Extended maintenance of Ruby versions 1.8.7 and 1.9.2 will end on July 31, 2014. Read more

In Files

  • rubygems/commands/which_command.rb

Class/Module Index [+]

Quicksearch

Gem::Commands::WhichCommand

Constants

EXT

Public Class Methods

new() click to toggle source
 
               # File rubygems/commands/which_command.rb, line 8
def initialize
  super 'which', 'Find the location of a library file you can require',
        :search_gems_first => false, :show_all => false

  add_option '-a', '--[no-]all', 'show all matching files' do |show_all, options|
    options[:show_all] = show_all
  end

  add_option '-g', '--[no-]gems-first',
             'search gems before non-gems' do |gems_first, options|
    options[:search_gems_first] = gems_first
  end
end
            

Public Instance Methods

execute() click to toggle source
 
               # File rubygems/commands/which_command.rb, line 30
def execute
  searcher = Gem::GemPathSearcher.new

  found = false

  options[:args].each do |arg|
    dirs = $LOAD_PATH
    spec = searcher.find arg

    if spec then
      if options[:search_gems_first] then
        dirs = gem_paths(spec) + $LOAD_PATH
      else
        dirs = $LOAD_PATH + gem_paths(spec)
      end
    end

    paths = find_paths arg, dirs

    if paths.empty? then
      alert_error "Can't find ruby library file or shared library #{arg}"
    else
      say paths
      found = true
    end
  end

  terminate_interaction 1 unless found
end
            
find_paths(package_name, dirs) click to toggle source
 
               # File rubygems/commands/which_command.rb, line 60
def find_paths(package_name, dirs)
  result = []

  dirs.each do |dir|
    EXT.each do |ext|
      full_path = File.join dir, "#{package_name}#{ext}"
      if File.exist? full_path then
        result << full_path
        return result unless options[:show_all]
      end
    end
  end

  result
end
            
gem_paths(spec) click to toggle source
 
               # File rubygems/commands/which_command.rb, line 76
def gem_paths(spec)
  spec.require_paths.collect { |d| File.join spec.full_gem_path, d }
end
            

Commenting is here to help enhance the documentation. For example, code samples, or clarification of the documentation.

If you have questions about Ruby or the documentation, please post to one of the Ruby mailing lists. You will get better, faster, help that way.

If you wish to post a correction of the docs, please do so, but also file bug report so that it can be corrected for the next release. Thank you.

If you want to help improve the Ruby documentation, please visit Documenting-ruby.org.

blog comments powered by Disqus