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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.
rubocop:enable Style/MutableConstant
The version number of a specification that does not specify one (i.e. RubyGems 0.7 or earlier).
A message that gets displayed after the gem is installed.
Usage:
spec.post_install_message = "Thanks for installing!"
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.
 
               # File rubygems/specification.rb, line 548
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'
 
               # File rubygems/specification.rb, line 559
def add_runtime_dependency(gem, *requirements)
  if requirements.uniq.size != requirements.size
    warn "WARNING: duplicated #{gem} dependency #{requirements}"
  end
  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'
 
               # File rubygems/specification.rb, line 582
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.
 
               # File rubygems/specification.rb, line 599
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']
 
               # File rubygems/specification.rb, line 615
def extra_rdoc_files
  @extra_rdoc_files ||= []
end
             
            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
 
               # File rubygems/specification.rb, line 460
def platform=(platform)
  if @original_platform.nil? or
     @original_platform == Gem::Platform::RUBY
    @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
             
            Specifies the rdoc options to be used when generating API documentation.
Usage:
spec.rdoc_options << '--title' << 'Rake -- Ruby Make' << '--main' << 'README' << '--line-numbers'
 
               # File rubygems/specification.rb, line 645
def rdoc_options
  @rdoc_options ||= []
end
             
            Paths in the gem to add to $LOAD_PATH when this gem is
activated. If you have an extension you do not need to add
"ext" to the require path, the extension build
process will copy the extension files into “lib” for you.
The default value is "lib"
Usage:
# If all library files are in the root directory... spec.require_paths = ['.']
 
               # File rubygems/specification.rb, line 511
def require_paths=(val)
  @require_paths = Array(val)
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">
Prereleases can also be specified.
Usage:
# This gem will work with 1.8.6 or greater... spec.required_ruby_version = '>= 1.8.6' # Only with final releases of major version 2 where minor version is at least 3 spec.required_ruby_version = '~> 2.3' # Only prereleases or final releases after 2.6.0.preview2 spec.required_ruby_version = '> 2.6.0.preview2' # This gem will work with 2.3.0 or greater, including major version 3, but lesser than 4.0.0 spec.required_ruby_version = '>= 2.3', '< 4'
 
               # File rubygems/specification.rb, line 673
def required_ruby_version=(req)
  @required_ruby_version = Gem::Requirement.create req
end
             
            The RubyGems version required by this gem
 
               # File rubygems/specification.rb, line 680
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'
 
               # File rubygems/specification.rb, line 693
def requirements
  @requirements ||= []
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
A contact email address (or addresses) for this gem
Usage:
spec.email = 'john.jones@example.com' spec.email = ['jack@example.com', 'jill@example.com']
The metadata holds extra data for this gem that may be useful to other consumers and is settable by gem authors.
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"
  "funding_uri"       => "https://example.com/donate"
}
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}
          
          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 spdx.org/licenses/ for the license. Ideally you should pick one that is OSI (Open Source Initiative) 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 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'
 
               # File rubygems/specification.rb, line 345
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']
 
               # File rubygems/specification.rb, line 362
def licenses=(licenses)
  @licenses = Array licenses
end
             
            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"
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]*'].to_a # or without Rake... spec.files = Dir['lib/ *.rb'] + Dir['bin/*'] spec.files += Dir['[A-Z]*'] spec.files.reject! { |fn| fn.include? "CVS" }
 
               # File rubygems/specification.rb, line 256
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
             
            Sets the default executable for this gem.
Deprecated: You must now specify the executable name to Gem.bin_path.
The Gem::Specification version of this gemspec.
Do not set this, it is set automatically when the gem is packaged.
Load custom marshal format, re-initializing defaults as needed
 
               # File rubygems/specification.rb, line 1263
def self._load(str)
  Gem.load_yaml
  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
                  spec.instance_variable_set :@specification_version,
                                             current_version
                  MARSHAL_FIELDS[current_version]
                else
                  MARSHAL_FIELDS[spec.specification_version]
                end
  if array.size < field_count
    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]
  # offset due to rubyforge_project removal
  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
             
            Returns all specifications. This method is discouraged from use. You probably want to use one of the Enumerable methods instead.
 
               # File rubygems/specification.rb, line 877
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.
 
               # File rubygems/specification.rb, line 895
def self.all=(specs)
  @@stubs_by_name = specs.group_by(&:name)
  @@all = @@stubs = specs
end
             
            Return full names of all specs in sorted order.
 
               # File rubygems/specification.rb, line 903
def self.all_names
  self._all.map(&:full_name)
end
             
            Return the list of all array-oriented instance variables.
 
               # File rubygems/specification.rb, line 912
def self.array_attributes
  @@array_attributes.dup
end
             
            Return the list of all instance variables.
 
               # File rubygems/specification.rb, line 921
def self.attribute_names
  @@attributes.dup
end
             
            Returns a Gem::StubSpecification for default gems
 
               # File rubygems/specification.rb, line 817
def self.default_stubs(pattern = "*.gemspec")
  base_dir = Gem.default_dir
  gems_dir = File.join base_dir, "gems"
  gemspec_stubs_in(Gem.default_specifications_dir, pattern) do |path|
    Gem::StubSpecification.default_gemspec_stub(path, base_dir, gems_dir)
  end
end
             
            Return the directories that Specification uses to find specs.
 
               # File rubygems/specification.rb, line 928
def self.dirs
  @@dirs ||= Gem.path.collect do |dir|
    File.join dir.dup.tap(&Gem::UNTAINT), "specifications"
  end
end
             
            Set the directories that Specification uses to find specs. Setting this resets the list of known specs.
 
               # File rubygems/specification.rb, line 938
def self.dirs=(dirs)
  self.reset
  @@dirs = Array(dirs).map {|dir| File.join dir, "specifications" }
end
             
            Enumerate every known spec. See ::dirs= and ::add_spec to set the list of specs.
 
               # File rubygems/specification.rb, line 950
def self.each
  return enum_for(:each) unless block_given?
  self._all.each do |x|
    yield x
  end
end
             
             
               # File rubygems/specification.rb, line 1013
def self.find_active_stub_by_path(path)
  stub = @@active_stub_with_requirable_file[path] ||= (stubs.find do |s|
    s.activated? and s.contains_requirable_file? path
  end || NOT_FOUND)
  stub.this
end
             
            Returns every spec that has the given full_name
 
               # File rubygems/specification.rb, line 972
def self.find_all_by_full_name(full_name)
  stubs.select {|s| s.full_name == full_name }.map(&:to_spec)
end
             
            Returns every spec that matches name and optional
requirements.
 
               # File rubygems/specification.rb, line 961
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
             
            Find the best specification matching a name and
requirements. Raises if the dependency doesn’t resolve to a
valid specification.
 
               # File rubygems/specification.rb, line 980
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.
 
               # File rubygems/specification.rb, line 991
def self.find_by_path(path)
  path = path.dup.freeze
  spec = @@spec_with_requirable_file[path] ||= (stubs.find do |s|
    next unless Gem::BundlerVersionFinder.compatible?(s)
    s.contains_requirable_file? path
  end || NOT_FOUND)
  spec.to_spec
end
             
            Return currently unresolved specs that contain the file matching
path.
 
               # File rubygems/specification.rb, line 1023
def self.find_in_unresolved(path)
  unresolved_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.
 
               # File rubygems/specification.rb, line 1031
def self.find_in_unresolved_tree(path)
  unresolved_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
             
            Return the best specification that contains the file matching
path amongst the specs that are not activated.
 
               # File rubygems/specification.rb, line 1004
def self.find_inactive_by_path(path)
  stub = stubs.find do |s|
    next if s.activated?
    next unless Gem::BundlerVersionFinder.compatible?(s)
    s.contains_requirable_file? path
  end
  stub && stub.to_spec
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.
 
               # File rubygems/specification.rb, line 1058
def self.from_yaml(input)
  Gem.load_yaml
  input = normalize_yaml_input input
  spec = Gem::SafeYAML.safe_load input
  if spec && spec.class == FalseClass
    raise Gem::EndOfYAMLException
  end
  unless Gem::Specification === spec
    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 installed spec for gem name.
 
               # File rubygems/specification.rb, line 1089
def self.latest_spec_for(name)
  latest_specs(true).find {|installed_spec| installed_spec.name == name }
end
             
            Return the latest specs, optionally including prerelease specs if
prerelease is true.
 
               # File rubygems/specification.rb, line 1082
def self.latest_specs(prerelease = false)
  _latest_specs Gem::Specification._all, prerelease
end
             
            Loads Ruby format gemspec from file.
 
               # File rubygems/specification.rb, line 1108
def self.load(file)
  return unless file
  _spec = LOAD_CACHE_MUTEX.synchronize { LOAD_CACHE[file] }
  return _spec if _spec
  file = file.dup.tap(&Gem::UNTAINT)
  return unless File.file?(file)
  code = File.read file, :mode => 'r:UTF-8:-'
  code.tap(&Gem::UNTAINT)
  begin
    _spec = eval code, binding, file
    if Gem::Specification === _spec
      _spec.loaded_from = File.expand_path file.to_s
      LOAD_CACHE_MUTEX.synchronize do
        prev = LOAD_CACHE[file]
        if prev
          _spec = prev
        else
          LOAD_CACHE[file] = _spec
        end
      end
      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
             
            Loads the default specifications. It should be called only once.
 
               # File rubygems/specification.rb, line 865
def self.load_defaults
  each_spec([Gem.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
             
            Specification constructor. Assigns the
default values to the attributes and yields itself for further
initialization.  Optionally takes name and
version.
 
               # File rubygems/specification.rb, line 1984
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
  if platform = Gem.platforms.last and platform != Gem::Platform::RUBY and platform != Gem::Platform.local
    self.platform = platform
  end
  yield self if block_given?
end
             
            Specification attributes that must be non-nil
 
               # File rubygems/specification.rb, line 1150
def self.non_nil_attributes
  @@non_nil_attributes.dup
end
             
            Make sure the YAML specification is properly formatted with dashes
 
               # File rubygems/specification.rb, line 1157
def self.normalize_yaml_input(input)
  result = input.respond_to?(:read) ? input.read : input
  result = "--- " + result unless result.start_with?("--- ")
  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.
 
               # File rubygems/specification.rb, line 1175
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.
 
               # File rubygems/specification.rb, line 1186
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
             
            Is name a required attribute?
 
               # File rubygems/specification.rb, line 1211
def self.required_attribute?(name)
  @@required_attributes.include? name.to_sym
end
             
            Required specification attributes
 
               # File rubygems/specification.rb, line 1218
def self.required_attributes
  @@required_attributes.dup
end
             
            Reset the list of known specs, running pre and post reset hooks registered in Gem.
 
               # File rubygems/specification.rb, line 1226
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?
    w = "W" + "ARN"
    warn "#{w}: Unresolved or ambiguous specs during Gem::Specification.reset:"
    unresolved.values.each do |dep|
      warn "      #{dep}"
      versions = find_all_by_name(dep.name)
      unless versions.empty?
        warn "      Available/installed versions of this gem:"
        versions.each {|s| warn "      - #{s.version}" }
      end
    end
    warn "#{w}: Clearing out unresolved specs. Try 'gem cleanup <gem>'"
    warn "Please report a bug if this causes problems."
    unresolved.clear
  end
  Gem.post_reset_hooks.each {|hook| hook.call }
end
             
            Returns a Gem::StubSpecification for every installed gem
 
               # File rubygems/specification.rb, line 804
def self.stubs
  @@stubs ||= begin
    pattern = "*.gemspec"
    stubs = stubs_for_pattern(pattern, false)
    @@stubs_by_name = stubs.select {|s| Gem::Platform.match_spec? s }.group_by(&:name)
    stubs
  end
end
             
            Returns a Gem::StubSpecification for
installed gem named name only returns stubs that match Gem.platforms
 
               # File rubygems/specification.rb, line 829
def self.stubs_for(name)
  if @@stubs
    @@stubs_by_name[name] || []
  else
    @@stubs_by_name[name] ||= stubs_for_pattern("#{name}-*.gemspec").select do |s|
      s.name == name
    end
  end
end
             
            Dump only crucial instance variables.
 
               # File rubygems/specification.rb, line 1333
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
             
            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.
 
               # File rubygems/specification.rb, line 1424
def abbreviate
  self.files = []
  self.test_files = []
  self.rdoc_options = []
  self.extra_rdoc_files = []
  self.cert_chain = []
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.
 
               # File rubygems/specification.rb, line 1363
def activate
  other = Gem.loaded_specs[self.name]
  if other
    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.
 
               # File rubygems/specification.rb, line 1387
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
    begin
      specs = spec_dep.to_specs
    rescue Gem::MissingSpecError => e
      raise Gem::MissingSpecError.new(e.name, e.requirement, "at: #{self.spec_file}")
    end
    if specs.size == 1
      specs.first.activate
    else
      name = spec_dep.name
      unresolved[name] = unresolved[name].merge spec_dep
    end
  end
  unresolved.delete self.name
end
             
            Returns an array with bindir attached to each executable in the
executables list
 
               # File rubygems/specification.rb, line 1460
def add_bindir(executables)
  return nil if executables.nil?
  if @bindir
    Array(executables).map {|e| File.join(@bindir, e) }
  else
    executables
  end
rescue
  return nil
end
             
            Adds this spec’s require paths to LOAD_PATH, in the proper location.
 
               # File rubygems/specification.rb, line 1499
def add_self_to_load_path
  return if default_gem?
  paths = full_require_paths
  Gem.add_to_load_path(*paths)
end
             
             
               # File rubygems/specification.rb, line 2034
def base_dir
  return Gem.dir unless loaded_from
  @base_dir ||= if default_gem?
                  File.dirname File.dirname File.dirname loaded_from
                else
                  File.dirname File.dirname loaded_from
                end
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.
 
               # File rubygems/specification.rb, line 1529
def bin_dir
  @bin_dir ||= File.join gem_dir, bindir
end
             
            Returns the full path to an executable named name in this gem.
 
               # File rubygems/specification.rb, line 1536
def bin_file(name)
  File.join bin_dir, name
end
             
            Returns the #build_args used to install the gem
 
               # File rubygems/specification.rb, line 1543
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
             
            Returns the full path to the build info directory
 
               # File rubygems/specification.rb, line 1590
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
 
               # File rubygems/specification.rb, line 1598
def build_info_file
  File.join build_info_dir, "#{full_name}.info"
end
             
            Returns the full path to the cache directory containing this spec’s cached gem.
 
               # File rubygems/specification.rb, line 1606
def cache_dir
  @cache_dir ||= File.join base_dir, "cache"
end
             
            Returns the full path to the cached gem for this spec.
 
               # File rubygems/specification.rb, line 1613
def cache_file
  @cache_file ||= File.join cache_dir, "#{full_name}.gem"
end
             
            Return any possible conflicts against the currently loaded specs.
 
               # File rubygems/specification.rb, line 1620
def conflicts
  conflicts = {}
  self.runtime_dependencies.each do |dep|
    spec = Gem.loaded_specs[dep.name]
    if spec and not spec.satisfies_requirement? dep
      (conflicts[spec] ||= []) << dep
    end
  end
  env_req = Gem.env_requirement(name)
  (conflicts[self] ||= []) << env_req unless env_req.satisfied_by? version
  conflicts
end
             
            The date this gem was created.
If SOURCE_DATE_EPOCH is set as an environment variable, use that to support reproducible builds; otherwise, default to the current UTC date.
Details on SOURCE_DATE_EPOCH: reproducible-builds.org/specs/source-date-epoch/
 
               # File rubygems/specification.rb, line 1666
def date
  @date ||= Time.utc(*Gem.source_date_epoch.utc.to_a[3..5].reverse)
end
             
            The date this gem was created
DO NOT set this, it is set automatically when the gem is packaged.
 
               # File rubygems/specification.rb, line 1686
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
              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
              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 value for specification attribute name
 
               # File rubygems/specification.rb, line 1732
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.
 
               # File rubygems/specification.rb, line 1742
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]]
 
               # File rubygems/specification.rb, line 1752
def dependent_gems(check_dev=true)
  out = []
  Gem::Specification.each do |spec|
    deps = check_dev ? spec.dependencies : spec.runtime_dependencies
    deps.each do |dep|
      if self.satisfies_requirement?(dep)
        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.
 
               # File rubygems/specification.rb, line 1772
def dependent_specs
  runtime_dependencies.map {|dep| dep.to_specs }.flatten
end
             
            A detailed description of this gem. See also summary
 
               # File rubygems/specification.rb, line 1779
def description=(str)
  @description = str.to_s
end
             
            List of dependencies that are used for development
 
               # File rubygems/specification.rb, line 1786
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"
 
               # File rubygems/specification.rb, line 1798
def doc_dir(type = nil)
  @doc_dir ||= File.join base_dir, 'doc', full_name
  if type
    File.join @doc_dir, type
  else
    @doc_dir
  end
end
             
            Singular accessor for executables
 
               # File rubygems/specification.rb, line 1836
def executable
  val = executables and val.first
end
             
            Singular accessor for executables
 
               # File rubygems/specification.rb, line 1843
def executable=(o)
  self.executables = [o]
end
             
            Sets executables to value, ensuring it is an array.
 
               # File rubygems/specification.rb, line 1850
def executables=(value)
  @executables = Array(value)
end
             
            Sets extensions to extensions, ensuring it is an array.
 
               # File rubygems/specification.rb, line 1857
def extensions=(extensions)
  @extensions = Array extensions
end
             
            Sets #extra_rdoc_files
to files, ensuring it is an array.
 
               # File rubygems/specification.rb, line 1864
def extra_rdoc_files=(files)
  @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"
 
               # File rubygems/specification.rb, line 1873
def file_name
  "#{full_name}.gem"
end
             
            Sets files to files, ensuring it is an array.
 
               # File rubygems/specification.rb, line 1880
def files=(files)
  @files = Array files
end
             
            Creates a duplicate spec without large blobs that aren’t used at runtime.
 
               # File rubygems/specification.rb, line 1898
def for_cache
  spec = dup
  spec.files = nil
  spec.test_files = nil
  spec
end
             
             
               # File rubygems/specification.rb, line 1907
def full_name
  @full_name ||= super
end
             
             
               # File rubygems/specification.rb, line 1918
def gems_dir
  @gems_dir ||= File.join(base_dir, "gems")
end
             
            Return true if there are possible conflicts against the currently loaded specs.
 
               # File rubygems/specification.rb, line 1646
def has_conflicts?
  return true unless Gem.env_requirement(name).satisfied_by?(version)
  self.dependencies.any? do |dep|
    if dep.runtime?
      spec = Gem.loaded_specs[dep.name]
      spec and not spec.satisfies_requirement? dep
    else
      false
    end
  end
end
             
            Duplicates ::array_attributes
from other_spec so state isn’t shared.
 
               # File rubygems/specification.rb, line 2012
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
        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
             
             
               # File rubygems/specification.rb, line 2593
def keep_only_files_and_directories
  @executables.delete_if      {|x| File.directory?(File.join(@bindir, x)) }
  @extensions.delete_if       {|x| File.directory?(x) && !File.symlink?(x) }
  @extra_rdoc_files.delete_if {|x| File.directory?(x) && !File.symlink?(x) }
  @files.delete_if            {|x| File.directory?(x) && !File.symlink?(x) }
  @test_files.delete_if       {|x| File.directory?(x) && !File.symlink?(x) }
end
             
            Files in the Gem under one of the require_paths
 
               # File rubygems/specification.rb, line 2065
def lib_files
  @files.select do |file|
    require_paths.any? do |path|
      file.start_with? path
    end
  end
end
             
            Singular accessor for licenses
 
               # File rubygems/specification.rb, line 2076
def license
  licenses.first
end
             
            Plural accessor for setting licenses
See license= for details
 
               # File rubygems/specification.rb, line 2085
def licenses
  @licenses ||= []
end
             
            Sets the #rubygems_version to the current RubyGems version.
 
               # File rubygems/specification.rb, line 2103
def mark_version
  @rubygems_version = Gem::VERSION
end
             
            Is this specification missing its extensions? When this returns true you probably want to build_extensions
 
               # File rubygems/specification.rb, line 2129
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
             
            Return a NameTuple that represents this Specification
 
               # File rubygems/specification.rb, line 2161
def name_tuple
  Gem::NameTuple.new name, version, original_platform
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.
 
               # File rubygems/specification.rb, line 2144
def normalize
  if defined?(@extra_rdoc_files) and @extra_rdoc_files
    @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
             
            The platform this gem runs on. See Gem::Platform for details.
 
               # File rubygems/specification.rb, line 2187
def platform
  @new_platform ||= Gem::Platform::RUBY
end
             
            Sets #rdoc_options
to value, ensuring it is an array.
 
               # File rubygems/specification.rb, line 2254
def rdoc_options=(options)
  @rdoc_options = Array options
end
             
            Singular accessor for require_paths
 
               # File rubygems/specification.rb, line 2261
def require_path
  val = require_paths and val.first
end
             
            Singular accessor for require_paths
 
               # File rubygems/specification.rb, line 2268
def require_path=(path)
  self.require_paths = Array(path)
end
             
            Set requirements to req, ensuring it is an array.
 
               # File rubygems/specification.rb, line 2275
def requirements=(req)
  @requirements = Array req
end
             
            Reset nil attributes to their default values to make the spec valid
 
               # File rubygems/specification.rb, line 2655
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
             
            Returns the full path to this spec’s ri directory.
 
               # File rubygems/specification.rb, line 2286
def ri_dir
  @ri_dir ||= File.join base_dir, 'ri', full_name
end
             
            List of dependencies that will automatically be activated at runtime.
 
               # File rubygems/specification.rb, line 2319
def runtime_dependencies
  dependencies.select(&:runtime?)
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.
 
               # File rubygems/specification.rb, line 1437
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.
 
               # File rubygems/specification.rb, line 1447
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.to_s
end
             
            Checks if this specification meets the requirement of
dependency.
 
               # File rubygems/specification.rb, line 2335
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.
 
               # File rubygems/specification.rb, line 2343
def sort_obj
  [@name, @version, @new_platform == Gem::Platform::RUBY ? -1 : 1]
end
             
            Returns the full path to the directory containing this spec’s gemspec file. eg: /usr/local/lib/ruby/gems/1.8/specifications
 
               # File rubygems/specification.rb, line 2358
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
 
               # File rubygems/specification.rb, line 2366
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"
 
               # File rubygems/specification.rb, line 2375
def spec_name
  "#{full_name}.gemspec"
end
             
             
               # File rubygems/specification.rb, line 2633
def stubbed?
  false
end
             
            A short summary of this gem’s description.
 
               # File rubygems/specification.rb, line 2382
def summary=(str)
  @summary = str.to_s.strip.
    gsub(/(\w-)\n[ \t]*(\w)/, '\1\2').gsub(/\n[ \t]*/, " ") # so. weird.
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.
 
               # File rubygems/specification.rb, line 2425
def to_ruby
  require_relative 'openssl'
  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
    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) || self.class.required_attribute?(attr_name)
      result << "  s.#{attr_name} = #{ruby_code current_value}" unless defined?(OpenSSL::PKey::RSA) && current_value.is_a?(OpenSSL::PKey::RSA)
    end
  end
  if @installed_by_version
    result << nil
    result << "  s.installed_by_version = \"#{Gem::VERSION}\" if s.respond_to? :installed_by_version"
  end
  unless dependencies.empty?
    result << nil
    result << "  if s.respond_to? :specification_version then"
    result << "    s.specification_version = #{specification_version}"
    result << "  end"
    result << nil
    result << "  if s.respond_to? :add_runtime_dependency 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"
  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.
 
               # File rubygems/specification.rb, line 2510
def to_ruby_for_cache
  for_cache.to_ruby
end
             
            Returns self
 
               # File rubygems/specification.rb, line 2521
def to_spec
  self
end
             
            Recursively walk dependencies of this spec, executing the
block for each hop.
 
               # File rubygems/specification.rb, line 2552
def traverse(trail = [], visited = {}, &block)
  trail.push(self)
  begin
    dependencies.each do |dep|
      next unless dep.runtime?
      dep.matching_specs(true).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..
 
               # File rubygems/specification.rb, line 2585
def validate(packaging = true, strict = false)
  normalize
  validation_policy = Gem::SpecificationPolicy.new(self)
  validation_policy.packaging = packaging
  validation_policy.validate(strict)
end
             
             
               # File rubygems/specification.rb, line 2606
def validate_dependencies
  Gem::SpecificationPolicy.new(self).validate_dependencies
end
             
             
               # File rubygems/specification.rb, line 2601
def validate_metadata
  Gem::SpecificationPolicy.new(self).validate_metadata
end
             
             
               # File rubygems/specification.rb, line 2611
def validate_permissions
  Gem::SpecificationPolicy.new(self).validate_permissions
end
             
            Set the version to version, potentially also setting #required_rubygems_version
if version indicates it is a prerelease.
 
               # File rubygems/specification.rb, line 2621
def version=(version)
  @version = Gem::Version.create(version)
  # skip to set required_ruby_version when pre-released rubygems.
  # It caused to raise CircularDependencyError
  if @version.prerelease? && (@name.nil? || @name.strip != "rubygems")
    self.required_rubygems_version = '> 1.3.1'
  end
  invalidate_memoized_attributes
  return @version
end