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Edit File : rubygems.rb \| Size : 36.87 KB
# frozen_string_literal: true #-- # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others. # All rights reserved. # See LICENSE.txt for permissions. #++ require 'rbconfig' module Gem VERSION = "3.2.33".freeze end # Must be first since it unloads the prelude from 1.9.2 require_relative 'rubygems/compatibility' require_relative 'rubygems/defaults' require_relative 'rubygems/deprecate' require_relative 'rubygems/errors' ## # RubyGems is the Ruby standard for publishing and managing third party # libraries. # # For user documentation, see: # # * <tt>gem help</tt> and <tt>gem help [command]</tt> # * {RubyGems User Guide}[https://guides.rubygems.org/] # * {Frequently Asked Questions}[https://guides.rubygems.org/faqs] # # For gem developer documentation see: # # * {Creating Gems}[https://guides.rubygems.org/make-your-own-gem] # * Gem::Specification # * Gem::Version for version dependency notes # # Further RubyGems documentation can be found at: # # * {RubyGems Guides}[https://guides.rubygems.org] # * {RubyGems API}[https://www.rubydoc.info/github/rubygems/rubygems] (also available from # <tt>gem server</tt>) # # == RubyGems Plugins # # RubyGems will load plugins in the latest version of each installed gem or # $LOAD_PATH. Plugins must be named 'rubygems_plugin' (.rb, .so, etc) and # placed at the root of your gem's #require_path. Plugins are installed at a # special location and loaded on boot. # # For an example plugin, see the {Graph gem}[https://github.com/seattlerb/graph] # which adds a `gem graph` command. # # == RubyGems Defaults, Packaging # # RubyGems defaults are stored in lib/rubygems/defaults.rb. If you're packaging # RubyGems or implementing Ruby you can change RubyGems' defaults. # # For RubyGems packagers, provide lib/rubygems/defaults/operating_system.rb # and override any defaults from lib/rubygems/defaults.rb. # # For Ruby implementers, provide lib/rubygems/defaults/#{RUBY_ENGINE}.rb and # override any defaults from lib/rubygems/defaults.rb. # # If you need RubyGems to perform extra work on install or uninstall, your # defaults override file can set pre/post install and uninstall hooks. # See Gem::pre_install, Gem::pre_uninstall, Gem::post_install, # Gem::post_uninstall. # # == Bugs # # You can submit bugs to the # {RubyGems bug tracker}[https://github.com/rubygems/rubygems/issues] # on GitHub # # == Credits # # RubyGems is currently maintained by Eric Hodel. # # RubyGems was originally developed at RubyConf 2003 by: # # * Rich Kilmer -- rich(at)infoether.com # * Chad Fowler -- chad(at)chadfowler.com # * David Black -- dblack(at)wobblini.net # * Paul Brannan -- paul(at)atdesk.com # * Jim Weirich -- jim(at)weirichhouse.org # # Contributors: # # * Gavin Sinclair -- gsinclair(at)soyabean.com.au # * George Marrows -- george.marrows(at)ntlworld.com # * Dick Davies -- rasputnik(at)hellooperator.net # * Mauricio Fernandez -- batsman.geo(at)yahoo.com # * Simon Strandgaard -- neoneye(at)adslhome.dk # * Dave Glasser -- glasser(at)mit.edu # * Paul Duncan -- pabs(at)pablotron.org # * Ville Aine -- vaine(at)cs.helsinki.fi # * Eric Hodel -- drbrain(at)segment7.net # * Daniel Berger -- djberg96(at)gmail.com # * Phil Hagelberg -- technomancy(at)gmail.com # * Ryan Davis -- ryand-ruby(at)zenspider.com # * Evan Phoenix -- evan(at)fallingsnow.net # * Steve Klabnik -- steve(at)steveklabnik.com # # (If your name is missing, PLEASE let us know!) # # == License # # See {LICENSE.txt}[rdoc-ref:lib/rubygems/LICENSE.txt] for permissions. # # Thanks! # # -The RubyGems Team module Gem RUBYGEMS_DIR = File.dirname File.expand_path(__FILE__) # Taint support is deprecated in Ruby 2.7. # This allows switching ".untaint" to ".tap(&Gem::UNTAINT)", # to avoid deprecation warnings in Ruby 2.7. UNTAINT = RUBY_VERSION < '2.7' ? :untaint.to_sym : proc{} # When https://bugs.ruby-lang.org/issues/17259 is available, there is no need to override Kernel#warn KERNEL_WARN_IGNORES_INTERNAL_ENTRIES = RUBY_ENGINE == "truffleruby" \|\| (RUBY_ENGINE == "ruby" && RUBY_VERSION >= '3.0') ## # An Array of Regexps that match windows Ruby platforms. WIN_PATTERNS = [ /bccwin/i, /cygwin/i, /djgpp/i, /mingw/i, /mswin/i, /wince/i, ].freeze GEM_DEP_FILES = %w[ gem.deps.rb gems.rb Gemfile Isolate ].freeze ## # Subdirectories in a gem repository REPOSITORY_SUBDIRECTORIES = %w[ build_info cache doc extensions gems plugins specifications ].freeze ## # Subdirectories in a gem repository for default gems REPOSITORY_DEFAULT_GEM_SUBDIRECTORIES = %w[ gems specifications/default ].freeze ## # Exception classes used in a Gem.read_binary +rescue+ statement READ_BINARY_ERRORS = [Errno::EACCES, Errno::EROFS, Errno::ENOSYS, Errno::ENOTSUP].freeze ## # Exception classes used in Gem.write_binary +rescue+ statement WRITE_BINARY_ERRORS = [Errno::ENOSYS, Errno::ENOTSUP].freeze @@win_platform = nil @configuration = nil @gemdeps = nil @loaded_specs = {} LOADED_SPECS_MUTEX = Thread::Mutex.new @path_to_default_spec_map = {} @platforms = [] @ruby = nil @ruby_api_version = nil @sources = nil @post_build_hooks \|\|= [] @post_install_hooks \|\|= [] @post_uninstall_hooks \|\|= [] @pre_uninstall_hooks \|\|= [] @pre_install_hooks \|\|= [] @pre_reset_hooks \|\|= [] @post_reset_hooks \|\|= [] @default_source_date_epoch = nil ## # Try to activate a gem containing +path+. Returns true if # activation succeeded or wasn't needed because it was already # activated. Returns false if it can't find the path in a gem. def self.try_activate(path) # finds the _latest_ version... regardless of loaded specs and their deps # if another gem had a requirement that would mean we shouldn't # activate the latest version, then either it would already be activated # or if it was ambiguous (and thus unresolved) the code in our custom # require will try to activate the more specific version. spec = Gem::Specification.find_by_path path return false unless spec return true if spec.activated? begin spec.activate rescue Gem::LoadError => e # this could fail due to gem dep collisions, go lax spec_by_name = Gem::Specification.find_by_name(spec.name) if spec_by_name.nil? raise e else spec_by_name.activate end end return true end def self.needs rs = Gem::RequestSet.new yield rs finish_resolve rs end def self.finish_resolve(request_set=Gem::RequestSet.new) request_set.import Gem::Specification.unresolved_deps.values request_set.import Gem.loaded_specs.values.map {\|s\| Gem::Dependency.new(s.name, s.version) } request_set.resolve_current.each do \|s\| s.full_spec.activate end end ## # Find the full path to the executable for gem +name+. If the +exec_name+ # is not given, an exception will be raised, otherwise the # specified executable's path is returned. +requirements+ allows # you to specify specific gem versions. def self.bin_path(name, exec_name = nil, requirements) requirements = Gem::Requirement.default if requirements.empty? find_spec_for_exe(name, exec_name, requirements).bin_file exec_name end def self.find_spec_for_exe(name, exec_name, requirements) raise ArgumentError, "you must supply exec_name" unless exec_name dep = Gem::Dependency.new name, requirements loaded = Gem.loaded_specs[name] return loaded if loaded && dep.matches_spec?(loaded) specs = dep.matching_specs(true) specs = specs.find_all do \|spec\| spec.executables.include? exec_name end if exec_name unless spec = specs.first msg = "can't find gem #{dep} with executable #{exec_name}" if dep.filters_bundler? && bundler_message = Gem::BundlerVersionFinder.missing_version_message msg = bundler_message end raise Gem::GemNotFoundException, msg end spec end private_class_method :find_spec_for_exe ## # Find the full path to the executable for gem +name+. If the +exec_name+ # is not given, an exception will be raised, otherwise the # specified executable's path is returned. +requirements+ allows # you to specify specific gem versions. # # A side effect of this method is that it will activate the gem that # contains the executable. # # This method should only* be used in bin stub files. def self.activate_bin_path(name, exec_name = nil, requirements) # :nodoc: spec = find_spec_for_exe name, exec_name, requirements Gem::LOADED_SPECS_MUTEX.synchronize do spec.activate finish_resolve end spec.bin_file exec_name end ## # The mode needed to read a file as straight binary. def self.binary_mode 'rb' end ## # The path where gem executables are to be installed. def self.bindir(install_dir=Gem.dir) return File.join install_dir, 'bin' unless install_dir.to_s == Gem.default_dir.to_s Gem.default_bindir end ## # The path were rubygems plugins are to be installed. def self.plugindir(install_dir=Gem.dir) File.join install_dir, 'plugins' end ## # Reset the +dir+ and +path+ values. The next time +dir+ or +path+ # is requested, the values will be calculated from scratch. This is # mainly used by the unit tests to provide test isolation. def self.clear_paths @paths = nil @user_home = nil Gem::Specification.reset Gem::Security.reset if defined?(Gem::Security) end ## # The standard configuration object for gems. def self.configuration @configuration \|\|= Gem::ConfigFile.new [] end ## # Use the given configuration object (which implements the ConfigFile # protocol) as the standard configuration object. def self.configuration=(config) @configuration = config end ## # The path to the data directory specified by the gem name. If the # package is not available as a gem, return nil. def self.datadir(gem_name) spec = @loaded_specs[gem_name] return nil if spec.nil? spec.datadir end ## # A Zlib::Deflate.deflate wrapper def self.deflate(data) require 'zlib' Zlib::Deflate.deflate data end # Retrieve the PathSupport object that RubyGems uses to # lookup files. def self.paths @paths \|\|= Gem::PathSupport.new(ENV) end # Initialize the filesystem paths to use from +env+. # +env+ is a hash-like object (typically ENV) that # is queried for 'GEM_HOME', 'GEM_PATH', and 'GEM_SPEC_CACHE' # Keys for the +env+ hash should be Strings, and values of the hash should # be Strings or +nil+. def self.paths=(env) clear_paths target = {} env.each_pair do \|k,v\| case k when 'GEM_HOME', 'GEM_PATH', 'GEM_SPEC_CACHE' case v when nil, String target[k] = v when Array unless Gem::Deprecate.skip warn <<-EOWARN Array values in the parameter to `Gem.paths=` are deprecated. Please use a String or nil. An Array (#{env.inspect}) was passed in from #{caller[3]} EOWARN end target[k] = v.join File::PATH_SEPARATOR end else target[k] = v end end @paths = Gem::PathSupport.new ENV.to_hash.merge(target) Gem::Specification.dirs = @paths.path end ## # The path where gems are to be installed. def self.dir paths.home end def self.path paths.path end def self.spec_cache_dir paths.spec_cache_dir end ## # Quietly ensure the Gem directory +dir+ contains all the proper # subdirectories. If we can't create a directory due to a permission # problem, then we will silently continue. # # If +mode+ is given, missing directories are created with this mode. # # World-writable directories will never be created. def self.ensure_gem_subdirectories(dir = Gem.dir, mode = nil) ensure_subdirectories(dir, mode, REPOSITORY_SUBDIRECTORIES) end ## # Quietly ensure the Gem directory +dir+ contains all the proper # subdirectories for handling default gems. If we can't create a # directory due to a permission problem, then we will silently continue. # # If +mode+ is given, missing directories are created with this mode. # # World-writable directories will never be created. def self.ensure_default_gem_subdirectories(dir = Gem.dir, mode = nil) ensure_subdirectories(dir, mode, REPOSITORY_DEFAULT_GEM_SUBDIRECTORIES) end def self.ensure_subdirectories(dir, mode, subdirs) # :nodoc: old_umask = File.umask File.umask old_umask \| 002 require 'fileutils' options = {} options[:mode] = mode if mode subdirs.each do \|name\| subdir = File.join dir, name next if File.exist? subdir begin FileUtils.mkdir_p subdir, options rescue SystemCallError end end ensure File.umask old_umask end ## # The extension API version of ruby. This includes the static vs non-static # distinction as extensions cannot be shared between the two. def self.extension_api_version # :nodoc: if 'no' == RbConfig::CONFIG['ENABLE_SHARED'] "#{ruby_api_version}-static" else ruby_api_version end end ## # Returns a list of paths matching +glob+ that can be used by a gem to pick # up features from other gems. For example: # # Gem.find_files('rdoc/discover').each do \|path\| load path end # # if +check_load_path+ is true (the default), then find_files also searches # $LOAD_PATH for files as well as gems. # # Note that find_files will return all files even if they are from different # versions of the same gem. See also find_latest_files def self.find_files(glob, check_load_path=true) files = [] files = find_files_from_load_path glob if check_load_path gem_specifications = @gemdeps ? Gem.loaded_specs.values : Gem::Specification.stubs files.concat gem_specifications.map {\|spec\| spec.matches_for_glob("#{glob}#{Gem.suffix_pattern}") }.flatten # $LOAD_PATH might contain duplicate entries or reference # the spec dirs directly, so we prune. files.uniq! if check_load_path return files end def self.find_files_from_load_path(glob) # :nodoc: glob_with_suffixes = "#{glob}#{Gem.suffix_pattern}" $LOAD_PATH.map do \|load_path\| Gem::Util.glob_files_in_dir(glob_with_suffixes, load_path) end.flatten.select {\|file\| File.file? file.tap(&Gem::UNTAINT) } end ## # Returns a list of paths matching +glob+ from the latest gems that can be # used by a gem to pick up features from other gems. For example: # # Gem.find_latest_files('rdoc/discover').each do \|path\| load path end # # if +check_load_path+ is true (the default), then find_latest_files also # searches $LOAD_PATH for files as well as gems. # # Unlike find_files, find_latest_files will return only files from the # latest version of a gem. def self.find_latest_files(glob, check_load_path=true) files = [] files = find_files_from_load_path glob if check_load_path files.concat Gem::Specification.latest_specs(true).map {\|spec\| spec.matches_for_glob("#{glob}#{Gem.suffix_pattern}") }.flatten # $LOAD_PATH might contain duplicate entries or reference # the spec dirs directly, so we prune. files.uniq! if check_load_path return files end ## # Top level install helper method. Allows you to install gems interactively: # # % irb # >> Gem.install "minitest" # Fetching: minitest-5.14.0.gem (100%) # => [#<Gem::Specification:0x1013b4528 @name="minitest", ...>] def self.install(name, version = Gem::Requirement.default, options) require_relative "rubygems/dependency_installer" inst = Gem::DependencyInstaller.new(options) inst.install name, version inst.installed_gems end ## # Get the default RubyGems API host. This is normally # <tt>https://rubygems.org</tt>. def self.host @host \|\|= Gem::DEFAULT_HOST end ## Set the default RubyGems API host. def self.host=(host) @host = host end ## # The index to insert activated gem paths into the $LOAD_PATH. The activated # gem's paths are inserted before site lib directory by default. def self.load_path_insert_index $LOAD_PATH.each_with_index do \|path, i\| return i if path.instance_variable_defined?(:@gem_prelude_index) end index = $LOAD_PATH.index RbConfig::CONFIG['sitelibdir'] index \|\| 0 end ## # The number of paths in the `$LOAD_PATH` from activated gems. Used to # prioritize `-I` and `ENV['RUBYLIB`]` entries during `require`. def self.activated_gem_paths @activated_gem_paths \|\|= 0 end ## # Add a list of paths to the $LOAD_PATH at the proper place. def self.add_to_load_path(paths) @activated_gem_paths = activated_gem_paths + paths.size # gem directories must come after -I and ENV['RUBYLIB'] $LOAD_PATH.insert(Gem.load_path_insert_index, paths) end @yaml_loaded = false ## # Loads YAML, preferring Psych def self.load_yaml return if @yaml_loaded begin # Try requiring the gem version or* stdlib version of psych. require 'psych' rescue ::LoadError # If we can't load psych, that's fine, go on. else require_relative 'rubygems/psych_additions' require_relative 'rubygems/psych_tree' end require 'yaml' require_relative 'rubygems/safe_yaml' @yaml_loaded = true end ## # The file name and line number of the caller of the caller of this method. # # +depth+ is how many layers up the call stack it should go. # # e.g., # # def a; Gem.location_of_caller; end # a #=> ["x.rb", 2] # (it'll vary depending on file name and line number) # # def b; c; end # def c; Gem.location_of_caller(2); end # b #=> ["x.rb", 6] # (it'll vary depending on file name and line number) def self.location_of_caller(depth = 1) caller[depth] =~ /(.?):(\d+).?$/i file = $1 lineno = $2.to_i [file, lineno] end ## # The version of the Marshal format for your Ruby. def self.marshal_version "#{Marshal::MAJOR_VERSION}.#{Marshal::MINOR_VERSION}" end ## # Set array of platforms this RubyGems supports (primarily for testing). def self.platforms=(platforms) @platforms = platforms end ## # Array of platforms this RubyGems supports. def self.platforms @platforms \|\|= [] if @platforms.empty? @platforms = [Gem::Platform::RUBY, Gem::Platform.local] end @platforms end ## # Adds a post-build hook that will be passed an Gem::Installer instance # when Gem::Installer#install is called. The hook is called after the gem # has been extracted and extensions have been built but before the # executables or gemspec has been written. If the hook returns +false+ then # the gem's files will be removed and the install will be aborted. def self.post_build(&hook) @post_build_hooks << hook end ## # Adds a post-install hook that will be passed an Gem::Installer instance # when Gem::Installer#install is called def self.post_install(&hook) @post_install_hooks << hook end ## # Adds a post-installs hook that will be passed a Gem::DependencyInstaller # and a list of installed specifications when # Gem::DependencyInstaller#install is complete def self.done_installing(&hook) @done_installing_hooks << hook end ## # Adds a hook that will get run after Gem::Specification.reset is # run. def self.post_reset(&hook) @post_reset_hooks << hook end ## # Adds a post-uninstall hook that will be passed a Gem::Uninstaller instance # and the spec that was uninstalled when Gem::Uninstaller#uninstall is # called def self.post_uninstall(&hook) @post_uninstall_hooks << hook end ## # Adds a pre-install hook that will be passed an Gem::Installer instance # when Gem::Installer#install is called. If the hook returns +false+ then # the install will be aborted. def self.pre_install(&hook) @pre_install_hooks << hook end ## # Adds a hook that will get run before Gem::Specification.reset is # run. def self.pre_reset(&hook) @pre_reset_hooks << hook end ## # Adds a pre-uninstall hook that will be passed an Gem::Uninstaller instance # and the spec that will be uninstalled when Gem::Uninstaller#uninstall is # called def self.pre_uninstall(&hook) @pre_uninstall_hooks << hook end ## # The directory prefix this RubyGems was installed at. If your # prefix is in a standard location (ie, rubygems is installed where # you'd expect it to be), then prefix returns nil. def self.prefix prefix = File.dirname RUBYGEMS_DIR if prefix != File.expand_path(RbConfig::CONFIG['sitelibdir']) and prefix != File.expand_path(RbConfig::CONFIG['libdir']) and 'lib' == File.basename(RUBYGEMS_DIR) prefix end end ## # Refresh available gems from disk. def self.refresh Gem::Specification.reset end ## # Safely read a file in binary mode on all platforms. def self.read_binary(path) File.open path, 'rb+' do \|f\| f.flock(File::LOCK_EX) f.read end rescue READ_BINARY_ERRORS File.open path, 'rb' do \|f\| f.read end rescue Errno::ENOLCK # NFS if Thread.main != Thread.current raise else File.open path, 'rb' do \|f\| f.read end end end ## # Safely write a file in binary mode on all platforms. def self.write_binary(path, data) File.open(path, File::RDWR \| File::CREAT \| File::BINARY \| File::LOCK_EX) do \|io\| io.write data end rescue WRITE_BINARY_ERRORS File.open(path, 'wb') do \|io\| io.write data end rescue Errno::ENOLCK # NFS if Thread.main != Thread.current raise else File.open(path, 'wb') do \|io\| io.write data end end end ## # The path to the running Ruby interpreter. def self.ruby if @ruby.nil? @ruby = RbConfig.ruby @ruby = "\"#{@ruby}\"" if @ruby =~ /\s/ end @ruby end ## # Returns a String containing the API compatibility version of Ruby def self.ruby_api_version @ruby_api_version \|\|= RbConfig::CONFIG['ruby_version'].dup end def self.env_requirement(gem_name) @env_requirements_by_name \|\|= {} @env_requirements_by_name[gem_name] \|\|= begin req = ENV["GEM_REQUIREMENT_#{gem_name.upcase}"] \|\| '>= 0'.freeze Gem::Requirement.create(req) end end post_reset { @env_requirements_by_name = {} } ## # Returns the latest release-version specification for the gem +name+. def self.latest_spec_for(name) dependency = Gem::Dependency.new name fetcher = Gem::SpecFetcher.fetcher spec_tuples, = fetcher.spec_for_dependency dependency spec, = spec_tuples.first spec end ## # Returns the latest release version of RubyGems. def self.latest_rubygems_version latest_version_for('rubygems-update') or raise "Can't find 'rubygems-update' in any repo. Check `gem source list`." end ## # Returns the version of the latest release-version of gem +name+ def self.latest_version_for(name) spec = latest_spec_for name spec and spec.version end ## # A Gem::Version for the currently running Ruby. def self.ruby_version return @ruby_version if defined? @ruby_version version = RUBY_VERSION.dup if defined?(RUBY_PATCHLEVEL) && RUBY_PATCHLEVEL != -1 version << ".#{RUBY_PATCHLEVEL}" elsif defined?(RUBY_DESCRIPTION) if RUBY_ENGINE == "ruby" desc = RUBY_DESCRIPTION[/\Aruby #{Regexp.quote(RUBY_VERSION)}([^ ]+) /, 1] else desc = RUBY_DESCRIPTION[/\A#{RUBY_ENGINE} #{Regexp.quote(RUBY_ENGINE_VERSION)} \(#{RUBY_VERSION}([^ ]+)\) /, 1] end version << ".#{desc}" if desc end @ruby_version = Gem::Version.new version end ## # A Gem::Version for the currently running RubyGems def self.rubygems_version return @rubygems_version if defined? @rubygems_version @rubygems_version = Gem::Version.new Gem::VERSION end ## # Returns an Array of sources to fetch remote gems from. Uses # default_sources if the sources list is empty. def self.sources source_list = configuration.sources \|\| default_sources @sources \|\|= Gem::SourceList.from(source_list) end ## # Need to be able to set the sources without calling # Gem.sources.replace since that would cause an infinite loop. # # DOC: This comment is not documentation about the method itself, it's # more of a code comment about the implementation. def self.sources=(new_sources) if !new_sources @sources = nil else @sources = Gem::SourceList.from(new_sources) end end ## # Glob pattern for require-able path suffixes. def self.suffix_pattern @suffix_pattern \|\|= "{#{suffixes.join(',')}}" end ## # Regexp for require-able path suffixes. def self.suffix_regexp @suffix_regexp \|\|= /#{Regexp.union(suffixes)}\z/ end ## # Glob pattern for require-able plugin suffixes. def self.plugin_suffix_pattern @plugin_suffix_pattern \|\|= "_plugin#{suffix_pattern}" end ## # Regexp for require-able plugin suffixes. def self.plugin_suffix_regexp @plugin_suffix_regexp \|\|= /_plugin#{suffix_regexp}\z/ end ## # Suffixes for require-able paths. def self.suffixes @suffixes \|\|= ['', '.rb', %w[DLEXT DLEXT2].map do \|key\| val = RbConfig::CONFIG[key] next unless val and not val.empty? ".#{val}" end, ].compact.uniq end ## # Prints the amount of time the supplied block takes to run using the debug # UI output. def self.time(msg, width = 0, display = Gem.configuration.verbose) now = Time.now value = yield elapsed = Time.now - now ui.say "%2$1$s: %3$3.3fs" % [-width, msg, elapsed] if display value end ## # Lazily loads DefaultUserInteraction and returns the default UI. def self.ui require_relative 'rubygems/user_interaction' Gem::DefaultUserInteraction.ui end ## # Use the +home+ and +paths+ values for Gem.dir and Gem.path. Used mainly # by the unit tests to provide environment isolation. def self.use_paths(home, paths) paths.flatten! paths.compact! hash = { "GEM_HOME" => home, "GEM_PATH" => paths.empty? ? home : paths.join(File::PATH_SEPARATOR) } hash.delete_if {\|_, v\| v.nil? } self.paths = hash end ## # Is this a windows platform? def self.win_platform? if @@win_platform.nil? ruby_platform = RbConfig::CONFIG['host_os'] @@win_platform = !!WIN_PATTERNS.find {\|r\| ruby_platform =~ r } end @@win_platform end ## # Is this a java platform? def self.java_platform? RUBY_PLATFORM == "java" end ## # Load +plugins+ as Ruby files def self.load_plugin_files(plugins) # :nodoc: plugins.each do \|plugin\| # Skip older versions of the GemCutter plugin: Its commands are in # RubyGems proper now. next if plugin =~ /gemcutter-0\.[0-3]/ begin load plugin rescue ::Exception => e details = "#{plugin.inspect}: #{e.message} (#{e.class})" warn "Error loading RubyGems plugin #{details}" end end end ## # Find rubygems plugin files in the standard location and load them def self.load_plugins Gem.path.each do \|gem_path\| load_plugin_files Gem::Util.glob_files_in_dir("#{Gem.plugin_suffix_pattern}", plugindir(gem_path)) end end ## # Find all 'rubygems_plugin' files in $LOAD_PATH and load them def self.load_env_plugins load_plugin_files find_files_from_load_path("rubygems_plugin") end ## # Looks for a gem dependency file at +path+ and activates the gems in the # file if found. If the file is not found an ArgumentError is raised. # # If +path+ is not given the RUBYGEMS_GEMDEPS environment variable is used, # but if no file is found no exception is raised. # # If '-' is given for +path+ RubyGems searches up from the current working # directory for gem dependency files (gem.deps.rb, Gemfile, Isolate) and # activates the gems in the first one found. # # You can run this automatically when rubygems starts. To enable, set # the <code>RUBYGEMS_GEMDEPS</code> environment variable to either the path # of your gem dependencies file or "-" to auto-discover in parent # directories. # # NOTE: Enabling automatic discovery on multiuser systems can lead to # execution of arbitrary code when used from directories outside your # control. def self.use_gemdeps(path = nil) raise_exception = path path \|\|= ENV['RUBYGEMS_GEMDEPS'] return unless path path = path.dup if path == "-" Gem::Util.traverse_parents Dir.pwd do \|directory\| dep_file = GEM_DEP_FILES.find {\|f\| File.file?(f) } next unless dep_file path = File.join directory, dep_file break end end path.tap(&Gem::UNTAINT) unless File.file? path return unless raise_exception raise ArgumentError, "Unable to find gem dependencies file at #{path}" end ENV["BUNDLE_GEMFILE"] \|\|= File.expand_path(path) require_relative 'rubygems/user_interaction' require "bundler" begin Gem::DefaultUserInteraction.use_ui(ui) do begin Bundler.ui.silence do @gemdeps = Bundler.setup end ensure Gem::DefaultUserInteraction.ui.close end end rescue Bundler::BundlerError => e warn e.message warn "You may need to `bundle install` to install missing gems" warn "" end end ## # If the SOURCE_DATE_EPOCH environment variable is set, returns it's value. # Otherwise, returns the time that `Gem.source_date_epoch_string` was # first called in the same format as SOURCE_DATE_EPOCH. # # NOTE(@duckinator): The implementation is a tad weird because we want to: # 1. Make builds reproducible by default, by having this function always # return the same result during a given run. # 2. Allow changing ENV['SOURCE_DATE_EPOCH'] at runtime, since multiple # tests that set this variable will be run in a single process. # # If you simplify this function and a lot of tests fail, that is likely # due to #2 above. # # Details on SOURCE_DATE_EPOCH: # https://reproducible-builds.org/specs/source-date-epoch/ def self.source_date_epoch_string # The value used if $SOURCE_DATE_EPOCH is not set. @default_source_date_epoch \|\|= Time.now.to_i.to_s specified_epoch = ENV["SOURCE_DATE_EPOCH"] # If it's empty or just whitespace, treat it like it wasn't set at all. specified_epoch = nil if !specified_epoch.nil? && specified_epoch.strip.empty? epoch = specified_epoch \|\| @default_source_date_epoch epoch.strip end ## # Returns the value of Gem.source_date_epoch_string, as a Time object. # # This is used throughout RubyGems for enabling reproducible builds. def self.source_date_epoch Time.at(self.source_date_epoch_string.to_i).utc.freeze end # FIX: Almost everywhere else we use the `def self.` way of defining class # methods, and then we switch over to `class << self` here. Pick one or the # other. class << self ## # RubyGems distributors (like operating system package managers) can # disable RubyGems update by setting this to error message printed to # end-users on gem update --system instead of actual update. attr_accessor :disable_system_update_message ## # Hash of loaded Gem::Specification keyed by name attr_reader :loaded_specs ## # GemDependencyAPI object, which is set when .use_gemdeps is called. # This contains all the information from the Gemfile. attr_reader :gemdeps ## # Register a Gem::Specification for default gem. # # Two formats for the specification are supported: # # * MRI 2.0 style, where spec.files contains unprefixed require names. # The spec's filenames will be registered as-is. # * New style, where spec.files contains files prefixed with paths # from spec.require_paths. The prefixes are stripped before # registering the spec's filenames. Unprefixed files are omitted. # def register_default_spec(spec) extended_require_paths = spec.require_paths.map {\|f\| f + "/" } new_format = extended_require_paths.any? {\|path\| spec.files.any? {\|f\| f.start_with? path } } if new_format prefix_group = extended_require_paths.join("\|") prefix_pattern = /^(#{prefix_group})/ end spec.files.each do \|file\| if new_format file = file.sub(prefix_pattern, "") next unless $~ end spec.activate if already_loaded?(file) @path_to_default_spec_map[file] = spec @path_to_default_spec_map[file.sub(suffix_regexp, "")] = spec end end ## # Find a Gem::Specification of default gem from +path+ def find_unresolved_default_spec(path) default_spec = @path_to_default_spec_map[path] return default_spec if default_spec && loaded_specs[default_spec.name] != default_spec end ## # Clear default gem related variables. It is for test def clear_default_specs @path_to_default_spec_map.clear end ## # The list of hooks to be run after Gem::Installer#install extracts files # and builds extensions attr_reader :post_build_hooks ## # The list of hooks to be run after Gem::Installer#install completes # installation attr_reader :post_install_hooks ## # The list of hooks to be run after Gem::DependencyInstaller installs a # set of gems attr_reader :done_installing_hooks ## # The list of hooks to be run after Gem::Specification.reset is run. attr_reader :post_reset_hooks ## # The list of hooks to be run after Gem::Uninstaller#uninstall completes # installation attr_reader :post_uninstall_hooks ## # The list of hooks to be run before Gem::Installer#install does any work attr_reader :pre_install_hooks ## # The list of hooks to be run before Gem::Specification.reset is run. attr_reader :pre_reset_hooks ## # The list of hooks to be run before Gem::Uninstaller#uninstall does any # work attr_reader :pre_uninstall_hooks private def already_loaded?(file) $LOADED_FEATURES.any? do \|feature_path\| feature_path.end_with?(file) && default_gem_load_paths.any? {\|load_path_entry\| feature_path == "#{load_path_entry}/#{file}" } end end def default_gem_load_paths @default_gem_load_paths \|\|= $LOAD_PATH[load_path_insert_index..-1].map do \|lp\| expanded = File.expand_path(lp) next expanded unless File.exist?(expanded) File.realpath(expanded) end end end ## # Location of Marshal quick gemspecs on remote repositories MARSHAL_SPEC_DIR = "quick/Marshal.#{Gem.marshal_version}/".freeze autoload :BundlerVersionFinder, File.expand_path('rubygems/bundler_version_finder', __dir__) autoload :ConfigFile, File.expand_path('rubygems/config_file', __dir__) autoload :Dependency, File.expand_path('rubygems/dependency', __dir__) autoload :DependencyList, File.expand_path('rubygems/dependency_list', __dir__) autoload :Installer, File.expand_path('rubygems/installer', __dir__) autoload :Licenses, File.expand_path('rubygems/util/licenses', __dir__) autoload :NameTuple, File.expand_path('rubygems/name_tuple', __dir__) autoload :PathSupport, File.expand_path('rubygems/path_support', __dir__) autoload :RequestSet, File.expand_path('rubygems/request_set', __dir__) autoload :Resolver, File.expand_path('rubygems/resolver', __dir__) autoload :Source, File.expand_path('rubygems/source', __dir__) autoload :SourceList, File.expand_path('rubygems/source_list', __dir__) autoload :SpecFetcher, File.expand_path('rubygems/spec_fetcher', __dir__) autoload :Util, File.expand_path('rubygems/util', __dir__) autoload :Version, File.expand_path('rubygems/version', __dir__) end require_relative 'rubygems/exceptions' require_relative 'rubygems/specification' # REFACTOR: This should be pulled out into some kind of hacks file. begin ## # Defaults the operating system (or packager) wants to provide for RubyGems. require 'rubygems/defaults/operating_system' rescue LoadError # Ignored rescue StandardError => e msg = "#{e.message}\n" \ "Loading the rubygems/defaults/operating_system.rb file caused an error. " \ "This file is owned by your OS, not by rubygems upstream. " \ "Please find out which OS package this file belongs to and follow the guidelines from your OS to report " \ "the problem and ask for help." raise e.class, msg end begin ## # Defaults the Ruby implementation wants to provide for RubyGems require "rubygems/defaults/#{RUBY_ENGINE}" rescue LoadError end ## # Loads the default specs. Gem::Specification.load_defaults require_relative 'rubygems/core_ext/kernel_gem' require_relative 'rubygems/core_ext/kernel_require' require_relative 'rubygems/core_ext/kernel_warn' Back

Edit File : rubygems.rb | Size : 36.87 KB

# frozen_string_literal: true
#--
# Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
# All rights reserved.
# See LICENSE.txt for permissions.
#++

require 'rbconfig'

module Gem
  VERSION = "3.2.33".freeze
end

# Must be first since it unloads the prelude from 1.9.2
require_relative 'rubygems/compatibility'

require_relative 'rubygems/defaults'
require_relative 'rubygems/deprecate'
require_relative 'rubygems/errors'

##
# RubyGems is the Ruby standard for publishing and managing third party
# libraries.
#
# For user documentation, see:
#
# * <tt>gem help</tt> and <tt>gem help [command]</tt>
# * {RubyGems User Guide}[https://guides.rubygems.org/]
# * {Frequently Asked Questions}[https://guides.rubygems.org/faqs]
#
# For gem developer documentation see:
#
# * {Creating Gems}[https://guides.rubygems.org/make-your-own-gem]
# * Gem::Specification
# * Gem::Version for version dependency notes
#
# Further RubyGems documentation can be found at:
#
# * {RubyGems Guides}[https://guides.rubygems.org]
# * {RubyGems API}[https://www.rubydoc.info/github/rubygems/rubygems] (also available from
#   <tt>gem server</tt>)
#
# == RubyGems Plugins
#
# RubyGems will load plugins in the latest version of each installed gem or
# $LOAD_PATH.  Plugins must be named 'rubygems_plugin' (.rb, .so, etc) and
# placed at the root of your gem's #require_path.  Plugins are installed at a
# special location and loaded on boot.
#
# For an example plugin, see the {Graph gem}[https://github.com/seattlerb/graph]
# which adds a `gem graph` command.
#
# == RubyGems Defaults, Packaging
#
# RubyGems defaults are stored in lib/rubygems/defaults.rb.  If you're packaging
# RubyGems or implementing Ruby you can change RubyGems' defaults.
#
# For RubyGems packagers, provide lib/rubygems/defaults/operating_system.rb
# and override any defaults from lib/rubygems/defaults.rb.
#
# For Ruby implementers, provide lib/rubygems/defaults/#{RUBY_ENGINE}.rb and
# override any defaults from lib/rubygems/defaults.rb.
#
# If you need RubyGems to perform extra work on install or uninstall, your
# defaults override file can set pre/post install and uninstall hooks.
# See Gem::pre_install, Gem::pre_uninstall, Gem::post_install,
# Gem::post_uninstall.
#
# == Bugs
#
# You can submit bugs to the
# {RubyGems bug tracker}[https://github.com/rubygems/rubygems/issues]
# on GitHub
#
# == Credits
#
# RubyGems is currently maintained by Eric Hodel.
#
# RubyGems was originally developed at RubyConf 2003 by:
#
# * Rich Kilmer  -- rich(at)infoether.com
# * Chad Fowler  -- chad(at)chadfowler.com
# * David Black  -- dblack(at)wobblini.net
# * Paul Brannan -- paul(at)atdesk.com
# * Jim Weirich   -- jim(at)weirichhouse.org
#
# Contributors:
#
# * Gavin Sinclair     -- gsinclair(at)soyabean.com.au
# * George Marrows     -- george.marrows(at)ntlworld.com
# * Dick Davies        -- rasputnik(at)hellooperator.net
# * Mauricio Fernandez -- batsman.geo(at)yahoo.com
# * Simon Strandgaard  -- neoneye(at)adslhome.dk
# * Dave Glasser       -- glasser(at)mit.edu
# * Paul Duncan        -- pabs(at)pablotron.org
# * Ville Aine         -- vaine(at)cs.helsinki.fi
# * Eric Hodel         -- drbrain(at)segment7.net
# * Daniel Berger      -- djberg96(at)gmail.com
# * Phil Hagelberg     -- technomancy(at)gmail.com
# * Ryan Davis         -- ryand-ruby(at)zenspider.com
# * Evan Phoenix       -- evan(at)fallingsnow.net
# * Steve Klabnik      -- steve(at)steveklabnik.com
#
# (If your name is missing, PLEASE let us know!)
#
# == License
#
# See {LICENSE.txt}[rdoc-ref:lib/rubygems/LICENSE.txt] for permissions.
#
# Thanks!
#
# -The RubyGems Team

module Gem
  RUBYGEMS_DIR = File.dirname File.expand_path(__FILE__)

# Taint support is deprecated in Ruby 2.7.
  # This allows switching ".untaint" to ".tap(&Gem::UNTAINT)",
  # to avoid deprecation warnings in Ruby 2.7.
  UNTAINT = RUBY_VERSION < '2.7' ? :untaint.to_sym : proc{}

# When https://bugs.ruby-lang.org/issues/17259 is available, there is no need to override Kernel#warn
  KERNEL_WARN_IGNORES_INTERNAL_ENTRIES = RUBY_ENGINE == "truffleruby" ||
      (RUBY_ENGINE == "ruby" && RUBY_VERSION >= '3.0')

##
  # An Array of Regexps that match windows Ruby platforms.

WIN_PATTERNS = [
    /bccwin/i,
    /cygwin/i,
    /djgpp/i,
    /mingw/i,
    /mswin/i,
    /wince/i,
  ].freeze

GEM_DEP_FILES = %w[
    gem.deps.rb
    gems.rb
    Gemfile
    Isolate
  ].freeze

##
  # Subdirectories in a gem repository

REPOSITORY_SUBDIRECTORIES = %w[
    build_info
    cache
    doc
    extensions
    gems
    plugins
    specifications
  ].freeze

##
  # Subdirectories in a gem repository for default gems

REPOSITORY_DEFAULT_GEM_SUBDIRECTORIES = %w[
    gems
    specifications/default
  ].freeze

##
  # Exception classes used in a Gem.read_binary +rescue+ statement

READ_BINARY_ERRORS = [Errno::EACCES, Errno::EROFS, Errno::ENOSYS, Errno::ENOTSUP].freeze

##
  # Exception classes used in Gem.write_binary +rescue+ statement

WRITE_BINARY_ERRORS = [Errno::ENOSYS, Errno::ENOTSUP].freeze

@@win_platform = nil

@configuration = nil
  @gemdeps = nil
  @loaded_specs = {}
  LOADED_SPECS_MUTEX = Thread::Mutex.new
  @path_to_default_spec_map = {}
  @platforms = []
  @ruby = nil
  @ruby_api_version = nil
  @sources = nil

@post_build_hooks     ||= []
  @post_install_hooks   ||= []
  @post_uninstall_hooks ||= []
  @pre_uninstall_hooks  ||= []
  @pre_install_hooks    ||= []
  @pre_reset_hooks      ||= []
  @post_reset_hooks     ||= []

@default_source_date_epoch = nil

##
  # Try to activate a gem containing +path+. Returns true if
  # activation succeeded or wasn't needed because it was already
  # activated. Returns false if it can't find the path in a gem.

def self.try_activate(path)
    # finds the _latest_ version... regardless of loaded specs and their deps
    # if another gem had a requirement that would mean we shouldn't
    # activate the latest version, then either it would already be activated
    # or if it was ambiguous (and thus unresolved) the code in our custom
    # require will try to activate the more specific version.

spec = Gem::Specification.find_by_path path
    return false unless spec
    return true if spec.activated?

begin
      spec.activate
    rescue Gem::LoadError => e # this could fail due to gem dep collisions, go lax
      spec_by_name = Gem::Specification.find_by_name(spec.name)
      if spec_by_name.nil?
        raise e
      else
        spec_by_name.activate
      end
    end

return true
  end

def self.needs
    rs = Gem::RequestSet.new

yield rs

finish_resolve rs
  end

def self.finish_resolve(request_set=Gem::RequestSet.new)
    request_set.import Gem::Specification.unresolved_deps.values
    request_set.import Gem.loaded_specs.values.map {|s| Gem::Dependency.new(s.name, s.version) }

request_set.resolve_current.each do |s|
      s.full_spec.activate
    end
  end

def self.bin_path(name, exec_name = nil, *requirements)
    requirements = Gem::Requirement.default if
      requirements.empty?

find_spec_for_exe(name, exec_name, requirements).bin_file exec_name
  end

def self.find_spec_for_exe(name, exec_name, requirements)
    raise ArgumentError, "you must supply exec_name" unless exec_name

dep = Gem::Dependency.new name, requirements

loaded = Gem.loaded_specs[name]

return loaded if loaded && dep.matches_spec?(loaded)

specs = dep.matching_specs(true)

specs = specs.find_all do |spec|
      spec.executables.include? exec_name
    end if exec_name

unless spec = specs.first
      msg = "can't find gem #{dep} with executable #{exec_name}"
      if dep.filters_bundler? && bundler_message = Gem::BundlerVersionFinder.missing_version_message
        msg = bundler_message
      end
      raise Gem::GemNotFoundException, msg
    end

spec
  end
  private_class_method :find_spec_for_exe

##
  # Find the full path to the executable for gem +name+.  If the +exec_name+
  # is not given, an exception will be raised, otherwise the
  # specified executable's path is returned.  +requirements+ allows
  # you to specify specific gem versions.
  #
  # A side effect of this method is that it will activate the gem that
  # contains the executable.
  #
  # This method should *only* be used in bin stub files.

def self.activate_bin_path(name, exec_name = nil, *requirements) # :nodoc:
    spec = find_spec_for_exe name, exec_name, requirements
    Gem::LOADED_SPECS_MUTEX.synchronize do
      spec.activate
      finish_resolve
    end
    spec.bin_file exec_name
  end

##
  # The mode needed to read a file as straight binary.

def self.binary_mode
    'rb'
  end

##
  # The path where gem executables are to be installed.

def self.bindir(install_dir=Gem.dir)
    return File.join install_dir, 'bin' unless
      install_dir.to_s == Gem.default_dir.to_s
    Gem.default_bindir
  end

##
  # The path were rubygems plugins are to be installed.

def self.plugindir(install_dir=Gem.dir)
    File.join install_dir, 'plugins'
  end

##
  # Reset the +dir+ and +path+ values.  The next time +dir+ or +path+
  # is requested, the values will be calculated from scratch.  This is
  # mainly used by the unit tests to provide test isolation.

def self.clear_paths
    @paths         = nil
    @user_home     = nil
    Gem::Specification.reset
    Gem::Security.reset if defined?(Gem::Security)
  end

##
  # The standard configuration object for gems.

def self.configuration
    @configuration ||= Gem::ConfigFile.new []
  end

##
  # Use the given configuration object (which implements the ConfigFile
  # protocol) as the standard configuration object.

def self.configuration=(config)
    @configuration = config
  end

##
  # The path to the data directory specified by the gem name.  If the
  # package is not available as a gem, return nil.

def self.datadir(gem_name)
    spec = @loaded_specs[gem_name]
    return nil if spec.nil?
    spec.datadir
  end

##
  # A Zlib::Deflate.deflate wrapper

def self.deflate(data)
    require 'zlib'
    Zlib::Deflate.deflate data
  end

# Retrieve the PathSupport object that RubyGems uses to
  # lookup files.

def self.paths
    @paths ||= Gem::PathSupport.new(ENV)
  end

# Initialize the filesystem paths to use from +env+.
  # +env+ is a hash-like object (typically ENV) that
  # is queried for 'GEM_HOME', 'GEM_PATH', and 'GEM_SPEC_CACHE'
  # Keys for the +env+ hash should be Strings, and values of the hash should
  # be Strings or +nil+.

def self.paths=(env)
    clear_paths
    target = {}
    env.each_pair do |k,v|
      case k
      when 'GEM_HOME', 'GEM_PATH', 'GEM_SPEC_CACHE'
        case v
        when nil, String
          target[k] = v
        when Array
          unless Gem::Deprecate.skip
            warn <<-EOWARN
Array values in the parameter to `Gem.paths=` are deprecated.
Please use a String or nil.
An Array (#{env.inspect}) was passed in from #{caller[3]}
            EOWARN
          end
          target[k] = v.join File::PATH_SEPARATOR
        end
      else
        target[k] = v
      end
    end
    @paths = Gem::PathSupport.new ENV.to_hash.merge(target)
    Gem::Specification.dirs = @paths.path
  end

##
  # The path where gems are to be installed.

def self.dir
    paths.home
  end

def self.path
    paths.path
  end

def self.spec_cache_dir
    paths.spec_cache_dir
  end

##
  # Quietly ensure the Gem directory +dir+ contains all the proper
  # subdirectories.  If we can't create a directory due to a permission
  # problem, then we will silently continue.
  #
  # If +mode+ is given, missing directories are created with this mode.
  #
  # World-writable directories will never be created.

def self.ensure_gem_subdirectories(dir = Gem.dir, mode = nil)
    ensure_subdirectories(dir, mode, REPOSITORY_SUBDIRECTORIES)
  end

##
  # Quietly ensure the Gem directory +dir+ contains all the proper
  # subdirectories for handling default gems.  If we can't create a
  # directory due to a permission problem, then we will silently continue.
  #
  # If +mode+ is given, missing directories are created with this mode.
  #
  # World-writable directories will never be created.

def self.ensure_default_gem_subdirectories(dir = Gem.dir, mode = nil)
    ensure_subdirectories(dir, mode, REPOSITORY_DEFAULT_GEM_SUBDIRECTORIES)
  end

def self.ensure_subdirectories(dir, mode, subdirs) # :nodoc:
    old_umask = File.umask
    File.umask old_umask | 002

require 'fileutils'

options = {}

options[:mode] = mode if mode

subdirs.each do |name|
      subdir = File.join dir, name
      next if File.exist? subdir
      begin
        FileUtils.mkdir_p subdir, **options
      rescue SystemCallError
      end
    end
  ensure
    File.umask old_umask
  end

##
  # The extension API version of ruby.  This includes the static vs non-static
  # distinction as extensions cannot be shared between the two.

def self.extension_api_version # :nodoc:
    if 'no' == RbConfig::CONFIG['ENABLE_SHARED']
      "#{ruby_api_version}-static"
    else
      ruby_api_version
    end
  end

##
  # Returns a list of paths matching +glob+ that can be used by a gem to pick
  # up features from other gems.  For example:
  #
  #   Gem.find_files('rdoc/discover').each do |path| load path end
  #
  # if +check_load_path+ is true (the default), then find_files also searches
  # $LOAD_PATH for files as well as gems.
  #
  # Note that find_files will return all files even if they are from different
  # versions of the same gem.  See also find_latest_files

def self.find_files(glob, check_load_path=true)
    files = []

files = find_files_from_load_path glob if check_load_path

gem_specifications = @gemdeps ? Gem.loaded_specs.values : Gem::Specification.stubs

files.concat gem_specifications.map {|spec|
      spec.matches_for_glob("#{glob}#{Gem.suffix_pattern}")
    }.flatten

# $LOAD_PATH might contain duplicate entries or reference
    # the spec dirs directly, so we prune.
    files.uniq! if check_load_path

return files
  end

def self.find_files_from_load_path(glob) # :nodoc:
    glob_with_suffixes = "#{glob}#{Gem.suffix_pattern}"
    $LOAD_PATH.map do |load_path|
      Gem::Util.glob_files_in_dir(glob_with_suffixes, load_path)
    end.flatten.select {|file| File.file? file.tap(&Gem::UNTAINT) }
  end

##
  # Returns a list of paths matching +glob+ from the latest gems that can be
  # used by a gem to pick up features from other gems.  For example:
  #
  #   Gem.find_latest_files('rdoc/discover').each do |path| load path end
  #
  # if +check_load_path+ is true (the default), then find_latest_files also
  # searches $LOAD_PATH for files as well as gems.
  #
  # Unlike find_files, find_latest_files will return only files from the
  # latest version of a gem.

def self.find_latest_files(glob, check_load_path=true)
    files = []

files = find_files_from_load_path glob if check_load_path

files.concat Gem::Specification.latest_specs(true).map {|spec|
      spec.matches_for_glob("#{glob}#{Gem.suffix_pattern}")
    }.flatten

# $LOAD_PATH might contain duplicate entries or reference
    # the spec dirs directly, so we prune.
    files.uniq! if check_load_path

return files
  end

##
  # Top level install helper method. Allows you to install gems interactively:
  #
  #   % irb
  #   >> Gem.install "minitest"
  #   Fetching: minitest-5.14.0.gem (100%)
  #   => [#<Gem::Specification:0x1013b4528 @name="minitest", ...>]

def self.install(name, version = Gem::Requirement.default, *options)
    require_relative "rubygems/dependency_installer"
    inst = Gem::DependencyInstaller.new(*options)
    inst.install name, version
    inst.installed_gems
  end

##
  # Get the default RubyGems API host. This is normally
  # <tt>https://rubygems.org</tt>.

def self.host
    @host ||= Gem::DEFAULT_HOST
  end

## Set the default RubyGems API host.

def self.host=(host)
    @host = host
  end

##
  # The index to insert activated gem paths into the $LOAD_PATH. The activated
  # gem's paths are inserted before site lib directory by default.

def self.load_path_insert_index
    $LOAD_PATH.each_with_index do |path, i|
      return i if path.instance_variable_defined?(:@gem_prelude_index)
    end

index = $LOAD_PATH.index RbConfig::CONFIG['sitelibdir']

index || 0
  end

##
  # The number of paths in the `$LOAD_PATH` from activated gems. Used to
  # prioritize `-I` and `ENV['RUBYLIB`]` entries during `require`.

def self.activated_gem_paths
    @activated_gem_paths ||= 0
  end

##
  # Add a list of paths to the $LOAD_PATH at the proper place.

def self.add_to_load_path(*paths)
    @activated_gem_paths = activated_gem_paths + paths.size

# gem directories must come after -I and ENV['RUBYLIB']
    $LOAD_PATH.insert(Gem.load_path_insert_index, *paths)
  end

@yaml_loaded = false

##
  # Loads YAML, preferring Psych

def self.load_yaml
    return if @yaml_loaded

begin
      # Try requiring the gem version *or* stdlib version of psych.
      require 'psych'
    rescue ::LoadError
      # If we can't load psych, that's fine, go on.
    else
      require_relative 'rubygems/psych_additions'
      require_relative 'rubygems/psych_tree'
    end

require 'yaml'
    require_relative 'rubygems/safe_yaml'

@yaml_loaded = true
  end

##
  # The file name and line number of the caller of the caller of this method.
  #
  # +depth+ is how many layers up the call stack it should go.
  #
  # e.g.,
  #
  # def a; Gem.location_of_caller; end
  # a #=> ["x.rb", 2]  # (it'll vary depending on file name and line number)
  #
  # def b; c; end
  # def c; Gem.location_of_caller(2); end
  # b #=> ["x.rb", 6]  # (it'll vary depending on file name and line number)

def self.location_of_caller(depth = 1)
    caller[depth] =~ /(.*?):(\d+).*?$/i
    file = $1
    lineno = $2.to_i

[file, lineno]
  end

##
  # The version of the Marshal format for your Ruby.

def self.marshal_version
    "#{Marshal::MAJOR_VERSION}.#{Marshal::MINOR_VERSION}"
  end

##
  # Set array of platforms this RubyGems supports (primarily for testing).

def self.platforms=(platforms)
    @platforms = platforms
  end

##
  # Array of platforms this RubyGems supports.

def self.platforms
    @platforms ||= []
    if @platforms.empty?
      @platforms = [Gem::Platform::RUBY, Gem::Platform.local]
    end
    @platforms
  end

##
  # Adds a post-build hook that will be passed an Gem::Installer instance
  # when Gem::Installer#install is called.  The hook is called after the gem
  # has been extracted and extensions have been built but before the
  # executables or gemspec has been written.  If the hook returns +false+ then
  # the gem's files will be removed and the install will be aborted.

def self.post_build(&hook)
    @post_build_hooks << hook
  end

##
  # Adds a post-install hook that will be passed an Gem::Installer instance
  # when Gem::Installer#install is called

def self.post_install(&hook)
    @post_install_hooks << hook
  end

##
  # Adds a post-installs hook that will be passed a Gem::DependencyInstaller
  # and a list of installed specifications when
  # Gem::DependencyInstaller#install is complete

def self.done_installing(&hook)
    @done_installing_hooks << hook
  end

##
  # Adds a hook that will get run after Gem::Specification.reset is
  # run.

def self.post_reset(&hook)
    @post_reset_hooks << hook
  end

##
  # Adds a post-uninstall hook that will be passed a Gem::Uninstaller instance
  # and the spec that was uninstalled when Gem::Uninstaller#uninstall is
  # called

def self.post_uninstall(&hook)
    @post_uninstall_hooks << hook
  end

##
  # Adds a pre-install hook that will be passed an Gem::Installer instance
  # when Gem::Installer#install is called.  If the hook returns +false+ then
  # the install will be aborted.

def self.pre_install(&hook)
    @pre_install_hooks << hook
  end

##
  # Adds a hook that will get run before Gem::Specification.reset is
  # run.

def self.pre_reset(&hook)
    @pre_reset_hooks << hook
  end

##
  # Adds a pre-uninstall hook that will be passed an Gem::Uninstaller instance
  # and the spec that will be uninstalled when Gem::Uninstaller#uninstall is
  # called

def self.pre_uninstall(&hook)
    @pre_uninstall_hooks << hook
  end

##
  # The directory prefix this RubyGems was installed at. If your
  # prefix is in a standard location (ie, rubygems is installed where
  # you'd expect it to be), then prefix returns nil.

def self.prefix
    prefix = File.dirname RUBYGEMS_DIR

if prefix != File.expand_path(RbConfig::CONFIG['sitelibdir']) and
       prefix != File.expand_path(RbConfig::CONFIG['libdir']) and
       'lib' == File.basename(RUBYGEMS_DIR)
      prefix
    end
  end

##
  # Refresh available gems from disk.

def self.refresh
    Gem::Specification.reset
  end

##
  # Safely read a file in binary mode on all platforms.

def self.read_binary(path)
    File.open path, 'rb+' do |f|
      f.flock(File::LOCK_EX)
      f.read
    end
  rescue *READ_BINARY_ERRORS
    File.open path, 'rb' do |f|
      f.read
    end
  rescue Errno::ENOLCK # NFS
    if Thread.main != Thread.current
      raise
    else
      File.open path, 'rb' do |f|
        f.read
      end
    end
  end

##
  # Safely write a file in binary mode on all platforms.
  def self.write_binary(path, data)
    File.open(path, File::RDWR | File::CREAT | File::BINARY | File::LOCK_EX) do |io|
      io.write data
    end
  rescue *WRITE_BINARY_ERRORS
    File.open(path, 'wb') do |io|
      io.write data
    end
  rescue Errno::ENOLCK # NFS
    if Thread.main != Thread.current
      raise
    else
      File.open(path, 'wb') do |io|
        io.write data
      end
    end
  end

##
  # The path to the running Ruby interpreter.

def self.ruby
    if @ruby.nil?
      @ruby = RbConfig.ruby

@ruby = "\"#{@ruby}\"" if @ruby =~ /\s/
    end

@ruby
  end

##
  # Returns a String containing the API compatibility version of Ruby

def self.ruby_api_version
    @ruby_api_version ||= RbConfig::CONFIG['ruby_version'].dup
  end

def self.env_requirement(gem_name)
    @env_requirements_by_name ||= {}
    @env_requirements_by_name[gem_name] ||= begin
      req = ENV["GEM_REQUIREMENT_#{gem_name.upcase}"] || '>= 0'.freeze
      Gem::Requirement.create(req)
    end
  end
  post_reset { @env_requirements_by_name = {} }

##
  # Returns the latest release-version specification for the gem +name+.

def self.latest_spec_for(name)
    dependency   = Gem::Dependency.new name
    fetcher      = Gem::SpecFetcher.fetcher
    spec_tuples, = fetcher.spec_for_dependency dependency

spec, = spec_tuples.first

spec
  end

##
  # Returns the latest release version of RubyGems.

def self.latest_rubygems_version
    latest_version_for('rubygems-update') or
      raise "Can't find 'rubygems-update' in any repo. Check `gem source list`."
  end

##
  # Returns the version of the latest release-version of gem +name+

def self.latest_version_for(name)
    spec = latest_spec_for name
    spec and spec.version
  end

##
  # A Gem::Version for the currently running Ruby.

def self.ruby_version
    return @ruby_version if defined? @ruby_version
    version = RUBY_VERSION.dup

if defined?(RUBY_PATCHLEVEL) && RUBY_PATCHLEVEL != -1
      version << ".#{RUBY_PATCHLEVEL}"
    elsif defined?(RUBY_DESCRIPTION)
      if RUBY_ENGINE == "ruby"
        desc = RUBY_DESCRIPTION[/\Aruby #{Regexp.quote(RUBY_VERSION)}([^ ]+) /, 1]
      else
        desc = RUBY_DESCRIPTION[/\A#{RUBY_ENGINE} #{Regexp.quote(RUBY_ENGINE_VERSION)} $#{RUBY_VERSION}([^ ]+)$ /, 1]
      end
      version << ".#{desc}" if desc
    end

@ruby_version = Gem::Version.new version
  end

##
  # A Gem::Version for the currently running RubyGems

def self.rubygems_version
    return @rubygems_version if defined? @rubygems_version
    @rubygems_version = Gem::Version.new Gem::VERSION
  end

##
  # Returns an Array of sources to fetch remote gems from. Uses
  # default_sources if the sources list is empty.

def self.sources
    source_list = configuration.sources || default_sources
    @sources ||= Gem::SourceList.from(source_list)
  end

##
  # Need to be able to set the sources without calling
  # Gem.sources.replace since that would cause an infinite loop.
  #
  # DOC: This comment is not documentation about the method itself, it's
  # more of a code comment about the implementation.

def self.sources=(new_sources)
    if !new_sources
      @sources = nil
    else
      @sources = Gem::SourceList.from(new_sources)
    end
  end

##
  # Glob pattern for require-able path suffixes.

def self.suffix_pattern
    @suffix_pattern ||= "{#{suffixes.join(',')}}"
  end

##
  # Regexp for require-able path suffixes.

def self.suffix_regexp
    @suffix_regexp ||= /#{Regexp.union(suffixes)}\z/
  end

##
  # Glob pattern for require-able plugin suffixes.

def self.plugin_suffix_pattern
    @plugin_suffix_pattern ||= "_plugin#{suffix_pattern}"
  end

##
  # Regexp for require-able plugin suffixes.

def self.plugin_suffix_regexp
    @plugin_suffix_regexp ||= /_plugin#{suffix_regexp}\z/
  end

##
  # Suffixes for require-able paths.

def self.suffixes
    @suffixes ||= ['',
                   '.rb',
                   *%w[DLEXT DLEXT2].map do |key|
                     val = RbConfig::CONFIG[key]
                     next unless val and not val.empty?
                     ".#{val}"
                   end,
                  ].compact.uniq
  end

##
  # Prints the amount of time the supplied block takes to run using the debug
  # UI output.

def self.time(msg, width = 0, display = Gem.configuration.verbose)
    now = Time.now

value = yield

elapsed = Time.now - now

ui.say "%2$*1$s: %3$3.3fs" % [-width, msg, elapsed] if display

value
  end

##
  # Lazily loads DefaultUserInteraction and returns the default UI.

def self.ui
    require_relative 'rubygems/user_interaction'

Gem::DefaultUserInteraction.ui
  end

##
  # Use the +home+ and +paths+ values for Gem.dir and Gem.path.  Used mainly
  # by the unit tests to provide environment isolation.

def self.use_paths(home, *paths)
    paths.flatten!
    paths.compact!
    hash = { "GEM_HOME" => home, "GEM_PATH" => paths.empty? ? home : paths.join(File::PATH_SEPARATOR) }
    hash.delete_if {|_, v| v.nil? }
    self.paths = hash
  end

##
  # Is this a windows platform?

def self.win_platform?
    if @@win_platform.nil?
      ruby_platform = RbConfig::CONFIG['host_os']
      @@win_platform = !!WIN_PATTERNS.find {|r| ruby_platform =~ r }
    end

@@win_platform
  end

##
  # Is this a java platform?

def self.java_platform?
    RUBY_PLATFORM == "java"
  end

##
  # Load +plugins+ as Ruby files

def self.load_plugin_files(plugins) # :nodoc:
    plugins.each do |plugin|

# Skip older versions of the GemCutter plugin: Its commands are in
      # RubyGems proper now.

next if plugin =~ /gemcutter-0\.[0-3]/

begin
        load plugin
      rescue ::Exception => e
        details = "#{plugin.inspect}: #{e.message} (#{e.class})"
        warn "Error loading RubyGems plugin #{details}"
      end
    end
  end

##
  # Find rubygems plugin files in the standard location and load them

def self.load_plugins
    Gem.path.each do |gem_path|
      load_plugin_files Gem::Util.glob_files_in_dir("*#{Gem.plugin_suffix_pattern}", plugindir(gem_path))
    end
  end

##
  # Find all 'rubygems_plugin' files in $LOAD_PATH and load them

def self.load_env_plugins
    load_plugin_files find_files_from_load_path("rubygems_plugin")
  end

##
  # Looks for a gem dependency file at +path+ and activates the gems in the
  # file if found.  If the file is not found an ArgumentError is raised.
  #
  # If +path+ is not given the RUBYGEMS_GEMDEPS environment variable is used,
  # but if no file is found no exception is raised.
  #
  # If '-' is given for +path+ RubyGems searches up from the current working
  # directory for gem dependency files (gem.deps.rb, Gemfile, Isolate) and
  # activates the gems in the first one found.
  #
  # You can run this automatically when rubygems starts.  To enable, set
  # the <code>RUBYGEMS_GEMDEPS</code> environment variable to either the path
  # of your gem dependencies file or "-" to auto-discover in parent
  # directories.
  #
  # NOTE: Enabling automatic discovery on multiuser systems can lead to
  # execution of arbitrary code when used from directories outside your
  # control.

def self.use_gemdeps(path = nil)
    raise_exception = path

path ||= ENV['RUBYGEMS_GEMDEPS']
    return unless path

path = path.dup

if path == "-"
      Gem::Util.traverse_parents Dir.pwd do |directory|
        dep_file = GEM_DEP_FILES.find {|f| File.file?(f) }

next unless dep_file

path = File.join directory, dep_file
        break
      end
    end

path.tap(&Gem::UNTAINT)

unless File.file? path
      return unless raise_exception

raise ArgumentError, "Unable to find gem dependencies file at #{path}"
    end

ENV["BUNDLE_GEMFILE"] ||= File.expand_path(path)
    require_relative 'rubygems/user_interaction'
    require "bundler"
    begin
      Gem::DefaultUserInteraction.use_ui(ui) do
        begin
          Bundler.ui.silence do
            @gemdeps = Bundler.setup
          end
        ensure
          Gem::DefaultUserInteraction.ui.close
        end
      end
    rescue Bundler::BundlerError => e
      warn e.message
      warn "You may need to `bundle install` to install missing gems"
      warn ""
    end
  end

##
  # If the SOURCE_DATE_EPOCH environment variable is set, returns it's value.
  # Otherwise, returns the time that `Gem.source_date_epoch_string` was
  # first called in the same format as SOURCE_DATE_EPOCH.
  #
  # NOTE(@duckinator): The implementation is a tad weird because we want to:
  #   1. Make builds reproducible by default, by having this function always
  #      return the same result during a given run.
  #   2. Allow changing ENV['SOURCE_DATE_EPOCH'] at runtime, since multiple
  #      tests that set this variable will be run in a single process.
  #
  # If you simplify this function and a lot of tests fail, that is likely
  # due to #2 above.
  #
  # Details on SOURCE_DATE_EPOCH:
  # https://reproducible-builds.org/specs/source-date-epoch/

def self.source_date_epoch_string
    # The value used if $SOURCE_DATE_EPOCH is not set.
    @default_source_date_epoch ||= Time.now.to_i.to_s

specified_epoch = ENV["SOURCE_DATE_EPOCH"]

# If it's empty or just whitespace, treat it like it wasn't set at all.
    specified_epoch = nil if !specified_epoch.nil? && specified_epoch.strip.empty?

epoch = specified_epoch || @default_source_date_epoch

epoch.strip
  end

##
  # Returns the value of Gem.source_date_epoch_string, as a Time object.
  #
  # This is used throughout RubyGems for enabling reproducible builds.

def self.source_date_epoch
    Time.at(self.source_date_epoch_string.to_i).utc.freeze
  end

# FIX: Almost everywhere else we use the `def self.` way of defining class
  # methods, and then we switch over to `class << self` here. Pick one or the
  # other.
  class << self
    ##
    # RubyGems distributors (like operating system package managers) can
    # disable RubyGems update by setting this to error message printed to
    # end-users on gem update --system instead of actual update.
    attr_accessor :disable_system_update_message

##
    # Hash of loaded Gem::Specification keyed by name

attr_reader :loaded_specs

##
    # GemDependencyAPI object, which is set when .use_gemdeps is called.
    # This contains all the information from the Gemfile.

attr_reader :gemdeps

##
    # Register a Gem::Specification for default gem.
    #
    # Two formats for the specification are supported:
    #
    # * MRI 2.0 style, where spec.files contains unprefixed require names.
    #   The spec's filenames will be registered as-is.
    # * New style, where spec.files contains files prefixed with paths
    #   from spec.require_paths. The prefixes are stripped before
    #   registering the spec's filenames. Unprefixed files are omitted.
    #

def register_default_spec(spec)
      extended_require_paths = spec.require_paths.map {|f| f + "/" }
      new_format = extended_require_paths.any? {|path| spec.files.any? {|f| f.start_with? path } }

if new_format
        prefix_group = extended_require_paths.join("|")
        prefix_pattern = /^(#{prefix_group})/
      end

spec.files.each do |file|
        if new_format
          file = file.sub(prefix_pattern, "")
          next unless $~
        end

spec.activate if already_loaded?(file)

@path_to_default_spec_map[file] = spec
        @path_to_default_spec_map[file.sub(suffix_regexp, "")] = spec
      end
    end

##
    # Find a Gem::Specification of default gem from +path+

def find_unresolved_default_spec(path)
      default_spec = @path_to_default_spec_map[path]
      return default_spec if default_spec && loaded_specs[default_spec.name] != default_spec
    end

##
    # Clear default gem related variables. It is for test

def clear_default_specs
      @path_to_default_spec_map.clear
    end

##
    # The list of hooks to be run after Gem::Installer#install extracts files
    # and builds extensions

attr_reader :post_build_hooks

##
    # The list of hooks to be run after Gem::Installer#install completes
    # installation

attr_reader :post_install_hooks

##
    # The list of hooks to be run after Gem::DependencyInstaller installs a
    # set of gems

attr_reader :done_installing_hooks

##
    # The list of hooks to be run after Gem::Specification.reset is run.

attr_reader :post_reset_hooks

##
    # The list of hooks to be run after Gem::Uninstaller#uninstall completes
    # installation

attr_reader :post_uninstall_hooks

##
    # The list of hooks to be run before Gem::Installer#install does any work

attr_reader :pre_install_hooks

##
    # The list of hooks to be run before Gem::Specification.reset is run.

attr_reader :pre_reset_hooks

##
    # The list of hooks to be run before Gem::Uninstaller#uninstall does any
    # work

attr_reader :pre_uninstall_hooks

private

def already_loaded?(file)
      $LOADED_FEATURES.any? do |feature_path|
        feature_path.end_with?(file) && default_gem_load_paths.any? {|load_path_entry| feature_path == "#{load_path_entry}/#{file}" }
      end
    end

def default_gem_load_paths
      @default_gem_load_paths ||= $LOAD_PATH[load_path_insert_index..-1].map do |lp|
        expanded = File.expand_path(lp)
        next expanded unless File.exist?(expanded)

File.realpath(expanded)
      end
    end
  end

##
  # Location of Marshal quick gemspecs on remote repositories

MARSHAL_SPEC_DIR = "quick/Marshal.#{Gem.marshal_version}/".freeze

autoload :BundlerVersionFinder, File.expand_path('rubygems/bundler_version_finder', __dir__)
  autoload :ConfigFile,         File.expand_path('rubygems/config_file', __dir__)
  autoload :Dependency,         File.expand_path('rubygems/dependency', __dir__)
  autoload :DependencyList,     File.expand_path('rubygems/dependency_list', __dir__)
  autoload :Installer,          File.expand_path('rubygems/installer', __dir__)
  autoload :Licenses,           File.expand_path('rubygems/util/licenses', __dir__)
  autoload :NameTuple,          File.expand_path('rubygems/name_tuple', __dir__)
  autoload :PathSupport,        File.expand_path('rubygems/path_support', __dir__)
  autoload :RequestSet,         File.expand_path('rubygems/request_set', __dir__)
  autoload :Resolver,           File.expand_path('rubygems/resolver', __dir__)
  autoload :Source,             File.expand_path('rubygems/source', __dir__)
  autoload :SourceList,         File.expand_path('rubygems/source_list', __dir__)
  autoload :SpecFetcher,        File.expand_path('rubygems/spec_fetcher', __dir__)
  autoload :Util,               File.expand_path('rubygems/util', __dir__)
  autoload :Version,            File.expand_path('rubygems/version', __dir__)
end

require_relative 'rubygems/exceptions'
require_relative 'rubygems/specification'

# REFACTOR: This should be pulled out into some kind of hacks file.
begin
  ##
  # Defaults the operating system (or packager) wants to provide for RubyGems.

require 'rubygems/defaults/operating_system'
rescue LoadError
  # Ignored
rescue StandardError => e
  msg = "#{e.message}\n" \
    "Loading the rubygems/defaults/operating_system.rb file caused an error. " \
    "This file is owned by your OS, not by rubygems upstream. " \
    "Please find out which OS package this file belongs to and follow the guidelines from your OS to report " \
    "the problem and ask for help."
  raise e.class, msg
end

begin
  ##
  # Defaults the Ruby implementation wants to provide for RubyGems

require "rubygems/defaults/#{RUBY_ENGINE}"
rescue LoadError
end

##
# Loads the default specs.
Gem::Specification.load_defaults

require_relative 'rubygems/core_ext/kernel_gem'
require_relative 'rubygems/core_ext/kernel_require'
require_relative 'rubygems/core_ext/kernel_warn'

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