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8552f7aa68
Only attempt to build extensions for newly-installed gems. This prevents compilation attempts at gem activation time for gems that already have extensions built. Fix crash in the dependency resolver for dependencies that cannot be resolved. * test/rubygems: ditto. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43368 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
787 lines
21 KiB
Ruby
787 lines
21 KiB
Ruby
#--
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# Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
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# All rights reserved.
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# See LICENSE.txt for permissions.
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#++
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require 'rubygems/command'
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require 'rubygems/exceptions'
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require 'rubygems/package'
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require 'rubygems/ext'
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require 'rubygems/user_interaction'
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require 'fileutils'
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##
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# The installer installs the files contained in the .gem into the Gem.home.
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#
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# Gem::Installer does the work of putting files in all the right places on the
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# filesystem including unpacking the gem into its gem dir, installing the
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# gemspec in the specifications dir, storing the cached gem in the cache dir,
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# and installing either wrappers or symlinks for executables.
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#
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# The installer invokes pre and post install hooks. Hooks can be added either
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# through a rubygems_plugin.rb file in an installed gem or via a
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# rubygems/defaults/#{RUBY_ENGINE}.rb or rubygems/defaults/operating_system.rb
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# file. See Gem.pre_install and Gem.post_install for details.
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class Gem::Installer
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##
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# Paths where env(1) might live. Some systems are broken and have it in
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# /bin
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ENV_PATHS = %w[/usr/bin/env /bin/env]
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##
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# Deprecated in favor of Gem::Ext::BuildError
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ExtensionBuildError = Gem::Ext::BuildError # :nodoc:
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include Gem::UserInteraction
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# DOC: Missing docs or :nodoc:.
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attr_reader :gem
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##
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# The directory a gem's executables will be installed into
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attr_reader :bin_dir
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##
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# The gem repository the gem will be installed into
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attr_reader :gem_home
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##
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# The options passed when the Gem::Installer was instantiated.
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attr_reader :options
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@path_warning = false
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class << self
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##
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# True if we've warned about PATH not including Gem.bindir
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attr_accessor :path_warning
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# DOC: Missing docs or :nodoc:.
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attr_writer :exec_format
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# Defaults to use Ruby's program prefix and suffix.
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def exec_format
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@exec_format ||= Gem.default_exec_format
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end
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end
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##
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# Constructs an Installer instance that will install the gem located at
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# +gem+. +options+ is a Hash with the following keys:
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#
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# :bin_dir:: Where to put a bin wrapper if needed.
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# :development:: Whether or not development dependencies should be installed.
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# :env_shebang:: Use /usr/bin/env in bin wrappers.
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# :force:: Overrides all version checks and security policy checks, except
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# for a signed-gems-only policy.
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# :format_executable:: Format the executable the same as the Ruby executable.
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# If your Ruby is ruby18, foo_exec will be installed as
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# foo_exec18.
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# :ignore_dependencies:: Don't raise if a dependency is missing.
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# :install_dir:: The directory to install the gem into.
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# :security_policy:: Use the specified security policy. See Gem::Security
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# :user_install:: Indicate that the gem should be unpacked into the users
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# personal gem directory.
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# :only_install_dir:: Only validate dependencies against what is in the
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# install_dir
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# :wrappers:: Install wrappers if true, symlinks if false.
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# :build_args:: An Array of arguments to pass to the extension builder
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# process. If not set, then Gem::Command.build_args is used
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def initialize(gem, options={})
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require 'fileutils'
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@gem = gem
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@options = options
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@package = Gem::Package.new @gem
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process_options
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@package.security_policy = @security_policy
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if options[:user_install] and not options[:unpack] then
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@gem_home = Gem.user_dir
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@bin_dir = Gem.bindir gem_home unless options[:bin_dir]
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check_that_user_bin_dir_is_in_path
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end
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end
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##
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# Checks if +filename+ exists in +@bin_dir+.
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#
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# If +@force+ is set +filename+ is overwritten.
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#
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# If +filename+ exists and is a RubyGems wrapper for different gem the user
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# is consulted.
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#
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# If +filename+ exists and +@bin_dir+ is Gem.default_bindir (/usr/local) the
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# user is consulted.
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#
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# Otherwise +filename+ is overwritten.
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def check_executable_overwrite filename # :nodoc:
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return if @force
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generated_bin = File.join @bin_dir, formatted_program_filename(filename)
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return unless File.exist? generated_bin
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ruby_executable = false
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existing = nil
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open generated_bin, 'rb' do |io|
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next unless io.gets =~ /^#!/ # shebang
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io.gets # blankline
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# TODO detect a specially formatted comment instead of trying
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# to run a regexp against Ruby code.
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next unless io.gets =~ /This file was generated by RubyGems/
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ruby_executable = true
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existing = io.read.slice(/^gem (['"])(.*?)(\1),/, 2)
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end
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return if spec.name == existing
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# somebody has written to RubyGems' directory, overwrite, too bad
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return if Gem.default_bindir != @bin_dir and not ruby_executable
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question = "#{spec.name}'s executable \"#{filename}\" conflicts with "
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if ruby_executable then
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question << existing
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return if ask_yes_no "#{question}\nOverwrite the executable?", false
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conflict = "installed executable from #{existing}"
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else
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question << generated_bin
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return if ask_yes_no "#{question}\nOverwrite the executable?", false
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conflict = generated_bin
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end
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raise Gem::InstallError,
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"\"#{filename}\" from #{spec.name} conflicts with #{conflict}"
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end
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##
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# Lazy accessor for the spec's gem directory.
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def gem_dir
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@gem_dir ||= File.join(gem_home, "gems", spec.full_name)
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end
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##
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# Lazy accessor for the installer's spec.
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def spec
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@spec ||= @package.spec
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rescue Gem::Package::Error => e
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raise Gem::InstallError, "invalid gem: #{e.message}"
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end
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##
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# Installs the gem and returns a loaded Gem::Specification for the installed
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# gem.
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#
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# The gem will be installed with the following structure:
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#
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# @gem_home/
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# cache/<gem-version>.gem #=> a cached copy of the installed gem
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# gems/<gem-version>/... #=> extracted files
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# specifications/<gem-version>.gemspec #=> the Gem::Specification
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def install
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pre_install_checks
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run_pre_install_hooks
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# Completely remove any previous gem files
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FileUtils.rm_rf gem_dir
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FileUtils.mkdir_p gem_dir
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spec.loaded_from = spec_file
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if @options[:install_as_default]
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extract_bin
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write_default_spec
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else
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extract_files
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build_extensions
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write_build_info_file
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run_post_build_hooks
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generate_bin
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write_spec
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write_cache_file
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end
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say spec.post_install_message unless spec.post_install_message.nil?
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Gem::Specification.add_spec spec unless Gem::Specification.include? spec
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run_post_install_hooks
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spec
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# TODO This rescue is in the wrong place. What is raising this exception?
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# move this rescue to around the code that actually might raise it.
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rescue Zlib::GzipFile::Error
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raise Gem::InstallError, "gzip error installing #{gem}"
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end
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def run_pre_install_hooks # :nodoc:
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Gem.pre_install_hooks.each do |hook|
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if hook.call(self) == false then
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location = " at #{$1}" if hook.inspect =~ /@(.*:\d+)/
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message = "pre-install hook#{location} failed for #{spec.full_name}"
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raise Gem::InstallError, message
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end
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end
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end
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def run_post_build_hooks # :nodoc:
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Gem.post_build_hooks.each do |hook|
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if hook.call(self) == false then
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FileUtils.rm_rf gem_dir
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location = " at #{$1}" if hook.inspect =~ /@(.*:\d+)/
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message = "post-build hook#{location} failed for #{spec.full_name}"
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raise Gem::InstallError, message
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end
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end
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end
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def run_post_install_hooks # :nodoc:
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Gem.post_install_hooks.each do |hook|
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hook.call self
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end
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end
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##
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#
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# Return an Array of Specifications contained within the gem_home
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# we'll be installing into.
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def installed_specs
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@specs ||= begin
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specs = []
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Dir[File.join(gem_home, "specifications", "*.gemspec")].each do |path|
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spec = Gem::Specification.load path.untaint
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specs << spec if spec
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end
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specs
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end
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end
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##
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# Ensure that the dependency is satisfied by the current installation of
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# gem. If it is not an exception is raised.
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#
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# spec :: Gem::Specification
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# dependency :: Gem::Dependency
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def ensure_dependency(spec, dependency)
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unless installation_satisfies_dependency? dependency then
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raise Gem::InstallError, "#{spec.name} requires #{dependency}"
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end
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true
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end
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##
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# True if the gems in the system satisfy +dependency+.
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def installation_satisfies_dependency?(dependency)
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return true if installed_specs.detect { |s| dependency.matches_spec? s }
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return false if @only_install_dir
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not dependency.matching_specs.empty?
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end
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##
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# Unpacks the gem into the given directory.
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def unpack(directory)
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@gem_dir = directory
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extract_files
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end
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##
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# The location of of the spec file that is installed.
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#
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def spec_file
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File.join gem_home, "specifications", "#{spec.full_name}.gemspec"
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end
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##
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# The location of of the default spec file for default gems.
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#
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def default_spec_file
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File.join gem_home, "specifications/default", "#{spec.full_name}.gemspec"
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end
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##
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# Writes the .gemspec specification (in Ruby) to the gem home's
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# specifications directory.
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def write_spec
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open spec_file, 'w' do |file|
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spec.installed_by_version = Gem.rubygems_version
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file.puts spec.to_ruby_for_cache
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file.fsync rescue nil # for filesystems without fsync(2)
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end
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end
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##
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# Writes the full .gemspec specification (in Ruby) to the gem home's
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# specifications/default directory.
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def write_default_spec
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File.open(default_spec_file, "w") do |file|
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file.puts spec.to_ruby
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end
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end
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##
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# Creates windows .bat files for easy running of commands
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def generate_windows_script(filename, bindir)
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if Gem.win_platform? then
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script_name = filename + ".bat"
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script_path = File.join bindir, File.basename(script_name)
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File.open script_path, 'w' do |file|
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file.puts windows_stub_script(bindir, filename)
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end
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say script_path if Gem.configuration.really_verbose
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end
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end
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# DOC: Missing docs or :nodoc:.
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def generate_bin
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return if spec.executables.nil? or spec.executables.empty?
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Dir.mkdir @bin_dir unless File.exist? @bin_dir
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raise Gem::FilePermissionError.new(@bin_dir) unless File.writable? @bin_dir
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spec.executables.each do |filename|
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filename.untaint
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bin_path = File.join gem_dir, spec.bindir, filename
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unless File.exist? bin_path then
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# TODO change this to a more useful warning
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warn "#{bin_path} maybe `gem pristine #{spec.name}` will fix it?"
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next
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end
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mode = File.stat(bin_path).mode | 0111
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FileUtils.chmod mode, bin_path
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check_executable_overwrite filename
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if @wrappers then
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generate_bin_script filename, @bin_dir
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else
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generate_bin_symlink filename, @bin_dir
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end
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end
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end
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##
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# Creates the scripts to run the applications in the gem.
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#--
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# The Windows script is generated in addition to the regular one due to a
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# bug or misfeature in the Windows shell's pipe. See
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# http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/193379
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def generate_bin_script(filename, bindir)
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bin_script_path = File.join bindir, formatted_program_filename(filename)
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FileUtils.rm_f bin_script_path # prior install may have been --no-wrappers
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File.open bin_script_path, 'wb', 0755 do |file|
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file.print app_script_text(filename)
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end
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say bin_script_path if Gem.configuration.really_verbose
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generate_windows_script filename, bindir
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end
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##
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# Creates the symlinks to run the applications in the gem. Moves
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# the symlink if the gem being installed has a newer version.
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def generate_bin_symlink(filename, bindir)
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if Gem.win_platform? then
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alert_warning "Unable to use symlinks on Windows, installing wrapper"
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generate_bin_script filename, bindir
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return
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end
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src = File.join gem_dir, spec.bindir, filename
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dst = File.join bindir, formatted_program_filename(filename)
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if File.exist? dst then
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if File.symlink? dst then
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link = File.readlink(dst).split File::SEPARATOR
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cur_version = Gem::Version.create(link[-3].sub(/^.*-/, ''))
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return if spec.version < cur_version
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end
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File.unlink dst
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end
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FileUtils.symlink src, dst, :verbose => Gem.configuration.really_verbose
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end
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##
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# Generates a #! line for +bin_file_name+'s wrapper copying arguments if
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# necessary.
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#
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# If the :custom_shebang config is set, then it is used as a template
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# for how to create the shebang used for to run a gem's executables.
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#
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# The template supports 4 expansions:
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#
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# $env the path to the unix env utility
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# $ruby the path to the currently running ruby interpreter
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# $exec the path to the gem's executable
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# $name the name of the gem the executable is for
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#
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def shebang(bin_file_name)
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ruby_name = Gem::ConfigMap[:ruby_install_name] if @env_shebang
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path = File.join gem_dir, spec.bindir, bin_file_name
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first_line = File.open(path, "rb") {|file| file.gets}
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if /\A#!/ =~ first_line then
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# Preserve extra words on shebang line, like "-w". Thanks RPA.
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shebang = first_line.sub(/\A\#!.*?ruby\S*((\s+\S+)+)/, "#!#{Gem.ruby}")
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opts = $1
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shebang.strip! # Avoid nasty ^M issues.
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end
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if which = Gem.configuration[:custom_shebang]
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# replace bin_file_name with "ruby" to avoid endless loops
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which = which.gsub(/ #{bin_file_name}$/," #{Gem::ConfigMap[:ruby_install_name]}")
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which = which.gsub(/\$(\w+)/) do
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case $1
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when "env"
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@env_path ||= ENV_PATHS.find {|env_path| File.executable? env_path }
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when "ruby"
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"#{Gem.ruby}#{opts}"
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when "exec"
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bin_file_name
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when "name"
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spec.name
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end
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end
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"#!#{which}"
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elsif not ruby_name then
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"#!#{Gem.ruby}#{opts}"
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elsif opts then
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"#!/bin/sh\n'exec' #{ruby_name.dump} '-x' \"$0\" \"$@\"\n#{shebang}"
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else
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# Create a plain shebang line.
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@env_path ||= ENV_PATHS.find {|env_path| File.executable? env_path }
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"#!#{@env_path} #{ruby_name}"
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end
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end
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##
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# Ensures the Gem::Specification written out for this gem is loadable upon
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# installation.
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def ensure_loadable_spec
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ruby = spec.to_ruby_for_cache
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ruby.untaint
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begin
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eval ruby
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rescue StandardError, SyntaxError => e
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raise Gem::InstallError,
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"The specification for #{spec.full_name} is corrupt (#{e.class})"
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end
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end
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# DOC: Missing docs or :nodoc:.
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def ensure_required_ruby_version_met
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if rrv = spec.required_ruby_version then
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unless rrv.satisfied_by? Gem.ruby_version then
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raise Gem::InstallError, "#{spec.name} requires Ruby version #{rrv}."
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end
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end
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end
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# DOC: Missing docs or :nodoc:.
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def ensure_required_rubygems_version_met
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if rrgv = spec.required_rubygems_version then
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unless rrgv.satisfied_by? Gem.rubygems_version then
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raise Gem::InstallError,
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"#{spec.name} requires RubyGems version #{rrgv}. " +
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"Try 'gem update --system' to update RubyGems itself."
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end
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end
|
|
end
|
|
|
|
# DOC: Missing docs or :nodoc:.
|
|
def ensure_dependencies_met
|
|
deps = spec.runtime_dependencies
|
|
deps |= spec.development_dependencies if @development
|
|
|
|
deps.each do |dep_gem|
|
|
ensure_dependency spec, dep_gem
|
|
end
|
|
end
|
|
|
|
# DOC: Missing docs or :nodoc:.
|
|
def process_options
|
|
@options = {
|
|
:bin_dir => nil,
|
|
:env_shebang => false,
|
|
:force => false,
|
|
:only_install_dir => false
|
|
}.merge options
|
|
|
|
@env_shebang = options[:env_shebang]
|
|
@force = options[:force]
|
|
@install_dir = options[:install_dir]
|
|
@gem_home = options[:install_dir] || Gem.dir
|
|
@ignore_dependencies = options[:ignore_dependencies]
|
|
@format_executable = options[:format_executable]
|
|
@security_policy = options[:security_policy]
|
|
@wrappers = options[:wrappers]
|
|
@only_install_dir = options[:only_install_dir]
|
|
|
|
# If the user has asked for the gem to be installed in a directory that is
|
|
# the system gem directory, then use the system bin directory, else create
|
|
# (or use) a new bin dir under the gem_home.
|
|
@bin_dir = options[:bin_dir] || Gem.bindir(gem_home)
|
|
@development = options[:development]
|
|
|
|
@build_args = options[:build_args] || Gem::Command.build_args
|
|
end
|
|
|
|
# DOC: Missing docs or :nodoc:.
|
|
def check_that_user_bin_dir_is_in_path
|
|
user_bin_dir = @bin_dir || Gem.bindir(gem_home)
|
|
user_bin_dir = user_bin_dir.gsub(File::SEPARATOR, File::ALT_SEPARATOR) if
|
|
File::ALT_SEPARATOR
|
|
|
|
path = ENV['PATH']
|
|
if Gem.win_platform? then
|
|
path = path.downcase
|
|
user_bin_dir = user_bin_dir.downcase
|
|
end
|
|
|
|
unless path.split(File::PATH_SEPARATOR).include? user_bin_dir then
|
|
unless self.class.path_warning then
|
|
alert_warning "You don't have #{user_bin_dir} in your PATH,\n\t gem executables will not run."
|
|
self.class.path_warning = true
|
|
end
|
|
end
|
|
end
|
|
|
|
# DOC: Missing docs or :nodoc:.
|
|
def verify_gem_home(unpack = false)
|
|
FileUtils.mkdir_p gem_home
|
|
raise Gem::FilePermissionError, gem_home unless
|
|
unpack or File.writable?(gem_home)
|
|
end
|
|
|
|
##
|
|
# Return the text for an application file.
|
|
|
|
def app_script_text(bin_file_name)
|
|
return <<-TEXT
|
|
#{shebang bin_file_name}
|
|
#
|
|
# This file was generated by RubyGems.
|
|
#
|
|
# The application '#{spec.name}' is installed as part of a gem, and
|
|
# this file is here to facilitate running it.
|
|
#
|
|
|
|
require 'rubygems'
|
|
|
|
version = "#{Gem::Requirement.default}"
|
|
|
|
if ARGV.first
|
|
str = ARGV.first
|
|
str = str.dup.force_encoding("BINARY") if str.respond_to? :force_encoding
|
|
if str =~ /\\A_(.*)_\\z/
|
|
version = $1
|
|
ARGV.shift
|
|
end
|
|
end
|
|
|
|
gem '#{spec.name}', version
|
|
load Gem.bin_path('#{spec.name}', '#{bin_file_name}', version)
|
|
TEXT
|
|
end
|
|
|
|
##
|
|
# return the stub script text used to launch the true Ruby script
|
|
|
|
def windows_stub_script(bindir, bin_file_name)
|
|
ruby = File.basename(Gem.ruby).chomp('"')
|
|
return <<-TEXT
|
|
@ECHO OFF
|
|
IF NOT "%~f0" == "~f0" GOTO :WinNT
|
|
@"#{ruby}" "#{File.join(bindir, bin_file_name)}" %1 %2 %3 %4 %5 %6 %7 %8 %9
|
|
GOTO :EOF
|
|
:WinNT
|
|
@"#{ruby}" "%~dpn0" %*
|
|
TEXT
|
|
end
|
|
|
|
##
|
|
# Builds extensions. Valid types of extensions are extconf.rb files,
|
|
# configure scripts and rakefiles or mkrf_conf files.
|
|
|
|
def build_extensions
|
|
builder = Gem::Ext::Builder.new spec, @build_args
|
|
|
|
builder.build_extensions
|
|
end
|
|
|
|
##
|
|
# Logs the build +output+ in +build_dir+, then raises Gem::Ext::BuildError.
|
|
#
|
|
# TODO: Delete this for RubyGems 3. It remains for API compatibility
|
|
|
|
def extension_build_error(build_dir, output, backtrace = nil) # :nodoc:
|
|
builder = Gem::Ext::Builder.new spec, @build_args
|
|
|
|
builder.build_error build_dir, output, backtrace
|
|
end
|
|
|
|
##
|
|
# Reads the file index and extracts each file into the gem directory.
|
|
#
|
|
# Ensures that files can't be installed outside the gem directory.
|
|
|
|
def extract_files
|
|
@package.extract_files gem_dir
|
|
end
|
|
|
|
##
|
|
# Extracts only the bin/ files from the gem into the gem directory.
|
|
# This is used by default gems to allow a gem-aware stub to function
|
|
# without the full gem installed.
|
|
|
|
def extract_bin
|
|
@package.extract_files gem_dir, "bin/*"
|
|
end
|
|
|
|
##
|
|
# Prefix and suffix the program filename the same as ruby.
|
|
|
|
def formatted_program_filename(filename)
|
|
if @format_executable then
|
|
self.class.exec_format % File.basename(filename)
|
|
else
|
|
filename
|
|
end
|
|
end
|
|
|
|
##
|
|
#
|
|
# Return the target directory where the gem is to be installed. This
|
|
# directory is not guaranteed to be populated.
|
|
#
|
|
|
|
def dir
|
|
gem_dir.to_s
|
|
end
|
|
|
|
##
|
|
# Performs various checks before installing the gem such as the install
|
|
# repository is writable and its directories exist, required Ruby and
|
|
# rubygems versions are met and that dependencies are installed.
|
|
#
|
|
# Version and dependency checks are skipped if this install is forced.
|
|
#
|
|
# The dependent check will be skipped this install is ignoring dependencies.
|
|
|
|
def pre_install_checks
|
|
verify_gem_home options[:unpack]
|
|
|
|
# If we're forcing the install then disable security unless the security
|
|
# policy says that we only install signed gems.
|
|
@security_policy = nil if
|
|
@force and @security_policy and not @security_policy.only_signed
|
|
|
|
ensure_loadable_spec
|
|
|
|
if options[:install_as_default]
|
|
Gem.ensure_default_gem_subdirectories gem_home
|
|
else
|
|
Gem.ensure_gem_subdirectories gem_home
|
|
end
|
|
|
|
return true if @force
|
|
|
|
ensure_required_ruby_version_met
|
|
ensure_required_rubygems_version_met
|
|
ensure_dependencies_met unless @ignore_dependencies
|
|
|
|
true
|
|
end
|
|
|
|
##
|
|
# Writes the file containing the arguments for building this gem's
|
|
# extensions.
|
|
|
|
def write_build_info_file
|
|
return if @build_args.empty?
|
|
|
|
build_info_dir = File.join gem_home, 'build_info'
|
|
|
|
FileUtils.mkdir_p build_info_dir
|
|
|
|
build_info_file = File.join build_info_dir, "#{spec.full_name}.info"
|
|
|
|
open build_info_file, 'w' do |io|
|
|
@build_args.each do |arg|
|
|
io.puts arg
|
|
end
|
|
end
|
|
end
|
|
|
|
##
|
|
# Writes the .gem file to the cache directory
|
|
|
|
def write_cache_file
|
|
cache_file = File.join gem_home, 'cache', spec.file_name
|
|
|
|
FileUtils.cp @gem, cache_file unless File.exist? cache_file
|
|
end
|
|
|
|
end
|
|
|