class Gem::Specification

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.

Constants

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

Public Instance Methods

removed_method_calls() click to toggle source

# File lib/rubygems/specification.rb, line 201
def removed_method_calls
  @removed_method_calls ||= []
end

Optional gemspec attributes

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Attributes

bindir[RW]

The path in the gem for executable scripts. Usually 'bin'

Usage:

spec.bindir = 'bin'

cert_chain[RW]

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

post_install_message[RW]

A message that gets displayed after the gem is installed.

Usage:

spec.post_install_message = "Thanks for installing!"

required_rubygems_version[R]

The RubyGems version required by this gem

rubygems_version[RW]

The version of RubyGems used to create this gem.

Do not set this, it is set automatically when the gem is packaged.

signing_key[RW]

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

Public Instance Methods

add_development_dependency(gem, *requirements) click to toggle source

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 lib/rubygems/specification.rb, line 562
def add_development_dependency(gem, *requirements)
  add_dependency_with_type(gem, :development, requirements)
end

add_runtime_dependency(gem, *requirements) click to toggle source

Adds a runtime dependency named gem with requirements to this gem.

Usage:

spec.add_runtime_dependency 'example', '~> 1.1', '>= 1.1.4'

# File lib/rubygems/specification.rb, line 573
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

Also aliased as: add_dependency

author=(o) click to toggle source

Singular (alternative) writer for authors

Usage:

spec.author = 'John Jones'

# File lib/rubygems/specification.rb, line 428
def author=(o)
  self.authors = [o]
end

executables() click to toggle source

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 lib/rubygems/specification.rb, line 596
def executables
  @executables ||= []
end

extensions() click to toggle source

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 lib/rubygems/specification.rb, line 613
def extensions
  @extensions ||= []
end

extra_rdoc_files() click to toggle source

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 lib/rubygems/specification.rb, line 629
def extra_rdoc_files
  @extra_rdoc_files ||= []
end

platform=(platform) click to toggle source

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 lib/rubygems/specification.rb, line 479
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

rdoc_options() click to toggle source

Specifies the rdoc options to be used when generating API documentation.

Usage:

spec.rdoc_options << '--title' << 'Rake -- Ruby Make' <<
  '--main' << 'README' <<
  '--line-numbers'

# File lib/rubygems/specification.rb, line 659
def rdoc_options
  @rdoc_options ||= []
end

require_paths=(val) click to toggle source

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 lib/rubygems/specification.rb, line 530
def require_paths=(val)
  @require_paths = Array(val)
end

required_ruby_version=(req) click to toggle source

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 lib/rubygems/specification.rb, line 687
def required_ruby_version=(req)
  @required_ruby_version = Gem::Requirement.create req
end

required_rubygems_version=(req) click to toggle source

The RubyGems version required by this gem

# File lib/rubygems/specification.rb, line 694
def required_rubygems_version=(req)
  @required_rubygems_version = Gem::Requirement.create req
end

requirements() click to toggle source

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 lib/rubygems/specification.rb, line 707
def requirements
  @requirements ||= []
end

Recommended gemspec attributes

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Attributes

description[R]

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

email[RW]

A contact email address (or addresses) for this gem

Usage:

spec.email = 'john.jones@example.com'
spec.email = ['jack@example.com', 'jill@example.com']

homepage[RW]

The URL of this gem's home page

Usage:

spec.homepage = 'https://github.com/ruby/rake'

metadata[RW]

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}

required_ruby_version[R]

The version of Ruby required by this gem

Usage:

spec.required_ruby_version = '>= 2.7.0'

Public Instance Methods

license=(o) click to toggle source

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 can also use a custom license file along with your gemspec and specify a LicenseRef-<idstring>, where idstring is the name of the file containing the license text.

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 right to use the code for any purpose.

You can set multiple licenses with licenses=

Usage:

spec.license = 'MIT'

# File lib/rubygems/specification.rb, line 364
def license=(o)
  self.licenses = [o]
end

licenses=(licenses) click to toggle source

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 lib/rubygems/specification.rb, line 381
def licenses=(licenses)
  @licenses = Array licenses
end

Required gemspec attributes

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Attributes

name[RW]

This gem's name.

Usage:

spec.name = 'rake'

summary[R]

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"

version[R]

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'

Public Instance Methods

authors=(value) click to toggle source

A list of authors for this gem.

Alternatively, a single author can be specified by assigning a string to `spec.author`

Usage:

spec.authors = ['John Jones', 'Mary Smith']

# File lib/rubygems/specification.rb, line 283
def authors=(value)
  @authors = Array(value).flatten.grep(String)
end

files() click to toggle source

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 lib/rubygems/specification.rb, line 262
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

Specification internals

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Attributes

activated[RW]

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

activated?[RW]

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

default_executable[W]

Sets the default executable for this gem.

Deprecated: You must now specify the executable name to Gem.bin_path.

specification_version[RW]

The Gem::Specification version of this gemspec.

Do not set this, it is set automatically when the gem is packaged.

Public Class Methods

_load(str) click to toggle source

Load custom marshal format, re-initializing defaults as needed

# File lib/rubygems/specification.rb, line 1265
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

all() click to toggle source

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

# File lib/rubygems/specification.rb, line 883
def self.all
  warn "NOTE: Specification.all called from #{caller.first}" unless
    Gem::Deprecate.skip
  _all
end

all=(specs) click to toggle source

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 lib/rubygems/specification.rb, line 901
def self.all=(specs)
  @@stubs_by_name = specs.group_by(&:name)
  @@all = @@stubs = specs
end

all_names() click to toggle source

Return full names of all specs in sorted order.

# File lib/rubygems/specification.rb, line 909
def self.all_names
  self._all.map(&:full_name)
end

array_attributes() click to toggle source

Return the list of all array-oriented instance variables.

# File lib/rubygems/specification.rb, line 918
def self.array_attributes
  @@array_attributes.dup
end

attribute_names() click to toggle source

Return the list of all instance variables.

# File lib/rubygems/specification.rb, line 927
def self.attribute_names
  @@attributes.dup
end

default_stubs(pattern = "*.gemspec") click to toggle source

Returns a Gem::StubSpecification for default gems

# File lib/rubygems/specification.rb, line 823
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

dirs() click to toggle source

Return the directories that Specification uses to find specs.

# File lib/rubygems/specification.rb, line 934
def self.dirs
  @@dirs ||= Gem.path.collect do |dir|
    File.join dir.dup.tap(&Gem::UNTAINT), "specifications"
  end
end

dirs=(dirs) click to toggle source

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

# File lib/rubygems/specification.rb, line 944
def self.dirs=(dirs)
  self.reset

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

each() { |x| ... } click to toggle source

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

# File lib/rubygems/specification.rb, line 956
def self.each
  return enum_for(:each) unless block_given?

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

find_active_stub_by_path(path) click to toggle source

# File lib/rubygems/specification.rb, line 1019
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

find_all_by_full_name(full_name) click to toggle source

Returns every spec that has the given full_name

# File lib/rubygems/specification.rb, line 978
def self.find_all_by_full_name(full_name)
  stubs.select {|s| s.full_name == full_name }.map(&:to_spec)
end

find_all_by_name(name, *requirements) click to toggle source

Returns every spec that matches name and optional requirements.

# File lib/rubygems/specification.rb, line 967
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_by_name(name, *requirements) click to toggle source

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

# File lib/rubygems/specification.rb, line 986
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

find_by_path(path) click to toggle source

Return the best specification that contains the file matching path.

# File lib/rubygems/specification.rb, line 997
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

find_in_unresolved(path) click to toggle source

Return currently unresolved specs that contain the file matching path.

# File lib/rubygems/specification.rb, line 1029
def self.find_in_unresolved(path)
  unresolved_specs.find_all {|spec| spec.contains_requirable_file? path }
end

find_in_unresolved_tree(path) click to toggle source

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

# File lib/rubygems/specification.rb, line 1037
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

find_inactive_by_path(path) click to toggle source

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

# File lib/rubygems/specification.rb, line 1010
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

from_yaml(input) click to toggle source

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 lib/rubygems/specification.rb, line 1064
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

latest_spec_for(name) click to toggle source

Return the latest installed spec for gem name.

# File lib/rubygems/specification.rb, line 1095
def self.latest_spec_for(name)
  latest_specs(true).find {|installed_spec| installed_spec.name == name }
end

latest_specs(prerelease = false) click to toggle source

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

# File lib/rubygems/specification.rb, line 1088
def self.latest_specs(prerelease = false)
  _latest_specs Gem::Specification._all, prerelease
end

load(file) click to toggle source

Loads Ruby format gemspec from file.

# File lib/rubygems/specification.rb, line 1114
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

load_defaults() click to toggle source

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

# File lib/rubygems/specification.rb, line 871
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

new(name = nil, version = nil) { |self| ... } click to toggle source

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

Calls superclass method Gem::BasicSpecification::new

# File lib/rubygems/specification.rb, line 1979
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

non_nil_attributes() click to toggle source

Specification attributes that must be non-nil

# File lib/rubygems/specification.rb, line 1156
def self.non_nil_attributes
  @@non_nil_attributes.dup
end

normalize_yaml_input(input) click to toggle source

Make sure the YAML specification is properly formatted with dashes

# File lib/rubygems/specification.rb, line 1163
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

outdated() click to toggle source

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 lib/rubygems/specification.rb, line 1181
def self.outdated
  outdated_and_latest_version.map {|local, _| local.name }
end

outdated_and_latest_version() { |local_spec, latest_remote| ... } click to toggle source

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 lib/rubygems/specification.rb, line 1192
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

required_attribute?(name) click to toggle source

Is name a required attribute?

# File lib/rubygems/specification.rb, line 1217
def self.required_attribute?(name)
  @@required_attributes.include? name.to_sym
end

required_attributes() click to toggle source

Required specification attributes

# File lib/rubygems/specification.rb, line 1224
def self.required_attributes
  @@required_attributes.dup
end

reset() click to toggle source

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

# File lib/rubygems/specification.rb, line 1232
def self.reset
  @@dirs = nil
  Gem.pre_reset_hooks.each {|hook| hook.call }
  clear_specs
  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

stubs() click to toggle source

Returns a Gem::StubSpecification for every installed gem

# File lib/rubygems/specification.rb, line 810
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

stubs_for(name) click to toggle source

Returns a Gem::StubSpecification for installed gem named name only returns stubs that match Gem.platforms

# File lib/rubygems/specification.rb, line 835
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

unresolved_deps() click to toggle source

DOC: This method needs documented or nodoc'd

# File lib/rubygems/specification.rb, line 1258
def self.unresolved_deps
  @unresolved_deps ||= Hash.new {|h, n| h[n] = Gem::Dependency.new n }
end

Private Class Methods

gemspec_stubs_in(dir, pattern) { |path| ... } click to toggle source

# File lib/rubygems/specification.rb, line 779
def self.gemspec_stubs_in(dir, pattern)
  Gem::Util.glob_files_in_dir(pattern, dir).map {|path| yield path }.select(&:valid?)
end

installed_stubs(dirs, pattern) click to toggle source

# File lib/rubygems/specification.rb, line 784
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

unresolved_specs() click to toggle source

# File lib/rubygems/specification.rb, line 1051
def self.unresolved_specs
  unresolved_deps.values.map {|dep| dep.to_specs }.flatten
end

Public Instance Methods

_dump(limit) click to toggle source

Dump only crucial instance variables.

# File lib/rubygems/specification.rb, line 1335
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() click to toggle source

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 lib/rubygems/specification.rb, line 1426
def abbreviate
  self.files = []
  self.test_files = []
  self.rdoc_options = []
  self.extra_rdoc_files = []
  self.cert_chain = []
end

activate() click to toggle source

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 lib/rubygems/specification.rb, line 1365
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_dependencies() click to toggle source

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

# File lib/rubygems/specification.rb, line 1389
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

add_bindir(executables) click to toggle source

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

# File lib/rubygems/specification.rb, line 1462
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

add_dependency(gem, *requirements)

Alias for: add_runtime_dependency

add_self_to_load_path() click to toggle source

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

# File lib/rubygems/specification.rb, line 1501
def add_self_to_load_path
  return if default_gem?

  paths = full_require_paths

  Gem.add_to_load_path(*paths)
end

author() click to toggle source

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

# File lib/rubygems/specification.rb, line 1512
def author
  val = authors and val.first
end

authors() click to toggle source

The list of author names who wrote this gem.

spec.authors = ['Chad Fowler', 'Jim Weirich', 'Rich Kilmer']

# File lib/rubygems/specification.rb, line 1521
def authors
  @authors ||= []
end

base_dir() click to toggle source

# File lib/rubygems/specification.rb, line 2029
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

bin_dir() click to toggle source

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 lib/rubygems/specification.rb, line 1531
def bin_dir
  @bin_dir ||= File.join gem_dir, bindir
end

bin_file(name) click to toggle source

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

# File lib/rubygems/specification.rb, line 1538
def bin_file(name)
  File.join bin_dir, name
end

build_args() click to toggle source

Returns the build_args used to install the gem

# File lib/rubygems/specification.rb, line 1545
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

build_info_dir() click to toggle source

Returns the full path to the build info directory

# File lib/rubygems/specification.rb, line 1591
def build_info_dir
  File.join base_dir, "build_info"
end

build_info_file() click to toggle source

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

# File lib/rubygems/specification.rb, line 1599
def build_info_file
  File.join build_info_dir, "#{full_name}.info"
end

cache_dir() click to toggle source

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

# File lib/rubygems/specification.rb, line 1607
def cache_dir
  @cache_dir ||= File.join base_dir, "cache"
end

cache_file() click to toggle source

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

# File lib/rubygems/specification.rb, line 1614
def cache_file
  @cache_file ||= File.join cache_dir, "#{full_name}.gem"
end

conflicts() click to toggle source

Return any possible conflicts against the currently loaded specs.

# File lib/rubygems/specification.rb, line 1621
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

date() click to toggle source

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 lib/rubygems/specification.rb, line 1667
def date
  @date ||= Time.utc(*Gem.source_date_epoch.utc.to_a[3..5].reverse)
end

date=(date) click to toggle source

The date this gem was created

DO NOT set this, it is set automatically when the gem is packaged.

# File lib/rubygems/specification.rb, line 1687
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)
            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

default_value(name) click to toggle source

The default value for specification attribute name

# File lib/rubygems/specification.rb, line 1727
def default_value(name)
  @@default_value[name]
end

dependencies() click to toggle source

A list of Gem::Dependency objects this gem depends on.

Use add_dependency or add_development_dependency to add dependencies to a gem.

# File lib/rubygems/specification.rb, line 1737
def dependencies
  @dependencies ||= []
end

dependent_gems(check_dev=true) click to toggle source

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 lib/rubygems/specification.rb, line 1747
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

dependent_specs() click to toggle source

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

# File lib/rubygems/specification.rb, line 1767
def dependent_specs
  runtime_dependencies.map {|dep| dep.to_specs }.flatten
end

description=(str) click to toggle source

A detailed description of this gem. See also summary

# File lib/rubygems/specification.rb, line 1774
def description=(str)
  @description = str.to_s
end

development_dependencies() click to toggle source

List of dependencies that are used for development

# File lib/rubygems/specification.rb, line 1781
def development_dependencies
  dependencies.select {|d| d.type == :development }
end

doc_dir(type = nil) click to toggle source

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 lib/rubygems/specification.rb, line 1793
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

executable() click to toggle source

Singular accessor for executables

# File lib/rubygems/specification.rb, line 1831
def executable
  val = executables and val.first
end

executable=(o) click to toggle source

Singular accessor for executables

# File lib/rubygems/specification.rb, line 1838
def executable=(o)
  self.executables = [o]
end

executables=(value) click to toggle source

Sets executables to value, ensuring it is an array.

# File lib/rubygems/specification.rb, line 1845
def executables=(value)
  @executables = Array(value)
end

extensions=(extensions) click to toggle source

Sets extensions to extensions, ensuring it is an array.

# File lib/rubygems/specification.rb, line 1852
def extensions=(extensions)
  @extensions = Array extensions
end

extra_rdoc_files=(files) click to toggle source

Sets extra_rdoc_files to files, ensuring it is an array.

# File lib/rubygems/specification.rb, line 1859
def extra_rdoc_files=(files)
  @extra_rdoc_files = Array files
end

file_name() click to toggle source

The default (generated) file name of the gem. See also spec_name.

spec.file_name # => "example-1.0.gem"

# File lib/rubygems/specification.rb, line 1868
def file_name
  "#{full_name}.gem"
end

files=(files) click to toggle source

Sets files to files, ensuring it is an array.

# File lib/rubygems/specification.rb, line 1875
def files=(files)
  @files = Array files
end

for_cache() click to toggle source

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

# File lib/rubygems/specification.rb, line 1893
def for_cache
  spec = dup

  spec.files = nil
  spec.test_files = nil

  spec
end

full_name() click to toggle source

Calls superclass method Gem::BasicSpecification#full_name

# File lib/rubygems/specification.rb, line 1902
def full_name
  @full_name ||= super
end

gems_dir() click to toggle source

# File lib/rubygems/specification.rb, line 1913
def gems_dir
  @gems_dir ||= File.join(base_dir, "gems")
end

has_conflicts?() click to toggle source

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

# File lib/rubygems/specification.rb, line 1647
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

initialize_copy(other_spec) click to toggle source

Duplicates array_attributes from other_spec so state isn't shared.

# File lib/rubygems/specification.rb, line 2007
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

keep_only_files_and_directories() click to toggle source

# File lib/rubygems/specification.rb, line 2591
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

lib_files() click to toggle source

Files in the Gem under one of the require_paths

# File lib/rubygems/specification.rb, line 2060
def lib_files
  @files.select do |file|
    require_paths.any? do |path|
      file.start_with? path
    end
  end
end

license() click to toggle source

Singular accessor for licenses

# File lib/rubygems/specification.rb, line 2071
def license
  licenses.first
end

licenses() click to toggle source

Plural accessor for setting licenses

See license= for details

# File lib/rubygems/specification.rb, line 2080
def licenses
  @licenses ||= []
end

mark_version() click to toggle source

Sets the rubygems_version to the current RubyGems version.

# File lib/rubygems/specification.rb, line 2098
def mark_version
  @rubygems_version = Gem::VERSION
end

missing_extensions?() click to toggle source

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

# File lib/rubygems/specification.rb, line 2124
def missing_extensions?
  return false if extensions.empty?
  return false if default_gem?
  return false if File.exist? gem_build_complete_path

  true
end

name_tuple() click to toggle source

Return a NameTuple that represents this Specification

# File lib/rubygems/specification.rb, line 2155
def name_tuple
  Gem::NameTuple.new name, version, original_platform
end

normalize() click to toggle source

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 lib/rubygems/specification.rb, line 2138
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

platform() click to toggle source

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

# File lib/rubygems/specification.rb, line 2181
def platform
  @new_platform ||= Gem::Platform::RUBY
end

rdoc_options=(options) click to toggle source

Sets rdoc_options to value, ensuring it is an array.

# File lib/rubygems/specification.rb, line 2248
def rdoc_options=(options)
  @rdoc_options = Array options
end

require_path() click to toggle source

Singular accessor for require_paths

# File lib/rubygems/specification.rb, line 2255
def require_path
  val = require_paths and val.first
end

require_path=(path) click to toggle source

Singular accessor for require_paths

# File lib/rubygems/specification.rb, line 2262
def require_path=(path)
  self.require_paths = Array(path)
end

requirements=(req) click to toggle source

Set requirements to req, ensuring it is an array.

# File lib/rubygems/specification.rb, line 2269
def requirements=(req)
  @requirements = Array req
end

reset_nil_attributes_to_default() click to toggle source

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

# File lib/rubygems/specification.rb, line 2653
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

ri_dir() click to toggle source

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

# File lib/rubygems/specification.rb, line 2280
def ri_dir
  @ri_dir ||= File.join base_dir, 'ri', full_name
end

runtime_dependencies() click to toggle source

List of dependencies that will automatically be activated at runtime.

# File lib/rubygems/specification.rb, line 2313
def runtime_dependencies
  dependencies.select(&:runtime?)
end

sanitize() click to toggle source

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 lib/rubygems/specification.rb, line 1439
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_string(string) click to toggle source

Sanitize a single string.

# File lib/rubygems/specification.rb, line 1449
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

satisfies_requirement?(dependency) click to toggle source

Checks if this specification meets the requirement of dependency.

# File lib/rubygems/specification.rb, line 2329
def satisfies_requirement?(dependency)
  return @name == dependency.name &&
    dependency.requirement.satisfied_by?(@version)
end

sort_obj() click to toggle source

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

# File lib/rubygems/specification.rb, line 2337
def sort_obj
  [@name, @version, @new_platform == Gem::Platform::RUBY ? -1 : 1]
end

spec_dir() click to toggle source

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

# File lib/rubygems/specification.rb, line 2352
def spec_dir
  @spec_dir ||= File.join base_dir, "specifications"
end

spec_file() click to toggle source

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

# File lib/rubygems/specification.rb, line 2360
def spec_file
  @spec_file ||= File.join spec_dir, "#{full_name}.gemspec"
end

spec_name() click to toggle source

The default name of the gemspec. See also file_name

spec.spec_name # => "example-1.0.gemspec"

# File lib/rubygems/specification.rb, line 2369
def spec_name
  "#{full_name}.gemspec"
end

stubbed?() click to toggle source

# File lib/rubygems/specification.rb, line 2631
def stubbed?
  false
end

summary=(str) click to toggle source

A short summary of this gem's description.

# File lib/rubygems/specification.rb, line 2376
def summary=(str)
  @summary = str.to_s.strip.
    gsub(/(\w-)\n[ \t]*(\w)/, '\1\2').gsub(/\n[ \t]*/, " ") # so. weird.
end

to_ruby() click to toggle source

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 lib/rubygems/specification.rb, line 2419
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
    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,
    :signing_key,
  ]

  @@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}"
    end
  end

  if String === signing_key
    result << "  s.signing_key = #{signing_key.dump}.freeze"
  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

to_ruby_for_cache() click to toggle source

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

See to_ruby.

# File lib/rubygems/specification.rb, line 2508
def to_ruby_for_cache
  for_cache.to_ruby
end

to_spec() click to toggle source

Returns self

# File lib/rubygems/specification.rb, line 2519
def to_spec
  self
end

traverse(trail = [], visited = {}, &block) click to toggle source

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

# File lib/rubygems/specification.rb, line 2550
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

validate(packaging = true, strict = false) click to toggle source

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 lib/rubygems/specification.rb, line 2583
def validate(packaging = true, strict = false)
  normalize

  validation_policy = Gem::SpecificationPolicy.new(self)
  validation_policy.packaging = packaging
  validation_policy.validate(strict)
end

validate_dependencies() click to toggle source

# File lib/rubygems/specification.rb, line 2604
def validate_dependencies
  Gem::SpecificationPolicy.new(self).validate_dependencies
end

validate_metadata() click to toggle source

# File lib/rubygems/specification.rb, line 2599
def validate_metadata
  Gem::SpecificationPolicy.new(self).validate_metadata
end

validate_permissions() click to toggle source

# File lib/rubygems/specification.rb, line 2609
def validate_permissions
  Gem::SpecificationPolicy.new(self).validate_permissions
end

version=(version) click to toggle source

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

# File lib/rubygems/specification.rb, line 2619
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

Private Instance Methods

add_dependency_with_type(dependency, type, requirements) click to toggle source

Adds a dependency on gem dependency with type type that requires requirements. Valid types are currently :runtime and :development.

# File lib/rubygems/specification.rb, line 1479
def add_dependency_with_type(dependency, type, requirements)
  requirements = if requirements.empty?
                   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

find_all_satisfiers(dep) { |spec| ... } click to toggle source

Finds all gems that satisfy dep

# File lib/rubygems/specification.rb, line 1882
def find_all_satisfiers(dep)
  Gem::Specification.each do |spec|
    yield spec if spec.satisfies_requirement? dep
  end
end

invalidate_memoized_attributes() click to toggle source

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

# File lib/rubygems/specification.rb, line 2042
def invalidate_memoized_attributes
  @full_name = nil
  @cache_file = nil
end

ruby_code(obj) click to toggle source

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

# File lib/rubygems/specification.rb, line 2288
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

same_attributes?(spec) click to toggle source

True if this gem has the same attributes as other.

# File lib/rubygems/specification.rb, line 2320
def same_attributes?(spec)
  @@attributes.all? {|name, default| self.send(name) == spec.send(name) }
end