# File lib/rubygems/format.rb, line 37 def self.from_file_by_path(file_path, security_policy = nil) format = nil unless File.exist?(file_path) raise Gem::Exception, "Cannot load gem at [#{file_path}] in #{Dir.pwd}" end # check for old version gem if File.read(file_path, 20).include?("MD5SUM =") require 'rubygems/old_format' format = Gem::OldFormat.from_file_by_path(file_path) else open file_path, Gem.binary_mode do |io| format = from_io io, file_path, security_policy end end return format end