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Class: Gem::Commands::FetchCommand

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, ::Gem::Command
Instance Chain:
self, ::Gem::VersionOption, ::Gem::LocalRemoteOptions, ::Gem::Command, ::Gem::UserInteraction, ::Gem::DefaultUserInteraction, ::Gem::Text
Inherits: Gem::Command
Defined in: lib/rubygems/commands/fetch_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

#ui

See DefaultUserInteraction.ui
#ui=

See DefaultUserInteraction.ui=

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::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

#use_ui

See DefaultUserInteraction.use_ui

::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

.new ⇒ FetchCommand

[ GitHub ] 

  


# File 'lib/rubygems/commands/fetch_command.rb', line 11



def initialize
  super 'fetch', 'Download a gem and place it in the current directory'

  add_bulk_threshold_option
  add_proxy_option
  add_source_option
  add_clear_sources_option

  add_version_option
  add_platform_option
  add_prerelease_option
end


  







Instance Method Details



  

    #execute  
  

  [ GitHub ]


  

  


# File 'lib/rubygems/commands/fetch_command.rb', line 46



def execute
  version = options[:version] || Gem::Requirement.default

  platform  = Gem.platforms.last
  gem_names = get_all_gem_names

  gem_names.each do |gem_name|
    dep = Gem::Dependency.new gem_name, version
    dep.prerelease = options[:prerelease]

    specs_and_sources, errors =
      Gem::SpecFetcher.fetcher.spec_for_dependency dep

    if platform then
      filtered = specs_and_sources.select { |s,| s.platform == platform }
      specs_and_sources = filtered unless filtered.empty?
    end

    spec, source = specs_and_sources.max_by { |s,| s.version }

    if spec.nil? then
      show_lookup_failure gem_name, version, errors, options[:domain]
      next
    end

    source.download spec

    say "Downloaded #{spec.full_name}"
  end
end