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require 'rubygems/command'
require 'rubygems/local_remote_options'
require 'rubygems/version_option'
require 'rubygems/source_info_cache'
class Gem::Commands::FetchCommand < Gem::Command
include Gem::LocalRemoteOptions
include Gem::VersionOption
def initialize
super 'fetch', 'Download a gem and place it in the current directory'
add_bulk_threshold_option
add_proxy_option
add_source_option
add_version_option
add_platform_option
end
def arguments # :nodoc:
'GEMNAME name of gem to download'
end
def defaults_str # :nodoc:
"--version '#{Gem::Requirement.default}'"
end
def usage # :nodoc:
"#{program_name} GEMNAME [GEMNAME ...]"
end
def execute
version = options[:version] || Gem::Requirement.default
gem_names = get_all_gem_names
gem_names.each do |gem_name|
dep = Gem::Dependency.new gem_name, version
specs_and_sources = Gem::SourceInfoCache.search_with_source dep, true
specs_and_sources.sort_by { |spec,| spec.version }
spec, source_uri = specs_and_sources.last
gem_file = "#{spec.full_name}.gem"
gem_path = File.join source_uri, 'gems', gem_file
gem = Gem::RemoteFetcher.fetcher.fetch_path gem_path
File.open gem_file, 'wb' do |fp|
fp.write gem
end
say "Downloaded #{gem_file}"
end
end
end
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