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# frozen_string_literal: true ## # The global rubygems pool, available via the rubygems.org API. # Returns instances of APISpecification. class Gem::Resolver::APISet < Gem::Resolver::Set autoload :GemParser, File.expand_path("api_set/gem_parser", __dir__) ## # The URI for the dependency API this APISet uses. attr_reader :dep_uri # :nodoc: ## # The Gem::Source that gems are fetched from attr_reader :source ## # The corresponding place to fetch gems. attr_reader :uri ## # Creates a new APISet that will retrieve gems from +uri+ using the RubyGems # API URL +dep_uri+ which is described at # https://guides.rubygems.org/rubygems-org-api def initialize(dep_uri = 'https://index.rubygems.org/info/') super() dep_uri = URI dep_uri unless URI === dep_uri @dep_uri = dep_uri @uri = dep_uri + '..' @data = Hash.new {|h,k| h[k] = [] } @source = Gem::Source.new @uri @to_fetch = [] end ## # Return an array of APISpecification objects matching # DependencyRequest +req+. def find_all(req) res = [] return res unless @remote if @to_fetch.include?(req.name) prefetch_now end versions(req.name).each do |ver| if req.dependency.match? req.name, ver[:number], @prerelease res << Gem::Resolver::APISpecification.new(self, ver) end end res end ## # A hint run by the resolver to allow the Set to fetch # data for DependencyRequests +reqs+. def prefetch(reqs) return unless @remote names = reqs.map {|r| r.dependency.name } needed = names - @data.keys - @to_fetch @to_fetch += needed end def prefetch_now # :nodoc: needed, @to_fetch = @to_fetch, [] needed.sort.each do |name| versions(name) end end def pretty_print(q) # :nodoc: q.group 2, '[APISet', ']' do q.breakable q.text "URI: #{@dep_uri}" q.breakable q.text 'gem names:' q.pp @data.keys end end ## # Return data for all versions of the gem +name+. def versions(name) # :nodoc: if @data.key?(name) return @data[name] end uri = @dep_uri + name str = Gem::RemoteFetcher.fetcher.fetch_path uri lines(str).each do |ver| number, platform, dependencies, requirements = parse_gem(ver) platform ||= "ruby" dependencies = dependencies.map {|dep_name, reqs| [dep_name, reqs.join(", ")] } requirements = requirements.map {|req_name, reqs| [req_name.to_sym, reqs] }.to_h @data[name] << { name: name, number: number, platform: platform, dependencies: dependencies, requirements: requirements } end @data[name] end private def lines(str) lines = str.split("\n") header = lines.index("---") header ? lines[header + 1..-1] : lines end def parse_gem(string) @gem_parser ||= GemParser.new @gem_parser.parse(string) end end
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