class Gem::Commands::UpdateCommand

Calls superclass method Gem::Command.new

# File lib/rubygems/commands/update_command.rb, line 19
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

# File lib/rubygems/commands/update_command.rb, line 84
def execute
 hig = {}
 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
 if updated.empty? then
 say "Nothing to update"
 else
 say "Gems updated: #{updated.map { |spec| spec.name }.join ' '}"
 end
end

# File lib/rubygems/commands/update_command.rb, line 165
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

# File lib/rubygems/commands/update_command.rb, line 197
def update_gem name, version = Gem::Requirement.default
 return if @updated.any? { |spec| spec.name == name }
 @installer ||= Gem::DependencyInstaller.new options
 success = false
 say "Updating #{name}"
 begin
 @installer.install name, Gem::Requirement.new(version)
 success = true
 rescue Gem::InstallError => e
 alert_error "Error installing #{name}:\n\t#{e.message}"
 success = false
 end
 @installer.installed_gems.each do |spec|
 @updated << spec
 end
end

# File lib/rubygems/commands/update_command.rb, line 218
def update_gems gems_to_update
 gems_to_update.uniq.sort.each do |(name, version)|
 update_gem name, version
 end
 @updated
end

# File lib/rubygems/commands/update_command.rb, line 229
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.last.version
 install_rubygems version
end

# File lib/rubygems/commands/update_command.rb, line 257
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.all? { |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