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Class: Gem::Commands::UpdateCommand

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
Instance Chain:
Inherits: Gem::Command
Defined in: lib/rubygems/commands/update_command.rb

Class Attribute Summary

::Gem::Command - Inherited

.build_args

Arguments used when building gems.

.build_args=, .extra_args, .extra_args=

Class Method Summary

::Gem::Command - Inherited

.add_common_option,
.add_specific_extra_args

Add a list of extra arguments for the given command.

.common_options,
.new

Initializes a generic gem command named command.

.specific_extra_args

Return an array of extra arguments for the command.

.specific_extra_args_hash

Accessor for the specific extra args hash (self initializing).

Instance Attribute Summary

::Gem::LocalRemoteOptions - Included

#both?

Is fetching of local and remote information enabled?

#local?

Is local fetching enabled?

#remote?

Is remote fetching enabled?

::Gem::Command - Inherited

#defaults

The default options for the command.

#program_name

The name of the command for command-line invocation.

#summary

A short description of the command.

#command

The name of the command.

#options

The options for the command.

::Gem::DefaultUserInteraction - Included

Instance Method Summary

::Gem::VersionOption - Included

#add_platform_option

Add the –platform option to the option parser.

#add_prerelease_option

Add the –prerelease option to the option parser.

#add_version_option

Add the –version option to the option parser.

::Gem::LocalRemoteOptions - Included

#accept_uri_http

Allows OptionParser to handle HTTP URIs.

#add_bulk_threshold_option

Add the –bulk-threshold option.

#add_clear_sources_option

Add the –clear-sources option.

#add_local_remote_options

Add local/remote options to the command line parser.

#add_proxy_option

Add the –http-proxy option.

#add_source_option

Add the –source option.

#add_update_sources_option

Add the –update-sources option.

::Gem::InstallUpdateOptions - Included

#add_install_update_options

Add the install/update options to the option parser.

#install_update_defaults_str

Default options for the gem install command.

::Gem::Command - Inherited

#add_extra_args

Adds extra args from ~/.gemrc.

#add_option

Add a command-line option and handler to the command.

#arguments

Override to provide details of the arguments a command takes.

#begins?

True if long begins with the characters from short.

#defaults_str

Override to display the default values of the command options.

#description

Override to display a longer description of what this command does.

#execute

Override to provide command handling.

#get_all_gem_names

Get all gem names from the command line.

#get_all_gem_names_and_versions

Get all [gem, version] from the command line.

#get_one_gem_name

Get a single gem name from the command line.

#get_one_optional_argument

Get a single optional argument from the command line.

#handle_options

Handle the given list of arguments by parsing them and recording the results.

#handles?

True if the command handles the given argument list.

#invoke

Invoke the command with the given list of arguments.

#invoke_with_build_args

Invoke the command with the given list of normal arguments and additional build arguments.

#merge_options

Merge a set of command options with the set of default options (without modifying the default option hash).

#remove_option

Remove previously defined command-line argument name.

#show_help

Display the help message for the command.

#show_lookup_failure

Display to the user that a gem couldn't be found and reasons why.

#usage

Override to display the usage for an individual gem command.

#when_invoked

Call the given block when invoked.

#add_parser_run_info

Adds a section with title and content to the parser help view.

#configure_options,
#create_option_parser

Creates an option parser and fills it in with the help info for the command.

#parser

Create on demand parser.

#wrap

Wraps text to width

::Gem::UserInteraction - Included

#alert

Displays an alert statement.

#alert_error

Displays an error statement to the error output location.

#alert_warning

Displays a warning statement to the warning output location.

#ask

Asks a question and returns the answer.

#ask_for_password

Asks for a password with a prompt

#ask_yes_no

Asks a yes or no question.

#choose_from_list

Asks the user to answer question with an answer from the given list.

#say

Displays the given statement on the standard output (or equivalent).

#terminate_interaction

Terminates the RubyGems process with the given exit_code

#verbose

Calls say with msg or the results of the block if really_verbose is true.

::Gem::DefaultUserInteraction - Included

::Gem::Text - Included

#clean_text

Remove any non-printable characters and make the text suitable for printing.

#format_text

Wraps text to wrap characters and optionally indents by indent characters.

#levenshtein_distance

This code is based directly on the ::Gem::Text gem implementation Returns a value representing the “cost” of transforming str1 into str2.

#truncate_text

Constructor Details

.newUpdateCommand

[ GitHub ]

  
# File 'lib/rubygems/commands/update_command.rb', line 22

def initialize
  super 'update', 'Update installed gems to the latest version',
    :document => %w[rdoc ri],
    :force    => false

  add_install_update_options

  OptionParser.accept Gem::Version do |value|
    Gem::Version.new value

    value
  end

  add_option('--system [VERSION]', Gem::Version,
             'Update the RubyGems system software') do |value, options|
    value = true unless value

    options[:system] = value
  end

  add_local_remote_options
  add_platform_option
  add_prerelease_option "as update targets"

  @updated   = []
  @installer = nil
end

Instance Method Details

#execute

[ GitHub ]

  
# File 'lib/rubygems/commands/update_command.rb', line 87

def execute

  if options[:system] then
    update_rubygems
    return
  end

  say "Updating installed gems"

  hig = highest_installed_gems

  gems_to_update = which_to_update hig, options[:args].uniq

  updated = update_gems gems_to_update

  updated_names = updated.map { |spec| spec.name }
  not_updated_names = options[:args].uniq - updated_names

  if updated.empty? then
    say "Nothing to update"
  else
    say "Gems updated: #{updated_names.join(' ')}"
    say "Gems already up-to-date: #{not_updated_names.join(' ')}" unless not_updated_names.empty?
  end
end

#rubygems_target_version

[ GitHub ]

  
# File 'lib/rubygems/commands/update_command.rb', line 171

def rubygems_target_version
  version = options[:system]
  update_latest = version == true

  if update_latest then
    version     = Gem::Version.new     Gem::VERSION
    requirement = Gem::Requirement.new ">= #{Gem::VERSION}"
  else
    version     = Gem::Version.new     version
    requirement = Gem::Requirement.new version
  end

  rubygems_update         = Gem::Specification.new
  rubygems_update.name    = 'rubygems-update'
  rubygems_update.version = version

  hig = {
    'rubygems-update' => rubygems_update
  }

  gems_to_update = which_to_update hig, options[:args], :system
  _, up_ver   = gems_to_update.first

  target = if update_latest then
             up_ver
           else
             version
           end

  return target, requirement
end

#update_gem(name, version = Gem::Requirement.default)

[ GitHub ]

  
# File 'lib/rubygems/commands/update_command.rb', line 203

def update_gem name, version = Gem::Requirement.default
  return if @updated.any? { |spec| spec.name == name }

  update_options = options.dup
  update_options[:prerelease] = version.prerelease?

  @installer = Gem::DependencyInstaller.new update_options

  say "Updating #{name}"
  begin
    @installer.install name, Gem::Requirement.new(version)
  rescue Gem::InstallError, Gem::DependencyError => e
    alert_error "Error installing #{name}:\n\t#{e.message}"
  end

  @installer.installed_gems.each do |spec|
    @updated << spec
  end
end

#update_gems(gems_to_update)

[ GitHub ]

  
# File 'lib/rubygems/commands/update_command.rb', line 223

def update_gems gems_to_update
  gems_to_update.uniq.sort.each do |(name, version)|
    update_gem name, version
  end

  @updated
end

#update_rubygems

Update RubyGems software to the latest version.

[ GitHub ]

  
# File 'lib/rubygems/commands/update_command.rb', line 234

def update_rubygems
  check_update_arguments

  version, requirement = rubygems_target_version

  check_latest_rubygems version

  update_gem 'rubygems-update', version

  installed_gems = Gem::Specification.find_all_by_name 'rubygems-update', requirement
  version        = installed_gems.first.version

  install_rubygems version
end

#which_to_update(highest_installed_gems, gem_names, system = false)

[ GitHub ]

  
# File 'lib/rubygems/commands/update_command.rb', line 262

def which_to_update highest_installed_gems, gem_names, system = false
  result = []

  highest_installed_gems.each do |l_name, l_spec|
    next if not gem_names.empty? and
            gem_names.none? { |name| name == l_spec.name }

    highest_remote_ver = highest_remote_version l_spec

    if system or (l_spec.version < highest_remote_ver) then
      result << [l_spec.name, [l_spec.version, highest_remote_ver].max]
    end
  end

  result
end