зеркало из https://github.com/github/ruby.git
492 строки
14 KiB
Ruby
492 строки
14 KiB
Ruby
# frozen_string_literal: true
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require 'rubygems'
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require 'rubygems/dependency_list'
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require 'rubygems/package'
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require 'rubygems/installer'
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require 'rubygems/spec_fetcher'
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require 'rubygems/user_interaction'
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require 'rubygems/source'
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require 'rubygems/available_set'
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##
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# Installs a gem along with all its dependencies from local and remote gems.
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class Gem::DependencyInstaller
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include Gem::UserInteraction
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DEFAULT_OPTIONS = { # :nodoc:
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:env_shebang => false,
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:document => %w[ri],
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:domain => :both, # HACK dup
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:force => false,
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:format_executable => false, # HACK dup
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:ignore_dependencies => false,
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:prerelease => false,
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:security_policy => nil, # HACK NoSecurity requires OpenSSL. AlmostNo? Low?
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:wrappers => true,
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:build_args => nil,
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:build_docs_in_background => false,
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:install_as_default => false
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}.freeze
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##
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# Documentation types. For use by the Gem.done_installing hook
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attr_reader :document
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##
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# Errors from SpecFetcher while searching for remote specifications
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attr_reader :errors
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##
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#--
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# TODO remove, no longer used
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attr_reader :gems_to_install # :nodoc:
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##
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# List of gems installed by #install in alphabetic order
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attr_reader :installed_gems
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##
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# Creates a new installer instance.
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#
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# Options are:
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# :cache_dir:: Alternate repository path to store .gem files in.
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# :domain:: :local, :remote, or :both. :local only searches gems in the
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# current directory. :remote searches only gems in Gem::sources.
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# :both searches both.
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# :env_shebang:: See Gem::Installer::new.
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# :force:: See Gem::Installer#install.
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# :format_executable:: See Gem::Installer#initialize.
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# :ignore_dependencies:: Don't install any dependencies.
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# :install_dir:: See Gem::Installer#install.
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# :prerelease:: Allow prerelease versions. See #install.
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# :security_policy:: See Gem::Installer::new and Gem::Security.
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# :user_install:: See Gem::Installer.new
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# :wrappers:: See Gem::Installer::new
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# :build_args:: See Gem::Installer::new
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def initialize options = {}
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@only_install_dir = !!options[:install_dir]
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@install_dir = options[:install_dir] || Gem.dir
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@build_root = options[:build_root]
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options = DEFAULT_OPTIONS.merge options
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@bin_dir = options[:bin_dir]
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@dev_shallow = options[:dev_shallow]
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@development = options[:development]
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@document = options[:document]
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@domain = options[:domain]
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@env_shebang = options[:env_shebang]
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@force = options[:force]
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@format_executable = options[:format_executable]
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@ignore_dependencies = options[:ignore_dependencies]
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@prerelease = options[:prerelease]
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@security_policy = options[:security_policy]
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@user_install = options[:user_install]
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@wrappers = options[:wrappers]
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@build_args = options[:build_args]
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@build_docs_in_background = options[:build_docs_in_background]
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@install_as_default = options[:install_as_default]
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# Indicates that we should not try to update any deps unless
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# we absolutely must.
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@minimal_deps = options[:minimal_deps]
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@available = nil
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@installed_gems = []
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@toplevel_specs = nil
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@cache_dir = options[:cache_dir] || @install_dir
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@errors = []
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end
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##
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#--
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# TODO remove, no longer used
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def add_found_dependencies to_do, dependency_list # :nodoc:
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seen = {}
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dependencies = Hash.new { |h, name| h[name] = Gem::Dependency.new name }
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until to_do.empty? do
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spec = to_do.shift
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# HACK why is spec nil?
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next if spec.nil? or seen[spec.name]
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seen[spec.name] = true
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deps = spec.runtime_dependencies
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if @development
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if @dev_shallow
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if @toplevel_specs.include? spec.full_name
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deps |= spec.development_dependencies
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end
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else
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deps |= spec.development_dependencies
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end
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end
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deps.each do |dep|
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dependencies[dep.name] = dependencies[dep.name].merge dep
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if @minimal_deps
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next if Gem::Specification.any? do |installed_spec|
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dep.name == installed_spec.name and
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dep.requirement.satisfied_by? installed_spec.version
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end
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end
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results = find_gems_with_sources(dep)
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results.sorted.each do |t|
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to_do.push t.spec
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end
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results.remove_installed! dep
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@available << results
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results.inject_into_list dependency_list
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end
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end
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dependency_list.remove_specs_unsatisfied_by dependencies
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end
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##
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# Creates an AvailableSet to install from based on +dep_or_name+ and
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# +version+
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def available_set_for dep_or_name, version # :nodoc:
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if String === dep_or_name then
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find_spec_by_name_and_version dep_or_name, version, @prerelease
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else
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dep = dep_or_name.dup
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dep.prerelease = @prerelease
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@available = find_gems_with_sources dep
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end
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@available.pick_best!
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end
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##
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# Indicated, based on the requested domain, if local
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# gems should be considered.
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def consider_local?
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@domain == :both or @domain == :local
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end
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##
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# Indicated, based on the requested domain, if remote
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# gems should be considered.
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def consider_remote?
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@domain == :both or @domain == :remote
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end
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##
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# Returns a list of pairs of gemspecs and source_uris that match
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# Gem::Dependency +dep+ from both local (Dir.pwd) and remote (Gem.sources)
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# sources. Gems are sorted with newer gems preferred over older gems, and
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# local gems preferred over remote gems.
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def find_gems_with_sources dep, best_only=false # :nodoc:
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set = Gem::AvailableSet.new
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if consider_local?
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sl = Gem::Source::Local.new
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if spec = sl.find_gem(dep.name)
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if dep.matches_spec? spec
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set.add spec, sl
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end
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end
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end
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if consider_remote?
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begin
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# TODO this is pulled from #spec_for_dependency to allow
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# us to filter tuples before fetching specs.
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#
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tuples, errors = Gem::SpecFetcher.fetcher.search_for_dependency dep
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if best_only && !tuples.empty?
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tuples.sort! do |a,b|
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if b[0].version == a[0].version
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if b[0].platform != Gem::Platform::RUBY
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1
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else
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-1
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end
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else
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b[0].version <=> a[0].version
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end
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end
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tuples = [tuples.first]
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end
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specs = []
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tuples.each do |tup, source|
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begin
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spec = source.fetch_spec(tup)
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rescue Gem::RemoteFetcher::FetchError => e
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errors << Gem::SourceFetchProblem.new(source, e)
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else
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specs << [spec, source]
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end
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end
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if @errors
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@errors += errors
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else
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@errors = errors
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end
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set << specs
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rescue Gem::RemoteFetcher::FetchError => e
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# FIX if there is a problem talking to the network, we either need to always tell
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# the user (no really_verbose) or fail hard, not silently tell them that we just
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# couldn't find their requested gem.
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verbose do
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"Error fetching remote data:\t\t#{e.message}\n" \
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"Falling back to local-only install"
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end
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@domain = :local
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end
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end
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set
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end
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##
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# Finds a spec and the source_uri it came from for gem +gem_name+ and
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# +version+. Returns an Array of specs and sources required for
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# installation of the gem.
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def find_spec_by_name_and_version gem_name,
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version = Gem::Requirement.default,
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prerelease = false
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set = Gem::AvailableSet.new
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if consider_local?
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if gem_name =~ /\.gem$/ and File.file? gem_name then
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src = Gem::Source::SpecificFile.new(gem_name)
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set.add src.spec, src
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elsif gem_name =~ /\.gem$/ then
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Dir[gem_name].each do |name|
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begin
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src = Gem::Source::SpecificFile.new name
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set.add src.spec, src
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rescue Gem::Package::FormatError
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end
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end
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else
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local = Gem::Source::Local.new
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if s = local.find_gem(gem_name, version)
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set.add s, local
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end
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end
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end
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if set.empty?
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dep = Gem::Dependency.new gem_name, version
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dep.prerelease = true if prerelease
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set = find_gems_with_sources(dep, true)
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set.match_platform!
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end
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if set.empty?
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raise Gem::SpecificGemNotFoundException.new(gem_name, version, @errors)
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end
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@available = set
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end
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##
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# Gathers all dependencies necessary for the installation from local and
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# remote sources unless the ignore_dependencies was given.
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#--
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# TODO remove at RubyGems 3
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def gather_dependencies # :nodoc:
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specs = @available.all_specs
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# these gems were listed by the user, always install them
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keep_names = specs.map { |spec| spec.full_name }
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if @dev_shallow
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@toplevel_specs = keep_names
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end
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dependency_list = Gem::DependencyList.new @development
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dependency_list.add(*specs)
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to_do = specs.dup
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add_found_dependencies to_do, dependency_list unless @ignore_dependencies
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# REFACTOR maybe abstract away using Gem::Specification.include? so
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# that this isn't dependent only on the currently installed gems
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dependency_list.specs.reject! { |spec|
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not keep_names.include?(spec.full_name) and
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Gem::Specification.include?(spec)
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}
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unless dependency_list.ok? or @ignore_dependencies or @force then
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reason = dependency_list.why_not_ok?.map { |k,v|
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"#{k} requires #{v.join(", ")}"
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}.join("; ")
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raise Gem::DependencyError, "Unable to resolve dependencies: #{reason}"
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end
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@gems_to_install = dependency_list.dependency_order.reverse
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end
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def in_background what # :nodoc:
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fork_happened = false
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if @build_docs_in_background and Process.respond_to?(:fork)
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begin
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Process.fork do
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yield
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end
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fork_happened = true
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say "#{what} in a background process."
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rescue NotImplementedError
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end
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end
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yield unless fork_happened
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end
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##
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# Installs the gem +dep_or_name+ and all its dependencies. Returns an Array
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# of installed gem specifications.
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#
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# If the +:prerelease+ option is set and there is a prerelease for
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# +dep_or_name+ the prerelease version will be installed.
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#
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# Unless explicitly specified as a prerelease dependency, prerelease gems
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# that +dep_or_name+ depend on will not be installed.
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#
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# If c-1.a depends on b-1 and a-1.a and there is a gem b-1.a available then
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# c-1.a, b-1 and a-1.a will be installed. b-1.a will need to be installed
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# separately.
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def install dep_or_name, version = Gem::Requirement.default
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request_set = resolve_dependencies dep_or_name, version
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@installed_gems = []
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options = {
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:bin_dir => @bin_dir,
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:build_args => @build_args,
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:document => @document,
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:env_shebang => @env_shebang,
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:force => @force,
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:format_executable => @format_executable,
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:ignore_dependencies => @ignore_dependencies,
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:prerelease => @prerelease,
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:security_policy => @security_policy,
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:user_install => @user_install,
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:wrappers => @wrappers,
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:build_root => @build_root,
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:install_as_default => @install_as_default
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}
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options[:install_dir] = @install_dir if @only_install_dir
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request_set.install options do |_, installer|
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@installed_gems << installer.spec if installer
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end
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@installed_gems.sort!
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# Since this is currently only called for docs, we can be lazy and just say
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# it's documentation. Ideally the hook adder could decide whether to be in
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# the background or not, and what to call it.
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in_background "Installing documentation" do
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Gem.done_installing_hooks.each do |hook|
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hook.call self, @installed_gems
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end
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end unless Gem.done_installing_hooks.empty?
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@installed_gems
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end
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def install_development_deps # :nodoc:
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if @development and @dev_shallow then
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:shallow
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elsif @development then
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:all
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else
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:none
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end
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end
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def resolve_dependencies dep_or_name, version # :nodoc:
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request_set = Gem::RequestSet.new
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request_set.development = @development
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request_set.development_shallow = @dev_shallow
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request_set.soft_missing = @force
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request_set.prerelease = @prerelease
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request_set.remote = false unless consider_remote?
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installer_set = Gem::Resolver::InstallerSet.new @domain
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installer_set.ignore_installed = @only_install_dir
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if consider_local?
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if dep_or_name =~ /\.gem$/ and File.file? dep_or_name then
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src = Gem::Source::SpecificFile.new dep_or_name
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installer_set.add_local dep_or_name, src.spec, src
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version = src.spec.version if version == Gem::Requirement.default
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elsif dep_or_name =~ /\.gem$/ then
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Dir[dep_or_name].each do |name|
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begin
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src = Gem::Source::SpecificFile.new name
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installer_set.add_local dep_or_name, src.spec, src
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rescue Gem::Package::FormatError
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end
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end
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# else This is a dependency. InstallerSet handles this case
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end
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end
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dependency =
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if spec = installer_set.local?(dep_or_name) then
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Gem::Dependency.new spec.name, version
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elsif String === dep_or_name then
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Gem::Dependency.new dep_or_name, version
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else
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dep_or_name
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end
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dependency.prerelease = @prerelease
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request_set.import [dependency]
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installer_set.add_always_install dependency
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request_set.always_install = installer_set.always_install
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if @ignore_dependencies then
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installer_set.ignore_dependencies = true
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request_set.ignore_dependencies = true
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request_set.soft_missing = true
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end
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request_set.resolve installer_set
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@errors.concat request_set.errors
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request_set
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end
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end
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