(defcustom): Get rid of eval-and-compile.
[emacs.git] / lisp / dired-aux.el
blobd6926665ee6737ed7b4a78a40288d42bfaf5c0de
1 ;;; dired-aux.el --- less commonly used parts of dired -*-byte-compile-dynamic: t;-*-
3 ;; Copyright (C) 1985, 1986, 1992, 1994 Free Software Foundation, Inc.
5 ;; Author: Sebastian Kremer <sk@thp.uni-koeln.de>.
7 ;; This file is part of GNU Emacs.
9 ;; GNU Emacs is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 2, or (at your option)
12 ;; any later version.
14 ;; GNU Emacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 ;; Boston, MA 02111-1307, USA.
24 ;;; Commentary:
26 ;; The parts of dired mode not normally used. This is a space-saving hack
27 ;; to avoid having to load a large mode when all that's wanted are a few
28 ;; functions.
30 ;; Rewritten in 1990/1991 to add tree features, file marking and
31 ;; sorting by Sebastian Kremer <sk@thp.uni-koeln.de>.
32 ;; Finished up by rms in 1992.
34 ;;; Code:
36 ;; We need macros in dired.el to compile properly.
37 (eval-when-compile (require 'dired))
39 ;;; 15K
40 ;;;###begin dired-cmd.el
41 ;; Diffing and compressing
43 ;;;###autoload
44 (defun dired-diff (file &optional switches)
45 "Compare file at point with file FILE using `diff'.
46 FILE defaults to the file at the mark.
47 The prompted-for file is the first file given to `diff'.
48 With prefix arg, prompt for second argument SWITCHES,
49 which is options for `diff'."
50 (interactive
51 (let ((default (if (mark t)
52 (save-excursion (goto-char (mark t))
53 (dired-get-filename t t)))))
54 (require 'diff)
55 (list (read-file-name (format "Diff %s with: %s"
56 (dired-get-filename t)
57 (if default
58 (concat "(default " default ") ")
59 ""))
60 (dired-current-directory) default t)
61 (if current-prefix-arg
62 (read-string "Options for diff: "
63 (if (stringp diff-switches)
64 diff-switches
65 (mapconcat 'identity diff-switches " ")))))))
66 (diff file (dired-get-filename t) switches))
68 ;;;###autoload
69 (defun dired-backup-diff (&optional switches)
70 "Diff this file with its backup file or vice versa.
71 Uses the latest backup, if there are several numerical backups.
72 If this file is a backup, diff it with its original.
73 The backup file is the first file given to `diff'.
74 With prefix arg, prompt for argument SWITCHES which is options for `diff'."
75 (interactive
76 (if current-prefix-arg
77 (list (read-string "Options for diff: "
78 (if (stringp diff-switches)
79 diff-switches
80 (mapconcat 'identity diff-switches " "))))
81 nil))
82 (diff-backup (dired-get-filename) switches))
84 (defun dired-do-chxxx (attribute-name program op-symbol arg)
85 ;; Change file attributes (mode, group, owner) of marked files and
86 ;; refresh their file lines.
87 ;; ATTRIBUTE-NAME is a string describing the attribute to the user.
88 ;; PROGRAM is the program used to change the attribute.
89 ;; OP-SYMBOL is the type of operation (for use in dired-mark-pop-up).
90 ;; ARG describes which files to use, as in dired-get-marked-files.
91 (let* ((files (dired-get-marked-files t arg))
92 (new-attribute
93 (dired-mark-read-string
94 (concat "Change " attribute-name " of %s to: ")
95 nil op-symbol arg files))
96 (operation (concat program " " new-attribute))
97 failures)
98 (setq failures
99 (dired-bunch-files 10000
100 (function dired-check-process)
101 (append
102 (list operation program new-attribute)
103 (if (string-match "gnu" system-configuration)
104 '("--") nil))
105 files))
106 (dired-do-redisplay arg);; moves point if ARG is an integer
107 (if failures
108 (dired-log-summary
109 (format "%s: error" operation)
110 nil))))
112 ;;;###autoload
113 (defun dired-do-chmod (&optional arg)
114 "Change the mode of the marked (or next ARG) files.
115 This calls chmod, thus symbolic modes like `g+w' are allowed."
116 (interactive "P")
117 (dired-do-chxxx "Mode" dired-chmod-program 'chmod arg))
119 ;;;###autoload
120 (defun dired-do-chgrp (&optional arg)
121 "Change the group of the marked (or next ARG) files."
122 (interactive "P")
123 (if (memq system-type '(ms-dos windows-nt))
124 (error "chgrp not supported on this system."))
125 (dired-do-chxxx "Group" "chgrp" 'chgrp arg))
127 ;;;###autoload
128 (defun dired-do-chown (&optional arg)
129 "Change the owner of the marked (or next ARG) files."
130 (interactive "P")
131 (if (memq system-type '(ms-dos windows-nt))
132 (error "chown not supported on this system."))
133 (dired-do-chxxx "Owner" dired-chown-program 'chown arg))
135 ;; Process all the files in FILES in batches of a convenient size,
136 ;; by means of (FUNCALL FUNCTION ARGS... SOME-FILES...).
137 ;; Batches are chosen to need less than MAX chars for the file names,
138 ;; allowing 3 extra characters of separator per file name.
139 (defun dired-bunch-files (max function args files)
140 (let (pending
141 (pending-length 0)
142 failures)
143 ;; Accumulate files as long as they fit in MAX chars,
144 ;; then process the ones accumulated so far.
145 (while files
146 (let* ((thisfile (car files))
147 (thislength (+ (length thisfile) 3))
148 (rest (cdr files)))
149 ;; If we have at least 1 pending file
150 ;; and this file won't fit in the length limit, process now.
151 (if (and pending (> (+ thislength pending-length) max))
152 (setq failures
153 (nconc (apply function (append args pending))
154 failures)
155 pending nil
156 pending-length 0))
157 ;; Do (setq pending (cons thisfile pending))
158 ;; but reuse the cons that was in `files'.
159 (setcdr files pending)
160 (setq pending files)
161 (setq pending-length (+ thislength pending-length))
162 (setq files rest)))
163 (nconc (apply function (append args pending))
164 failures)))
166 ;;;###autoload
167 (defun dired-do-print (&optional arg)
168 "Print the marked (or next ARG) files.
169 Uses the shell command coming from variables `lpr-command' and
170 `lpr-switches' as default."
171 (interactive "P")
172 (let* ((file-list (dired-get-marked-files t arg))
173 (command (dired-mark-read-string
174 "Print %s with: "
175 (mapconcat 'identity
176 (cons lpr-command
177 (if (stringp lpr-switches)
178 (list lpr-switches)
179 lpr-switches))
180 " ")
181 'print arg file-list)))
182 (dired-run-shell-command (dired-shell-stuff-it command file-list nil))))
184 ;; Read arguments for a marked-files command that wants a string
185 ;; that is not a file name,
186 ;; perhaps popping up the list of marked files.
187 ;; ARG is the prefix arg and indicates whether the files came from
188 ;; marks (ARG=nil) or a repeat factor (integerp ARG).
189 ;; If the current file was used, the list has but one element and ARG
190 ;; does not matter. (It is non-nil, non-integer in that case, namely '(4)).
192 (defun dired-mark-read-string (prompt initial op-symbol arg files)
193 ;; PROMPT for a string, with INITIAL input.
194 ;; Other args are used to give user feedback and pop-up:
195 ;; OP-SYMBOL of command, prefix ARG, marked FILES.
196 (dired-mark-pop-up
197 nil op-symbol files
198 (function read-string)
199 (format prompt (dired-mark-prompt arg files)) initial))
201 ;;; Cleaning a directory: flagging some backups for deletion.
203 (defvar dired-file-version-alist)
205 (defun dired-clean-directory (keep)
206 "Flag numerical backups for deletion.
207 Spares `dired-kept-versions' latest versions, and `kept-old-versions' oldest.
208 Positive prefix arg KEEP overrides `dired-kept-versions';
209 Negative prefix arg KEEP overrides `kept-old-versions' with KEEP made positive.
211 To clear the flags on these files, you can use \\[dired-flag-backup-files]
212 with a prefix argument."
213 (interactive "P")
214 (setq keep (if keep (prefix-numeric-value keep) dired-kept-versions))
215 (let ((early-retention (if (< keep 0) (- keep) kept-old-versions))
216 (late-retention (if (<= keep 0) dired-kept-versions keep))
217 (dired-file-version-alist ()))
218 (message "Cleaning numerical backups (keeping %d late, %d old)..."
219 late-retention early-retention)
220 ;; Look at each file.
221 ;; If the file has numeric backup versions,
222 ;; put on dired-file-version-alist an element of the form
223 ;; (FILENAME . VERSION-NUMBER-LIST)
224 (dired-map-dired-file-lines (function dired-collect-file-versions))
225 ;; Sort each VERSION-NUMBER-LIST,
226 ;; and remove the versions not to be deleted.
227 (let ((fval dired-file-version-alist))
228 (while fval
229 (let* ((sorted-v-list (cons 'q (sort (cdr (car fval)) '<)))
230 (v-count (length sorted-v-list)))
231 (if (> v-count (+ early-retention late-retention))
232 (rplacd (nthcdr early-retention sorted-v-list)
233 (nthcdr (- v-count late-retention)
234 sorted-v-list)))
235 (rplacd (car fval)
236 (cdr sorted-v-list)))
237 (setq fval (cdr fval))))
238 ;; Look at each file. If it is a numeric backup file,
239 ;; find it in a VERSION-NUMBER-LIST and maybe flag it for deletion.
240 (dired-map-dired-file-lines (function dired-trample-file-versions))
241 (message "Cleaning numerical backups...done")))
243 ;;; Subroutines of dired-clean-directory.
245 (defun dired-map-dired-file-lines (fun)
246 ;; Perform FUN with point at the end of each non-directory line.
247 ;; FUN takes one argument, the filename (complete pathname).
248 (save-excursion
249 (let (file buffer-read-only)
250 (goto-char (point-min))
251 (while (not (eobp))
252 (save-excursion
253 (and (not (looking-at dired-re-dir))
254 (not (eolp))
255 (setq file (dired-get-filename nil t)) ; nil on non-file
256 (progn (end-of-line)
257 (funcall fun file))))
258 (forward-line 1)))))
260 (defun dired-collect-file-versions (fn)
261 (let ((fn (file-name-sans-versions fn)))
262 ;; Only do work if this file is not already in the alist.
263 (if (assoc fn dired-file-version-alist)
265 ;; If it looks like file FN has versions, return a list of the versions.
266 ;;That is a list of strings which are file names.
267 ;;The caller may want to flag some of these files for deletion.
268 (let* ((base-versions
269 (concat (file-name-nondirectory fn) ".~"))
270 (backup-extract-version-start (length base-versions))
271 (possibilities (file-name-all-completions
272 base-versions
273 (file-name-directory fn)))
274 (versions (mapcar 'backup-extract-version possibilities)))
275 (if versions
276 (setq dired-file-version-alist
277 (cons (cons fn versions)
278 dired-file-version-alist)))))))
280 (defun dired-trample-file-versions (fn)
281 (let* ((start-vn (string-match "\\.~[0-9]+~$" fn))
282 base-version-list)
283 (and start-vn
284 (setq base-version-list ; there was a base version to which
285 (assoc (substring fn 0 start-vn) ; this looks like a
286 dired-file-version-alist)) ; subversion
287 (not (memq (string-to-int (substring fn (+ 2 start-vn)))
288 base-version-list)) ; this one doesn't make the cut
289 (progn (beginning-of-line)
290 (delete-char 1)
291 (insert dired-del-marker)))))
293 ;;; Shell commands
294 ;;>>> install (move this function into simple.el)
295 (defun dired-shell-quote (filename)
296 "Quote a file name for inferior shell (see variable `shell-file-name')."
297 ;; Quote everything except POSIX filename characters.
298 ;; This should be safe enough even for really weird shells.
299 (let ((result "") (start 0) end)
300 (while (string-match "[^-0-9a-zA-Z_./]" filename start)
301 (setq end (match-beginning 0)
302 result (concat result (substring filename start end)
303 "\\" (substring filename end (1+ end)))
304 start (1+ end)))
305 (concat result (substring filename start))))
307 (defun dired-read-shell-command (prompt arg files)
308 ;; "Read a dired shell command prompting with PROMPT (using read-string).
309 ;;ARG is the prefix arg and may be used to indicate in the prompt which
310 ;; files are affected.
311 ;;This is an extra function so that you can redefine it, e.g., to use gmhist."
312 (dired-mark-pop-up
313 nil 'shell files
314 (function read-string)
315 (format prompt (dired-mark-prompt arg files))
316 nil 'shell-command-history))
318 ;; The in-background argument is only needed in Emacs 18 where
319 ;; shell-command doesn't understand an appended ampersand `&'.
320 ;;;###autoload
321 (defun dired-do-shell-command (command &optional arg)
322 "Run a shell command COMMAND on the marked files.
323 If no files are marked or a specific numeric prefix arg is given,
324 the next ARG files are used. Just \\[universal-argument] means the current file.
325 The prompt mentions the file(s) or the marker, as appropriate.
327 If there is output, it goes to a separate buffer.
329 Normally the command is run on each file individually.
330 However, if there is a `*' in the command then it is run
331 just once with the entire file list substituted there.
333 No automatic redisplay of dired buffers is attempted, as there's no
334 telling what files the command may have changed. Type
335 \\[dired-do-redisplay] to redisplay the marked files.
337 The shell command has the top level directory as working directory, so
338 output files usually are created there instead of in a subdir."
339 ;;Functions dired-run-shell-command and dired-shell-stuff-it do the
340 ;;actual work and can be redefined for customization.
341 (interactive (list
342 ;; Want to give feedback whether this file or marked files are used:
343 (dired-read-shell-command (concat "! on "
344 "%s: ")
345 current-prefix-arg
346 (dired-get-marked-files
347 t current-prefix-arg))
348 current-prefix-arg))
349 (let* ((on-each (not (string-match "\\*" command)))
350 (file-list (dired-get-marked-files t arg)))
351 (if on-each
352 (dired-bunch-files
353 (- 10000 (length command))
354 (function (lambda (&rest files)
355 (dired-run-shell-command
356 (dired-shell-stuff-it command files t arg))))
358 file-list)
359 ;; execute the shell command
360 (dired-run-shell-command
361 (dired-shell-stuff-it command file-list nil arg)))))
363 ;; Might use {,} for bash or csh:
364 (defvar dired-mark-prefix ""
365 "Prepended to marked files in dired shell commands.")
366 (defvar dired-mark-postfix ""
367 "Appended to marked files in dired shell commands.")
368 (defvar dired-mark-separator " "
369 "Separates marked files in dired shell commands.")
371 (defun dired-shell-stuff-it (command file-list on-each &optional raw-arg)
372 ;; "Make up a shell command line from COMMAND and FILE-LIST.
373 ;; If ON-EACH is t, COMMAND should be applied to each file, else
374 ;; simply concat all files and apply COMMAND to this.
375 ;; FILE-LIST's elements will be quoted for the shell."
376 ;; Might be redefined for smarter things and could then use RAW-ARG
377 ;; (coming from interactive P and currently ignored) to decide what to do.
378 ;; Smart would be a way to access basename or extension of file names.
379 ;; See dired-trns.el for an approach to this.
380 ;; Bug: There is no way to quote a *
381 ;; On the other hand, you can never accidentally get a * into your cmd.
382 (let ((stuff-it
383 (if (string-match "\\*" command)
384 (function (lambda (x)
385 (dired-replace-in-string "\\*" x command)))
386 (function (lambda (x) (concat command " " x))))))
387 (if on-each
388 (mapconcat stuff-it (mapcar 'dired-shell-quote file-list) ";")
389 (let ((fns (mapconcat 'dired-shell-quote
390 file-list dired-mark-separator)))
391 (if (> (length file-list) 1)
392 (setq fns (concat dired-mark-prefix fns dired-mark-postfix)))
393 (funcall stuff-it fns)))))
395 ;; This is an extra function so that it can be redefined by ange-ftp.
396 (defun dired-run-shell-command (command)
397 (shell-command command)
398 ;; Return nil for sake of nconc in dired-bunch-files.
399 nil)
401 ;; In Emacs 19 this will return program's exit status.
402 ;; This is a separate function so that ange-ftp can redefine it.
403 (defun dired-call-process (program discard &rest arguments)
404 ; "Run PROGRAM with output to current buffer unless DISCARD is t.
405 ;Remaining arguments are strings passed as command arguments to PROGRAM."
406 ;; Look for a handler for default-directory in case it is a remote file name.
407 (let ((handler
408 (find-file-name-handler (directory-file-name default-directory)
409 'dired-call-process)))
410 (if handler (apply handler 'dired-call-process
411 program discard arguments)
412 (apply 'call-process program nil (not discard) nil arguments))))
414 (defun dired-check-process (msg program &rest arguments)
415 ; "Display MSG while running PROGRAM, and check for output.
416 ;Remaining arguments are strings passed as command arguments to PROGRAM.
417 ; On error, insert output
418 ; in a log buffer and return the offending ARGUMENTS or PROGRAM.
419 ; Caller can cons up a list of failed args.
420 ;Else returns nil for success."
421 (let (err-buffer err (dir default-directory))
422 (message "%s..." msg)
423 (save-excursion
424 ;; Get a clean buffer for error output:
425 (setq err-buffer (get-buffer-create " *dired-check-process output*"))
426 (set-buffer err-buffer)
427 (erase-buffer)
428 (setq default-directory dir ; caller's default-directory
429 err (/= 0
430 (apply (function dired-call-process) program nil arguments)))
431 (if err
432 (progn
433 (dired-log (concat program " " (prin1-to-string arguments) "\n"))
434 (dired-log err-buffer)
435 (or arguments program t))
436 (kill-buffer err-buffer)
437 (message "%s...done" msg)
438 nil))))
440 ;; Commands that delete or redisplay part of the dired buffer.
442 (defun dired-kill-line (&optional arg)
443 (interactive "P")
444 (setq arg (prefix-numeric-value arg))
445 (let (buffer-read-only file)
446 (while (/= 0 arg)
447 (setq file (dired-get-filename nil t))
448 (if (not file)
449 (error "Can only kill file lines.")
450 (save-excursion (and file
451 (dired-goto-subdir file)
452 (dired-kill-subdir)))
453 (delete-region (progn (beginning-of-line) (point))
454 (progn (forward-line 1) (point)))
455 (if (> arg 0)
456 (setq arg (1- arg))
457 (setq arg (1+ arg))
458 (forward-line -1))))
459 (dired-move-to-filename)))
461 ;;;###autoload
462 (defun dired-do-kill-lines (&optional arg fmt)
463 "Kill all marked lines (not the files).
464 With a prefix argument, kill that many lines starting with the current line.
465 \(A negative argument kills lines before the current line.)
466 To kill an entire subdirectory, go to its directory header line
467 and use this command with a prefix argument (the value does not matter)."
468 ;; Returns count of killed lines. FMT="" suppresses message.
469 (interactive "P")
470 (if arg
471 (if (dired-get-subdir)
472 (dired-kill-subdir)
473 (dired-kill-line arg))
474 (save-excursion
475 (goto-char (point-min))
476 (let (buffer-read-only (count 0))
477 (if (not arg) ; kill marked lines
478 (let ((regexp (dired-marker-regexp)))
479 (while (and (not (eobp))
480 (re-search-forward regexp nil t))
481 (setq count (1+ count))
482 (delete-region (progn (beginning-of-line) (point))
483 (progn (forward-line 1) (point)))))
484 ;; else kill unmarked lines
485 (while (not (eobp))
486 (if (or (dired-between-files)
487 (not (looking-at "^ ")))
488 (forward-line 1)
489 (setq count (1+ count))
490 (delete-region (point) (save-excursion
491 (forward-line 1)
492 (point))))))
493 (or (equal "" fmt)
494 (message (or fmt "Killed %d line%s.") count (dired-plural-s count)))
495 count))))
497 ;;;###end dired-cmd.el
499 ;;; 30K
500 ;;;###begin dired-cp.el
502 (defun dired-compress ()
503 ;; Compress or uncompress the current file.
504 ;; Return nil for success, offending filename else.
505 (let* (buffer-read-only
506 (from-file (dired-get-filename))
507 (new-file (dired-compress-file from-file)))
508 (if new-file
509 (let ((start (point)))
510 ;; Remove any preexisting entry for the name NEW-FILE.
511 (condition-case nil
512 (dired-remove-entry new-file)
513 (error nil))
514 (goto-char start)
515 ;; Now replace the current line with an entry for NEW-FILE.
516 (dired-update-file-line new-file) nil)
517 (dired-log (concat "Failed to compress" from-file))
518 from-file)))
520 (defvar dired-compress-file-suffixes
521 '(("\\.gz\\'" "" "gunzip")
522 ("\\.tgz\\'" ".tar" "gunzip")
523 ("\\.Z\\'" "" "uncompress")
524 ;; For .z, try gunzip. It might be an old gzip file,
525 ;; or it might be from compact? pack? (which?) but gunzip handles both.
526 ("\\.z\\'" "" "gunzip")
527 ;; This item controls naming for compression.
528 ("\\.tar\\'" ".tgz" nil))
529 "Control changes in file name suffixes for compression and uncompression.
530 Each element specifies one transformation rule, and has the form:
531 (REGEXP NEW-SUFFIX PROGRAM)
532 The rule applies when the old file name matches REGEXP.
533 The new file name is computed by deleting the part that matches REGEXP
534 (as well as anything after that), then adding NEW-SUFFIX in its place.
535 If PROGRAM is non-nil, the rule is an uncompression rule,
536 and uncompression is done by running PROGRAM.
537 Otherwise, the rule is a compression rule, and compression is done with gzip.")
539 ;;;###autoload
540 (defun dired-compress-file (file)
541 ;; Compress or uncompress FILE.
542 ;; Return the name of the compressed or uncompressed file.
543 ;; Return nil if no change in files.
544 (let ((handler (find-file-name-handler file 'dired-compress-file))
545 suffix newname
546 (suffixes dired-compress-file-suffixes))
547 ;; See if any suffix rule matches this file name.
548 (while suffixes
549 (let (case-fold-search)
550 (if (string-match (car (car suffixes)) file)
551 (setq suffix (car suffixes) suffixes nil))
552 (setq suffixes (cdr suffixes))))
553 ;; If so, compute desired new name.
554 (if suffix
555 (setq newname (concat (substring file 0 (match-beginning 0))
556 (nth 1 suffix))))
557 (cond (handler
558 (funcall handler 'dired-compress-file file))
559 ((file-symlink-p file)
560 nil)
561 ((and suffix (nth 2 suffix))
562 ;; We found an uncompression rule.
563 (if (not (dired-check-process (concat "Uncompressing " file)
564 (nth 2 suffix) file))
565 newname))
567 ;;; We don't recognize the file as compressed, so compress it.
568 ;;; Try gzip; if we don't have that, use compress.
569 (condition-case nil
570 (if (not (dired-check-process (concat "Compressing " file)
571 "gzip" "-f" file))
572 (let ((out-name
573 (if (file-exists-p (concat file ".gz"))
574 (concat file ".gz")
575 (concat file ".z"))))
576 ;; Rename the compressed file to NEWNAME
577 ;; if it hasn't got that name already.
578 (if (and newname (not (equal newname out-name)))
579 (progn
580 (rename-file out-name newname t)
581 newname)
582 out-name)))
583 (file-error
584 (if (not (dired-check-process (concat "Compressing " file)
585 "compress" "-f" file))
586 ;; Don't use NEWNAME with `compress'.
587 (concat file ".Z"))))))))
589 (defun dired-mark-confirm (op-symbol arg)
590 ;; Request confirmation from the user that the operation described
591 ;; by OP-SYMBOL is to be performed on the marked files.
592 ;; Confirmation consists in a y-or-n question with a file list
593 ;; pop-up unless OP-SYMBOL is a member of `dired-no-confirm'.
594 ;; The files used are determined by ARG (as in dired-get-marked-files).
595 (or (eq dired-no-confirm t)
596 (memq op-symbol dired-no-confirm)
597 (let ((files (dired-get-marked-files t arg))
598 (string (if (eq op-symbol 'compress) "Compress or uncompress"
599 (capitalize (symbol-name op-symbol)))))
600 (dired-mark-pop-up nil op-symbol files (function y-or-n-p)
601 (concat string " "
602 (dired-mark-prompt arg files) "? ")))))
604 (defun dired-map-over-marks-check (fun arg op-symbol &optional show-progress)
605 ; "Map FUN over marked files (with second ARG like in dired-map-over-marks)
606 ; and display failures.
608 ; FUN takes zero args. It returns non-nil (the offending object, e.g.
609 ; the short form of the filename) for a failure and probably logs a
610 ; detailed error explanation using function `dired-log'.
612 ; OP-SYMBOL is a symbol describing the operation performed (e.g.
613 ; `compress'). It is used with `dired-mark-pop-up' to prompt the user
614 ; (e.g. with `Compress * [2 files]? ') and to display errors (e.g.
615 ; `Failed to compress 1 of 2 files - type W to see why ("foo")')
617 ; SHOW-PROGRESS if non-nil means redisplay dired after each file."
618 (if (dired-mark-confirm op-symbol arg)
619 (let* ((total-list;; all of FUN's return values
620 (dired-map-over-marks (funcall fun) arg show-progress))
621 (total (length total-list))
622 (failures (delq nil total-list))
623 (count (length failures))
624 (string (if (eq op-symbol 'compress) "Compress or uncompress"
625 (capitalize (symbol-name op-symbol)))))
626 (if (not failures)
627 (message "%s: %d file%s."
628 string total (dired-plural-s total))
629 ;; end this bunch of errors:
630 (dired-log-summary
631 (format "Failed to %s %d of %d file%s"
632 (downcase string) count total (dired-plural-s total))
633 failures)))))
635 (defvar dired-query-alist
636 '((?\y . y) (?\040 . y) ; `y' or SPC means accept once
637 (?n . n) (?\177 . n) ; `n' or DEL skips once
638 (?! . yes) ; `!' accepts rest
639 (?q. no) (?\e . no) ; `q' or ESC skips rest
640 ;; None of these keys quit - use C-g for that.
643 (defun dired-query (qs-var qs-prompt &rest qs-args)
644 ;; Query user and return nil or t.
645 ;; Store answer in symbol VAR (which must initially be bound to nil).
646 ;; Format PROMPT with ARGS.
647 ;; Binding variable help-form will help the user who types the help key.
648 (let* ((char (symbol-value qs-var))
649 (action (cdr (assoc char dired-query-alist))))
650 (cond ((eq 'yes action)
651 t) ; accept, and don't ask again
652 ((eq 'no action)
653 nil) ; skip, and don't ask again
654 (t;; no lasting effects from last time we asked - ask now
655 (let ((qprompt (concat qs-prompt
656 (if help-form
657 (format " [Type yn!q or %s] "
658 (key-description
659 (char-to-string help-char)))
660 " [Type y, n, q or !] ")))
661 result elt)
662 ;; Actually it looks nicer without cursor-in-echo-area - you can
663 ;; look at the dired buffer instead of at the prompt to decide.
664 (apply 'message qprompt qs-args)
665 (setq char (set qs-var (read-char)))
666 (while (not (setq elt (assoc char dired-query-alist)))
667 (message "Invalid char - type %c for help." help-char)
668 (ding)
669 (sit-for 1)
670 (apply 'message qprompt qs-args)
671 (setq char (set qs-var (read-char))))
672 (memq (cdr elt) '(t y yes)))))))
674 ;;;###autoload
675 (defun dired-do-compress (&optional arg)
676 "Compress or uncompress marked (or next ARG) files."
677 (interactive "P")
678 (dired-map-over-marks-check (function dired-compress) arg 'compress t))
680 ;; Commands for Emacs Lisp files - load and byte compile
682 (defun dired-byte-compile ()
683 ;; Return nil for success, offending file name else.
684 (let* ((filename (dired-get-filename))
685 elc-file buffer-read-only failure)
686 (condition-case err
687 (save-excursion (byte-compile-file filename))
688 (error
689 (setq failure err)))
690 (setq elc-file (byte-compile-dest-file filename))
691 (or (file-exists-p elc-file)
692 (setq failure t))
693 (if failure
694 (progn
695 (dired-log "Byte compile error for %s:\n%s\n" filename failure)
696 (dired-make-relative filename))
697 (dired-remove-file elc-file)
698 (forward-line) ; insert .elc after its .el file
699 (dired-add-file elc-file)
700 nil)))
702 ;;;###autoload
703 (defun dired-do-byte-compile (&optional arg)
704 "Byte compile marked (or next ARG) Emacs Lisp files."
705 (interactive "P")
706 (dired-map-over-marks-check (function dired-byte-compile) arg 'byte-compile t))
708 (defun dired-load ()
709 ;; Return nil for success, offending file name else.
710 (let ((file (dired-get-filename)) failure)
711 (condition-case err
712 (load file nil nil t)
713 (error (setq failure err)))
714 (if (not failure)
716 (dired-log "Load error for %s:\n%s\n" file failure)
717 (dired-make-relative file))))
719 ;;;###autoload
720 (defun dired-do-load (&optional arg)
721 "Load the marked (or next ARG) Emacs Lisp files."
722 (interactive "P")
723 (dired-map-over-marks-check (function dired-load) arg 'load t))
725 ;;;###autoload
726 (defun dired-do-redisplay (&optional arg test-for-subdir)
727 "Redisplay all marked (or next ARG) files.
728 If on a subdir line, redisplay that subdirectory. In that case,
729 a prefix arg lets you edit the `ls' switches used for the new listing."
730 ;; Moves point if the next ARG files are redisplayed.
731 (interactive "P\np")
732 (if (and test-for-subdir (dired-get-subdir))
733 (dired-insert-subdir
734 (dired-get-subdir)
735 (if arg (read-string "Switches for listing: " dired-actual-switches)))
736 (message "Redisplaying...")
737 ;; message much faster than making dired-map-over-marks show progress
738 (dired-uncache
739 (if (consp dired-directory) (car dired-directory) dired-directory))
740 (dired-map-over-marks (let ((fname (dired-get-filename)))
741 (message "Redisplaying... %s" fname)
742 (dired-update-file-line fname))
743 arg)
744 (dired-move-to-filename)
745 (message "Redisplaying...done")))
747 (defun dired-update-file-line (file)
748 ;; Delete the current line, and insert an entry for FILE.
749 ;; If FILE is nil, then just delete the current line.
750 ;; Keeps any marks that may be present in column one (doing this
751 ;; here is faster than with dired-add-entry's optional arg).
752 ;; Does not update other dired buffers. Use dired-relist-entry for that.
753 (beginning-of-line)
754 (let ((char (following-char)) (opoint (point))
755 (buffer-read-only))
756 (delete-region (point) (progn (forward-line 1) (point)))
757 (if file
758 (progn
759 (dired-add-entry file)
760 ;; Replace space by old marker without moving point.
761 ;; Faster than goto+insdel inside a save-excursion?
762 (subst-char-in-region opoint (1+ opoint) ?\040 char))))
763 (dired-move-to-filename))
765 (defun dired-fun-in-all-buffers (directory file fun &rest args)
766 ;; In all buffers dired'ing DIRECTORY, run FUN with ARGS.
767 ;; If the buffer has a wildcard pattern, check that it matches FILE.
768 ;; (FILE does not include a directory component.)
769 ;; FILE may be nil, in which case ignore it.
770 ;; Return list of buffers where FUN succeeded (i.e., returned non-nil).
771 (let ((buf-list (dired-buffers-for-dir (expand-file-name directory)
772 file))
773 (obuf (current-buffer))
774 buf success-list)
775 (while buf-list
776 (setq buf (car buf-list)
777 buf-list (cdr buf-list))
778 (unwind-protect
779 (progn
780 (set-buffer buf)
781 (if (apply fun args)
782 (setq success-list (cons (buffer-name buf) success-list))))
783 (set-buffer obuf)))
784 success-list))
786 ;;;###autoload
787 (defun dired-add-file (filename &optional marker-char)
788 (dired-fun-in-all-buffers
789 (file-name-directory filename) (file-name-nondirectory filename)
790 (function dired-add-entry) filename marker-char))
792 (defun dired-add-entry (filename &optional marker-char)
793 ;; Add a new entry for FILENAME, optionally marking it
794 ;; with MARKER-CHAR (a character, else dired-marker-char is used).
795 ;; Note that this adds the entry `out of order' if files sorted by
796 ;; time, etc.
797 ;; At least this version inserts in the right subdirectory (if present).
798 ;; And it skips "." or ".." (see `dired-trivial-filenames').
799 ;; Hidden subdirs are exposed if a file is added there.
800 (setq filename (directory-file-name filename))
801 ;; Entry is always for files, even if they happen to also be directories
802 (let ((opoint (point))
803 (cur-dir (dired-current-directory))
804 (orig-file-name filename)
805 (directory (file-name-directory filename))
806 reason)
807 (setq filename (file-name-nondirectory filename)
808 reason
809 (catch 'not-found
810 (if (string= directory cur-dir)
811 (progn
812 (skip-chars-forward "^\r\n")
813 (if (eq (following-char) ?\r)
814 (dired-unhide-subdir))
815 ;; We are already where we should be, except when
816 ;; point is before the subdir line or its total line.
817 (let ((p (dired-after-subdir-garbage cur-dir)))
818 (if (< (point) p)
819 (goto-char p))))
820 ;; else try to find correct place to insert
821 (if (dired-goto-subdir directory)
822 (progn;; unhide if necessary
823 (if (looking-at "\r");; point is at end of subdir line
824 (dired-unhide-subdir))
825 ;; found - skip subdir and `total' line
826 ;; and uninteresting files like . and ..
827 ;; This better not moves into the next subdir!
828 (dired-goto-next-nontrivial-file))
829 ;; not found
830 (throw 'not-found "Subdir not found")))
831 (let (buffer-read-only opoint)
832 (beginning-of-line)
833 (setq opoint (point))
834 (dired-add-entry-do-indentation marker-char)
835 ;; don't expand `.'. Show just the file name within directory.
836 (let ((default-directory directory))
837 (insert-directory filename
838 (concat dired-actual-switches "d")))
839 ;; Compensate for a bug in ange-ftp.
840 ;; It inserts the file's absolute name, rather than
841 ;; the relative one. That may be hard to fix since it
842 ;; is probably controlled by something in ftp.
843 (goto-char opoint)
844 (let ((inserted-name (dired-get-filename 'no-dir)))
845 (if (file-name-directory inserted-name)
846 (progn
847 (end-of-line)
848 (delete-char (- (length inserted-name)))
849 (insert filename)
850 (forward-char 1))
851 (forward-line 1)))
852 ;; Give each line a text property recording info about it.
853 (dired-insert-set-properties opoint (point))
854 (forward-line -1)
855 (if dired-after-readin-hook;; the subdir-alist is not affected...
856 (save-excursion;; ...so we can run it right now:
857 (save-restriction
858 (beginning-of-line)
859 (narrow-to-region (point) (save-excursion
860 (forward-line 1) (point)))
861 (run-hooks 'dired-after-readin-hook))))
862 (dired-move-to-filename))
863 ;; return nil if all went well
864 nil))
865 (if reason ; don't move away on failure
866 (goto-char opoint))
867 (not reason))) ; return t on success, nil else
869 ;; This is a separate function for the sake of nested dired format.
870 (defun dired-add-entry-do-indentation (marker-char)
871 ;; two spaces or a marker plus a space:
872 (insert (if marker-char
873 (if (integerp marker-char) marker-char dired-marker-char)
874 ?\040)
875 ?\040))
877 (defun dired-after-subdir-garbage (dir)
878 ;; Return pos of first file line of DIR, skipping header and total
879 ;; or wildcard lines.
880 ;; Important: never moves into the next subdir.
881 ;; DIR is assumed to be unhidden.
882 ;; Will probably be redefined for VMS etc.
883 (save-excursion
884 (or (dired-goto-subdir dir) (error "This cannot happen"))
885 (forward-line 1)
886 (while (and (not (eolp)) ; don't cross subdir boundary
887 (not (dired-move-to-filename)))
888 (forward-line 1))
889 (point)))
891 ;;;###autoload
892 (defun dired-remove-file (file)
893 (dired-fun-in-all-buffers
894 (file-name-directory file) (file-name-nondirectory file)
895 (function dired-remove-entry) file))
897 (defun dired-remove-entry (file)
898 (save-excursion
899 (and (dired-goto-file file)
900 (let (buffer-read-only)
901 (delete-region (progn (beginning-of-line) (point))
902 (save-excursion (forward-line 1) (point)))))))
904 ;;;###autoload
905 (defun dired-relist-file (file)
906 (dired-fun-in-all-buffers (file-name-directory file)
907 (file-name-nondirectory file)
908 (function dired-relist-entry) file))
910 (defun dired-relist-entry (file)
911 ;; Relist the line for FILE, or just add it if it did not exist.
912 ;; FILE must be an absolute pathname.
913 (let (buffer-read-only marker)
914 ;; If cursor is already on FILE's line delete-region will cause
915 ;; save-excursion to fail because of floating makers,
916 ;; moving point to beginning of line. Sigh.
917 (save-excursion
918 (and (dired-goto-file file)
919 (delete-region (progn (beginning-of-line)
920 (setq marker (following-char))
921 (point))
922 (save-excursion (forward-line 1) (point))))
923 (setq file (directory-file-name file))
924 (dired-add-entry file (if (eq ?\040 marker) nil marker)))))
926 ;;; Copy, move/rename, making hard and symbolic links
928 (defvar dired-backup-overwrite nil
929 "*Non-nil if Dired should ask about making backups before overwriting files.
930 Special value `always' suppresses confirmation.")
932 (defvar dired-overwrite-confirmed)
934 (defun dired-handle-overwrite (to)
935 ;; Save old version of a to be overwritten file TO.
936 ;; `dired-overwrite-confirmed' and `overwrite-backup-query' are fluid vars
937 ;; from dired-create-files.
938 (let (backup)
939 (if (and dired-backup-overwrite
940 dired-overwrite-confirmed
941 (setq backup (car (find-backup-file-name to)))
942 (or (eq 'always dired-backup-overwrite)
943 (dired-query 'overwrite-backup-query
944 (format "Make backup for existing file `%s'? " to))))
945 (progn
946 (rename-file to backup 0) ; confirm overwrite of old backup
947 (dired-relist-entry backup)))))
949 ;;;###autoload
950 (defun dired-copy-file (from to ok-flag)
951 (dired-handle-overwrite to)
952 (condition-case ()
953 (copy-file from to ok-flag dired-copy-preserve-time)
954 (file-date-error (message "Can't set date")
955 (sit-for 1))))
957 ;;;###autoload
958 (defun dired-rename-file (from to ok-flag)
959 (dired-handle-overwrite to)
960 (rename-file from to ok-flag) ; error is caught in -create-files
961 ;; Silently rename the visited file of any buffer visiting this file.
962 (and (get-file-buffer from)
963 (with-current-buffer (get-file-buffer from)
964 (set-visited-file-name to nil t)))
965 (dired-remove-file from)
966 ;; See if it's an inserted subdir, and rename that, too.
967 (dired-rename-subdir from to))
969 (defun dired-rename-subdir (from-dir to-dir)
970 (setq from-dir (file-name-as-directory from-dir)
971 to-dir (file-name-as-directory to-dir))
972 (dired-fun-in-all-buffers from-dir nil
973 (function dired-rename-subdir-1) from-dir to-dir)
974 ;; Update visited file name of all affected buffers
975 (let ((expanded-from-dir (expand-file-name from-dir))
976 (blist (buffer-list)))
977 (while blist
978 (save-excursion
979 (set-buffer (car blist))
980 (if (and buffer-file-name
981 (dired-in-this-tree buffer-file-name expanded-from-dir))
982 (let ((modflag (buffer-modified-p))
983 (to-file (dired-replace-in-string
984 (concat "^" (regexp-quote from-dir))
985 to-dir
986 buffer-file-name)))
987 (set-visited-file-name to-file)
988 (set-buffer-modified-p modflag))))
989 (setq blist (cdr blist)))))
991 (defun dired-rename-subdir-1 (dir to)
992 ;; Rename DIR to TO in headerlines and dired-subdir-alist, if DIR or
993 ;; one of its subdirectories is expanded in this buffer.
994 (let ((expanded-dir (expand-file-name dir))
995 (alist dired-subdir-alist)
996 (elt nil))
997 (while alist
998 (setq elt (car alist)
999 alist (cdr alist))
1000 (if (dired-in-this-tree (car elt) expanded-dir)
1001 ;; ELT's subdir is affected by the rename
1002 (dired-rename-subdir-2 elt dir to)))
1003 (if (equal dir default-directory)
1004 ;; if top level directory was renamed, lots of things have to be
1005 ;; updated:
1006 (progn
1007 (dired-unadvertise dir) ; we no longer dired DIR...
1008 (setq default-directory to
1009 dired-directory (expand-file-name;; this is correct
1010 ;; with and without wildcards
1011 (file-name-nondirectory dired-directory)
1012 to))
1013 (let ((new-name (file-name-nondirectory
1014 (directory-file-name dired-directory))))
1015 ;; try to rename buffer, but just leave old name if new
1016 ;; name would already exist (don't try appending "<%d>")
1017 (or (get-buffer new-name)
1018 (rename-buffer new-name)))
1019 ;; ... we dired TO now:
1020 (dired-advertise)))))
1022 (defun dired-rename-subdir-2 (elt dir to)
1023 ;; Update the headerline and dired-subdir-alist element of directory
1024 ;; described by alist-element ELT to reflect the moving of DIR to TO.
1025 ;; Thus, ELT describes either DIR itself or a subdir of DIR.
1026 (save-excursion
1027 (let ((regexp (regexp-quote (directory-file-name dir)))
1028 (newtext (directory-file-name to))
1029 buffer-read-only)
1030 (goto-char (dired-get-subdir-min elt))
1031 ;; Update subdir headerline in buffer
1032 (if (not (looking-at dired-subdir-regexp))
1033 (error "%s not found where expected - dired-subdir-alist broken?"
1034 dir)
1035 (goto-char (match-beginning 1))
1036 (if (re-search-forward regexp (match-end 1) t)
1037 (replace-match newtext t t)
1038 (error "Expected to find `%s' in headerline of %s" dir (car elt))))
1039 ;; Update buffer-local dired-subdir-alist
1040 (setcar elt
1041 (dired-normalize-subdir
1042 (dired-replace-in-string regexp newtext (car elt)))))))
1044 ;; The basic function for half a dozen variations on cp/mv/ln/ln -s.
1045 (defun dired-create-files (file-creator operation fn-list name-constructor
1046 &optional marker-char)
1048 ;; Create a new file for each from a list of existing files. The user
1049 ;; is queried, dired buffers are updated, and at the end a success or
1050 ;; failure message is displayed
1052 ;; FILE-CREATOR must accept three args: oldfile newfile ok-if-already-exists
1054 ;; It is called for each file and must create newfile, the entry of
1055 ;; which will be added. The user will be queried if the file already
1056 ;; exists. If oldfile is removed by FILE-CREATOR (i.e, it is a
1057 ;; rename), it is FILE-CREATOR's responsibility to update dired
1058 ;; buffers. FILE-CREATOR must abort by signaling a file-error if it
1059 ;; could not create newfile. The error is caught and logged.
1061 ;; OPERATION (a capitalized string, e.g. `Copy') describes the
1062 ;; operation performed. It is used for error logging.
1064 ;; FN-LIST is the list of files to copy (full absolute pathnames).
1066 ;; NAME-CONSTRUCTOR returns a newfile for every oldfile, or nil to
1067 ;; skip. If it skips files for other reasons than a direct user
1068 ;; query, it is supposed to tell why (using dired-log).
1070 ;; Optional MARKER-CHAR is a character with which to mark every
1071 ;; newfile's entry, or t to use the current marker character if the
1072 ;; oldfile was marked.
1074 (let (failures skipped (success-count 0) (total (length fn-list)))
1075 (let (to overwrite-query
1076 overwrite-backup-query) ; for dired-handle-overwrite
1077 (mapcar
1078 (function
1079 (lambda (from)
1080 (setq to (funcall name-constructor from))
1081 (if (equal to from)
1082 (progn
1083 (setq to nil)
1084 (dired-log "Cannot %s to same file: %s\n"
1085 (downcase operation) from)))
1086 (if (not to)
1087 (setq skipped (cons (dired-make-relative from) skipped))
1088 (let* ((overwrite (file-exists-p to))
1089 (dired-overwrite-confirmed ; for dired-handle-overwrite
1090 (and overwrite
1091 (let ((help-form '(format "\
1092 Type SPC or `y' to overwrite file `%s',
1093 DEL or `n' to skip to next,
1094 ESC or `q' to not overwrite any of the remaining files,
1095 `!' to overwrite all remaining files with no more questions." to)))
1096 (dired-query 'overwrite-query
1097 "Overwrite `%s'?" to))))
1098 ;; must determine if FROM is marked before file-creator
1099 ;; gets a chance to delete it (in case of a move).
1100 (actual-marker-char
1101 (cond ((integerp marker-char) marker-char)
1102 (marker-char (dired-file-marker from)) ; slow
1103 (t nil))))
1104 (condition-case err
1105 (progn
1106 (funcall file-creator from to dired-overwrite-confirmed)
1107 (if overwrite
1108 ;; If we get here, file-creator hasn't been aborted
1109 ;; and the old entry (if any) has to be deleted
1110 ;; before adding the new entry.
1111 (dired-remove-file to))
1112 (setq success-count (1+ success-count))
1113 (message "%s: %d of %d" operation success-count total)
1114 (dired-add-file to actual-marker-char))
1115 (file-error ; FILE-CREATOR aborted
1116 (progn
1117 (setq failures (cons (dired-make-relative from) failures))
1118 (dired-log "%s `%s' to `%s' failed:\n%s\n"
1119 operation from to err))))))))
1120 fn-list))
1121 (cond
1122 (failures
1123 (dired-log-summary
1124 (format "%s failed for %d of %d file%s"
1125 operation (length failures) total
1126 (dired-plural-s total))
1127 failures))
1128 (skipped
1129 (dired-log-summary
1130 (format "%s: %d of %d file%s skipped"
1131 operation (length skipped) total
1132 (dired-plural-s total))
1133 skipped))
1135 (message "%s: %s file%s"
1136 operation success-count (dired-plural-s success-count)))))
1137 (dired-move-to-filename))
1139 (defun dired-do-create-files (op-symbol file-creator operation arg
1140 &optional marker-char op1
1141 how-to)
1142 ;; Create a new file for each marked file.
1143 ;; Prompts user for target, which is a directory in which to create
1144 ;; the new files. Target may be a plain file if only one marked
1145 ;; file exists.
1146 ;; OP-SYMBOL is the symbol for the operation. Function `dired-mark-pop-up'
1147 ;; will determine whether pop-ups are appropriate for this OP-SYMBOL.
1148 ;; FILE-CREATOR and OPERATION as in dired-create-files.
1149 ;; ARG as in dired-get-marked-files.
1150 ;; Optional arg OP1 is an alternate form for OPERATION if there is
1151 ;; only one file.
1152 ;; Optional arg MARKER-CHAR as in dired-create-files.
1153 ;; Optional arg HOW-TO determines how to treat target:
1154 ;; If HOW-TO is not given (or nil), and target is a directory, the
1155 ;; file(s) are created inside the target directory. If target
1156 ;; is not a directory, there must be exactly one marked file,
1157 ;; else error.
1158 ;; If HOW-TO is t, then target is not modified. There must be
1159 ;; exactly one marked file, else error.
1160 ;; Else HOW-TO is assumed to be a function of one argument, target,
1161 ;; that looks at target and returns a value for the into-dir
1162 ;; variable. The function dired-into-dir-with-symlinks is provided
1163 ;; for the case (common when creating symlinks) that symbolic
1164 ;; links to directories are not to be considered as directories
1165 ;; (as file-directory-p would if HOW-TO had been nil).
1166 (or op1 (setq op1 operation))
1167 (let* ((fn-list (dired-get-marked-files nil arg))
1168 (fn-count (length fn-list))
1169 (target (expand-file-name
1170 (dired-mark-read-file-name
1171 (concat (if (= 1 fn-count) op1 operation) " %s to: ")
1172 (dired-dwim-target-directory)
1173 op-symbol arg (mapcar (function dired-make-relative) fn-list))))
1174 (into-dir (cond ((null how-to) (file-directory-p target))
1175 ((eq how-to t) nil)
1176 (t (funcall how-to target)))))
1177 (if (and (> fn-count 1)
1178 (not into-dir))
1179 (error "Marked %s: target must be a directory: %s" operation target))
1180 ;; rename-file bombs when moving directories unless we do this:
1181 (or into-dir (setq target (directory-file-name target)))
1182 (dired-create-files
1183 file-creator operation fn-list
1184 (if into-dir ; target is a directory
1185 ;; This function uses fluid vars into-dir and target when called
1186 ;; inside dired-create-files:
1187 (function (lambda (from)
1188 (expand-file-name (file-name-nondirectory from) target)))
1189 (function (lambda (from) target)))
1190 marker-char)))
1192 ;; Read arguments for a marked-files command that wants a file name,
1193 ;; perhaps popping up the list of marked files.
1194 ;; ARG is the prefix arg and indicates whether the files came from
1195 ;; marks (ARG=nil) or a repeat factor (integerp ARG).
1196 ;; If the current file was used, the list has but one element and ARG
1197 ;; does not matter. (It is non-nil, non-integer in that case, namely '(4)).
1199 (defun dired-mark-read-file-name (prompt dir op-symbol arg files)
1200 (dired-mark-pop-up
1201 nil op-symbol files
1202 (function read-file-name)
1203 (format prompt (dired-mark-prompt arg files)) dir))
1205 (defun dired-dwim-target-directory ()
1206 ;; Try to guess which target directory the user may want.
1207 ;; If there is a dired buffer displayed in the next window, use
1208 ;; its current subdir, else use current subdir of this dired buffer.
1209 (let ((this-dir (and (eq major-mode 'dired-mode)
1210 (dired-current-directory))))
1211 ;; non-dired buffer may want to profit from this function, e.g. vm-uudecode
1212 (if dired-dwim-target
1213 (let* ((other-buf (window-buffer (next-window)))
1214 (other-dir (save-excursion
1215 (set-buffer other-buf)
1216 (and (eq major-mode 'dired-mode)
1217 (dired-current-directory)))))
1218 (or other-dir this-dir))
1219 this-dir)))
1221 ;;;###autoload
1222 (defun dired-create-directory (directory)
1223 "Create a directory called DIRECTORY."
1224 (interactive
1225 (list (read-file-name "Create directory: " (dired-current-directory))))
1226 (let ((expanded (directory-file-name (expand-file-name directory))))
1227 (make-directory expanded)
1228 (dired-add-file expanded)
1229 (dired-move-to-filename)))
1231 (defun dired-into-dir-with-symlinks (target)
1232 (and (file-directory-p target)
1233 (not (file-symlink-p target))))
1234 ;; This may not always be what you want, especially if target is your
1235 ;; home directory and it happens to be a symbolic link, as is often the
1236 ;; case with NFS and automounters. Or if you want to make symlinks
1237 ;; into directories that themselves are only symlinks, also quite
1238 ;; common.
1240 ;; So we don't use this function as value for HOW-TO in
1241 ;; dired-do-symlink, which has the minor disadvantage of
1242 ;; making links *into* a symlinked-dir, when you really wanted to
1243 ;; *overwrite* that symlink. In that (rare, I guess) case, you'll
1244 ;; just have to remove that symlink by hand before making your marked
1245 ;; symlinks.
1247 ;;;###autoload
1248 (defun dired-do-copy (&optional arg)
1249 "Copy all marked (or next ARG) files, or copy the current file.
1250 This normally preserves the last-modified date when copying.
1251 When operating on just the current file, you specify the new name.
1252 When operating on multiple or marked files, you specify a directory,
1253 and new copies of these files are made in that directory
1254 with the same names that the files currently have."
1255 (interactive "P")
1256 (dired-do-create-files 'copy (function dired-copy-file)
1257 (if dired-copy-preserve-time "Copy [-p]" "Copy")
1258 arg dired-keep-marker-copy))
1260 ;;;###autoload
1261 (defun dired-do-symlink (&optional arg)
1262 "Make symbolic links to current file or all marked (or next ARG) files.
1263 When operating on just the current file, you specify the new name.
1264 When operating on multiple or marked files, you specify a directory
1265 and new symbolic links are made in that directory
1266 with the same names that the files currently have."
1267 (interactive "P")
1268 (dired-do-create-files 'symlink (function make-symbolic-link)
1269 "Symlink" arg dired-keep-marker-symlink))
1271 ;;;###autoload
1272 (defun dired-do-hardlink (&optional arg)
1273 "Add names (hard links) current file or all marked (or next ARG) files.
1274 When operating on just the current file, you specify the new name.
1275 When operating on multiple or marked files, you specify a directory
1276 and new hard links are made in that directory
1277 with the same names that the files currently have."
1278 (interactive "P")
1279 (dired-do-create-files 'hardlink (function add-name-to-file)
1280 "Hardlink" arg dired-keep-marker-hardlink))
1282 ;;;###autoload
1283 (defun dired-do-rename (&optional arg)
1284 "Rename current file or all marked (or next ARG) files.
1285 When renaming just the current file, you specify the new name.
1286 When renaming multiple or marked files, you specify a directory."
1287 (interactive "P")
1288 (dired-do-create-files 'move (function dired-rename-file)
1289 "Move" arg dired-keep-marker-rename "Rename"))
1290 ;;;###end dired-cp.el
1292 ;;; 5K
1293 ;;;###begin dired-re.el
1294 (defun dired-do-create-files-regexp
1295 (file-creator operation arg regexp newname &optional whole-path marker-char)
1296 ;; Create a new file for each marked file using regexps.
1297 ;; FILE-CREATOR and OPERATION as in dired-create-files.
1298 ;; ARG as in dired-get-marked-files.
1299 ;; Matches each marked file against REGEXP and constructs the new
1300 ;; filename from NEWNAME (like in function replace-match).
1301 ;; Optional arg WHOLE-PATH means match/replace the whole pathname
1302 ;; instead of only the non-directory part of the file.
1303 ;; Optional arg MARKER-CHAR as in dired-create-files.
1304 (let* ((fn-list (dired-get-marked-files nil arg))
1305 (fn-count (length fn-list))
1306 (operation-prompt (concat operation " `%s' to `%s'?"))
1307 (rename-regexp-help-form (format "\
1308 Type SPC or `y' to %s one match, DEL or `n' to skip to next,
1309 `!' to %s all remaining matches with no more questions."
1310 (downcase operation)
1311 (downcase operation)))
1312 (regexp-name-constructor
1313 ;; Function to construct new filename using REGEXP and NEWNAME:
1314 (if whole-path ; easy (but rare) case
1315 (function
1316 (lambda (from)
1317 (let ((to (dired-string-replace-match regexp from newname))
1318 ;; must bind help-form directly around call to
1319 ;; dired-query
1320 (help-form rename-regexp-help-form))
1321 (if to
1322 (and (dired-query 'rename-regexp-query
1323 operation-prompt
1324 from
1327 (dired-log "%s: %s did not match regexp %s\n"
1328 operation from regexp)))))
1329 ;; not whole-path, replace non-directory part only
1330 (function
1331 (lambda (from)
1332 (let* ((new (dired-string-replace-match
1333 regexp (file-name-nondirectory from) newname))
1334 (to (and new ; nil means there was no match
1335 (expand-file-name new
1336 (file-name-directory from))))
1337 (help-form rename-regexp-help-form))
1338 (if to
1339 (and (dired-query 'rename-regexp-query
1340 operation-prompt
1341 (dired-make-relative from)
1342 (dired-make-relative to))
1344 (dired-log "%s: %s did not match regexp %s\n"
1345 operation (file-name-nondirectory from) regexp)))))))
1346 rename-regexp-query)
1347 (dired-create-files
1348 file-creator operation fn-list regexp-name-constructor marker-char)))
1350 (defun dired-mark-read-regexp (operation)
1351 ;; Prompt user about performing OPERATION.
1352 ;; Read and return list of: regexp newname arg whole-path.
1353 (let* ((whole-path
1354 (equal 0 (prefix-numeric-value current-prefix-arg)))
1355 (arg
1356 (if whole-path nil current-prefix-arg))
1357 (regexp
1358 (dired-read-regexp
1359 (concat (if whole-path "Path " "") operation " from (regexp): ")))
1360 (newname
1361 (read-string
1362 (concat (if whole-path "Path " "") operation " " regexp " to: "))))
1363 (list regexp newname arg whole-path)))
1365 ;;;###autoload
1366 (defun dired-do-rename-regexp (regexp newname &optional arg whole-path)
1367 "Rename marked files containing REGEXP to NEWNAME.
1368 As each match is found, the user must type a character saying
1369 what to do with it. For directions, type \\[help-command] at that time.
1370 NEWNAME may contain \\=\\<n> or \\& as in `query-replace-regexp'.
1371 REGEXP defaults to the last regexp used.
1372 With a zero prefix arg, renaming by regexp affects the complete
1373 pathname - usually only the non-directory part of file names is used
1374 and changed."
1375 (interactive (dired-mark-read-regexp "Rename"))
1376 (dired-do-create-files-regexp
1377 (function dired-rename-file)
1378 "Rename" arg regexp newname whole-path dired-keep-marker-rename))
1380 ;;;###autoload
1381 (defun dired-do-copy-regexp (regexp newname &optional arg whole-path)
1382 "Copy all marked files containing REGEXP to NEWNAME.
1383 See function `dired-rename-regexp' for more info."
1384 (interactive (dired-mark-read-regexp "Copy"))
1385 (dired-do-create-files-regexp
1386 (function dired-copy-file)
1387 (if dired-copy-preserve-time "Copy [-p]" "Copy")
1388 arg regexp newname whole-path dired-keep-marker-copy))
1390 ;;;###autoload
1391 (defun dired-do-hardlink-regexp (regexp newname &optional arg whole-path)
1392 "Hardlink all marked files containing REGEXP to NEWNAME.
1393 See function `dired-rename-regexp' for more info."
1394 (interactive (dired-mark-read-regexp "HardLink"))
1395 (dired-do-create-files-regexp
1396 (function add-name-to-file)
1397 "HardLink" arg regexp newname whole-path dired-keep-marker-hardlink))
1399 ;;;###autoload
1400 (defun dired-do-symlink-regexp (regexp newname &optional arg whole-path)
1401 "Symlink all marked files containing REGEXP to NEWNAME.
1402 See function `dired-rename-regexp' for more info."
1403 (interactive (dired-mark-read-regexp "SymLink"))
1404 (dired-do-create-files-regexp
1405 (function make-symbolic-link)
1406 "SymLink" arg regexp newname whole-path dired-keep-marker-symlink))
1408 (defun dired-create-files-non-directory
1409 (file-creator basename-constructor operation arg)
1410 ;; Perform FILE-CREATOR on the non-directory part of marked files
1411 ;; using function BASENAME-CONSTRUCTOR, with query for each file.
1412 ;; OPERATION like in dired-create-files, ARG as in dired-get-marked-files.
1413 (let (rename-non-directory-query)
1414 (dired-create-files
1415 file-creator
1416 operation
1417 (dired-get-marked-files nil arg)
1418 (function
1419 (lambda (from)
1420 (let ((to (concat (file-name-directory from)
1421 (funcall basename-constructor
1422 (file-name-nondirectory from)))))
1423 (and (let ((help-form (format "\
1424 Type SPC or `y' to %s one file, DEL or `n' to skip to next,
1425 `!' to %s all remaining matches with no more questions."
1426 (downcase operation)
1427 (downcase operation))))
1428 (dired-query 'rename-non-directory-query
1429 (concat operation " `%s' to `%s'")
1430 (dired-make-relative from)
1431 (dired-make-relative to)))
1432 to))))
1433 dired-keep-marker-rename)))
1435 (defun dired-rename-non-directory (basename-constructor operation arg)
1436 (dired-create-files-non-directory
1437 (function dired-rename-file)
1438 basename-constructor operation arg))
1440 ;;;###autoload
1441 (defun dired-upcase (&optional arg)
1442 "Rename all marked (or next ARG) files to upper case."
1443 (interactive "P")
1444 (dired-rename-non-directory (function upcase) "Rename upcase" arg))
1446 ;;;###autoload
1447 (defun dired-downcase (&optional arg)
1448 "Rename all marked (or next ARG) files to lower case."
1449 (interactive "P")
1450 (dired-rename-non-directory (function downcase) "Rename downcase" arg))
1452 ;;;###end dired-re.el
1454 ;;; 13K
1455 ;;;###begin dired-ins.el
1457 ;;;###autoload
1458 (defun dired-maybe-insert-subdir (dirname &optional
1459 switches no-error-if-not-dir-p)
1460 "Insert this subdirectory into the same dired buffer.
1461 If it is already present, just move to it (type \\[dired-do-redisplay] to refresh),
1462 else inserts it at its natural place (as `ls -lR' would have done).
1463 With a prefix arg, you may edit the ls switches used for this listing.
1464 You can add `R' to the switches to expand the whole tree starting at
1465 this subdirectory.
1466 This function takes some pains to conform to `ls -lR' output."
1467 (interactive
1468 (list (dired-get-filename)
1469 (if current-prefix-arg
1470 (read-string "Switches for listing: " dired-actual-switches))))
1471 (let ((opoint (point)))
1472 ;; We don't need a marker for opoint as the subdir is always
1473 ;; inserted *after* opoint.
1474 (setq dirname (file-name-as-directory dirname))
1475 (or (and (not switches)
1476 (dired-goto-subdir dirname))
1477 (dired-insert-subdir dirname switches no-error-if-not-dir-p))
1478 ;; Push mark so that it's easy to find back. Do this after the
1479 ;; insert message so that the user sees the `Mark set' message.
1480 (push-mark opoint)))
1482 (defun dired-insert-subdir (dirname &optional switches no-error-if-not-dir-p)
1483 "Insert this subdirectory into the same dired buffer.
1484 If it is already present, overwrites previous entry,
1485 else inserts it at its natural place (as `ls -lR' would have done).
1486 With a prefix arg, you may edit the `ls' switches used for this listing.
1487 You can add `R' to the switches to expand the whole tree starting at
1488 this subdirectory.
1489 This function takes some pains to conform to `ls -lR' output."
1490 ;; NO-ERROR-IF-NOT-DIR-P needed for special filesystems like
1491 ;; Prospero where dired-ls does the right thing, but
1492 ;; file-directory-p has not been redefined.
1493 (interactive
1494 (list (dired-get-filename)
1495 (if current-prefix-arg
1496 (read-string "Switches for listing: " dired-actual-switches))))
1497 (setq dirname (file-name-as-directory (expand-file-name dirname)))
1498 (dired-insert-subdir-validate dirname switches)
1499 (or no-error-if-not-dir-p
1500 (file-directory-p dirname)
1501 (error "Attempt to insert a non-directory: %s" dirname))
1502 (let ((elt (assoc dirname dired-subdir-alist))
1503 switches-have-R mark-alist case-fold-search buffer-read-only)
1504 ;; case-fold-search is nil now, so we can test for capital `R':
1505 (if (setq switches-have-R (and switches (string-match "R" switches)))
1506 ;; avoid duplicated subdirs
1507 (setq mark-alist (dired-kill-tree dirname t)))
1508 (if elt
1509 ;; If subdir is already present, remove it and remember its marks
1510 (setq mark-alist (nconc (dired-insert-subdir-del elt) mark-alist))
1511 (dired-insert-subdir-newpos dirname)) ; else compute new position
1512 (dired-insert-subdir-doupdate
1513 dirname elt (dired-insert-subdir-doinsert dirname switches))
1514 (if switches-have-R (dired-build-subdir-alist))
1515 (dired-initial-position dirname)
1516 (save-excursion (dired-mark-remembered mark-alist))))
1518 ;; This is a separate function for dired-vms.
1519 (defun dired-insert-subdir-validate (dirname &optional switches)
1520 ;; Check that it is valid to insert DIRNAME with SWITCHES.
1521 ;; Signal an error if invalid (e.g. user typed `i' on `..').
1522 (or (dired-in-this-tree dirname (expand-file-name default-directory))
1523 (error "%s: not in this directory tree" dirname))
1524 (if switches
1525 (let (case-fold-search)
1526 (mapcar
1527 (function
1528 (lambda (x)
1529 (or (eq (null (string-match x switches))
1530 (null (string-match x dired-actual-switches)))
1531 (error "Can't have dirs with and without -%s switches together"
1532 x))))
1533 ;; all switches that make a difference to dired-get-filename:
1534 '("F" "b")))))
1536 (defun dired-alist-add (dir new-marker)
1537 ;; Add new DIR at NEW-MARKER. Sort alist.
1538 (dired-alist-add-1 dir new-marker)
1539 (dired-alist-sort))
1541 (defun dired-alist-sort ()
1542 ;; Keep the alist sorted on buffer position.
1543 (setq dired-subdir-alist
1544 (sort dired-subdir-alist
1545 (function (lambda (elt1 elt2)
1546 (> (dired-get-subdir-min elt1)
1547 (dired-get-subdir-min elt2)))))))
1549 (defun dired-kill-tree (dirname &optional remember-marks)
1550 ;;"Kill all proper subdirs of DIRNAME, excluding DIRNAME itself.
1551 ;; With optional arg REMEMBER-MARKS, return an alist of marked files."
1552 (interactive "DKill tree below directory: ")
1553 (setq dirname (expand-file-name dirname))
1554 (let ((s-alist dired-subdir-alist) dir m-alist)
1555 (while s-alist
1556 (setq dir (car (car s-alist))
1557 s-alist (cdr s-alist))
1558 (if (and (not (string-equal dir dirname))
1559 (dired-in-this-tree dir dirname)
1560 (dired-goto-subdir dir))
1561 (setq m-alist (nconc (dired-kill-subdir remember-marks) m-alist))))
1562 m-alist))
1564 (defun dired-insert-subdir-newpos (new-dir)
1565 ;; Find pos for new subdir, according to tree order.
1566 ;;(goto-char (point-max))
1567 (let ((alist dired-subdir-alist) elt dir pos new-pos)
1568 (while alist
1569 (setq elt (car alist)
1570 alist (cdr alist)
1571 dir (car elt)
1572 pos (dired-get-subdir-min elt))
1573 (if (dired-tree-lessp dir new-dir)
1574 ;; Insert NEW-DIR after DIR
1575 (setq new-pos (dired-get-subdir-max elt)
1576 alist nil)))
1577 (goto-char new-pos))
1578 ;; want a separating newline between subdirs
1579 (or (eobp)
1580 (forward-line -1))
1581 (insert "\n")
1582 (point))
1584 (defun dired-insert-subdir-del (element)
1585 ;; Erase an already present subdir (given by ELEMENT) from buffer.
1586 ;; Move to that buffer position. Return a mark-alist.
1587 (let ((begin-marker (dired-get-subdir-min element)))
1588 (goto-char begin-marker)
1589 ;; Are at beginning of subdir (and inside it!). Now determine its end:
1590 (goto-char (dired-subdir-max))
1591 (or (eobp);; want a separating newline _between_ subdirs:
1592 (forward-char -1))
1593 (prog1
1594 (dired-remember-marks begin-marker (point))
1595 (delete-region begin-marker (point)))))
1597 (defun dired-insert-subdir-doinsert (dirname switches)
1598 ;; Insert ls output after point and put point on the correct
1599 ;; position for the subdir alist.
1600 ;; Return the boundary of the inserted text (as list of BEG and END).
1601 (let ((begin (point)) end)
1602 (message "Reading directory %s..." dirname)
1603 (let ((dired-actual-switches
1604 (or switches
1605 (dired-replace-in-string "R" "" dired-actual-switches))))
1606 (if (equal dirname (car (car (reverse dired-subdir-alist))))
1607 ;; top level directory may contain wildcards:
1608 (dired-readin-insert dired-directory)
1609 (let ((opoint (point)))
1610 (insert-directory dirname dired-actual-switches nil t)
1611 (dired-insert-set-properties opoint (point)))))
1612 (message "Reading directory %s...done" dirname)
1613 (setq end (point-marker))
1614 (indent-rigidly begin end 2)
1615 ;; call dired-insert-headerline afterwards, as under VMS dired-ls
1616 ;; does insert the headerline itself and the insert function just
1617 ;; moves point.
1618 ;; Need a marker for END as this inserts text.
1619 (goto-char begin)
1620 (dired-insert-headerline dirname)
1621 ;; point is now like in dired-build-subdir-alist
1622 (prog1
1623 (list begin (marker-position end))
1624 (set-marker end nil))))
1626 (defun dired-insert-subdir-doupdate (dirname elt beg-end)
1627 ;; Point is at the correct subdir alist position for ELT,
1628 ;; BEG-END is the subdir-region (as list of begin and end).
1629 (if elt ; subdir was already present
1630 ;; update its position (should actually be unchanged)
1631 (set-marker (dired-get-subdir-min elt) (point-marker))
1632 (dired-alist-add dirname (point-marker)))
1633 ;; The hook may depend on the subdir-alist containing the just
1634 ;; inserted subdir, so run it after dired-alist-add:
1635 (if dired-after-readin-hook
1636 (save-excursion
1637 (let ((begin (nth 0 beg-end))
1638 (end (nth 1 beg-end)))
1639 (goto-char begin)
1640 (save-restriction
1641 (narrow-to-region begin end)
1642 ;; hook may add or delete lines, but the subdir boundary
1643 ;; marker floats
1644 (run-hooks 'dired-after-readin-hook))))))
1646 (defun dired-tree-lessp (dir1 dir2)
1647 ;; Lexicographic order on pathname components, like `ls -lR':
1648 ;; DIR1 < DIR2 iff DIR1 comes *before* DIR2 in an `ls -lR' listing,
1649 ;; i.e., iff DIR1 is a (grand)parent dir of DIR2,
1650 ;; or DIR1 and DIR2 are in the same parentdir and their last
1651 ;; components are string-lessp.
1652 ;; Thus ("/usr/" "/usr/bin") and ("/usr/a/" "/usr/b/") are tree-lessp.
1653 ;; string-lessp could arguably be replaced by file-newer-than-file-p
1654 ;; if dired-actual-switches contained `t'.
1655 (setq dir1 (file-name-as-directory dir1)
1656 dir2 (file-name-as-directory dir2))
1657 (let ((components-1 (dired-split "/" dir1))
1658 (components-2 (dired-split "/" dir2)))
1659 (while (and components-1
1660 components-2
1661 (equal (car components-1) (car components-2)))
1662 (setq components-1 (cdr components-1)
1663 components-2 (cdr components-2)))
1664 (let ((c1 (car components-1))
1665 (c2 (car components-2)))
1667 (cond ((and c1 c2)
1668 (string-lessp c1 c2))
1669 ((and (null c1) (null c2))
1670 nil) ; they are equal, not lessp
1671 ((null c1) ; c2 is a subdir of c1: c1<c2
1673 ((null c2) ; c1 is a subdir of c2: c1>c2
1674 nil)
1675 (t (error "This can't happen"))))))
1677 ;; There should be a builtin split function - inverse to mapconcat.
1678 (defun dired-split (pat str &optional limit)
1679 "Splitting on regexp PAT, turn string STR into a list of substrings.
1680 Optional third arg LIMIT (>= 1) is a limit to the length of the
1681 resulting list.
1682 Thus, if SEP is a regexp that only matches itself,
1684 (mapconcat 'identity (dired-split SEP STRING) SEP)
1686 is always equal to STRING."
1687 (let* ((start (string-match pat str))
1688 (result (list (substring str 0 start)))
1689 (count 1)
1690 (end (if start (match-end 0))))
1691 (if end ; else nothing left
1692 (while (and (or (not (integerp limit))
1693 (< count limit))
1694 (string-match pat str end))
1695 (setq start (match-beginning 0)
1696 count (1+ count)
1697 result (cons (substring str end start) result)
1698 end (match-end 0)
1699 start end)
1701 (if (and (or (not (integerp limit))
1702 (< count limit))
1703 end) ; else nothing left
1704 (setq result
1705 (cons (substring str end) result)))
1706 (nreverse result)))
1708 ;;; moving by subdirectories
1710 ;;;###autoload
1711 (defun dired-prev-subdir (arg &optional no-error-if-not-found no-skip)
1712 "Go to previous subdirectory, regardless of level.
1713 When called interactively and not on a subdir line, go to this subdir's line."
1714 ;;(interactive "p")
1715 (interactive
1716 (list (if current-prefix-arg
1717 (prefix-numeric-value current-prefix-arg)
1718 ;; if on subdir start already, don't stay there!
1719 (if (dired-get-subdir) 1 0))))
1720 (dired-next-subdir (- arg) no-error-if-not-found no-skip))
1722 (defun dired-subdir-min ()
1723 (save-excursion
1724 (if (not (dired-prev-subdir 0 t t))
1725 (error "Not in a subdir!")
1726 (point))))
1728 ;;;###autoload
1729 (defun dired-goto-subdir (dir)
1730 "Go to end of header line of DIR in this dired buffer.
1731 Return value of point on success, otherwise return nil.
1732 The next char is either \\n, or \\r if DIR is hidden."
1733 (interactive
1734 (prog1 ; let push-mark display its message
1735 (list (expand-file-name
1736 (completing-read "Goto in situ directory: " ; prompt
1737 dired-subdir-alist ; table
1738 nil ; predicate
1739 t ; require-match
1740 (dired-current-directory))))
1741 (push-mark)))
1742 (setq dir (file-name-as-directory dir))
1743 (let ((elt (assoc dir dired-subdir-alist)))
1744 (and elt
1745 (goto-char (dired-get-subdir-min elt))
1746 ;; dired-subdir-hidden-p and dired-add-entry depend on point being
1747 ;; at either \r or \n after this function succeeds.
1748 (progn (skip-chars-forward "^\r\n")
1749 (point)))))
1751 ;;;###autoload
1752 (defun dired-mark-subdir-files ()
1753 "Mark all files except `.' and `..'."
1754 (interactive)
1755 (let ((p-min (dired-subdir-min)))
1756 (dired-mark-files-in-region p-min (dired-subdir-max))))
1758 ;;;###autoload
1759 (defun dired-kill-subdir (&optional remember-marks)
1760 "Remove all lines of current subdirectory.
1761 Lower levels are unaffected."
1762 ;; With optional REMEMBER-MARKS, return a mark-alist.
1763 (interactive)
1764 (let ((beg (dired-subdir-min))
1765 (end (dired-subdir-max))
1766 buffer-read-only cur-dir)
1767 (setq cur-dir (dired-current-directory))
1768 (if (equal cur-dir default-directory)
1769 (error "Attempt to kill top level directory"))
1770 (prog1
1771 (if remember-marks (dired-remember-marks beg end))
1772 (delete-region beg end)
1773 (if (eobp) ; don't leave final blank line
1774 (delete-char -1))
1775 (dired-unsubdir cur-dir))))
1777 (defun dired-unsubdir (dir)
1778 ;; Remove DIR from the alist
1779 (setq dired-subdir-alist
1780 (delq (assoc dir dired-subdir-alist) dired-subdir-alist)))
1782 ;;;###autoload
1783 (defun dired-tree-up (arg)
1784 "Go up ARG levels in the dired tree."
1785 (interactive "p")
1786 (let ((dir (dired-current-directory)))
1787 (while (>= arg 1)
1788 (setq arg (1- arg)
1789 dir (file-name-directory (directory-file-name dir))))
1790 ;;(setq dir (expand-file-name dir))
1791 (or (dired-goto-subdir dir)
1792 (error "Cannot go up to %s - not in this tree." dir))))
1794 ;;;###autoload
1795 (defun dired-tree-down ()
1796 "Go down in the dired tree."
1797 (interactive)
1798 (let ((dir (dired-current-directory)) ; has slash
1799 pos case-fold-search) ; filenames are case sensitive
1800 (let ((rest (reverse dired-subdir-alist)) elt)
1801 (while rest
1802 (setq elt (car rest)
1803 rest (cdr rest))
1804 (if (dired-in-this-tree (directory-file-name (car elt)) dir)
1805 (setq rest nil
1806 pos (dired-goto-subdir (car elt))))))
1807 (if pos
1808 (goto-char pos)
1809 (error "At the bottom"))))
1811 ;;; hiding
1813 (defun dired-unhide-subdir ()
1814 (let (buffer-read-only)
1815 (subst-char-in-region (dired-subdir-min) (dired-subdir-max) ?\r ?\n)))
1817 (defun dired-hide-check ()
1818 (or selective-display
1819 (error "selective-display must be t for subdir hiding to work!")))
1821 (defun dired-subdir-hidden-p (dir)
1822 (and selective-display
1823 (save-excursion
1824 (dired-goto-subdir dir)
1825 (looking-at "\r"))))
1827 ;;;###autoload
1828 (defun dired-hide-subdir (arg)
1829 "Hide or unhide the current subdirectory and move to next directory.
1830 Optional prefix arg is a repeat factor.
1831 Use \\[dired-hide-all] to (un)hide all directories."
1832 (interactive "p")
1833 (dired-hide-check)
1834 (while (>= (setq arg (1- arg)) 0)
1835 (let* ((cur-dir (dired-current-directory))
1836 (hidden-p (dired-subdir-hidden-p cur-dir))
1837 (elt (assoc cur-dir dired-subdir-alist))
1838 (end-pos (1- (dired-get-subdir-max elt)))
1839 buffer-read-only)
1840 ;; keep header line visible, hide rest
1841 (goto-char (dired-get-subdir-min elt))
1842 (skip-chars-forward "^\n\r")
1843 (if hidden-p
1844 (subst-char-in-region (point) end-pos ?\r ?\n)
1845 (subst-char-in-region (point) end-pos ?\n ?\r)))
1846 (dired-next-subdir 1 t)))
1848 ;;;###autoload
1849 (defun dired-hide-all (arg)
1850 "Hide all subdirectories, leaving only their header lines.
1851 If there is already something hidden, make everything visible again.
1852 Use \\[dired-hide-subdir] to (un)hide a particular subdirectory."
1853 (interactive "P")
1854 (dired-hide-check)
1855 (let (buffer-read-only)
1856 (if (save-excursion
1857 (goto-char (point-min))
1858 (search-forward "\r" nil t))
1859 ;; unhide - bombs on \r in filenames
1860 (subst-char-in-region (point-min) (point-max) ?\r ?\n)
1861 ;; hide
1862 (let ((pos (point-max)) ; pos of end of last directory
1863 (alist dired-subdir-alist))
1864 (while alist ; while there are dirs before pos
1865 (subst-char-in-region (dired-get-subdir-min (car alist)) ; pos of prev dir
1866 (save-excursion
1867 (goto-char pos) ; current dir
1868 ;; we're somewhere on current dir's line
1869 (forward-line -1)
1870 (point))
1871 ?\n ?\r)
1872 (setq pos (dired-get-subdir-min (car alist))) ; prev dir gets current dir
1873 (setq alist (cdr alist)))))))
1875 ;;;###end dired-ins.el
1878 ;; Functions for searching in tags style among marked files.
1880 ;;;###autoload
1881 (defun dired-do-search (regexp)
1882 "Search through all marked files for a match for REGEXP.
1883 Stops when a match is found.
1884 To continue searching for next match, use command \\[tags-loop-continue]."
1885 (interactive "sSearch marked files (regexp): ")
1886 (tags-search regexp '(dired-get-marked-files)))
1888 ;;;###autoload
1889 (defun dired-do-query-replace (from to &optional delimited)
1890 "Do `query-replace-regexp' of FROM with TO, on all marked files.
1891 Third arg DELIMITED (prefix arg) means replace only word-delimited matches.
1892 If you exit (\\[keyboard-quit] or ESC), you can resume the query replace
1893 with the command \\[tags-loop-continue]."
1894 (interactive
1895 "sQuery replace in marked files (regexp): \nsQuery replace %s by: \nP")
1896 (tags-query-replace from to delimited '(dired-get-marked-files)))
1899 (provide 'dired-aux)
1901 ;;; dired-aux.el ends here