# File lib/rubygems/commands/check_command.rb, line 9
 9:   def initialize
10:     super 'check', 'Check installed gems',
11:           :verify => false, :alien => false
12: 
13:     add_option(      '--verify FILE',
14:                'Verify gem file against its internal',
15:                'checksum') do |value, options|
16:       options[:verify] = value
17:     end
18: 
19:     add_option('-a', '--alien', "Report 'unmanaged' or rogue files in the",
20:                "gem repository") do |value, options|
21:       options[:alien] = true
22:     end
23: 
24:     add_option('-v', '--verbose', "Spew more words") do |value, options|
25:       options[:verbose] = true
26:     end
27: 
28:     add_option('-t', '--test', "Run unit tests for gem") do |value, options|
29:       options[:test] = true
30:     end
31: 
32:     add_version_option 'run tests for'
33:   end

    # File lib/rubygems/commands/check_command.rb, line 35
35:   def execute
36:     if options[:test]
37:       version = options[:version] || Gem::Requirement.default
38:       dep = Gem::Dependency.new get_one_gem_name, version
39:       gem_spec = Gem::SourceIndex.from_installed_gems.search(dep).first
40:       Gem::Validator.new.unit_test(gem_spec)
41:     end
42: 
43:     if options[:alien]
44:       say "Performing the 'alien' operation"
45:       say
46:       gems = get_all_gem_names rescue []
47:       Gem::Validator.new.alien(gems).sort.each do |key, val|
48:         unless val.empty? then
49:           say "#{key} has #{val.size} problems"
50:           val.each do |error_entry|
51:             say "  #{error_entry.path}:"
52:             say "    #{error_entry.problem}"
53:           end
54:         else
55:           say "#{key} is error-free" if options[:verbose]
56:         end
57:         say
58:       end
59:     end
60: 
61:     if options[:verify]
62:       gem_name = options[:verify]
63:       unless gem_name
64:         alert_error "Must specify a .gem file with --verify NAME"
65:         return
66:       end
67:       unless File.exist?(gem_name)
68:         alert_error "Unknown file: #{gem_name}."
69:         return
70:       end
71:       say "Verifying gem: '#{gem_name}'"
72:       begin
73:         Gem::Validator.new.verify_gem_file(gem_name)
74:       rescue Exception => e
75:         alert_error "#{gem_name} is invalid."
76:       end
77:     end
78:   end