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require 'action_dispatch/journey/router/utils'
require 'action_dispatch/journey/router/strexp'
require 'action_dispatch/journey/routes'
require 'action_dispatch/journey/formatter'
before = $-w
$-w = false
require 'action_dispatch/journey/parser'
$-w = before
require 'action_dispatch/journey/route'
require 'action_dispatch/journey/path/pattern'
module ActionDispatch
module Journey # :nodoc:
class Router # :nodoc:
class RoutingError < ::StandardError # :nodoc:
end
# :nodoc:
VERSION = '2.0.0'
attr_accessor :routes
def initialize(routes)
@routes = routes
end
def serve(req)
find_routes(req).each do |match, parameters, route|
set_params = req.path_parameters
path_info = req.path_info
script_name = req.script_name
unless route.path.anchored
req.script_name = (script_name.to_s + match.to_s).chomp('/')
req.path_info = match.post_match
end
req.path_parameters = set_params.merge parameters
status, headers, body = route.app.call(req.env)
if 'pass' == headers['X-Cascade']
req.script_name = script_name
req.path_info = path_info
req.path_parameters = set_params
next
end
return [status, headers, body]
end
return [404, {'X-Cascade' => 'pass'}, ['Not Found']]
end
def recognize(rails_req)
find_routes(rails_req).each do |match, parameters, route|
unless route.path.anchored
rails_req.script_name = match.to_s
rails_req.path_info = match.post_match.sub(/^([^\/])/, '/\1')
end
yield(route, parameters)
end
end
def visualizer
tt = GTG::Builder.new(ast).transition_table
groups = partitioned_routes.first.map(&:ast).group_by { |a| a.to_s }
asts = groups.values.map { |v| v.first }
tt.visualizer(asts)
end
private
def partitioned_routes
routes.partitioned_routes
end
def ast
routes.ast
end
def simulator
routes.simulator
end
def custom_routes
partitioned_routes.last
end
def filter_routes(path)
return [] unless ast
simulator.memos(path) { [] }
end
def find_routes req
routes = filter_routes(req.path_info).concat custom_routes.find_all { |r|
r.path.match(req.path_info)
}
routes.concat get_routes_as_head(routes)
routes.sort_by!(&:precedence).select! { |r| r.matches?(req) }
routes.map! { |r|
match_data = r.path.match(req.path_info)
path_parameters = r.defaults.dup
match_data.names.zip(match_data.captures) { |name,val|
path_parameters[name.to_sym] = Utils.unescape_uri(val) if val
}
[match_data, path_parameters, r]
}
end
def get_routes_as_head(routes)
precedence = (routes.map(&:precedence).max || 0) + 1
routes = routes.select { |r|
r.verb === "GET" && !(r.verb === "HEAD")
}.map! { |r|
Route.new(r.name,
r.app,
r.path,
r.conditions.merge(request_method: "HEAD"),
r.defaults).tap do |route|
route.precedence = r.precedence + precedence
end
}
routes.flatten!
routes
end
end
end
end
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