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[~bandali/configs] / .emacs.d / lisp / bandali-dired.el

;;; bandali-dired.el --- bandali's dired setup       -*- lexical-binding: t; -*-

;; Copyright (C) 2018-2022  Amin Bandali

;; Author: Amin Bandali <bandali@gnu.org>
;; Keywords: files

;; 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:

;; My dired setup and customizations.

;;; Code:

(with-eval-after-load 'dired
  ;; (require 'ls-lisp)
  (setq
   dired-dwim-target t
   dired-listing-switches "-alh --group-directories-first"
   dired-recent-directories-file (b/var "dired-recent-directories.el")
   ls-lisp-dirs-first t
   ls-lisp-use-insert-directory-program nil)

  (declare-function dired-dwim-target-directory "dired-aux")
  ;; easily diff 2 marked files
  ;; https://oremacs.com/2017/03/18/dired-ediff/
  (defun dired-ediff-files ()
    (interactive)
    (require 'dired-aux)
    (defvar ediff-after-quit-hook-internal)
    (let ((files (dired-get-marked-files))
          (wnd (current-window-configuration)))
      (if (<= (length files) 2)
          (let ((file1 (car files))
                (file2 (if (cdr files)
                           (cadr files)
                         (read-file-name
                          "file: "
                          (dired-dwim-target-directory)))))
            (if (file-newer-than-file-p file1 file2)
                (ediff-files file2 file1)
              (ediff-files file1 file2))
            (add-hook 'ediff-after-quit-hook-internal
                      (lambda ()
                        (setq ediff-after-quit-hook-internal nil)
                        (set-window-configuration wnd))))
        (error "no more than 2 files should be marked"))))

  (defun b/dired-start-process (program &optional args)
    "Open current file with a PROGRAM."
    ;; Shell command looks like this: "program [ARGS]... FILE" (ARGS
    ;; can be nil, so remove it).
    (declare-function dired-get-file-for-visit "dired")
    (apply #'b/start-process
           program
           (remove nil (list args (dired-get-file-for-visit)))))

  ;; local key bindings
  (define-key dired-mode-map (kbd "b") #'dired-up-directory)
  (define-key dired-mode-map (kbd "E") #'dired-ediff-files)
  (define-key dired-mode-map (kbd "e") #'dired-toggle-read-only)
  (define-key dired-mode-map (kbd "\\") #'dired-hide-details-mode)
  (define-key dired-mode-map (kbd "z")
    (lambda ()
      (interactive)
      (b/dired-start-process "zathura")))

  (require 'dired-x)
  (setq
   dired-guess-shell-alist-user
   '(("\\.pdf\\'"  "evince" "zathura" "okular")
     ("\\.doc\\'"  "libreoffice")
     ("\\.docx\\'" "libreoffice")
     ("\\.ppt\\'"  "libreoffice")
     ("\\.pptx\\'" "libreoffice")
     ("\\.xls\\'"  "libreoffice")
     ("\\.xlsx\\'" "libreoffice")
     ("\\.flac\\'" "mpv"))))
;; hooks
(add-hook 'dired-mode-hook #'dired-hide-details-mode)

(provide 'bandali-dired)
;;; bandali-dired.el ends here