Checkout of Instiki Trunk 1/21/2007.
This commit is contained in:
Jacques Distler
commit
69b62b6f33
1138 changed files with 139586 additions and 0 deletions
716
vendor/rails/actionpack/lib/action_controller/routing.rb
vendored
Normal file
716
vendor/rails/actionpack/lib/action_controller/routing.rb
vendored
Normal file
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@ -0,0 +1,716 @@
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module ActionController
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module Routing #:nodoc:
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class << self
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def expiry_hash(options, recall)
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k = v = nil
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expire_on = {}
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options.each {|k, v| expire_on[k] = ((rcv = recall[k]) && (rcv != v))}
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expire_on
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end
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def extract_parameter_value(parameter) #:nodoc:
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CGI.escape((parameter.respond_to?(:to_param) ? parameter.to_param : parameter).to_s)
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end
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def controller_relative_to(controller, previous)
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if controller.nil? then previous
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elsif controller[0] == ?/ then controller[1..-1]
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elsif %r{^(.*)/} =~ previous then "#{$1}/#{controller}"
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else controller
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end
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end
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def treat_hash(hash, keys_to_delete = [])
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k = v = nil
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hash.each do |k, v|
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if v then hash[k] = (v.respond_to? :to_param) ? v.to_param.to_s : v.to_s
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else
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hash.delete k
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keys_to_delete << k
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end
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end
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hash
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end
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def test_condition(expression, condition)
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case condition
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when String then "(#{expression} == #{condition.inspect})"
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when Regexp then
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condition = Regexp.new("^#{condition.source}$") unless /^\^.*\$$/ =~ condition.source
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"(#{condition.inspect} =~ #{expression})"
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when Array then
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conds = condition.collect do |condition|
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cond = test_condition(expression, condition)
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(cond[0, 1] == '(' && cond[-1, 1] == ')') ? cond : "(#{cond})"
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end
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"(#{conds.join(' || ')})"
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when true then expression
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when nil then "! #{expression}"
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else
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raise ArgumentError, "Valid criteria are strings, regular expressions, true, or nil"
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end
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end
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end
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class Component #:nodoc:
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def dynamic?() false end
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def optional?() false end
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def key() nil end
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def self.new(string, *args)
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return super(string, *args) unless self == Component
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case string
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when ':controller' then ControllerComponent.new(:controller, *args)
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when /^:(\w+)$/ then DynamicComponent.new($1, *args)
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when /^\*(\w+)$/ then PathComponent.new($1, *args)
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else StaticComponent.new(string, *args)
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end
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end
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end
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class StaticComponent < Component #:nodoc:
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attr_reader :value
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def initialize(value)
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@value = value
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end
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def write_recognition(g)
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g.if_next_matches(value) do |gp|
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gp.move_forward {|gpp| gpp.continue}
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end
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end
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def write_generation(g)
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g.add_segment(value) {|gp| gp.continue }
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end
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end
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class DynamicComponent < Component #:nodoc:
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attr_reader :key, :default
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attr_accessor :condition
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def dynamic?() true end
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def optional?() @optional end
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def default=(default)
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@optional = true
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@default = default
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end
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def initialize(key, options = {})
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@key = key.to_sym
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@optional = false
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default, @condition = options[:default], options[:condition]
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self.default = default if options.key?(:default)
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end
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def default_check(g)
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presence = "#{g.hash_value(key, !! default)}"
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if default
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"!(#{presence} && #{g.hash_value(key, false)} != #{default.to_s.inspect})"
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else
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"! #{presence}"
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end
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end
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def write_generation(g)
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wrote_dropout = write_dropout_generation(g)
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write_continue_generation(g, wrote_dropout)
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end
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def write_dropout_generation(g)
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return false unless optional? && g.after.all? {|c| c.optional?}
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check = [default_check(g)]
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gp = g.dup # Use another generator to write the conditions after the first &&
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# We do this to ensure that the generator will not assume x_value is set. It will
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# not be set if it follows a false condition -- for example, false && (x = 2)
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check += gp.after.map {|c| c.default_check gp}
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gp.if(check.join(' && ')) { gp.finish } # If this condition is met, we stop here
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true
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end
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def write_continue_generation(g, use_else)
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test = Routing.test_condition(g.hash_value(key, true, default), condition || true)
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check = (use_else && condition.nil? && default) ? [:else] : [use_else ? :elsif : :if, test]
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g.send(*check) do |gp|
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gp.expire_for_keys(key) unless gp.after.empty?
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add_segments_to(gp) {|gpp| gpp.continue}
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end
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end
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def add_segments_to(g)
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g.add_segment(%(\#{CGI.escape(#{g.hash_value(key, true, default)})})) {|gp| yield gp}
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end
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def recognition_check(g)
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test_type = [true, nil].include?(condition) ? :presence : :constraint
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prefix = condition.is_a?(Regexp) ? "#{g.next_segment(true)} && " : ''
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check = prefix + Routing.test_condition(g.next_segment(true), condition || true)
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g.if(check) {|gp| yield gp, test_type}
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end
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def write_recognition(g)
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test_type = nil
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recognition_check(g) do |gp, test_type|
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assign_result(gp) {|gpp| gpp.continue}
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end
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if optional? && g.after.all? {|c| c.optional?}
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call = (test_type == :presence) ? [:else] : [:elsif, "! #{g.next_segment(true)}"]
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g.send(*call) do |gp|
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assign_default(gp)
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gp.after.each {|c| c.assign_default(gp)}
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gp.finish(false)
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end
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end
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end
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def assign_result(g, with_default = false)
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g.result key, "CGI.unescape(#{g.next_segment(true, with_default ? default : nil)})"
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g.move_forward {|gp| yield gp}
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end
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def assign_default(g)
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g.constant_result key, default unless default.nil?
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end
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end
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class ControllerComponent < DynamicComponent #:nodoc:
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def key() :controller end
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def add_segments_to(g)
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g.add_segment(%(\#{#{g.hash_value(key, true, default)}})) {|gp| yield gp}
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end
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def recognition_check(g)
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g << "controller_result = ::ActionController::Routing::ControllerComponent.traverse_to_controller(#{g.path_name}, #{g.index_name})"
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g.if('controller_result') do |gp|
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gp << 'controller_value, segments_to_controller = controller_result'
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if condition
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gp << "controller_path = #{gp.path_name}[#{gp.index_name},segments_to_controller].join('/')"
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gp.if(Routing.test_condition("controller_path", condition)) do |gpp|
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gpp.move_forward('segments_to_controller') {|gppp| yield gppp, :constraint}
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end
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else
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gp.move_forward('segments_to_controller') {|gpp| yield gpp, :constraint}
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end
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end
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end
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def assign_result(g)
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g.result key, 'controller_value'
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yield g
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end
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def assign_default(g)
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ControllerComponent.assign_controller(g, default)
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end
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class << self
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def assign_controller(g, controller)
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expr = "::#{controller.split('/').collect {|c| c.camelize}.join('::')}Controller"
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g.result :controller, expr, true
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end
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def traverse_to_controller(segments, start_at = 0)
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mod = ::Object
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length = segments.length
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index = start_at
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mod_name = controller_name = segment = nil
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while index < length
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return nil unless /\A[A-Za-z][A-Za-z\d_]*\Z/ =~ (segment = segments[index])
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index += 1
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mod_name = segment.camelize
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controller_name = "#{mod_name}Controller"
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path_suffix = File.join(segments[start_at..(index - 1)])
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next_mod = nil
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# If the controller is already present, or if we load it, return it.
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if mod.const_defined?(controller_name) || attempt_load(mod, controller_name, path_suffix + "_controller") == :defined
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controller = mod.const_get(controller_name)
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return nil unless controller.is_a?(Class) && controller.ancestors.include?(ActionController::Base) # it's not really a controller?
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return [controller, (index - start_at)]
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end
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# No controller? Look for the module
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if mod.const_defined? mod_name
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next_mod = mod.send(:const_get, mod_name)
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next_mod = nil unless next_mod.is_a?(Module)
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else
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# Try to load a file that defines the module we want.
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case attempt_load(mod, mod_name, path_suffix)
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when :defined then next_mod = mod.const_get mod_name
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when :dir then # We didn't find a file, but there's a dir.
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next_mod = Module.new # So create a module for the directory
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mod.send :const_set, mod_name, next_mod
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else
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return nil
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end
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end
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mod = next_mod
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return nil unless mod && mod.is_a?(Module)
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end
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nil
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end
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protected
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def safe_load_paths #:nodoc:
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if defined?(RAILS_ROOT)
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$LOAD_PATH.select do |base|
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base = File.expand_path(base)
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extended_root = File.expand_path(RAILS_ROOT)
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# Exclude all paths that are not nested within app, lib, or components.
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base.match(/\A#{Regexp.escape(extended_root)}\/*(app|lib|components)\/[a-z]/) || base =~ %r{rails-[\d.]+/builtin}
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end
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else
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$LOAD_PATH
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end
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end
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def attempt_load(mod, const_name, path)
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has_dir = false
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safe_load_paths.each do |load_path|
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full_path = File.join(load_path, path)
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file_path = full_path + '.rb'
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if File.file?(file_path) # Found a .rb file? Load it up
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require_dependency(file_path)
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return :defined if mod.const_defined? const_name
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else
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has_dir ||= File.directory?(full_path)
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end
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end
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return (has_dir ? :dir : nil)
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end
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end
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end
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class PathComponent < DynamicComponent #:nodoc:
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def optional?() true end
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def default() [] end
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def condition() nil end
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def default=(value)
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raise RoutingError, "All path components have an implicit default of []" unless value == []
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end
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def write_generation(g)
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raise RoutingError, 'Path components must occur last' unless g.after.empty?
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g.if("#{g.hash_value(key, true)} && ! #{g.hash_value(key, true)}.empty?") do
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g << "#{g.hash_value(key, true)} = #{g.hash_value(key, true)}.join('/') unless #{g.hash_value(key, true)}.is_a?(String)"
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g.add_segment("\#{CGI.escape_skipping_slashes(#{g.hash_value(key, true)})}") {|gp| gp.finish }
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end
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g.else { g.finish }
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end
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def write_recognition(g)
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raise RoutingError, "Path components must occur last" unless g.after.empty?
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start = g.index_name
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start = "(#{start})" unless /^\w+$/ =~ start
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value_expr = "#{g.path_name}[#{start}..-1] || []"
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g.result key, "ActionController::Routing::PathComponent::Result.new_escaped(#{value_expr})"
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g.finish(false)
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end
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class Result < ::Array #:nodoc:
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def to_s() join '/' end
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def self.new_escaped(strings)
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new strings.collect {|str| CGI.unescape str}
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end
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end
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end
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class Route #:nodoc:
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attr_accessor :components, :known
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attr_reader :path, :options, :keys, :defaults
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def initialize(path, options = {})
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@path, @options = path, options
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initialize_components path
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defaults, conditions = initialize_hashes options.dup
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@defaults = defaults.dup
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configure_components(defaults, conditions)
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add_default_requirements
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initialize_keys
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end
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def inspect
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"<#{self.class} #{path.inspect}, #{options.inspect[1..-1]}>"
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end
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def write_generation(generator = CodeGeneration::GenerationGenerator.new)
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generator.before, generator.current, generator.after = [], components.first, (components[1..-1] || [])
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if known.empty? then generator.go
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else
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# Alter the conditions to allow :action => 'index' to also catch :action => nil
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altered_known = known.collect do |k, v|
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if k == :action && v== 'index' then [k, [nil, 'index']]
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else [k, v]
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end
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end
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generator.if(generator.check_conditions(altered_known)) {|gp| gp.go }
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end
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generator
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end
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def write_recognition(generator = CodeGeneration::RecognitionGenerator.new)
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g = generator.dup
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g.share_locals_with generator
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g.before, g.current, g.after = [], components.first, (components[1..-1] || [])
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known.each do |key, value|
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if key == :controller then ControllerComponent.assign_controller(g, value)
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else g.constant_result(key, value)
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end
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end
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g.go
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generator
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||||
end
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||||
|
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def initialize_keys
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@keys = (components.collect {|c| c.key} + known.keys).compact
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||||
@keys.freeze
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end
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||||
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||||
def extra_keys(options)
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options.keys - @keys
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end
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||||
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def matches_controller?(controller)
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if known[:controller] then known[:controller] == controller
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else
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c = components.find {|c| c.key == :controller}
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||||
return false unless c
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return c.condition.nil? || eval(Routing.test_condition('controller', c.condition))
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||||
end
|
||||
end
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||||
|
||||
protected
|
||||
def initialize_components(path)
|
||||
path = path.split('/') if path.is_a? String
|
||||
path.shift if path.first.blank?
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||||
self.components = path.collect {|str| Component.new str}
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end
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||||
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def initialize_hashes(options)
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path_keys = components.collect {|c| c.key }.compact
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self.known = {}
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||||
defaults = options.delete(:defaults) || {}
|
||||
conditions = options.delete(:require) || {}
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||||
conditions.update(options.delete(:requirements) || {})
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||||
|
||||
options.each do |k, v|
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||||
if path_keys.include?(k) then (v.is_a?(Regexp) ? conditions : defaults)[k] = v
|
||||
else known[k] = v
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||||
end
|
||||
end
|
||||
[defaults, conditions]
|
||||
end
|
||||
|
||||
def configure_components(defaults, conditions)
|
||||
components.each do |component|
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||||
if defaults.key?(component.key) then component.default = defaults[component.key]
|
||||
elsif component.key == :action then component.default = 'index'
|
||||
elsif component.key == :id then component.default = nil
|
||||
end
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||||
|
||||
component.condition = conditions[component.key] if conditions.key?(component.key)
|
||||
end
|
||||
end
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||||
|
||||
def add_default_requirements
|
||||
component_keys = components.collect {|c| c.key}
|
||||
known[:action] ||= 'index' unless component_keys.include? :action
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||||
end
|
||||
end
|
||||
|
||||
class RouteSet #:nodoc:
|
||||
attr_reader :routes, :categories, :controller_to_selector
|
||||
def initialize
|
||||
@routes = []
|
||||
@generation_methods = Hash.new(:generate_default_path)
|
||||
end
|
||||
|
||||
def generate(options, request_or_recall_hash = {})
|
||||
recall = request_or_recall_hash.is_a?(Hash) ? request_or_recall_hash : request_or_recall_hash.symbolized_path_parameters
|
||||
use_recall = true
|
||||
|
||||
controller = options[:controller]
|
||||
options[:action] ||= 'index' if controller
|
||||
recall_controller = recall[:controller]
|
||||
if (recall_controller && recall_controller.include?(?/)) || (controller && controller.include?(?/))
|
||||
recall = {} if controller && controller[0] == ?/
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||||
options[:controller] = Routing.controller_relative_to(controller, recall_controller)
|
||||
end
|
||||
options = recall.dup if options.empty? # XXX move to url_rewriter?
|
||||
|
||||
keys_to_delete = []
|
||||
Routing.treat_hash(options, keys_to_delete)
|
||||
|
||||
merged = recall.merge(options)
|
||||
keys_to_delete.each {|key| merged.delete key}
|
||||
expire_on = Routing.expiry_hash(options, recall)
|
||||
|
||||
generate_path(merged, options, expire_on)
|
||||
end
|
||||
|
||||
def generate_path(merged, options, expire_on)
|
||||
send @generation_methods[merged[:controller]], merged, options, expire_on
|
||||
end
|
||||
def generate_default_path(*args)
|
||||
write_generation
|
||||
generate_default_path(*args)
|
||||
end
|
||||
|
||||
def write_generation
|
||||
method_sources = []
|
||||
@generation_methods = Hash.new(:generate_default_path)
|
||||
categorize_routes.each do |controller, routes|
|
||||
next unless routes.length < @routes.length
|
||||
|
||||
ivar = controller.gsub('/', '__')
|
||||
method_name = "generate_path_for_#{ivar}".to_sym
|
||||
instance_variable_set "@#{ivar}", routes
|
||||
code = generation_code_for(ivar, method_name).to_s
|
||||
method_sources << code
|
||||
|
||||
filename = "generated_code/routing/generation_for_controller_#{controller}.rb"
|
||||
eval(code, nil, filename)
|
||||
|
||||
@generation_methods[controller.to_s] = method_name
|
||||
@generation_methods[controller.to_sym] = method_name
|
||||
end
|
||||
|
||||
code = generation_code_for('routes', 'generate_default_path').to_s
|
||||
eval(code, nil, 'generated_code/routing/generation.rb')
|
||||
|
||||
return (method_sources << code)
|
||||
end
|
||||
|
||||
def recognize(request)
|
||||
string_path = request.path
|
||||
string_path.chomp! if string_path[0] == ?/
|
||||
path = string_path.split '/'
|
||||
path.shift
|
||||
|
||||
hash = recognize_path(path)
|
||||
return recognition_failed(request) unless hash && hash['controller']
|
||||
|
||||
controller = hash['controller']
|
||||
hash['controller'] = controller.controller_path
|
||||
request.path_parameters = hash
|
||||
controller.new
|
||||
end
|
||||
alias :recognize! :recognize
|
||||
|
||||
def recognition_failed(request)
|
||||
raise ActionController::RoutingError, "Recognition failed for #{request.path.inspect}"
|
||||
end
|
||||
|
||||
def write_recognition
|
||||
g = generator = CodeGeneration::RecognitionGenerator.new
|
||||
g.finish_statement = Proc.new {|hash_expr| "return #{hash_expr}"}
|
||||
|
||||
g.def "self.recognize_path(path)" do
|
||||
each do |route|
|
||||
g << 'index = 0'
|
||||
route.write_recognition(g)
|
||||
end
|
||||
end
|
||||
|
||||
eval g.to_s, nil, 'generated/routing/recognition.rb'
|
||||
return g.to_s
|
||||
end
|
||||
|
||||
def generation_code_for(ivar = 'routes', method_name = nil)
|
||||
routes = instance_variable_get('@' + ivar)
|
||||
key_ivar = "@keys_for_#{ivar}"
|
||||
instance_variable_set(key_ivar, routes.collect {|route| route.keys})
|
||||
|
||||
g = generator = CodeGeneration::GenerationGenerator.new
|
||||
g.def "self.#{method_name}(merged, options, expire_on)" do
|
||||
g << 'unused_count = options.length + 1'
|
||||
g << "unused_keys = keys = options.keys"
|
||||
g << 'path = nil'
|
||||
|
||||
routes.each_with_index do |route, index|
|
||||
g << "new_unused_keys = keys - #{key_ivar}[#{index}]"
|
||||
g << 'new_path = ('
|
||||
g.source.indent do
|
||||
if index.zero?
|
||||
g << "new_unused_count = new_unused_keys.length"
|
||||
g << "hash = merged; not_expired = true"
|
||||
route.write_generation(g.dup)
|
||||
else
|
||||
g.if "(new_unused_count = new_unused_keys.length) < unused_count" do |gp|
|
||||
gp << "hash = merged; not_expired = true"
|
||||
route.write_generation(gp)
|
||||
end
|
||||
end
|
||||
end
|
||||
g.source.lines.last << ' )' # Add the closing brace to the end line
|
||||
g.if 'new_path' do
|
||||
g << 'return new_path, [] if new_unused_count.zero?'
|
||||
g << 'path = new_path; unused_keys = new_unused_keys; unused_count = new_unused_count'
|
||||
end
|
||||
end
|
||||
|
||||
g << "raise RoutingError, \"No url can be generated for the hash \#{options.inspect}\" unless path"
|
||||
g << "return path, unused_keys"
|
||||
end
|
||||
|
||||
return g
|
||||
end
|
||||
|
||||
def categorize_routes
|
||||
@categorized_routes = by_controller = Hash.new(self)
|
||||
|
||||
known_controllers.each do |name|
|
||||
set = by_controller[name] = []
|
||||
each do |route|
|
||||
set << route if route.matches_controller? name
|
||||
end
|
||||
end
|
||||
|
||||
@categorized_routes
|
||||
end
|
||||
|
||||
def known_controllers
|
||||
@routes.inject([]) do |known, route|
|
||||
if (controller = route.known[:controller])
|
||||
if controller.is_a?(Regexp)
|
||||
known << controller.source.scan(%r{[\w\d/]+}).select {|word| controller =~ word}
|
||||
else known << controller
|
||||
end
|
||||
end
|
||||
known
|
||||
end.uniq
|
||||
end
|
||||
|
||||
def reload
|
||||
NamedRoutes.clear
|
||||
|
||||
if defined?(RAILS_ROOT) then load(File.join(RAILS_ROOT, 'config', 'routes.rb'))
|
||||
else connect(':controller/:action/:id', :action => 'index', :id => nil)
|
||||
end
|
||||
|
||||
NamedRoutes.install
|
||||
end
|
||||
|
||||
def connect(*args)
|
||||
new_route = Route.new(*args)
|
||||
@routes << new_route
|
||||
return new_route
|
||||
end
|
||||
|
||||
def draw
|
||||
old_routes = @routes
|
||||
@routes = []
|
||||
|
||||
begin yield self
|
||||
rescue
|
||||
@routes = old_routes
|
||||
raise
|
||||
end
|
||||
write_generation
|
||||
write_recognition
|
||||
end
|
||||
|
||||
def empty?() @routes.empty? end
|
||||
|
||||
def each(&block) @routes.each(&block) end
|
||||
|
||||
# Defines a new named route with the provided name and arguments.
|
||||
# This method need only be used when you wish to use a name that a RouteSet instance
|
||||
# method exists for, such as categories.
|
||||
#
|
||||
# For example, map.categories '/categories', :controller => 'categories' will not work
|
||||
# due to RouteSet#categories.
|
||||
def named_route(name, path, hash = {})
|
||||
route = connect(path, hash)
|
||||
NamedRoutes.name_route(route, name)
|
||||
route
|
||||
end
|
||||
|
||||
def method_missing(name, *args)
|
||||
(1..2).include?(args.length) ? named_route(name, *args) : super(name, *args)
|
||||
end
|
||||
|
||||
def extra_keys(options, recall = {})
|
||||
generate(options.dup, recall).last
|
||||
end
|
||||
end
|
||||
|
||||
module NamedRoutes #:nodoc:
|
||||
Helpers = []
|
||||
class << self
|
||||
def clear() Helpers.clear end
|
||||
|
||||
def hash_access_name(name)
|
||||
"hash_for_#{name}_url"
|
||||
end
|
||||
|
||||
def url_helper_name(name)
|
||||
"#{name}_url"
|
||||
end
|
||||
|
||||
def known_hash_for_route(route)
|
||||
hash = route.known.symbolize_keys
|
||||
route.defaults.each do |key, value|
|
||||
hash[key.to_sym] ||= value if value
|
||||
end
|
||||
hash[:controller] = "/#{hash[:controller]}"
|
||||
|
||||
hash
|
||||
end
|
||||
|
||||
def define_hash_access_method(route, name)
|
||||
hash = known_hash_for_route(route)
|
||||
define_method(hash_access_name(name)) do |*args|
|
||||
args.first ? hash.merge(args.first) : hash
|
||||
end
|
||||
end
|
||||
|
||||
def name_route(route, name)
|
||||
define_hash_access_method(route, name)
|
||||
|
||||
module_eval(%{def #{url_helper_name name}(options = {})
|
||||
url_for(#{hash_access_name(name)}.merge(options))
|
||||
end}, "generated/routing/named_routes/#{name}.rb")
|
||||
|
||||
protected url_helper_name(name), hash_access_name(name)
|
||||
|
||||
Helpers << url_helper_name(name).to_sym
|
||||
Helpers << hash_access_name(name).to_sym
|
||||
Helpers.uniq!
|
||||
end
|
||||
|
||||
def install(cls = ActionController::Base)
|
||||
cls.send :include, self
|
||||
if cls.respond_to? :helper_method
|
||||
Helpers.each do |helper_name|
|
||||
cls.send :helper_method, helper_name
|
||||
end
|
||||
end
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
Routes = RouteSet.new
|
||||
end
|
||||
end
|
||||
Loading…
Add table
Add a link
Reference in a new issue