Use rack's status code list as a base

actionpack/lib/action_dispatch/http/status_codes.rb

@@ -1,88 +1,40 @@
 module ActionDispatch
   module StatusCodes #:nodoc:
-    # Defines the standard HTTP status codes, by integer, with their
-    # corresponding default message texts.
-    # Source: http://www.iana.org/assignments/http-status-codes
-    STATUS_CODES = {
-      100 => "Continue",
-      101 => "Switching Protocols",
+    STATUS_CODES = Rack::Utils::HTTP_STATUS_CODES.merge({
       102 => "Processing",
-
-      200 => "OK",
-      201 => "Created",
-      202 => "Accepted",
-      203 => "Non-Authoritative Information",
-      204 => "No Content",
-      205 => "Reset Content",
-      206 => "Partial Content",
       207 => "Multi-Status",
       226 => "IM Used",
-
-      300 => "Multiple Choices",
-      301 => "Moved Permanently",
-      302 => "Found",
-      303 => "See Other",
-      304 => "Not Modified",
-      305 => "Use Proxy",
-      307 => "Temporary Redirect",
-
-      400 => "Bad Request",
-      401 => "Unauthorized",
-      402 => "Payment Required",
-      403 => "Forbidden",
-      404 => "Not Found",
-      405 => "Method Not Allowed",
-      406 => "Not Acceptable",
-      407 => "Proxy Authentication Required",
-      408 => "Request Timeout",
-      409 => "Conflict",
-      410 => "Gone",
-      411 => "Length Required",
-      412 => "Precondition Failed",
-      413 => "Request Entity Too Large",
-      414 => "Request-URI Too Long",
-      415 => "Unsupported Media Type",
-      416 => "Requested Range Not Satisfiable",
-      417 => "Expectation Failed",
       422 => "Unprocessable Entity",
       423 => "Locked",
       424 => "Failed Dependency",
       426 => "Upgrade Required",
-
-      500 => "Internal Server Error",
-      501 => "Not Implemented",
-      502 => "Bad Gateway",
-      503 => "Service Unavailable",
-      504 => "Gateway Timeout",
-      505 => "HTTP Version Not Supported",
       507 => "Insufficient Storage",
       510 => "Not Extended"
-    }
+    }).freeze
 
     # Provides a symbol-to-fixnum lookup for converting a symbol (like
     # :created or :not_implemented) into its corresponding HTTP status
     # code (like 200 or 501).
-    SYMBOL_TO_STATUS_CODE = STATUS_CODES.inject({}) do |hash, (code, message)|
+    SYMBOL_TO_STATUS_CODE = STATUS_CODES.inject({}) { |hash, (code, message)|
       hash[message.gsub(/ /, "").underscore.to_sym] = code
       hash
-    end
+    }.freeze
 
-    # Given a status parameter, determine whether it needs to be converted
-    # to a string. If it is a fixnum, use the STATUS_CODES hash to lookup
-    # the default message. If it is a symbol, use the SYMBOL_TO_STATUS_CODE
-    # hash to convert it.
-    def interpret_status(status)
-      case status
-      when Fixnum then
-        "#{status} #{STATUS_CODES[status]}".strip
-      when Symbol then
-        interpret_status(SYMBOL_TO_STATUS_CODE[status] ||
-          "500 Unknown Status #{status.inspect}")
-      else
-        status.to_s
+    private
+      # Given a status parameter, determine whether it needs to be converted
+      # to a string. If it is a fixnum, use the STATUS_CODES hash to lookup
+      # the default message. If it is a symbol, use the SYMBOL_TO_STATUS_CODE
+      # hash to convert it.
+      def interpret_status(status)
+        case status
+        when Fixnum then
+          "#{status} #{STATUS_CODES[status]}".strip
+        when Symbol then
+          interpret_status(SYMBOL_TO_STATUS_CODE[status] ||
+            "500 Unknown Status #{status.inspect}")
+        else
+          status.to_s
+        end
       end
-    end
-    private :interpret_status
-
   end
 end