diff options
Diffstat (limited to 'jni/ruby/lib/rubygems/request_set.rb')
| -rw-r--r-- | jni/ruby/lib/rubygems/request_set.rb | 413 |
1 files changed, 413 insertions, 0 deletions
diff --git a/jni/ruby/lib/rubygems/request_set.rb b/jni/ruby/lib/rubygems/request_set.rb new file mode 100644 index 0000000..05bfcbe --- /dev/null +++ b/jni/ruby/lib/rubygems/request_set.rb @@ -0,0 +1,413 @@ +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: + + ## + # 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 + + 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 + + cache_dir = options[:cache_dir] || Gem.dir + @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 + + path = req.download cache_dir + + inst = Gem::Installer.new path, options + + yield req, inst if block_given? + + requests << inst.install + end + + requests + ensure + raise if $! + 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? + 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.new 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 + + @git_set.root_dir = @install_dir + + lockfile = Gem::RequestSet::Lockfile.new self, path + lockfile.parse + + 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 + + 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' |