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module Padrino
##
# This class is an extended version of Rack::URLMap.
#
# Padrino::Router like Rack::URLMap dispatches in such a way that the
# longest paths are tried first, since they are most specific.
#
# Features:
#
# * Map a path to the specified App
# * Ignore server names (this solve issues with vhost and domain aliases)
# * Use hosts instead of server name for mappings (this help us with our vhost and domain aliases)
#
# @example
#
# routes = Padrino::Router.new do
# map(:path => "/", :to => PadrinoWeb, :host => "padrino.local")
# map(:path => "/", :to => Admin, :host => "admin.padrino.local")
# end
# run routes
#
# routes = Padrino::Router.new do
# map(:path => "/", :to => PadrinoWeb, :host => /*.padrino.local/)
# end
# run routes
#
# @api semipublic
class Router
def initialize(*mapping, &block)
@mapping = []
mapping.each { |m| map(m) }
instance_eval(&block) if block
end
##
# Map a route path and host to a specified application.
#
# @param [Hash] options
# The options to map.
# @option options [Sinatra::Application] :to
# The class of the application to mount.
# @option options [String] :path ("/")
# The path to map the specified application.
# @option options [String] :host
# The host to map the specified application.
#
# @example
# map(:path => "/", :to => PadrinoWeb, :host => "padrino.local")
#
# @return [Array] The sorted route mappings.
# @api semipublic
def map(options={})
path = options[:path] || "/"
host = options[:host]
app = options[:to]
raise ArgumentError, "paths need to start with /" if path[0] != ?/
raise ArgumentError, "app is required" if app.nil?
path = path.chomp('/')
match = Regexp.new("^#{Regexp.quote(path).gsub('/', '/+')}(.*)", nil, 'n')
host = Regexp.new("^#{Regexp.quote(host)}$", true, 'n') unless host.nil? || host.is_a?(Regexp)
@mapping << [host, path, match, app]
end
# The call handler setup to route a request given the mappings specified.
def call(env)
began_at = Time.now
path_info = env["PATH_INFO"].to_s
script_name = env['SCRIPT_NAME']
http_host = env['HTTP_HOST']
last_result = nil
@mapping.each do |host, path, match, app|
next unless host.nil? || http_host =~ host
next unless path_info =~ match && rest = $1
next unless rest.empty? || rest[0] == ?/
rest = "/" if rest.empty?
env['SCRIPT_NAME'] = script_name + path
env['PATH_INFO'] = rest
last_result = app.call(env)
cascade_setting = app.respond_to?(:cascade) ? app.cascade : true
cascade_statuses = cascade_setting.respond_to?(:include?) ? cascade_setting : Mounter::DEFAULT_CASCADE
break unless cascade_setting && cascade_statuses.include?(last_result[0])
end
last_result || begin
env['SCRIPT_NAME'] = script_name
env['PATH_INFO'] = path_info
Padrino::Logger::Rack.new(nil,'/').send(:log, env, 404, {}, began_at) if logger.debug?
[404, {"Content-Type" => "text/plain", "X-Cascade" => "pass"}, ["Not Found: #{path_info}"]]
end
end
end
end