JezK
Edit File: which_command.rb
require 'rubygems/command' class Gem::Commands::WhichCommand < Gem::Command 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 def arguments # :nodoc: "FILE name of file to find" end def defaults_str # :nodoc: "--no-gems-first --no-all" end def execute found = false options[:args].each do |arg| arg = arg.sub(/#{Regexp.union(*Gem.suffixes)}$/, '') dirs = $LOAD_PATH spec = Gem::Specification.find_by_path 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 # TODO: this is totally redundant and stupid 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 def find_paths(package_name, dirs) result = [] dirs.each do |dir| Gem.suffixes.each do |ext| full_path = File.join dir, "#{package_name}#{ext}" if File.exist? full_path and not File.directory? full_path then result << full_path return result unless options[:show_all] end end end result end def gem_paths(spec) spec.require_paths.collect { |d| File.join spec.full_gem_path, d } end def usage # :nodoc: "#{program_name} FILE [FILE ...]" end end