emacs-config/oni-vc.el

;;; oni-vc.el --- VC configuration                   -*- lexical-binding: t; -*-

;; Copyright (C) 2019  Tom Willemse

;; Author: Tom Willemse <tom@ryuslash.org>
;; Keywords: local
;; Version: 2022.0302.154243
;; Package-Requires: (vc-p4)

;; 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/>.

;;; Commentary:

;; VC Configuration.

;;; Code:

(require 'vc)

(when (eql system-type 'windows-nt)
  (require 'vc-p4))

(defun oni-vc-maybe-checkout ()
  "Call ‘vc-checkout’ if the current buffer is read-only and I'm typing."
  (when (and buffer-read-only
             (equal this-command 'self-insert-command))
    (vc-checkout (buffer-file-name))))

;;;###autoload
(defun oni-vc-enable-auto-checkout-for-perforce ()
  "Set up a ‘pre-command-hook’ to automatically check out a file if necessary."
  (when (equal (vc-backend (buffer-file-name)) 'P4)
    (add-hook 'pre-command-hook #'oni-vc-maybe-checkout nil t)))

;;;###autoload
(add-hook 'find-file-hook 'oni-vc-enable-auto-checkout-for-perforce)

(provide 'oni-vc)
;;; oni-vc.el ends here