# File lib/rubygems/commands/query_command.rb, line 11
11:   def initialize(name = 'query',
12:                  summary = 'Query gem information in local or remote repositories')
13:     super name, summary,
14:          :name => //, :domain => :local, :details => false, :versions => true,
15:          :installed => false, :version => Gem::Requirement.default
16: 
17:     add_option('-i', '--[no-]installed',
18:                'Check for installed gem') do |value, options|
19:       options[:installed] = value
20:     end
21: 
22:     add_version_option
23: 
24:     add_option('-n', '--name-matches REGEXP',
25:                'Name of gem(s) to query on matches the',
26:                'provided REGEXP') do |value, options|
27:       options[:name] = /#{value}/i
28:     end
29: 
30:     add_option('-d', '--[no-]details',
31:                'Display detailed information of gem(s)') do |value, options|
32:       options[:details] = value
33:     end
34: 
35:     add_option(      '--[no-]versions',
36:                'Display only gem names') do |value, options|
37:       options[:versions] = value
38:       options[:details] = false unless value
39:     end
40: 
41:     add_option('-a', '--all',
42:                'Display all gem versions') do |value, options|
43:       options[:all] = value
44:     end
45: 
46:     add_local_remote_options
47:   end

    # File lib/rubygems/commands/query_command.rb, line 53
53:   def execute
54:     exit_code = 0
55: 
56:     name = options[:name]
57: 
58:     if options[:installed] then
59:       if name.source.empty? then
60:         alert_error "You must specify a gem name"
61:         exit_code |= 4
62:       elsif installed? name.source, options[:version] then
63:         say "true"
64:       else
65:         say "false"
66:         exit_code |= 1
67:       end
68: 
69:       raise Gem::SystemExitException, exit_code
70:     end
71: 
72:     if local? then
73:       say
74:       say "*** LOCAL GEMS ***"
75:       say
76: 
77:       output_query_results Gem.source_index.search(name)
78:     end
79: 
80:     if remote? then
81:       say
82:       say "*** REMOTE GEMS ***"
83:       say
84: 
85:       all = options[:all]
86: 
87:       begin
88:         Gem::SourceInfoCache.cache all
89:       rescue Gem::RemoteFetcher::FetchError
90:         # no network
91:       end
92: 
93:       output_query_results Gem::SourceInfoCache.search(name, false, all)
94:     end
95:   end