# File lib/bundler.rb, line 250
def app_cache(custom_path = nil)
  path = custom_path || root
  Pathname.new(path).join(settings.app_cache_path)
end

# File lib/bundler.rb, line 242
def app_config_path
  if app_config = ENV["BUNDLE_APP_CONFIG"]
    Pathname.new(app_config).expand_path(root)
  else
    root.join(".bundle")
  end
end

# File lib/bundler.rb, line 88
def bin_path
  @bin_path ||= begin
    path = settings[:bin] || "bin"
    path = Pathname.new(path).expand_path(root).expand_path
    SharedHelpers.filesystem_access(path) {|p| FileUtils.mkdir_p(p) }
    path
  end
end

# File lib/bundler.rb, line 79
def bundle_path
  @bundle_path ||= Pathname.new(configured_bundle_path.path).expand_path(root)
end

# File lib/bundler/version.rb, line 25
def self.bundler_major_version
  @bundler_major_version ||= VERSION.split(".").first.to_i
end

# File lib/bundler.rb, line 285
def clean_env
  Bundler::SharedHelpers.major_deprecation(2, "`Bundler.clean_env` has weird edge cases, use `.original_env` instead")
  env = original_env

  if env.key?("BUNDLER_ORIG_MANPATH")
    env["MANPATH"] = env["BUNDLER_ORIG_MANPATH"]
  end

  env.delete_if {|k, _| k[0, 7] == "BUNDLE_" }

  if env.key?("RUBYOPT")
    env["RUBYOPT"] = env["RUBYOPT"].sub "-rbundler/setup", ""
  end

  if env.key?("RUBYLIB")
    rubylib = env["RUBYLIB"].split(File::PATH_SEPARATOR)
    rubylib.delete(File.expand_path("..", __FILE__))
    env["RUBYLIB"] = rubylib.join(File::PATH_SEPARATOR)
  end

  env
end

# File lib/bundler.rb, line 320
def clean_exec(*args)
  with_clean_env { Kernel.exec(*args) }
end

# File lib/bundler.rb, line 316
def clean_system(*args)
  with_clean_env { Kernel.system(*args) }
end

# File lib/bundler.rb, line 468
def clear_gemspec_cache
  @gemspec_cache = {}
end

# File lib/bundler.rb, line 65
def configure
  @configured ||= configure_gem_home_and_path
end

# File lib/bundler.rb, line 83
def configured_bundle_path
  @configured_bundle_path ||= settings.path.tap(&:validate!)
end

# File lib/bundler/current_ruby.rb, line 7
def self.current_ruby
  @current_ruby ||= CurrentRuby.new
end

# File lib/bundler.rb, line 337
def default_bundle_dir
  SharedHelpers.default_bundle_dir
end

# File lib/bundler.rb, line 329
def default_gemfile
  SharedHelpers.default_gemfile
end

# File lib/bundler.rb, line 333
def default_lockfile
  SharedHelpers.default_lockfile
end

# File lib/bundler.rb, line 131
def definition(unlock = nil)
  @definition = nil if unlock
  @definition ||= begin
    configure
    Definition.build(default_gemfile, default_lockfile, unlock)
  end
end

# File lib/bundler.rb, line 121
def environment
  SharedHelpers.major_deprecation 2, "Bundler.environment has been removed in favor of Bundler.load"
  load
end

# File lib/bundler.rb, line 477
def feature_flag
  @feature_flag ||= FeatureFlag.new(VERSION)
end

# File lib/bundler.rb, line 139
def frozen_bundle?
  frozen = settings[:deployment]
  frozen ||= settings[:frozen] unless feature_flag.deployment_means_frozen?
  frozen
end

# File lib/bundler.rb, line 472
def git_present?
  return @git_present if defined?(@git_present)
  @git_present = Bundler.which("git") || Bundler.which("git.exe")
end

# File lib/bundler.rb, line 220
def home
  bundle_path.join("bundler")
end

# File lib/bundler.rb, line 224
def install_path
  home.join("gems")
end

# File lib/bundler.rb, line 117
def load
  @load ||= Runtime.new(root, definition)
end

# File lib/bundler.rb, line 441
def load_gemspec(file, validate = false)
  @gemspec_cache ||= {}
  key = File.expand_path(file)
  @gemspec_cache[key] ||= load_gemspec_uncached(file, validate)
  # Protect against caching side-effected gemspecs by returning a
  # new instance each time.
  @gemspec_cache[key].dup if @gemspec_cache[key]
end

# File lib/bundler.rb, line 450
def load_gemspec_uncached(file, validate = false)
  path = Pathname.new(file)
  contents = read_file(file)
  spec = if contents.start_with?("---") # YAML header
    eval_yaml_gemspec(path, contents)
  else
    # Eval the gemspec from its parent directory, because some gemspecs
    # depend on "./" relative paths.
    SharedHelpers.chdir(path.dirname.to_s) do
      eval_gemspec(path, contents)
    end
  end
  return unless spec
  spec.loaded_from = path.expand_path.to_s
  Bundler.rubygems.validate(spec) if validate
  spec
end

# File lib/bundler.rb, line 435
def load_marshal(data)
  Marshal.load(data)
rescue StandardError => e
  raise MarshalError, "#{e.class}: #{e.message}"
end

# File lib/bundler.rb, line 324
def local_platform
  return Gem::Platform::RUBY if settings[:force_ruby_platform]
  Gem::Platform.local
end

# File lib/bundler.rb, line 145
def locked_gems
  @locked_gems ||=
    if defined?(@definition) && @definition
      definition.locked_gems
    elsif Bundler.default_lockfile.file?
      lock = Bundler.read_file(Bundler.default_lockfile)
      LockfileParser.new(lock)
    end
end

# File lib/bundler.rb, line 382
def mkdir_p(path, options = {})
  if requires_sudo? && !options[:no_sudo]
    sudo "mkdir -p '#{path}'" unless File.exist?(path)
  else
    SharedHelpers.filesystem_access(path, :write) do |p|
      FileUtils.mkdir_p(p)
    end
  end
end

# File lib/bundler.rb, line 279
def original_env
  ORIGINAL_ENV.clone
end

# File lib/bundler.rb, line 429
def read_file(file)
  SharedHelpers.filesystem_access(file, :read) do
    File.open(file, "r:UTF-8", &:read)
  end
end

# File lib/bundler.rb, line 113
def require(*groups)
  setup(*groups).require(*groups)
end

# File lib/bundler/vendored_thor.rb, line 4
def self.require_thor_actions
  Kernel.send(:require, "bundler/vendor/thor/lib/thor/actions")
end

# File lib/bundler.rb, line 354
def requires_sudo?
  return @requires_sudo if defined?(@requires_sudo_ran)

  sudo_present = which "sudo" if settings.allow_sudo?

  if sudo_present
    # the bundle path and subdirectories need to be writable for RubyGems
    # to be able to unpack and install gems without exploding
    path = bundle_path
    path = path.parent until path.exist?

    # bins are written to a different location on OS X
    bin_dir = Pathname.new(Bundler.system_bindir)
    bin_dir = bin_dir.parent until bin_dir.exist?

    # if any directory is not writable, we need sudo
    files = [path, bin_dir] | Dir[bundle_path.join("build_info/*").to_s] | Dir[bundle_path.join("*").to_s]
    unwritable_files = files.reject {|f| File.writable?(f) }
    sudo_needed = !unwritable_files.empty?
    if sudo_needed
      Bundler.ui.warn "Following files may not be writable, so sudo is needed:\n  #{unwritable_files.map(&:to_s).sort.join("\n  ")}"
    end
  end

  @requires_sudo_ran = true
  @requires_sudo = settings.allow_sudo? && sudo_present && sudo_needed
end

# File lib/bundler.rb, line 481
def reset!
  reset_paths!
  Plugin.reset!
  reset_rubygems!
end

# File lib/bundler.rb, line 487
def reset_paths!
  @bin_path = nil
  @bundler_major_version = nil
  @bundle_path = nil
  @configured = nil
  @configured_bundle_path = nil
  @definition = nil
  @load = nil
  @locked_gems = nil
  @root = nil
  @settings = nil
  @setup = nil
  @user_home = nil
end

# File lib/bundler.rb, line 502
def reset_rubygems!
  return unless defined?(@rubygems) && @rubygems
  rubygems.undo_replacements
  rubygems.reset
  @rubygems = nil
end

# File lib/bundler.rb, line 260
    def rm_rf(path)
      FileUtils.remove_entry_secure(path) if path && File.exist?(path)
    rescue ArgumentError
      message = <<EOF
It is a security vulnerability to allow your home directory to be world-writable, and bundler can not continue.
You should probably consider fixing this issue by running `chmod o-w ~` on *nix.
Please refer to http://ruby-doc.org/stdlib-2.1.2/libdoc/fileutils/rdoc/FileUtils.html#method-c-remove_entry_secure for details.
EOF
      File.world_writable?(path) ? Bundler.ui.warn(message) : raise
      raise PathError, "Please fix the world-writable issue with your #{path} directory"
    end

# File lib/bundler.rb, line 232
def root
  @root ||= begin
              SharedHelpers.root
            rescue GemfileNotFound
              bundle_dir = default_bundle_dir
              raise GemfileNotFound, "Could not locate Gemfile or .bundle/ directory" unless bundle_dir
              Pathname.new(File.expand_path("..", bundle_dir))
            end
end

# File lib/bundler.rb, line 155
def ruby_scope
  "#{Bundler.rubygems.ruby_engine}/#{Bundler.rubygems.config_map[:ruby_version]}"
end

# File lib/bundler/rubygems_integration.rb, line 879
def self.rubygems
  @rubygems ||= if RubygemsIntegration.provides?(">= 2.1.0")
    RubygemsIntegration::MoreFuture.new
  elsif RubygemsIntegration.provides?(">= 1.99.99")
    RubygemsIntegration::Future.new
  elsif RubygemsIntegration.provides?(">= 1.8.20")
    RubygemsIntegration::MoreModern.new
  elsif RubygemsIntegration.provides?(">= 1.8.5")
    RubygemsIntegration::Modern.new
  elsif RubygemsIntegration.provides?(">= 1.8.0")
    RubygemsIntegration::AlmostModern.new
  elsif RubygemsIntegration.provides?(">= 1.7.0")
    RubygemsIntegration::Transitional.new
  elsif RubygemsIntegration.provides?(">= 1.4.0")
    RubygemsIntegration::Legacy.new
  else # RubyGems 1.3.6 and 1.3.7
    RubygemsIntegration::Ancient.new
  end
end

# File lib/bundler.rb, line 272
def settings
  @settings ||= Settings.new(app_config_path)
rescue GemfileNotFound
  @settings = Settings.new(Pathname.new(".bundle").expand_path)
end

# File lib/bundler.rb, line 97
def setup(*groups)
  # Return if all groups are already loaded
  return @setup if defined?(@setup) && @setup

  definition.validate_runtime!

  SharedHelpers.print_major_deprecations!

  if groups.empty?
    # Load all groups, but only once
    @setup = load.setup
  else
    load.setup(*groups)
  end
end

# File lib/bundler.rb, line 228
def specs_path
  bundle_path.join("specifications")
end

# File lib/bundler.rb, line 405
    def sudo(str)
      SUDO_MUTEX.synchronize do
        prompt = "\n\n" + <<-PROMPT.gsub(/^ {6}/, "").strip + " "
        Your user account isn't allowed to install to the system RubyGems.
        You can cancel this installation and run:

            bundle install --path vendor/bundle

        to install the gems into ./vendor/bundle/, or you can enter your password
        and install the bundled gems to RubyGems using sudo.

        Password:
        PROMPT

        unless @prompted_for_sudo ||= system(%(sudo -k -p "#{prompt}" true))
          raise SudoNotPermittedError,
            "Bundler requires sudo access to install at the moment. " \
            "Try installing again, granting Bundler sudo access when prompted, or installing into a different path."
        end

        `sudo -p "#{prompt}" #{str}`
      end
    end

# File lib/bundler.rb, line 341
def system_bindir
  # Gem.bindir doesn't always return the location that RubyGems will install
  # system binaries. If you put '-n foo' in your .gemrc, RubyGems will
  # install binstubs there instead. Unfortunately, RubyGems doesn't expose
  # that directory at all, so rather than parse .gemrc ourselves, we allow
  # the directory to be set as well, via `bundle config bindir foo`.
  Bundler.settings[:system_bindir] || Bundler.rubygems.gem_bindir
end

# File lib/bundler.rb, line 255
def tmp(name = Process.pid.to_s)
  Kernel.send(:require, "tmpdir")
  Pathname.new(Dir.mktmpdir(["bundler", name]))
end

# File lib/bundler.rb, line 183
def tmp_home_path(login, warning)
  login ||= "unknown"
  Kernel.send(:require, "tmpdir")
  path = Pathname.new(Dir.tmpdir).join("bundler", "home")
  SharedHelpers.filesystem_access(path) do |tmp_home_path|
    unless tmp_home_path.exist?
      tmp_home_path.mkpath
      tmp_home_path.chmod(0o777)
    end
    tmp_home_path.join(login).tap(&:mkpath)
  end
rescue RuntimeError => e
  raise e.exception("#{warning}\nBundler also failed to create a temporary home directory at `#{path}':\n#{e}")
end

# File lib/bundler.rb, line 69
def ui
  (defined?(@ui) && @ui) || (self.ui = UI::Silent.new)
end

# File lib/bundler.rb, line 73
def ui=(ui)
  Bundler.rubygems.ui = ui ? UI::RGProxy.new(ui) : nil
  @ui = ui
end

# File lib/bundler.rb, line 350
def use_system_gems?
  configured_bundle_path.use_system_gems?
end

# File lib/bundler.rb, line 198
def user_bundle_path(dir = "home")
  env_var, fallback = case dir
                      when "home"
                        ["BUNDLE_USER_HOME", Pathname.new(user_home).join(".bundle")]
                      when "cache"
                        ["BUNDLE_USER_CACHE", user_bundle_path.join("cache")]
                      when "config"
                        ["BUNDLE_USER_CONFIG", user_bundle_path.join("config")]
                      when "plugin"
                        ["BUNDLE_USER_PLUGIN", user_bundle_path.join("plugin")]
                      else
                        raise BundlerError, "Unknown user path requested: #{dir}"
  end
  # `fallback` will already be a Pathname, but Pathname.new() is
  # idempotent so it's OK
  Pathname.new(ENV.fetch(env_var, fallback))
end

# File lib/bundler.rb, line 216
def user_cache
  user_bundle_path("cache")
end

# File lib/bundler.rb, line 159
def user_home
  @user_home ||= begin
    home = Bundler.rubygems.user_home
    bundle_home = home ? File.join(home, ".bundle") : nil

    warning = if home.nil?
      "Your home directory is not set."
    elsif !File.directory?(home)
      "`#{home}` is not a directory."
    elsif !File.writable?(home) && (!File.directory?(bundle_home) || !File.writable?(bundle_home))
      "`#{home}` is not writable."
    end

    if warning
      Kernel.send(:require, "etc")
      user_home = tmp_home_path(Etc.getlogin, warning)
      Bundler.ui.warn "#{warning}\nBundler will use `#{user_home}' as your home directory temporarily.\n"
      user_home
    else
      Pathname.new(home)
    end
  end
end

# File lib/bundler.rb, line 392
def which(executable)
  if File.file?(executable) && File.executable?(executable)
    executable
  elsif paths = ENV["PATH"]
    quote = '"'.freeze
    paths.split(File::PATH_SEPARATOR).find do |path|
      path = path[1..-2] if path.start_with?(quote) && path.end_with?(quote)
      executable_path = File.expand_path(executable, path)
      return executable_path if File.file?(executable_path) && File.executable?(executable_path)
    end
  end
end

# File lib/bundler.rb, line 312
def with_clean_env
  with_env(clean_env) { yield }
end

# File lib/bundler/friendly_errors.rb, line 123
def self.with_friendly_errors
  yield
rescue SignalException
  raise
rescue Exception => e
  FriendlyErrors.log_error(e)
  exit FriendlyErrors.exit_status(e)
end

# File lib/bundler.rb, line 308
def with_original_env
  with_env(original_env) { yield }
end

# File lib/bundler.rb, line 553
def configure_gem_home
  Bundler::SharedHelpers.set_env "GEM_HOME", File.expand_path(bundle_path, root)
  Bundler.rubygems.clear_paths
end

# File lib/bundler.rb, line 533
def configure_gem_home_and_path
  configure_gem_path
  configure_gem_home
  bundle_path
end

# File lib/bundler.rb, line 539
def configure_gem_path(env = ENV)
  blank_home = env["GEM_HOME"].nil? || env["GEM_HOME"].empty?
  if !use_system_gems?
    # this needs to be empty string to cause
    # PathSupport.split_gem_path to only load up the
    # Bundler --path setting as the GEM_PATH.
    env["GEM_PATH"] = ""
  elsif blank_home
    possibles = [Bundler.rubygems.gem_dir, Bundler.rubygems.gem_path]
    paths = possibles.flatten.compact.uniq.reject(&:empty?)
    env["GEM_PATH"] = paths.join(File::PATH_SEPARATOR)
  end
end

# File lib/bundler.rb, line 521
def eval_gemspec(path, contents)
  eval(contents, TOPLEVEL_BINDING.dup, path.expand_path.to_s)
rescue ScriptError, StandardError => e
  msg = "There was an error while loading `#{path.basename}`: #{e.message}"

  if e.is_a?(LoadError) && RUBY_VERSION >= "1.9"
    msg += "\nDoes it try to require a relative path? That's been removed in Ruby 1.9"
  end

  raise GemspecError, Dsl::DSLError.new(msg, path, e.backtrace, contents)
end

# File lib/bundler.rb, line 511
def eval_yaml_gemspec(path, contents)
  Kernel.send(:require, "bundler/psyched_yaml")

  # If the YAML is invalid, Syck raises an ArgumentError, and Psych
  # raises a Psych::SyntaxError. See psyched_yaml.rb for more info.
  Gem::Specification.from_yaml(contents)
rescue YamlLibrarySyntaxError, ArgumentError, Gem::EndOfYAMLException, Gem::Exception
  eval_gemspec(path, contents)
end

# File lib/bundler/version.rb, line 12
def self.overwrite_loaded_gem_version
  begin
    require "rubygems"
  rescue LoadError
    return
  end
  return unless bundler_spec = Gem.loaded_specs["bundler"]
  return if bundler_spec.version == VERSION
  bundler_spec.version = Bundler::VERSION
end

# File lib/bundler.rb, line 559
def with_env(env)
  backup = ENV.to_hash
  ENV.replace(env)
  yield
ensure
  ENV.replace(backup)
end