Gem::Installer

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 101
def self.at path, options = {}
  security_policy = options[:security_policy]
  package = Gem::Package.new path, security_policy
  new package, options
end

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 92
def exec_format
  @exec_format ||= Gem.default_exec_format
end

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 133
def self.for_spec spec, options = {}
  # FIXME: we should have a real Package class for this
  new FakePackage.new(spec), options
end

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 161
def initialize(package, options={})
  require 'fileutils'

  @options = options
  if package.is_a? String
    security_policy = options[:security_policy]
    @package = Gem::Package.new package, security_policy
    if $VERBOSE
      warn "constructing an Installer object with a string is deprecated. Please use Gem::Installer.at (called from: #{caller.first})"
    end
  else
    @package = package
  end

  process_options

  if options[:user_install] and not options[:unpack] then
    @gem_home = Gem.user_dir
    @bin_dir = Gem.bindir gem_home unless options[:bin_dir]
    check_that_user_bin_dir_is_in_path
  end
end

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 725
  def app_script_text(bin_file_name)
    # note that the `load` lines cannot be indented, as old RG versions match
    # against the beginning of the line
    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}.a"

if ARGV.first
  str = ARGV.first
  str = str.dup.force_encoding("BINARY") if str.respond_to? :force_encoding
  if str =~ /\\A_(.*)_\\z/ and Gem::Version.correct?($1) then
    version = $1
    ARGV.shift
  end
end

if Gem.respond_to?(:activate_bin_path)
load Gem.activate_bin_path('#{spec.name}', '#{bin_file_name}', version)
else
gem #{spec.name.dump}, version
load Gem.bin_path(#{spec.name.dump}, #{bin_file_name.dump}, version)
end
TEXT
  end

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 778
def build_extensions
  builder = Gem::Ext::Builder.new spec, @build_args

  builder.build_extensions
end

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 419
def default_spec_file
  File.join Gem::Specification.default_specifications_dir, "#{spec.full_name}.gemspec"
end

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 830
def dir
  gem_dir.to_s
end

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 382
def ensure_dependency(spec, dependency)
  unless installation_satisfies_dependency? dependency then
    raise Gem::InstallError, "#{spec.name} requires #{dependency}"
  end
  true
end

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 596
def ensure_loadable_spec
  ruby = spec.to_ruby_for_cache
  ruby.untaint

  begin
    eval ruby
  rescue StandardError, SyntaxError => e
    raise Gem::InstallError,
          "The specification for #{spec.full_name} is corrupt (#{e.class})"
  end
end

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 809
def extract_bin
  @package.extract_files gem_dir, "bin/*"
end

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 800
def extract_files
  @package.extract_files gem_dir
end

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 816
def formatted_program_filename(filename)
  if @format_executable then
    self.class.exec_format % File.basename(filename)
  else
    filename
  end
end

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 254
def gem_dir
  @gem_dir ||= File.join(gem_home, "gems", spec.full_name)
end

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 499
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

  verbose bin_script_path

  generate_windows_script filename, bindir
end

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 517
def generate_bin_symlink(filename, bindir)
  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
rescue NotImplementedError, SystemCallError
  alert_warning "Unable to use symlinks, installing wrapper"
  generate_bin_script filename, bindir
end

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 450
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

    verbose script_path
  end
end

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 278
def install
  pre_install_checks

  FileUtils.rm_f File.join gem_home, 'specifications', spec.spec_name

  run_pre_install_hooks

  # Set loaded_from to ensure extension_dir is correct
  if @options[:install_as_default] then
    spec.loaded_from = default_spec_file
  else
    spec.loaded_from = spec_file
  end

  # Completely remove any previous gem files
  FileUtils.rm_rf gem_dir
  FileUtils.rm_rf spec.extension_dir

  FileUtils.mkdir_p gem_dir

  if @options[:install_as_default] then
    extract_bin
    write_default_spec
  else
    extract_files

    build_extensions
    write_build_info_file
    run_post_build_hooks

    generate_bin
    write_spec
    write_cache_file
  end

  say spec.post_install_message if options[:post_install_message] && !spec.post_install_message.nil?

  Gem::Installer.install_lock.synchronize { Gem::Specification.reset }

  run_post_install_hooks

  spec

# TODO This rescue is in the wrong place. What is raising this exception?
# move this rescue to around the code that actually might raise it.
rescue Zlib::GzipFile::Error
  raise Gem::InstallError, "gzip error installing #{gem}"
end

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 392
def installation_satisfies_dependency?(dependency)
  return true if @options[:development] and dependency.type == :development
  return true if installed_specs.detect { |s| dependency.matches_spec? s }
  return false if @only_install_dir
  not dependency.matching_specs.empty?
end

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 362
def installed_specs
  @specs ||= begin
    specs = []

    Dir[File.join(gem_home, "specifications", "*.gemspec")].each do |path|
      spec = Gem::Specification.load path.untaint
      specs << spec if spec
    end

    specs
  end
end

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 843
def pre_install_checks
  verify_gem_home options[:unpack]

  # The name and require_paths must be verified first, since it could contain
  # ruby code that would be eval'ed in #ensure_loadable_spec
  verify_spec

  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

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 551
def shebang(bin_file_name)
  ruby_name = RbConfig::CONFIG['ruby_install_name'] if @env_shebang
  path = File.join gem_dir, spec.bindir, 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 which = Gem.configuration[:custom_shebang]
    # replace bin_file_name with "ruby" to avoid endless loops
    which = which.gsub(/ #{bin_file_name}$/," #{RbConfig::CONFIG['ruby_install_name']}")

    which = which.gsub(/\$(\w+)/) do
      case $1
      when "env"
        @env_path ||= ENV_PATHS.find {|env_path| File.executable? env_path }
      when "ruby"
        "#{Gem.ruby}#{opts}"
      when "exec"
        bin_file_name
      when "name"
        spec.name
      end
    end

    "#!#{which}"
  elsif 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

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 261
def spec
  @package.spec
rescue Gem::Package::Error => e
  raise Gem::InstallError, "invalid gem: #{e.message}"
end

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 411
def spec_file
  File.join gem_home, "specifications", "#{spec.full_name}.gemspec"
end

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 402
def unpack(directory)
  @gem_dir = directory
  extract_files
end

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 700
def verify_spec
  unless spec.name =~ Gem::Specification::VALID_NAME_PATTERN
    raise Gem::InstallError, "#{spec} has an invalid name"
  end

  if spec.raw_require_paths.any?{|path| path =~ /\r\n|\r|\n/ }
    raise Gem::InstallError, "#{spec} has an invalid require_paths"
  end

  if spec.extensions.any?{|ext| ext =~ /\r\n|\r|\n/ }
    raise Gem::InstallError, "#{spec} has an invalid extensions"
  end

  unless spec.specification_version.to_s =~ /\A\d+\z/
    raise Gem::InstallError, "#{spec} has an invalid specification_version"
  end

  if spec.dependencies.any? {|dep| dep.type =~ /\r\n|\r|\n/ || dep.name =~ /\r\n|\r|\n/ }
    raise Gem::InstallError, "#{spec} has an invalid dependencies"
  end
end

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 762
  def windows_stub_script(bindir, bin_file_name)
    ruby = Gem.ruby.gsub(/^\"|\"$/, "").tr(File::SEPARATOR, "\\")
    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

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 871
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

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 890
def write_cache_file
  cache_file = File.join gem_home, 'cache', spec.file_name
  @package.copy_to cache_file
end

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 441
def write_default_spec
  File.open(default_spec_file, "w") do |file|
    file.puts spec.to_ruby
  end
end

          
        

          
            
# File tmp/rubies/ruby-2.4.10/lib/rubygems/installer.rb, line 427
def write_spec
  open spec_file, 'w' do |file|
    spec.installed_by_version = Gem.rubygems_version

    file.puts spec.to_ruby_for_cache

    file.fsync rescue nil # for filesystems without fsync(2)
  end
end