Class: Gem::Commands::ContentsCommand

Inherits:
Gem::Command show all
Includes:
VersionOption
Defined in:
lib/rubygems/commands/contents_command.rb

Instance Attribute Summary

Attributes inherited from Gem::Command

#command, #defaults, #options, #program_name, #summary

Instance Method Summary collapse

Methods included from VersionOption

#add_platform_option, #add_prerelease_option, #add_version_option

Methods inherited from Gem::Command

add_common_option, #add_extra_args, #add_option, add_specific_extra_args, #begins?, build_args, build_args=, #check_deprecated_options, common_options, #deprecate_option, extra_args, extra_args=, #get_all_gem_names, #get_all_gem_names_and_versions, #get_one_gem_name, #get_one_optional_argument, #handle_options, #handles?, #invoke, #invoke_with_build_args, #merge_options, #remove_option, #show_help, #show_lookup_failure, specific_extra_args, specific_extra_args_hash, #when_invoked

Methods included from UserInteraction

#alert, #alert_error, #alert_warning, #ask, #ask_for_password, #ask_yes_no, #choose_from_list, #say, #terminate_interaction, #verbose

Methods included from DefaultUserInteraction

ui, #ui, ui=, #ui=, use_ui, #use_ui

Methods included from Text

#clean_text, #format_text, #levenshtein_distance, #min3, #truncate_text

Constructor Details

#initialize ⇒ ContentsCommand

Returns a new instance of ContentsCommand.



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# File 'lib/rubygems/commands/contents_command.rb', line 10

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

Instance Method Details

#arguments ⇒ Object

:nodoc:



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# File 'lib/rubygems/commands/contents_command.rb', line 47

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

#defaults_str ⇒ Object

:nodoc:



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# File 'lib/rubygems/commands/contents_command.rb', line 51

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

#description ⇒ Object

:nodoc:



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# File 'lib/rubygems/commands/contents_command.rb', line 55

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

#execute ⇒ Object 



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# File 'lib/rubygems/commands/contents_command.rb', line 67

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 or names.length > 1
  end
end

#files_in(spec) ⇒ Object 



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# File 'lib/rubygems/commands/contents_command.rb', line 86

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

#files_in_default_gem(spec) ⇒ Object 



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# File 'lib/rubygems/commands/contents_command.rb', line 105

def files_in_default_gem(spec)
  spec.files.map do |file|
    case file
    when /\A#{spec.bindir}\//
      [RbConfig::CONFIG['bindir'], $POSTMATCH]
    when /\.so\z/
      [RbConfig::CONFIG['archdir'], file]
    else
      [RbConfig::CONFIG['rubylibdir'], file]
    end
  end
end

#files_in_gem(spec) ⇒ Object 



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# File 'lib/rubygems/commands/contents_command.rb', line 94

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 = /#{Regexp.escape(gem_path)}\//

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

#gem_contents(name) ⇒ Object 



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# File 'lib/rubygems/commands/contents_command.rb', line 118

def gem_contents(name)
  spec = spec_for name

  return false unless spec

  files = files_in spec

  show_files files

  true
end

#gem_install_dir(name) ⇒ Object 



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# File 'lib/rubygems/commands/contents_command.rb', line 130

def gem_install_dir(name)
  spec = spec_for name

  return false unless spec

  say spec.gem_dir

  true
end

#gem_names ⇒ Object

:nodoc:



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# File 'lib/rubygems/commands/contents_command.rb', line 140

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

#path_description(spec_dirs) ⇒ Object

:nodoc:



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# File 'lib/rubygems/commands/contents_command.rb', line 148

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

#show_files(files) ⇒ Object 



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# File 'lib/rubygems/commands/contents_command.rb', line 156

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

#spec_for(name) ⇒ Object 



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# File 'lib/rubygems/commands/contents_command.rb', line 169

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

  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

  return nil
end

#specification_directories ⇒ Object

:nodoc:



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# File 'lib/rubygems/commands/contents_command.rb', line 184

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

#usage ⇒ Object

:nodoc:



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# File 'lib/rubygems/commands/contents_command.rb', line 63

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