Method execute

ruby/engine/openstudio_cli.rb:1308–1365

Executes the RubyGems gem install process, using the RubyGems options @param [Array] sub_argv Options passed to the gem_install command from the user input @return [Fixnum] Return status

(sub_argv)

  # @return [Fixnum] Return status
  #
  def execute(sub_argv)
    require 'rubygems'
    require 'rubygems/commands/install_command'

    $logger.info "InstallGem, sub_argv = #{sub_argv}"

    options = {}

    # Parse the options
    opts = OptionParser.new do |o|
      o.banner = 'Usage: openstudio gem_install gem_name gem_version'
      o.separator ''
      o.separator 'Options:'
      o.separator ''
    end

    # Parse the options
    argv = parse_options(opts, sub_argv)
    return 0 if argv == nil

    $logger.debug("InstallGem command: #{argv.inspect} #{options.inspect}")

    if argv == []
      $logger.error 'No gem name provided'
      return 1
    end
    gem_name = argv[0]
    gem_version = argv[1]

    cmd = Gem::Commands::InstallCommand.new
    cmd.handle_options ["--no-ri", "--no-rdoc", 'rake', '--version', '0.9']  # or omit --version and the following option to install the latest

    ARGV.clear
    ARGV << gem_name
    if gem_version
      ARGV << '--version'
      ARGV << gem_version
    end

    $logger.info "Installing gem to #{ENV['GEM_HOME']}"

    begin
      cmd.execute
    rescue => e
      $logger.error "Error installing gem: #{e.message} in #{e.backtrace.join("\n")}"
      exit e.exit_code
    rescue LoadError => e
      # DLM: gem install tries to load a Windows dll to access network functionality in win32/resolv
      # Ruby must be built with libffi to enable fiddle extension to enable win32 extension
      $logger.error "gem_install command not yet implemented, requires fiddle extension"
      #$logger.error "#{e.message} in #{e.backtrace.join("\n")}"
      return 1
    end

    $logger.info 'The gem was successfully installed'

    0
  end