JezK
Edit File: request_set.rb
# frozen_string_literal: true require 'tsort' ## # A RequestSet groups a request to activate a set of dependencies. # # nokogiri = Gem::Dependency.new 'nokogiri', '~> 1.6' # pg = Gem::Dependency.new 'pg', '~> 0.14' # # set = Gem::RequestSet.new nokogiri, pg # # requests = set.resolve # # p requests.map { |r| r.full_name } # #=> ["nokogiri-1.6.0", "mini_portile-0.5.1", "pg-0.17.0"] class Gem::RequestSet include TSort ## # Array of gems to install even if already installed attr_accessor :always_install attr_reader :dependencies attr_accessor :development ## # Errors fetching gems during resolution. attr_reader :errors ## # Set to true if you want to install only direct development dependencies. attr_accessor :development_shallow ## # The set of git gems imported via load_gemdeps. attr_reader :git_set # :nodoc: ## # When true, dependency resolution is not performed, only the requested gems # are installed. attr_accessor :ignore_dependencies attr_reader :install_dir # :nodoc: ## # If true, allow dependencies to match prerelease gems. attr_accessor :prerelease ## # When false no remote sets are used for resolving gems. attr_accessor :remote attr_reader :resolver # :nodoc: ## # Sets used for resolution attr_reader :sets # :nodoc: ## # Treat missing dependencies as silent errors attr_accessor :soft_missing ## # The set of vendor gems imported via load_gemdeps. attr_reader :vendor_set # :nodoc: ## # The set of source gems imported via load_gemdeps. attr_reader :source_set ## # Creates a RequestSet for a list of Gem::Dependency objects, +deps+. You # can then #resolve and #install the resolved list of dependencies. # # nokogiri = Gem::Dependency.new 'nokogiri', '~> 1.6' # pg = Gem::Dependency.new 'pg', '~> 0.14' # # set = Gem::RequestSet.new nokogiri, pg def initialize *deps @dependencies = deps @always_install = [] @conservative = false @dependency_names = {} @development = false @development_shallow = false @errors = [] @git_set = nil @ignore_dependencies = false @install_dir = Gem.dir @prerelease = false @remote = true @requests = [] @sets = [] @soft_missing = false @sorted = nil @specs = nil @vendor_set = nil @source_set = nil yield self if block_given? end ## # Declare that a gem of name +name+ with +reqs+ requirements is needed. def gem name, *reqs if dep = @dependency_names[name] then dep.requirement.concat reqs else dep = Gem::Dependency.new name, *reqs @dependency_names[name] = dep @dependencies << dep end end ## # Add +deps+ Gem::Dependency objects to the set. def import deps @dependencies.concat deps end ## # Installs gems for this RequestSet using the Gem::Installer +options+. # # If a +block+ is given an activation +request+ and +installer+ are yielded. # The +installer+ will be +nil+ if a gem matching the request was already # installed. def install options, &block # :yields: request, installer if dir = options[:install_dir] requests = install_into dir, false, options, &block return requests end @prerelease = options[:prerelease] requests = [] sorted_requests.each do |req| if req.installed? then req.spec.spec.build_extensions if @always_install.none? { |spec| spec == req.spec.spec } then yield req, nil if block_given? next end end spec = req.spec.install options do |installer| yield req, installer if block_given? end requests << spec end return requests if options[:gemdeps] specs = requests.map do |request| case request when Gem::Resolver::ActivationRequest then request.spec.spec else request end end require 'rubygems/dependency_installer' inst = Gem::DependencyInstaller.new options inst.installed_gems.replace specs Gem.done_installing_hooks.each do |hook| hook.call inst, specs end unless Gem.done_installing_hooks.empty? requests end ## # Installs from the gem dependencies files in the +:gemdeps+ option in # +options+, yielding to the +block+ as in #install. # # If +:without_groups+ is given in the +options+, those groups in the gem # dependencies file are not used. See Gem::Installer for other +options+. def install_from_gemdeps options, &block gemdeps = options[:gemdeps] @install_dir = options[:install_dir] || Gem.dir @prerelease = options[:prerelease] @remote = options[:domain] != :local @conservative = true if options[:conservative] gem_deps_api = load_gemdeps gemdeps, options[:without_groups], true resolve if options[:explain] puts "Gems to install:" sorted_requests.each do |spec| puts " #{spec.full_name}" end if Gem.configuration.really_verbose @resolver.stats.display end else installed = install options, &block if options.fetch :lock, true then lockfile = Gem::RequestSet::Lockfile.build self, gemdeps, gem_deps_api.dependencies lockfile.write end installed end end def install_into dir, force = true, options = {} gem_home, ENV['GEM_HOME'] = ENV['GEM_HOME'], dir existing = force ? [] : specs_in(dir) existing.delete_if { |s| @always_install.include? s } dir = File.expand_path dir installed = [] options[:development] = false options[:install_dir] = dir options[:only_install_dir] = true @prerelease = options[:prerelease] sorted_requests.each do |request| spec = request.spec if existing.find { |s| s.full_name == spec.full_name } then yield request, nil if block_given? next end spec.install options do |installer| yield request, installer if block_given? end installed << request end installed ensure ENV['GEM_HOME'] = gem_home end ## # Load a dependency management file. def load_gemdeps path, without_groups = [], installing = false @git_set = Gem::Resolver::GitSet.new @vendor_set = Gem::Resolver::VendorSet.new @source_set = Gem::Resolver::SourceSet.new @git_set.root_dir = @install_dir lock_file = "#{File.expand_path(path)}.lock".dup.untaint begin tokenizer = Gem::RequestSet::Lockfile::Tokenizer.from_file lock_file parser = tokenizer.make_parser self, [] parser.parse rescue Errno::ENOENT end gf = Gem::RequestSet::GemDependencyAPI.new self, path gf.installing = installing gf.without_groups = without_groups if without_groups gf.load end def pretty_print q # :nodoc: q.group 2, '[RequestSet:', ']' do q.breakable if @remote then q.text 'remote' q.breakable end if @prerelease then q.text 'prerelease' q.breakable end if @development_shallow then q.text 'shallow development' q.breakable elsif @development then q.text 'development' q.breakable end if @soft_missing then q.text 'soft missing' end q.group 2, '[dependencies:', ']' do q.breakable @dependencies.map do |dep| q.text dep.to_s q.breakable end end q.breakable q.text 'sets:' q.breakable q.pp @sets.map { |set| set.class } end end ## # Resolve the requested dependencies and return an Array of Specification # objects to be activated. def resolve set = Gem::Resolver::BestSet.new @sets << set @sets << @git_set @sets << @vendor_set @sets << @source_set set = Gem::Resolver.compose_sets(*@sets) set.remote = @remote set.prerelease = @prerelease resolver = Gem::Resolver.new @dependencies, set resolver.development = @development resolver.development_shallow = @development_shallow resolver.ignore_dependencies = @ignore_dependencies resolver.soft_missing = @soft_missing if @conservative installed_gems = {} Gem::Specification.find_all do |spec| (installed_gems[spec.name] ||= []) << spec end resolver.skip_gems = installed_gems end @resolver = resolver @requests = resolver.resolve @errors = set.errors @requests end ## # Resolve the requested dependencies against the gems available via Gem.path # and return an Array of Specification objects to be activated. def resolve_current resolve Gem::Resolver::CurrentSet.new end def sorted_requests @sorted ||= strongly_connected_components.flatten end def specs @specs ||= @requests.map { |r| r.full_spec } end def specs_in dir Dir["#{dir}/specifications/*.gemspec"].map do |g| Gem::Specification.load g end end def tsort_each_node &block # :nodoc: @requests.each(&block) end def tsort_each_child node # :nodoc: node.spec.dependencies.each do |dep| next if dep.type == :development and not @development match = @requests.find { |r| dep.match? r.spec.name, r.spec.version, @prerelease } unless match then next if dep.type == :development and @development_shallow next if @soft_missing raise Gem::DependencyError, "Unresolved dependency found during sorting - #{dep} (requested by #{node.spec.full_name})" end yield match end end end require 'rubygems/request_set/gem_dependency_api' require 'rubygems/request_set/lockfile' require 'rubygems/request_set/lockfile/tokenizer'