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1164bae9 ER |
1 | ;;; finder.el --- topic & keyword-based code finder |
2 | ||
228b7396 GM |
3 | ;; Copyright (C) 1992, 1997, 1998, 1999, 2001, 2002, 2003, 2004, 2005, |
4 | ;; 2006, 2007, 2008 Free Software Foundation, Inc. | |
1164bae9 ER |
5 | |
6 | ;; Author: Eric S. Raymond <esr@snark.thyrsus.com> | |
7 | ;; Created: 16 Jun 1992 | |
8 | ;; Version: 1.0 | |
9 | ;; Keywords: help | |
10 | ||
11 | ;; This file is part of GNU Emacs. | |
12 | ||
eb3fa2cf | 13 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
1164bae9 | 14 | ;; it under the terms of the GNU General Public License as published by |
eb3fa2cf GM |
15 | ;; the Free Software Foundation, either version 3 of the License, or |
16 | ;; (at your option) any later version. | |
1164bae9 ER |
17 | |
18 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
19 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | ;; GNU General Public License for more details. | |
22 | ||
23 | ;; You should have received a copy of the GNU General Public License | |
eb3fa2cf | 24 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
1164bae9 | 25 | |
101dad14 | 26 | ;;; Commentary: |
1164bae9 ER |
27 | |
28 | ;; This mode uses the Keywords library header to provide code-finding | |
29 | ;; services by keyword. | |
30 | ;; | |
31 | ;; Things to do: | |
32 | ;; 1. Support multiple keywords per search. This could be extremely hairy; | |
33 | ;; there doesn't seem to be any way to get completing-read to exit on | |
34 | ;; an EOL with no substring pending, which is what we'd want to end the loop. | |
35 | ;; 2. Search by string in synopsis line? | |
36 | ;; 3. Function to check finder-package-info for unknown keywords. | |
37 | ||
38 | ;;; Code: | |
39 | ||
40 | (require 'lisp-mnt) | |
24d30c03 | 41 | (require 'find-func) ;for find-library(-suffixes) |
f0c4433f SM |
42 | ;; Use `load' rather than `require' so that it doesn't get loaded |
43 | ;; during byte-compilation (at which point it might be missing). | |
2e819a08 | 44 | (load "finder-inf" t t) |
1164bae9 | 45 | |
4f451c3f DL |
46 | ;; These are supposed to correspond to top-level customization groups, |
47 | ;; says rms. | |
1164bae9 ER |
48 | (defvar finder-known-keywords |
49 | '( | |
dea24479 | 50 | (abbrev . "abbreviation handling, typing shortcuts, macros") |
f06f7416 | 51 | ;; Too specific: |
be2c35e4 | 52 | (bib . "code related to the `bib' bibliography processor") |
68f8f37f | 53 | (c . "support for the C language and related languages") |
1164bae9 | 54 | (calendar . "calendar and time management support") |
e9571d2a | 55 | (comm . "communications, networking, remote access to files") |
35e9c644 | 56 | (convenience . "convenience features for faster editing") |
dde4a5bb | 57 | (data . "support for editing files of data") |
1164bae9 ER |
58 | (docs . "support for Emacs documentation") |
59 | (emulations . "emulations of other editors") | |
60 | (extensions . "Emacs Lisp language extensions") | |
be2c35e4 | 61 | (faces . "support for multiple fonts") |
f06f7416 | 62 | (files . "support for editing and manipulating files") |
f1aabce0 | 63 | (frames . "support for Emacs frames and window systems") |
1164bae9 ER |
64 | (games . "games, jokes and amusements") |
65 | (hardware . "support for interfacing with exotic hardware") | |
66 | (help . "support for on-line help systems") | |
f1aabce0 | 67 | (hypermedia . "support for links between text or other media types") |
14931973 | 68 | (i18n . "internationalization and alternate character-set support") |
1164bae9 ER |
69 | (internal . "code for Emacs internals, build process, defaults") |
70 | (languages . "specialized modes for editing programming languages") | |
71 | (lisp . "Lisp support, including Emacs Lisp") | |
72 | (local . "code local to your site") | |
73 | (maint . "maintenance aids for the Emacs development group") | |
74 | (mail . "modes for electronic-mail handling") | |
be2c35e4 RS |
75 | (matching . "various sorts of searching and matching") |
76 | (mouse . "mouse support") | |
1226dd0b | 77 | (multimedia . "images and sound support") |
1164bae9 | 78 | (news . "support for netnews reading and posting") |
f1aabce0 RS |
79 | (oop . "support for object-oriented programming") |
80 | (outlines . "support for hierarchical outlining") | |
1164bae9 ER |
81 | (processes . "process, subshell, compilation, and job control support") |
82 | (terminals . "support for terminal types") | |
dde4a5bb | 83 | (tex . "supporting code for the TeX formatter") |
1164bae9 | 84 | (tools . "programming tools") |
dde4a5bb | 85 | (unix . "front-ends/assistants for, or emulators of, UNIX-like features") |
f06f7416 DL |
86 | ;; Not a custom group and not currently useful. |
87 | ;; (vms . "support code for vms") | |
1164bae9 ER |
88 | (wp . "word processing") |
89 | )) | |
90 | ||
79760fb2 SM |
91 | (defvar finder-mode-map |
92 | (let ((map (make-sparse-keymap))) | |
93 | (define-key map " " 'finder-select) | |
94 | (define-key map "f" 'finder-select) | |
24bdbffe | 95 | (define-key map [follow-link] 'mouse-face) |
79760fb2 SM |
96 | (define-key map [mouse-2] 'finder-mouse-select) |
97 | (define-key map "\C-m" 'finder-select) | |
98 | (define-key map "?" 'finder-summary) | |
c9fdebdf RS |
99 | (define-key map "n" 'next-line) |
100 | (define-key map "p" 'previous-line) | |
79760fb2 SM |
101 | (define-key map "q" 'finder-exit) |
102 | (define-key map "d" 'finder-list-keywords) | |
103 | map)) | |
e141acb3 | 104 | |
89e2d476 SM |
105 | (defvar finder-mode-syntax-table |
106 | (let ((st (make-syntax-table emacs-lisp-mode-syntax-table))) | |
107 | (modify-syntax-entry ?\; ". " st) | |
108 | st) | |
109 | "Syntax table used while in `finder-mode'.") | |
110 | ||
111 | (defvar finder-font-lock-keywords | |
54e05660 | 112 | '(("`\\([^'`]+\\)'" 1 font-lock-constant-face prepend)) |
89e2d476 SM |
113 | "Font-lock keywords for Finder mode.") |
114 | ||
228b7396 GM |
115 | (defvar finder-headmark nil |
116 | "Internal finder-mode variable, local in finder buffer.") | |
101dad14 | 117 | |
1164bae9 ER |
118 | ;;; Code for regenerating the keyword list. |
119 | ||
120 | (defvar finder-package-info nil | |
121 | "Assoc list mapping file names to description & keyword lists.") | |
122 | ||
9bd0d71a | 123 | (defvar generated-finder-keywords-file "finder-inf.el" |
228b7396 GM |
124 | "The function `finder-compile-keywords' writes keywords into this file.") |
125 | ||
126 | ;; Skip autogenerated files, because they will never contain anything | |
127 | ;; useful, and because in parallel builds of Emacs they may get | |
128 | ;; modified while we are trying to read them. | |
129 | ;; http://lists.gnu.org/archive/html/emacs-pretest-bug/2007-01/msg00469.html | |
276f10b7 GM |
130 | ;; ldefs-boot is not auto-generated, but has nothing useful. |
131 | (defvar finder-no-scan-regexp "\\(^\\.#\\|\\(loaddefs\\|ldefs-boot\\|\ | |
132 | cus-load\\|finder-inf\\|esh-groups\\|subdirs\\)\\.el$\\)" | |
228b7396 GM |
133 | "Regexp matching file names not to scan for keywords.") |
134 | ||
135 | (autoload 'autoload-rubric "autoload") | |
9bd0d71a | 136 | |
1164bae9 | 137 | (defun finder-compile-keywords (&rest dirs) |
9bd0d71a | 138 | "Regenerate the keywords association list into `generated-finder-keywords-file'. |
2d212d87 DL |
139 | Optional arguments DIRS are a list of Emacs Lisp directories to compile from; |
140 | no arguments compiles from `load-path'." | |
1164bae9 | 141 | (save-excursion |
54e05660 GM |
142 | (find-file generated-finder-keywords-file) |
143 | (setq buffer-undo-list t) | |
144 | (erase-buffer) | |
145 | (insert (autoload-rubric generated-finder-keywords-file | |
146 | "keyword-to-package mapping")) | |
147 | (search-backward "\f") | |
148 | (insert "(setq finder-package-info '(\n") | |
67f63a7a | 149 | (let (processed summary keywords) |
3731290f | 150 | (mapc |
e6fb4d11 | 151 | (lambda (d) |
5b64ebe8 RS |
152 | (when (file-exists-p (directory-file-name d)) |
153 | (message "Directory %s" d) | |
228b7396 | 154 | (mapc |
2d212d87 | 155 | (lambda (f) |
228b7396 GM |
156 | ;; FIXME should this not be using (expand-file-name f d)? |
157 | (unless (or (member f processed) | |
158 | (string-match finder-no-scan-regexp f)) | |
159 | (setq processed (cons f processed)) | |
160 | (with-temp-buffer | |
161 | (insert-file-contents (expand-file-name f d)) | |
162 | (setq summary (lm-synopsis) | |
67f63a7a | 163 | keywords (lm-keywords-list))) |
228b7396 GM |
164 | (insert |
165 | (format " (\"%s\"\n " | |
166 | (if (string-match "\\.\\(gz\\|Z\\)$" f) | |
167 | (file-name-sans-extension f) | |
168 | f))) | |
169 | (prin1 summary (current-buffer)) | |
170 | (insert "\n ") | |
67f63a7a GM |
171 | (princ keywords (current-buffer)) |
172 | (insert ")\n"))) | |
228b7396 GM |
173 | (directory-files d nil |
174 | ;; Allow compressed files also. FIXME: | |
175 | ;; generalize this, especially for | |
176 | ;; MS-DOG-type filenames. | |
177 | "^[^=].*\\.el\\(\\.\\(gz\\|Z\\)\\)?$" | |
178 | )))) | |
54e05660 GM |
179 | (or dirs load-path))) |
180 | (insert " ))\n") | |
181 | (eval-buffer) ; so we get the new keyword list immediately | |
182 | (basic-save-buffer))) | |
1164bae9 | 183 | |
1c6425ea RS |
184 | (defun finder-compile-keywords-make-dist () |
185 | "Regenerate `finder-inf.el' for the Emacs distribution." | |
644f58eb RS |
186 | (apply 'finder-compile-keywords command-line-args-left) |
187 | (kill-emacs)) | |
1c6425ea | 188 | |
1164bae9 ER |
189 | ;;; Now the retrieval code |
190 | ||
e6fb4d11 | 191 | (defun finder-insert-at-column (column &rest strings) |
eb4df0c3 | 192 | "Insert, at column COLUMN, other args STRINGS." |
ff524b84 | 193 | (if (>= (current-column) column) (insert "\n")) |
eb4df0c3 | 194 | (move-to-column column t) |
e6fb4d11 EN |
195 | (apply 'insert strings)) |
196 | ||
f06f7416 DL |
197 | (defvar finder-help-echo nil) |
198 | ||
eb4df0c3 | 199 | (defun finder-mouse-face-on-line () |
f06f7416 | 200 | "Put `mouse-face' and `help-echo' properties on the previous line." |
eb4df0c3 | 201 | (save-excursion |
bf8aa901 | 202 | (forward-line -1) |
54e05660 GM |
203 | ;; If finder-insert-at-column moved us to a new line, go back one more. |
204 | (if (looking-at "[ \t]") (forward-line -1)) | |
f06f7416 DL |
205 | (unless finder-help-echo |
206 | (setq finder-help-echo | |
207 | (let* ((keys1 (where-is-internal 'finder-select | |
208 | finder-mode-map)) | |
209 | (keys (nconc (where-is-internal | |
210 | 'finder-mouse-select finder-mode-map) | |
211 | keys1))) | |
212 | (concat (mapconcat 'key-description keys ", ") | |
213 | ": select item")))) | |
214 | (add-text-properties | |
215 | (line-beginning-position) (line-end-position) | |
216 | '(mouse-face highlight | |
217 | help-echo finder-help-echo)))) | |
eb4df0c3 | 218 | |
706239c7 | 219 | ;;;###autoload |
101dad14 ER |
220 | (defun finder-list-keywords () |
221 | "Display descriptions of the keywords in the Finder buffer." | |
222 | (interactive) | |
5acc847d RS |
223 | (if (get-buffer "*Finder*") |
224 | (pop-to-buffer "*Finder*") | |
228b7396 | 225 | (pop-to-buffer (get-buffer-create "*Finder*")) |
5acc847d | 226 | (finder-mode) |
228b7396 GM |
227 | (setq buffer-read-only nil |
228 | buffer-undo-list t) | |
5acc847d | 229 | (erase-buffer) |
f06f7416 | 230 | (mapc |
5acc847d RS |
231 | (lambda (assoc) |
232 | (let ((keyword (car assoc))) | |
233 | (insert (symbol-name keyword)) | |
234 | (finder-insert-at-column 14 (concat (cdr assoc) "\n")) | |
eb4df0c3 | 235 | (finder-mouse-face-on-line))) |
5acc847d RS |
236 | finder-known-keywords) |
237 | (goto-char (point-min)) | |
228b7396 GM |
238 | (setq finder-headmark (point) |
239 | buffer-read-only t) | |
5acc847d RS |
240 | (set-buffer-modified-p nil) |
241 | (balance-windows) | |
242 | (finder-summary))) | |
101dad14 ER |
243 | |
244 | (defun finder-list-matches (key) | |
2d7b0db7 | 245 | (pop-to-buffer (set-buffer (get-buffer-create "*Finder Category*"))) |
5acc847d | 246 | (finder-mode) |
228b7396 GM |
247 | (setq buffer-read-only nil |
248 | buffer-undo-list t) | |
101dad14 ER |
249 | (erase-buffer) |
250 | (let ((id (intern key))) | |
251 | (insert | |
252 | "The following packages match the keyword `" key "':\n\n") | |
14931973 | 253 | (setq finder-headmark (point)) |
f06f7416 | 254 | (mapc |
e6fb4d11 | 255 | (lambda (x) |
54e05660 GM |
256 | (when (memq id (cadr (cdr x))) |
257 | (insert (car x)) | |
258 | (finder-insert-at-column 16 (concat (cadr x) "\n")) | |
259 | (finder-mouse-face-on-line))) | |
101dad14 ER |
260 | finder-package-info) |
261 | (goto-char (point-min)) | |
262 | (forward-line) | |
263 | (setq buffer-read-only t) | |
264 | (set-buffer-modified-p nil) | |
265 | (shrink-window-if-larger-than-buffer) | |
266 | (finder-summary))) | |
267 | ||
54e05660 GM |
268 | (define-button-type 'finder-xref 'action #'finder-goto-xref) |
269 | ||
270 | (defun finder-goto-xref (button) | |
271 | "Jump to a lisp file for the BUTTON at point." | |
272 | (let* ((file (button-get button 'xref)) | |
273 | (lib (locate-library file))) | |
274 | (if lib (finder-commentary lib) | |
275 | (message "Unable to locate `%s'" file)))) | |
276 | ||
706239c7 | 277 | ;;;###autoload |
101dad14 | 278 | (defun finder-commentary (file) |
2d212d87 DL |
279 | "Display FILE's commentary section. |
280 | FILE should be in a form suitable for passing to `locate-library'." | |
24d30c03 SM |
281 | (interactive |
282 | (list | |
283 | (completing-read "Library name: " | |
6a021917 SM |
284 | (apply-partially 'locate-file-completion-table |
285 | (or find-function-source-path load-path) | |
286 | (find-library-suffixes))))) | |
228b7396 GM |
287 | (let ((str (lm-commentary (find-library-name file)))) |
288 | (or str (error "Can't find any Commentary section")) | |
63fe0a98 RS |
289 | ;; This used to use *Finder* but that would clobber the |
290 | ;; directory of categories. | |
61e938eb | 291 | (delete-other-windows) |
63fe0a98 | 292 | (pop-to-buffer "*Finder-package*") |
228b7396 GM |
293 | (setq buffer-read-only nil |
294 | buffer-undo-list t) | |
101dad14 ER |
295 | (erase-buffer) |
296 | (insert str) | |
297 | (goto-char (point-min)) | |
298 | (delete-blank-lines) | |
299 | (goto-char (point-max)) | |
300 | (delete-blank-lines) | |
301 | (goto-char (point-min)) | |
302 | (while (re-search-forward "^;+ ?" nil t) | |
303 | (replace-match "" nil nil)) | |
304 | (goto-char (point-min)) | |
54e05660 GM |
305 | (while (re-search-forward "\\<\\([-[:alnum:]]+\\.el\\)\\>" nil t) |
306 | (if (locate-library (match-string 1)) | |
307 | (make-text-button (match-beginning 1) (match-end 1) | |
308 | 'xref (match-string-no-properties 1) | |
309 | 'help-echo "Read this file's commentary" | |
310 | :type 'finder-xref))) | |
311 | (goto-char (point-min)) | |
101dad14 ER |
312 | (setq buffer-read-only t) |
313 | (set-buffer-modified-p nil) | |
314 | (shrink-window-if-larger-than-buffer) | |
8f713f53 | 315 | (finder-mode) |
e6fb4d11 | 316 | (finder-summary))) |
101dad14 ER |
317 | |
318 | (defun finder-current-item () | |
62832105 EZ |
319 | (let ((key (save-excursion |
320 | (beginning-of-line) | |
321 | (current-word)))) | |
322 | (if (or (and finder-headmark (< (point) finder-headmark)) | |
228b7396 | 323 | (zerop (length key))) |
62832105 EZ |
324 | (error "No keyword or filename on this line") |
325 | key))) | |
101dad14 ER |
326 | |
327 | (defun finder-select () | |
eb4df0c3 | 328 | "Select item on current line in a finder buffer." |
101dad14 ER |
329 | (interactive) |
330 | (let ((key (finder-current-item))) | |
f3b330d6 KH |
331 | (if (string-match "\\.el$" key) |
332 | (finder-commentary key) | |
333 | (finder-list-matches key)))) | |
334 | ||
335 | (defun finder-mouse-select (event) | |
eb4df0c3 | 336 | "Select item in a finder buffer with the mouse." |
f3b330d6 KH |
337 | (interactive "e") |
338 | (save-excursion | |
eb4df0c3 DL |
339 | (set-buffer (window-buffer (posn-window (event-start event)))) |
340 | (goto-char (posn-point (event-start event))) | |
341 | (finder-select))) | |
101dad14 | 342 | |
706239c7 | 343 | ;;;###autoload |
1164bae9 ER |
344 | (defun finder-by-keyword () |
345 | "Find packages matching a given keyword." | |
346 | (interactive) | |
101dad14 ER |
347 | (finder-list-keywords)) |
348 | ||
228b7396 | 349 | (define-derived-mode finder-mode nil "Finder" |
101dad14 | 350 | "Major mode for browsing package documentation. |
527da106 | 351 | \\<finder-mode-map> |
101dad14 | 352 | \\[finder-select] more help for the item on the current line |
2d212d87 | 353 | \\[finder-exit] exit Finder mode and kill the Finder buffer." |
228b7396 | 354 | :syntax-table finder-mode-syntax-table |
89e2d476 SM |
355 | (setq font-lock-defaults '(finder-font-lock-keywords nil nil |
356 | (("+-*/.<>=!?$%_&~^:@" . "w")) nil)) | |
228b7396 | 357 | (set (make-local-variable 'finder-headmark) nil)) |
101dad14 ER |
358 | |
359 | (defun finder-summary () | |
360 | "Summarize basic Finder commands." | |
361 | (interactive) | |
90f061c7 | 362 | (message "%s" |
527da106 | 363 | (substitute-command-keys |
eb4df0c3 DL |
364 | "\\<finder-mode-map>\\[finder-select] = select, \ |
365 | \\[finder-mouse-select] = select, \\[finder-list-keywords] = to \ | |
366 | finder directory, \\[finder-exit] = quit, \\[finder-summary] = help"))) | |
f5a16823 | 367 | |
101dad14 | 368 | (defun finder-exit () |
89e2d476 | 369 | "Exit Finder mode. |
228b7396 | 370 | Delete the window and kill all Finder-related buffers." |
101dad14 | 371 | (interactive) |
228b7396 GM |
372 | (ignore-errors (delete-window)) |
373 | (dolist (buff '("*Finder*" "*Finder-package*" "*Finder Category*")) | |
374 | (and (get-buffer buff) (kill-buffer buff)))) | |
1164bae9 | 375 | |
6a7ceddc | 376 | \f |
1164bae9 ER |
377 | (provide 'finder) |
378 | ||
bf8aa901 | 379 | ;; arch-tag: ec85ff49-8cb8-41f5-a63f-9131d53ce2c5 |
1164bae9 | 380 | ;;; finder.el ends here |