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comparison lisp/dired/dired-chmod.el @ 0:376386a54a3c r19-14

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Import from CVS: tag r19-14
author cvs
date Mon, 13 Aug 2007 08:45:50 +0200
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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 Free
21 ;; Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
22
23 ;;; To turn this on do:
24 ;;; (require 'dired-chmod)
25 ;;; (add-hook 'dired-after-readin-hook 'dired-permissions-highlight)
26
27 (require 'dired) ;
28
29 (defvar dired-permissions-regexp "[-r][-w][-Ssx][-r][-w][-sx][-r][-w][-xst]"
30 "Regexp matching the file permissions part of a dired line.")
31
32 (defvar dired-pre-permissions-regexp "^. [0-9 ]*[-d]"
33 "Regexp matching the preamble to file permissions part of a dired line.
34 This shouldn't match socket or symbolic link lines (which aren't editable).")
35
36 (or (find-face 'dired-face-permissions)
37 (and
38 (make-face 'dired-face-permissions)
39 (set-face-foreground 'dired-face-permissions '(color . "mediumorchid")
40 nil nil 'append)
41 (set-face-underline-p 'dired-face-permissions '((mono . t)
42 (grayscale . t)) nil
43 nil 'append)))
44
45 (defun dired-activate-extent (extent keys fn)
46 (let ((keymap (make-sparse-keymap)))
47 (while keys
48 (define-key keymap (car keys) fn)
49 (setq keys (cdr keys)))
50 (set-extent-face extent 'dired-face-permissions)
51 (set-extent-property extent 'keymap keymap)
52 (set-extent-property extent 'highlight t)
53 (set-extent-property
54 extent 'help-echo
55 "Type rsStwx to set file permissions to taste interactively.")))
56
57 (defun dired-chmod-do-chmod (state)
58 (let* ((file (dired-get-filename))
59 (operation (concat "chmod" " " state " " file))
60 (failure (apply (function dired-check-process)
61 operation "chmod" state (list file)))
62 (here (point)))
63 (dired-do-redisplay)
64 (goto-char (+ here 1))
65 (dired-make-permissions-interactive)
66 (if failure
67 (dired-log-summary
68 (message "%s: error - type W to see why." operation)))))
69
70 (defun dired-u-r ()
71 (interactive)
72 (if (equal (event-key last-command-event) ?r)
73 (dired-chmod-do-chmod "u+r")
74 (dired-chmod-do-chmod "u-r")))
75
76 (defun dired-u-w ()
77 (interactive)
78 (if (equal (event-key last-command-event) ?w)
79 (dired-chmod-do-chmod "u+w")
80 (dired-chmod-do-chmod "u-w")))
81
82 (defun dired-u-x ()
83 (interactive)
84 (let ((key (event-key last-command-event)))
85 (cond ((equal key ?s) (dired-chmod-do-chmod "u+s"))
86 ((equal key ?S) (dired-chmod-do-chmod "u+S"))
87 ((equal key ?x) (dired-chmod-do-chmod "u+x"))
88 (t (dired-chmod-do-chmod (cond ((looking-at "s") "u-s")
89 ((looking-at "S") "u-S")
90 ((looking-at "x") "u-x")
91 (t "u-x")))))))
92
93 (defun dired-g-r ()
94 (interactive)
95 (if (equal (event-key last-command-event) ?r)
96 (dired-chmod-do-chmod "g+r")
97 (dired-chmod-do-chmod "g-r")))
98
99 (defun dired-g-w ()
100 (interactive)
101 (if (equal (event-key last-command-event) ?w)
102 (dired-chmod-do-chmod "g+w")
103 (dired-chmod-do-chmod "g-w")))
104
105 (defun dired-g-x ()
106 (interactive)
107 (let ((key (event-key last-command-event)))
108 (cond ((equal key ?s) (dired-chmod-do-chmod "g+s"))
109 ((equal key ?x) (dired-chmod-do-chmod "g+x"))
110 (t (dired-chmod-do-chmod (if (looking-at "s") "g-s" "g-x"))))))
111
112 (defun dired-o-r ()
113 (interactive)
114 (if (equal (event-key last-command-event) ?r)
115 (dired-chmod-do-chmod "o+r")
116 (dired-chmod-do-chmod "o-r")))
117
118 (defun dired-o-w ()
119 (interactive)
120 (if (equal (event-key last-command-event) ?w)
121 (dired-chmod-do-chmod "o+w")
122 (dired-chmod-do-chmod "o-w")))
123
124 (defun dired-o-x ()
125 (interactive)
126 (let ((key (event-key last-command-event)))
127 (cond ((equal key ?s) (dired-chmod-do-chmod "o+s"))
128 ((equal key ?t) (dired-chmod-do-chmod "o+t"))
129 ((equal key ?x) (dired-chmod-do-chmod "o+x"))
130 (t (dired-chmod-do-chmod (cond ((looking-at "s") "o-s")
131 ((looking-at "t") "o-t")
132 ((looking-at "x") "o-x")
133 (t "o-x")))))))
134
135 (defun dired-make-permissions-interactive ()
136 (save-excursion
137 (beginning-of-line 0)
138 (if (and (re-search-forward dired-pre-permissions-regexp (end-of-line) t)
139 (looking-at dired-permissions-regexp))
140 (let* ((start (point))
141 (u-r-extent (make-extent start (+ start 1)))
142 (u-w-extent (make-extent (+ start 1) (+ start 2)))
143 (u-x-extent (make-extent (+ start 2) (+ start 3)))
144 (g-r-extent (make-extent (+ start 3) (+ start 4)))
145 (g-w-extent (make-extent (+ start 4) (+ start 5)))
146 (g-x-extent (make-extent (+ start 5) (+ start 6)))
147 (o-r-extent (make-extent (+ start 6) (+ start 7)))
148 (o-w-extent (make-extent (+ start 7) (+ start 8)))
149 (o-x-extent (make-extent (+ start 8) (+ start 9))))
150 (dired-activate-extent u-r-extent '(r space) 'dired-u-r)
151 (dired-activate-extent u-w-extent '(w space) 'dired-u-w)
152 (dired-activate-extent u-x-extent '(s S x space) 'dired-u-x)
153 (dired-activate-extent g-r-extent '(r space) 'dired-g-r)
154 (dired-activate-extent g-w-extent '(w space) 'dired-g-w)
155 (dired-activate-extent g-x-extent '(s x space) 'dired-g-x)
156 (dired-activate-extent o-r-extent '(r space) 'dired-o-r)
157 (dired-activate-extent o-w-extent '(w space) 'dired-o-w)
158 (dired-activate-extent o-x-extent '(s t x space) 'dired-o-x)))))
159
160 (defun dired-permissions-highlight ()
161 (message "Highlighting permissions...")
162 (save-excursion
163 (goto-char (point-min))
164 (while (not (eobp))
165 (and (not (eolp))
166 (dired-make-permissions-interactive))
167 (forward-line 1))
168 (message "Highlighting permissions...done")))
169
170 (provide 'dired-chmod)
171
172 ;; dired-chmod.el ends here.