;;; wdired.el --- Rename files editing their names in dired buffers -*- coding: utf-8; -*- ;; Copyright (C) 2004-2019 Free Software Foundation, Inc. ;; Filename: wdired.el ;; Author: Juan León Lahoz GarcÃa <juanleon1@gmail.com> ;; 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 ;; 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 GNU Emacs. If not, see <https://www.gnu.org/licenses/>. ;;; 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: (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) (defcustom wdired-create-parent-directories t "If non-nil, create parent directories of destination files. If non-nil, when you rename a file to a destination path within a nonexistent directory, wdired will create any parent directories necessary. When nil, attempts to rename a file into a nonexistent directory will fail." :version "26.1" :type 'boolean :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) map) "Keymap used in `wdired-mode'.") (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. \\<wdired-mode-map> 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. 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." (interactive) (error "This mode can be enabled only by `wdired-change-to-wdired-mode'")) (put 'wdired-mode 'mode-class 'special) ;;;###autoload (defun wdired-change-to-wdired-mode () "Put a Dired buffer in Writable Dired (WDired) mode. \\<wdired-mode-map> 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'." (interactive) (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) (add-function :after-while (local 'isearch-filter-predicate) #'wdired-isearch-filter-read-only) (use-local-map wdired-mode-map) (force-mode-line-update) (setq buffer-read-only nil) (dired-unadvertise default-directory) (add-hook 'kill-buffer-hook 'wdired-check-kill-buffer nil t) (add-hook 'after-change-functions 'wdired--restore-dired-filename-prop 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. (buffer-disable-undo) (wdired-preprocess-files) (if wdired-allow-to-change-permissions (wdired-preprocess-perms)) (if (and wdired-allow-to-redirect-links (fboundp 'make-symbolic-link)) (wdired-preprocess-symlinks)) (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." (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) (save-excursion (goto-char (point-min)) (let ((b-protection (point)) filename) (while (not (eobp)) (setq filename (dired-get-filename nil t)) (when (and filename (not (member (file-name-nondirectory filename) '("." "..")))) (dired-move-to-filename) ;; The rear-nonsticky property below shall ensure that text preceding ;; the filename can't be modified. (add-text-properties (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)) (forward-line)) (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 unquotep) (when unquotep (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))) file) (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) (save-excursion (setq end (line-end-position)) (beginning-of-line) (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))) ;; Don't unquote the old name, it wasn't quoted in the first place (and file (setq file (wdired-normalize-filename file (not old))))) (if (or no-dir old) file (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)) (remove-text-properties (point-min) (point-max) '(front-sticky nil rear-nonsticky nil read-only nil keymap nil))) (use-local-map dired-mode-map) (force-mode-line-update) (setq buffer-read-only t) (setq major-mode 'dired-mode) (setq mode-name "Dired") (dired-advertise) (remove-hook 'kill-buffer-hook 'wdired-check-kill-buffer t) (remove-hook 'after-change-functions 'wdired--restore-dired-filename-prop t) (set (make-local-variable 'revert-buffer-function) 'dired-revert)) (defun wdired-abort-changes () "Abort changes and return to dired mode." (interactive) (let ((inhibit-read-only t)) (erase-buffer) (insert wdired-old-content) (goto-char wdired-old-point)) (wdired-change-to-dired-mode) (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." (interactive) (let ((changes nil) (errors 0) files-deleted files-renamed some-file-names-unchanged file-old file-new tmp-value) (save-excursion (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) wdired-keep-marker-rename) (wdired-keep-marker-rename (cdr (assoc file-old wdired-old-marks))) (t nil)))) (when mark (push (cons (substitute-in-file-name file-new) mark) wdired-old-marks)))) (push (cons file-old (substitute-in-file-name file-new)) files-renamed)))) (forward-line -1))) (when files-renamed (setq errors (+ errors (wdired-do-renames files-renamed)))) ;; We have to be in wdired-mode when wdired-do-renames is executed ;; so that wdired--restore-dired-filename-prop runs, but we have ;; to change back to dired-mode before reverting the buffer to ;; avoid using wdired-revert, which changes back to wdired-mode. (wdired-change-to-dired-mode) (if changes (progn ;; 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. (revert-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))) (cond ((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)))) (t (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)) (and wdired-create-parent-directories (wdired-create-parentdirs file-new)) (dired-rename-file file-ori file-new overwrite)) (error (setq errors (1+ errors)) (dired-log "Rename `%s' to `%s' failed:\n%s\n" file-ori file-new err))))))))) errors)) (defun wdired-create-parentdirs (file-new) "Create parent directories for FILE-NEW if they don't exist." (and (not (file-exists-p (file-name-directory file-new))) (message "Creating directory for file %s" file-new) (make-directory (file-name-directory file-new) t))) (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." (interactive) (if (buffer-modified-p) (if (y-or-n-p (format "Buffer %s modified; save changes? " (current-buffer))) (wdired-finish-edit) (wdired-abort-changes)) (wdired-change-to-dired-mode) (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) (save-excursion (goto-char (point-max)) (forward-line -1) (let ((done nil) (failed t) curr-filename) (while (and (not done) (not (bobp))) (setq curr-filename (wdired-get-filename nil t)) (if (equal curr-filename filename-ori) (unwind-protect (progn (setq done t) (let ((inhibit-read-only t)) (dired-move-to-filename) (search-forward (wdired-get-filename t) nil t) (replace-match (file-name-nondirectory filename-ori) t t)) (dired-do-create-files-regexp (function dired-rename-file) "Move" 1 ".*" filename-new nil t) (setq failed nil)) ;; If user types C-g when prompted to change the file ;; name, make sure we return to dired-mode. (when failed (wdired-change-to-dired-mode))) (forward-line -1)))))) ;; marks a list of files for deletion (defun wdired-flag-for-deletion (filenames-ori) (save-excursion (goto-char (point-min)) (while (not (eobp)) (if (member (dired-get-filename nil t) filenames-ori) (dired-flag-file-deletion 1) (forward-line))))) (defun wdired-customize () "Customize WDired options." (interactive) (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." (wdired-change-to-dired-mode) (revert-buffer) (wdired-change-to-wdired-mode)) (defun wdired-check-kill-buffer () ;; FIXME: Can't we use the normal mechanism for that? --Stef (if (and (buffer-modified-p) (not (y-or-n-p "Buffer changed. Discard changes and kill buffer? "))) (error "Error"))) ;; Added to after-change-functions in wdired-change-to-wdired-mode to ;; ensure that, on editing a file name, new characters get the ;; dired-filename text property, which allows functions that look for ;; this property (e.g. dired-isearch-filenames) to work in wdired-mode ;; and also avoids an error with non-nil wdired-use-interactive-rename ;; (bug#32173). (defun wdired--restore-dired-filename-prop (beg end _len) (save-match-data (save-excursion (let ((lep (line-end-position))) (beginning-of-line) (when (re-search-forward directory-listing-before-filename-regexp lep t) (setq beg (point) end (if (or ;; If the file is a symlink, put the ;; dired-filename property only on the link ;; name. (Using (file-symlink-p ;; (dired-get-filename)) fails in ;; wdired-mode, bug#32673.) (and (re-search-backward dired-permission-flags-regexp nil t) (looking-at "l") (search-forward " -> " lep t)) ;; When dired-listing-switches includes "F" ;; or "classify", don't treat appended ;; indicator characters as part of the file ;; name (bug#34915). (and (dired-check-switches dired-actual-switches "F" "classify") (re-search-forward "[*/@|=>]$" lep t))) (goto-char (match-beginning 0)) lep)) (put-text-property beg end 'dired-filename t)))))) (defun wdired-next-line (arg) "Move down lines then position at filename or the current column. See `wdired-use-dired-vertical-movement'. Optional prefix ARG says how many lines to move; default is one line." (interactive "^p") (with-no-warnings (next-line arg)) (if (or (eq wdired-use-dired-vertical-movement t) (and wdired-use-dired-vertical-movement (< (current-column) (save-excursion (dired-move-to-filename) (current-column))))) (dired-move-to-filename))) (defun wdired-previous-line (arg) "Move up lines then position at filename or the current column. See `wdired-use-dired-vertical-movement'. Optional prefix ARG says how many lines to move; default is one line." (interactive "^p") (with-no-warnings (previous-line arg)) (if (or (eq wdired-use-dired-vertical-movement t) (and wdired-use-dired-vertical-movement (< (current-column) (save-excursion (dired-move-to-filename) (current-column))))) (dired-move-to-filename))) ;; Put the needed properties to allow the user to change links' targets (defun wdired-preprocess-symlinks () (let ((inhibit-read-only t)) (save-excursion (goto-char (point-min)) (while (not (eobp)) (if (looking-at dired-re-sym) (progn (re-search-forward " -> \\(.*\\)$") (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))) (forward-line) (beginning-of-line))))) (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 (progn (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 t)))) (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 (progn (delete-file link-from) (make-symbolic-link (substitute-in-file-name link-to-new) link-from)) (error (setq errors (1+ errors)) (dired-log "Link `%s' to `%s' failed:\n%s\n" link-from link-to-new err))))) (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 (progn (funcall command 1) (setq arg (1- arg))) (error (if (forward-word-strictly) ;; 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) map)) ;; 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) (save-excursion (goto-char (point-min)) (while (not (eobp)) (when (and (not (looking-at dired-re-sym)) (wdired-get-filename) (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) (progn (put-text-property begin end 'read-only nil) ;; make first permission bit writable (put-text-property (1- begin) begin 'rear-nonsticky '(read-only))) ;; avoid that keymap applies to text following permissions (add-text-properties (1+ begin) end `(keymap ,wdired-perm-mode-map rear-nonsticky (keymap)))) (put-text-property end (1+ end) 'end-perm t) (put-text-property begin (1+ begin) 'old-perm (match-string-no-properties 0)))) (forward-line) (beginning-of-line))))) (defun wdired-perm-allowed-in-pos (char pos) (cond ((= 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." (interactive) (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." (interactive) (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" "x")))) (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) (wdired-toggle-bit)) ;; 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)))) nperm)) ;; 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) (progn (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 "%s %s `%s' failed\n\n" dired-chmod-program perm-tmp filename))) (setq errors (1+ errors)) (dired-log "Cannot parse permission `%s' for file `%s'\n\n" perms-new filename))) (goto-char (next-single-property-change (1+ (point)) prop-wanted nil (point-max)))) (cons changes errors))) (provide 'wdired) ;; Local Variables: ;; byte-compile-dynamic: t ;; End: ;;; wdired.el ends here