Class: Gem::ContentsCommand

Inherits:
Command
  • Object
show all
Includes:
CommandAids, VersionOption
Defined in:
lib/rubygems/gem_commands.rb

Instance Attribute Summary

Attributes inherited from Command

#command, #defaults, #options, #program_name, #summary

Instance Method Summary collapse

Methods included from VersionOption

#add_version_option

Methods included from CommandAids

#begins?, #get_all_gem_names, #get_one_gem_name, #get_one_optional_argument

Methods inherited from Command

add_common_option, #add_option, add_specific_extra_args, #arguments, common_options, #defaults_str, extra_args, extra_args=, #handles?, #invoke, #merge_options, #remove_option, #show_help, specific_extra_args, specific_extra_args_hash, #usage, #when_invoked

Methods included from DefaultUserInteraction

#ui, ui, #ui=, ui=, #use_ui, use_ui

Constructor Details

#initialize ⇒ ContentsCommand

Returns a new instance of ContentsCommand.



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# File 'lib/rubygems/gem_commands.rb', line 1536

def initialize
  super(
    'contents',
    'Display the contents of the installed gems',
    { :list => true, :specdirs => [] })

  add_version_option('contents')

  add_option("-l","--list",'List the files inside a Gem') do |v,o|
    o[:list] = true
  end
  
  add_option('-s','--spec-dir a,b,c', Array, "Search for gems under specific paths") do |v,o|
    o[:specdirs] = v
  end
  
  add_option('-V','--verbose','Be verbose when showing status') do |v,o|
    o[:verbose] = v
  end
end

Instance Method Details

#execute(io = STDOUT) ⇒ Object 



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# File 'lib/rubygems/gem_commands.rb', line 1557

def execute(io=STDOUT)
  if options[:list]
    version = options[:version] || "> 0.0.0"
    gem = get_one_gem_name
    
    s = options[:specdirs].map do |i|
      [i, File.join(i,"specifications")]
    end.flatten
    
    if s.empty?
      s = Gem::SourceIndex.installed_spec_directories
      path_kind = "default gem paths"
      system = true
    else
      path_kind = "specified path"
      system = false
    end

    si = Gem::SourceIndex.from_gems_in(*s)

    gem_spec = si.search(gem, version).last
    unless gem_spec
      io.puts "Unable to find gem '#{gem}' in #{path_kind}"
      if options[:verbose]
        io.puts "\nDirectories searched:"
        s.each do |p|
          io.puts p
        end
      end
      return
    end
    # show the list of files.
    gem_spec.files.each do |f|
      io.puts File.join(gem_spec.full_gem_path, f)
    end
  end
end