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;;;; term.lisp -- functions for dealing with the terminal

;; Copyright (C) 2022  Colin Okay

;; This program is free software: you can redistribute it and/or modify
;; it under the terms of the GNU Affero General Public License as
;; published by the Free Software Foundation, either version 3 of the
;; License, or (at your option) any later version.

;; 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 Affero General Public License for more details.

;; You should have received a copy of the GNU Affero General Public License
;; along with this program.  If not, see <http://www.gnu.org/licenses/>.


(in-package :oneliners.cli.term)

(defvar *term-width* nil)

(defun set-term-width ()
  ;; tput cols b/c getenv COLUMNS wasnt working on some terminals
  (setf *term-width*
        (- 
         (or (parse-integer (uiop:run-program '("tput" "cols") :output :string) :junk-allowed t)
             80)
         4)))