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Edit File : specification.rb \| Size : 82.56 KB
# -- coding: utf-8 -- # frozen_string_literal: true #-- # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others. # All rights reserved. # See LICENSE.txt for permissions. #++ require 'rubygems/version' require 'rubygems/requirement' require 'rubygems/platform' require 'rubygems/deprecate' require 'rubygems/basic_specification' require 'rubygems/stub_specification' require 'rubygems/util/list' require 'stringio' require 'uri' ## # The Specification class contains the information for a Gem. Typically # defined in a .gemspec file or a Rakefile, and looks like this: # # Gem::Specification.new do \|s\| # s.name = 'example' # s.version = '0.1.0' # s.licenses = ['MIT'] # s.summary = "This is an example!" # s.description = "Much longer explanation of the example!" # s.authors = ["Ruby Coder"] # s.email = 'rubycoder@example.com' # s.files = ["lib/example.rb"] # s.homepage = 'https://rubygems.org/gems/example' # s.metadata = { "source_code_uri" => "https://github.com/example/example" } # end # # Starting in RubyGems 2.0, a Specification can hold arbitrary # metadata. See #metadata for restrictions on the format and size of metadata # items you may add to a specification. class Gem::Specification < Gem::BasicSpecification # REFACTOR: Consider breaking out this version stuff into a separate # module. There's enough special stuff around it that it may justify # a separate class. ## # The version number of a specification that does not specify one # (i.e. RubyGems 0.7 or earlier). NONEXISTENT_SPECIFICATION_VERSION = -1 ## # The specification version applied to any new Specification instances # created. This should be bumped whenever something in the spec format # changes. # # Specification Version History: # # spec ruby # ver ver yyyy-mm-dd description # -1 <0.8.0 pre-spec-version-history # 1 0.8.0 2004-08-01 Deprecated "test_suite_file" for "test_files" # "test_file=x" is a shortcut for "test_files=[x]" # 2 0.9.5 2007-10-01 Added "required_rubygems_version" # Now forward-compatible with future versions # 3 1.3.2 2009-01-03 Added Fixnum validation to specification_version # 4 1.9.0 2011-06-07 Added metadata #-- # When updating this number, be sure to also update #to_ruby. # # NOTE RubyGems < 1.2 cannot load specification versions > 2. CURRENT_SPECIFICATION_VERSION = 4 # :nodoc: ## # An informal list of changes to the specification. The highest-valued # key should be equal to the CURRENT_SPECIFICATION_VERSION. SPECIFICATION_VERSION_HISTORY = { # :nodoc: -1 => ['(RubyGems versions up to and including 0.7 did not have versioned specifications)'], 1 => [ 'Deprecated "test_suite_file" in favor of the new, but equivalent, "test_files"', '"test_file=x" is a shortcut for "test_files=[x]"' ], 2 => [ 'Added "required_rubygems_version"', 'Now forward-compatible with future versions', ], 3 => [ 'Added Fixnum validation to the specification_version' ], 4 => [ 'Added sandboxed freeform metadata to the specification version.' ] } MARSHAL_FIELDS = { # :nodoc: -1 => 16, 1 => 16, 2 => 16, 3 => 17, 4 => 18, } today = Time.now.utc TODAY = Time.utc(today.year, today.month, today.day) # :nodoc: LOAD_CACHE = {} # :nodoc: private_constant :LOAD_CACHE if defined? private_constant VALID_NAME_PATTERN = /\A[a-zA-Z0-9\.\-\_]+\z/ # :nodoc: # :startdoc: ## # List of attribute names: [:name, :version, ...] @@required_attributes = [:rubygems_version, :specification_version, :name, :version, :date, :summary, :require_paths] ## # Map of attribute names to default values. @@default_value = { :authors => [], :autorequire => nil, :bindir => 'bin', :cert_chain => [], :date => TODAY, :dependencies => [], :description => nil, :email => nil, :executables => [], :extensions => [], :extra_rdoc_files => [], :files => [], :homepage => nil, :licenses => [], :metadata => {}, :name => nil, :platform => Gem::Platform::RUBY, :post_install_message => nil, :rdoc_options => [], :require_paths => ['lib'], :required_ruby_version => Gem::Requirement.default, :required_rubygems_version => Gem::Requirement.default, :requirements => [], :rubyforge_project => nil, :rubygems_version => Gem::VERSION, :signing_key => nil, :specification_version => CURRENT_SPECIFICATION_VERSION, :summary => nil, :test_files => [], :version => nil, }.freeze INITIALIZE_CODE_FOR_DEFAULTS = { } # :nodoc: @@default_value.each do \|k,v\| INITIALIZE_CODE_FOR_DEFAULTS[k] = case v when [], {}, true, false, nil, Numeric, Symbol v.inspect when String v.dump when Numeric "default_value(:#{k})" else "default_value(:#{k}).dup" end end @@attributes = @@default_value.keys.sort_by { \|s\| s.to_s } @@array_attributes = @@default_value.reject { \|k,v\| v != [] }.keys @@nil_attributes, @@non_nil_attributes = @@default_value.keys.partition { \|k\| @@default_value[k].nil? } @@stubs_by_name = {} # Sentinel object to represent "not found" stubs NOT_FOUND = Struct.new(:to_spec, :this).new # :nodoc: @@spec_with_requirable_file = {} @@active_stub_with_requirable_file = {} ###################################################################### # :section: Required gemspec attributes ## # This gem's name. # # Usage: # # spec.name = 'rake' attr_accessor :name ## # This gem's version. # # The version string can contain numbers and periods, such as +1.0.0+. # A gem is a 'prerelease' gem if the version has a letter in it, such as # +1.0.0.pre+. # # Usage: # # spec.version = '0.4.1' attr_reader :version ## # A short summary of this gem's description. Displayed in `gem list -d`. # # The #description should be more detailed than the summary. # # Usage: # # spec.summary = "This is a small summary of my gem" attr_reader :summary ## # Files included in this gem. You cannot append to this accessor, you must # assign to it. # # Only add files you can require to this list, not directories, etc. # # Directories are automatically stripped from this list when building a gem, # other non-files cause an error. # # Usage: # # require 'rake' # spec.files = FileList['lib/*/.rb', # 'bin/', # '[A-Z]', # 'test/*/'].to_a # # # or without Rake... # spec.files = Dir['lib/*/.rb'] + Dir['bin/'] # spec.files += Dir['[A-Z]'] + Dir['test/*/'] # spec.files.reject! { \|fn\| fn.include? "CVS" } def files # DO NOT CHANGE TO \|\|= ! This is not a normal accessor. (yes, it sucks) # DOC: Why isn't it normal? Why does it suck? How can we fix this? @files = [@files, @test_files, add_bindir(@executables), @extra_rdoc_files, @extensions, ].flatten.compact.uniq.sort end ###################################################################### # :section: Recommended gemspec attributes ## # Singular writer for #authors # # Usage: # # spec.author = 'John Jones' def author= o self.authors = [o] end ## # Sets the list of authors, ensuring it is an array. # # Usage: # # spec.authors = ['John Jones', 'Mary Smith'] def authors= value @authors = Array(value).flatten.grep(String) end ## # A long description of this gem # # The description should be more detailed than the summary but not # excessively long. A few paragraphs is a recommended length with no # examples or formatting. # # Usage: # # spec.description = <<-EOF # Rake is a Make-like program implemented in Ruby. Tasks and # dependencies are specified in standard Ruby syntax. # EOF attr_reader :description ## # A contact email address (or addresses) for this gem # # Usage: # # spec.email = 'john.jones@example.com' # spec.email = ['jack@example.com', 'jill@example.com'] attr_accessor :email ## # The URL of this gem's home page # # Usage: # # spec.homepage = 'https://github.com/ruby/rake' attr_accessor :homepage ## # The license for this gem. # # The license must be no more than 64 characters. # # This should just be the name of your license. The full text of the license # should be inside of the gem (at the top level) when you build it. # # The simplest way, is to specify the standard SPDX ID # https://spdx.org/licenses/ for the license. # Ideally you should pick one that is OSI (Open Source Initiative) # http://opensource.org/licenses/alphabetical approved. # # The most commonly used OSI approved licenses are MIT and Apache-2.0. # GitHub also provides a license picker at http://choosealicense.com/. # # You should specify a license for your gem so that people know how they are # permitted to use it, and any restrictions you're placing on it. Not # specifying a license means all rights are reserved; others have no rights # to use the code for any purpose. # # You can set multiple licenses with #licenses= # # Usage: # spec.license = 'MIT' def license=o self.licenses = [o] end ## # The license(s) for the library. # # Each license must be a short name, no more than 64 characters. # # This should just be the name of your license. The full # text of the license should be inside of the gem when you build it. # # See #license= for more discussion # # Usage: # spec.licenses = ['MIT', 'GPL-2.0'] def licenses= licenses @licenses = Array licenses end ## # The metadata holds extra data for this gem that may be useful to other # consumers and is settable by gem authors without requiring an update to # the rubygems software. # # Metadata items have the following restrictions: # # * The metadata must be a Hash object # * All keys and values must be Strings # * Keys can be a maximum of 128 bytes and values can be a maximum of 1024 # bytes # * All strings must be UTF-8, no binary data is allowed # # You can use metadata to specify links to your gem's homepage, codebase, # documentation, wiki, mailing list, issue tracker and changelog. # # s.metadata = { # "bug_tracker_uri" => "https://example.com/user/bestgemever/issues", # "changelog_uri" => "https://example.com/user/bestgemever/CHANGELOG.md", # "documentation_uri" => "https://www.example.info/gems/bestgemever/0.0.1", # "homepage_uri" => "https://bestgemever.example.io", # "mailing_list_uri" => "https://groups.example.com/bestgemever", # "source_code_uri" => "https://example.com/user/bestgemever", # "wiki_uri" => "https://example.com/user/bestgemever/wiki" # } # # These links will be used on your gem's page on rubygems.org and must pass # validation against following regex. # # %r{\Ahttps?:\/\/([^\s:@]+:[^\s:@]@)?[A-Za-z\d\-]+(\.[A-Za-z\d\-]+)+\.?(:\d{1,5})?([\/?]\S)?\z} attr_accessor :metadata ###################################################################### # :section: Optional gemspec attributes ## # The path in the gem for executable scripts. Usually 'bin' # # Usage: # # spec.bindir = 'bin' attr_accessor :bindir ## # The certificate chain used to sign this gem. See Gem::Security for # details. attr_accessor :cert_chain ## # A message that gets displayed after the gem is installed. # # Usage: # # spec.post_install_message = "Thanks for installing!" attr_accessor :post_install_message ## # The platform this gem runs on. # # This is usually Gem::Platform::RUBY or Gem::Platform::CURRENT. # # Most gems contain pure Ruby code; they should simply leave the default # value in place. Some gems contain C (or other) code to be compiled into a # Ruby "extension". The gem should leave the default value in place unless # the code will only compile on a certain type of system. Some gems consist # of pre-compiled code ("binary gems"). It's especially important that they # set the platform attribute appropriately. A shortcut is to set the # platform to Gem::Platform::CURRENT, which will cause the gem builder to set # the platform to the appropriate value for the system on which the build is # being performed. # # If this attribute is set to a non-default value, it will be included in # the filename of the gem when it is built such as: # nokogiri-1.6.0-x86-mingw32.gem # # Usage: # # spec.platform = Gem::Platform.local def platform= platform if @original_platform.nil? or @original_platform == Gem::Platform::RUBY then @original_platform = platform end case platform when Gem::Platform::CURRENT then @new_platform = Gem::Platform.local @original_platform = @new_platform.to_s when Gem::Platform then @new_platform = platform # legacy constants when nil, Gem::Platform::RUBY then @new_platform = Gem::Platform::RUBY when 'mswin32' then # was Gem::Platform::WIN32 @new_platform = Gem::Platform.new 'x86-mswin32' when 'i586-linux' then # was Gem::Platform::LINUX_586 @new_platform = Gem::Platform.new 'x86-linux' when 'powerpc-darwin' then # was Gem::Platform::DARWIN @new_platform = Gem::Platform.new 'ppc-darwin' else @new_platform = Gem::Platform.new platform end @platform = @new_platform.to_s invalidate_memoized_attributes @new_platform end ## # Paths in the gem to add to <code>$LOAD_PATH</code> when this gem is # activated. #-- # See also #require_paths #++ # If you have an extension you do not need to add <code>"ext"</code> to the # require path, the extension build process will copy the extension files # into "lib" for you. # # The default value is <code>"lib"</code> # # Usage: # # # If all library files are in the root directory... # spec.require_paths = ['.'] def require_paths=(val) @require_paths = Array(val) end ## # The version of Ruby required by this gem attr_reader :required_ruby_version ## # The RubyGems version required by this gem attr_reader :required_rubygems_version ## # The version of RubyGems used to create this gem. # # Do not set this, it is set automatically when the gem is packaged. attr_accessor :rubygems_version ## # The key used to sign this gem. See Gem::Security for details. attr_accessor :signing_key ## # Adds a development dependency named +gem+ with +requirements+ to this # gem. # # Usage: # # spec.add_development_dependency 'example', '~> 1.1', '>= 1.1.4' # # Development dependencies aren't installed by default and aren't # activated when a gem is required. def add_development_dependency(gem, requirements) add_dependency_with_type(gem, :development, requirements) end ## # Adds a runtime dependency named +gem+ with +requirements+ to this gem. # # Usage: # # spec.add_runtime_dependency 'example', '~> 1.1', '>= 1.1.4' def add_runtime_dependency(gem, requirements) add_dependency_with_type(gem, :runtime, requirements) end ## # Executables included in the gem. # # For example, the rake gem has rake as an executable. You don’t specify the # full path (as in bin/rake); all application-style files are expected to be # found in bindir. These files must be executable Ruby files. Files that # use bash or other interpreters will not work. # # Executables included may only be ruby scripts, not scripts for other # languages or compiled binaries. # # Usage: # # spec.executables << 'rake' def executables @executables \|\|= [] end ## # Extensions to build when installing the gem, specifically the paths to # extconf.rb-style files used to compile extensions. # # These files will be run when the gem is installed, causing the C (or # whatever) code to be compiled on the user’s machine. # # Usage: # # spec.extensions << 'ext/rmagic/extconf.rb' # # See Gem::Ext::Builder for information about writing extensions for gems. def extensions @extensions \|\|= [] end ## # Extra files to add to RDoc such as README or doc/examples.txt # # When the user elects to generate the RDoc documentation for a gem (typically # at install time), all the library files are sent to RDoc for processing. # This option allows you to have some non-code files included for a more # complete set of documentation. # # Usage: # # spec.extra_rdoc_files = ['README', 'doc/user-guide.txt'] def extra_rdoc_files @extra_rdoc_files \|\|= [] end ## # The version of RubyGems that installed this gem. Returns # <code>Gem::Version.new(0)</code> for gems installed by versions earlier # than RubyGems 2.2.0. def installed_by_version # :nodoc: @installed_by_version \|\|= Gem::Version.new(0) end ## # Sets the version of RubyGems that installed this gem. See also # #installed_by_version. def installed_by_version= version # :nodoc: @installed_by_version = Gem::Version.new version end ## # Specifies the rdoc options to be used when generating API documentation. # # Usage: # # spec.rdoc_options << '--title' << 'Rake -- Ruby Make' << # '--main' << 'README' << # '--line-numbers' def rdoc_options @rdoc_options \|\|= [] end ## # The version of Ruby required by this gem. The ruby version can be # specified to the patch-level: # # $ ruby -v -e 'p Gem.ruby_version' # ruby 2.0.0p247 (2013-06-27 revision 41674) [x86_64-darwin12.4.0] # #<Gem::Version "2.0.0.247"> # # Because patch-level is taken into account, be very careful specifying using # `<=`: `<= 2.2.2` will not match any patch-level of 2.2.2 after the `p0` # release. It is much safer to specify `< 2.2.3` instead # # Usage: # # # This gem will work with 1.8.6 or greater... # spec.required_ruby_version = '>= 1.8.6' # # # Only with ruby 2.0.x # spec.required_ruby_version = '~> 2.0' # # # Only with ruby between 2.2.0 and 2.2.2 # spec.required_ruby_version = ['>= 2.2.0', '< 2.2.3'] def required_ruby_version= req @required_ruby_version = Gem::Requirement.create req end ## # The RubyGems version required by this gem def required_rubygems_version= req @required_rubygems_version = Gem::Requirement.create req end ## # Lists the external (to RubyGems) requirements that must be met for this gem # to work. It's simply information for the user. # # Usage: # # spec.requirements << 'libmagick, v6.0' # spec.requirements << 'A good graphics card' def requirements @requirements \|\|= [] end ## # A collection of unit test files. They will be loaded as unit tests when # the user requests a gem to be unit tested. # # Usage: # spec.test_files = Dir.glob('test/tc_.rb') # spec.test_files = ['tests/test-suite.rb'] def test_files= files # :nodoc: @test_files = Array files end ###################################################################### # :section: Specification internals ## # True when this gemspec has been activated. This attribute is not persisted. attr_accessor :activated alias :activated? :activated ## # Autorequire was used by old RubyGems to automatically require a file. # # Deprecated: It is neither supported nor functional. attr_accessor :autorequire # :nodoc: ## # Sets the default executable for this gem. # # Deprecated: You must now specify the executable name to Gem.bin_path. attr_writer :default_executable ## # Allows deinstallation of gems with legacy platforms. attr_writer :original_platform # :nodoc: ## # The rubyforge project this gem lives under. i.e. RubyGems' # rubyforge_project is "rubygems". # # This option is deprecated. attr_accessor :rubyforge_project ## # The Gem::Specification version of this gemspec. # # Do not set this, it is set automatically when the gem is packaged. attr_accessor :specification_version def self._all # :nodoc: unless defined?(@@all) && @@all then @@all = stubs.map(&:to_spec) if @@all.any?(&:nil?) # TODO: remove once we're happy raise "pid: #{$$} nil spec! included in #{stubs.inspect}" end # After a reset, make sure already loaded specs # are still marked as activated. specs = {} Gem.loaded_specs.each_value{\|s\| specs[s] = true} @@all.each{\|s\| s.activated = true if specs[s]} end @@all end def self._clear_load_cache # :nodoc: LOAD_CACHE.clear end def self.each_gemspec(dirs) # :nodoc: dirs.each do \|dir\| Dir[File.join(dir, ".gemspec")].each do \|path\| yield path.untaint end end end def self.gemspec_stubs_in dir, pattern Dir[File.join(dir, pattern)].map { \|path\| yield path }.select(&:valid?) end private_class_method :gemspec_stubs_in def self.default_stubs pattern base_dir = Gem.default_dir gems_dir = File.join base_dir, "gems" gemspec_stubs_in(default_specifications_dir, pattern) do \|path\| Gem::StubSpecification.default_gemspec_stub(path, base_dir, gems_dir) end end private_class_method :default_stubs def self.installed_stubs dirs, pattern map_stubs(dirs, pattern) do \|path, base_dir, gems_dir\| Gem::StubSpecification.gemspec_stub(path, base_dir, gems_dir) end end private_class_method :installed_stubs if [].respond_to? :flat_map def self.map_stubs(dirs, pattern) # :nodoc: dirs.flat_map { \|dir\| base_dir = File.dirname dir gems_dir = File.join base_dir, "gems" gemspec_stubs_in(dir, pattern) { \|path\| yield path, base_dir, gems_dir } } end else # FIXME: remove when 1.8 is dropped def self.map_stubs(dirs, pattern) # :nodoc: dirs.map { \|dir\| base_dir = File.dirname dir gems_dir = File.join base_dir, "gems" gemspec_stubs_in(dir, pattern) { \|path\| yield path, base_dir, gems_dir } }.flatten 1 end end private_class_method :map_stubs uniq_takes_a_block = false [1,2].uniq { uniq_takes_a_block = true } if uniq_takes_a_block def self.uniq_by(list, &block) # :nodoc: list.uniq(&block) end else # FIXME: remove when 1.8 is dropped def self.uniq_by(list) # :nodoc: values = {} list.each { \|item\| value = yield item values[value] \|\|= item } values.values end end private_class_method :uniq_by if [].respond_to? :sort_by! def self.sort_by! list, &block list.sort_by!(&block) end else # FIXME: remove when 1.8 is dropped def self.sort_by! list, &block list.replace list.sort_by(&block) end end private_class_method :sort_by! def self.each_spec(dirs) # :nodoc: each_gemspec(dirs) do \|path\| spec = self.load path yield spec if spec end end ## # Returns a Gem::StubSpecification for every installed gem def self.stubs @@stubs \|\|= begin pattern = ".gemspec" stubs = default_stubs(pattern).concat installed_stubs(dirs, pattern) stubs = uniq_by(stubs) { \|stub\| stub.full_name } _resort!(stubs) @@stubs_by_name = stubs.group_by(&:name) stubs end end EMPTY = [].freeze # :nodoc: ## # Returns a Gem::StubSpecification for installed gem named +name+ def self.stubs_for name if @@stubs @@stubs_by_name[name] \|\| [] else pattern = "#{name}-.gemspec" stubs = default_stubs(pattern) + installed_stubs(dirs, pattern) stubs = uniq_by(stubs) { \|stub\| stub.full_name }.group_by(&:name) stubs.each_value { \|v\| _resort!(v) } @@stubs_by_name.merge! stubs @@stubs_by_name[name] \|\|= EMPTY end end def self._resort!(specs) # :nodoc: specs.sort! { \|a, b\| names = a.name <=> b.name next names if names.nonzero? b.version <=> a.version } end ## # Loads the default specifications. It should be called only once. def self.load_defaults each_spec([default_specifications_dir]) do \|spec\| # #load returns nil if the spec is bad, so we just ignore # it at this stage Gem.register_default_spec(spec) end end ## # Adds +spec+ to the known specifications, keeping the collection # properly sorted. def self.add_spec spec warn "Gem::Specification.add_spec is deprecated and will be removed in RubyGems 3.0" unless Gem::Deprecate.skip # TODO: find all extraneous adds # puts # p :add_spec => [spec.full_name, caller.reject { \|s\| s =~ /minitest/ }] # TODO: flush the rest of the crap from the tests # raise "no dupes #{spec.full_name} in #{all_names.inspect}" if # _all.include? spec raise "nil spec!" unless spec # TODO: remove once we're happy with tests return if _all.include? spec _all << spec stubs << spec (@@stubs_by_name[spec.name] \|\|= []) << spec sort_by!(@@stubs_by_name[spec.name]) { \|s\| s.version } _resort!(_all) _resort!(stubs) end ## # Adds multiple specs to the known specifications. def self.add_specs specs warn "Gem::Specification.add_specs is deprecated and will be removed in RubyGems 3.0" unless Gem::Deprecate.skip raise "nil spec!" if specs.any?(&:nil?) # TODO: remove once we're happy # TODO: this is much more efficient, but we need the extra checks for now # _all.concat specs # _resort! Gem::Deprecate.skip_during do specs.each do \|spec\| # TODO: slow add_spec spec end end end ## # Returns all specifications. This method is discouraged from use. # You probably want to use one of the Enumerable methods instead. def self.all warn "NOTE: Specification.all called from #{caller.first}" unless Gem::Deprecate.skip _all end ## # Sets the known specs to +specs+. Not guaranteed to work for you in # the future. Use at your own risk. Caveat emptor. Doomy doom doom. # Etc etc. # #-- # Makes +specs+ the known specs # Listen, time is a river # Winter comes, code breaks # # -- wilsonb def self.all= specs raise "nil spec!" if specs.any?(&:nil?) # TODO: remove once we're happy @@stubs_by_name = specs.group_by(&:name) @@all = @@stubs = specs end ## # Return full names of all specs in sorted order. def self.all_names self._all.map(&:full_name) end ## # Return the list of all array-oriented instance variables. #-- # Not sure why we need to use so much stupid reflection in here... def self.array_attributes @@array_attributes.dup end ## # Return the list of all instance variables. #-- # Not sure why we need to use so much stupid reflection in here... def self.attribute_names @@attributes.dup end ## # Return the directories that Specification uses to find specs. def self.dirs @@dirs \|\|= Gem.path.collect { \|dir\| File.join dir.dup.untaint, "specifications" } end ## # Set the directories that Specification uses to find specs. Setting # this resets the list of known specs. def self.dirs= dirs self.reset @@dirs = Array(dirs).map { \|dir\| File.join dir, "specifications" } end extend Enumerable ## # Enumerate every known spec. See ::dirs= and ::add_spec to set the list of # specs. def self.each return enum_for(:each) unless block_given? self._all.each do \|x\| yield x end end ## # Returns every spec that matches +name+ and optional +requirements+. def self.find_all_by_name name, requirements requirements = Gem::Requirement.default if requirements.empty? # TODO: maybe try: find_all { \|s\| spec === dep } Gem::Dependency.new(name, requirements).matching_specs end ## # Returns every spec that has the given +full_name+ def self.find_all_by_full_name(full_name) stubs.select {\|s\| s.full_name == full_name }.map(&:to_spec) end ## # Find the best specification matching a +name+ and +requirements+. Raises # if the dependency doesn't resolve to a valid specification. def self.find_by_name name, requirements requirements = Gem::Requirement.default if requirements.empty? # TODO: maybe try: find { \|s\| spec === dep } Gem::Dependency.new(name, requirements).to_spec end ## # Return the best specification that contains the file matching +path+. def self.find_by_path path path = path.dup.freeze spec = @@spec_with_requirable_file[path] \|\|= (stubs.find { \|s\| next unless Gem::BundlerVersionFinder.compatible?(s) s.contains_requirable_file? path } \|\| NOT_FOUND) spec.to_spec end ## # Return the best specification that contains the file matching +path+ # amongst the specs that are not activated. def self.find_inactive_by_path path stub = stubs.find { \|s\| next if s.activated? next unless Gem::BundlerVersionFinder.compatible?(s) s.contains_requirable_file? path } stub && stub.to_spec end def self.find_active_stub_by_path path stub = @@active_stub_with_requirable_file[path] \|\|= (stubs.find { \|s\| s.activated? and s.contains_requirable_file? path } \|\| NOT_FOUND) stub.this end ## # Return currently unresolved specs that contain the file matching +path+. def self.find_in_unresolved path # TODO: do we need these?? Kill it specs = unresolved_deps.values.map { \|dep\| dep.to_specs }.flatten specs.find_all { \|spec\| spec.contains_requirable_file? path } end ## # Search through all unresolved deps and sub-dependencies and return # specs that contain the file matching +path+. def self.find_in_unresolved_tree path specs = unresolved_deps.values.map { \|dep\| dep.to_specs }.flatten specs.each do \|spec\| spec.traverse do \|from_spec, dep, to_spec, trail\| if to_spec.has_conflicts? \|\| to_spec.conficts_when_loaded_with?(trail) :next else return trail.reverse if to_spec.contains_requirable_file? path end end end [] end ## # Special loader for YAML files. When a Specification object is loaded # from a YAML file, it bypasses the normal Ruby object initialization # routine (#initialize). This method makes up for that and deals with # gems of different ages. # # +input+ can be anything that YAML.load() accepts: String or IO. def self.from_yaml(input) Gem.load_yaml input = normalize_yaml_input input spec = Gem::SafeYAML.safe_load input if spec && spec.class == FalseClass then raise Gem::EndOfYAMLException end unless Gem::Specification === spec then raise Gem::Exception, "YAML data doesn't evaluate to gem specification" end spec.specification_version \|\|= NONEXISTENT_SPECIFICATION_VERSION spec.reset_nil_attributes_to_default spec end ## # Return the latest specs, optionally including prerelease specs if # +prerelease+ is true. def self.latest_specs prerelease = false _latest_specs Gem::Specification._all, prerelease end def self._latest_specs specs, prerelease = false # :nodoc: result = Hash.new { \|h,k\| h[k] = {} } native = {} specs.reverse_each do \|spec\| next if spec.version.prerelease? unless prerelease native[spec.name] = spec.version if spec.platform == Gem::Platform::RUBY result[spec.name][spec.platform] = spec end result.map(&:last).map(&:values).flatten.reject { \|spec\| minimum = native[spec.name] minimum && spec.version < minimum }.sort_by{ \|tup\| tup.name } end ## # Loads Ruby format gemspec from +file+. def self.load file return unless file _spec = LOAD_CACHE[file] return _spec if _spec file = file.dup.untaint return unless File.file?(file) code = if defined? Encoding File.read file, :mode => 'r:UTF-8:-' else File.read file end code.untaint begin _spec = eval code, binding, file if Gem::Specification === _spec _spec.loaded_from = File.expand_path file.to_s LOAD_CACHE[file] = _spec return _spec end warn "[#{file}] isn't a Gem::Specification (#{_spec.class} instead)." rescue SignalException, SystemExit raise rescue SyntaxError, Exception => e warn "Invalid gemspec in [#{file}]: #{e}" end nil end ## # Specification attributes that must be non-nil def self.non_nil_attributes @@non_nil_attributes.dup end ## # Make sure the YAML specification is properly formatted with dashes def self.normalize_yaml_input(input) result = input.respond_to?(:read) ? input.read : input result = "--- " + result unless result =~ /\A--- / result = result.dup result.gsub!(/ !!null \n/, " \n") # date: 2011-04-26 00:00:00.000000000Z # date: 2011-04-26 00:00:00.000000000 Z result.gsub!(/^(date: \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\.\d+?)Z/, '\1 Z') result end ## # Return a list of all outdated local gem names. This method is HEAVY # as it must go fetch specifications from the server. # # Use outdated_and_latest_version if you wish to retrieve the latest remote # version as well. def self.outdated outdated_and_latest_version.map { \|local, _\| local.name } end ## # Enumerates the outdated local gems yielding the local specification and # the latest remote version. # # This method may take some time to return as it must check each local gem # against the server's index. def self.outdated_and_latest_version return enum_for __method__ unless block_given? # TODO: maybe we should switch to rubygems' version service? fetcher = Gem::SpecFetcher.fetcher latest_specs(true).each do \|local_spec\| dependency = Gem::Dependency.new local_spec.name, ">= #{local_spec.version}" remotes, = fetcher.search_for_dependency dependency remotes = remotes.map { \|n, _\| n.version } latest_remote = remotes.sort.last yield [local_spec, latest_remote] if latest_remote and local_spec.version < latest_remote end nil end ## # Removes +spec+ from the known specs. def self.remove_spec spec warn "Gem::Specification.remove_spec is deprecated and will be removed in RubyGems 3.0" unless Gem::Deprecate.skip _all.delete spec stubs.delete_if { \|s\| s.full_name == spec.full_name } (@@stubs_by_name[spec.name] \|\| []).delete_if { \|s\| s.full_name == spec.full_name } reset end ## # Is +name+ a required attribute? def self.required_attribute?(name) @@required_attributes.include? name.to_sym end ## # Required specification attributes def self.required_attributes @@required_attributes.dup end ## # Reset the list of known specs, running pre and post reset hooks # registered in Gem. def self.reset @@dirs = nil Gem.pre_reset_hooks.each { \|hook\| hook.call } @@all = nil @@stubs = nil @@stubs_by_name = {} @@spec_with_requirable_file = {} @@active_stub_with_requirable_file = {} _clear_load_cache unresolved = unresolved_deps unless unresolved.empty? then w = "W" + "ARN" warn "#{w}: Unresolved specs during Gem::Specification.reset:" unresolved.values.each do \|dep\| warn " #{dep}" end warn "#{w}: Clearing out unresolved specs." warn "Please report a bug if this causes problems." unresolved.clear end Gem.post_reset_hooks.each { \|hook\| hook.call } end # DOC: This method needs documented or nodoc'd def self.unresolved_deps @unresolved_deps \|\|= Hash.new { \|h, n\| h[n] = Gem::Dependency.new n } end ## # Load custom marshal format, re-initializing defaults as needed def self._load(str) array = Marshal.load str spec = Gem::Specification.new spec.instance_variable_set :@specification_version, array[1] current_version = CURRENT_SPECIFICATION_VERSION field_count = if spec.specification_version > current_version then spec.instance_variable_set :@specification_version, current_version MARSHAL_FIELDS[current_version] else MARSHAL_FIELDS[spec.specification_version] end if array.size < field_count then raise TypeError, "invalid Gem::Specification format #{array.inspect}" end # Cleanup any YAML::PrivateType. They only show up for an old bug # where nil => null, so just convert them to nil based on the type. array.map! { \|e\| e.kind_of?(YAML::PrivateType) ? nil : e } spec.instance_variable_set :@rubygems_version, array[0] # spec version spec.instance_variable_set :@name, array[2] spec.instance_variable_set :@version, array[3] spec.date = array[4] spec.instance_variable_set :@summary, array[5] spec.instance_variable_set :@required_ruby_version, array[6] spec.instance_variable_set :@required_rubygems_version, array[7] spec.instance_variable_set :@original_platform, array[8] spec.instance_variable_set :@dependencies, array[9] spec.instance_variable_set :@rubyforge_project, array[10] spec.instance_variable_set :@email, array[11] spec.instance_variable_set :@authors, array[12] spec.instance_variable_set :@description, array[13] spec.instance_variable_set :@homepage, array[14] spec.instance_variable_set :@has_rdoc, array[15] spec.instance_variable_set :@new_platform, array[16] spec.instance_variable_set :@platform, array[16].to_s spec.instance_variable_set :@license, array[17] spec.instance_variable_set :@metadata, array[18] spec.instance_variable_set :@loaded, false spec.instance_variable_set :@activated, false spec end def <=>(other) # :nodoc: sort_obj <=> other.sort_obj end def == other # :nodoc: self.class === other && name == other.name && version == other.version && platform == other.platform end ## # Dump only crucial instance variables. #-- # MAINTAIN ORDER! # (down with the man) def _dump(limit) Marshal.dump [ @rubygems_version, @specification_version, @name, @version, date, @summary, @required_ruby_version, @required_rubygems_version, @original_platform, @dependencies, @rubyforge_project, @email, @authors, @description, @homepage, true, # has_rdoc @new_platform, @licenses, @metadata ] end ## # Activate this spec, registering it as a loaded spec and adding # it's lib paths to $LOAD_PATH. Returns true if the spec was # activated, false if it was previously activated. Freaks out if # there are conflicts upon activation. def activate other = Gem.loaded_specs[self.name] if other then check_version_conflict other return false end raise_if_conflicts activate_dependencies add_self_to_load_path Gem.loaded_specs[self.name] = self @activated = true @loaded = true return true end ## # Activate all unambiguously resolved runtime dependencies of this # spec. Add any ambiguous dependencies to the unresolved list to be # resolved later, as needed. def activate_dependencies unresolved = Gem::Specification.unresolved_deps self.runtime_dependencies.each do \|spec_dep\| if loaded = Gem.loaded_specs[spec_dep.name] next if spec_dep.matches_spec? loaded msg = "can't satisfy '#{spec_dep}', already activated '#{loaded.full_name}'" e = Gem::LoadError.new msg e.name = spec_dep.name raise e end specs = spec_dep.to_specs if specs.size == 1 then specs.first.activate else name = spec_dep.name unresolved[name] = unresolved[name].merge spec_dep end end unresolved.delete self.name end ## # Abbreviate the spec for downloading. Abbreviated specs are only used for # searching, downloading and related activities and do not need deployment # specific information (e.g. list of files). So we abbreviate the spec, # making it much smaller for quicker downloads. def abbreviate self.files = [] self.test_files = [] self.rdoc_options = [] self.extra_rdoc_files = [] self.cert_chain = [] end ## # Sanitize the descriptive fields in the spec. Sometimes non-ASCII # characters will garble the site index. Non-ASCII characters will # be replaced by their XML entity equivalent. def sanitize self.summary = sanitize_string(summary) self.description = sanitize_string(description) self.post_install_message = sanitize_string(post_install_message) self.authors = authors.collect { \|a\| sanitize_string(a) } end ## # Sanitize a single string. def sanitize_string(string) return string unless string # HACK the #to_s is in here because RSpec has an Array of Arrays of # Strings for authors. Need a way to disallow bad values on gemspec # generation. (Probably won't happen.) string = string.to_s begin Builder::XChar.encode string rescue NameError, NoMethodError string.to_xs end end ## # Returns an array with bindir attached to each executable in the # +executables+ list def add_bindir(executables) return nil if executables.nil? if @bindir then Array(executables).map { \|e\| File.join(@bindir, e) } else executables end rescue return nil end ## # Adds a dependency on gem +dependency+ with type +type+ that requires # +requirements+. Valid types are currently <tt>:runtime</tt> and # <tt>:development</tt>. def add_dependency_with_type(dependency, type, requirements) requirements = if requirements.empty? then Gem::Requirement.default else requirements.flatten end unless dependency.respond_to?(:name) && dependency.respond_to?(:requirement) dependency = Gem::Dependency.new(dependency.to_s, requirements, type) end dependencies << dependency end private :add_dependency_with_type alias add_dependency add_runtime_dependency ## # Adds this spec's require paths to LOAD_PATH, in the proper location. def add_self_to_load_path return if default_gem? paths = full_require_paths # gem directories must come after -I and ENV['RUBYLIB'] insert_index = Gem.load_path_insert_index if insert_index then # gem directories must come after -I and ENV['RUBYLIB'] $LOAD_PATH.insert(insert_index, paths) else # we are probably testing in core, -I and RUBYLIB don't apply $LOAD_PATH.unshift(paths) end end ## # Singular reader for #authors. Returns the first author in the list def author val = authors and val.first end ## # The list of author names who wrote this gem. # # spec.authors = ['Chad Fowler', 'Jim Weirich', 'Rich Kilmer'] def authors @authors \|\|= [] end ## # Returns the full path to installed gem's bin directory. # # NOTE: do not confuse this with +bindir+, which is just 'bin', not # a full path. def bin_dir @bin_dir \|\|= File.join gem_dir, bindir # TODO: this is unfortunate end ## # Returns the full path to an executable named +name+ in this gem. def bin_file name File.join bin_dir, name end ## # Returns the build_args used to install the gem def build_args if File.exist? build_info_file build_info = File.readlines build_info_file build_info = build_info.map { \|x\| x.strip } build_info.delete "" build_info else [] end end ## # Builds extensions for this platform if the gem has extensions listed and # the gem.build_complete file is missing. def build_extensions # :nodoc: return if default_gem? return if extensions.empty? return if installed_by_version < Gem::Version.new('2.2.0.preview.2') return if File.exist? gem_build_complete_path return if !File.writable?(base_dir) return if !File.exist?(File.join(base_dir, 'extensions')) begin # We need to require things in $LOAD_PATH without looking for the # extension we are about to build. unresolved_deps = Gem::Specification.unresolved_deps.dup Gem::Specification.unresolved_deps.clear require 'rubygems/config_file' require 'rubygems/ext' require 'rubygems/user_interaction' ui = Gem::SilentUI.new Gem::DefaultUserInteraction.use_ui ui do builder = Gem::Ext::Builder.new self builder.build_extensions end ensure ui.close if ui Gem::Specification.unresolved_deps.replace unresolved_deps end end ## # Returns the full path to the build info directory def build_info_dir File.join base_dir, "build_info" end ## # Returns the full path to the file containing the build # information generated when the gem was installed def build_info_file File.join build_info_dir, "#{full_name}.info" end ## # Used to detect if the gem is bundled in older version of Ruby, but not # detectable as default gem (see BasicSpecification#default_gem?). def bundled_gem_in_old_ruby? !default_gem? && RUBY_VERSION < "2.0.0" && summary == "This #{name} is bundled with Ruby" end ## # Returns the full path to the cache directory containing this # spec's cached gem. def cache_dir @cache_dir \|\|= File.join base_dir, "cache" end ## # Returns the full path to the cached gem for this spec. def cache_file @cache_file \|\|= File.join cache_dir, "#{full_name}.gem" end ## # Return any possible conflicts against the currently loaded specs. def conflicts conflicts = {} self.runtime_dependencies.each { \|dep\| spec = Gem.loaded_specs[dep.name] if spec and not spec.satisfies_requirement? dep (conflicts[spec] \|\|= []) << dep end } env_req = Gem.env_requirement(name) (conflicts[self] \|\|= []) << env_req unless env_req.satisfied_by? version conflicts end ## # return true if there will be conflict when spec if loaded together with the list of specs. def conficts_when_loaded_with?(list_of_specs) # :nodoc: result = list_of_specs.any? { \|spec\| spec.dependencies.any? { \|dep\| dep.runtime? && (dep.name == name) && !satisfies_requirement?(dep) } } result end ## # Return true if there are possible conflicts against the currently loaded specs. def has_conflicts? return true unless Gem.env_requirement(name).satisfied_by?(version) self.dependencies.any? { \|dep\| if dep.runtime? then spec = Gem.loaded_specs[dep.name] spec and not spec.satisfies_requirement? dep else false end } end ## # The date this gem was created. Lazily defaults to the current UTC date. # # There is no need to set this in your gem specification. def date @date \|\|= TODAY end DateLike = Object.new # :nodoc: def DateLike.===(obj) # :nodoc: defined?(::Date) and Date === obj end DateTimeFormat = # :nodoc: /\A (\d{4})-(\d{2})-(\d{2}) (\s+ \d{2}:\d{2}:\d{2}\.\d+ \s (Z \| [-+]\d\d:\d\d) )? \Z/x ## # The date this gem was created # # DO NOT set this, it is set automatically when the gem is packaged. def date= date # We want to end up with a Time object with one-day resolution. # This is the cleanest, most-readable, faster-than-using-Date # way to do it. @date = case date when String then if DateTimeFormat =~ date then Time.utc($1.to_i, $2.to_i, $3.to_i) # Workaround for where the date format output from psych isn't # parsed as a Time object by syck and thus comes through as a # string. elsif /\A(\d{4})-(\d{2})-(\d{2}) \d{2}:\d{2}:\d{2}\.\d+?Z\z/ =~ date then Time.utc($1.to_i, $2.to_i, $3.to_i) else raise(Gem::InvalidSpecificationException, "invalid date format in specification: #{date.inspect}") end when Time, DateLike then Time.utc(date.year, date.month, date.day) else TODAY end end ## # The default executable for this gem. # # Deprecated: The name of the gem is assumed to be the name of the # executable now. See Gem.bin_path. def default_executable # :nodoc: if defined?(@default_executable) and @default_executable result = @default_executable elsif @executables and @executables.size == 1 result = Array(@executables).first else result = nil end result end ## # The default value for specification attribute +name+ def default_value name @@default_value[name] end ## # A list of Gem::Dependency objects this gem depends on. # # Use #add_dependency or #add_development_dependency to add dependencies to # a gem. def dependencies @dependencies \|\|= [] end ## # Return a list of all gems that have a dependency on this gemspec. The # list is structured with entries that conform to: # # [depending_gem, dependency, [list_of_gems_that_satisfy_dependency]] def dependent_gems out = [] Gem::Specification.each do \|spec\| spec.dependencies.each do \|dep\| if self.satisfies_requirement?(dep) then sats = [] find_all_satisfiers(dep) do \|sat\| sats << sat end out << [spec, dep, sats] end end end out end ## # Returns all specs that matches this spec's runtime dependencies. def dependent_specs runtime_dependencies.map { \|dep\| dep.to_specs }.flatten end ## # A detailed description of this gem. See also #summary def description= str @description = str.to_s end ## # List of dependencies that are used for development def development_dependencies dependencies.select { \|d\| d.type == :development } end ## # Returns the full path to this spec's documentation directory. If +type+ # is given it will be appended to the end. For example: # # spec.doc_dir # => "/path/to/gem_repo/doc/a-1" # # spec.doc_dir 'ri' # => "/path/to/gem_repo/doc/a-1/ri" def doc_dir type = nil @doc_dir \|\|= File.join base_dir, 'doc', full_name if type then File.join @doc_dir, type else @doc_dir end end def encode_with coder # :nodoc: mark_version coder.add 'name', @name coder.add 'version', @version platform = case @original_platform when nil, '' then 'ruby' when String then @original_platform else @original_platform.to_s end coder.add 'platform', platform attributes = @@attributes.map(&:to_s) - %w[name version platform] attributes.each do \|name\| coder.add name, instance_variable_get("@#{name}") end end def eql? other # :nodoc: self.class === other && same_attributes?(other) end ## # Singular accessor for #executables def executable val = executables and val.first end ## # Singular accessor for #executables def executable=o self.executables = [o] end ## # Sets executables to +value+, ensuring it is an array. Don't # use this, push onto the array instead. def executables= value # TODO: warn about setting instead of pushing @executables = Array(value) end ## # Sets extensions to +extensions+, ensuring it is an array. Don't # use this, push onto the array instead. def extensions= extensions # TODO: warn about setting instead of pushing @extensions = Array extensions end ## # Sets extra_rdoc_files to +files+, ensuring it is an array. Don't # use this, push onto the array instead. def extra_rdoc_files= files # TODO: warn about setting instead of pushing @extra_rdoc_files = Array files end ## # The default (generated) file name of the gem. See also #spec_name. # # spec.file_name # => "example-1.0.gem" def file_name "#{full_name}.gem" end ## # Sets files to +files+, ensuring it is an array. def files= files @files = Array files end ## # Finds all gems that satisfy +dep+ def find_all_satisfiers dep Gem::Specification.each do \|spec\| yield spec if spec.satisfies_requirement? dep end end private :find_all_satisfiers ## # Creates a duplicate spec without large blobs that aren't used at runtime. def for_cache spec = dup spec.files = nil spec.test_files = nil spec end def full_name @full_name \|\|= super end ## # Work around bundler removing my methods def gem_dir # :nodoc: super end def gems_dir # TODO: this logic seems terribly broken, but tests fail if just base_dir @gems_dir \|\|= File.join(loaded_from && base_dir \|\| Gem.dir, "gems") end ## # Deprecated and ignored, defaults to true. # # Formerly used to indicate this gem was RDoc-capable. def has_rdoc # :nodoc: true end ## # Deprecated and ignored. # # Formerly used to indicate this gem was RDoc-capable. def has_rdoc= ignored # :nodoc: @has_rdoc = true end alias :has_rdoc? :has_rdoc # :nodoc: ## # True if this gem has files in test_files def has_unit_tests? # :nodoc: not test_files.empty? end # :stopdoc: alias has_test_suite? has_unit_tests? # :startdoc: def hash # :nodoc: name.hash ^ version.hash end def init_with coder # :nodoc: @installed_by_version \|\|= nil yaml_initialize coder.tag, coder.map end eval <<-RB, binding, __FILE__, __LINE__ + 1 def set_nil_attributes_to_nil #{@@nil_attributes.map {\|key\| "@#{key} = nil" }.join "; "} end private :set_nil_attributes_to_nil def set_not_nil_attributes_to_default_values #{@@non_nil_attributes.map {\|key\| "@#{key} = #{INITIALIZE_CODE_FOR_DEFAULTS[key]}" }.join ";"} end private :set_not_nil_attributes_to_default_values RB ## # Specification constructor. Assigns the default values to the attributes # and yields itself for further initialization. Optionally takes +name+ and # +version+. def initialize name = nil, version = nil super() @gems_dir = nil @base_dir = nil @loaded = false @activated = false @loaded_from = nil @original_platform = nil @installed_by_version = nil set_nil_attributes_to_nil set_not_nil_attributes_to_default_values @new_platform = Gem::Platform::RUBY self.name = name if name self.version = version if version yield self if block_given? end ## # Duplicates array_attributes from +other_spec+ so state isn't shared. def initialize_copy other_spec self.class.array_attributes.each do \|name\| name = :"@#{name}" next unless other_spec.instance_variable_defined? name begin val = other_spec.instance_variable_get(name) if val then instance_variable_set name, val.dup elsif Gem.configuration.really_verbose warn "WARNING: #{full_name} has an invalid nil value for #{name}" end rescue TypeError e = Gem::FormatException.new \ "#{full_name} has an invalid value for #{name}" e.file_path = loaded_from raise e end end end def base_dir return Gem.dir unless loaded_from @base_dir \|\|= if default_gem? then File.dirname File.dirname File.dirname loaded_from else File.dirname File.dirname loaded_from end end ## # Expire memoized instance variables that can incorrectly generate, replace # or miss files due changes in certain attributes used to compute them. def invalidate_memoized_attributes @full_name = nil @cache_file = nil end private :invalidate_memoized_attributes def inspect # :nodoc: if $DEBUG super else "#{super[0..-2]} #{full_name}>" end end ## # Files in the Gem under one of the require_paths def lib_files @files.select do \|file\| require_paths.any? do \|path\| file.start_with? path end end end ## # Singular accessor for #licenses def license licenses.first end ## # Plural accessor for setting licenses # # See #license= for details def licenses @licenses \|\|= [] end def internal_init # :nodoc: super @bin_dir = nil @cache_dir = nil @cache_file = nil @doc_dir = nil @ri_dir = nil @spec_dir = nil @spec_file = nil end ## # Sets the rubygems_version to the current RubyGems version. def mark_version @rubygems_version = Gem::VERSION end ## # Warn about unknown attributes while loading a spec. def method_missing(sym, a, &b) # :nodoc: if @specification_version > CURRENT_SPECIFICATION_VERSION and sym.to_s =~ /=$/ then warn "ignoring #{sym} loading #{full_name}" if $DEBUG else super end end ## # Is this specification missing its extensions? When this returns true you # probably want to build_extensions def missing_extensions? return false if default_gem? return false if extensions.empty? return false if installed_by_version < Gem::Version.new('2.2.0.preview.2') return false if File.exist? gem_build_complete_path true end ## # Normalize the list of files so that: # All file lists have redundancies removed. # * Files referenced in the extra_rdoc_files are included in the package # file list. def normalize if defined?(@extra_rdoc_files) and @extra_rdoc_files then @extra_rdoc_files.uniq! @files \|\|= [] @files.concat(@extra_rdoc_files) end @files = @files.uniq if @files @extensions = @extensions.uniq if @extensions @test_files = @test_files.uniq if @test_files @executables = @executables.uniq if @executables @extra_rdoc_files = @extra_rdoc_files.uniq if @extra_rdoc_files end ## # Return a NameTuple that represents this Specification def name_tuple Gem::NameTuple.new name, version, original_platform end ## # Returns the full name (name-version) of this gemspec using the original # platform. For use with legacy gems. def original_name # :nodoc: if platform == Gem::Platform::RUBY or platform.nil? then "#{@name}-#{@version}" else "#{@name}-#{@version}-#{@original_platform}" end end ## # Cruft. Use +platform+. def original_platform # :nodoc: @original_platform \|\|= platform end ## # The platform this gem runs on. See Gem::Platform for details. def platform @new_platform \|\|= Gem::Platform::RUBY end def pretty_print(q) # :nodoc: q.group 2, 'Gem::Specification.new do \|s\|', 'end' do q.breakable attributes = @@attributes - [:name, :version] attributes.unshift :installed_by_version attributes.unshift :version attributes.unshift :name attributes.each do \|attr_name\| current_value = self.send attr_name if current_value != default_value(attr_name) or self.class.required_attribute? attr_name then q.text "s.#{attr_name} = " if attr_name == :date then current_value = current_value.utc q.text "Time.utc(#{current_value.year}, #{current_value.month}, #{current_value.day})" else q.pp current_value end q.breakable end end end end ## # Raise an exception if the version of this spec conflicts with the one # that is already loaded (+other+) def check_version_conflict other # :nodoc: return if self.version == other.version # This gem is already loaded. If the currently loaded gem is not in the # list of candidate gems, then we have a version conflict. msg = "can't activate #{full_name}, already activated #{other.full_name}" e = Gem::LoadError.new msg e.name = self.name # TODO: e.requirement = dep.requirement raise e end private :check_version_conflict ## # Check the spec for possible conflicts and freak out if there are any. def raise_if_conflicts # :nodoc: if has_conflicts? then raise Gem::ConflictError.new self, conflicts end end ## # Sets rdoc_options to +value+, ensuring it is an array. Don't # use this, push onto the array instead. def rdoc_options= options # TODO: warn about setting instead of pushing @rdoc_options = Array options end ## # Singular accessor for #require_paths def require_path val = require_paths and val.first end ## # Singular accessor for #require_paths def require_path= path self.require_paths = Array(path) end ## # Set requirements to +req+, ensuring it is an array. Don't # use this, push onto the array instead. def requirements= req # TODO: warn about setting instead of pushing @requirements = Array req end def respond_to_missing? m, include_private = false # :nodoc: false end ## # Returns the full path to this spec's ri directory. def ri_dir @ri_dir \|\|= File.join base_dir, 'ri', full_name end ## # Return a string containing a Ruby code representation of the given # object. def ruby_code(obj) case obj when String then obj.dump + ".freeze" when Array then '[' + obj.map { \|x\| ruby_code x }.join(", ") + ']' when Hash then seg = obj.keys.sort.map { \|k\| "#{k.to_s.dump} => #{obj[k].to_s.dump}" } "{ #{seg.join(', ')} }" when Gem::Version then obj.to_s.dump when DateLike then obj.strftime('%Y-%m-%d').dump when Time then obj.strftime('%Y-%m-%d').dump when Numeric then obj.inspect when true, false, nil then obj.inspect when Gem::Platform then "Gem::Platform.new(#{obj.to_a.inspect})" when Gem::Requirement then list = obj.as_list "Gem::Requirement.new(#{ruby_code(list.size == 1 ? obj.to_s : list)})" else raise Gem::Exception, "ruby_code case not handled: #{obj.class}" end end private :ruby_code ## # List of dependencies that will automatically be activated at runtime. def runtime_dependencies dependencies.select(&:runtime?) end ## # True if this gem has the same attributes as +other+. def same_attributes? spec @@attributes.all? { \|name, default\| self.send(name) == spec.send(name) } end private :same_attributes? ## # Checks if this specification meets the requirement of +dependency+. def satisfies_requirement? dependency return @name == dependency.name && dependency.requirement.satisfied_by?(@version) end ## # Returns an object you can use to sort specifications in #sort_by. def sort_obj [@name, @version, @new_platform == Gem::Platform::RUBY ? -1 : 1] end ## # Used by Gem::Resolver to order Gem::Specification objects def source # :nodoc: Gem::Source::Installed.new end ## # Returns the full path to the directory containing this spec's # gemspec file. eg: /usr/local/lib/ruby/gems/1.8/specifications def spec_dir @spec_dir \|\|= File.join base_dir, "specifications" end ## # Returns the full path to this spec's gemspec file. # eg: /usr/local/lib/ruby/gems/1.8/specifications/mygem-1.0.gemspec def spec_file @spec_file \|\|= File.join spec_dir, "#{full_name}.gemspec" end ## # The default name of the gemspec. See also #file_name # # spec.spec_name # => "example-1.0.gemspec" def spec_name "#{full_name}.gemspec" end ## # A short summary of this gem's description. def summary= str @summary = str.to_s.strip. gsub(/(\w-)\n[ \t](\w)/, '\1\2').gsub(/\n[ \t]/, " ") # so. weird. end ## # Singular accessor for #test_files def test_file # :nodoc: val = test_files and val.first end ## # Singular mutator for #test_files def test_file= file # :nodoc: self.test_files = [file] end ## # Test files included in this gem. You cannot append to this accessor, you # must assign to it. def test_files # :nodoc: # Handle the possibility that we have @test_suite_file but not # @test_files. This will happen when an old gem is loaded via # YAML. if defined? @test_suite_file then @test_files = [@test_suite_file].flatten @test_suite_file = nil end if defined?(@test_files) and @test_files then @test_files else @test_files = [] end end ## # Returns a Ruby code representation of this specification, such that it can # be eval'ed and reconstruct the same specification later. Attributes that # still have their default values are omitted. def to_ruby mark_version result = [] result << "# -- encoding: utf-8 --" result << "#{Gem::StubSpecification::PREFIX}#{name} #{version} #{platform} #{raw_require_paths.join("\0")}" result << "#{Gem::StubSpecification::PREFIX}#{extensions.join "\0"}" unless extensions.empty? result << nil result << "Gem::Specification.new do \|s\|" result << " s.name = #{ruby_code name}" result << " s.version = #{ruby_code version}" unless platform.nil? or platform == Gem::Platform::RUBY then result << " s.platform = #{ruby_code original_platform}" end result << "" result << " s.required_rubygems_version = #{ruby_code required_rubygems_version} if s.respond_to? :required_rubygems_version=" if metadata and !metadata.empty? result << " s.metadata = #{ruby_code metadata} if s.respond_to? :metadata=" end result << " s.require_paths = #{ruby_code raw_require_paths}" handled = [ :dependencies, :name, :platform, :require_paths, :required_rubygems_version, :specification_version, :version, :has_rdoc, :default_executable, :metadata ] @@attributes.each do \|attr_name\| next if handled.include? attr_name current_value = self.send(attr_name) if current_value != default_value(attr_name) or self.class.required_attribute? attr_name then result << " s.#{attr_name} = #{ruby_code current_value}" end end if @installed_by_version then result << nil result << " s.installed_by_version = \"#{Gem::VERSION}\" if s.respond_to? :installed_by_version" end unless dependencies.empty? then result << nil result << " if s.respond_to? :specification_version then" result << " s.specification_version = #{specification_version}" result << nil result << " if Gem::Version.new(Gem::VERSION) >= Gem::Version.new('1.2.0') then" dependencies.each do \|dep\| req = dep.requirements_list.inspect dep.instance_variable_set :@type, :runtime if dep.type.nil? # HACK result << " s.add_#{dep.type}_dependency(%q<#{dep.name}>.freeze, #{req})" end result << " else" dependencies.each do \|dep\| version_reqs_param = dep.requirements_list.inspect result << " s.add_dependency(%q<#{dep.name}>.freeze, #{version_reqs_param})" end result << ' end' result << " else" dependencies.each do \|dep\| version_reqs_param = dep.requirements_list.inspect result << " s.add_dependency(%q<#{dep.name}>.freeze, #{version_reqs_param})" end result << " end" end result << "end" result << nil result.join "\n" end ## # Returns a Ruby lighter-weight code representation of this specification, # used for indexing only. # # See #to_ruby. def to_ruby_for_cache for_cache.to_ruby end def to_s # :nodoc: "#<Gem::Specification name=#{@name} version=#{@version}>" end ## # Returns self def to_spec self end def to_yaml(opts = {}) # :nodoc: if (YAML.const_defined?(:ENGINE) && !YAML::ENGINE.syck?) \|\| (defined?(Psych) && YAML == Psych) then # Because the user can switch the YAML engine behind our # back, we have to check again here to make sure that our # psych code was properly loaded, and load it if not. unless Gem.const_defined?(:NoAliasYAMLTree) require 'rubygems/psych_tree' end builder = Gem::NoAliasYAMLTree.create builder << self ast = builder.tree io = StringIO.new io.set_encoding Encoding::UTF_8 if Object.const_defined? :Encoding Psych::Visitors::Emitter.new(io).accept(ast) io.string.gsub(/ !!null \n/, " \n") else YAML.quick_emit object_id, opts do \|out\| out.map taguri, to_yaml_style do \|map\| encode_with map end end end end ## # Recursively walk dependencies of this spec, executing the +block+ for each # hop. def traverse trail = [], visited = {}, &block trail.push(self) begin dependencies.each do \|dep\| next unless dep.runtime? dep.to_specs.each do \|dep_spec\| next if visited.has_key?(dep_spec) visited[dep_spec] = true trail.push(dep_spec) begin result = block[self, dep, dep_spec, trail] ensure trail.pop end unless result == :next spec_name = dep_spec.name dep_spec.traverse(trail, visited, &block) unless trail.any? { \|s\| s.name == spec_name } end end end ensure trail.pop end end ## # Checks that the specification contains all required fields, and does a # very basic sanity check. # # Raises InvalidSpecificationException if the spec does not pass the # checks.. def validate packaging = true @warnings = 0 require 'rubygems/user_interaction' extend Gem::UserInteraction normalize nil_attributes = self.class.non_nil_attributes.find_all do \|attrname\| instance_variable_get("@#{attrname}").nil? end unless nil_attributes.empty? then raise Gem::InvalidSpecificationException, "#{nil_attributes.join ', '} must not be nil" end if packaging and rubygems_version != Gem::VERSION then raise Gem::InvalidSpecificationException, "expected RubyGems version #{Gem::VERSION}, was #{rubygems_version}" end @@required_attributes.each do \|symbol\| unless self.send symbol then raise Gem::InvalidSpecificationException, "missing value for attribute #{symbol}" end end if !name.is_a?(String) then raise Gem::InvalidSpecificationException, "invalid value for attribute name: \"#{name.inspect}\" must be a string" elsif name !~ /[a-zA-Z]/ then raise Gem::InvalidSpecificationException, "invalid value for attribute name: #{name.dump} must include at least one letter" elsif name !~ VALID_NAME_PATTERN then raise Gem::InvalidSpecificationException, "invalid value for attribute name: #{name.dump} can only include letters, numbers, dashes, and underscores" end if raw_require_paths.empty? then raise Gem::InvalidSpecificationException, 'specification must have at least one require_path' end @files.delete_if { \|x\| File.directory?(x) && !File.symlink?(x) } @test_files.delete_if { \|x\| File.directory?(x) && !File.symlink?(x) } @executables.delete_if { \|x\| File.directory?(File.join(@bindir, x)) } @extra_rdoc_files.delete_if { \|x\| File.directory?(x) && !File.symlink?(x) } @extensions.delete_if { \|x\| File.directory?(x) && !File.symlink?(x) } non_files = files.reject { \|x\| File.file?(x) \|\| File.symlink?(x) } unless not packaging or non_files.empty? then raise Gem::InvalidSpecificationException, "[\"#{non_files.join "\", \""}\"] are not files" end if files.include? file_name then raise Gem::InvalidSpecificationException, "#{full_name} contains itself (#{file_name}), check your files list" end unless specification_version.is_a?(Integer) raise Gem::InvalidSpecificationException, 'specification_version must be an Integer (did you mean version?)' end case platform when Gem::Platform, Gem::Platform::RUBY then # ok else raise Gem::InvalidSpecificationException, "invalid platform #{platform.inspect}, see Gem::Platform" end self.class.array_attributes.each do \|field\| val = self.send field klass = case field when :dependencies Gem::Dependency else String end unless Array === val and val.all? { \|x\| x.kind_of?(klass) } then raise(Gem::InvalidSpecificationException, "#{field} must be an Array of #{klass}") end end [:authors].each do \|field\| val = self.send field raise Gem::InvalidSpecificationException, "#{field} may not be empty" if val.empty? end unless Hash === metadata raise Gem::InvalidSpecificationException, 'metadata must be a hash' end validate_metadata licenses.each { \|license\| if license.length > 64 raise Gem::InvalidSpecificationException, "each license must be 64 characters or less" end if !Gem::Licenses.match?(license) suggestions = Gem::Licenses.suggestions(license) message = <<-warning license value '#{license}' is invalid. Use a license identifier from http://spdx.org/licenses or '#{Gem::Licenses::NONSTANDARD}' for a nonstandard license. warning message += "Did you mean #{suggestions.map { \|s\| "'#{s}'"}.join(', ')}?\n" unless suggestions.nil? warning(message) end } warning <<-warning if licenses.empty? licenses is empty, but is recommended. Use a license identifier from http://spdx.org/licenses or '#{Gem::Licenses::NONSTANDARD}' for a nonstandard license. warning validate_permissions # reject lazy developers: lazy = '"FIxxxXME" or "TOxxxDO"'.gsub(/xxx/, '') unless authors.grep(/FI XME\|TO DO/x).empty? then raise Gem::InvalidSpecificationException, "#{lazy} is not an author" end unless Array(email).grep(/FI XME\|TO DO/x).empty? then raise Gem::InvalidSpecificationException, "#{lazy} is not an email" end if description =~ /FI XME\|TO DO/x then raise Gem::InvalidSpecificationException, "#{lazy} is not a description" end if summary =~ /FI XME\|TO DO/x then raise Gem::InvalidSpecificationException, "#{lazy} is not a summary" end # Make sure a homepage is valid HTTP/HTTPS URI if homepage and not homepage.empty? begin homepage_uri = URI.parse(homepage) unless [URI::HTTP, URI::HTTPS].member? homepage_uri.class raise Gem::InvalidSpecificationException, "\"#{homepage}\" is not a valid HTTP URI" end rescue URI::InvalidURIError raise Gem::InvalidSpecificationException, "\"#{homepage}\" is not a valid HTTP URI" end end # Warnings %w[author homepage summary files].each do \|attribute\| value = self.send attribute warning "no #{attribute} specified" if value.nil? or value.empty? end if description == summary then warning 'description and summary are identical' end # TODO: raise at some given date warning "deprecated autorequire specified" if autorequire executables.each do \|executable\| executable_path = File.join(bindir, executable) shebang = File.read(executable_path, 2) == '#!' warning "#{executable_path} is missing #! line" unless shebang end files.each do \|file\| next unless File.symlink?(file) warning "#{file} is a symlink, which is not supported on all platforms" end validate_dependencies true ensure if $! or @warnings > 0 then alert_warning "See http://guides.rubygems.org/specification-reference/ for help" end end def validate_metadata url_validation_regex = %r{\Ahttps?:\/\/([^\s:@]+:[^\s:@]@)?[A-Za-z\d\-]+(\.[A-Za-z\d\-]+)+\.?(:\d{1,5})?([\/?]\S)?\z} link_keys = %w( bug_tracker_uri changelog_uri documentation_uri homepage_uri mailing_list_uri source_code_uri wiki_uri ) metadata.each do\|key, value\| if !key.kind_of?(String) raise Gem::InvalidSpecificationException, "metadata keys must be a String" end if key.size > 128 raise Gem::InvalidSpecificationException, "metadata key too large (#{key.size} > 128)" end if !value.kind_of?(String) raise Gem::InvalidSpecificationException, "metadata values must be a String" end if value.size > 1024 raise Gem::InvalidSpecificationException, "metadata value too large (#{value.size} > 1024)" end if link_keys.include? key if value !~ url_validation_regex raise Gem::InvalidSpecificationException, "metadata['#{key}'] has invalid link: #{value.inspect}" end end end end ## # Checks that dependencies use requirements as we recommend. Warnings are # issued when dependencies are open-ended or overly strict for semantic # versioning. def validate_dependencies # :nodoc: # NOTE: see REFACTOR note in Gem::Dependency about types - this might be brittle seen = Gem::Dependency::TYPES.inject({}) { \|types, type\| types.merge({ type => {}}) } error_messages = [] warning_messages = [] dependencies.each do \|dep\| if prev = seen[dep.type][dep.name] then error_messages << <<-MESSAGE duplicate dependency on #{dep}, (#{prev.requirement}) use: add_#{dep.type}_dependency '#{dep.name}', '#{dep.requirement}', '#{prev.requirement}' MESSAGE end seen[dep.type][dep.name] = dep prerelease_dep = dep.requirements_list.any? do \|req\| Gem::Requirement.new(req).prerelease? end warning_messages << "prerelease dependency on #{dep} is not recommended" if prerelease_dep && !version.prerelease? overly_strict = dep.requirement.requirements.length == 1 && dep.requirement.requirements.any? do \|op, version\| op == '~>' and not version.prerelease? and version.segments.length > 2 and version.segments.first != 0 end if overly_strict then _, dep_version = dep.requirement.requirements.first base = dep_version.segments.first 2 warning_messages << <<-WARNING pessimistic dependency on #{dep} may be overly strict if #{dep.name} is semantically versioned, use: add_#{dep.type}_dependency '#{dep.name}', '~> #{base.join '.'}', '>= #{dep_version}' WARNING end open_ended = dep.requirement.requirements.all? do \|op, version\| not version.prerelease? and (op == '>' or op == '>=') end if open_ended then op, dep_version = dep.requirement.requirements.first base = dep_version.segments.first 2 bugfix = if op == '>' then ", '> #{dep_version}'" elsif op == '>=' and base != dep_version.segments then ", '>= #{dep_version}'" end warning_messages << <<-WARNING open-ended dependency on #{dep} is not recommended if #{dep.name} is semantically versioned, use: add_#{dep.type}_dependency '#{dep.name}', '~> #{base.join '.'}'#{bugfix} WARNING end end if error_messages.any? raise Gem::InvalidSpecificationException, error_messages.join end if warning_messages.any? warning_messages.each { \|warning_message\| warning warning_message } end end ## # Checks to see if the files to be packaged are world-readable. def validate_permissions return if Gem.win_platform? files.each do \|file\| next unless File.file?(file) next if File.stat(file).mode & 0444 == 0444 warning "#{file} is not world-readable" end executables.each do \|name\| exec = File.join @bindir, name next unless File.file?(exec) next if File.stat(exec).executable? warning "#{exec} is not executable" end end ## # Set the version to +version+, potentially also setting # required_rubygems_version if +version+ indicates it is a # prerelease. def version= version @version = Gem::Version.create(version) self.required_rubygems_version = '> 1.3.1' if @version.prerelease? invalidate_memoized_attributes return @version end def stubbed? false end def yaml_initialize(tag, vals) # :nodoc: vals.each do \|ivar, val\| case ivar when "date" # Force Date to go through the extra coerce logic in date= self.date = val.untaint else instance_variable_set "@#{ivar}", val.untaint end end @original_platform = @platform # for backwards compatibility self.platform = Gem::Platform.new @platform end ## # Reset nil attributes to their default values to make the spec valid def reset_nil_attributes_to_default nil_attributes = self.class.non_nil_attributes.find_all do \|name\| !instance_variable_defined?("@#{name}") \|\| instance_variable_get("@#{name}").nil? end nil_attributes.each do \|attribute\| default = self.default_value attribute value = case default when Time, Numeric, Symbol, true, false, nil then default else default.dup end instance_variable_set "@#{attribute}", value end @installed_by_version \|\|= nil end def warning statement # :nodoc: @warnings += 1 alert_warning statement end def raw_require_paths # :nodoc: @require_paths end extend Gem::Deprecate # TODO: # deprecate :has_rdoc, :none, 2011, 10 # deprecate :has_rdoc?, :none, 2011, 10 # deprecate :has_rdoc=, :none, 2011, 10 # deprecate :default_executable, :none, 2011, 10 # deprecate :default_executable=, :none, 2011, 10 # deprecate :file_name, :cache_file, 2011, 10 # deprecate :full_gem_path, :cache_file, 2011, 10 end # DOC: What is this and why is it here, randomly, at the end of this file? Gem.clear_paths Back

Edit File : specification.rb | Size : 82.56 KB

# -*- coding: utf-8 -*-
# frozen_string_literal: true
#--
# Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
# All rights reserved.
# See LICENSE.txt for permissions.
#++

require 'rubygems/version'
require 'rubygems/requirement'
require 'rubygems/platform'
require 'rubygems/deprecate'
require 'rubygems/basic_specification'
require 'rubygems/stub_specification'
require 'rubygems/util/list'
require 'stringio'
require 'uri'

##
# The Specification class contains the information for a Gem.  Typically
# defined in a .gemspec file or a Rakefile, and looks like this:
#
#   Gem::Specification.new do |s|
#     s.name        = 'example'
#     s.version     = '0.1.0'
#     s.licenses    = ['MIT']
#     s.summary     = "This is an example!"
#     s.description = "Much longer explanation of the example!"
#     s.authors     = ["Ruby Coder"]
#     s.email       = 'rubycoder@example.com'
#     s.files       = ["lib/example.rb"]
#     s.homepage    = 'https://rubygems.org/gems/example'
#     s.metadata    = { "source_code_uri" => "https://github.com/example/example" }
#   end
#
# Starting in RubyGems 2.0, a Specification can hold arbitrary
# metadata.  See #metadata for restrictions on the format and size of metadata
# items you may add to a specification.

class Gem::Specification < Gem::BasicSpecification

# REFACTOR: Consider breaking out this version stuff into a separate
  # module. There's enough special stuff around it that it may justify
  # a separate class.

##
  # The version number of a specification that does not specify one
  # (i.e. RubyGems 0.7 or earlier).

NONEXISTENT_SPECIFICATION_VERSION = -1

##
  # The specification version applied to any new Specification instances
  # created.  This should be bumped whenever something in the spec format
  # changes.
  #
  # Specification Version History:
  #
  #   spec   ruby
  #    ver    ver yyyy-mm-dd description
  #     -1 <0.8.0            pre-spec-version-history
  #      1  0.8.0 2004-08-01 Deprecated "test_suite_file" for "test_files"
  #                          "test_file=x" is a shortcut for "test_files=[x]"
  #      2  0.9.5 2007-10-01 Added "required_rubygems_version"
  #                          Now forward-compatible with future versions
  #      3  1.3.2 2009-01-03 Added Fixnum validation to specification_version
  #      4  1.9.0 2011-06-07 Added metadata
  #--
  # When updating this number, be sure to also update #to_ruby.
  #
  # NOTE RubyGems < 1.2 cannot load specification versions > 2.

CURRENT_SPECIFICATION_VERSION = 4 # :nodoc:

##
  # An informal list of changes to the specification.  The highest-valued
  # key should be equal to the CURRENT_SPECIFICATION_VERSION.

SPECIFICATION_VERSION_HISTORY = { # :nodoc:
    -1 => ['(RubyGems versions up to and including 0.7 did not have versioned specifications)'],
    1  => [
      'Deprecated "test_suite_file" in favor of the new, but equivalent, "test_files"',
      '"test_file=x" is a shortcut for "test_files=[x]"'
    ],
    2  => [
      'Added "required_rubygems_version"',
      'Now forward-compatible with future versions',
    ],
    3 => [
       'Added Fixnum validation to the specification_version'
    ],
    4 => [
      'Added sandboxed freeform metadata to the specification version.'
    ]
  }

MARSHAL_FIELDS = { # :nodoc:
    -1 => 16,
     1 => 16,
     2 => 16,
     3 => 17,
     4 => 18,
  }

today = Time.now.utc
  TODAY = Time.utc(today.year, today.month, today.day) # :nodoc:

LOAD_CACHE = {} # :nodoc:

private_constant :LOAD_CACHE if defined? private_constant

VALID_NAME_PATTERN = /\A[a-zA-Z0-9\.\-\_]+\z/ # :nodoc:

# :startdoc:

##
  # List of attribute names: [:name, :version, ...]

@@required_attributes = [:rubygems_version,
                           :specification_version,
                           :name,
                           :version,
                           :date,
                           :summary,
                           :require_paths]

##
  # Map of attribute names to default values.

@@default_value = {
    :authors                   => [],
    :autorequire               => nil,
    :bindir                    => 'bin',
    :cert_chain                => [],
    :date                      => TODAY,
    :dependencies              => [],
    :description               => nil,
    :email                     => nil,
    :executables               => [],
    :extensions                => [],
    :extra_rdoc_files          => [],
    :files                     => [],
    :homepage                  => nil,
    :licenses                  => [],
    :metadata                  => {},
    :name                      => nil,
    :platform                  => Gem::Platform::RUBY,
    :post_install_message      => nil,
    :rdoc_options              => [],
    :require_paths             => ['lib'],
    :required_ruby_version     => Gem::Requirement.default,
    :required_rubygems_version => Gem::Requirement.default,
    :requirements              => [],
    :rubyforge_project         => nil,
    :rubygems_version          => Gem::VERSION,
    :signing_key               => nil,
    :specification_version     => CURRENT_SPECIFICATION_VERSION,
    :summary                   => nil,
    :test_files                => [],
    :version                   => nil,
  }.freeze

INITIALIZE_CODE_FOR_DEFAULTS = { } # :nodoc:

@@default_value.each do |k,v|
    INITIALIZE_CODE_FOR_DEFAULTS[k] = case v
    when [], {}, true, false, nil, Numeric, Symbol
      v.inspect
    when String
      v.dump
    when Numeric
       "default_value(:#{k})"
    else
       "default_value(:#{k}).dup"
    end
  end

@@attributes = @@default_value.keys.sort_by { |s| s.to_s }
  @@array_attributes = @@default_value.reject { |k,v| v != [] }.keys
  @@nil_attributes, @@non_nil_attributes = @@default_value.keys.partition { |k|
    @@default_value[k].nil?
  }

@@stubs_by_name = {}

# Sentinel object to represent "not found" stubs
  NOT_FOUND = Struct.new(:to_spec, :this).new # :nodoc:
  @@spec_with_requirable_file          = {}
  @@active_stub_with_requirable_file   = {}

######################################################################
  # :section: Required gemspec attributes

##
  # This gem's name.
  #
  # Usage:
  #
  #   spec.name = 'rake'

attr_accessor :name

##
  # This gem's version.
  #
  # The version string can contain numbers and periods, such as +1.0.0+.
  # A gem is a 'prerelease' gem if the version has a letter in it, such as
  # +1.0.0.pre+.
  #
  # Usage:
  #
  #   spec.version = '0.4.1'

attr_reader :version

##
  # A short summary of this gem's description.  Displayed in `gem list -d`.
  #
  # The #description should be more detailed than the summary.
  #
  # Usage:
  #
  #   spec.summary = "This is a small summary of my gem"

attr_reader :summary

##
  # Files included in this gem.  You cannot append to this accessor, you must
  # assign to it.
  #
  # Only add files you can require to this list, not directories, etc.
  #
  # Directories are automatically stripped from this list when building a gem,
  # other non-files cause an error.
  #
  # Usage:
  #
  #   require 'rake'
  #   spec.files = FileList['lib/**/*.rb',
  #                         'bin/*',
  #                         '[A-Z]*',
  #                         'test/**/*'].to_a
  #
  #   # or without Rake...
  #   spec.files = Dir['lib/**/*.rb'] + Dir['bin/*']
  #   spec.files += Dir['[A-Z]*'] + Dir['test/**/*']
  #   spec.files.reject! { |fn| fn.include? "CVS" }

def files
    # DO NOT CHANGE TO ||= ! This is not a normal accessor. (yes, it sucks)
    # DOC: Why isn't it normal? Why does it suck? How can we fix this?
    @files = [@files,
              @test_files,
              add_bindir(@executables),
              @extra_rdoc_files,
              @extensions,
             ].flatten.compact.uniq.sort
  end

######################################################################
  # :section: Recommended gemspec attributes

##
  # Singular writer for #authors
  #
  # Usage:
  #
  #   spec.author = 'John Jones'

def author= o
    self.authors = [o]
  end

##
  # Sets the list of authors, ensuring it is an array.
  #
  # Usage:
  #
  #   spec.authors = ['John Jones', 'Mary Smith']

def authors= value
    @authors = Array(value).flatten.grep(String)
  end

##
  # A long description of this gem
  #
  # The description should be more detailed than the summary but not
  # excessively long.  A few paragraphs is a recommended length with no
  # examples or formatting.
  #
  # Usage:
  #
  #   spec.description = <<-EOF
  #     Rake is a Make-like program implemented in Ruby. Tasks and
  #     dependencies are specified in standard Ruby syntax.
  #   EOF

attr_reader :description

##
  # A contact email address (or addresses) for this gem
  #
  # Usage:
  #
  #   spec.email = 'john.jones@example.com'
  #   spec.email = ['jack@example.com', 'jill@example.com']

attr_accessor :email

##
  # The URL of this gem's home page
  #
  # Usage:
  #
  #   spec.homepage = 'https://github.com/ruby/rake'

attr_accessor :homepage

##
  # The license for this gem.
  #
  # The license must be no more than 64 characters.
  #
  # This should just be the name of your license. The full text of the license
  # should be inside of the gem (at the top level) when you build it.
  #
  # The simplest way, is to specify the standard SPDX ID
  # https://spdx.org/licenses/ for the license.
  # Ideally you should pick one that is OSI (Open Source Initiative)
  # http://opensource.org/licenses/alphabetical approved.
  #
  # The most commonly used OSI approved licenses are MIT and Apache-2.0.
  # GitHub also provides a license picker at http://choosealicense.com/.
  #
  # You should specify a license for your gem so that people know how they are
  # permitted to use it, and any restrictions you're placing on it.  Not
  # specifying a license means all rights are reserved; others have no rights
  # to use the code for any purpose.
  #
  # You can set multiple licenses with #licenses=
  #
  # Usage:
  #   spec.license = 'MIT'

def license=o
    self.licenses = [o]
  end

##
  # The license(s) for the library.
  #
  # Each license must be a short name, no more than 64 characters.
  #
  # This should just be the name of your license. The full
  # text of the license should be inside of the gem when you build it.
  #
  # See #license= for more discussion
  #
  # Usage:
  #   spec.licenses = ['MIT', 'GPL-2.0']

def licenses= licenses
    @licenses = Array licenses
  end

##
  # The metadata holds extra data for this gem that may be useful to other
  # consumers and is settable by gem authors without requiring an update to
  # the rubygems software.
  #
  # Metadata items have the following restrictions:
  #
  # * The metadata must be a Hash object
  # * All keys and values must be Strings
  # * Keys can be a maximum of 128 bytes and values can be a maximum of 1024
  #   bytes
  # * All strings must be UTF-8, no binary data is allowed
  #
  # You can use metadata to specify links to your gem's homepage, codebase,
  # documentation, wiki, mailing list, issue tracker and changelog.
  #
  #   s.metadata = {
  #     "bug_tracker_uri"   => "https://example.com/user/bestgemever/issues",
  #     "changelog_uri"     => "https://example.com/user/bestgemever/CHANGELOG.md",
  #     "documentation_uri" => "https://www.example.info/gems/bestgemever/0.0.1",
  #     "homepage_uri"      => "https://bestgemever.example.io",
  #     "mailing_list_uri"  => "https://groups.example.com/bestgemever",
  #     "source_code_uri"   => "https://example.com/user/bestgemever",
  #     "wiki_uri"          => "https://example.com/user/bestgemever/wiki"
  #   }
  #
  # These links will be used on your gem's page on rubygems.org and must pass
  # validation against following regex.
  #
  #   %r{\Ahttps?:\/\/([^\s:@]+:[^\s:@]*@)?[A-Za-z\d\-]+(\.[A-Za-z\d\-]+)+\.?(:\d{1,5})?([\/?]\S*)?\z}

attr_accessor :metadata

######################################################################
  # :section: Optional gemspec attributes

##
  # The path in the gem for executable scripts.  Usually 'bin'
  #
  # Usage:
  #
  #   spec.bindir = 'bin'

attr_accessor :bindir

##
  # The certificate chain used to sign this gem.  See Gem::Security for
  # details.

attr_accessor :cert_chain

##
  # A message that gets displayed after the gem is installed.
  #
  # Usage:
  #
  #   spec.post_install_message = "Thanks for installing!"

attr_accessor :post_install_message

##
  # The platform this gem runs on.
  #
  # This is usually Gem::Platform::RUBY or Gem::Platform::CURRENT.
  #
  # Most gems contain pure Ruby code; they should simply leave the default
  # value in place.  Some gems contain C (or other) code to be compiled into a
  # Ruby "extension".  The gem should leave the default value in place unless
  # the code will only compile on a certain type of system.  Some gems consist
  # of pre-compiled code ("binary gems").  It's especially important that they
  # set the platform attribute appropriately.  A shortcut is to set the
  # platform to Gem::Platform::CURRENT, which will cause the gem builder to set
  # the platform to the appropriate value for the system on which the build is
  # being performed.
  #
  # If this attribute is set to a non-default value, it will be included in
  # the filename of the gem when it is built such as:
  # nokogiri-1.6.0-x86-mingw32.gem
  #
  # Usage:
  #
  #   spec.platform = Gem::Platform.local

def platform= platform
    if @original_platform.nil? or
       @original_platform == Gem::Platform::RUBY then
      @original_platform = platform
    end

case platform
    when Gem::Platform::CURRENT then
      @new_platform = Gem::Platform.local
      @original_platform = @new_platform.to_s

when Gem::Platform then
      @new_platform = platform

# legacy constants
    when nil, Gem::Platform::RUBY then
      @new_platform = Gem::Platform::RUBY
    when 'mswin32' then # was Gem::Platform::WIN32
      @new_platform = Gem::Platform.new 'x86-mswin32'
    when 'i586-linux' then # was Gem::Platform::LINUX_586
      @new_platform = Gem::Platform.new 'x86-linux'
    when 'powerpc-darwin' then # was Gem::Platform::DARWIN
      @new_platform = Gem::Platform.new 'ppc-darwin'
    else
      @new_platform = Gem::Platform.new platform
    end

@platform = @new_platform.to_s

invalidate_memoized_attributes

@new_platform
  end

##
  # Paths in the gem to add to <code>$LOAD_PATH</code> when this gem is
  # activated.
  #--
  # See also #require_paths
  #++
  # If you have an extension you do not need to add <code>"ext"</code> to the
  # require path, the extension build process will copy the extension files
  # into "lib" for you.
  #
  # The default value is <code>"lib"</code>
  #
  # Usage:
  #
  #   # If all library files are in the root directory...
  #   spec.require_paths = ['.']

def require_paths=(val)
    @require_paths = Array(val)
  end

##
  # The version of Ruby required by this gem

attr_reader :required_ruby_version

##
  # The RubyGems version required by this gem

attr_reader :required_rubygems_version

##
  # The version of RubyGems used to create this gem.
  #
  # Do not set this, it is set automatically when the gem is packaged.

attr_accessor :rubygems_version

##
  # The key used to sign this gem.  See Gem::Security for details.

attr_accessor :signing_key

##
  # Adds a development dependency named +gem+ with +requirements+ to this
  # gem.
  #
  # Usage:
  #
  #   spec.add_development_dependency 'example', '~> 1.1', '>= 1.1.4'
  #
  # Development dependencies aren't installed by default and aren't
  # activated when a gem is required.

def add_development_dependency(gem, *requirements)
    add_dependency_with_type(gem, :development, requirements)
  end

##
  # Adds a runtime dependency named +gem+ with +requirements+ to this gem.
  #
  # Usage:
  #
  #   spec.add_runtime_dependency 'example', '~> 1.1', '>= 1.1.4'

def add_runtime_dependency(gem, *requirements)
    add_dependency_with_type(gem, :runtime, requirements)
  end

##
  # Executables included in the gem.
  #
  # For example, the rake gem has rake as an executable. You don’t specify the
  # full path (as in bin/rake); all application-style files are expected to be
  # found in bindir.  These files must be executable Ruby files.  Files that
  # use bash or other interpreters will not work.
  #
  # Executables included may only be ruby scripts, not scripts for other
  # languages or compiled binaries.
  #
  # Usage:
  #
  #   spec.executables << 'rake'

def executables
    @executables ||= []
  end

##
  # Extensions to build when installing the gem, specifically the paths to
  # extconf.rb-style files used to compile extensions.
  #
  # These files will be run when the gem is installed, causing the C (or
  # whatever) code to be compiled on the user’s machine.
  #
  # Usage:
  #
  #  spec.extensions << 'ext/rmagic/extconf.rb'
  #
  # See Gem::Ext::Builder for information about writing extensions for gems.

def extensions
    @extensions ||= []
  end

##
  # Extra files to add to RDoc such as README or doc/examples.txt
  #
  # When the user elects to generate the RDoc documentation for a gem (typically
  # at install time), all the library files are sent to RDoc for processing.
  # This option allows you to have some non-code files included for a more
  # complete set of documentation.
  #
  # Usage:
  #
  #  spec.extra_rdoc_files = ['README', 'doc/user-guide.txt']

def extra_rdoc_files
    @extra_rdoc_files ||= []
  end

##
  # The version of RubyGems that installed this gem.  Returns
  # <code>Gem::Version.new(0)</code> for gems installed by versions earlier
  # than RubyGems 2.2.0.

def installed_by_version # :nodoc:
    @installed_by_version ||= Gem::Version.new(0)
  end

##
  # Sets the version of RubyGems that installed this gem.  See also
  # #installed_by_version.

def installed_by_version= version # :nodoc:
    @installed_by_version = Gem::Version.new version
  end

##
  # Specifies the rdoc options to be used when generating API documentation.
  #
  # Usage:
  #
  #   spec.rdoc_options << '--title' << 'Rake -- Ruby Make' <<
  #     '--main' << 'README' <<
  #     '--line-numbers'

def rdoc_options
    @rdoc_options ||= []
  end

##
  # The version of Ruby required by this gem.  The ruby version can be
  # specified to the patch-level:
  #
  #   $ ruby -v -e 'p Gem.ruby_version'
  #   ruby 2.0.0p247 (2013-06-27 revision 41674) [x86_64-darwin12.4.0]
  #   #<Gem::Version "2.0.0.247">
  #
  # Because patch-level is taken into account, be very careful specifying using
  # `<=`: `<= 2.2.2` will not match any patch-level of 2.2.2 after the `p0`
  # release. It is much safer to specify `< 2.2.3` instead
  #
  # Usage:
  #
  #  # This gem will work with 1.8.6 or greater...
  #  spec.required_ruby_version = '>= 1.8.6'
  #
  #  # Only with ruby 2.0.x
  #  spec.required_ruby_version = '~> 2.0'
  #
  #  # Only with ruby between 2.2.0 and 2.2.2
  #  spec.required_ruby_version = ['>= 2.2.0', '< 2.2.3']

def required_ruby_version= req
    @required_ruby_version = Gem::Requirement.create req
  end

##
  # The RubyGems version required by this gem

def required_rubygems_version= req
    @required_rubygems_version = Gem::Requirement.create req
  end

##
  # Lists the external (to RubyGems) requirements that must be met for this gem
  # to work.  It's simply information for the user.
  #
  # Usage:
  #
  #   spec.requirements << 'libmagick, v6.0'
  #   spec.requirements << 'A good graphics card'

def requirements
    @requirements ||= []
  end

##
  # A collection of unit test files.  They will be loaded as unit tests when
  # the user requests a gem to be unit tested.
  #
  # Usage:
  #   spec.test_files = Dir.glob('test/tc_*.rb')
  #   spec.test_files = ['tests/test-suite.rb']

def test_files= files # :nodoc:
    @test_files = Array files
  end

######################################################################
  # :section: Specification internals

##
  # True when this gemspec has been activated. This attribute is not persisted.

attr_accessor :activated

alias :activated? :activated

##
  # Autorequire was used by old RubyGems to automatically require a file.
  #
  # Deprecated: It is neither supported nor functional.

attr_accessor :autorequire # :nodoc:

##
  # Sets the default executable for this gem.
  #
  # Deprecated: You must now specify the executable name to  Gem.bin_path.

attr_writer :default_executable

##
  # Allows deinstallation of gems with legacy platforms.

attr_writer :original_platform # :nodoc:

##
  # The rubyforge project this gem lives under.  i.e. RubyGems'
  # rubyforge_project is "rubygems".
  #
  # This option is deprecated.

attr_accessor :rubyforge_project

##
  # The Gem::Specification version of this gemspec.
  #
  # Do not set this, it is set automatically when the gem is packaged.

attr_accessor :specification_version

def self._all # :nodoc:
    unless defined?(@@all) && @@all then
      @@all = stubs.map(&:to_spec)
      if @@all.any?(&:nil?) # TODO: remove once we're happy
        raise "pid: #{$$} nil spec! included in #{stubs.inspect}"
      end

# After a reset, make sure already loaded specs
      # are still marked as activated.
      specs = {}
      Gem.loaded_specs.each_value{|s| specs[s] = true}
      @@all.each{|s| s.activated = true if specs[s]}
    end
    @@all
  end

def self._clear_load_cache # :nodoc:
    LOAD_CACHE.clear
  end

def self.each_gemspec(dirs) # :nodoc:
    dirs.each do |dir|
      Dir[File.join(dir, "*.gemspec")].each do |path|
        yield path.untaint
      end
    end
  end

def self.gemspec_stubs_in dir, pattern
    Dir[File.join(dir, pattern)].map { |path| yield path }.select(&:valid?)
  end
  private_class_method :gemspec_stubs_in

def self.default_stubs pattern
    base_dir = Gem.default_dir
    gems_dir = File.join base_dir, "gems"
    gemspec_stubs_in(default_specifications_dir, pattern) do |path|
      Gem::StubSpecification.default_gemspec_stub(path, base_dir, gems_dir)
    end
  end
  private_class_method :default_stubs

def self.installed_stubs dirs, pattern
    map_stubs(dirs, pattern) do |path, base_dir, gems_dir|
      Gem::StubSpecification.gemspec_stub(path, base_dir, gems_dir)
    end
  end
  private_class_method :installed_stubs

if [].respond_to? :flat_map
    def self.map_stubs(dirs, pattern) # :nodoc:
      dirs.flat_map { |dir|
        base_dir = File.dirname dir
        gems_dir = File.join base_dir, "gems"
        gemspec_stubs_in(dir, pattern) { |path| yield path, base_dir, gems_dir }
      }
    end
  else # FIXME: remove when 1.8 is dropped
    def self.map_stubs(dirs, pattern) # :nodoc:
      dirs.map { |dir|
        base_dir = File.dirname dir
        gems_dir = File.join base_dir, "gems"
        gemspec_stubs_in(dir, pattern) { |path| yield path, base_dir, gems_dir }
      }.flatten 1
    end
  end
  private_class_method :map_stubs

uniq_takes_a_block = false
  [1,2].uniq { uniq_takes_a_block = true }

if uniq_takes_a_block
    def self.uniq_by(list, &block) # :nodoc:
      list.uniq(&block)
    end
  else # FIXME: remove when 1.8 is dropped
    def self.uniq_by(list) # :nodoc:
      values = {}
      list.each { |item|
        value = yield item
        values[value] ||= item
      }
      values.values
    end
  end
  private_class_method :uniq_by

if [].respond_to? :sort_by!
    def self.sort_by! list, &block
      list.sort_by!(&block)
    end
  else # FIXME: remove when 1.8 is dropped
    def self.sort_by! list, &block
      list.replace list.sort_by(&block)
    end
  end
  private_class_method :sort_by!

def self.each_spec(dirs) # :nodoc:
    each_gemspec(dirs) do |path|
      spec = self.load path
      yield spec if spec
    end
  end

##
  # Returns a Gem::StubSpecification for every installed gem

def self.stubs
    @@stubs ||= begin
      pattern = "*.gemspec"
      stubs = default_stubs(pattern).concat installed_stubs(dirs, pattern)
      stubs = uniq_by(stubs) { |stub| stub.full_name }

_resort!(stubs)
      @@stubs_by_name = stubs.group_by(&:name)
      stubs
    end
  end

EMPTY = [].freeze # :nodoc:

##
  # Returns a Gem::StubSpecification for installed gem named +name+

def self.stubs_for name
    if @@stubs
      @@stubs_by_name[name] || []
    else
      pattern = "#{name}-*.gemspec"
      stubs = default_stubs(pattern) + installed_stubs(dirs, pattern)
      stubs = uniq_by(stubs) { |stub| stub.full_name }.group_by(&:name)
      stubs.each_value { |v| _resort!(v) }

@@stubs_by_name.merge! stubs
      @@stubs_by_name[name] ||= EMPTY
    end
  end

def self._resort!(specs) # :nodoc:
    specs.sort! { |a, b|
      names = a.name <=> b.name
      next names if names.nonzero?
      b.version <=> a.version
    }
  end

##
  # Loads the default specifications. It should be called only once.

def self.load_defaults
    each_spec([default_specifications_dir]) do |spec|
      # #load returns nil if the spec is bad, so we just ignore
      # it at this stage
      Gem.register_default_spec(spec)
    end
  end

##
  # Adds +spec+ to the known specifications, keeping the collection
  # properly sorted.

def self.add_spec spec
    warn "Gem::Specification.add_spec is deprecated and will be removed in RubyGems 3.0" unless Gem::Deprecate.skip
    # TODO: find all extraneous adds
    # puts
    # p :add_spec => [spec.full_name, caller.reject { |s| s =~ /minitest/ }]

# TODO: flush the rest of the crap from the tests
    # raise "no dupes #{spec.full_name} in #{all_names.inspect}" if
    #   _all.include? spec

raise "nil spec!" unless spec # TODO: remove once we're happy with tests

return if _all.include? spec

_all << spec
    stubs << spec
    (@@stubs_by_name[spec.name] ||= []) << spec
    sort_by!(@@stubs_by_name[spec.name]) { |s| s.version }
    _resort!(_all)
    _resort!(stubs)
  end

##
  # Adds multiple specs to the known specifications.

def self.add_specs *specs
    warn "Gem::Specification.add_specs is deprecated and will be removed in RubyGems 3.0" unless Gem::Deprecate.skip

raise "nil spec!" if specs.any?(&:nil?) # TODO: remove once we're happy

# TODO: this is much more efficient, but we need the extra checks for now
    # _all.concat specs
    # _resort!

Gem::Deprecate.skip_during do
      specs.each do |spec| # TODO: slow
        add_spec spec
      end
    end
  end

##
  # Returns all specifications. This method is discouraged from use.
  # You probably want to use one of the Enumerable methods instead.

def self.all
    warn "NOTE: Specification.all called from #{caller.first}" unless
      Gem::Deprecate.skip
    _all
  end

##
  # Sets the known specs to +specs+. Not guaranteed to work for you in
  # the future. Use at your own risk. Caveat emptor. Doomy doom doom.
  # Etc etc.
  #
  #--
  # Makes +specs+ the known specs
  # Listen, time is a river
  # Winter comes, code breaks
  #
  # -- wilsonb

def self.all= specs
    raise "nil spec!" if specs.any?(&:nil?) # TODO: remove once we're happy
    @@stubs_by_name = specs.group_by(&:name)
    @@all = @@stubs = specs
  end

##
  # Return full names of all specs in sorted order.

def self.all_names
    self._all.map(&:full_name)
  end

##
  # Return the list of all array-oriented instance variables.
  #--
  # Not sure why we need to use so much stupid reflection in here...

def self.array_attributes
    @@array_attributes.dup
  end

##
  # Return the list of all instance variables.
  #--
  # Not sure why we need to use so much stupid reflection in here...

def self.attribute_names
    @@attributes.dup
  end

##
  # Return the directories that Specification uses to find specs.

def self.dirs
    @@dirs ||= Gem.path.collect { |dir|
      File.join dir.dup.untaint, "specifications"
    }
  end

##
  # Set the directories that Specification uses to find specs. Setting
  # this resets the list of known specs.

def self.dirs= dirs
    self.reset

@@dirs = Array(dirs).map { |dir| File.join dir, "specifications" }
  end

extend Enumerable

##
  # Enumerate every known spec.  See ::dirs= and ::add_spec to set the list of
  # specs.

def self.each
    return enum_for(:each) unless block_given?

self._all.each do |x|
      yield x
    end
  end

##
  # Returns every spec that matches +name+ and optional +requirements+.

def self.find_all_by_name name, *requirements
    requirements = Gem::Requirement.default if requirements.empty?

# TODO: maybe try: find_all { |s| spec === dep }

Gem::Dependency.new(name, *requirements).matching_specs
  end

##
  # Returns every spec that has the given +full_name+

def self.find_all_by_full_name(full_name)
    stubs.select {|s| s.full_name == full_name }.map(&:to_spec)
  end

##
  # Find the best specification matching a +name+ and +requirements+. Raises
  # if the dependency doesn't resolve to a valid specification.

def self.find_by_name name, *requirements
    requirements = Gem::Requirement.default if requirements.empty?

# TODO: maybe try: find { |s| spec === dep }

Gem::Dependency.new(name, *requirements).to_spec
  end

##
  # Return the best specification that contains the file matching +path+.

def self.find_by_path path
    path = path.dup.freeze
    spec = @@spec_with_requirable_file[path] ||= (stubs.find { |s|
      next unless Gem::BundlerVersionFinder.compatible?(s)
      s.contains_requirable_file? path
    } || NOT_FOUND)
    spec.to_spec
  end

##
  # Return the best specification that contains the file matching +path+
  # amongst the specs that are not activated.

def self.find_inactive_by_path path
    stub = stubs.find { |s|
      next if s.activated?
      next unless Gem::BundlerVersionFinder.compatible?(s)
      s.contains_requirable_file? path
    }
    stub && stub.to_spec
  end

def self.find_active_stub_by_path path
    stub = @@active_stub_with_requirable_file[path] ||= (stubs.find { |s|
      s.activated? and s.contains_requirable_file? path
    } || NOT_FOUND)
    stub.this
  end

##
  # Return currently unresolved specs that contain the file matching +path+.

def self.find_in_unresolved path
    # TODO: do we need these?? Kill it
    specs = unresolved_deps.values.map { |dep| dep.to_specs }.flatten

specs.find_all { |spec| spec.contains_requirable_file? path }
  end

##
  # Search through all unresolved deps and sub-dependencies and return
  # specs that contain the file matching +path+.

def self.find_in_unresolved_tree path
    specs = unresolved_deps.values.map { |dep| dep.to_specs }.flatten

specs.each do |spec|
      spec.traverse do |from_spec, dep, to_spec, trail|
        if to_spec.has_conflicts? || to_spec.conficts_when_loaded_with?(trail)
          :next
        else
          return trail.reverse if to_spec.contains_requirable_file? path
        end
      end
    end

[]
  end

##
  # Special loader for YAML files.  When a Specification object is loaded
  # from a YAML file, it bypasses the normal Ruby object initialization
  # routine (#initialize).  This method makes up for that and deals with
  # gems of different ages.
  #
  # +input+ can be anything that YAML.load() accepts: String or IO.

def self.from_yaml(input)
    Gem.load_yaml

input = normalize_yaml_input input
    spec = Gem::SafeYAML.safe_load input

if spec && spec.class == FalseClass then
      raise Gem::EndOfYAMLException
    end

unless Gem::Specification === spec then
      raise Gem::Exception, "YAML data doesn't evaluate to gem specification"
    end

spec.specification_version ||= NONEXISTENT_SPECIFICATION_VERSION
    spec.reset_nil_attributes_to_default

spec
  end

##
  # Return the latest specs, optionally including prerelease specs if
  # +prerelease+ is true.

def self.latest_specs prerelease = false
    _latest_specs Gem::Specification._all, prerelease
  end

def self._latest_specs specs, prerelease = false # :nodoc:
    result = Hash.new { |h,k| h[k] = {} }
    native = {}

specs.reverse_each do |spec|
      next if spec.version.prerelease? unless prerelease

native[spec.name] = spec.version if spec.platform == Gem::Platform::RUBY
      result[spec.name][spec.platform] = spec
    end

result.map(&:last).map(&:values).flatten.reject { |spec|
      minimum = native[spec.name]
      minimum && spec.version < minimum
    }.sort_by{ |tup| tup.name }
  end

##
  # Loads Ruby format gemspec from +file+.

def self.load file
    return unless file

_spec = LOAD_CACHE[file]
    return _spec if _spec

file = file.dup.untaint
    return unless File.file?(file)

code = if defined? Encoding
             File.read file, :mode => 'r:UTF-8:-'
           else
             File.read file
           end

code.untaint

begin
      _spec = eval code, binding, file

if Gem::Specification === _spec
        _spec.loaded_from = File.expand_path file.to_s
        LOAD_CACHE[file] = _spec
        return _spec
      end

warn "[#{file}] isn't a Gem::Specification (#{_spec.class} instead)."
    rescue SignalException, SystemExit
      raise
    rescue SyntaxError, Exception => e
      warn "Invalid gemspec in [#{file}]: #{e}"
    end

nil
  end

##
  # Specification attributes that must be non-nil

def self.non_nil_attributes
    @@non_nil_attributes.dup
  end

##
  # Make sure the YAML specification is properly formatted with dashes

def self.normalize_yaml_input(input)
    result = input.respond_to?(:read) ? input.read : input
    result = "--- " + result unless result =~ /\A--- /
    result = result.dup
    result.gsub!(/ !!null \n/, " \n")
    # date: 2011-04-26 00:00:00.000000000Z
    # date: 2011-04-26 00:00:00.000000000 Z
    result.gsub!(/^(date: \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\.\d+?)Z/, '\1 Z')
    result
  end

##
  # Return a list of all outdated local gem names.  This method is HEAVY
  # as it must go fetch specifications from the server.
  #
  # Use outdated_and_latest_version if you wish to retrieve the latest remote
  # version as well.

def self.outdated
    outdated_and_latest_version.map { |local, _| local.name }
  end

##
  # Enumerates the outdated local gems yielding the local specification and
  # the latest remote version.
  #
  # This method may take some time to return as it must check each local gem
  # against the server's index.

def self.outdated_and_latest_version
    return enum_for __method__ unless block_given?

# TODO: maybe we should switch to rubygems' version service?
    fetcher = Gem::SpecFetcher.fetcher

latest_specs(true).each do |local_spec|
      dependency =
        Gem::Dependency.new local_spec.name, ">= #{local_spec.version}"

remotes, = fetcher.search_for_dependency dependency
      remotes  = remotes.map { |n, _| n.version }

latest_remote = remotes.sort.last

yield [local_spec, latest_remote] if
        latest_remote and local_spec.version < latest_remote
    end

nil
  end

##
  # Removes +spec+ from the known specs.

def self.remove_spec spec
    warn "Gem::Specification.remove_spec is deprecated and will be removed in RubyGems 3.0" unless Gem::Deprecate.skip
    _all.delete spec
    stubs.delete_if { |s| s.full_name == spec.full_name }
    (@@stubs_by_name[spec.name] || []).delete_if { |s| s.full_name == spec.full_name }
    reset
  end

##
  # Is +name+ a required attribute?

def self.required_attribute?(name)
    @@required_attributes.include? name.to_sym
  end

##
  # Required specification attributes

def self.required_attributes
    @@required_attributes.dup
  end

##
  # Reset the list of known specs, running pre and post reset hooks
  # registered in Gem.

def self.reset
    @@dirs = nil
    Gem.pre_reset_hooks.each { |hook| hook.call }
    @@all = nil
    @@stubs = nil
    @@stubs_by_name = {}
    @@spec_with_requirable_file          = {}
    @@active_stub_with_requirable_file   = {}
    _clear_load_cache
    unresolved = unresolved_deps
    unless unresolved.empty? then
      w = "W" + "ARN"
      warn "#{w}: Unresolved specs during Gem::Specification.reset:"
      unresolved.values.each do |dep|
        warn "      #{dep}"
      end
      warn "#{w}: Clearing out unresolved specs."
      warn "Please report a bug if this causes problems."
      unresolved.clear
    end
    Gem.post_reset_hooks.each { |hook| hook.call }
  end

# DOC: This method needs documented or nodoc'd
  def self.unresolved_deps
    @unresolved_deps ||= Hash.new { |h, n| h[n] = Gem::Dependency.new n }
  end

##
  # Load custom marshal format, re-initializing defaults as needed

def self._load(str)
    array = Marshal.load str

spec = Gem::Specification.new
    spec.instance_variable_set :@specification_version, array[1]

current_version = CURRENT_SPECIFICATION_VERSION

field_count = if spec.specification_version > current_version then
                    spec.instance_variable_set :@specification_version,
                                               current_version
                    MARSHAL_FIELDS[current_version]
                  else
                    MARSHAL_FIELDS[spec.specification_version]
                  end

if array.size < field_count then
      raise TypeError, "invalid Gem::Specification format #{array.inspect}"
    end

# Cleanup any YAML::PrivateType. They only show up for an old bug
    # where nil => null, so just convert them to nil based on the type.

array.map! { |e| e.kind_of?(YAML::PrivateType) ? nil : e }

spec.instance_variable_set :@rubygems_version,          array[0]
    # spec version
    spec.instance_variable_set :@name,                      array[2]
    spec.instance_variable_set :@version,                   array[3]
    spec.date =                                             array[4]
    spec.instance_variable_set :@summary,                   array[5]
    spec.instance_variable_set :@required_ruby_version,     array[6]
    spec.instance_variable_set :@required_rubygems_version, array[7]
    spec.instance_variable_set :@original_platform,         array[8]
    spec.instance_variable_set :@dependencies,              array[9]
    spec.instance_variable_set :@rubyforge_project,         array[10]
    spec.instance_variable_set :@email,                     array[11]
    spec.instance_variable_set :@authors,                   array[12]
    spec.instance_variable_set :@description,               array[13]
    spec.instance_variable_set :@homepage,                  array[14]
    spec.instance_variable_set :@has_rdoc,                  array[15]
    spec.instance_variable_set :@new_platform,              array[16]
    spec.instance_variable_set :@platform,                  array[16].to_s
    spec.instance_variable_set :@license,                   array[17]
    spec.instance_variable_set :@metadata,                  array[18]
    spec.instance_variable_set :@loaded,                    false
    spec.instance_variable_set :@activated,                 false

spec
  end

def <=>(other) # :nodoc:
    sort_obj <=> other.sort_obj
  end

def == other # :nodoc:
    self.class === other &&
      name == other.name &&
      version == other.version &&
      platform == other.platform
  end

##
  # Dump only crucial instance variables.
  #--
  # MAINTAIN ORDER!
  # (down with the man)

def _dump(limit)
    Marshal.dump [
      @rubygems_version,
      @specification_version,
      @name,
      @version,
      date,
      @summary,
      @required_ruby_version,
      @required_rubygems_version,
      @original_platform,
      @dependencies,
      @rubyforge_project,
      @email,
      @authors,
      @description,
      @homepage,
      true, # has_rdoc
      @new_platform,
      @licenses,
      @metadata
    ]
  end

##
  # Activate this spec, registering it as a loaded spec and adding
  # it's lib paths to $LOAD_PATH. Returns true if the spec was
  # activated, false if it was previously activated. Freaks out if
  # there are conflicts upon activation.

def activate
    other = Gem.loaded_specs[self.name]
    if other then
      check_version_conflict other
      return false
    end

raise_if_conflicts

activate_dependencies
    add_self_to_load_path

Gem.loaded_specs[self.name] = self
    @activated = true
    @loaded = true

return true
  end

##
  # Activate all unambiguously resolved runtime dependencies of this
  # spec. Add any ambiguous dependencies to the unresolved list to be
  # resolved later, as needed.

def activate_dependencies
    unresolved = Gem::Specification.unresolved_deps

self.runtime_dependencies.each do |spec_dep|
      if loaded = Gem.loaded_specs[spec_dep.name]
        next if spec_dep.matches_spec? loaded

msg = "can't satisfy '#{spec_dep}', already activated '#{loaded.full_name}'"
        e = Gem::LoadError.new msg
        e.name = spec_dep.name

raise e
      end

specs = spec_dep.to_specs

if specs.size == 1 then
        specs.first.activate
      else
        name = spec_dep.name
        unresolved[name] = unresolved[name].merge spec_dep
      end
    end

unresolved.delete self.name
  end

##
  # Abbreviate the spec for downloading.  Abbreviated specs are only used for
  # searching, downloading and related activities and do not need deployment
  # specific information (e.g. list of files).  So we abbreviate the spec,
  # making it much smaller for quicker downloads.

def abbreviate
    self.files = []
    self.test_files = []
    self.rdoc_options = []
    self.extra_rdoc_files = []
    self.cert_chain = []
  end

##
  # Sanitize the descriptive fields in the spec.  Sometimes non-ASCII
  # characters will garble the site index.  Non-ASCII characters will
  # be replaced by their XML entity equivalent.

def sanitize
    self.summary              = sanitize_string(summary)
    self.description          = sanitize_string(description)
    self.post_install_message = sanitize_string(post_install_message)
    self.authors              = authors.collect { |a| sanitize_string(a) }
  end

##
  # Sanitize a single string.

def sanitize_string(string)
    return string unless string

# HACK the #to_s is in here because RSpec has an Array of Arrays of
    # Strings for authors.  Need a way to disallow bad values on gemspec
    # generation.  (Probably won't happen.)
    string = string.to_s

begin
      Builder::XChar.encode string
    rescue NameError, NoMethodError
      string.to_xs
    end
  end

##
  # Returns an array with bindir attached to each executable in the
  # +executables+ list

def add_bindir(executables)
    return nil if executables.nil?

if @bindir then
      Array(executables).map { |e| File.join(@bindir, e) }
    else
      executables
    end
  rescue
    return nil
  end

##
  # Adds a dependency on gem +dependency+ with type +type+ that requires
  # +requirements+.  Valid types are currently <tt>:runtime</tt> and
  # <tt>:development</tt>.

def add_dependency_with_type(dependency, type, requirements)
    requirements = if requirements.empty? then
                     Gem::Requirement.default
                   else
                     requirements.flatten
                   end

unless dependency.respond_to?(:name) &&
           dependency.respond_to?(:requirement)
      dependency = Gem::Dependency.new(dependency.to_s, requirements, type)
    end

dependencies << dependency
  end

private :add_dependency_with_type

alias add_dependency add_runtime_dependency

##
  # Adds this spec's require paths to LOAD_PATH, in the proper location.

def add_self_to_load_path
    return if default_gem?

paths = full_require_paths

# gem directories must come after -I and ENV['RUBYLIB']
    insert_index = Gem.load_path_insert_index

if insert_index then
      # gem directories must come after -I and ENV['RUBYLIB']
      $LOAD_PATH.insert(insert_index, *paths)
    else
      # we are probably testing in core, -I and RUBYLIB don't apply
      $LOAD_PATH.unshift(*paths)
    end
  end

##
  # Singular reader for #authors.  Returns the first author in the list

def author
    val = authors and val.first
  end

##
  # The list of author names who wrote this gem.
  #
  #   spec.authors = ['Chad Fowler', 'Jim Weirich', 'Rich Kilmer']

def authors
    @authors ||= []
  end

##
  # Returns the full path to installed gem's bin directory.
  #
  # NOTE: do not confuse this with +bindir+, which is just 'bin', not
  # a full path.

def bin_dir
    @bin_dir ||= File.join gem_dir, bindir # TODO: this is unfortunate
  end

##
  # Returns the full path to an executable named +name+ in this gem.

def bin_file name
    File.join bin_dir, name
  end

##
  # Returns the build_args used to install the gem

def build_args
    if File.exist? build_info_file
      build_info = File.readlines build_info_file
      build_info = build_info.map { |x| x.strip }
      build_info.delete ""
      build_info
    else
      []
    end
  end

##
  # Builds extensions for this platform if the gem has extensions listed and
  # the gem.build_complete file is missing.

def build_extensions # :nodoc:
    return if default_gem?
    return if extensions.empty?
    return if installed_by_version < Gem::Version.new('2.2.0.preview.2')
    return if File.exist? gem_build_complete_path
    return if !File.writable?(base_dir)
    return if !File.exist?(File.join(base_dir, 'extensions'))

begin
      # We need to require things in $LOAD_PATH without looking for the
      # extension we are about to build.
      unresolved_deps = Gem::Specification.unresolved_deps.dup
      Gem::Specification.unresolved_deps.clear

require 'rubygems/config_file'
      require 'rubygems/ext'
      require 'rubygems/user_interaction'

ui = Gem::SilentUI.new
      Gem::DefaultUserInteraction.use_ui ui do
        builder = Gem::Ext::Builder.new self
        builder.build_extensions
      end
    ensure
      ui.close if ui
      Gem::Specification.unresolved_deps.replace unresolved_deps
    end
  end

##
  # Returns the full path to the build info directory

def build_info_dir
    File.join base_dir, "build_info"
  end

##
  # Returns the full path to the file containing the build
  # information generated when the gem was installed

def build_info_file
    File.join build_info_dir, "#{full_name}.info"
  end

##
  # Used to detect if the gem is bundled in older version of Ruby, but not
  # detectable as default gem (see BasicSpecification#default_gem?).

def bundled_gem_in_old_ruby?
    !default_gem? &&
      RUBY_VERSION < "2.0.0" &&
      summary == "This #{name} is bundled with Ruby"
  end

##
  # Returns the full path to the cache directory containing this
  # spec's cached gem.

def cache_dir
    @cache_dir ||= File.join base_dir, "cache"
  end

##
  # Returns the full path to the cached gem for this spec.

def cache_file
    @cache_file ||= File.join cache_dir, "#{full_name}.gem"
  end

##
  # Return any possible conflicts against the currently loaded specs.

def conflicts
    conflicts = {}
    self.runtime_dependencies.each { |dep|
      spec = Gem.loaded_specs[dep.name]
      if spec and not spec.satisfies_requirement? dep
        (conflicts[spec] ||= []) << dep
      end
    }
    env_req = Gem.env_requirement(name)
    (conflicts[self] ||= []) << env_req unless env_req.satisfied_by? version
    conflicts
  end

##
  # return true if there will be conflict when spec if loaded together with the list of specs.

def conficts_when_loaded_with?(list_of_specs) # :nodoc:
    result = list_of_specs.any? { |spec|
      spec.dependencies.any? { |dep| dep.runtime? && (dep.name == name) && !satisfies_requirement?(dep) }
    }
    result
  end

##
  # Return true if there are possible conflicts against the currently loaded specs.

def has_conflicts?
    return true unless Gem.env_requirement(name).satisfied_by?(version)
    self.dependencies.any? { |dep|
      if dep.runtime? then
        spec = Gem.loaded_specs[dep.name]
        spec and not spec.satisfies_requirement? dep
      else
        false
      end
    }
  end

##
  # The date this gem was created.  Lazily defaults to the current UTC date.
  #
  # There is no need to set this in your gem specification.

def date
    @date ||= TODAY
  end

DateLike = Object.new # :nodoc:
  def DateLike.===(obj) # :nodoc:
    defined?(::Date) and Date === obj
  end

DateTimeFormat = # :nodoc:
    /\A
     (\d{4})-(\d{2})-(\d{2})
     (\s+ \d{2}:\d{2}:\d{2}\.\d+ \s* (Z | [-+]\d\d:\d\d) )?
     \Z/x

##
  # The date this gem was created
  #
  # DO NOT set this, it is set automatically when the gem is packaged.

def date= date
    # We want to end up with a Time object with one-day resolution.
    # This is the cleanest, most-readable, faster-than-using-Date
    # way to do it.
    @date = case date
            when String then
              if DateTimeFormat =~ date then
                Time.utc($1.to_i, $2.to_i, $3.to_i)

# Workaround for where the date format output from psych isn't
              # parsed as a Time object by syck and thus comes through as a
              # string.
              elsif /\A(\d{4})-(\d{2})-(\d{2}) \d{2}:\d{2}:\d{2}\.\d+?Z\z/ =~ date then
                Time.utc($1.to_i, $2.to_i, $3.to_i)
              else
                raise(Gem::InvalidSpecificationException,
                      "invalid date format in specification: #{date.inspect}")
              end
            when Time, DateLike then
              Time.utc(date.year, date.month, date.day)
            else
              TODAY
            end
  end

##
  # The default executable for this gem.
  #
  # Deprecated: The name of the gem is assumed to be the name of the
  # executable now.  See Gem.bin_path.

def default_executable # :nodoc:
    if defined?(@default_executable) and @default_executable
      result = @default_executable
    elsif @executables and @executables.size == 1
      result = Array(@executables).first
    else
      result = nil
    end
    result
  end

##
  # The default value for specification attribute +name+

def default_value name
    @@default_value[name]
  end

##
  # A list of Gem::Dependency objects this gem depends on.
  #
  # Use #add_dependency or #add_development_dependency to add dependencies to
  # a gem.

def dependencies
    @dependencies ||= []
  end

##
  # Return a list of all gems that have a dependency on this gemspec.  The
  # list is structured with entries that conform to:
  #
  #   [depending_gem, dependency, [list_of_gems_that_satisfy_dependency]]

def dependent_gems
    out = []
    Gem::Specification.each do |spec|
      spec.dependencies.each do |dep|
        if self.satisfies_requirement?(dep) then
          sats = []
          find_all_satisfiers(dep) do |sat|
            sats << sat
          end
          out << [spec, dep, sats]
        end
      end
    end
    out
  end

##
  # Returns all specs that matches this spec's runtime dependencies.

def dependent_specs
    runtime_dependencies.map { |dep| dep.to_specs }.flatten
  end

##
  # A detailed description of this gem.  See also #summary

def description= str
    @description = str.to_s
  end

##
  # List of dependencies that are used for development

def development_dependencies
    dependencies.select { |d| d.type == :development }
  end

##
  # Returns the full path to this spec's documentation directory.  If +type+
  # is given it will be appended to the end.  For example:
  #
  #   spec.doc_dir      # => "/path/to/gem_repo/doc/a-1"
  #
  #   spec.doc_dir 'ri' # => "/path/to/gem_repo/doc/a-1/ri"

def doc_dir type = nil
    @doc_dir ||= File.join base_dir, 'doc', full_name

if type then
      File.join @doc_dir, type
    else
      @doc_dir
    end
  end

def encode_with coder # :nodoc:
    mark_version

coder.add 'name', @name
    coder.add 'version', @version
    platform = case @original_platform
               when nil, '' then
                 'ruby'
               when String then
                 @original_platform
               else
                 @original_platform.to_s
               end
    coder.add 'platform', platform

attributes = @@attributes.map(&:to_s) - %w[name version platform]
    attributes.each do |name|
      coder.add name, instance_variable_get("@#{name}")
    end
  end

def eql? other # :nodoc:
    self.class === other && same_attributes?(other)
  end

##
  # Singular accessor for #executables

def executable
    val = executables and val.first
  end

##
  # Singular accessor for #executables

def executable=o
    self.executables = [o]
  end

##
  # Sets executables to +value+, ensuring it is an array. Don't
  # use this, push onto the array instead.

def executables= value
    # TODO: warn about setting instead of pushing
    @executables = Array(value)
  end

##
  # Sets extensions to +extensions+, ensuring it is an array. Don't
  # use this, push onto the array instead.

def extensions= extensions
    # TODO: warn about setting instead of pushing
    @extensions = Array extensions
  end

##
  # Sets extra_rdoc_files to +files+, ensuring it is an array. Don't
  # use this, push onto the array instead.

def extra_rdoc_files= files
    # TODO: warn about setting instead of pushing
    @extra_rdoc_files = Array files
  end

##
  # The default (generated) file name of the gem.  See also #spec_name.
  #
  #   spec.file_name # => "example-1.0.gem"

def file_name
    "#{full_name}.gem"
  end

##
  # Sets files to +files+, ensuring it is an array.

def files= files
    @files = Array files
  end

##
  # Finds all gems that satisfy +dep+

def find_all_satisfiers dep
    Gem::Specification.each do |spec|
      yield spec if spec.satisfies_requirement? dep
    end
  end

private :find_all_satisfiers

##
  # Creates a duplicate spec without large blobs that aren't used at runtime.

def for_cache
    spec = dup

spec.files = nil
    spec.test_files = nil

spec
  end

def full_name
    @full_name ||= super
  end

##
  # Work around bundler removing my methods

def gem_dir # :nodoc:
    super
  end

def gems_dir
    # TODO: this logic seems terribly broken, but tests fail if just base_dir
    @gems_dir ||= File.join(loaded_from && base_dir || Gem.dir, "gems")
  end

##
  # Deprecated and ignored, defaults to true.
  #
  # Formerly used to indicate this gem was RDoc-capable.

def has_rdoc # :nodoc:
    true
  end

##
  # Deprecated and ignored.
  #
  # Formerly used to indicate this gem was RDoc-capable.

def has_rdoc= ignored # :nodoc:
    @has_rdoc = true
  end

alias :has_rdoc? :has_rdoc # :nodoc:

##
  # True if this gem has files in test_files

def has_unit_tests? # :nodoc:
    not test_files.empty?
  end

# :stopdoc:
  alias has_test_suite? has_unit_tests?
  # :startdoc:

def hash # :nodoc:
    name.hash ^ version.hash
  end

def init_with coder # :nodoc:
    @installed_by_version ||= nil
    yaml_initialize coder.tag, coder.map
  end

eval <<-RB, binding, __FILE__, __LINE__ + 1
    def set_nil_attributes_to_nil
      #{@@nil_attributes.map {|key| "@#{key} = nil" }.join "; "}
    end
    private :set_nil_attributes_to_nil

def set_not_nil_attributes_to_default_values
      #{@@non_nil_attributes.map {|key| "@#{key} = #{INITIALIZE_CODE_FOR_DEFAULTS[key]}" }.join ";"}
    end
    private :set_not_nil_attributes_to_default_values
  RB

##
  # Specification constructor. Assigns the default values to the attributes
  # and yields itself for further initialization.  Optionally takes +name+ and
  # +version+.

def initialize name = nil, version = nil
    super()
    @gems_dir              = nil
    @base_dir              = nil
    @loaded = false
    @activated = false
    @loaded_from = nil
    @original_platform = nil
    @installed_by_version = nil

set_nil_attributes_to_nil
    set_not_nil_attributes_to_default_values

@new_platform = Gem::Platform::RUBY

self.name = name if name
    self.version = version if version

yield self if block_given?
  end

##
  # Duplicates array_attributes from +other_spec+ so state isn't shared.

def initialize_copy other_spec
    self.class.array_attributes.each do |name|
      name = :"@#{name}"
      next unless other_spec.instance_variable_defined? name

begin
        val = other_spec.instance_variable_get(name)
        if val then
          instance_variable_set name, val.dup
        elsif Gem.configuration.really_verbose
          warn "WARNING: #{full_name} has an invalid nil value for #{name}"
        end
      rescue TypeError
        e = Gem::FormatException.new \
          "#{full_name} has an invalid value for #{name}"

e.file_path = loaded_from
        raise e
      end
    end
  end

def base_dir
    return Gem.dir unless loaded_from
    @base_dir ||= if default_gem? then
                    File.dirname File.dirname File.dirname loaded_from
                  else
                    File.dirname File.dirname loaded_from
                  end
  end

##
  # Expire memoized instance variables that can incorrectly generate, replace
  # or miss files due changes in certain attributes used to compute them.

def invalidate_memoized_attributes
    @full_name = nil
    @cache_file = nil
  end

private :invalidate_memoized_attributes

def inspect # :nodoc:
    if $DEBUG
      super
    else
      "#{super[0..-2]} #{full_name}>"
    end
  end

##
  # Files in the Gem under one of the require_paths

def lib_files
    @files.select do |file|
      require_paths.any? do |path|
        file.start_with? path
      end
    end
  end

##
  # Singular accessor for #licenses

def license
    licenses.first
  end

##
  # Plural accessor for setting licenses
  #
  # See #license= for details

def licenses
    @licenses ||= []
  end

def internal_init # :nodoc:
    super
    @bin_dir       = nil
    @cache_dir     = nil
    @cache_file    = nil
    @doc_dir       = nil
    @ri_dir        = nil
    @spec_dir      = nil
    @spec_file     = nil
  end

##
  # Sets the rubygems_version to the current RubyGems version.

def mark_version
    @rubygems_version = Gem::VERSION
  end

##
  # Warn about unknown attributes while loading a spec.

def method_missing(sym, *a, &b) # :nodoc:
    if @specification_version > CURRENT_SPECIFICATION_VERSION and
      sym.to_s =~ /=$/ then
      warn "ignoring #{sym} loading #{full_name}" if $DEBUG
    else
      super
    end
  end

##
  # Is this specification missing its extensions?  When this returns true you
  # probably want to build_extensions

def missing_extensions?
    return false if default_gem?
    return false if extensions.empty?
    return false if installed_by_version < Gem::Version.new('2.2.0.preview.2')
    return false if File.exist? gem_build_complete_path

true
  end

##
  # Normalize the list of files so that:
  # * All file lists have redundancies removed.
  # * Files referenced in the extra_rdoc_files are included in the package
  #   file list.

def normalize
    if defined?(@extra_rdoc_files) and @extra_rdoc_files then
      @extra_rdoc_files.uniq!
      @files ||= []
      @files.concat(@extra_rdoc_files)
    end

@files            = @files.uniq if @files
    @extensions       = @extensions.uniq if @extensions
    @test_files       = @test_files.uniq if @test_files
    @executables      = @executables.uniq if @executables
    @extra_rdoc_files = @extra_rdoc_files.uniq if @extra_rdoc_files
  end

##
  # Return a NameTuple that represents this Specification

def name_tuple
    Gem::NameTuple.new name, version, original_platform
  end

##
  # Returns the full name (name-version) of this gemspec using the original
  # platform.  For use with legacy gems.

def original_name # :nodoc:
    if platform == Gem::Platform::RUBY or platform.nil? then
      "#{@name}-#{@version}"
    else
      "#{@name}-#{@version}-#{@original_platform}"
    end
  end

##
  # Cruft. Use +platform+.

def original_platform # :nodoc:
    @original_platform ||= platform
  end

##
  # The platform this gem runs on.  See Gem::Platform for details.

def platform
    @new_platform ||= Gem::Platform::RUBY
  end

def pretty_print(q) # :nodoc:
    q.group 2, 'Gem::Specification.new do |s|', 'end' do
      q.breakable

attributes = @@attributes - [:name, :version]
      attributes.unshift :installed_by_version
      attributes.unshift :version
      attributes.unshift :name

attributes.each do |attr_name|
        current_value = self.send attr_name
        if current_value != default_value(attr_name) or
           self.class.required_attribute? attr_name then

q.text "s.#{attr_name} = "

if attr_name == :date then
            current_value = current_value.utc

q.text "Time.utc(#{current_value.year}, #{current_value.month}, #{current_value.day})"
          else
            q.pp current_value
          end

q.breakable
        end
      end
    end
  end

##
  # Raise an exception if the version of this spec conflicts with the one
  # that is already loaded (+other+)

def check_version_conflict other # :nodoc:
    return if self.version == other.version

# This gem is already loaded.  If the currently loaded gem is not in the
    # list of candidate gems, then we have a version conflict.

msg = "can't activate #{full_name}, already activated #{other.full_name}"

e = Gem::LoadError.new msg
    e.name = self.name
    # TODO: e.requirement = dep.requirement

raise e
  end

private :check_version_conflict

##
  # Check the spec for possible conflicts and freak out if there are any.

def raise_if_conflicts # :nodoc:
    if has_conflicts? then
      raise Gem::ConflictError.new self, conflicts
    end
  end

##
  # Sets rdoc_options to +value+, ensuring it is an array. Don't
  # use this, push onto the array instead.

def rdoc_options= options
    # TODO: warn about setting instead of pushing
    @rdoc_options = Array options
  end

##
  # Singular accessor for #require_paths

def require_path
    val = require_paths and val.first
  end

##
  # Singular accessor for #require_paths

def require_path= path
    self.require_paths = Array(path)
  end

##
  # Set requirements to +req+, ensuring it is an array. Don't
  # use this, push onto the array instead.

def requirements= req
    # TODO: warn about setting instead of pushing
    @requirements = Array req
  end

def respond_to_missing? m, include_private = false # :nodoc:
    false
  end

##
  # Returns the full path to this spec's ri directory.

def ri_dir
    @ri_dir ||= File.join base_dir, 'ri', full_name
  end

##
  # Return a string containing a Ruby code representation of the given
  # object.

def ruby_code(obj)
    case obj
    when String            then obj.dump + ".freeze"
    when Array             then '[' + obj.map { |x| ruby_code x }.join(", ") + ']'
    when Hash              then
      seg = obj.keys.sort.map { |k| "#{k.to_s.dump} => #{obj[k].to_s.dump}" }
      "{ #{seg.join(', ')} }"
    when Gem::Version      then obj.to_s.dump
    when DateLike          then obj.strftime('%Y-%m-%d').dump
    when Time              then obj.strftime('%Y-%m-%d').dump
    when Numeric           then obj.inspect
    when true, false, nil  then obj.inspect
    when Gem::Platform     then "Gem::Platform.new(#{obj.to_a.inspect})"
    when Gem::Requirement  then
      list = obj.as_list
      "Gem::Requirement.new(#{ruby_code(list.size == 1 ? obj.to_s : list)})"
    else raise Gem::Exception, "ruby_code case not handled: #{obj.class}"
    end
  end

private :ruby_code

##
  # List of dependencies that will automatically be activated at runtime.

def runtime_dependencies
    dependencies.select(&:runtime?)
  end

##
  # True if this gem has the same attributes as +other+.

def same_attributes? spec
    @@attributes.all? { |name, default| self.send(name) == spec.send(name) }
  end

private :same_attributes?

##
  # Checks if this specification meets the requirement of +dependency+.

def satisfies_requirement? dependency
    return @name == dependency.name &&
      dependency.requirement.satisfied_by?(@version)
  end

##
  # Returns an object you can use to sort specifications in #sort_by.

def sort_obj
    [@name, @version, @new_platform == Gem::Platform::RUBY ? -1 : 1]
  end

##
  # Used by Gem::Resolver to order Gem::Specification objects

def source # :nodoc:
    Gem::Source::Installed.new
  end

##
  # Returns the full path to the directory containing this spec's
  # gemspec file. eg: /usr/local/lib/ruby/gems/1.8/specifications

def spec_dir
    @spec_dir ||= File.join base_dir, "specifications"
  end

##
  # Returns the full path to this spec's gemspec file.
  # eg: /usr/local/lib/ruby/gems/1.8/specifications/mygem-1.0.gemspec

def spec_file
    @spec_file ||= File.join spec_dir, "#{full_name}.gemspec"
  end

##
  # The default name of the gemspec.  See also #file_name
  #
  #   spec.spec_name # => "example-1.0.gemspec"

def spec_name
    "#{full_name}.gemspec"
  end

##
  # A short summary of this gem's description.

def summary= str
    @summary = str.to_s.strip.
      gsub(/(\w-)\n[ \t]*(\w)/, '\1\2').gsub(/\n[ \t]*/, " ") # so. weird.
  end

##
  # Singular accessor for #test_files

def test_file # :nodoc:
    val = test_files and val.first
  end

##
  # Singular mutator for #test_files

def test_file= file # :nodoc:
    self.test_files = [file]
  end

##
  # Test files included in this gem.  You cannot append to this accessor, you
  # must assign to it.

def test_files # :nodoc:
    # Handle the possibility that we have @test_suite_file but not
    # @test_files.  This will happen when an old gem is loaded via
    # YAML.
    if defined? @test_suite_file then
      @test_files = [@test_suite_file].flatten
      @test_suite_file = nil
    end
    if defined?(@test_files) and @test_files then
      @test_files
    else
      @test_files = []
    end
  end

##
  # Returns a Ruby code representation of this specification, such that it can
  # be eval'ed and reconstruct the same specification later.  Attributes that
  # still have their default values are omitted.

def to_ruby
    mark_version
    result = []
    result << "# -*- encoding: utf-8 -*-"
    result << "#{Gem::StubSpecification::PREFIX}#{name} #{version} #{platform} #{raw_require_paths.join("\0")}"
    result << "#{Gem::StubSpecification::PREFIX}#{extensions.join "\0"}" unless
      extensions.empty?
    result << nil
    result << "Gem::Specification.new do |s|"

result << "  s.name = #{ruby_code name}"
    result << "  s.version = #{ruby_code version}"
    unless platform.nil? or platform == Gem::Platform::RUBY then
      result << "  s.platform = #{ruby_code original_platform}"
    end
    result << ""
    result << "  s.required_rubygems_version = #{ruby_code required_rubygems_version} if s.respond_to? :required_rubygems_version="

if metadata and !metadata.empty?
      result << "  s.metadata = #{ruby_code metadata} if s.respond_to? :metadata="
    end
    result << "  s.require_paths = #{ruby_code raw_require_paths}"

handled = [
      :dependencies,
      :name,
      :platform,
      :require_paths,
      :required_rubygems_version,
      :specification_version,
      :version,
      :has_rdoc,
      :default_executable,
      :metadata
    ]

@@attributes.each do |attr_name|
      next if handled.include? attr_name
      current_value = self.send(attr_name)
      if current_value != default_value(attr_name) or
         self.class.required_attribute? attr_name then
        result << "  s.#{attr_name} = #{ruby_code current_value}"
      end
    end

if @installed_by_version then
      result << nil
      result << "  s.installed_by_version = \"#{Gem::VERSION}\" if s.respond_to? :installed_by_version"
    end

unless dependencies.empty? then
      result << nil
      result << "  if s.respond_to? :specification_version then"
      result << "    s.specification_version = #{specification_version}"
      result << nil

result << "    if Gem::Version.new(Gem::VERSION) >= Gem::Version.new('1.2.0') then"

dependencies.each do |dep|
        req = dep.requirements_list.inspect
        dep.instance_variable_set :@type, :runtime if dep.type.nil? # HACK
        result << "      s.add_#{dep.type}_dependency(%q<#{dep.name}>.freeze, #{req})"
      end

result << "    else"

dependencies.each do |dep|
        version_reqs_param = dep.requirements_list.inspect
        result << "      s.add_dependency(%q<#{dep.name}>.freeze, #{version_reqs_param})"
      end

result << '    end'

result << "  else"
      dependencies.each do |dep|
        version_reqs_param = dep.requirements_list.inspect
        result << "    s.add_dependency(%q<#{dep.name}>.freeze, #{version_reqs_param})"
      end
      result << "  end"
    end

result << "end"
    result << nil

result.join "\n"
  end

##
  # Returns a Ruby lighter-weight code representation of this specification,
  # used for indexing only.
  #
  # See #to_ruby.

def to_ruby_for_cache
    for_cache.to_ruby
  end

def to_s # :nodoc:
    "#<Gem::Specification name=#{@name} version=#{@version}>"
  end

##
  # Returns self

def to_spec
    self
  end

def to_yaml(opts = {}) # :nodoc:
    if (YAML.const_defined?(:ENGINE) && !YAML::ENGINE.syck?) ||
        (defined?(Psych) && YAML == Psych) then
      # Because the user can switch the YAML engine behind our
      # back, we have to check again here to make sure that our
      # psych code was properly loaded, and load it if not.
      unless Gem.const_defined?(:NoAliasYAMLTree)
        require 'rubygems/psych_tree'
      end

builder = Gem::NoAliasYAMLTree.create
      builder << self
      ast = builder.tree

io = StringIO.new
      io.set_encoding Encoding::UTF_8 if Object.const_defined? :Encoding

Psych::Visitors::Emitter.new(io).accept(ast)

io.string.gsub(/ !!null \n/, " \n")
    else
      YAML.quick_emit object_id, opts do |out|
        out.map taguri, to_yaml_style do |map|
          encode_with map
        end
      end
    end
  end

##
  # Recursively walk dependencies of this spec, executing the +block+ for each
  # hop.

def traverse trail = [], visited = {}, &block
    trail.push(self)
    begin
      dependencies.each do |dep|
        next unless dep.runtime?
        dep.to_specs.each do |dep_spec|
          next if visited.has_key?(dep_spec)
          visited[dep_spec] = true
          trail.push(dep_spec)
          begin
            result = block[self, dep, dep_spec, trail]
          ensure
            trail.pop
          end
          unless result == :next
            spec_name = dep_spec.name
            dep_spec.traverse(trail, visited, &block) unless
              trail.any? { |s| s.name == spec_name }
          end
        end
      end
    ensure
      trail.pop
    end
  end

##
  # Checks that the specification contains all required fields, and does a
  # very basic sanity check.
  #
  # Raises InvalidSpecificationException if the spec does not pass the
  # checks..

def validate packaging = true
    @warnings = 0
    require 'rubygems/user_interaction'
    extend Gem::UserInteraction
    normalize

nil_attributes = self.class.non_nil_attributes.find_all do |attrname|
      instance_variable_get("@#{attrname}").nil?
    end

unless nil_attributes.empty? then
      raise Gem::InvalidSpecificationException,
        "#{nil_attributes.join ', '} must not be nil"
    end

if packaging and rubygems_version != Gem::VERSION then
      raise Gem::InvalidSpecificationException,
            "expected RubyGems version #{Gem::VERSION}, was #{rubygems_version}"
    end

@@required_attributes.each do |symbol|
      unless self.send symbol then
        raise Gem::InvalidSpecificationException,
              "missing value for attribute #{symbol}"
      end
    end

if !name.is_a?(String) then
      raise Gem::InvalidSpecificationException,
            "invalid value for attribute name: \"#{name.inspect}\" must be a string"
    elsif name !~ /[a-zA-Z]/ then
      raise Gem::InvalidSpecificationException,
            "invalid value for attribute name: #{name.dump} must include at least one letter"
    elsif name !~ VALID_NAME_PATTERN then
      raise Gem::InvalidSpecificationException,
            "invalid value for attribute name: #{name.dump} can only include letters, numbers, dashes, and underscores"
    end

if raw_require_paths.empty? then
      raise Gem::InvalidSpecificationException,
            'specification must have at least one require_path'
    end

@files.delete_if            { |x| File.directory?(x) && !File.symlink?(x) }
    @test_files.delete_if       { |x| File.directory?(x) && !File.symlink?(x) }
    @executables.delete_if      { |x| File.directory?(File.join(@bindir, x)) }
    @extra_rdoc_files.delete_if { |x| File.directory?(x) && !File.symlink?(x) }
    @extensions.delete_if       { |x| File.directory?(x) && !File.symlink?(x) }

non_files = files.reject { |x| File.file?(x) || File.symlink?(x) }

unless not packaging or non_files.empty? then
      raise Gem::InvalidSpecificationException,
            "[\"#{non_files.join "\", \""}\"] are not files"
    end

if files.include? file_name then
      raise Gem::InvalidSpecificationException,
            "#{full_name} contains itself (#{file_name}), check your files list"
    end

unless specification_version.is_a?(Integer)
      raise Gem::InvalidSpecificationException,
            'specification_version must be an Integer (did you mean version?)'
    end

case platform
    when Gem::Platform, Gem::Platform::RUBY then # ok
    else
      raise Gem::InvalidSpecificationException,
            "invalid platform #{platform.inspect}, see Gem::Platform"
    end

self.class.array_attributes.each do |field|
      val = self.send field
      klass = case field
              when :dependencies
                Gem::Dependency
              else
                String
              end

unless Array === val and val.all? { |x| x.kind_of?(klass) } then
        raise(Gem::InvalidSpecificationException,
              "#{field} must be an Array of #{klass}")
      end
    end

[:authors].each do |field|
      val = self.send field
      raise Gem::InvalidSpecificationException, "#{field} may not be empty" if
        val.empty?
    end

unless Hash === metadata
      raise Gem::InvalidSpecificationException,
              'metadata must be a hash'
    end

validate_metadata

licenses.each { |license|
      if license.length > 64
        raise Gem::InvalidSpecificationException,
          "each license must be 64 characters or less"
      end

if !Gem::Licenses.match?(license)
        suggestions = Gem::Licenses.suggestions(license)
        message = <<-warning
license value '#{license}' is invalid.  Use a license identifier from
http://spdx.org/licenses or '#{Gem::Licenses::NONSTANDARD}' for a nonstandard license.
        warning
        message += "Did you mean #{suggestions.map { |s| "'#{s}'"}.join(', ')}?\n" unless suggestions.nil?
        warning(message)
      end
    }

warning <<-warning if licenses.empty?
licenses is empty, but is recommended.  Use a license identifier from
http://spdx.org/licenses or '#{Gem::Licenses::NONSTANDARD}' for a nonstandard license.
    warning

validate_permissions

# reject lazy developers:

lazy = '"FIxxxXME" or "TOxxxDO"'.gsub(/xxx/, '')

unless authors.grep(/FI XME|TO DO/x).empty? then
      raise Gem::InvalidSpecificationException, "#{lazy} is not an author"
    end

unless Array(email).grep(/FI XME|TO DO/x).empty? then
      raise Gem::InvalidSpecificationException, "#{lazy} is not an email"
    end

if description =~ /FI XME|TO DO/x then
      raise Gem::InvalidSpecificationException, "#{lazy} is not a description"
    end

if summary =~ /FI XME|TO DO/x then
      raise Gem::InvalidSpecificationException, "#{lazy} is not a summary"
    end

# Make sure a homepage is valid HTTP/HTTPS URI
    if homepage and not homepage.empty?
      begin
        homepage_uri = URI.parse(homepage)
        unless [URI::HTTP, URI::HTTPS].member? homepage_uri.class
          raise Gem::InvalidSpecificationException, "\"#{homepage}\" is not a valid HTTP URI"
        end
      rescue URI::InvalidURIError
        raise Gem::InvalidSpecificationException, "\"#{homepage}\" is not a valid HTTP URI"
      end
    end

# Warnings

%w[author homepage summary files].each do |attribute|
      value = self.send attribute
      warning "no #{attribute} specified" if value.nil? or value.empty?
    end

if description == summary then
      warning 'description and summary are identical'
    end

# TODO: raise at some given date
    warning "deprecated autorequire specified" if autorequire

executables.each do |executable|
      executable_path = File.join(bindir, executable)
      shebang = File.read(executable_path, 2) == '#!'

warning "#{executable_path} is missing #! line" unless shebang
    end

files.each do |file|
      next unless File.symlink?(file)
      warning "#{file} is a symlink, which is not supported on all platforms"
    end

validate_dependencies

true
  ensure
    if $! or @warnings > 0 then
      alert_warning "See http://guides.rubygems.org/specification-reference/ for help"
    end
  end

def validate_metadata
    url_validation_regex = %r{\Ahttps?:\/\/([^\s:@]+:[^\s:@]*@)?[A-Za-z\d\-]+(\.[A-Za-z\d\-]+)+\.?(:\d{1,5})?([\/?]\S*)?\z}
    link_keys = %w(
      bug_tracker_uri
      changelog_uri
      documentation_uri
      homepage_uri
      mailing_list_uri
      source_code_uri
      wiki_uri
    )

metadata.each do|key, value|
      if !key.kind_of?(String)
        raise Gem::InvalidSpecificationException,
                "metadata keys must be a String"
      end

if key.size > 128
        raise Gem::InvalidSpecificationException,
                "metadata key too large (#{key.size} > 128)"
      end

if !value.kind_of?(String)
        raise Gem::InvalidSpecificationException,
                "metadata values must be a String"
      end

if value.size > 1024
        raise Gem::InvalidSpecificationException,
                "metadata value too large (#{value.size} > 1024)"
      end

if link_keys.include? key
        if value !~ url_validation_regex
          raise Gem::InvalidSpecificationException,
                 "metadata['#{key}'] has invalid link: #{value.inspect}"
        end
      end
    end
  end

##
  # Checks that dependencies use requirements as we recommend.  Warnings are
  # issued when dependencies are open-ended or overly strict for semantic
  # versioning.

def validate_dependencies # :nodoc:
    # NOTE: see REFACTOR note in Gem::Dependency about types - this might be brittle
    seen = Gem::Dependency::TYPES.inject({}) { |types, type| types.merge({ type => {}}) }

error_messages = []
    warning_messages = []
    dependencies.each do |dep|
      if prev = seen[dep.type][dep.name] then
        error_messages << <<-MESSAGE
duplicate dependency on #{dep}, (#{prev.requirement}) use:
    add_#{dep.type}_dependency '#{dep.name}', '#{dep.requirement}', '#{prev.requirement}'
        MESSAGE
      end

seen[dep.type][dep.name] = dep

prerelease_dep = dep.requirements_list.any? do |req|
        Gem::Requirement.new(req).prerelease?
      end

warning_messages << "prerelease dependency on #{dep} is not recommended" if
        prerelease_dep && !version.prerelease?

overly_strict = dep.requirement.requirements.length == 1 &&
        dep.requirement.requirements.any? do |op, version|
          op == '~>' and
            not version.prerelease? and
            version.segments.length > 2 and
            version.segments.first != 0
        end

if overly_strict then
        _, dep_version = dep.requirement.requirements.first

base = dep_version.segments.first 2

warning_messages << <<-WARNING
pessimistic dependency on #{dep} may be overly strict
  if #{dep.name} is semantically versioned, use:
    add_#{dep.type}_dependency '#{dep.name}', '~> #{base.join '.'}', '>= #{dep_version}'
        WARNING
      end

open_ended = dep.requirement.requirements.all? do |op, version|
        not version.prerelease? and (op == '>' or op == '>=')
      end

if open_ended then
        op, dep_version = dep.requirement.requirements.first

base = dep_version.segments.first 2

bugfix = if op == '>' then
                   ", '> #{dep_version}'"
                 elsif op == '>=' and base != dep_version.segments then
                   ", '>= #{dep_version}'"
                 end

warning_messages << <<-WARNING
open-ended dependency on #{dep} is not recommended
  if #{dep.name} is semantically versioned, use:
    add_#{dep.type}_dependency '#{dep.name}', '~> #{base.join '.'}'#{bugfix}
        WARNING
      end
    end
    if error_messages.any?
      raise Gem::InvalidSpecificationException, error_messages.join
    end
    if warning_messages.any?
      warning_messages.each { |warning_message| warning warning_message }
    end
  end

##
  # Checks to see if the files to be packaged are world-readable.

def validate_permissions
    return if Gem.win_platform?

files.each do |file|
      next unless File.file?(file)
      next if File.stat(file).mode & 0444 == 0444
      warning "#{file} is not world-readable"
    end

executables.each do |name|
      exec = File.join @bindir, name
      next unless File.file?(exec)
      next if File.stat(exec).executable?
      warning "#{exec} is not executable"
    end
  end

##
  # Set the version to +version+, potentially also setting
  # required_rubygems_version if +version+ indicates it is a
  # prerelease.

def version= version
    @version = Gem::Version.create(version)
    self.required_rubygems_version = '> 1.3.1' if @version.prerelease?
    invalidate_memoized_attributes

return @version
  end

def stubbed?
    false
  end

def yaml_initialize(tag, vals) # :nodoc:
    vals.each do |ivar, val|
      case ivar
      when "date"
        # Force Date to go through the extra coerce logic in date=
        self.date = val.untaint
      else
        instance_variable_set "@#{ivar}", val.untaint
      end
    end

@original_platform = @platform # for backwards compatibility
    self.platform = Gem::Platform.new @platform
  end

##
  # Reset nil attributes to their default values to make the spec valid

def reset_nil_attributes_to_default
    nil_attributes = self.class.non_nil_attributes.find_all do |name|
      !instance_variable_defined?("@#{name}") || instance_variable_get("@#{name}").nil?
    end

nil_attributes.each do |attribute|
      default = self.default_value attribute

value = case default
              when Time, Numeric, Symbol, true, false, nil then default
              else default.dup
              end

instance_variable_set "@#{attribute}", value
    end

@installed_by_version ||= nil
  end

def warning statement # :nodoc:
    @warnings += 1

alert_warning statement
  end

def raw_require_paths # :nodoc:
    @require_paths
  end

extend Gem::Deprecate

# TODO:
  # deprecate :has_rdoc,            :none,       2011, 10
  # deprecate :has_rdoc?,           :none,       2011, 10
  # deprecate :has_rdoc=,           :none,       2011, 10
  # deprecate :default_executable,  :none,       2011, 10
  # deprecate :default_executable=, :none,       2011, 10
  # deprecate :file_name,           :cache_file, 2011, 10
  # deprecate :full_gem_path,     :cache_file, 2011, 10
end

# DOC: What is this and why is it here, randomly, at the end of this file?
Gem.clear_paths

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