\f
;; Trashcan handling.
-(defcustom trash-directory (convert-standard-filename "~/.Trash")
+(defcustom trash-directory nil
"Directory for `move-file-to-trash' to move files and directories to.
-This directory is only used when the function `system-move-file-to-trash' is
-not defined. Relative paths are interpreted relative to `default-directory'.
-See also `delete-by-moving-to-trash'."
+This directory is only used when the function `system-move-file-to-trash'
+is not defined.
+Relative paths are interpreted relative to `default-directory'.
+If the value is nil, Emacs uses a freedesktop.org-style trashcan."
:type 'directory
:group 'auto-save
- :version "23.1")
+ :version "23.2")
+
+(defvar trash--hexify-table)
(declare-function system-move-file-to-trash "w32fns.c" (filename))
(defun move-file-to-trash (filename)
- "Move file (or directory) name FILENAME to the trash.
-This function is called by `delete-file' and `delete-directory' when
-`delete-by-moving-to-trash' is non-nil. On platforms that define
-`system-move-file-to-trash', that function is used to move FILENAME to the
-system trash, otherwise FILENAME is moved to `trash-directory'.
-Returns nil on success."
+ "Move the file (or directory) named FILENAME to the trash.
+When `delete-by-moving-to-trash' is non-nil, this function is
+called by `delete-file' and `delete-directory' instead of
+deleting files outright.
+
+If the function `system-move-file-to-trash' is defined, call it
+ with FILENAME as an argument.
+Otherwise, if `trash-directory' is non-nil, move FILENAME to that
+ directory.
+Otherwise, trash FILENAME using the freedesktop.org conventions,
+ like the GNOME, KDE and XFCE desktop environments. Emacs only
+ moves files to \"home trash\", ignoring per-volume trashcans."
(interactive "fMove file to trash: ")
- (cond
- ((fboundp 'system-move-file-to-trash)
- (system-move-file-to-trash filename))
- (t
- (let* ((trash-dir (expand-file-name trash-directory))
- (fn (directory-file-name (expand-file-name filename)))
- (fn-nondir (file-name-nondirectory fn))
- (new-fn (expand-file-name fn-nondir trash-dir)))
- (or (file-directory-p trash-dir)
- (make-directory trash-dir t))
- (and (file-exists-p new-fn)
- ;; make new-fn unique.
- ;; example: "~/.Trash/abc.txt" -> "~/.Trash/abc.txt.~1~"
- (let ((version-control t)
- (backup-directory-alist nil))
- (setq new-fn (car (find-backup-file-name new-fn)))))
- ;; stop processing if fn is same or parent directory of trash-dir.
- (and (string-match fn trash-dir)
- (error "Filename `%s' is same or parent directory of trash-directory"
- filename))
- (let ((delete-by-moving-to-trash nil))
- (rename-file fn new-fn))))))
+ (cond (trash-directory
+ ;; If `trash-directory' is non-nil, move the file there.
+ (let* ((trash-dir (expand-file-name trash-directory))
+ (fn (directory-file-name (expand-file-name filename)))
+ (new-fn (expand-file-name (file-name-nondirectory fn)
+ trash-dir)))
+ ;; We can't trash a parent directory of trash-directory.
+ (if (string-match fn trash-dir)
+ (error "Trash directory `%s' is a subdirectory of `%s'"
+ trash-dir filename))
+ (unless (file-directory-p trash-dir)
+ (make-directory trash-dir t))
+ ;; Ensure that the trashed file-name is unique.
+ (if (file-exists-p new-fn)
+ (let ((version-control t)
+ (backup-directory-alist nil))
+ (setq new-fn (car (find-backup-file-name new-fn)))))
+ (let (delete-by-moving-to-trash)
+ (rename-file fn new-fn))))
+ ;; If `system-move-file-to-trash' is defined, use it.
+ ((fboundp 'system-move-file-to-trash)
+ (system-move-file-to-trash filename))
+ ;; Otherwise, use the freedesktop.org method, as specified at
+ ;; http://freedesktop.org/wiki/Specifications/trash-spec
+ (t
+ (let* ((xdg-data-dir
+ (directory-file-name
+ (expand-file-name "Trash"
+ (or (getenv "XDG_DATA_HOME")
+ "~/.local/share"))))
+ (trash-files-dir (expand-file-name "files" xdg-data-dir))
+ (trash-info-dir (expand-file-name "info" xdg-data-dir))
+ (fn (directory-file-name (expand-file-name filename))))
+
+ ;; Check if we have permissions to delete.
+ (unless (file-writable-p (directory-file-name
+ (file-name-directory fn)))
+ (error "Cannot move %s to trash: Permission denied" filename))
+ ;; The trashed file cannot be the trash dir or its parent.
+ (if (string-match fn trash-files-dir)
+ (error "The trash directory %s is a subdirectory of %s"
+ trash-files-dir filename))
+ (if (string-match fn trash-info-dir)
+ (error "The trash directory %s is a subdirectory of %s"
+ trash-info-dir filename))
+
+ ;; Ensure that the trash directory exists; otherwise, create it.
+ (let ((saved-default-file-modes (default-file-modes)))
+ (set-default-file-modes ?\700)
+ (unless (file-exists-p trash-files-dir)
+ (make-directory trash-files-dir t))
+ (unless (file-exists-p trash-info-dir)
+ (make-directory trash-info-dir t))
+ (set-default-file-modes saved-default-file-modes))
+
+ ;; Try to move to trash with .trashinfo undo information
+ (save-excursion
+ (with-temp-buffer
+ (set-buffer-file-coding-system 'utf-8-unix)
+ (insert "[Trash Info]\nPath=")
+ ;; Perform url-encoding on FN. For compatibility with
+ ;; other programs (e.g. XFCE Thunar), allow literal "/"
+ ;; for path separators.
+ (unless (boundp 'trash--hexify-table)
+ (setq trash--hexify-table (make-vector 256 nil))
+ (let ((unreserved-chars
+ (list ?/ ?a ?b ?c ?d ?e ?f ?g ?h ?i ?j ?k ?l ?m
+ ?n ?o ?p ?q ?r ?s ?t ?u ?v ?w ?x ?y ?z ?A
+ ?B ?C ?D ?E ?F ?G ?H ?I ?J ?K ?L ?M ?N ?O
+ ?P ?Q ?R ?S ?T ?U ?V ?W ?X ?Y ?Z ?0 ?1 ?2
+ ?3 ?4 ?5 ?6 ?7 ?8 ?9 ?- ?_ ?. ?! ?~ ?* ?'
+ ?\( ?\))))
+ (dotimes (byte 256)
+ (aset trash--hexify-table byte
+ (if (memq byte unreserved-chars)
+ (char-to-string byte)
+ (format "%%%02x" byte))))))
+ (mapc (lambda (byte)
+ (insert (aref trash--hexify-table byte)))
+ (if (multibyte-string-p fn)
+ (encode-coding-string fn 'utf-8)
+ fn))
+ (insert "\nDeletionDate="
+ (format-time-string "%Y-%m-%dT%T")
+ "\n")
+
+ ;; Attempt to make .trashinfo file, trying up to 5
+ ;; times. The .trashinfo file is opened with O_EXCL,
+ ;; as per trash-spec 0.7, even if that can be a problem
+ ;; on old NFS versions...
+ (let* ((tries 5)
+ (base-fn (expand-file-name
+ (file-name-nondirectory fn)
+ trash-files-dir))
+ (new-fn base-fn)
+ success info-fn)
+ (while (> tries 0)
+ (setq info-fn (expand-file-name
+ (concat (file-name-nondirectory new-fn)
+ ".trashinfo")
+ trash-info-dir))
+ (unless (condition-case nil
+ (progn
+ (write-region nil nil info-fn nil
+ 'quiet info-fn 'excl)
+ (setq tries 0 success t))
+ (file-already-exists nil))
+ (setq tries (1- tries))
+ ;; Uniqify new-fn. (Some file managers do not
+ ;; like Emacs-style backup file names---e.g. bug
+ ;; 170956 in Konqueror bug tracker.)
+ (setq new-fn (make-temp-name (concat base-fn "_")))))
+ (unless success
+ (error "Cannot move %s to trash: Lock failed" filename))
+
+ ;; Finally, try to move the file to the trashcan.
+ (let ((delete-by-moving-to-trash nil))
+ (rename-file fn new-fn)))))))))
\f
(define-key ctl-x-map "\C-f" 'find-file)