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Diffstat (limited to 'jni/ruby/lib/rubygems/dependency_installer.rb')
| -rw-r--r-- | jni/ruby/lib/rubygems/dependency_installer.rb | 480 |
1 files changed, 480 insertions, 0 deletions
diff --git a/jni/ruby/lib/rubygems/dependency_installer.rb b/jni/ruby/lib/rubygems/dependency_installer.rb new file mode 100644 index 0000000..039d046 --- /dev/null +++ b/jni/ruby/lib/rubygems/dependency_installer.rb @@ -0,0 +1,480 @@ +require 'rubygems' +require 'rubygems/dependency_list' +require 'rubygems/package' +require 'rubygems/installer' +require 'rubygems/spec_fetcher' +require 'rubygems/user_interaction' +require 'rubygems/source' +require 'rubygems/available_set' + +## +# Installs a gem along with all its dependencies from local and remote gems. + +class Gem::DependencyInstaller + + include Gem::UserInteraction + + DEFAULT_OPTIONS = { # :nodoc: + :env_shebang => false, + :document => %w[ri], + :domain => :both, # HACK dup + :force => false, + :format_executable => false, # HACK dup + :ignore_dependencies => false, + :prerelease => false, + :security_policy => nil, # HACK NoSecurity requires OpenSSL. AlmostNo? Low? + :wrappers => true, + :build_args => nil, + :build_docs_in_background => false, + :install_as_default => false + }.freeze + + ## + # Documentation types. For use by the Gem.done_installing hook + + attr_reader :document + + ## + # Errors from SpecFetcher while searching for remote specifications + + attr_reader :errors + + ## + #-- + # TODO remove, no longer used + + attr_reader :gems_to_install # :nodoc: + + ## + # List of gems installed by #install in alphabetic order + + attr_reader :installed_gems + + ## + # Creates a new installer instance. + # + # Options are: + # :cache_dir:: Alternate repository path to store .gem files in. + # :domain:: :local, :remote, or :both. :local only searches gems in the + # current directory. :remote searches only gems in Gem::sources. + # :both searches both. + # :env_shebang:: See Gem::Installer::new. + # :force:: See Gem::Installer#install. + # :format_executable:: See Gem::Installer#initialize. + # :ignore_dependencies:: Don't install any dependencies. + # :install_dir:: See Gem::Installer#install. + # :prerelease:: Allow prerelease versions. See #install. + # :security_policy:: See Gem::Installer::new and Gem::Security. + # :user_install:: See Gem::Installer.new + # :wrappers:: See Gem::Installer::new + # :build_args:: See Gem::Installer::new + + def initialize options = {} + @only_install_dir = !!options[:install_dir] + @install_dir = options[:install_dir] || Gem.dir + @build_root = options[:build_root] + + options = DEFAULT_OPTIONS.merge options + + @bin_dir = options[:bin_dir] + @dev_shallow = options[:dev_shallow] + @development = options[:development] + @document = options[:document] + @domain = options[:domain] + @env_shebang = options[:env_shebang] + @force = options[:force] + @format_executable = options[:format_executable] + @ignore_dependencies = options[:ignore_dependencies] + @prerelease = options[:prerelease] + @security_policy = options[:security_policy] + @user_install = options[:user_install] + @wrappers = options[:wrappers] + @build_args = options[:build_args] + @build_docs_in_background = options[:build_docs_in_background] + @install_as_default = options[:install_as_default] + + # Indicates that we should not try to update any deps unless + # we absolutely must. + @minimal_deps = options[:minimal_deps] + + @available = nil + @installed_gems = [] + @toplevel_specs = nil + + @cache_dir = options[:cache_dir] || @install_dir + + @errors = [] + end + + ## + #-- + # TODO remove, no longer used + + def add_found_dependencies to_do, dependency_list # :nodoc: + seen = {} + dependencies = Hash.new { |h, name| h[name] = Gem::Dependency.new name } + + until to_do.empty? do + spec = to_do.shift + + # HACK why is spec nil? + next if spec.nil? or seen[spec.name] + seen[spec.name] = true + + deps = spec.runtime_dependencies + + if @development + if @dev_shallow + if @toplevel_specs.include? spec.full_name + deps |= spec.development_dependencies + end + else + deps |= spec.development_dependencies + end + end + + deps.each do |dep| + dependencies[dep.name] = dependencies[dep.name].merge dep + + if @minimal_deps + next if Gem::Specification.any? do |installed_spec| + dep.name == installed_spec.name and + dep.requirement.satisfied_by? installed_spec.version + end + end + + results = find_gems_with_sources(dep) + + results.sorted.each do |t| + to_do.push t.spec + end + + results.remove_installed! dep + + @available << results + results.inject_into_list dependency_list + end + end + + dependency_list.remove_specs_unsatisfied_by dependencies + end + + ## + # Creates an AvailableSet to install from based on +dep_or_name+ and + # +version+ + + def available_set_for dep_or_name, version # :nodoc: + if String === dep_or_name then + find_spec_by_name_and_version dep_or_name, version, @prerelease + else + dep = dep_or_name.dup + dep.prerelease = @prerelease + @available = find_gems_with_sources dep + end + + @available.pick_best! + end + + ## + # Indicated, based on the requested domain, if local + # gems should be considered. + + def consider_local? + @domain == :both or @domain == :local + end + + ## + # Indicated, based on the requested domain, if remote + # gems should be considered. + + def consider_remote? + @domain == :both or @domain == :remote + end + + ## + # Returns a list of pairs of gemspecs and source_uris that match + # Gem::Dependency +dep+ from both local (Dir.pwd) and remote (Gem.sources) + # sources. Gems are sorted with newer gems preferred over older gems, and + # local gems preferred over remote gems. + + def find_gems_with_sources dep, best_only=false # :nodoc: + set = Gem::AvailableSet.new + + if consider_local? + sl = Gem::Source::Local.new + + if spec = sl.find_gem(dep.name) + if dep.matches_spec? spec + set.add spec, sl + end + end + end + + if consider_remote? + begin + # TODO this is pulled from #spec_for_dependency to allow + # us to filter tuples before fetching specs. + # + tuples, errors = Gem::SpecFetcher.fetcher.search_for_dependency dep + + if best_only && !tuples.empty? + tuples.sort! { |a,b| b[0].version <=> a[0].version } + tuples = [tuples.first] + end + + specs = [] + tuples.each do |tup, source| + begin + spec = source.fetch_spec(tup) + rescue Gem::RemoteFetcher::FetchError => e + errors << Gem::SourceFetchProblem.new(source, e) + else + specs << [spec, source] + end + end + + if @errors + @errors += errors + else + @errors = errors + end + + set << specs + + rescue Gem::RemoteFetcher::FetchError => e + # FIX if there is a problem talking to the network, we either need to always tell + # the user (no really_verbose) or fail hard, not silently tell them that we just + # couldn't find their requested gem. + verbose do + "Error fetching remote data:\t\t#{e.message}\n" \ + "Falling back to local-only install" + end + @domain = :local + end + end + + set + end + + ## + # Finds a spec and the source_uri it came from for gem +gem_name+ and + # +version+. Returns an Array of specs and sources required for + # installation of the gem. + + def find_spec_by_name_and_version gem_name, + version = Gem::Requirement.default, + prerelease = false + set = Gem::AvailableSet.new + + if consider_local? + if gem_name =~ /\.gem$/ and File.file? gem_name then + src = Gem::Source::SpecificFile.new(gem_name) + set.add src.spec, src + elsif gem_name =~ /\.gem$/ then + Dir[gem_name].each do |name| + begin + src = Gem::Source::SpecificFile.new name + set.add src.spec, src + rescue Gem::Package::FormatError + end + end + else + local = Gem::Source::Local.new + + if s = local.find_gem(gem_name, version) + set.add s, local + end + end + end + + if set.empty? + dep = Gem::Dependency.new gem_name, version + dep.prerelease = true if prerelease + + set = find_gems_with_sources(dep, true) + set.match_platform! + end + + if set.empty? + raise Gem::SpecificGemNotFoundException.new(gem_name, version, @errors) + end + + @available = set + end + + ## + # Gathers all dependencies necessary for the installation from local and + # remote sources unless the ignore_dependencies was given. + #-- + # TODO remove at RubyGems 3 + + def gather_dependencies # :nodoc: + specs = @available.all_specs + + # these gems were listed by the user, always install them + keep_names = specs.map { |spec| spec.full_name } + + if @dev_shallow + @toplevel_specs = keep_names + end + + dependency_list = Gem::DependencyList.new @development + dependency_list.add(*specs) + to_do = specs.dup + add_found_dependencies to_do, dependency_list unless @ignore_dependencies + + # REFACTOR maybe abstract away using Gem::Specification.include? so + # that this isn't dependent only on the currently installed gems + dependency_list.specs.reject! { |spec| + not keep_names.include?(spec.full_name) and + Gem::Specification.include?(spec) + } + + unless dependency_list.ok? or @ignore_dependencies or @force then + reason = dependency_list.why_not_ok?.map { |k,v| + "#{k} requires #{v.join(", ")}" + }.join("; ") + raise Gem::DependencyError, "Unable to resolve dependencies: #{reason}" + end + + @gems_to_install = dependency_list.dependency_order.reverse + end + + def in_background what # :nodoc: + fork_happened = false + if @build_docs_in_background and Process.respond_to?(:fork) + begin + Process.fork do + yield + end + fork_happened = true + say "#{what} in a background process." + rescue NotImplementedError + end + end + yield unless fork_happened + end + + ## + # Installs the gem +dep_or_name+ and all its dependencies. Returns an Array + # of installed gem specifications. + # + # If the +:prerelease+ option is set and there is a prerelease for + # +dep_or_name+ the prerelease version will be installed. + # + # Unless explicitly specified as a prerelease dependency, prerelease gems + # that +dep_or_name+ depend on will not be installed. + # + # If c-1.a depends on b-1 and a-1.a and there is a gem b-1.a available then + # c-1.a, b-1 and a-1.a will be installed. b-1.a will need to be installed + # separately. + + def install dep_or_name, version = Gem::Requirement.default + request_set = resolve_dependencies dep_or_name, version + + @installed_gems = [] + + options = { + :bin_dir => @bin_dir, + :build_args => @build_args, + :document => @document, + :env_shebang => @env_shebang, + :force => @force, + :format_executable => @format_executable, + :ignore_dependencies => @ignore_dependencies, + :prerelease => @prerelease, + :security_policy => @security_policy, + :user_install => @user_install, + :wrappers => @wrappers, + :build_root => @build_root, + :install_as_default => @install_as_default + } + options[:install_dir] = @install_dir if @only_install_dir + + request_set.install options do |_, installer| + @installed_gems << installer.spec if installer + end + + @installed_gems.sort! + + # Since this is currently only called for docs, we can be lazy and just say + # it's documentation. Ideally the hook adder could decide whether to be in + # the background or not, and what to call it. + in_background "Installing documentation" do + Gem.done_installing_hooks.each do |hook| + hook.call self, @installed_gems + end + end unless Gem.done_installing_hooks.empty? + + @installed_gems + end + + def install_development_deps # :nodoc: + if @development and @dev_shallow then + :shallow + elsif @development then + :all + else + :none + end + end + + def resolve_dependencies dep_or_name, version # :nodoc: + request_set = Gem::RequestSet.new + request_set.development = @development + request_set.development_shallow = @dev_shallow + request_set.soft_missing = @force + request_set.prerelease = @prerelease + request_set.remote = false unless consider_remote? + + installer_set = Gem::Resolver::InstallerSet.new @domain + installer_set.ignore_installed = @only_install_dir + + if consider_local? + if dep_or_name =~ /\.gem$/ and File.file? dep_or_name then + src = Gem::Source::SpecificFile.new dep_or_name + installer_set.add_local dep_or_name, src.spec, src + version = src.spec.version if version == Gem::Requirement.default + elsif dep_or_name =~ /\.gem$/ then + Dir[dep_or_name].each do |name| + begin + src = Gem::Source::SpecificFile.new name + installer_set.add_local dep_or_name, src.spec, src + rescue Gem::Package::FormatError + end + end + # else This is a dependency. InstallerSet handles this case + end + end + + dependency = + if spec = installer_set.local?(dep_or_name) then + Gem::Dependency.new spec.name, version + elsif String === dep_or_name then + Gem::Dependency.new dep_or_name, version + else + dep_or_name + end + + dependency.prerelease = @prerelease + + request_set.import [dependency] + + installer_set.add_always_install dependency + + request_set.always_install = installer_set.always_install + + if @ignore_dependencies then + installer_set.ignore_dependencies = true + request_set.ignore_dependencies = true + request_set.soft_missing = true + end + + request_set.resolve installer_set + + @errors.concat request_set.errors + + request_set + end + +end |