def execute
version = options[:version] || Gem::Requirement.default
platform = Gem.platforms.last
gem_names = get_all_gem_names
gem_names.each do |gem_name|
dep = Gem::Dependency.new gem_name, version
dep.prerelease = options[:prerelease]
specs_and_sources, errors =
Gem::SpecFetcher.fetcher.spec_for_dependency dep
if platform
filtered = specs_and_sources.select {|s,| s.platform == platform }
specs_and_sources = filtered unless filtered.empty?
end
spec, source = specs_and_sources.max_by {|s,| s.version }
if spec.nil?
show_lookup_failure gem_name, version, errors, options[:domain]
next
end
source.download spec
say "Downloaded #{spec.full_name}"
end
end