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