class Gem::Commands::DependencyCommand

# File lib/rubygems/commands/dependency_command.rb, line 10
def initialize
  super 'dependency',
        'Show the dependencies of an installed gem',
        :version => Gem::Requirement.default, :domain => :local

  add_version_option
  add_platform_option
  add_prerelease_option

  add_option('-R', '--[no-]reverse-dependencies',
             'Include reverse dependencies in the output') do
    |value, options|
    options[:reverse_dependencies] = value
  end

  add_option('-p', '--pipe',
             "Pipe Format (name --version ver)") do |value, options|
    options[:pipe_format] = value
  end

  add_local_remote_options
end

# File lib/rubygems/commands/dependency_command.rb, line 118
def execute
  ensure_local_only_reverse_dependencies

  pattern = name_pattern options[:args]

  dependency =
    gem_dependency pattern, options[:version], options[:prerelease]

  specs = fetch_specs pattern, dependency

  reverse = reverse_dependencies specs

  if options[:pipe_format]
    display_pipe specs
  else
    display_readable specs, reverse
  end
end

# File lib/rubygems/commands/dependency_command.rb, line 207
def name_pattern(args)
  args << '' if args.empty?

  if args.length == 1 and args.first =~ /\A(.*)(i)?\z/m
    flags = $2 ? Regexp::IGNORECASE : nil
    Regexp.new $1, flags
  else
    /\A#{Regexp.union(*args)}/
  end
end