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- ;;; -*- Mode:Emacs-Lisp -*-
- ;;; Jamie Zawinski <jwz@lucid.com> 7-may-91
- ;;;
- ;;; This makes dired buffers which display multiple directories display
- ;;; them in a tree rather than in an "ls -R"-like format. Which, as every
- ;;; Lisp Machine hacker knows, is the Right Thing!
- ;;;
- ;;; -rw-r--r-- 1 jwz 31543 Mar 26 03:20 reportmail.el
- ;;; -rw-r--r-- 1 jwz 14919 Mar 26 03:20 reportmail.elc
- ;;; drwxr-xr-x 2 jwz 1024 Apr 5 13:08 sk-dired/
- ;;; -rw-r--r-- 1 jwz 3258 Mar 6 06:33 ange-ftp-dired.el
- ;;; -rw-r--r-- 1 jwz 1750 Mar 12 15:04 ange-ftp-dired.elc
- ;;; -rw-r--r-- 1 jwz 3151 Mar 29 00:01 symbol-syntax.el
- ;;; -rw-r--r-- 1 jwz 1504 Mar 29 01:01 symbol-syntax.elc
-
- ;;; This program 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 2, or (at your option)
- ;;; any later version.
- ;;;
- ;;; This program 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.
- ;;;
- ;;; A copy of the GNU General Public License can be obtained from this
- ;;; program's author (send electronic mail to the above address) or from
- ;;; Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- (defconst dired-subdir-alist nil
- "Association list of subdirectories and their buffer positions:
-
- ((LASTDIR STARTMARKER ENDMARKER NESTING-DEPTH)
- ...
- (DEFAULT-DIRECTORY POINTMIN POINTMAX 0)).
- "
- ;;The markers point right at the end of the line, so that the cursor
- ;;looks at either \\n or \\r, the latter for a hidden subdir.
- ;; The directories must be file-name-as-directory, of course.
- )
-
- (defun dired-simple-subdir-alist ()
- ;; Build and return `dired-subdir-alist' assuming just the top level
- ;; directory to be inserted. Don't parse the buffer.
- (set (make-local-variable 'dired-subdir-alist)
- (list (list default-directory
- (point-min-marker) (point-max-marker) 0))))
-
- (define-key dired-mode-map "i" 'dired-insert-subdir-inline)
- (define-key dired-mode-map "j" 'dired-maybe-insert-subdir)
-
- ;;; ## these should be macros when this is integrated with the distribution.
- (defun dired-get-subdir-min (elt) (nth 1 elt))
- (defun dired-get-subdir-max (elt) (nth 2 elt))
-
- (defun dired-subdir-min ()
- (let ((d (dired-current-directory))
- c)
- (if (setq c (assoc d dired-subdir-alist))
- (marker-position (dired-get-subdir-min c))
- (error "not in a subdir!"))))
-
- (defun dired-subdir-max ()
- (let ((d (dired-current-directory))
- c)
- (if (setq c (assoc d dired-subdir-alist))
- (marker-position (dired-get-subdir-max c))
- (point-max))))
-
- (defun dired-clear-alist ()
- (while dired-subdir-alist
- (let ((elt (car dired-subdir-alist)))
- (set-marker (nth 1 elt) nil)
- (set-marker (nth 2 elt) nil))
- (setq dired-subdir-alist (cdr dired-subdir-alist))))
-
- (defun dired-unsubdir (dir)
- ;; Remove DIR from the alist.
- ;; also remove any directories which are inside of it.
- (let* ((elt (assoc dir dired-subdir-alist))
- (min (nth 1 elt))
- (max (nth 2 elt))
- other-elt
- (rest dired-subdir-alist))
- (while rest
- (setq other-elt (car rest))
- (if (and (<= min (nth 1 other-elt))
- (>= max (nth 2 other-elt)))
- (setq dired-subdir-alist (delq other-elt dired-subdir-alist)))
- (setq rest (cdr rest)))))
-
- ;;; this needs to be changed to grok indentation. Or not. -jwz
- ;;; Probably not, as dired-revert either starts with one dir and inserting
- ;;; then enlarges the alist automatically, or it inserts all dirs with
- ;;; one "ls -lR". -sk
- (defun dired-build-subdir-alist ()
- "Build dired-subdir-alist by parsing the buffer and return it's new value."
- (interactive)
- (dired-clear-alist)
- (save-excursion
- (let ((count 0))
- (goto-char (point-min))
- (setq dired-subdir-alist nil)
- (while (re-search-forward dired-subdir-regexp nil t)
- (setq count (1+ count))
- (dired-alist-add (buffer-substring (match-beginning 1)
- (match-end 1))
- ;; Put subdir boundary between lines:
- (save-excursion
- (goto-char (match-beginning 0))
- (beginning-of-line)
- (point-marker))
- ;; isn't this wrong when already more than one
- ;; subdir is present with -lR?
- ;; maybe. I don't know. But we can't call
- ;; dired-subdir-max here, it loops. -jwz.
- (point-max-marker)
- 0)
- (message "%d" count))
- (message "%d director%s." count (if (= 1 count) "y" "ies"))
- ;; return new alist:
- dired-subdir-alist)))
-
- (defun dired-alist-add (dir start-marker end-marker indentation-depth)
- ;; indentation-depth may be 0 for more than one directory -- this happens
- ;; when "ls -R" format is used.
- ;; ## debugging code
- (or start-marker (error "start marker nil"))
- (or end-marker (error "end marker nil"))
- ;;(or (/= start-marker end-marker) (error "markers are the same"))
- (let ((old (assoc dir dired-subdir-alist)))
- (setq dired-subdir-alist
- (cons (list (dired-normalize-subdir dir)
- start-marker end-marker
- (or indentation-depth 0))
- (delq old dired-subdir-alist)))
- (dired-alist-sort)))
-
- ;; can't see at the moment how this could work with a mixed format
- ;; alist -sk
- (defun dired-current-directory (&optional relative)
- "Get the subdirectory to which this line belongs.
- This returns a string with trailing slash, like default-directory.
- Optional argument means return a name relative to default-directory."
- (let (elt
- (here (point))
- (alist (or dired-subdir-alist (dired-build-subdir-alist)))
- best-so-far)
- (while alist
- (setq elt (car alist))
- (if (or (< here (nth 1 elt))
- (> here (nth 2 elt)))
- nil ;; the subdir is disjoint
- ;; otherwise it's on the path between the current file and the root.
- ;; decide if it's deeper than what we've already got.
- (if (or (null best-so-far)
- (< (- (nth 2 elt) (nth 1 elt))
- (- (nth 2 best-so-far) (nth 1 best-so-far))))
- (setq best-so-far elt)))
- (setq alist (cdr alist)))
- (if best-so-far
- (if relative
- (dired-make-relative (car best-so-far) default-directory)
- (car best-so-far))
- (progn
- (dired-build-subdir-alist)
- (dired-current-directory relative)))))
-
- (defun dired-insert-subdir-del (element)
- ;; Erase an already present subdir (given by ELEMENT) from buffer.
- ;; Move to that buffer position. Return a mark-alist.
- (let ((begin-marker (dired-get-subdir-min element))
- (end-marker (dired-get-subdir-max element)))
- (goto-char end-marker)
- (or (eobp)
- (not (= 0 (nth 3 element)))
- ;; for -R style, want a separating newline _between_ subdirs.
- (forward-char -1))
- (if (= 0 (nth 3 element))
- (insert "\n\n"))
- (prog1
- (dired-remember-marks begin-marker (point))
- (delete-region begin-marker (point)))))
-
-
- (defun dired-insert-subdir-doupdate (dirname elt beg-end)
- (let ((beg (nth 0 beg-end))
- (end (nth 1 beg-end))
- (indent (or (nth 2 beg-end) 0)))
- (if (and elt
- (not (eq indent (nth 2 elt))))
- (setq elt nil
- dired-subdir-alist (delq elt dired-subdir-alist)))
- (if elt
- (let ((old-start (nth 1 elt))
- (old-end (nth 2 elt)))
- (set-marker old-start beg)
- (set-marker old-end end)
- (setcar (nthcdr 3 elt) indent))
- (dired-alist-add dirname
- (set-marker (make-marker) beg)
- (set-marker (make-marker) end)
- indent))))
-
- (defun dired-insert-subdir-inline (dirname &optional switches no-error-if-not-dir-p)
- "Insert this subdirectory into the same dired buffer.
- If it is already present, overwrites previous entry,
- else inserts it, indented, within its parent's listing.
- With a prefix arg, you may edit the ls switches used for this listing.
- This command ignores the `R' switch."
- ;; NO-ERROR-IF-NOT-DIR-P needed for special filesystems like
- ;; Prospero where dired-ls does the right thing, but
- ;; file-directory-p has not been redefined.
- (interactive
- (list (dired-get-filename)
- (if current-prefix-arg
- (read-string "Switches for listing: " dired-actual-switches))))
- (setq dirname (file-name-as-directory (expand-file-name dirname)))
- (if (let ((case-fold-search nil))
- (string-match "R" (or switches "")))
- (setq switches (concat (substring switches 0 (match-beginning 0))
- (substring switches (match-end 0)))))
- (dired-make-relative dirname default-directory) ; error on failure
- (or no-error-if-not-dir-p
- (file-directory-p dirname)
- (error "Attempt to insert a non-directory: %s" dirname))
- (let ((elt (assoc dirname dired-subdir-alist))
- (parentdir (file-name-directory (directory-file-name dirname)))
- beg end old-start old-end new-start new-end
- mark-alist
- tail-adjascents
- buffer-read-only case-fold-search)
- (if elt
- ;; subdir is already present - must first erase it from buffer.
- ;; if it's already in -R format, pretend it wasn't there, but
- ;; remember its file marks.
- (progn
- (setq mark-alist
- (append (dired-insert-subdir-del elt) mark-alist))
- (setq dired-subdir-alist
- (delq elt dired-subdir-alist))))
- ;;(dired-insert-subdir-newpos) ;##
- (dired-goto-file dirname)
- (forward-line 1)
- (dired-insert-subdir-doupdate
- dirname elt (dired-insert-subdir-inline-doinsert dirname switches parentdir))
- (dired-initial-position dirname)
- (save-excursion (dired-mark-remembered mark-alist)))
- (dired-nuke-extra-newlines)
- )
-
-
- (defun dired-insert-subdir (dirname &optional switches no-error-if-not-dir-p)
- "Insert this subdirectory into the same dired buffer.
- If it is already present, overwrites previous entry,
- else appends at end of buffer.
- With a prefix arg, you may edit the ls switches used for this listing.
- You can add `R' to the switches to expand the whole tree starting at
- this subdirectory.
- This function takes some pains to conform to ls -lR output."
- ;; NO-ERROR-IF-NOT-DIR-P needed for special filesystems like
- ;; Prospero where dired-ls does the right thing, but
- ;; file-directory-p has not been redefined.
- (interactive
- (list (dired-get-filename)
- (if current-prefix-arg
- (read-string "Switches for listing: " dired-actual-switches))))
- (setq dirname (file-name-as-directory (expand-file-name dirname)))
- (dired-make-relative dirname default-directory) ; error on failure
- (or no-error-if-not-dir-p
- (file-directory-p dirname)
- (error "Attempt to insert a non-directory: %s" dirname))
- (let ((elt (assoc dirname dired-subdir-alist))
- (switches-have-R (and switches (string-match "R" switches)))
- mark-alist
- buffer-read-only case-fold-search)
- (if switches-have-R ; avoid double subdirs
- (setq mark-alist (dired-kill-tree dirname t)))
- (let ((was-nested (and (nth 3 elt) (not (eq 0 (nth 3 elt))))))
- (if elt ; subdir is already present
- (setq mark-alist ; remove it, remembering marks
- (append (dired-insert-subdir-del elt) mark-alist)))
- (if (or was-nested (null elt))
- (dired-insert-subdir-newpos dirname))
- (if was-nested (setcar (nthcdr 3 elt) 0)))
- (dired-insert-subdir-doupdate
- dirname elt (dired-insert-subdir-doinsert dirname switches))
- (if switches-have-R (dired-build-subdir-alist))
- (dired-initial-position dirname)
- (save-excursion (dired-mark-remembered mark-alist)))
- (dired-nuke-extra-newlines))
-
- (defun dired-nuke-extra-newlines ()
- (let ((buffer-read-only nil))
- (save-excursion
- (goto-char (point-min))
- (while (re-search-forward "\n\n\n+" nil t)
- (goto-char (+ 2 (match-beginning 0)))
- (delete-region (point) (match-end 0))))))
-
-
- (defun dired-insert-subdir-newpos (new-dir)
- ;; Find pos for new subdir, according to tree order.
- ;;(goto-char (point-max))
- (let ((alist dired-subdir-alist) elt dir pos new-pos)
- (while alist
- (setq elt (car alist)
- alist (cdr alist)
- dir (car elt)
- pos (dired-get-subdir-min elt))
- (if (and (= 0 (nth 3 elt)) ; nested ones don't count.
- (dired-tree-lessp dir new-dir))
- ;; Insert NEW-DIR after DIR
- (setq new-pos (dired-get-subdir-max elt)
- alist nil)))
- (goto-char new-pos))
- ;; want a separating newline between subdirs
- (insert "\n\n")
- (point))
-
-
- (defvar dired-no-inline-headerlines t
- "*set this to t to suppress the directory header and `total' line.")
-
-
- (defun dired-insert-subdir-inline-doinsert (dirname switches parentdir)
- ;; Insert ls output after point and put point on the correct
- ;; position for the subdir alist.
- ;; returns the dired-subdir-alist entry.
- (let ((begin (point)) end
- indent
- tail-adjascents)
- (message "Reading directory %s..." dirname)
- (dired-ls dirname
- (or switches
- (dired-replace-in-string "R" "" dired-actual-switches))
- nil t)
- (message "Reading directory %s...done" dirname)
- (setq end (point))
- (setq indent (1+ (nth 3 (assoc parentdir dired-subdir-alist))))
-
- (save-excursion
- (goto-char begin)
- (or dired-no-inline-headerlines
- (progn
- (dired-insert-headerline dirname)
- (save-excursion (delete-horizontal-space)))
- (goto-char begin)
- (delete-horizontal-space))
- (if (and dired-no-inline-headerlines
- (looking-at "^ *total [0-9]"))
- (progn
- (delete-region (point) (progn (forward-line 1) (point)))
- (setq begin (point)))))
- ;;
- ;; If there are other directories whose end-point is right here,
- ;; then they are the directories such that X is the last directory
- ;; in the listing of Y. We need to grab them and update their
- ;; last-point to be the same as ours will be (goofy margin-case).
- ;;
- (let ((rest dired-subdir-alist))
- (while rest
- (if (= (point) (nth 2 (car rest)))
- (setq tail-adjascents (cons (car rest) tail-adjascents)))
- (setq rest (cdr rest))))
- (let ((indent-tabs-mode nil))
- (indent-rigidly begin (point) (* 2 (1+ indent))))
- (setq end (point-marker))
- (goto-char begin)
- (while tail-adjascents
- (set-marker (nth 2 (car tail-adjascents)) end)
- (setq tail-adjascents (cdr tail-adjascents)))
- (if dired-after-readin-hook
- (save-restriction
- (narrow-to-region begin end)
- (run-hooks 'dired-after-readin-hook)))
- ;; call dired-insert-headerline afterwards, as under VMS dired-ls
- ;; does insert the headerline itself and the insert function just
- ;; moves point.
- (setq end (prog1 (marker-position end) (set-marker end nil)))
- (goto-char begin)
- (list begin end indent)))
-
-
- (defun dired-insert-subdir-doinsert (dirname switches)
- ;; Insert ls output after point and put point on the correct
- ;; position for the subdir alist.
- ;; Return the boundary of the inserted text (as list of BEG and END).
- (let ((begin (point)) end)
- (message "Reading directory %s..." dirname)
- (dired-ls dirname
- (or switches
- (dired-replace-in-string "R" "" dired-actual-switches))
- nil t)
- (message "Reading directory %s...done" dirname)
- (insert "\n\n")
- (setq end (point-marker))
- (indent-rigidly begin (point) 2)
- (if dired-after-readin-hook
- (save-restriction
- (narrow-to-region begin (point))
- (run-hooks 'dired-after-readin-hook)))
- ;; call dired-insert-headerline afterwards, as under VMS dired-ls
- ;; does insert the headerline itself and the insert function just
- ;; moves point.
- (goto-char begin)
- (dired-insert-headerline dirname)
- ;; point is now like in dired-build-subdir-alist
- (setq end (prog1 (marker-position end) (set-marker end nil)))
- (list begin end)))
-
-
- (defun dired-insert-old-subdirs (old-subdir-alist)
- ;; Try to insert all subdirs that were displayed before
- (or (string-match "R" dired-actual-switches)
- (let (elt dir)
- (setq old-subdir-alist (sort old-subdir-alist
- (function (lambda (x y)
- (< (nth 3 x) (nth 3 y))))))
- (while old-subdir-alist
- (setq elt (car old-subdir-alist)
- old-subdir-alist (cdr old-subdir-alist)
- dir (car elt))
- (condition-case ()
- (if (= 0 (nth 3 elt))
- (dired-insert-subdir dir)
- (dired-insert-subdir-inline dir))
- (error nil))))))
-
- (defun dired-add-entry-do-indentation (marker-char)
- ;; two spaces or a marker plus a space, plus nesting indentation.
- ;; Uses fluid vars `directory', `marker-char' from dired-add-entry
- (insert (if marker-char
- (if (integerp marker-char) marker-char dired-marker-char)
- ?\040)
- ?\040)
- (let ((indent (nth 3 (assoc directory dired-subdir-alist))))
- (insert (make-string (* 2 indent) ?\040))))
-