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ðŸ“ ..
ðŸ“„ build_command.rb(859 B)
ðŸ“„ cert_command.rb(6.41 KB)
ðŸ“„ check_command.rb(2.01 KB)
ðŸ“„ cleanup_command.rb(3.85 KB)
ðŸ“„ contents_command.rb(3.12 KB)
ðŸ“„ dependency_command.rb(3.89 KB)
ðŸ“„ environment_command.rb(4.16 KB)
ðŸ“„ fetch_command.rb(1.49 KB)
ðŸ“„ generate_index_command.rb(2.52 KB)
ðŸ“„ help_command.rb(4.56 KB)
ðŸ“„ install_command.rb(5.45 KB)
ðŸ“„ list_command.rb(696 B)
ðŸ“„ lock_command.rb(2.67 KB)
ðŸ“„ mirror_command.rb(395 B)
ðŸ“„ outdated_command.rb(866 B)
ðŸ“„ owner_command.rb(1.84 KB)
ðŸ“„ pristine_command.rb(3.66 KB)
ðŸ“„ push_command.rb(2.02 KB)
ðŸ“„ query_command.rb(8.03 KB)
ðŸ“„ rdoc_command.rb(2.31 KB)
ðŸ“„ search_command.rb(616 B)
ðŸ“„ server_command.rb(2.35 KB)
ðŸ“„ setup_command.rb(12.94 KB)
ðŸ“„ sources_command.rb(3.62 KB)
ðŸ“„ specification_command.rb(2.93 KB)
ðŸ“„ stale_command.rb(704 B)
ðŸ“„ uninstall_command.rb(3.07 KB)
ðŸ“„ unpack_command.rb(4.06 KB)
ðŸ“„ update_command.rb(5.8 KB)
ðŸ“„ which_command.rb(1.87 KB)
ðŸ“„ yank_command.rb(2.4 KB)

Editing: contents_command.rb

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

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Editing: contents_command.rb

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