(dired-do-query-replace-regexp, dired-do-search):
[emacs.git] / lisp / dired-aux.el
blob855deb2702cf5b1e46547b45f2efbf5dcde0a6cf
1 ;;; dired-aux.el --- less commonly used parts of dired -*-byte-compile-dynamic: t;-*-
3 ;; Copyright (C) 1985, 1986, 1992, 1994, 1998, 2000, 2001
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 ;;;###autoload
47 (defun dired-diff (file &optional switches)
48 "Compare file at point with file FILE using `diff'.
49 FILE defaults to the file at the mark. (That's the mark set by
50 \\[set-mark-command], not by Dired's \\[dired-mark] command.)
51 The prompted-for file is the first file given to `diff'.
52 With prefix arg, prompt for second argument SWITCHES,
53 which is options for `diff'."
54 (interactive
55 (let ((default (if (mark t)
56 (save-excursion (goto-char (mark t))
57 (dired-get-filename t t)))))
58 (require 'diff)
59 (list (read-file-name (format "Diff %s with: %s"
60 (dired-get-filename t)
61 (if default
62 (concat "(default " default ") ")
63 ""))
64 (dired-current-directory) default t)
65 (if current-prefix-arg
66 (read-string "Options for diff: "
67 (if (stringp diff-switches)
68 diff-switches
69 (mapconcat 'identity diff-switches " ")))))))
70 (diff file (dired-get-filename t) switches))
72 ;;;###autoload
73 (defun dired-backup-diff (&optional switches)
74 "Diff this file with its backup file or vice versa.
75 Uses the latest backup, if there are several numerical backups.
76 If this file is a backup, diff it with its original.
77 The backup file is the first file given to `diff'.
78 With prefix arg, prompt for argument SWITCHES which is options for `diff'."
79 (interactive
80 (if current-prefix-arg
81 (list (read-string "Options for diff: "
82 (if (stringp diff-switches)
83 diff-switches
84 (mapconcat 'identity diff-switches " "))))
85 nil))
86 (diff-backup (dired-get-filename) switches))
88 (defun dired-do-chxxx (attribute-name program op-symbol arg)
89 ;; Change file attributes (mode, group, owner) of marked files and
90 ;; refresh their file lines.
91 ;; ATTRIBUTE-NAME is a string describing the attribute to the user.
92 ;; PROGRAM is the program used to change the attribute.
93 ;; OP-SYMBOL is the type of operation (for use in dired-mark-pop-up).
94 ;; ARG describes which files to use, as in dired-get-marked-files.
95 (let* ((files (dired-get-marked-files t arg))
96 (new-attribute
97 (dired-mark-read-string
98 (concat "Change " attribute-name " of %s to: ")
99 nil op-symbol arg files))
100 (operation (concat program " " new-attribute))
101 failures)
102 (setq failures
103 (dired-bunch-files 10000
104 (function dired-check-process)
105 (append
106 (list operation program new-attribute)
107 (if (string-match "gnu" system-configuration)
108 '("--") nil))
109 files))
110 (dired-do-redisplay arg);; moves point if ARG is an integer
111 (if failures
112 (dired-log-summary
113 (format "%s: error" operation)
114 nil))))
116 ;;;###autoload
117 (defun dired-do-chmod (&optional arg)
118 "Change the mode of the marked (or next ARG) files.
119 This calls chmod, thus symbolic modes like `g+w' are allowed."
120 (interactive "P")
121 (dired-do-chxxx "Mode" dired-chmod-program 'chmod arg))
123 ;;;###autoload
124 (defun dired-do-chgrp (&optional arg)
125 "Change the group of the marked (or next ARG) files."
126 (interactive "P")
127 (if (memq system-type '(ms-dos windows-nt))
128 (error "chgrp not supported on this system"))
129 (dired-do-chxxx "Group" "chgrp" 'chgrp arg))
131 ;;;###autoload
132 (defun dired-do-chown (&optional arg)
133 "Change the owner of the marked (or next ARG) files."
134 (interactive "P")
135 (if (memq system-type '(ms-dos windows-nt))
136 (error "chown not supported on this system"))
137 (dired-do-chxxx "Owner" dired-chown-program 'chown arg))
139 ;; Process all the files in FILES in batches of a convenient size,
140 ;; by means of (FUNCALL FUNCTION ARGS... SOME-FILES...).
141 ;; Batches are chosen to need less than MAX chars for the file names,
142 ;; allowing 3 extra characters of separator per file name.
143 (defun dired-bunch-files (max function args files)
144 (let (pending
145 (pending-length 0)
146 failures)
147 ;; Accumulate files as long as they fit in MAX chars,
148 ;; then process the ones accumulated so far.
149 (while files
150 (let* ((thisfile (car files))
151 (thislength (+ (length thisfile) 3))
152 (rest (cdr files)))
153 ;; If we have at least 1 pending file
154 ;; and this file won't fit in the length limit, process now.
155 (if (and pending (> (+ thislength pending-length) max))
156 (setq failures
157 (nconc (apply function (append args (nreverse pending)))
158 failures)
159 pending nil
160 pending-length 0))
161 ;; Do (setq pending (cons thisfile pending))
162 ;; but reuse the cons that was in `files'.
163 (setcdr files pending)
164 (setq pending files)
165 (setq pending-length (+ thislength pending-length))
166 (setq files rest)))
167 (nconc (apply function (append args (nreverse pending)))
168 failures)))
170 ;;;###autoload
171 (defun dired-do-print (&optional arg)
172 "Print the marked (or next ARG) files.
173 Uses the shell command coming from variables `lpr-command' and
174 `lpr-switches' as default."
175 (interactive "P")
176 (let* ((file-list (dired-get-marked-files t arg))
177 (command (dired-mark-read-string
178 "Print %s with: "
179 (mapconcat 'identity
180 (cons lpr-command
181 (if (stringp lpr-switches)
182 (list lpr-switches)
183 lpr-switches))
184 " ")
185 'print arg file-list)))
186 (dired-run-shell-command (dired-shell-stuff-it command file-list nil))))
188 ;; Read arguments for a marked-files command that wants a string
189 ;; that is not a file name,
190 ;; perhaps popping up the list of marked files.
191 ;; ARG is the prefix arg and indicates whether the files came from
192 ;; marks (ARG=nil) or a repeat factor (integerp ARG).
193 ;; If the current file was used, the list has but one element and ARG
194 ;; does not matter. (It is non-nil, non-integer in that case, namely '(4)).
196 (defun dired-mark-read-string (prompt initial op-symbol arg files)
197 ;; PROMPT for a string, with INITIAL input.
198 ;; Other args are used to give user feedback and pop-up:
199 ;; OP-SYMBOL of command, prefix ARG, marked FILES.
200 (dired-mark-pop-up
201 nil op-symbol files
202 (function read-string)
203 (format prompt (dired-mark-prompt arg files)) initial))
205 ;;; Cleaning a directory: flagging some backups for deletion.
207 (defvar dired-file-version-alist)
209 (defun dired-clean-directory (keep)
210 "Flag numerical backups for deletion.
211 Spares `dired-kept-versions' latest versions, and `kept-old-versions' oldest.
212 Positive prefix arg KEEP overrides `dired-kept-versions';
213 Negative prefix arg KEEP overrides `kept-old-versions' with KEEP made positive.
215 To clear the flags on these files, you can use \\[dired-flag-backup-files]
216 with a prefix argument."
217 (interactive "P")
218 (setq keep (if keep (prefix-numeric-value keep) dired-kept-versions))
219 (let ((early-retention (if (< keep 0) (- keep) kept-old-versions))
220 (late-retention (if (<= keep 0) dired-kept-versions keep))
221 (dired-file-version-alist ()))
222 (message "Cleaning numerical backups (keeping %d late, %d old)..."
223 late-retention early-retention)
224 ;; Look at each file.
225 ;; If the file has numeric backup versions,
226 ;; put on dired-file-version-alist an element of the form
227 ;; (FILENAME . VERSION-NUMBER-LIST)
228 (dired-map-dired-file-lines (function dired-collect-file-versions))
229 ;; Sort each VERSION-NUMBER-LIST,
230 ;; and remove the versions not to be deleted.
231 (let ((fval dired-file-version-alist))
232 (while fval
233 (let* ((sorted-v-list (cons 'q (sort (cdr (car fval)) '<)))
234 (v-count (length sorted-v-list)))
235 (if (> v-count (+ early-retention late-retention))
236 (rplacd (nthcdr early-retention sorted-v-list)
237 (nthcdr (- v-count late-retention)
238 sorted-v-list)))
239 (rplacd (car fval)
240 (cdr sorted-v-list)))
241 (setq fval (cdr fval))))
242 ;; Look at each file. If it is a numeric backup file,
243 ;; find it in a VERSION-NUMBER-LIST and maybe flag it for deletion.
244 (dired-map-dired-file-lines (function dired-trample-file-versions))
245 (message "Cleaning numerical backups...done")))
247 ;;; Subroutines of dired-clean-directory.
249 (defun dired-map-dired-file-lines (fun)
250 ;; Perform FUN with point at the end of each non-directory line.
251 ;; FUN takes one argument, the absolute filename.
252 (save-excursion
253 (let (file buffer-read-only)
254 (goto-char (point-min))
255 (while (not (eobp))
256 (save-excursion
257 (and (not (looking-at dired-re-dir))
258 (not (eolp))
259 (setq file (dired-get-filename nil t)) ; nil on non-file
260 (progn (end-of-line)
261 (funcall fun file))))
262 (forward-line 1)))))
264 (defun dired-collect-file-versions (fn)
265 (let ((fn (file-name-sans-versions fn)))
266 ;; Only do work if this file is not already in the alist.
267 (if (assoc fn dired-file-version-alist)
269 ;; If it looks like file FN has versions, return a list of the versions.
270 ;;That is a list of strings which are file names.
271 ;;The caller may want to flag some of these files for deletion.
272 (let* ((base-versions
273 (concat (file-name-nondirectory fn) ".~"))
274 (backup-extract-version-start (length base-versions))
275 (possibilities (file-name-all-completions
276 base-versions
277 (file-name-directory fn)))
278 (versions (mapcar 'backup-extract-version possibilities)))
279 (if versions
280 (setq dired-file-version-alist
281 (cons (cons fn versions)
282 dired-file-version-alist)))))))
284 (defun dired-trample-file-versions (fn)
285 (let* ((start-vn (string-match "\\.~[0-9]+~$" fn))
286 base-version-list)
287 (and start-vn
288 (setq base-version-list ; there was a base version to which
289 (assoc (substring fn 0 start-vn) ; this looks like a
290 dired-file-version-alist)) ; subversion
291 (not (memq (string-to-int (substring fn (+ 2 start-vn)))
292 base-version-list)) ; this one doesn't make the cut
293 (progn (beginning-of-line)
294 (delete-char 1)
295 (insert dired-del-marker)))))
297 ;;; Shell commands
299 (defun dired-read-shell-command (prompt arg files)
300 ;; "Read a dired shell command prompting with PROMPT (using read-string).
301 ;;ARG is the prefix arg and may be used to indicate in the prompt which
302 ;; files are affected.
303 ;;This is an extra function so that you can redefine it, e.g., to use gmhist."
304 (dired-mark-pop-up
305 nil 'shell files
306 (function read-string)
307 (format prompt (dired-mark-prompt arg files))
308 nil 'shell-command-history))
310 ;; The in-background argument is only needed in Emacs 18 where
311 ;; shell-command doesn't understand an appended ampersand `&'.
312 ;;;###autoload
313 (defun dired-do-shell-command (command &optional arg file-list)
314 "Run a shell command COMMAND on the marked files.
315 If no files are marked or a specific numeric prefix arg is given,
316 the next ARG files are used. Just \\[universal-argument] means the current file.
317 The prompt mentions the file(s) or the marker, as appropriate.
319 If there is a `*' in COMMAND, surrounded by whitespace, this runs
320 COMMAND just once with the entire file list substituted there.
322 If there is no `*', but there is a `?' in COMMAND, surrounded by
323 whitespace, this runs COMMAND on each file individually with the
324 file name substituted for `?'.
326 Otherwise, this runs COMMAND on each file individually with the
327 file name added at the end of COMMAND (separated by a space).
329 `*' and `?' when not surrounded by whitespace have no special
330 significance for `dired-do-shell-command', and are passed through
331 normally to the shell, but you must confirm first. To pass `*' by
332 itself to the shell as a wildcard, type `*\"\"'.
334 If COMMAND produces output, it goes to a separate buffer.
336 This feature does not try to redisplay Dired buffers afterward, as
337 there's no telling what files COMMAND may have changed.
338 Type \\[dired-do-redisplay] to redisplay the marked files.
340 When COMMAND runs, its working directory is the top-level directory of
341 the Dired buffer, so output files usually are created there instead of
342 in a subdir.
344 In a noninteractive call (from Lisp code), you must specify
345 the list of file names explicitly with the FILE-LIST argument."
346 ;;Functions dired-run-shell-command and dired-shell-stuff-it do the
347 ;;actual work and can be redefined for customization.
348 (interactive
349 (let ((files (dired-get-marked-files t current-prefix-arg)))
350 (list
351 ;; Want to give feedback whether this file or marked files are used:
352 (dired-read-shell-command (concat "! on "
353 "%s: ")
354 current-prefix-arg
355 files)
356 current-prefix-arg
357 files)))
358 (let* ((on-each (not (string-match "\\(^\\|[ \t]\\)\\*\\([ \t]\\|$\\)" command)))
359 (subst (not (string-match "\\(^\\|[ \t]\\)\\?\\([ \t]\\|$\\)" command)))
360 (star (not (string-match "\\*" command)))
361 (qmark (not (string-match "\\?" command))))
362 ;; Get confirmation for wildcards that may have been meant
363 ;; to control substitution of a file name or the file name list.
364 (if (cond ((and star (not on-each))
365 (y-or-n-p "Confirm--do you mean to use `*' as a wildcard? "))
366 ((and qmark (not subst))
367 (y-or-n-p "Confirm--do you mean to use `?' as a wildcard? "))
368 (t))
369 (if on-each
370 (dired-bunch-files
371 (- 10000 (length command))
372 (function (lambda (&rest files)
373 (dired-run-shell-command
374 (dired-shell-stuff-it command files t arg))))
376 file-list)
377 ;; execute the shell command
378 (dired-run-shell-command
379 (dired-shell-stuff-it command file-list nil arg))))))
381 ;; Might use {,} for bash or csh:
382 (defvar dired-mark-prefix ""
383 "Prepended to marked files in dired shell commands.")
384 (defvar dired-mark-postfix ""
385 "Appended to marked files in dired shell commands.")
386 (defvar dired-mark-separator " "
387 "Separates marked files in dired shell commands.")
389 (defun dired-shell-stuff-it (command file-list on-each &optional raw-arg)
390 ;; "Make up a shell command line from COMMAND and FILE-LIST.
391 ;; If ON-EACH is t, COMMAND should be applied to each file, else
392 ;; simply concat all files and apply COMMAND to this.
393 ;; FILE-LIST's elements will be quoted for the shell."
394 ;; Might be redefined for smarter things and could then use RAW-ARG
395 ;; (coming from interactive P and currently ignored) to decide what to do.
396 ;; Smart would be a way to access basename or extension of file names.
397 (let ((stuff-it
398 (cond ((string-match "\\(^\\|[ \t]\\)\\*\\([ \t]\\|$\\)" command)
399 (lambda (x)
400 (string-match "\\(^\\|[ \t]\\)\\(\\*\\)\\([ \t]\\|$\\)" command)
401 (replace-match x t t command 2)))
402 ((string-match "\\(^\\|[ \t]\\)\\?\\([ \t]\\|$\\)" command)
403 (lambda (x)
404 (string-match "\\(^\\|[ \t]\\)\\(\\?\\)\\([ \t]\\|$\\)" command)
405 (replace-match x t t command 2)))
406 (t (lambda (x) (concat command dired-mark-separator x))))))
407 (if on-each
408 (mapconcat stuff-it (mapcar 'shell-quote-argument file-list) ";")
409 (let ((files (mapconcat 'shell-quote-argument
410 file-list dired-mark-separator)))
411 (if (> (length file-list) 1)
412 (setq files (concat dired-mark-prefix files dired-mark-postfix)))
413 (funcall stuff-it files)))))
415 ;; This is an extra function so that it can be redefined by ange-ftp.
416 (defun dired-run-shell-command (command)
417 (let ((handler
418 (find-file-name-handler (directory-file-name default-directory)
419 'shell-command)))
420 (if handler (apply handler 'shell-command (list command))
421 (shell-command command)))
422 ;; Return nil for sake of nconc in dired-bunch-files.
423 nil)
425 ;; In Emacs 19 this will return program's exit status.
426 ;; This is a separate function so that ange-ftp can redefine it.
427 (defun dired-call-process (program discard &rest arguments)
428 ; "Run PROGRAM with output to current buffer unless DISCARD is t.
429 ;Remaining arguments are strings passed as command arguments to PROGRAM."
430 ;; Look for a handler for default-directory in case it is a remote file name.
431 (let ((handler
432 (find-file-name-handler (directory-file-name default-directory)
433 'dired-call-process)))
434 (if handler (apply handler 'dired-call-process
435 program discard arguments)
436 (apply 'call-process program nil (not discard) nil arguments))))
438 (defun dired-check-process (msg program &rest arguments)
439 ; "Display MSG while running PROGRAM, and check for output.
440 ;Remaining arguments are strings passed as command arguments to PROGRAM.
441 ; On error, insert output
442 ; in a log buffer and return the offending ARGUMENTS or PROGRAM.
443 ; Caller can cons up a list of failed args.
444 ;Else returns nil for success."
445 (let (err-buffer err (dir default-directory))
446 (message "%s..." msg)
447 (save-excursion
448 ;; Get a clean buffer for error output:
449 (setq err-buffer (get-buffer-create " *dired-check-process output*"))
450 (set-buffer err-buffer)
451 (erase-buffer)
452 (setq default-directory dir ; caller's default-directory
453 err (/= 0
454 (apply (function dired-call-process) program nil arguments)))
455 (if err
456 (progn
457 (dired-log (concat program " " (prin1-to-string arguments) "\n"))
458 (dired-log err-buffer)
459 (or arguments program t))
460 (kill-buffer err-buffer)
461 (message "%s...done" msg)
462 nil))))
464 ;; Commands that delete or redisplay part of the dired buffer.
466 (defun dired-kill-line (&optional arg)
467 (interactive "P")
468 (setq arg (prefix-numeric-value arg))
469 (let (buffer-read-only file)
470 (while (/= 0 arg)
471 (setq file (dired-get-filename nil t))
472 (if (not file)
473 (error "Can only kill file lines")
474 (save-excursion (and file
475 (dired-goto-subdir file)
476 (dired-kill-subdir)))
477 (delete-region (progn (beginning-of-line) (point))
478 (progn (forward-line 1) (point)))
479 (if (> arg 0)
480 (setq arg (1- arg))
481 (setq arg (1+ arg))
482 (forward-line -1))))
483 (dired-move-to-filename)))
485 ;;;###autoload
486 (defun dired-do-kill-lines (&optional arg fmt)
487 "Kill all marked lines (not the files).
488 With a prefix argument, kill that many lines starting with the current line.
489 \(A negative argument kills lines before the current line.)
490 To kill an entire subdirectory, go to its directory header line
491 and use this command with a prefix argument (the value does not matter)."
492 ;; Returns count of killed lines. FMT="" suppresses message.
493 (interactive "P")
494 (if arg
495 (if (dired-get-subdir)
496 (dired-kill-subdir)
497 (dired-kill-line arg))
498 (save-excursion
499 (goto-char (point-min))
500 (let (buffer-read-only (count 0))
501 (if (not arg) ; kill marked lines
502 (let ((regexp (dired-marker-regexp)))
503 (while (and (not (eobp))
504 (re-search-forward regexp nil t))
505 (setq count (1+ count))
506 (delete-region (progn (beginning-of-line) (point))
507 (progn (forward-line 1) (point)))))
508 ;; else kill unmarked lines
509 (while (not (eobp))
510 (if (or (dired-between-files)
511 (not (looking-at "^ ")))
512 (forward-line 1)
513 (setq count (1+ count))
514 (delete-region (point) (save-excursion
515 (forward-line 1)
516 (point))))))
517 (or (equal "" fmt)
518 (message (or fmt "Killed %d line%s.") count (dired-plural-s count)))
519 count))))
521 ;;;###end dired-cmd.el
523 ;;; 30K
524 ;;;###begin dired-cp.el
526 (defun dired-compress ()
527 ;; Compress or uncompress the current file.
528 ;; Return nil for success, offending filename else.
529 (let* (buffer-read-only
530 (from-file (dired-get-filename))
531 (new-file (dired-compress-file from-file)))
532 (if new-file
533 (let ((start (point)))
534 ;; Remove any preexisting entry for the name NEW-FILE.
535 (condition-case nil
536 (dired-remove-entry new-file)
537 (error nil))
538 (goto-char start)
539 ;; Now replace the current line with an entry for NEW-FILE.
540 (dired-update-file-line new-file) nil)
541 (dired-log (concat "Failed to compress" from-file))
542 from-file)))
544 (defvar dired-compress-file-suffixes
545 '(("\\.gz\\'" "" "gunzip")
546 ("\\.tgz\\'" ".tar" "gunzip")
547 ("\\.Z\\'" "" "uncompress")
548 ;; For .z, try gunzip. It might be an old gzip file,
549 ;; or it might be from compact? pack? (which?) but gunzip handles both.
550 ("\\.z\\'" "" "gunzip")
551 ("\\.bz2\\'" "" "bunzip2")
552 ;; This item controls naming for compression.
553 ("\\.tar\\'" ".tgz" nil))
554 "Control changes in file name suffixes for compression and uncompression.
555 Each element specifies one transformation rule, and has the form:
556 (REGEXP NEW-SUFFIX PROGRAM)
557 The rule applies when the old file name matches REGEXP.
558 The new file name is computed by deleting the part that matches REGEXP
559 (as well as anything after that), then adding NEW-SUFFIX in its place.
560 If PROGRAM is non-nil, the rule is an uncompression rule,
561 and uncompression is done by running PROGRAM.
562 Otherwise, the rule is a compression rule, and compression is done with gzip.")
564 ;;;###autoload
565 (defun dired-compress-file (file)
566 ;; Compress or uncompress FILE.
567 ;; Return the name of the compressed or uncompressed file.
568 ;; Return nil if no change in files.
569 (let ((handler (find-file-name-handler file 'dired-compress-file))
570 suffix newname
571 (suffixes dired-compress-file-suffixes))
572 ;; See if any suffix rule matches this file name.
573 (while suffixes
574 (let (case-fold-search)
575 (if (string-match (car (car suffixes)) file)
576 (setq suffix (car suffixes) suffixes nil))
577 (setq suffixes (cdr suffixes))))
578 ;; If so, compute desired new name.
579 (if suffix
580 (setq newname (concat (substring file 0 (match-beginning 0))
581 (nth 1 suffix))))
582 (cond (handler
583 (funcall handler 'dired-compress-file file))
584 ((file-symlink-p file)
585 nil)
586 ((and suffix (nth 2 suffix))
587 ;; We found an uncompression rule.
588 (if (not (dired-check-process (concat "Uncompressing " file)
589 (nth 2 suffix) file))
590 newname))
592 ;;; We don't recognize the file as compressed, so compress it.
593 ;;; Try gzip; if we don't have that, use compress.
594 (condition-case nil
595 (if (not (dired-check-process (concat "Compressing " file)
596 "gzip" "-f" file))
597 (let ((out-name
598 (if (file-exists-p (concat file ".gz"))
599 (concat file ".gz")
600 (concat file ".z"))))
601 ;; Rename the compressed file to NEWNAME
602 ;; if it hasn't got that name already.
603 (if (and newname (not (equal newname out-name)))
604 (progn
605 (rename-file out-name newname t)
606 newname)
607 out-name)))
608 (file-error
609 (if (not (dired-check-process (concat "Compressing " file)
610 "compress" "-f" file))
611 ;; Don't use NEWNAME with `compress'.
612 (concat file ".Z"))))))))
614 (defun dired-mark-confirm (op-symbol arg)
615 ;; Request confirmation from the user that the operation described
616 ;; by OP-SYMBOL is to be performed on the marked files.
617 ;; Confirmation consists in a y-or-n question with a file list
618 ;; pop-up unless OP-SYMBOL is a member of `dired-no-confirm'.
619 ;; The files used are determined by ARG (as in dired-get-marked-files).
620 (or (eq dired-no-confirm t)
621 (memq op-symbol dired-no-confirm)
622 (let ((files (dired-get-marked-files t arg))
623 (string (if (eq op-symbol 'compress) "Compress or uncompress"
624 (capitalize (symbol-name op-symbol)))))
625 (dired-mark-pop-up nil op-symbol files (function y-or-n-p)
626 (concat string " "
627 (dired-mark-prompt arg files) "? ")))))
629 (defun dired-map-over-marks-check (fun arg op-symbol &optional show-progress)
630 ; "Map FUN over marked files (with second ARG like in dired-map-over-marks)
631 ; and display failures.
633 ; FUN takes zero args. It returns non-nil (the offending object, e.g.
634 ; the short form of the filename) for a failure and probably logs a
635 ; detailed error explanation using function `dired-log'.
637 ; OP-SYMBOL is a symbol describing the operation performed (e.g.
638 ; `compress'). It is used with `dired-mark-pop-up' to prompt the user
639 ; (e.g. with `Compress * [2 files]? ') and to display errors (e.g.
640 ; `Failed to compress 1 of 2 files - type W to see why ("foo")')
642 ; SHOW-PROGRESS if non-nil means redisplay dired after each file."
643 (if (dired-mark-confirm op-symbol arg)
644 (let* ((total-list;; all of FUN's return values
645 (dired-map-over-marks (funcall fun) arg show-progress))
646 (total (length total-list))
647 (failures (delq nil total-list))
648 (count (length failures))
649 (string (if (eq op-symbol 'compress) "Compress or uncompress"
650 (capitalize (symbol-name op-symbol)))))
651 (if (not failures)
652 (message "%s: %d file%s."
653 string total (dired-plural-s total))
654 ;; end this bunch of errors:
655 (dired-log-summary
656 (format "Failed to %s %d of %d file%s"
657 (downcase string) count total (dired-plural-s total))
658 failures)))))
660 (defvar dired-query-alist
661 '((?\y . y) (?\040 . y) ; `y' or SPC means accept once
662 (?n . n) (?\177 . n) ; `n' or DEL skips once
663 (?! . yes) ; `!' accepts rest
664 (?q. no) (?\e . no) ; `q' or ESC skips rest
665 ;; None of these keys quit - use C-g for that.
668 (defun dired-query (qs-var qs-prompt &rest qs-args)
669 ;; Query user and return nil or t.
670 ;; Store answer in symbol VAR (which must initially be bound to nil).
671 ;; Format PROMPT with ARGS.
672 ;; Binding variable help-form will help the user who types the help key.
673 (let* ((char (symbol-value qs-var))
674 (action (cdr (assoc char dired-query-alist))))
675 (cond ((eq 'yes action)
676 t) ; accept, and don't ask again
677 ((eq 'no action)
678 nil) ; skip, and don't ask again
679 (t;; no lasting effects from last time we asked - ask now
680 (let ((qprompt (concat qs-prompt
681 (if help-form
682 (format " [Type yn!q or %s] "
683 (key-description
684 (char-to-string help-char)))
685 " [Type y, n, q or !] ")))
686 result elt)
687 ;; Actually it looks nicer without cursor-in-echo-area - you can
688 ;; look at the dired buffer instead of at the prompt to decide.
689 (apply 'message qprompt qs-args)
690 (setq char (set qs-var (read-char)))
691 (while (not (setq elt (assoc char dired-query-alist)))
692 (message "Invalid char - type %c for help." help-char)
693 (ding)
694 (sit-for 1)
695 (apply 'message qprompt qs-args)
696 (setq char (set qs-var (read-char))))
697 (memq (cdr elt) '(t y yes)))))))
699 ;;;###autoload
700 (defun dired-do-compress (&optional arg)
701 "Compress or uncompress marked (or next ARG) files."
702 (interactive "P")
703 (dired-map-over-marks-check (function dired-compress) arg 'compress t))
705 ;; Commands for Emacs Lisp files - load and byte compile
707 (defun dired-byte-compile ()
708 ;; Return nil for success, offending file name else.
709 (let* ((filename (dired-get-filename))
710 elc-file buffer-read-only failure)
711 (condition-case err
712 (save-excursion (byte-compile-file filename))
713 (error
714 (setq failure err)))
715 (setq elc-file (byte-compile-dest-file filename))
716 (or (file-exists-p elc-file)
717 (setq failure t))
718 (if failure
719 (progn
720 (dired-log "Byte compile error for %s:\n%s\n" filename failure)
721 (dired-make-relative filename))
722 (dired-remove-file elc-file)
723 (forward-line) ; insert .elc after its .el file
724 (dired-add-file elc-file)
725 nil)))
727 ;;;###autoload
728 (defun dired-do-byte-compile (&optional arg)
729 "Byte compile marked (or next ARG) Emacs Lisp files."
730 (interactive "P")
731 (dired-map-over-marks-check (function dired-byte-compile) arg 'byte-compile t))
733 (defun dired-load ()
734 ;; Return nil for success, offending file name else.
735 (let ((file (dired-get-filename)) failure)
736 (condition-case err
737 (load file nil nil t)
738 (error (setq failure err)))
739 (if (not failure)
741 (dired-log "Load error for %s:\n%s\n" file failure)
742 (dired-make-relative file))))
744 ;;;###autoload
745 (defun dired-do-load (&optional arg)
746 "Load the marked (or next ARG) Emacs Lisp files."
747 (interactive "P")
748 (dired-map-over-marks-check (function dired-load) arg 'load t))
750 ;;;###autoload
751 (defun dired-do-redisplay (&optional arg test-for-subdir)
752 "Redisplay all marked (or next ARG) files.
753 If on a subdir line, redisplay that subdirectory. In that case,
754 a prefix arg lets you edit the `ls' switches used for the new listing."
755 ;; Moves point if the next ARG files are redisplayed.
756 (interactive "P\np")
757 (if (and test-for-subdir (dired-get-subdir))
758 (dired-insert-subdir
759 (dired-get-subdir)
760 (if arg (read-string "Switches for listing: " dired-actual-switches)))
761 (message "Redisplaying...")
762 ;; message much faster than making dired-map-over-marks show progress
763 (dired-uncache
764 (if (consp dired-directory) (car dired-directory) dired-directory))
765 (dired-map-over-marks (let ((fname (dired-get-filename)))
766 (message "Redisplaying... %s" fname)
767 (dired-update-file-line fname))
768 arg)
769 (dired-move-to-filename)
770 (message "Redisplaying...done")))
772 (defun dired-update-file-line (file)
773 ;; Delete the current line, and insert an entry for FILE.
774 ;; If FILE is nil, then just delete the current line.
775 ;; Keeps any marks that may be present in column one (doing this
776 ;; here is faster than with dired-add-entry's optional arg).
777 ;; Does not update other dired buffers. Use dired-relist-entry for that.
778 (beginning-of-line)
779 (let ((char (following-char)) (opoint (point))
780 (buffer-read-only))
781 (delete-region (point) (progn (forward-line 1) (point)))
782 (if file
783 (progn
784 (dired-add-entry file nil t)
785 ;; Replace space by old marker without moving point.
786 ;; Faster than goto+insdel inside a save-excursion?
787 (subst-char-in-region opoint (1+ opoint) ?\040 char))))
788 (dired-move-to-filename))
790 ;;;###autoload
791 (defun dired-add-file (filename &optional marker-char)
792 (dired-fun-in-all-buffers
793 (file-name-directory filename) (file-name-nondirectory filename)
794 (function dired-add-entry) filename marker-char))
796 (defun dired-add-entry (filename &optional marker-char relative)
797 ;; Add a new entry for FILENAME, optionally marking it
798 ;; with MARKER-CHAR (a character, else dired-marker-char is used).
799 ;; Note that this adds the entry `out of order' if files sorted by
800 ;; time, etc.
801 ;; At least this version inserts in the right subdirectory (if present).
802 ;; And it skips "." or ".." (see `dired-trivial-filenames').
803 ;; Hidden subdirs are exposed if a file is added there.
804 (setq filename (directory-file-name filename))
805 ;; Entry is always for files, even if they happen to also be directories
806 (let* ((opoint (point))
807 (cur-dir (dired-current-directory))
808 (orig-file-name filename)
809 (directory (if relative cur-dir (file-name-directory filename)))
810 reason)
811 (setq filename
812 (if relative
813 (file-relative-name filename directory)
814 (file-name-nondirectory filename))
815 reason
816 (catch 'not-found
817 (if (string= directory cur-dir)
818 (progn
819 (skip-chars-forward "^\r\n")
820 (if (eq (following-char) ?\r)
821 (dired-unhide-subdir))
822 ;; We are already where we should be, except when
823 ;; point is before the subdir line or its total line.
824 (let ((p (dired-after-subdir-garbage cur-dir)))
825 (if (< (point) p)
826 (goto-char p))))
827 ;; else try to find correct place to insert
828 (if (dired-goto-subdir directory)
829 (progn ;; unhide if necessary
830 (if (looking-at "\r") ;; point is at end of subdir line
831 (dired-unhide-subdir))
832 ;; found - skip subdir and `total' line
833 ;; and uninteresting files like . and ..
834 ;; This better not moves into the next subdir!
835 (dired-goto-next-nontrivial-file))
836 ;; not found
837 (throw 'not-found "Subdir not found")))
838 (let (buffer-read-only opoint)
839 (beginning-of-line)
840 (setq opoint (point))
841 (dired-add-entry-do-indentation marker-char)
842 ;; don't expand `.'. Show just the file name within directory.
843 (let ((default-directory directory))
844 (insert-directory filename
845 (concat dired-actual-switches "d")))
846 ;; Compensate for a bug in ange-ftp.
847 ;; It inserts the file's absolute name, rather than
848 ;; the relative one. That may be hard to fix since it
849 ;; is probably controlled by something in ftp.
850 (goto-char opoint)
851 (let ((inserted-name (dired-get-filename 'verbatim)))
852 (if (file-name-directory inserted-name)
853 (progn
854 (end-of-line)
855 (delete-char (- (length inserted-name)))
856 (insert filename)
857 (forward-char 1))
858 (forward-line 1)))
859 ;; Give each line a text property recording info about it.
860 (dired-insert-set-properties opoint (point))
861 (forward-line -1)
862 (if dired-after-readin-hook ;; the subdir-alist is not affected...
863 (save-excursion ;; ...so we can run it right now:
864 (save-restriction
865 (beginning-of-line)
866 (narrow-to-region (point) (save-excursion
867 (forward-line 1) (point)))
868 (run-hooks 'dired-after-readin-hook))))
869 (dired-move-to-filename))
870 ;; return nil if all went well
871 nil))
872 (if reason ; don't move away on failure
873 (goto-char opoint))
874 (not reason))) ; return t on success, nil else
876 ;; This is a separate function for the sake of nested dired format.
877 (defun dired-add-entry-do-indentation (marker-char)
878 ;; two spaces or a marker plus a space:
879 (insert (if marker-char
880 (if (integerp marker-char) marker-char dired-marker-char)
881 ?\040)
882 ?\040))
884 (defun dired-after-subdir-garbage (dir)
885 ;; Return pos of first file line of DIR, skipping header and total
886 ;; or wildcard lines.
887 ;; Important: never moves into the next subdir.
888 ;; DIR is assumed to be unhidden.
889 ;; Will probably be redefined for VMS etc.
890 (save-excursion
891 (or (dired-goto-subdir dir) (error "This cannot happen"))
892 (forward-line 1)
893 (while (and (not (eolp)) ; don't cross subdir boundary
894 (not (dired-move-to-filename)))
895 (forward-line 1))
896 (point)))
898 ;;;###autoload
899 (defun dired-remove-file (file)
900 (dired-fun-in-all-buffers
901 (file-name-directory file) (file-name-nondirectory file)
902 (function dired-remove-entry) file))
904 (defun dired-remove-entry (file)
905 (save-excursion
906 (and (dired-goto-file file)
907 (let (buffer-read-only)
908 (delete-region (progn (beginning-of-line) (point))
909 (save-excursion (forward-line 1) (point)))))))
911 ;;;###autoload
912 (defun dired-relist-file (file)
913 (dired-fun-in-all-buffers (file-name-directory file)
914 (file-name-nondirectory file)
915 (function dired-relist-entry) file))
917 (defun dired-relist-entry (file)
918 ;; Relist the line for FILE, or just add it if it did not exist.
919 ;; FILE must be an absolute file name.
920 (let (buffer-read-only marker)
921 ;; If cursor is already on FILE's line delete-region will cause
922 ;; save-excursion to fail because of floating makers,
923 ;; moving point to beginning of line. Sigh.
924 (save-excursion
925 (and (dired-goto-file file)
926 (delete-region (progn (beginning-of-line)
927 (setq marker (following-char))
928 (point))
929 (save-excursion (forward-line 1) (point))))
930 (setq file (directory-file-name file))
931 (dired-add-entry file (if (eq ?\040 marker) nil marker)))))
933 ;;; Copy, move/rename, making hard and symbolic links
935 (defcustom dired-recursive-copies nil
936 "*Decide whether recursive copies are allowed.
937 nil means no recursive copies.
938 `always' means copy recursively without asking.
939 `top' means ask for each directory at top level.
940 Anything else means ask for each directory."
941 :type '(choice :tag "Copy directories"
942 (const :tag "No recursive copies" nil)
943 (const :tag "Ask for each directory" t)
944 (const :tag "Ask for each top directory only" top)
945 (const :tag "Copy directories without asking" always))
946 :group 'dired)
948 (defcustom dired-backup-overwrite nil
949 "*Non-nil if Dired should ask about making backups before overwriting files.
950 Special value `always' suppresses confirmation."
951 :type '(choice (const :tag "off" nil)
952 (const :tag "suppress" always)
953 (other :tag "ask" t))
954 :group 'dired)
956 (defvar dired-overwrite-confirmed)
958 (defun dired-handle-overwrite (to)
959 ;; Save old version of a to be overwritten file TO.
960 ;; `dired-overwrite-confirmed' and `overwrite-backup-query' are fluid vars
961 ;; from dired-create-files.
962 (let (backup)
963 (if (and dired-backup-overwrite
964 dired-overwrite-confirmed
965 (setq backup (car (find-backup-file-name to)))
966 (or (eq 'always dired-backup-overwrite)
967 (dired-query 'overwrite-backup-query
968 (format "Make backup for existing file `%s'? "
969 to))))
970 (progn
971 (rename-file to backup 0) ; confirm overwrite of old backup
972 (dired-relist-entry backup)))))
974 ;;;###autoload
975 (defun dired-copy-file (from to ok-flag)
976 (dired-handle-overwrite to)
977 (condition-case ()
978 (dired-copy-file-recursive from to ok-flag dired-copy-preserve-time t
979 dired-recursive-copies)
980 (file-date-error (message "Can't set date")
981 (sit-for 1))))
983 (defun dired-copy-file-recursive (from to ok-flag &optional
984 preserve-time top recursive)
985 (if (and recursive
986 (eq t (car (file-attributes from))) ; A directory, no symbolic link.
987 (or (eq recursive 'always)
988 (yes-or-no-p (format "Recursive copies of %s " from))))
989 (let ((files (directory-files from nil dired-re-no-dot)))
990 (if (eq recursive 'top) (setq recursive 'always)) ; Don't ask any more.
991 (if (file-exists-p to)
992 (or top (dired-handle-overwrite to))
993 (make-directory to))
994 (while files
995 (dired-copy-file-recursive
996 (expand-file-name (car files) from)
997 (expand-file-name (car files) to)
998 ok-flag preserve-time nil recursive)
999 (setq files (cdr files))))
1000 (or top (dired-handle-overwrite to)) ; Just a file.
1001 (copy-file from to ok-flag dired-copy-preserve-time)))
1003 ;;;###autoload
1004 (defun dired-rename-file (from to ok-flag)
1005 (dired-handle-overwrite to)
1006 (rename-file from to ok-flag) ; error is caught in -create-files
1007 ;; Silently rename the visited file of any buffer visiting this file.
1008 (and (get-file-buffer from)
1009 (with-current-buffer (get-file-buffer from)
1010 (set-visited-file-name to nil t)))
1011 (dired-remove-file from)
1012 ;; See if it's an inserted subdir, and rename that, too.
1013 (dired-rename-subdir from to))
1015 (defun dired-rename-subdir (from-dir to-dir)
1016 (setq from-dir (file-name-as-directory from-dir)
1017 to-dir (file-name-as-directory to-dir))
1018 (dired-fun-in-all-buffers from-dir nil
1019 (function dired-rename-subdir-1) from-dir to-dir)
1020 ;; Update visited file name of all affected buffers
1021 (let ((expanded-from-dir (expand-file-name from-dir))
1022 (blist (buffer-list)))
1023 (while blist
1024 (save-excursion
1025 (set-buffer (car blist))
1026 (if (and buffer-file-name
1027 (dired-in-this-tree buffer-file-name expanded-from-dir))
1028 (let ((modflag (buffer-modified-p))
1029 (to-file (dired-replace-in-string
1030 (concat "^" (regexp-quote from-dir))
1031 to-dir
1032 buffer-file-name)))
1033 (set-visited-file-name to-file)
1034 (set-buffer-modified-p modflag))))
1035 (setq blist (cdr blist)))))
1037 (defun dired-rename-subdir-1 (dir to)
1038 ;; Rename DIR to TO in headerlines and dired-subdir-alist, if DIR or
1039 ;; one of its subdirectories is expanded in this buffer.
1040 (let ((expanded-dir (expand-file-name dir))
1041 (alist dired-subdir-alist)
1042 (elt nil))
1043 (while alist
1044 (setq elt (car alist)
1045 alist (cdr alist))
1046 (if (dired-in-this-tree (car elt) expanded-dir)
1047 ;; ELT's subdir is affected by the rename
1048 (dired-rename-subdir-2 elt dir to)))
1049 (if (equal dir default-directory)
1050 ;; if top level directory was renamed, lots of things have to be
1051 ;; updated:
1052 (progn
1053 (dired-unadvertise dir) ; we no longer dired DIR...
1054 (setq default-directory to
1055 dired-directory (expand-file-name;; this is correct
1056 ;; with and without wildcards
1057 (file-name-nondirectory dired-directory)
1058 to))
1059 (let ((new-name (file-name-nondirectory
1060 (directory-file-name dired-directory))))
1061 ;; try to rename buffer, but just leave old name if new
1062 ;; name would already exist (don't try appending "<%d>")
1063 (or (get-buffer new-name)
1064 (rename-buffer new-name)))
1065 ;; ... we dired TO now:
1066 (dired-advertise)))))
1068 (defun dired-rename-subdir-2 (elt dir to)
1069 ;; Update the headerline and dired-subdir-alist element of directory
1070 ;; described by alist-element ELT to reflect the moving of DIR to TO.
1071 ;; Thus, ELT describes either DIR itself or a subdir of DIR.
1072 (save-excursion
1073 (let ((regexp (regexp-quote (directory-file-name dir)))
1074 (newtext (directory-file-name to))
1075 buffer-read-only)
1076 (goto-char (dired-get-subdir-min elt))
1077 ;; Update subdir headerline in buffer
1078 (if (not (looking-at dired-subdir-regexp))
1079 (error "%s not found where expected - dired-subdir-alist broken?"
1080 dir)
1081 (goto-char (match-beginning 1))
1082 (if (re-search-forward regexp (match-end 1) t)
1083 (replace-match newtext t t)
1084 (error "Expected to find `%s' in headerline of %s" dir (car elt))))
1085 ;; Update buffer-local dired-subdir-alist
1086 (setcar elt
1087 (dired-normalize-subdir
1088 (dired-replace-in-string regexp newtext (car elt)))))))
1090 ;; The basic function for half a dozen variations on cp/mv/ln/ln -s.
1091 (defun dired-create-files (file-creator operation fn-list name-constructor
1092 &optional marker-char)
1094 ;; Create a new file for each from a list of existing files. The user
1095 ;; is queried, dired buffers are updated, and at the end a success or
1096 ;; failure message is displayed
1098 ;; FILE-CREATOR must accept three args: oldfile newfile ok-if-already-exists
1100 ;; It is called for each file and must create newfile, the entry of
1101 ;; which will be added. The user will be queried if the file already
1102 ;; exists. If oldfile is removed by FILE-CREATOR (i.e, it is a
1103 ;; rename), it is FILE-CREATOR's responsibility to update dired
1104 ;; buffers. FILE-CREATOR must abort by signaling a file-error if it
1105 ;; could not create newfile. The error is caught and logged.
1107 ;; OPERATION (a capitalized string, e.g. `Copy') describes the
1108 ;; operation performed. It is used for error logging.
1110 ;; FN-LIST is the list of files to copy (full absolute file names).
1112 ;; NAME-CONSTRUCTOR returns a newfile for every oldfile, or nil to
1113 ;; skip. If it skips files for other reasons than a direct user
1114 ;; query, it is supposed to tell why (using dired-log).
1116 ;; Optional MARKER-CHAR is a character with which to mark every
1117 ;; newfile's entry, or t to use the current marker character if the
1118 ;; oldfile was marked.
1120 (let (failures skipped (success-count 0) (total (length fn-list)))
1121 (let (to overwrite-query
1122 overwrite-backup-query) ; for dired-handle-overwrite
1123 (mapcar
1124 (function
1125 (lambda (from)
1126 (setq to (funcall name-constructor from))
1127 (if (equal to from)
1128 (progn
1129 (setq to nil)
1130 (dired-log "Cannot %s to same file: %s\n"
1131 (downcase operation) from)))
1132 (if (not to)
1133 (setq skipped (cons (dired-make-relative from) skipped))
1134 (let* ((overwrite (file-exists-p to))
1135 (dired-overwrite-confirmed ; for dired-handle-overwrite
1136 (and overwrite
1137 (let ((help-form '(format "\
1138 Type SPC or `y' to overwrite file `%s',
1139 DEL or `n' to skip to next,
1140 ESC or `q' to not overwrite any of the remaining files,
1141 `!' to overwrite all remaining files with no more questions." to)))
1142 (dired-query 'overwrite-query
1143 "Overwrite `%s'?" to))))
1144 ;; must determine if FROM is marked before file-creator
1145 ;; gets a chance to delete it (in case of a move).
1146 (actual-marker-char
1147 (cond ((integerp marker-char) marker-char)
1148 (marker-char (dired-file-marker from)) ; slow
1149 (t nil))))
1150 (condition-case err
1151 (progn
1152 (funcall file-creator from to dired-overwrite-confirmed)
1153 (if overwrite
1154 ;; If we get here, file-creator hasn't been aborted
1155 ;; and the old entry (if any) has to be deleted
1156 ;; before adding the new entry.
1157 (dired-remove-file to))
1158 (setq success-count (1+ success-count))
1159 (message "%s: %d of %d" operation success-count total)
1160 (dired-add-file to actual-marker-char))
1161 (file-error ; FILE-CREATOR aborted
1162 (progn
1163 (setq failures (cons (dired-make-relative from) failures))
1164 (dired-log "%s `%s' to `%s' failed:\n%s\n"
1165 operation from to err))))))))
1166 fn-list))
1167 (cond
1168 (failures
1169 (dired-log-summary
1170 (format "%s failed for %d of %d file%s"
1171 operation (length failures) total
1172 (dired-plural-s total))
1173 failures))
1174 (skipped
1175 (dired-log-summary
1176 (format "%s: %d of %d file%s skipped"
1177 operation (length skipped) total
1178 (dired-plural-s total))
1179 skipped))
1181 (message "%s: %s file%s"
1182 operation success-count (dired-plural-s success-count)))))
1183 (dired-move-to-filename))
1185 (defun dired-do-create-files (op-symbol file-creator operation arg
1186 &optional marker-char op1
1187 how-to)
1188 "Create a new file for each marked file.
1189 Prompts user for target, which is a directory in which to create
1190 the new files. Target may be a plain file if only one marked
1191 file exists. The way the default for the target directory is
1192 computed depends on the value of `dired-dwim-target-directory'.
1193 OP-SYMBOL is the symbol for the operation. Function `dired-mark-pop-up'
1194 will determine whether pop-ups are appropriate for this OP-SYMBOL.
1195 FILE-CREATOR and OPERATION as in `dired-create-files'.
1196 ARG as in `dired-get-marked-files'.
1197 Optional arg MARKER-CHAR as in `dired-create-files'.
1198 Optional arg OP1 is an alternate form for OPERATION if there is
1199 only one file.
1200 Optional arg HOW-TO is used to set the value of the into-dir variable
1201 which determines how to treat target.
1202 If into-dir is set to nil then target is not regarded as a directory,
1203 there must be exactly one marked file, else error.
1204 Else if into-dir is set to a list, then target is a generalized
1205 directory (e.g. some sort of archive). The first element of into-dir
1206 must be a function with at least four arguments:
1207 operation as OPERATION above.
1208 rfn-list a list of the relative names for the marked files.
1209 fn-list a list of the absolute names for the marked files.
1210 target.
1211 The rest of into-dir are optional arguments.
1212 Else into-dir is not a list. Target is a directory.
1213 The marked file(s) are created inside the target directory.
1215 If HOW-TO is not given (or nil), then into-dir is set to true if
1216 target is a directory and otherwise to nil.
1217 Else if HOW-TO is t, then into-dir is set to nil.
1218 Else HOW-TO is assumed to be a function of one argument, target,
1219 that looks at target and returns a value for the into-dir
1220 variable. The function `dired-into-dir-with-symlinks' is provided
1221 for the case (common when creating symlinks) that symbolic
1222 links to directories are not to be considered as directories
1223 (as `file-directory-p' would if HOW-TO had been nil)."
1224 (or op1 (setq op1 operation))
1225 (let* ((fn-list (dired-get-marked-files nil arg))
1226 (rfn-list (mapcar (function dired-make-relative) fn-list))
1227 (dired-one-file ; fluid variable inside dired-create-files
1228 (and (consp fn-list) (null (cdr fn-list)) (car fn-list)))
1229 (target-dir (dired-dwim-target-directory))
1230 (default (and dired-one-file
1231 (expand-file-name (file-name-nondirectory (car fn-list))
1232 target-dir)))
1233 (target (expand-file-name ; fluid variable inside dired-create-files
1234 (dired-mark-read-file-name
1235 (concat (if dired-one-file op1 operation) " %s to: ")
1236 target-dir op-symbol arg rfn-list default)))
1237 (into-dir (cond ((null how-to)
1238 ;; Allow DOS/Windows users to change the letter
1239 ;; case of a directory. If we don't test these
1240 ;; conditions up front, file-directory-p below
1241 ;; will return t because the filesystem is
1242 ;; case-insensitive, and Emacs will try to move
1243 ;; foo -> foo/foo, which fails.
1244 (if (and (memq system-type '(ms-dos windows-nt))
1245 (eq op-symbol 'move)
1246 dired-one-file
1247 (string= (downcase
1248 (expand-file-name (car fn-list)))
1249 (downcase
1250 (expand-file-name target)))
1251 (not (string=
1252 (file-name-nondirectory (car fn-list))
1253 (file-name-nondirectory target))))
1255 (file-directory-p target)))
1256 ((eq how-to t) nil)
1257 (t (funcall how-to target)))))
1258 (if (and (consp into-dir) (functionp (car into-dir)))
1259 (apply (car into-dir) operation rfn-list fn-list target (cdr into-dir))
1260 (if (not (or dired-one-file into-dir))
1261 (error "Marked %s: target must be a directory: %s" operation target))
1262 ;; rename-file bombs when moving directories unless we do this:
1263 (or into-dir (setq target (directory-file-name target)))
1264 (dired-create-files
1265 file-creator operation fn-list
1266 (if into-dir ; target is a directory
1267 ;; This function uses fluid variable target when called
1268 ;; inside dired-create-files:
1269 (function
1270 (lambda (from)
1271 (expand-file-name (file-name-nondirectory from) target)))
1272 (function (lambda (from) target)))
1273 marker-char))))
1275 ;; Read arguments for a marked-files command that wants a file name,
1276 ;; perhaps popping up the list of marked files.
1277 ;; ARG is the prefix arg and indicates whether the files came from
1278 ;; marks (ARG=nil) or a repeat factor (integerp ARG).
1279 ;; If the current file was used, the list has but one element and ARG
1280 ;; does not matter. (It is non-nil, non-integer in that case, namely '(4)).
1281 ;; DEFAULT is the default value to return if the user just hits RET;
1282 ;; if it is omitted or nil, then the name of the directory is used.
1284 (defun dired-mark-read-file-name (prompt dir op-symbol arg files
1285 &optional default)
1286 (dired-mark-pop-up
1287 nil op-symbol files
1288 (function read-file-name)
1289 (format prompt (dired-mark-prompt arg files)) dir default))
1291 (defun dired-dwim-target-directory ()
1292 ;; Try to guess which target directory the user may want.
1293 ;; If there is a dired buffer displayed in the next window, use
1294 ;; its current subdir, else use current subdir of this dired buffer.
1295 (let ((this-dir (and (eq major-mode 'dired-mode)
1296 (dired-current-directory))))
1297 ;; non-dired buffer may want to profit from this function, e.g. vm-uudecode
1298 (if dired-dwim-target
1299 (let* ((other-buf (window-buffer (next-window)))
1300 (other-dir (save-excursion
1301 (set-buffer other-buf)
1302 (and (eq major-mode 'dired-mode)
1303 (dired-current-directory)))))
1304 (or other-dir this-dir))
1305 this-dir)))
1307 ;;;###autoload
1308 (defun dired-create-directory (directory)
1309 "Create a directory called DIRECTORY."
1310 (interactive
1311 (list (read-file-name "Create directory: " (dired-current-directory))))
1312 (let ((expanded (directory-file-name (expand-file-name directory))))
1313 (make-directory expanded)
1314 (dired-add-file expanded)
1315 (dired-move-to-filename)))
1317 (defun dired-into-dir-with-symlinks (target)
1318 (and (file-directory-p target)
1319 (not (file-symlink-p target))))
1320 ;; This may not always be what you want, especially if target is your
1321 ;; home directory and it happens to be a symbolic link, as is often the
1322 ;; case with NFS and automounters. Or if you want to make symlinks
1323 ;; into directories that themselves are only symlinks, also quite
1324 ;; common.
1326 ;; So we don't use this function as value for HOW-TO in
1327 ;; dired-do-symlink, which has the minor disadvantage of
1328 ;; making links *into* a symlinked-dir, when you really wanted to
1329 ;; *overwrite* that symlink. In that (rare, I guess) case, you'll
1330 ;; just have to remove that symlink by hand before making your marked
1331 ;; symlinks.
1333 (defvar dired-copy-how-to-fn nil
1334 "nil or a function used by `dired-do-copy' to determine target.
1335 See HOW-TO argument for `dired-do-create-files'.")
1337 ;;;###autoload
1338 (defun dired-do-copy (&optional arg)
1339 "Copy all marked (or next ARG) files, or copy the current file.
1340 This normally preserves the last-modified date when copying.
1341 When operating on just the current file, you specify the new name.
1342 When operating on multiple or marked files, you specify a directory,
1343 and new copies of these files are made in that directory
1344 with the same names that the files currently have. The default
1345 suggested for the target directory depends on the value of
1346 `dired-dwim-target', which see."
1347 (interactive "P")
1348 (let ((dired-recursive-copies dired-recursive-copies))
1349 (dired-do-create-files 'copy (function dired-copy-file)
1350 (if dired-copy-preserve-time "Copy [-p]" "Copy")
1351 arg dired-keep-marker-copy
1352 nil dired-copy-how-to-fn)))
1354 ;;;###autoload
1355 (defun dired-do-symlink (&optional arg)
1356 "Make symbolic links to current file or all marked (or next ARG) files.
1357 When operating on just the current file, you specify the new name.
1358 When operating on multiple or marked files, you specify a directory
1359 and new symbolic links are made in that directory
1360 with the same names that the files currently have. The default
1361 suggested for the target directory depends on the value of
1362 `dired-dwim-target', which see."
1363 (interactive "P")
1364 (dired-do-create-files 'symlink (function make-symbolic-link)
1365 "Symlink" arg dired-keep-marker-symlink))
1367 ;;;###autoload
1368 (defun dired-do-hardlink (&optional arg)
1369 "Add names (hard links) current file or all marked (or next ARG) files.
1370 When operating on just the current file, you specify the new name.
1371 When operating on multiple or marked files, you specify a directory
1372 and new hard links are made in that directory
1373 with the same names that the files currently have. The default
1374 suggested for the target directory depends on the value of
1375 `dired-dwim-target', which see."
1376 (interactive "P")
1377 (dired-do-create-files 'hardlink (function add-name-to-file)
1378 "Hardlink" arg dired-keep-marker-hardlink))
1380 ;;;###autoload
1381 (defun dired-do-rename (&optional arg)
1382 "Rename current file or all marked (or next ARG) files.
1383 When renaming just the current file, you specify the new name.
1384 When renaming multiple or marked files, you specify a directory.
1385 The default suggested for the target directory depends on the value
1386 of `dired-dwim-target', which see."
1387 (interactive "P")
1388 (dired-do-create-files 'move (function dired-rename-file)
1389 "Move" arg dired-keep-marker-rename "Rename"))
1390 ;;;###end dired-cp.el
1392 ;;; 5K
1393 ;;;###begin dired-re.el
1394 (defun dired-do-create-files-regexp
1395 (file-creator operation arg regexp newname &optional whole-path marker-char)
1396 ;; Create a new file for each marked file using regexps.
1397 ;; FILE-CREATOR and OPERATION as in dired-create-files.
1398 ;; ARG as in dired-get-marked-files.
1399 ;; Matches each marked file against REGEXP and constructs the new
1400 ;; filename from NEWNAME (like in function replace-match).
1401 ;; Optional arg WHOLE-PATH means match/replace the whole file name
1402 ;; instead of only the non-directory part of the file.
1403 ;; Optional arg MARKER-CHAR as in dired-create-files.
1404 (let* ((fn-list (dired-get-marked-files nil arg))
1405 (fn-count (length fn-list))
1406 (operation-prompt (concat operation " `%s' to `%s'?"))
1407 (rename-regexp-help-form (format "\
1408 Type SPC or `y' to %s one match, DEL or `n' to skip to next,
1409 `!' to %s all remaining matches with no more questions."
1410 (downcase operation)
1411 (downcase operation)))
1412 (regexp-name-constructor
1413 ;; Function to construct new filename using REGEXP and NEWNAME:
1414 (if whole-path ; easy (but rare) case
1415 (function
1416 (lambda (from)
1417 (let ((to (dired-string-replace-match regexp from newname))
1418 ;; must bind help-form directly around call to
1419 ;; dired-query
1420 (help-form rename-regexp-help-form))
1421 (if to
1422 (and (dired-query 'rename-regexp-query
1423 operation-prompt
1424 from
1427 (dired-log "%s: %s did not match regexp %s\n"
1428 operation from regexp)))))
1429 ;; not whole-path, replace non-directory part only
1430 (function
1431 (lambda (from)
1432 (let* ((new (dired-string-replace-match
1433 regexp (file-name-nondirectory from) newname))
1434 (to (and new ; nil means there was no match
1435 (expand-file-name new
1436 (file-name-directory from))))
1437 (help-form rename-regexp-help-form))
1438 (if to
1439 (and (dired-query 'rename-regexp-query
1440 operation-prompt
1441 (dired-make-relative from)
1442 (dired-make-relative to))
1444 (dired-log "%s: %s did not match regexp %s\n"
1445 operation (file-name-nondirectory from) regexp)))))))
1446 rename-regexp-query)
1447 (dired-create-files
1448 file-creator operation fn-list regexp-name-constructor marker-char)))
1450 (defun dired-mark-read-regexp (operation)
1451 ;; Prompt user about performing OPERATION.
1452 ;; Read and return list of: regexp newname arg whole-path.
1453 (let* ((whole-path
1454 (equal 0 (prefix-numeric-value current-prefix-arg)))
1455 (arg
1456 (if whole-path nil current-prefix-arg))
1457 (regexp
1458 (dired-read-regexp
1459 (concat (if whole-path "Path " "") operation " from (regexp): ")))
1460 (newname
1461 (read-string
1462 (concat (if whole-path "Path " "") operation " " regexp " to: "))))
1463 (list regexp newname arg whole-path)))
1465 ;;;###autoload
1466 (defun dired-do-rename-regexp (regexp newname &optional arg whole-path)
1467 "Rename selected files whose names match REGEXP to NEWNAME.
1469 With non-zero prefix argument ARG, the command operates on the next ARG
1470 files. Otherwise, it operates on all the marked files, or the current
1471 file if none are marked.
1473 As each match is found, the user must type a character saying
1474 what to do with it. For directions, type \\[help-command] at that time.
1475 NEWNAME may contain \\=\\<n> or \\& as in `query-replace-regexp'.
1476 REGEXP defaults to the last regexp used.
1478 With a zero prefix arg, renaming by regexp affects the absolute file name.
1479 Normally, only the non-directory part of the file name is used and changed."
1480 (interactive (dired-mark-read-regexp "Rename"))
1481 (dired-do-create-files-regexp
1482 (function dired-rename-file)
1483 "Rename" arg regexp newname whole-path dired-keep-marker-rename))
1485 ;;;###autoload
1486 (defun dired-do-copy-regexp (regexp newname &optional arg whole-path)
1487 "Copy selected files whose names match REGEXP to NEWNAME.
1488 See function `dired-do-rename-regexp' for more info."
1489 (interactive (dired-mark-read-regexp "Copy"))
1490 (let ((dired-recursive-copies nil)) ; No recursive copies.
1491 (dired-do-create-files-regexp
1492 (function dired-copy-file)
1493 (if dired-copy-preserve-time "Copy [-p]" "Copy")
1494 arg regexp newname whole-path dired-keep-marker-copy)))
1496 ;;;###autoload
1497 (defun dired-do-hardlink-regexp (regexp newname &optional arg whole-path)
1498 "Hardlink selected files whose names match REGEXP to NEWNAME.
1499 See function `dired-do-rename-regexp' for more info."
1500 (interactive (dired-mark-read-regexp "HardLink"))
1501 (dired-do-create-files-regexp
1502 (function add-name-to-file)
1503 "HardLink" arg regexp newname whole-path dired-keep-marker-hardlink))
1505 ;;;###autoload
1506 (defun dired-do-symlink-regexp (regexp newname &optional arg whole-path)
1507 "Symlink selected files whose names match REGEXP to NEWNAME.
1508 See function `dired-do-rename-regexp' for more info."
1509 (interactive (dired-mark-read-regexp "SymLink"))
1510 (dired-do-create-files-regexp
1511 (function make-symbolic-link)
1512 "SymLink" arg regexp newname whole-path dired-keep-marker-symlink))
1514 (defun dired-create-files-non-directory
1515 (file-creator basename-constructor operation arg)
1516 ;; Perform FILE-CREATOR on the non-directory part of marked files
1517 ;; using function BASENAME-CONSTRUCTOR, with query for each file.
1518 ;; OPERATION like in dired-create-files, ARG as in dired-get-marked-files.
1519 (let (rename-non-directory-query)
1520 (dired-create-files
1521 file-creator
1522 operation
1523 (dired-get-marked-files nil arg)
1524 (function
1525 (lambda (from)
1526 (let ((to (concat (file-name-directory from)
1527 (funcall basename-constructor
1528 (file-name-nondirectory from)))))
1529 (and (let ((help-form (format "\
1530 Type SPC or `y' to %s one file, DEL or `n' to skip to next,
1531 `!' to %s all remaining matches with no more questions."
1532 (downcase operation)
1533 (downcase operation))))
1534 (dired-query 'rename-non-directory-query
1535 (concat operation " `%s' to `%s'")
1536 (dired-make-relative from)
1537 (dired-make-relative to)))
1538 to))))
1539 dired-keep-marker-rename)))
1541 (defun dired-rename-non-directory (basename-constructor operation arg)
1542 (dired-create-files-non-directory
1543 (function dired-rename-file)
1544 basename-constructor operation arg))
1546 ;;;###autoload
1547 (defun dired-upcase (&optional arg)
1548 "Rename all marked (or next ARG) files to upper case."
1549 (interactive "P")
1550 (dired-rename-non-directory (function upcase) "Rename upcase" arg))
1552 ;;;###autoload
1553 (defun dired-downcase (&optional arg)
1554 "Rename all marked (or next ARG) files to lower case."
1555 (interactive "P")
1556 (dired-rename-non-directory (function downcase) "Rename downcase" arg))
1558 ;;;###end dired-re.el
1560 ;;; 13K
1561 ;;;###begin dired-ins.el
1563 ;;;###autoload
1564 (defun dired-maybe-insert-subdir (dirname &optional
1565 switches no-error-if-not-dir-p)
1566 "Insert this subdirectory into the same dired buffer.
1567 If it is already present, just move to it (type \\[dired-do-redisplay] to refresh),
1568 else inserts it at its natural place (as `ls -lR' would have done).
1569 With a prefix arg, you may edit the ls switches used for this listing.
1570 You can add `R' to the switches to expand the whole tree starting at
1571 this subdirectory.
1572 This function takes some pains to conform to `ls -lR' output."
1573 (interactive
1574 (list (dired-get-filename)
1575 (if current-prefix-arg
1576 (read-string "Switches for listing: " dired-actual-switches))))
1577 (let ((opoint (point)))
1578 ;; We don't need a marker for opoint as the subdir is always
1579 ;; inserted *after* opoint.
1580 (setq dirname (file-name-as-directory dirname))
1581 (or (and (not switches)
1582 (dired-goto-subdir dirname))
1583 (dired-insert-subdir dirname switches no-error-if-not-dir-p))
1584 ;; Push mark so that it's easy to find back. Do this after the
1585 ;; insert message so that the user sees the `Mark set' message.
1586 (push-mark opoint)))
1588 ;;;###autoload
1589 (defun dired-insert-subdir (dirname &optional switches no-error-if-not-dir-p)
1590 "Insert this subdirectory into the same dired buffer.
1591 If it is already present, overwrites previous entry,
1592 else inserts it at its natural place (as `ls -lR' would have done).
1593 With a prefix arg, you may edit the `ls' switches used for this listing.
1594 You can add `R' to the switches to expand the whole tree starting at
1595 this subdirectory.
1596 This function takes some pains to conform to `ls -lR' output."
1597 ;; NO-ERROR-IF-NOT-DIR-P needed for special filesystems like
1598 ;; Prospero where dired-ls does the right thing, but
1599 ;; file-directory-p has not been redefined.
1600 (interactive
1601 (list (dired-get-filename)
1602 (if current-prefix-arg
1603 (read-string "Switches for listing: " dired-actual-switches))))
1604 (setq dirname (file-name-as-directory (expand-file-name dirname)))
1605 (dired-insert-subdir-validate dirname switches)
1606 (or no-error-if-not-dir-p
1607 (file-directory-p dirname)
1608 (error "Attempt to insert a non-directory: %s" dirname))
1609 (let ((elt (assoc dirname dired-subdir-alist))
1610 switches-have-R mark-alist case-fold-search buffer-read-only)
1611 ;; case-fold-search is nil now, so we can test for capital `R':
1612 (if (setq switches-have-R (and switches (string-match "R" switches)))
1613 ;; avoid duplicated subdirs
1614 (setq mark-alist (dired-kill-tree dirname t)))
1615 (if elt
1616 ;; If subdir is already present, remove it and remember its marks
1617 (setq mark-alist (nconc (dired-insert-subdir-del elt) mark-alist))
1618 (dired-insert-subdir-newpos dirname)) ; else compute new position
1619 (dired-insert-subdir-doupdate
1620 dirname elt (dired-insert-subdir-doinsert dirname switches))
1621 (if switches-have-R (dired-build-subdir-alist switches))
1622 (dired-initial-position dirname)
1623 (save-excursion (dired-mark-remembered mark-alist))))
1625 ;; This is a separate function for dired-vms.
1626 (defun dired-insert-subdir-validate (dirname &optional switches)
1627 ;; Check that it is valid to insert DIRNAME with SWITCHES.
1628 ;; Signal an error if invalid (e.g. user typed `i' on `..').
1629 (or (dired-in-this-tree dirname (expand-file-name default-directory))
1630 (error "%s: not in this directory tree" dirname))
1631 (if switches
1632 (let (case-fold-search)
1633 (mapcar
1634 (function
1635 (lambda (x)
1636 (or (eq (null (string-match x switches))
1637 (null (string-match x dired-actual-switches)))
1638 (error "Can't have dirs with and without -%s switches together"
1639 x))))
1640 ;; all switches that make a difference to dired-get-filename:
1641 '("F" "b")))))
1643 (defun dired-alist-add (dir new-marker)
1644 ;; Add new DIR at NEW-MARKER. Sort alist.
1645 (dired-alist-add-1 dir new-marker)
1646 (dired-alist-sort))
1648 (defun dired-alist-sort ()
1649 ;; Keep the alist sorted on buffer position.
1650 (setq dired-subdir-alist
1651 (sort dired-subdir-alist
1652 (function (lambda (elt1 elt2)
1653 (> (dired-get-subdir-min elt1)
1654 (dired-get-subdir-min elt2)))))))
1656 (defun dired-kill-tree (dirname &optional remember-marks)
1657 "Kill all proper subdirs of DIRNAME, excluding DIRNAME itself.
1658 With optional arg REMEMBER-MARKS, return an alist of marked files."
1659 (interactive "DKill tree below directory: ")
1660 (setq dirname (expand-file-name dirname))
1661 (let ((s-alist dired-subdir-alist) dir m-alist)
1662 (while s-alist
1663 (setq dir (car (car s-alist))
1664 s-alist (cdr s-alist))
1665 (if (and (not (string-equal dir dirname))
1666 (dired-in-this-tree dir dirname)
1667 (dired-goto-subdir dir))
1668 (setq m-alist (nconc (dired-kill-subdir remember-marks) m-alist))))
1669 m-alist))
1671 (defun dired-insert-subdir-newpos (new-dir)
1672 ;; Find pos for new subdir, according to tree order.
1673 ;;(goto-char (point-max))
1674 (let ((alist dired-subdir-alist) elt dir pos new-pos)
1675 (while alist
1676 (setq elt (car alist)
1677 alist (cdr alist)
1678 dir (car elt)
1679 pos (dired-get-subdir-min elt))
1680 (if (dired-tree-lessp dir new-dir)
1681 ;; Insert NEW-DIR after DIR
1682 (setq new-pos (dired-get-subdir-max elt)
1683 alist nil)))
1684 (goto-char new-pos))
1685 ;; want a separating newline between subdirs
1686 (or (eobp)
1687 (forward-line -1))
1688 (insert "\n")
1689 (point))
1691 (defun dired-insert-subdir-del (element)
1692 ;; Erase an already present subdir (given by ELEMENT) from buffer.
1693 ;; Move to that buffer position. Return a mark-alist.
1694 (let ((begin-marker (dired-get-subdir-min element)))
1695 (goto-char begin-marker)
1696 ;; Are at beginning of subdir (and inside it!). Now determine its end:
1697 (goto-char (dired-subdir-max))
1698 (or (eobp);; want a separating newline _between_ subdirs:
1699 (forward-char -1))
1700 (prog1
1701 (dired-remember-marks begin-marker (point))
1702 (delete-region begin-marker (point)))))
1704 (defun dired-insert-subdir-doinsert (dirname switches)
1705 ;; Insert ls output after point and put point on the correct
1706 ;; position for the subdir alist.
1707 ;; Return the boundary of the inserted text (as list of BEG and END).
1708 (let ((begin (point)) end)
1709 (message "Reading directory %s..." dirname)
1710 (let ((dired-actual-switches
1711 (or switches
1712 (dired-replace-in-string "R" "" dired-actual-switches))))
1713 (if (equal dirname (car (car (reverse dired-subdir-alist))))
1714 ;; top level directory may contain wildcards:
1715 (dired-readin-insert dired-directory)
1716 (let ((opoint (point)))
1717 (insert-directory dirname dired-actual-switches nil t)
1718 (dired-insert-set-properties opoint (point)))))
1719 (message "Reading directory %s...done" dirname)
1720 (setq end (point-marker))
1721 (indent-rigidly begin end 2)
1722 ;; call dired-insert-headerline afterwards, as under VMS dired-ls
1723 ;; does insert the headerline itself and the insert function just
1724 ;; moves point.
1725 ;; Need a marker for END as this inserts text.
1726 (goto-char begin)
1727 (if (not (looking-at "^ /.*:$"))
1728 (dired-insert-headerline dirname))
1729 ;; point is now like in dired-build-subdir-alist
1730 (prog1
1731 (list begin (marker-position end))
1732 (set-marker end nil))))
1734 (defun dired-insert-subdir-doupdate (dirname elt beg-end)
1735 ;; Point is at the correct subdir alist position for ELT,
1736 ;; BEG-END is the subdir-region (as list of begin and end).
1737 (if elt ; subdir was already present
1738 ;; update its position (should actually be unchanged)
1739 (set-marker (dired-get-subdir-min elt) (point-marker))
1740 (dired-alist-add dirname (point-marker)))
1741 ;; The hook may depend on the subdir-alist containing the just
1742 ;; inserted subdir, so run it after dired-alist-add:
1743 (if dired-after-readin-hook
1744 (save-excursion
1745 (let ((begin (nth 0 beg-end))
1746 (end (nth 1 beg-end)))
1747 (goto-char begin)
1748 (save-restriction
1749 (narrow-to-region begin end)
1750 ;; hook may add or delete lines, but the subdir boundary
1751 ;; marker floats
1752 (run-hooks 'dired-after-readin-hook))))))
1754 (defun dired-tree-lessp (dir1 dir2)
1755 ;; Lexicographic order on file name components, like `ls -lR':
1756 ;; DIR1 < DIR2 iff DIR1 comes *before* DIR2 in an `ls -lR' listing,
1757 ;; i.e., iff DIR1 is a (grand)parent dir of DIR2,
1758 ;; or DIR1 and DIR2 are in the same parentdir and their last
1759 ;; components are string-lessp.
1760 ;; Thus ("/usr/" "/usr/bin") and ("/usr/a/" "/usr/b/") are tree-lessp.
1761 ;; string-lessp could arguably be replaced by file-newer-than-file-p
1762 ;; if dired-actual-switches contained `t'.
1763 (setq dir1 (file-name-as-directory dir1)
1764 dir2 (file-name-as-directory dir2))
1765 (let ((components-1 (dired-split "/" dir1))
1766 (components-2 (dired-split "/" dir2)))
1767 (while (and components-1
1768 components-2
1769 (equal (car components-1) (car components-2)))
1770 (setq components-1 (cdr components-1)
1771 components-2 (cdr components-2)))
1772 (let ((c1 (car components-1))
1773 (c2 (car components-2)))
1775 (cond ((and c1 c2)
1776 (string-lessp c1 c2))
1777 ((and (null c1) (null c2))
1778 nil) ; they are equal, not lessp
1779 ((null c1) ; c2 is a subdir of c1: c1<c2
1781 ((null c2) ; c1 is a subdir of c2: c1>c2
1782 nil)
1783 (t (error "This can't happen"))))))
1785 ;; There should be a builtin split function - inverse to mapconcat.
1786 (defun dired-split (pat str &optional limit)
1787 "Splitting on regexp PAT, turn string STR into a list of substrings.
1788 Optional third arg LIMIT (>= 1) is a limit to the length of the
1789 resulting list.
1790 Thus, if SEP is a regexp that only matches itself,
1792 (mapconcat 'identity (dired-split SEP STRING) SEP)
1794 is always equal to STRING."
1795 (let* ((start (string-match pat str))
1796 (result (list (substring str 0 start)))
1797 (count 1)
1798 (end (if start (match-end 0))))
1799 (if end ; else nothing left
1800 (while (and (or (not (integerp limit))
1801 (< count limit))
1802 (string-match pat str end))
1803 (setq start (match-beginning 0)
1804 count (1+ count)
1805 result (cons (substring str end start) result)
1806 end (match-end 0)
1807 start end)
1809 (if (and (or (not (integerp limit))
1810 (< count limit))
1811 end) ; else nothing left
1812 (setq result
1813 (cons (substring str end) result)))
1814 (nreverse result)))
1816 ;;; moving by subdirectories
1818 ;;;###autoload
1819 (defun dired-prev-subdir (arg &optional no-error-if-not-found no-skip)
1820 "Go to previous subdirectory, regardless of level.
1821 When called interactively and not on a subdir line, go to this subdir's line."
1822 ;;(interactive "p")
1823 (interactive
1824 (list (if current-prefix-arg
1825 (prefix-numeric-value current-prefix-arg)
1826 ;; if on subdir start already, don't stay there!
1827 (if (dired-get-subdir) 1 0))))
1828 (dired-next-subdir (- arg) no-error-if-not-found no-skip))
1830 (defun dired-subdir-min ()
1831 (save-excursion
1832 (if (not (dired-prev-subdir 0 t t))
1833 (error "Not in a subdir!")
1834 (point))))
1836 ;;;###autoload
1837 (defun dired-goto-subdir (dir)
1838 "Go to end of header line of DIR in this dired buffer.
1839 Return value of point on success, otherwise return nil.
1840 The next char is either \\n, or \\r if DIR is hidden."
1841 (interactive
1842 (prog1 ; let push-mark display its message
1843 (list (expand-file-name
1844 (completing-read "Goto in situ directory: " ; prompt
1845 dired-subdir-alist ; table
1846 nil ; predicate
1847 t ; require-match
1848 (dired-current-directory))))
1849 (push-mark)))
1850 (setq dir (file-name-as-directory dir))
1851 (let ((elt (assoc dir dired-subdir-alist)))
1852 (and elt
1853 (goto-char (dired-get-subdir-min elt))
1854 ;; dired-subdir-hidden-p and dired-add-entry depend on point being
1855 ;; at either \r or \n after this function succeeds.
1856 (progn (skip-chars-forward "^\r\n")
1857 (point)))))
1859 ;;;###autoload
1860 (defun dired-mark-subdir-files ()
1861 "Mark all files except `.' and `..' in current subdirectory.
1862 If the Dired buffer shows multiple directories, this command
1863 marks the files listed in the subdirectory that point is in."
1864 (interactive)
1865 (let ((p-min (dired-subdir-min)))
1866 (dired-mark-files-in-region p-min (dired-subdir-max))))
1868 ;;;###autoload
1869 (defun dired-kill-subdir (&optional remember-marks)
1870 "Remove all lines of current subdirectory.
1871 Lower levels are unaffected."
1872 ;; With optional REMEMBER-MARKS, return a mark-alist.
1873 (interactive)
1874 (let ((beg (dired-subdir-min))
1875 (end (dired-subdir-max))
1876 buffer-read-only cur-dir)
1877 (setq cur-dir (dired-current-directory))
1878 (if (equal cur-dir default-directory)
1879 (error "Attempt to kill top level directory"))
1880 (prog1
1881 (if remember-marks (dired-remember-marks beg end))
1882 (delete-region beg end)
1883 (if (eobp) ; don't leave final blank line
1884 (delete-char -1))
1885 (dired-unsubdir cur-dir))))
1887 (defun dired-unsubdir (dir)
1888 ;; Remove DIR from the alist
1889 (setq dired-subdir-alist
1890 (delq (assoc dir dired-subdir-alist) dired-subdir-alist)))
1892 ;;;###autoload
1893 (defun dired-tree-up (arg)
1894 "Go up ARG levels in the dired tree."
1895 (interactive "p")
1896 (let ((dir (dired-current-directory)))
1897 (while (>= arg 1)
1898 (setq arg (1- arg)
1899 dir (file-name-directory (directory-file-name dir))))
1900 ;;(setq dir (expand-file-name dir))
1901 (or (dired-goto-subdir dir)
1902 (error "Cannot go up to %s - not in this tree" dir))))
1904 ;;;###autoload
1905 (defun dired-tree-down ()
1906 "Go down in the dired tree."
1907 (interactive)
1908 (let ((dir (dired-current-directory)) ; has slash
1909 pos case-fold-search) ; filenames are case sensitive
1910 (let ((rest (reverse dired-subdir-alist)) elt)
1911 (while rest
1912 (setq elt (car rest)
1913 rest (cdr rest))
1914 (if (dired-in-this-tree (directory-file-name (car elt)) dir)
1915 (setq rest nil
1916 pos (dired-goto-subdir (car elt))))))
1917 (if pos
1918 (goto-char pos)
1919 (error "At the bottom"))))
1921 ;;; hiding
1923 (defun dired-unhide-subdir ()
1924 (let (buffer-read-only)
1925 (subst-char-in-region (dired-subdir-min) (dired-subdir-max) ?\r ?\n)))
1927 (defun dired-hide-check ()
1928 (or selective-display
1929 (error "selective-display must be t for subdir hiding to work!")))
1931 (defun dired-subdir-hidden-p (dir)
1932 (and selective-display
1933 (save-excursion
1934 (dired-goto-subdir dir)
1935 (looking-at "\r"))))
1937 ;;;###autoload
1938 (defun dired-hide-subdir (arg)
1939 "Hide or unhide the current subdirectory and move to next directory.
1940 Optional prefix arg is a repeat factor.
1941 Use \\[dired-hide-all] to (un)hide all directories."
1942 (interactive "p")
1943 (dired-hide-check)
1944 (while (>= (setq arg (1- arg)) 0)
1945 (let* ((cur-dir (dired-current-directory))
1946 (hidden-p (dired-subdir-hidden-p cur-dir))
1947 (elt (assoc cur-dir dired-subdir-alist))
1948 (end-pos (1- (dired-get-subdir-max elt)))
1949 buffer-read-only)
1950 ;; keep header line visible, hide rest
1951 (goto-char (dired-get-subdir-min elt))
1952 (skip-chars-forward "^\n\r")
1953 (if hidden-p
1954 (subst-char-in-region (point) end-pos ?\r ?\n)
1955 (subst-char-in-region (point) end-pos ?\n ?\r)))
1956 (dired-next-subdir 1 t)))
1958 ;;;###autoload
1959 (defun dired-hide-all (arg)
1960 "Hide all subdirectories, leaving only their header lines.
1961 If there is already something hidden, make everything visible again.
1962 Use \\[dired-hide-subdir] to (un)hide a particular subdirectory."
1963 (interactive "P")
1964 (dired-hide-check)
1965 (let (buffer-read-only)
1966 (if (save-excursion
1967 (goto-char (point-min))
1968 (search-forward "\r" nil t))
1969 ;; unhide - bombs on \r in filenames
1970 (subst-char-in-region (point-min) (point-max) ?\r ?\n)
1971 ;; hide
1972 (let ((pos (point-max)) ; pos of end of last directory
1973 (alist dired-subdir-alist))
1974 (while alist ; while there are dirs before pos
1975 (subst-char-in-region (dired-get-subdir-min (car alist)) ; pos of prev dir
1976 (save-excursion
1977 (goto-char pos) ; current dir
1978 ;; we're somewhere on current dir's line
1979 (forward-line -1)
1980 (point))
1981 ?\n ?\r)
1982 (setq pos (dired-get-subdir-min (car alist))) ; prev dir gets current dir
1983 (setq alist (cdr alist)))))))
1985 ;;;###end dired-ins.el
1988 ;; Functions for searching in tags style among marked files.
1990 ;;;###autoload
1991 (defun dired-do-search (regexp)
1992 "Search through all marked files for a match for REGEXP.
1993 Stops when a match is found.
1994 To continue searching for next match, use command \\[tags-loop-continue]."
1995 (interactive "sSearch marked files (regexp): ")
1996 (tags-search regexp '(dired-get-marked-files nil nil 'dired-nondirectory-p)))
1998 ;;;###autoload
1999 (defun dired-do-query-replace-regexp (from to &optional delimited)
2000 "Do `query-replace-regexp' of FROM with TO, on all marked files.
2001 Third arg DELIMITED (prefix arg) means replace only word-delimited matches.
2002 If you exit (\\[keyboard-quit], RET or q), you can resume the query replace
2003 with the command \\[tags-loop-continue]."
2004 (interactive
2005 "sQuery replace in marked files (regexp): \nsQuery replace %s by: \nP")
2006 (tags-query-replace from to delimited
2007 '(dired-get-marked-files nil nil 'dired-nondirectory-p)))
2009 (defun dired-nondirectory-p (file)
2010 (not (file-directory-p file)))
2012 ;;;###autoload
2013 (defun dired-show-file-type (file &optional deref-symlinks)
2014 "Print the type of FILE, according to the `file' command.
2015 If FILE is a symbolic link and the optional argument DEREF-SYMLINKS is
2016 true then the type of the file linked to by FILE is printed instead."
2017 (interactive (list (dired-get-filename t) current-prefix-arg))
2018 (with-temp-buffer
2019 (if deref-symlinks
2020 (call-process "file" nil t t "-L" file)
2021 (call-process "file" nil t t file))
2022 (when (bolp)
2023 (backward-delete-char 1))
2024 (message (buffer-string))))
2026 (provide 'dired-aux)
2028 ;;; dired-aux.el ends here