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[emacs.git] / lisp / dired-aux.el
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1 ;;; dired-aux.el --- less commonly used parts of dired -*-byte-compile-dynamic: t;-*-
3 ;; Copyright (C) 1985, 1986, 1992, 1994, 1998, 2000, 2001, 2004
4 ;; 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., 59 Temple Place - Suite 330,
25 ;; Boston, MA 02111-1307, 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 ((default (if (mark t)
59 (save-excursion (goto-char (mark t))
60 (dired-get-filename t t)))))
61 (require 'diff)
62 (list (read-file-name (format "Diff %s with: %s"
63 (dired-get-filename t)
64 (if default
65 (concat "(default " default ") ")
66 ""))
67 (if default
68 (dired-current-directory)
69 (dired-dwim-target-directory))
70 default t)
71 (if current-prefix-arg
72 (read-string "Options for diff: "
73 (if (stringp diff-switches)
74 diff-switches
75 (mapconcat 'identity diff-switches " ")))))))
76 (diff file (dired-get-filename t) switches))
78 ;;;###autoload
79 (defun dired-backup-diff (&optional switches)
80 "Diff this file with its backup file or vice versa.
81 Uses the latest backup, if there are several numerical backups.
82 If this file is a backup, diff it with its original.
83 The backup file is the first file given to `diff'.
84 With prefix arg, prompt for argument SWITCHES which is options for `diff'."
85 (interactive
86 (if current-prefix-arg
87 (list (read-string "Options for diff: "
88 (if (stringp diff-switches)
89 diff-switches
90 (mapconcat 'identity diff-switches " "))))
91 nil))
92 (diff-backup (dired-get-filename) switches))
94 (defun dired-compare-directories (dir2 predicate)
95 "Mark files with different file attributes in two dired buffers.
96 Compare file attributes of files in the current directory
97 with file attributes in directory DIR2 using PREDICATE on pairs of files
98 with the same name. Mark files for which PREDICATE returns non-nil.
99 Mark files with different names if PREDICATE is nil (or interactively
100 when the user enters empty input at the predicate prompt).
102 PREDICATE is a Lisp expression that can refer to the following variables:
104 size1, size2 - file size in bytes
105 mtime1, mtime2 - last modification time in seconds, as a float
106 fa1, fa2 - list of file attributes
107 returned by function `file-attributes'
109 where 1 refers to attribute of file in the current dired buffer
110 and 2 to attribute of file in second dired buffer.
112 Examples of PREDICATE:
114 (> mtime1 mtime2) - mark newer files
115 (not (= size1 size2)) - mark files with different sizes
116 (not (string= (nth 8 fa1) (nth 8 fa2))) - mark files with different modes
117 (not (and (= (nth 2 fa1) (nth 2 fa2)) - mark files with different UID
118 (= (nth 3 fa1) (nth 3 fa2)))) and GID."
119 (interactive
120 (list (read-file-name (format "Compare %s with: "
121 (dired-current-directory))
122 (dired-dwim-target-directory))
123 (read-from-minibuffer "Mark if (lisp expr or RET): " nil nil t nil "nil")))
124 (let* ((dir1 (dired-current-directory))
125 (file-alist1 (dired-files-attributes dir1))
126 (file-alist2 (dired-files-attributes dir2))
127 (file-list1 (mapcar
128 'cadr
129 (dired-file-set-difference
130 file-alist1 file-alist2
131 predicate)))
132 (file-list2 (mapcar
133 'cadr
134 (dired-file-set-difference
135 file-alist2 file-alist1
136 predicate))))
137 (dired-fun-in-all-buffers
138 dir1 nil
139 (lambda ()
140 (dired-mark-if
141 (member (dired-get-filename nil t) file-list1) nil)))
142 (dired-fun-in-all-buffers
143 dir2 nil
144 (lambda ()
145 (dired-mark-if
146 (member (dired-get-filename nil t) file-list2) nil)))
147 (message "Marked in dir1: %s files, in dir2: %s files"
148 (length file-list1)
149 (length file-list2))))
151 (defun dired-file-set-difference (list1 list2 predicate)
152 "Combine LIST1 and LIST2 using a set-difference operation.
153 The result list contains all file items that appear in LIST1 but not LIST2.
154 This is a non-destructive function; it makes a copy of the data if necessary
155 to avoid corrupting the original LIST1 and LIST2.
156 PREDICATE (see `dired-compare-directories') is an additional match
157 condition. Two file items are considered to match if they are equal
158 *and* PREDICATE evaluates to t."
159 (if (or (null list1) (null list2))
160 list1
161 (let (res)
162 (dolist (file1 list1)
163 (unless (let ((list list2))
164 (while (and list
165 (not (let* ((file2 (car list))
166 (fa1 (car (cddr file1)))
167 (fa2 (car (cddr file2)))
168 (size1 (nth 7 fa1))
169 (size2 (nth 7 fa2))
170 (mtime1 (float-time (nth 5 fa1)))
171 (mtime2 (float-time (nth 5 fa2))))
172 (and
173 (equal (car file1) (car file2))
174 (not (eval predicate))))))
175 (setq list (cdr list)))
176 list)
177 (setq res (cons file1 res))))
178 (nreverse res))))
180 (defun dired-files-attributes (dir)
181 "Return a list of all file names and attributes from DIR.
182 List has a form of (file-name full-file-name (attribute-list))"
183 (mapcar
184 (lambda (file-name)
185 (let ((full-file-name (expand-file-name file-name dir)))
186 (list file-name
187 full-file-name
188 (file-attributes full-file-name))))
189 (directory-files dir)))
192 (defun dired-touch-initial (files)
193 "Create initial input value for `touch' command."
194 (let (initial)
195 (while files
196 (let ((current (nth 5 (file-attributes (car files)))))
197 (if (and initial (not (equal initial current)))
198 (setq initial (current-time) files nil)
199 (setq initial current))
200 (setq files (cdr files))))
201 (format-time-string "%Y%m%d%H%M.%S" initial)))
203 (defun dired-do-chxxx (attribute-name program op-symbol arg)
204 ;; Change file attributes (mode, group, owner, timestamp) of marked files and
205 ;; refresh their file lines.
206 ;; ATTRIBUTE-NAME is a string describing the attribute to the user.
207 ;; PROGRAM is the program used to change the attribute.
208 ;; OP-SYMBOL is the type of operation (for use in dired-mark-pop-up).
209 ;; ARG describes which files to use, as in dired-get-marked-files.
210 (let* ((files (dired-get-marked-files t arg))
211 (new-attribute
212 (dired-mark-read-string
213 (concat "Change " attribute-name " of %s to: ")
214 (if (eq op-symbol 'touch) (dired-touch-initial files))
215 op-symbol arg files))
216 (operation (concat program " " new-attribute))
217 failures)
218 (setq failures
219 (dired-bunch-files 10000
220 (function dired-check-process)
221 (append
222 (list operation program)
223 (if (eq op-symbol 'touch)
224 '("-t") nil)
225 (list new-attribute)
226 (if (string-match "gnu" system-configuration)
227 '("--") nil))
228 files))
229 (dired-do-redisplay arg);; moves point if ARG is an integer
230 (if failures
231 (dired-log-summary
232 (format "%s: error" operation)
233 nil))))
235 ;;;###autoload
236 (defun dired-do-chmod (&optional arg)
237 "Change the mode of the marked (or next ARG) files.
238 This calls chmod, thus symbolic modes like `g+w' are allowed."
239 (interactive "P")
240 (dired-do-chxxx "Mode" dired-chmod-program 'chmod arg))
242 ;;;###autoload
243 (defun dired-do-chgrp (&optional arg)
244 "Change the group of the marked (or next ARG) files."
245 (interactive "P")
246 (if (memq system-type '(ms-dos windows-nt))
247 (error "chgrp not supported on this system"))
248 (dired-do-chxxx "Group" "chgrp" 'chgrp arg))
250 ;;;###autoload
251 (defun dired-do-chown (&optional arg)
252 "Change the owner of the marked (or next ARG) files."
253 (interactive "P")
254 (if (memq system-type '(ms-dos windows-nt))
255 (error "chown not supported on this system"))
256 (dired-do-chxxx "Owner" dired-chown-program 'chown arg))
258 ;;;###autoload
259 (defun dired-do-touch (&optional arg)
260 "Change the timestamp of the marked (or next ARG) files.
261 This calls touch."
262 (interactive "P")
263 (dired-do-chxxx "Timestamp" dired-touch-program 'touch arg))
265 ;; Process all the files in FILES in batches of a convenient size,
266 ;; by means of (FUNCALL FUNCTION ARGS... SOME-FILES...).
267 ;; Batches are chosen to need less than MAX chars for the file names,
268 ;; allowing 3 extra characters of separator per file name.
269 (defun dired-bunch-files (max function args files)
270 (let (pending
271 past
272 (pending-length 0)
273 failures)
274 ;; Accumulate files as long as they fit in MAX chars,
275 ;; then process the ones accumulated so far.
276 (while files
277 (let* ((thisfile (car files))
278 (thislength (+ (length thisfile) 3))
279 (rest (cdr files)))
280 ;; If we have at least 1 pending file
281 ;; and this file won't fit in the length limit, process now.
282 (if (and pending (> (+ thislength pending-length) max))
283 (setq pending (nreverse pending)
284 ;; The elements of PENDING are now in forward order.
285 ;; Do the operation and record failures.
286 failures (nconc (apply function (append args pending))
287 failures)
288 ;; Transfer the elemens of PENDING onto PAST
289 ;; and clear it out. Now PAST contains the first N files
290 ;; specified (for some N), and FILES contains the rest.
291 past (nconc past pending)
292 pending nil
293 pending-length 0))
294 ;; Do (setq pending (cons thisfile pending))
295 ;; but reuse the cons that was in `files'.
296 (setcdr files pending)
297 (setq pending files)
298 (setq pending-length (+ thislength pending-length))
299 (setq files rest)))
300 (setq pending (nreverse pending))
301 (prog1
302 (nconc (apply function (append args pending))
303 failures)
304 ;; Now the original list FILES has been put back as it was.
305 (nconc past pending))))
307 ;;;###autoload
308 (defun dired-do-print (&optional arg)
309 "Print the marked (or next ARG) files.
310 Uses the shell command coming from variables `lpr-command' and
311 `lpr-switches' as default."
312 (interactive "P")
313 (let* ((file-list (dired-get-marked-files t arg))
314 (command (dired-mark-read-string
315 "Print %s with: "
316 (mapconcat 'identity
317 (cons lpr-command
318 (if (stringp lpr-switches)
319 (list lpr-switches)
320 lpr-switches))
321 " ")
322 'print arg file-list)))
323 (dired-run-shell-command (dired-shell-stuff-it command file-list nil))))
325 ;; Read arguments for a marked-files command that wants a string
326 ;; that is not a file name,
327 ;; perhaps popping up the list of marked files.
328 ;; ARG is the prefix arg and indicates whether the files came from
329 ;; marks (ARG=nil) or a repeat factor (integerp ARG).
330 ;; If the current file was used, the list has but one element and ARG
331 ;; does not matter. (It is non-nil, non-integer in that case, namely '(4)).
333 (defun dired-mark-read-string (prompt initial op-symbol arg files)
334 ;; PROMPT for a string, with INITIAL input.
335 ;; Other args are used to give user feedback and pop-up:
336 ;; OP-SYMBOL of command, prefix ARG, marked FILES.
337 (dired-mark-pop-up
338 nil op-symbol files
339 (function read-string)
340 (format prompt (dired-mark-prompt arg files)) initial))
342 ;;; Cleaning a directory: flagging some backups for deletion.
344 (defvar dired-file-version-alist)
346 ;;;###autoload
347 (defun dired-clean-directory (keep)
348 "Flag numerical backups for deletion.
349 Spares `dired-kept-versions' latest versions, and `kept-old-versions' oldest.
350 Positive prefix arg KEEP overrides `dired-kept-versions';
351 Negative prefix arg KEEP overrides `kept-old-versions' with KEEP made positive.
353 To clear the flags on these files, you can use \\[dired-flag-backup-files]
354 with a prefix argument."
355 (interactive "P")
356 (setq keep (if keep (prefix-numeric-value keep) dired-kept-versions))
357 (let ((early-retention (if (< keep 0) (- keep) kept-old-versions))
358 (late-retention (if (<= keep 0) dired-kept-versions keep))
359 (dired-file-version-alist ()))
360 (message "Cleaning numerical backups (keeping %d late, %d old)..."
361 late-retention early-retention)
362 ;; Look at each file.
363 ;; If the file has numeric backup versions,
364 ;; put on dired-file-version-alist an element of the form
365 ;; (FILENAME . VERSION-NUMBER-LIST)
366 (dired-map-dired-file-lines (function dired-collect-file-versions))
367 ;; Sort each VERSION-NUMBER-LIST,
368 ;; and remove the versions not to be deleted.
369 (let ((fval dired-file-version-alist))
370 (while fval
371 (let* ((sorted-v-list (cons 'q (sort (cdr (car fval)) '<)))
372 (v-count (length sorted-v-list)))
373 (if (> v-count (+ early-retention late-retention))
374 (rplacd (nthcdr early-retention sorted-v-list)
375 (nthcdr (- v-count late-retention)
376 sorted-v-list)))
377 (rplacd (car fval)
378 (cdr sorted-v-list)))
379 (setq fval (cdr fval))))
380 ;; Look at each file. If it is a numeric backup file,
381 ;; find it in a VERSION-NUMBER-LIST and maybe flag it for deletion.
382 (dired-map-dired-file-lines (function dired-trample-file-versions))
383 (message "Cleaning numerical backups...done")))
385 ;;; Subroutines of dired-clean-directory.
387 (defun dired-map-dired-file-lines (fun)
388 ;; Perform FUN with point at the end of each non-directory line.
389 ;; FUN takes one argument, the absolute filename.
390 (save-excursion
391 (let (file buffer-read-only)
392 (goto-char (point-min))
393 (while (not (eobp))
394 (save-excursion
395 (and (not (looking-at dired-re-dir))
396 (not (eolp))
397 (setq file (dired-get-filename nil t)) ; nil on non-file
398 (progn (end-of-line)
399 (funcall fun file))))
400 (forward-line 1)))))
402 (defun dired-collect-file-versions (fn)
403 (let ((fn (file-name-sans-versions fn)))
404 ;; Only do work if this file is not already in the alist.
405 (if (assoc fn dired-file-version-alist)
407 ;; If it looks like file FN has versions, return a list of the versions.
408 ;;That is a list of strings which are file names.
409 ;;The caller may want to flag some of these files for deletion.
410 (let* ((base-versions
411 (concat (file-name-nondirectory fn) ".~"))
412 (backup-extract-version-start (length base-versions))
413 (possibilities (file-name-all-completions
414 base-versions
415 (file-name-directory fn)))
416 (versions (mapcar 'backup-extract-version possibilities)))
417 (if versions
418 (setq dired-file-version-alist
419 (cons (cons fn versions)
420 dired-file-version-alist)))))))
422 (defun dired-trample-file-versions (fn)
423 (let* ((start-vn (string-match "\\.~[0-9]+~$" fn))
424 base-version-list)
425 (and start-vn
426 (setq base-version-list ; there was a base version to which
427 (assoc (substring fn 0 start-vn) ; this looks like a
428 dired-file-version-alist)) ; subversion
429 (not (memq (string-to-int (substring fn (+ 2 start-vn)))
430 base-version-list)) ; this one doesn't make the cut
431 (progn (beginning-of-line)
432 (delete-char 1)
433 (insert dired-del-marker)))))
435 ;;; Shell commands
437 (defun dired-read-shell-command (prompt arg files)
438 ;; "Read a dired shell command prompting with PROMPT (using read-string).
439 ;;ARG is the prefix arg and may be used to indicate in the prompt which
440 ;; files are affected.
441 ;;This is an extra function so that you can redefine it, e.g., to use gmhist."
442 (dired-mark-pop-up
443 nil 'shell files
444 (function read-string)
445 (format prompt (dired-mark-prompt arg files))
446 nil 'shell-command-history))
448 ;; The in-background argument is only needed in Emacs 18 where
449 ;; shell-command doesn't understand an appended ampersand `&'.
450 ;;;###autoload
451 (defun dired-do-shell-command (command &optional arg file-list)
452 "Run a shell command COMMAND on the marked files.
453 If no files are marked or a specific numeric prefix arg is given,
454 the next ARG files are used. Just \\[universal-argument] means the current file.
455 The prompt mentions the file(s) or the marker, as appropriate.
457 If there is a `*' in COMMAND, surrounded by whitespace, this runs
458 COMMAND just once with the entire file list substituted there.
460 If there is no `*', but there is a `?' in COMMAND, surrounded by
461 whitespace, this runs COMMAND on each file individually with the
462 file name substituted for `?'.
464 Otherwise, this runs COMMAND on each file individually with the
465 file name added at the end of COMMAND (separated by a space).
467 `*' and `?' when not surrounded by whitespace have no special
468 significance for `dired-do-shell-command', and are passed through
469 normally to the shell, but you must confirm first. To pass `*' by
470 itself to the shell as a wildcard, type `*\"\"'.
472 If COMMAND produces output, it goes to a separate buffer.
474 This feature does not try to redisplay Dired buffers afterward, as
475 there's no telling what files COMMAND may have changed.
476 Type \\[dired-do-redisplay] to redisplay the marked files.
478 When COMMAND runs, its working directory is the top-level directory of
479 the Dired buffer, so output files usually are created there instead of
480 in a subdir.
482 In a noninteractive call (from Lisp code), you must specify
483 the list of file names explicitly with the FILE-LIST argument."
484 ;;Functions dired-run-shell-command and dired-shell-stuff-it do the
485 ;;actual work and can be redefined for customization.
486 (interactive
487 (let ((files (dired-get-marked-files t current-prefix-arg)))
488 (list
489 ;; Want to give feedback whether this file or marked files are used:
490 (dired-read-shell-command (concat "! on "
491 "%s: ")
492 current-prefix-arg
493 files)
494 current-prefix-arg
495 files)))
496 (let* ((on-each (not (string-match dired-star-subst-regexp command)))
497 (subst (not (string-match dired-quark-subst-regexp command)))
498 (star (not (string-match "\\*" command)))
499 (qmark (not (string-match "\\?" command))))
500 ;; Get confirmation for wildcards that may have been meant
501 ;; to control substitution of a file name or the file name list.
502 (if (cond ((not (or on-each subst))
503 (error "You can not combine `*' and `?' substitution marks"))
504 ((and star (not on-each))
505 (y-or-n-p "Confirm--do you mean to use `*' as a wildcard? "))
506 ((and qmark (not subst))
507 (y-or-n-p "Confirm--do you mean to use `?' as a wildcard? "))
508 (t))
509 (if on-each
510 (dired-bunch-files
511 (- 10000 (length command))
512 (function (lambda (&rest files)
513 (dired-run-shell-command
514 (dired-shell-stuff-it command files t arg))))
516 file-list)
517 ;; execute the shell command
518 (dired-run-shell-command
519 (dired-shell-stuff-it command file-list nil arg))))))
521 ;; Might use {,} for bash or csh:
522 (defvar dired-mark-prefix ""
523 "Prepended to marked files in dired shell commands.")
524 (defvar dired-mark-postfix ""
525 "Appended to marked files in dired shell commands.")
526 (defvar dired-mark-separator " "
527 "Separates marked files in dired shell commands.")
529 (defun dired-shell-stuff-it (command file-list on-each &optional raw-arg)
530 ;; "Make up a shell command line from COMMAND and FILE-LIST.
531 ;; If ON-EACH is t, COMMAND should be applied to each file, else
532 ;; simply concat all files and apply COMMAND to this.
533 ;; FILE-LIST's elements will be quoted for the shell."
534 ;; Might be redefined for smarter things and could then use RAW-ARG
535 ;; (coming from interactive P and currently ignored) to decide what to do.
536 ;; Smart would be a way to access basename or extension of file names.
537 (let ((stuff-it
538 (if (or (string-match dired-star-subst-regexp command)
539 (string-match dired-quark-subst-regexp command))
540 (lambda (x)
541 (let ((retval command))
542 (while (string-match
543 "\\(^\\|[ \t]\\)\\([*?]\\)\\([ \t]\\|$\\)" retval)
544 (setq retval (replace-match x t t retval 2)))
545 retval))
546 (lambda (x) (concat command dired-mark-separator x)))))
547 (if on-each
548 (mapconcat stuff-it (mapcar 'shell-quote-argument file-list) ";")
549 (let ((files (mapconcat 'shell-quote-argument
550 file-list dired-mark-separator)))
551 (if (> (length file-list) 1)
552 (setq files (concat dired-mark-prefix files dired-mark-postfix)))
553 (funcall stuff-it files)))))
555 ;; This is an extra function so that it can be redefined by ange-ftp.
556 ;;;###autoload
557 (defun dired-run-shell-command (command)
558 (let ((handler
559 (find-file-name-handler (directory-file-name default-directory)
560 'shell-command)))
561 (if handler (apply handler 'shell-command (list command))
562 (shell-command command)))
563 ;; Return nil for sake of nconc in dired-bunch-files.
564 nil)
566 ;; In Emacs 19 this will return program's exit status.
567 ;; This is a separate function so that ange-ftp can redefine it.
568 (defun dired-call-process (program discard &rest arguments)
569 ; "Run PROGRAM with output to current buffer unless DISCARD is t.
570 ;Remaining arguments are strings passed as command arguments to PROGRAM."
571 ;; Look for a handler for default-directory in case it is a remote file name.
572 (let ((handler
573 (find-file-name-handler (directory-file-name default-directory)
574 'dired-call-process)))
575 (if handler (apply handler 'dired-call-process
576 program discard arguments)
577 (apply 'call-process program nil (not discard) nil arguments))))
579 (defun dired-check-process (msg program &rest arguments)
580 ; "Display MSG while running PROGRAM, and check for output.
581 ;Remaining arguments are strings passed as command arguments to PROGRAM.
582 ; On error, insert output
583 ; in a log buffer and return the offending ARGUMENTS or PROGRAM.
584 ; Caller can cons up a list of failed args.
585 ;Else returns nil for success."
586 (let (err-buffer err (dir default-directory))
587 (message "%s..." msg)
588 (save-excursion
589 ;; Get a clean buffer for error output:
590 (setq err-buffer (get-buffer-create " *dired-check-process output*"))
591 (set-buffer err-buffer)
592 (erase-buffer)
593 (setq default-directory dir ; caller's default-directory
594 err (not (eq 0
595 (apply (function dired-call-process) program nil arguments))))
596 (if err
597 (progn
598 (dired-log (concat program " " (prin1-to-string arguments) "\n"))
599 (dired-log err-buffer)
600 (or arguments program t))
601 (kill-buffer err-buffer)
602 (message "%s...done" msg)
603 nil))))
605 ;; Commands that delete or redisplay part of the dired buffer.
607 (defun dired-kill-line (&optional arg)
608 (interactive "P")
609 (setq arg (prefix-numeric-value arg))
610 (let (buffer-read-only file)
611 (while (/= 0 arg)
612 (setq file (dired-get-filename nil t))
613 (if (not file)
614 (error "Can only kill file lines")
615 (save-excursion (and file
616 (dired-goto-subdir file)
617 (dired-kill-subdir)))
618 (delete-region (progn (beginning-of-line) (point))
619 (progn (forward-line 1) (point)))
620 (if (> arg 0)
621 (setq arg (1- arg))
622 (setq arg (1+ arg))
623 (forward-line -1))))
624 (dired-move-to-filename)))
626 ;;;###autoload
627 (defun dired-do-kill-lines (&optional arg fmt)
628 "Kill all marked lines (not the files).
629 With a prefix argument, kill that many lines starting with the current line.
630 \(A negative argument kills backward.)
631 If you use this command with a prefix argument to kill the line
632 for a file that is a directory, which you have inserted in the
633 Dired buffer as a subdirectory, then it deletes that subdirectory
634 from the buffer as well.
635 To kill an entire subdirectory \(without killing its line in the
636 parent directory), go to its directory header line and use this
637 command with a prefix argument (the value does not matter)."
638 ;; Returns count of killed lines. FMT="" suppresses message.
639 (interactive "P")
640 (if arg
641 (if (dired-get-subdir)
642 (dired-kill-subdir)
643 (dired-kill-line arg))
644 (save-excursion
645 (goto-char (point-min))
646 (let (buffer-read-only
647 (count 0)
648 (regexp (dired-marker-regexp)))
649 (while (and (not (eobp))
650 (re-search-forward regexp nil t))
651 (setq count (1+ count))
652 (delete-region (progn (beginning-of-line) (point))
653 (progn (forward-line 1) (point))))
654 (or (equal "" fmt)
655 (message (or fmt "Killed %d line%s.") count (dired-plural-s count)))
656 count))))
658 ;;;###end dired-cmd.el
660 ;;; 30K
661 ;;;###begin dired-cp.el
663 (defun dired-compress ()
664 ;; Compress or uncompress the current file.
665 ;; Return nil for success, offending filename else.
666 (let* (buffer-read-only
667 (from-file (dired-get-filename))
668 (new-file (dired-compress-file from-file)))
669 (if new-file
670 (let ((start (point)))
671 ;; Remove any preexisting entry for the name NEW-FILE.
672 (condition-case nil
673 (dired-remove-entry new-file)
674 (error nil))
675 (goto-char start)
676 ;; Now replace the current line with an entry for NEW-FILE.
677 (dired-update-file-line new-file) nil)
678 (dired-log (concat "Failed to compress" from-file))
679 from-file)))
681 (defvar dired-compress-file-suffixes
682 '(("\\.gz\\'" "" "gunzip")
683 ("\\.tgz\\'" ".tar" "gunzip")
684 ("\\.Z\\'" "" "uncompress")
685 ;; For .z, try gunzip. It might be an old gzip file,
686 ;; or it might be from compact? pack? (which?) but gunzip handles both.
687 ("\\.z\\'" "" "gunzip")
688 ("\\.dz\\'" "" "dictunzip")
689 ("\\.tbz\\'" ".tar" "bunzip2")
690 ("\\.bz2\\'" "" "bunzip2")
691 ;; This item controls naming for compression.
692 ("\\.tar\\'" ".tgz" nil))
693 "Control changes in file name suffixes for compression and uncompression.
694 Each element specifies one transformation rule, and has the form:
695 (REGEXP NEW-SUFFIX PROGRAM)
696 The rule applies when the old file name matches REGEXP.
697 The new file name is computed by deleting the part that matches REGEXP
698 (as well as anything after that), then adding NEW-SUFFIX in its place.
699 If PROGRAM is non-nil, the rule is an uncompression rule,
700 and uncompression is done by running PROGRAM.
701 Otherwise, the rule is a compression rule, and compression is done with gzip.")
703 ;;;###autoload
704 (defun dired-compress-file (file)
705 ;; Compress or uncompress FILE.
706 ;; Return the name of the compressed or uncompressed file.
707 ;; Return nil if no change in files.
708 (let ((handler (find-file-name-handler file 'dired-compress-file))
709 suffix newname
710 (suffixes dired-compress-file-suffixes))
711 ;; See if any suffix rule matches this file name.
712 (while suffixes
713 (let (case-fold-search)
714 (if (string-match (car (car suffixes)) file)
715 (setq suffix (car suffixes) suffixes nil))
716 (setq suffixes (cdr suffixes))))
717 ;; If so, compute desired new name.
718 (if suffix
719 (setq newname (concat (substring file 0 (match-beginning 0))
720 (nth 1 suffix))))
721 (cond (handler
722 (funcall handler 'dired-compress-file file))
723 ((file-symlink-p file)
724 nil)
725 ((and suffix (nth 2 suffix))
726 ;; We found an uncompression rule.
727 (if (not (dired-check-process (concat "Uncompressing " file)
728 (nth 2 suffix) file))
729 newname))
731 ;;; We don't recognize the file as compressed, so compress it.
732 ;;; Try gzip; if we don't have that, use compress.
733 (condition-case nil
734 (if (not (dired-check-process (concat "Compressing " file)
735 "gzip" "-f" file))
736 (let ((out-name
737 (if (file-exists-p (concat file ".gz"))
738 (concat file ".gz")
739 (concat file ".z"))))
740 ;; Rename the compressed file to NEWNAME
741 ;; if it hasn't got that name already.
742 (if (and newname (not (equal newname out-name)))
743 (progn
744 (rename-file out-name newname t)
745 newname)
746 out-name)))
747 (file-error
748 (if (not (dired-check-process (concat "Compressing " file)
749 "compress" "-f" file))
750 ;; Don't use NEWNAME with `compress'.
751 (concat file ".Z"))))))))
753 (defun dired-mark-confirm (op-symbol arg)
754 ;; Request confirmation from the user that the operation described
755 ;; by OP-SYMBOL is to be performed on the marked files.
756 ;; Confirmation consists in a y-or-n question with a file list
757 ;; pop-up unless OP-SYMBOL is a member of `dired-no-confirm'.
758 ;; The files used are determined by ARG (as in dired-get-marked-files).
759 (or (eq dired-no-confirm t)
760 (memq op-symbol dired-no-confirm)
761 (let ((files (dired-get-marked-files t arg))
762 (string (if (eq op-symbol 'compress) "Compress or uncompress"
763 (capitalize (symbol-name op-symbol)))))
764 (dired-mark-pop-up nil op-symbol files (function y-or-n-p)
765 (concat string " "
766 (dired-mark-prompt arg files) "? ")))))
768 (defun dired-map-over-marks-check (fun arg op-symbol &optional show-progress)
769 ; "Map FUN over marked files (with second ARG like in dired-map-over-marks)
770 ; and display failures.
772 ; FUN takes zero args. It returns non-nil (the offending object, e.g.
773 ; the short form of the filename) for a failure and probably logs a
774 ; detailed error explanation using function `dired-log'.
776 ; OP-SYMBOL is a symbol describing the operation performed (e.g.
777 ; `compress'). It is used with `dired-mark-pop-up' to prompt the user
778 ; (e.g. with `Compress * [2 files]? ') and to display errors (e.g.
779 ; `Failed to compress 1 of 2 files - type W to see why ("foo")')
781 ; SHOW-PROGRESS if non-nil means redisplay dired after each file."
782 (if (dired-mark-confirm op-symbol arg)
783 (let* ((total-list;; all of FUN's return values
784 (dired-map-over-marks (funcall fun) arg show-progress))
785 (total (length total-list))
786 (failures (delq nil total-list))
787 (count (length failures))
788 (string (if (eq op-symbol 'compress) "Compress or uncompress"
789 (capitalize (symbol-name op-symbol)))))
790 (if (not failures)
791 (message "%s: %d file%s."
792 string total (dired-plural-s total))
793 ;; end this bunch of errors:
794 (dired-log-summary
795 (format "Failed to %s %d of %d file%s"
796 (downcase string) count total (dired-plural-s total))
797 failures)))))
799 (defvar dired-query-alist
800 '((?\y . y) (?\040 . y) ; `y' or SPC means accept once
801 (?n . n) (?\177 . n) ; `n' or DEL skips once
802 (?! . yes) ; `!' accepts rest
803 (?q . no) (?\e . no) ; `q' or ESC skips rest
804 ;; None of these keys quit - use C-g for that.
807 ;;;###autoload
808 (defun dired-query (qs-var qs-prompt &rest qs-args)
809 ;; Query user and return nil or t.
810 ;; Store answer in symbol VAR (which must initially be bound to nil).
811 ;; Format PROMPT with ARGS.
812 ;; Binding variable help-form will help the user who types the help key.
813 (let* ((char (symbol-value qs-var))
814 (action (cdr (assoc char dired-query-alist))))
815 (cond ((eq 'yes action)
816 t) ; accept, and don't ask again
817 ((eq 'no action)
818 nil) ; skip, and don't ask again
819 (t;; no lasting effects from last time we asked - ask now
820 (let ((qprompt (concat qs-prompt
821 (if help-form
822 (format " [Type yn!q or %s] "
823 (key-description
824 (char-to-string help-char)))
825 " [Type y, n, q or !] ")))
826 result elt)
827 ;; Actually it looks nicer without cursor-in-echo-area - you can
828 ;; look at the dired buffer instead of at the prompt to decide.
829 (apply 'message qprompt qs-args)
830 (setq char (set qs-var (read-char)))
831 (while (not (setq elt (assoc char dired-query-alist)))
832 (message "Invalid char - type %c for help." help-char)
833 (ding)
834 (sit-for 1)
835 (apply 'message qprompt qs-args)
836 (setq char (set qs-var (read-char))))
837 (memq (cdr elt) '(t y yes)))))))
839 ;;;###autoload
840 (defun dired-do-compress (&optional arg)
841 "Compress or uncompress marked (or next ARG) files."
842 (interactive "P")
843 (dired-map-over-marks-check (function dired-compress) arg 'compress t))
845 ;; Commands for Emacs Lisp files - load and byte compile
847 (defun dired-byte-compile ()
848 ;; Return nil for success, offending file name else.
849 (let* ((filename (dired-get-filename))
850 elc-file buffer-read-only failure)
851 (condition-case err
852 (save-excursion (byte-compile-file filename))
853 (error
854 (setq failure err)))
855 (setq elc-file (byte-compile-dest-file filename))
856 (or (file-exists-p elc-file)
857 (setq failure t))
858 (if failure
859 (progn
860 (dired-log "Byte compile error for %s:\n%s\n" filename failure)
861 (dired-make-relative filename))
862 (dired-remove-file elc-file)
863 (forward-line) ; insert .elc after its .el file
864 (dired-add-file elc-file)
865 nil)))
867 ;;;###autoload
868 (defun dired-do-byte-compile (&optional arg)
869 "Byte compile marked (or next ARG) Emacs Lisp files."
870 (interactive "P")
871 (dired-map-over-marks-check (function dired-byte-compile) arg 'byte-compile t))
873 (defun dired-load ()
874 ;; Return nil for success, offending file name else.
875 (let ((file (dired-get-filename)) failure)
876 (condition-case err
877 (load file nil nil t)
878 (error (setq failure err)))
879 (if (not failure)
881 (dired-log "Load error for %s:\n%s\n" file failure)
882 (dired-make-relative file))))
884 ;;;###autoload
885 (defun dired-do-load (&optional arg)
886 "Load the marked (or next ARG) Emacs Lisp files."
887 (interactive "P")
888 (dired-map-over-marks-check (function dired-load) arg 'load t))
890 ;;;###autoload
891 (defun dired-do-redisplay (&optional arg test-for-subdir)
892 "Redisplay all marked (or next ARG) files.
893 If on a subdir line, redisplay that subdirectory. In that case,
894 a prefix arg lets you edit the `ls' switches used for the new listing.
896 Dired remembers switches specified with a prefix arg, so that reverting
897 the buffer will not reset them. However, using `dired-undo' to re-insert
898 or delete subdirectories can bypass this machinery. Hence, you sometimes
899 may have to reset some subdirectory switches after a `dired-undo'.
900 You can reset all subdirectory switches to the default using
901 \\<dired-mode-map>\\[dired-reset-subdir-switches].
902 See Info node `(emacs-xtra)Subdir switches' for more details."
903 ;; Moves point if the next ARG files are redisplayed.
904 (interactive "P\np")
905 (if (and test-for-subdir (dired-get-subdir))
906 (let* ((dir (dired-get-subdir))
907 (switches (cdr (assoc-string dir dired-switches-alist))))
908 (dired-insert-subdir
910 (when arg
911 (read-string "Switches for listing: "
912 (or switches
913 dired-subdir-switches
914 dired-actual-switches)))))
915 (message "Redisplaying...")
916 ;; message much faster than making dired-map-over-marks show progress
917 (dired-uncache
918 (if (consp dired-directory) (car dired-directory) dired-directory))
919 (dired-map-over-marks (let ((fname (dired-get-filename)))
920 (message "Redisplaying... %s" fname)
921 (dired-update-file-line fname))
922 arg)
923 (dired-move-to-filename)
924 (message "Redisplaying...done")))
926 (defun dired-reset-subdir-switches ()
927 "Set `dired-switches-alist' to nil and revert dired buffer."
928 (interactive)
929 (setq dired-switches-alist nil)
930 (revert-buffer))
932 (defun dired-update-file-line (file)
933 ;; Delete the current line, and insert an entry for FILE.
934 ;; If FILE is nil, then just delete the current line.
935 ;; Keeps any marks that may be present in column one (doing this
936 ;; here is faster than with dired-add-entry's optional arg).
937 ;; Does not update other dired buffers. Use dired-relist-entry for that.
938 (beginning-of-line)
939 (let ((char (following-char)) (opoint (point))
940 (buffer-read-only))
941 (delete-region (point) (progn (forward-line 1) (point)))
942 (if file
943 (progn
944 (dired-add-entry file nil t)
945 ;; Replace space by old marker without moving point.
946 ;; Faster than goto+insdel inside a save-excursion?
947 (subst-char-in-region opoint (1+ opoint) ?\040 char))))
948 (dired-move-to-filename))
950 ;;;###autoload
951 (defun dired-add-file (filename &optional marker-char)
952 (dired-fun-in-all-buffers
953 (file-name-directory filename) (file-name-nondirectory filename)
954 (function dired-add-entry) filename marker-char))
956 (defun dired-add-entry (filename &optional marker-char relative)
957 ;; Add a new entry for FILENAME, optionally marking it
958 ;; with MARKER-CHAR (a character, else dired-marker-char is used).
959 ;; Note that this adds the entry `out of order' if files sorted by
960 ;; time, etc.
961 ;; At least this version inserts in the right subdirectory (if present).
962 ;; And it skips "." or ".." (see `dired-trivial-filenames').
963 ;; Hidden subdirs are exposed if a file is added there.
964 (setq filename (directory-file-name filename))
965 ;; Entry is always for files, even if they happen to also be directories
966 (let* ((opoint (point))
967 (cur-dir (dired-current-directory))
968 (orig-file-name filename)
969 (directory (if relative cur-dir (file-name-directory filename)))
970 reason)
971 (setq filename
972 (if relative
973 (file-relative-name filename directory)
974 (file-name-nondirectory filename))
975 reason
976 (catch 'not-found
977 (if (string= directory cur-dir)
978 (progn
979 (skip-chars-forward "^\r\n")
980 (if (eq (following-char) ?\r)
981 (dired-unhide-subdir))
982 ;; We are already where we should be, except when
983 ;; point is before the subdir line or its total line.
984 (let ((p (dired-after-subdir-garbage cur-dir)))
985 (if (< (point) p)
986 (goto-char p))))
987 ;; else try to find correct place to insert
988 (if (dired-goto-subdir directory)
989 (progn ;; unhide if necessary
990 (if (looking-at "\r") ;; point is at end of subdir line
991 (dired-unhide-subdir))
992 ;; found - skip subdir and `total' line
993 ;; and uninteresting files like . and ..
994 ;; This better not moves into the next subdir!
995 (dired-goto-next-nontrivial-file))
996 ;; not found
997 (throw 'not-found "Subdir not found")))
998 (let (buffer-read-only opoint)
999 (beginning-of-line)
1000 (setq opoint (point))
1001 ;; Don't expand `.'. Show just the file name within directory.
1002 (let ((default-directory directory))
1003 (dired-insert-directory directory
1004 (concat dired-actual-switches "d")
1005 (list filename)))
1006 (goto-char opoint)
1007 ;; Put in desired marker char.
1008 (when marker-char
1009 (let ((dired-marker-char
1010 (if (integerp marker-char) marker-char dired-marker-char)))
1011 (dired-mark nil)))
1012 ;; Compensate for a bug in ange-ftp.
1013 ;; It inserts the file's absolute name, rather than
1014 ;; the relative one. That may be hard to fix since it
1015 ;; is probably controlled by something in ftp.
1016 (goto-char opoint)
1017 (let ((inserted-name (dired-get-filename 'verbatim)))
1018 (if (file-name-directory inserted-name)
1019 (let (props)
1020 (end-of-line)
1021 (forward-char (- (length inserted-name)))
1022 (setq props (text-properties-at (point)))
1023 (delete-char (length inserted-name))
1024 (let ((pt (point)))
1025 (insert filename)
1026 (set-text-properties pt (point) props))
1027 (forward-char 1))
1028 (forward-line 1)))
1029 (forward-line -1)
1030 (if dired-after-readin-hook ;; the subdir-alist is not affected...
1031 (save-excursion ;; ...so we can run it right now:
1032 (save-restriction
1033 (beginning-of-line)
1034 (narrow-to-region (point) (save-excursion
1035 (forward-line 1) (point)))
1036 (run-hooks 'dired-after-readin-hook))))
1037 (dired-move-to-filename))
1038 ;; return nil if all went well
1039 nil))
1040 (if reason ; don't move away on failure
1041 (goto-char opoint))
1042 (not reason))) ; return t on success, nil else
1044 (defun dired-after-subdir-garbage (dir)
1045 ;; Return pos of first file line of DIR, skipping header and total
1046 ;; or wildcard lines.
1047 ;; Important: never moves into the next subdir.
1048 ;; DIR is assumed to be unhidden.
1049 ;; Will probably be redefined for VMS etc.
1050 (save-excursion
1051 (or (dired-goto-subdir dir) (error "This cannot happen"))
1052 (forward-line 1)
1053 (while (and (not (eolp)) ; don't cross subdir boundary
1054 (not (dired-move-to-filename)))
1055 (forward-line 1))
1056 (point)))
1058 ;;;###autoload
1059 (defun dired-remove-file (file)
1060 (dired-fun-in-all-buffers
1061 (file-name-directory file) (file-name-nondirectory file)
1062 (function dired-remove-entry) file))
1064 (defun dired-remove-entry (file)
1065 (save-excursion
1066 (and (dired-goto-file file)
1067 (let (buffer-read-only)
1068 (delete-region (progn (beginning-of-line) (point))
1069 (save-excursion (forward-line 1) (point)))))))
1071 ;;;###autoload
1072 (defun dired-relist-file (file)
1073 "Create or update the line for FILE in all Dired buffers it would belong in."
1074 (dired-fun-in-all-buffers (file-name-directory file)
1075 (file-name-nondirectory file)
1076 (function dired-relist-entry) file))
1078 (defun dired-relist-entry (file)
1079 ;; Relist the line for FILE, or just add it if it did not exist.
1080 ;; FILE must be an absolute file name.
1081 (let (buffer-read-only marker)
1082 ;; If cursor is already on FILE's line delete-region will cause
1083 ;; save-excursion to fail because of floating makers,
1084 ;; moving point to beginning of line. Sigh.
1085 (save-excursion
1086 (and (dired-goto-file file)
1087 (delete-region (progn (beginning-of-line)
1088 (setq marker (following-char))
1089 (point))
1090 (save-excursion (forward-line 1) (point))))
1091 (setq file (directory-file-name file))
1092 (dired-add-entry file (if (eq ?\040 marker) nil marker)))))
1094 ;;; Copy, move/rename, making hard and symbolic links
1096 (defcustom dired-recursive-copies nil
1097 "*Decide whether recursive copies are allowed.
1098 nil means no recursive copies.
1099 `always' means copy recursively without asking.
1100 `top' means ask for each directory at top level.
1101 Anything else means ask for each directory."
1102 :type '(choice :tag "Copy directories"
1103 (const :tag "No recursive copies" nil)
1104 (const :tag "Ask for each directory" t)
1105 (const :tag "Ask for each top directory only" top)
1106 (const :tag "Copy directories without asking" always))
1107 :group 'dired)
1109 (defcustom dired-backup-overwrite nil
1110 "*Non-nil if Dired should ask about making backups before overwriting files.
1111 Special value `always' suppresses confirmation."
1112 :type '(choice (const :tag "off" nil)
1113 (const :tag "suppress" always)
1114 (other :tag "ask" t))
1115 :group 'dired)
1117 (defvar dired-overwrite-confirmed)
1119 (defun dired-handle-overwrite (to)
1120 ;; Save old version of file TO that is to be overwritten.
1121 ;; `dired-overwrite-confirmed' and `overwrite-backup-query' are fluid vars
1122 ;; from dired-create-files.
1123 (let (backup)
1124 (if (and dired-backup-overwrite
1125 dired-overwrite-confirmed
1126 (setq backup (car (find-backup-file-name to)))
1127 (or (eq 'always dired-backup-overwrite)
1128 (dired-query 'overwrite-backup-query
1129 (format "Make backup for existing file `%s'? "
1130 to))))
1131 (progn
1132 (rename-file to backup 0) ; confirm overwrite of old backup
1133 (dired-relist-entry backup)))))
1135 ;;;###autoload
1136 (defun dired-copy-file (from to ok-flag)
1137 (dired-handle-overwrite to)
1138 (condition-case ()
1139 (dired-copy-file-recursive from to ok-flag dired-copy-preserve-time t
1140 dired-recursive-copies)
1141 (file-date-error (message "Can't set date")
1142 (sit-for 1))))
1144 (defun dired-copy-file-recursive (from to ok-flag &optional
1145 preserve-time top recursive)
1146 (if (and recursive
1147 (eq t (car (file-attributes from))) ; A directory, no symbolic link.
1148 (or (eq recursive 'always)
1149 (yes-or-no-p (format "Recursive copies of %s " from))))
1150 (let ((files (directory-files from nil dired-re-no-dot)))
1151 (if (eq recursive 'top) (setq recursive 'always)) ; Don't ask any more.
1152 (if (file-exists-p to)
1153 (or top (dired-handle-overwrite to))
1154 (make-directory to))
1155 (while files
1156 (dired-copy-file-recursive
1157 (expand-file-name (car files) from)
1158 (expand-file-name (car files) to)
1159 ok-flag preserve-time nil recursive)
1160 (setq files (cdr files))))
1161 (or top (dired-handle-overwrite to)) ; Just a file.
1162 (copy-file from to ok-flag dired-copy-preserve-time)))
1164 ;;;###autoload
1165 (defun dired-rename-file (file newname ok-if-already-exists)
1166 (dired-handle-overwrite newname)
1167 (rename-file file newname ok-if-already-exists) ; error is caught in -create-files
1168 ;; Silently rename the visited file of any buffer visiting this file.
1169 (and (get-file-buffer file)
1170 (with-current-buffer (get-file-buffer file)
1171 (set-visited-file-name newname nil t)))
1172 (dired-remove-file file)
1173 ;; See if it's an inserted subdir, and rename that, too.
1174 (dired-rename-subdir file newname))
1176 (defun dired-rename-subdir (from-dir to-dir)
1177 (setq from-dir (file-name-as-directory from-dir)
1178 to-dir (file-name-as-directory to-dir))
1179 (dired-fun-in-all-buffers from-dir nil
1180 (function dired-rename-subdir-1) from-dir to-dir)
1181 ;; Update visited file name of all affected buffers
1182 (let ((expanded-from-dir (expand-file-name from-dir))
1183 (blist (buffer-list)))
1184 (while blist
1185 (save-excursion
1186 (set-buffer (car blist))
1187 (if (and buffer-file-name
1188 (dired-in-this-tree buffer-file-name expanded-from-dir))
1189 (let ((modflag (buffer-modified-p))
1190 (to-file (dired-replace-in-string
1191 (concat "^" (regexp-quote from-dir))
1192 to-dir
1193 buffer-file-name)))
1194 (set-visited-file-name to-file)
1195 (set-buffer-modified-p modflag))))
1196 (setq blist (cdr blist)))))
1198 (defun dired-rename-subdir-1 (dir to)
1199 ;; Rename DIR to TO in headerlines and dired-subdir-alist, if DIR or
1200 ;; one of its subdirectories is expanded in this buffer.
1201 (let ((expanded-dir (expand-file-name dir))
1202 (alist dired-subdir-alist)
1203 (elt nil))
1204 (while alist
1205 (setq elt (car alist)
1206 alist (cdr alist))
1207 (if (dired-in-this-tree (car elt) expanded-dir)
1208 ;; ELT's subdir is affected by the rename
1209 (dired-rename-subdir-2 elt dir to)))
1210 (if (equal dir default-directory)
1211 ;; if top level directory was renamed, lots of things have to be
1212 ;; updated:
1213 (progn
1214 (dired-unadvertise dir) ; we no longer dired DIR...
1215 (setq default-directory to
1216 dired-directory (expand-file-name;; this is correct
1217 ;; with and without wildcards
1218 (file-name-nondirectory dired-directory)
1219 to))
1220 (let ((new-name (file-name-nondirectory
1221 (directory-file-name dired-directory))))
1222 ;; try to rename buffer, but just leave old name if new
1223 ;; name would already exist (don't try appending "<%d>")
1224 (or (get-buffer new-name)
1225 (rename-buffer new-name)))
1226 ;; ... we dired TO now:
1227 (dired-advertise)))))
1229 (defun dired-rename-subdir-2 (elt dir to)
1230 ;; Update the headerline and dired-subdir-alist element, as well as
1231 ;; dired-switches-alist element, of directory described by
1232 ;; alist-element ELT to reflect the moving of DIR to TO. Thus, ELT
1233 ;; describes either DIR itself or a subdir of DIR.
1234 (save-excursion
1235 (let ((regexp (regexp-quote (directory-file-name dir)))
1236 (newtext (directory-file-name to))
1237 buffer-read-only)
1238 (goto-char (dired-get-subdir-min elt))
1239 ;; Update subdir headerline in buffer
1240 (if (not (looking-at dired-subdir-regexp))
1241 (error "%s not found where expected - dired-subdir-alist broken?"
1242 dir)
1243 (goto-char (match-beginning 1))
1244 (if (re-search-forward regexp (match-end 1) t)
1245 (replace-match newtext t t)
1246 (error "Expected to find `%s' in headerline of %s" dir (car elt))))
1247 ;; Update buffer-local dired-subdir-alist and dired-switches-alist
1248 (let ((cons (assoc-string (car elt) dired-switches-alist))
1249 (cur-dir (dired-normalize-subdir
1250 (dired-replace-in-string regexp newtext (car elt)))))
1251 (setcar elt cur-dir)
1252 (when cons (setcar cons cur-dir))))))
1254 ;; The basic function for half a dozen variations on cp/mv/ln/ln -s.
1255 (defun dired-create-files (file-creator operation fn-list name-constructor
1256 &optional marker-char)
1258 ;; Create a new file for each from a list of existing files. The user
1259 ;; is queried, dired buffers are updated, and at the end a success or
1260 ;; failure message is displayed
1262 ;; FILE-CREATOR must accept three args: oldfile newfile ok-if-already-exists
1264 ;; It is called for each file and must create newfile, the entry of
1265 ;; which will be added. The user will be queried if the file already
1266 ;; exists. If oldfile is removed by FILE-CREATOR (i.e, it is a
1267 ;; rename), it is FILE-CREATOR's responsibility to update dired
1268 ;; buffers. FILE-CREATOR must abort by signaling a file-error if it
1269 ;; could not create newfile. The error is caught and logged.
1271 ;; OPERATION (a capitalized string, e.g. `Copy') describes the
1272 ;; operation performed. It is used for error logging.
1274 ;; FN-LIST is the list of files to copy (full absolute file names).
1276 ;; NAME-CONSTRUCTOR returns a newfile for every oldfile, or nil to
1277 ;; skip. If it skips files for other reasons than a direct user
1278 ;; query, it is supposed to tell why (using dired-log).
1280 ;; Optional MARKER-CHAR is a character with which to mark every
1281 ;; newfile's entry, or t to use the current marker character if the
1282 ;; oldfile was marked.
1284 (let (failures skipped (success-count 0) (total (length fn-list)))
1285 (let (to overwrite-query
1286 overwrite-backup-query) ; for dired-handle-overwrite
1287 (mapcar
1288 (function
1289 (lambda (from)
1290 (setq to (funcall name-constructor from))
1291 (if (equal to from)
1292 (progn
1293 (setq to nil)
1294 (dired-log "Cannot %s to same file: %s\n"
1295 (downcase operation) from)))
1296 (if (not to)
1297 (setq skipped (cons (dired-make-relative from) skipped))
1298 (let* ((overwrite (file-exists-p to))
1299 (dired-overwrite-confirmed ; for dired-handle-overwrite
1300 (and overwrite
1301 (let ((help-form '(format "\
1302 Type SPC or `y' to overwrite file `%s',
1303 DEL or `n' to skip to next,
1304 ESC or `q' to not overwrite any of the remaining files,
1305 `!' to overwrite all remaining files with no more questions." to)))
1306 (dired-query 'overwrite-query
1307 "Overwrite `%s'?" to))))
1308 ;; must determine if FROM is marked before file-creator
1309 ;; gets a chance to delete it (in case of a move).
1310 (actual-marker-char
1311 (cond ((integerp marker-char) marker-char)
1312 (marker-char (dired-file-marker from)) ; slow
1313 (t nil))))
1314 (condition-case err
1315 (progn
1316 (funcall file-creator from to dired-overwrite-confirmed)
1317 (if overwrite
1318 ;; If we get here, file-creator hasn't been aborted
1319 ;; and the old entry (if any) has to be deleted
1320 ;; before adding the new entry.
1321 (dired-remove-file to))
1322 (setq success-count (1+ success-count))
1323 (message "%s: %d of %d" operation success-count total)
1324 (dired-add-file to actual-marker-char))
1325 (file-error ; FILE-CREATOR aborted
1326 (progn
1327 (setq failures (cons (dired-make-relative from) failures))
1328 (dired-log "%s `%s' to `%s' failed:\n%s\n"
1329 operation from to err))))))))
1330 fn-list))
1331 (cond
1332 (failures
1333 (dired-log-summary
1334 (format "%s failed for %d of %d file%s"
1335 operation (length failures) total
1336 (dired-plural-s total))
1337 failures))
1338 (skipped
1339 (dired-log-summary
1340 (format "%s: %d of %d file%s skipped"
1341 operation (length skipped) total
1342 (dired-plural-s total))
1343 skipped))
1345 (message "%s: %s file%s"
1346 operation success-count (dired-plural-s success-count)))))
1347 (dired-move-to-filename))
1349 (defun dired-do-create-files (op-symbol file-creator operation arg
1350 &optional marker-char op1
1351 how-to)
1352 "Create a new file for each marked file.
1353 Prompts user for target, which is a directory in which to create
1354 the new files. Target may be a plain file if only one marked
1355 file exists. The way the default for the target directory is
1356 computed depends on the value of `dired-dwim-target-directory'.
1357 OP-SYMBOL is the symbol for the operation. Function `dired-mark-pop-up'
1358 will determine whether pop-ups are appropriate for this OP-SYMBOL.
1359 FILE-CREATOR and OPERATION as in `dired-create-files'.
1360 ARG as in `dired-get-marked-files'.
1361 Optional arg MARKER-CHAR as in `dired-create-files'.
1362 Optional arg OP1 is an alternate form for OPERATION if there is
1363 only one file.
1364 Optional arg HOW-TO is used to set the value of the into-dir variable
1365 which determines how to treat target.
1366 If into-dir is set to nil then target is not regarded as a directory,
1367 there must be exactly one marked file, else error.
1368 Else if into-dir is set to a list, then target is a generalized
1369 directory (e.g. some sort of archive). The first element of into-dir
1370 must be a function with at least four arguments:
1371 operation as OPERATION above.
1372 rfn-list a list of the relative names for the marked files.
1373 fn-list a list of the absolute names for the marked files.
1374 target.
1375 The rest of into-dir are optional arguments.
1376 Else into-dir is not a list. Target is a directory.
1377 The marked file(s) are created inside the target directory.
1379 If HOW-TO is not given (or nil), then into-dir is set to true if
1380 target is a directory and otherwise to nil.
1381 Else if HOW-TO is t, then into-dir is set to nil.
1382 Else HOW-TO is assumed to be a function of one argument, target,
1383 that looks at target and returns a value for the into-dir
1384 variable. The function `dired-into-dir-with-symlinks' is provided
1385 for the case (common when creating symlinks) that symbolic
1386 links to directories are not to be considered as directories
1387 (as `file-directory-p' would if HOW-TO had been nil)."
1388 (or op1 (setq op1 operation))
1389 (let* ((fn-list (dired-get-marked-files nil arg))
1390 (rfn-list (mapcar (function dired-make-relative) fn-list))
1391 (dired-one-file ; fluid variable inside dired-create-files
1392 (and (consp fn-list) (null (cdr fn-list)) (car fn-list)))
1393 (target-dir (dired-dwim-target-directory))
1394 (default (and dired-one-file
1395 (expand-file-name (file-name-nondirectory (car fn-list))
1396 target-dir)))
1397 (target (expand-file-name ; fluid variable inside dired-create-files
1398 (dired-mark-read-file-name
1399 (concat (if dired-one-file op1 operation) " %s to: ")
1400 target-dir op-symbol arg rfn-list default)))
1401 (into-dir (cond ((null how-to)
1402 ;; Allow DOS/Windows users to change the letter
1403 ;; case of a directory. If we don't test these
1404 ;; conditions up front, file-directory-p below
1405 ;; will return t because the filesystem is
1406 ;; case-insensitive, and Emacs will try to move
1407 ;; foo -> foo/foo, which fails.
1408 (if (and (memq system-type '(ms-dos windows-nt cygwin))
1409 (eq op-symbol 'move)
1410 dired-one-file
1411 (string= (downcase
1412 (expand-file-name (car fn-list)))
1413 (downcase
1414 (expand-file-name target)))
1415 (not (string=
1416 (file-name-nondirectory (car fn-list))
1417 (file-name-nondirectory target))))
1419 (file-directory-p target)))
1420 ((eq how-to t) nil)
1421 (t (funcall how-to target)))))
1422 (if (and (consp into-dir) (functionp (car into-dir)))
1423 (apply (car into-dir) operation rfn-list fn-list target (cdr into-dir))
1424 (if (not (or dired-one-file into-dir))
1425 (error "Marked %s: target must be a directory: %s" operation target))
1426 ;; rename-file bombs when moving directories unless we do this:
1427 (or into-dir (setq target (directory-file-name target)))
1428 (dired-create-files
1429 file-creator operation fn-list
1430 (if into-dir ; target is a directory
1431 ;; This function uses fluid variable target when called
1432 ;; inside dired-create-files:
1433 (function
1434 (lambda (from)
1435 (expand-file-name (file-name-nondirectory from) target)))
1436 (function (lambda (from) target)))
1437 marker-char))))
1439 ;; Read arguments for a marked-files command that wants a file name,
1440 ;; perhaps popping up the list of marked files.
1441 ;; ARG is the prefix arg and indicates whether the files came from
1442 ;; marks (ARG=nil) or a repeat factor (integerp ARG).
1443 ;; If the current file was used, the list has but one element and ARG
1444 ;; does not matter. (It is non-nil, non-integer in that case, namely '(4)).
1445 ;; DEFAULT is the default value to return if the user just hits RET;
1446 ;; if it is omitted or nil, then the name of the directory is used.
1448 (defun dired-mark-read-file-name (prompt dir op-symbol arg files
1449 &optional default)
1450 (dired-mark-pop-up
1451 nil op-symbol files
1452 (function read-file-name)
1453 (format prompt (dired-mark-prompt arg files)) dir default))
1455 (defun dired-dwim-target-directory ()
1456 ;; Try to guess which target directory the user may want.
1457 ;; If there is a dired buffer displayed in the next window, use
1458 ;; its current subdir, else use current subdir of this dired buffer.
1459 (let ((this-dir (and (eq major-mode 'dired-mode)
1460 (dired-current-directory))))
1461 ;; non-dired buffer may want to profit from this function, e.g. vm-uudecode
1462 (if dired-dwim-target
1463 (let* ((other-buf (window-buffer (next-window)))
1464 (other-dir (save-excursion
1465 (set-buffer other-buf)
1466 (and (eq major-mode 'dired-mode)
1467 (dired-current-directory)))))
1468 (or other-dir this-dir))
1469 this-dir)))
1471 ;;;###autoload
1472 (defun dired-create-directory (directory)
1473 "Create a directory called DIRECTORY."
1474 (interactive
1475 (list (read-file-name "Create directory: " (dired-current-directory))))
1476 (let ((expanded (directory-file-name (expand-file-name directory))))
1477 (make-directory expanded)
1478 (dired-add-file expanded)
1479 (dired-move-to-filename)))
1481 (defun dired-into-dir-with-symlinks (target)
1482 (and (file-directory-p target)
1483 (not (file-symlink-p target))))
1484 ;; This may not always be what you want, especially if target is your
1485 ;; home directory and it happens to be a symbolic link, as is often the
1486 ;; case with NFS and automounters. Or if you want to make symlinks
1487 ;; into directories that themselves are only symlinks, also quite
1488 ;; common.
1490 ;; So we don't use this function as value for HOW-TO in
1491 ;; dired-do-symlink, which has the minor disadvantage of
1492 ;; making links *into* a symlinked-dir, when you really wanted to
1493 ;; *overwrite* that symlink. In that (rare, I guess) case, you'll
1494 ;; just have to remove that symlink by hand before making your marked
1495 ;; symlinks.
1497 (defvar dired-copy-how-to-fn nil
1498 "nil or a function used by `dired-do-copy' to determine target.
1499 See HOW-TO argument for `dired-do-create-files'.")
1501 ;;;###autoload
1502 (defun dired-do-copy (&optional arg)
1503 "Copy all marked (or next ARG) files, or copy the current file.
1504 This normally preserves the last-modified date when copying.
1505 When operating on just the current file, you specify the new name.
1506 When operating on multiple or marked files, you specify a directory,
1507 and new copies of these files are made in that directory
1508 with the same names that the files currently have. The default
1509 suggested for the target directory depends on the value of
1510 `dired-dwim-target', which see."
1511 (interactive "P")
1512 (let ((dired-recursive-copies dired-recursive-copies))
1513 (dired-do-create-files 'copy (function dired-copy-file)
1514 (if dired-copy-preserve-time "Copy [-p]" "Copy")
1515 arg dired-keep-marker-copy
1516 nil dired-copy-how-to-fn)))
1518 ;;;###autoload
1519 (defun dired-do-symlink (&optional arg)
1520 "Make symbolic links to current file or all marked (or next ARG) files.
1521 When operating on just the current file, you specify the new name.
1522 When operating on multiple or marked files, you specify a directory
1523 and new symbolic links are made in that directory
1524 with the same names that the files currently have. The default
1525 suggested for the target directory depends on the value of
1526 `dired-dwim-target', which see."
1527 (interactive "P")
1528 (dired-do-create-files 'symlink (function make-symbolic-link)
1529 "Symlink" arg dired-keep-marker-symlink))
1531 ;;;###autoload
1532 (defun dired-do-hardlink (&optional arg)
1533 "Add names (hard links) current file or all marked (or next ARG) files.
1534 When operating on just the current file, you specify the new name.
1535 When operating on multiple or marked files, you specify a directory
1536 and new hard links are made in that directory
1537 with the same names that the files currently have. The default
1538 suggested for the target directory depends on the value of
1539 `dired-dwim-target', which see."
1540 (interactive "P")
1541 (dired-do-create-files 'hardlink (function dired-hardlink)
1542 "Hardlink" arg dired-keep-marker-hardlink))
1544 (defun dired-hardlink (file newname &optional ok-if-already-exists)
1545 (dired-handle-overwrite newname)
1546 ;; error is caught in -create-files
1547 (add-name-to-file file newname ok-if-already-exists)
1548 ;; Update the link count
1549 (dired-relist-file file))
1551 ;;;###autoload
1552 (defun dired-do-rename (&optional arg)
1553 "Rename current file or all marked (or next ARG) files.
1554 When renaming just the current file, you specify the new name.
1555 When renaming multiple or marked files, you specify a directory.
1556 This command also renames any buffers that are visiting the files.
1557 The default suggested for the target directory depends on the value
1558 of `dired-dwim-target', which see."
1559 (interactive "P")
1560 (dired-do-create-files 'move (function dired-rename-file)
1561 "Move" arg dired-keep-marker-rename "Rename"))
1562 ;;;###end dired-cp.el
1564 ;;; 5K
1565 ;;;###begin dired-re.el
1566 (defun dired-do-create-files-regexp
1567 (file-creator operation arg regexp newname &optional whole-name marker-char)
1568 ;; Create a new file for each marked file using regexps.
1569 ;; FILE-CREATOR and OPERATION as in dired-create-files.
1570 ;; ARG as in dired-get-marked-files.
1571 ;; Matches each marked file against REGEXP and constructs the new
1572 ;; filename from NEWNAME (like in function replace-match).
1573 ;; Optional arg WHOLE-NAME means match/replace the whole file name
1574 ;; instead of only the non-directory part of the file.
1575 ;; Optional arg MARKER-CHAR as in dired-create-files.
1576 (let* ((fn-list (dired-get-marked-files nil arg))
1577 (fn-count (length fn-list))
1578 (operation-prompt (concat operation " `%s' to `%s'?"))
1579 (rename-regexp-help-form (format "\
1580 Type SPC or `y' to %s one match, DEL or `n' to skip to next,
1581 `!' to %s all remaining matches with no more questions."
1582 (downcase operation)
1583 (downcase operation)))
1584 (regexp-name-constructor
1585 ;; Function to construct new filename using REGEXP and NEWNAME:
1586 (if whole-name ; easy (but rare) case
1587 (function
1588 (lambda (from)
1589 (let ((to (dired-string-replace-match regexp from newname))
1590 ;; must bind help-form directly around call to
1591 ;; dired-query
1592 (help-form rename-regexp-help-form))
1593 (if to
1594 (and (dired-query 'rename-regexp-query
1595 operation-prompt
1596 from
1599 (dired-log "%s: %s did not match regexp %s\n"
1600 operation from regexp)))))
1601 ;; not whole-name, replace non-directory part only
1602 (function
1603 (lambda (from)
1604 (let* ((new (dired-string-replace-match
1605 regexp (file-name-nondirectory from) newname))
1606 (to (and new ; nil means there was no match
1607 (expand-file-name new
1608 (file-name-directory from))))
1609 (help-form rename-regexp-help-form))
1610 (if to
1611 (and (dired-query 'rename-regexp-query
1612 operation-prompt
1613 (dired-make-relative from)
1614 (dired-make-relative to))
1616 (dired-log "%s: %s did not match regexp %s\n"
1617 operation (file-name-nondirectory from) regexp)))))))
1618 rename-regexp-query)
1619 (dired-create-files
1620 file-creator operation fn-list regexp-name-constructor marker-char)))
1622 (defun dired-mark-read-regexp (operation)
1623 ;; Prompt user about performing OPERATION.
1624 ;; Read and return list of: regexp newname arg whole-name.
1625 (let* ((whole-name
1626 (equal 0 (prefix-numeric-value current-prefix-arg)))
1627 (arg
1628 (if whole-name nil current-prefix-arg))
1629 (regexp
1630 (dired-read-regexp
1631 (concat (if whole-name "Abs. " "") operation " from (regexp): ")))
1632 (newname
1633 (read-string
1634 (concat (if whole-name "Abs. " "") operation " " regexp " to: "))))
1635 (list regexp newname arg whole-name)))
1637 ;;;###autoload
1638 (defun dired-do-rename-regexp (regexp newname &optional arg whole-name)
1639 "Rename selected files whose names match REGEXP to NEWNAME.
1641 With non-zero prefix argument ARG, the command operates on the next ARG
1642 files. Otherwise, it operates on all the marked files, or the current
1643 file if none are marked.
1645 As each match is found, the user must type a character saying
1646 what to do with it. For directions, type \\[help-command] at that time.
1647 NEWNAME may contain \\=\\<n> or \\& as in `query-replace-regexp'.
1648 REGEXP defaults to the last regexp used.
1650 With a zero prefix arg, renaming by regexp affects the absolute file name.
1651 Normally, only the non-directory part of the file name is used and changed."
1652 (interactive (dired-mark-read-regexp "Rename"))
1653 (dired-do-create-files-regexp
1654 (function dired-rename-file)
1655 "Rename" arg regexp newname whole-name dired-keep-marker-rename))
1657 ;;;###autoload
1658 (defun dired-do-copy-regexp (regexp newname &optional arg whole-name)
1659 "Copy selected files whose names match REGEXP to NEWNAME.
1660 See function `dired-do-rename-regexp' for more info."
1661 (interactive (dired-mark-read-regexp "Copy"))
1662 (let ((dired-recursive-copies nil)) ; No recursive copies.
1663 (dired-do-create-files-regexp
1664 (function dired-copy-file)
1665 (if dired-copy-preserve-time "Copy [-p]" "Copy")
1666 arg regexp newname whole-name dired-keep-marker-copy)))
1668 ;;;###autoload
1669 (defun dired-do-hardlink-regexp (regexp newname &optional arg whole-name)
1670 "Hardlink selected files whose names match REGEXP to NEWNAME.
1671 See function `dired-do-rename-regexp' for more info."
1672 (interactive (dired-mark-read-regexp "HardLink"))
1673 (dired-do-create-files-regexp
1674 (function add-name-to-file)
1675 "HardLink" arg regexp newname whole-name dired-keep-marker-hardlink))
1677 ;;;###autoload
1678 (defun dired-do-symlink-regexp (regexp newname &optional arg whole-name)
1679 "Symlink selected files whose names match REGEXP to NEWNAME.
1680 See function `dired-do-rename-regexp' for more info."
1681 (interactive (dired-mark-read-regexp "SymLink"))
1682 (dired-do-create-files-regexp
1683 (function make-symbolic-link)
1684 "SymLink" arg regexp newname whole-name dired-keep-marker-symlink))
1686 (defun dired-create-files-non-directory
1687 (file-creator basename-constructor operation arg)
1688 ;; Perform FILE-CREATOR on the non-directory part of marked files
1689 ;; using function BASENAME-CONSTRUCTOR, with query for each file.
1690 ;; OPERATION like in dired-create-files, ARG as in dired-get-marked-files.
1691 (let (rename-non-directory-query)
1692 (dired-create-files
1693 file-creator
1694 operation
1695 (dired-get-marked-files nil arg)
1696 (function
1697 (lambda (from)
1698 (let ((to (concat (file-name-directory from)
1699 (funcall basename-constructor
1700 (file-name-nondirectory from)))))
1701 (and (let ((help-form (format "\
1702 Type SPC or `y' to %s one file, DEL or `n' to skip to next,
1703 `!' to %s all remaining matches with no more questions."
1704 (downcase operation)
1705 (downcase operation))))
1706 (dired-query 'rename-non-directory-query
1707 (concat operation " `%s' to `%s'")
1708 (dired-make-relative from)
1709 (dired-make-relative to)))
1710 to))))
1711 dired-keep-marker-rename)))
1713 (defun dired-rename-non-directory (basename-constructor operation arg)
1714 (dired-create-files-non-directory
1715 (function dired-rename-file)
1716 basename-constructor operation arg))
1718 ;;;###autoload
1719 (defun dired-upcase (&optional arg)
1720 "Rename all marked (or next ARG) files to upper case."
1721 (interactive "P")
1722 (dired-rename-non-directory (function upcase) "Rename upcase" arg))
1724 ;;;###autoload
1725 (defun dired-downcase (&optional arg)
1726 "Rename all marked (or next ARG) files to lower case."
1727 (interactive "P")
1728 (dired-rename-non-directory (function downcase) "Rename downcase" arg))
1730 ;;;###end dired-re.el
1732 ;;; 13K
1733 ;;;###begin dired-ins.el
1735 ;;;###autoload
1736 (defun dired-maybe-insert-subdir (dirname &optional
1737 switches no-error-if-not-dir-p)
1738 "Insert this subdirectory into the same dired buffer.
1739 If it is already present, just move to it (type \\[dired-do-redisplay] to refresh),
1740 else inserts it at its natural place (as `ls -lR' would have done).
1741 With a prefix arg, you may edit the ls switches used for this listing.
1742 You can add `R' to the switches to expand the whole tree starting at
1743 this subdirectory.
1744 This function takes some pains to conform to `ls -lR' output.
1746 Dired remembers switches specified with a prefix arg, so that reverting
1747 the buffer will not reset them. However, using `dired-undo' to re-insert
1748 or delete subdirectories can bypass this machinery. Hence, you sometimes
1749 may have to reset some subdirectory switches after a `dired-undo'.
1750 You can reset all subdirectory switches to the default using
1751 \\<dired-mode-map>\\[dired-reset-subdir-switches].
1752 See Info node `(emacs-xtra)Subdir switches' for more details."
1753 (interactive
1754 (list (dired-get-filename)
1755 (if current-prefix-arg
1756 (read-string "Switches for listing: "
1757 (or dired-subdir-switches dired-actual-switches)))))
1758 (let ((opoint (point)))
1759 ;; We don't need a marker for opoint as the subdir is always
1760 ;; inserted *after* opoint.
1761 (setq dirname (file-name-as-directory dirname))
1762 (or (and (not switches)
1763 (dired-goto-subdir dirname))
1764 (dired-insert-subdir dirname switches no-error-if-not-dir-p))
1765 ;; Push mark so that it's easy to find back. Do this after the
1766 ;; insert message so that the user sees the `Mark set' message.
1767 (push-mark opoint)))
1769 ;;;###autoload
1770 (defun dired-insert-subdir (dirname &optional switches no-error-if-not-dir-p)
1771 "Insert this subdirectory into the same dired buffer.
1772 If it is already present, overwrites previous entry,
1773 else inserts it at its natural place (as `ls -lR' would have done).
1774 With a prefix arg, you may edit the `ls' switches used for this listing.
1775 You can add `R' to the switches to expand the whole tree starting at
1776 this subdirectory.
1777 This function takes some pains to conform to `ls -lR' output."
1778 ;; NO-ERROR-IF-NOT-DIR-P needed for special filesystems like
1779 ;; Prospero where dired-ls does the right thing, but
1780 ;; file-directory-p has not been redefined.
1781 (interactive
1782 (list (dired-get-filename)
1783 (if current-prefix-arg
1784 (read-string "Switches for listing: "
1785 (or dired-subdir-switches dired-actual-switches)))))
1786 (setq dirname (file-name-as-directory (expand-file-name dirname)))
1787 (or no-error-if-not-dir-p
1788 (file-directory-p dirname)
1789 (error "Attempt to insert a non-directory: %s" dirname))
1790 (let ((elt (assoc dirname dired-subdir-alist))
1791 (cons (assoc-string dirname dired-switches-alist))
1792 (modflag (buffer-modified-p))
1793 (old-switches switches)
1794 switches-have-R mark-alist case-fold-search buffer-read-only)
1795 (and (not switches) cons (setq switches (cdr cons)))
1796 (dired-insert-subdir-validate dirname switches)
1797 ;; case-fold-search is nil now, so we can test for capital `R':
1798 (if (setq switches-have-R (and switches (string-match "R" switches)))
1799 ;; avoid duplicated subdirs
1800 (setq mark-alist (dired-kill-tree dirname t)))
1801 (if elt
1802 ;; If subdir is already present, remove it and remember its marks
1803 (setq mark-alist (nconc (dired-insert-subdir-del elt) mark-alist))
1804 (dired-insert-subdir-newpos dirname)) ; else compute new position
1805 (dired-insert-subdir-doupdate
1806 dirname elt (dired-insert-subdir-doinsert dirname switches))
1807 (when old-switches
1808 (if cons
1809 (setcdr cons switches)
1810 (push (cons dirname switches) dired-switches-alist)))
1811 (when switches-have-R
1812 (dired-build-subdir-alist switches)
1813 (setq switches (dired-replace-in-string "R" "" switches))
1814 (dolist (cur-ass dired-subdir-alist)
1815 (let ((cur-dir (car cur-ass)))
1816 (and (dired-in-this-tree cur-dir dirname)
1817 (let ((cur-cons (assoc-string cur-dir dired-switches-alist)))
1818 (if cur-cons
1819 (setcdr cur-cons switches)
1820 (push (cons cur-dir switches) dired-switches-alist)))))))
1821 (dired-initial-position dirname)
1822 (save-excursion (dired-mark-remembered mark-alist))
1823 (restore-buffer-modified-p modflag)))
1825 ;; This is a separate function for dired-vms.
1826 (defun dired-insert-subdir-validate (dirname &optional switches)
1827 ;; Check that it is valid to insert DIRNAME with SWITCHES.
1828 ;; Signal an error if invalid (e.g. user typed `i' on `..').
1829 (or (dired-in-this-tree dirname (expand-file-name default-directory))
1830 (error "%s: not in this directory tree" dirname))
1831 (let ((real-switches (or switches dired-subdir-switches)))
1832 (when real-switches
1833 (let (case-fold-search)
1834 (mapcar
1835 (function
1836 (lambda (x)
1837 (or (eq (null (string-match x real-switches))
1838 (null (string-match x dired-actual-switches)))
1839 (error
1840 "Can't have dirs with and without -%s switches together" x))))
1841 ;; all switches that make a difference to dired-get-filename:
1842 '("F" "b"))))))
1844 (defun dired-alist-add (dir new-marker)
1845 ;; Add new DIR at NEW-MARKER. Sort alist.
1846 (dired-alist-add-1 dir new-marker)
1847 (dired-alist-sort))
1849 (defun dired-alist-sort ()
1850 ;; Keep the alist sorted on buffer position.
1851 (setq dired-subdir-alist
1852 (sort dired-subdir-alist
1853 (function (lambda (elt1 elt2)
1854 (> (dired-get-subdir-min elt1)
1855 (dired-get-subdir-min elt2)))))))
1857 (defun dired-kill-tree (dirname &optional remember-marks kill-root)
1858 "Kill all proper subdirs of DIRNAME, excluding DIRNAME itself.
1859 Interactively, you can kill DIRNAME as well by using a prefix argument.
1860 In interactive use, the command prompts for DIRNAME.
1862 When called from Lisp, if REMEMBER-MARKS is non-nil, return an alist
1863 of marked files. If KILL-ROOT is non-nil, kill DIRNAME as well."
1864 (interactive "DKill tree below directory: \ni\nP")
1865 (setq dirname (file-name-as-directory (expand-file-name dirname)))
1866 (let ((s-alist dired-subdir-alist) dir m-alist)
1867 (while s-alist
1868 (setq dir (car (car s-alist))
1869 s-alist (cdr s-alist))
1870 (and (or kill-root (not (string-equal dir dirname)))
1871 (dired-in-this-tree dir dirname)
1872 (dired-goto-subdir dir)
1873 (setq m-alist (nconc (dired-kill-subdir remember-marks) m-alist))))
1874 m-alist))
1876 (defun dired-insert-subdir-newpos (new-dir)
1877 ;; Find pos for new subdir, according to tree order.
1878 ;;(goto-char (point-max))
1879 (let ((alist dired-subdir-alist) elt dir pos new-pos)
1880 (while alist
1881 (setq elt (car alist)
1882 alist (cdr alist)
1883 dir (car elt)
1884 pos (dired-get-subdir-min elt))
1885 (if (dired-tree-lessp dir new-dir)
1886 ;; Insert NEW-DIR after DIR
1887 (setq new-pos (dired-get-subdir-max elt)
1888 alist nil)))
1889 (goto-char new-pos))
1890 ;; want a separating newline between subdirs
1891 (or (eobp)
1892 (forward-line -1))
1893 (insert "\n")
1894 (point))
1896 (defun dired-insert-subdir-del (element)
1897 ;; Erase an already present subdir (given by ELEMENT) from buffer.
1898 ;; Move to that buffer position. Return a mark-alist.
1899 (let ((begin-marker (dired-get-subdir-min element)))
1900 (goto-char begin-marker)
1901 ;; Are at beginning of subdir (and inside it!). Now determine its end:
1902 (goto-char (dired-subdir-max))
1903 (or (eobp);; want a separating newline _between_ subdirs:
1904 (forward-char -1))
1905 (prog1
1906 (dired-remember-marks begin-marker (point))
1907 (delete-region begin-marker (point)))))
1909 (defun dired-insert-subdir-doinsert (dirname switches)
1910 ;; Insert ls output after point.
1911 ;; Return the boundary of the inserted text (as list of BEG and END).
1912 (save-excursion
1913 (let ((begin (point)))
1914 (let ((dired-actual-switches
1915 (or switches
1916 dired-subdir-switches
1917 (dired-replace-in-string "R" "" dired-actual-switches))))
1918 (if (equal dirname (car (car (last dired-subdir-alist))))
1919 ;; If doing the top level directory of the buffer,
1920 ;; redo it as specified in dired-directory.
1921 (dired-readin-insert)
1922 (dired-insert-directory dirname dired-actual-switches nil nil t)))
1923 (list begin (point)))))
1925 (defun dired-insert-subdir-doupdate (dirname elt beg-end)
1926 ;; Point is at the correct subdir alist position for ELT,
1927 ;; BEG-END is the subdir-region (as list of begin and end).
1928 (if elt ; subdir was already present
1929 ;; update its position (should actually be unchanged)
1930 (set-marker (dired-get-subdir-min elt) (point-marker))
1931 (dired-alist-add dirname (point-marker)))
1932 ;; The hook may depend on the subdir-alist containing the just
1933 ;; inserted subdir, so run it after dired-alist-add:
1934 (if dired-after-readin-hook
1935 (save-excursion
1936 (let ((begin (nth 0 beg-end))
1937 (end (nth 1 beg-end)))
1938 (goto-char begin)
1939 (save-restriction
1940 (narrow-to-region begin end)
1941 ;; hook may add or delete lines, but the subdir boundary
1942 ;; marker floats
1943 (run-hooks 'dired-after-readin-hook))))))
1945 (defun dired-tree-lessp (dir1 dir2)
1946 ;; Lexicographic order on file name components, like `ls -lR':
1947 ;; DIR1 < DIR2 iff DIR1 comes *before* DIR2 in an `ls -lR' listing,
1948 ;; i.e., iff DIR1 is a (grand)parent dir of DIR2,
1949 ;; or DIR1 and DIR2 are in the same parentdir and their last
1950 ;; components are string-lessp.
1951 ;; Thus ("/usr/" "/usr/bin") and ("/usr/a/" "/usr/b/") are tree-lessp.
1952 ;; string-lessp could arguably be replaced by file-newer-than-file-p
1953 ;; if dired-actual-switches contained `t'.
1954 (setq dir1 (file-name-as-directory dir1)
1955 dir2 (file-name-as-directory dir2))
1956 (let ((components-1 (dired-split "/" dir1))
1957 (components-2 (dired-split "/" dir2)))
1958 (while (and components-1
1959 components-2
1960 (equal (car components-1) (car components-2)))
1961 (setq components-1 (cdr components-1)
1962 components-2 (cdr components-2)))
1963 (let ((c1 (car components-1))
1964 (c2 (car components-2)))
1966 (cond ((and c1 c2)
1967 (string-lessp c1 c2))
1968 ((and (null c1) (null c2))
1969 nil) ; they are equal, not lessp
1970 ((null c1) ; c2 is a subdir of c1: c1<c2
1972 ((null c2) ; c1 is a subdir of c2: c1>c2
1973 nil)
1974 (t (error "This can't happen"))))))
1976 ;; There should be a builtin split function - inverse to mapconcat.
1977 (defun dired-split (pat str &optional limit)
1978 "Splitting on regexp PAT, turn string STR into a list of substrings.
1979 Optional third arg LIMIT (>= 1) is a limit to the length of the
1980 resulting list.
1981 Thus, if SEP is a regexp that only matches itself,
1983 (mapconcat 'identity (dired-split SEP STRING) SEP)
1985 is always equal to STRING."
1986 (let* ((start (string-match pat str))
1987 (result (list (substring str 0 start)))
1988 (count 1)
1989 (end (if start (match-end 0))))
1990 (if end ; else nothing left
1991 (while (and (or (not (integerp limit))
1992 (< count limit))
1993 (string-match pat str end))
1994 (setq start (match-beginning 0)
1995 count (1+ count)
1996 result (cons (substring str end start) result)
1997 end (match-end 0)
1998 start end)
2000 (if (and (or (not (integerp limit))
2001 (< count limit))
2002 end) ; else nothing left
2003 (setq result
2004 (cons (substring str end) result)))
2005 (nreverse result)))
2007 ;;; moving by subdirectories
2009 ;;;###autoload
2010 (defun dired-prev-subdir (arg &optional no-error-if-not-found no-skip)
2011 "Go to previous subdirectory, regardless of level.
2012 When called interactively and not on a subdir line, go to this subdir's line."
2013 ;;(interactive "p")
2014 (interactive
2015 (list (if current-prefix-arg
2016 (prefix-numeric-value current-prefix-arg)
2017 ;; if on subdir start already, don't stay there!
2018 (if (dired-get-subdir) 1 0))))
2019 (dired-next-subdir (- arg) no-error-if-not-found no-skip))
2021 (defun dired-subdir-min ()
2022 (save-excursion
2023 (if (not (dired-prev-subdir 0 t t))
2024 (error "Not in a subdir!")
2025 (point))))
2027 ;;;###autoload
2028 (defun dired-goto-subdir (dir)
2029 "Go to end of header line of DIR in this dired buffer.
2030 Return value of point on success, otherwise return nil.
2031 The next char is either \\n, or \\r if DIR is hidden."
2032 (interactive
2033 (prog1 ; let push-mark display its message
2034 (list (expand-file-name
2035 (completing-read "Goto in situ directory: " ; prompt
2036 dired-subdir-alist ; table
2037 nil ; predicate
2038 t ; require-match
2039 (dired-current-directory))))
2040 (push-mark)))
2041 (setq dir (file-name-as-directory dir))
2042 (let ((elt (assoc dir dired-subdir-alist)))
2043 (and elt
2044 (goto-char (dired-get-subdir-min elt))
2045 ;; dired-subdir-hidden-p and dired-add-entry depend on point being
2046 ;; at either \r or \n after this function succeeds.
2047 (progn (skip-chars-forward "^\r\n")
2048 (point)))))
2050 ;;;###autoload
2051 (defun dired-mark-subdir-files ()
2052 "Mark all files except `.' and `..' in current subdirectory.
2053 If the Dired buffer shows multiple directories, this command
2054 marks the files listed in the subdirectory that point is in."
2055 (interactive)
2056 (let ((p-min (dired-subdir-min)))
2057 (dired-mark-files-in-region p-min (dired-subdir-max))))
2059 ;;;###autoload
2060 (defun dired-kill-subdir (&optional remember-marks)
2061 "Remove all lines of current subdirectory.
2062 Lower levels are unaffected."
2063 ;; With optional REMEMBER-MARKS, return a mark-alist.
2064 (interactive)
2065 (let* ((beg (dired-subdir-min))
2066 (end (dired-subdir-max))
2067 (modflag (buffer-modified-p))
2068 (cur-dir (dired-current-directory))
2069 (cons (assoc-string cur-dir dired-switches-alist))
2070 buffer-read-only)
2071 (if (equal cur-dir default-directory)
2072 (error "Attempt to kill top level directory"))
2073 (prog1
2074 (if remember-marks (dired-remember-marks beg end))
2075 (delete-region beg end)
2076 (if (eobp) ; don't leave final blank line
2077 (delete-char -1))
2078 (dired-unsubdir cur-dir)
2079 (when cons
2080 (setq dired-switches-alist (delete cons dired-switches-alist)))
2081 (restore-buffer-modified-p modflag))))
2083 (defun dired-unsubdir (dir)
2084 ;; Remove DIR from the alist
2085 (setq dired-subdir-alist
2086 (delq (assoc dir dired-subdir-alist) dired-subdir-alist)))
2088 ;;;###autoload
2089 (defun dired-tree-up (arg)
2090 "Go up ARG levels in the dired tree."
2091 (interactive "p")
2092 (let ((dir (dired-current-directory)))
2093 (while (>= arg 1)
2094 (setq arg (1- arg)
2095 dir (file-name-directory (directory-file-name dir))))
2096 ;;(setq dir (expand-file-name dir))
2097 (or (dired-goto-subdir dir)
2098 (error "Cannot go up to %s - not in this tree" dir))))
2100 ;;;###autoload
2101 (defun dired-tree-down ()
2102 "Go down in the dired tree."
2103 (interactive)
2104 (let ((dir (dired-current-directory)) ; has slash
2105 pos case-fold-search) ; filenames are case sensitive
2106 (let ((rest (reverse dired-subdir-alist)) elt)
2107 (while rest
2108 (setq elt (car rest)
2109 rest (cdr rest))
2110 (if (dired-in-this-tree (directory-file-name (car elt)) dir)
2111 (setq rest nil
2112 pos (dired-goto-subdir (car elt))))))
2113 (if pos
2114 (goto-char pos)
2115 (error "At the bottom"))))
2117 ;;; hiding
2119 (defun dired-unhide-subdir ()
2120 (let (buffer-read-only)
2121 (subst-char-in-region (dired-subdir-min) (dired-subdir-max) ?\r ?\n)))
2123 (defun dired-hide-check ()
2124 (or selective-display
2125 (error "selective-display must be t for subdir hiding to work!")))
2127 (defun dired-subdir-hidden-p (dir)
2128 (and selective-display
2129 (save-excursion
2130 (dired-goto-subdir dir)
2131 (looking-at "\r"))))
2133 ;;;###autoload
2134 (defun dired-hide-subdir (arg)
2135 "Hide or unhide the current subdirectory and move to next directory.
2136 Optional prefix arg is a repeat factor.
2137 Use \\[dired-hide-all] to (un)hide all directories."
2138 (interactive "p")
2139 (dired-hide-check)
2140 (let ((modflag (buffer-modified-p)))
2141 (while (>= (setq arg (1- arg)) 0)
2142 (let* ((cur-dir (dired-current-directory))
2143 (hidden-p (dired-subdir-hidden-p cur-dir))
2144 (elt (assoc cur-dir dired-subdir-alist))
2145 (end-pos (1- (dired-get-subdir-max elt)))
2146 buffer-read-only)
2147 ;; keep header line visible, hide rest
2148 (goto-char (dired-get-subdir-min elt))
2149 (skip-chars-forward "^\n\r")
2150 (if hidden-p
2151 (subst-char-in-region (point) end-pos ?\r ?\n)
2152 (subst-char-in-region (point) end-pos ?\n ?\r)))
2153 (dired-next-subdir 1 t))
2154 (restore-buffer-modified-p modflag)))
2156 ;;;###autoload
2157 (defun dired-hide-all (arg)
2158 "Hide all subdirectories, leaving only their header lines.
2159 If there is already something hidden, make everything visible again.
2160 Use \\[dired-hide-subdir] to (un)hide a particular subdirectory."
2161 (interactive "P")
2162 (dired-hide-check)
2163 (let ((modflag (buffer-modified-p))
2164 buffer-read-only)
2165 (if (save-excursion
2166 (goto-char (point-min))
2167 (search-forward "\r" nil t))
2168 ;; unhide - bombs on \r in filenames
2169 (subst-char-in-region (point-min) (point-max) ?\r ?\n)
2170 ;; hide
2171 (let ((pos (point-max)) ; pos of end of last directory
2172 (alist dired-subdir-alist))
2173 (while alist ; while there are dirs before pos
2174 (subst-char-in-region (dired-get-subdir-min (car alist)) ; pos of prev dir
2175 (save-excursion
2176 (goto-char pos) ; current dir
2177 ;; we're somewhere on current dir's line
2178 (forward-line -1)
2179 (point))
2180 ?\n ?\r)
2181 (setq pos (dired-get-subdir-min (car alist))) ; prev dir gets current dir
2182 (setq alist (cdr alist)))))
2183 (restore-buffer-modified-p modflag)))
2185 ;;;###end dired-ins.el
2188 ;; Functions for searching in tags style among marked files.
2190 ;;;###autoload
2191 (defun dired-do-search (regexp)
2192 "Search through all marked files for a match for REGEXP.
2193 Stops when a match is found.
2194 To continue searching for next match, use command \\[tags-loop-continue]."
2195 (interactive "sSearch marked files (regexp): ")
2196 (tags-search regexp '(dired-get-marked-files nil nil 'dired-nondirectory-p)))
2198 ;;;###autoload
2199 (defun dired-do-query-replace-regexp (from to &optional delimited)
2200 "Do `query-replace-regexp' of FROM with TO, on all marked files.
2201 Third arg DELIMITED (prefix arg) means replace only word-delimited matches.
2202 If you exit (\\[keyboard-quit], RET or q), you can resume the query replace
2203 with the command \\[tags-loop-continue]."
2204 (interactive
2205 "sQuery replace in marked files (regexp): \nsQuery replace %s by: \nP")
2206 (dolist (file (dired-get-marked-files nil nil 'dired-nondirectory-p))
2207 (let ((buffer (get-file-buffer file)))
2208 (if (and buffer (with-current-buffer buffer
2209 buffer-read-only))
2210 (error "File `%s' is visited read-only" file))))
2211 (tags-query-replace from to delimited
2212 '(dired-get-marked-files nil nil 'dired-nondirectory-p)))
2214 (defun dired-nondirectory-p (file)
2215 (not (file-directory-p file)))
2217 ;;;###autoload
2218 (defun dired-show-file-type (file &optional deref-symlinks)
2219 "Print the type of FILE, according to the `file' command.
2220 If FILE is a symbolic link and the optional argument DEREF-SYMLINKS is
2221 true then the type of the file linked to by FILE is printed instead."
2222 (interactive (list (dired-get-filename t) current-prefix-arg))
2223 (with-temp-buffer
2224 (if deref-symlinks
2225 (call-process "file" nil t t "-L" "--" file)
2226 (call-process "file" nil t t "--" file))
2227 (when (bolp)
2228 (backward-delete-char 1))
2229 (message "%s" (buffer-string))))
2231 (provide 'dired-aux)
2233 ;;; arch-tag: 4b508de9-a153-423d-8d3f-a1bbd86f4f60
2234 ;;; dired-aux.el ends here