summaryrefslogtreecommitdiff
path: root/lisp/find-dired.el
blob: 508ee7e1a1675f149d3134faf83120a78192640e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
;;; find-dired.el --- run a `find' command and dired the output

;; Copyright (C) 1992, 1994, 1995, 2000, 2001, 2002, 2003, 2004,
;;   2005, 2006, 2007, 2008 Free Software Foundation, Inc.

;; Author: Roland McGrath <roland@gnu.org>,
;;	   Sebastian Kremer <sk@thp.uni-koeln.de>
;; Maintainer: FSF
;; Keywords: unix

;; This file is part of GNU Emacs.

;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.

;;; Commentary:

;;; Code:

(require 'dired)

(defgroup find-dired nil
  "Run a `find' command and dired the output."
  :group 'dired
  :prefix "find-")

;; find's -ls corresponds to these switches.
;; Note -b, at least GNU find quotes spaces etc. in filenames
;;;###autoload
(defcustom find-ls-option
  (if (eq system-type 'berkeley-unix) '("-ls" . "-gilsb")
    '("-exec ls -ld {} \\;" . "-ld"))
  "Description of the option to `find' to produce an `ls -l'-type listing.
This is a cons of two strings (FIND-OPTION . LS-SWITCHES).  FIND-OPTION
gives the option (or options) to `find' that produce the desired output.
LS-SWITCHES is a list of `ls' switches to tell dired how to parse the output."
  :type '(cons (string :tag "Find Option")
	       (string :tag "Ls Switches"))
  :group 'find-dired)

;;;###autoload
(defcustom find-ls-subdir-switches "-al"
  "`ls' switches for inserting subdirectories in `*Find*' buffers.
This should contain the \"-l\" switch.
Use the \"-F\" or \"-b\" switches if and only if you also use
them for `find-ls-option'."
  :type 'string
  :group 'find-dired
  :version "22.1")

;;;###autoload
(defcustom find-grep-options
  (if (or (eq system-type 'berkeley-unix)
	  (string-match "solaris2" system-configuration)
	  (string-match "irix" system-configuration))
      "-s" "-q")
  "Option to grep to be as silent as possible.
On Berkeley systems, this is `-s'; on Posix, and with GNU grep, `-q' does it.
On other systems, the closest you can come is to use `-l'."
  :type 'string
  :group 'find-dired)

;;;###autoload
(defcustom find-name-arg
  (if read-file-name-completion-ignore-case
      "-iname"
    "-name")
  "Argument used to specify file name pattern.
If `read-file-name-completion-ignore-case' is non-nil, -iname is used so that
find also ignores case. Otherwise, -name is used."
  :type 'string
  :group 'find-dired
  :version "22.2")

(defvar find-args nil
  "Last arguments given to `find' by \\[find-dired].")

;; History of find-args values entered in the minibuffer.
(defvar find-args-history nil)

(defvar dired-sort-inhibit)

;;;###autoload
(defun find-dired (dir args)
  "Run `find' and go into Dired mode on a buffer of the output.
The command run (after changing into DIR) is

    find . \\( ARGS \\) -ls

except that the variable `find-ls-option' specifies what to use
as the final argument."
  (interactive (list (read-file-name "Run find in directory: " nil "" t)
		     (read-string "Run find (with args): " find-args
				  '(find-args-history . 1))))
  (let ((dired-buffers dired-buffers))
    ;; Expand DIR ("" means default-directory), and make sure it has a
    ;; trailing slash.
    (setq dir (file-name-as-directory (expand-file-name dir)))
    ;; Check that it's really a directory.
    (or (file-directory-p dir)
	(error "find-dired needs a directory: %s" dir))
    (switch-to-buffer (get-buffer-create "*Find*"))

    ;; See if there's still a `find' running, and offer to kill
    ;; it first, if it is.
    (let ((find (get-buffer-process (current-buffer))))
      (when find
	(if (or (not (eq (process-status find) 'run))
		(yes-or-no-p "A `find' process is running; kill it? "))
	    (condition-case nil
		(progn
		  (interrupt-process find)
		  (sit-for 1)
		  (delete-process find))
	      (error nil))
	  (error "Cannot have two processes in `%s' at once" (buffer-name)))))

    (widen)
    (kill-all-local-variables)
    (setq buffer-read-only nil)
    (erase-buffer)
    (setq default-directory dir
	  find-args args	      ; save for next interactive call
	  args (concat find-program " . "
		       (if (string= args "")
			   ""
			 (concat
			  (shell-quote-argument "(")
			  " " args " "
			  (shell-quote-argument ")")
			  " "))
		       (if (equal (car find-ls-option) "-exec ls -ld {} \\;")
			   (concat "-exec ls -ld "
				   (shell-quote-argument "{}")
				   " "
				   (shell-quote-argument ";"))
			 (car find-ls-option))))
    ;; Start the find process.
    (shell-command (concat args "&") (current-buffer))
    ;; The next statement will bomb in classic dired (no optional arg allowed)
    (dired-mode dir (cdr find-ls-option))
    (let ((map (make-sparse-keymap)))
      (set-keymap-parent map (current-local-map))
      (define-key map "\C-c\C-k" 'kill-find)
      (use-local-map map))
    (make-local-variable 'dired-sort-inhibit)
    (setq dired-sort-inhibit t)
    (set (make-local-variable 'revert-buffer-function)
	 `(lambda (ignore-auto noconfirm)
	    (find-dired ,dir ,find-args)))
    ;; Set subdir-alist so that Tree Dired will work:
    (if (fboundp 'dired-simple-subdir-alist)
	;; will work even with nested dired format (dired-nstd.el,v 1.15
	;; and later)
	(dired-simple-subdir-alist)
      ;; else we have an ancient tree dired (or classic dired, where
      ;; this does no harm)
      (set (make-local-variable 'dired-subdir-alist)
	   (list (cons default-directory (point-min-marker)))))
    (set (make-local-variable 'dired-subdir-switches) find-ls-subdir-switches)
    (setq buffer-read-only nil)
    ;; Subdir headlerline must come first because the first marker in
    ;; subdir-alist points there.
    (insert "  " dir ":\n")
    ;; Make second line a ``find'' line in analogy to the ``total'' or
    ;; ``wildcard'' line.
    (insert "  " args "\n")
    (setq buffer-read-only t)
    (let ((proc (get-buffer-process (current-buffer))))
      (set-process-filter proc (function find-dired-filter))
      (set-process-sentinel proc (function find-dired-sentinel))
      ;; Initialize the process marker; it is used by the filter.
      (move-marker (process-mark proc) 1 (current-buffer)))
    (setq mode-line-process '(":%s"))))

(defun kill-find ()
  "Kill the `find' process running in the current buffer."
  (interactive)
  (let ((find (get-buffer-process (current-buffer))))
    (and find (eq (process-status find) 'run)
	 (eq (process-filter find) (function find-dired-filter))
	 (condition-case nil
	     (delete-process find)
	   (error nil)))))

;;;###autoload
(defun find-name-dired (dir pattern)
  "Search DIR recursively for files matching the globbing pattern PATTERN,
and run dired on those files.
PATTERN is a shell wildcard (not an Emacs regexp) and need not be quoted.
The command run (after changing into DIR) is

    find . -name 'PATTERN' -ls"
  (interactive
   "DFind-name (directory): \nsFind-name (filename wildcard): ")
  (find-dired dir (concat find-name-arg " " (shell-quote-argument pattern))))

;; This functionality suggested by
;; From: oblanc@watcgl.waterloo.edu (Olivier Blanc)
;; Subject: find-dired, lookfor-dired
;; Date: 10 May 91 17:50:00 GMT
;; Organization: University of Waterloo

(defalias 'lookfor-dired 'find-grep-dired)
;;;###autoload
(defun find-grep-dired (dir regexp)
  "Find files in DIR containing a regexp REGEXP and start Dired on output.
The command run (after changing into DIR) is

    find . -exec grep -s -e REGEXP {} \\\; -ls

Thus ARG can also contain additional grep options."
  (interactive "DFind-grep (directory): \nsFind-grep (grep regexp): ")
  ;; find -exec doesn't allow shell i/o redirections in the command,
  ;; or we could use `grep -l >/dev/null'
  ;; We use -type f, not ! -type d, to avoid getting screwed
  ;; by FIFOs and devices.  I'm not sure what's best to do
  ;; about symlinks, so as far as I know this is not wrong.
  (find-dired dir
	      (concat "-type f -exec " grep-program " " find-grep-options " -e "
		      (shell-quote-argument regexp)
		      " "
		      (shell-quote-argument "{}")
		      " "
		      (shell-quote-argument ";"))))

(defun find-dired-filter (proc string)
  ;; Filter for \\[find-dired] processes.
  (let ((buf (process-buffer proc))
	(inhibit-read-only t))
    (if (buffer-name buf)
	(with-current-buffer buf
	  (save-excursion
	    (save-restriction
	      (widen)
	      (let ((buffer-read-only nil)
		    (beg (point-max))
		    (l-opt (and (consp find-ls-option)
				(string-match "l" (cdr find-ls-option))))
		    (ls-regexp (concat "^ +[^ \t\r\n]+\\( +[^ \t\r\n]+\\) +"
				       "[^ \t\r\n]+ +[^ \t\r\n]+\\( +[0-9]+\\)")))
		(goto-char beg)
		(insert string)
		(goto-char beg)
		(or (looking-at "^")
		    (forward-line 1))
		(while (looking-at "^")
		  (insert "  ")
		  (forward-line 1))
		;; Convert ` ./FILE' to ` FILE'
		;; This would lose if the current chunk of output
		;; starts or ends within the ` ./', so back up a bit:
		(goto-char (- beg 3))	; no error if < 0
		(while (search-forward " ./" nil t)
		  (delete-region (point) (- (point) 2)))
		;; Pad the number of links and file size.  This is a
		;; quick and dirty way of getting the columns to line up
		;; most of the time, but it's not foolproof.
		(when l-opt
		  (goto-char beg)
		  (goto-char (line-beginning-position))
		  (while (re-search-forward ls-regexp nil t)
		    (replace-match (format "%4s" (match-string 1))
				   nil nil nil 1)
		    (replace-match (format "%9s" (match-string 2))
				   nil nil nil 2)
		    (forward-line 1)))
		;; Find all the complete lines in the unprocessed
		;; output and process it to add text properties.
		(goto-char (point-max))
		(if (search-backward "\n" (process-mark proc) t)
		    (progn
		      (dired-insert-set-properties (process-mark proc)
						   (1+ (point)))
		      (move-marker (process-mark proc) (1+ (point)))))))))
      ;; The buffer has been killed.
      (delete-process proc))))

(defun find-dired-sentinel (proc state)
  ;; Sentinel for \\[find-dired] processes.
  (let ((buf (process-buffer proc))
	(inhibit-read-only t))
    (if (buffer-name buf)
	(save-excursion
	  (set-buffer buf)
	  (let ((buffer-read-only nil))
	    (save-excursion
	      (goto-char (point-max))
	      (insert "\n  find " state)
	      (forward-char -1)		;Back up before \n at end of STATE.
	      (insert " at " (substring (current-time-string) 0 19))
	      (forward-char 1)
	      (setq mode-line-process
		    (concat ":"
			    (symbol-name (process-status proc))))
	      ;; Since the buffer and mode line will show that the
	      ;; process is dead, we can delete it now.  Otherwise it
	      ;; will stay around until M-x list-processes.
	      (delete-process proc)
	      (force-mode-line-update)))
	  (message "find-dired %s finished." (current-buffer))))))


(provide 'find-dired)

;; arch-tag: 8edece95-af00-4221-bc74-a4bd2f75f9b0
;;; find-dired.el ends here