47 lines
1.2 KiB
Ruby
47 lines
1.2 KiB
Ruby
#--
|
|
# Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
|
|
# All rights reserved.
|
|
# See LICENSE.txt for permissions.
|
|
#++
|
|
|
|
require 'rubygems'
|
|
|
|
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) # :doc:
|
|
gem_original_require path
|
|
rescue LoadError => load_error
|
|
if load_error.message =~ /#{Regexp.escape path}\z/ and
|
|
spec = Gem.searcher.find(path) then
|
|
Gem.activate(spec.name, "= #{spec.version}")
|
|
gem_original_require path
|
|
else
|
|
raise load_error
|
|
end
|
|
end
|
|
|
|
private :require
|
|
private :gem_original_require
|
|
|
|
end
|
|
|