class Gem::Commands::ContentsCommand

# File lib/rubygems/commands/contents_command.rb, line 9
def initialize
  super 'contents', 'Display the contents of the installed gems',
        :specdirs => [], :lib_only => false, :prefix => true

  add_version_option

  add_option(      '--all',
             "Contents for all gems") do |all, options|
    options[:all] = all
  end

  add_option('-s', '--spec-dir a,b,c', Array,
             "Search for gems under specific paths") do |spec_dirs, options|
    options[:specdirs] = spec_dirs
  end

  add_option('-l', '--[no-]lib-only',
             "Only return files in the Gem's lib_dirs") do |lib_only, options|
    options[:lib_only] = lib_only
  end

  add_option(      '--[no-]prefix',
             "Don't include installed path prefix") do |prefix, options|
    options[:prefix] = prefix
  end
end

# File lib/rubygems/commands/contents_command.rb, line 48
def execute
  version = options[:version] || Gem::Requirement.default

  spec_dirs = options[:specdirs].map do |i|
    [i, File.join(i, "specifications")]
  end.flatten

  path_kind = if spec_dirs.empty? then
                spec_dirs = Gem::Specification.dirs
                "default gem paths"
              else
                "specified path"
              end

  gem_names = if options[:all] then
                Gem::Specification.map(&:name)
              else
                get_all_gem_names
              end

  gem_names.each do |name|
    # HACK: find_by_name fails for some reason... ARGH
    # How many places must we embed our resolve logic?
    spec = Gem::Specification.find_all_by_name(name, version).last

    unless spec then
      say "Unable to find gem '#{name}' in #{path_kind}"

      if Gem.configuration.verbose then
        say "\nDirectories searched:"
        spec_dirs.sort.each { |dir| say dir }
      end

      terminate_interaction 1 if gem_names.length == 1
    end

    if spec.default_gem?
      files = spec.files.sort.map do |file|
        case file
        when /\A#{spec.bindir}\//
          [Gem::ConfigMap[:bindir], $POSTMATCH]
        when /\.so\z/
          [Gem::ConfigMap[:archdir], file]
        else
          [Gem::ConfigMap[:rubylibdir], file]
        end
      end
    else
      gem_path  = spec.full_gem_path
      extra     = "/{#{spec.require_paths.join ','}}" if options[:lib_only]
      glob      = "#{gem_path}#{extra}/**/*"
      prefix_re = /#{Regexp.escape(gem_path)}\//
      files     = Dir[glob].map do |file|
        [gem_path, file.sub(prefix_re, "")]
      end
    end

    files.sort.each do |prefix, basename|
      absolute_path = File.join(prefix, basename)
      next if File.directory? absolute_path

      if options[:prefix]
        say absolute_path
      else
        say basename
      end
    end
  end
end