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- ;;; dired-chmod.el - interactive editing of file permissions in Dired listings.
-
- ;;; Copyright (C) 1995 Russell Ritchie, <Russell.Ritchie@gssec.bt.co.uk>
-
- ;; Keywords: dired extensions, faces, interactive chmod
-
- ;; This file is part of XEmacs.
-
- ;; XEmacs 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 2, or (at your option)
- ;; any later version.
-
- ;; XEmacs 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 XEmacs; see the file COPYING. If not, write to the Free
- ;; Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
-
- ;;; To turn this on do:
- ;;; (require 'dired-chmod)
- ;;; (add-hook 'dired-after-readin-hook 'dired-permissions-highlight)
-
- (require 'dired) ;
-
- (defvar dired-permissions-regexp "[-r][-w][-Ssx][-r][-w][-sx][-r][-w][-xst]"
- "Regexp matching the file permissions part of a dired line.")
-
- (defvar dired-pre-permissions-regexp "^. [0-9 ]*[-d]"
- "Regexp matching the preamble to file permissions part of a dired line.
- This shouldn't match socket or symbolic link lines (which aren't editable).")
-
- (or (find-face 'dired-face-permissions)
- (and
- (make-face 'dired-face-permissions)
- (set-face-foreground 'dired-face-permissions '(color . "mediumorchid")
- nil nil 'append)
- (set-face-underline-p 'dired-face-permissions '((mono . t)
- (grayscale . t)) nil
- nil 'append)))
-
- (defun dired-activate-extent (extent keys fn)
- (let ((keymap (make-sparse-keymap)))
- (while keys
- (define-key keymap (car keys) fn)
- (setq keys (cdr keys)))
- (set-extent-face extent 'dired-face-permissions)
- (set-extent-property extent 'keymap keymap)
- (set-extent-property extent 'highlight t)
- (set-extent-property
- extent 'help-echo
- "Type rsStwx to set file permissions to taste interactively.")))
-
- (defun dired-chmod-do-chmod (state)
- (let* ((file (dired-get-filename))
- (operation (concat "chmod" " " state " " file))
- (failure (apply (function dired-check-process)
- operation "chmod" state (list file)))
- (here (point)))
- (dired-do-redisplay)
- (goto-char (+ here 1))
- (dired-make-permissions-interactive)
- (if failure
- (dired-log-summary
- (message "%s: error - type W to see why." operation)))))
-
- (defun dired-u-r ()
- (interactive)
- (if (equal (event-key last-command-event) ?r)
- (dired-chmod-do-chmod "u+r")
- (dired-chmod-do-chmod "u-r")))
-
- (defun dired-u-w ()
- (interactive)
- (if (equal (event-key last-command-event) ?w)
- (dired-chmod-do-chmod "u+w")
- (dired-chmod-do-chmod "u-w")))
-
- (defun dired-u-x ()
- (interactive)
- (let ((key (event-key last-command-event)))
- (cond ((equal key ?s) (dired-chmod-do-chmod "u+s"))
- ((equal key ?S) (dired-chmod-do-chmod "u+S"))
- ((equal key ?x) (dired-chmod-do-chmod "u+x"))
- (t (dired-chmod-do-chmod (cond ((looking-at "s") "u-s")
- ((looking-at "S") "u-S")
- ((looking-at "x") "u-x")
- (t "u-x")))))))
-
- (defun dired-g-r ()
- (interactive)
- (if (equal (event-key last-command-event) ?r)
- (dired-chmod-do-chmod "g+r")
- (dired-chmod-do-chmod "g-r")))
-
- (defun dired-g-w ()
- (interactive)
- (if (equal (event-key last-command-event) ?w)
- (dired-chmod-do-chmod "g+w")
- (dired-chmod-do-chmod "g-w")))
-
- (defun dired-g-x ()
- (interactive)
- (let ((key (event-key last-command-event)))
- (cond ((equal key ?s) (dired-chmod-do-chmod "g+s"))
- ((equal key ?x) (dired-chmod-do-chmod "g+x"))
- (t (dired-chmod-do-chmod (if (looking-at "s") "g-s" "g-x"))))))
-
- (defun dired-o-r ()
- (interactive)
- (if (equal (event-key last-command-event) ?r)
- (dired-chmod-do-chmod "o+r")
- (dired-chmod-do-chmod "o-r")))
-
- (defun dired-o-w ()
- (interactive)
- (if (equal (event-key last-command-event) ?w)
- (dired-chmod-do-chmod "o+w")
- (dired-chmod-do-chmod "o-w")))
-
- (defun dired-o-x ()
- (interactive)
- (let ((key (event-key last-command-event)))
- (cond ((equal key ?s) (dired-chmod-do-chmod "o+s"))
- ((equal key ?t) (dired-chmod-do-chmod "o+t"))
- ((equal key ?x) (dired-chmod-do-chmod "o+x"))
- (t (dired-chmod-do-chmod (cond ((looking-at "s") "o-s")
- ((looking-at "t") "o-t")
- ((looking-at "x") "o-x")
- (t "o-x")))))))
-
- (defun dired-make-permissions-interactive ()
- (save-excursion
- (beginning-of-line 0)
- (if (and (re-search-forward dired-pre-permissions-regexp (end-of-line) t)
- (looking-at dired-permissions-regexp))
- (let* ((start (point))
- (u-r-extent (make-extent start (+ start 1)))
- (u-w-extent (make-extent (+ start 1) (+ start 2)))
- (u-x-extent (make-extent (+ start 2) (+ start 3)))
- (g-r-extent (make-extent (+ start 3) (+ start 4)))
- (g-w-extent (make-extent (+ start 4) (+ start 5)))
- (g-x-extent (make-extent (+ start 5) (+ start 6)))
- (o-r-extent (make-extent (+ start 6) (+ start 7)))
- (o-w-extent (make-extent (+ start 7) (+ start 8)))
- (o-x-extent (make-extent (+ start 8) (+ start 9))))
- (dired-activate-extent u-r-extent '(r space) 'dired-u-r)
- (dired-activate-extent u-w-extent '(w space) 'dired-u-w)
- (dired-activate-extent u-x-extent '(s S x space) 'dired-u-x)
- (dired-activate-extent g-r-extent '(r space) 'dired-g-r)
- (dired-activate-extent g-w-extent '(w space) 'dired-g-w)
- (dired-activate-extent g-x-extent '(s x space) 'dired-g-x)
- (dired-activate-extent o-r-extent '(r space) 'dired-o-r)
- (dired-activate-extent o-w-extent '(w space) 'dired-o-w)
- (dired-activate-extent o-x-extent '(s t x space) 'dired-o-x)))))
-
- (defun dired-permissions-highlight ()
- (message "Highlighting permissions...")
- (save-excursion
- (goto-char (point-min))
- (while (not (eobp))
- (and (not (eolp))
- (dired-make-permissions-interactive))
- (forward-line 1))
- (message "Highlighting permissions...done")))
-
- (provide 'dired-chmod)
-
- ;; dired-chmod.el ends here.
-