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092af6d8 | 1 | ;;; locate.el --- interface to the locate command |
6aea3b07 | 2 | |
5421b899 | 3 | ;; Copyright (C) 1996, 1998, 2001 Free Software Foundation, Inc. |
6aea3b07 | 4 | |
dc268724 | 5 | ;; Author: Peter Breton <pbreton@cs.umb.edu> |
f947a7fa | 6 | ;; Keywords: unix files |
6aea3b07 RS |
7 | |
8 | ;; This file is part of GNU Emacs. | |
9 | ||
10 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
11 | ;; it under the terms of the GNU General Public License as published by | |
12 | ;; the Free Software Foundation; either version 2, or (at your option) | |
13 | ;; any later version. | |
14 | ||
15 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;; GNU General Public License for more details. | |
19 | ||
20 | ;; You should have received a copy of the GNU General Public License | |
21 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
22 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | ;; Boston, MA 02111-1307, USA. | |
24 | ||
25 | ;;; Commentary: | |
26 | ||
27 | ;; Search a database of files and use dired commands on | |
83346ee8 | 28 | ;; the result. |
6aea3b07 RS |
29 | ;; |
30 | \f | |
6aea3b07 | 31 | ;;;;; Building a database of files ;;;;;;;;; |
83346ee8 | 32 | ;; |
6aea3b07 RS |
33 | ;; You can create a simple files database with a port of the Unix find command |
34 | ;; and one of the various Windows NT various scheduling utilities, | |
35 | ;; for example the AT command from the NT Resource Kit, WinCron which is | |
36 | ;; included with Microsoft FrontPage, or the shareware NTCron program. | |
37 | ;; | |
38 | ;; To set up a function which searches the files database, do something | |
39 | ;; like this: | |
83346ee8 | 40 | ;; |
be8bf2d0 | 41 | ;; (defvar locate-fcodes-file "c:/users/peter/fcodes") |
6aea3b07 | 42 | ;; (defvar locate-make-command-line 'nt-locate-make-command-line) |
83346ee8 | 43 | ;; |
6aea3b07 | 44 | ;; (defun nt-locate-make-command-line (arg) |
be8bf2d0 | 45 | ;; (list "grep" "-i" arg locate-fcodes-file)) |
6aea3b07 RS |
46 | ;; |
47 | ;;;;;;;; ADVICE For dired-make-relative: ;;;;;;;;; | |
83346ee8 | 48 | ;; |
6aea3b07 RS |
49 | ;; For certain dired commands to work right, you should also include the |
50 | ;; following in your _emacs/.emacs: | |
83346ee8 | 51 | ;; |
6aea3b07 RS |
52 | ;; (defadvice dired-make-relative (before set-no-error activate) |
53 | ;; "For locate mode and Windows, don't return errors" | |
54 | ;; (if (and (eq major-mode 'locate-mode) | |
55 | ;; (memq system-type (list 'windows-nt 'ms-dos))) | |
56 | ;; (ad-set-arg 2 t) | |
57 | ;; )) | |
58 | ;; | |
be8bf2d0 | 59 | ;; Otherwise, `dired-make-relative' will give error messages like |
6aea3b07 RS |
60 | ;; "FILENAME: not in directory tree growing at /" |
61 | \f | |
62 | ;;; Commentary: | |
63 | ;; | |
64 | ;; Locate.el provides an interface to a program which searches a | |
65 | ;; database of file names. By default, this program is the GNU locate | |
66 | ;; command, but it could also be the BSD-style find command, or even a | |
67 | ;; user specified command. | |
68 | ;; | |
69 | ;; To use the BSD-style "fast find", or any other shell command of the | |
83346ee8 | 70 | ;; form |
6aea3b07 RS |
71 | ;; |
72 | ;; SHELLPROGRAM Name-to-find | |
73 | ;; | |
be8bf2d0 | 74 | ;; set the variable `locate-command' in your .emacs file. |
6aea3b07 | 75 | ;; |
83346ee8 | 76 | ;; To use a more complicated expression, create a function which |
be8bf2d0 RS |
77 | ;; takes a string (the name to find) as input and returns a list. |
78 | ;; The first element should be the command to be executed, the remaining | |
79 | ;; elements should be the arguments (including the name to find). Then put | |
6aea3b07 | 80 | ;; |
83346ee8 | 81 | ;; (setq locate-make-command-line 'my-locate-command-line) |
6aea3b07 RS |
82 | ;; |
83 | ;; in your .emacs, using the name of your function in place of | |
be8bf2d0 | 84 | ;; my-locate-command-line. |
6aea3b07 RS |
85 | ;; |
86 | ;; You should make sure that whichever command you use works correctly | |
87 | ;; from a shell prompt. GNU locate and BSD find expect the file databases | |
88 | ;; to either be in standard places or located via environment variables. | |
89 | ;; If the latter, make sure these environment variables are set in | |
be8bf2d0 | 90 | ;; your emacs process. |
6aea3b07 RS |
91 | ;; |
92 | ;; Locate-mode assumes that each line output from the locate-command | |
93 | ;; consists exactly of a file name, possibly preceded or trailed by | |
94 | ;; whitespace. If your file database has other information on the line (for | |
83346ee8 | 95 | ;; example, the file size), you will need to redefine the function |
be8bf2d0 | 96 | ;; `locate-get-file-positions' to return a list consisting of the first |
6aea3b07 RS |
97 | ;; character in the file name and the last character in the file name. |
98 | ;; | |
99 | ;; To use locate-mode, simply type M-x locate and then the string | |
100 | ;; you wish to find. You can use almost all of the dired commands in | |
101 | ;; the resulting *Locate* buffer. It is worth noting that your commands | |
102 | ;; do not, of course, affect the file database. For example, if you | |
103 | ;; compress a file in the locate buffer, the actual file will be | |
104 | ;; compressed, but the entry in the file database will not be | |
105 | ;; affected. Consequently, the database and the filesystem will be out | |
be8bf2d0 | 106 | ;; of sync until the next time the database is updated. |
6aea3b07 | 107 | ;; |
be8bf2d0 | 108 | ;; The command `locate-with-filter' keeps only lines matching a |
6aea3b07 RS |
109 | ;; regular expression; this is often useful to constrain a big search. |
110 | ;; | |
111 | \f | |
112 | ;;; Code: | |
113 | ||
114 | (eval-when-compile | |
115 | (require 'dired)) | |
116 | ||
117 | ;; Variables | |
6aea3b07 | 118 | |
be8bf2d0 RS |
119 | (defvar locate-current-filter nil) |
120 | ||
d979dc2b SE |
121 | (defgroup locate nil |
122 | "Interface to the locate command." | |
123 | :prefix "locate-" | |
124 | :group 'external) | |
6aea3b07 | 125 | |
d979dc2b SE |
126 | (defcustom locate-command "locate" |
127 | "*The executable program used to search a database of files." | |
128 | :type 'string | |
129 | :group 'locate) | |
6aea3b07 | 130 | |
d979dc2b SE |
131 | (defvar locate-history-list nil |
132 | "The history list used by the \\[locate] command.") | |
6aea3b07 | 133 | |
83346ee8 PB |
134 | (defvar locate-grep-history-list nil |
135 | "The history list used by the \\[locate-with-filter] command.") | |
136 | ||
d979dc2b SE |
137 | (defcustom locate-make-command-line 'locate-default-make-command-line |
138 | "*Function used to create the locate command line." | |
139 | :type 'function | |
140 | :group 'locate) | |
141 | ||
142 | (defcustom locate-buffer-name "*Locate*" | |
143 | "*Name of the buffer to show results from the \\[locate] command." | |
144 | :type 'string | |
145 | :group 'locate) | |
146 | ||
147 | (defcustom locate-fcodes-file nil | |
be8bf2d0 RS |
148 | "*File name for the database of file names." |
149 | :type '(choice file (const nil)) | |
d979dc2b SE |
150 | :group 'locate) |
151 | ||
83346ee8 | 152 | (defcustom locate-header-face nil |
d979dc2b SE |
153 | "*Face used to highlight the locate header." |
154 | :type 'face | |
155 | :group 'locate) | |
6aea3b07 | 156 | |
be8bf2d0 RS |
157 | (defcustom locate-update-command "updatedb" |
158 | "The command used to update the locate database." | |
159 | :type 'string | |
160 | :group 'locate) | |
6aea3b07 | 161 | |
83346ee8 PB |
162 | (defcustom locate-prompt-for-command nil |
163 | "If non-nil, the default behavior of the locate command is to prompt for a command to run. | |
164 | Otherwise, that behavior is invoked via a prefix argument." | |
165 | :group 'locate | |
166 | :type 'boolean | |
167 | ) | |
168 | ||
6aea3b07 RS |
169 | ;; Functions |
170 | ||
171 | (defun locate-default-make-command-line (search-string) | |
be8bf2d0 | 172 | (list locate-command search-string)) |
6aea3b07 | 173 | |
96c1776c PB |
174 | (defun locate-word-at-point () |
175 | (let ((pt (point))) | |
176 | (buffer-substring-no-properties | |
177 | (save-excursion | |
178 | (skip-chars-backward "-a-zA-Z0-9.") | |
179 | (point)) | |
180 | (save-excursion | |
181 | (skip-chars-forward "-a-zA-Z0-9.") | |
182 | (skip-chars-backward "." pt) | |
183 | (point))))) | |
184 | ||
1d96c2ff | 185 | ;;;###autoload |
8348e1f9 | 186 | (defun locate (search-string &optional filter) |
83346ee8 PB |
187 | "Run the program `locate', putting results in `*Locate*' buffer. |
188 | With prefix arg, prompt for the locate command to run." | |
6aea3b07 | 189 | (interactive |
83346ee8 | 190 | (list |
8348e1f9 PB |
191 | (if (or (and current-prefix-arg |
192 | (not locate-prompt-for-command)) | |
83346ee8 | 193 | (and (not current-prefix-arg) locate-prompt-for-command)) |
8348e1f9 PB |
194 | (let ((locate-cmd (funcall locate-make-command-line ""))) |
195 | (read-from-minibuffer | |
196 | "Run locate (like this): " | |
197 | (cons | |
198 | (concat (car locate-cmd) " " | |
199 | (mapconcat 'identity (cdr locate-cmd) " ")) | |
200 | (+ 2 (length (car locate-cmd)))) | |
201 | nil nil 'locate-history-list)) | |
fe8c7212 | 202 | (let* ((default (locate-word-at-point)) |
f1180544 | 203 | (input |
fe8c7212 RS |
204 | (read-from-minibuffer |
205 | (if (> (length default) 0) | |
206 | (format "Locate (default `%s'): " default) | |
207 | (format "Locate: ")) | |
208 | nil nil nil 'locate-history-list default t))) | |
209 | (and (equal input "") default | |
210 | (setq input default)) | |
211 | input)))) | |
212 | (if (equal search-string "") | |
c19813f3 | 213 | (error "Please specify a filename to search for")) |
be8bf2d0 | 214 | (let* ((locate-cmd-list (funcall locate-make-command-line search-string)) |
6aea3b07 RS |
215 | (locate-cmd (car locate-cmd-list)) |
216 | (locate-cmd-args (cdr locate-cmd-list)) | |
83346ee8 | 217 | (run-locate-command |
8348e1f9 PB |
218 | (or (and current-prefix-arg (not locate-prompt-for-command)) |
219 | (and (not current-prefix-arg) locate-prompt-for-command))) | |
be8bf2d0 | 220 | ) |
83346ee8 | 221 | |
6aea3b07 | 222 | ;; Find the Locate buffer |
be8bf2d0 RS |
223 | (save-window-excursion |
224 | (set-buffer (get-buffer-create locate-buffer-name)) | |
225 | (locate-mode) | |
226 | (erase-buffer) | |
83346ee8 | 227 | |
be8bf2d0 | 228 | (setq locate-current-filter filter) |
83346ee8 PB |
229 | |
230 | (if run-locate-command | |
231 | (shell-command search-string locate-buffer-name) | |
232 | (apply 'call-process locate-cmd nil t nil locate-cmd-args)) | |
233 | ||
be8bf2d0 RS |
234 | (and filter |
235 | (locate-filter-output filter)) | |
6aea3b07 | 236 | |
8348e1f9 | 237 | (locate-do-setup search-string) |
be8bf2d0 RS |
238 | ) |
239 | (and (not (string-equal (buffer-name) locate-buffer-name)) | |
240 | (switch-to-buffer-other-window locate-buffer-name)) | |
83346ee8 | 241 | |
96c1776c | 242 | (run-hooks 'dired-mode-hook) |
bca3a805 | 243 | (dired-next-line 2) ;move to first matching file. |
83346ee8 | 244 | (run-hooks 'locate-post-command-hook) |
be8bf2d0 RS |
245 | ) |
246 | ) | |
6aea3b07 | 247 | |
1d96c2ff | 248 | ;;;###autoload |
6aea3b07 | 249 | (defun locate-with-filter (search-string filter) |
9be8f657 GM |
250 | "Run the locate command with a filter. |
251 | ||
252 | The filter is a regular expression. Only results matching the filter are | |
253 | shown; this is often useful to constrain a big search." | |
6aea3b07 | 254 | (interactive |
be8bf2d0 RS |
255 | (list (read-from-minibuffer "Locate: " nil nil |
256 | nil 'locate-history-list) | |
257 | (read-from-minibuffer "Filter: " nil nil | |
83346ee8 | 258 | nil 'locate-grep-history-list))) |
8348e1f9 | 259 | (locate search-string filter)) |
6aea3b07 RS |
260 | |
261 | (defun locate-filter-output (filter) | |
262 | "Filter output from the locate command." | |
263 | (goto-char (point-min)) | |
83346ee8 | 264 | (delete-non-matching-lines filter)) |
6aea3b07 RS |
265 | |
266 | (defvar locate-mode-map nil | |
267 | "Local keymap for Locate mode buffers.") | |
268 | (if locate-mode-map | |
269 | nil | |
270 | ||
271 | (require 'dired) | |
272 | ||
273 | (setq locate-mode-map (copy-keymap dired-mode-map)) | |
274 | ||
275 | ;; Undefine Useless Dired Menu bars | |
276 | (define-key locate-mode-map [menu-bar Dired] 'undefined) | |
277 | (define-key locate-mode-map [menu-bar subdir] 'undefined) | |
278 | ||
279 | (define-key locate-mode-map [menu-bar mark executables] 'undefined) | |
280 | (define-key locate-mode-map [menu-bar mark directory] 'undefined) | |
281 | (define-key locate-mode-map [menu-bar mark directories] 'undefined) | |
282 | (define-key locate-mode-map [menu-bar mark symlinks] 'undefined) | |
283 | ||
83346ee8 PB |
284 | (define-key locate-mode-map [mouse-2] 'locate-mouse-view-file) |
285 | (define-key locate-mode-map "\C-c\C-t" 'locate-tags) | |
6aea3b07 | 286 | |
83346ee8 PB |
287 | (define-key locate-mode-map "U" 'dired-unmark-all-files) |
288 | (define-key locate-mode-map "V" 'locate-find-directory) | |
6aea3b07 RS |
289 | ) |
290 | ||
291 | ;; This variable is used to indent the lines and then to search for | |
292 | ;; the file name | |
293 | (defconst locate-filename-indentation 4 | |
be8bf2d0 | 294 | "The amount of indentation for each file.") |
6aea3b07 | 295 | |
6aea3b07 RS |
296 | (defun locate-get-file-positions () |
297 | (save-excursion | |
be8bf2d0 RS |
298 | (end-of-line) |
299 | (let ((eol (point))) | |
300 | (beginning-of-line) | |
83346ee8 | 301 | |
be8bf2d0 RS |
302 | ;; Assumes names end at the end of the line |
303 | (forward-char locate-filename-indentation) | |
304 | (list (point) eol)))) | |
6aea3b07 RS |
305 | |
306 | ;; From SQL-mode | |
be8bf2d0 | 307 | (defun locate-current-line-number () |
6aea3b07 | 308 | "Return the current line number, as an integer." |
6aea3b07 RS |
309 | (+ (count-lines (point-min) (point)) |
310 | (if (eq (current-column) 0) | |
311 | 1 | |
312 | 0))) | |
313 | ||
314 | (defun locate-get-filename () | |
315 | (let ((pos (locate-get-file-positions)) | |
be8bf2d0 | 316 | (lineno (locate-current-line-number))) |
83346ee8 PB |
317 | (and (not (eq lineno 1)) |
318 | (not (eq lineno 2)) | |
6aea3b07 RS |
319 | (buffer-substring (elt pos 0) (elt pos 1))))) |
320 | ||
83346ee8 | 321 | (defun locate-mouse-view-file (event) |
6aea3b07 | 322 | "In Locate mode, view a file, using the mouse." |
83346ee8 | 323 | (interactive "@e") |
6aea3b07 RS |
324 | (save-excursion |
325 | (goto-char (posn-point (event-start event))) | |
be8bf2d0 | 326 | (view-file (locate-get-filename)))) |
6aea3b07 RS |
327 | |
328 | ;; Define a mode for locate | |
329 | ;; Default directory is set to "/" so that dired commands, which | |
330 | ;; expect to be in a tree, will work properly | |
331 | (defun locate-mode () | |
332 | "Major mode for the `*Locate*' buffer made by \\[locate]." | |
333 | (kill-all-local-variables) | |
83346ee8 PB |
334 | ;; Avoid clobbering this variables |
335 | (make-local-variable 'dired-subdir-alist) | |
6aea3b07 RS |
336 | (use-local-map locate-mode-map) |
337 | (setq major-mode 'locate-mode | |
338 | mode-name "Locate" | |
83346ee8 PB |
339 | default-directory "/") |
340 | (dired-alist-add-1 default-directory (point-min-marker)) | |
5c6a8dfe | 341 | (make-local-variable 'dired-move-to-filename-regexp) |
83346ee8 | 342 | ;; This should support both Unix and Windoze style names |
5c6a8dfe | 343 | (setq dired-move-to-filename-regexp |
83346ee8 PB |
344 | (concat "." |
345 | (make-string (1- locate-filename-indentation) ?\ ) | |
346 | "\\(/\\|[A-Za-z]:\\)")) | |
5c6a8dfe RS |
347 | (make-local-variable 'dired-actual-switches) |
348 | (setq dired-actual-switches "") | |
349 | (make-local-variable 'dired-permission-flags-regexp) | |
83346ee8 PB |
350 | (setq dired-permission-flags-regexp |
351 | (concat "^.\\(" | |
352 | (make-string (1- locate-filename-indentation) ?\ ) | |
353 | "\\)")) | |
be8bf2d0 | 354 | (make-local-variable 'revert-buffer-function) |
83346ee8 | 355 | (setq revert-buffer-function 'locate-update) |
6aea3b07 RS |
356 | (run-hooks 'locate-mode-hook)) |
357 | ||
8348e1f9 PB |
358 | (defun locate-do-setup (search-string) |
359 | (goto-char (point-min)) | |
360 | (save-excursion | |
83346ee8 | 361 | |
8348e1f9 PB |
362 | ;; Nothing returned from locate command? |
363 | (and (eobp) | |
364 | (progn | |
365 | (kill-buffer locate-buffer-name) | |
366 | (if locate-current-filter | |
367 | (error "Locate: no match for %s in database using filter %s" | |
368 | search-string locate-current-filter) | |
369 | (error "Locate: no match for %s in database" search-string)))) | |
83346ee8 | 370 | |
8348e1f9 | 371 | (locate-insert-header search-string) |
83346ee8 | 372 | |
8348e1f9 PB |
373 | (while (not (eobp)) |
374 | (insert-char ?\ locate-filename-indentation t) | |
375 | (locate-set-properties) | |
376 | (forward-line 1))) | |
377 | (goto-char (point-min))) | |
6aea3b07 RS |
378 | |
379 | (defun locate-set-properties () | |
380 | (save-excursion | |
381 | (let ((pos (locate-get-file-positions))) | |
83346ee8 | 382 | (dired-insert-set-properties (elt pos 0) (elt pos 1))))) |
6aea3b07 RS |
383 | |
384 | (defun locate-insert-header (search-string) | |
385 | (let ((locate-format-string "Matches for %s") | |
386 | (locate-regexp-match | |
387 | (concat " *Matches for \\(" (regexp-quote search-string) "\\)")) | |
388 | (locate-format-args (list search-string)) | |
389 | ) | |
83346ee8 | 390 | |
be8bf2d0 | 391 | (and locate-fcodes-file |
6aea3b07 RS |
392 | (setq locate-format-string |
393 | (concat locate-format-string " in %s") | |
394 | locate-regexp-match | |
395 | (concat locate-regexp-match | |
396 | " in \\(" | |
397 | (regexp-quote locate-fcodes-file) | |
398 | "\\)") | |
399 | locate-format-args | |
400 | (append (list locate-fcodes-file) locate-format-args))) | |
401 | ||
be8bf2d0 | 402 | (and locate-current-filter |
6aea3b07 RS |
403 | (setq locate-format-string |
404 | (concat locate-format-string " using filter %s") | |
405 | locate-regexp-match | |
406 | (concat locate-regexp-match | |
407 | " using filter " | |
408 | "\\(" | |
409 | (regexp-quote locate-current-filter) | |
410 | "\\)") | |
411 | locate-format-args | |
412 | (append (list locate-current-filter) locate-format-args))) | |
83346ee8 | 413 | |
6aea3b07 | 414 | (setq locate-format-string |
5421b899 | 415 | (concat locate-format-string ":\n\n") |
6aea3b07 | 416 | locate-regexp-match |
5421b899 | 417 | (concat locate-regexp-match ":\n")) |
83346ee8 | 418 | |
5c6a8dfe | 419 | (insert (apply 'format locate-format-string (reverse locate-format-args))) |
83346ee8 | 420 | |
6aea3b07 RS |
421 | (save-excursion |
422 | (goto-char (point-min)) | |
423 | (if (not (looking-at locate-regexp-match)) | |
424 | nil | |
425 | (add-text-properties (match-beginning 1) (match-end 1) | |
426 | (list 'face locate-header-face)) | |
427 | (and (match-beginning 2) | |
428 | (add-text-properties (match-beginning 2) (match-end 2) | |
429 | (list 'face locate-header-face))) | |
430 | (and (match-beginning 3) | |
431 | (add-text-properties (match-beginning 3) (match-end 3) | |
432 | (list 'face locate-header-face))) | |
433 | )))) | |
434 | ||
435 | (defun locate-tags () | |
436 | "Visit a tags table in `*Locate*' mode." | |
437 | (interactive) | |
438 | (let ((tags-table (locate-get-filename))) | |
83346ee8 | 439 | (and (y-or-n-p (format "Visit tags table %s? " tags-table)) |
be8bf2d0 RS |
440 | (visit-tags-table tags-table)))) |
441 | ||
442 | ;; From Stephen Eglen <stephen@cns.ed.ac.uk> | |
443 | (defun locate-update (ignore1 ignore2) | |
444 | "Update the locate database. | |
445 | Database is updated using the shell command in `locate-update-command'." | |
446 | (let ((str (car locate-history-list))) | |
447 | (cond ((yes-or-no-p "Update locate database (may take a few seconds)? ") | |
448 | (shell-command locate-update-command) | |
8348e1f9 | 449 | (locate str))))) |
83346ee8 PB |
450 | |
451 | ;;; Modified three functions from `dired.el': | |
452 | ;;; dired-find-directory, | |
453 | ;;; dired-find-directory-other-window | |
454 | ;;; dired-get-filename | |
455 | ||
456 | (defun locate-find-directory () | |
457 | "Visit the directory of the file mentioned on this line." | |
458 | (interactive) | |
459 | (let ((directory-name (locate-get-dirname))) | |
460 | (if (file-directory-p directory-name) | |
461 | (find-file directory-name) | |
462 | (if (file-symlink-p directory-name) | |
463 | (error "Directory is a symlink to a nonexistent target") | |
464 | (error "Directory no longer exists; run `updatedb' to update database"))))) | |
465 | ||
466 | (defun locate-find-directory-other-window () | |
467 | "Visit the directory of the file named on this line in other window." | |
468 | (interactive) | |
469 | (find-file-other-window (locate-get-dirname))) | |
470 | ||
471 | (defun locate-get-dirname () | |
472 | "Return the directory name of the file mentioned on this line." | |
473 | (let (file (filepos (locate-get-file-positions))) | |
474 | (if (setq file (buffer-substring (nth 0 filepos) (nth 1 filepos))) | |
475 | (progn | |
476 | ;; Get rid of the mouse-face property that file names have. | |
477 | (set-text-properties 0 (length file) nil file) | |
478 | (setq file (file-name-directory file)) | |
479 | ;; Unquote names quoted by ls or by dired-insert-directory. | |
480 | ;; Using read to unquote is much faster than substituting | |
481 | ;; \007 (4 chars) -> ^G (1 char) etc. in a lisp loop. | |
482 | (setq file | |
483 | (read | |
484 | (concat "\"" | |
485 | ;; some ls -b don't escape quotes, argh! | |
486 | ;; This is not needed for GNU ls, though. | |
487 | (or (dired-string-replace-match | |
488 | "\\([^\\]\\|\\`\\)\"" file "\\1\\\\\"" nil t) | |
489 | file) | |
490 | "\""))))) | |
491 | (and file buffer-file-coding-system | |
492 | (not file-name-coding-system) | |
493 | (setq file (encode-coding-string file buffer-file-coding-system))) | |
494 | file)) | |
495 | ||
496 | ;; Only for GNU locate | |
497 | (defun locate-in-alternate-database (search-string database) | |
498 | "Run the GNU locate command, using an alternate database." | |
499 | (interactive | |
500 | (list | |
501 | (progn | |
502 | ;; (require 'locate) | |
503 | (read-from-minibuffer "Locate: " nil nil | |
504 | nil 'locate-history-list)) | |
505 | (read-file-name "Locate using Database: " ) | |
506 | )) | |
507 | (or (file-exists-p database) | |
508 | (error "Database file %s does not exist" database)) | |
509 | (let ((locate-make-command-line | |
510 | (function (lambda (string) | |
511 | (cons locate-command | |
512 | (list (concat "--database=" | |
513 | (expand-file-name database)) | |
514 | string)))))) | |
8348e1f9 | 515 | (locate search-string))) |
6aea3b07 RS |
516 | |
517 | (provide 'locate) | |
518 | ||
519 | ;;; locate.el ends here |