2007-08-19 Michael Kifer <kifer@cs.stonybrook.edu>
[emacs.git] / lisp / dired-aux.el
blob124c53b44c5aa9f7bee1cce2f93ed9c39e010df1
1 ;;; dired-aux.el --- less commonly used parts of dired -*-byte-compile-dynamic: t;-*-
3 ;; Copyright (C) 1985, 1986, 1992, 1994, 1998, 2000, 2001, 2002, 2003,
4 ;; 2004, 2005, 2006, 2007 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 3, or (at your option)
15 ;; any later version.
17 ;; GNU Emacs is distributed in the hope that it will be useful,
18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 ;; GNU General Public License for more details.
22 ;; You should have received a copy of the GNU General Public License
23 ;; along with GNU Emacs; see the file COPYING. If not, write to the
24 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
25 ;; Boston, MA 02110-1301, USA.
27 ;;; Commentary:
29 ;; The parts of dired mode not normally used. This is a space-saving hack
30 ;; to avoid having to load a large mode when all that's wanted are a few
31 ;; functions.
33 ;; Rewritten in 1990/1991 to add tree features, file marking and
34 ;; sorting by Sebastian Kremer <sk@thp.uni-koeln.de>.
35 ;; Finished up by rms in 1992.
37 ;;; Code:
39 ;; We need macros in dired.el to compile properly.
40 (eval-when-compile (require 'dired))
42 (defvar dired-create-files-failures nil
43 "Variable where `dired-create-files' records failing file names.
44 Functions that operate recursively can store additional names
45 into this list; they also should call `dired-log' to log the errors.")
47 ;;; 15K
48 ;;;###begin dired-cmd.el
49 ;; Diffing and compressing
51 (defconst dired-star-subst-regexp "\\(^\\|[ \t]\\)\\*\\([ \t]\\|$\\)")
52 (defconst dired-quark-subst-regexp "\\(^\\|[ \t]\\)\\?\\([ \t]\\|$\\)")
54 ;;;###autoload
55 (defun dired-diff (file &optional switches)
56 "Compare file at point with file FILE using `diff'.
57 FILE defaults to the file at the mark. (That's the mark set by
58 \\[set-mark-command], not by Dired's \\[dired-mark] command.)
59 The prompted-for file is the first file given to `diff'.
60 With prefix arg, prompt for second argument SWITCHES,
61 which is options for `diff'."
62 (interactive
63 (let ((current (dired-get-filename t))
64 (default (if (mark t)
65 (save-excursion (goto-char (mark t))
66 (dired-get-filename t t)))))
67 (if (or (equal default current)
68 (and (not (equal (dired-dwim-target-directory)
69 (dired-current-directory)))
70 (not mark-active)))
71 (setq default nil))
72 (require 'diff)
73 (list (read-file-name (format "Diff %s with%s: "
74 current
75 (if default
76 (concat " (default " default ")")
77 ""))
78 (if default
79 (dired-current-directory)
80 (dired-dwim-target-directory))
81 default t)
82 (if current-prefix-arg
83 (read-string "Options for diff: "
84 (if (stringp diff-switches)
85 diff-switches
86 (mapconcat 'identity diff-switches " ")))))))
87 (diff file (dired-get-filename t) switches))
89 ;;;###autoload
90 (defun dired-backup-diff (&optional switches)
91 "Diff this file with its backup file or vice versa.
92 Uses the latest backup, if there are several numerical backups.
93 If this file is a backup, diff it with its original.
94 The backup file is the first file given to `diff'.
95 With prefix arg, prompt for argument SWITCHES which is options for `diff'."
96 (interactive
97 (if current-prefix-arg
98 (list (read-string "Options for diff: "
99 (if (stringp diff-switches)
100 diff-switches
101 (mapconcat 'identity diff-switches " "))))
102 nil))
103 (diff-backup (dired-get-filename) switches))
105 ;;;###autoload
106 (defun dired-compare-directories (dir2 predicate)
107 "Mark files with different file attributes in two dired buffers.
108 Compare file attributes of files in the current directory
109 with file attributes in directory DIR2 using PREDICATE on pairs of files
110 with the same name. Mark files for which PREDICATE returns non-nil.
111 Mark files with different names if PREDICATE is nil (or interactively
112 with empty input at the predicate prompt).
114 PREDICATE is a Lisp expression that can refer to the following variables:
116 size1, size2 - file size in bytes
117 mtime1, mtime2 - last modification time in seconds, as a float
118 fa1, fa2 - list of file attributes
119 returned by function `file-attributes'
121 where 1 refers to attribute of file in the current dired buffer
122 and 2 to attribute of file in second dired buffer.
124 Examples of PREDICATE:
126 (> mtime1 mtime2) - mark newer files
127 (not (= size1 size2)) - mark files with different sizes
128 (not (string= (nth 8 fa1) (nth 8 fa2))) - mark files with different modes
129 (not (and (= (nth 2 fa1) (nth 2 fa2)) - mark files with different UID
130 (= (nth 3 fa1) (nth 3 fa2)))) and GID."
131 (interactive
132 (list (read-directory-name (format "Compare %s with: "
133 (dired-current-directory))
134 (dired-dwim-target-directory)
135 (dired-dwim-target-directory))
136 (read-from-minibuffer "Mark if (lisp expr or RET): " nil nil t nil "nil")))
137 (let* ((dir1 (dired-current-directory))
138 (file-alist1 (dired-files-attributes dir1))
139 (file-alist2 (dired-files-attributes dir2))
140 file-list1 file-list2)
141 (setq file-alist1 (delq (assoc "." file-alist1) file-alist1))
142 (setq file-alist1 (delq (assoc ".." file-alist1) file-alist1))
143 (setq file-alist2 (delq (assoc "." file-alist2) file-alist2))
144 (setq file-alist2 (delq (assoc ".." file-alist2) file-alist2))
145 (setq file-list1 (mapcar
146 'cadr
147 (dired-file-set-difference
148 file-alist1 file-alist2
149 predicate))
150 file-list2 (mapcar
151 'cadr
152 (dired-file-set-difference
153 file-alist2 file-alist1
154 predicate)))
155 (dired-fun-in-all-buffers
156 dir1 nil
157 (lambda ()
158 (dired-mark-if
159 (member (dired-get-filename nil t) file-list1) nil)))
160 (dired-fun-in-all-buffers
161 dir2 nil
162 (lambda ()
163 (dired-mark-if
164 (member (dired-get-filename nil t) file-list2) nil)))
165 (message "Marked in dir1: %s files, in dir2: %s files"
166 (length file-list1)
167 (length file-list2))))
169 (defun dired-file-set-difference (list1 list2 predicate)
170 "Combine LIST1 and LIST2 using a set-difference operation.
171 The result list contains all file items that appear in LIST1 but not LIST2.
172 This is a non-destructive function; it makes a copy of the data if necessary
173 to avoid corrupting the original LIST1 and LIST2.
174 PREDICATE (see `dired-compare-directories') is an additional match
175 condition. Two file items are considered to match if they are equal
176 *and* PREDICATE evaluates to t."
177 (if (or (null list1) (null list2))
178 list1
179 (let (res)
180 (dolist (file1 list1)
181 (unless (let ((list list2))
182 (while (and list
183 (not (let* ((file2 (car list))
184 (fa1 (car (cddr file1)))
185 (fa2 (car (cddr file2)))
186 (size1 (nth 7 fa1))
187 (size2 (nth 7 fa2))
188 (mtime1 (float-time (nth 5 fa1)))
189 (mtime2 (float-time (nth 5 fa2))))
190 (and
191 (equal (car file1) (car file2))
192 (not (eval predicate))))))
193 (setq list (cdr list)))
194 list)
195 (setq res (cons file1 res))))
196 (nreverse res))))
198 (defun dired-files-attributes (dir)
199 "Return a list of all file names and attributes from DIR.
200 List has a form of (file-name full-file-name (attribute-list))"
201 (mapcar
202 (lambda (file-name)
203 (let ((full-file-name (expand-file-name file-name dir)))
204 (list file-name
205 full-file-name
206 (file-attributes full-file-name))))
207 (directory-files dir)))
210 (defun dired-touch-initial (files)
211 "Create initial input value for `touch' command."
212 (let (initial)
213 (while files
214 (let ((current (nth 5 (file-attributes (car files)))))
215 (if (and initial (not (equal initial current)))
216 (setq initial (current-time) files nil)
217 (setq initial current))
218 (setq files (cdr files))))
219 (format-time-string "%Y%m%d%H%M.%S" initial)))
221 (defun dired-do-chxxx (attribute-name program op-symbol arg)
222 ;; Change file attributes (mode, group, owner, timestamp) of marked files and
223 ;; refresh their file lines.
224 ;; ATTRIBUTE-NAME is a string describing the attribute to the user.
225 ;; PROGRAM is the program used to change the attribute.
226 ;; OP-SYMBOL is the type of operation (for use in dired-mark-pop-up).
227 ;; ARG describes which files to use, as in dired-get-marked-files.
228 (let* ((files (dired-get-marked-files t arg))
229 (new-attribute
230 (dired-mark-read-string
231 (concat "Change " attribute-name " of %s to: ")
232 (if (eq op-symbol 'touch) (dired-touch-initial files))
233 op-symbol arg files))
234 (operation (concat program " " new-attribute))
235 failures)
236 (setq failures
237 (dired-bunch-files 10000
238 (function dired-check-process)
239 (append
240 (list operation program)
241 (if (eq op-symbol 'touch)
242 '("-t") nil)
243 (list new-attribute)
244 (if (string-match "gnu" system-configuration)
245 '("--") nil))
246 files))
247 (dired-do-redisplay arg);; moves point if ARG is an integer
248 (if failures
249 (dired-log-summary
250 (format "%s: error" operation)
251 nil))))
253 ;;;###autoload
254 (defun dired-do-chmod (&optional arg)
255 "Change the mode of the marked (or next ARG) files.
256 This calls chmod, thus symbolic modes like `g+w' are allowed."
257 (interactive "P")
258 (dired-do-chxxx "Mode" dired-chmod-program 'chmod arg))
260 ;;;###autoload
261 (defun dired-do-chgrp (&optional arg)
262 "Change the group of the marked (or next ARG) files."
263 (interactive "P")
264 (if (memq system-type '(ms-dos windows-nt))
265 (error "chgrp not supported on this system"))
266 (dired-do-chxxx "Group" "chgrp" 'chgrp arg))
268 ;;;###autoload
269 (defun dired-do-chown (&optional arg)
270 "Change the owner of the marked (or next ARG) files."
271 (interactive "P")
272 (if (memq system-type '(ms-dos windows-nt))
273 (error "chown not supported on this system"))
274 (dired-do-chxxx "Owner" dired-chown-program 'chown arg))
276 ;;;###autoload
277 (defun dired-do-touch (&optional arg)
278 "Change the timestamp of the marked (or next ARG) files.
279 This calls touch."
280 (interactive "P")
281 (dired-do-chxxx "Timestamp" dired-touch-program 'touch arg))
283 ;; Process all the files in FILES in batches of a convenient size,
284 ;; by means of (FUNCALL FUNCTION ARGS... SOME-FILES...).
285 ;; Batches are chosen to need less than MAX chars for the file names,
286 ;; allowing 3 extra characters of separator per file name.
287 (defun dired-bunch-files (max function args files)
288 (let (pending
289 past
290 (pending-length 0)
291 failures)
292 ;; Accumulate files as long as they fit in MAX chars,
293 ;; then process the ones accumulated so far.
294 (while files
295 (let* ((thisfile (car files))
296 (thislength (+ (length thisfile) 3))
297 (rest (cdr files)))
298 ;; If we have at least 1 pending file
299 ;; and this file won't fit in the length limit, process now.
300 (if (and pending (> (+ thislength pending-length) max))
301 (setq pending (nreverse pending)
302 ;; The elements of PENDING are now in forward order.
303 ;; Do the operation and record failures.
304 failures (nconc (apply function (append args pending))
305 failures)
306 ;; Transfer the elemens of PENDING onto PAST
307 ;; and clear it out. Now PAST contains the first N files
308 ;; specified (for some N), and FILES contains the rest.
309 past (nconc past pending)
310 pending nil
311 pending-length 0))
312 ;; Do (setq pending (cons thisfile pending))
313 ;; but reuse the cons that was in `files'.
314 (setcdr files pending)
315 (setq pending files)
316 (setq pending-length (+ thislength pending-length))
317 (setq files rest)))
318 (setq pending (nreverse pending))
319 (prog1
320 (nconc (apply function (append args pending))
321 failures)
322 ;; Now the original list FILES has been put back as it was.
323 (nconc past pending))))
325 ;;;###autoload
326 (defun dired-do-print (&optional arg)
327 "Print the marked (or next ARG) files.
328 Uses the shell command coming from variables `lpr-command' and
329 `lpr-switches' as default."
330 (interactive "P")
331 (let* ((file-list (dired-get-marked-files t arg))
332 (command (dired-mark-read-string
333 "Print %s with: "
334 (mapconcat 'identity
335 (cons lpr-command
336 (if (stringp lpr-switches)
337 (list lpr-switches)
338 lpr-switches))
339 " ")
340 'print arg file-list)))
341 (dired-run-shell-command (dired-shell-stuff-it command file-list nil))))
343 ;; Read arguments for a marked-files command that wants a string
344 ;; that is not a file name,
345 ;; perhaps popping up the list of marked files.
346 ;; ARG is the prefix arg and indicates whether the files came from
347 ;; marks (ARG=nil) or a repeat factor (integerp ARG).
348 ;; If the current file was used, the list has but one element and ARG
349 ;; does not matter. (It is non-nil, non-integer in that case, namely '(4)).
351 (defun dired-mark-read-string (prompt initial op-symbol arg files)
352 ;; PROMPT for a string, with INITIAL input.
353 ;; Other args are used to give user feedback and pop-up:
354 ;; OP-SYMBOL of command, prefix ARG, marked FILES.
355 (dired-mark-pop-up
356 nil op-symbol files
357 (function read-string)
358 (format prompt (dired-mark-prompt arg files)) initial))
360 ;;; Cleaning a directory: flagging some backups for deletion.
362 (defvar dired-file-version-alist)
364 ;;;###autoload
365 (defun dired-clean-directory (keep)
366 "Flag numerical backups for deletion.
367 Spares `dired-kept-versions' latest versions, and `kept-old-versions' oldest.
368 Positive prefix arg KEEP overrides `dired-kept-versions';
369 Negative prefix arg KEEP overrides `kept-old-versions' with KEEP made positive.
371 To clear the flags on these files, you can use \\[dired-flag-backup-files]
372 with a prefix argument."
373 (interactive "P")
374 (setq keep (if keep (prefix-numeric-value keep) dired-kept-versions))
375 (let ((early-retention (if (< keep 0) (- keep) kept-old-versions))
376 (late-retention (if (<= keep 0) dired-kept-versions keep))
377 (dired-file-version-alist ()))
378 (message "Cleaning numerical backups (keeping %d late, %d old)..."
379 late-retention early-retention)
380 ;; Look at each file.
381 ;; If the file has numeric backup versions,
382 ;; put on dired-file-version-alist an element of the form
383 ;; (FILENAME . VERSION-NUMBER-LIST)
384 (dired-map-dired-file-lines (function dired-collect-file-versions))
385 ;; Sort each VERSION-NUMBER-LIST,
386 ;; and remove the versions not to be deleted.
387 (let ((fval dired-file-version-alist))
388 (while fval
389 (let* ((sorted-v-list (cons 'q (sort (cdr (car fval)) '<)))
390 (v-count (length sorted-v-list)))
391 (if (> v-count (+ early-retention late-retention))
392 (rplacd (nthcdr early-retention sorted-v-list)
393 (nthcdr (- v-count late-retention)
394 sorted-v-list)))
395 (rplacd (car fval)
396 (cdr sorted-v-list)))
397 (setq fval (cdr fval))))
398 ;; Look at each file. If it is a numeric backup file,
399 ;; find it in a VERSION-NUMBER-LIST and maybe flag it for deletion.
400 (dired-map-dired-file-lines (function dired-trample-file-versions))
401 (message "Cleaning numerical backups...done")))
403 ;;; Subroutines of dired-clean-directory.
405 (defun dired-map-dired-file-lines (fun)
406 ;; Perform FUN with point at the end of each non-directory line.
407 ;; FUN takes one argument, the absolute filename.
408 (save-excursion
409 (let (file buffer-read-only)
410 (goto-char (point-min))
411 (while (not (eobp))
412 (save-excursion
413 (and (not (looking-at dired-re-dir))
414 (not (eolp))
415 (setq file (dired-get-filename nil t)) ; nil on non-file
416 (progn (end-of-line)
417 (funcall fun file))))
418 (forward-line 1)))))
420 (defun dired-collect-file-versions (fn)
421 (let ((fn (file-name-sans-versions fn)))
422 ;; Only do work if this file is not already in the alist.
423 (if (assoc fn dired-file-version-alist)
425 ;; If it looks like file FN has versions, return a list of the versions.
426 ;;That is a list of strings which are file names.
427 ;;The caller may want to flag some of these files for deletion.
428 (let* ((base-versions
429 (concat (file-name-nondirectory fn) ".~"))
430 (backup-extract-version-start (length base-versions))
431 (possibilities (file-name-all-completions
432 base-versions
433 (file-name-directory fn)))
434 (versions (mapcar 'backup-extract-version possibilities)))
435 (if versions
436 (setq dired-file-version-alist
437 (cons (cons fn versions)
438 dired-file-version-alist)))))))
440 (defun dired-trample-file-versions (fn)
441 (let* ((start-vn (string-match "\\.~[0-9]+~$" fn))
442 base-version-list)
443 (and start-vn
444 (setq base-version-list ; there was a base version to which
445 (assoc (substring fn 0 start-vn) ; this looks like a
446 dired-file-version-alist)) ; subversion
447 (not (memq (string-to-number (substring fn (+ 2 start-vn)))
448 base-version-list)) ; this one doesn't make the cut
449 (progn (beginning-of-line)
450 (delete-char 1)
451 (insert dired-del-marker)))))
453 ;;; Shell commands
455 (defun dired-read-shell-command (prompt arg files)
456 ;; "Read a dired shell command prompting with PROMPT (using read-string).
457 ;;ARG is the prefix arg and may be used to indicate in the prompt which
458 ;; files are affected.
459 ;;This is an extra function so that you can redefine it, e.g., to use gmhist."
460 (dired-mark-pop-up
461 nil 'shell files
462 (function read-string)
463 (format prompt (dired-mark-prompt arg files))
464 nil 'shell-command-history))
466 ;; The in-background argument is only needed in Emacs 18 where
467 ;; shell-command doesn't understand an appended ampersand `&'.
468 ;;;###autoload
469 (defun dired-do-shell-command (command &optional arg file-list)
470 "Run a shell command COMMAND on the marked files.
471 If no files are marked or a specific numeric prefix arg is given,
472 the next ARG files are used. Just \\[universal-argument] means the current file.
473 The prompt mentions the file(s) or the marker, as appropriate.
475 If there is a `*' in COMMAND, surrounded by whitespace, this runs
476 COMMAND just once with the entire file list substituted there.
478 If there is no `*', but there is a `?' in COMMAND, surrounded by
479 whitespace, this runs COMMAND on each file individually with the
480 file name substituted for `?'.
482 Otherwise, this runs COMMAND on each file individually with the
483 file name added at the end of COMMAND (separated by a space).
485 `*' and `?' when not surrounded by whitespace have no special
486 significance for `dired-do-shell-command', and are passed through
487 normally to the shell, but you must confirm first. To pass `*' by
488 itself to the shell as a wildcard, type `*\"\"'.
490 If COMMAND produces output, it goes to a separate buffer.
492 This feature does not try to redisplay Dired buffers afterward, as
493 there's no telling what files COMMAND may have changed.
494 Type \\[dired-do-redisplay] to redisplay the marked files.
496 When COMMAND runs, its working directory is the top-level directory of
497 the Dired buffer, so output files usually are created there instead of
498 in a subdir.
500 In a noninteractive call (from Lisp code), you must specify
501 the list of file names explicitly with the FILE-LIST argument, which
502 can be produced by `dired-get-marked-files', for example."
503 ;;Functions dired-run-shell-command and dired-shell-stuff-it do the
504 ;;actual work and can be redefined for customization.
505 (interactive
506 (let ((files (dired-get-marked-files t current-prefix-arg)))
507 (list
508 ;; Want to give feedback whether this file or marked files are used:
509 (dired-read-shell-command (concat "! on "
510 "%s: ")
511 current-prefix-arg
512 files)
513 current-prefix-arg
514 files)))
515 (let* ((on-each (not (string-match dired-star-subst-regexp command)))
516 (subst (not (string-match dired-quark-subst-regexp command)))
517 (star (not (string-match "\\*" command)))
518 (qmark (not (string-match "\\?" command))))
519 ;; Get confirmation for wildcards that may have been meant
520 ;; to control substitution of a file name or the file name list.
521 (if (cond ((not (or on-each subst))
522 (error "You can not combine `*' and `?' substitution marks"))
523 ((and star (not on-each))
524 (y-or-n-p "Confirm--do you mean to use `*' as a wildcard? "))
525 ((and qmark (not subst))
526 (y-or-n-p "Confirm--do you mean to use `?' as a wildcard? "))
527 (t))
528 (if on-each
529 (dired-bunch-files
530 (- 10000 (length command))
531 (function (lambda (&rest files)
532 (dired-run-shell-command
533 (dired-shell-stuff-it command files t arg))))
535 file-list)
536 ;; execute the shell command
537 (dired-run-shell-command
538 (dired-shell-stuff-it command file-list nil arg))))))
540 ;; Might use {,} for bash or csh:
541 (defvar dired-mark-prefix ""
542 "Prepended to marked files in dired shell commands.")
543 (defvar dired-mark-postfix ""
544 "Appended to marked files in dired shell commands.")
545 (defvar dired-mark-separator " "
546 "Separates marked files in dired shell commands.")
548 (defun dired-shell-stuff-it (command file-list on-each &optional raw-arg)
549 ;; "Make up a shell command line from COMMAND and FILE-LIST.
550 ;; If ON-EACH is t, COMMAND should be applied to each file, else
551 ;; simply concat all files and apply COMMAND to this.
552 ;; FILE-LIST's elements will be quoted for the shell."
553 ;; Might be redefined for smarter things and could then use RAW-ARG
554 ;; (coming from interactive P and currently ignored) to decide what to do.
555 ;; Smart would be a way to access basename or extension of file names.
556 (let ((stuff-it
557 (if (or (string-match dired-star-subst-regexp command)
558 (string-match dired-quark-subst-regexp command))
559 (lambda (x)
560 (let ((retval command))
561 (while (string-match
562 "\\(^\\|[ \t]\\)\\([*?]\\)\\([ \t]\\|$\\)" retval)
563 (setq retval (replace-match x t t retval 2)))
564 retval))
565 (lambda (x) (concat command dired-mark-separator x)))))
566 (if on-each
567 (mapconcat stuff-it (mapcar 'shell-quote-argument file-list) ";")
568 (let ((files (mapconcat 'shell-quote-argument
569 file-list dired-mark-separator)))
570 (if (> (length file-list) 1)
571 (setq files (concat dired-mark-prefix files dired-mark-postfix)))
572 (funcall stuff-it files)))))
574 ;; This is an extra function so that it can be redefined by ange-ftp.
575 ;;;###autoload
576 (defun dired-run-shell-command (command)
577 (let ((handler
578 (find-file-name-handler (directory-file-name default-directory)
579 'shell-command)))
580 (if handler (apply handler 'shell-command (list command))
581 (shell-command command)))
582 ;; Return nil for sake of nconc in dired-bunch-files.
583 nil)
586 (defun dired-check-process (msg program &rest arguments)
587 ; "Display MSG while running PROGRAM, and check for output.
588 ;Remaining arguments are strings passed as command arguments to PROGRAM.
589 ; On error, insert output
590 ; in a log buffer and return the offending ARGUMENTS or PROGRAM.
591 ; Caller can cons up a list of failed args.
592 ;Else returns nil for success."
593 (let (err-buffer err (dir default-directory))
594 (message "%s..." msg)
595 (save-excursion
596 ;; Get a clean buffer for error output:
597 (setq err-buffer (get-buffer-create " *dired-check-process output*"))
598 (set-buffer err-buffer)
599 (erase-buffer)
600 (setq default-directory dir ; caller's default-directory
601 err (not (eq 0 (apply 'process-file program nil t nil arguments))))
602 (if err
603 (progn
604 (dired-log (concat program " " (prin1-to-string arguments) "\n"))
605 (dired-log err-buffer)
606 (or arguments program t))
607 (kill-buffer err-buffer)
608 (message "%s...done" msg)
609 nil))))
611 ;; Commands that delete or redisplay part of the dired buffer.
613 (defun dired-kill-line (&optional arg)
614 (interactive "P")
615 (setq arg (prefix-numeric-value arg))
616 (let (buffer-read-only file)
617 (while (/= 0 arg)
618 (setq file (dired-get-filename nil t))
619 (if (not file)
620 (error "Can only kill file lines")
621 (save-excursion (and file
622 (dired-goto-subdir file)
623 (dired-kill-subdir)))
624 (delete-region (progn (beginning-of-line) (point))
625 (progn (forward-line 1) (point)))
626 (if (> arg 0)
627 (setq arg (1- arg))
628 (setq arg (1+ arg))
629 (forward-line -1))))
630 (dired-move-to-filename)))
632 ;;;###autoload
633 (defun dired-do-kill-lines (&optional arg fmt)
634 "Kill all marked lines (not the files).
635 With a prefix argument, kill that many lines starting with the current line.
636 \(A negative argument kills backward.)
637 If you use this command with a prefix argument to kill the line
638 for a file that is a directory, which you have inserted in the
639 Dired buffer as a subdirectory, then it deletes that subdirectory
640 from the buffer as well.
641 To kill an entire subdirectory \(without killing its line in the
642 parent directory), go to its directory header line and use this
643 command with a prefix argument (the value does not matter)."
644 ;; Returns count of killed lines. FMT="" suppresses message.
645 (interactive "P")
646 (if arg
647 (if (dired-get-subdir)
648 (dired-kill-subdir)
649 (dired-kill-line arg))
650 (save-excursion
651 (goto-char (point-min))
652 (let (buffer-read-only
653 (count 0)
654 (regexp (dired-marker-regexp)))
655 (while (and (not (eobp))
656 (re-search-forward regexp nil t))
657 (setq count (1+ count))
658 (delete-region (progn (beginning-of-line) (point))
659 (progn (forward-line 1) (point))))
660 (or (equal "" fmt)
661 (message (or fmt "Killed %d line%s.") count (dired-plural-s count)))
662 count))))
664 ;;;###end dired-cmd.el
666 ;;; 30K
667 ;;;###begin dired-cp.el
669 (defun dired-compress ()
670 ;; Compress or uncompress the current file.
671 ;; Return nil for success, offending filename else.
672 (let* (buffer-read-only
673 (from-file (dired-get-filename))
674 (new-file (dired-compress-file from-file)))
675 (if new-file
676 (let ((start (point)))
677 ;; Remove any preexisting entry for the name NEW-FILE.
678 (condition-case nil
679 (dired-remove-entry new-file)
680 (error nil))
681 (goto-char start)
682 ;; Now replace the current line with an entry for NEW-FILE.
683 (dired-update-file-line new-file) nil)
684 (dired-log (concat "Failed to compress" from-file))
685 from-file)))
687 (defvar dired-compress-file-suffixes
688 '(("\\.gz\\'" "" "gunzip")
689 ("\\.tgz\\'" ".tar" "gunzip")
690 ("\\.Z\\'" "" "uncompress")
691 ;; For .z, try gunzip. It might be an old gzip file,
692 ;; or it might be from compact? pack? (which?) but gunzip handles both.
693 ("\\.z\\'" "" "gunzip")
694 ("\\.dz\\'" "" "dictunzip")
695 ("\\.tbz\\'" ".tar" "bunzip2")
696 ("\\.bz2\\'" "" "bunzip2")
697 ;; This item controls naming for compression.
698 ("\\.tar\\'" ".tgz" nil))
699 "Control changes in file name suffixes for compression and uncompression.
700 Each element specifies one transformation rule, and has the form:
701 (REGEXP NEW-SUFFIX PROGRAM)
702 The rule applies when the old file name matches REGEXP.
703 The new file name is computed by deleting the part that matches REGEXP
704 (as well as anything after that), then adding NEW-SUFFIX in its place.
705 If PROGRAM is non-nil, the rule is an uncompression rule,
706 and uncompression is done by running PROGRAM.
707 Otherwise, the rule is a compression rule, and compression is done with gzip.")
709 ;;;###autoload
710 (defun dired-compress-file (file)
711 ;; Compress or uncompress FILE.
712 ;; Return the name of the compressed or uncompressed file.
713 ;; Return nil if no change in files.
714 (let ((handler (find-file-name-handler file 'dired-compress-file))
715 suffix newname
716 (suffixes dired-compress-file-suffixes))
717 ;; See if any suffix rule matches this file name.
718 (while suffixes
719 (let (case-fold-search)
720 (if (string-match (car (car suffixes)) file)
721 (setq suffix (car suffixes) suffixes nil))
722 (setq suffixes (cdr suffixes))))
723 ;; If so, compute desired new name.
724 (if suffix
725 (setq newname (concat (substring file 0 (match-beginning 0))
726 (nth 1 suffix))))
727 (cond (handler
728 (funcall handler 'dired-compress-file file))
729 ((file-symlink-p file)
730 nil)
731 ((and suffix (nth 2 suffix))
732 ;; We found an uncompression rule.
733 (if (not (dired-check-process (concat "Uncompressing " file)
734 (nth 2 suffix) file))
735 newname))
737 ;;; We don't recognize the file as compressed, so compress it.
738 ;;; Try gzip; if we don't have that, use compress.
739 (condition-case nil
740 (let ((out-name (concat file ".gz")))
741 (and (or (not (file-exists-p out-name))
742 (y-or-n-p
743 (format "File %s already exists. Really compress? "
744 out-name)))
745 (not (dired-check-process (concat "Compressing " file)
746 "gzip" "-f" file))
747 (or (file-exists-p out-name)
748 (setq out-name (concat file ".z")))
749 ;; Rename the compressed file to NEWNAME
750 ;; if it hasn't got that name already.
751 (if (and newname (not (equal newname out-name)))
752 (progn
753 (rename-file out-name newname t)
754 newname)
755 out-name)))
756 (file-error
757 (if (not (dired-check-process (concat "Compressing " file)
758 "compress" "-f" file))
759 ;; Don't use NEWNAME with `compress'.
760 (concat file ".Z"))))))))
762 (defun dired-mark-confirm (op-symbol arg)
763 ;; Request confirmation from the user that the operation described
764 ;; by OP-SYMBOL is to be performed on the marked files.
765 ;; Confirmation consists in a y-or-n question with a file list
766 ;; pop-up unless OP-SYMBOL is a member of `dired-no-confirm'.
767 ;; The files used are determined by ARG (as in dired-get-marked-files).
768 (or (eq dired-no-confirm t)
769 (memq op-symbol dired-no-confirm)
770 ;; Pass t for DISTINGUISH-ONE-MARKED so that a single file which
771 ;; is marked pops up a window. That will help the user see
772 ;; it isn't the current line file.
773 (let ((files (dired-get-marked-files t arg nil t))
774 (string (if (eq op-symbol 'compress) "Compress or uncompress"
775 (capitalize (symbol-name op-symbol)))))
776 (dired-mark-pop-up nil op-symbol files (function y-or-n-p)
777 (concat string " "
778 (dired-mark-prompt arg files) "? ")))))
780 (defun dired-map-over-marks-check (fun arg op-symbol &optional show-progress)
781 ; "Map FUN over marked files (with second ARG like in dired-map-over-marks)
782 ; and display failures.
784 ; FUN takes zero args. It returns non-nil (the offending object, e.g.
785 ; the short form of the filename) for a failure and probably logs a
786 ; detailed error explanation using function `dired-log'.
788 ; OP-SYMBOL is a symbol describing the operation performed (e.g.
789 ; `compress'). It is used with `dired-mark-pop-up' to prompt the user
790 ; (e.g. with `Compress * [2 files]? ') and to display errors (e.g.
791 ; `Failed to compress 1 of 2 files - type W to see why ("foo")')
793 ; SHOW-PROGRESS if non-nil means redisplay dired after each file."
794 (if (dired-mark-confirm op-symbol arg)
795 (let* ((total-list;; all of FUN's return values
796 (dired-map-over-marks (funcall fun) arg show-progress))
797 (total (length total-list))
798 (failures (delq nil total-list))
799 (count (length failures))
800 (string (if (eq op-symbol 'compress) "Compress or uncompress"
801 (capitalize (symbol-name op-symbol)))))
802 (if (not failures)
803 (message "%s: %d file%s."
804 string total (dired-plural-s total))
805 ;; end this bunch of errors:
806 (dired-log-summary
807 (format "Failed to %s %d of %d file%s"
808 (downcase string) count total (dired-plural-s total))
809 failures)))))
811 (defvar dired-query-alist
812 '((?\y . y) (?\040 . y) ; `y' or SPC means accept once
813 (?n . n) (?\177 . n) ; `n' or DEL skips once
814 (?! . yes) ; `!' accepts rest
815 (?q . no) (?\e . no) ; `q' or ESC skips rest
816 ;; None of these keys quit - use C-g for that.
819 ;;;###autoload
820 (defun dired-query (qs-var qs-prompt &rest qs-args)
821 ;; Query user and return nil or t.
822 ;; Store answer in symbol VAR (which must initially be bound to nil).
823 ;; Format PROMPT with ARGS.
824 ;; Binding variable help-form will help the user who types the help key.
825 (let* ((char (symbol-value qs-var))
826 (action (cdr (assoc char dired-query-alist))))
827 (cond ((eq 'yes action)
828 t) ; accept, and don't ask again
829 ((eq 'no action)
830 nil) ; skip, and don't ask again
831 (t;; no lasting effects from last time we asked - ask now
832 (let ((qprompt (concat qs-prompt
833 (if help-form
834 (format " [Type yn!q or %s] "
835 (key-description
836 (char-to-string help-char)))
837 " [Type y, n, q or !] ")))
838 result elt)
839 ;; Actually it looks nicer without cursor-in-echo-area - you can
840 ;; look at the dired buffer instead of at the prompt to decide.
841 (apply 'message qprompt qs-args)
842 (setq char (set qs-var (read-char)))
843 (while (not (setq elt (assoc char dired-query-alist)))
844 (message "Invalid char - type %c for help." help-char)
845 (ding)
846 (sit-for 1)
847 (apply 'message qprompt qs-args)
848 (setq char (set qs-var (read-char))))
849 ;; Display the question with the answer.
850 (message "%s" (concat (apply 'format qprompt qs-args)
851 (char-to-string char)))
852 (memq (cdr elt) '(t y yes)))))))
854 ;;;###autoload
855 (defun dired-do-compress (&optional arg)
856 "Compress or uncompress marked (or next ARG) files."
857 (interactive "P")
858 (dired-map-over-marks-check (function dired-compress) arg 'compress t))
860 ;; Commands for Emacs Lisp files - load and byte compile
862 (defun dired-byte-compile ()
863 ;; Return nil for success, offending file name else.
864 (let* ((filename (dired-get-filename))
865 elc-file buffer-read-only failure)
866 (condition-case err
867 (save-excursion (byte-compile-file filename))
868 (error
869 (setq failure err)))
870 (setq elc-file (byte-compile-dest-file filename))
871 (or (file-exists-p elc-file)
872 (setq failure t))
873 (if failure
874 (progn
875 (dired-log "Byte compile error for %s:\n%s\n" filename failure)
876 (dired-make-relative filename))
877 (dired-remove-file elc-file)
878 (forward-line) ; insert .elc after its .el file
879 (dired-add-file elc-file)
880 nil)))
882 ;;;###autoload
883 (defun dired-do-byte-compile (&optional arg)
884 "Byte compile marked (or next ARG) Emacs Lisp files."
885 (interactive "P")
886 (dired-map-over-marks-check (function dired-byte-compile) arg 'byte-compile t))
888 (defun dired-load ()
889 ;; Return nil for success, offending file name else.
890 (let ((file (dired-get-filename)) failure)
891 (condition-case err
892 (load file nil nil t)
893 (error (setq failure err)))
894 (if (not failure)
896 (dired-log "Load error for %s:\n%s\n" file failure)
897 (dired-make-relative file))))
899 ;;;###autoload
900 (defun dired-do-load (&optional arg)
901 "Load the marked (or next ARG) Emacs Lisp files."
902 (interactive "P")
903 (dired-map-over-marks-check (function dired-load) arg 'load t))
905 ;;;###autoload
906 (defun dired-do-redisplay (&optional arg test-for-subdir)
907 "Redisplay all marked (or next ARG) files.
908 If on a subdir line, redisplay that subdirectory. In that case,
909 a prefix arg lets you edit the `ls' switches used for the new listing.
911 Dired remembers switches specified with a prefix arg, so that reverting
912 the buffer will not reset them. However, using `dired-undo' to re-insert
913 or delete subdirectories can bypass this machinery. Hence, you sometimes
914 may have to reset some subdirectory switches after a `dired-undo'.
915 You can reset all subdirectory switches to the default using
916 \\<dired-mode-map>\\[dired-reset-subdir-switches].
917 See Info node `(emacs)Subdir switches' for more details."
918 ;; Moves point if the next ARG files are redisplayed.
919 (interactive "P\np")
920 (if (and test-for-subdir (dired-get-subdir))
921 (let* ((dir (dired-get-subdir))
922 (switches (cdr (assoc-string dir dired-switches-alist))))
923 (dired-insert-subdir
925 (when arg
926 (read-string "Switches for listing: "
927 (or switches
928 dired-subdir-switches
929 dired-actual-switches)))))
930 (message "Redisplaying...")
931 ;; message much faster than making dired-map-over-marks show progress
932 (dired-uncache
933 (if (consp dired-directory) (car dired-directory) dired-directory))
934 (dired-map-over-marks (let ((fname (dired-get-filename)))
935 (message "Redisplaying... %s" fname)
936 (dired-update-file-line fname))
937 arg)
938 (dired-move-to-filename)
939 (message "Redisplaying...done")))
941 (defun dired-reset-subdir-switches ()
942 "Set `dired-switches-alist' to nil and revert dired buffer."
943 (interactive)
944 (setq dired-switches-alist nil)
945 (revert-buffer))
947 (defun dired-update-file-line (file)
948 ;; Delete the current line, and insert an entry for FILE.
949 ;; If FILE is nil, then just delete the current line.
950 ;; Keeps any marks that may be present in column one (doing this
951 ;; here is faster than with dired-add-entry's optional arg).
952 ;; Does not update other dired buffers. Use dired-relist-entry for that.
953 (beginning-of-line)
954 (let ((char (following-char)) (opoint (point))
955 (buffer-read-only))
956 (delete-region (point) (progn (forward-line 1) (point)))
957 (if file
958 (progn
959 (dired-add-entry file nil t)
960 ;; Replace space by old marker without moving point.
961 ;; Faster than goto+insdel inside a save-excursion?
962 (subst-char-in-region opoint (1+ opoint) ?\040 char))))
963 (dired-move-to-filename))
965 ;;;###autoload
966 (defun dired-add-file (filename &optional marker-char)
967 (dired-fun-in-all-buffers
968 (file-name-directory filename) (file-name-nondirectory filename)
969 (function dired-add-entry) filename marker-char))
971 (defun dired-add-entry (filename &optional marker-char relative)
972 ;; Add a new entry for FILENAME, optionally marking it
973 ;; with MARKER-CHAR (a character, else dired-marker-char is used).
974 ;; Note that this adds the entry `out of order' if files sorted by
975 ;; time, etc.
976 ;; At least this version inserts in the right subdirectory (if present).
977 ;; And it skips "." or ".." (see `dired-trivial-filenames').
978 ;; Hidden subdirs are exposed if a file is added there.
979 (setq filename (directory-file-name filename))
980 ;; Entry is always for files, even if they happen to also be directories
981 (let* ((opoint (point))
982 (cur-dir (dired-current-directory))
983 (orig-file-name filename)
984 (directory (if relative cur-dir (file-name-directory filename)))
985 reason)
986 (setq filename
987 (if relative
988 (file-relative-name filename directory)
989 (file-name-nondirectory filename))
990 reason
991 (catch 'not-found
992 (if (string= directory cur-dir)
993 (progn
994 (skip-chars-forward "^\r\n")
995 (if (eq (following-char) ?\r)
996 (dired-unhide-subdir))
997 ;; We are already where we should be, except when
998 ;; point is before the subdir line or its total line.
999 (let ((p (dired-after-subdir-garbage cur-dir)))
1000 (if (< (point) p)
1001 (goto-char p))))
1002 ;; else try to find correct place to insert
1003 (if (dired-goto-subdir directory)
1004 (progn ;; unhide if necessary
1005 (if (looking-at "\r") ;; point is at end of subdir line
1006 (dired-unhide-subdir))
1007 ;; found - skip subdir and `total' line
1008 ;; and uninteresting files like . and ..
1009 ;; This better not moves into the next subdir!
1010 (dired-goto-next-nontrivial-file))
1011 ;; not found
1012 (throw 'not-found "Subdir not found")))
1013 (let (buffer-read-only opoint)
1014 (beginning-of-line)
1015 (setq opoint (point))
1016 ;; Don't expand `.'. Show just the file name within directory.
1017 (let ((default-directory directory))
1018 (dired-insert-directory directory
1019 (concat dired-actual-switches "d")
1020 (list filename)))
1021 (goto-char opoint)
1022 ;; Put in desired marker char.
1023 (when marker-char
1024 (let ((dired-marker-char
1025 (if (integerp marker-char) marker-char dired-marker-char)))
1026 (dired-mark nil)))
1027 ;; Compensate for a bug in ange-ftp.
1028 ;; It inserts the file's absolute name, rather than
1029 ;; the relative one. That may be hard to fix since it
1030 ;; is probably controlled by something in ftp.
1031 (goto-char opoint)
1032 (let ((inserted-name (dired-get-filename 'verbatim)))
1033 (if (file-name-directory inserted-name)
1034 (let (props)
1035 (end-of-line)
1036 (forward-char (- (length inserted-name)))
1037 (setq props (text-properties-at (point)))
1038 (delete-char (length inserted-name))
1039 (let ((pt (point)))
1040 (insert filename)
1041 (set-text-properties pt (point) props))
1042 (forward-char 1))
1043 (forward-line 1)))
1044 (forward-line -1)
1045 (if dired-after-readin-hook ;; the subdir-alist is not affected...
1046 (save-excursion ;; ...so we can run it right now:
1047 (save-restriction
1048 (beginning-of-line)
1049 (narrow-to-region (point) (save-excursion
1050 (forward-line 1) (point)))
1051 (run-hooks 'dired-after-readin-hook))))
1052 (dired-move-to-filename))
1053 ;; return nil if all went well
1054 nil))
1055 (if reason ; don't move away on failure
1056 (goto-char opoint))
1057 (not reason))) ; return t on success, nil else
1059 (defun dired-after-subdir-garbage (dir)
1060 ;; Return pos of first file line of DIR, skipping header and total
1061 ;; or wildcard lines.
1062 ;; Important: never moves into the next subdir.
1063 ;; DIR is assumed to be unhidden.
1064 ;; Will probably be redefined for VMS etc.
1065 (save-excursion
1066 (or (dired-goto-subdir dir) (error "This cannot happen"))
1067 (forward-line 1)
1068 (while (and (not (eolp)) ; don't cross subdir boundary
1069 (not (dired-move-to-filename)))
1070 (forward-line 1))
1071 (point)))
1073 ;;;###autoload
1074 (defun dired-remove-file (file)
1075 (dired-fun-in-all-buffers
1076 (file-name-directory file) (file-name-nondirectory file)
1077 (function dired-remove-entry) file))
1079 (defun dired-remove-entry (file)
1080 (save-excursion
1081 (and (dired-goto-file file)
1082 (let (buffer-read-only)
1083 (delete-region (progn (beginning-of-line) (point))
1084 (save-excursion (forward-line 1) (point)))))))
1086 ;;;###autoload
1087 (defun dired-relist-file (file)
1088 "Create or update the line for FILE in all Dired buffers it would belong in."
1089 (dired-fun-in-all-buffers (file-name-directory file)
1090 (file-name-nondirectory file)
1091 (function dired-relist-entry) file))
1093 (defun dired-relist-entry (file)
1094 ;; Relist the line for FILE, or just add it if it did not exist.
1095 ;; FILE must be an absolute file name.
1096 (let (buffer-read-only marker)
1097 ;; If cursor is already on FILE's line delete-region will cause
1098 ;; save-excursion to fail because of floating makers,
1099 ;; moving point to beginning of line. Sigh.
1100 (save-excursion
1101 (and (dired-goto-file file)
1102 (delete-region (progn (beginning-of-line)
1103 (setq marker (following-char))
1104 (point))
1105 (save-excursion (forward-line 1) (point))))
1106 (setq file (directory-file-name file))
1107 (dired-add-entry file (if (eq ?\040 marker) nil marker)))))
1109 ;;; Copy, move/rename, making hard and symbolic links
1111 (defcustom dired-backup-overwrite nil
1112 "*Non-nil if Dired should ask about making backups before overwriting files.
1113 Special value `always' suppresses confirmation."
1114 :type '(choice (const :tag "off" nil)
1115 (const :tag "suppress" always)
1116 (other :tag "ask" t))
1117 :group 'dired)
1119 (defvar dired-overwrite-confirmed)
1121 (defun dired-handle-overwrite (to)
1122 ;; Save old version of file TO that is to be overwritten.
1123 ;; `dired-overwrite-confirmed' and `overwrite-backup-query' are fluid vars
1124 ;; from dired-create-files.
1125 (let (backup)
1126 (if (and dired-backup-overwrite
1127 dired-overwrite-confirmed
1128 (setq backup (car (find-backup-file-name to)))
1129 (or (eq 'always dired-backup-overwrite)
1130 (dired-query 'overwrite-backup-query
1131 "Make backup for existing file `%s'? "
1132 to)))
1133 (progn
1134 (rename-file to backup 0) ; confirm overwrite of old backup
1135 (dired-relist-entry backup)))))
1137 ;;;###autoload
1138 (defun dired-copy-file (from to ok-flag)
1139 (dired-handle-overwrite to)
1140 (dired-copy-file-recursive from to ok-flag dired-copy-preserve-time t
1141 dired-recursive-copies))
1143 (defun dired-copy-file-recursive (from to ok-flag &optional
1144 preserve-time top recursive)
1145 (let ((attrs (file-attributes from))
1146 dirfailed)
1147 (if (and recursive
1148 (eq t (car attrs))
1149 (or (eq recursive 'always)
1150 (yes-or-no-p (format "Recursive copies of %s? " from))))
1151 ;; This is a directory.
1152 (let ((files
1153 (condition-case err
1154 (directory-files from nil dired-re-no-dot)
1155 (file-error
1156 (push (dired-make-relative from)
1157 dired-create-files-failures)
1158 (dired-log "Copying error for %s:\n%s\n" from err)
1159 (setq dirfailed t)
1160 nil))))
1161 (if (eq recursive 'top) (setq recursive 'always)) ; Don't ask any more.
1162 (unless dirfailed
1163 (if (file-exists-p to)
1164 (or top (dired-handle-overwrite to))
1165 (condition-case err
1166 (make-directory to)
1167 (file-error
1168 (push (dired-make-relative from)
1169 dired-create-files-failures)
1170 (setq files nil)
1171 (dired-log "Copying error for %s:\n%s\n" from err)))))
1172 (dolist (file files)
1173 (let ((thisfrom (expand-file-name file from))
1174 (thisto (expand-file-name file to)))
1175 ;; Catch errors copying within a directory,
1176 ;; and report them through the dired log mechanism
1177 ;; just as our caller will do for the top level files.
1178 (condition-case err
1179 (dired-copy-file-recursive
1180 thisfrom thisto
1181 ok-flag preserve-time nil recursive)
1182 (file-error
1183 (push (dired-make-relative thisfrom)
1184 dired-create-files-failures)
1185 (dired-log "Copying error for %s:\n%s\n" thisfrom err))))))
1186 ;; Not a directory.
1187 (or top (dired-handle-overwrite to))
1188 (condition-case err
1189 (if (stringp (car attrs))
1190 ;; It is a symlink
1191 (make-symbolic-link (car attrs) to ok-flag)
1192 (copy-file from to ok-flag dired-copy-preserve-time))
1193 (file-date-error
1194 (push (dired-make-relative from)
1195 dired-create-files-failures)
1196 (dired-log "Can't set date on %s:\n%s\n" from err))))))
1198 ;;;###autoload
1199 (defun dired-rename-file (file newname ok-if-already-exists)
1200 (dired-handle-overwrite newname)
1201 (rename-file file newname ok-if-already-exists) ; error is caught in -create-files
1202 ;; Silently rename the visited file of any buffer visiting this file.
1203 (and (get-file-buffer file)
1204 (with-current-buffer (get-file-buffer file)
1205 (set-visited-file-name newname nil t)))
1206 (dired-remove-file file)
1207 ;; See if it's an inserted subdir, and rename that, too.
1208 (dired-rename-subdir file newname))
1210 (defun dired-rename-subdir (from-dir to-dir)
1211 (setq from-dir (file-name-as-directory from-dir)
1212 to-dir (file-name-as-directory to-dir))
1213 (dired-fun-in-all-buffers from-dir nil
1214 (function dired-rename-subdir-1) from-dir to-dir)
1215 ;; Update visited file name of all affected buffers
1216 (let ((expanded-from-dir (expand-file-name from-dir))
1217 (blist (buffer-list)))
1218 (while blist
1219 (save-excursion
1220 (set-buffer (car blist))
1221 (if (and buffer-file-name
1222 (dired-in-this-tree buffer-file-name expanded-from-dir))
1223 (let ((modflag (buffer-modified-p))
1224 (to-file (dired-replace-in-string
1225 (concat "^" (regexp-quote from-dir))
1226 to-dir
1227 buffer-file-name)))
1228 (set-visited-file-name to-file)
1229 (set-buffer-modified-p modflag))))
1230 (setq blist (cdr blist)))))
1232 (defun dired-rename-subdir-1 (dir to)
1233 ;; Rename DIR to TO in headerlines and dired-subdir-alist, if DIR or
1234 ;; one of its subdirectories is expanded in this buffer.
1235 (let ((expanded-dir (expand-file-name dir))
1236 (alist dired-subdir-alist)
1237 (elt nil))
1238 (while alist
1239 (setq elt (car alist)
1240 alist (cdr alist))
1241 (if (dired-in-this-tree (car elt) expanded-dir)
1242 ;; ELT's subdir is affected by the rename
1243 (dired-rename-subdir-2 elt dir to)))
1244 (if (equal dir default-directory)
1245 ;; if top level directory was renamed, lots of things have to be
1246 ;; updated:
1247 (progn
1248 (dired-unadvertise dir) ; we no longer dired DIR...
1249 (setq default-directory to
1250 dired-directory (expand-file-name;; this is correct
1251 ;; with and without wildcards
1252 (file-name-nondirectory dired-directory)
1253 to))
1254 (let ((new-name (file-name-nondirectory
1255 (directory-file-name dired-directory))))
1256 ;; try to rename buffer, but just leave old name if new
1257 ;; name would already exist (don't try appending "<%d>")
1258 (or (get-buffer new-name)
1259 (rename-buffer new-name)))
1260 ;; ... we dired TO now:
1261 (dired-advertise)))))
1263 (defun dired-rename-subdir-2 (elt dir to)
1264 ;; Update the headerline and dired-subdir-alist element, as well as
1265 ;; dired-switches-alist element, of directory described by
1266 ;; alist-element ELT to reflect the moving of DIR to TO. Thus, ELT
1267 ;; describes either DIR itself or a subdir of DIR.
1268 (save-excursion
1269 (let ((regexp (regexp-quote (directory-file-name dir)))
1270 (newtext (directory-file-name to))
1271 buffer-read-only)
1272 (goto-char (dired-get-subdir-min elt))
1273 ;; Update subdir headerline in buffer
1274 (if (not (looking-at dired-subdir-regexp))
1275 (error "%s not found where expected - dired-subdir-alist broken?"
1276 dir)
1277 (goto-char (match-beginning 1))
1278 (if (re-search-forward regexp (match-end 1) t)
1279 (replace-match newtext t t)
1280 (error "Expected to find `%s' in headerline of %s" dir (car elt))))
1281 ;; Update buffer-local dired-subdir-alist and dired-switches-alist
1282 (let ((cons (assoc-string (car elt) dired-switches-alist))
1283 (cur-dir (dired-normalize-subdir
1284 (dired-replace-in-string regexp newtext (car elt)))))
1285 (setcar elt cur-dir)
1286 (when cons (setcar cons cur-dir))))))
1288 ;; The basic function for half a dozen variations on cp/mv/ln/ln -s.
1289 (defun dired-create-files (file-creator operation fn-list name-constructor
1290 &optional marker-char)
1292 ;; Create a new file for each from a list of existing files. The user
1293 ;; is queried, dired buffers are updated, and at the end a success or
1294 ;; failure message is displayed
1296 ;; FILE-CREATOR must accept three args: oldfile newfile ok-if-already-exists
1298 ;; It is called for each file and must create newfile, the entry of
1299 ;; which will be added. The user will be queried if the file already
1300 ;; exists. If oldfile is removed by FILE-CREATOR (i.e, it is a
1301 ;; rename), it is FILE-CREATOR's responsibility to update dired
1302 ;; buffers. FILE-CREATOR must abort by signaling a file-error if it
1303 ;; could not create newfile. The error is caught and logged.
1305 ;; OPERATION (a capitalized string, e.g. `Copy') describes the
1306 ;; operation performed. It is used for error logging.
1308 ;; FN-LIST is the list of files to copy (full absolute file names).
1310 ;; NAME-CONSTRUCTOR returns a newfile for every oldfile, or nil to
1311 ;; skip. If it skips files for other reasons than a direct user
1312 ;; query, it is supposed to tell why (using dired-log).
1314 ;; Optional MARKER-CHAR is a character with which to mark every
1315 ;; newfile's entry, or t to use the current marker character if the
1316 ;; oldfile was marked.
1318 (let (dired-create-files-failures failures
1319 skipped (success-count 0) (total (length fn-list)))
1320 (let (to overwrite-query
1321 overwrite-backup-query) ; for dired-handle-overwrite
1322 (mapcar
1323 (function
1324 (lambda (from)
1325 (setq to (funcall name-constructor from))
1326 (if (equal to from)
1327 (progn
1328 (setq to nil)
1329 (dired-log "Cannot %s to same file: %s\n"
1330 (downcase operation) from)))
1331 (if (not to)
1332 (setq skipped (cons (dired-make-relative from) skipped))
1333 (let* ((overwrite (file-exists-p to))
1334 (dired-overwrite-confirmed ; for dired-handle-overwrite
1335 (and overwrite
1336 (let ((help-form '(format "\
1337 Type SPC or `y' to overwrite file `%s',
1338 DEL or `n' to skip to next,
1339 ESC or `q' to not overwrite any of the remaining files,
1340 `!' to overwrite all remaining files with no more questions." to)))
1341 (dired-query 'overwrite-query
1342 "Overwrite `%s'?" to))))
1343 ;; must determine if FROM is marked before file-creator
1344 ;; gets a chance to delete it (in case of a move).
1345 (actual-marker-char
1346 (cond ((integerp marker-char) marker-char)
1347 (marker-char (dired-file-marker from)) ; slow
1348 (t nil))))
1349 (condition-case err
1350 (progn
1351 (funcall file-creator from to dired-overwrite-confirmed)
1352 (if overwrite
1353 ;; If we get here, file-creator hasn't been aborted
1354 ;; and the old entry (if any) has to be deleted
1355 ;; before adding the new entry.
1356 (dired-remove-file to))
1357 (setq success-count (1+ success-count))
1358 (message "%s: %d of %d" operation success-count total)
1359 (dired-add-file to actual-marker-char))
1360 (file-error ; FILE-CREATOR aborted
1361 (progn
1362 (push (dired-make-relative from)
1363 failures)
1364 (dired-log "%s `%s' to `%s' failed:\n%s\n"
1365 operation from to err))))))))
1366 fn-list))
1367 (cond
1368 (dired-create-files-failures
1369 (setq failures (nconc failures dired-create-files-failures))
1370 (dired-log-summary
1371 (format "%s failed for %d file%s in %d requests"
1372 operation (length failures)
1373 (dired-plural-s (length failures))
1374 total)
1375 failures))
1376 (failures
1377 (dired-log-summary
1378 (format "%s failed for %d of %d file%s"
1379 operation (length failures)
1380 total (dired-plural-s total))
1381 failures))
1382 (skipped
1383 (dired-log-summary
1384 (format "%s: %d of %d file%s skipped"
1385 operation (length skipped) total
1386 (dired-plural-s total))
1387 skipped))
1389 (message "%s: %s file%s"
1390 operation success-count (dired-plural-s success-count)))))
1391 (dired-move-to-filename))
1393 (defun dired-do-create-files (op-symbol file-creator operation arg
1394 &optional marker-char op1
1395 how-to)
1396 "Create a new file for each marked file.
1397 Prompts user for target, which is a directory in which to create
1398 the new files. Target may be a plain file if only one marked
1399 file exists. The way the default for the target directory is
1400 computed depends on the value of `dired-dwim-target-directory'.
1401 OP-SYMBOL is the symbol for the operation. Function `dired-mark-pop-up'
1402 will determine whether pop-ups are appropriate for this OP-SYMBOL.
1403 FILE-CREATOR and OPERATION as in `dired-create-files'.
1404 ARG as in `dired-get-marked-files'.
1405 Optional arg MARKER-CHAR as in `dired-create-files'.
1406 Optional arg OP1 is an alternate form for OPERATION if there is
1407 only one file.
1408 Optional arg HOW-TO is used to set the value of the into-dir variable
1409 which determines how to treat target.
1410 If into-dir is set to nil then target is not regarded as a directory,
1411 there must be exactly one marked file, else error.
1412 Else if into-dir is set to a list, then target is a generalized
1413 directory (e.g. some sort of archive). The first element of into-dir
1414 must be a function with at least four arguments:
1415 operation as OPERATION above.
1416 rfn-list a list of the relative names for the marked files.
1417 fn-list a list of the absolute names for the marked files.
1418 target.
1419 The rest of into-dir are optional arguments.
1420 Else into-dir is not a list. Target is a directory.
1421 The marked file(s) are created inside the target directory.
1423 If HOW-TO is not given (or nil), then into-dir is set to true if
1424 target is a directory and otherwise to nil.
1425 Else if HOW-TO is t, then into-dir is set to nil.
1426 Else HOW-TO is assumed to be a function of one argument, target,
1427 that looks at target and returns a value for the into-dir
1428 variable. The function `dired-into-dir-with-symlinks' is provided
1429 for the case (common when creating symlinks) that symbolic
1430 links to directories are not to be considered as directories
1431 (as `file-directory-p' would if HOW-TO had been nil)."
1432 (or op1 (setq op1 operation))
1433 (let* ((fn-list (dired-get-marked-files nil arg))
1434 (rfn-list (mapcar (function dired-make-relative) fn-list))
1435 (dired-one-file ; fluid variable inside dired-create-files
1436 (and (consp fn-list) (null (cdr fn-list)) (car fn-list)))
1437 (target-dir (dired-dwim-target-directory))
1438 (default (and dired-one-file
1439 (expand-file-name (file-name-nondirectory (car fn-list))
1440 target-dir)))
1441 (target (expand-file-name ; fluid variable inside dired-create-files
1442 (dired-mark-read-file-name
1443 (concat (if dired-one-file op1 operation) " %s to: ")
1444 target-dir op-symbol arg rfn-list default)))
1445 (into-dir (cond ((null how-to)
1446 ;; Allow DOS/Windows users to change the letter
1447 ;; case of a directory. If we don't test these
1448 ;; conditions up front, file-directory-p below
1449 ;; will return t because the filesystem is
1450 ;; case-insensitive, and Emacs will try to move
1451 ;; foo -> foo/foo, which fails.
1452 (if (and (memq system-type '(ms-dos windows-nt cygwin))
1453 (eq op-symbol 'move)
1454 dired-one-file
1455 (string= (downcase
1456 (expand-file-name (car fn-list)))
1457 (downcase
1458 (expand-file-name target)))
1459 (not (string=
1460 (file-name-nondirectory (car fn-list))
1461 (file-name-nondirectory target))))
1463 (file-directory-p target)))
1464 ((eq how-to t) nil)
1465 (t (funcall how-to target)))))
1466 (if (and (consp into-dir) (functionp (car into-dir)))
1467 (apply (car into-dir) operation rfn-list fn-list target (cdr into-dir))
1468 (if (not (or dired-one-file into-dir))
1469 (error "Marked %s: target must be a directory: %s" operation target))
1470 ;; rename-file bombs when moving directories unless we do this:
1471 (or into-dir (setq target (directory-file-name target)))
1472 (dired-create-files
1473 file-creator operation fn-list
1474 (if into-dir ; target is a directory
1475 ;; This function uses fluid variable target when called
1476 ;; inside dired-create-files:
1477 (function
1478 (lambda (from)
1479 (expand-file-name (file-name-nondirectory from) target)))
1480 (function (lambda (from) target)))
1481 marker-char))))
1483 ;; Read arguments for a marked-files command that wants a file name,
1484 ;; perhaps popping up the list of marked files.
1485 ;; ARG is the prefix arg and indicates whether the files came from
1486 ;; marks (ARG=nil) or a repeat factor (integerp ARG).
1487 ;; If the current file was used, the list has but one element and ARG
1488 ;; does not matter. (It is non-nil, non-integer in that case, namely '(4)).
1489 ;; DEFAULT is the default value to return if the user just hits RET;
1490 ;; if it is omitted or nil, then the name of the directory is used.
1492 (defun dired-mark-read-file-name (prompt dir op-symbol arg files
1493 &optional default)
1494 (dired-mark-pop-up
1495 nil op-symbol files
1496 (function read-file-name)
1497 (format prompt (dired-mark-prompt arg files)) dir default))
1499 (defun dired-dwim-target-directory ()
1500 ;; Try to guess which target directory the user may want.
1501 ;; If there is a dired buffer displayed in the next window, use
1502 ;; its current subdir, else use current subdir of this dired buffer.
1503 (let ((this-dir (and (eq major-mode 'dired-mode)
1504 (dired-current-directory))))
1505 ;; non-dired buffer may want to profit from this function, e.g. vm-uudecode
1506 (if dired-dwim-target
1507 (let* ((other-buf (window-buffer (next-window)))
1508 (other-dir (save-excursion
1509 (set-buffer other-buf)
1510 (and (eq major-mode 'dired-mode)
1511 (dired-current-directory)))))
1512 (or other-dir this-dir))
1513 this-dir)))
1515 ;;;###autoload
1516 (defun dired-create-directory (directory)
1517 "Create a directory called DIRECTORY."
1518 (interactive
1519 (list (read-file-name "Create directory: " (dired-current-directory))))
1520 (let ((expanded (directory-file-name (expand-file-name directory))))
1521 (make-directory expanded)
1522 (dired-add-file expanded)
1523 (dired-move-to-filename)))
1525 (defun dired-into-dir-with-symlinks (target)
1526 (and (file-directory-p target)
1527 (not (file-symlink-p target))))
1528 ;; This may not always be what you want, especially if target is your
1529 ;; home directory and it happens to be a symbolic link, as is often the
1530 ;; case with NFS and automounters. Or if you want to make symlinks
1531 ;; into directories that themselves are only symlinks, also quite
1532 ;; common.
1534 ;; So we don't use this function as value for HOW-TO in
1535 ;; dired-do-symlink, which has the minor disadvantage of
1536 ;; making links *into* a symlinked-dir, when you really wanted to
1537 ;; *overwrite* that symlink. In that (rare, I guess) case, you'll
1538 ;; just have to remove that symlink by hand before making your marked
1539 ;; symlinks.
1541 (defvar dired-copy-how-to-fn nil
1542 "nil or a function used by `dired-do-copy' to determine target.
1543 See HOW-TO argument for `dired-do-create-files'.")
1545 ;;;###autoload
1546 (defun dired-do-copy (&optional arg)
1547 "Copy all marked (or next ARG) files, or copy the current file.
1548 This normally preserves the last-modified date when copying.
1549 When operating on just the current file, you specify the new name.
1550 When operating on multiple or marked files, you specify a directory,
1551 and new copies of these files are made in that directory
1552 with the same names that the files currently have. The default
1553 suggested for the target directory depends on the value of
1554 `dired-dwim-target', which see.
1556 This command copies symbolic links by creating new ones,
1557 like `cp -d'."
1558 (interactive "P")
1559 (let ((dired-recursive-copies dired-recursive-copies))
1560 (dired-do-create-files 'copy (function dired-copy-file)
1561 "Copy"
1562 arg dired-keep-marker-copy
1563 nil dired-copy-how-to-fn)))
1565 ;;;###autoload
1566 (defun dired-do-symlink (&optional arg)
1567 "Make symbolic links to current file or all marked (or next ARG) files.
1568 When operating on just the current file, you specify the new name.
1569 When operating on multiple or marked files, you specify a directory
1570 and new symbolic links are made in that directory
1571 with the same names that the files currently have. The default
1572 suggested for the target directory depends on the value of
1573 `dired-dwim-target', which see.
1575 For relative symlinks, use \\[dired-do-relsymlink]."
1576 (interactive "P")
1577 (dired-do-create-files 'symlink (function make-symbolic-link)
1578 "Symlink" arg dired-keep-marker-symlink))
1580 ;;;###autoload
1581 (defun dired-do-hardlink (&optional arg)
1582 "Add names (hard links) current file or all marked (or next ARG) files.
1583 When operating on just the current file, you specify the new name.
1584 When operating on multiple or marked files, you specify a directory
1585 and new hard links are made in that directory
1586 with the same names that the files currently have. The default
1587 suggested for the target directory depends on the value of
1588 `dired-dwim-target', which see."
1589 (interactive "P")
1590 (dired-do-create-files 'hardlink (function dired-hardlink)
1591 "Hardlink" arg dired-keep-marker-hardlink))
1593 (defun dired-hardlink (file newname &optional ok-if-already-exists)
1594 (dired-handle-overwrite newname)
1595 ;; error is caught in -create-files
1596 (add-name-to-file file newname ok-if-already-exists)
1597 ;; Update the link count
1598 (dired-relist-file file))
1600 ;;;###autoload
1601 (defun dired-do-rename (&optional arg)
1602 "Rename current file or all marked (or next ARG) files.
1603 When renaming just the current file, you specify the new name.
1604 When renaming multiple or marked files, you specify a directory.
1605 This command also renames any buffers that are visiting the files.
1606 The default suggested for the target directory depends on the value
1607 of `dired-dwim-target', which see."
1608 (interactive "P")
1609 (dired-do-create-files 'move (function dired-rename-file)
1610 "Move" arg dired-keep-marker-rename "Rename"))
1611 ;;;###end dired-cp.el
1613 ;;; 5K
1614 ;;;###begin dired-re.el
1615 (defun dired-do-create-files-regexp
1616 (file-creator operation arg regexp newname &optional whole-name marker-char)
1617 ;; Create a new file for each marked file using regexps.
1618 ;; FILE-CREATOR and OPERATION as in dired-create-files.
1619 ;; ARG as in dired-get-marked-files.
1620 ;; Matches each marked file against REGEXP and constructs the new
1621 ;; filename from NEWNAME (like in function replace-match).
1622 ;; Optional arg WHOLE-NAME means match/replace the whole file name
1623 ;; instead of only the non-directory part of the file.
1624 ;; Optional arg MARKER-CHAR as in dired-create-files.
1625 (let* ((fn-list (dired-get-marked-files nil arg))
1626 (fn-count (length fn-list))
1627 (operation-prompt (concat operation " `%s' to `%s'?"))
1628 (rename-regexp-help-form (format "\
1629 Type SPC or `y' to %s one match, DEL or `n' to skip to next,
1630 `!' to %s all remaining matches with no more questions."
1631 (downcase operation)
1632 (downcase operation)))
1633 (regexp-name-constructor
1634 ;; Function to construct new filename using REGEXP and NEWNAME:
1635 (if whole-name ; easy (but rare) case
1636 (function
1637 (lambda (from)
1638 (let ((to (dired-string-replace-match regexp from newname))
1639 ;; must bind help-form directly around call to
1640 ;; dired-query
1641 (help-form rename-regexp-help-form))
1642 (if to
1643 (and (dired-query 'rename-regexp-query
1644 operation-prompt
1645 from
1648 (dired-log "%s: %s did not match regexp %s\n"
1649 operation from regexp)))))
1650 ;; not whole-name, replace non-directory part only
1651 (function
1652 (lambda (from)
1653 (let* ((new (dired-string-replace-match
1654 regexp (file-name-nondirectory from) newname))
1655 (to (and new ; nil means there was no match
1656 (expand-file-name new
1657 (file-name-directory from))))
1658 (help-form rename-regexp-help-form))
1659 (if to
1660 (and (dired-query 'rename-regexp-query
1661 operation-prompt
1662 (dired-make-relative from)
1663 (dired-make-relative to))
1665 (dired-log "%s: %s did not match regexp %s\n"
1666 operation (file-name-nondirectory from) regexp)))))))
1667 rename-regexp-query)
1668 (dired-create-files
1669 file-creator operation fn-list regexp-name-constructor marker-char)))
1671 (defun dired-mark-read-regexp (operation)
1672 ;; Prompt user about performing OPERATION.
1673 ;; Read and return list of: regexp newname arg whole-name.
1674 (let* ((whole-name
1675 (equal 0 (prefix-numeric-value current-prefix-arg)))
1676 (arg
1677 (if whole-name nil current-prefix-arg))
1678 (regexp
1679 (dired-read-regexp
1680 (concat (if whole-name "Abs. " "") operation " from (regexp): ")))
1681 (newname
1682 (read-string
1683 (concat (if whole-name "Abs. " "") operation " " regexp " to: "))))
1684 (list regexp newname arg whole-name)))
1686 ;;;###autoload
1687 (defun dired-do-rename-regexp (regexp newname &optional arg whole-name)
1688 "Rename selected files whose names match REGEXP to NEWNAME.
1690 With non-zero prefix argument ARG, the command operates on the next ARG
1691 files. Otherwise, it operates on all the marked files, or the current
1692 file if none are marked.
1694 As each match is found, the user must type a character saying
1695 what to do with it. For directions, type \\[help-command] at that time.
1696 NEWNAME may contain \\=\\<n> or \\& as in `query-replace-regexp'.
1697 REGEXP defaults to the last regexp used.
1699 With a zero prefix arg, renaming by regexp affects the absolute file name.
1700 Normally, only the non-directory part of the file name is used and changed."
1701 (interactive (dired-mark-read-regexp "Rename"))
1702 (dired-do-create-files-regexp
1703 (function dired-rename-file)
1704 "Rename" arg regexp newname whole-name dired-keep-marker-rename))
1706 ;;;###autoload
1707 (defun dired-do-copy-regexp (regexp newname &optional arg whole-name)
1708 "Copy selected files whose names match REGEXP to NEWNAME.
1709 See function `dired-do-rename-regexp' for more info."
1710 (interactive (dired-mark-read-regexp "Copy"))
1711 (let ((dired-recursive-copies nil)) ; No recursive copies.
1712 (dired-do-create-files-regexp
1713 (function dired-copy-file)
1714 (if dired-copy-preserve-time "Copy [-p]" "Copy")
1715 arg regexp newname whole-name dired-keep-marker-copy)))
1717 ;;;###autoload
1718 (defun dired-do-hardlink-regexp (regexp newname &optional arg whole-name)
1719 "Hardlink selected files whose names match REGEXP to NEWNAME.
1720 See function `dired-do-rename-regexp' for more info."
1721 (interactive (dired-mark-read-regexp "HardLink"))
1722 (dired-do-create-files-regexp
1723 (function add-name-to-file)
1724 "HardLink" arg regexp newname whole-name dired-keep-marker-hardlink))
1726 ;;;###autoload
1727 (defun dired-do-symlink-regexp (regexp newname &optional arg whole-name)
1728 "Symlink selected files whose names match REGEXP to NEWNAME.
1729 See function `dired-do-rename-regexp' for more info."
1730 (interactive (dired-mark-read-regexp "SymLink"))
1731 (dired-do-create-files-regexp
1732 (function make-symbolic-link)
1733 "SymLink" arg regexp newname whole-name dired-keep-marker-symlink))
1735 (defun dired-create-files-non-directory
1736 (file-creator basename-constructor operation arg)
1737 ;; Perform FILE-CREATOR on the non-directory part of marked files
1738 ;; using function BASENAME-CONSTRUCTOR, with query for each file.
1739 ;; OPERATION like in dired-create-files, ARG as in dired-get-marked-files.
1740 (let (rename-non-directory-query)
1741 (dired-create-files
1742 file-creator
1743 operation
1744 (dired-get-marked-files nil arg)
1745 (function
1746 (lambda (from)
1747 (let ((to (concat (file-name-directory from)
1748 (funcall basename-constructor
1749 (file-name-nondirectory from)))))
1750 (and (let ((help-form (format "\
1751 Type SPC or `y' to %s one file, DEL or `n' to skip to next,
1752 `!' to %s all remaining matches with no more questions."
1753 (downcase operation)
1754 (downcase operation))))
1755 (dired-query 'rename-non-directory-query
1756 (concat operation " `%s' to `%s'")
1757 (dired-make-relative from)
1758 (dired-make-relative to)))
1759 to))))
1760 dired-keep-marker-rename)))
1762 (defun dired-rename-non-directory (basename-constructor operation arg)
1763 (dired-create-files-non-directory
1764 (function dired-rename-file)
1765 basename-constructor operation arg))
1767 ;;;###autoload
1768 (defun dired-upcase (&optional arg)
1769 "Rename all marked (or next ARG) files to upper case."
1770 (interactive "P")
1771 (dired-rename-non-directory (function upcase) "Rename upcase" arg))
1773 ;;;###autoload
1774 (defun dired-downcase (&optional arg)
1775 "Rename all marked (or next ARG) files to lower case."
1776 (interactive "P")
1777 (dired-rename-non-directory (function downcase) "Rename downcase" arg))
1779 ;;;###end dired-re.el
1781 ;;; 13K
1782 ;;;###begin dired-ins.el
1784 ;;;###autoload
1785 (defun dired-maybe-insert-subdir (dirname &optional
1786 switches no-error-if-not-dir-p)
1787 "Insert this subdirectory into the same dired buffer.
1788 If it is already present, just move to it (type \\[dired-do-redisplay] to refresh),
1789 else inserts it at its natural place (as `ls -lR' would have done).
1790 With a prefix arg, you may edit the ls switches used for this listing.
1791 You can add `R' to the switches to expand the whole tree starting at
1792 this subdirectory.
1793 This function takes some pains to conform to `ls -lR' output.
1795 Dired remembers switches specified with a prefix arg, so that reverting
1796 the buffer will not reset them. However, using `dired-undo' to re-insert
1797 or delete subdirectories can bypass this machinery. Hence, you sometimes
1798 may have to reset some subdirectory switches after a `dired-undo'.
1799 You can reset all subdirectory switches to the default using
1800 \\<dired-mode-map>\\[dired-reset-subdir-switches].
1801 See Info node `(emacs)Subdir switches' for more details."
1802 (interactive
1803 (list (dired-get-filename)
1804 (if current-prefix-arg
1805 (read-string "Switches for listing: "
1806 (or dired-subdir-switches dired-actual-switches)))))
1807 (let ((opoint (point)))
1808 ;; We don't need a marker for opoint as the subdir is always
1809 ;; inserted *after* opoint.
1810 (setq dirname (file-name-as-directory dirname))
1811 (or (and (not switches)
1812 (dired-goto-subdir dirname))
1813 (dired-insert-subdir dirname switches no-error-if-not-dir-p))
1814 ;; Push mark so that it's easy to find back. Do this after the
1815 ;; insert message so that the user sees the `Mark set' message.
1816 (push-mark opoint)))
1818 ;;;###autoload
1819 (defun dired-insert-subdir (dirname &optional switches no-error-if-not-dir-p)
1820 "Insert this subdirectory into the same dired buffer.
1821 If it is already present, overwrites previous entry,
1822 else inserts it at its natural place (as `ls -lR' would have done).
1823 With a prefix arg, you may edit the `ls' switches used for this listing.
1824 You can add `R' to the switches to expand the whole tree starting at
1825 this subdirectory.
1826 This function takes some pains to conform to `ls -lR' output."
1827 ;; NO-ERROR-IF-NOT-DIR-P needed for special filesystems like
1828 ;; Prospero where dired-ls does the right thing, but
1829 ;; file-directory-p has not been redefined.
1830 (interactive
1831 (list (dired-get-filename)
1832 (if current-prefix-arg
1833 (read-string "Switches for listing: "
1834 (or dired-subdir-switches dired-actual-switches)))))
1835 (setq dirname (file-name-as-directory (expand-file-name dirname)))
1836 (or no-error-if-not-dir-p
1837 (file-directory-p dirname)
1838 (error "Attempt to insert a non-directory: %s" dirname))
1839 (let ((elt (assoc dirname dired-subdir-alist))
1840 (cons (assoc-string dirname dired-switches-alist))
1841 (modflag (buffer-modified-p))
1842 (old-switches switches)
1843 switches-have-R mark-alist case-fold-search buffer-read-only)
1844 (and (not switches) cons (setq switches (cdr cons)))
1845 (dired-insert-subdir-validate dirname switches)
1846 ;; case-fold-search is nil now, so we can test for capital `R':
1847 (if (setq switches-have-R (and switches (string-match "R" switches)))
1848 ;; avoid duplicated subdirs
1849 (setq mark-alist (dired-kill-tree dirname t)))
1850 (if elt
1851 ;; If subdir is already present, remove it and remember its marks
1852 (setq mark-alist (nconc (dired-insert-subdir-del elt) mark-alist))
1853 (dired-insert-subdir-newpos dirname)) ; else compute new position
1854 (dired-insert-subdir-doupdate
1855 dirname elt (dired-insert-subdir-doinsert dirname switches))
1856 (when old-switches
1857 (if cons
1858 (setcdr cons switches)
1859 (push (cons dirname switches) dired-switches-alist)))
1860 (when switches-have-R
1861 (dired-build-subdir-alist switches)
1862 (setq switches (dired-replace-in-string "R" "" switches))
1863 (dolist (cur-ass dired-subdir-alist)
1864 (let ((cur-dir (car cur-ass)))
1865 (and (dired-in-this-tree cur-dir dirname)
1866 (let ((cur-cons (assoc-string cur-dir dired-switches-alist)))
1867 (if cur-cons
1868 (setcdr cur-cons switches)
1869 (push (cons cur-dir switches) dired-switches-alist)))))))
1870 (dired-initial-position dirname)
1871 (save-excursion (dired-mark-remembered mark-alist))
1872 (restore-buffer-modified-p modflag)))
1874 ;; This is a separate function for dired-vms.
1875 (defun dired-insert-subdir-validate (dirname &optional switches)
1876 ;; Check that it is valid to insert DIRNAME with SWITCHES.
1877 ;; Signal an error if invalid (e.g. user typed `i' on `..').
1878 (or (dired-in-this-tree dirname (expand-file-name default-directory))
1879 (error "%s: not in this directory tree" dirname))
1880 (let ((real-switches (or switches dired-subdir-switches)))
1881 (when real-switches
1882 (let (case-fold-search)
1883 (mapcar
1884 (function
1885 (lambda (x)
1886 (or (eq (null (string-match x real-switches))
1887 (null (string-match x dired-actual-switches)))
1888 (error
1889 "Can't have dirs with and without -%s switches together" x))))
1890 ;; all switches that make a difference to dired-get-filename:
1891 '("F" "b"))))))
1893 (defun dired-alist-add (dir new-marker)
1894 ;; Add new DIR at NEW-MARKER. Sort alist.
1895 (dired-alist-add-1 dir new-marker)
1896 (dired-alist-sort))
1898 (defun dired-alist-sort ()
1899 ;; Keep the alist sorted on buffer position.
1900 (setq dired-subdir-alist
1901 (sort dired-subdir-alist
1902 (function (lambda (elt1 elt2)
1903 (> (dired-get-subdir-min elt1)
1904 (dired-get-subdir-min elt2)))))))
1906 (defun dired-kill-tree (dirname &optional remember-marks kill-root)
1907 "Kill all proper subdirs of DIRNAME, excluding DIRNAME itself.
1908 Interactively, you can kill DIRNAME as well by using a prefix argument.
1909 In interactive use, the command prompts for DIRNAME.
1911 When called from Lisp, if REMEMBER-MARKS is non-nil, return an alist
1912 of marked files. If KILL-ROOT is non-nil, kill DIRNAME as well."
1913 (interactive "DKill tree below directory: \ni\nP")
1914 (setq dirname (file-name-as-directory (expand-file-name dirname)))
1915 (let ((s-alist dired-subdir-alist) dir m-alist)
1916 (while s-alist
1917 (setq dir (car (car s-alist))
1918 s-alist (cdr s-alist))
1919 (and (or kill-root (not (string-equal dir dirname)))
1920 (dired-in-this-tree dir dirname)
1921 (dired-goto-subdir dir)
1922 (setq m-alist (nconc (dired-kill-subdir remember-marks) m-alist))))
1923 m-alist))
1925 (defun dired-insert-subdir-newpos (new-dir)
1926 ;; Find pos for new subdir, according to tree order.
1927 ;;(goto-char (point-max))
1928 (let ((alist dired-subdir-alist) elt dir pos new-pos)
1929 (while alist
1930 (setq elt (car alist)
1931 alist (cdr alist)
1932 dir (car elt)
1933 pos (dired-get-subdir-min elt))
1934 (if (dired-tree-lessp dir new-dir)
1935 ;; Insert NEW-DIR after DIR
1936 (setq new-pos (dired-get-subdir-max elt)
1937 alist nil)))
1938 (goto-char new-pos))
1939 ;; want a separating newline between subdirs
1940 (or (eobp)
1941 (forward-line -1))
1942 (insert "\n")
1943 (point))
1945 (defun dired-insert-subdir-del (element)
1946 ;; Erase an already present subdir (given by ELEMENT) from buffer.
1947 ;; Move to that buffer position. Return a mark-alist.
1948 (let ((begin-marker (dired-get-subdir-min element)))
1949 (goto-char begin-marker)
1950 ;; Are at beginning of subdir (and inside it!). Now determine its end:
1951 (goto-char (dired-subdir-max))
1952 (or (eobp);; want a separating newline _between_ subdirs:
1953 (forward-char -1))
1954 (prog1
1955 (dired-remember-marks begin-marker (point))
1956 (delete-region begin-marker (point)))))
1958 (defun dired-insert-subdir-doinsert (dirname switches)
1959 ;; Insert ls output after point.
1960 ;; Return the boundary of the inserted text (as list of BEG and END).
1961 (save-excursion
1962 (let ((begin (point)))
1963 (let ((dired-actual-switches
1964 (or switches
1965 dired-subdir-switches
1966 (dired-replace-in-string "R" "" dired-actual-switches))))
1967 (if (equal dirname (car (car (last dired-subdir-alist))))
1968 ;; If doing the top level directory of the buffer,
1969 ;; redo it as specified in dired-directory.
1970 (dired-readin-insert)
1971 (dired-insert-directory dirname dired-actual-switches nil nil t)))
1972 (list begin (point)))))
1974 (defun dired-insert-subdir-doupdate (dirname elt beg-end)
1975 ;; Point is at the correct subdir alist position for ELT,
1976 ;; BEG-END is the subdir-region (as list of begin and end).
1977 (if elt ; subdir was already present
1978 ;; update its position (should actually be unchanged)
1979 (set-marker (dired-get-subdir-min elt) (point-marker))
1980 (dired-alist-add dirname (point-marker)))
1981 ;; The hook may depend on the subdir-alist containing the just
1982 ;; inserted subdir, so run it after dired-alist-add:
1983 (if dired-after-readin-hook
1984 (save-excursion
1985 (let ((begin (nth 0 beg-end))
1986 (end (nth 1 beg-end)))
1987 (goto-char begin)
1988 (save-restriction
1989 (narrow-to-region begin end)
1990 ;; hook may add or delete lines, but the subdir boundary
1991 ;; marker floats
1992 (run-hooks 'dired-after-readin-hook))))))
1994 (defun dired-tree-lessp (dir1 dir2)
1995 ;; Lexicographic order on file name components, like `ls -lR':
1996 ;; DIR1 < DIR2 if DIR1 comes *before* DIR2 in an `ls -lR' listing,
1997 ;; i.e., if DIR1 is a (grand)parent dir of DIR2,
1998 ;; or DIR1 and DIR2 are in the same parentdir and their last
1999 ;; components are string-lessp.
2000 ;; Thus ("/usr/" "/usr/bin") and ("/usr/a/" "/usr/b/") are tree-lessp.
2001 ;; string-lessp could arguably be replaced by file-newer-than-file-p
2002 ;; if dired-actual-switches contained `t'.
2003 (setq dir1 (file-name-as-directory dir1)
2004 dir2 (file-name-as-directory dir2))
2005 (let ((components-1 (dired-split "/" dir1))
2006 (components-2 (dired-split "/" dir2)))
2007 (while (and components-1
2008 components-2
2009 (equal (car components-1) (car components-2)))
2010 (setq components-1 (cdr components-1)
2011 components-2 (cdr components-2)))
2012 (let ((c1 (car components-1))
2013 (c2 (car components-2)))
2015 (cond ((and c1 c2)
2016 (string-lessp c1 c2))
2017 ((and (null c1) (null c2))
2018 nil) ; they are equal, not lessp
2019 ((null c1) ; c2 is a subdir of c1: c1<c2
2021 ((null c2) ; c1 is a subdir of c2: c1>c2
2022 nil)
2023 (t (error "This can't happen"))))))
2025 ;; There should be a builtin split function - inverse to mapconcat.
2026 (defun dired-split (pat str &optional limit)
2027 "Splitting on regexp PAT, turn string STR into a list of substrings.
2028 Optional third arg LIMIT (>= 1) is a limit to the length of the
2029 resulting list.
2030 Thus, if SEP is a regexp that only matches itself,
2032 (mapconcat 'identity (dired-split SEP STRING) SEP)
2034 is always equal to STRING."
2035 (let* ((start (string-match pat str))
2036 (result (list (substring str 0 start)))
2037 (count 1)
2038 (end (if start (match-end 0))))
2039 (if end ; else nothing left
2040 (while (and (or (not (integerp limit))
2041 (< count limit))
2042 (string-match pat str end))
2043 (setq start (match-beginning 0)
2044 count (1+ count)
2045 result (cons (substring str end start) result)
2046 end (match-end 0)
2047 start end)
2049 (if (and (or (not (integerp limit))
2050 (< count limit))
2051 end) ; else nothing left
2052 (setq result
2053 (cons (substring str end) result)))
2054 (nreverse result)))
2056 ;;; moving by subdirectories
2058 ;;;###autoload
2059 (defun dired-prev-subdir (arg &optional no-error-if-not-found no-skip)
2060 "Go to previous subdirectory, regardless of level.
2061 When called interactively and not on a subdir line, go to this subdir's line."
2062 ;;(interactive "p")
2063 (interactive
2064 (list (if current-prefix-arg
2065 (prefix-numeric-value current-prefix-arg)
2066 ;; if on subdir start already, don't stay there!
2067 (if (dired-get-subdir) 1 0))))
2068 (dired-next-subdir (- arg) no-error-if-not-found no-skip))
2070 (defun dired-subdir-min ()
2071 (save-excursion
2072 (if (not (dired-prev-subdir 0 t t))
2073 (error "Not in a subdir!")
2074 (point))))
2076 ;;;###autoload
2077 (defun dired-goto-subdir (dir)
2078 "Go to end of header line of DIR in this dired buffer.
2079 Return value of point on success, otherwise return nil.
2080 The next char is either \\n, or \\r if DIR is hidden."
2081 (interactive
2082 (prog1 ; let push-mark display its message
2083 (list (expand-file-name
2084 (completing-read "Goto in situ directory: " ; prompt
2085 dired-subdir-alist ; table
2086 nil ; predicate
2087 t ; require-match
2088 (dired-current-directory))))
2089 (push-mark)))
2090 (setq dir (file-name-as-directory dir))
2091 (let ((elt (assoc dir dired-subdir-alist)))
2092 (and elt
2093 (goto-char (dired-get-subdir-min elt))
2094 ;; dired-subdir-hidden-p and dired-add-entry depend on point being
2095 ;; at either \r or \n after this function succeeds.
2096 (progn (skip-chars-forward "^\r\n")
2097 (point)))))
2099 ;;;###autoload
2100 (defun dired-mark-subdir-files ()
2101 "Mark all files except `.' and `..' in current subdirectory.
2102 If the Dired buffer shows multiple directories, this command
2103 marks the files listed in the subdirectory that point is in."
2104 (interactive)
2105 (let ((p-min (dired-subdir-min)))
2106 (dired-mark-files-in-region p-min (dired-subdir-max))))
2108 ;;;###autoload
2109 (defun dired-kill-subdir (&optional remember-marks)
2110 "Remove all lines of current subdirectory.
2111 Lower levels are unaffected."
2112 ;; With optional REMEMBER-MARKS, return a mark-alist.
2113 (interactive)
2114 (let* ((beg (dired-subdir-min))
2115 (end (dired-subdir-max))
2116 (modflag (buffer-modified-p))
2117 (cur-dir (dired-current-directory))
2118 (cons (assoc-string cur-dir dired-switches-alist))
2119 buffer-read-only)
2120 (if (equal cur-dir default-directory)
2121 (error "Attempt to kill top level directory"))
2122 (prog1
2123 (if remember-marks (dired-remember-marks beg end))
2124 (delete-region beg end)
2125 (if (eobp) ; don't leave final blank line
2126 (delete-char -1))
2127 (dired-unsubdir cur-dir)
2128 (when cons
2129 (setq dired-switches-alist (delete cons dired-switches-alist)))
2130 (restore-buffer-modified-p modflag))))
2132 (defun dired-unsubdir (dir)
2133 ;; Remove DIR from the alist
2134 (setq dired-subdir-alist
2135 (delq (assoc dir dired-subdir-alist) dired-subdir-alist)))
2137 ;;;###autoload
2138 (defun dired-tree-up (arg)
2139 "Go up ARG levels in the dired tree."
2140 (interactive "p")
2141 (let ((dir (dired-current-directory)))
2142 (while (>= arg 1)
2143 (setq arg (1- arg)
2144 dir (file-name-directory (directory-file-name dir))))
2145 ;;(setq dir (expand-file-name dir))
2146 (or (dired-goto-subdir dir)
2147 (error "Cannot go up to %s - not in this tree" dir))))
2149 ;;;###autoload
2150 (defun dired-tree-down ()
2151 "Go down in the dired tree."
2152 (interactive)
2153 (let ((dir (dired-current-directory)) ; has slash
2154 pos case-fold-search) ; filenames are case sensitive
2155 (let ((rest (reverse dired-subdir-alist)) elt)
2156 (while rest
2157 (setq elt (car rest)
2158 rest (cdr rest))
2159 (if (dired-in-this-tree (directory-file-name (car elt)) dir)
2160 (setq rest nil
2161 pos (dired-goto-subdir (car elt))))))
2162 (if pos
2163 (goto-char pos)
2164 (error "At the bottom"))))
2166 ;;; hiding
2168 (defun dired-unhide-subdir ()
2169 (let (buffer-read-only)
2170 (subst-char-in-region (dired-subdir-min) (dired-subdir-max) ?\r ?\n)))
2172 (defun dired-hide-check ()
2173 (or selective-display
2174 (error "selective-display must be t for subdir hiding to work!")))
2176 (defun dired-subdir-hidden-p (dir)
2177 (and selective-display
2178 (save-excursion
2179 (dired-goto-subdir dir)
2180 (looking-at "\r"))))
2182 ;;;###autoload
2183 (defun dired-hide-subdir (arg)
2184 "Hide or unhide the current subdirectory and move to next directory.
2185 Optional prefix arg is a repeat factor.
2186 Use \\[dired-hide-all] to (un)hide all directories."
2187 (interactive "p")
2188 (dired-hide-check)
2189 (let ((modflag (buffer-modified-p)))
2190 (while (>= (setq arg (1- arg)) 0)
2191 (let* ((cur-dir (dired-current-directory))
2192 (hidden-p (dired-subdir-hidden-p cur-dir))
2193 (elt (assoc cur-dir dired-subdir-alist))
2194 (end-pos (1- (dired-get-subdir-max elt)))
2195 buffer-read-only)
2196 ;; keep header line visible, hide rest
2197 (goto-char (dired-get-subdir-min elt))
2198 (skip-chars-forward "^\n\r")
2199 (if hidden-p
2200 (subst-char-in-region (point) end-pos ?\r ?\n)
2201 (subst-char-in-region (point) end-pos ?\n ?\r)))
2202 (dired-next-subdir 1 t))
2203 (restore-buffer-modified-p modflag)))
2205 ;;;###autoload
2206 (defun dired-hide-all (arg)
2207 "Hide all subdirectories, leaving only their header lines.
2208 If there is already something hidden, make everything visible again.
2209 Use \\[dired-hide-subdir] to (un)hide a particular subdirectory."
2210 (interactive "P")
2211 (dired-hide-check)
2212 (let ((modflag (buffer-modified-p))
2213 buffer-read-only)
2214 (if (save-excursion
2215 (goto-char (point-min))
2216 (search-forward "\r" nil t))
2217 ;; unhide - bombs on \r in filenames
2218 (subst-char-in-region (point-min) (point-max) ?\r ?\n)
2219 ;; hide
2220 (let ((pos (point-max)) ; pos of end of last directory
2221 (alist dired-subdir-alist))
2222 (while alist ; while there are dirs before pos
2223 (subst-char-in-region (dired-get-subdir-min (car alist)) ; pos of prev dir
2224 (save-excursion
2225 (goto-char pos) ; current dir
2226 ;; we're somewhere on current dir's line
2227 (forward-line -1)
2228 (point))
2229 ?\n ?\r)
2230 (setq pos (dired-get-subdir-min (car alist))) ; prev dir gets current dir
2231 (setq alist (cdr alist)))))
2232 (restore-buffer-modified-p modflag)))
2234 ;;;###end dired-ins.el
2237 ;; Functions for searching in tags style among marked files.
2239 ;;;###autoload
2240 (defun dired-do-search (regexp)
2241 "Search through all marked files for a match for REGEXP.
2242 Stops when a match is found.
2243 To continue searching for next match, use command \\[tags-loop-continue]."
2244 (interactive "sSearch marked files (regexp): ")
2245 (tags-search regexp '(dired-get-marked-files nil nil 'dired-nondirectory-p)))
2247 ;;;###autoload
2248 (defun dired-do-query-replace-regexp (from to &optional delimited)
2249 "Do `query-replace-regexp' of FROM with TO, on all marked files.
2250 Third arg DELIMITED (prefix arg) means replace only word-delimited matches.
2251 If you exit (\\[keyboard-quit], RET or q), you can resume the query replace
2252 with the command \\[tags-loop-continue]."
2253 (interactive
2254 (let ((common
2255 (query-replace-read-args
2256 "Query replace regexp in marked files" t t)))
2257 (list (nth 0 common) (nth 1 common) (nth 2 common))))
2258 (dolist (file (dired-get-marked-files nil nil 'dired-nondirectory-p))
2259 (let ((buffer (get-file-buffer file)))
2260 (if (and buffer (with-current-buffer buffer
2261 buffer-read-only))
2262 (error "File `%s' is visited read-only" file))))
2263 (tags-query-replace from to delimited
2264 '(dired-get-marked-files nil nil 'dired-nondirectory-p)))
2266 (defun dired-nondirectory-p (file)
2267 (not (file-directory-p file)))
2269 ;;;###autoload
2270 (defun dired-show-file-type (file &optional deref-symlinks)
2271 "Print the type of FILE, according to the `file' command.
2272 If FILE is a symbolic link and the optional argument DEREF-SYMLINKS is
2273 true then the type of the file linked to by FILE is printed instead."
2274 (interactive (list (dired-get-filename t) current-prefix-arg))
2275 (with-temp-buffer
2276 (if deref-symlinks
2277 (call-process "file" nil t t "-L" "--" file)
2278 (call-process "file" nil t t "--" file))
2279 (when (bolp)
2280 (backward-delete-char 1))
2281 (message "%s" (buffer-string))))
2283 (provide 'dired-aux)
2285 ;;; arch-tag: 4b508de9-a153-423d-8d3f-a1bbd86f4f60
2286 ;;; dired-aux.el ends here