Class: Gem::SpecificationCommand

Inherits:
Command
  • Object
show all
Includes:
CommandAids, LocalRemoteOptions, VersionOption
Defined in:
lib/rubygems/gem_commands.rb

Instance Attribute Summary

Attributes inherited from Command

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

Instance Method Summary collapse

Methods included from CommandAids

#begins?, #get_all_gem_names, #get_one_gem_name, #get_one_optional_argument

Methods included from LocalRemoteOptions

#add_local_remote_options, #local?, #remote?

Methods included from VersionOption

#add_version_option

Methods inherited from Command

add_common_option, #add_option, add_specific_extra_args, common_options, extra_args, extra_args=, #handles?, #invoke, #merge_options, #remove_option, #show_help, specific_extra_args, specific_extra_args_hash, #when_invoked

Methods included from DefaultUserInteraction

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

Constructor Details

#initialize ⇒ SpecificationCommand

Returns a new instance of SpecificationCommand.



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# File 'lib/rubygems/gem_commands.rb', line 1329

def initialize
  super('specification', 'Display gem specification (in yaml)',
        {:domain=>:local, :version=>"> 0.0.0"})
  add_version_option('examine')
  add_local_remote_options
  add_option('--all', 'Output specifications for all versions of',
             'the gem') do |value, options|
    options[:all] = true
  end
end

Instance Method Details

#arguments ⇒ Object 



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# File 'lib/rubygems/gem_commands.rb', line 1348

def arguments
  "GEMFILE       Name of a .gem file to examine"
end

#defaults_str ⇒ Object 



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# File 'lib/rubygems/gem_commands.rb', line 1340

def defaults_str
  "--local --version '(latest)'"
end

#execute ⇒ Object 



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# File 'lib/rubygems/gem_commands.rb', line 1352

def execute
  if local?
    gem = get_one_gem_name
    gem_specs = Gem::SourceIndex.from_installed_gems.search(gem, options[:version])
    unless gem_specs.empty?
      require 'yaml'
      output = lambda { |spec| say spec.to_yaml; say "\n" }
      if options[:all]
        gem_specs.each(&output)
      else
        spec = gem_specs.sort_by { |spec| spec.version }.last
        output[spec]
      end
    else
      alert_error "Unknown gem #{gem}"
    end
  end
  
  if remote?
    say "(Remote 'info' operation is not yet implemented.)"
    # NOTE: when we do implement remote info, make sure we don't
    # duplicate huge swabs of local data.  If it's the same, just
    # say it's the same.
  end
end

#usage ⇒ Object 



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# File 'lib/rubygems/gem_commands.rb', line 1344

def usage
  "#{program_name} GEMFILE"
end