-;;; lirc.el --- Lambdalabs irc client -*- lexical-binding:t -*-
+;;; lirc.el --- Lightweight irc client -*- lexical-binding:t -*-
;; Copyright (C) 2021 Tim Vaughan
;;; Code:
-(provide 'lerc)
+(provide 'lirc)
;;; Customizations
;;
(defcustom lirc-port 6667
"Default port.")
-(defcustom lirc-prompt "> "
+(defcustom lirc-prompt-string "> "
"Prompt.")
+;;; Faces
+;;
+
+(defface lirc-prompt
+ '((t :inherit org-level-2))
+ "Face used for the prompt.")
+
+(defface lirc-channel
+ '((t :inherit org-list-dt))
+ "Face used for the channel name in the prompt.")
+
+;;; Global variables
+;;
+
+
+;;; Network process
+;;
+
(defvar lirc-response "")
(defun lirc-filter (proc string)
(dolist (line (split-string (concat lirc-response string) "\n"))
(if (string-suffix-p "\r" line)
- (lirc-process-msg-string (string-trim line))
+ (lirc-eval-msg-string (string-trim line))
(setq lirc-response line))))
(defun lirc-get-process ()
:nowait t
:buffer "*lirc*"))))
+;;; Messages
+;;
+
(defun lirc-as-string (obj)
(if obj
(with-output-to-string (princ obj))
(list (lirc-as-string tags)
(lirc-as-string src)
(upcase (lirc-as-string cmd))
- (mapcar #'lirc-as-string params)))
+ (mapcar #'lirc-as-string
+ (if (and params (listp (elt params 0)))
+ (elt params 0)
+ params))))
(defun lirc-msg-tags (msg) (elt msg 0))
(defun lirc-msg-src (msg) (elt msg 1))
(defun lirc-msg-cmd (msg) (elt msg 2))
(defun lirc-msg-params (msg) (elt msg 3))
+(defun lirc-msg-trail (msg)
+ (let ((params (lirc-msg-params msg)))
+ (if params
+ (elt params (- (length params) 1)))))
(defvar lirc-msg-regex
(rx
(opt (: "@" (group (* (not (or "\n" "\r" ";" " ")))))
(* whitespace))
- (opt (: ":" (group (* (not (or "\n" "\r" " ")))))
+ (opt (: ":" (: (group (* (not (any space "!" "@"))))
+ (* (not (any space)))))
(* whitespace))
(group (: (* (not whitespace))))
(* whitespace)
- (opt (group (+ not-newline)))))
+ (opt (group (+ not-newline))))
+ "Regex used to parse IRC messages.
+Note that this regex is incomplete. Noteably, we discard the non-nick
+portion of the source component of the message, as LIRC doesn't use this.")
(defun lirc-string->msg (string)
(if (string-match lirc-msg-regex string)
(apply #'lirc-msg (append (list tags src cmd) params)))
(error "Failed to parse string " string)))
+(defun lirc--filtered-join (&rest args)
+ (string-join (seq-filter (lambda (el) el) args) " "))
+
(defun lirc-msg->string (msg)
(let ((tags (lirc-msg-tags msg))
(src (lirc-msg-src msg))
(cmd (lirc-msg-cmd msg))
(params (lirc-msg-params msg)))
- (concat
- (if tags (concat "@" tags " ") "")
- (if src (concat ":" src " ") "")
- cmd " "
+ (lirc--filtered-join
+ (if tags (concat "@" tags) nil)
+ (if src (concat ":" src) nil)
+ cmd
(if (> (length params) 1)
(string-join (seq-take params (- (length params) 1)) " ")
- "")
+ nil)
(if (> (length params) 0)
- (concat " :" (elt params (- (length params) 1)))))))
+ (concat ":" (elt params (- (length params) 1)))
+ nil))))
+
+
+;;; Channels
+;;
+
+(defvar lirc-current-channel nil)
+(defvar lirc-channel-list nil)
+
+(defun lirc-add-channel (channel-name)
+ (add-to-list 'lirc-channel-list
+ (list channel-name)))
+
+(defun lirc-del-channel (channel-name)
+ (setq lirc-channel-list
+ (assoc-delete-all channel-name lirc-channel-list)))
+
+(defun lirc-get-channel-users (channel-name)
+ (cdr (assoc channel-name lirc-channel-list)))
+
+(defun lirc-set-channel-users (channel-name users)
+ (setcdr (assoc channel-name lirc-channel-list) users))
+
+(defun lirc-add-channel-users (channel-name &rest users)
+ (let ((current-users (lirc-channel-get-users channel-name)))
+ (lirc-channel-set-users channel-name (append users current-users))))
+
+(defun lirc-del-channel-users (channel-name &rest users)
+ (let ((current-users (lirc-get-channel-users channel-name)))
+ (lirc-channel-set-users channel-name
+ (cl-set-difference current-users users :test #'equal))))
+
+
+;;; Buffer
+;;
(defun lirc-display-string (string)
- (with-current-buffer "*lirc*"
- (let ((inhibit-read-only t))
- (save-excursion
- (goto-char (point-max))
- (insert string "\n")))))
-
-(defun lirc-process-msg-string (string)
- (let ((msg (lirc-string->msg string)))
- (cond
- ((equal (lirc-msg-cmd msg) "PING")
- (lirc-send-msg
- (lirc-msg nil nil "PONG" (lirc-msg-params msg))))
- (t
- (lirc-display-string (lirc-msg->string msg))))))
+ (with-current-buffer (get-buffer-create "*lirc*")
+ (save-excursion
+ (goto-char lirc-prompt-marker)
+ (let ((inhibit-read-only t))
+ (insert-before-markers (propertize (concat string "\n") 'read-only t))))))
(defun lirc-connect ()
(lirc-send-msg (lirc-msg nil nil "USER" lirc-user-name 0 "*" lirc-full-name))
(defun lirc-send-msg (msg)
(let ((proc (lirc-get-process)))
(process-send-string proc (concat (lirc-msg->string msg) "\r\n"))))
+
+(defun lirc-render-prompt ()
+ (with-current-buffer "*lirc*"
+ (set-marker-insertion-type lirc-prompt-marker nil)
+ (set-marker-insertion-type lirc-input-marker t)
+ (save-excursion
+ (let ((inhibit-read-only t))
+ (delete-region lirc-prompt-marker lirc-input-marker)
+ (goto-char lirc-prompt-marker)
+ (insert
+ (propertize (if lirc-current-channel
+ lirc-current-channel
+ "[no channel]")
+ 'face 'lirc-channel
+ 'read-only t)
+ (propertize lirc-prompt-string
+ 'face 'lirc-prompt
+ 'read-only t
+ 'rear-nonsticky t)))))
+ (set-marker-insertion-type lirc-input-marker nil))
+(defvar lirc-prompt-marker nil
+ "Marker for prompt position in LIRC buffer.")
+
+(defvar lirc-input-marker nil
+ "Marker for prompt position in LIRC buffer.")
+
+(defun lirc-setup-buffer ()
+ (with-current-buffer (get-buffer-create "*lirc*")
+ (if (markerp lirc-prompt-marker)
+ (set-marker lirc-prompt-marker (point-max))
+ (setq lirc-prompt-marker (point-max-marker)))
+ (if (markerp lirc-input-marker)
+ (set-marker lirc-input-marker (point-max))
+ (setq lirc-input-marker (point-max-marker)))
+ (lirc-render-prompt)
+ (goto-char (point-max))
+ (recenter -1)))
+
+;;; Message evaluation
+;;
+
+(defun lirc-eval-msg-string (string)
+ (lirc-display-string string)
+ (let* ((msg (lirc-string->msg string)))
+ (pcase (lirc-msg-cmd msg)
+ ("PING"
+ (lirc-send-msg
+ (lirc-msg nil nil "PONG" (lirc-msg-params msg))))
+ ;; ((rx (= 3 digit))
+ ;; (lirc-display-string (string-join (cdr (lirc-msg-params msg)) " ")))
+
+ ("353" ; NAMEREPLY
+ (let* ((params (lirc-msg-params msg))
+ (channel (elt params 2))
+ (names (split-string (elt params 3))))
+ (apply #'lirc-add-channel-users (cons channel names))))
+
+ ((and "JOIN"
+ (guard (equal lirc-nick (lirc-msg-src msg))))
+ (let ((channel (car (lirc-msg-params msg))))
+ (setq lirc-current-channel channel)
+ (lirc-add-channel channel)
+ (lirc-render-prompt)))
+
+ ("JOIN"
+ (let ((channel (car (lirc-msg-params msg)))
+ (nick (lirc-msg-src msg)))
+ (lirc-add-channel-users channel nick)))
+
+ ((and "PART"
+ (guard (equal lirc-nick (lirc-msg-src msg))))
+ (setq lirc-current-channel nil)
+ (lirc-del-channel (car (lirc-msg-params msg))))
+
+ ("PART"
+ (let ((channel (car (lirc-msg-params msg)))
+ (nick (lirc-msg-src msg)))
+ (lirc-del-channel-users channel nick)))
+
+ ((and "NICK"
+ (guard (equal lirc-nick (lirc-msg-src msg))))
+ (setq lirc-nick (car (lirc-msg-params msg)))
+ (lirc-display-string (concat "*** Set nick to " lirc-nick)))
+
+ ("PRIVMSG"
+ (let ((nick (lirc-msg-src msg))
+ (channel (car (lirc-msg-params msg)))
+ (text (cadr (lirc-msg-params msg))))
+ (lirc-display-string (concat channel " <" nick "> " text))))
+ (_
+ (lirc-display-string (lirc-msg->string msg))))))
+
+
+;;; Command entering
+;;
+
+(defun lirc-enter-string (string)
+ (if (string-prefix-p "/" string)
+ (pcase (substring string 1)
+ (cmd-str
+ (lirc-send-msg (lirc-msg nil nil cmd-str))))
+ (error "Not implemented.")))
+
+(defun lirc-enter ()
+ "Enter current contents of line after prompt."
+ (interactive)
+ (with-current-buffer "*lirc*"
+ (lirc-enter-string
+ (buffer-substring lirc-input-marker (point-max)))
+ (let ((inhibit-read-only t))
+ (delete-region lirc-input-marker (point-max)))))
+
+
+
+;;; Mode
+;;
+
+(defvar lirc-mode-map
+ (let ((map (make-sparse-keymap)))
+ (define-key map (kbd "RET") 'lirc-enter)
+ map))
+
+(define-derived-mode lirc-mode text-mode "lirc"
+ "Major mode for LIRC.")
+
+(when (fboundp 'evil-set-initial-state)
+ (evil-set-initial-state 'lirc-mode 'insert))
+
+;;; Main start procedure
+;;
(defun lirc ()
"Switch to *lirc* buffer."
(interactive)
- (pop-to-buffer-same-window "*lirc*")
+ (if (get-buffer "*lirc*")
+ (switch-to-buffer "*lirc*")
+ (switch-to-buffer "*lirc*"))
(lirc-mode)
- (lirc-connect))
+ (lirc-setup-buffer)
+ (lirc-connect)
+ "Started LIRC.")
-(define-derived-mode lirc-mode text-mode "lirc"
- "Major mode for LIRC.")
;;; lirc.el ends here
-:bs-mbpr348.d.ethz.ch
The Lambda Lab / projects / lurk.git / blobdiff