require 'yaml' require 'rubygems/command' require 'rubygems/local_remote_options' require 'rubygems/version_option' require 'rubygems/source_info_cache' require 'rubygems/format' class Gem::Commands::SpecificationCommand < Gem::Command include Gem::LocalRemoteOptions include Gem::VersionOption def initialize super 'specification', 'Display gem specification (in yaml)', :domain => :local, :version => Gem::Requirement.default add_version_option('examine') add_platform_option add_option('--all', 'Output specifications for all versions of', 'the gem') do |value, options| options[:all] = true end add_local_remote_options end def arguments # :nodoc: "GEMFILE name of gem to show the gemspec for" end def defaults_str # :nodoc: "--local --version '#{Gem::Requirement.default}'" end def usage # :nodoc: "#{program_name} [GEMFILE]" end def execute specs = [] gem = get_one_gem_name dep = Gem::Dependency.new gem, options[:version] if local? then if File.exist? gem then specs << Gem::Format.from_file_by_path(gem).spec rescue nil end if specs.empty? then specs.push(*Gem.source_index.search(dep)) end end if remote? then found = Gem::SpecFetcher.fetcher.fetch dep specs.push(*found.map { |spec,| spec }) end if specs.empty? then alert_error "Unknown gem '#{gem}'" terminate_interaction 1 end output = lambda { |s| say s.to_yaml; say "\n" } if options[:all] then specs.each(&output) else spec = specs.sort_by { |s| s.version }.last output[spec] end end end