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6e5f49770c
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@31081 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
73 lines
2.1 KiB
Ruby
73 lines
2.1 KiB
Ruby
######################################################################
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# This file is imported from the rubygems project.
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# DO NOT make modifications in this repo. They _will_ be reverted!
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# File a patch instead and assign it to Ryan Davis or Eric Hodel.
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######################################################################
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#--
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# Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
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# All rights reserved.
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# See LICENSE.txt for permissions.
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#++
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module Kernel
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if defined?(gem_original_require) then
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# Ruby ships with a custom_require, override its require
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remove_method :require
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else
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##
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# The Kernel#require from before RubyGems was loaded.
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alias gem_original_require require
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private :gem_original_require
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end
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##
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# When RubyGems is required, Kernel#require is replaced with our own which
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# is capable of loading gems on demand.
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#
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# When you call <tt>require 'x'</tt>, this is what happens:
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# * If the file can be loaded from the existing Ruby loadpath, it
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# is.
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# * Otherwise, installed gems are searched for a file that matches.
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# If it's found in gem 'y', that gem is activated (added to the
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# loadpath).
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#
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# The normal <tt>require</tt> functionality of returning false if
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# that file has already been loaded is preserved.
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def require path
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if Gem.unresolved_deps.empty? or Gem.loaded_path? path then
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gem_original_require path
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else
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spec = Gem.searcher.find_active path
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unless spec then
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found_specs = Gem.searcher.find_in_unresolved path
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unless found_specs.empty? then
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found_specs = [found_specs.last]
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else
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found_specs = Gem.searcher.find_in_unresolved_tree path
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end
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found_specs.each do |found_spec|
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# FIX: this is dumb, activate a spec instead of name/version
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Gem.activate found_spec.name, found_spec.version
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end
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end
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return gem_original_require path
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end
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rescue LoadError => load_error
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if load_error.message.end_with?(path) and Gem.try_activate(path) then
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return gem_original_require(path)
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end
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raise load_error
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end
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private :require
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end
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