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✏️ Editing: contents_command.rb Read Only

# frozen_string_literal: true

require_relative "../command"
require_relative "../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,
          show_install_dir: false

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

add_option("--[no-]show-install-dir",
               "Show only the gem install dir") do |show, options|
      options[:show_install_dir] = show
    end

@path_kind = nil
    @spec_dirs = nil
    @version   = nil
  end

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

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

def description # :nodoc:
    <<-EOF
The contents command lists the files in an installed gem.  The listing can
be given as full file names, file names without the installed directory
prefix or only the files that are requireable.
    EOF
  end

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

def execute
    @version   = options[:version] || Gem::Requirement.default
    @spec_dirs = specification_directories
    @path_kind = path_description @spec_dirs

names = gem_names

names.each do |name|
      found =
        if options[:show_install_dir]
          gem_install_dir name
        else
          gem_contents name
        end

terminate_interaction 1 unless found || names.length > 1
    end
  end

def files_in(spec)
    if spec.default_gem?
      files_in_default_gem spec
    else
      files_in_gem spec
    end
  end

def files_in_gem(spec)
    gem_path  = spec.full_gem_path
    extra     = "/{#{spec.require_paths.join ","}}" if options[:lib_only]
    glob      = "#{gem_path}#{extra}/**/*"
    prefix_re = %r{#{Regexp.escape(gem_path)}/}

Dir[glob].map do |file|
      [gem_path, file.sub(prefix_re, "")]
    end
  end

def files_in_default_gem(spec)
    spec.files.filter_map do |file|
      if file.start_with?("#{spec.bindir}/")
        [RbConfig::CONFIG["bindir"], file.delete_prefix("#{spec.bindir}/")]
      else
        gem spec.name, spec.version

require_path = spec.require_paths.find do |path|
          file.start_with?("#{path}/")
        end

requirable_part = file.delete_prefix("#{require_path}/")

resolve = $LOAD_PATH.resolve_feature_path(requirable_part)&.last
        next unless resolve

[resolve.delete_suffix(requirable_part), requirable_part]
      end
    end
  end

def gem_contents(name)
    spec = spec_for name

return false unless spec

files = files_in spec

show_files files

true
  end

def gem_install_dir(name)
    spec = spec_for name

return false unless spec

say spec.gem_dir

true
  end

def gem_names # :nodoc:
    if options[:all]
      Gem::Specification.map(&:name)
    else
      get_all_gem_names
    end
  end

def path_description(spec_dirs) # :nodoc:
    if spec_dirs.empty?
      "default gem paths"
    else
      "specified path"
    end
  end

def show_files(files)
    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

def spec_for(name)
    spec = Gem::Specification.find_all_by_name(name, @version).first

return spec if spec

say "Unable to find gem '#{name}' in #{@path_kind}"

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

nil
  end

def specification_directories # :nodoc:
    options[:specdirs].flat_map do |i|
      [i, File.join(i, "specifications")]
    end
  end
end

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