Add timers

lisp/acdw.el

@@ -457,5 +457,56 @@ sort order."
                 (car args))
         (cdr args)))
 
+
+;;; Timers!
+;; inspired by [[https://git.sr.ht/~protesilaos/tmr/tree/main/item/tmr.el][prot's tmr.el package]]
+
+(defvar +timer-string nil)
+(defvar +timer-timer nil)
+
+(defcustom +timer-running-string "⏰"
+  "What to display when the timer is running."
+  :type 'string)
+(defcustom +timer-done-string "❗"
+  "What to display when the timer is done."
+  :type 'string)
+
+(defun +timer (time)
+  "Set a timer for TIME."
+  (interactive (list (read-string "Set a timer for how long? ")))
+  (let ((secs (cond ((natnump time) (* time 60))
+                    ((and (stringp time)
+                          (string-match-p "[0-9]\\'" time))
+                     (* (string-to-number time) 60))
+                    (t (let ((secs 0)
+                             (time time))
+                         (save-match-data
+                           (while (string-match "\\([0-9.]+\\)\\([hms]\\)" time)
+                             (cl-incf secs
+                                      (* (string-to-number (match-string 1 time))
+                                         (pcase (match-string 2 time)
+                                           ("h" 3600)
+                                           ("m" 60)
+                                           ("s" 1))))
+                             (setq time (substring time (match-end 0)))))
+                         secs)))))
+    (message "Setting timer for \"%s\" (%S seconds)..." time secs)
+    (setq +timer-string +timer-running-string)
+    (setq +timer-timer (run-with-timer secs nil
+                                       (lambda ()
+                                         (message "%S-second timer DONE!" secs)
+                                         (setq +timer-string +timer-done-string)
+                                         (ding))))))
+
+(defun +timer-cancel ()
+  "Cancel the running timer."
+  (interactive)
+  (cond ((not +timer-timer)
+         (message "No timer found!"))
+        (t
+         (cancel-timer +timer-timer)
+         (message "Timer canceled.")))
+  (setq +timer-string nil))
+
 (provide 'acdw)
 ;;; acdw.el ends here