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require 'English'
require 'rubygems/command'
require 'rubygems/version_option'

class Gem::Commands::ContentsCommand < Gem::Command

  include Gem::VersionOption

  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

  def arguments # :nodoc:
    "GEMNAME       name of gem to list contents for"
  end

  def defaults_str # :nodoc:
    "--no-lib-only --prefix"
  end

  def usage # :nodoc:
    "#{program_name} GEMNAME [GEMNAME ...]"
  end

  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

end

Filemanager

DIR : / usr/ share/ rubygems/ rubygems/ commands/
Name Type Size Permission Actions
build_command.rb File 859 B 0644
cert_command.rb File 6.41 KB 0644
check_command.rb File 2.01 KB 0644
cleanup_command.rb File 3.82 KB 0644
contents_command.rb File 3.12 KB 0644
dependency_command.rb File 3.89 KB 0644
environment_command.rb File 4.16 KB 0644
fetch_command.rb File 1.49 KB 0644
generate_index_command.rb File 2.52 KB 0644
help_command.rb File 4.56 KB 0644
install_command.rb File 5.45 KB 0644
list_command.rb File 696 B 0644
lock_command.rb File 2.67 KB 0644
mirror_command.rb File 395 B 0644
outdated_command.rb File 866 B 0644
owner_command.rb File 1.9 KB 0644
pristine_command.rb File 3.66 KB 0644
push_command.rb File 2.02 KB 0644
query_command.rb File 8.11 KB 0644
rdoc_command.rb File 2.31 KB 0644
search_command.rb File 616 B 0644
server_command.rb File 2.35 KB 0644
setup_command.rb File 12.94 KB 0644
sources_command.rb File 3.62 KB 0644
specification_command.rb File 2.93 KB 0644
stale_command.rb File 704 B 0644
uninstall_command.rb File 3.07 KB 0644
unpack_command.rb File 4.06 KB 0644
update_command.rb File 5.8 KB 0644
which_command.rb File 1.87 KB 0644
yank_command.rb File 2.4 KB 0644