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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 | ||
271a87e8 | 27 | ;; Search a database of files and use dired commands on the result. |
6aea3b07 RS |
28 | ;; |
29 | ;; Locate.el provides an interface to a program which searches a | |
30 | ;; database of file names. By default, this program is the GNU locate | |
31 | ;; command, but it could also be the BSD-style find command, or even a | |
32 | ;; user specified command. | |
33 | ;; | |
34 | ;; To use the BSD-style "fast find", or any other shell command of the | |
83346ee8 | 35 | ;; form |
6aea3b07 RS |
36 | ;; |
37 | ;; SHELLPROGRAM Name-to-find | |
38 | ;; | |
be8bf2d0 | 39 | ;; set the variable `locate-command' in your .emacs file. |
6aea3b07 | 40 | ;; |
83346ee8 | 41 | ;; To use a more complicated expression, create a function which |
be8bf2d0 RS |
42 | ;; takes a string (the name to find) as input and returns a list. |
43 | ;; The first element should be the command to be executed, the remaining | |
44 | ;; elements should be the arguments (including the name to find). Then put | |
6aea3b07 | 45 | ;; |
83346ee8 | 46 | ;; (setq locate-make-command-line 'my-locate-command-line) |
6aea3b07 RS |
47 | ;; |
48 | ;; in your .emacs, using the name of your function in place of | |
be8bf2d0 | 49 | ;; my-locate-command-line. |
6aea3b07 RS |
50 | ;; |
51 | ;; You should make sure that whichever command you use works correctly | |
52 | ;; from a shell prompt. GNU locate and BSD find expect the file databases | |
53 | ;; to either be in standard places or located via environment variables. | |
54 | ;; If the latter, make sure these environment variables are set in | |
be8bf2d0 | 55 | ;; your emacs process. |
6aea3b07 RS |
56 | ;; |
57 | ;; Locate-mode assumes that each line output from the locate-command | |
58 | ;; consists exactly of a file name, possibly preceded or trailed by | |
59 | ;; whitespace. If your file database has other information on the line (for | |
83346ee8 | 60 | ;; example, the file size), you will need to redefine the function |
be8bf2d0 | 61 | ;; `locate-get-file-positions' to return a list consisting of the first |
6aea3b07 RS |
62 | ;; character in the file name and the last character in the file name. |
63 | ;; | |
64 | ;; To use locate-mode, simply type M-x locate and then the string | |
65 | ;; you wish to find. You can use almost all of the dired commands in | |
66 | ;; the resulting *Locate* buffer. It is worth noting that your commands | |
67 | ;; do not, of course, affect the file database. For example, if you | |
68 | ;; compress a file in the locate buffer, the actual file will be | |
69 | ;; compressed, but the entry in the file database will not be | |
70 | ;; affected. Consequently, the database and the filesystem will be out | |
be8bf2d0 | 71 | ;; of sync until the next time the database is updated. |
6aea3b07 | 72 | ;; |
be8bf2d0 | 73 | ;; The command `locate-with-filter' keeps only lines matching a |
6aea3b07 RS |
74 | ;; regular expression; this is often useful to constrain a big search. |
75 | ;; | |
76 | \f | |
271a87e8 LT |
77 | ;;;;; Building a database of files ;;;;;;;;; |
78 | ;; | |
79 | ;; You can create a simple files database with a port of the Unix find command | |
80 | ;; and one of the various Windows NT various scheduling utilities, | |
81 | ;; for example the AT command from the NT Resource Kit, WinCron which is | |
82 | ;; included with Microsoft FrontPage, or the shareware NTCron program. | |
83 | ;; | |
84 | ;; To set up a function which searches the files database, do something | |
85 | ;; like this: | |
86 | ;; | |
87 | ;; (defvar locate-fcodes-file "c:/users/peter/fcodes") | |
88 | ;; (defvar locate-make-command-line 'nt-locate-make-command-line) | |
89 | ;; | |
90 | ;; (defun nt-locate-make-command-line (arg) | |
91 | ;; (list "grep" "-i" arg locate-fcodes-file)) | |
92 | ;; | |
93 | ;;;;;;;; ADVICE For dired-make-relative: ;;;;;;;;; | |
94 | ;; | |
95 | ;; For certain dired commands to work right, you should also include the | |
96 | ;; following in your _emacs/.emacs: | |
97 | ;; | |
98 | ;; (defadvice dired-make-relative (before set-no-error activate) | |
99 | ;; "For locate mode and Windows, don't return errors" | |
100 | ;; (if (and (eq major-mode 'locate-mode) | |
101 | ;; (memq system-type (list 'windows-nt 'ms-dos))) | |
102 | ;; (ad-set-arg 2 t) | |
103 | ;; )) | |
104 | ;; | |
105 | ;; Otherwise, `dired-make-relative' will give error messages like | |
106 | ;; "FILENAME: not in directory tree growing at /" | |
107 | ||
108 | \f | |
6aea3b07 RS |
109 | ;;; Code: |
110 | ||
111 | (eval-when-compile | |
112 | (require 'dired)) | |
113 | ||
114 | ;; Variables | |
6aea3b07 | 115 | |
be8bf2d0 RS |
116 | (defvar locate-current-filter nil) |
117 | ||
d979dc2b SE |
118 | (defgroup locate nil |
119 | "Interface to the locate command." | |
120 | :prefix "locate-" | |
121 | :group 'external) | |
6aea3b07 | 122 | |
d979dc2b SE |
123 | (defcustom locate-command "locate" |
124 | "*The executable program used to search a database of files." | |
125 | :type 'string | |
126 | :group 'locate) | |
6aea3b07 | 127 | |
d979dc2b SE |
128 | (defvar locate-history-list nil |
129 | "The history list used by the \\[locate] command.") | |
6aea3b07 | 130 | |
83346ee8 PB |
131 | (defvar locate-grep-history-list nil |
132 | "The history list used by the \\[locate-with-filter] command.") | |
133 | ||
d979dc2b SE |
134 | (defcustom locate-make-command-line 'locate-default-make-command-line |
135 | "*Function used to create the locate command line." | |
136 | :type 'function | |
137 | :group 'locate) | |
138 | ||
139 | (defcustom locate-buffer-name "*Locate*" | |
140 | "*Name of the buffer to show results from the \\[locate] command." | |
141 | :type 'string | |
142 | :group 'locate) | |
143 | ||
144 | (defcustom locate-fcodes-file nil | |
be8bf2d0 RS |
145 | "*File name for the database of file names." |
146 | :type '(choice file (const nil)) | |
d979dc2b SE |
147 | :group 'locate) |
148 | ||
83346ee8 | 149 | (defcustom locate-header-face nil |
d979dc2b SE |
150 | "*Face used to highlight the locate header." |
151 | :type 'face | |
152 | :group 'locate) | |
6aea3b07 | 153 | |
271a87e8 LT |
154 | ;;;###autoload |
155 | (defcustom locate-ls-subdir-switches "-al" | |
156 | "`ls' switches for inserting subdirectories in `*Locate*' buffers. | |
34bb9b0a | 157 | This should contain the \"-l\" switch, but not the \"-F\" or \"-b\" switches." |
271a87e8 LT |
158 | :type 'string |
159 | :group 'locate | |
160 | :version "21.4") | |
161 | ||
be8bf2d0 RS |
162 | (defcustom locate-update-command "updatedb" |
163 | "The command used to update the locate database." | |
164 | :type 'string | |
165 | :group 'locate) | |
6aea3b07 | 166 | |
83346ee8 | 167 | (defcustom locate-prompt-for-command nil |
442c8150 | 168 | "If non-nil, the locate command prompts for a command to run. |
83346ee8 PB |
169 | Otherwise, that behavior is invoked via a prefix argument." |
170 | :group 'locate | |
171 | :type 'boolean | |
172 | ) | |
173 | ||
6aea3b07 RS |
174 | ;; Functions |
175 | ||
176 | (defun locate-default-make-command-line (search-string) | |
be8bf2d0 | 177 | (list locate-command search-string)) |
6aea3b07 | 178 | |
96c1776c PB |
179 | (defun locate-word-at-point () |
180 | (let ((pt (point))) | |
181 | (buffer-substring-no-properties | |
182 | (save-excursion | |
183 | (skip-chars-backward "-a-zA-Z0-9.") | |
184 | (point)) | |
185 | (save-excursion | |
186 | (skip-chars-forward "-a-zA-Z0-9.") | |
187 | (skip-chars-backward "." pt) | |
188 | (point))))) | |
189 | ||
1d96c2ff | 190 | ;;;###autoload |
8348e1f9 | 191 | (defun locate (search-string &optional filter) |
83346ee8 PB |
192 | "Run the program `locate', putting results in `*Locate*' buffer. |
193 | With prefix arg, prompt for the locate command to run." | |
6aea3b07 | 194 | (interactive |
83346ee8 | 195 | (list |
8348e1f9 PB |
196 | (if (or (and current-prefix-arg |
197 | (not locate-prompt-for-command)) | |
83346ee8 | 198 | (and (not current-prefix-arg) locate-prompt-for-command)) |
8348e1f9 PB |
199 | (let ((locate-cmd (funcall locate-make-command-line ""))) |
200 | (read-from-minibuffer | |
201 | "Run locate (like this): " | |
202 | (cons | |
203 | (concat (car locate-cmd) " " | |
204 | (mapconcat 'identity (cdr locate-cmd) " ")) | |
205 | (+ 2 (length (car locate-cmd)))) | |
206 | nil nil 'locate-history-list)) | |
fe8c7212 | 207 | (let* ((default (locate-word-at-point)) |
f1180544 | 208 | (input |
fe8c7212 RS |
209 | (read-from-minibuffer |
210 | (if (> (length default) 0) | |
211 | (format "Locate (default `%s'): " default) | |
212 | (format "Locate: ")) | |
213 | nil nil nil 'locate-history-list default t))) | |
214 | (and (equal input "") default | |
215 | (setq input default)) | |
216 | input)))) | |
217 | (if (equal search-string "") | |
c19813f3 | 218 | (error "Please specify a filename to search for")) |
be8bf2d0 | 219 | (let* ((locate-cmd-list (funcall locate-make-command-line search-string)) |
6aea3b07 RS |
220 | (locate-cmd (car locate-cmd-list)) |
221 | (locate-cmd-args (cdr locate-cmd-list)) | |
83346ee8 | 222 | (run-locate-command |
8348e1f9 PB |
223 | (or (and current-prefix-arg (not locate-prompt-for-command)) |
224 | (and (not current-prefix-arg) locate-prompt-for-command))) | |
be8bf2d0 | 225 | ) |
83346ee8 | 226 | |
6aea3b07 | 227 | ;; Find the Locate buffer |
be8bf2d0 RS |
228 | (save-window-excursion |
229 | (set-buffer (get-buffer-create locate-buffer-name)) | |
230 | (locate-mode) | |
271a87e8 LT |
231 | (let ((inhibit-read-only t)) |
232 | (erase-buffer) | |
83346ee8 | 233 | |
271a87e8 | 234 | (setq locate-current-filter filter) |
83346ee8 | 235 | |
271a87e8 LT |
236 | (if run-locate-command |
237 | (shell-command search-string locate-buffer-name) | |
238 | (apply 'call-process locate-cmd nil t nil locate-cmd-args)) | |
83346ee8 | 239 | |
271a87e8 LT |
240 | (and filter |
241 | (locate-filter-output filter)) | |
6aea3b07 | 242 | |
271a87e8 LT |
243 | (locate-do-setup search-string) |
244 | )) | |
be8bf2d0 RS |
245 | (and (not (string-equal (buffer-name) locate-buffer-name)) |
246 | (switch-to-buffer-other-window locate-buffer-name)) | |
83346ee8 | 247 | |
96c1776c | 248 | (run-hooks 'dired-mode-hook) |
271a87e8 | 249 | (dired-next-line 3) ;move to first matching file. |
83346ee8 | 250 | (run-hooks 'locate-post-command-hook) |
be8bf2d0 RS |
251 | ) |
252 | ) | |
6aea3b07 | 253 | |
1d96c2ff | 254 | ;;;###autoload |
6aea3b07 | 255 | (defun locate-with-filter (search-string filter) |
9be8f657 GM |
256 | "Run the locate command with a filter. |
257 | ||
258 | The filter is a regular expression. Only results matching the filter are | |
259 | shown; this is often useful to constrain a big search." | |
6aea3b07 | 260 | (interactive |
be8bf2d0 RS |
261 | (list (read-from-minibuffer "Locate: " nil nil |
262 | nil 'locate-history-list) | |
263 | (read-from-minibuffer "Filter: " nil nil | |
83346ee8 | 264 | nil 'locate-grep-history-list))) |
8348e1f9 | 265 | (locate search-string filter)) |
6aea3b07 RS |
266 | |
267 | (defun locate-filter-output (filter) | |
268 | "Filter output from the locate command." | |
269 | (goto-char (point-min)) | |
83346ee8 | 270 | (delete-non-matching-lines filter)) |
6aea3b07 RS |
271 | |
272 | (defvar locate-mode-map nil | |
273 | "Local keymap for Locate mode buffers.") | |
274 | (if locate-mode-map | |
275 | nil | |
276 | ||
277 | (require 'dired) | |
278 | ||
279 | (setq locate-mode-map (copy-keymap dired-mode-map)) | |
280 | ||
281 | ;; Undefine Useless Dired Menu bars | |
282 | (define-key locate-mode-map [menu-bar Dired] 'undefined) | |
283 | (define-key locate-mode-map [menu-bar subdir] 'undefined) | |
284 | ||
285 | (define-key locate-mode-map [menu-bar mark executables] 'undefined) | |
286 | (define-key locate-mode-map [menu-bar mark directory] 'undefined) | |
287 | (define-key locate-mode-map [menu-bar mark directories] 'undefined) | |
288 | (define-key locate-mode-map [menu-bar mark symlinks] 'undefined) | |
289 | ||
271a87e8 | 290 | (define-key locate-mode-map [M-mouse-2] 'locate-mouse-view-file) |
83346ee8 | 291 | (define-key locate-mode-map "\C-c\C-t" 'locate-tags) |
6aea3b07 | 292 | |
271a87e8 | 293 | (define-key locate-mode-map "l" 'locate-do-redisplay) |
83346ee8 PB |
294 | (define-key locate-mode-map "U" 'dired-unmark-all-files) |
295 | (define-key locate-mode-map "V" 'locate-find-directory) | |
6aea3b07 RS |
296 | ) |
297 | ||
298 | ;; This variable is used to indent the lines and then to search for | |
299 | ;; the file name | |
300 | (defconst locate-filename-indentation 4 | |
be8bf2d0 | 301 | "The amount of indentation for each file.") |
6aea3b07 | 302 | |
6aea3b07 RS |
303 | (defun locate-get-file-positions () |
304 | (save-excursion | |
be8bf2d0 RS |
305 | (end-of-line) |
306 | (let ((eol (point))) | |
307 | (beginning-of-line) | |
83346ee8 | 308 | |
be8bf2d0 RS |
309 | ;; Assumes names end at the end of the line |
310 | (forward-char locate-filename-indentation) | |
311 | (list (point) eol)))) | |
6aea3b07 RS |
312 | |
313 | ;; From SQL-mode | |
be8bf2d0 | 314 | (defun locate-current-line-number () |
6aea3b07 | 315 | "Return the current line number, as an integer." |
6aea3b07 RS |
316 | (+ (count-lines (point-min) (point)) |
317 | (if (eq (current-column) 0) | |
318 | 1 | |
319 | 0))) | |
320 | ||
321 | (defun locate-get-filename () | |
322 | (let ((pos (locate-get-file-positions)) | |
be8bf2d0 | 323 | (lineno (locate-current-line-number))) |
83346ee8 PB |
324 | (and (not (eq lineno 1)) |
325 | (not (eq lineno 2)) | |
6aea3b07 RS |
326 | (buffer-substring (elt pos 0) (elt pos 1))))) |
327 | ||
271a87e8 LT |
328 | (defun locate-main-listing-line-p () |
329 | "Return t if current line contains a file name listed by locate. | |
330 | This function returns nil if the current line either contains no | |
331 | file name or is inside a subdirectory." | |
332 | (save-excursion | |
333 | (forward-line 0) | |
334 | (looking-at (concat "." | |
335 | (make-string (1- locate-filename-indentation) ?\ ) | |
336 | "\\(/\\|[A-Za-z]:\\)")))) | |
337 | ||
83346ee8 | 338 | (defun locate-mouse-view-file (event) |
6aea3b07 | 339 | "In Locate mode, view a file, using the mouse." |
83346ee8 | 340 | (interactive "@e") |
6aea3b07 RS |
341 | (save-excursion |
342 | (goto-char (posn-point (event-start event))) | |
271a87e8 LT |
343 | (if (locate-main-listing-line-p) |
344 | (view-file (locate-get-filename)) | |
345 | (message "This command only works inside main listing.")))) | |
6aea3b07 RS |
346 | |
347 | ;; Define a mode for locate | |
348 | ;; Default directory is set to "/" so that dired commands, which | |
349 | ;; expect to be in a tree, will work properly | |
350 | (defun locate-mode () | |
442c8150 | 351 | "Major mode for the `*Locate*' buffer made by \\[locate]. |
271a87e8 | 352 | \\<locate-mode-map>\ |
442c8150 LT |
353 | In that buffer, you can use almost all the usual dired bindings. |
354 | \\[locate-find-directory] visits the directory of the file on the current line. | |
355 | ||
271a87e8 LT |
356 | Operating on listed files works, but does not always |
357 | automatically update the buffer as in ordinary Dired. | |
358 | This is true both for the main listing and for subdirectories. | |
359 | Reverting the buffer using \\[revert-buffer] deletes all subdirectories. | |
360 | Specific `locate-mode' commands, such as \\[locate-find-directory], | |
361 | do not work in subdirectories. | |
362 | ||
442c8150 | 363 | \\{locate-mode-map}" |
271a87e8 | 364 | ;; Not to be called interactively. |
6aea3b07 | 365 | (kill-all-local-variables) |
271a87e8 | 366 | ;; Avoid clobbering this variable |
83346ee8 | 367 | (make-local-variable 'dired-subdir-alist) |
6aea3b07 RS |
368 | (use-local-map locate-mode-map) |
369 | (setq major-mode 'locate-mode | |
370 | mode-name "Locate" | |
271a87e8 LT |
371 | default-directory "/" |
372 | buffer-read-only t | |
373 | selective-display t) | |
83346ee8 | 374 | (dired-alist-add-1 default-directory (point-min-marker)) |
271a87e8 LT |
375 | (set (make-local-variable 'dired-directory) "/") |
376 | (set (make-local-variable 'dired-subdir-switches) locate-ls-subdir-switches) | |
377 | (setq dired-switches-alist nil) | |
5c6a8dfe | 378 | (make-local-variable 'dired-move-to-filename-regexp) |
83346ee8 | 379 | ;; This should support both Unix and Windoze style names |
5c6a8dfe | 380 | (setq dired-move-to-filename-regexp |
271a87e8 | 381 | (concat "^." |
83346ee8 | 382 | (make-string (1- locate-filename-indentation) ?\ ) |
271a87e8 LT |
383 | "\\(/\\|[A-Za-z]:\\)\\|" |
384 | (default-value 'dired-move-to-filename-regexp))) | |
5c6a8dfe RS |
385 | (make-local-variable 'dired-actual-switches) |
386 | (setq dired-actual-switches "") | |
387 | (make-local-variable 'dired-permission-flags-regexp) | |
83346ee8 PB |
388 | (setq dired-permission-flags-regexp |
389 | (concat "^.\\(" | |
390 | (make-string (1- locate-filename-indentation) ?\ ) | |
271a87e8 LT |
391 | "\\)\\|" |
392 | (default-value 'dired-permission-flags-regexp))) | |
be8bf2d0 | 393 | (make-local-variable 'revert-buffer-function) |
83346ee8 | 394 | (setq revert-buffer-function 'locate-update) |
271a87e8 | 395 | (set (make-local-variable 'page-delimiter) "\n\n") |
6aea3b07 RS |
396 | (run-hooks 'locate-mode-hook)) |
397 | ||
8348e1f9 PB |
398 | (defun locate-do-setup (search-string) |
399 | (goto-char (point-min)) | |
400 | (save-excursion | |
83346ee8 | 401 | |
8348e1f9 PB |
402 | ;; Nothing returned from locate command? |
403 | (and (eobp) | |
404 | (progn | |
405 | (kill-buffer locate-buffer-name) | |
406 | (if locate-current-filter | |
407 | (error "Locate: no match for %s in database using filter %s" | |
408 | search-string locate-current-filter) | |
409 | (error "Locate: no match for %s in database" search-string)))) | |
83346ee8 | 410 | |
8348e1f9 | 411 | (locate-insert-header search-string) |
83346ee8 | 412 | |
8348e1f9 PB |
413 | (while (not (eobp)) |
414 | (insert-char ?\ locate-filename-indentation t) | |
415 | (locate-set-properties) | |
416 | (forward-line 1))) | |
417 | (goto-char (point-min))) | |
6aea3b07 RS |
418 | |
419 | (defun locate-set-properties () | |
420 | (save-excursion | |
421 | (let ((pos (locate-get-file-positions))) | |
83346ee8 | 422 | (dired-insert-set-properties (elt pos 0) (elt pos 1))))) |
6aea3b07 RS |
423 | |
424 | (defun locate-insert-header (search-string) | |
271a87e8 LT |
425 | ;; There needs to be a space before `Matches, because otherwise, |
426 | ;; `*!" would erase the `M'. We can not use two spaces, or the line | |
427 | ;; would mistakenly fit `dired-subdir-regexp'. | |
428 | (let ((locate-format-string " /:\n Matches for %s") | |
6aea3b07 RS |
429 | (locate-regexp-match |
430 | (concat " *Matches for \\(" (regexp-quote search-string) "\\)")) | |
431 | (locate-format-args (list search-string)) | |
432 | ) | |
83346ee8 | 433 | |
be8bf2d0 | 434 | (and locate-fcodes-file |
6aea3b07 RS |
435 | (setq locate-format-string |
436 | (concat locate-format-string " in %s") | |
437 | locate-regexp-match | |
438 | (concat locate-regexp-match | |
439 | " in \\(" | |
440 | (regexp-quote locate-fcodes-file) | |
441 | "\\)") | |
442 | locate-format-args | |
443 | (append (list locate-fcodes-file) locate-format-args))) | |
444 | ||
be8bf2d0 | 445 | (and locate-current-filter |
6aea3b07 RS |
446 | (setq locate-format-string |
447 | (concat locate-format-string " using filter %s") | |
448 | locate-regexp-match | |
449 | (concat locate-regexp-match | |
450 | " using filter " | |
451 | "\\(" | |
452 | (regexp-quote locate-current-filter) | |
453 | "\\)") | |
454 | locate-format-args | |
455 | (append (list locate-current-filter) locate-format-args))) | |
83346ee8 | 456 | |
6aea3b07 | 457 | (setq locate-format-string |
5421b899 | 458 | (concat locate-format-string ":\n\n") |
6aea3b07 | 459 | locate-regexp-match |
5421b899 | 460 | (concat locate-regexp-match ":\n")) |
83346ee8 | 461 | |
5c6a8dfe | 462 | (insert (apply 'format locate-format-string (reverse locate-format-args))) |
83346ee8 | 463 | |
6aea3b07 RS |
464 | (save-excursion |
465 | (goto-char (point-min)) | |
271a87e8 | 466 | (forward-line 1) |
6aea3b07 RS |
467 | (if (not (looking-at locate-regexp-match)) |
468 | nil | |
469 | (add-text-properties (match-beginning 1) (match-end 1) | |
470 | (list 'face locate-header-face)) | |
471 | (and (match-beginning 2) | |
472 | (add-text-properties (match-beginning 2) (match-end 2) | |
473 | (list 'face locate-header-face))) | |
474 | (and (match-beginning 3) | |
475 | (add-text-properties (match-beginning 3) (match-end 3) | |
476 | (list 'face locate-header-face))) | |
477 | )))) | |
478 | ||
479 | (defun locate-tags () | |
480 | "Visit a tags table in `*Locate*' mode." | |
481 | (interactive) | |
271a87e8 LT |
482 | (if (locate-main-listing-line-p) |
483 | (let ((tags-table (locate-get-filename))) | |
484 | (and (y-or-n-p (format "Visit tags table %s? " tags-table)) | |
485 | (visit-tags-table tags-table))) | |
486 | (message "This command only works inside main listing."))) | |
be8bf2d0 RS |
487 | |
488 | ;; From Stephen Eglen <stephen@cns.ed.ac.uk> | |
489 | (defun locate-update (ignore1 ignore2) | |
490 | "Update the locate database. | |
491 | Database is updated using the shell command in `locate-update-command'." | |
492 | (let ((str (car locate-history-list))) | |
493 | (cond ((yes-or-no-p "Update locate database (may take a few seconds)? ") | |
494 | (shell-command locate-update-command) | |
8348e1f9 | 495 | (locate str))))) |
83346ee8 PB |
496 | |
497 | ;;; Modified three functions from `dired.el': | |
498 | ;;; dired-find-directory, | |
499 | ;;; dired-find-directory-other-window | |
500 | ;;; dired-get-filename | |
501 | ||
502 | (defun locate-find-directory () | |
503 | "Visit the directory of the file mentioned on this line." | |
504 | (interactive) | |
271a87e8 LT |
505 | (if (locate-main-listing-line-p) |
506 | (let ((directory-name (locate-get-dirname))) | |
507 | (if (file-directory-p directory-name) | |
508 | (find-file directory-name) | |
509 | (if (file-symlink-p directory-name) | |
510 | (error "Directory is a symlink to a nonexistent target") | |
511 | (error "Directory no longer exists; run `updatedb' to update database")))) | |
512 | (message "This command only works inside main listing."))) | |
83346ee8 PB |
513 | |
514 | (defun locate-find-directory-other-window () | |
515 | "Visit the directory of the file named on this line in other window." | |
516 | (interactive) | |
517 | (find-file-other-window (locate-get-dirname))) | |
518 | ||
519 | (defun locate-get-dirname () | |
520 | "Return the directory name of the file mentioned on this line." | |
521 | (let (file (filepos (locate-get-file-positions))) | |
522 | (if (setq file (buffer-substring (nth 0 filepos) (nth 1 filepos))) | |
523 | (progn | |
524 | ;; Get rid of the mouse-face property that file names have. | |
525 | (set-text-properties 0 (length file) nil file) | |
526 | (setq file (file-name-directory file)) | |
527 | ;; Unquote names quoted by ls or by dired-insert-directory. | |
528 | ;; Using read to unquote is much faster than substituting | |
529 | ;; \007 (4 chars) -> ^G (1 char) etc. in a lisp loop. | |
530 | (setq file | |
531 | (read | |
532 | (concat "\"" | |
533 | ;; some ls -b don't escape quotes, argh! | |
534 | ;; This is not needed for GNU ls, though. | |
535 | (or (dired-string-replace-match | |
536 | "\\([^\\]\\|\\`\\)\"" file "\\1\\\\\"" nil t) | |
537 | file) | |
538 | "\""))))) | |
539 | (and file buffer-file-coding-system | |
540 | (not file-name-coding-system) | |
541 | (setq file (encode-coding-string file buffer-file-coding-system))) | |
542 | file)) | |
543 | ||
544 | ;; Only for GNU locate | |
545 | (defun locate-in-alternate-database (search-string database) | |
546 | "Run the GNU locate command, using an alternate database." | |
547 | (interactive | |
548 | (list | |
549 | (progn | |
550 | ;; (require 'locate) | |
551 | (read-from-minibuffer "Locate: " nil nil | |
552 | nil 'locate-history-list)) | |
553 | (read-file-name "Locate using Database: " ) | |
554 | )) | |
555 | (or (file-exists-p database) | |
556 | (error "Database file %s does not exist" database)) | |
557 | (let ((locate-make-command-line | |
558 | (function (lambda (string) | |
559 | (cons locate-command | |
560 | (list (concat "--database=" | |
561 | (expand-file-name database)) | |
562 | string)))))) | |
8348e1f9 | 563 | (locate search-string))) |
6aea3b07 | 564 | |
271a87e8 LT |
565 | (defun locate-do-redisplay (&optional arg test-for-subdir) |
566 | "Like `dired-do-redisplay', but adapted for `*Locate*' buffers." | |
567 | (interactive "P\np") | |
568 | (if (string= (dired-current-directory) "/") | |
569 | (message "This command only works in subdirectories.") | |
570 | (let ((dired-actual-switches locate-ls-subdir-switches)) | |
571 | (dired-do-redisplay arg test-for-subdir)))) | |
572 | ||
6aea3b07 RS |
573 | (provide 'locate) |
574 | ||
ab5796a9 | 575 | ;;; arch-tag: 60c4d098-b5d5-4b3c-a3e0-51a2e9f43898 |
6aea3b07 | 576 | ;;; locate.el ends here |