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