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files >> //opt/alt/ruby19/lib64/ruby/1.9.1/rubygems/installer.rb
#-- # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others. # All rights reserved. # See LICENSE.txt for permissions. #++ require 'rubygems/format' require 'rubygems/exceptions' require 'rubygems/ext' require 'rubygems/require_paths_builder' require 'rubygems/user_interaction' ## # The installer class processes RubyGem .gem files and installs the files # contained in the .gem into the Gem.path. # # Gem::Installer does the work of putting files in all the right places on the # filesystem including unpacking the gem into its gem dir, installing the # gemspec in the specifications dir, storing the cached gem in the cache dir, # and installing either wrappers or symlinks for executables. # # The installer invokes pre and post install hooks. Hooks can be added either # through a rubygems_plugin.rb file in an installed gem or via a # rubygems/defaults/#{RUBY_ENGINE}.rb or rubygems/defaults/operating_system.rb # file. See Gem.pre_install and Gem.post_install for details. class Gem::Installer ## # Paths where env(1) might live. Some systems are broken and have it in # /bin ENV_PATHS = %w[/usr/bin/env /bin/env] ## # Raised when there is an error while building extensions. # class ExtensionBuildError < Gem::InstallError; end include Gem::UserInteraction include Gem::RequirePathsBuilder if Gem::QUICKLOADER_SUCKAGE attr_reader :gem ## # The directory a gem's executables will be installed into attr_reader :bin_dir ## # The gem repository the gem will be installed into attr_reader :gem_home ## # The options passed when the Gem::Installer was instantiated. attr_reader :options @path_warning = false class << self ## # True if we've warned about PATH not including Gem.bindir attr_accessor :path_warning attr_writer :exec_format # Defaults to use Ruby's program prefix and suffix. def exec_format @exec_format ||= Gem.default_exec_format end end ## # Constructs an Installer instance that will install the gem located at # +gem+. +options+ is a Hash with the following keys: # # :env_shebang:: Use /usr/bin/env in bin wrappers. # :force:: Overrides all version checks and security policy checks, except # for a signed-gems-only policy. # :ignore_dependencies:: Don't raise if a dependency is missing. # :install_dir:: The directory to install the gem into. # :format_executable:: Format the executable the same as the ruby executable. # If your ruby is ruby18, foo_exec will be installed as # foo_exec18. # :security_policy:: Use the specified security policy. See Gem::Security # :wrappers:: Install wrappers if true, symlinks if false. def initialize(gem, options={}) require 'fileutils' @gem = gem @options = options process_options if options[:user_install] and not options[:unpack] then @gem_home = Gem.user_dir check_that_user_bin_dir_is_in_path end end ## # Lazy accessor for the spec's gem directory. def gem_dir @gem_dir ||= spec.gem_dir.dup.untaint end ## # Lazy accessor for the installer's Gem::Format instance. def format begin @format ||= Gem::Format.from_file_by_path gem, @security_policy rescue Gem::Package::FormatError raise Gem::InstallError, "invalid gem format for #{gem}" end end ## # Lazy accessor for the installer's spec. def spec @spec ||= format.spec end ## # Installs the gem and returns a loaded Gem::Specification for the installed # gem. # # The gem will be installed with the following structure: # # @gem_home/ # cache/<gem-version>.gem #=> a cached copy of the installed gem # gems/<gem-version>/... #=> extracted files # specifications/<gem-version>.gemspec #=> the Gem::Specification def install current_home = Gem.dir current_path = Gem.paths.path verify_gem_home(options[:unpack]) Gem.use_paths gem_home, current_path # HACK: shouldn't need Gem.paths.path # 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 unless @force ensure_required_ruby_version_met ensure_required_rubygems_version_met ensure_dependencies_met unless @ignore_dependencies end Gem.pre_install_hooks.each do |hook| result = hook.call self if result == false then location = " at #{$1}" if hook.inspect =~ /@(.*:\d+)/ message = "pre-install hook#{location} failed for #{spec.full_name}" raise Gem::InstallError, message end end Gem.ensure_gem_subdirectories gem_home # Completely remove any previous gem files FileUtils.rm_rf(gem_dir) if File.exist? gem_dir FileUtils.mkdir_p gem_dir extract_files build_extensions Gem.post_build_hooks.each do |hook| result = hook.call self if result == false then FileUtils.rm_rf gem_dir location = " at #{$1}" if hook.inspect =~ /@(.*:\d+)/ message = "post-build hook#{location} failed for #{spec.full_name}" raise Gem::InstallError, message end end generate_bin write_spec write_require_paths_file_if_needed if Gem::QUICKLOADER_SUCKAGE cache_file = spec.cache_file FileUtils.cp gem, cache_file unless File.exist? cache_file say spec.post_install_message unless spec.post_install_message.nil? spec.loaded_from = spec.spec_file Gem::Specification.add_spec spec unless Gem::Specification.include? spec Gem.post_install_hooks.each do |hook| hook.call self end return spec rescue Zlib::GzipFile::Error raise Gem::InstallError, "gzip error installing #{gem}" ensure # conditional since we might be here because we're erroring out early. if current_path Gem.use_paths current_home, current_path end end ## # Ensure that the dependency is satisfied by the current installation of # gem. If it is not an exception is raised. # # spec :: Gem::Specification # dependency :: Gem::Dependency def ensure_dependency(spec, dependency) unless installation_satisfies_dependency? dependency then raise Gem::InstallError, "#{spec.name} requires #{dependency}" end true end ## # True if the gems in the source_index satisfy +dependency+. def installation_satisfies_dependency?(dependency) not dependency.matching_specs.empty? end ## # Unpacks the gem into the given directory. def unpack(directory) @gem_dir = directory @format = Gem::Format.from_file_by_path gem, @security_policy extract_files end ## # Writes the .gemspec specification (in Ruby) to the gem home's # specifications directory. def write_spec file_name = spec.spec_file.untaint File.open(file_name, "w") do |file| file.puts spec.to_ruby_for_cache end end ## # Creates windows .bat files for easy running of commands def generate_windows_script(filename, bindir) if Gem.win_platform? then script_name = filename + ".bat" script_path = File.join bindir, File.basename(script_name) File.open script_path, 'w' do |file| file.puts windows_stub_script(bindir, filename) end say script_path if Gem.configuration.really_verbose end end def generate_bin return if spec.executables.nil? or spec.executables.empty? # 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. bindir = @bin_dir || Gem.bindir(gem_home) Dir.mkdir bindir unless File.exist? bindir raise Gem::FilePermissionError.new(bindir) unless File.writable? bindir spec.executables.each do |filename| filename.untaint bin_path = File.expand_path File.join(gem_dir, spec.bindir, filename) unless File.exist? bin_path warn "Hey?!?! Where did #{bin_path} go??" next end mode = File.stat(bin_path).mode | 0111 FileUtils.chmod mode, bin_path if @wrappers then generate_bin_script filename, bindir else generate_bin_symlink filename, bindir end end end ## # Creates the scripts to run the applications in the gem. #-- # The Windows script is generated in addition to the regular one due to a # bug or misfeature in the Windows shell's pipe. See # http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/193379 def generate_bin_script(filename, bindir) bin_script_path = File.join bindir, formatted_program_filename(filename) FileUtils.rm_f bin_script_path # prior install may have been --no-wrappers File.open bin_script_path, 'wb', 0755 do |file| file.print app_script_text(filename) end say bin_script_path if Gem.configuration.really_verbose generate_windows_script filename, bindir end ## # Creates the symlinks to run the applications in the gem. Moves # the symlink if the gem being installed has a newer version. def generate_bin_symlink(filename, bindir) if Gem.win_platform? then alert_warning "Unable to use symlinks on Windows, installing wrapper" generate_bin_script filename, bindir return end src = File.join gem_dir, spec.bindir, filename dst = File.join bindir, formatted_program_filename(filename) if File.exist? dst then if File.symlink? dst then link = File.readlink(dst).split File::SEPARATOR cur_version = Gem::Version.create(link[-3].sub(/^.*-/, '')) return if spec.version < cur_version end File.unlink dst end FileUtils.symlink src, dst, :verbose => Gem.configuration.really_verbose end ## # Generates a #! line for +bin_file_name+'s wrapper copying arguments if # necessary. def shebang(bin_file_name) ruby_name = Gem::ConfigMap[:ruby_install_name] if @env_shebang path = spec.bin_file bin_file_name first_line = File.open(path, "rb") {|file| file.gets} if /\A#!/ =~ first_line then # Preserve extra words on shebang line, like "-w". Thanks RPA. shebang = first_line.sub(/\A\#!.*?ruby\S*((\s+\S+)+)/, "#!#{Gem.ruby}") opts = $1 shebang.strip! # Avoid nasty ^M issues. end if not ruby_name then "#!#{Gem.ruby}#{opts}" elsif opts then "#!/bin/sh\n'exec' #{ruby_name.dump} '-x' \"$0\" \"$@\"\n#{shebang}" else # Create a plain shebang line. @env_path ||= ENV_PATHS.find {|env_path| File.executable? env_path } "#!#{@env_path} #{ruby_name}" end end def ensure_required_ruby_version_met if rrv = spec.required_ruby_version then unless rrv.satisfied_by? Gem.ruby_version then raise Gem::InstallError, "#{spec.name} requires Ruby version #{rrv}." end end end def ensure_required_rubygems_version_met if rrgv = spec.required_rubygems_version then unless rrgv.satisfied_by? Gem::Version.new(Gem::VERSION) then raise Gem::InstallError, "#{spec.name} requires RubyGems version #{rrgv}. " + "Try 'gem update --system' to update RubyGems itself." end end end 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 def process_options @options = { :bin_dir => nil, :env_shebang => false, :exec_format => false, :force => false, :install_dir => Gem.dir, }.merge options @env_shebang = options[:env_shebang] @force = options[:force] @gem_home = options[:install_dir] @ignore_dependencies = options[:ignore_dependencies] @format_executable = options[:format_executable] @security_policy = options[:security_policy] @wrappers = options[:wrappers] @bin_dir = options[:bin_dir] @development = options[:development] raise "NOTE: Installer option :source_index is dead" if options[:source_index] end def check_that_user_bin_dir_is_in_path user_bin_dir = @bin_dir || Gem.bindir(gem_home) 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 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 return if spec.extensions.empty? say "Building native extensions. This could take a while..." 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 = [] 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 else results = ["No builder for extension '#{extension}'"] nil end extension_dir = begin File.join gem_dir, File.dirname(extension) rescue TypeError # extension == nil gem_dir end begin Dir.chdir extension_dir do results = builder.build(extension, gem_dir, dest_path, results) say results.join("\n") if Gem.configuration.really_verbose end rescue results = results.join "\n" gem_make_out = File.join extension_dir, 'gem_make.out' open gem_make_out, 'wb' do |io| io.puts results end message = <<-EOF ERROR: Failed to build gem native extension. #{results} Gem files will remain installed in #{gem_dir} for inspection. Results logged to #{gem_make_out} EOF raise ExtensionBuildError, message end end 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 raise ArgumentError, "format required to extract from" if @format.nil? @format.file_entries.each do |entry, file_data| path = entry['path'].untaint if path.start_with? "/" then # for extra sanity raise Gem::InstallError, "attempt to install file into #{entry['path']}" end path = File.expand_path File.join(gem_dir, path) unless path.start_with? gem_dir then msg = "attempt to install file into %p under %s" % [entry['path'], gem_dir] raise Gem::InstallError, msg end FileUtils.rm_rf(path) if File.exist? path dir = File.dirname path FileUtils.mkdir_p dir unless File.exist? dir File.open(path, "wb") do |out| out.write file_data end FileUtils.chmod entry['mode'], path say path if Gem.configuration.really_verbose end 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 end
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