Class: RBEMigrate::CLI

Inherits:
Object
  • Object
show all
Defined in:
lib/rbenv_migrate.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ CLI

Returns a new instance of CLI.



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# File 'lib/rbenv_migrate.rb', line 6

def initialize
  @options = Optimist::options do
    version "rbenv-migrate #{File.read(File.expand_path("../../VERSION", __FILE__)).strip}"
    banner self.version
    banner "Usage:"
    banner "  rbenv-migrate OLD_VERSION"
    banner "\nOptions:"
    opt :version, "display version number"
    opt :help, "display this message"
    educate_on_error
  end

  @old_version = ARGV.first

  if @old_version.nil? || @old_version == RUBY_VERSION ||
     !Dir["#{ENV['RBENV_ROOT']}/versions/**"].map { |f| File.basename f }.include?(@old_version)
    Optimist::educate
  end
end

Instance Method Details

#run ⇒ Object 



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# File 'lib/rbenv_migrate.rb', line 26

def run
  old_gems = gemspecs_for(@old_version).select do |gem|
    if gem.required_ruby_version =~ Gem::Version.new(RUBY_VERSION)
      true
    else
      $stderr.puts "#{gem.name} #{gem.version} is not compatible with Ruby #{RUBY_VERSION}, skipping."
      false
    end
  end.map(&:name)

  current_gems = gemspecs_for(RUBY_VERSION).map(&:name)

  if (gems_to_install = old_gems - current_gems).any?
    command = Gem::Commands::InstallCommand.new.tap { |c| c.handle_options gems_to_install }
  else
    puts "Your gems in #{RUBY_VERSION} appear to be up-to-date with #{@old_version}."
    exit
  end

  begin
    command.execute
  rescue Gem::SystemExitException
    # Done
    nil
  end
end