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;;; wdired.el --- Rename files editing their names in dired buffers
;; Copyright (C) 2004-2013 Free Software Foundation, Inc.
;; Filename: wdired.el
;; Author: Juan León Lahoz García <>
;; Version: 2.0
;; Keywords: dired, environment, files, renaming
;; This file is part of GNU Emacs.
;; GNU Emacs 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.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <>.
;;; Commentary:
;; wdired.el (the "w" is for writable) provides an alternative way of
;; renaming files.
;; Have you ever wished to use C-x r t (string-rectangle), M-%
;; (query-replace), M-c (capitalize-word), etc... to change the name of
;; the files in a "dired" buffer? Now you can do this. All the power
;; of Emacs commands are available to renaming files!
;; This package provides a function that makes the filenames of a
;; dired buffer editable, by changing the buffer mode (which inhibits
;; all of the commands of dired mode). Here you can edit the names of
;; one or more files and directories, and when you press C-c C-c, the
;; renaming takes effect and you are back to dired mode.
;; Another things you can do with WDired:
;; - To move files to another directory (by typing their path,
;; absolute or relative, as a part of the new filename).
;; - To change the target of symbolic links.
;; - To change the permission bits of the filenames (in systems with a
;; working unix-alike `dired-chmod-program'). See and customize the
;; variable `wdired-allow-to-change-permissions'. To change a single
;; char (toggling between its two more usual values) you can press
;; the space bar over it or left-click the mouse. To set any char to
;; an specific value (this includes the SUID, SGID and STI bits) you
;; can use the key labeled as the letter you want. Please note that
;; permissions of the links cannot be changed in that way, because
;; the change would affect to their targets, and this would not be
;; WYSIWYG :-).
;; - To mark files for deletion, by deleting their whole filename.
;;; Usage:
;; You can edit the names of the files by typing C-x C-q or by
;; executing M-x wdired-change-to-wdired-mode. Use C-c C-c when
;; finished or C-c C-k to abort. While editing filenames, a new
;; submenu "WDired" is available at top level. You can customize the
;; behavior of this package from this menu.
;;; Change Log:
;; Google is your friend (previous versions with complete changelogs
;; were posted to gnu.emacs.sources)
;;; Code:
(defvar dired-backup-overwrite) ; Only in Emacs 20.x this is a custom var
(require 'dired)
(autoload 'dired-do-create-files-regexp "dired-aux")
(defgroup wdired nil
"Mode to rename files by editing their names in dired buffers."
:group 'dired)
(defcustom wdired-use-interactive-rename nil
"If non-nil, WDired requires confirmation before actually renaming files.
If nil, WDired doesn't require confirmation to change the file names,
and the variable `wdired-confirm-overwrite' controls whether it is ok
to overwrite files without asking."
:type 'boolean
:group 'wdired)
(defcustom wdired-confirm-overwrite t
"If nil the renames can overwrite files without asking.
This variable has no effect at all if `wdired-use-interactive-rename'
is not nil."
:type 'boolean
:group 'wdired)
(defcustom wdired-use-dired-vertical-movement nil
"If t, the \"up\" and \"down\" movement works as in Dired mode.
That is, always move the point to the beginning of the filename at line.
If `sometimes', only move to the beginning of filename if the point is
before it, and `track-eol' is non-nil. This behavior is very handy
when editing several filenames.
If nil, \"up\" and \"down\" movement is done as in any other buffer."
:type '(choice (const :tag "As in any other mode" nil)
(const :tag "Smart cursor placement" sometimes)
(other :tag "As in dired mode" t))
:group 'wdired)
(defcustom wdired-allow-to-redirect-links t
"If non-nil, the target of the symbolic links are editable.
In systems without symbolic links support, this variable has no effect
at all."
:type 'boolean
:group 'wdired)
(defcustom wdired-allow-to-change-permissions nil
"If non-nil, the permissions bits of the files are editable.
If t, to change a single bit, put the cursor over it and press the
space bar, or left click over it. You can also hit the letter you want
to set: if this value is allowed, the character in the buffer will be
changed. Anyway, the point is advanced one position, so, for example,
you can keep the <x> key pressed to give execution permissions to
everybody to that file.
If `advanced', the bits are freely editable. You can use
`string-rectangle', `query-replace', etc. You can put any value (even
newlines), but if you want your changes to be useful, you better put a
intelligible value.
Anyway, the real change of the permissions is done by the external
program `dired-chmod-program', which must exist."
:type '(choice (const :tag "Not allowed" nil)
(const :tag "Toggle/set bits" t)
(other :tag "Bits freely editable" advanced))
:group 'wdired)
(defcustom wdired-keep-marker-rename t
;; Use t as default so that renamed files "take their markers with them".
"Controls marking of files renamed in WDired.
If t, files keep their previous marks when they are renamed.
If a character, renamed files (whether previously marked or not)
are afterward marked with that character.
This option affects only files renamed by `wdired-finish-edit'.
See `dired-keep-marker-rename' if you want to do the same for files
renamed by `dired-do-rename' and `dired-do-rename-regexp'."
:type '(choice (const :tag "Keep" t)
(character :tag "Mark" :value ?R))
:version "24.3"
:group 'wdired)
(defvar wdired-mode-map
(let ((map (make-sparse-keymap)))
(define-key map "\C-x\C-s" 'wdired-finish-edit)
(define-key map "\C-c\C-c" 'wdired-finish-edit)
(define-key map "\C-c\C-k" 'wdired-abort-changes)
(define-key map "\C-c\C-[" 'wdired-abort-changes)
(define-key map "\C-x\C-q" 'wdired-exit)
(define-key map "\C-m" 'ignore)
(define-key map "\C-j" 'ignore)
(define-key map "\C-o" 'ignore)
(define-key map [up] 'wdired-previous-line)
(define-key map "\C-p" 'wdired-previous-line)
(define-key map [down] 'wdired-next-line)
(define-key map "\C-n" 'wdired-next-line)
(define-key map [menu-bar wdired]
(cons "WDired" (make-sparse-keymap "WDired")))
(define-key map [menu-bar wdired wdired-customize]
'("Options" . wdired-customize))
(define-key map [menu-bar wdired dashes]
(define-key map [menu-bar wdired wdired-abort-changes]
'(menu-item "Abort Changes" wdired-abort-changes
:help "Abort changes and return to dired mode"))
(define-key map [menu-bar wdired wdired-finish-edit]
'("Commit Changes" . wdired-finish-edit))
(define-key map [remap upcase-word] 'wdired-upcase-word)
(define-key map [remap capitalize-word] 'wdired-capitalize-word)
(define-key map [remap downcase-word] 'wdired-downcase-word)
(defvar wdired-mode-hook nil
"Hooks run when changing to WDired mode.")
;; Local variables (put here to avoid compilation gripes)
(defvar wdired-col-perm) ;; Column where the permission bits start
(defvar wdired-old-content)
(defvar wdired-old-point)
(defvar wdired-old-marks)
(defun wdired-mode ()
"Writable Dired (WDired) mode.
In WDired mode, you can edit the names of the files in the
buffer, the target of the links, and the permission bits of the
Type \\[wdired-finish-edit] to exit WDired mode, returning to
Dired mode, and make your edits \"take effect\" by modifying the
file and directory names, link targets, and/or file permissions
on disk. If you delete the filename of a file, it is flagged for
deletion in the Dired buffer.
Type \\[wdired-abort-changes] to abort your edits and exit WDired mode.
Type \\[customize-group] RET wdired to customize WDired behavior.
The only editable texts in a WDired buffer are filenames,
symbolic link targets, and filenames permission."
(error "This mode can be enabled only by `wdired-change-to-wdired-mode'"))
(put 'wdired-mode 'mode-class 'special)
(defun wdired-change-to-wdired-mode ()
"Put a Dired buffer in Writable Dired (WDired) mode.
In WDired mode, you can edit the names of the files in the
buffer, the target of the links, and the permission bits of the
files. After typing \\[wdired-finish-edit], Emacs modifies the files and
directories to reflect your edits.
See `wdired-mode'."
(unless (eq major-mode 'dired-mode)
(error "Not a Dired buffer"))
(set (make-local-variable 'wdired-old-content)
(buffer-substring (point-min) (point-max)))
(set (make-local-variable 'wdired-old-marks)
(dired-remember-marks (point-min) (point-max)))
(set (make-local-variable 'wdired-old-point) (point))
(set (make-local-variable 'query-replace-skip-read-only) t)
(set (make-local-variable 'isearch-filter-predicate)
(use-local-map wdired-mode-map)
(setq buffer-read-only nil)
(dired-unadvertise default-directory)
(add-hook 'kill-buffer-hook 'wdired-check-kill-buffer nil t)
(setq major-mode 'wdired-mode)
(setq mode-name "Editable Dired")
(setq revert-buffer-function 'wdired-revert)
;; I temp disable undo for performance: since I'm going to clear the
;; undo list, it can save more than a 9% of time with big
;; directories because setting properties modify the undo-list.
(if wdired-allow-to-change-permissions
(if (and wdired-allow-to-redirect-links (fboundp 'make-symbolic-link))
(buffer-enable-undo) ; Performance hack. See above.
(set-buffer-modified-p nil)
(setq buffer-undo-list nil)
(run-mode-hooks 'wdired-mode-hook)
(message "%s" (substitute-command-keys
"Press \\[wdired-finish-edit] when finished \
or \\[wdired-abort-changes] to abort changes")))
(defun wdired-isearch-filter-read-only (beg end)
"Skip matches that have a read-only property."
(and (isearch-filter-visible beg end)
(not (text-property-not-all (min beg end) (max beg end)
'read-only nil))))
;; Protect the buffer so only the filenames can be changed, and put
;; properties so filenames (old and new) can be easily found.
(defun wdired-preprocess-files ()
(put-text-property (point-min) (1+ (point-min))'front-sticky t)
(goto-char (point-min))
(let ((b-protection (point))
(while (not (eobp))
(setq filename (dired-get-filename nil t))
(when (and filename
(not (member (file-name-nondirectory filename) '("." ".."))))
;; The rear-nonsticky property below shall ensure that text preceding
;; the filename can't be modified.
(1- (point)) (point) `(old-name ,filename rear-nonsticky (read-only)))
(put-text-property b-protection (point) 'read-only t)
(setq b-protection (dired-move-to-end-of-filename t))
(put-text-property (point) (1+ (point)) 'end-name t))
(put-text-property b-protection (point-max) 'read-only t))))
;; This code is a copy of some dired-get-filename lines.
(defsubst wdired-normalize-filename (file)
(setq file
;; FIXME: shouldn't we check for a `b' argument or somesuch before
;; doing such unquoting? --Stef
(read (concat
"\"" (replace-regexp-in-string
"\\([^\\]\\|\\`\\)\"" "\\1\\\\\"" file)
(and file buffer-file-coding-system
(not file-name-coding-system)
(not default-file-name-coding-system)
(setq file (encode-coding-string file buffer-file-coding-system)))
(defun wdired-get-filename (&optional no-dir old)
"Return the filename at line.
Similar to `dired-get-filename' but it doesn't rely on regexps. It
relies on WDired buffer's properties. Optional arg NO-DIR with value
non-nil means don't include directory. Optional arg OLD with value
non-nil means return old filename."
;; FIXME: Use dired-get-filename's new properties.
(let (beg end file)
(setq end (line-end-position))
(setq beg (next-single-property-change (point) 'old-name nil end))
(unless (eq beg end)
(if old
(setq file (get-text-property beg 'old-name))
;; In the following form changed `(1+ beg)' to `beg' so that
;; the filename end is found even when the filename is empty.
;; Fixes error and spurious newlines when marking files for
;; deletion.
(setq end (next-single-property-change beg 'end-name))
(setq file (buffer-substring-no-properties (1+ beg) end)))
(and file (setq file (wdired-normalize-filename file))))
(if (or no-dir old)
(and file (> (length file) 0)
(concat (dired-current-directory) file))))))
(defun wdired-change-to-dired-mode ()
"Change the mode back to dired."
(or (eq major-mode 'wdired-mode)
(error "Not a Wdired buffer"))
(let ((inhibit-read-only t))
(point-min) (point-max)
'(front-sticky nil rear-nonsticky nil read-only nil keymap nil)))
(use-local-map dired-mode-map)
(setq buffer-read-only t)
(setq major-mode 'dired-mode)
(setq mode-name "Dired")
(remove-hook 'kill-buffer-hook 'wdired-check-kill-buffer t)
(set (make-local-variable 'revert-buffer-function) 'dired-revert))
(defun wdired-abort-changes ()
"Abort changes and return to dired mode."
(let ((inhibit-read-only t))
(insert wdired-old-content)
(goto-char wdired-old-point))
(set-buffer-modified-p nil)
(setq buffer-undo-list nil)
(message "Changes aborted"))
(defun wdired-finish-edit ()
"Actually rename files based on your editing in the Dired buffer."
(let ((changes nil)
(errors 0)
file-old file-new tmp-value)
(when (and wdired-allow-to-redirect-links
(fboundp 'make-symbolic-link))
(setq tmp-value (wdired-do-symlink-changes))
(setq errors (cdr tmp-value))
(setq changes (car tmp-value)))
(when (and wdired-allow-to-change-permissions
(boundp 'wdired-col-perm)) ; could have been changed
(setq tmp-value (wdired-do-perm-changes))
(setq errors (+ errors (cdr tmp-value)))
(setq changes (or changes (car tmp-value))))
(goto-char (point-max))
(while (not (bobp))
(setq file-old (wdired-get-filename nil t))
(when file-old
(setq file-new (wdired-get-filename))
(if (equal file-new file-old)
(setq some-file-names-unchanged t)
(setq changes t)
(if (not file-new) ;empty filename!
(push file-old files-deleted)
(when wdired-keep-marker-rename
(let ((mark (cond ((integerp wdired-keep-marker-rename)
(cdr (assoc file-old wdired-old-marks)))
(t nil))))
(when mark
(push (cons (substitute-in-file-name file-new) mark)
(push (cons file-old (substitute-in-file-name file-new))
(forward-line -1)))
(when files-renamed
(setq errors (+ errors (wdired-do-renames files-renamed))))
(if changes
;; If we are displaying a single file (rather than the
;; contents of a directory), change dired-directory if that
;; file was renamed. (This ought to be generalized to
;; handle the multiple files case, but that's less trivial).
(when (and (stringp dired-directory)
(not (file-directory-p dired-directory))
(null some-file-names-unchanged)
(= (length files-renamed) 1))
(setq dired-directory (cdr (car files-renamed))))
;; Re-sort the buffer.
(let ((inhibit-read-only t))
(dired-mark-remembered wdired-old-marks)))
(let ((inhibit-read-only t))
(remove-text-properties (point-min) (point-max)
'(old-name nil end-name nil old-link nil
end-link nil end-perm nil
old-perm nil perm-changed nil))
(message "(No changes to be performed)")))
(when files-deleted
(wdired-flag-for-deletion files-deleted))
(when (> errors 0)
(dired-log-summary (format "%d rename actions failed" errors) nil)))
(set-buffer-modified-p nil)
(setq buffer-undo-list nil))
(defun wdired-do-renames (renames)
"Perform RENAMES in parallel."
(let ((residue ())
(progress nil)
(errors 0)
(overwrite (or (not wdired-confirm-overwrite) 1)))
(while (or renames
;; We've done one round through the renames, we have found
;; some residue, but we also made some progress, so maybe
;; some of the residue were resolved: try again.
(prog1 (setq renames residue)
(setq progress nil)
(setq residue nil)))
(let* ((rename (pop renames))
(file-new (cdr rename)))
((rassoc file-new renames)
(error "Trying to rename 2 files to the same name"))
((assoc file-new renames)
;; Renaming to a file name that already exists but will itself be
;; renamed as well. Let's wait until that one gets renamed.
(push rename residue))
((and (assoc file-new residue)
;; Make sure the file really exists: if it doesn't it's
;; not really a conflict. It might be a temp-file generated
;; specifically to break a circular renaming.
(file-exists-p file-new))
;; Renaming to a file name that already exists, needed to be renamed,
;; but whose renaming could not be performed right away.
(if (or progress renames)
;; There's still a chance the conflict will be resolved.
(push rename residue)
;; We have not made any progress and we've reached the end of
;; the renames, so we really have a circular conflict, and we
;; have to forcefully break the cycle.
(message "Circular renaming: using temporary file name")
(let ((tmp (make-temp-name file-new)))
(push (cons (car rename) tmp) renames)
(push (cons tmp file-new) residue))))
(setq progress t)
(let ((file-ori (car rename)))
(if wdired-use-interactive-rename
(wdired-search-and-rename file-ori file-new)
;; If dired-rename-file autoloads dired-aux while
;; dired-backup-overwrite is locally bound,
;; dired-backup-overwrite won't be initialized.
;; So we must ensure dired-aux is loaded.
(require 'dired-aux)
(condition-case err
(let ((dired-backup-overwrite nil))
(dired-rename-file file-ori file-new
(setq errors (1+ errors))
(dired-log (concat "Rename `" file-ori "' to `"
file-new "' failed:\n%s\n")
(defun wdired-exit ()
"Exit wdired and return to dired mode.
Just return to dired mode if there are no changes. Otherwise,
ask a yes-or-no question whether to save or cancel changes,
and proceed depending on the answer."
(if (buffer-modified-p)
(if (y-or-n-p (format "Buffer %s modified; save changes? "
(set-buffer-modified-p nil)
(setq buffer-undo-list nil)
(message "(No changes need to be saved)")))
;; Rename a file, searching it in a modified dired buffer, in order
;; to be able to use `dired-do-create-files-regexp' and get its
;; "benefits".
(defun wdired-search-and-rename (filename-ori filename-new)
(goto-char (point-max))
(forward-line -1)
(let ((done nil)
(while (and (not done) (not (bobp)))
(setq curr-filename (wdired-get-filename nil t))
(if (equal curr-filename filename-ori)
(setq done t)
(let ((inhibit-read-only t))
(search-forward (wdired-get-filename t) nil t)
(replace-match (file-name-nondirectory filename-ori) t t))
(function dired-rename-file)
"Move" 1 ".*" filename-new nil t))
(forward-line -1))))))
;; marks a list of files for deletion
(defun wdired-flag-for-deletion (filenames-ori)
(goto-char (point-min))
(while (not (eobp))
(if (member (dired-get-filename nil t) filenames-ori)
(dired-flag-file-deletion 1)
(defun wdired-customize ()
"Customize WDired options."
(customize-apropos "wdired" 'groups))
(defun wdired-revert (&optional _arg _noconfirm)
"Discard changes in the buffer and update it based on changes on disk.
Optional arguments are ignored."
(defun wdired-check-kill-buffer ()
;; FIXME: Can't we use the normal mechanism for that? --Stef
(if (and
(not (y-or-n-p "Buffer changed. Discard changes and kill buffer? ")))
(error "Error")))
(defun wdired-next-line (arg)
"Move down lines then position at filename or the current column.
See `wdired-use-dired-vertical-movement'. Optional prefix ARG
says how many lines to move; default is one line."
(interactive "p")
(with-no-warnings (next-line arg))
(if (or (eq wdired-use-dired-vertical-movement t)
(and wdired-use-dired-vertical-movement
(< (current-column)
(save-excursion (dired-move-to-filename)
(defun wdired-previous-line (arg)
"Move up lines then position at filename or the current column.
See `wdired-use-dired-vertical-movement'. Optional prefix ARG
says how many lines to move; default is one line."
(interactive "p")
(with-no-warnings (previous-line arg))
(if (or (eq wdired-use-dired-vertical-movement t)
(and wdired-use-dired-vertical-movement
(< (current-column)
(save-excursion (dired-move-to-filename)
;; Put the needed properties to allow the user to change links' targets
(defun wdired-preprocess-symlinks ()
(let ((inhibit-read-only t))
(goto-char (point-min))
(while (not (eobp))
(if (looking-at dired-re-sym)
(re-search-forward " -> \\(.*\\)$")
(put-text-property (- (match-beginning 1) 2)
(1- (match-beginning 1)) 'old-link
(match-string-no-properties 1))
(put-text-property (match-end 1) (1+ (match-end 1)) 'end-link t)
(put-text-property (1- (match-beginning 1))
(match-beginning 1)
'rear-nonsticky '(read-only))
(put-text-property (match-beginning 1)
(match-end 1) 'read-only nil)))
(defun wdired-get-previous-link (&optional old move)
"Return the next symlink target.
If OLD, return the old target. If MOVE, move point before it."
(let (beg end target)
(setq beg (previous-single-property-change (point) 'old-link nil))
(if beg
(if old
(setq target (get-text-property (1- beg) 'old-link))
(setq end (next-single-property-change beg 'end-link))
(setq target (buffer-substring-no-properties (1+ beg) end)))
(if move (goto-char (1- beg)))))
(and target (wdired-normalize-filename target))))
(declare-function make-symbolic-link "fileio.c")
;; Perform the changes in the target of the changed links.
(defun wdired-do-symlink-changes ()
(let ((changes nil)
(errors 0)
link-to-ori link-to-new link-from)
(goto-char (point-max))
(while (setq link-to-new (wdired-get-previous-link))
(setq link-to-ori (wdired-get-previous-link t t))
(setq link-from (wdired-get-filename nil t))
(unless (equal link-to-new link-to-ori)
(setq changes t)
(if (equal link-to-new "") ;empty filename!
(setq link-to-new "/dev/null"))
(condition-case err
(delete-file link-from)
(substitute-in-file-name link-to-new) link-from))
(setq errors (1+ errors))
(dired-log (concat "Link `" link-from "' to `"
link-to-new "' failed:\n%s\n")
(cons changes errors)))
;; Perform a "case command" skipping read-only words.
(defun wdired-xcase-word (command arg)
(if (< arg 0)
(funcall command arg)
(while (> arg 0)
(condition-case nil
(funcall command 1)
(setq arg (1- arg)))
(if (forward-word)
;; Skip any non-word characters to avoid triggering a read-only
;; error which would cause skipping the next word characters too.
(skip-syntax-forward "^w")
(setq arg 0)))))))
(defun wdired-downcase-word (arg)
"WDired version of `downcase-word'.
Like original function but it skips read-only words."
(interactive "p")
(wdired-xcase-word 'downcase-word arg))
(defun wdired-upcase-word (arg)
"WDired version of `upcase-word'.
Like original function but it skips read-only words."
(interactive "p")
(wdired-xcase-word 'upcase-word arg))
(defun wdired-capitalize-word (arg)
"WDired version of `capitalize-word'.
Like original function but it skips read-only words."
(interactive "p")
(wdired-xcase-word 'capitalize-word arg))
;; The following code deals with changing the access bits (or
;; permissions) of the files.
(defvar wdired-perm-mode-map
(let ((map (make-sparse-keymap)))
(define-key map " " 'wdired-toggle-bit)
(define-key map "r" 'wdired-set-bit)
(define-key map "w" 'wdired-set-bit)
(define-key map "x" 'wdired-set-bit)
(define-key map "-" 'wdired-set-bit)
(define-key map "S" 'wdired-set-bit)
(define-key map "s" 'wdired-set-bit)
(define-key map "T" 'wdired-set-bit)
(define-key map "t" 'wdired-set-bit)
(define-key map "s" 'wdired-set-bit)
(define-key map "l" 'wdired-set-bit)
(define-key map [down-mouse-1] 'wdired-mouse-toggle-bit)
;; Put a keymap property to the permission bits of the files, and store the
;; original name and permissions as a property
(defun wdired-preprocess-perms ()
(let ((inhibit-read-only t))
(set (make-local-variable 'wdired-col-perm) nil)
(goto-char (point-min))
(while (not (eobp))
(when (and (not (looking-at dired-re-sym))
(re-search-forward dired-re-perms (line-end-position) 'eol))
(let ((begin (match-beginning 0))
(end (match-end 0)))
(unless wdired-col-perm
(setq wdired-col-perm (- (current-column) 9)))
(if (eq wdired-allow-to-change-permissions 'advanced)
(put-text-property begin end 'read-only nil)
;; make first permission bit writable
(1- begin) begin 'rear-nonsticky '(read-only)))
;; avoid that keymap applies to text following permissions
(1+ begin) end
`(keymap ,wdired-perm-mode-map rear-nonsticky (keymap))))
(put-text-property end (1+ end) 'end-perm t)
begin (1+ begin) 'old-perm (match-string-no-properties 0))))
(defun wdired-perm-allowed-in-pos (char pos)
((= char ?-) t)
((= char ?r) (= (% pos 3) 0))
((= char ?w) (= (% pos 3) 1))
((= char ?x) (= (% pos 3) 2))
((memq char '(?s ?S)) (memq pos '(2 5)))
((memq char '(?t ?T)) (= pos 8))
((= char ?l) (= pos 5))))
(defun wdired-set-bit ()
"Set a permission bit character."
(if (wdired-perm-allowed-in-pos last-command-event
(- (current-column) wdired-col-perm))
(let ((new-bit (char-to-string last-command-event))
(inhibit-read-only t)
(pos-prop (- (point) (- (current-column) wdired-col-perm))))
(put-text-property 0 1 'keymap wdired-perm-mode-map new-bit)
(put-text-property 0 1 'read-only t new-bit)
(insert new-bit)
(delete-char 1)
(put-text-property (1- pos-prop) pos-prop 'perm-changed t)
(put-text-property (1- (point)) (point) 'rear-nonsticky '(keymap)))
(forward-char 1)))
(defun wdired-toggle-bit ()
"Toggle the permission bit at point."
(let ((inhibit-read-only t)
(new-bit "-")
(pos-prop (- (point) (- (current-column) wdired-col-perm))))
(if (eq (char-after (point)) ?-)
(setq new-bit
(if (= (% (- (current-column) wdired-col-perm) 3) 0) "r"
(if (= (% (- (current-column) wdired-col-perm) 3) 1) "w"
(put-text-property 0 1 'keymap wdired-perm-mode-map new-bit)
(put-text-property 0 1 'read-only t new-bit)
(insert new-bit)
(delete-char 1)
(put-text-property (1- pos-prop) pos-prop 'perm-changed t)
(put-text-property (1- (point)) (point) 'rear-nonsticky '(keymap))))
(defun wdired-mouse-toggle-bit (event)
"Toggle the permission bit that was left clicked."
(interactive "e")
(mouse-set-point event)
;; Allowed chars for 4000 bit are Ss in position 3
;; Allowed chars for 2000 bit are Ssl in position 6
;; Allowed chars for 1000 bit are Tt in position 9
(defun wdired-perms-to-number (perms)
(let ((nperm 0777))
(if (= (elt perms 1) ?-) (setq nperm (- nperm 400)))
(if (= (elt perms 2) ?-) (setq nperm (- nperm 200)))
(let ((p-bit (elt perms 3)))
(if (memq p-bit '(?- ?S)) (setq nperm (- nperm 100)))
(if (memq p-bit '(?s ?S)) (setq nperm (+ nperm 4000))))
(if (= (elt perms 4) ?-) (setq nperm (- nperm 40)))
(if (= (elt perms 5) ?-) (setq nperm (- nperm 20)))
(let ((p-bit (elt perms 6)))
(if (memq p-bit '(?- ?S ?l)) (setq nperm (- nperm 10)))
(if (memq p-bit '(?s ?S ?l)) (setq nperm (+ nperm 2000))))
(if (= (elt perms 7) ?-) (setq nperm (- nperm 4)))
(if (= (elt perms 8) ?-) (setq nperm (- nperm 2)))
(let ((p-bit (elt perms 9)))
(if (memq p-bit '(?- ?T)) (setq nperm (- nperm 1)))
(if (memq p-bit '(?t ?T)) (setq nperm (+ nperm 1000))))
;; Perform the changes in the permissions of the files that have
;; changed.
(defun wdired-do-perm-changes ()
(let ((changes nil)
(errors 0)
(prop-wanted (if (eq wdired-allow-to-change-permissions 'advanced)
'old-perm 'perm-changed))
filename perms-ori perms-new perm-tmp)
(goto-char (next-single-property-change (point-min) prop-wanted
nil (point-max)))
(while (not (eobp))
(setq perms-ori (get-text-property (point) 'old-perm))
(setq perms-new (buffer-substring-no-properties
(point) (next-single-property-change (point) 'end-perm)))
(unless (equal perms-ori perms-new)
(setq changes t)
(setq filename (wdired-get-filename nil t))
(if (= (length perms-new) 10)
(setq perm-tmp
(int-to-string (wdired-perms-to-number perms-new)))
(unless (equal 0 (process-file dired-chmod-program
nil nil nil perm-tmp filename))
(setq errors (1+ errors))
(dired-log (concat dired-chmod-program " " perm-tmp
" `" filename "' failed\n\n"))))
(setq errors (1+ errors))
(dired-log (concat "Cannot parse permission `" perms-new
"' for file `" filename "'\n\n"))))
(goto-char (next-single-property-change (1+ (point)) prop-wanted
nil (point-max))))
(cons changes errors)))
(provide 'wdired)
;; Local Variables:
;; coding: latin-1
;; byte-compile-dynamic: t
;; End:
;;; wdired.el ends here
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