Split source code into different modules for cleanliness

src/main.lisp

@@ -0,0 +1,67 @@
+;;; main.lisp - 2025-02-11
+
+;; Copyright (C) 2025 Aryadev Chavali
+
+;; This program is distributed in the hope that it will be useful, but WITHOUT
+;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+;; FOR A PARTICULAR PURPOSE.  See the GNU General Public License Version 2 for
+;; details.
+
+;; You may distribute and modify this code under the terms of the GNU General
+;; Public License Version 2, which you should have received a copy of along with
+;; this program.  If not, please go to <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; Defines the entrypoint of the program, handling any input from the user and
+;; passing it into the system.
+
+;;; Code:
+
+(in-package :cantedraw.main)
+
+(fn read-input (&optional (prompt "> ")) (-> (&optional string) string)
+  (format t "~a" prompt)
+  (force-output)
+  (read-line))
+
+(fn parse-integers (input) (-> (string) list)
+  (->> input
+       uiop:split-string
+       (mapcar #'parse-integer*)
+       (remove-if #'null)))
+
+(fn read-integers () (-> nil list)
+  (->> "Enter numbers: "
+       read-input
+       parse-integers))
+
+(fn read-until-integers () (-> nil list)
+  (let ((inp (read-integers)))
+    (while (null inp)
+      (format t "Need at least one integer...~%")
+      (force-output)
+      (setq inp (read-integers)))
+    inp))
+
+(fn is-valid-hand-index (n) (-> (fixnum) boolean)
+  (and (< n 5)
+       (>= n 0)))
+
+(fn read-until-valid-integers () (-> nil list)
+  (let ((inp (remove-duplicates (read-integers))))
+    (while (not (every #'is-valid-hand-index inp))
+      (format t "Need at most 5 integers between 0 and 4...~%")
+      (force-output)
+      (setq inp (remove-duplicates (read-integers))))))
+
+(defun generate-hand ()
+  (->> (make-deck)
+       alexandria:shuffle
+       (split 5)))
+
+(defun start ()
+  (destructuring-bind (hand . rest) (generate-hand)
+    (declare (ignore rest))
+    (->> hand cardset->str (format t "Hand=[~a]~%"))
+    (force-output)))