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comparison lisp/dired/dired-chmod.el @ 70:131b0175ea99 r20-0b30

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author cvs
date Mon, 13 Aug 2007 09:02:59 +0200
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69:804d1389bcd6 70:131b0175ea99
1 ;;; dired-chmod.el - interactive editing of file permissions in Dired listings.
2
3 ;;; Copyright (C) 1995 Russell Ritchie, <Russell.Ritchie@gssec.bt.co.uk>
4
5 ;; Keywords: dired extensions, faces, interactive chmod
6
7 ;; This file is part of XEmacs.
8
9 ;; XEmacs is free software; you can redistribute it and/or modify it
10 ;; under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 2, or (at your option)
12 ;; any later version.
13
14 ;; XEmacs is distributed in the hope that it will be useful, but
15 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 ;; General Public License for more details.
18
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with XEmacs; see the file COPYING. If not, write to the
21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 ;; Boston, MA 02111-1307, USA.
23
24 ;;; To turn this on do:
25 ;;; (require 'dired-chmod)
26 ;;; (add-hook 'dired-after-readin-hook 'dired-permissions-highlight)
27
28 (require 'dired) ;
29
30 (defvar dired-permissions-regexp "[-r][-w][-Ssx][-r][-w][-sx][-r][-w][-xst]"
31 "Regexp matching the file permissions part of a dired line.")
32
33 (defvar dired-pre-permissions-regexp "^. [0-9 ]*[-d]"
34 "Regexp matching the preamble to file permissions part of a dired line.
35 This shouldn't match socket or symbolic link lines (which aren't editable).")
36
37 (or (find-face 'dired-face-permissions)
38 (and
39 (make-face 'dired-face-permissions)
40 (set-face-foreground 'dired-face-permissions '(color . "mediumorchid")
41 nil nil 'append)
42 (set-face-underline-p 'dired-face-permissions '((mono . t)
43 (grayscale . t)) nil
44 nil 'append)))
45
46 (defun dired-activate-extent (extent keys fn)
47 (let ((keymap (make-sparse-keymap)))
48 (while keys
49 (define-key keymap (car keys) fn)
50 (setq keys (cdr keys)))
51 (set-extent-face extent 'dired-face-permissions)
52 (set-extent-property extent 'keymap keymap)
53 (set-extent-property extent 'highlight t)
54 (set-extent-property
55 extent 'help-echo
56 "Type rsStwx to set file permissions to taste interactively.")))
57
58 (defun dired-chmod-do-chmod (state)
59 (let* ((file (dired-get-filename))
60 (operation (concat "chmod" " " state " " file))
61 (failure (apply (function dired-check-process)
62 operation "chmod" state (list file)))
63 (here (point)))
64 (dired-do-redisplay)
65 (goto-char (+ here 1))
66 (dired-make-permissions-interactive)
67 (if failure
68 (dired-log-summary
69 (message "%s: error - type W to see why." operation)))))
70
71 (defun dired-u-r ()
72 (interactive)
73 (if (equal (event-key last-command-event) ?r)
74 (dired-chmod-do-chmod "u+r")
75 (dired-chmod-do-chmod "u-r")))
76
77 (defun dired-u-w ()
78 (interactive)
79 (if (equal (event-key last-command-event) ?w)
80 (dired-chmod-do-chmod "u+w")
81 (dired-chmod-do-chmod "u-w")))
82
83 (defun dired-u-x ()
84 (interactive)
85 (let ((key (event-key last-command-event)))
86 (cond ((equal key ?s) (dired-chmod-do-chmod "u+s"))
87 ((equal key ?S) (dired-chmod-do-chmod "u+S"))
88 ((equal key ?x) (dired-chmod-do-chmod "u+x"))
89 (t (dired-chmod-do-chmod (cond ((looking-at "s") "u-s")
90 ((looking-at "S") "u-S")
91 ((looking-at "x") "u-x")
92 (t "u-x")))))))
93
94 (defun dired-g-r ()
95 (interactive)
96 (if (equal (event-key last-command-event) ?r)
97 (dired-chmod-do-chmod "g+r")
98 (dired-chmod-do-chmod "g-r")))
99
100 (defun dired-g-w ()
101 (interactive)
102 (if (equal (event-key last-command-event) ?w)
103 (dired-chmod-do-chmod "g+w")
104 (dired-chmod-do-chmod "g-w")))
105
106 (defun dired-g-x ()
107 (interactive)
108 (let ((key (event-key last-command-event)))
109 (cond ((equal key ?s) (dired-chmod-do-chmod "g+s"))
110 ((equal key ?x) (dired-chmod-do-chmod "g+x"))
111 (t (dired-chmod-do-chmod (if (looking-at "s") "g-s" "g-x"))))))
112
113 (defun dired-o-r ()
114 (interactive)
115 (if (equal (event-key last-command-event) ?r)
116 (dired-chmod-do-chmod "o+r")
117 (dired-chmod-do-chmod "o-r")))
118
119 (defun dired-o-w ()
120 (interactive)
121 (if (equal (event-key last-command-event) ?w)
122 (dired-chmod-do-chmod "o+w")
123 (dired-chmod-do-chmod "o-w")))
124
125 (defun dired-o-x ()
126 (interactive)
127 (let ((key (event-key last-command-event)))
128 (cond ((equal key ?s) (dired-chmod-do-chmod "o+s"))
129 ((equal key ?t) (dired-chmod-do-chmod "o+t"))
130 ((equal key ?x) (dired-chmod-do-chmod "o+x"))
131 (t (dired-chmod-do-chmod (cond ((looking-at "s") "o-s")
132 ((looking-at "t") "o-t")
133 ((looking-at "x") "o-x")
134 (t "o-x")))))))
135
136 ;;;###autoload
137 (defun dired-make-permissions-interactive ()
138 (save-excursion
139 (beginning-of-line 0)
140 (if (and (re-search-forward dired-pre-permissions-regexp (end-of-line) t)
141 (looking-at dired-permissions-regexp))
142 (let* ((start (point))
143 (u-r-extent (make-extent start (+ start 1)))
144 (u-w-extent (make-extent (+ start 1) (+ start 2)))
145 (u-x-extent (make-extent (+ start 2) (+ start 3)))
146 (g-r-extent (make-extent (+ start 3) (+ start 4)))
147 (g-w-extent (make-extent (+ start 4) (+ start 5)))
148 (g-x-extent (make-extent (+ start 5) (+ start 6)))
149 (o-r-extent (make-extent (+ start 6) (+ start 7)))
150 (o-w-extent (make-extent (+ start 7) (+ start 8)))
151 (o-x-extent (make-extent (+ start 8) (+ start 9))))
152 (dired-activate-extent u-r-extent '(r space) 'dired-u-r)
153 (dired-activate-extent u-w-extent '(w space) 'dired-u-w)
154 (dired-activate-extent u-x-extent '(s S x space) 'dired-u-x)
155 (dired-activate-extent g-r-extent '(r space) 'dired-g-r)
156 (dired-activate-extent g-w-extent '(w space) 'dired-g-w)
157 (dired-activate-extent g-x-extent '(s x space) 'dired-g-x)
158 (dired-activate-extent o-r-extent '(r space) 'dired-o-r)
159 (dired-activate-extent o-w-extent '(w space) 'dired-o-w)
160 (dired-activate-extent o-x-extent '(s t x space) 'dired-o-x)))))
161
162 (defun dired-permissions-highlight ()
163 (message "Highlighting permissions...")
164 (save-excursion
165 (goto-char (point-min))
166 (while (not (eobp))
167 (and (not (eolp))
168 (dired-make-permissions-interactive))
169 (forward-line 1))
170 (message "Highlighting permissions...done")))
171
172 (provide 'dired-chmod)
173
174 ;; dired-chmod.el ends here.