Gem::Commands::SpecificationCommand

    # File lib/rubygems/commands/specification_command.rb, line 11
11:   def initialize
12:     Gem.load_yaml
13: 
14:     super 'specification', 'Display gem specification (in yaml)',
15:           :domain => :local, :version => Gem::Requirement.default,
16:           :format => :yaml
17: 
18:     add_version_option('examine')
19:     add_platform_option
20: 
21:     add_option('--all', 'Output specifications for all versions of',
22:                'the gem') do |value, options|
23:       options[:all] = true
24:     end
25: 
26:     add_option('--ruby', 'Output ruby format') do |value, options|
27:       options[:format] = :ruby
28:     end
29: 
30:     add_option('--yaml', 'Output RUBY format') do |value, options|
31:       options[:format] = :yaml
32:     end
33: 
34:     add_option('--marshal', 'Output Marshal format') do |value, options|
35:       options[:format] = :marshal
36:     end
37: 
38:     add_local_remote_options
39:   end

     # File lib/rubygems/commands/specification_command.rb, line 56
 56:   def execute
 57:     specs = []
 58:     gem = options[:args].shift
 59: 
 60:     unless gem then
 61:       raise Gem::CommandLineError,
 62:             "Please specify a gem name or file on the command line"
 63:     end
 64: 
 65:     dep = Gem::Dependency.new gem, options[:version]
 66: 
 67:     field = get_one_optional_argument
 68: 
 69:     raise Gem::CommandLineError, "--ruby and FIELD are mutually exclusive" if
 70:       field and options[:format] == :ruby
 71: 
 72:     if local? then
 73:       if File.exist? gem then
 74:         specs << Gem::Format.from_file_by_path(gem).spec rescue nil
 75:       end
 76: 
 77:       if specs.empty? then
 78:         specs.push(*dep.matching_specs)
 79:       end
 80:     end
 81: 
 82:     if remote? then
 83:       found = Gem::SpecFetcher.fetcher.fetch dep
 84: 
 85:       specs.push(*found.map { |spec,| spec })
 86:     end
 87: 
 88:     if specs.empty? then
 89:       alert_error "Unknown gem '#{gem}'"
 90:       terminate_interaction 1
 91:     end
 92: 
 93:     unless options[:all] then
 94:       specs = [specs.sort_by { |s| s.version }.last]
 95:     end
 96: 
 97:     specs.each do |s|
 98:       s = s.send field if field
 99: 
100:       say case options[:format]
101:           when :ruby then s.to_ruby
102:           when :marshal then Marshal.dump s
103:           else s.to_yaml
104:           end
105: 
106:       say "\n"
107:     end
108:   end