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'
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).

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.

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
metadata[RW]

:attr_accessor: metadata

The metadata holds extra data for this gem that may be useful to other consumers and is settable by gem authors without requiring an update to the rubygems software.

Metadata items have the following restrictions:

  • The metadata must be a Hash object

  • All keys and values must be Strings

  • Keys can be a maximum of 128 bytes and values can be a maximum of 1024 bytes

  • All strings must be UTF-8, no binary data is allowed

To add metadata for the location of a issue tracker:

s.metadata = { "issue_tracker" => "https://example/issues" }
post_install_message[RW]

A message that gets displayed after the gem is installed.

Usage:

spec.post_install_message = "Thanks for installing!"
required_ruby_version[R]

The version of Ruby required by this gem

required_rubygems_version[R]

The RubyGems version required by this gem

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 475
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 486
def add_runtime_dependency(gem, *requirements)
  add_dependency_with_type(gem, :runtime, *requirements)
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 505
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 522
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 538
def extra_rdoc_files
  @extra_rdoc_files ||= []
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 618
def rdoc_options
  @rdoc_options ||= []
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">

Because patch-level is taken into account, be very careful specifying using `<=`: `<= 2.2.2` will not match any patch-level of 2.2.2 after the `p0` release. It is much safer to specify `< 2.2.3` instead

Usage:

# This gem will work with 1.8.6 or greater...
spec.required_ruby_version = '>= 1.8.6'

# Only with ruby 2.0.x
spec.required_ruby_version = '~> 2.0'

# Only with ruby between 2.2.0 and 2.2.2
spec.required_ruby_version = ['>= 2.2.0', '< 2.2.3']
# File lib/rubygems/specification.rb, line 645
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 652
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 665
def requirements
  @requirements ||= []
end

Recommended gemspec attributes

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Attributes

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'

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 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 lib/rubygems/specification.rb, line 587
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 605
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'
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.

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

author=(o) click to toggle source

Singular writer for authors

Usage:

spec.author = 'John Jones'
# File lib/rubygems/specification.rb, line 257
def author= o
  self.authors = [o]
end
authors=(value) click to toggle source

Sets the list of authors, ensuring it is an array.

Usage:

spec.authors = ['John Jones', 'Mary Smith']
# File lib/rubygems/specification.rb, line 268
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]*',
                      'test/   *'].to_a

# or without Rake...
spec.files = Dir['lib/   *.rb'] + Dir['bin/*']
spec.files += Dir['[A-Z]*'] + Dir['test/**/*']
spec.files.reject! { |fn| fn.include? "CVS" }
# File lib/rubygems/specification.rb, line 351
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
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 295
def platform= platform
  if @original_platform.nil? or
     @original_platform == Gem::Platform::RUBY then
    @original_platform = platform
  end

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

  when Gem::Platform then
    @new_platform = platform

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

  @platform = @new_platform.to_s

  invalidate_memoized_attributes

  @new_platform
end
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 228
def require_paths=(val)
  @require_paths = Array(val)
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.

rubyforge_project[RW]

The rubyforge project this gem lives under. i.e. RubyGems' #rubyforge_project is “rubygems”.

This option is deprecated.

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 1308
def self._load(str)
  array = Marshal.load str

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

  current_version = CURRENT_SPECIFICATION_VERSION

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

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

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

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

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

  spec
end
add_spec(spec) click to toggle source

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

# File lib/rubygems/specification.rb, line 884
  def self.add_spec spec
    warn "Gem::Specification.add_spec is deprecated and will be removed in Rubygems 3.0" unless Gem::Deprecate.skip
    # TODO: find all extraneous adds
    # puts
    # p :add_spec => [spec.full_name, caller.reject { |s| s =~ /minitest/ }]

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

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

    return if _all.include? spec

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

  ##
  # Adds multiple specs to the known specifications.

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

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

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

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

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

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

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

  def self.all= specs
    @@stubs_by_name = specs.group_by(&:name)
    @@all = @@stubs = specs
  end

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

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

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

  def self.array_attributes
    @@array_attributes.dup
  end

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

  def self.attribute_names
    @@attributes.dup
  end

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

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

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

  def self.dirs= dirs
    self.reset

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

  extend Enumerable

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  def self.find_inactive_by_path path
    stub = stubs.find { |s|
      s.contains_requirable_file? path unless s.activated?
    }
    stub && stub.to_spec
  end

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

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

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

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

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

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

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

    []
  end

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

  def self.from_yaml(input)
    Gem.load_yaml

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

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

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

    spec.specification_version ||= NONEXISTENT_SPECIFICATION_VERSION
    spec.reset_nil_attributes_to_default

    spec
  end

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

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

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

    specs.reverse_each do |spec|
      unless spec
        raise Gem::Exception, "unexpectedly spec is nil: #{specs}"
      end
      next if spec.version.prerelease? unless prerelease

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

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

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

  def self.load file
    return unless file

    _spec = LOAD_CACHE[file]
    return _spec if _spec

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

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

    code.untaint

    begin
      _spec = eval code, binding, file

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

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

    nil
  end

  ##
  # Specification attributes that must be non-nil

  def self.non_nil_attributes
    @@non_nil_attributes.dup
  end

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

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

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

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

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

  def self.outdated_and_latest_version
    return enum_for __method__ unless block_given?

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

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

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

      latest_remote = remotes.sort.last

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

    nil
  end

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

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

  ##
  # Is +name+ a required attribute?

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

  ##
  # Required specification attributes

  def self.required_attributes
    @@required_attributes.dup
  end

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

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

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

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

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

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

    current_version = CURRENT_SPECIFICATION_VERSION

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

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

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

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

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

    spec
  end

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

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

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

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

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

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

    raise_if_conflicts

    activate_dependencies
    add_self_to_load_path

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

    return true
  end

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

  def activate_dependencies
    unresolved = Gem::Specification.unresolved_deps

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

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

        raise e
      end

      specs = spec_dep.to_specs

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

    unresolved.delete self.name
  end

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

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

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

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

  ##
  # Sanitize a single string.

  def sanitize_string(string)
    return string unless string

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

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

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

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

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

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

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

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

    dependencies << dependency
  end

  private :add_dependency_with_type

  alias add_dependency add_runtime_dependency

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

  def add_self_to_load_path
    return if default_gem?

    paths = full_require_paths

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

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

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

  def author
    val = authors and val.first
  end

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

  def authors
    @authors ||= []
  end

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

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

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

  def bin_file name
    File.join bin_dir, name
  end

  ##
  # Returns the build_args used to install the gem

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

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

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

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

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

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

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

  def build_info_dir
    File.join base_dir, "build_info"
  end

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  def date
    @date ||= TODAY
  end

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

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

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

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

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

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

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

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

  def default_value name
    @@default_value[name]
  end

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

  def dependencies
    @dependencies ||= []
  end

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

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

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

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

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

  def description= str
    @description = str.to_s
  end

  ##
  # List of dependencies that are used for development

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

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

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

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

  def encode_with coder # :nodoc:
    mark_version

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

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

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

  ##
  # Singular accessor for #executables

  def executable
    val = executables and val.first
  end

  ##
  # Singular accessor for #executables

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

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

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

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

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

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

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

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

  def file_name
    "#{full_name}.gem"
  end

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

  def files= files
    @files = Array files
  end

  ##
  # Finds all gems that satisfy +dep+

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

  private :find_all_satisfiers

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

  def for_cache
    spec = dup

    spec.files = nil
    spec.test_files = nil

    spec
  end

  def full_name
    @full_name ||= super
  end

  ##
  # Work around bundler removing my methods

  def gem_dir # :nodoc:
    super
  end

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

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

  def has_rdoc # :nodoc:
    true
  end

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

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

  alias :has_rdoc? :has_rdoc # :nodoc:

  ##
  # True if this gem has files in test_files

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

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

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

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

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

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

    @@nil_attributes.each do |key|
      instance_variable_set "@#{key}", nil
    end

    @@non_nil_attributes.each do |key|
      default = default_value(key)
      value = Dupable[key] ? default.dup : default
      instance_variable_set "@#{key}", value
    end

    @new_platform = Gem::Platform::RUBY

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

    yield self if block_given?
  end

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

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

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

        e.file_path = loaded_from
        raise e
      end
    end
  end

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

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

  def invalidate_memoized_attributes
    @full_name = nil
    @cache_file = nil
  end

  private :invalidate_memoized_attributes

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

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

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

  ##
  # Singular accessor for #licenses

  def license
    licenses.first
  end

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

  def licenses
    @licenses ||= []
  end

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

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

  def mark_version
    @rubygems_version = Gem::VERSION
  end

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

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

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

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

    true
  end

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

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

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

  ##
  # Return a NameTuple that represents this Specification

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

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

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

  ##
  # Cruft. Use +platform+.

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

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

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

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

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

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

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

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

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

          q.breakable
        end
      end
    end
  end

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

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

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

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

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

    raise e
  end

  private :check_version_conflict

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

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

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

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

  ##
  # Singular accessor for #require_paths

  def require_path
    val = require_paths and val.first
  end

  ##
  # Singular accessor for #require_paths

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

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

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

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

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

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

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

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

  private :ruby_code

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

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

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

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

  private :same_attributes?

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

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

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

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

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

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

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

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

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

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

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

  def spec_name
    "#{full_name}.gemspec"
  end

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

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

  ##
  # Singular accessor for #test_files

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

  ##
  # Singular mutator for #test_files

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

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

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

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

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

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

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

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

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

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

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

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

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

      result << "    else"

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

      result << '    end'

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

    result << "end"
    result << nil

    result.join "\n"
  end

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

  def to_ruby_for_cache
    for_cache.to_ruby
  end

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

  ##
  # Returns self

  def to_spec
    self
  end

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    metadata.values.each do |k|
      if !k.kind_of?(String)
        raise Gem::InvalidSpecificationException,
                'metadata values must be a String'
      end

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

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

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

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

    validate_permissions

    # reject lazy developers:

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

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

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

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

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

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

    # Warnings

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

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

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

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

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

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

    validate_dependencies

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

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

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

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

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

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

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

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

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

        base = dep_version.segments.first 2

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

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

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

        base = dep_version.segments.first 2

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

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

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

  def validate_permissions
    return if Gem.win_platform?

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

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

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

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

    return @version
  end

  def stubbed?
    false
  end

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

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

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

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

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

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

      instance_variable_set "@#{attribute}", value
    end

    @installed_by_version ||= nil
  end

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

    alert_warning statement
  end

  def raw_require_paths # :nodoc:
    @require_paths
  end

  extend Gem::Deprecate

  # TODO:
  # deprecate :has_rdoc,            :none,       2011, 10
  # deprecate :has_rdoc?,           :none,       2011, 10
  # deprecate :has_rdoc=,           :none,       2011, 10
  # deprecate :default_executable,  :none,       2011, 10
  # deprecate :default_executable=, :none,       2011, 10
  
add_specs(*specs) click to toggle source

Adds multiple specs to the known specifications.

# File lib/rubygems/specification.rb, line 909
def self.add_specs *specs
  warn "Gem::Specification.add_specs is deprecated and will be removed in Rubygems 3.0" unless Gem::Deprecate.skip

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

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

  Gem::Deprecate.skip_during do
    specs.each do |spec| # TODO: slow
      add_spec spec
    end
  end
end
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 929
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 947
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 955
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 964
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 973
def self.attribute_names
  @@attributes.dup
end
dirs() click to toggle source

Return the directories that Specification uses to find specs.

# File lib/rubygems/specification.rb, line 980
def self.dirs
  @@dirs ||= Gem.path.collect { |dir|
    File.join dir.dup.untaint, "specifications"
  }
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 990
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 1002
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 1055
def self.find_active_stub_by_path path
  stub = @@active_stub_with_requirable_file[path] ||= (stubs.find { |s|
    s.activated? and s.contains_requirable_file? path
  } || NOT_FOUND)
  stub.this
end
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 1013
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 1025
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 1036
def self.find_by_path path
  path = path.dup.freeze
  spec = @@spec_with_requirable_file[path] ||= (stubs.find { |s|
    s.contains_requirable_file? path
  } || 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 1065
def self.find_in_unresolved path
  # TODO: do we need these?? Kill it
  specs = unresolved_deps.values.map { |dep| dep.to_specs }.flatten

  specs.find_all { |spec| spec.contains_requirable_file? path }
end
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 1076
def self.find_in_unresolved_tree path
  specs = unresolved_deps.values.map { |dep| dep.to_specs }.flatten

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

  []
end
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 1048
def self.find_inactive_by_path path
  stub = stubs.find { |s|
    s.contains_requirable_file? path unless s.activated?
  }
  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 1100
def self.from_yaml(input)
  Gem.load_yaml

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

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

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

  spec.specification_version ||= NONEXISTENT_SPECIFICATION_VERSION
  spec.reset_nil_attributes_to_default

  spec
end
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 1124
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 1151
  def self.load file
    return unless file

    _spec = LOAD_CACHE[file]
    return _spec if _spec

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

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

    code.untaint

    begin
      _spec = eval code, binding, file

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

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

    nil
  end

  ##
  # Specification attributes that must be non-nil

  def self.non_nil_attributes
    @@non_nil_attributes.dup
  end

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

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

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

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

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

  def self.outdated_and_latest_version
    return enum_for __method__ unless block_given?

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

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

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

      latest_remote = remotes.sort.last

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

    nil
  end

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

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

  ##
  # Is +name+ a required attribute?

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

  ##
  # Required specification attributes

  def self.required_attributes
    @@required_attributes.dup
  end

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

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

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

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

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

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

    current_version = CURRENT_SPECIFICATION_VERSION

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

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

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

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

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

    spec
  end

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

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

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

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

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

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

    raise_if_conflicts

    activate_dependencies
    add_self_to_load_path

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

    return true
  end

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

  def activate_dependencies
    unresolved = Gem::Specification.unresolved_deps

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

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

        raise e
      end

      specs = spec_dep.to_specs

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

    unresolved.delete self.name
  end

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

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

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

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

  ##
  # Sanitize a single string.

  def sanitize_string(string)
    return string unless string

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

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

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

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

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

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

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

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

    dependencies << dependency
  end

  private :add_dependency_with_type

  alias add_dependency add_runtime_dependency

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

  def add_self_to_load_path
    return if default_gem?

    paths = full_require_paths

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

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

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

  def author
    val = authors and val.first
  end

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

  def authors
    @authors ||= []
  end

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

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

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

  def bin_file name
    File.join bin_dir, name
  end

  ##
  # Returns the build_args used to install the gem

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

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

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

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

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

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

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

  def build_info_dir
    File.join base_dir, "build_info"
  end

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  def date
    @date ||= TODAY
  end

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

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

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

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

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

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

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

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

  def default_value name
    @@default_value[name]
  end

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

  def dependencies
    @dependencies ||= []
  end

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

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

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

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

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

  def description= str
    @description = str.to_s
  end

  ##
  # List of dependencies that are used for development

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

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

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

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

  def encode_with coder # :nodoc:
    mark_version

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

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

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

  ##
  # Singular accessor for #executables

  def executable
    val = executables and val.first
  end

  ##
  # Singular accessor for #executables

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

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

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

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

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

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

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

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

  def file_name
    "#{full_name}.gem"
  end

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

  def files= files
    @files = Array files
  end

  ##
  # Finds all gems that satisfy +dep+

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

  private :find_all_satisfiers

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

  def for_cache
    spec = dup

    spec.files = nil
    spec.test_files = nil

    spec
  end

  def full_name
    @full_name ||= super
  end

  ##
  # Work around bundler removing my methods

  def gem_dir # :nodoc:
    super
  end

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

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

  def has_rdoc # :nodoc:
    true
  end

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

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

  alias :has_rdoc? :has_rdoc # :nodoc:

  ##
  # True if this gem has files in test_files

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

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

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

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

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

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

    @@nil_attributes.each do |key|
      instance_variable_set "@#{key}", nil
    end

    @@non_nil_attributes.each do |key|
      default = default_value(key)
      value = Dupable[key] ? default.dup : default
      instance_variable_set "@#{key}", value
    end

    @new_platform = Gem::Platform::RUBY

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

    yield self if block_given?
  end

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

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

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

        e.file_path = loaded_from
        raise e
      end
    end
  end

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

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

  def invalidate_memoized_attributes
    @full_name = nil
    @cache_file = nil
  end

  private :invalidate_memoized_attributes

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

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

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

  ##
  # Singular accessor for #licenses

  def license
    licenses.first
  end

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

  def licenses
    @licenses ||= []
  end

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

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

  def mark_version
    @rubygems_version = Gem::VERSION
  end

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

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

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

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

    true
  end

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

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

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

  ##
  # Return a NameTuple that represents this Specification

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

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

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

  ##
  # Cruft. Use +platform+.

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

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

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

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

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

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

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

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

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

          q.breakable
        end
      end
    end
  end

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

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

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

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

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

    raise e
  end

  private :check_version_conflict

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

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

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

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

  ##
  # Singular accessor for #require_paths

  def require_path
    val = require_paths and val.first
  end

  ##
  # Singular accessor for #require_paths

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

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

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

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

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

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

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

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

  private :ruby_code

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

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

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

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

  private :same_attributes?

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

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

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

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

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

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

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

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

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

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

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

  def spec_name
    "#{full_name}.gemspec"
  end

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

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

  ##
  # Singular accessor for #test_files

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

  ##
  # Singular mutator for #test_files

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

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

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

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

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

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

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

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

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

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

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

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

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

      result << "    else"

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

      result << '    end'

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

    result << "end"
    result << nil

    result.join "\n"
  end

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

  def to_ruby_for_cache
    for_cache.to_ruby
  end

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

  ##
  # Returns self

  def to_spec
    self
  end

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    metadata.values.each do |k|
      if !k.kind_of?(String)
        raise Gem::InvalidSpecificationException,
                'metadata values must be a String'
      end

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

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

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

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

    validate_permissions

    # reject lazy developers:

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

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

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

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

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

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

    # Warnings

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

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

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

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

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

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

    validate_dependencies

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

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

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

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

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

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

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

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

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

        base = dep_version.segments.first 2

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

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

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

        base = dep_version.segments.first 2

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

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

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

  def validate_permissions
    return if Gem.win_platform?

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

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

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

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

    return @version
  end

  def stubbed?
    false
  end

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

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

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

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

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

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

      instance_variable_set "@#{attribute}", value
    end

    @installed_by_version ||= nil
  end

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

    alert_warning statement
  end

  def raw_require_paths # :nodoc:
    @require_paths
  end

  extend Gem::Deprecate

  # TODO:
  # deprecate :has_rdoc,            :none,       2011, 10
  # deprecate :has_rdoc?,           :none,       2011, 10
  # deprecate :has_rdoc=,           :none,       2011, 10
  # deprecate :default_executable,  :none,       2011, 10
  # deprecate :default_executable=, :none,       2011, 10
  # deprecate :file_name,           :cache_file, 2011, 10
  
load_defaults() click to toggle source

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

# File lib/rubygems/specification.rb, line 872
def self.load_defaults
  each_spec([default_specifications_dir]) do |spec|
    # #load returns nil if the spec is bad, so we just ignore
    # it at this stage
    Gem.register_default_spec(spec)
  end
end
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 2033
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

  @@nil_attributes.each do |key|
    instance_variable_set "@#{key}", nil
  end

  @@non_nil_attributes.each do |key|
    default = default_value(key)
    value = Dupable[key] ? default.dup : default
    instance_variable_set "@#{key}", value
  end

  @new_platform = Gem::Platform::RUBY

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

  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 1190
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 1197
def self.normalize_yaml_input(input)
  result = input.respond_to?(:read) ? input.read : input
  result = "--- " + result unless result =~ /\A--- /
  result = result.dup
  result.gsub!(/ !!null \n/, " \n")
  # date: 2011-04-26 00:00:00.000000000Z
  # date: 2011-04-26 00:00:00.000000000 Z
  result.gsub!(/^(date: \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\.\d+?)Z/, '\1 Z')
  result
end
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 1215
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 1226
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
remove_spec(spec) click to toggle source

Removes spec from the known specs.

# File lib/rubygems/specification.rb, line 1251
def self.remove_spec spec
  warn "Gem::Specification.remove_spec is deprecated and will be removed in Rubygems 3.0" unless Gem::Deprecate.skip
  _all.delete spec
  stubs.delete_if { |s| s.full_name == spec.full_name }
  (@@stubs_by_name[spec.name] || []).delete_if { |s| s.full_name == spec.full_name }
  reset
end
required_attribute?(name) click to toggle source

Is name a required attribute?

# File lib/rubygems/specification.rb, line 1262
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 1269
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 1277
def self.reset
  @@dirs = nil
  Gem.pre_reset_hooks.each { |hook| hook.call }
  @@all = nil
  @@stubs = nil
  @@stubs_by_name = {}
  @@spec_with_requirable_file          = {}
  @@active_stub_with_requirable_file   = {}
  _clear_load_cache
  unresolved = unresolved_deps
  unless unresolved.empty? then
    w = "W" + "ARN"
    warn "#{w}: Unresolved specs during Gem::Specification.reset:"
    unresolved.values.each do |dep|
      warn "      #{dep}"
    end
    warn "#{w}: Clearing out unresolved specs."
    warn "Please report a bug if this causes problems."
    unresolved.clear
  end
  Gem.post_reset_hooks.each { |hook| hook.call }
end
stubs() click to toggle source

Returns a Gem::StubSpecification for every installed gem

# File lib/rubygems/specification.rb, line 830
def self.stubs
  @@stubs ||= begin
    pattern = "*.gemspec"
    stubs = default_stubs(pattern).concat installed_stubs(dirs, pattern)
    stubs = uniq_by(stubs) { |stub| stub.full_name }

    _resort!(stubs)
    @@stubs_by_name = stubs.group_by(&:name)
    stubs
  end
end
stubs_for(name) click to toggle source

Returns a Gem::StubSpecification for installed gem named name

# File lib/rubygems/specification.rb, line 847
def self.stubs_for name
  if @@stubs
    @@stubs_by_name[name] || []
  else
    pattern = "#{name}-*.gemspec"
    stubs = default_stubs(pattern) + installed_stubs(dirs, pattern)
    stubs = uniq_by(stubs) { |stub| stub.full_name }.group_by(&:name)
    stubs.each_value { |v| _resort!(v) }

    @@stubs_by_name.merge! stubs
    @@stubs_by_name[name] ||= EMPTY
  end
end
unresolved_deps() click to toggle source

DOC: This method needs documented or nodoc'd

# File lib/rubygems/specification.rb, line 1301
def self.unresolved_deps
  @unresolved_deps ||= Hash.new { |h, n| h[n] = Gem::Dependency.new n }
end

Private Class Methods

default_stubs(pattern) click to toggle source
# File lib/rubygems/specification.rb, line 755
def self.default_stubs pattern
  base_dir = Gem.default_dir
  gems_dir = File.join base_dir, "gems"
  gemspec_stubs_in(default_specifications_dir, pattern) do |path|
    Gem::StubSpecification.default_gemspec_stub(path, base_dir, gems_dir)
  end
end
gemspec_stubs_in(dir, pattern) { |path| ... } click to toggle source
# File lib/rubygems/specification.rb, line 750
def self.gemspec_stubs_in dir, pattern
  Dir[File.join(dir, pattern)].map { |path| yield path }.select(&:valid?)
end
installed_stubs(dirs, pattern) click to toggle source
# File lib/rubygems/specification.rb, line 764
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
sort_by!(list, &block) click to toggle source
# File lib/rubygems/specification.rb, line 810
def self.sort_by! list, &block
  list.sort_by!(&block)
end

Public Instance Methods

_dump(limit) click to toggle source

Dump only crucial instance variables.

# File lib/rubygems/specification.rb, line 1376
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 1463
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 1406
def activate
  other = Gem.loaded_specs[self.name]
  if other then
    check_version_conflict other
    return false
  end

  raise_if_conflicts

  activate_dependencies
  add_self_to_load_path

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

  return true
end
activate_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 1430
def activate_dependencies
  unresolved = Gem::Specification.unresolved_deps

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

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

      raise e
    end

    specs = spec_dep.to_specs

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

  unresolved.delete self.name
end
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 1505
def add_bindir(executables)
  return nil if executables.nil?

  if @bindir then
    Array(executables).map { |e| File.join(@bindir, e) }
  else
    executables
  end
rescue
  return nil
end
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 1522
def add_dependency_with_type(dependency, type, *requirements)
  requirements = if requirements.empty? then
                   Gem::Requirement.default
                 else
                   requirements.flatten
                 end

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

  dependencies << dependency
end
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 1544
  def add_self_to_load_path
    return if default_gem?

    paths = full_require_paths

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

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

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

  def author
    val = authors and val.first
  end

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

  def authors
    @authors ||= []
  end

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

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

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

  def bin_file name
    File.join bin_dir, name
  end

  ##
  # Returns the build_args used to install the gem

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

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

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

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

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

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

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

  def build_info_dir
    File.join base_dir, "build_info"
  end

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  def date
    @date ||= TODAY
  end

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

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

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

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

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

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

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

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

  def default_value name
    @@default_value[name]
  end

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

  def dependencies
    @dependencies ||= []
  end

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

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

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

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

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

  def description= str
    @description = str.to_s
  end

  ##
  # List of dependencies that are used for development

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

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

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

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

  def encode_with coder # :nodoc:
    mark_version

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

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

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

  ##
  # Singular accessor for #executables

  def executable
    val = executables and val.first
  end

  ##
  # Singular accessor for #executables

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

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

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

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

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

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

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

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

  def file_name
    "#{full_name}.gem"
  end

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

  def files= files
    @files = Array files
  end

  ##
  # Finds all gems that satisfy +dep+

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

  private :find_all_satisfiers

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

  def for_cache
    spec = dup

    spec.files = nil
    spec.test_files = nil

    spec
  end

  def full_name
    @full_name ||= super
  end

  ##
  # Work around bundler removing my methods

  def gem_dir # :nodoc:
    super
  end

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

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

  def has_rdoc # :nodoc:
    true
  end

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

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

  alias :has_rdoc? :has_rdoc # :nodoc:

  ##
  # True if this gem has files in test_files

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

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

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

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

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

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

    @@nil_attributes.each do |key|
      instance_variable_set "@#{key}", nil
    end

    @@non_nil_attributes.each do |key|
      default = default_value(key)
      value = Dupable[key] ? default.dup : default
      instance_variable_set "@#{key}", value
    end

    @new_platform = Gem::Platform::RUBY

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

    yield self if block_given?
  end

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

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

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

        e.file_path = loaded_from
        raise e
      end
    end
  end

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

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

  def invalidate_memoized_attributes
    @full_name = nil
    @cache_file = nil
  end

  private :invalidate_memoized_attributes

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

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

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

  ##
  # Singular accessor for #licenses

  def license
    licenses.first
  end

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

  def licenses
    @licenses ||= []
  end

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

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

  def mark_version
    @rubygems_version = Gem::VERSION
  end

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

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

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

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

    true
  end

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

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

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

  ##
  # Return a NameTuple that represents this Specification

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

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

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

  ##
  # Cruft. Use +platform+.

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

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

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

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

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

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

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

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

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

          q.breakable
        end
      end
    end
  end

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

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

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

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

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

    raise e
  end

  private :check_version_conflict

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

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

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

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

  ##
  # Singular accessor for #require_paths

  def require_path
    val = require_paths and val.first
  end

  ##
  # Singular accessor for #require_paths

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

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

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

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

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

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

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

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

  private :ruby_code

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

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

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

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

  private :same_attributes?

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

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

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

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

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

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

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

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

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

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

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

  def spec_name
    "#{full_name}.gemspec"
  end

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

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

  ##
  # Singular accessor for #test_files

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

  ##
  # Singular mutator for #test_files

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

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

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

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

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

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

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

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

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

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

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

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

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

      result << "    else"

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

      result << '    end'

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

    result << "end"
    result << nil

    result.join "\n"
  end

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

  def to_ruby_for_cache
    for_cache.to_ruby
  end

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

  ##
  # Returns self

  def to_spec
    self
  end

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    metadata.values.each do |k|
      if !k.kind_of?(String)
        raise Gem::InvalidSpecificationException,
                'metadata values must be a String'
      end

      if k.size > 1024
        raise Gem::InvalidSpecificationException,
                "metadata value too large (#{k.size} > 1024)"
      end
    end

    licenses.each { |license|
      if license.length > 64
        raise Gem::InvalidSpecificationException,
          "each license must be 64 characters or less"
      end

      if !Gem::Licenses.match?(license)
        suggestions = Gem::Licenses.suggestions(license)
        message = <<-warning
license value '#{license}' is invalid.  Use a license identifier from
http://spdx.org/licenses or '#{Gem::Licenses::NONSTANDARD}' for a nonstandard license.
        warning
        message += "Did you mean #{suggestions.map { |s| "'#{s}'"}.join(', ')}?\n" unless suggestions.nil?
        warning(message)
      end
    }

    warning <<-warning if licenses.empty?
licenses is empty, but is recommended.  Use a license identifier from
http://spdx.org/licenses or '#{Gem::Licenses::NONSTANDARD}' for a nonstandard license.
    warning

    validate_permissions

    # reject lazy developers:

    lazy = '"FIxxxXME" or "TOxxxDO"'.gsub(/xxx/, '')

    unless authors.grep(/FI XME|TO DO/x).empty? then
      raise Gem::InvalidSpecificationException, "#{lazy} is not an author"
    end

    unless Array(email).grep(/FI XME|TO DO/x).empty? then
      raise Gem::InvalidSpecificationException, "#{lazy} is not an email"
    end

    if description =~ /FI XME|TO DO/x then
      raise Gem::InvalidSpecificationException, "#{lazy} is not a description"
    end

    if summary =~ /FI XME|TO DO/x then
      raise Gem::InvalidSpecificationException, "#{lazy} is not a summary"
    end

    # Make sure a homepage is valid HTTP/HTTPS URI
    if homepage and not homepage.empty?
      begin
        homepage_uri = URI.parse(homepage)
        unless [URI::HTTP, URI::HTTPS].member? homepage_uri.class
          raise Gem::InvalidSpecificationException, "\"#{homepage}\" is not a valid HTTP URI"
        end
      rescue URI::InvalidURIError
        raise Gem::InvalidSpecificationException, "\"#{homepage}\" is not a valid HTTP URI"
      end
    end

    # Warnings

    %w[author email homepage summary].each do |attribute|
      value = self.send attribute
      warning "no #{attribute} specified" if value.nil? or value.empty?
    end

    if description == summary then
      warning 'description and summary are identical'
    end

    # TODO: raise at some given date
    warning "deprecated autorequire specified" if autorequire

    executables.each do |executable|
      executable_path = File.join(bindir, executable)
      shebang = File.read(executable_path, 2) == '#!'

      warning "#{executable_path} is missing #! line" unless shebang
    end

    files.each do |file|
      next unless File.symlink?(file)
      warning "#{file} is a symlink, which is not supported on all platforms"
    end

    validate_dependencies

    true
  ensure
    if $! or @warnings > 0 then
      alert_warning "See http://guides.rubygems.org/specification-reference/ for help"
    end
  end

  ##
  # Checks that dependencies use requirements as we recommend.  Warnings are
  # issued when dependencies are open-ended or overly strict for semantic
  # versioning.

  def validate_dependencies # :nodoc:
    # NOTE: see REFACTOR note in Gem::Dependency about types - this might be brittle
    seen = Gem::Dependency::TYPES.inject({}) { |types, type| types.merge({ type => {}}) }

    error_messages = []
    warning_messages = []
    dependencies.each do |dep|
      if prev = seen[dep.type][dep.name] then
        error_messages << <<-MESSAGE
duplicate dependency on #{dep}, (#{prev.requirement}) use:
    add_#{dep.type}_dependency '#{dep.name}', '#{dep.requirement}', '#{prev.requirement}'
        MESSAGE
      end

      seen[dep.type][dep.name] = dep

      prerelease_dep = dep.requirements_list.any? do |req|
        Gem::Requirement.new(req).prerelease?
      end

      warning_messages << "prerelease dependency on #{dep} is not recommended" if
        prerelease_dep && !version.prerelease?

      overly_strict = dep.requirement.requirements.length == 1 &&
        dep.requirement.requirements.any? do |op, version|
          op == '~>' and
            not version.prerelease? and
            version.segments.length > 2 and
            version.segments.first != 0
        end

      if overly_strict then
        _, dep_version = dep.requirement.requirements.first

        base = dep_version.segments.first 2

        warning_messages << <<-WARNING
pessimistic dependency on #{dep} may be overly strict
  if #{dep.name} is semantically versioned, use:
    add_#{dep.type}_dependency '#{dep.name}', '~> #{base.join '.'}', '>= #{dep_version}'
        WARNING
      end

      open_ended = dep.requirement.requirements.all? do |op, version|
        not version.prerelease? and (op == '>' or op == '>=')
      end

      if open_ended then
        op, dep_version = dep.requirement.requirements.first

        base = dep_version.segments.first 2

        bugfix = if op == '>' then
                   ", '> #{dep_version}'"
                 elsif op == '>=' and base != dep_version.segments then
                   ", '>= #{dep_version}'"
                 end

        warning_messages << <<-WARNING
open-ended dependency on #{dep} is not recommended
  if #{dep.name} is semantically versioned, use:
    add_#{dep.type}_dependency '#{dep.name}', '~> #{base.join '.'}'#{bugfix}
        WARNING
      end
    end
    if error_messages.any?
      raise Gem::InvalidSpecificationException, error_messages.join
    end
    if warning_messages.any?
      warning_messages.each { |warning_message| warning warning_message }
    end
  end

  ##
  # Checks to see if the files to be packaged are world-readable.

  def validate_permissions
    return if Gem.win_platform?

    files.each do |file|
      next unless File.file?(file)
      next if File.stat(file).mode & 0444 == 0444
      warning "#{file} is not world-readable"
    end

    executables.each do |name|
      exec = File.join @bindir, name
      next unless File.file?(exec)
      next if File.stat(exec).executable?
      warning "#{exec} is not executable"
    end
  end

  ##
  # Set the version to +version+, potentially also setting
  # required_rubygems_version if +version+ indicates it is a
  # prerelease.

  def version= version
    @version = Gem::Version.create(version)
    self.required_rubygems_version = '> 1.3.1' if @version.prerelease?
    invalidate_memoized_attributes

    return @version
  end

  def stubbed?
    false
  end

  def yaml_initialize(tag, vals) # :nodoc:
    vals.each do |ivar, val|
      case ivar
      when "date"
        # Force Date to go through the extra coerce logic in date=
        self.date = val.untaint
      else
        instance_variable_set "@#{ivar}", val.untaint
      end
    end

    @original_platform = @platform # for backwards compatibility
    self.platform = Gem::Platform.new @platform
  end

  ##
  # Reset nil attributes to their default values to make the spec valid

  def reset_nil_attributes_to_default
    nil_attributes = self.class.non_nil_attributes.find_all do |name|
      !instance_variable_defined?("@#{name}") || instance_variable_get("@#{name}").nil?
    end

    nil_attributes.each do |attribute|
      default = self.default_value attribute

      value = case default
              when Time, Numeric, Symbol, true, false, nil then default
              else default.dup
              end

      instance_variable_set "@#{attribute}", value
    end

    @installed_by_version ||= nil
  end

  def warning statement # :nodoc:
    @warnings += 1

    alert_warning statement
  end

  def raw_require_paths # :nodoc:
    @require_paths
  end

  extend Gem::Deprecate

  # TODO:
  # deprecate :has_rdoc,            :none,       2011, 10
  # deprecate :has_rdoc?,           :none,       2011, 10
  # deprecate :has_rdoc=,           :none,       2011, 10
  # deprecate :default_executable,  :none,       2011, 10
  # deprecate :default_executable=, :none,       2011, 10
  # deprecate :file_name,           :cache_file, 2011, 10
  # deprecate :full_gem_path,     :cache_file, 2011, 10
end
author() click to toggle source

Singular reader for authors. Returns the first author in the list

# File lib/rubygems/specification.rb, line 1564
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 1573
def authors
  @authors ||= []
end
base_dir() click to toggle source
# File lib/rubygems/specification.rb, line 2086
def base_dir
  return Gem.dir unless loaded_from
  @base_dir ||= if default_gem? then
                  File.dirname File.dirname File.dirname loaded_from
                else
                  File.dirname File.dirname loaded_from
                end
end
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 1583
def bin_dir
  @bin_dir ||= File.join gem_dir, bindir # TODO: this is unfortunate
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 1590
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 1597
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 1644
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 1652
def build_info_file
  File.join build_info_dir, "#{full_name}.info"
end
bundled_gem_in_old_ruby?() click to toggle source

Used to detect if the gem is bundled in older version of Ruby, but not detectable as default gem (see BasicSpecification#default_gem?).

# File lib/rubygems/specification.rb, line 1660
def bundled_gem_in_old_ruby?
  !default_gem? &&
    RUBY_VERSION < "2.0.0" &&
    summary == "This #{name} is bundled with Ruby"
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 1670
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 1677
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 1684
def conflicts
  conflicts = {}
  self.runtime_dependencies.each { |dep|
    spec = Gem.loaded_specs[dep.name]
    if spec and not spec.satisfies_requirement? dep
      (conflicts[spec] ||= []) << dep
    end
  }
  env_req = Gem.env_requirement(name)
  (conflicts[self] ||= []) << env_req unless env_req.satisfied_by? version
  conflicts
end
date() click to toggle source

The date this gem was created. Lazily defaults to the current UTC date.

There is no need to set this in your gem specification.

# File lib/rubygems/specification.rb, line 1727
def date
  @date ||= TODAY
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 1747
def date= date
  # We want to end up with a Time object with one-day resolution.
  # This is the cleanest, most-readable, faster-than-using-Date
  # way to do it.
  @date = case date
          when String then
            if DateTimeFormat =~ date then
              Time.utc($1.to_i, $2.to_i, $3.to_i)

            # Workaround for where the date format output from psych isn't
            # parsed as a Time object by syck and thus comes through as a
            # string.
            elsif /\A(\d{4})-(\d{2})-(\d{2}) \d{2}:\d{2}:\d{2}\.\d+?Z\z/ =~ date then
              Time.utc($1.to_i, $2.to_i, $3.to_i)
            else
              raise(Gem::InvalidSpecificationException,
                    "invalid date format in specification: #{date.inspect}")
            end
          when Time, DateLike then
            Time.utc(date.year, date.month, date.day)
          else
            TODAY
          end
end
default_value(name) click to toggle source

The default value for specification attribute name

# File lib/rubygems/specification.rb, line 1792
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 1802
def dependencies
  @dependencies ||= []
end
dependent_gems() 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 1812
def dependent_gems
  out = []
  Gem::Specification.each do |spec|
    spec.dependencies.each do |dep|
      if self.satisfies_requirement?(dep) then
        sats = []
        find_all_satisfiers(dep) do |sat|
          sats << sat
        end
        out << [spec, dep, sats]
      end
    end
  end
  out
end
dependent_specs() click to toggle source

Returns all specs that matches this spec's runtime dependencies.

# File lib/rubygems/specification.rb, line 1831
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 1838
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 1845
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 1857
def doc_dir type = nil
  @doc_dir ||= File.join base_dir, 'doc', full_name

  if type then
    File.join @doc_dir, type
  else
    @doc_dir
  end
end
executable() click to toggle source

Singular accessor for executables

# File lib/rubygems/specification.rb, line 1895
def executable
  val = executables and val.first
end
executable=(o) click to toggle source

Singular accessor for executables

# File lib/rubygems/specification.rb, line 1902
def executable=o
  self.executables = [o]
end
executables=(value) click to toggle source

Sets executables to value, ensuring it is an array. Don't use this, push onto the array instead.

# File lib/rubygems/specification.rb, line 1910
def executables= value
  # TODO: warn about setting instead of pushing
  @executables = Array(value)
end
extensions=(extensions) click to toggle source

Sets extensions to extensions, ensuring it is an array. Don't use this, push onto the array instead.

# File lib/rubygems/specification.rb, line 1919
def extensions= extensions
  # TODO: warn about setting instead of pushing
  @extensions = Array extensions
end
extra_rdoc_files=(files) click to toggle source

Sets #extra_rdoc_files to files, ensuring it is an array. Don't use this, push onto the array instead.

# File lib/rubygems/specification.rb, line 1928
def extra_rdoc_files= files
  # TODO: warn about setting instead of pushing
  @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 1938
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 1945
def files= files
  @files = Array files
end
find_all_satisfiers(dep) { |spec| ... } click to toggle source

Finds all gems that satisfy dep

# File lib/rubygems/specification.rb, line 1952
def find_all_satisfiers dep
  Gem::Specification.each do |spec|
    yield spec if spec.satisfies_requirement? dep
  end
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 1963
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 1972
def full_name
  @full_name ||= super
end
gems_dir() click to toggle source
# File lib/rubygems/specification.rb, line 1983
def gems_dir
  # TODO: this logic seems terribly broken, but tests fail if just base_dir
  @gems_dir ||= File.join(loaded_from && base_dir || Gem.dir, "gems")
end
has_conflicts?() click to toggle source

Return true if there are possible conflicts against the currently loaded specs.

# File lib/rubygems/specification.rb, line 1710
def has_conflicts?
  return true unless Gem.env_requirement(name).satisfied_by?(version)
  self.dependencies.any? { |dep|
    if dep.runtime? then
      spec = Gem.loaded_specs[dep.name]
      spec and not spec.satisfies_requirement? dep
    else
      false
    end
  }
end
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 2064
def initialize_copy other_spec
  self.class.array_attributes.each do |name|
    name = :"@#{name}"
    next unless other_spec.instance_variable_defined? name

    begin
      val = other_spec.instance_variable_get(name)
      if val then
        instance_variable_set name, val.dup
      elsif Gem.configuration.really_verbose
        warn "WARNING: #{full_name} has an invalid nil value for #{name}"
      end
    rescue TypeError
      e = Gem::FormatException.new \
        "#{full_name} has an invalid value for #{name}"

      e.file_path = loaded_from
      raise e
    end
  end
end
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 2099
def invalidate_memoized_attributes
  @full_name = nil
  @cache_file = nil
end
lib_files() click to toggle source

Files in the Gem under one of the require_paths

# File lib/rubygems/specification.rb, line 2117
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 2128
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 2137
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 2155
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 2175
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
name_tuple() click to toggle source

Return a NameTuple that represents this Specification

# File lib/rubygems/specification.rb, line 2207
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 2190
def normalize
  if defined?(@extra_rdoc_files) and @extra_rdoc_files then
    @extra_rdoc_files.uniq!
    @files ||= []
    @files.concat(@extra_rdoc_files)
  end

  @files            = @files.uniq if @files
  @extensions       = @extensions.uniq if @extensions
  @test_files       = @test_files.uniq if @test_files
  @executables      = @executables.uniq if @executables
  @extra_rdoc_files = @extra_rdoc_files.uniq if @extra_rdoc_files
end
platform() click to toggle source

The platform this gem runs on. See Gem::Platform for details.

# File lib/rubygems/specification.rb, line 2233
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. Don't use this, push onto the array instead.

# File lib/rubygems/specification.rb, line 2301
def rdoc_options= options
  # TODO: warn about setting instead of pushing
  @rdoc_options = Array options
end
require_path() click to toggle source

Singular accessor for require_paths

# File lib/rubygems/specification.rb, line 2309
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 2316
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. Don't use this, push onto the array instead.

# File lib/rubygems/specification.rb, line 2324
def requirements= req
  # TODO: warn about setting instead of pushing
  @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 2996
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 2336
def ri_dir
  @ri_dir ||= File.join base_dir, 'ri', full_name
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 2344
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
runtime_dependencies() click to toggle source

List of dependencies that will automatically be activated at runtime.

# File lib/rubygems/specification.rb, line 2369
def runtime_dependencies
  dependencies.select(&:runtime?)
end
same_attributes?(spec) click to toggle source

True if this gem has the same attributes as other.

# File lib/rubygems/specification.rb, line 2376
def same_attributes? spec
  @@attributes.all? { |name, default| self.send(name) == spec.send(name) }
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 1476
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 1486
def sanitize_string(string)
  return string unless string

  # HACK the #to_s is in here because RSpec has an Array of Arrays of
  # Strings for authors.  Need a way to disallow bad values on gemspec
  # generation.  (Probably won't happen.)
  string = string.to_s

  begin
    Builder::XChar.encode string
  rescue NameError, NoMethodError
    string.to_xs
  end
end
satisfies_requirement?(dependency) click to toggle source

Checks if this specification meets the requirement of dependency.

# File lib/rubygems/specification.rb, line 2385
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 2393
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 2408
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 2416
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 2425
def spec_name
  "#{full_name}.gemspec"
end
stubbed?() click to toggle source
# File lib/rubygems/specification.rb, line 2974
def stubbed?
  false
end
summary=(str) click to toggle source

A short summary of this gem's description.

# File lib/rubygems/specification.rb, line 2432
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 2475
def to_ruby
  mark_version
  result = []
  result << "# -*- encoding: utf-8 -*-"
  result << "#{Gem::StubSpecification::PREFIX}#{name} #{version} #{platform} #{raw_require_paths.join("\0")}"
  result << "#{Gem::StubSpecification::PREFIX}#{extensions.join "\0"}" unless
    extensions.empty?
  result << nil
  result << "Gem::Specification.new do |s|"

  result << "  s.name = #{ruby_code name}"
  result << "  s.version = #{ruby_code version}"
  unless platform.nil? or platform == Gem::Platform::RUBY then
    result << "  s.platform = #{ruby_code original_platform}"
  end
  result << ""
  result << "  s.required_rubygems_version = #{ruby_code required_rubygems_version} if s.respond_to? :required_rubygems_version="

  if metadata and !metadata.empty?
    result << "  s.metadata = #{ruby_code metadata} if s.respond_to? :metadata="
  end
  result << "  s.require_paths = #{ruby_code raw_require_paths}"

  handled = [
    :dependencies,
    :name,
    :platform,
    :require_paths,
    :required_rubygems_version,
    :specification_version,
    :version,
    :has_rdoc,
    :default_executable,
    :metadata
  ]

  @@attributes.each do |attr_name|
    next if handled.include? attr_name
    current_value = self.send(attr_name)
    if current_value != default_value(attr_name) or
       self.class.required_attribute? attr_name then
      result << "  s.#{attr_name} = #{ruby_code current_value}"
    end
  end

  if @installed_by_version then
    result << nil
    result << "  s.installed_by_version = \"#{Gem::VERSION}\" if s.respond_to? :installed_by_version"
  end

  unless dependencies.empty? then
    result << nil
    result << "  if s.respond_to? :specification_version then"
    result << "    s.specification_version = #{specification_version}"
    result << nil

    result << "    if Gem::Version.new(Gem::VERSION) >= Gem::Version.new('1.2.0') then"

    dependencies.each do |dep|
      req = dep.requirements_list.inspect
      dep.instance_variable_set :@type, :runtime if dep.type.nil? # HACK
      result << "      s.add_#{dep.type}_dependency(%q<#{dep.name}>.freeze, #{req})"
    end

    result << "    else"

    dependencies.each do |dep|
      version_reqs_param = dep.requirements_list.inspect
      result << "      s.add_dependency(%q<#{dep.name}>.freeze, #{version_reqs_param})"
    end

    result << '    end'

    result << "  else"
    dependencies.each do |dep|
      version_reqs_param = dep.requirements_list.inspect
      result << "    s.add_dependency(%q<#{dep.name}>.freeze, #{version_reqs_param})"
    end
    result << "  end"
  end

  result << "end"
  result << nil

  result.join "\n"
end
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 2568
def to_ruby_for_cache
  for_cache.to_ruby
end
to_spec() click to toggle source

Returns self

# File lib/rubygems/specification.rb, line 2579
def to_spec
  self
end
traverse(trail = [], visited = {}) click to toggle source

Recursively walk dependencies of this spec, executing the block for each hop.

# File lib/rubygems/specification.rb, line 2616
def traverse trail = [], visited = {}, &block
  trail.push(self)
  begin
    dependencies.each do |dep|
      next unless dep.runtime?
      dep.to_specs.each do |dep_spec|
        next if visited.has_key?(dep_spec)
        visited[dep_spec] = true
        trail.push(dep_spec)
        begin
          result = block[self, dep, dep_spec, trail]
        ensure
          trail.pop
        end
        unless result == :next
          spec_name = dep_spec.name
          dep_spec.traverse(trail, visited, &block) unless
            trail.any? { |s| s.name == spec_name }
        end
      end
    end
  ensure
    trail.pop
  end
end
validate(packaging = true) 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 2649
  def validate packaging = true
    @warnings = 0
    require 'rubygems/user_interaction'
    extend Gem::UserInteraction
    normalize

    nil_attributes = self.class.non_nil_attributes.find_all do |attrname|
      instance_variable_get("@#{attrname}").nil?
    end

    unless nil_attributes.empty? then
      raise Gem::InvalidSpecificationException,
        "#{nil_attributes.join ', '} must not be nil"
    end

    if packaging and rubygems_version != Gem::VERSION then
      raise Gem::InvalidSpecificationException,
            "expected RubyGems version #{Gem::VERSION}, was #{rubygems_version}"
    end

    @@required_attributes.each do |symbol|
      unless self.send symbol then
        raise Gem::InvalidSpecificationException,
              "missing value for attribute #{symbol}"
      end
    end

    if !name.is_a?(String) then
      raise Gem::InvalidSpecificationException,
            "invalid value for attribute name: \"#{name.inspect}\" must be a string"
    elsif name !~ /[a-zA-Z]/ then
      raise Gem::InvalidSpecificationException,
            "invalid value for attribute name: #{name.dump} must include at least one letter"
    elsif name !~ VALID_NAME_PATTERN then
      raise Gem::InvalidSpecificationException,
            "invalid value for attribute name: #{name.dump} can only include letters, numbers, dashes, and underscores"
    end

    if raw_require_paths.empty? then
      raise Gem::InvalidSpecificationException,
            'specification must have at least one require_path'
    end

    @files.delete_if            { |x| File.directory?(x) && !File.symlink?(x) }
    @test_files.delete_if       { |x| File.directory?(x) && !File.symlink?(x) }
    @executables.delete_if      { |x| File.directory?(File.join(@bindir, x)) }
    @extra_rdoc_files.delete_if { |x| File.directory?(x) && !File.symlink?(x) }
    @extensions.delete_if       { |x| File.directory?(x) && !File.symlink?(x) }

    non_files = files.reject { |x| File.file?(x) || File.symlink?(x) }

    unless not packaging or non_files.empty? then
      raise Gem::InvalidSpecificationException,
            "[\"#{non_files.join "\", \""}\"] are not files"
    end

    if files.include? file_name then
      raise Gem::InvalidSpecificationException,
            "#{full_name} contains itself (#{file_name}), check your files list"
    end

    unless specification_version.is_a?(Integer)
      raise Gem::InvalidSpecificationException,
            'specification_version must be an Integer (did you mean version?)'
    end

    case platform
    when Gem::Platform, Gem::Platform::RUBY then # ok
    else
      raise Gem::InvalidSpecificationException,
            "invalid platform #{platform.inspect}, see Gem::Platform"
    end

    self.class.array_attributes.each do |field|
      val = self.send field
      klass = case field
              when :dependencies
                Gem::Dependency
              else
                String
              end

      unless Array === val and val.all? { |x| x.kind_of?(klass) } then
        raise(Gem::InvalidSpecificationException,
              "#{field} must be an Array of #{klass}")
      end
    end

    [:authors].each do |field|
      val = self.send field
      raise Gem::InvalidSpecificationException, "#{field} may not be empty" if
        val.empty?
    end

    unless Hash === metadata
      raise Gem::InvalidSpecificationException,
              'metadata must be a hash'
    end

    metadata.keys.each do |k|
      if !k.kind_of?(String)
        raise Gem::InvalidSpecificationException,
                'metadata keys must be a String'
      end

      if k.size > 128
        raise Gem::InvalidSpecificationException,
                "metadata key too large (#{k.size} > 128)"
      end
    end

    metadata.values.each do |k|
      if !k.kind_of?(String)
        raise Gem::InvalidSpecificationException,
                'metadata values must be a String'
      end

      if k.size > 1024
        raise Gem::InvalidSpecificationException,
                "metadata value too large (#{k.size} > 1024)"
      end
    end

    licenses.each { |license|
      if license.length > 64
        raise Gem::InvalidSpecificationException,
          "each license must be 64 characters or less"
      end

      if !Gem::Licenses.match?(license)
        suggestions = Gem::Licenses.suggestions(license)
        message = <<-warning
license value '#{license}' is invalid.  Use a license identifier from
http://spdx.org/licenses or '#{Gem::Licenses::NONSTANDARD}' for a nonstandard license.
        warning
        message += "Did you mean #{suggestions.map { |s| "'#{s}'"}.join(', ')}?\n" unless suggestions.nil?
        warning(message)
      end
    }

    warning <<-warning if licenses.empty?
licenses is empty, but is recommended.  Use a license identifier from
http://spdx.org/licenses or '#{Gem::Licenses::NONSTANDARD}' for a nonstandard license.
    warning

    validate_permissions

    # reject lazy developers:

    lazy = '"FIxxxXME" or "TOxxxDO"'.gsub(/xxx/, '')

    unless authors.grep(/FI XME|TO DO/x).empty? then
      raise Gem::InvalidSpecificationException, "#{lazy} is not an author"
    end

    unless Array(email).grep(/FI XME|TO DO/x).empty? then
      raise Gem::InvalidSpecificationException, "#{lazy} is not an email"
    end

    if description =~ /FI XME|TO DO/x then
      raise Gem::InvalidSpecificationException, "#{lazy} is not a description"
    end

    if summary =~ /FI XME|TO DO/x then
      raise Gem::InvalidSpecificationException, "#{lazy} is not a summary"
    end

    # Make sure a homepage is valid HTTP/HTTPS URI
    if homepage and not homepage.empty?
      begin
        homepage_uri = URI.parse(homepage)
        unless [URI::HTTP, URI::HTTPS].member? homepage_uri.class
          raise Gem::InvalidSpecificationException, "\"#{homepage}\" is not a valid HTTP URI"
        end
      rescue URI::InvalidURIError
        raise Gem::InvalidSpecificationException, "\"#{homepage}\" is not a valid HTTP URI"
      end
    end

    # Warnings

    %w[author email homepage summary].each do |attribute|
      value = self.send attribute
      warning "no #{attribute} specified" if value.nil? or value.empty?
    end

    if description == summary then
      warning 'description and summary are identical'
    end

    # TODO: raise at some given date
    warning "deprecated autorequire specified" if autorequire

    executables.each do |executable|
      executable_path = File.join(bindir, executable)
      shebang = File.read(executable_path, 2) == '#!'

      warning "#{executable_path} is missing #! line" unless shebang
    end

    files.each do |file|
      next unless File.symlink?(file)
      warning "#{file} is a symlink, which is not supported on all platforms"
    end

    validate_dependencies

    true
  ensure
    if $! or @warnings > 0 then
      alert_warning "See http://guides.rubygems.org/specification-reference/ for help"
    end
  end
validate_permissions() click to toggle source

Checks to see if the files to be packaged are world-readable.

# File lib/rubygems/specification.rb, line 2944
  def validate_permissions
    return if Gem.win_platform?

    files.each do |file|
      next unless File.file?(file)
      next if File.stat(file).mode & 0444 == 0444
      warning "#{file} is not world-readable"
    end

    executables.each do |name|
      exec = File.join @bindir, name
      next unless File.file?(exec)
      next if File.stat(exec).executable?
      warning "#{exec} is not executable"
    end
  end

  ##
  # Set the version to +version+, potentially also setting
  # required_rubygems_version if +version+ indicates it is a
  # prerelease.

  def version= version
    @version = Gem::Version.create(version)
    self.required_rubygems_version = '> 1.3.1' if @version.prerelease?
    invalidate_memoized_attributes

    return @version
  end

  def stubbed?
    false
  end

  def yaml_initialize(tag, vals) # :nodoc:
    vals.each do |ivar, val|
      case ivar
      when "date"
        # Force Date to go through the extra coerce logic in date=
        self.date = val.untaint
      else
        instance_variable_set "@#{ivar}", val.untaint
      end
    end

    @original_platform = @platform # for backwards compatibility
    self.platform = Gem::Platform.new @platform
  end

  ##
  # Reset nil attributes to their default values to make the spec valid

  def reset_nil_attributes_to_default
    nil_attributes = self.class.non_nil_attributes.find_all do |name|
      !instance_variable_defined?("@#{name}") || instance_variable_get("@#{name}").nil?
    end

    nil_attributes.each do |attribute|
      default = self.default_value attribute

      value = case default
              when Time, Numeric, Symbol, true, false, nil then default
              else default.dup
              end

      instance_variable_set "@#{attribute}", value
    end

    @installed_by_version ||= nil
  end

  def warning statement # :nodoc:
    @warnings += 1

    alert_warning statement
  end

  def raw_require_paths # :nodoc:
    @require_paths
  end

  extend Gem::Deprecate

  # TODO:
  # deprecate :has_rdoc,            :none,       2011, 10
  # deprecate :has_rdoc?,           :none,       2011, 10
  # deprecate :has_rdoc=,           :none,       2011, 10
  # deprecate :default_executable,  :none,       2011, 10
  # deprecate :default_executable=, :none,       2011, 10
  # deprecate :file_name,           :cache_file, 2011, 10
  # deprecate :full_gem_path,     :cache_file, 2011, 10
end
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 2966
def version= version
  @version = Gem::Version.create(version)
  self.required_rubygems_version = '> 1.3.1' if @version.prerelease?
  invalidate_memoized_attributes

  return @version
end