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bundled_gems.rb
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# -*- frozen-string-literal: true -*- # :stopdoc: module Gem::BUNDLED_GEMS SINCE = { "rexml" => "3.0.0", "rss" => "3.0.0", "webrick" => "3.0.0", "matrix" => "3.1.0", "net-ftp" => "3.1.0", "net-imap" => "3.1.0", "net-pop" => "3.1.0", "net-smtp" => "3.1.0", "prime" => "3.1.0", "racc" => "3.3.0", "abbrev" => "3.4.0", "base64" => "3.4.0", "bigdecimal" => "3.4.0", "csv" => "3.4.0", "drb" => "3.4.0", "getoptlong" => "3.4.0", "mutex_m" => "3.4.0", "nkf" => "3.4.0", "observer" => "3.4.0", "resolv-replace" => "3.4.0", "rinda" => "3.4.0", "syslog" => "3.4.0", }.freeze EXACT = { "abbrev" => true, "base64" => true, "bigdecimal" => true, "csv" => true, "drb" => true, "getoptlong" => true, "mutex_m" => true, "nkf" => true, "kconv" => "nkf", "observer" => true, "resolv-replace" => true, "rinda" => true, "syslog" => true, }.freeze PREFIXED = { "bigdecimal" => true, "csv" => true, "drb" => true, "rinda" => true, "syslog" => true, }.freeze WARNED = {} # unfrozen conf = ::RbConfig::CONFIG LIBDIR = (conf["rubylibdir"] + "/").freeze ARCHDIR = (conf["rubyarchdir"] + "/").freeze dlext = [conf["DLEXT"], "so"].uniq DLEXT = /\.#{Regexp.union(dlext)}\z/ LIBEXT = /\.#{Regexp.union("rb", *dlext)}\z/ def self.replace_require(specs) return if [::Kernel.singleton_class, ::Kernel].any? {|klass| klass.respond_to?(:no_warning_require) } spec_names = specs.to_a.each_with_object({}) {|spec, h| h[spec.name] = true } [::Kernel.singleton_class, ::Kernel].each do |kernel_class| kernel_class.send(:alias_method, :no_warning_require, :require) kernel_class.send(:define_method, :require) do |name| if message = ::Gem::BUNDLED_GEMS.warning?(name, specs: spec_names) # rubocop:disable Style/HashSyntax warn message, :uplevel => 1 end kernel_class.send(:no_warning_require, name) end if kernel_class == ::Kernel kernel_class.send(:private, :require) else kernel_class.send(:public, :require) end end end def self.find_gem(path) if !path return elsif path.start_with?(ARCHDIR) n = path.delete_prefix(ARCHDIR).sub(DLEXT, "") elsif path.start_with?(LIBDIR) n = path.delete_prefix(LIBDIR).chomp(".rb") else return end EXACT[n] or PREFIXED[n = n[%r[\A[^/]+(?=/)]]] && n end def self.warning?(name, specs: nil) # name can be a feature name or a file path with String or Pathname feature = File.path(name) # bootsnap expands `require "csv"` to `require "#{LIBDIR}/csv.rb"`, # and `require "syslog"` to `require "#{ARCHDIR}/syslog.so"`. name = feature.delete_prefix(ARCHDIR) name.delete_prefix!(LIBDIR) name.tr!("/", "-") name.sub!(LIBEXT, "") return if specs.include?(name) _t, path = $:.resolve_feature_path(feature) if gem = find_gem(path) return if specs.include?(gem) caller = caller_locations(3, 3)&.find {|c| c&.absolute_path} return if find_gem(caller&.absolute_path) elsif SINCE[name] && !path gem = true else return end return if WARNED[name] WARNED[name] = true if gem == true gem = name "#{feature} was loaded from the standard library, but" elsif gem return if WARNED[gem] WARNED[gem] = true "#{feature} is found in #{gem}, which" else return end + build_message(gem) end def self.build_message(gem) msg = " #{RUBY_VERSION < SINCE[gem] ? "will no longer be" : "is not"} part of the default gems since Ruby #{SINCE[gem]}." if defined?(Bundler) msg += " Add #{gem} to your Gemfile or gemspec." # We detect the gem name from caller_locations. We need to skip 2 frames like: # lib/ruby/3.3.0+0/bundled_gems.rb:90:in `warning?'", # lib/ruby/3.3.0+0/bundler/rubygems_integration.rb:247:in `block (2 levels) in replace_require'", # # Additionally, we need to skip Bootsnap and Zeitwerk if present, these # gems decorate Kernel#require, so they are not really the ones issuing # the require call users should be warned about. Those are upwards. frames_to_skip = 2 location = nil Thread.each_caller_location do |cl| if frames_to_skip >= 1 frames_to_skip -= 1 next end if cl.base_label != "require" location = cl.path break end end if location && File.file?(location) && !location.start_with?(Gem::BUNDLED_GEMS::LIBDIR) caller_gem = nil Gem.path.each do |path| if location =~ %r{#{path}/gems/([\w\-\.]+)} caller_gem = $1 break end end if caller_gem msg += " Also contact author of #{caller_gem} to add #{gem} into its gemspec." end end else msg += " Install #{gem} from RubyGems." end msg end freeze end # for RubyGems without Bundler environment. # If loading library is not part of the default gems and the bundled gems, warn it. class LoadError def message return super unless path name = path.tr("/", "-") if !defined?(Bundler) && Gem::BUNDLED_GEMS::SINCE[name] && !Gem::BUNDLED_GEMS::WARNED[name] warn name + Gem::BUNDLED_GEMS.build_message(name) end super end end # :startdoc: