def activate(gem, autorequire, *version_requirements)
if version_requirements.empty? then
version_requirements = Gem::Requirement.default
end
unless gem.respond_to?(:name) && gem.respond_to?(:version_requirements)
gem = Gem::Dependency.new(gem, version_requirements)
end
matches = Gem.source_index.find_name(gem.name, gem.version_requirements)
report_activate_error(gem) if matches.empty?
if @loaded_specs[gem.name]
existing_spec = @loaded_specs[gem.name]
if ! matches.any? { |spec| spec.version == existing_spec.version }
fail Gem::Exception, "can't activate #{gem}, already activated #{existing_spec.full_name}]"
end
return false
end
spec = matches.last
if spec.loaded?
return false unless autorequire
result = spec.autorequire ? require(spec.autorequire) : false
return result || false
end
spec.loaded = true
@loaded_specs[spec.name] = spec
spec.dependencies.each do |dep_gem|
activate(dep_gem, autorequire)
end
spec.require_paths.unshift spec.bindir if spec.bindir
require_paths = spec.require_paths.map do |path|
File.join spec.full_gem_path, path
end
sitelibdir = ConfigMap[:sitelibdir]
$:.insert($:.index(sitelibdir), *require_paths)
if autorequire && spec.autorequire then
Array(spec.autorequire).each do |a_lib|
require a_lib
end
end
return true
end