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"]
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
# File rubygems/request_set.rb, line 65 def initialize *deps @dependencies = deps @always_install = [] @dependency_names = {} @development = false @git_set = nil @ignore_dependencies = false @install_dir = Gem.dir @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.
# File rubygems/request_set.rb, line 87 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.
# File rubygems/request_set.rb, line 100 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.
# File rubygems/request_set.rb, line 111 def install options, &block # :yields: request, installer if dir = options[:install_dir] return install_into dir, false, options, &block end cache_dir = options[:cache_dir] || Gem.dir specs = [] 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? specs << inst.install end specs 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
.
# File rubygems/request_set.rb, line 149 def install_from_gemdeps options, &block gemdeps = options[:gemdeps] @install_dir = options[:install_dir] || Gem.dir load_gemdeps gemdeps, options[:without_groups] resolve if options[:explain] puts "Gems to install:" specs.map { |s| s.full_name }.sort.each do |s| puts " #{s}" end if Gem.configuration.really_verbose @resolver.stats.display end else installed = install options, &block lockfile = Gem::RequestSet::Lockfile.new self, gemdeps lockfile.write installed end end
# File rubygems/request_set.rb, line 178 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[:install_dir] = dir options[:only_install_dir] = true 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.
# File rubygems/request_set.rb, line 214 def load_gemdeps path, without_groups = [] @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.without_groups = without_groups if without_groups gf.load end
Resolve the requested dependencies and return an Array of Specification objects to be activated.
# File rubygems/request_set.rb, line 232 def resolve set = Gem::Resolver::BestSet.new @sets << set @sets << @git_set @sets << @vendor_set set = Gem::Resolver.compose_sets(*@sets) resolver = Gem::Resolver.new @dependencies, set resolver.development = @development resolver.ignore_dependencies = @ignore_dependencies resolver.soft_missing = @soft_missing @resolver = resolver @requests = resolver.resolve end
Resolve the requested dependencies against the gems available via Gem.path and return an Array of Specification objects to be activated.
# File rubygems/request_set.rb, line 253 def resolve_current resolve Gem::Resolver::CurrentSet.new end
# File rubygems/request_set.rb, line 257 def sorted_requests @sorted ||= strongly_connected_components.flatten end