module Bundler

# File lib/bundler.rb, line 173
def app_cache
  root.join("vendor/cache")
end

# File lib/bundler.rb, line 167
def app_config_path
  ENV['BUNDLE_APP_CONFIG'] ?
    Pathname.new(ENV['BUNDLE_APP_CONFIG']).expand_path(root) :
    root.join('.bundle')
end

# File lib/bundler.rb, line 92
def bin_path
  @bin_path ||= begin
    path = settings[:bin] || "bin"
    path = Pathname.new(path).expand_path(root)
    FileUtils.mkdir_p(path)
    Pathname.new(path).expand_path
  end
end

# File lib/bundler.rb, line 88
def bundle_path
  @bundle_path ||= Pathname.new(settings.path).expand_path(root)
end

# File lib/bundler.rb, line 159
def cache
  bundle_path.join("cache/bundler")
end

# File lib/bundler.rb, line 208
def clean_exec(*args)
  with_clean_env { Kernel.exec(*args) }
end

# File lib/bundler.rb, line 204
def clean_system(*args)
  with_clean_env { Kernel.system(*args) }
end

# File lib/bundler.rb, line 80
def configure
  @configured ||= configure_gem_home_and_path
end

# File lib/bundler.rb, line 212
def default_gemfile
  SharedHelpers.default_gemfile
end

# File lib/bundler.rb, line 216
def default_lockfile
  SharedHelpers.default_lockfile
end

# File lib/bundler.rb, line 130
def definition(unlock = nil)
  @definition = nil if unlock
  @definition ||= begin
    configure
    upgrade_lockfile
    Definition.build(default_gemfile, default_lockfile, unlock)
  end
end

# File lib/bundler.rb, line 126
def environment
  Bundler::Environment.new(root, definition)
end

# File lib/bundler.rb, line 147
def home
  bundle_path.join("bundler")
end

# File lib/bundler.rb, line 151
def install_path
  home.join("gems")
end

# File lib/bundler.rb, line 122
def load
  @load ||= Runtime.new(root, definition)
end

# File lib/bundler.rb, line 270
def load_gemspec(file)
  path = Pathname.new(file)
  # Eval the gemspec from its parent directory
  Dir.chdir(path.dirname.to_s) do
    contents = File.read(path.basename.to_s)
    begin
      Gem::Specification.from_yaml(contents)
      # Raises ArgumentError if the file is not valid YAML
    rescue ArgumentError, SyntaxError, Gem::EndOfYAMLException, Gem::Exception
      begin
        eval(contents, TOPLEVEL_BINDING, path.expand_path.to_s)
      rescue LoadError => e
        original_line = e.backtrace.find { |line| line.include?(path.to_s) }
        msg  = "There was a LoadError while evaluating #{path.basename}:\n  #{e.message}"
        msg << " from\n  #{original_line}" if original_line
        msg << "\n"

        if RUBY_VERSION >= "1.9"
          msg << "\nDoes it try to require a relative path? That doesn't work in Ruby 1.9."
        end

        raise GemspecError, msg
      end
    end
  end
end

# File lib/bundler.rb, line 243
def mkdir_p(path)
  if requires_sudo?
    sudo "mkdir -p '#{path}'" unless File.exist?(path)
  else
    FileUtils.mkdir_p(path)
  end
end

# File lib/bundler.rb, line 266
def read_file(file)
  File.open(file, "rb") { |f| f.read }
end

# File lib/bundler.rb, line 118
def require(*groups)
  setup(*groups).require(*groups)
end

# File lib/bundler.rb, line 229
def requires_sudo?
  return @requires_sudo if defined?(@checked_for_sudo)

  path = bundle_path
  path = path.parent until path.exist?
  sudo_present = which "sudo"
  bin_dir = Pathname.new(Bundler.system_bindir)
  bin_dir = bin_dir.parent until bin_dir.exist?

  @checked_for_sudo = true
  sudo_gems = !File.writable?(path) || !File.writable?(bin_dir)
  @requires_sudo = settings.allow_sudo? && sudo_gems && sudo_present
end

# File lib/bundler.rb, line 163
def root
  default_gemfile.dirname.expand_path
end

# File lib/bundler.rb, line 139
def ruby_scope
  "#{Bundler.rubygems.ruby_engine}/#{Gem::ConfigMap[:ruby_version]}"
end

# File lib/bundler.rb, line 181
def settings
  @settings ||= Settings.new(app_config_path)
end

# File lib/bundler.rb, line 101
def setup(*groups)
  # Just return if all groups are already loaded
  return @setup if defined?(@setup)

  if groups.empty?
    # Load all groups, but only once
    @setup = load.setup
  else
    @completed_groups ||= []
    # Figure out which groups haven't been loaded yet
    unloaded = groups - @completed_groups
    # Record groups that are now loaded
    @completed_groups = groups
    unloaded.any? ? load.setup(*groups) : load
  end
end

# File lib/bundler.rb, line 155
def specs_path
  bundle_path.join("specifications")
end

# File lib/bundler.rb, line 262
def sudo(str)
  %xsudo -p 'Enter your password to install the bundled RubyGems to your system: ' #{str}`
end

# File lib/bundler.rb, line 220
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 177
def tmp
  user_bundle_path.join("tmp", Process.pid.to_s)
end

# File lib/bundler.rb, line 84
def ui
  @ui ||= UI.new
end

# File lib/bundler.rb, line 143
def user_bundle_path
  Pathname.new(Bundler.rubygems.user_home).join(".bundler")
end

# File lib/bundler.rb, line 251
def which(executable)
  if File.executable?(executable)
    executable
  else
    path = ENV['PATH'].split(File::PATH_SEPARATOR).find do |p|
      File.executable?(File.join(p, executable))
    end
    path && File.expand_path(executable, path)
  end
end

# File lib/bundler.rb, line 193
def with_clean_env
  with_original_env do
    ENV.delete_if { |k,_| k[0,7] == 'BUNDLE_' }
    if ENV.has_key? 'RUBYOPT'
      ENV['RUBYOPT'] = ENV['RUBYOPT'].sub '-rbundler/setup', ''
      ENV['RUBYOPT'] = ENV['RUBYOPT'].sub "-I#{File.expand_path('..', __FILE__)}", ''
    end
    yield
  end
end

# File lib/bundler.rb, line 185
def with_original_env
  bundled_env = ENV.to_hash
  ENV.replace(ORIGINAL_ENV)
  yield
ensure
  ENV.replace(bundled_env.to_hash)
end