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;;; jao-shell.el --- shell utils -*- lexical-binding: t; -*-
;; Copyright (C) 2022, 2026 jao
;; Author: jao <mail@jao.io>
;; Keywords: shell
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU 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 General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <https://www.gnu.org/licenses/>.
(require 'term)
;;; term
;;;###autoload
(defvar jao-use-vterm nil)
;;;###autoload
(defvar jao-use-eat nil)
(defvar-local jao-term--cmd nil)
(defvar-local jao-term--cmd nil)
(defun jao-term--find (cmd)
(seq-find (lambda (b)
(with-current-buffer b
(and (derived-mode-p 'eat-mode 'term-mode 'vterm-mode)
(string= (or jao-term--cmd "") cmd))))
(buffer-list)))
(declare-function vterm nil)
(declare-function vterm-mode nil)
(defvar vterm-shell)
(defvar vterm-kill-buffer-on-exit)
(defun jao-exec-in-vterm (cmd bname &optional no-kill)
(if (string-blank-p (or cmd ""))
(vterm)
(let ((vterm-shell cmd)
(vterm-kill-buffer-on-exit (not no-kill))
(buff (generate-new-buffer bname)))
(switch-to-buffer buff)
(vterm-mode))))
;;;###autoload
(defun jao-exec-in-term (cmd &optional name no-kill)
(interactive "SCommand")
(require 'eat nil t)
(cond ((and jao-use-vterm (fboundp 'jao-exec-in-vterm))
(jao-exec-in-vterm cmd name no-kill))
((and jao-use-eat (fboundp 'eat))
(let ((eat-term-name "xterm-256color"))
(with-current-buffer (eat cmd t)
(setq-local jao-term--cmd cmd))))
(t (ansi-term "bash" name)
(unless no-kill
(set-process-sentinel (get-buffer-process (current-buffer))
(lambda (process event)
(when (string= event "finished\n")
(kill-buffer (process-buffer process))))))
(setq-local jao-term--cmd cmd)
(term-send-string nil (format "%s%s\n" cmd (if no-kill "" ";exit"))))))
;;;###autoload
(defmacro jao-def-exec-in-term (name cmd &rest prelude)
`(defun ,(intern (format "jao-term-%s" name)) (&optional term)
(interactive "P")
,@prelude
(let ((jao-use-vterm (if term (not jao-use-vterm) jao-use-vterm)))
(if-let* ((b (jao-term--find ,cmd)))
(pop-to-buffer b)
(jao-exec-in-term ,cmd ,(format "*%s*" name))))))
;;; shell
(defun jao-shell-cmd-lines (cmd &rest args)
(let ((cmd (concat cmd " " (combine-and-quote-strings args))))
(split-string (shell-command-to-string cmd) "\n" t)))
(defun jao-shell-string (cmd &rest args)
(string-trim (or (car (apply #'jao-shell-cmd-lines cmd args)) "")))
(defun jao-shell-exec (command &optional wait)
(interactive
(list (read-shell-command "$ "
(if current-prefix-arg
(cons (concat " " (buffer-file-name)) 0)
""))))
(if wait
(call-process-shell-command command)
(start-process-shell-command command nil command)))
(defun jao-shell-exec* (command-or-wait &rest args)
(let ((wait (and (not (stringp command-or-wait)) command-or-wait))
(args (if (stringp command-or-wait) (cons command-or-wait args) args)))
(jao-shell-exec (combine-and-quote-strings args) wait)))
(defun jao-shell-exec-p (command) (eq 0 (jao-shell-exec command t)))
(defmacro jao-shell-def-exec (name &rest args)
`(defun ,name (&rest other-args)
(interactive)
(start-process-shell-command
,(car args)
"*jao-exec - console*"
(string-join (append (list ,@args) other-args) " "))))
(defun jao-shell-output (cmd handler)
(with-temp-buffer
(call-process-shell-command cmd nil (current-buffer))
(goto-char (point-min))
(funcall handler)))
(defun jao-shell-running-p (pr) (eq 0 (jao-shell-exec* t "pidof" pr)))
(defun jao-shell-kill-p (pr) (eq 0 (jao-shell-exec* t "killall" pr)))
(provide 'jao-shell)
;;; jao-shell.el ends here
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