Rack::URLMap takes a hash mapping urls or paths to apps, and dispatches accordingly. Support for HTTP/1.1 host names exists if the URLs start with http:// or https://.
URLMap modifies the SCRIPT_NAME and PATH_INFO such that the part relevant for dispatch is in the SCRIPT_NAME, and the rest in the PATH_INFO. This should be taken care of when you need to reconstruct the URL in order to create links.
URLMap dispatches in such a way that the longest paths are tried first, since they are most specific.
(Not documented)
# File lib/rack/urlmap.rb, line 36 36: def call(env) 37: path = env["PATH_INFO"].to_s.squeeze("/") 38: script_name = env['SCRIPT_NAME'] 39: hHost, sName, sPort = env.values_at('HTTP_HOST','SERVER_NAME','SERVER_PORT') 40: @mapping.each { |host, location, app| 41: next unless (hHost == host || sName == host \ 42: || (host.nil? && (hHost == sName || hHost == sName+':'+sPort))) 43: next unless location == path[0, location.size] 44: next unless path[location.size] == nil || path[location.size] == ?/ 45: 46: return app.call( 47: env.merge( 48: 'SCRIPT_NAME' => (script_name + location), 49: 'PATH_INFO' => path[location.size..-1])) 50: } 51: [404, {"Content-Type" => "text/plain"}, ["Not Found: #{path}"]] 52: end
(Not documented)
# File lib/rack/urlmap.rb, line 19 19: def remap(map) 20: @mapping = map.map { |location, app| 21: if location =~ %r{\Ahttps?://(.*?)(/.*)} 22: host, location = $1, $2 23: else 24: host = nil 25: end 26: 27: unless location[0] == ?/ 28: raise ArgumentError, "paths need to start with /" 29: end 30: location = location.chomp('/') 31: 32: [host, location, app] 33: }.sort_by { |(h, l, a)| [h ? -h.size : (-1.0 / 0.0), -l.size] } # Longest path first 34: end
Disabled; run with --debug to generate this.
Generated with the Darkfish Rdoc Generator 1.1.6.