Fix bootstrapping problem. (Reported by "mace".)
[emacs.git] / lisp / dired-aux.el
blob7a34c39bed5be616f34eab6ff1a6da139b99b6f8
1 ;;; dired-aux.el --- less commonly used parts of dired -*-byte-compile-dynamic: t;-*-
3 ;; Copyright (C) 1985, 1986, 1992, 1994, 1998, 2000, 2001, 2002, 2003,
4 ;; 2004, 2005 Free Software Foundation, Inc.
6 ;; Author: Sebastian Kremer <sk@thp.uni-koeln.de>.
7 ;; Maintainer: FSF
8 ;; Keywords: files
10 ;; This file is part of GNU Emacs.
12 ;; GNU Emacs is free software; you can redistribute it and/or modify
13 ;; it under the terms of the GNU General Public License as published by
14 ;; the Free Software Foundation; either version 2, or (at your option)
15 ;; any later version.
17 ;; GNU Emacs is distributed in the hope that it will be useful,
18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 ;; GNU General Public License for more details.
22 ;; You should have received a copy of the GNU General Public License
23 ;; along with GNU Emacs; see the file COPYING. If not, write to the
24 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
25 ;; Boston, MA 02110-1301, USA.
27 ;;; Commentary:
29 ;; The parts of dired mode not normally used. This is a space-saving hack
30 ;; to avoid having to load a large mode when all that's wanted are a few
31 ;; functions.
33 ;; Rewritten in 1990/1991 to add tree features, file marking and
34 ;; sorting by Sebastian Kremer <sk@thp.uni-koeln.de>.
35 ;; Finished up by rms in 1992.
37 ;;; Code:
39 ;; We need macros in dired.el to compile properly.
40 (eval-when-compile (require 'dired))
42 ;;; 15K
43 ;;;###begin dired-cmd.el
44 ;; Diffing and compressing
46 (defconst dired-star-subst-regexp "\\(^\\|[ \t]\\)\\*\\([ \t]\\|$\\)")
47 (defconst dired-quark-subst-regexp "\\(^\\|[ \t]\\)\\?\\([ \t]\\|$\\)")
49 ;;;###autoload
50 (defun dired-diff (file &optional switches)
51 "Compare file at point with file FILE using `diff'.
52 FILE defaults to the file at the mark. (That's the mark set by
53 \\[set-mark-command], not by Dired's \\[dired-mark] command.)
54 The prompted-for file is the first file given to `diff'.
55 With prefix arg, prompt for second argument SWITCHES,
56 which is options for `diff'."
57 (interactive
58 (let ((current (dired-get-filename t))
59 (default (if (mark t)
60 (save-excursion (goto-char (mark t))
61 (dired-get-filename t t)))))
62 (if (or (equal default current)
63 (and (not (equal (dired-dwim-target-directory)
64 (dired-current-directory)))
65 (not mark-active)))
66 (setq default nil))
67 (require 'diff)
68 (list (read-file-name (format "Diff %s with%s: "
69 current
70 (if default
71 (concat " (default " default ")")
72 ""))
73 (if default
74 (dired-current-directory)
75 (dired-dwim-target-directory))
76 default t)
77 (if current-prefix-arg
78 (read-string "Options for diff: "
79 (if (stringp diff-switches)
80 diff-switches
81 (mapconcat 'identity diff-switches " ")))))))
82 (diff file (dired-get-filename t) switches))
84 ;;;###autoload
85 (defun dired-backup-diff (&optional switches)
86 "Diff this file with its backup file or vice versa.
87 Uses the latest backup, if there are several numerical backups.
88 If this file is a backup, diff it with its original.
89 The backup file is the first file given to `diff'.
90 With prefix arg, prompt for argument SWITCHES which is options for `diff'."
91 (interactive
92 (if current-prefix-arg
93 (list (read-string "Options for diff: "
94 (if (stringp diff-switches)
95 diff-switches
96 (mapconcat 'identity diff-switches " "))))
97 nil))
98 (diff-backup (dired-get-filename) switches))
100 ;;;###autoload
101 (defun dired-compare-directories (dir2 predicate)
102 "Mark files with different file attributes in two dired buffers.
103 Compare file attributes of files in the current directory
104 with file attributes in directory DIR2 using PREDICATE on pairs of files
105 with the same name. Mark files for which PREDICATE returns non-nil.
106 Mark files with different names if PREDICATE is nil (or interactively
107 with empty input at the predicate prompt).
109 PREDICATE is a Lisp expression that can refer to the following variables:
111 size1, size2 - file size in bytes
112 mtime1, mtime2 - last modification time in seconds, as a float
113 fa1, fa2 - list of file attributes
114 returned by function `file-attributes'
116 where 1 refers to attribute of file in the current dired buffer
117 and 2 to attribute of file in second dired buffer.
119 Examples of PREDICATE:
121 (> mtime1 mtime2) - mark newer files
122 (not (= size1 size2)) - mark files with different sizes
123 (not (string= (nth 8 fa1) (nth 8 fa2))) - mark files with different modes
124 (not (and (= (nth 2 fa1) (nth 2 fa2)) - mark files with different UID
125 (= (nth 3 fa1) (nth 3 fa2)))) and GID."
126 (interactive
127 (list (read-directory-name (format "Compare %s with: "
128 (dired-current-directory))
129 (dired-dwim-target-directory)
130 (dired-dwim-target-directory))
131 (read-from-minibuffer "Mark if (lisp expr or RET): " nil nil t nil "nil")))
132 (let* ((dir1 (dired-current-directory))
133 (file-alist1 (dired-files-attributes dir1))
134 (file-alist2 (dired-files-attributes dir2))
135 file-list1 file-list2)
136 (setq file-alist1 (delq (assoc "." file-alist1) file-alist1))
137 (setq file-alist1 (delq (assoc ".." file-alist1) file-alist1))
138 (setq file-alist2 (delq (assoc "." file-alist2) file-alist2))
139 (setq file-alist2 (delq (assoc ".." file-alist2) file-alist2))
140 (setq file-list1 (mapcar
141 'cadr
142 (dired-file-set-difference
143 file-alist1 file-alist2
144 predicate))
145 file-list2 (mapcar
146 'cadr
147 (dired-file-set-difference
148 file-alist2 file-alist1
149 predicate)))
150 (dired-fun-in-all-buffers
151 dir1 nil
152 (lambda ()
153 (dired-mark-if
154 (member (dired-get-filename nil t) file-list1) nil)))
155 (dired-fun-in-all-buffers
156 dir2 nil
157 (lambda ()
158 (dired-mark-if
159 (member (dired-get-filename nil t) file-list2) nil)))
160 (message "Marked in dir1: %s files, in dir2: %s files"
161 (length file-list1)
162 (length file-list2))))
164 (defun dired-file-set-difference (list1 list2 predicate)
165 "Combine LIST1 and LIST2 using a set-difference operation.
166 The result list contains all file items that appear in LIST1 but not LIST2.
167 This is a non-destructive function; it makes a copy of the data if necessary
168 to avoid corrupting the original LIST1 and LIST2.
169 PREDICATE (see `dired-compare-directories') is an additional match
170 condition. Two file items are considered to match if they are equal
171 *and* PREDICATE evaluates to t."
172 (if (or (null list1) (null list2))
173 list1
174 (let (res)
175 (dolist (file1 list1)
176 (unless (let ((list list2))
177 (while (and list
178 (not (let* ((file2 (car list))
179 (fa1 (car (cddr file1)))
180 (fa2 (car (cddr file2)))
181 (size1 (nth 7 fa1))
182 (size2 (nth 7 fa2))
183 (mtime1 (float-time (nth 5 fa1)))
184 (mtime2 (float-time (nth 5 fa2))))
185 (and
186 (equal (car file1) (car file2))
187 (not (eval predicate))))))
188 (setq list (cdr list)))
189 list)
190 (setq res (cons file1 res))))
191 (nreverse res))))
193 (defun dired-files-attributes (dir)
194 "Return a list of all file names and attributes from DIR.
195 List has a form of (file-name full-file-name (attribute-list))"
196 (mapcar
197 (lambda (file-name)
198 (let ((full-file-name (expand-file-name file-name dir)))
199 (list file-name
200 full-file-name
201 (file-attributes full-file-name))))
202 (directory-files dir)))
205 (defun dired-touch-initial (files)
206 "Create initial input value for `touch' command."
207 (let (initial)
208 (while files
209 (let ((current (nth 5 (file-attributes (car files)))))
210 (if (and initial (not (equal initial current)))
211 (setq initial (current-time) files nil)
212 (setq initial current))
213 (setq files (cdr files))))
214 (format-time-string "%Y%m%d%H%M.%S" initial)))
216 (defun dired-do-chxxx (attribute-name program op-symbol arg)
217 ;; Change file attributes (mode, group, owner, timestamp) of marked files and
218 ;; refresh their file lines.
219 ;; ATTRIBUTE-NAME is a string describing the attribute to the user.
220 ;; PROGRAM is the program used to change the attribute.
221 ;; OP-SYMBOL is the type of operation (for use in dired-mark-pop-up).
222 ;; ARG describes which files to use, as in dired-get-marked-files.
223 (let* ((files (dired-get-marked-files t arg))
224 (new-attribute
225 (dired-mark-read-string
226 (concat "Change " attribute-name " of %s to: ")
227 (if (eq op-symbol 'touch) (dired-touch-initial files))
228 op-symbol arg files))
229 (operation (concat program " " new-attribute))
230 failures)
231 (setq failures
232 (dired-bunch-files 10000
233 (function dired-check-process)
234 (append
235 (list operation program)
236 (if (eq op-symbol 'touch)
237 '("-t") nil)
238 (list new-attribute)
239 (if (string-match "gnu" system-configuration)
240 '("--") nil))
241 files))
242 (dired-do-redisplay arg);; moves point if ARG is an integer
243 (if failures
244 (dired-log-summary
245 (format "%s: error" operation)
246 nil))))
248 ;;;###autoload
249 (defun dired-do-chmod (&optional arg)
250 "Change the mode of the marked (or next ARG) files.
251 This calls chmod, thus symbolic modes like `g+w' are allowed."
252 (interactive "P")
253 (dired-do-chxxx "Mode" dired-chmod-program 'chmod arg))
255 ;;;###autoload
256 (defun dired-do-chgrp (&optional arg)
257 "Change the group of the marked (or next ARG) files."
258 (interactive "P")
259 (if (memq system-type '(ms-dos windows-nt))
260 (error "chgrp not supported on this system"))
261 (dired-do-chxxx "Group" "chgrp" 'chgrp arg))
263 ;;;###autoload
264 (defun dired-do-chown (&optional arg)
265 "Change the owner of the marked (or next ARG) files."
266 (interactive "P")
267 (if (memq system-type '(ms-dos windows-nt))
268 (error "chown not supported on this system"))
269 (dired-do-chxxx "Owner" dired-chown-program 'chown arg))
271 ;;;###autoload
272 (defun dired-do-touch (&optional arg)
273 "Change the timestamp of the marked (or next ARG) files.
274 This calls touch."
275 (interactive "P")
276 (dired-do-chxxx "Timestamp" dired-touch-program 'touch arg))
278 ;; Process all the files in FILES in batches of a convenient size,
279 ;; by means of (FUNCALL FUNCTION ARGS... SOME-FILES...).
280 ;; Batches are chosen to need less than MAX chars for the file names,
281 ;; allowing 3 extra characters of separator per file name.
282 (defun dired-bunch-files (max function args files)
283 (let (pending
284 past
285 (pending-length 0)
286 failures)
287 ;; Accumulate files as long as they fit in MAX chars,
288 ;; then process the ones accumulated so far.
289 (while files
290 (let* ((thisfile (car files))
291 (thislength (+ (length thisfile) 3))
292 (rest (cdr files)))
293 ;; If we have at least 1 pending file
294 ;; and this file won't fit in the length limit, process now.
295 (if (and pending (> (+ thislength pending-length) max))
296 (setq pending (nreverse pending)
297 ;; The elements of PENDING are now in forward order.
298 ;; Do the operation and record failures.
299 failures (nconc (apply function (append args pending))
300 failures)
301 ;; Transfer the elemens of PENDING onto PAST
302 ;; and clear it out. Now PAST contains the first N files
303 ;; specified (for some N), and FILES contains the rest.
304 past (nconc past pending)
305 pending nil
306 pending-length 0))
307 ;; Do (setq pending (cons thisfile pending))
308 ;; but reuse the cons that was in `files'.
309 (setcdr files pending)
310 (setq pending files)
311 (setq pending-length (+ thislength pending-length))
312 (setq files rest)))
313 (setq pending (nreverse pending))
314 (prog1
315 (nconc (apply function (append args pending))
316 failures)
317 ;; Now the original list FILES has been put back as it was.
318 (nconc past pending))))
320 ;;;###autoload
321 (defun dired-do-print (&optional arg)
322 "Print the marked (or next ARG) files.
323 Uses the shell command coming from variables `lpr-command' and
324 `lpr-switches' as default."
325 (interactive "P")
326 (let* ((file-list (dired-get-marked-files t arg))
327 (command (dired-mark-read-string
328 "Print %s with: "
329 (mapconcat 'identity
330 (cons lpr-command
331 (if (stringp lpr-switches)
332 (list lpr-switches)
333 lpr-switches))
334 " ")
335 'print arg file-list)))
336 (dired-run-shell-command (dired-shell-stuff-it command file-list nil))))
338 ;; Read arguments for a marked-files command that wants a string
339 ;; that is not a file name,
340 ;; perhaps popping up the list of marked files.
341 ;; ARG is the prefix arg and indicates whether the files came from
342 ;; marks (ARG=nil) or a repeat factor (integerp ARG).
343 ;; If the current file was used, the list has but one element and ARG
344 ;; does not matter. (It is non-nil, non-integer in that case, namely '(4)).
346 (defun dired-mark-read-string (prompt initial op-symbol arg files)
347 ;; PROMPT for a string, with INITIAL input.
348 ;; Other args are used to give user feedback and pop-up:
349 ;; OP-SYMBOL of command, prefix ARG, marked FILES.
350 (dired-mark-pop-up
351 nil op-symbol files
352 (function read-string)
353 (format prompt (dired-mark-prompt arg files)) initial))
355 ;;; Cleaning a directory: flagging some backups for deletion.
357 (defvar dired-file-version-alist)
359 ;;;###autoload
360 (defun dired-clean-directory (keep)
361 "Flag numerical backups for deletion.
362 Spares `dired-kept-versions' latest versions, and `kept-old-versions' oldest.
363 Positive prefix arg KEEP overrides `dired-kept-versions';
364 Negative prefix arg KEEP overrides `kept-old-versions' with KEEP made positive.
366 To clear the flags on these files, you can use \\[dired-flag-backup-files]
367 with a prefix argument."
368 (interactive "P")
369 (setq keep (if keep (prefix-numeric-value keep) dired-kept-versions))
370 (let ((early-retention (if (< keep 0) (- keep) kept-old-versions))
371 (late-retention (if (<= keep 0) dired-kept-versions keep))
372 (dired-file-version-alist ()))
373 (message "Cleaning numerical backups (keeping %d late, %d old)..."
374 late-retention early-retention)
375 ;; Look at each file.
376 ;; If the file has numeric backup versions,
377 ;; put on dired-file-version-alist an element of the form
378 ;; (FILENAME . VERSION-NUMBER-LIST)
379 (dired-map-dired-file-lines (function dired-collect-file-versions))
380 ;; Sort each VERSION-NUMBER-LIST,
381 ;; and remove the versions not to be deleted.
382 (let ((fval dired-file-version-alist))
383 (while fval
384 (let* ((sorted-v-list (cons 'q (sort (cdr (car fval)) '<)))
385 (v-count (length sorted-v-list)))
386 (if (> v-count (+ early-retention late-retention))
387 (rplacd (nthcdr early-retention sorted-v-list)
388 (nthcdr (- v-count late-retention)
389 sorted-v-list)))
390 (rplacd (car fval)
391 (cdr sorted-v-list)))
392 (setq fval (cdr fval))))
393 ;; Look at each file. If it is a numeric backup file,
394 ;; find it in a VERSION-NUMBER-LIST and maybe flag it for deletion.
395 (dired-map-dired-file-lines (function dired-trample-file-versions))
396 (message "Cleaning numerical backups...done")))
398 ;;; Subroutines of dired-clean-directory.
400 (defun dired-map-dired-file-lines (fun)
401 ;; Perform FUN with point at the end of each non-directory line.
402 ;; FUN takes one argument, the absolute filename.
403 (save-excursion
404 (let (file buffer-read-only)
405 (goto-char (point-min))
406 (while (not (eobp))
407 (save-excursion
408 (and (not (looking-at dired-re-dir))
409 (not (eolp))
410 (setq file (dired-get-filename nil t)) ; nil on non-file
411 (progn (end-of-line)
412 (funcall fun file))))
413 (forward-line 1)))))
415 (defun dired-collect-file-versions (fn)
416 (let ((fn (file-name-sans-versions fn)))
417 ;; Only do work if this file is not already in the alist.
418 (if (assoc fn dired-file-version-alist)
420 ;; If it looks like file FN has versions, return a list of the versions.
421 ;;That is a list of strings which are file names.
422 ;;The caller may want to flag some of these files for deletion.
423 (let* ((base-versions
424 (concat (file-name-nondirectory fn) ".~"))
425 (backup-extract-version-start (length base-versions))
426 (possibilities (file-name-all-completions
427 base-versions
428 (file-name-directory fn)))
429 (versions (mapcar 'backup-extract-version possibilities)))
430 (if versions
431 (setq dired-file-version-alist
432 (cons (cons fn versions)
433 dired-file-version-alist)))))))
435 (defun dired-trample-file-versions (fn)
436 (let* ((start-vn (string-match "\\.~[0-9]+~$" fn))
437 base-version-list)
438 (and start-vn
439 (setq base-version-list ; there was a base version to which
440 (assoc (substring fn 0 start-vn) ; this looks like a
441 dired-file-version-alist)) ; subversion
442 (not (memq (string-to-number (substring fn (+ 2 start-vn)))
443 base-version-list)) ; this one doesn't make the cut
444 (progn (beginning-of-line)
445 (delete-char 1)
446 (insert dired-del-marker)))))
448 ;;; Shell commands
450 (defun dired-read-shell-command (prompt arg files)
451 ;; "Read a dired shell command prompting with PROMPT (using read-string).
452 ;;ARG is the prefix arg and may be used to indicate in the prompt which
453 ;; files are affected.
454 ;;This is an extra function so that you can redefine it, e.g., to use gmhist."
455 (dired-mark-pop-up
456 nil 'shell files
457 (function read-string)
458 (format prompt (dired-mark-prompt arg files))
459 nil 'shell-command-history))
461 ;; The in-background argument is only needed in Emacs 18 where
462 ;; shell-command doesn't understand an appended ampersand `&'.
463 ;;;###autoload
464 (defun dired-do-shell-command (command &optional arg file-list)
465 "Run a shell command COMMAND on the marked files.
466 If no files are marked or a specific numeric prefix arg is given,
467 the next ARG files are used. Just \\[universal-argument] means the current file.
468 The prompt mentions the file(s) or the marker, as appropriate.
470 If there is a `*' in COMMAND, surrounded by whitespace, this runs
471 COMMAND just once with the entire file list substituted there.
473 If there is no `*', but there is a `?' in COMMAND, surrounded by
474 whitespace, this runs COMMAND on each file individually with the
475 file name substituted for `?'.
477 Otherwise, this runs COMMAND on each file individually with the
478 file name added at the end of COMMAND (separated by a space).
480 `*' and `?' when not surrounded by whitespace have no special
481 significance for `dired-do-shell-command', and are passed through
482 normally to the shell, but you must confirm first. To pass `*' by
483 itself to the shell as a wildcard, type `*\"\"'.
485 If COMMAND produces output, it goes to a separate buffer.
487 This feature does not try to redisplay Dired buffers afterward, as
488 there's no telling what files COMMAND may have changed.
489 Type \\[dired-do-redisplay] to redisplay the marked files.
491 When COMMAND runs, its working directory is the top-level directory of
492 the Dired buffer, so output files usually are created there instead of
493 in a subdir.
495 In a noninteractive call (from Lisp code), you must specify
496 the list of file names explicitly with the FILE-LIST argument."
497 ;;Functions dired-run-shell-command and dired-shell-stuff-it do the
498 ;;actual work and can be redefined for customization.
499 (interactive
500 (let ((files (dired-get-marked-files t current-prefix-arg)))
501 (list
502 ;; Want to give feedback whether this file or marked files are used:
503 (dired-read-shell-command (concat "! on "
504 "%s: ")
505 current-prefix-arg
506 files)
507 current-prefix-arg
508 files)))
509 (let* ((on-each (not (string-match dired-star-subst-regexp command)))
510 (subst (not (string-match dired-quark-subst-regexp command)))
511 (star (not (string-match "\\*" command)))
512 (qmark (not (string-match "\\?" command))))
513 ;; Get confirmation for wildcards that may have been meant
514 ;; to control substitution of a file name or the file name list.
515 (if (cond ((not (or on-each subst))
516 (error "You can not combine `*' and `?' substitution marks"))
517 ((and star (not on-each))
518 (y-or-n-p "Confirm--do you mean to use `*' as a wildcard? "))
519 ((and qmark (not subst))
520 (y-or-n-p "Confirm--do you mean to use `?' as a wildcard? "))
521 (t))
522 (if on-each
523 (dired-bunch-files
524 (- 10000 (length command))
525 (function (lambda (&rest files)
526 (dired-run-shell-command
527 (dired-shell-stuff-it command files t arg))))
529 file-list)
530 ;; execute the shell command
531 (dired-run-shell-command
532 (dired-shell-stuff-it command file-list nil arg))))))
534 ;; Might use {,} for bash or csh:
535 (defvar dired-mark-prefix ""
536 "Prepended to marked files in dired shell commands.")
537 (defvar dired-mark-postfix ""
538 "Appended to marked files in dired shell commands.")
539 (defvar dired-mark-separator " "
540 "Separates marked files in dired shell commands.")
542 (defun dired-shell-stuff-it (command file-list on-each &optional raw-arg)
543 ;; "Make up a shell command line from COMMAND and FILE-LIST.
544 ;; If ON-EACH is t, COMMAND should be applied to each file, else
545 ;; simply concat all files and apply COMMAND to this.
546 ;; FILE-LIST's elements will be quoted for the shell."
547 ;; Might be redefined for smarter things and could then use RAW-ARG
548 ;; (coming from interactive P and currently ignored) to decide what to do.
549 ;; Smart would be a way to access basename or extension of file names.
550 (let ((stuff-it
551 (if (or (string-match dired-star-subst-regexp command)
552 (string-match dired-quark-subst-regexp command))
553 (lambda (x)
554 (let ((retval command))
555 (while (string-match
556 "\\(^\\|[ \t]\\)\\([*?]\\)\\([ \t]\\|$\\)" retval)
557 (setq retval (replace-match x t t retval 2)))
558 retval))
559 (lambda (x) (concat command dired-mark-separator x)))))
560 (if on-each
561 (mapconcat stuff-it (mapcar 'shell-quote-argument file-list) ";")
562 (let ((files (mapconcat 'shell-quote-argument
563 file-list dired-mark-separator)))
564 (if (> (length file-list) 1)
565 (setq files (concat dired-mark-prefix files dired-mark-postfix)))
566 (funcall stuff-it files)))))
568 ;; This is an extra function so that it can be redefined by ange-ftp.
569 ;;;###autoload
570 (defun dired-run-shell-command (command)
571 (let ((handler
572 (find-file-name-handler (directory-file-name default-directory)
573 'shell-command)))
574 (if handler (apply handler 'shell-command (list command))
575 (shell-command command)))
576 ;; Return nil for sake of nconc in dired-bunch-files.
577 nil)
579 ;; In Emacs 19 this will return program's exit status.
580 ;; This is a separate function so that ange-ftp can redefine it.
581 (defun dired-call-process (program discard &rest arguments)
582 ; "Run PROGRAM with output to current buffer unless DISCARD is t.
583 ;Remaining arguments are strings passed as command arguments to PROGRAM."
584 ;; Look for a handler for default-directory in case it is a remote file name.
585 (let ((handler
586 (find-file-name-handler (directory-file-name default-directory)
587 'dired-call-process)))
588 (if handler (apply handler 'dired-call-process
589 program discard arguments)
590 (apply 'call-process program nil (not discard) nil arguments))))
592 (defun dired-check-process (msg program &rest arguments)
593 ; "Display MSG while running PROGRAM, and check for output.
594 ;Remaining arguments are strings passed as command arguments to PROGRAM.
595 ; On error, insert output
596 ; in a log buffer and return the offending ARGUMENTS or PROGRAM.
597 ; Caller can cons up a list of failed args.
598 ;Else returns nil for success."
599 (let (err-buffer err (dir default-directory))
600 (message "%s..." msg)
601 (save-excursion
602 ;; Get a clean buffer for error output:
603 (setq err-buffer (get-buffer-create " *dired-check-process output*"))
604 (set-buffer err-buffer)
605 (erase-buffer)
606 (setq default-directory dir ; caller's default-directory
607 err (not (eq 0
608 (apply (function dired-call-process) program nil arguments))))
609 (if err
610 (progn
611 (dired-log (concat program " " (prin1-to-string arguments) "\n"))
612 (dired-log err-buffer)
613 (or arguments program t))
614 (kill-buffer err-buffer)
615 (message "%s...done" msg)
616 nil))))
618 ;; Commands that delete or redisplay part of the dired buffer.
620 (defun dired-kill-line (&optional arg)
621 (interactive "P")
622 (setq arg (prefix-numeric-value arg))
623 (let (buffer-read-only file)
624 (while (/= 0 arg)
625 (setq file (dired-get-filename nil t))
626 (if (not file)
627 (error "Can only kill file lines")
628 (save-excursion (and file
629 (dired-goto-subdir file)
630 (dired-kill-subdir)))
631 (delete-region (progn (beginning-of-line) (point))
632 (progn (forward-line 1) (point)))
633 (if (> arg 0)
634 (setq arg (1- arg))
635 (setq arg (1+ arg))
636 (forward-line -1))))
637 (dired-move-to-filename)))
639 ;;;###autoload
640 (defun dired-do-kill-lines (&optional arg fmt)
641 "Kill all marked lines (not the files).
642 With a prefix argument, kill that many lines starting with the current line.
643 \(A negative argument kills backward.)
644 If you use this command with a prefix argument to kill the line
645 for a file that is a directory, which you have inserted in the
646 Dired buffer as a subdirectory, then it deletes that subdirectory
647 from the buffer as well.
648 To kill an entire subdirectory \(without killing its line in the
649 parent directory), go to its directory header line and use this
650 command with a prefix argument (the value does not matter)."
651 ;; Returns count of killed lines. FMT="" suppresses message.
652 (interactive "P")
653 (if arg
654 (if (dired-get-subdir)
655 (dired-kill-subdir)
656 (dired-kill-line arg))
657 (save-excursion
658 (goto-char (point-min))
659 (let (buffer-read-only
660 (count 0)
661 (regexp (dired-marker-regexp)))
662 (while (and (not (eobp))
663 (re-search-forward regexp nil t))
664 (setq count (1+ count))
665 (delete-region (progn (beginning-of-line) (point))
666 (progn (forward-line 1) (point))))
667 (or (equal "" fmt)
668 (message (or fmt "Killed %d line%s.") count (dired-plural-s count)))
669 count))))
671 ;;;###end dired-cmd.el
673 ;;; 30K
674 ;;;###begin dired-cp.el
676 (defun dired-compress ()
677 ;; Compress or uncompress the current file.
678 ;; Return nil for success, offending filename else.
679 (let* (buffer-read-only
680 (from-file (dired-get-filename))
681 (new-file (dired-compress-file from-file)))
682 (if new-file
683 (let ((start (point)))
684 ;; Remove any preexisting entry for the name NEW-FILE.
685 (condition-case nil
686 (dired-remove-entry new-file)
687 (error nil))
688 (goto-char start)
689 ;; Now replace the current line with an entry for NEW-FILE.
690 (dired-update-file-line new-file) nil)
691 (dired-log (concat "Failed to compress" from-file))
692 from-file)))
694 (defvar dired-compress-file-suffixes
695 '(("\\.gz\\'" "" "gunzip")
696 ("\\.tgz\\'" ".tar" "gunzip")
697 ("\\.Z\\'" "" "uncompress")
698 ;; For .z, try gunzip. It might be an old gzip file,
699 ;; or it might be from compact? pack? (which?) but gunzip handles both.
700 ("\\.z\\'" "" "gunzip")
701 ("\\.dz\\'" "" "dictunzip")
702 ("\\.tbz\\'" ".tar" "bunzip2")
703 ("\\.bz2\\'" "" "bunzip2")
704 ;; This item controls naming for compression.
705 ("\\.tar\\'" ".tgz" nil))
706 "Control changes in file name suffixes for compression and uncompression.
707 Each element specifies one transformation rule, and has the form:
708 (REGEXP NEW-SUFFIX PROGRAM)
709 The rule applies when the old file name matches REGEXP.
710 The new file name is computed by deleting the part that matches REGEXP
711 (as well as anything after that), then adding NEW-SUFFIX in its place.
712 If PROGRAM is non-nil, the rule is an uncompression rule,
713 and uncompression is done by running PROGRAM.
714 Otherwise, the rule is a compression rule, and compression is done with gzip.")
716 ;;;###autoload
717 (defun dired-compress-file (file)
718 ;; Compress or uncompress FILE.
719 ;; Return the name of the compressed or uncompressed file.
720 ;; Return nil if no change in files.
721 (let ((handler (find-file-name-handler file 'dired-compress-file))
722 suffix newname
723 (suffixes dired-compress-file-suffixes))
724 ;; See if any suffix rule matches this file name.
725 (while suffixes
726 (let (case-fold-search)
727 (if (string-match (car (car suffixes)) file)
728 (setq suffix (car suffixes) suffixes nil))
729 (setq suffixes (cdr suffixes))))
730 ;; If so, compute desired new name.
731 (if suffix
732 (setq newname (concat (substring file 0 (match-beginning 0))
733 (nth 1 suffix))))
734 (cond (handler
735 (funcall handler 'dired-compress-file file))
736 ((file-symlink-p file)
737 nil)
738 ((and suffix (nth 2 suffix))
739 ;; We found an uncompression rule.
740 (if (not (dired-check-process (concat "Uncompressing " file)
741 (nth 2 suffix) file))
742 newname))
744 ;;; We don't recognize the file as compressed, so compress it.
745 ;;; Try gzip; if we don't have that, use compress.
746 (condition-case nil
747 (if (not (dired-check-process (concat "Compressing " file)
748 "gzip" "-f" file))
749 (let ((out-name
750 (if (file-exists-p (concat file ".gz"))
751 (concat file ".gz")
752 (concat file ".z"))))
753 ;; Rename the compressed file to NEWNAME
754 ;; if it hasn't got that name already.
755 (if (and newname (not (equal newname out-name)))
756 (progn
757 (rename-file out-name newname t)
758 newname)
759 out-name)))
760 (file-error
761 (if (not (dired-check-process (concat "Compressing " file)
762 "compress" "-f" file))
763 ;; Don't use NEWNAME with `compress'.
764 (concat file ".Z"))))))))
766 (defun dired-mark-confirm (op-symbol arg)
767 ;; Request confirmation from the user that the operation described
768 ;; by OP-SYMBOL is to be performed on the marked files.
769 ;; Confirmation consists in a y-or-n question with a file list
770 ;; pop-up unless OP-SYMBOL is a member of `dired-no-confirm'.
771 ;; The files used are determined by ARG (as in dired-get-marked-files).
772 (or (eq dired-no-confirm t)
773 (memq op-symbol dired-no-confirm)
774 ;; Pass t for DISTINGUISH-ONE-MARKED so that a single file which
775 ;; is marked pops up a window. That will help the user see
776 ;; it isn't the current line file.
777 (let ((files (dired-get-marked-files t arg nil t))
778 (string (if (eq op-symbol 'compress) "Compress or uncompress"
779 (capitalize (symbol-name op-symbol)))))
780 (dired-mark-pop-up nil op-symbol files (function y-or-n-p)
781 (concat string " "
782 (dired-mark-prompt arg files) "? ")))))
784 (defun dired-map-over-marks-check (fun arg op-symbol &optional show-progress)
785 ; "Map FUN over marked files (with second ARG like in dired-map-over-marks)
786 ; and display failures.
788 ; FUN takes zero args. It returns non-nil (the offending object, e.g.
789 ; the short form of the filename) for a failure and probably logs a
790 ; detailed error explanation using function `dired-log'.
792 ; OP-SYMBOL is a symbol describing the operation performed (e.g.
793 ; `compress'). It is used with `dired-mark-pop-up' to prompt the user
794 ; (e.g. with `Compress * [2 files]? ') and to display errors (e.g.
795 ; `Failed to compress 1 of 2 files - type W to see why ("foo")')
797 ; SHOW-PROGRESS if non-nil means redisplay dired after each file."
798 (if (dired-mark-confirm op-symbol arg)
799 (let* ((total-list;; all of FUN's return values
800 (dired-map-over-marks (funcall fun) arg show-progress))
801 (total (length total-list))
802 (failures (delq nil total-list))
803 (count (length failures))
804 (string (if (eq op-symbol 'compress) "Compress or uncompress"
805 (capitalize (symbol-name op-symbol)))))
806 (if (not failures)
807 (message "%s: %d file%s."
808 string total (dired-plural-s total))
809 ;; end this bunch of errors:
810 (dired-log-summary
811 (format "Failed to %s %d of %d file%s"
812 (downcase string) count total (dired-plural-s total))
813 failures)))))
815 (defvar dired-query-alist
816 '((?\y . y) (?\040 . y) ; `y' or SPC means accept once
817 (?n . n) (?\177 . n) ; `n' or DEL skips once
818 (?! . yes) ; `!' accepts rest
819 (?q . no) (?\e . no) ; `q' or ESC skips rest
820 ;; None of these keys quit - use C-g for that.
823 ;;;###autoload
824 (defun dired-query (qs-var qs-prompt &rest qs-args)
825 ;; Query user and return nil or t.
826 ;; Store answer in symbol VAR (which must initially be bound to nil).
827 ;; Format PROMPT with ARGS.
828 ;; Binding variable help-form will help the user who types the help key.
829 (let* ((char (symbol-value qs-var))
830 (action (cdr (assoc char dired-query-alist))))
831 (cond ((eq 'yes action)
832 t) ; accept, and don't ask again
833 ((eq 'no action)
834 nil) ; skip, and don't ask again
835 (t;; no lasting effects from last time we asked - ask now
836 (let ((qprompt (concat qs-prompt
837 (if help-form
838 (format " [Type yn!q or %s] "
839 (key-description
840 (char-to-string help-char)))
841 " [Type y, n, q or !] ")))
842 result elt)
843 ;; Actually it looks nicer without cursor-in-echo-area - you can
844 ;; look at the dired buffer instead of at the prompt to decide.
845 (apply 'message qprompt qs-args)
846 (setq char (set qs-var (read-char)))
847 (while (not (setq elt (assoc char dired-query-alist)))
848 (message "Invalid char - type %c for help." help-char)
849 (ding)
850 (sit-for 1)
851 (apply 'message qprompt qs-args)
852 (setq char (set qs-var (read-char))))
853 ;; Display the question with the answer.
854 (message "%s" (concat (apply 'format qprompt qs-args)
855 (char-to-string char)))
856 (memq (cdr elt) '(t y yes)))))))
858 ;;;###autoload
859 (defun dired-do-compress (&optional arg)
860 "Compress or uncompress marked (or next ARG) files."
861 (interactive "P")
862 (dired-map-over-marks-check (function dired-compress) arg 'compress t))
864 ;; Commands for Emacs Lisp files - load and byte compile
866 (defun dired-byte-compile ()
867 ;; Return nil for success, offending file name else.
868 (let* ((filename (dired-get-filename))
869 elc-file buffer-read-only failure)
870 (condition-case err
871 (save-excursion (byte-compile-file filename))
872 (error
873 (setq failure err)))
874 (setq elc-file (byte-compile-dest-file filename))
875 (or (file-exists-p elc-file)
876 (setq failure t))
877 (if failure
878 (progn
879 (dired-log "Byte compile error for %s:\n%s\n" filename failure)
880 (dired-make-relative filename))
881 (dired-remove-file elc-file)
882 (forward-line) ; insert .elc after its .el file
883 (dired-add-file elc-file)
884 nil)))
886 ;;;###autoload
887 (defun dired-do-byte-compile (&optional arg)
888 "Byte compile marked (or next ARG) Emacs Lisp files."
889 (interactive "P")
890 (dired-map-over-marks-check (function dired-byte-compile) arg 'byte-compile t))
892 (defun dired-load ()
893 ;; Return nil for success, offending file name else.
894 (let ((file (dired-get-filename)) failure)
895 (condition-case err
896 (load file nil nil t)
897 (error (setq failure err)))
898 (if (not failure)
900 (dired-log "Load error for %s:\n%s\n" file failure)
901 (dired-make-relative file))))
903 ;;;###autoload
904 (defun dired-do-load (&optional arg)
905 "Load the marked (or next ARG) Emacs Lisp files."
906 (interactive "P")
907 (dired-map-over-marks-check (function dired-load) arg 'load t))
909 ;;;###autoload
910 (defun dired-do-redisplay (&optional arg test-for-subdir)
911 "Redisplay all marked (or next ARG) files.
912 If on a subdir line, redisplay that subdirectory. In that case,
913 a prefix arg lets you edit the `ls' switches used for the new listing.
915 Dired remembers switches specified with a prefix arg, so that reverting
916 the buffer will not reset them. However, using `dired-undo' to re-insert
917 or delete subdirectories can bypass this machinery. Hence, you sometimes
918 may have to reset some subdirectory switches after a `dired-undo'.
919 You can reset all subdirectory switches to the default using
920 \\<dired-mode-map>\\[dired-reset-subdir-switches].
921 See Info node `(emacs-xtra)Subdir switches' for more details."
922 ;; Moves point if the next ARG files are redisplayed.
923 (interactive "P\np")
924 (if (and test-for-subdir (dired-get-subdir))
925 (let* ((dir (dired-get-subdir))
926 (switches (cdr (assoc-string dir dired-switches-alist))))
927 (dired-insert-subdir
929 (when arg
930 (read-string "Switches for listing: "
931 (or switches
932 dired-subdir-switches
933 dired-actual-switches)))))
934 (message "Redisplaying...")
935 ;; message much faster than making dired-map-over-marks show progress
936 (dired-uncache
937 (if (consp dired-directory) (car dired-directory) dired-directory))
938 (dired-map-over-marks (let ((fname (dired-get-filename)))
939 (message "Redisplaying... %s" fname)
940 (dired-update-file-line fname))
941 arg)
942 (dired-move-to-filename)
943 (message "Redisplaying...done")))
945 (defun dired-reset-subdir-switches ()
946 "Set `dired-switches-alist' to nil and revert dired buffer."
947 (interactive)
948 (setq dired-switches-alist nil)
949 (revert-buffer))
951 (defun dired-update-file-line (file)
952 ;; Delete the current line, and insert an entry for FILE.
953 ;; If FILE is nil, then just delete the current line.
954 ;; Keeps any marks that may be present in column one (doing this
955 ;; here is faster than with dired-add-entry's optional arg).
956 ;; Does not update other dired buffers. Use dired-relist-entry for that.
957 (beginning-of-line)
958 (let ((char (following-char)) (opoint (point))
959 (buffer-read-only))
960 (delete-region (point) (progn (forward-line 1) (point)))
961 (if file
962 (progn
963 (dired-add-entry file nil t)
964 ;; Replace space by old marker without moving point.
965 ;; Faster than goto+insdel inside a save-excursion?
966 (subst-char-in-region opoint (1+ opoint) ?\040 char))))
967 (dired-move-to-filename))
969 ;;;###autoload
970 (defun dired-add-file (filename &optional marker-char)
971 (dired-fun-in-all-buffers
972 (file-name-directory filename) (file-name-nondirectory filename)
973 (function dired-add-entry) filename marker-char))
975 (defun dired-add-entry (filename &optional marker-char relative)
976 ;; Add a new entry for FILENAME, optionally marking it
977 ;; with MARKER-CHAR (a character, else dired-marker-char is used).
978 ;; Note that this adds the entry `out of order' if files sorted by
979 ;; time, etc.
980 ;; At least this version inserts in the right subdirectory (if present).
981 ;; And it skips "." or ".." (see `dired-trivial-filenames').
982 ;; Hidden subdirs are exposed if a file is added there.
983 (setq filename (directory-file-name filename))
984 ;; Entry is always for files, even if they happen to also be directories
985 (let* ((opoint (point))
986 (cur-dir (dired-current-directory))
987 (orig-file-name filename)
988 (directory (if relative cur-dir (file-name-directory filename)))
989 reason)
990 (setq filename
991 (if relative
992 (file-relative-name filename directory)
993 (file-name-nondirectory filename))
994 reason
995 (catch 'not-found
996 (if (string= directory cur-dir)
997 (progn
998 (skip-chars-forward "^\r\n")
999 (if (eq (following-char) ?\r)
1000 (dired-unhide-subdir))
1001 ;; We are already where we should be, except when
1002 ;; point is before the subdir line or its total line.
1003 (let ((p (dired-after-subdir-garbage cur-dir)))
1004 (if (< (point) p)
1005 (goto-char p))))
1006 ;; else try to find correct place to insert
1007 (if (dired-goto-subdir directory)
1008 (progn ;; unhide if necessary
1009 (if (looking-at "\r") ;; point is at end of subdir line
1010 (dired-unhide-subdir))
1011 ;; found - skip subdir and `total' line
1012 ;; and uninteresting files like . and ..
1013 ;; This better not moves into the next subdir!
1014 (dired-goto-next-nontrivial-file))
1015 ;; not found
1016 (throw 'not-found "Subdir not found")))
1017 (let (buffer-read-only opoint)
1018 (beginning-of-line)
1019 (setq opoint (point))
1020 ;; Don't expand `.'. Show just the file name within directory.
1021 (let ((default-directory directory))
1022 (dired-insert-directory directory
1023 (concat dired-actual-switches "d")
1024 (list filename)))
1025 (goto-char opoint)
1026 ;; Put in desired marker char.
1027 (when marker-char
1028 (let ((dired-marker-char
1029 (if (integerp marker-char) marker-char dired-marker-char)))
1030 (dired-mark nil)))
1031 ;; Compensate for a bug in ange-ftp.
1032 ;; It inserts the file's absolute name, rather than
1033 ;; the relative one. That may be hard to fix since it
1034 ;; is probably controlled by something in ftp.
1035 (goto-char opoint)
1036 (let ((inserted-name (dired-get-filename 'verbatim)))
1037 (if (file-name-directory inserted-name)
1038 (let (props)
1039 (end-of-line)
1040 (forward-char (- (length inserted-name)))
1041 (setq props (text-properties-at (point)))
1042 (delete-char (length inserted-name))
1043 (let ((pt (point)))
1044 (insert filename)
1045 (set-text-properties pt (point) props))
1046 (forward-char 1))
1047 (forward-line 1)))
1048 (forward-line -1)
1049 (if dired-after-readin-hook ;; the subdir-alist is not affected...
1050 (save-excursion ;; ...so we can run it right now:
1051 (save-restriction
1052 (beginning-of-line)
1053 (narrow-to-region (point) (save-excursion
1054 (forward-line 1) (point)))
1055 (run-hooks 'dired-after-readin-hook))))
1056 (dired-move-to-filename))
1057 ;; return nil if all went well
1058 nil))
1059 (if reason ; don't move away on failure
1060 (goto-char opoint))
1061 (not reason))) ; return t on success, nil else
1063 (defun dired-after-subdir-garbage (dir)
1064 ;; Return pos of first file line of DIR, skipping header and total
1065 ;; or wildcard lines.
1066 ;; Important: never moves into the next subdir.
1067 ;; DIR is assumed to be unhidden.
1068 ;; Will probably be redefined for VMS etc.
1069 (save-excursion
1070 (or (dired-goto-subdir dir) (error "This cannot happen"))
1071 (forward-line 1)
1072 (while (and (not (eolp)) ; don't cross subdir boundary
1073 (not (dired-move-to-filename)))
1074 (forward-line 1))
1075 (point)))
1077 ;;;###autoload
1078 (defun dired-remove-file (file)
1079 (dired-fun-in-all-buffers
1080 (file-name-directory file) (file-name-nondirectory file)
1081 (function dired-remove-entry) file))
1083 (defun dired-remove-entry (file)
1084 (save-excursion
1085 (and (dired-goto-file file)
1086 (let (buffer-read-only)
1087 (delete-region (progn (beginning-of-line) (point))
1088 (save-excursion (forward-line 1) (point)))))))
1090 ;;;###autoload
1091 (defun dired-relist-file (file)
1092 "Create or update the line for FILE in all Dired buffers it would belong in."
1093 (dired-fun-in-all-buffers (file-name-directory file)
1094 (file-name-nondirectory file)
1095 (function dired-relist-entry) file))
1097 (defun dired-relist-entry (file)
1098 ;; Relist the line for FILE, or just add it if it did not exist.
1099 ;; FILE must be an absolute file name.
1100 (let (buffer-read-only marker)
1101 ;; If cursor is already on FILE's line delete-region will cause
1102 ;; save-excursion to fail because of floating makers,
1103 ;; moving point to beginning of line. Sigh.
1104 (save-excursion
1105 (and (dired-goto-file file)
1106 (delete-region (progn (beginning-of-line)
1107 (setq marker (following-char))
1108 (point))
1109 (save-excursion (forward-line 1) (point))))
1110 (setq file (directory-file-name file))
1111 (dired-add-entry file (if (eq ?\040 marker) nil marker)))))
1113 ;;; Copy, move/rename, making hard and symbolic links
1115 (defcustom dired-backup-overwrite nil
1116 "*Non-nil if Dired should ask about making backups before overwriting files.
1117 Special value `always' suppresses confirmation."
1118 :type '(choice (const :tag "off" nil)
1119 (const :tag "suppress" always)
1120 (other :tag "ask" t))
1121 :group 'dired)
1123 (defvar dired-overwrite-confirmed)
1125 (defun dired-handle-overwrite (to)
1126 ;; Save old version of file TO that is to be overwritten.
1127 ;; `dired-overwrite-confirmed' and `overwrite-backup-query' are fluid vars
1128 ;; from dired-create-files.
1129 (let (backup)
1130 (if (and dired-backup-overwrite
1131 dired-overwrite-confirmed
1132 (setq backup (car (find-backup-file-name to)))
1133 (or (eq 'always dired-backup-overwrite)
1134 (dired-query 'overwrite-backup-query
1135 "Make backup for existing file `%s'? "
1136 to)))
1137 (progn
1138 (rename-file to backup 0) ; confirm overwrite of old backup
1139 (dired-relist-entry backup)))))
1141 ;;;###autoload
1142 (defun dired-copy-file (from to ok-flag)
1143 (dired-handle-overwrite to)
1144 (condition-case ()
1145 (dired-copy-file-recursive from to ok-flag dired-copy-preserve-time t
1146 dired-recursive-copies)
1147 (file-date-error (message "Can't set date")
1148 (sit-for 1))))
1150 (defun dired-copy-file-recursive (from to ok-flag &optional
1151 preserve-time top recursive)
1152 (let ((attrs (file-attributes from)))
1153 (if (and recursive
1154 (eq t (car attrs))
1155 (or (eq recursive 'always)
1156 (yes-or-no-p (format "Recursive copies of %s? " from))))
1157 ;; This is a directory.
1158 (let ((files (directory-files from nil dired-re-no-dot)))
1159 (if (eq recursive 'top) (setq recursive 'always)) ; Don't ask any more.
1160 (if (file-exists-p to)
1161 (or top (dired-handle-overwrite to))
1162 (make-directory to))
1163 (while files
1164 (dired-copy-file-recursive
1165 (expand-file-name (car files) from)
1166 (expand-file-name (car files) to)
1167 ok-flag preserve-time nil recursive)
1168 (setq files (cdr files))))
1169 ;; Not a directory.
1170 (or top (dired-handle-overwrite to))
1171 (if (stringp (car attrs))
1172 ;; It is a symlink
1173 (make-symbolic-link (car attrs) to ok-flag)
1174 (copy-file from to ok-flag dired-copy-preserve-time)))))
1176 ;;;###autoload
1177 (defun dired-rename-file (file newname ok-if-already-exists)
1178 (dired-handle-overwrite newname)
1179 (rename-file file newname ok-if-already-exists) ; error is caught in -create-files
1180 ;; Silently rename the visited file of any buffer visiting this file.
1181 (and (get-file-buffer file)
1182 (with-current-buffer (get-file-buffer file)
1183 (set-visited-file-name newname nil t)))
1184 (dired-remove-file file)
1185 ;; See if it's an inserted subdir, and rename that, too.
1186 (dired-rename-subdir file newname))
1188 (defun dired-rename-subdir (from-dir to-dir)
1189 (setq from-dir (file-name-as-directory from-dir)
1190 to-dir (file-name-as-directory to-dir))
1191 (dired-fun-in-all-buffers from-dir nil
1192 (function dired-rename-subdir-1) from-dir to-dir)
1193 ;; Update visited file name of all affected buffers
1194 (let ((expanded-from-dir (expand-file-name from-dir))
1195 (blist (buffer-list)))
1196 (while blist
1197 (save-excursion
1198 (set-buffer (car blist))
1199 (if (and buffer-file-name
1200 (dired-in-this-tree buffer-file-name expanded-from-dir))
1201 (let ((modflag (buffer-modified-p))
1202 (to-file (dired-replace-in-string
1203 (concat "^" (regexp-quote from-dir))
1204 to-dir
1205 buffer-file-name)))
1206 (set-visited-file-name to-file)
1207 (set-buffer-modified-p modflag))))
1208 (setq blist (cdr blist)))))
1210 (defun dired-rename-subdir-1 (dir to)
1211 ;; Rename DIR to TO in headerlines and dired-subdir-alist, if DIR or
1212 ;; one of its subdirectories is expanded in this buffer.
1213 (let ((expanded-dir (expand-file-name dir))
1214 (alist dired-subdir-alist)
1215 (elt nil))
1216 (while alist
1217 (setq elt (car alist)
1218 alist (cdr alist))
1219 (if (dired-in-this-tree (car elt) expanded-dir)
1220 ;; ELT's subdir is affected by the rename
1221 (dired-rename-subdir-2 elt dir to)))
1222 (if (equal dir default-directory)
1223 ;; if top level directory was renamed, lots of things have to be
1224 ;; updated:
1225 (progn
1226 (dired-unadvertise dir) ; we no longer dired DIR...
1227 (setq default-directory to
1228 dired-directory (expand-file-name;; this is correct
1229 ;; with and without wildcards
1230 (file-name-nondirectory dired-directory)
1231 to))
1232 (let ((new-name (file-name-nondirectory
1233 (directory-file-name dired-directory))))
1234 ;; try to rename buffer, but just leave old name if new
1235 ;; name would already exist (don't try appending "<%d>")
1236 (or (get-buffer new-name)
1237 (rename-buffer new-name)))
1238 ;; ... we dired TO now:
1239 (dired-advertise)))))
1241 (defun dired-rename-subdir-2 (elt dir to)
1242 ;; Update the headerline and dired-subdir-alist element, as well as
1243 ;; dired-switches-alist element, of directory described by
1244 ;; alist-element ELT to reflect the moving of DIR to TO. Thus, ELT
1245 ;; describes either DIR itself or a subdir of DIR.
1246 (save-excursion
1247 (let ((regexp (regexp-quote (directory-file-name dir)))
1248 (newtext (directory-file-name to))
1249 buffer-read-only)
1250 (goto-char (dired-get-subdir-min elt))
1251 ;; Update subdir headerline in buffer
1252 (if (not (looking-at dired-subdir-regexp))
1253 (error "%s not found where expected - dired-subdir-alist broken?"
1254 dir)
1255 (goto-char (match-beginning 1))
1256 (if (re-search-forward regexp (match-end 1) t)
1257 (replace-match newtext t t)
1258 (error "Expected to find `%s' in headerline of %s" dir (car elt))))
1259 ;; Update buffer-local dired-subdir-alist and dired-switches-alist
1260 (let ((cons (assoc-string (car elt) dired-switches-alist))
1261 (cur-dir (dired-normalize-subdir
1262 (dired-replace-in-string regexp newtext (car elt)))))
1263 (setcar elt cur-dir)
1264 (when cons (setcar cons cur-dir))))))
1266 ;; The basic function for half a dozen variations on cp/mv/ln/ln -s.
1267 (defun dired-create-files (file-creator operation fn-list name-constructor
1268 &optional marker-char)
1270 ;; Create a new file for each from a list of existing files. The user
1271 ;; is queried, dired buffers are updated, and at the end a success or
1272 ;; failure message is displayed
1274 ;; FILE-CREATOR must accept three args: oldfile newfile ok-if-already-exists
1276 ;; It is called for each file and must create newfile, the entry of
1277 ;; which will be added. The user will be queried if the file already
1278 ;; exists. If oldfile is removed by FILE-CREATOR (i.e, it is a
1279 ;; rename), it is FILE-CREATOR's responsibility to update dired
1280 ;; buffers. FILE-CREATOR must abort by signaling a file-error if it
1281 ;; could not create newfile. The error is caught and logged.
1283 ;; OPERATION (a capitalized string, e.g. `Copy') describes the
1284 ;; operation performed. It is used for error logging.
1286 ;; FN-LIST is the list of files to copy (full absolute file names).
1288 ;; NAME-CONSTRUCTOR returns a newfile for every oldfile, or nil to
1289 ;; skip. If it skips files for other reasons than a direct user
1290 ;; query, it is supposed to tell why (using dired-log).
1292 ;; Optional MARKER-CHAR is a character with which to mark every
1293 ;; newfile's entry, or t to use the current marker character if the
1294 ;; oldfile was marked.
1296 (let (failures skipped (success-count 0) (total (length fn-list)))
1297 (let (to overwrite-query
1298 overwrite-backup-query) ; for dired-handle-overwrite
1299 (mapcar
1300 (function
1301 (lambda (from)
1302 (setq to (funcall name-constructor from))
1303 (if (equal to from)
1304 (progn
1305 (setq to nil)
1306 (dired-log "Cannot %s to same file: %s\n"
1307 (downcase operation) from)))
1308 (if (not to)
1309 (setq skipped (cons (dired-make-relative from) skipped))
1310 (let* ((overwrite (file-exists-p to))
1311 (dired-overwrite-confirmed ; for dired-handle-overwrite
1312 (and overwrite
1313 (let ((help-form '(format "\
1314 Type SPC or `y' to overwrite file `%s',
1315 DEL or `n' to skip to next,
1316 ESC or `q' to not overwrite any of the remaining files,
1317 `!' to overwrite all remaining files with no more questions." to)))
1318 (dired-query 'overwrite-query
1319 "Overwrite `%s'?" to))))
1320 ;; must determine if FROM is marked before file-creator
1321 ;; gets a chance to delete it (in case of a move).
1322 (actual-marker-char
1323 (cond ((integerp marker-char) marker-char)
1324 (marker-char (dired-file-marker from)) ; slow
1325 (t nil))))
1326 (condition-case err
1327 (progn
1328 (funcall file-creator from to dired-overwrite-confirmed)
1329 (if overwrite
1330 ;; If we get here, file-creator hasn't been aborted
1331 ;; and the old entry (if any) has to be deleted
1332 ;; before adding the new entry.
1333 (dired-remove-file to))
1334 (setq success-count (1+ success-count))
1335 (message "%s: %d of %d" operation success-count total)
1336 (dired-add-file to actual-marker-char))
1337 (file-error ; FILE-CREATOR aborted
1338 (progn
1339 (setq failures (cons (dired-make-relative from) failures))
1340 (dired-log "%s `%s' to `%s' failed:\n%s\n"
1341 operation from to err))))))))
1342 fn-list))
1343 (cond
1344 (failures
1345 (dired-log-summary
1346 (format "%s failed for %d of %d file%s"
1347 operation (length failures) total
1348 (dired-plural-s total))
1349 failures))
1350 (skipped
1351 (dired-log-summary
1352 (format "%s: %d of %d file%s skipped"
1353 operation (length skipped) total
1354 (dired-plural-s total))
1355 skipped))
1357 (message "%s: %s file%s"
1358 operation success-count (dired-plural-s success-count)))))
1359 (dired-move-to-filename))
1361 (defun dired-do-create-files (op-symbol file-creator operation arg
1362 &optional marker-char op1
1363 how-to)
1364 "Create a new file for each marked file.
1365 Prompts user for target, which is a directory in which to create
1366 the new files. Target may be a plain file if only one marked
1367 file exists. The way the default for the target directory is
1368 computed depends on the value of `dired-dwim-target-directory'.
1369 OP-SYMBOL is the symbol for the operation. Function `dired-mark-pop-up'
1370 will determine whether pop-ups are appropriate for this OP-SYMBOL.
1371 FILE-CREATOR and OPERATION as in `dired-create-files'.
1372 ARG as in `dired-get-marked-files'.
1373 Optional arg MARKER-CHAR as in `dired-create-files'.
1374 Optional arg OP1 is an alternate form for OPERATION if there is
1375 only one file.
1376 Optional arg HOW-TO is used to set the value of the into-dir variable
1377 which determines how to treat target.
1378 If into-dir is set to nil then target is not regarded as a directory,
1379 there must be exactly one marked file, else error.
1380 Else if into-dir is set to a list, then target is a generalized
1381 directory (e.g. some sort of archive). The first element of into-dir
1382 must be a function with at least four arguments:
1383 operation as OPERATION above.
1384 rfn-list a list of the relative names for the marked files.
1385 fn-list a list of the absolute names for the marked files.
1386 target.
1387 The rest of into-dir are optional arguments.
1388 Else into-dir is not a list. Target is a directory.
1389 The marked file(s) are created inside the target directory.
1391 If HOW-TO is not given (or nil), then into-dir is set to true if
1392 target is a directory and otherwise to nil.
1393 Else if HOW-TO is t, then into-dir is set to nil.
1394 Else HOW-TO is assumed to be a function of one argument, target,
1395 that looks at target and returns a value for the into-dir
1396 variable. The function `dired-into-dir-with-symlinks' is provided
1397 for the case (common when creating symlinks) that symbolic
1398 links to directories are not to be considered as directories
1399 (as `file-directory-p' would if HOW-TO had been nil)."
1400 (or op1 (setq op1 operation))
1401 (let* ((fn-list (dired-get-marked-files nil arg))
1402 (rfn-list (mapcar (function dired-make-relative) fn-list))
1403 (dired-one-file ; fluid variable inside dired-create-files
1404 (and (consp fn-list) (null (cdr fn-list)) (car fn-list)))
1405 (target-dir (dired-dwim-target-directory))
1406 (default (and dired-one-file
1407 (expand-file-name (file-name-nondirectory (car fn-list))
1408 target-dir)))
1409 (target (expand-file-name ; fluid variable inside dired-create-files
1410 (dired-mark-read-file-name
1411 (concat (if dired-one-file op1 operation) " %s to: ")
1412 target-dir op-symbol arg rfn-list default)))
1413 (into-dir (cond ((null how-to)
1414 ;; Allow DOS/Windows users to change the letter
1415 ;; case of a directory. If we don't test these
1416 ;; conditions up front, file-directory-p below
1417 ;; will return t because the filesystem is
1418 ;; case-insensitive, and Emacs will try to move
1419 ;; foo -> foo/foo, which fails.
1420 (if (and (memq system-type '(ms-dos windows-nt cygwin))
1421 (eq op-symbol 'move)
1422 dired-one-file
1423 (string= (downcase
1424 (expand-file-name (car fn-list)))
1425 (downcase
1426 (expand-file-name target)))
1427 (not (string=
1428 (file-name-nondirectory (car fn-list))
1429 (file-name-nondirectory target))))
1431 (file-directory-p target)))
1432 ((eq how-to t) nil)
1433 (t (funcall how-to target)))))
1434 (if (and (consp into-dir) (functionp (car into-dir)))
1435 (apply (car into-dir) operation rfn-list fn-list target (cdr into-dir))
1436 (if (not (or dired-one-file into-dir))
1437 (error "Marked %s: target must be a directory: %s" operation target))
1438 ;; rename-file bombs when moving directories unless we do this:
1439 (or into-dir (setq target (directory-file-name target)))
1440 (dired-create-files
1441 file-creator operation fn-list
1442 (if into-dir ; target is a directory
1443 ;; This function uses fluid variable target when called
1444 ;; inside dired-create-files:
1445 (function
1446 (lambda (from)
1447 (expand-file-name (file-name-nondirectory from) target)))
1448 (function (lambda (from) target)))
1449 marker-char))))
1451 ;; Read arguments for a marked-files command that wants a file name,
1452 ;; perhaps popping up the list of marked files.
1453 ;; ARG is the prefix arg and indicates whether the files came from
1454 ;; marks (ARG=nil) or a repeat factor (integerp ARG).
1455 ;; If the current file was used, the list has but one element and ARG
1456 ;; does not matter. (It is non-nil, non-integer in that case, namely '(4)).
1457 ;; DEFAULT is the default value to return if the user just hits RET;
1458 ;; if it is omitted or nil, then the name of the directory is used.
1460 (defun dired-mark-read-file-name (prompt dir op-symbol arg files
1461 &optional default)
1462 (dired-mark-pop-up
1463 nil op-symbol files
1464 (function read-file-name)
1465 (format prompt (dired-mark-prompt arg files)) dir default))
1467 (defun dired-dwim-target-directory ()
1468 ;; Try to guess which target directory the user may want.
1469 ;; If there is a dired buffer displayed in the next window, use
1470 ;; its current subdir, else use current subdir of this dired buffer.
1471 (let ((this-dir (and (eq major-mode 'dired-mode)
1472 (dired-current-directory))))
1473 ;; non-dired buffer may want to profit from this function, e.g. vm-uudecode
1474 (if dired-dwim-target
1475 (let* ((other-buf (window-buffer (next-window)))
1476 (other-dir (save-excursion
1477 (set-buffer other-buf)
1478 (and (eq major-mode 'dired-mode)
1479 (dired-current-directory)))))
1480 (or other-dir this-dir))
1481 this-dir)))
1483 ;;;###autoload
1484 (defun dired-create-directory (directory)
1485 "Create a directory called DIRECTORY."
1486 (interactive
1487 (list (read-file-name "Create directory: " (dired-current-directory))))
1488 (let ((expanded (directory-file-name (expand-file-name directory))))
1489 (make-directory expanded)
1490 (dired-add-file expanded)
1491 (dired-move-to-filename)))
1493 (defun dired-into-dir-with-symlinks (target)
1494 (and (file-directory-p target)
1495 (not (file-symlink-p target))))
1496 ;; This may not always be what you want, especially if target is your
1497 ;; home directory and it happens to be a symbolic link, as is often the
1498 ;; case with NFS and automounters. Or if you want to make symlinks
1499 ;; into directories that themselves are only symlinks, also quite
1500 ;; common.
1502 ;; So we don't use this function as value for HOW-TO in
1503 ;; dired-do-symlink, which has the minor disadvantage of
1504 ;; making links *into* a symlinked-dir, when you really wanted to
1505 ;; *overwrite* that symlink. In that (rare, I guess) case, you'll
1506 ;; just have to remove that symlink by hand before making your marked
1507 ;; symlinks.
1509 (defvar dired-copy-how-to-fn nil
1510 "nil or a function used by `dired-do-copy' to determine target.
1511 See HOW-TO argument for `dired-do-create-files'.")
1513 ;;;###autoload
1514 (defun dired-do-copy (&optional arg)
1515 "Copy all marked (or next ARG) files, or copy the current file.
1516 This normally preserves the last-modified date when copying.
1517 When operating on just the current file, you specify the new name.
1518 When operating on multiple or marked files, you specify a directory,
1519 and new copies of these files are made in that directory
1520 with the same names that the files currently have. The default
1521 suggested for the target directory depends on the value of
1522 `dired-dwim-target', which see."
1523 (interactive "P")
1524 (let ((dired-recursive-copies dired-recursive-copies))
1525 (dired-do-create-files 'copy (function dired-copy-file)
1526 "Copy"
1527 arg dired-keep-marker-copy
1528 nil dired-copy-how-to-fn)))
1530 ;;;###autoload
1531 (defun dired-do-symlink (&optional arg)
1532 "Make symbolic links to current file or all marked (or next ARG) files.
1533 When operating on just the current file, you specify the new name.
1534 When operating on multiple or marked files, you specify a directory
1535 and new symbolic links are made in that directory
1536 with the same names that the files currently have. The default
1537 suggested for the target directory depends on the value of
1538 `dired-dwim-target', which see."
1539 (interactive "P")
1540 (dired-do-create-files 'symlink (function make-symbolic-link)
1541 "Symlink" arg dired-keep-marker-symlink))
1543 ;;;###autoload
1544 (defun dired-do-hardlink (&optional arg)
1545 "Add names (hard links) current file or all marked (or next ARG) files.
1546 When operating on just the current file, you specify the new name.
1547 When operating on multiple or marked files, you specify a directory
1548 and new hard links are made in that directory
1549 with the same names that the files currently have. The default
1550 suggested for the target directory depends on the value of
1551 `dired-dwim-target', which see."
1552 (interactive "P")
1553 (dired-do-create-files 'hardlink (function dired-hardlink)
1554 "Hardlink" arg dired-keep-marker-hardlink))
1556 (defun dired-hardlink (file newname &optional ok-if-already-exists)
1557 (dired-handle-overwrite newname)
1558 ;; error is caught in -create-files
1559 (add-name-to-file file newname ok-if-already-exists)
1560 ;; Update the link count
1561 (dired-relist-file file))
1563 ;;;###autoload
1564 (defun dired-do-rename (&optional arg)
1565 "Rename current file or all marked (or next ARG) files.
1566 When renaming just the current file, you specify the new name.
1567 When renaming multiple or marked files, you specify a directory.
1568 This command also renames any buffers that are visiting the files.
1569 The default suggested for the target directory depends on the value
1570 of `dired-dwim-target', which see."
1571 (interactive "P")
1572 (dired-do-create-files 'move (function dired-rename-file)
1573 "Move" arg dired-keep-marker-rename "Rename"))
1574 ;;;###end dired-cp.el
1576 ;;; 5K
1577 ;;;###begin dired-re.el
1578 (defun dired-do-create-files-regexp
1579 (file-creator operation arg regexp newname &optional whole-name marker-char)
1580 ;; Create a new file for each marked file using regexps.
1581 ;; FILE-CREATOR and OPERATION as in dired-create-files.
1582 ;; ARG as in dired-get-marked-files.
1583 ;; Matches each marked file against REGEXP and constructs the new
1584 ;; filename from NEWNAME (like in function replace-match).
1585 ;; Optional arg WHOLE-NAME means match/replace the whole file name
1586 ;; instead of only the non-directory part of the file.
1587 ;; Optional arg MARKER-CHAR as in dired-create-files.
1588 (let* ((fn-list (dired-get-marked-files nil arg))
1589 (fn-count (length fn-list))
1590 (operation-prompt (concat operation " `%s' to `%s'?"))
1591 (rename-regexp-help-form (format "\
1592 Type SPC or `y' to %s one match, DEL or `n' to skip to next,
1593 `!' to %s all remaining matches with no more questions."
1594 (downcase operation)
1595 (downcase operation)))
1596 (regexp-name-constructor
1597 ;; Function to construct new filename using REGEXP and NEWNAME:
1598 (if whole-name ; easy (but rare) case
1599 (function
1600 (lambda (from)
1601 (let ((to (dired-string-replace-match regexp from newname))
1602 ;; must bind help-form directly around call to
1603 ;; dired-query
1604 (help-form rename-regexp-help-form))
1605 (if to
1606 (and (dired-query 'rename-regexp-query
1607 operation-prompt
1608 from
1611 (dired-log "%s: %s did not match regexp %s\n"
1612 operation from regexp)))))
1613 ;; not whole-name, replace non-directory part only
1614 (function
1615 (lambda (from)
1616 (let* ((new (dired-string-replace-match
1617 regexp (file-name-nondirectory from) newname))
1618 (to (and new ; nil means there was no match
1619 (expand-file-name new
1620 (file-name-directory from))))
1621 (help-form rename-regexp-help-form))
1622 (if to
1623 (and (dired-query 'rename-regexp-query
1624 operation-prompt
1625 (dired-make-relative from)
1626 (dired-make-relative to))
1628 (dired-log "%s: %s did not match regexp %s\n"
1629 operation (file-name-nondirectory from) regexp)))))))
1630 rename-regexp-query)
1631 (dired-create-files
1632 file-creator operation fn-list regexp-name-constructor marker-char)))
1634 (defun dired-mark-read-regexp (operation)
1635 ;; Prompt user about performing OPERATION.
1636 ;; Read and return list of: regexp newname arg whole-name.
1637 (let* ((whole-name
1638 (equal 0 (prefix-numeric-value current-prefix-arg)))
1639 (arg
1640 (if whole-name nil current-prefix-arg))
1641 (regexp
1642 (dired-read-regexp
1643 (concat (if whole-name "Abs. " "") operation " from (regexp): ")))
1644 (newname
1645 (read-string
1646 (concat (if whole-name "Abs. " "") operation " " regexp " to: "))))
1647 (list regexp newname arg whole-name)))
1649 ;;;###autoload
1650 (defun dired-do-rename-regexp (regexp newname &optional arg whole-name)
1651 "Rename selected files whose names match REGEXP to NEWNAME.
1653 With non-zero prefix argument ARG, the command operates on the next ARG
1654 files. Otherwise, it operates on all the marked files, or the current
1655 file if none are marked.
1657 As each match is found, the user must type a character saying
1658 what to do with it. For directions, type \\[help-command] at that time.
1659 NEWNAME may contain \\=\\<n> or \\& as in `query-replace-regexp'.
1660 REGEXP defaults to the last regexp used.
1662 With a zero prefix arg, renaming by regexp affects the absolute file name.
1663 Normally, only the non-directory part of the file name is used and changed."
1664 (interactive (dired-mark-read-regexp "Rename"))
1665 (dired-do-create-files-regexp
1666 (function dired-rename-file)
1667 "Rename" arg regexp newname whole-name dired-keep-marker-rename))
1669 ;;;###autoload
1670 (defun dired-do-copy-regexp (regexp newname &optional arg whole-name)
1671 "Copy selected files whose names match REGEXP to NEWNAME.
1672 See function `dired-do-rename-regexp' for more info."
1673 (interactive (dired-mark-read-regexp "Copy"))
1674 (let ((dired-recursive-copies nil)) ; No recursive copies.
1675 (dired-do-create-files-regexp
1676 (function dired-copy-file)
1677 (if dired-copy-preserve-time "Copy [-p]" "Copy")
1678 arg regexp newname whole-name dired-keep-marker-copy)))
1680 ;;;###autoload
1681 (defun dired-do-hardlink-regexp (regexp newname &optional arg whole-name)
1682 "Hardlink selected files whose names match REGEXP to NEWNAME.
1683 See function `dired-do-rename-regexp' for more info."
1684 (interactive (dired-mark-read-regexp "HardLink"))
1685 (dired-do-create-files-regexp
1686 (function add-name-to-file)
1687 "HardLink" arg regexp newname whole-name dired-keep-marker-hardlink))
1689 ;;;###autoload
1690 (defun dired-do-symlink-regexp (regexp newname &optional arg whole-name)
1691 "Symlink selected files whose names match REGEXP to NEWNAME.
1692 See function `dired-do-rename-regexp' for more info."
1693 (interactive (dired-mark-read-regexp "SymLink"))
1694 (dired-do-create-files-regexp
1695 (function make-symbolic-link)
1696 "SymLink" arg regexp newname whole-name dired-keep-marker-symlink))
1698 (defun dired-create-files-non-directory
1699 (file-creator basename-constructor operation arg)
1700 ;; Perform FILE-CREATOR on the non-directory part of marked files
1701 ;; using function BASENAME-CONSTRUCTOR, with query for each file.
1702 ;; OPERATION like in dired-create-files, ARG as in dired-get-marked-files.
1703 (let (rename-non-directory-query)
1704 (dired-create-files
1705 file-creator
1706 operation
1707 (dired-get-marked-files nil arg)
1708 (function
1709 (lambda (from)
1710 (let ((to (concat (file-name-directory from)
1711 (funcall basename-constructor
1712 (file-name-nondirectory from)))))
1713 (and (let ((help-form (format "\
1714 Type SPC or `y' to %s one file, DEL or `n' to skip to next,
1715 `!' to %s all remaining matches with no more questions."
1716 (downcase operation)
1717 (downcase operation))))
1718 (dired-query 'rename-non-directory-query
1719 (concat operation " `%s' to `%s'")
1720 (dired-make-relative from)
1721 (dired-make-relative to)))
1722 to))))
1723 dired-keep-marker-rename)))
1725 (defun dired-rename-non-directory (basename-constructor operation arg)
1726 (dired-create-files-non-directory
1727 (function dired-rename-file)
1728 basename-constructor operation arg))
1730 ;;;###autoload
1731 (defun dired-upcase (&optional arg)
1732 "Rename all marked (or next ARG) files to upper case."
1733 (interactive "P")
1734 (dired-rename-non-directory (function upcase) "Rename upcase" arg))
1736 ;;;###autoload
1737 (defun dired-downcase (&optional arg)
1738 "Rename all marked (or next ARG) files to lower case."
1739 (interactive "P")
1740 (dired-rename-non-directory (function downcase) "Rename downcase" arg))
1742 ;;;###end dired-re.el
1744 ;;; 13K
1745 ;;;###begin dired-ins.el
1747 ;;;###autoload
1748 (defun dired-maybe-insert-subdir (dirname &optional
1749 switches no-error-if-not-dir-p)
1750 "Insert this subdirectory into the same dired buffer.
1751 If it is already present, just move to it (type \\[dired-do-redisplay] to refresh),
1752 else inserts it at its natural place (as `ls -lR' would have done).
1753 With a prefix arg, you may edit the ls switches used for this listing.
1754 You can add `R' to the switches to expand the whole tree starting at
1755 this subdirectory.
1756 This function takes some pains to conform to `ls -lR' output.
1758 Dired remembers switches specified with a prefix arg, so that reverting
1759 the buffer will not reset them. However, using `dired-undo' to re-insert
1760 or delete subdirectories can bypass this machinery. Hence, you sometimes
1761 may have to reset some subdirectory switches after a `dired-undo'.
1762 You can reset all subdirectory switches to the default using
1763 \\<dired-mode-map>\\[dired-reset-subdir-switches].
1764 See Info node `(emacs-xtra)Subdir switches' for more details."
1765 (interactive
1766 (list (dired-get-filename)
1767 (if current-prefix-arg
1768 (read-string "Switches for listing: "
1769 (or dired-subdir-switches dired-actual-switches)))))
1770 (let ((opoint (point)))
1771 ;; We don't need a marker for opoint as the subdir is always
1772 ;; inserted *after* opoint.
1773 (setq dirname (file-name-as-directory dirname))
1774 (or (and (not switches)
1775 (dired-goto-subdir dirname))
1776 (dired-insert-subdir dirname switches no-error-if-not-dir-p))
1777 ;; Push mark so that it's easy to find back. Do this after the
1778 ;; insert message so that the user sees the `Mark set' message.
1779 (push-mark opoint)))
1781 ;;;###autoload
1782 (defun dired-insert-subdir (dirname &optional switches no-error-if-not-dir-p)
1783 "Insert this subdirectory into the same dired buffer.
1784 If it is already present, overwrites previous entry,
1785 else inserts it at its natural place (as `ls -lR' would have done).
1786 With a prefix arg, you may edit the `ls' switches used for this listing.
1787 You can add `R' to the switches to expand the whole tree starting at
1788 this subdirectory.
1789 This function takes some pains to conform to `ls -lR' output."
1790 ;; NO-ERROR-IF-NOT-DIR-P needed for special filesystems like
1791 ;; Prospero where dired-ls does the right thing, but
1792 ;; file-directory-p has not been redefined.
1793 (interactive
1794 (list (dired-get-filename)
1795 (if current-prefix-arg
1796 (read-string "Switches for listing: "
1797 (or dired-subdir-switches dired-actual-switches)))))
1798 (setq dirname (file-name-as-directory (expand-file-name dirname)))
1799 (or no-error-if-not-dir-p
1800 (file-directory-p dirname)
1801 (error "Attempt to insert a non-directory: %s" dirname))
1802 (let ((elt (assoc dirname dired-subdir-alist))
1803 (cons (assoc-string dirname dired-switches-alist))
1804 (modflag (buffer-modified-p))
1805 (old-switches switches)
1806 switches-have-R mark-alist case-fold-search buffer-read-only)
1807 (and (not switches) cons (setq switches (cdr cons)))
1808 (dired-insert-subdir-validate dirname switches)
1809 ;; case-fold-search is nil now, so we can test for capital `R':
1810 (if (setq switches-have-R (and switches (string-match "R" switches)))
1811 ;; avoid duplicated subdirs
1812 (setq mark-alist (dired-kill-tree dirname t)))
1813 (if elt
1814 ;; If subdir is already present, remove it and remember its marks
1815 (setq mark-alist (nconc (dired-insert-subdir-del elt) mark-alist))
1816 (dired-insert-subdir-newpos dirname)) ; else compute new position
1817 (dired-insert-subdir-doupdate
1818 dirname elt (dired-insert-subdir-doinsert dirname switches))
1819 (when old-switches
1820 (if cons
1821 (setcdr cons switches)
1822 (push (cons dirname switches) dired-switches-alist)))
1823 (when switches-have-R
1824 (dired-build-subdir-alist switches)
1825 (setq switches (dired-replace-in-string "R" "" switches))
1826 (dolist (cur-ass dired-subdir-alist)
1827 (let ((cur-dir (car cur-ass)))
1828 (and (dired-in-this-tree cur-dir dirname)
1829 (let ((cur-cons (assoc-string cur-dir dired-switches-alist)))
1830 (if cur-cons
1831 (setcdr cur-cons switches)
1832 (push (cons cur-dir switches) dired-switches-alist)))))))
1833 (dired-initial-position dirname)
1834 (save-excursion (dired-mark-remembered mark-alist))
1835 (restore-buffer-modified-p modflag)))
1837 ;; This is a separate function for dired-vms.
1838 (defun dired-insert-subdir-validate (dirname &optional switches)
1839 ;; Check that it is valid to insert DIRNAME with SWITCHES.
1840 ;; Signal an error if invalid (e.g. user typed `i' on `..').
1841 (or (dired-in-this-tree dirname (expand-file-name default-directory))
1842 (error "%s: not in this directory tree" dirname))
1843 (let ((real-switches (or switches dired-subdir-switches)))
1844 (when real-switches
1845 (let (case-fold-search)
1846 (mapcar
1847 (function
1848 (lambda (x)
1849 (or (eq (null (string-match x real-switches))
1850 (null (string-match x dired-actual-switches)))
1851 (error
1852 "Can't have dirs with and without -%s switches together" x))))
1853 ;; all switches that make a difference to dired-get-filename:
1854 '("F" "b"))))))
1856 (defun dired-alist-add (dir new-marker)
1857 ;; Add new DIR at NEW-MARKER. Sort alist.
1858 (dired-alist-add-1 dir new-marker)
1859 (dired-alist-sort))
1861 (defun dired-alist-sort ()
1862 ;; Keep the alist sorted on buffer position.
1863 (setq dired-subdir-alist
1864 (sort dired-subdir-alist
1865 (function (lambda (elt1 elt2)
1866 (> (dired-get-subdir-min elt1)
1867 (dired-get-subdir-min elt2)))))))
1869 (defun dired-kill-tree (dirname &optional remember-marks kill-root)
1870 "Kill all proper subdirs of DIRNAME, excluding DIRNAME itself.
1871 Interactively, you can kill DIRNAME as well by using a prefix argument.
1872 In interactive use, the command prompts for DIRNAME.
1874 When called from Lisp, if REMEMBER-MARKS is non-nil, return an alist
1875 of marked files. If KILL-ROOT is non-nil, kill DIRNAME as well."
1876 (interactive "DKill tree below directory: \ni\nP")
1877 (setq dirname (file-name-as-directory (expand-file-name dirname)))
1878 (let ((s-alist dired-subdir-alist) dir m-alist)
1879 (while s-alist
1880 (setq dir (car (car s-alist))
1881 s-alist (cdr s-alist))
1882 (and (or kill-root (not (string-equal dir dirname)))
1883 (dired-in-this-tree dir dirname)
1884 (dired-goto-subdir dir)
1885 (setq m-alist (nconc (dired-kill-subdir remember-marks) m-alist))))
1886 m-alist))
1888 (defun dired-insert-subdir-newpos (new-dir)
1889 ;; Find pos for new subdir, according to tree order.
1890 ;;(goto-char (point-max))
1891 (let ((alist dired-subdir-alist) elt dir pos new-pos)
1892 (while alist
1893 (setq elt (car alist)
1894 alist (cdr alist)
1895 dir (car elt)
1896 pos (dired-get-subdir-min elt))
1897 (if (dired-tree-lessp dir new-dir)
1898 ;; Insert NEW-DIR after DIR
1899 (setq new-pos (dired-get-subdir-max elt)
1900 alist nil)))
1901 (goto-char new-pos))
1902 ;; want a separating newline between subdirs
1903 (or (eobp)
1904 (forward-line -1))
1905 (insert "\n")
1906 (point))
1908 (defun dired-insert-subdir-del (element)
1909 ;; Erase an already present subdir (given by ELEMENT) from buffer.
1910 ;; Move to that buffer position. Return a mark-alist.
1911 (let ((begin-marker (dired-get-subdir-min element)))
1912 (goto-char begin-marker)
1913 ;; Are at beginning of subdir (and inside it!). Now determine its end:
1914 (goto-char (dired-subdir-max))
1915 (or (eobp);; want a separating newline _between_ subdirs:
1916 (forward-char -1))
1917 (prog1
1918 (dired-remember-marks begin-marker (point))
1919 (delete-region begin-marker (point)))))
1921 (defun dired-insert-subdir-doinsert (dirname switches)
1922 ;; Insert ls output after point.
1923 ;; Return the boundary of the inserted text (as list of BEG and END).
1924 (save-excursion
1925 (let ((begin (point)))
1926 (let ((dired-actual-switches
1927 (or switches
1928 dired-subdir-switches
1929 (dired-replace-in-string "R" "" dired-actual-switches))))
1930 (if (equal dirname (car (car (last dired-subdir-alist))))
1931 ;; If doing the top level directory of the buffer,
1932 ;; redo it as specified in dired-directory.
1933 (dired-readin-insert)
1934 (dired-insert-directory dirname dired-actual-switches nil nil t)))
1935 (list begin (point)))))
1937 (defun dired-insert-subdir-doupdate (dirname elt beg-end)
1938 ;; Point is at the correct subdir alist position for ELT,
1939 ;; BEG-END is the subdir-region (as list of begin and end).
1940 (if elt ; subdir was already present
1941 ;; update its position (should actually be unchanged)
1942 (set-marker (dired-get-subdir-min elt) (point-marker))
1943 (dired-alist-add dirname (point-marker)))
1944 ;; The hook may depend on the subdir-alist containing the just
1945 ;; inserted subdir, so run it after dired-alist-add:
1946 (if dired-after-readin-hook
1947 (save-excursion
1948 (let ((begin (nth 0 beg-end))
1949 (end (nth 1 beg-end)))
1950 (goto-char begin)
1951 (save-restriction
1952 (narrow-to-region begin end)
1953 ;; hook may add or delete lines, but the subdir boundary
1954 ;; marker floats
1955 (run-hooks 'dired-after-readin-hook))))))
1957 (defun dired-tree-lessp (dir1 dir2)
1958 ;; Lexicographic order on file name components, like `ls -lR':
1959 ;; DIR1 < DIR2 iff DIR1 comes *before* DIR2 in an `ls -lR' listing,
1960 ;; i.e., iff DIR1 is a (grand)parent dir of DIR2,
1961 ;; or DIR1 and DIR2 are in the same parentdir and their last
1962 ;; components are string-lessp.
1963 ;; Thus ("/usr/" "/usr/bin") and ("/usr/a/" "/usr/b/") are tree-lessp.
1964 ;; string-lessp could arguably be replaced by file-newer-than-file-p
1965 ;; if dired-actual-switches contained `t'.
1966 (setq dir1 (file-name-as-directory dir1)
1967 dir2 (file-name-as-directory dir2))
1968 (let ((components-1 (dired-split "/" dir1))
1969 (components-2 (dired-split "/" dir2)))
1970 (while (and components-1
1971 components-2
1972 (equal (car components-1) (car components-2)))
1973 (setq components-1 (cdr components-1)
1974 components-2 (cdr components-2)))
1975 (let ((c1 (car components-1))
1976 (c2 (car components-2)))
1978 (cond ((and c1 c2)
1979 (string-lessp c1 c2))
1980 ((and (null c1) (null c2))
1981 nil) ; they are equal, not lessp
1982 ((null c1) ; c2 is a subdir of c1: c1<c2
1984 ((null c2) ; c1 is a subdir of c2: c1>c2
1985 nil)
1986 (t (error "This can't happen"))))))
1988 ;; There should be a builtin split function - inverse to mapconcat.
1989 (defun dired-split (pat str &optional limit)
1990 "Splitting on regexp PAT, turn string STR into a list of substrings.
1991 Optional third arg LIMIT (>= 1) is a limit to the length of the
1992 resulting list.
1993 Thus, if SEP is a regexp that only matches itself,
1995 (mapconcat 'identity (dired-split SEP STRING) SEP)
1997 is always equal to STRING."
1998 (let* ((start (string-match pat str))
1999 (result (list (substring str 0 start)))
2000 (count 1)
2001 (end (if start (match-end 0))))
2002 (if end ; else nothing left
2003 (while (and (or (not (integerp limit))
2004 (< count limit))
2005 (string-match pat str end))
2006 (setq start (match-beginning 0)
2007 count (1+ count)
2008 result (cons (substring str end start) result)
2009 end (match-end 0)
2010 start end)
2012 (if (and (or (not (integerp limit))
2013 (< count limit))
2014 end) ; else nothing left
2015 (setq result
2016 (cons (substring str end) result)))
2017 (nreverse result)))
2019 ;;; moving by subdirectories
2021 ;;;###autoload
2022 (defun dired-prev-subdir (arg &optional no-error-if-not-found no-skip)
2023 "Go to previous subdirectory, regardless of level.
2024 When called interactively and not on a subdir line, go to this subdir's line."
2025 ;;(interactive "p")
2026 (interactive
2027 (list (if current-prefix-arg
2028 (prefix-numeric-value current-prefix-arg)
2029 ;; if on subdir start already, don't stay there!
2030 (if (dired-get-subdir) 1 0))))
2031 (dired-next-subdir (- arg) no-error-if-not-found no-skip))
2033 (defun dired-subdir-min ()
2034 (save-excursion
2035 (if (not (dired-prev-subdir 0 t t))
2036 (error "Not in a subdir!")
2037 (point))))
2039 ;;;###autoload
2040 (defun dired-goto-subdir (dir)
2041 "Go to end of header line of DIR in this dired buffer.
2042 Return value of point on success, otherwise return nil.
2043 The next char is either \\n, or \\r if DIR is hidden."
2044 (interactive
2045 (prog1 ; let push-mark display its message
2046 (list (expand-file-name
2047 (completing-read "Goto in situ directory: " ; prompt
2048 dired-subdir-alist ; table
2049 nil ; predicate
2050 t ; require-match
2051 (dired-current-directory))))
2052 (push-mark)))
2053 (setq dir (file-name-as-directory dir))
2054 (let ((elt (assoc dir dired-subdir-alist)))
2055 (and elt
2056 (goto-char (dired-get-subdir-min elt))
2057 ;; dired-subdir-hidden-p and dired-add-entry depend on point being
2058 ;; at either \r or \n after this function succeeds.
2059 (progn (skip-chars-forward "^\r\n")
2060 (point)))))
2062 ;;;###autoload
2063 (defun dired-mark-subdir-files ()
2064 "Mark all files except `.' and `..' in current subdirectory.
2065 If the Dired buffer shows multiple directories, this command
2066 marks the files listed in the subdirectory that point is in."
2067 (interactive)
2068 (let ((p-min (dired-subdir-min)))
2069 (dired-mark-files-in-region p-min (dired-subdir-max))))
2071 ;;;###autoload
2072 (defun dired-kill-subdir (&optional remember-marks)
2073 "Remove all lines of current subdirectory.
2074 Lower levels are unaffected."
2075 ;; With optional REMEMBER-MARKS, return a mark-alist.
2076 (interactive)
2077 (let* ((beg (dired-subdir-min))
2078 (end (dired-subdir-max))
2079 (modflag (buffer-modified-p))
2080 (cur-dir (dired-current-directory))
2081 (cons (assoc-string cur-dir dired-switches-alist))
2082 buffer-read-only)
2083 (if (equal cur-dir default-directory)
2084 (error "Attempt to kill top level directory"))
2085 (prog1
2086 (if remember-marks (dired-remember-marks beg end))
2087 (delete-region beg end)
2088 (if (eobp) ; don't leave final blank line
2089 (delete-char -1))
2090 (dired-unsubdir cur-dir)
2091 (when cons
2092 (setq dired-switches-alist (delete cons dired-switches-alist)))
2093 (restore-buffer-modified-p modflag))))
2095 (defun dired-unsubdir (dir)
2096 ;; Remove DIR from the alist
2097 (setq dired-subdir-alist
2098 (delq (assoc dir dired-subdir-alist) dired-subdir-alist)))
2100 ;;;###autoload
2101 (defun dired-tree-up (arg)
2102 "Go up ARG levels in the dired tree."
2103 (interactive "p")
2104 (let ((dir (dired-current-directory)))
2105 (while (>= arg 1)
2106 (setq arg (1- arg)
2107 dir (file-name-directory (directory-file-name dir))))
2108 ;;(setq dir (expand-file-name dir))
2109 (or (dired-goto-subdir dir)
2110 (error "Cannot go up to %s - not in this tree" dir))))
2112 ;;;###autoload
2113 (defun dired-tree-down ()
2114 "Go down in the dired tree."
2115 (interactive)
2116 (let ((dir (dired-current-directory)) ; has slash
2117 pos case-fold-search) ; filenames are case sensitive
2118 (let ((rest (reverse dired-subdir-alist)) elt)
2119 (while rest
2120 (setq elt (car rest)
2121 rest (cdr rest))
2122 (if (dired-in-this-tree (directory-file-name (car elt)) dir)
2123 (setq rest nil
2124 pos (dired-goto-subdir (car elt))))))
2125 (if pos
2126 (goto-char pos)
2127 (error "At the bottom"))))
2129 ;;; hiding
2131 (defun dired-unhide-subdir ()
2132 (let (buffer-read-only)
2133 (subst-char-in-region (dired-subdir-min) (dired-subdir-max) ?\r ?\n)))
2135 (defun dired-hide-check ()
2136 (or selective-display
2137 (error "selective-display must be t for subdir hiding to work!")))
2139 (defun dired-subdir-hidden-p (dir)
2140 (and selective-display
2141 (save-excursion
2142 (dired-goto-subdir dir)
2143 (looking-at "\r"))))
2145 ;;;###autoload
2146 (defun dired-hide-subdir (arg)
2147 "Hide or unhide the current subdirectory and move to next directory.
2148 Optional prefix arg is a repeat factor.
2149 Use \\[dired-hide-all] to (un)hide all directories."
2150 (interactive "p")
2151 (dired-hide-check)
2152 (let ((modflag (buffer-modified-p)))
2153 (while (>= (setq arg (1- arg)) 0)
2154 (let* ((cur-dir (dired-current-directory))
2155 (hidden-p (dired-subdir-hidden-p cur-dir))
2156 (elt (assoc cur-dir dired-subdir-alist))
2157 (end-pos (1- (dired-get-subdir-max elt)))
2158 buffer-read-only)
2159 ;; keep header line visible, hide rest
2160 (goto-char (dired-get-subdir-min elt))
2161 (skip-chars-forward "^\n\r")
2162 (if hidden-p
2163 (subst-char-in-region (point) end-pos ?\r ?\n)
2164 (subst-char-in-region (point) end-pos ?\n ?\r)))
2165 (dired-next-subdir 1 t))
2166 (restore-buffer-modified-p modflag)))
2168 ;;;###autoload
2169 (defun dired-hide-all (arg)
2170 "Hide all subdirectories, leaving only their header lines.
2171 If there is already something hidden, make everything visible again.
2172 Use \\[dired-hide-subdir] to (un)hide a particular subdirectory."
2173 (interactive "P")
2174 (dired-hide-check)
2175 (let ((modflag (buffer-modified-p))
2176 buffer-read-only)
2177 (if (save-excursion
2178 (goto-char (point-min))
2179 (search-forward "\r" nil t))
2180 ;; unhide - bombs on \r in filenames
2181 (subst-char-in-region (point-min) (point-max) ?\r ?\n)
2182 ;; hide
2183 (let ((pos (point-max)) ; pos of end of last directory
2184 (alist dired-subdir-alist))
2185 (while alist ; while there are dirs before pos
2186 (subst-char-in-region (dired-get-subdir-min (car alist)) ; pos of prev dir
2187 (save-excursion
2188 (goto-char pos) ; current dir
2189 ;; we're somewhere on current dir's line
2190 (forward-line -1)
2191 (point))
2192 ?\n ?\r)
2193 (setq pos (dired-get-subdir-min (car alist))) ; prev dir gets current dir
2194 (setq alist (cdr alist)))))
2195 (restore-buffer-modified-p modflag)))
2197 ;;;###end dired-ins.el
2200 ;; Functions for searching in tags style among marked files.
2202 ;;;###autoload
2203 (defun dired-do-search (regexp)
2204 "Search through all marked files for a match for REGEXP.
2205 Stops when a match is found.
2206 To continue searching for next match, use command \\[tags-loop-continue]."
2207 (interactive "sSearch marked files (regexp): ")
2208 (tags-search regexp '(dired-get-marked-files nil nil 'dired-nondirectory-p)))
2210 ;;;###autoload
2211 (defun dired-do-query-replace-regexp (from to &optional delimited)
2212 "Do `query-replace-regexp' of FROM with TO, on all marked files.
2213 Third arg DELIMITED (prefix arg) means replace only word-delimited matches.
2214 If you exit (\\[keyboard-quit], RET or q), you can resume the query replace
2215 with the command \\[tags-loop-continue]."
2216 (interactive
2217 (let ((common
2218 (query-replace-read-args
2219 "Query replace regexp in marked files" t t)))
2220 (list (nth 0 common) (nth 1 common) (nth 2 common))))
2221 (dolist (file (dired-get-marked-files nil nil 'dired-nondirectory-p))
2222 (let ((buffer (get-file-buffer file)))
2223 (if (and buffer (with-current-buffer buffer
2224 buffer-read-only))
2225 (error "File `%s' is visited read-only" file))))
2226 (tags-query-replace from to delimited
2227 '(dired-get-marked-files nil nil 'dired-nondirectory-p)))
2229 (defun dired-nondirectory-p (file)
2230 (not (file-directory-p file)))
2232 ;;;###autoload
2233 (defun dired-show-file-type (file &optional deref-symlinks)
2234 "Print the type of FILE, according to the `file' command.
2235 If FILE is a symbolic link and the optional argument DEREF-SYMLINKS is
2236 true then the type of the file linked to by FILE is printed instead."
2237 (interactive (list (dired-get-filename t) current-prefix-arg))
2238 (with-temp-buffer
2239 (if deref-symlinks
2240 (call-process "file" nil t t "-L" "--" file)
2241 (call-process "file" nil t t "--" file))
2242 (when (bolp)
2243 (backward-delete-char 1))
2244 (message "%s" (buffer-string))))
2246 (provide 'dired-aux)
2248 ;;; arch-tag: 4b508de9-a153-423d-8d3f-a1bbd86f4f60
2249 ;;; dired-aux.el ends here