* lib/rubygems: Import RubyGems from master as of commit 523551c

* test/rubygems:  ditto.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42257 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

7 files changed, 157 insertions, 84 deletions

diff --git a/lib/rubygems.rb b/lib/rubygems.rb
index 0c9dc759b4..55658201f1 100644
--- a/lib/rubygems.rb
+++ b/lib/rubygems.rb
@@ -8,7 +8,7 @@
 require 'rbconfig'
 
 module Gem
-  VERSION = '2.1.0'
+  VERSION = '2.1.0.rc.1'
 end
 
 # Must be first since it unloads the prelude from 1.9.2
diff --git a/lib/rubygems/commands/outdated_command.rb b/lib/rubygems/commands/outdated_command.rb
index 887faab0a2..196d0d67e6 100644
--- a/lib/rubygems/commands/outdated_command.rb
+++ b/lib/rubygems/commands/outdated_command.rb
@@ -16,18 +16,8 @@ class Gem::Commands::OutdatedCommand < Gem::Command
   end
 
   def execute
-    Gem::Specification.outdated.sort.each do |name|
-      local   = Gem::Specification.find_all_by_name(name).max
-      dep     = Gem::Dependency.new local.name, ">= #{local.version}"
-      remotes, _ = Gem::SpecFetcher.fetcher.spec_for_dependency dep
-
-      next if remotes.empty?
-
-      remotes.sort! { |a,b| a[0].version <=> b[0].version }
-
-      highest = remotes.last.first
-
-      say "#{local.name} (#{local.version} < #{highest.version})"
+    Gem::Specification.outdated_and_latest_version.each do |spec, remote_version|
+      say "#{spec.name} (#{spec.version} < #{remote_version})"
     end
   end
 end
diff --git a/lib/rubygems/ext/builder.rb b/lib/rubygems/ext/builder.rb
index ee390578ae..8c05723573 100644
--- a/lib/rubygems/ext/builder.rb
+++ b/lib/rubygems/ext/builder.rb
@@ -4,8 +4,23 @@
 # See LICENSE.txt for permissions.
 #++
 
+require 'rubygems/user_interaction'
+require 'thread'
+
 class Gem::Ext::Builder
 
+  include Gem::UserInteraction
+
+  ##
+  # The builder shells-out to run various commands after changing the
+  # directory.  This means multiple installations cannot be allowed to build
+  # extensions in parallel as they may change each other's directories leading
+  # to broken extensions or failed installations.
+
+  CHDIR_MUTEX = Mutex.new # :nodoc:
+
+  attr_accessor :build_args # :nodoc:
+
   def self.class_name
     name =~ /Ext::(.*)Builder/
     $1.downcase
@@ -63,5 +78,108 @@ class Gem::Ext::Builder
     end
   end
 
+  ##
+  # Creates a new extension builder for +spec+ using the given +build_args+.
+  # The gem for +spec+ is unpacked in +gem_dir+.
+
+  def initialize spec, build_args
+    @spec       = spec
+    @build_args = build_args
+    @gem_dir    = spec.gem_dir
+
+    @ran_rake   = nil
+  end
+
+  ##
+  # Chooses the extension builder class for +extension+
+
+  def builder_for extension # :nodoc:
+    case extension
+    when /extconf/ then
+      Gem::Ext::ExtConfBuilder
+    when /configure/ then
+      Gem::Ext::ConfigureBuilder
+    when /rakefile/i, /mkrf_conf/i then
+      @ran_rake = true
+      Gem::Ext::RakeBuilder
+    when /CMakeLists.txt/ then
+      Gem::Ext::CmakeBuilder
+    else
+      extension_dir = File.join @gem_dir, File.dirname(extension)
+
+      message = "No builder for extension '#{extension}'"
+      build_error extension_dir, message
+    end
+  end
+
+  ##
+  # Logs the build +output+ in +build_dir+, then raises ExtensionBuildError.
+
+  def build_error build_dir, output, backtrace = nil # :nodoc:
+    gem_make_out = File.join build_dir, 'gem_make.out'
+
+    open gem_make_out, 'wb' do |io| io.puts output end
+
+    message = <<-EOF
+ERROR: Failed to build gem native extension.
+
+    #{output}
+
+Gem files will remain installed in #{@gem_dir} for inspection.
+Results logged to #{gem_make_out}
+EOF
+
+    raise Gem::Installer::ExtensionBuildError, message, backtrace
+  end
+
+  def build_extension extension, dest_path # :nodoc:
+    results = []
+
+    extension ||= '' # I wish I knew why this line existed
+    extension_dir = File.join @gem_dir, File.dirname(extension)
+
+    builder = builder_for extension
+
+    begin
+      FileUtils.mkdir_p dest_path
+
+      CHDIR_MUTEX.synchronize do
+        Dir.chdir extension_dir do
+          results = builder.build(extension, @gem_dir, dest_path,
+                                  results, @build_args)
+
+          say results.join("\n") if Gem.configuration.really_verbose
+        end
+      end
+    rescue
+      build_error extension_dir, results.join("\n"), $@
+    end
+  end
+
+  ##
+  # Builds extensions.  Valid types of extensions are extconf.rb files,
+  # configure scripts and rakefiles or mkrf_conf files.
+
+  def build_extensions
+    return if @spec.extensions.empty?
+
+    if @build_args.empty?
+      say "Building native extensions.  This could take a while..."
+    else
+      say "Building native extensions with: '#{@build_args.join ' '}'"
+      say "This could take a while..."
+    end
+
+    dest_path = File.join @gem_dir, @spec.require_paths.first
+
+    @ran_rake = false # only run rake once
+
+    @spec.extensions.each do |extension|
+      break if @ran_rake
+
+      build_extension extension, dest_path
+    end
+  end
+
 end
 
diff --git a/lib/rubygems/installer.rb b/lib/rubygems/installer.rb
index f8a520d344..49ad7dfae5 100644
--- a/lib/rubygems/installer.rb
+++ b/lib/rubygems/installer.rb
@@ -661,73 +661,20 @@ TEXT
   # configure scripts and rakefiles or mkrf_conf files.
 
   def build_extensions
-    return if spec.extensions.empty?
+    builder = Gem::Ext::Builder.new spec, @build_args
 
-    if @build_args.empty?
-      say "Building native extensions.  This could take a while..."
-    else
-      say "Building native extensions with: '#{@build_args.join(' ')}'"
-      say "This could take a while..."
-    end
-
-    dest_path = File.join gem_dir, spec.require_paths.first
-    ran_rake = false # only run rake once
-
-    spec.extensions.each do |extension|
-      break if ran_rake
-      results = []
-
-      extension ||= ""
-      extension_dir = File.join gem_dir, File.dirname(extension)
-
-      builder = case extension
-                when /extconf/ then
-                  Gem::Ext::ExtConfBuilder
-                when /configure/ then
-                  Gem::Ext::ConfigureBuilder
-                when /rakefile/i, /mkrf_conf/i then
-                  ran_rake = true
-                  Gem::Ext::RakeBuilder
-                when /CMakeLists.txt/ then
-                  Gem::Ext::CmakeBuilder
-                else
-                  message = "No builder for extension '#{extension}'"
-                  extension_build_error extension_dir, message
-                end
-
-      begin
-        FileUtils.mkdir_p dest_path
-
-        Dir.chdir extension_dir do
-          results = builder.build(extension, gem_dir, dest_path,
-                                  results, @build_args)
-
-          say results.join("\n") if Gem.configuration.really_verbose
-        end
-      rescue
-        extension_build_error(extension_dir, results.join("\n"), $@)
-      end
-    end
+    builder.build_extensions
   end
 
   ##
   # Logs the build +output+ in +build_dir+, then raises ExtensionBuildError.
+  #
+  # TODO:  Delete this for RubyGems 3.  It remains for API compatibility
 
-  def extension_build_error(build_dir, output, backtrace = nil)
-    gem_make_out = File.join build_dir, 'gem_make.out'
-
-    open gem_make_out, 'wb' do |io| io.puts output end
-
-    message = <<-EOF
-ERROR: Failed to build gem native extension.
-
-    #{output}
-
-Gem files will remain installed in #{gem_dir} for inspection.
-Results logged to #{gem_make_out}
-EOF
+  def extension_build_error(build_dir, output, backtrace = nil) # :nodoc:
+    builder = Gem::Ext::Builder.new spec, @build_args
 
-    raise ExtensionBuildError, message, backtrace
+    builder.build_error build_dir, output, backtrace
   end
 
   ##
diff --git a/lib/rubygems/remote_fetcher.rb b/lib/rubygems/remote_fetcher.rb
index 6abd6bd9db..f00555a1e2 100644
--- a/lib/rubygems/remote_fetcher.rb
+++ b/lib/rubygems/remote_fetcher.rb
@@ -325,7 +325,7 @@ class Gem::RemoteFetcher
 
   def request(uri, request_class, last_modified = nil)
     request = Gem::Request.new uri, request_class, last_modified, @proxy
-
+    
     request.fetch do |req|
       yield req if block_given?
     end
diff --git a/lib/rubygems/security.rb b/lib/rubygems/security.rb
index ef0ff12cda..bfd6fd225b 100644
--- a/lib/rubygems/security.rb
+++ b/lib/rubygems/security.rb
@@ -368,7 +368,7 @@ module Gem::Security
   # Cipher used to encrypt the key pair used to sign gems.
   # Must be in the list returned by OpenSSL::Cipher.ciphers
 
-  KEY_CIPHER = OpenSSL::Cipher.new('aes256') if defined?(OpenSSL::Cipher)
+  KEY_CIPHER = OpenSSL::Cipher.new('AES-256-CBC') if defined?(OpenSSL::Cipher)
 
   ##
   # One year in seconds
diff --git a/lib/rubygems/specification.rb b/lib/rubygems/specification.rb
index 78f62c7a89..d2d48c8501 100644
--- a/lib/rubygems/specification.rb
+++ b/lib/rubygems/specification.rb
@@ -1016,25 +1016,43 @@ class Gem::Specification < Gem::BasicSpecification
   end
 
   ##
-  # Return a list of all outdated specifications. This method is HEAVY
+  # 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
-    outdateds = []
+    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|
-      dependency = Gem::Dependency.new local.name, ">= #{local.version}"
-      remotes, _   = fetcher.search_for_dependency dependency
-      remotes      = remotes.map { |n, _| n.version }
-      latest       = remotes.sort.last
+    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 }
 
-      outdateds << local.name if latest and local.version < latest
+      latest_remote = remotes.sort.last
+
+      yield [local_spec, latest_remote] if
+        latest_remote and local_spec.version < latest_remote
     end
 
-    outdateds
+    nil
   end
 
   ##