http_status.rb

module Cage
  class HTTPStatus < BasicObject
    STATUSES = ::Hash.new "UNKNOWN"
    STATUSES.merge! ::Hash[
      100 => "CONTINUE",
      101 => "SWITCHING PROTOCOLS",
      102 => "PROCESSING",
      103 => "CHECKPOINT",
      122 => "REQUEST-URI TOO LONG",
      200 => "OK",
      201 => "CREATED",
      202 => "ACCEPTED",
      203 => "NON-AUTHORITATIVE INFORMATION",
      204 => "NO CONTENT",
      205 => "RESET CONTENT",
      206 => "PARTIAL CONTENT",
      207 => "MULTI-STATUS",
      208 => "ALREADY REPORTED",
      226 => "IM USED",
      300 => "MULTIPLE CHOICES",
      301 => "MOVED PERMANENTLY",
      302 => "FOUND",
      303 => "SEE OTHER",
      304 => "NOT MODIFIED",
      305 => "USE PROXY",
      306 => "SWITCH PROXY",
      307 => "TEMPORARY REDIRECT",
      308 => "RESUME INCOMPLETE",
      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",
      418 => "I'M A TEAPOT (RFC 2324)",
      422 => "UNPROCESSABLE ENTITY (WEBDAV) (RFC 4918)",
      423 => "LOCKED (WEBDAV) (RFC 4918)",
      424 => "FAILED DEPENDENCY (WEBDAV) (RFC 4918)",
      425 => "UNORDERED COLLECTION (RFC 3648)",
      426 => "UPGRADE REQUIRED (RFC 2817)",
      428 => "PRECONDITION REQUIRED",
      429 => "TOO MANY REQUESTS",
      431 => "REQUEST HEADER FIELDS TOO LARGE",
      444 => "NO RESPONSE",
      449 => "RETRY WITH",
      450 => "BLOCKED BY WINDOWS PARENTAL CONTROLS",
      499 => "CLIENT CLOSED REQUEST",
      500 => "INTERNAL SERVER ERROR",
      501 => "NOT IMPLEMENTED",
      502 => "BAD GATEWAY",
      503 => "SERVICE UNAVAILABLE",
      504 => "GATEWAY TIMEOUT",
      505 => "HTTP VERSION NOT SUPPORTED",
      506 => "VARIANT ALSO NEGOTIATES",
      507 => "INSUFFICIENT STORAGE",
      508 => "LOOP DETECTED",
      509 => "BANDWIDTH LIMIT EXCEEDED (APACHE BW/LIMITED EXTENSION)",
      510 => "NOT EXTENDED",
      511 => "NETWORK AUTHENTICATION REQUIRED",
      598 => "NETWORK READ TIMEOUT ERROR",
      599 => "NETWORK CONNECT TIMEOUT ERROR",
    ]
    STATUSES.freeze

    def initialize status_code
      @code = status_code
      @message = STATUSES[status_code]
    end

    def != other
      @code != other
    end

    def == other
      @code == other
    end

    def inspect
      "#{@code} #{@message}"
    end

    alias_method :to_s, :inspect
    alias_method :pretty_inspect, :inspect

    def method_missing symbol, *args, &block
      @code.send symbol, *args, &block
    end

    def respond_to? symbol
      @code.respond_to? symbol || super
    end

    def self.new status_code
      status_objects[status_code] ||= super
    end

    def self.status_objects
      @status_objects ||= {}
    end
  end
end