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142 lines
3.7 KiB
Ruby
142 lines
3.7 KiB
Ruby
require "action_dispatch/journey/router/utils"
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require "action_dispatch/journey/routes"
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require "action_dispatch/journey/formatter"
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before = $-w
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$-w = false
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require "action_dispatch/journey/parser"
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$-w = before
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require "action_dispatch/journey/route"
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require "action_dispatch/journey/path/pattern"
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module ActionDispatch
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module Journey # :nodoc:
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class Router # :nodoc:
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class RoutingError < ::StandardError # :nodoc:
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end
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attr_accessor :routes
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def initialize(routes)
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@routes = routes
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end
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def serve(req)
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find_routes(req).each do |match, parameters, route|
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set_params = req.path_parameters
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path_info = req.path_info
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script_name = req.script_name
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unless route.path.anchored
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req.script_name = (script_name.to_s + match.to_s).chomp("/")
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req.path_info = match.post_match
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req.path_info = "/" + req.path_info unless req.path_info.start_with? "/"
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end
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req.path_parameters = set_params.merge parameters
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status, headers, body = route.app.serve(req)
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if "pass" == headers["X-Cascade"]
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req.script_name = script_name
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req.path_info = path_info
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req.path_parameters = set_params
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next
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end
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return [status, headers, body]
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end
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return [404, { "X-Cascade" => "pass" }, ["Not Found"]]
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end
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def recognize(rails_req)
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find_routes(rails_req).each do |match, parameters, route|
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unless route.path.anchored
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rails_req.script_name = match.to_s
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rails_req.path_info = match.post_match.sub(/^([^\/])/, '/\1')
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end
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yield(route, parameters)
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end
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end
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def visualizer
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tt = GTG::Builder.new(ast).transition_table
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groups = partitioned_routes.first.map(&:ast).group_by(&:to_s)
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asts = groups.values.map(&:first)
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tt.visualizer(asts)
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end
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private
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def partitioned_routes
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routes.partition { |r|
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r.path.anchored && r.ast.grep(Nodes::Symbol).all? { |n| n.default_regexp? }
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}
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end
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def ast
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routes.ast
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end
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def simulator
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routes.simulator
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end
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def custom_routes
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routes.custom_routes
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end
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def filter_routes(path)
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return [] unless ast
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simulator.memos(path) { [] }
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end
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def find_routes(req)
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routes = filter_routes(req.path_info).concat custom_routes.find_all { |r|
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r.path.match(req.path_info)
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}
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routes =
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if req.head?
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match_head_routes(routes, req)
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else
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match_routes(routes, req)
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end
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routes.sort_by!(&:precedence)
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routes.map! { |r|
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match_data = r.path.match(req.path_info)
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path_parameters = r.defaults.dup
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match_data.names.zip(match_data.captures) { |name,val|
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path_parameters[name.to_sym] = Utils.unescape_uri(val) if val
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}
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[match_data, path_parameters, r]
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}
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end
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def match_head_routes(routes, req)
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verb_specific_routes = routes.select(&:requires_matching_verb?)
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head_routes = match_routes(verb_specific_routes, req)
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if head_routes.empty?
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begin
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req.request_method = "GET"
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match_routes(routes, req)
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ensure
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req.request_method = "HEAD"
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end
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else
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head_routes
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end
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end
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def match_routes(routes, req)
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routes.select { |r| r.matches?(req) }
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end
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end
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end
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end
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