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# frozen_string_literal: true # -- ruby -- #-- # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others. # All rights reserved. # See LICENSE.txt for permissions. #++ require 'rbconfig' module Gem VERSION = "3.0.3.1".freeze end # Must be first since it unloads the prelude from 1.9.2 require 'rubygems/compatibility' require 'rubygems/defaults' require 'rubygems/deprecate' require '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}[http://guides.rubygems.org/] # * {Frequently Asked Questions}[http://guides.rubygems.org/faqs] # # For gem developer documentation see: # # * {Creating Gems}[http://guides.rubygems.org/make-your-own-gem] # * Gem::Specification # * Gem::Version for version dependency notes # # Further RubyGems documentation can be found at: # # * {RubyGems Guides}[http://guides.rubygems.org] # * {RubyGems API}[http://www.rubydoc.info/github/rubygems/rubygems] (also available from # <tt>gem server</tt>) # # == RubyGems Plugins # # As of RubyGems 1.3.2, RubyGems will load plugins installed in gems 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 discovered via # Gem::find_files and then loaded. # # 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__) ## # 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 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. Not all of # these are defined in Ruby 1.8.7, hence the need for this convoluted setup. READ_BINARY_ERRORS = begin read_binary_errors = [Errno::EACCES, Errno::EROFS, Errno::ENOSYS] read_binary_errors << Errno::ENOTSUP if Errno.const_defined?(:ENOTSUP) read_binary_errors end.freeze ## # Exception classes used in Gem.write_binary +rescue+ statement. Not all of # these are defined in Ruby 1.8.7. WRITE_BINARY_ERRORS = begin write_binary_errors = [Errno::ENOSYS] write_binary_errors << Errno::ENOTSUP if Errno.const_defined?(:ENOTSUP) write_binary_errors end.freeze USE_BUNDLER_FOR_GEMDEPS = !ENV['DONT_USE_BUNDLER_FOR_GEMDEPS'] # :nodoc: @@win_platform = nil @configuration = nil @gemdeps = nil @loaded_specs = {} LOADED_SPECS_MUTEX = 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 \|\|= [] ## # 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) # TODO: fails test_self_bin_path_bin_file_gone_in_latest # Gem::Specification.find_by_name(name, requirements).bin_file exec_name raise ArgumentError, "you must supply exec_name" unless exec_name 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) 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 { \|spec\| spec.executables.include? exec_name } if exec_name unless spec = specs.first msg = "can't find gem #{dep} with executable #{exec_name}" if name == "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, requirement) # :nodoc: spec = find_spec_for_exe name, exec_name, [requirement] 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 ## # 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 path to standard location of the user's .gemrc file. def self.config_file @config_file \|\|= File.join Gem.user_home, '.gemrc' 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. #-- # FIXME deprecate these once everything else has been done -ebh 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 FileUtils.mkdir_p subdir, options rescue nil 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 { \|load_path\| Gem::Util.glob_files_in_dir(glob_with_suffixes, load_path) }.flatten.select { \|file\| File.file? file.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 ## # Finds the user's home directory. #-- # Some comments from the ruby-talk list regarding finding the home # directory: # # I have HOME, USERPROFILE and HOMEDRIVE + HOMEPATH. Ruby seems # to be depending on HOME in those code samples. I propose that # it should fallback to USERPROFILE and HOMEDRIVE + HOMEPATH (at # least on Win32). #++ #-- # # FIXME move to pathsupport # #++ def self.find_home Dir.home.dup rescue if Gem.win_platform? File.expand_path File.join(ENV['HOMEDRIVE'] \|\| ENV['SystemDrive'], '/') else File.expand_path "/" end end private_class_method :find_home # TODO: remove in RubyGems 4.0 ## # Zlib::GzipReader wrapper that unzips +data+. def self.gunzip(data) Gem::Util.gunzip data end class << self extend Gem::Deprecate deprecate :gunzip, "Gem::Util.gunzip", 2018, 12 end ## # Zlib::GzipWriter wrapper that zips +data+. def self.gzip(data) Gem::Util.gzip data end class << self extend Gem::Deprecate deprecate :gzip, "Gem::Util.gzip", 2018, 12 end ## # A Zlib::Inflate#inflate wrapper def self.inflate(data) Gem::Util.inflate data end class << self extend Gem::Deprecate deprecate :inflate, "Gem::Util.inflate", 2018, 12 end ## # Top level install helper method. Allows you to install gems interactively: # # % irb # >> Gem.install "minitest" # Fetching: minitest-3.0.1.gem (100%) # => [#<Gem::Specification:0x1013b4528 @name="minitest", ...>] def self.install(name, version = Gem::Requirement.default, options) require "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 # TODO: move to utils @host \|\|= Gem::DEFAULT_HOST end ## Set the default RubyGems API host. def self.host=(host) # TODO: move to utils @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 = $LOAD_PATH.index RbConfig::CONFIG['sitelibdir'] index end @yaml_loaded = false ## # Loads YAML, preferring Psych def self.load_yaml return if @yaml_loaded return unless defined?(gem) begin gem 'psych', '>= 2.0.0' rescue Gem::LoadError # It's OK if the user does not have the psych gem installed. We will # attempt to require the stdlib version end begin # Try requiring the gem version or stdlib version of psych. require 'psych' rescue ::LoadError # If we can't load psych, thats fine, go on. else # If 'yaml' has already been required, then we have to # be sure to switch it over to the newly loaded psych. if defined?(YAML::ENGINE) && YAML::ENGINE.yamler != "psych" YAML::ENGINE.yamler = "psych" end require 'rubygems/psych_additions' require 'rubygems/psych_tree' end require 'yaml' require 'rubygems/safe_yaml' # Now that we're sure some kind of yaml library is loaded, pull # in our hack to deal with Syck's DefaultKey ugliness. require 'rubygems/syck_hack' @yaml_loaded = true end ## # The file name and line number of the caller of the caller of this method. # # +depth+ is how many layers up the call stack it should go. # # e.g., # # def a; Gem.location_of_caller; end # a #=> ["x.rb", 2] # (it'll vary depending on file name and line number) # # def b; c; end # def c; Gem.location_of_caller(2); end # b #=> ["x.rb", 6] # (it'll vary depending on file name and line number) def self.location_of_caller(depth = 1) caller[depth] =~ /(.?):(\d+).?$/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) open(path, 'wb') do \|io\| begin io.flock(File::LOCK_EX) rescue WRITE_BINARY_ERRORS end io.write data end rescue Errno::ENOLCK # NFS if Thread.main != Thread.current raise else 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 = File.join(RbConfig::CONFIG['bindir'], "#{RbConfig::CONFIG['ruby_install_name']}#{RbConfig::CONFIG['EXEEXT']}") @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 ## # Suffixes for require-able paths. def self.suffixes @suffixes \|\|= ['', '.rb', %w(DLEXT DLEXT2).map { \|key\| val = RbConfig::CONFIG[key] next unless val and not val.empty? ".#{val}" } ].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 '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 ## # The home directory for the user. def self.user_home @user_home \|\|= find_home.untaint 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 ## # 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 the 'rubygems_plugin' files in the latest installed gems and load # them def self.load_plugins # Remove this env var by at least 3.0 if ENV['RUBYGEMS_LOAD_ALL_PLUGINS'] load_plugin_files find_files('rubygems_plugin', false) else load_plugin_files find_latest_files('rubygems_plugin', false) end end ## # Find all 'rubygems_plugin' files in $LOAD_PATH and load them def self.load_env_plugins path = "rubygems_plugin" files = [] glob = "#{path}#{Gem.suffix_pattern}" $LOAD_PATH.each do \|load_path\| globbed = Gem::Util.glob_files_in_dir(glob, load_path) globbed.each do \|load_path_file\| files << load_path_file if File.file?(load_path_file.untaint) end end load_plugin_files files 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.untaint unless File.file? path return unless raise_exception raise ArgumentError, "Unable to find gem dependencies file at #{path}" end if USE_BUNDLER_FOR_GEMDEPS ENV["BUNDLE_GEMFILE"] \|\|= File.expand_path(path) require 'rubygems/user_interaction' Gem::DefaultUserInteraction.use_ui(ui) do require "bundler" @gemdeps = Bundler.setup Bundler.ui = nil @gemdeps.requested_specs.map(&:to_spec).sort_by(&:name) end else rs = Gem::RequestSet.new @gemdeps = rs.load_gemdeps path rs.resolve_current.map do \|s\| s.full_spec.tap(&:activate) end end rescue => e case e when Gem::LoadError, Gem::UnsatisfiableDependencyError, (defined?(Bundler::GemNotFound) ? Bundler::GemNotFound : Gem::LoadError) warn e.message warn "You may need to `gem install -g` to install missing gems" warn "" else raise end end class << self ## # TODO remove with RubyGems 4.0 alias detect_gemdeps use_gemdeps # :nodoc: extend Gem::Deprecate deprecate :detect_gemdeps, "Gem.use_gemdeps", 2018, 12 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 ## # 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) new_format = Gem.default_gems_use_full_paths? \|\| spec.require_paths.any? {\|path\| spec.files.any? {\|f\| f.start_with? path } } if new_format prefix_group = spec.require_paths.map {\|f\| f + "/"}.join("\|") prefix_pattern = /^(#{prefix_group})/ end suffix_pattern = /#{Regexp.union(Gem.suffixes)}\z/ spec.files.each do \|file\| if new_format file = file.sub(prefix_pattern, "") next unless $~ end @path_to_default_spec_map[file] = spec @path_to_default_spec_map[file.sub(suffix_pattern, "")] = spec end end ## # Find a Gem::Specification of default gem from +path+ def find_unresolved_default_spec(path) @path_to_default_spec_map[path] end ## # Remove needless Gem::Specification of default gem from # unresolved default gem list def remove_unresolved_default_spec(spec) spec.files.each do \|file\| @path_to_default_spec_map.delete(file) end 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 end ## # Location of Marshal quick gemspecs on remote repositories MARSHAL_SPEC_DIR = "quick/Marshal.#{Gem.marshal_version}/".freeze autoload :BundlerVersionFinder, 'rubygems/bundler_version_finder' autoload :ConfigFile, 'rubygems/config_file' autoload :Dependency, 'rubygems/dependency' autoload :DependencyList, 'rubygems/dependency_list' autoload :Installer, 'rubygems/installer' autoload :Licenses, 'rubygems/util/licenses' autoload :PathSupport, 'rubygems/path_support' autoload :Platform, 'rubygems/platform' autoload :RequestSet, 'rubygems/request_set' autoload :Requirement, 'rubygems/requirement' autoload :Resolver, 'rubygems/resolver' autoload :Source, 'rubygems/source' autoload :SourceList, 'rubygems/source_list' autoload :SpecFetcher, 'rubygems/spec_fetcher' autoload :Specification, 'rubygems/specification' autoload :Util, 'rubygems/util' autoload :Version, 'rubygems/version' require "rubygems/specification" end require 'rubygems/exceptions' # 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 end if defined?(RUBY_ENGINE) begin ## # Defaults the Ruby implementation wants to provide for RubyGems require "rubygems/defaults/#{RUBY_ENGINE}" rescue LoadError end end ## # Loads the default specs. Gem::Specification.load_defaults require 'rubygems/core_ext/kernel_gem' require 'rubygems/core_ext/kernel_require' require 'rubygems/core_ext/kernel_warn' Gem.use_gemdeps Back

Edit File : rubygems.rb | Size : 36.11 KB

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

require 'rbconfig'

module Gem
  VERSION = "3.0.3.1".freeze
end

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

require 'rubygems/defaults'
require 'rubygems/deprecate'
require '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}[http://guides.rubygems.org/]
# * {Frequently Asked Questions}[http://guides.rubygems.org/faqs]
#
# For gem developer documentation see:
#
# * {Creating Gems}[http://guides.rubygems.org/make-your-own-gem]
# * Gem::Specification
# * Gem::Version for version dependency notes
#
# Further RubyGems documentation can be found at:
#
# * {RubyGems Guides}[http://guides.rubygems.org]
# * {RubyGems API}[http://www.rubydoc.info/github/rubygems/rubygems] (also available from
#   <tt>gem server</tt>)
#
# == RubyGems Plugins
#
# As of RubyGems 1.3.2, RubyGems will load plugins installed in gems 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 discovered via
# Gem::find_files and then loaded.
#
# 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__)

##
  # 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
    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. Not all of
  # these are defined in Ruby 1.8.7, hence the need for this convoluted setup.

READ_BINARY_ERRORS = begin
    read_binary_errors = [Errno::EACCES, Errno::EROFS, Errno::ENOSYS]
    read_binary_errors << Errno::ENOTSUP if Errno.const_defined?(:ENOTSUP)
    read_binary_errors
  end.freeze

##
  # Exception classes used in Gem.write_binary +rescue+ statement. Not all of
  # these are defined in Ruby 1.8.7.

WRITE_BINARY_ERRORS = begin
    write_binary_errors = [Errno::ENOSYS]
    write_binary_errors << Errno::ENOTSUP if Errno.const_defined?(:ENOTSUP)
    write_binary_errors
  end.freeze

USE_BUNDLER_FOR_GEMDEPS = !ENV['DONT_USE_BUNDLER_FOR_GEMDEPS'] # :nodoc:

@@win_platform = nil

@configuration = nil
  @gemdeps = nil
  @loaded_specs = {}
  LOADED_SPECS_MUTEX = 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     ||= []

##
  # 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)
    # TODO: fails test_self_bin_path_bin_file_gone_in_latest
    # Gem::Specification.find_by_name(name, *requirements).bin_file exec_name

raise ArgumentError, "you must supply exec_name" unless exec_name

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)
    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 { |spec|
      spec.executables.include? exec_name
    } if exec_name

unless spec = specs.first
      msg = "can't find gem #{dep} with executable #{exec_name}"
      if name == "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, requirement) # :nodoc:
    spec = find_spec_for_exe name, exec_name, [requirement]
    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

##
  # 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 path to standard location of the user's .gemrc file.

def self.config_file
    @config_file ||= File.join Gem.user_home, '.gemrc'
  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.
  #--
  # FIXME deprecate these once everything else has been done -ebh

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
      FileUtils.mkdir_p subdir, options rescue nil
    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 { |load_path|
      Gem::Util.glob_files_in_dir(glob_with_suffixes, load_path)
    }.flatten.select { |file| File.file? file.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

##
  # Finds the user's home directory.
  #--
  # Some comments from the ruby-talk list regarding finding the home
  # directory:
  #
  #   I have HOME, USERPROFILE and HOMEDRIVE + HOMEPATH. Ruby seems
  #   to be depending on HOME in those code samples. I propose that
  #   it should fallback to USERPROFILE and HOMEDRIVE + HOMEPATH (at
  #   least on Win32).
  #++
  #--
  #
  # FIXME move to pathsupport
  #
  #++

def self.find_home
    Dir.home.dup
  rescue
    if Gem.win_platform?
      File.expand_path File.join(ENV['HOMEDRIVE'] || ENV['SystemDrive'], '/')
    else
      File.expand_path "/"
    end
  end

private_class_method :find_home

# TODO:  remove in RubyGems 4.0

##
  # Zlib::GzipReader wrapper that unzips +data+.

def self.gunzip(data)
    Gem::Util.gunzip data
  end

class << self
    extend Gem::Deprecate
    deprecate :gunzip, "Gem::Util.gunzip", 2018, 12
  end

##
  # Zlib::GzipWriter wrapper that zips +data+.

def self.gzip(data)
    Gem::Util.gzip data
  end

class << self
    extend Gem::Deprecate
    deprecate :gzip, "Gem::Util.gzip", 2018, 12
  end

##
  # A Zlib::Inflate#inflate wrapper

def self.inflate(data)
    Gem::Util.inflate data
  end

class << self
    extend Gem::Deprecate
    deprecate :inflate, "Gem::Util.inflate", 2018, 12
  end

##
  # Top level install helper method. Allows you to install gems interactively:
  #
  #   % irb
  #   >> Gem.install "minitest"
  #   Fetching: minitest-3.0.1.gem (100%)
  #   => [#<Gem::Specification:0x1013b4528 @name="minitest", ...>]

def self.install(name, version = Gem::Requirement.default, *options)
    require "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
    # TODO: move to utils
    @host ||= Gem::DEFAULT_HOST
  end

## Set the default RubyGems API host.

def self.host=(host)
    # TODO: move to utils
    @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
  end

@yaml_loaded = false

##
  # Loads YAML, preferring Psych

def self.load_yaml
    return if @yaml_loaded
    return unless defined?(gem)

begin
      gem 'psych', '>= 2.0.0'
    rescue Gem::LoadError
      # It's OK if the user does not have the psych gem installed.  We will
      # attempt to require the stdlib version
    end

begin
      # Try requiring the gem version *or* stdlib version of psych.
      require 'psych'
    rescue ::LoadError
      # If we can't load psych, thats fine, go on.
    else
      # If 'yaml' has already been required, then we have to
      # be sure to switch it over to the newly loaded psych.
      if defined?(YAML::ENGINE) && YAML::ENGINE.yamler != "psych"
        YAML::ENGINE.yamler = "psych"
      end

require 'rubygems/psych_additions'
      require 'rubygems/psych_tree'
    end

require 'yaml'
    require 'rubygems/safe_yaml'

# Now that we're sure some kind of yaml library is loaded, pull
    # in our hack to deal with Syck's DefaultKey ugliness.
    require 'rubygems/syck_hack'

@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)
    open(path, 'wb') do |io|
      begin
        io.flock(File::LOCK_EX)
      rescue *WRITE_BINARY_ERRORS
      end
      io.write data
    end
  rescue Errno::ENOLCK # NFS
    if Thread.main != Thread.current
      raise
    else
      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 = File.join(RbConfig::CONFIG['bindir'],
                        "#{RbConfig::CONFIG['ruby_install_name']}#{RbConfig::CONFIG['EXEEXT']}")

@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

##
  # Suffixes for require-able paths.

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

##
  # The home directory for the user.

def self.user_home
    @user_home ||= find_home.untaint
  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

##
  # 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 the 'rubygems_plugin' files in the latest installed gems and load
  # them

def self.load_plugins
    # Remove this env var by at least 3.0
    if ENV['RUBYGEMS_LOAD_ALL_PLUGINS']
      load_plugin_files find_files('rubygems_plugin', false)
    else
      load_plugin_files find_latest_files('rubygems_plugin', false)
    end
  end

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

def self.load_env_plugins
    path = "rubygems_plugin"

files = []
    glob = "#{path}#{Gem.suffix_pattern}"
    $LOAD_PATH.each do |load_path|
      globbed = Gem::Util.glob_files_in_dir(glob, load_path)

globbed.each do |load_path_file|
        files << load_path_file if File.file?(load_path_file.untaint)
      end
    end

load_plugin_files files
  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.untaint

unless File.file? path
      return unless raise_exception

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

if USE_BUNDLER_FOR_GEMDEPS

ENV["BUNDLE_GEMFILE"] ||= File.expand_path(path)
      require 'rubygems/user_interaction'
      Gem::DefaultUserInteraction.use_ui(ui) do
        require "bundler"
        @gemdeps = Bundler.setup
        Bundler.ui = nil
        @gemdeps.requested_specs.map(&:to_spec).sort_by(&:name)
      end

else

rs = Gem::RequestSet.new
      @gemdeps = rs.load_gemdeps path

rs.resolve_current.map do |s|
        s.full_spec.tap(&:activate)
      end

end
  rescue => e
    case e
    when Gem::LoadError, Gem::UnsatisfiableDependencyError, (defined?(Bundler::GemNotFound) ? Bundler::GemNotFound : Gem::LoadError)
      warn e.message
      warn "You may need to `gem install -g` to install missing gems"
      warn ""
    else
      raise
    end
  end

class << self
    ##
    # TODO remove with RubyGems 4.0

alias detect_gemdeps use_gemdeps # :nodoc:

extend Gem::Deprecate
    deprecate :detect_gemdeps, "Gem.use_gemdeps", 2018, 12
  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

##
    # 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)
      new_format = Gem.default_gems_use_full_paths? || spec.require_paths.any? {|path| spec.files.any? {|f| f.start_with? path } }

if new_format
        prefix_group = spec.require_paths.map {|f| f + "/"}.join("|")
        prefix_pattern = /^(#{prefix_group})/
      end

suffix_pattern = /#{Regexp.union(Gem.suffixes)}\z/

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

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

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

def find_unresolved_default_spec(path)
      @path_to_default_spec_map[path]
    end

##
    # Remove needless Gem::Specification of default gem from
    # unresolved default gem list

def remove_unresolved_default_spec(spec)
      spec.files.each do |file|
        @path_to_default_spec_map.delete(file)
      end
    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
  end

##
  # Location of Marshal quick gemspecs on remote repositories

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

autoload :BundlerVersionFinder, 'rubygems/bundler_version_finder'
  autoload :ConfigFile,         'rubygems/config_file'
  autoload :Dependency,         'rubygems/dependency'
  autoload :DependencyList,     'rubygems/dependency_list'
  autoload :Installer,          'rubygems/installer'
  autoload :Licenses,           'rubygems/util/licenses'
  autoload :PathSupport,        'rubygems/path_support'
  autoload :Platform,           'rubygems/platform'
  autoload :RequestSet,         'rubygems/request_set'
  autoload :Requirement,        'rubygems/requirement'
  autoload :Resolver,           'rubygems/resolver'
  autoload :Source,             'rubygems/source'
  autoload :SourceList,         'rubygems/source_list'
  autoload :SpecFetcher,        'rubygems/spec_fetcher'
  autoload :Specification,      'rubygems/specification'
  autoload :Util,               'rubygems/util'
  autoload :Version,            'rubygems/version'

require "rubygems/specification"
end

require 'rubygems/exceptions'

# 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
end

if defined?(RUBY_ENGINE)
  begin
    ##
    # Defaults the Ruby implementation wants to provide for RubyGems

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

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

require 'rubygems/core_ext/kernel_gem'
require 'rubygems/core_ext/kernel_require'
require 'rubygems/core_ext/kernel_warn'

Gem.use_gemdeps

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