(connection-handler
:accessor connection-handler
:initform nil
- :documentation "Handler function for incoming messages")))
+ :documentation "Handler function for incoming messages")
+ (mode
+ :accessor connection-mode
+ :initform nil
+ :documentation "TODO(gefla)")))
(defun make-connection (&key (user nil)
(password nil)
(defparameter +C_EXIT+ "3")
(defparameter +C_FLUSH+ "4")
(defparameter +C_NOECHO+ "5")
-(defparameter +C_PROMPT+ "6")
+(defparameter +C_PROMPT+ "6")
(defparameter +C_ABORT+ "7")
(defparameter +C_REDIR+ "8")
(defparameter +C_PIPE+ "9")
(defparameter +C_FLASH+ "d")
(defparameter +C_INFORM+ "e")
-(defgeneric init-mode (connection message))
-(defmethod init-mode ((c connection) message)
- (declare (ignorable message))
- (play c))
+(defclass base-mode ()
+ ((connection :initarg :connection :accessor connection)))
+(defclass init-mode (base-mode)
+ ((play-sent-p :initform nil
+ :documentation "Have we already sent the play command?")))
+(defclass play-mode (base-mode) nil)
+
+(defun make-mode (connection mode)
+ (make-instance mode :connection connection))
-(defvar *line-type-dispatch*
- (list `(,+C_INIT+ . init-mode)))
+(defgeneric set-new-mode (base-mode new-mode))
+(defmethod set-new-mode ((m base-mode) new-mode)
+ (let* ((c (connection m))
+ (mode (make-mode c new-mode)))
+ (setf (connection-mode c) mode)))
+
+(defgeneric handle-data (base-mode message))
+(defgeneric handle-init (base-mode message))
+(defgeneric handle-prompt (base-mode message))
+
+(defmethod handle-init ((m init-mode) message)
+ (declare (ignorable message))
+ (with-slots (play-sent-p) m
+ (if (not play-sent-p)
+ (progn
+ (play (connection m))
+ (setf play-sent-p t))
+ (set-new-mode m 'play-mode))))
+
+(defmethod handle-data ((m play-mode) message)
+ (let* ((c (connection m))
+ (log (logging-stream c)))
+ (format log "handle-data ~a~%" message)))
+
+(defmethod handle-prompt ((m play-mode) message)
+ (let* ((c (connection m))
+ (log (logging-stream c)))
+ (with-input-from-string (s message)
+ (let* ((minutes (read s))
+ (btus (read s)))
+ (format log "[~a:~a]: ~%" minutes btus)))))
+
+(defparameter *line-type-dispatch*
+ (list `(,+C_DATA+ . handle-data)
+ `(,+C_INIT+ . handle-init)
+ `(,+C_PROMPT+ . handle-prompt)))
(defun parse-server-line (line)
(let* ((first-space-index
(values message message-type)))
(defmethod handle-connection ((c connection))
+ (setf (connection-mode c) (make-mode c 'init-mode))
(loop while (read-message c)))
(defun lookup-handler (message-type)
(cdr (assoc message-type *line-type-dispatch* :test 'string=)))
+(define-condition no-handler (error)
+ ((mode :initarg :mode)
+ (type :initarg :type))
+ (:report (lambda (condition stream)
+ (with-slots (mode type) condition
+ (format stream "No handler for ~a in mode ~a."
+ type mode)))))
(defmethod read-message ((c connection))
(let* ((s (network-stream c))
(log (logging-stream c))
(line (read-line s)))
(format log "< ~a~%" line)
(multiple-value-bind (message type) (parse-server-line line)
- (let ((handler (lookup-handler type)))
- (funcall handler c message)))
+ (let ((handler (lookup-handler type))
+ (mode (connection-mode c)))
+ (if handler
+ (funcall handler mode message)
+ (error 'no-handler :mode mode :type type))))
line))
(defmethod send-message ((c connection) message)