/usr/lib/ruby/vendor_ruby/action_dispatch/routing/route_set.rb is in ruby-actionpack 2:4.2.6-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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require 'forwardable'
require 'active_support/concern'
require 'active_support/core_ext/object/to_query'
require 'active_support/core_ext/hash/slice'
require 'active_support/core_ext/module/remove_method'
require 'active_support/core_ext/array/extract_options'
require 'active_support/core_ext/string/filters'
require 'action_controller/metal/exceptions'
require 'action_dispatch/http/request'
require 'action_dispatch/routing/endpoint'
module ActionDispatch
module Routing
# :stopdoc:
class RouteSet
# Since the router holds references to many parts of the system
# like engines, controllers and the application itself, inspecting
# the route set can actually be really slow, therefore we default
# alias inspect to to_s.
alias inspect to_s
mattr_accessor :relative_url_root
class Dispatcher < Routing::Endpoint
def initialize(defaults)
@defaults = defaults
end
def dispatcher?; true; end
def serve(req)
req.check_path_parameters!
params = req.path_parameters
prepare_params!(params)
# Just raise undefined constant errors if a controller was specified as default.
unless controller = controller(params, @defaults.key?(:controller))
return [404, {'X-Cascade' => 'pass'}, []]
end
dispatch(controller, params[:action], req.env)
end
def prepare_params!(params)
normalize_controller!(params)
merge_default_action!(params)
end
# If this is a default_controller (i.e. a controller specified by the user)
# we should raise an error in case it's not found, because it usually means
# a user error. However, if the controller was retrieved through a dynamic
# segment, as in :controller(/:action), we should simply return nil and
# delegate the control back to Rack cascade. Besides, if this is not a default
# controller, it means we should respect the @scope[:module] parameter.
def controller(params, default_controller=true)
if params && params.key?(:controller)
controller_param = params[:controller]
controller_reference(controller_param)
end
rescue NameError => e
raise ActionController::RoutingError, e.message, e.backtrace if default_controller
end
private
def controller_reference(controller_param)
const_name = "#{controller_param.camelize}Controller"
ActiveSupport::Dependencies.constantize(const_name)
end
def dispatch(controller, action, env)
controller.action(action).call(env)
end
def normalize_controller!(params)
params[:controller] = params[:controller].underscore if params.key?(:controller)
end
def merge_default_action!(params)
params[:action] ||= 'index'
end
end
# A NamedRouteCollection instance is a collection of named routes, and also
# maintains an anonymous module that can be used to install helpers for the
# named routes.
class NamedRouteCollection
include Enumerable
attr_reader :routes, :url_helpers_module
def initialize
@routes = {}
@path_helpers = Set.new
@url_helpers = Set.new
@url_helpers_module = Module.new
@path_helpers_module = Module.new
end
def route_defined?(name)
key = name.to_sym
@path_helpers.include?(key) || @url_helpers.include?(key)
end
def helpers
ActiveSupport::Deprecation.warn(<<-MSG.squish)
`named_routes.helpers` is deprecated, please use `route_defined?(route_name)`
to see if a named route was defined.
MSG
@path_helpers + @url_helpers
end
def helper_names
@path_helpers.map(&:to_s) + @url_helpers.map(&:to_s)
end
def clear!
@path_helpers.each do |helper|
@path_helpers_module.send :undef_method, helper
end
@url_helpers.each do |helper|
@url_helpers_module.send :undef_method, helper
end
@routes.clear
@path_helpers.clear
@url_helpers.clear
end
def add(name, route)
key = name.to_sym
path_name = :"#{name}_path"
url_name = :"#{name}_url"
if routes.key? key
@path_helpers_module.send :undef_method, path_name
@url_helpers_module.send :undef_method, url_name
end
routes[key] = route
define_url_helper @path_helpers_module, route, path_name, route.defaults, name, LEGACY
define_url_helper @url_helpers_module, route, url_name, route.defaults, name, UNKNOWN
@path_helpers << path_name
@url_helpers << url_name
end
def get(name)
routes[name.to_sym]
end
def key?(name)
routes.key? name.to_sym
end
alias []= add
alias [] get
alias clear clear!
def each
routes.each { |name, route| yield name, route }
self
end
def names
routes.keys
end
def length
routes.length
end
def path_helpers_module(warn = false)
if warn
mod = @path_helpers_module
helpers = @path_helpers
Module.new do
include mod
helpers.each do |meth|
define_method(meth) do |*args, &block|
ActiveSupport::Deprecation.warn("The method `#{meth}` cannot be used here as a full URL is required. Use `#{meth.to_s.sub(/_path$/, '_url')}` instead")
super(*args, &block)
end
end
end
else
@path_helpers_module
end
end
class UrlHelper
def self.create(route, options, route_name, url_strategy)
if optimize_helper?(route)
OptimizedUrlHelper.new(route, options, route_name, url_strategy)
else
new route, options, route_name, url_strategy
end
end
def self.optimize_helper?(route)
!route.glob? && route.path.requirements.empty?
end
attr_reader :url_strategy, :route_name
class OptimizedUrlHelper < UrlHelper
attr_reader :arg_size
def initialize(route, options, route_name, url_strategy)
super
@required_parts = @route.required_parts
@arg_size = @required_parts.size
end
def call(t, args, inner_options)
if args.size == arg_size && !inner_options && optimize_routes_generation?(t)
options = t.url_options.merge @options
options[:path] = optimized_helper(args)
url_strategy.call options
else
super
end
end
private
def optimized_helper(args)
params = parameterize_args(args)
missing_keys = missing_keys(params)
unless missing_keys.empty?
raise_generation_error(params, missing_keys)
end
@route.format params
end
def optimize_routes_generation?(t)
t.send(:optimize_routes_generation?)
end
def parameterize_args(args)
params = {}
@required_parts.zip(args.map(&:to_param)) { |k,v| params[k] = v }
params
end
def missing_keys(args)
args.select{ |part, arg| arg.nil? || arg.empty? }.keys
end
def raise_generation_error(args, missing_keys)
constraints = Hash[@route.requirements.merge(args).sort_by{|k,v| k.to_s}]
message = "No route matches #{constraints.inspect}"
message << " missing required keys: #{missing_keys.sort.inspect}"
raise ActionController::UrlGenerationError, message
end
end
def initialize(route, options, route_name, url_strategy)
@options = options
@segment_keys = route.segment_keys.uniq
@route = route
@url_strategy = url_strategy
@route_name = route_name
end
def call(t, args, inner_options)
controller_options = t.url_options
options = controller_options.merge @options
hash = handle_positional_args(controller_options,
deprecate_string_options(inner_options) || {},
args,
options,
@segment_keys)
t._routes.url_for(hash, route_name, url_strategy)
end
def handle_positional_args(controller_options, inner_options, args, result, path_params)
if args.size > 0
# take format into account
if path_params.include?(:format)
path_params_size = path_params.size - 1
else
path_params_size = path_params.size
end
if args.size < path_params_size
path_params -= controller_options.keys
path_params -= result.keys
end
path_params.each { |param|
value = inner_options.fetch(param) { args.shift }
unless param == :format && value.nil?
result[param] = value
end
}
end
result.merge!(inner_options)
end
DEPRECATED_STRING_OPTIONS = %w[controller action]
def deprecate_string_options(options)
options ||= {}
deprecated_string_options = options.keys & DEPRECATED_STRING_OPTIONS
if deprecated_string_options.any?
msg = "Calling URL helpers with string keys #{deprecated_string_options.join(", ")} is deprecated. Use symbols instead."
ActiveSupport::Deprecation.warn(msg)
deprecated_string_options.each do |option|
value = options.delete(option)
options[option.to_sym] = value
end
end
options
end
end
private
# Create a url helper allowing ordered parameters to be associated
# with corresponding dynamic segments, so you can do:
#
# foo_url(bar, baz, bang)
#
# Instead of:
#
# foo_url(bar: bar, baz: baz, bang: bang)
#
# Also allow options hash, so you can do:
#
# foo_url(bar, baz, bang, sort_by: 'baz')
#
def define_url_helper(mod, route, name, opts, route_key, url_strategy)
helper = UrlHelper.create(route, opts, route_key, url_strategy)
mod.module_eval do
define_method(name) do |*args|
options = nil
options = args.pop if args.last.is_a? Hash
helper.call self, args, options
end
end
end
end
# strategy for building urls to send to the client
PATH = ->(options) { ActionDispatch::Http::URL.path_for(options) }
FULL = ->(options) { ActionDispatch::Http::URL.full_url_for(options) }
UNKNOWN = ->(options) { ActionDispatch::Http::URL.url_for(options) }
LEGACY = ->(options) {
if options.key?(:only_path)
if options[:only_path]
ActiveSupport::Deprecation.warn(<<-MSG.squish)
You are calling a `*_path` helper with the `only_path` option
explicitly set to `true`. This option will stop working on
path helpers in Rails 5. Simply remove the `only_path: true`
argument from your call as it is redundant when applied to a
path helper.
MSG
PATH.call(options)
else
ActiveSupport::Deprecation.warn(<<-MSG.squish)
You are calling a `*_path` helper with the `only_path` option
explicitly set to `false`. This option will stop working on
path helpers in Rails 5. Use the corresponding `*_url` helper
instead.
MSG
FULL.call(options)
end
else
PATH.call(options)
end
}
attr_accessor :formatter, :set, :named_routes, :default_scope, :router
attr_accessor :disable_clear_and_finalize, :resources_path_names
attr_accessor :default_url_options, :request_class
alias :routes :set
def self.default_resources_path_names
{ :new => 'new', :edit => 'edit' }
end
def initialize(request_class = ActionDispatch::Request)
self.named_routes = NamedRouteCollection.new
self.resources_path_names = self.class.default_resources_path_names
self.default_url_options = {}
self.request_class = request_class
@append = []
@prepend = []
@disable_clear_and_finalize = false
@finalized = false
@set = Journey::Routes.new
@router = Journey::Router.new @set
@formatter = Journey::Formatter.new @set
end
def draw(&block)
clear! unless @disable_clear_and_finalize
eval_block(block)
finalize! unless @disable_clear_and_finalize
nil
end
def append(&block)
@append << block
end
def prepend(&block)
@prepend << block
end
def eval_block(block)
if block.arity == 1
raise "You are using the old router DSL which has been removed in Rails 3.1. " <<
"Please check how to update your routes file at: http://www.engineyard.com/blog/2010/the-lowdown-on-routes-in-rails-3/"
end
mapper = Mapper.new(self)
if default_scope
mapper.with_default_scope(default_scope, &block)
else
mapper.instance_exec(&block)
end
end
private :eval_block
def finalize!
return if @finalized
@append.each { |blk| eval_block(blk) }
@finalized = true
end
def clear!
@finalized = false
named_routes.clear
set.clear
formatter.clear
@prepend.each { |blk| eval_block(blk) }
end
def dispatcher(defaults)
Routing::RouteSet::Dispatcher.new(defaults)
end
module MountedHelpers
extend ActiveSupport::Concern
include UrlFor
end
# Contains all the mounted helpers across different
# engines and the `main_app` helper for the application.
# You can include this in your classes if you want to
# access routes for other engines.
def mounted_helpers
MountedHelpers
end
def define_mounted_helper(name)
return if MountedHelpers.method_defined?(name)
routes = self
helpers = routes.url_helpers
MountedHelpers.class_eval do
define_method "_#{name}" do
RoutesProxy.new(routes, _routes_context, helpers)
end
end
MountedHelpers.class_eval(<<-RUBY, __FILE__, __LINE__ + 1)
def #{name}
@_#{name} ||= _#{name}
end
RUBY
end
def url_helpers(supports_path = true)
routes = self
Module.new do
extend ActiveSupport::Concern
include UrlFor
# Define url_for in the singleton level so one can do:
# Rails.application.routes.url_helpers.url_for(args)
@_routes = routes
class << self
delegate :url_for, :optimize_routes_generation?, to: '@_routes'
attr_reader :_routes
def url_options; {}; end
end
url_helpers = routes.named_routes.url_helpers_module
# Make named_routes available in the module singleton
# as well, so one can do:
# Rails.application.routes.url_helpers.posts_path
extend url_helpers
# Any class that includes this module will get all
# named routes...
include url_helpers
if supports_path
path_helpers = routes.named_routes.path_helpers_module
else
path_helpers = routes.named_routes.path_helpers_module(true)
end
include path_helpers
extend path_helpers
# plus a singleton class method called _routes ...
included do
singleton_class.send(:redefine_method, :_routes) { routes }
end
# And an instance method _routes. Note that
# UrlFor (included in this module) add extra
# conveniences for working with @_routes.
define_method(:_routes) { @_routes || routes }
define_method(:_generate_paths_by_default) do
supports_path
end
private :_generate_paths_by_default
end
end
def empty?
routes.empty?
end
def add_route(app, conditions = {}, requirements = {}, defaults = {}, name = nil, anchor = true)
raise ArgumentError, "Invalid route name: '#{name}'" unless name.blank? || name.to_s.match(/^[_a-z]\w*$/i)
if name && named_routes[name]
raise ArgumentError, "Invalid route name, already in use: '#{name}' \n" \
"You may have defined two routes with the same name using the `:as` option, or " \
"you may be overriding a route already defined by a resource with the same naming. " \
"For the latter, you can restrict the routes created with `resources` as explained here: \n" \
"http://guides.rubyonrails.org/routing.html#restricting-the-routes-created"
end
path = conditions.delete :path_info
ast = conditions.delete :parsed_path_info
path = build_path(path, ast, requirements, anchor)
conditions = build_conditions(conditions, path.names.map { |x| x.to_sym })
route = @set.add_route(app, path, conditions, defaults, name)
named_routes[name] = route if name
route
end
def build_path(path, ast, requirements, anchor)
strexp = Journey::Router::Strexp.new(
ast,
path,
requirements,
SEPARATORS,
anchor)
pattern = Journey::Path::Pattern.new(strexp)
builder = Journey::GTG::Builder.new pattern.spec
# Get all the symbol nodes followed by literals that are not the
# dummy node.
symbols = pattern.spec.grep(Journey::Nodes::Symbol).find_all { |n|
builder.followpos(n).first.literal?
}
# Get all the symbol nodes preceded by literals.
symbols.concat pattern.spec.find_all(&:literal?).map { |n|
builder.followpos(n).first
}.find_all(&:symbol?)
symbols.each { |x|
x.regexp = /(?:#{Regexp.union(x.regexp, '-')})+/
}
pattern
end
private :build_path
def build_conditions(current_conditions, path_values)
conditions = current_conditions.dup
# Rack-Mount requires that :request_method be a regular expression.
# :request_method represents the HTTP verb that matches this route.
#
# Here we munge values before they get sent on to rack-mount.
verbs = conditions[:request_method] || []
unless verbs.empty?
conditions[:request_method] = %r[^#{verbs.join('|')}$]
end
conditions.keep_if do |k, _|
k == :action || k == :controller || k == :required_defaults ||
@request_class.public_method_defined?(k) || path_values.include?(k)
end
end
private :build_conditions
class Generator
PARAMETERIZE = lambda do |name, value|
if name == :controller
value
elsif value.is_a?(Array)
value.map { |v| v.to_param }.join('/')
elsif param = value.to_param
param
end
end
attr_reader :options, :recall, :set, :named_route
def initialize(named_route, options, recall, set)
@named_route = named_route
@options = options.dup
@recall = recall.dup
@set = set
normalize_recall!
normalize_options!
normalize_controller_action_id!
use_relative_controller!
normalize_controller!
normalize_action!
end
def controller
@options[:controller]
end
def current_controller
@recall[:controller]
end
def use_recall_for(key)
if @recall[key] && (!@options.key?(key) || @options[key] == @recall[key])
if !named_route_exists? || segment_keys.include?(key)
@options[key] = @recall.delete(key)
end
end
end
# Set 'index' as default action for recall
def normalize_recall!
@recall[:action] ||= 'index'
end
def normalize_options!
# If an explicit :controller was given, always make :action explicit
# too, so that action expiry works as expected for things like
#
# generate({controller: 'content'}, {controller: 'content', action: 'show'})
#
# (the above is from the unit tests). In the above case, because the
# controller was explicitly given, but no action, the action is implied to
# be "index", not the recalled action of "show".
if options[:controller]
options[:action] ||= 'index'
options[:controller] = options[:controller].to_s
end
if options.key?(:action)
options[:action] = (options[:action] || 'index').to_s
end
end
# This pulls :controller, :action, and :id out of the recall.
# The recall key is only used if there is no key in the options
# or if the key in the options is identical. If any of
# :controller, :action or :id is not found, don't pull any
# more keys from the recall.
def normalize_controller_action_id!
use_recall_for(:controller) or return
use_recall_for(:action) or return
use_recall_for(:id)
end
# if the current controller is "foo/bar/baz" and controller: "baz/bat"
# is specified, the controller becomes "foo/baz/bat"
def use_relative_controller!
if !named_route && different_controller? && !controller.start_with?("/")
old_parts = current_controller.split('/')
size = controller.count("/") + 1
parts = old_parts[0...-size] << controller
@options[:controller] = parts.join("/")
end
end
# Remove leading slashes from controllers
def normalize_controller!
@options[:controller] = controller.sub(%r{^/}, '') if controller
end
# Move 'index' action from options to recall
def normalize_action!
if @options[:action] == 'index'
@recall[:action] = @options.delete(:action)
end
end
# Generates a path from routes, returns [path, params].
# If no route is generated the formatter will raise ActionController::UrlGenerationError
def generate
@set.formatter.generate(named_route, options, recall, PARAMETERIZE)
end
def different_controller?
return false unless current_controller
controller.to_param != current_controller.to_param
end
private
def named_route_exists?
named_route && set.named_routes[named_route]
end
def segment_keys
set.named_routes[named_route].segment_keys
end
end
# Generate the path indicated by the arguments, and return an array of
# the keys that were not used to generate it.
def extra_keys(options, recall={})
generate_extras(options, recall).last
end
def generate_extras(options, recall={})
route_key = options.delete :use_route
path, params = generate(route_key, options, recall)
return path, params.keys
end
def generate(route_key, options, recall = {})
Generator.new(route_key, options, recall, self).generate
end
private :generate
RESERVED_OPTIONS = [:host, :protocol, :port, :subdomain, :domain, :tld_length,
:trailing_slash, :anchor, :params, :only_path, :script_name,
:original_script_name, :relative_url_root]
def optimize_routes_generation?
default_url_options.empty?
end
def find_script_name(options)
options.delete(:script_name) || find_relative_url_root(options) || ''
end
def find_relative_url_root(options)
options.delete(:relative_url_root) || relative_url_root
end
def path_for(options, route_name = nil)
url_for(options, route_name, PATH)
end
# The +options+ argument must be a hash whose keys are *symbols*.
def url_for(options, route_name = nil, url_strategy = UNKNOWN)
options = default_url_options.merge options
user = password = nil
if options[:user] && options[:password]
user = options.delete :user
password = options.delete :password
end
recall = options.delete(:_recall) { {} }
original_script_name = options.delete(:original_script_name)
script_name = find_script_name options
if original_script_name
script_name = original_script_name + script_name
end
path_options = options.dup
RESERVED_OPTIONS.each { |ro| path_options.delete ro }
path, params = generate(route_name, path_options, recall)
if options.key? :params
params.merge! options[:params]
end
options[:path] = path
options[:script_name] = script_name
options[:params] = params
options[:user] = user
options[:password] = password
url_strategy.call options
end
def call(env)
req = request_class.new(env)
req.path_info = Journey::Router::Utils.normalize_path(req.path_info)
@router.serve(req)
end
def recognize_path(path, environment = {})
method = (environment[:method] || "GET").to_s.upcase
path = Journey::Router::Utils.normalize_path(path) unless path =~ %r{://}
extras = environment[:extras] || {}
begin
env = Rack::MockRequest.env_for(path, {:method => method})
rescue URI::InvalidURIError => e
raise ActionController::RoutingError, e.message
end
req = request_class.new(env)
@router.recognize(req) do |route, params|
params.merge!(extras)
params.each do |key, value|
if value.is_a?(String)
value = value.dup.force_encoding(Encoding::BINARY)
params[key] = URI.parser.unescape(value)
end
end
old_params = req.path_parameters
req.path_parameters = old_params.merge params
app = route.app
if app.matches?(req) && app.dispatcher?
dispatcher = app.app
if dispatcher.controller(params, false)
dispatcher.prepare_params!(params)
return params
else
raise ActionController::RoutingError, "A route matches #{path.inspect}, but references missing controller: #{params[:controller].camelize}Controller"
end
end
end
raise ActionController::RoutingError, "No route matches #{path.inspect}"
end
end
# :startdoc:
end
end
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