module Bundler

def self.current_ruby
  @current_ruby ||= CurrentRuby.new
end

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

def self.require_thor_actions
  Kernel.send(:require, "bundler/vendor/thor/lib/thor/actions")
end

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

def self.with_friendly_errors
  yield
rescue Exception => e
  FriendlyErrors.log_error(e)
  exit FriendlyErrors.exit_status(e)
end

def app_cache(custom_path = nil)
  path = custom_path || root
  path.join(settings.app_cache_path)
end

def app_config_path
  if ENV["BUNDLE_APP_CONFIG"]
    Pathname.new(ENV["BUNDLE_APP_CONFIG"]).expand_path(root)
  else
    root.join(".bundle")
  end
end

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

def bundle_path
  @bundle_path ||= Pathname.new(settings.path).expand_path(root)
end

def cache
  bundle_path.join("cache/bundler")
end

def clean_env
  Bundler::SharedHelpers.major_deprecation("`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

def clean_exec(*args)
  with_clean_env { Kernel.exec(*args) }
end

def clean_system(*args)
  with_clean_env { Kernel.system(*args) }
end

def clear_gemspec_cache
  @gemspec_cache = {}
end

def configure
  @configured ||= configure_gem_home_and_path
end

def configure_gem_home
  # TODO: This mkdir_p is only needed for JRuby <= 1.5 and should go away (GH #602)
  begin
    FileUtils.mkdir_p bundle_path.to_s
  rescue
    nil
  end
  ENV["GEM_HOME"] = File.expand_path(bundle_path, root)
  Bundler.rubygems.clear_paths
end

def configure_gem_home_and_path
  configure_gem_path
  configure_gem_home
  bundle_path
end

def configure_gem_path(env = ENV, settings = self.settings)
  blank_home = env["GEM_HOME"].nil? || env["GEM_HOME"].empty?
  if settings[:disable_shared_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 || Bundler.rubygems.gem_dir != bundle_path.to_s
    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

def default_bundle_dir
  SharedHelpers.default_bundle_dir
end

def default_gemfile
  SharedHelpers.default_gemfile
end

def default_lockfile
  SharedHelpers.default_lockfile
end

def definition(unlock = nil)
  @definition = nil if unlock
  @definition ||= begin
    configure
    Definition.build(default_gemfile, default_lockfile, unlock)
  end
end

def environment
  SharedHelpers.major_deprecation "Bundler.environment has been removed in favor of Bundler.load"
  load
end

def eval_gemspec(path, contents)
  eval(contents, TOPLEVEL_BINDING, 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

def eval_yaml_gemspec(path, contents)
  # 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

def feature_flag
  @feature_flag ||= FeatureFlag.new(VERSION)
end

def git_present?
  return @git_present if defined?(@git_present)
  @git_present = Bundler.which("git") || Bundler.which("git.exe")
end

def home
  bundle_path.join("bundler")
end

def install_path
  home.join("gems")
end

def load
  @load ||= Runtime.new(root, definition)
end

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

def load_gemspec_uncached(file, validate = false)
  path = Pathname.new(file)
  contents = path.read
  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

def load_marshal(data)
  Marshal.load(data)
rescue => e
  raise MarshalError, "#{e.class}: #{e.message}"
end

def local_platform
  return Gem::Platform::RUBY if settings[:force_ruby_platform]
  Gem::Platform.local
end

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

def mkdir_p(path)
  if requires_sudo?
    sudo "mkdir -p '#{path}'" unless File.exist?(path)
  else
    SharedHelpers.filesystem_access(path, :write) do |p|
      FileUtils.mkdir_p(p)
    end
  end
end

def original_env
  ORIGINAL_ENV.clone
end

def read_file(file)
  File.open(file, "rb", &:read)
end

def require(*groups)
  setup(*groups).require(*groups)
end

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[path.join("build_info/*").to_s] | Dir[path.join("*").to_s]
    sudo_needed = files.any? {|f| !File.writable?(f) }
  end
  @requires_sudo_ran = true
  @requires_sudo = settings.allow_sudo? && sudo_present && sudo_needed
end

def reset!
  reset_paths!
  Plugin.reset!
  reset_rubygems!
end

def reset_paths!
  @root = nil
  @settings = nil
  @definition = nil
  @setup = nil
  @load = nil
  @locked_gems = nil
  @bundle_path = nil
  @bin_path = nil
  @user_home = nil
end

def reset_rubygems!
  return unless defined?(@rubygems) && @rubygems
  rubygems.undo_replacements
  rubygems.reset
  @rubygems = nil
end

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

def root
  @root ||= begin
              default_gemfile.dirname.expand_path
            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

def ruby_scope
  "#{Bundler.rubygems.ruby_engine}/#{Bundler.rubygems.config_map[:ruby_version]}"
end

def settings
  @settings ||= Settings.new(app_config_path)
rescue GemfileNotFound
  @settings = Settings.new(Pathname.new(".bundle").expand_path)
end

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

def specs_path
  bundle_path.join("specifications")
end

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

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

def tmp(name = Process.pid.to_s)
  Pathname.new(Dir.mktmpdir(["bundler", name]))
end

def tmp_home_path(login, warning)
  login ||= "unknown"
  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 => e
  raise e.exception("#{warning}\nBundler also failed to create a temporary home directory at `#{path}':\n#{e}")
end

def ui
  (defined?(@ui) && @ui) || (self.ui = UI::Silent.new)
end

def ui=(ui)
  Bundler.rubygems.ui = ui ? UI::RGProxy.new(ui) : nil
  @ui = ui
end

def user_bundle_path
  Pathname.new(user_home).join(".bundle")
end

def user_cache
  user_bundle_path.join("cache")
end

def user_home
  @user_home ||= begin
    home = Bundler.rubygems.user_home
    warning = if home.nil?
      "Your home directory is not set."
    elsif !File.directory?(home)
      "`#{home}` is not a directory."
    elsif !File.writable?(home)
      "`#{home}` is not writable."
    end
    if warning
      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

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

def with_clean_env
  with_env(clean_env) { yield }
end

def with_env(env)
  backup = ENV.to_hash
  ENV.replace(env)
  yield
ensure
  ENV.replace(backup)
end

def with_original_env
  with_env(original_env) { yield }
end