+.rb)$/i,
      /^Missing API definition file in (.+)$/i,
      /^cannot load such file -- (.+)$/i,
      /^dlopen\([^)]*\): Library not loaded: (.+)$/i,
    ]
    def require(*groups)
      groups.map! { |g| g.to_sym }
      groups = [:default] if groups.empty?

      @definition.dependencies.each do |dep|
        # Skip the dependency if it is not in any of the requested
        # groups
        next unless ((dep.groups & groups).any? && dep.current_platform?)

        required_file = nil

        begin
          # Loop through all the specified autorequires for the
          # dependency. If there are none, use the dependency's name
          # as the autorequire.
          Array(dep.autorequire || dep.name).each do |file|
            # Allow `require: true` as an alias for `require: <name>`
            file = dep.name if file == true
            required_file = file
            # puts "Before loading: #{file}: #{system("vmmap #{$$} | tail -5")}"
            b = %x(pmap #{$$} | tail -1)[10,40].strip.gsub('K','').to_i
            before = number_to_human_size(b*1024)
            Kernel.require file
            a = %x(pmap #{$$} | tail -1)[10,40].strip.gsub('K','').to_i
            after = number_to_human_size(a*1024)
            # puts "Before loading:\t#{file}:\t#{before}"
            puts "After loading:\t#{file}:\t#{after}"
            puts "Change:\t\t#{file}:\t#{number_to_human_size((a-b)*1024)}\n"
          end
        rescue LoadError => e
          REQUIRE_ERRORS.find { |r| r =~ e.message }
          raise if dep.autorequire || $1 != required_file

          if dep.autorequire.nil? && dep.name.include?('-')
            begin
              namespaced_file = dep.name.gsub('-', '/')
              Kernel.require namespaced_file
            rescue LoadError => e
              REQUIRE_ERRORS.find { |r| r =~ e.message }
              raise if $1 != namespaced_file
            end
          end
        end
      end
    end
  end
end