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c8472948 | 1 | ;;; etags.el --- etags facility for Emacs |
8c8f9bc1 | 2 | |
04528cda | 3 | ;; Copyright (C) 1985, 86, 88, 89, 92, 93, 94, 95, 96, 98, 2000, 2001 |
bf349f36 | 4 | ;; Free Software Foundation, Inc. |
ff1f0fa6 | 5 | |
5762abec | 6 | ;; Author: Roland McGrath <roland@gnu.org> |
d6b8c85b | 7 | ;; Maintainer: FSF |
3a801d0c ER |
8 | ;; Keywords: tools |
9 | ||
ff1f0fa6 JB |
10 | ;; This file is part of GNU Emacs. |
11 | ||
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 | |
daa37602 | 14 | ;; the Free Software Foundation; either version 2, or (at your option) |
ff1f0fa6 JB |
15 | ;; any later version. |
16 | ||
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. | |
21 | ||
22 | ;; You should have received a copy of the GNU General Public License | |
b578f267 EN |
23 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
24 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
25 | ;; Boston, MA 02111-1307, USA. | |
ff1f0fa6 | 26 | |
6010664f SM |
27 | ;;; Commentary: |
28 | ||
e5167999 ER |
29 | ;;; Code: |
30 | ||
b533f3c5 | 31 | (require 'ring) |
89228b63 | 32 | (require 'button) |
b533f3c5 | 33 | |
c086701a | 34 | ;;;###autoload |
b6176f64 RM |
35 | (defvar tags-file-name nil |
36 | "*File name of tags table. | |
9708f7fc | 37 | To switch to a new tags table, setting this variable is sufficient. |
b6176f64 | 38 | If you set this variable, do not also set `tags-table-list'. |
9708f7fc | 39 | Use the `etags' program to make a tags table file.") |
b6176f64 | 40 | ;; Make M-x set-variable tags-file-name like M-x visit-tags-table. |
9ef8b0d6 | 41 | ;;;###autoload (put 'tags-file-name 'variable-interactive "fVisit tags table: ") |
9708f7fc | 42 | |
a0eb76e1 | 43 | (defgroup etags nil "Tags tables" |
99783bde RS |
44 | :group 'tools) |
45 | ||
ece6e35a GM |
46 | ;;;###autoload |
47 | (defcustom tags-case-fold-search 'default | |
48 | "*Whether tags operations should be case-sensitive. | |
49 | A value of t means case-insensitive, a value of nil means case-sensitive. | |
50 | Any other value means use the setting of `case-fold-search'." | |
51 | :group 'etags | |
52 | :type '(choice (const :tag "Case-sensitive" nil) | |
53 | (const :tag "Case-insensitive" t) | |
54 | (other :tag "Use default" default)) | |
55 | :version "21.1") | |
56 | ||
9708f7fc | 57 | ;;;###autoload |
b6176f64 | 58 | ;; Use `visit-tags-table-buffer' to cycle through tags tables in this list. |
99783bde | 59 | (defcustom tags-table-list nil |
b6176f64 RM |
60 | "*List of file names of tags tables to search. |
61 | An element that is a directory means the file \"TAGS\" in that directory. | |
62 | To switch to a new list of tags tables, setting this variable is sufficient. | |
63 | If you set this variable, do not also set `tags-file-name'. | |
99783bde RS |
64 | Use the `etags' program to make a tags table file." |
65 | :group 'etags | |
66 | :type '(repeat file)) | |
9708f7fc | 67 | |
ddc76b00 FP |
68 | ;;;###autoload |
69 | (defcustom tags-compression-info-list '("" ".Z" ".bz2" ".gz" ".tgz") | |
70 | "*List of extensions tried by etags when jka-compr is used. | |
71 | An empty string means search the non-compressed file. | |
72 | These extensions will be tried only if jka-compr was activated | |
1ea98518 SM |
73 | \(i.e. via customize of `auto-compression-mode' or by calling the function |
74 | `auto-compression-mode')." | |
75 | :type '(repeat string) | |
ddc76b00 FP |
76 | :group 'etags) |
77 | ||
1ea98518 SM |
78 | ;; !!! tags-compression-info-list should probably be replaced by access |
79 | ;; to directory list and matching jka-compr-compression-info-list. Currently, | |
80 | ;; this implementation forces each modification of | |
81 | ;; jka-compr-compression-info-list to be reflected in this var. | |
82 | ;; An alternative could be to say that introducing a special | |
83 | ;; element in this list (e.g. t) means : try at this point | |
84 | ;; using directory listing and regexp matching using | |
85 | ;; jka-compr-compression-info-list. | |
ddc76b00 FP |
86 | |
87 | ||
33633b28 | 88 | ;;;###autoload |
99783bde | 89 | (defcustom tags-add-tables 'ask-user |
0c37b824 RS |
90 | "*Control whether to add a new tags table to the current list. |
91 | t means do; nil means don't (always start a new list). | |
92 | Any other value means ask the user whether to add a new tags table | |
99783bde RS |
93 | to the current list (as opposed to starting a new list)." |
94 | :group 'etags | |
95 | :type '(choice (const :tag "Do" t) | |
96 | (const :tag "Don't" nil) | |
add3e8b3 | 97 | (other :tag "Ask" ask-user))) |
99783bde RS |
98 | |
99 | (defcustom tags-revert-without-query nil | |
100 | "*Non-nil means reread a TAGS table without querying, if it has changed." | |
101 | :group 'etags | |
102 | :type 'boolean) | |
5f8cdaf2 | 103 | |
a3d358c6 RM |
104 | (defvar tags-table-computed-list nil |
105 | "List of tags tables to search, computed from `tags-table-list'. | |
106 | This includes tables implicitly included by other tables. The list is not | |
107 | always complete: the included tables of a table are not known until that | |
6010664f | 108 | table is read into core. An element that is t is a placeholder |
a3d358c6 RM |
109 | indicating that the preceding element is a table that has not been read |
110 | into core and might contain included tables to search. | |
111 | See `tags-table-check-computed-list'.") | |
112 | ||
113 | (defvar tags-table-computed-list-for nil | |
114 | "Value of `tags-table-list' that `tags-table-computed-list' corresponds to. | |
115 | If `tags-table-list' changes, `tags-table-computed-list' is thrown away and | |
116 | recomputed; see `tags-table-check-computed-list'.") | |
117 | ||
9708f7fc | 118 | (defvar tags-table-list-pointer nil |
a3d358c6 | 119 | "Pointer into `tags-table-computed-list' for the current state of searching. |
47f3c459 RM |
120 | Use `visit-tags-table-buffer' to cycle through tags tables in this list.") |
121 | ||
122 | (defvar tags-table-list-started-at nil | |
a3d358c6 | 123 | "Pointer into `tags-table-computed-list', where the current search started.") |
9708f7fc RM |
124 | |
125 | (defvar tags-table-set-list nil | |
126 | "List of sets of tags table which have been used together in the past. | |
127 | Each element is a list of strings which are file names.") | |
128 | ||
129 | ;;;###autoload | |
99783bde | 130 | (defcustom find-tag-hook nil |
9708f7fc RM |
131 | "*Hook to be run by \\[find-tag] after finding a tag. See `run-hooks'. |
132 | The value in the buffer in which \\[find-tag] is done is used, | |
99783bde RS |
133 | not the value in the buffer \\[find-tag] goes to." |
134 | :group 'etags | |
135 | :type 'hook) | |
9708f7fc RM |
136 | |
137 | ;;;###autoload | |
99783bde | 138 | (defcustom find-tag-default-function nil |
47f3c459 RM |
139 | "*A function of no arguments used by \\[find-tag] to pick a default tag. |
140 | If nil, and the symbol that is the value of `major-mode' | |
9708f7fc | 141 | has a `find-tag-default-function' property (see `put'), that is used. |
99783bde RS |
142 | Otherwise, `find-tag-default' is used." |
143 | :group 'etags | |
d639db36 | 144 | :type '(choice (const nil) function)) |
9708f7fc | 145 | |
b533f3c5 RS |
146 | (defcustom find-tag-marker-ring-length 16 |
147 | "*Length of marker rings `find-tag-marker-ring' and `tags-location-ring'." | |
148 | :group 'etags | |
cd32a7ba DN |
149 | :type 'integer |
150 | :version "20.3") | |
b533f3c5 | 151 | |
7e7b42b2 GM |
152 | (defcustom tags-tag-face 'default |
153 | "*Face for tags in the output of `tags-apropos'." | |
154 | :group 'etags | |
155 | :type 'face | |
156 | :version "21.1") | |
157 | ||
158 | (defcustom tags-apropos-verbose nil | |
159 | "If non-nil, print the name of the tags file in the *Tags List* buffer." | |
160 | :group 'etags | |
161 | :type 'boolean | |
162 | :version "21.1") | |
163 | ||
164 | (defcustom tags-apropos-additional-actions nil | |
165 | "Specify additional actions for `tags-apropos'. | |
166 | ||
167 | If non-nil, value should be a list of triples (TITLE FUNCTION | |
168 | TO-SEARCH). For each triple, `tags-apropos' processes TO-SEARCH and | |
169 | lists tags from it. TO-SEARCH should be an alist, obarray, or symbol. | |
170 | If it is a symbol, the symbol's value is used. | |
6010664f | 171 | TITLE, a string, is a title used to label the additional list of tags. |
7e7b42b2 GM |
172 | FUNCTION is a function to call when a symbol is selected in the |
173 | *Tags List* buffer. It will be called with one argument SYMBOL which | |
174 | is the symbol being selected. | |
175 | ||
176 | Example value: | |
177 | ||
178 | '((\"Emacs Lisp\" Info-goto-emacs-command-node obarray) | |
179 | (\"Common Lisp\" common-lisp-hyperspec common-lisp-hyperspec-obarray) | |
180 | (\"SCWM\" scwm-documentation scwm-obarray))" | |
181 | :group 'etags | |
61520f26 DL |
182 | :type '(repeat (list (string :tag "Title") |
183 | function | |
184 | (sexp :tag "Tags to search"))) | |
7e7b42b2 GM |
185 | :version "21.1") |
186 | ||
b533f3c5 RS |
187 | (defvar find-tag-marker-ring (make-ring find-tag-marker-ring-length) |
188 | "Ring of markers which are locations from which \\[find-tag] was invoked.") | |
189 | ||
9708f7fc | 190 | (defvar default-tags-table-function nil |
5f8cdaf2 RS |
191 | "If non-nil, a function to choose a default tags file for a buffer. |
192 | This function receives no arguments and should return the default | |
193 | tags table file to use for the current buffer.") | |
d74e816f | 194 | |
b533f3c5 RS |
195 | (defvar tags-location-ring (make-ring find-tag-marker-ring-length) |
196 | "Ring of markers which are locations visited by \\[find-tag]. | |
d74e816f | 197 | Pop back to the last location with \\[negative-argument] \\[find-tag].") |
9708f7fc RM |
198 | \f |
199 | ;; Tags table state. | |
200 | ;; These variables are local in tags table buffers. | |
ff1f0fa6 | 201 | |
9708f7fc RM |
202 | (defvar tags-table-files nil |
203 | "List of file names covered by current tags table. | |
204 | nil means it has not yet been computed; use `tags-table-files' to do so.") | |
205 | ||
206 | (defvar tags-completion-table nil | |
7e7b42b2 | 207 | "Obarray of tag names defined in current tags table.") |
9708f7fc RM |
208 | |
209 | (defvar tags-included-tables nil | |
210 | "List of tags tables included by the current tags table.") | |
211 | ||
212 | (defvar next-file-list nil | |
213 | "List of files for \\[next-file] to process.") | |
214 | \f | |
215 | ;; Hooks for file formats. | |
216 | ||
d6b8c85b SM |
217 | (defvar tags-table-format-functions '(etags-recognize-tags-table |
218 | tags-recognize-empty-tags-table) | |
6010664f | 219 | "Hook to be called in a tags table buffer to identify the type of tags table. |
b533f3c5 | 220 | The functions are called in order, with no arguments, |
9708f7fc RM |
221 | until one returns non-nil. The function should make buffer-local bindings |
222 | of the format-parsing tags function variables if successful.") | |
223 | ||
224 | (defvar file-of-tag-function nil | |
79e01623 JB |
225 | "Function to do the work of `file-of-tag' (which see). |
226 | One optional argument, a boolean specifying to return complete path (nil) or | |
227 | relative path (non-nil).") | |
9708f7fc RM |
228 | (defvar tags-table-files-function nil |
229 | "Function to do the work of `tags-table-files' (which see).") | |
230 | (defvar tags-completion-table-function nil | |
6010664f | 231 | "Function to build the `tags-completion-table'.") |
9708f7fc | 232 | (defvar snarf-tag-function nil |
79e01623 JB |
233 | "Function to get info about a matched tag for `goto-tag-location-function'. |
234 | One optional argument, specifying to use explicit tag (non-nil) or not (nil). | |
235 | The default is nil.") | |
9708f7fc RM |
236 | (defvar goto-tag-location-function nil |
237 | "Function of to go to the location in the buffer specified by a tag. | |
238 | One argument, the tag info returned by `snarf-tag-function'.") | |
239 | (defvar find-tag-regexp-search-function nil | |
240 | "Search function passed to `find-tag-in-order' for finding a regexp tag.") | |
241 | (defvar find-tag-regexp-tag-order nil | |
242 | "Tag order passed to `find-tag-in-order' for finding a regexp tag.") | |
243 | (defvar find-tag-regexp-next-line-after-failure-p nil | |
244 | "Flag passed to `find-tag-in-order' for finding a regexp tag.") | |
245 | (defvar find-tag-search-function nil | |
246 | "Search function passed to `find-tag-in-order' for finding a tag.") | |
247 | (defvar find-tag-tag-order nil | |
248 | "Tag order passed to `find-tag-in-order' for finding a tag.") | |
249 | (defvar find-tag-next-line-after-failure-p nil | |
250 | "Flag passed to `find-tag-in-order' for finding a tag.") | |
251 | (defvar list-tags-function nil | |
252 | "Function to do the work of `list-tags' (which see).") | |
253 | (defvar tags-apropos-function nil | |
254 | "Function to do the work of `tags-apropos' (which see).") | |
255 | (defvar tags-included-tables-function nil | |
256 | "Function to do the work of `tags-included-tables' (which see).") | |
257 | (defvar verify-tags-table-function nil | |
350ce4cf | 258 | "Function to return t iff current buffer contains valid tags file.") |
9708f7fc | 259 | \f |
b6176f64 RM |
260 | ;; Initialize the tags table in the current buffer. |
261 | ;; Returns non-nil iff it is a valid tags table. On | |
262 | ;; non-nil return, the tags table state variable are | |
263 | ;; made buffer-local and initialized to nil. | |
9708f7fc | 264 | (defun initialize-new-tags-table () |
b6176f64 RM |
265 | (set (make-local-variable 'tags-table-files) nil) |
266 | (set (make-local-variable 'tags-completion-table) nil) | |
267 | (set (make-local-variable 'tags-included-tables) nil) | |
931f525c RS |
268 | ;; We used to initialize find-tag-marker-ring and tags-location-ring |
269 | ;; here, to new empty rings. But that is wrong, because those | |
270 | ;; are global. | |
271 | ||
9708f7fc | 272 | ;; Value is t if we have found a valid tags table buffer. |
d6b8c85b | 273 | (run-hook-with-args-until-success 'tags-table-format-functions)) |
ff1f0fa6 | 274 | |
c086701a | 275 | ;;;###autoload |
9708f7fc RM |
276 | (defun visit-tags-table (file &optional local) |
277 | "Tell tags commands to use tags table file FILE. | |
ff1f0fa6 | 278 | FILE should be the name of a file created with the `etags' program. |
9708f7fc RM |
279 | A directory name is ok too; it means file TAGS in that directory. |
280 | ||
281 | Normally \\[visit-tags-table] sets the global value of `tags-file-name'. | |
282 | With a prefix arg, set the buffer-local value instead. | |
283 | When you find a tag with \\[find-tag], the buffer it finds the tag | |
284 | in is given a local value of this variable which is the name of the tags | |
285 | file the tag was in." | |
ff1f0fa6 JB |
286 | (interactive (list (read-file-name "Visit tags table: (default TAGS) " |
287 | default-directory | |
9708f7fc RM |
288 | (expand-file-name "TAGS" |
289 | default-directory) | |
290 | t) | |
291 | current-prefix-arg)) | |
aab936ad RM |
292 | (or (stringp file) (signal 'wrong-type-argument (list 'stringp file))) |
293 | ;; Bind tags-file-name so we can control below whether the local or | |
294 | ;; global value gets set. Calling visit-tags-table-buffer will | |
295 | ;; initialize a buffer for the file and set tags-file-name to the | |
5e882a6a RS |
296 | ;; Calling visit-tags-table-buffer with tags-file-name set to FILE will |
297 | ;; initialize a buffer for FILE and set tags-file-name to the | |
b6176f64 | 298 | ;; fully-expanded name. |
9806213d RM |
299 | (let ((tags-file-name file)) |
300 | (save-excursion | |
aab936ad | 301 | (or (visit-tags-table-buffer file) |
9806213d RM |
302 | (signal 'file-error (list "Visiting tags table" |
303 | "file does not exist" | |
304 | file))) | |
b6176f64 | 305 | ;; Set FILE to the expanded name. |
9806213d | 306 | (setq file tags-file-name))) |
9708f7fc | 307 | (if local |
b6176f64 | 308 | ;; Set the local value of tags-file-name. |
47f3c459 | 309 | (set (make-local-variable 'tags-file-name) file) |
b6176f64 | 310 | ;; Set the global value of tags-file-name. |
9806213d RM |
311 | (setq-default tags-file-name file))) |
312 | ||
a3d358c6 RM |
313 | (defun tags-table-check-computed-list () |
314 | "Compute `tags-table-computed-list' from `tags-table-list' if necessary." | |
315 | (let ((expanded-list (mapcar 'tags-expand-table-name tags-table-list))) | |
316 | (or (equal tags-table-computed-list-for expanded-list) | |
317 | ;; The list (or default-directory) has changed since last computed. | |
318 | (let* ((compute-for (mapcar 'copy-sequence expanded-list)) | |
319 | (tables (copy-sequence compute-for)) ;Mutated in the loop. | |
320 | (computed nil) | |
321 | table-buffer) | |
322 | ||
323 | (while tables | |
324 | (setq computed (cons (car tables) computed) | |
325 | table-buffer (get-file-buffer (car tables))) | |
83287e5b | 326 | (if (and table-buffer |
c49a777a RM |
327 | ;; There is a buffer visiting the file. Now make sure |
328 | ;; it is initialized as a tag table buffer. | |
329 | (save-excursion | |
330 | (tags-verify-table (buffer-file-name table-buffer)))) | |
a3d358c6 RM |
331 | (save-excursion |
332 | (set-buffer table-buffer) | |
333 | (if (tags-included-tables) | |
334 | ;; Insert the included tables into the list we | |
335 | ;; are processing. | |
b1c7e434 RM |
336 | (setcdr tables (nconc (mapcar 'tags-expand-table-name |
337 | (tags-included-tables)) | |
338 | (cdr tables))))) | |
a3d358c6 RM |
339 | ;; This table is not in core yet. Insert a placeholder |
340 | ;; saying we must read it into core to check for included | |
341 | ;; tables before searching the next table in the list. | |
342 | (setq computed (cons t computed))) | |
343 | (setq tables (cdr tables))) | |
344 | ||
345 | ;; Record the tags-table-list value (and the context of the | |
346 | ;; current directory) we computed from. | |
347 | (setq tags-table-computed-list-for compute-for | |
348 | tags-table-computed-list (nreverse computed)))))) | |
349 | ||
350 | ;; Extend `tags-table-computed-list' to remove the first `t' placeholder. | |
351 | ;; An element of the list that is `t' is a placeholder indicating that the | |
352 | ;; preceding element is a table that has not been read into core and might | |
353 | ;; contain included tables to search. On return, the first placeholder | |
354 | ;; element will be gone and the element before it read into core and its | |
355 | ;; included tables inserted into the list. | |
356 | (defun tags-table-extend-computed-list () | |
357 | (let ((list tags-table-computed-list)) | |
358 | (while (not (eq (nth 1 list) t)) | |
359 | (setq list (cdr list))) | |
360 | (save-excursion | |
361 | (if (tags-verify-table (car list)) | |
362 | ;; We are now in the buffer visiting (car LIST). Extract its | |
363 | ;; list of included tables and insert it into the computed list. | |
364 | (let ((tables (tags-included-tables)) | |
365 | (computed nil) | |
366 | table-buffer) | |
367 | (while tables | |
368 | (setq computed (cons (car tables) computed) | |
369 | table-buffer (get-file-buffer (car tables))) | |
370 | (if table-buffer | |
371 | (save-excursion | |
372 | (set-buffer table-buffer) | |
373 | (if (tags-included-tables) | |
374 | ;; Insert the included tables into the list we | |
375 | ;; are processing. | |
376 | (setcdr tables (append (tags-included-tables) | |
377 | tables)))) | |
378 | ;; This table is not in core yet. Insert a placeholder | |
379 | ;; saying we must read it into core to check for included | |
380 | ;; tables before searching the next table in the list. | |
e99045bb RM |
381 | (setq computed (cons t computed))) |
382 | (setq tables (cdr tables))) | |
a3d358c6 RM |
383 | (setq computed (nreverse computed)) |
384 | ;; COMPUTED now contains the list of included tables (and | |
385 | ;; tables included by them, etc.). Now splice this into the | |
386 | ;; current list. | |
387 | (setcdr list (nconc computed (cdr (cdr list))))) | |
388 | ;; It was not a valid table, so just remove the following placeholder. | |
389 | (setcdr list (cdr (cdr list))))))) | |
b6176f64 RM |
390 | |
391 | ;; Expand tags table name FILE into a complete file name. | |
47f3c459 | 392 | (defun tags-expand-table-name (file) |
47f3c459 RM |
393 | (setq file (expand-file-name file)) |
394 | (if (file-directory-p file) | |
395 | (expand-file-name "TAGS" file) | |
396 | file)) | |
397 | ||
a3d358c6 RM |
398 | ;; Like member, but comparison is done after tags-expand-table-name on both |
399 | ;; sides and elements of LIST that are t are skipped. | |
400 | (defun tags-table-list-member (file list) | |
47f3c459 | 401 | (setq file (tags-expand-table-name file)) |
a3d358c6 RM |
402 | (while (and list |
403 | (or (eq (car list) t) | |
404 | (not (string= file (tags-expand-table-name (car list)))))) | |
405 | (setq list (cdr list))) | |
47f3c459 RM |
406 | list) |
407 | ||
a3d358c6 RM |
408 | (defun tags-verify-table (file) |
409 | "Read FILE into a buffer and verify that it is a valid tags table. | |
410 | Sets the current buffer to one visiting FILE (if it exists). | |
411 | Returns non-nil iff it is a valid table." | |
412 | (if (get-file-buffer file) | |
413 | ;; The file is already in a buffer. Check for the visited file | |
414 | ;; having changed since we last used it. | |
415 | (let (win) | |
416 | (set-buffer (get-file-buffer file)) | |
417 | (setq win (or verify-tags-table-function (initialize-new-tags-table))) | |
418 | (if (or (verify-visited-file-modtime (current-buffer)) | |
350ce4cf RS |
419 | ;; Decide whether to revert the file. |
420 | ;; revert-without-query can say to revert | |
421 | ;; or the user can say to revert. | |
422 | (not (or (let ((tail revert-without-query) | |
423 | (found nil)) | |
424 | (while tail | |
425 | (if (string-match (car tail) buffer-file-name) | |
426 | (setq found t)) | |
427 | (setq tail (cdr tail))) | |
428 | found) | |
99783bde | 429 | tags-revert-without-query |
350ce4cf RS |
430 | (yes-or-no-p |
431 | (format "Tags file %s has changed, read new contents? " | |
432 | file))))) | |
433 | (and verify-tags-table-function | |
434 | (funcall verify-tags-table-function)) | |
a3d358c6 RM |
435 | (revert-buffer t t) |
436 | (initialize-new-tags-table))) | |
437 | (and (file-exists-p file) | |
438 | (progn | |
439 | (set-buffer (find-file-noselect file)) | |
440 | (or (string= file buffer-file-name) | |
441 | ;; find-file-noselect has changed the file name. | |
442 | ;; Propagate the change to tags-file-name and tags-table-list. | |
443 | (let ((tail (member file tags-table-list))) | |
444 | (if tail | |
445 | (setcar tail buffer-file-name)) | |
446 | (if (eq file tags-file-name) | |
447 | (setq tags-file-name buffer-file-name)))) | |
448 | (initialize-new-tags-table))))) | |
449 | ||
450 | ;; Subroutine of visit-tags-table-buffer. Search the current tags tables | |
451 | ;; for one that has tags for THIS-FILE (or that includes a table that | |
c3dea9ba RM |
452 | ;; does). Return the name of the first table table listing THIS-FILE; if |
453 | ;; the table is one included by another table, it is the master table that | |
454 | ;; we return. If CORE-ONLY is non-nil, check only tags tables that are | |
455 | ;; already in buffers--don't visit any new files. | |
a3d358c6 | 456 | (defun tags-table-including (this-file core-only) |
a3d358c6 | 457 | (let ((tables tags-table-computed-list) |
f06df563 | 458 | (found nil)) |
a3d358c6 | 459 | ;; Loop over the list, looking for a table containing tags for THIS-FILE. |
47f3c459 RM |
460 | (while (and (not found) |
461 | tables) | |
9d591df8 RM |
462 | |
463 | (if core-only | |
464 | ;; Skip tables not in core. | |
465 | (while (eq (nth 1 tables) t) | |
466 | (setq tables (cdr (cdr tables)))) | |
467 | (if (eq (nth 1 tables) t) | |
468 | ;; This table has not been read into core yet. Read it in now. | |
469 | (tags-table-extend-computed-list))) | |
a3d358c6 | 470 | |
3cc3f703 RM |
471 | (if tables |
472 | ;; Select the tags table buffer and get the file list up to date. | |
473 | (let ((tags-file-name (car tables))) | |
474 | (visit-tags-table-buffer 'same) | |
83287e5b RM |
475 | (if (member this-file (mapcar 'expand-file-name |
476 | (tags-table-files))) | |
3cc3f703 RM |
477 | ;; Found it. |
478 | (setq found tables)))) | |
47f3c459 | 479 | (setq tables (cdr tables))) |
3cc3f703 RM |
480 | (if found |
481 | ;; Now determine if the table we found was one included by another | |
82f75cca RM |
482 | ;; table, not explicitly listed. We do this by checking each |
483 | ;; element of the computed list to see if it appears in the user's | |
484 | ;; explicit list; the last element we will check is FOUND itself. | |
485 | ;; Then we return the last one which did in fact appear in | |
486 | ;; tags-table-list. | |
3cc3f703 RM |
487 | (let ((could-be nil) |
488 | (elt tags-table-computed-list)) | |
489 | (while (not (eq elt (cdr found))) | |
490 | (if (tags-table-list-member (car elt) tags-table-list) | |
491 | ;; This table appears in the user's list, so it could be | |
492 | ;; the one which includes the table we found. | |
82f75cca RM |
493 | (setq could-be (car elt))) |
494 | (setq elt (cdr elt)) | |
495 | (if (eq t (car elt)) | |
496 | (setq elt (cdr elt)))) | |
ec623f1b RM |
497 | ;; The last element we found in the computed list before FOUND |
498 | ;; that appears in the user's list will be the table that | |
83287e5b | 499 | ;; included the one we found. |
82f75cca | 500 | could-be)))) |
9708f7fc | 501 | |
a3d358c6 RM |
502 | ;; Subroutine of visit-tags-table-buffer. Move tags-table-list-pointer |
503 | ;; along and set tags-file-name. Returns nil when out of tables. | |
504 | (defun tags-next-table () | |
505 | ;; If there is a placeholder element next, compute the list to replace it. | |
506 | (while (eq (nth 1 tags-table-list-pointer) t) | |
507 | (tags-table-extend-computed-list)) | |
508 | ||
509 | ;; Go to the next table in the list. | |
510 | (setq tags-table-list-pointer (cdr tags-table-list-pointer)) | |
511 | (or tags-table-list-pointer | |
512 | ;; Wrap around. | |
513 | (setq tags-table-list-pointer tags-table-computed-list)) | |
514 | ||
515 | (if (eq tags-table-list-pointer tags-table-list-started-at) | |
516 | ;; We have come full circle. No more tables. | |
517 | (setq tags-table-list-pointer nil) | |
518 | ;; Set tags-file-name to the name from the list. It is already expanded. | |
519 | (setq tags-file-name (car tags-table-list-pointer)))) | |
520 | ||
97534f32 | 521 | ;;;###autoload |
9708f7fc RM |
522 | (defun visit-tags-table-buffer (&optional cont) |
523 | "Select the buffer containing the current tags table. | |
aab936ad | 524 | If optional arg is a string, visit that file as a tags table. |
9708f7fc | 525 | If optional arg is t, visit the next table in `tags-table-list'. |
9708f7fc | 526 | If optional arg is the atom `same', don't look for a new table; |
b6176f64 | 527 | just select the buffer visiting `tags-file-name'. |
47f3c459 | 528 | If arg is nil or absent, choose a first buffer from information in |
b6176f64 | 529 | `tags-file-name', `tags-table-list', `tags-table-list-pointer'. |
9708f7fc | 530 | Returns t if it visits a tags table, or nil if there are no more in the list." |
b6176f64 RM |
531 | |
532 | ;; Set tags-file-name to the tags table file we want to visit. | |
a3d358c6 RM |
533 | (cond ((eq cont 'same) |
534 | ;; Use the ambient value of tags-file-name. | |
535 | (or tags-file-name | |
b0b3cce2 KH |
536 | (error "%s" |
537 | (substitute-command-keys | |
4fa15f59 RS |
538 | (concat "No tags table in use; " |
539 | "use \\[visit-tags-table] to select one"))))) | |
a3d358c6 RM |
540 | |
541 | ((eq t cont) | |
542 | ;; Find the next table. | |
543 | (if (tags-next-table) | |
544 | ;; Skip over nonexistent files. | |
545 | (while (and (not (or (get-file-buffer tags-file-name) | |
546 | (file-exists-p tags-file-name))) | |
547 | (tags-next-table))))) | |
548 | ||
549 | (t | |
550 | ;; Pick a table out of our hat. | |
551 | (tags-table-check-computed-list) ;Get it up to date, we might use it. | |
552 | (setq tags-file-name | |
553 | (or | |
554 | ;; If passed a string, use that. | |
555 | (if (stringp cont) | |
556 | (prog1 cont | |
557 | (setq cont nil))) | |
558 | ;; First, try a local variable. | |
559 | (cdr (assq 'tags-file-name (buffer-local-variables))) | |
560 | ;; Second, try a user-specified function to guess. | |
561 | (and default-tags-table-function | |
562 | (funcall default-tags-table-function)) | |
563 | ;; Third, look for a tags table that contains tags for the | |
564 | ;; current buffer's file. If one is found, the lists will | |
565 | ;; be frobnicated, and CONT will be set non-nil so we don't | |
566 | ;; do it below. | |
567 | (and buffer-file-name | |
83287e5b | 568 | (or |
c3dea9ba RM |
569 | ;; First check only tables already in buffers. |
570 | (tags-table-including buffer-file-name t) | |
571 | ;; Since that didn't find any, now do the | |
572 | ;; expensive version: reading new files. | |
573 | (tags-table-including buffer-file-name nil))) | |
a3d358c6 RM |
574 | ;; Fourth, use the user variable tags-file-name, if it is |
575 | ;; not already in the current list. | |
576 | (and tags-file-name | |
577 | (not (tags-table-list-member tags-file-name | |
578 | tags-table-computed-list)) | |
579 | tags-file-name) | |
580 | ;; Fifth, use the user variable giving the table list. | |
581 | ;; Find the first element of the list that actually exists. | |
582 | (let ((list tags-table-list) | |
583 | file) | |
584 | (while (and list | |
585 | (setq file (tags-expand-table-name (car list))) | |
586 | (not (get-file-buffer file)) | |
587 | (not (file-exists-p file))) | |
588 | (setq list (cdr list))) | |
589 | (car list)) | |
590 | ;; Finally, prompt the user for a file name. | |
591 | (expand-file-name | |
592 | (read-file-name "Visit tags table: (default TAGS) " | |
593 | default-directory | |
594 | "TAGS" | |
595 | t)))))) | |
596 | ||
597 | ;; Expand the table name into a full file name. | |
598 | (setq tags-file-name (tags-expand-table-name tags-file-name)) | |
599 | ||
7e7b42b2 | 600 | (unless (and (eq cont t) (null tags-table-list-pointer)) |
a3d358c6 | 601 | ;; Verify that tags-file-name names a valid tags table. |
229b7986 RM |
602 | ;; Bind another variable with the value of tags-file-name |
603 | ;; before we switch buffers, in case tags-file-name is buffer-local. | |
604 | (let ((curbuf (current-buffer)) | |
605 | (local-tags-file-name tags-file-name)) | |
606 | (if (tags-verify-table local-tags-file-name) | |
607 | ||
608 | ;; We have a valid tags table. | |
609 | (progn | |
610 | ;; Bury the tags table buffer so it | |
611 | ;; doesn't get in the user's way. | |
612 | (bury-buffer (current-buffer)) | |
613 | ||
614 | ;; If this was a new table selection (CONT is nil), make | |
615 | ;; sure tags-table-list includes the chosen table, and | |
616 | ;; update the list pointer variables. | |
617 | (or cont | |
618 | ;; Look in the list for the table we chose. | |
619 | (let ((found (tags-table-list-member | |
620 | local-tags-file-name | |
621 | tags-table-computed-list))) | |
622 | (if found | |
623 | ;; There it is. Just switch to it. | |
624 | (setq tags-table-list-pointer found | |
625 | tags-table-list-started-at found) | |
626 | ||
627 | ;; The table is not in the current set. | |
628 | ;; Try to find it in another previously used set. | |
629 | (let ((sets tags-table-set-list)) | |
630 | (while (and sets | |
631 | (not (tags-table-list-member | |
632 | local-tags-file-name | |
633 | (car sets)))) | |
634 | (setq sets (cdr sets))) | |
635 | (if sets | |
636 | ;; Found in some other set. Switch to that set. | |
637 | (progn | |
638 | (or (memq tags-table-list tags-table-set-list) | |
639 | ;; Save the current list. | |
640 | (setq tags-table-set-list | |
641 | (cons tags-table-list | |
642 | tags-table-set-list))) | |
643 | (setq tags-table-list (car sets))) | |
644 | ||
645 | ;; Not found in any existing set. | |
646 | (if (and tags-table-list | |
647 | (or (eq t tags-add-tables) | |
648 | (and tags-add-tables | |
649 | (y-or-n-p | |
650 | (concat "Keep current list of " | |
651 | "tags tables also? "))))) | |
652 | ;; Add it to the current list. | |
653 | (setq tags-table-list (cons local-tags-file-name | |
654 | tags-table-list)) | |
655 | ||
656 | ;; Make a fresh list, and store the old one. | |
657 | (message "Starting a new list of tags tables") | |
658 | (or (null tags-table-list) | |
659 | (memq tags-table-list tags-table-set-list) | |
f06df563 RM |
660 | (setq tags-table-set-list |
661 | (cons tags-table-list | |
662 | tags-table-set-list))) | |
dd2cedb9 DL |
663 | ;; Clear out buffers holding old tables. |
664 | (dolist (table tags-table-list) | |
84d51f9b DL |
665 | ;; The list can contain items `t'. |
666 | (if (stringp table) | |
667 | (let ((buffer (find-buffer-visiting table))) | |
dd2cedb9 | 668 | (if buffer |
84d51f9b | 669 | (kill-buffer buffer))))) |
229b7986 RM |
670 | (setq tags-table-list (list local-tags-file-name)))) |
671 | ||
672 | ;; Recompute tags-table-computed-list. | |
673 | (tags-table-check-computed-list) | |
674 | ;; Set the tags table list state variables to start | |
675 | ;; over from tags-table-computed-list. | |
676 | (setq tags-table-list-started-at tags-table-computed-list | |
677 | tags-table-list-pointer | |
678 | tags-table-computed-list))))) | |
679 | ||
680 | ;; Return of t says the tags table is valid. | |
681 | t) | |
682 | ||
683 | ;; The buffer was not valid. Don't use it again. | |
684 | (set-buffer curbuf) | |
a3d358c6 | 685 | (kill-local-variable 'tags-file-name) |
229b7986 | 686 | (if (eq local-tags-file-name tags-file-name) |
e98cc0af | 687 | (setq tags-file-name nil)) |
229b7986 | 688 | (error "File %s is not a valid tags table" local-tags-file-name))))) |
c6987f0b RM |
689 | |
690 | (defun tags-reset-tags-tables () | |
b533f3c5 | 691 | "Reset tags state to cancel effect of any previous \\[visit-tags-table] or \\[find-tag]." |
c6987f0b | 692 | (interactive) |
466886a2 KH |
693 | ;; Clear out the markers we are throwing away. |
694 | (let ((i 0)) | |
695 | (while (< i find-tag-marker-ring-length) | |
696 | (if (aref (cddr tags-location-ring) i) | |
697 | (set-marker (aref (cddr tags-location-ring) i) nil)) | |
698 | (if (aref (cddr find-tag-marker-ring) i) | |
699 | (set-marker (aref (cddr find-tag-marker-ring) i) nil)) | |
700 | (setq i (1+ i)))) | |
c6987f0b | 701 | (setq tags-file-name nil |
466886a2 KH |
702 | tags-location-ring (make-ring find-tag-marker-ring-length) |
703 | find-tag-marker-ring (make-ring find-tag-marker-ring-length) | |
c6987f0b RM |
704 | tags-table-list nil |
705 | tags-table-computed-list nil | |
706 | tags-table-computed-list-for nil | |
707 | tags-table-list-pointer nil | |
708 | tags-table-list-started-at nil | |
709 | tags-table-set-list nil)) | |
a128c7a0 | 710 | \f |
79e01623 | 711 | (defun file-of-tag (&optional relative) |
ff1f0fa6 | 712 | "Return the file name of the file whose tags point is within. |
9708f7fc | 713 | Assumes the tags table is the current buffer. |
79e01623 JB |
714 | If RELATIVE is non-nil, file name returned is relative to tags |
715 | table file's directory. If RELATIVE is nil, file name returned | |
716 | is complete." | |
717 | (funcall file-of-tag-function relative)) | |
ff1f0fa6 | 718 | |
c086701a | 719 | ;;;###autoload |
9708f7fc RM |
720 | (defun tags-table-files () |
721 | "Return a list of files in the current tags table. | |
83287e5b RM |
722 | Assumes the tags table is the current buffer. The file names are returned |
723 | as they appeared in the `etags' command that created the table, usually | |
724 | without directory names." | |
a128c7a0 RM |
725 | (or tags-table-files |
726 | (setq tags-table-files | |
727 | (funcall tags-table-files-function)))) | |
9708f7fc RM |
728 | |
729 | (defun tags-included-tables () | |
b6176f64 RM |
730 | "Return a list of tags tables included by the current table. |
731 | Assumes the tags table is the current buffer." | |
9708f7fc RM |
732 | (or tags-included-tables |
733 | (setq tags-included-tables (funcall tags-included-tables-function)))) | |
734 | \f | |
735 | ;; Build tags-completion-table on demand. The single current tags table | |
736 | ;; and its included tags tables (and their included tables, etc.) have | |
737 | ;; their tags included in the completion table. | |
738 | (defun tags-completion-table () | |
739 | (or tags-completion-table | |
740 | (condition-case () | |
741 | (prog2 | |
742 | (message "Making tags completion table for %s..." buffer-file-name) | |
743 | (let ((included (tags-included-tables)) | |
744 | (table (funcall tags-completion-table-function))) | |
745 | (save-excursion | |
b6176f64 RM |
746 | ;; Iterate over the list of included tables, and combine each |
747 | ;; included table's completion obarray to the parent obarray. | |
9708f7fc | 748 | (while included |
b6176f64 | 749 | ;; Visit the buffer. |
9708f7fc | 750 | (let ((tags-file-name (car included))) |
47f3c459 | 751 | (visit-tags-table-buffer 'same)) |
b6176f64 | 752 | ;; Recurse in that buffer to compute its completion table. |
9708f7fc | 753 | (if (tags-completion-table) |
b6176f64 | 754 | ;; Combine the tables. |
7e7b42b2 | 755 | (mapatoms (lambda (sym) (intern (symbol-name sym) table)) |
9708f7fc RM |
756 | tags-completion-table)) |
757 | (setq included (cdr included)))) | |
758 | (setq tags-completion-table table)) | |
759 | (message "Making tags completion table for %s...done" | |
760 | buffer-file-name)) | |
761 | (quit (message "Tags completion table construction aborted.") | |
762 | (setq tags-completion-table nil))))) | |
763 | ||
764 | ;; Completion function for tags. Does normal try-completion, | |
765 | ;; but builds tags-completion-table on demand. | |
766 | (defun tags-complete-tag (string predicate what) | |
767 | (save-excursion | |
34d51d08 RS |
768 | ;; If we need to ask for the tag table, allow that. |
769 | (let ((enable-recursive-minibuffers t)) | |
770 | (visit-tags-table-buffer)) | |
9708f7fc RM |
771 | (if (eq what t) |
772 | (all-completions string (tags-completion-table) predicate) | |
773 | (try-completion string (tags-completion-table) predicate)))) | |
a128c7a0 | 774 | \f |
ff1f0fa6 JB |
775 | ;; Return a default tag to search for, based on the text at point. |
776 | (defun find-tag-default () | |
777 | (save-excursion | |
778 | (while (looking-at "\\sw\\|\\s_") | |
779 | (forward-char 1)) | |
9708f7fc RM |
780 | (if (or (re-search-backward "\\sw\\|\\s_" |
781 | (save-excursion (beginning-of-line) (point)) | |
782 | t) | |
783 | (re-search-forward "\\(\\sw\\|\\s_\\)+" | |
784 | (save-excursion (end-of-line) (point)) | |
785 | t)) | |
786 | (progn (goto-char (match-end 0)) | |
841e0fe4 JB |
787 | (buffer-substring-no-properties |
788 | (point) | |
789 | (progn (forward-sexp -1) | |
790 | (while (looking-at "\\s'") | |
791 | (forward-char 1)) | |
792 | (point)))) | |
ff1f0fa6 JB |
793 | nil))) |
794 | ||
9708f7fc | 795 | ;; Read a tag name from the minibuffer with defaulting and completion. |
ff1f0fa6 | 796 | (defun find-tag-tag (string) |
8a294d90 FP |
797 | (let* ((completion-ignore-case (if (memq tags-case-fold-search '(t nil)) |
798 | tags-case-fold-search | |
799 | case-fold-search)) | |
800 | (default (funcall (or find-tag-default-function | |
9708f7fc RM |
801 | (get major-mode 'find-tag-default-function) |
802 | 'find-tag-default))) | |
803 | (spec (completing-read (if default | |
ebc6b37c SM |
804 | (format "%s (default %s): " |
805 | (substring string 0 (string-match "[ :]+\\'" string)) | |
806 | default) | |
9708f7fc | 807 | string) |
ab685b6b RS |
808 | 'tags-complete-tag |
809 | nil nil nil nil default))) | |
b6176f64 RM |
810 | (if (equal spec "") |
811 | (or default (error "There is no default tag")) | |
812 | spec))) | |
ff1f0fa6 | 813 | |
21800cb8 RM |
814 | (defvar last-tag nil |
815 | "Last tag found by \\[find-tag].") | |
816 | ||
d74e816f RM |
817 | ;; Get interactive args for find-tag{-noselect,-other-window,-regexp}. |
818 | (defun find-tag-interactive (prompt &optional no-default) | |
926861fb | 819 | (if (and current-prefix-arg last-tag) |
d74e816f RM |
820 | (list nil (if (< (prefix-numeric-value current-prefix-arg) 0) |
821 | '- | |
822 | t)) | |
823 | (list (if no-default | |
824 | (read-string prompt) | |
825 | (find-tag-tag prompt))))) | |
826 | ||
c5507689 RS |
827 | (defvar find-tag-history nil) |
828 | ||
dd2cedb9 DL |
829 | ;; Dynamic bondage: |
830 | (eval-when-compile | |
831 | (defvar etags-case-fold-search) | |
832 | (defvar etags-syntax-table)) | |
833 | ||
c086701a | 834 | ;;;###autoload |
9708f7fc RM |
835 | (defun find-tag-noselect (tagname &optional next-p regexp-p) |
836 | "Find tag (in current tags table) whose name contains TAGNAME. | |
f90a6155 | 837 | Returns the buffer containing the tag's definition and moves its point there, |
9708f7fc RM |
838 | but does not select the buffer. |
839 | The default for TAGNAME is the expression in the buffer near point. | |
840 | ||
d74e816f RM |
841 | If second arg NEXT-P is t (interactively, with prefix arg), search for |
842 | another tag that matches the last tagname or regexp used. When there are | |
843 | multiple matches for a tag, more exact matches are found first. If NEXT-P | |
844 | is the atom `-' (interactively, with prefix arg that is a negative number | |
845 | or just \\[negative-argument]), pop back to the previous tag gone to. | |
ff1f0fa6 | 846 | |
9708f7fc RM |
847 | If third arg REGEXP-P is non-nil, treat TAGNAME as a regexp. |
848 | ||
a70ea557 | 849 | A marker representing the point when this command is invoked is pushed |
b533f3c5 RS |
850 | onto a ring and may be popped back to with \\[pop-tag-mark]. |
851 | Contrast this with the ring of marks gone to by the command. | |
852 | ||
9708f7fc | 853 | See documentation of variable `tags-file-name'." |
d74e816f RM |
854 | (interactive (find-tag-interactive "Find tag: ")) |
855 | ||
c5507689 | 856 | (setq find-tag-history (cons tagname find-tag-history)) |
e1cf67b6 GM |
857 | ;; Save the current buffer's value of `find-tag-hook' before |
858 | ;; selecting the tags table buffer. For the same reason, save value | |
859 | ;; of `tags-file-name' in case it has a buffer-local value. | |
dc0274bd | 860 | (let ((local-find-tag-hook find-tag-hook)) |
d74e816f RM |
861 | (if (eq '- next-p) |
862 | ;; Pop back to a previous location. | |
b533f3c5 | 863 | (if (ring-empty-p tags-location-ring) |
d74e816f | 864 | (error "No previous tag locations") |
b533f3c5 | 865 | (let ((marker (ring-remove tags-location-ring 0))) |
d74e816f RM |
866 | (prog1 |
867 | ;; Move to the saved location. | |
b533f3c5 RS |
868 | (set-buffer (or (marker-buffer marker) |
869 | (error "The marked buffer has been deleted"))) | |
d74e816f | 870 | (goto-char (marker-position marker)) |
eb8c3be9 | 871 | ;; Kill that marker so it doesn't slow down editing. |
d74e816f RM |
872 | (set-marker marker nil nil) |
873 | ;; Run the user's hook. Do we really want to do this for pop? | |
874 | (run-hooks 'local-find-tag-hook)))) | |
b533f3c5 RS |
875 | ;; Record whence we came. |
876 | (ring-insert find-tag-marker-ring (point-marker)) | |
926861fb | 877 | (if (and next-p last-tag) |
d74e816f RM |
878 | ;; Find the same table we last used. |
879 | (visit-tags-table-buffer 'same) | |
880 | ;; Pick a table to use. | |
881 | (visit-tags-table-buffer) | |
882 | ;; Record TAGNAME for a future call with NEXT-P non-nil. | |
883 | (setq last-tag tagname)) | |
4cc32db6 RS |
884 | ;; Record the location so we can pop back to it later. |
885 | (let ((marker (make-marker))) | |
886 | (save-excursion | |
887 | (set-buffer | |
888 | ;; find-tag-in-order does the real work. | |
889 | (find-tag-in-order | |
926861fb | 890 | (if (and next-p last-tag) last-tag tagname) |
4cc32db6 RS |
891 | (if regexp-p |
892 | find-tag-regexp-search-function | |
893 | find-tag-search-function) | |
894 | (if regexp-p | |
895 | find-tag-regexp-tag-order | |
83287e5b | 896 | find-tag-tag-order) |
4cc32db6 RS |
897 | (if regexp-p |
898 | find-tag-regexp-next-line-after-failure-p | |
899 | find-tag-next-line-after-failure-p) | |
900 | (if regexp-p "matching" "containing") | |
926861fb | 901 | (or (not next-p) (not last-tag)))) |
4cc32db6 RS |
902 | (set-marker marker (point)) |
903 | (run-hooks 'local-find-tag-hook) | |
b533f3c5 | 904 | (ring-insert tags-location-ring marker) |
4cc32db6 | 905 | (current-buffer)))))) |
ff1f0fa6 | 906 | |
c086701a | 907 | ;;;###autoload |
d74e816f | 908 | (defun find-tag (tagname &optional next-p regexp-p) |
9708f7fc RM |
909 | "Find tag (in current tags table) whose name contains TAGNAME. |
910 | Select the buffer containing the tag's definition, and move point there. | |
911 | The default for TAGNAME is the expression in the buffer around or before point. | |
c086701a | 912 | |
d74e816f RM |
913 | If second arg NEXT-P is t (interactively, with prefix arg), search for |
914 | another tag that matches the last tagname or regexp used. When there are | |
915 | multiple matches for a tag, more exact matches are found first. If NEXT-P | |
916 | is the atom `-' (interactively, with prefix arg that is a negative number | |
917 | or just \\[negative-argument]), pop back to the previous tag gone to. | |
ff1f0fa6 | 918 | |
b533f3c5 RS |
919 | If third arg REGEXP-P is non-nil, treat TAGNAME as a regexp. |
920 | ||
a70ea557 | 921 | A marker representing the point when this command is invoked is pushed |
b533f3c5 RS |
922 | onto a ring and may be popped back to with \\[pop-tag-mark]. |
923 | Contrast this with the ring of marks gone to by the command. | |
924 | ||
9708f7fc | 925 | See documentation of variable `tags-file-name'." |
d74e816f | 926 | (interactive (find-tag-interactive "Find tag: ")) |
ebc6b37c SM |
927 | (let* ((buf (find-tag-noselect tagname next-p regexp-p)) |
928 | (pos (with-current-buffer buf (point)))) | |
6010664f SM |
929 | (condition-case nil |
930 | (switch-to-buffer buf) | |
ebc6b37c SM |
931 | (error (pop-to-buffer buf))) |
932 | (goto-char pos))) | |
9708f7fc | 933 | ;;;###autoload (define-key esc-map "." 'find-tag) |
ff1f0fa6 | 934 | |
daa37602 | 935 | ;;;###autoload |
d74e816f | 936 | (defun find-tag-other-window (tagname &optional next-p regexp-p) |
9708f7fc | 937 | "Find tag (in current tags table) whose name contains TAGNAME. |
d74e816f RM |
938 | Select the buffer containing the tag's definition in another window, and |
939 | move point there. The default for TAGNAME is the expression in the buffer | |
940 | around or before point. | |
9708f7fc | 941 | |
d74e816f RM |
942 | If second arg NEXT-P is t (interactively, with prefix arg), search for |
943 | another tag that matches the last tagname or regexp used. When there are | |
944 | multiple matches for a tag, more exact matches are found first. If NEXT-P | |
945 | is negative (interactively, with prefix arg that is a negative number or | |
946 | just \\[negative-argument]), pop back to the previous tag gone to. | |
9708f7fc | 947 | |
b533f3c5 RS |
948 | If third arg REGEXP-P is non-nil, treat TAGNAME as a regexp. |
949 | ||
a70ea557 | 950 | A marker representing the point when this command is invoked is pushed |
b533f3c5 RS |
951 | onto a ring and may be popped back to with \\[pop-tag-mark]. |
952 | Contrast this with the ring of marks gone to by the command. | |
953 | ||
9708f7fc | 954 | See documentation of variable `tags-file-name'." |
d74e816f RM |
955 | (interactive (find-tag-interactive "Find tag other window: ")) |
956 | ||
b6176f64 RM |
957 | ;; This hair is to deal with the case where the tag is found in the |
958 | ;; selected window's buffer; without the hair, point is moved in both | |
959 | ;; windows. To prevent this, we save the selected window's point before | |
960 | ;; doing find-tag-noselect, and restore it after. | |
961 | (let* ((window-point (window-point (selected-window))) | |
d74e816f | 962 | (tagbuf (find-tag-noselect tagname next-p regexp-p)) |
49693298 | 963 | (tagpoint (progn (set-buffer tagbuf) (point)))) |
b6176f64 RM |
964 | (set-window-point (prog1 |
965 | (selected-window) | |
49693298 JB |
966 | (switch-to-buffer-other-window tagbuf) |
967 | ;; We have to set this new window's point; it | |
968 | ;; might already have been displaying a | |
969 | ;; different portion of tagbuf, in which case | |
970 | ;; switch-to-buffer-other-window doesn't set | |
971 | ;; the window's point from the buffer. | |
972 | (set-window-point (selected-window) tagpoint)) | |
b6176f64 | 973 | window-point))) |
9708f7fc RM |
974 | ;;;###autoload (define-key ctl-x-4-map "." 'find-tag-other-window) |
975 | ||
29add8b9 | 976 | ;;;###autoload |
9708f7fc | 977 | (defun find-tag-other-frame (tagname &optional next-p) |
d74e816f RM |
978 | "Find tag (in current tags table) whose name contains TAGNAME. |
979 | Select the buffer containing the tag's definition in another frame, and | |
980 | move point there. The default for TAGNAME is the expression in the buffer | |
981 | around or before point. | |
982 | ||
983 | If second arg NEXT-P is t (interactively, with prefix arg), search for | |
984 | another tag that matches the last tagname or regexp used. When there are | |
985 | multiple matches for a tag, more exact matches are found first. If NEXT-P | |
986 | is negative (interactively, with prefix arg that is a negative number or | |
987 | just \\[negative-argument]), pop back to the previous tag gone to. | |
daa37602 | 988 | |
b533f3c5 RS |
989 | If third arg REGEXP-P is non-nil, treat TAGNAME as a regexp. |
990 | ||
a70ea557 | 991 | A marker representing the point when this command is invoked is pushed |
b533f3c5 RS |
992 | onto a ring and may be popped back to with \\[pop-tag-mark]. |
993 | Contrast this with the ring of marks gone to by the command. | |
994 | ||
9708f7fc | 995 | See documentation of variable `tags-file-name'." |
d74e816f | 996 | (interactive (find-tag-interactive "Find tag other frame: ")) |
9708f7fc RM |
997 | (let ((pop-up-frames t)) |
998 | (find-tag-other-window tagname next-p))) | |
999 | ;;;###autoload (define-key ctl-x-5-map "." 'find-tag-other-frame) | |
1000 | ||
daa37602 | 1001 | ;;;###autoload |
9708f7fc RM |
1002 | (defun find-tag-regexp (regexp &optional next-p other-window) |
1003 | "Find tag (in current tags table) whose name matches REGEXP. | |
1004 | Select the buffer containing the tag's definition and move point there. | |
daa37602 | 1005 | |
d74e816f RM |
1006 | If second arg NEXT-P is t (interactively, with prefix arg), search for |
1007 | another tag that matches the last tagname or regexp used. When there are | |
1008 | multiple matches for a tag, more exact matches are found first. If NEXT-P | |
1009 | is negative (interactively, with prefix arg that is a negative number or | |
1010 | just \\[negative-argument]), pop back to the previous tag gone to. | |
9708f7fc RM |
1011 | |
1012 | If third arg OTHER-WINDOW is non-nil, select the buffer in another window. | |
1013 | ||
a70ea557 | 1014 | A marker representing the point when this command is invoked is pushed |
b533f3c5 RS |
1015 | onto a ring and may be popped back to with \\[pop-tag-mark]. |
1016 | Contrast this with the ring of marks gone to by the command. | |
1017 | ||
9708f7fc | 1018 | See documentation of variable `tags-file-name'." |
d74e816f RM |
1019 | (interactive (find-tag-interactive "Find tag regexp: " t)) |
1020 | ;; We go through find-tag-other-window to do all the display hair there. | |
1021 | (funcall (if other-window 'find-tag-other-window 'find-tag) | |
1022 | regexp next-p t)) | |
a6125773 | 1023 | ;;;###autoload (define-key esc-map [?\C-.] 'find-tag-regexp) |
b533f3c5 RS |
1024 | |
1025 | ;;;###autoload (define-key esc-map "*" 'pop-tag-mark) | |
1026 | ||
1027 | ;;;###autoload | |
1028 | (defun pop-tag-mark () | |
1029 | "Pop back to where \\[find-tag] was last invoked. | |
1030 | ||
1031 | This is distinct from invoking \\[find-tag] with a negative argument | |
1032 | since that pops a stack of markers at which tags were found, not from | |
1033 | where they were found." | |
1034 | (interactive) | |
1035 | (if (ring-empty-p find-tag-marker-ring) | |
1036 | (error "No previous locations for find-tag invocation")) | |
1037 | (let ((marker (ring-remove find-tag-marker-ring 0))) | |
1038 | (switch-to-buffer (or (marker-buffer marker) | |
1039 | (error "The marked buffer has been deleted"))) | |
1040 | (goto-char (marker-position marker)) | |
1041 | (set-marker marker nil nil))) | |
9708f7fc RM |
1042 | \f |
1043 | ;; Internal tag finding function. | |
1044 | ||
1045 | ;; PATTERN is a string to pass to second arg SEARCH-FORWARD-FUNC, and to | |
1046 | ;; any member of the function list ORDER (third arg). If ORDER is nil, | |
1047 | ;; use saved state to continue a previous search. | |
1048 | ||
b7b893bd | 1049 | ;; Fourth arg NEXT-LINE-AFTER-FAILURE-P is non-nil if after a failed match, |
9708f7fc RM |
1050 | ;; point should be moved to the next line. |
1051 | ||
b7b893bd FP |
1052 | ;; Fifth arg MATCHING is a string, an English '-ing' word, to be used in |
1053 | ;; an error message. | |
1054 | ||
9708f7fc RM |
1055 | ;; Algorithm is as follows. For each qualifier-func in ORDER, go to |
1056 | ;; beginning of tags file, and perform inner loop: for each naive match for | |
1057 | ;; PATTERN found using SEARCH-FORWARD-FUNC, qualify the naive match using | |
1058 | ;; qualifier-func. If it qualifies, go to the specified line in the | |
1059 | ;; specified source file and return. Qualified matches are remembered to | |
1060 | ;; avoid repetition. State is saved so that the loop can be continued. | |
1061 | ||
b7089f3c RM |
1062 | (defvar tag-lines-already-matched nil) ;matches remembered here between calls |
1063 | ||
f90a6155 JB |
1064 | (defun find-tag-in-order (pattern |
1065 | search-forward-func | |
1066 | order | |
1067 | next-line-after-failure-p | |
1068 | matching | |
1069 | first-search) | |
9708f7fc RM |
1070 | (let (file ;name of file containing tag |
1071 | tag-info ;where to find the tag in FILE | |
9708f7fc RM |
1072 | (first-table t) |
1073 | (tag-order order) | |
b7089f3c | 1074 | (match-marker (make-marker)) |
9708f7fc | 1075 | goto-func |
ece6e35a GM |
1076 | (case-fold-search (if (memq tags-case-fold-search '(nil t)) |
1077 | tags-case-fold-search | |
1078 | case-fold-search)) | |
9708f7fc RM |
1079 | ) |
1080 | (save-excursion | |
b7089f3c RM |
1081 | |
1082 | (if first-search | |
1083 | ;; This is the start of a search for a fresh tag. | |
1084 | ;; Clear the list of tags matched by the previous search. | |
1085 | ;; find-tag-noselect has already put us in the first tags table | |
1086 | ;; buffer before we got called. | |
1087 | (setq tag-lines-already-matched nil) | |
1088 | ;; Continuing to search for the tag specified last time. | |
1089 | ;; tag-lines-already-matched lists locations matched in previous | |
1090 | ;; calls so we don't visit the same tag twice if it matches twice | |
1091 | ;; during two passes with different qualification predicates. | |
1092 | ;; Switch to the current tags table buffer. | |
1093 | (visit-tags-table-buffer 'same)) | |
47f3c459 | 1094 | |
9708f7fc | 1095 | ;; Get a qualified match. |
83287e5b | 1096 | (catch 'qualified-match-found |
47f3c459 | 1097 | |
b6176f64 | 1098 | ;; Iterate over the list of tags tables. |
9708f7fc RM |
1099 | (while (or first-table |
1100 | (visit-tags-table-buffer t)) | |
1101 | ||
6218e8c6 RM |
1102 | (and first-search first-table |
1103 | ;; Start at beginning of tags file. | |
1104 | (goto-char (point-min))) | |
5e882a6a | 1105 | |
6218e8c6 | 1106 | (setq first-table nil) |
9708f7fc | 1107 | |
b6176f64 | 1108 | ;; Iterate over the list of ordering predicates. |
9708f7fc RM |
1109 | (while order |
1110 | (while (funcall search-forward-func pattern nil t) | |
1111 | ;; Naive match found. Qualify the match. | |
1112 | (and (funcall (car order) pattern) | |
1113 | ;; Make sure it is not a previous qualified match. | |
b7089f3c RM |
1114 | (not (member (set-marker match-marker (save-excursion |
1115 | (beginning-of-line) | |
1116 | (point))) | |
1117 | tag-lines-already-matched)) | |
9708f7fc RM |
1118 | (throw 'qualified-match-found nil)) |
1119 | (if next-line-after-failure-p | |
1120 | (forward-line 1))) | |
1121 | ;; Try the next flavor of match. | |
1122 | (setq order (cdr order)) | |
1123 | (goto-char (point-min))) | |
1124 | (setq order tag-order)) | |
1125 | ;; We throw out on match, so only get here if there were no matches. | |
b7089f3c RM |
1126 | ;; Clear out the markers we use to avoid duplicate matches so they |
1127 | ;; don't slow down editting and are immediately available for GC. | |
1128 | (while tag-lines-already-matched | |
1129 | (set-marker (car tag-lines-already-matched) nil nil) | |
1130 | (setq tag-lines-already-matched (cdr tag-lines-already-matched))) | |
1131 | (set-marker match-marker nil nil) | |
9708f7fc | 1132 | (error "No %stags %s %s" (if first-search "" "more ") |
83287e5b RM |
1133 | matching pattern)) |
1134 | ||
9708f7fc RM |
1135 | ;; Found a tag; extract location info. |
1136 | (beginning-of-line) | |
b7089f3c | 1137 | (setq tag-lines-already-matched (cons match-marker |
9708f7fc RM |
1138 | tag-lines-already-matched)) |
1139 | ;; Expand the filename, using the tags table buffer's default-directory. | |
fb7775eb | 1140 | ;; We should be able to search for file-name backwards in file-of-tag: |
ddc76b00 | 1141 | ;; the beginning-of-line is ok except when positioned on a "file-name" tag. |
fb7775eb | 1142 | (setq file (expand-file-name |
ddc76b00 FP |
1143 | (if (memq (car order) '(tag-exact-file-name-match-p |
1144 | tag-file-name-match-p | |
1145 | tag-partial-file-name-match-p)) | |
fb7775eb GM |
1146 | (save-excursion (next-line 1) |
1147 | (file-of-tag)) | |
1148 | (file-of-tag))) | |
9708f7fc RM |
1149 | tag-info (funcall snarf-tag-function)) |
1150 | ||
b6176f64 | 1151 | ;; Get the local value in the tags table buffer before switching buffers. |
9708f7fc | 1152 | (setq goto-func goto-tag-location-function) |
84406262 | 1153 | (tag-find-file-of-tag-noselect file) |
9708f7fc RM |
1154 | (widen) |
1155 | (push-mark) | |
83287e5b RM |
1156 | (funcall goto-func tag-info) |
1157 | ||
9708f7fc RM |
1158 | ;; Return the buffer where the tag was found. |
1159 | (current-buffer)))) | |
79e01623 | 1160 | |
84406262 | 1161 | (defun tag-find-file-of-tag-noselect (file) |
79e01623 JB |
1162 | ;; Find the right line in the specified file. |
1163 | ;; If we are interested in compressed-files, | |
1164 | ;; we search files with extensions. | |
1165 | ;; otherwise only the real file. | |
1166 | (let* ((buffer-search-extensions (if (featurep 'jka-compr) | |
1167 | tags-compression-info-list | |
1168 | '(""))) | |
1169 | the-buffer | |
1170 | (file-search-extensions buffer-search-extensions)) | |
1171 | ;; search a buffer visiting the file with each possible extension | |
1172 | ;; Note: there is a small inefficiency in find-buffer-visiting : | |
1173 | ;; truename is computed even if not needed. Not too sure about this | |
1174 | ;; but I suspect truename computation accesses the disk. | |
1175 | ;; It is maybe a good idea to optimise this find-buffer-visiting. | |
1176 | ;; An alternative would be to use only get-file-buffer | |
1177 | ;; but this looks less "sure" to find the buffer for the file. | |
1178 | (while (and (not the-buffer) buffer-search-extensions) | |
1179 | (setq the-buffer (find-buffer-visiting (concat file (car buffer-search-extensions)))) | |
1180 | (setq buffer-search-extensions (cdr buffer-search-extensions))) | |
1181 | ;; if found a buffer but file modified, ensure we re-read ! | |
1182 | (if (and the-buffer (not (verify-visited-file-modtime the-buffer))) | |
1183 | (find-file-noselect (buffer-file-name the-buffer))) | |
1184 | ;; if no buffer found, search for files with possible extensions on disk | |
1185 | (while (and (not the-buffer) file-search-extensions) | |
1186 | (if (not (file-exists-p (concat file (car file-search-extensions)))) | |
1187 | (setq file-search-extensions (cdr file-search-extensions)) | |
1188 | (setq the-buffer (find-file-noselect (concat file (car file-search-extensions)))))) | |
1189 | (if (not the-buffer) | |
1190 | (if (featurep 'jka-compr) | |
1191 | (error "File %s (with or without extensions %s) not found" file tags-compression-info-list) | |
1192 | (error "File %s not found" file)) | |
1193 | (set-buffer the-buffer)))) | |
1194 | ||
84406262 MY |
1195 | (defun tag-find-file-of-tag (file) |
1196 | (let ((buf (tag-find-file-of-tag-noselect file))) | |
79e01623 JB |
1197 | (condition-case nil |
1198 | (switch-to-buffer buf) | |
1199 | (error (pop-to-buffer buf))))) | |
9708f7fc RM |
1200 | \f |
1201 | ;; `etags' TAGS file format support. | |
1202 | ||
b6176f64 RM |
1203 | ;; If the current buffer is a valid etags TAGS file, give it local values of |
1204 | ;; the tags table format variables, and return non-nil. | |
9708f7fc | 1205 | (defun etags-recognize-tags-table () |
b6176f64 | 1206 | (and (etags-verify-tags-table) |
9508896e JB |
1207 | ;; It is annoying to flash messages on the screen briefly, |
1208 | ;; and this message is not useful. -- rms | |
1209 | ;; (message "%s is an `etags' TAGS file" buffer-file-name) | |
dd2cedb9 DL |
1210 | (mapc (lambda (elt) (set (make-local-variable (car elt)) (cdr elt))) |
1211 | '((file-of-tag-function . etags-file-of-tag) | |
1212 | (tags-table-files-function . etags-tags-table-files) | |
1213 | (tags-completion-table-function . etags-tags-completion-table) | |
1214 | (snarf-tag-function . etags-snarf-tag) | |
1215 | (goto-tag-location-function . etags-goto-tag-location) | |
1216 | (find-tag-regexp-search-function . re-search-forward) | |
1217 | (find-tag-regexp-tag-order . (tag-re-match-p)) | |
1218 | (find-tag-regexp-next-line-after-failure-p . t) | |
1219 | (find-tag-search-function . search-forward) | |
1220 | (find-tag-tag-order . (tag-exact-file-name-match-p | |
ddc76b00 | 1221 | tag-file-name-match-p |
dd2cedb9 | 1222 | tag-exact-match-p |
d30ffe0e | 1223 | tag-implicit-name-match-p |
dd2cedb9 DL |
1224 | tag-symbol-match-p |
1225 | tag-word-match-p | |
fb7775eb | 1226 | tag-partial-file-name-match-p |
dd2cedb9 DL |
1227 | tag-any-match-p)) |
1228 | (find-tag-next-line-after-failure-p . nil) | |
1229 | (list-tags-function . etags-list-tags) | |
1230 | (tags-apropos-function . etags-tags-apropos) | |
1231 | (tags-included-tables-function . etags-tags-included-tables) | |
1232 | (verify-tags-table-function . etags-verify-tags-table) | |
1233 | )))) | |
9708f7fc | 1234 | |
b6176f64 | 1235 | ;; Return non-nil iff the current buffer is a valid etags TAGS file. |
9708f7fc | 1236 | (defun etags-verify-tags-table () |
e4fc4f58 | 1237 | ;; Use eq instead of = in case char-after returns nil. |
a1906d51 | 1238 | (eq (char-after (point-min)) ?\f)) |
9708f7fc | 1239 | |
79e01623 | 1240 | (defun etags-file-of-tag (&optional relative) |
9708f7fc | 1241 | (save-excursion |
5e0b7560 | 1242 | (re-search-backward "\f\n\\([^\n]+\\),[0-9]*\n") |
79e01623 JB |
1243 | (let ((str (buffer-substring (match-beginning 1) (match-end 1)))) |
1244 | (if relative | |
1245 | str | |
1246 | (expand-file-name str | |
1247 | (file-truename default-directory)))))) | |
9708f7fc | 1248 | |
aa27fbb4 | 1249 | |
9708f7fc RM |
1250 | (defun etags-tags-completion-table () |
1251 | (let ((table (make-vector 511 0))) | |
1252 | (save-excursion | |
1253 | (goto-char (point-min)) | |
4a92b718 RM |
1254 | ;; This monster regexp matches an etags tag line. |
1255 | ;; \1 is the string to match; | |
1256 | ;; \2 is not interesting; | |
1257 | ;; \3 is the guessed tag name; XXX guess should be better eg DEFUN | |
eb6a920f RM |
1258 | ;; \4 is not interesting; |
1259 | ;; \5 is the explicitly-specified tag name. | |
1260 | ;; \6 is the line to start searching at; | |
1261 | ;; \7 is the char to start searching at. | |
4a92b718 | 1262 | (while (re-search-forward |
a7885816 | 1263 | "^\\(\\([^\177]+[^-a-zA-Z0-9_+*$:\177]+\\)?\ |
7e7b42b2 GM |
1264 | \\([-a-zA-Z0-9_+*$?:]+\\)[^-a-zA-Z0-9_+*$?:\177]*\\)\177\ |
1265 | \\(\\([^\n\001]+\\)\001\\)?\\([0-9]+\\)?,\\([0-9]+\\)?\n" | |
4a92b718 | 1266 | nil t) |
eb6a920f | 1267 | (intern (if (match-beginning 5) |
4a92b718 | 1268 | ;; There is an explicit tag name. |
eb6a920f | 1269 | (buffer-substring (match-beginning 5) (match-end 5)) |
4a92b718 RM |
1270 | ;; No explicit tag name. Best guess. |
1271 | (buffer-substring (match-beginning 3) (match-end 3))) | |
1272 | table))) | |
9708f7fc RM |
1273 | table)) |
1274 | ||
79e01623 JB |
1275 | (defun etags-snarf-tag (&optional use-explicit) |
1276 | (let (tag-text line startpos explicit-start) | |
83287e5b RM |
1277 | (if (save-excursion |
1278 | (forward-line -1) | |
1279 | (looking-at "\f\n")) | |
1280 | ;; The match was for a source file name, not any tag within a file. | |
1281 | ;; Give text of t, meaning to go exactly to the location we specify, | |
1282 | ;; the beginning of the file. | |
1283 | (setq tag-text t | |
1284 | line nil | |
a1906d51 | 1285 | startpos (point-min)) |
83287e5b RM |
1286 | |
1287 | ;; Find the end of the tag and record the whole tag text. | |
1288 | (search-forward "\177") | |
1289 | (setq tag-text (buffer-substring (1- (point)) | |
1290 | (save-excursion (beginning-of-line) | |
1291 | (point)))) | |
79e01623 JB |
1292 | ;; If use-explicit is non nil and explicit tag is present, use it as part of |
1293 | ;; return value. Else just skip it. | |
1294 | (setq explicit-start (point)) | |
1295 | (when (and (search-forward "\001" (save-excursion (forward-line 1) (point)) t) | |
1296 | use-explicit) | |
1297 | (setq tag-text (buffer-substring explicit-start (1- (point))))) | |
1298 | ||
1299 | ||
83287e5b RM |
1300 | (if (looking-at "[0-9]") |
1301 | (setq line (string-to-int (buffer-substring | |
1302 | (point) | |
1303 | (progn (skip-chars-forward "0-9") | |
1304 | (point)))))) | |
1305 | (search-forward ",") | |
1306 | (if (looking-at "[0-9]") | |
1307 | (setq startpos (string-to-int (buffer-substring | |
1308 | (point) | |
1309 | (progn (skip-chars-forward "0-9") | |
1310 | (point))))))) | |
9708f7fc RM |
1311 | ;; Leave point on the next line of the tags file. |
1312 | (forward-line 1) | |
e1dec509 RM |
1313 | (cons tag-text (cons line startpos)))) |
1314 | ||
1315 | ;; TAG-INFO is a cons (TEXT LINE . POSITION) where TEXT is the initial part | |
1316 | ;; of a line containing the tag and POSITION is the character position of | |
83287e5b RM |
1317 | ;; TEXT within the file (starting from 1); LINE is the line number. If |
1318 | ;; TEXT is t, it means the tag refers to exactly LINE or POSITION | |
1319 | ;; (whichever is present, LINE having preference, no searching. Either | |
e1dec509 RM |
1320 | ;; LINE or POSITION may be nil; POSITION is used if present. If the tag |
1321 | ;; isn't exactly at the given position then look around that position using | |
1322 | ;; a search window which expands until it hits the start of file. | |
9708f7fc | 1323 | (defun etags-goto-tag-location (tag-info) |
e1dec509 | 1324 | (let ((startpos (cdr (cdr tag-info))) |
a0f09378 | 1325 | (line (car (cdr tag-info))) |
83287e5b RM |
1326 | offset found pat) |
1327 | (if (eq (car tag-info) t) | |
1328 | ;; Direct file tag. | |
1329 | (cond (line (goto-line line)) | |
a0f09378 | 1330 | (startpos (goto-char startpos)) |
83287e5b RM |
1331 | (t (error "etags.el BUG: bogus direct file tag"))) |
1332 | ;; This constant is 1/2 the initial search window. | |
1333 | ;; There is no sense in making it too small, | |
1334 | ;; since just going around the loop once probably | |
1335 | ;; costs about as much as searching 2000 chars. | |
1336 | (setq offset 1000 | |
1337 | found nil | |
1338 | pat (concat (if (eq selective-display t) | |
1339 | "\\(^\\|\^m\\)" "^") | |
1340 | (regexp-quote (car tag-info)))) | |
1341 | ;; The character position in the tags table is 0-origin. | |
1342 | ;; Convert it to a 1-origin Emacs character position. | |
1343 | (if startpos (setq startpos (1+ startpos))) | |
1344 | ;; If no char pos was given, try the given line number. | |
1345 | (or startpos | |
a0f09378 RM |
1346 | (if line |
1347 | (setq startpos (progn (goto-line line) | |
83287e5b RM |
1348 | (point))))) |
1349 | (or startpos | |
1350 | (setq startpos (point-min))) | |
1351 | ;; First see if the tag is right at the specified location. | |
1352 | (goto-char startpos) | |
1353 | (setq found (looking-at pat)) | |
1354 | (while (and (not found) | |
1355 | (progn | |
1356 | (goto-char (- startpos offset)) | |
1357 | (not (bobp)))) | |
1358 | (setq found | |
1359 | (re-search-forward pat (+ startpos offset) t) | |
1360 | offset (* 3 offset))) ; expand search window | |
1361 | (or found | |
1362 | (re-search-forward pat nil t) | |
1363 | (error "Rerun etags: `%s' not found in %s" | |
1364 | pat buffer-file-name))) | |
1365 | ;; Position point at the right place | |
1366 | ;; if the search string matched an extra Ctrl-m at the beginning. | |
1367 | (and (eq selective-display t) | |
1368 | (looking-at "\^m") | |
1369 | (forward-char 1)) | |
1370 | (beginning-of-line))) | |
9708f7fc RM |
1371 | |
1372 | (defun etags-list-tags (file) | |
a1906d51 | 1373 | (goto-char (point-min)) |
79e01623 JB |
1374 | (when (re-search-forward (concat "\f\n" "\\(" file "\\)" ",") nil t) |
1375 | (let ((path (save-excursion (forward-line 1) (file-of-tag))) | |
1376 | ;; Get the local value in the tags table | |
1377 | ;; buffer before switching buffers. | |
1378 | (goto-func goto-tag-location-function) | |
1379 | tag tag-info pt) | |
9708f7fc RM |
1380 | (forward-line 1) |
1381 | (while (not (or (eobp) (looking-at "\f"))) | |
79e01623 JB |
1382 | (setq tag-info (save-excursion (funcall snarf-tag-function t)) |
1383 | tag (car tag-info) | |
1384 | pt (with-current-buffer standard-output (point))) | |
1385 | (princ tag) | |
1386 | (when (= (aref tag 0) ?\() (princ " ...)")) | |
1387 | (with-current-buffer standard-output | |
1388 | (make-text-button pt (point) | |
1389 | 'tag-info tag-info | |
1390 | 'file-path path | |
1391 | 'goto-func goto-func | |
1392 | 'action (lambda (button) | |
1393 | (let ((tag-info (button-get button 'tag-info)) | |
1394 | (goto-func (button-get button 'goto-func))) | |
84406262 | 1395 | (tag-find-file-of-tag (button-get button 'file-path)) |
79e01623 JB |
1396 | (widen) |
1397 | (funcall goto-func tag-info))) | |
1398 | 'face 'tags-tag-face | |
1399 | 'type 'button)) | |
9708f7fc | 1400 | (terpri) |
274d013d | 1401 | (forward-line 1)) |
79e01623 | 1402 | t))) |
9708f7fc | 1403 | |
7e7b42b2 GM |
1404 | (defmacro tags-with-face (face &rest body) |
1405 | "Execute BODY, give output to `standard-output' face FACE." | |
06adf6b1 | 1406 | (let ((pp (make-symbol "start"))) |
286c138d | 1407 | `(let ((,pp (with-current-buffer standard-output (point)))) |
7e7b42b2 | 1408 | ,@body |
286c138d | 1409 | (put-text-property ,pp (with-current-buffer standard-output (point)) |
7e7b42b2 GM |
1410 | 'face ,face standard-output)))) |
1411 | ||
1412 | (defun etags-tags-apropos-additional (regexp) | |
1413 | "Display tags matching REGEXP from `tags-apropos-additional-actions'." | |
1414 | (with-current-buffer standard-output | |
1415 | (dolist (oba tags-apropos-additional-actions) | |
1416 | (princ "\n\n") | |
1417 | (tags-with-face 'highlight (princ (car oba))) | |
1418 | (princ":\n\n") | |
79e01623 | 1419 | (let* ((beg (point)) |
7e7b42b2 GM |
1420 | (symbs (car (cddr oba))) |
1421 | (ins-symb (lambda (sy) | |
1422 | (let ((sn (symbol-name sy))) | |
1423 | (when (string-match regexp sn) | |
79e01623 JB |
1424 | (make-text-button (point) |
1425 | (progn (princ sy) (point)) | |
1426 | 'action-internal(cadr oba) | |
1427 | 'action (lambda (button) (funcall | |
1428 | (button-get button 'action-internal) | |
1429 | (button-get button 'item))) | |
1430 | 'item sn | |
1431 | 'face tags-tag-face | |
1432 | 'type 'button) | |
7e7b42b2 GM |
1433 | (terpri)))))) |
1434 | (when (symbolp symbs) | |
1435 | (if (boundp symbs) | |
1436 | (setq symbs (symbol-value symbs)) | |
1437 | (insert "symbol `" (symbol-name symbs) "' has no value\n") | |
1438 | (setq symbs nil))) | |
1439 | (if (vectorp symbs) | |
1440 | (mapatoms ins-symb symbs) | |
1441 | (dolist (sy symbs) | |
1442 | (funcall ins-symb (car sy)))) | |
1443 | (sort-lines nil beg (point)))))) | |
1444 | ||
9708f7fc | 1445 | (defun etags-tags-apropos (string) |
7e7b42b2 GM |
1446 | (when tags-apropos-verbose |
1447 | (princ "Tags in file `") | |
1448 | (tags-with-face 'highlight (princ buffer-file-name)) | |
1449 | (princ "':\n\n")) | |
a1906d51 | 1450 | (goto-char (point-min)) |
9708f7fc RM |
1451 | (while (re-search-forward string nil t) |
1452 | (beginning-of-line) | |
79e01623 JB |
1453 | |
1454 | (let* (;; Get the local value in the tags table | |
1455 | ;; buffer before switching buffers. | |
1456 | (goto-func goto-tag-location-function) | |
1457 | (tag-info (save-excursion (funcall snarf-tag-function))) | |
89228b63 | 1458 | (tag (if (eq t (car tag-info)) nil (car tag-info))) |
79e01623 JB |
1459 | (file-path (save-excursion (if tag (file-of-tag) |
1460 | (save-excursion (next-line 1) | |
1461 | (file-of-tag))))) | |
1462 | (file-label (if tag (file-of-tag t) | |
1463 | (save-excursion (next-line 1) | |
1464 | (file-of-tag t)))) | |
89228b63 JB |
1465 | (pt (with-current-buffer standard-output (point)))) |
1466 | (if tag | |
1467 | (progn | |
79e01623 | 1468 | (princ (format "[%s]: " file-label)) |
89228b63 JB |
1469 | (princ tag) |
1470 | (when (= (aref tag 0) ?\() (princ " ...)")) | |
1471 | (with-current-buffer standard-output | |
79e01623 JB |
1472 | (make-text-button pt (point) |
1473 | 'tag-info tag-info | |
1474 | 'file-path file-path | |
1475 | 'goto-func goto-func | |
1476 | 'action (lambda (button) | |
1477 | (let ((tag-info (button-get button 'tag-info)) | |
1478 | (goto-func (button-get button 'goto-func))) | |
84406262 | 1479 | (tag-find-file-of-tag (button-get button 'file-path)) |
79e01623 JB |
1480 | (widen) |
1481 | (funcall goto-func tag-info))) | |
1482 | 'face 'tags-tag-face | |
1483 | 'type 'button))) | |
1484 | (princ (format "- %s" file-label)) | |
89228b63 JB |
1485 | (with-current-buffer standard-output |
1486 | (make-text-button pt (point) | |
79e01623 JB |
1487 | 'file-path file-path |
1488 | 'action (lambda (button) | |
84406262 | 1489 | (tag-find-file-of-tag (button-get button 'file-path)) |
79e01623 JB |
1490 | ;; Get the local value in the tags table |
1491 | ;; buffer before switching buffers. | |
1492 | (goto-char (point-min))) | |
1493 | 'face 'tags-tag-face | |
1494 | 'type 'button)) | |
89228b63 | 1495 | )) |
9708f7fc | 1496 | (terpri) |
7e7b42b2 GM |
1497 | (forward-line 1)) |
1498 | (when tags-apropos-verbose (princ "\n"))) | |
9708f7fc RM |
1499 | |
1500 | (defun etags-tags-table-files () | |
1501 | (let ((files nil) | |
1502 | beg) | |
1503 | (goto-char (point-min)) | |
1504 | (while (search-forward "\f\n" nil t) | |
1505 | (setq beg (point)) | |
610c25c1 RS |
1506 | (end-of-line) |
1507 | (skip-chars-backward "^," beg) | |
1508 | (or (looking-at "include$") | |
83287e5b | 1509 | (setq files (cons (buffer-substring beg (1- (point))) files)))) |
9708f7fc RM |
1510 | (nreverse files))) |
1511 | ||
1512 | (defun etags-tags-included-tables () | |
1513 | (let ((files nil) | |
1514 | beg) | |
1515 | (goto-char (point-min)) | |
1516 | (while (search-forward "\f\n" nil t) | |
1517 | (setq beg (point)) | |
610c25c1 RS |
1518 | (end-of-line) |
1519 | (skip-chars-backward "^," beg) | |
1520 | (if (looking-at "include$") | |
9708f7fc | 1521 | ;; Expand in the default-directory of the tags table buffer. |
610c25c1 | 1522 | (setq files (cons (expand-file-name (buffer-substring beg (1- (point)))) |
9708f7fc RM |
1523 | files)))) |
1524 | (nreverse files))) | |
1525 | \f | |
1526 | ;; Empty tags file support. | |
1527 | ||
b6176f64 RM |
1528 | ;; Recognize an empty file and give it local values of the tags table format |
1529 | ;; variables which do nothing. | |
7e7b42b2 | 1530 | (defun tags-recognize-empty-tags-table () |
9708f7fc | 1531 | (and (zerop (buffer-size)) |
dd2cedb9 DL |
1532 | (mapc (lambda (sym) (set (make-local-variable sym) 'ignore)) |
1533 | '(tags-table-files-function | |
1534 | tags-completion-table-function | |
1535 | find-tag-regexp-search-function | |
1536 | find-tag-search-function | |
1537 | tags-apropos-function | |
1538 | tags-included-tables-function)) | |
9708f7fc | 1539 | (set (make-local-variable 'verify-tags-table-function) |
7e7b42b2 | 1540 | (lambda () (zerop (buffer-size)))))) |
9708f7fc | 1541 | \f |
7e7b42b2 | 1542 | ;; Match qualifier functions for tagnames. |
2aa9d1be | 1543 | ;; These functions assume the etags file format defined in etc/ETAGS.EBNF. |
9708f7fc | 1544 | |
6218e8c6 RM |
1545 | ;; This might be a neat idea, but it's too hairy at the moment. |
1546 | ;;(defmacro tags-with-syntax (&rest body) | |
7e7b42b2 | 1547 | ;; `(let ((current (current-buffer)) |
6218e8c6 RM |
1548 | ;; (otable (syntax-table)) |
1549 | ;; (buffer (find-file-noselect (file-of-tag))) | |
1550 | ;; table) | |
1551 | ;; (unwind-protect | |
1552 | ;; (progn | |
1553 | ;; (set-buffer buffer) | |
1554 | ;; (setq table (syntax-table)) | |
1555 | ;; (set-buffer current) | |
1556 | ;; (set-syntax-table table) | |
7e7b42b2 GM |
1557 | ;; ,@body) |
1558 | ;; (set-syntax-table otable)))) | |
6218e8c6 | 1559 | ;;(put 'tags-with-syntax 'edebug-form-spec '(&rest form)) |
8a4c10dc | 1560 | |
2aa9d1be FP |
1561 | ;; exact file name match, i.e. searched tag must match complete file |
1562 | ;; name including directories parts if there are some. | |
1563 | (defun tag-exact-file-name-match-p (tag) | |
1564 | (and (looking-at ",[0-9\n]") | |
1565 | (save-excursion (backward-char (+ 2 (length tag))) | |
1566 | (looking-at "\f\n")))) | |
1567 | ;; file name match as above, but searched tag must match the file | |
1568 | ;; name not including the directories if there are some. | |
1569 | (defun tag-file-name-match-p (tag) | |
1570 | (and (looking-at ",[0-9\n]") | |
1571 | (save-excursion (backward-char (1+ (length tag))) | |
1572 | (looking-at "/")))) | |
1573 | ;; this / to detect we are after a directory separator is ok for unix, | |
1574 | ;; is there a variable that contains the regexp for directory separator | |
1575 | ;; on whatever operating system ? | |
1576 | ;; Looks like ms-win will lose here :). | |
1577 | ||
eb21e7ae | 1578 | ;; t if point is at a tag line that matches TAG exactly. |
9708f7fc | 1579 | ;; point should be just after a string that matches TAG. |
6218e8c6 | 1580 | (defun tag-exact-match-p (tag) |
add3312f | 1581 | ;; The match is really exact if there is an explicit tag name. |
63aeffd5 | 1582 | (or (and (eq (char-after (point)) ?\001) |
40ce9268 | 1583 | (eq (char-after (- (point) (length tag) 1)) ?\177)) |
63aeffd5 | 1584 | ;; We are not on the explicit tag name, but perhaps it follows. |
eb21e7ae RM |
1585 | (looking-at (concat "[^\177\n]*\177" (regexp-quote tag) "\001")))) |
1586 | ||
d30ffe0e FP |
1587 | ;; t if point is at a tag line that has an implicit name. |
1588 | ;; point should be just after a string that matches TAG. | |
1589 | (defun tag-implicit-name-match-p (tag) | |
1590 | ;; Look at the comment of the make_tag function in lib-src/etags.c for | |
1591 | ;; a textual description of the four rules. | |
1592 | (and (string-match "^[^ \t()=,;]+$" tag) ;rule #1 | |
1593 | (looking-at "[ \t()=,;]?\177") ;rules #2 and #4 | |
1594 | (save-excursion | |
1595 | (backward-char (1+ (length tag))) | |
1596 | (looking-at "[\n \t()=,;]")))) ;rule #3 | |
1597 | ||
eb21e7ae RM |
1598 | ;; t if point is at a tag line that matches TAG as a symbol. |
1599 | ;; point should be just after a string that matches TAG. | |
1600 | (defun tag-symbol-match-p (tag) | |
1601 | (and (looking-at "\\Sw.*\177") (looking-at "\\S_.*\177") | |
1602 | (save-excursion | |
1603 | (backward-char (1+ (length tag))) | |
1604 | (and (looking-at "\\Sw") (looking-at "\\S_"))))) | |
9708f7fc RM |
1605 | |
1606 | ;; t if point is at a tag line that matches TAG as a word. | |
1607 | ;; point should be just after a string that matches TAG. | |
1608 | (defun tag-word-match-p (tag) | |
1609 | (and (looking-at "\\b.*\177") | |
a0f09378 | 1610 | (save-excursion (backward-char (length tag)) |
9708f7fc RM |
1611 | (looking-at "\\b")))) |
1612 | ||
1ea98518 SM |
1613 | ;; partial file name match, i.e. searched tag must match a substring |
1614 | ;; of the file name (potentially including a directory separator). | |
fb7775eb | 1615 | (defun tag-partial-file-name-match-p (tag) |
1f21ea94 | 1616 | (and (looking-at ".*,[0-9\n]") |
fb7775eb GM |
1617 | (save-excursion (beginning-of-line) |
1618 | (backward-char 2) | |
1619 | (looking-at "\f\n")))) | |
5e882a6a | 1620 | |
9708f7fc RM |
1621 | ;; t if point is in a tag line with a tag containing TAG as a substring. |
1622 | (defun tag-any-match-p (tag) | |
1623 | (looking-at ".*\177")) | |
ff1f0fa6 | 1624 | |
9708f7fc RM |
1625 | ;; t if point is at a tag line that matches RE as a regexp. |
1626 | (defun tag-re-match-p (re) | |
1627 | (save-excursion | |
1628 | (beginning-of-line) | |
1629 | (let ((bol (point))) | |
1630 | (and (search-forward "\177" (save-excursion (end-of-line) (point)) t) | |
1631 | (re-search-backward re bol t))))) | |
1632 | \f | |
d5792fb2 RS |
1633 | (defcustom tags-loop-revert-buffers nil |
1634 | "*Non-nil means tags-scanning loops should offer to reread changed files. | |
1635 | These loops normally read each file into Emacs, but when a file | |
1636 | is already visited, they use the existing buffer. | |
1637 | When this flag is non-nil, they offer to revert the existing buffer | |
1638 | in the case where the file has changed since you visited it." | |
1639 | :type 'boolean | |
1640 | :group 'etags) | |
1641 | ||
c086701a | 1642 | ;;;###autoload |
9708f7fc RM |
1643 | (defun next-file (&optional initialize novisit) |
1644 | "Select next file among files in current tags table. | |
4f1388fd RM |
1645 | |
1646 | A first argument of t (prefix arg, if interactive) initializes to the | |
1647 | beginning of the list of files in the tags table. If the argument is | |
1648 | neither nil nor t, it is evalled to initialize the list of files. | |
9708f7fc RM |
1649 | |
1650 | Non-nil second argument NOVISIT means use a temporary buffer | |
1651 | to save time and avoid uninteresting warnings. | |
1652 | ||
1653 | Value is nil if the file was already visited; | |
1654 | if the file was newly read in, the value is the filename." | |
c20032c4 RS |
1655 | ;; Make the interactive arg t if there was any prefix arg. |
1656 | (interactive (list (if current-prefix-arg t))) | |
4f1388fd RM |
1657 | (cond ((not initialize) |
1658 | ;; Not the first run. | |
1659 | ) | |
1660 | ((eq initialize t) | |
1661 | ;; Initialize the list from the tags table. | |
1662 | (save-excursion | |
1663 | ;; Visit the tags table buffer to get its list of files. | |
1664 | (visit-tags-table-buffer) | |
83287e5b RM |
1665 | ;; Copy the list so we can setcdr below, and expand the file |
1666 | ;; names while we are at it, in this buffer's default directory. | |
1667 | (setq next-file-list (mapcar 'expand-file-name (tags-table-files))) | |
5c9e49a9 RM |
1668 | ;; Iterate over all the tags table files, collecting |
1669 | ;; a complete list of referenced file names. | |
1670 | (while (visit-tags-table-buffer t) | |
1671 | ;; Find the tail of the working list and chain on the new | |
1672 | ;; sublist for this tags table. | |
1673 | (let ((tail next-file-list)) | |
1674 | (while (cdr tail) | |
1675 | (setq tail (cdr tail))) | |
1676 | ;; Use a copy so the next loop iteration will not modify the | |
1677 | ;; list later returned by (tags-table-files). | |
2f14fde6 | 1678 | (if tail |
83287e5b RM |
1679 | (setcdr tail (mapcar 'expand-file-name (tags-table-files))) |
1680 | (setq next-file-list (mapcar 'expand-file-name | |
1681 | (tags-table-files)))))))) | |
4f1388fd RM |
1682 | (t |
1683 | ;; Initialize the list by evalling the argument. | |
1684 | (setq next-file-list (eval initialize)))) | |
7e7b42b2 | 1685 | (unless next-file-list |
5c9e49a9 RM |
1686 | (and novisit |
1687 | (get-buffer " *next-file*") | |
1688 | (kill-buffer " *next-file*")) | |
4fa15f59 | 1689 | (error "All files processed")) |
f042d383 | 1690 | (let* ((next (car next-file-list)) |
d5792fb2 RS |
1691 | (buffer (get-file-buffer next)) |
1692 | (new (not buffer))) | |
f042d383 RM |
1693 | ;; Advance the list before trying to find the file. |
1694 | ;; If we get an error finding the file, don't get stuck on it. | |
1695 | (setq next-file-list (cdr next-file-list)) | |
d5792fb2 RS |
1696 | ;; Optionally offer to revert buffers |
1697 | ;; if the files have changed on disk. | |
1698 | (and buffer tags-loop-revert-buffers | |
1699 | (not (verify-visited-file-modtime buffer)) | |
1700 | (with-current-buffer buffer | |
1701 | (revert-buffer t))) | |
9708f7fc | 1702 | (if (not (and new novisit)) |
f042d383 | 1703 | (set-buffer (find-file-noselect next novisit)) |
9708f7fc RM |
1704 | ;; Like find-file, but avoids random warning messages. |
1705 | (set-buffer (get-buffer-create " *next-file*")) | |
1706 | (kill-all-local-variables) | |
1707 | (erase-buffer) | |
f042d383 | 1708 | (setq new next) |
9708f7fc | 1709 | (insert-file-contents new nil)) |
9708f7fc | 1710 | new)) |
ff1f0fa6 | 1711 | |
9708f7fc RM |
1712 | (defvar tags-loop-operate nil |
1713 | "Form for `tags-loop-continue' to eval to change one file.") | |
1714 | ||
0f6b9c32 | 1715 | (defvar tags-loop-scan |
b0b3cce2 KH |
1716 | '(error "%s" |
1717 | (substitute-command-keys | |
4fa15f59 | 1718 | "No \\[tags-search] or \\[tags-query-replace] in progress")) |
9708f7fc RM |
1719 | "Form for `tags-loop-continue' to eval to scan one file. |
1720 | If it returns non-nil, this file needs processing by evalling | |
1721 | \`tags-loop-operate'. Otherwise, move on to the next file.") | |
ff1f0fa6 | 1722 | |
ece6e35a GM |
1723 | (defun tags-loop-eval (form) |
1724 | "Evaluate FORM and return its result. | |
1725 | Bind `case-fold-search' during the evaluation, depending on the value of | |
1726 | `tags-case-fold-search'." | |
1727 | (let ((case-fold-search (if (memq tags-case-fold-search '(t nil)) | |
1728 | tags-case-fold-search | |
1729 | case-fold-search))) | |
1730 | (eval form))) | |
ddc76b00 | 1731 | |
ece6e35a | 1732 | |
c086701a | 1733 | ;;;###autoload |
ff1f0fa6 JB |
1734 | (defun tags-loop-continue (&optional first-time) |
1735 | "Continue last \\[tags-search] or \\[tags-query-replace] command. | |
4f1388fd RM |
1736 | Used noninteractively with non-nil argument to begin such a command (the |
1737 | argument is passed to `next-file', which see). | |
78809db7 RM |
1738 | |
1739 | Two variables control the processing we do on each file: the value of | |
1740 | `tags-loop-scan' is a form to be executed on each file to see if it is | |
1741 | interesting (it returns non-nil if so) and `tags-loop-operate' is a form to | |
1742 | evaluate to operate on an interesting file. If the latter evaluates to | |
1743 | nil, we exit; otherwise we scan the next file." | |
ff1f0fa6 | 1744 | (interactive) |
9708f7fc | 1745 | (let (new |
565c8985 RS |
1746 | ;; Non-nil means we have finished one file |
1747 | ;; and should not scan it again. | |
1748 | file-finished | |
04528cda | 1749 | original-point |
9708f7fc RM |
1750 | (messaged nil)) |
1751 | (while | |
1752 | (progn | |
1753 | ;; Scan files quickly for the first or next interesting one. | |
04528cda | 1754 | ;; This starts at point in the current buffer. |
565c8985 | 1755 | (while (or first-time file-finished |
9708f7fc RM |
1756 | (save-restriction |
1757 | (widen) | |
ece6e35a | 1758 | (not (tags-loop-eval tags-loop-scan)))) |
04528cda GM |
1759 | ;; If nothing was found in the previous file, and |
1760 | ;; that file isn't in a temp buffer, restore point to | |
1761 | ;; where it was. | |
1762 | (when original-point | |
1763 | (goto-char original-point)) | |
1764 | ||
565c8985 | 1765 | (setq file-finished nil) |
9708f7fc | 1766 | (setq new (next-file first-time t)) |
04528cda | 1767 | |
9708f7fc RM |
1768 | ;; If NEW is non-nil, we got a temp buffer, |
1769 | ;; and NEW is the file name. | |
04528cda GM |
1770 | (when (or messaged |
1771 | (and (not first-time) | |
1772 | (> baud-rate search-slow-speed) | |
1773 | (setq messaged t))) | |
1774 | (message "Scanning file %s..." (or new buffer-file-name))) | |
1775 | ||
9708f7fc | 1776 | (setq first-time nil) |
04528cda | 1777 | (setq original-point (if new nil (point))) |
9708f7fc RM |
1778 | (goto-char (point-min))) |
1779 | ||
1780 | ;; If we visited it in a temp buffer, visit it now for real. | |
1781 | (if new | |
1782 | (let ((pos (point))) | |
1783 | (erase-buffer) | |
1784 | (set-buffer (find-file-noselect new)) | |
78809db7 | 1785 | (setq new nil) ;No longer in a temp buffer. |
9708f7fc | 1786 | (widen) |
04528cda GM |
1787 | (goto-char pos)) |
1788 | (push-mark original-point t)) | |
9708f7fc RM |
1789 | |
1790 | (switch-to-buffer (current-buffer)) | |
1791 | ||
1792 | ;; Now operate on the file. | |
1793 | ;; If value is non-nil, continue to scan the next file. | |
ece6e35a | 1794 | (tags-loop-eval tags-loop-operate)) |
565c8985 | 1795 | (setq file-finished t)) |
9708f7fc RM |
1796 | (and messaged |
1797 | (null tags-loop-operate) | |
1798 | (message "Scanning file %s...found" buffer-file-name)))) | |
9708f7fc | 1799 | ;;;###autoload (define-key esc-map "," 'tags-loop-continue) |
ff1f0fa6 | 1800 | |
c086701a | 1801 | ;;;###autoload |
4f1388fd | 1802 | (defun tags-search (regexp &optional file-list-form) |
9708f7fc | 1803 | "Search through all files listed in tags table for match for REGEXP. |
ff1f0fa6 JB |
1804 | Stops when a match is found. |
1805 | To continue searching for next match, use command \\[tags-loop-continue]. | |
1806 | ||
9708f7fc | 1807 | See documentation of variable `tags-file-name'." |
ff1f0fa6 JB |
1808 | (interactive "sTags search (regexp): ") |
1809 | (if (and (equal regexp "") | |
9708f7fc | 1810 | (eq (car tags-loop-scan) 're-search-forward) |
b6176f64 | 1811 | (null tags-loop-operate)) |
9708f7fc | 1812 | ;; Continue last tags-search as if by M-,. |
ff1f0fa6 | 1813 | (tags-loop-continue nil) |
06adf6b1 | 1814 | (setq tags-loop-scan `(re-search-forward ',regexp nil t) |
9708f7fc | 1815 | tags-loop-operate nil) |
4f1388fd | 1816 | (tags-loop-continue (or file-list-form t)))) |
ff1f0fa6 | 1817 | |
c086701a | 1818 | ;;;###autoload |
6922f208 | 1819 | (defun tags-query-replace (from to &optional delimited file-list-form start end) |
056f8a11 | 1820 | "Do `query-replace-regexp' of FROM with TO on all files listed in tags table. |
ff1f0fa6 | 1821 | Third arg DELIMITED (prefix arg) means replace only word-delimited matches. |
056f8a11 | 1822 | If you exit (\\[keyboard-quit], RET or q), you can resume the query replace |
ff1f0fa6 JB |
1823 | with the command \\[tags-loop-continue]. |
1824 | ||
9708f7fc | 1825 | See documentation of variable `tags-file-name'." |
17b9c33c | 1826 | (interactive (query-replace-read-args "Tags query replace (regexp)" t t)) |
06adf6b1 SM |
1827 | (setq tags-loop-scan `(let ,(unless (equal from (downcase from)) |
1828 | '((case-fold-search nil))) | |
1829 | (if (re-search-forward ',from nil t) | |
1830 | ;; When we find a match, move back | |
1831 | ;; to the beginning of it so perform-replace | |
1832 | ;; will see it. | |
1833 | (goto-char (match-beginning 0)))) | |
1834 | tags-loop-operate `(perform-replace ',from ',to t t ',delimited)) | |
4f1388fd | 1835 | (tags-loop-continue (or file-list-form t))) |
9708f7fc | 1836 | \f |
83287e5b RM |
1837 | (defun tags-complete-tags-table-file (string predicate what) |
1838 | (save-excursion | |
1839 | ;; If we need to ask for the tag table, allow that. | |
1840 | (let ((enable-recursive-minibuffers t)) | |
1841 | (visit-tags-table-buffer)) | |
1842 | (if (eq what t) | |
725349c8 SM |
1843 | (all-completions string (tags-table-files) predicate) |
1844 | (try-completion string (tags-table-files) predicate)))) | |
83287e5b | 1845 | |
c086701a | 1846 | ;;;###autoload |
83287e5b RM |
1847 | (defun list-tags (file &optional next-match) |
1848 | "Display list of tags in file FILE. | |
1849 | This searches only the first table in the list, and no included tables. | |
1850 | FILE should be as it appeared in the `etags' command, usually without a | |
1851 | directory specification." | |
1852 | (interactive (list (completing-read "List tags in file: " | |
1853 | 'tags-complete-tags-table-file | |
1854 | nil t nil))) | |
1855 | (with-output-to-temp-buffer "*Tags List*" | |
7e7b42b2 GM |
1856 | (princ "Tags in file `") |
1857 | (tags-with-face 'highlight (princ file)) | |
1858 | (princ "':\n\n") | |
83287e5b RM |
1859 | (save-excursion |
1860 | (let ((first-time t) | |
1861 | (gotany nil)) | |
1862 | (while (visit-tags-table-buffer (not first-time)) | |
1863 | (setq first-time nil) | |
1864 | (if (funcall list-tags-function file) | |
1865 | (setq gotany t))) | |
1866 | (or gotany | |
7e7b42b2 GM |
1867 | (error "File %s not in current tags tables" file))))) |
1868 | (with-current-buffer "*Tags List*" | |
79e01623 JB |
1869 | (apropos-mode) |
1870 | (setq buffer-read-only t))) | |
ff1f0fa6 | 1871 | |
c086701a | 1872 | ;;;###autoload |
9708f7fc RM |
1873 | (defun tags-apropos (regexp) |
1874 | "Display list of all tags in tags table REGEXP matches." | |
1875 | (interactive "sTags apropos (regexp): ") | |
ff1f0fa6 | 1876 | (with-output-to-temp-buffer "*Tags List*" |
7e7b42b2 GM |
1877 | (princ "Click mouse-2 to follow tags.\n\nTags matching regexp `") |
1878 | (tags-with-face 'highlight (princ regexp)) | |
1879 | (princ "':\n\n") | |
ff1f0fa6 | 1880 | (save-excursion |
47f3c459 RM |
1881 | (let ((first-time t)) |
1882 | (while (visit-tags-table-buffer (not first-time)) | |
1883 | (setq first-time nil) | |
7e7b42b2 GM |
1884 | (funcall tags-apropos-function regexp)))) |
1885 | (etags-tags-apropos-additional regexp)) | |
1886 | (with-current-buffer "*Tags List*" | |
89228b63 JB |
1887 | (apropos-mode) |
1888 | ;; apropos-mode is derived from fundamental-mode and it kills | |
1889 | ;; all local variables. | |
1890 | (setq buffer-read-only t))) | |
9708f7fc | 1891 | \f |
1ea98518 | 1892 | ;; XXX Kludge interface. |
aa228418 | 1893 | |
36278af3 MY |
1894 | (define-button-type 'tags-select-tags-table |
1895 | 'action (lambda (button) (select-tags-table-select)) | |
1896 | 'help-echo "RET, t or mouse-2: select tags table") | |
1897 | ||
9708f7fc | 1898 | ;; XXX If a file is in multiple tables, selection may get the wrong one. |
29add8b9 | 1899 | ;;;###autoload |
9708f7fc RM |
1900 | (defun select-tags-table () |
1901 | "Select a tags table file from a menu of those you have already used. | |
168e43e7 | 1902 | The list of tags tables to select from is stored in `tags-table-set-list'; |
9708f7fc RM |
1903 | see the doc of that variable if you want to add names to the list." |
1904 | (interactive) | |
1905 | (pop-to-buffer "*Tags Table List*") | |
1906 | (setq buffer-read-only nil) | |
1907 | (erase-buffer) | |
9708f7fc | 1908 | (let ((set-list tags-table-set-list) |
36278af3 MY |
1909 | (desired-point nil) |
1910 | b) | |
7e7b42b2 | 1911 | (when tags-table-list |
9708f7fc | 1912 | (setq desired-point (point-marker)) |
36278af3 | 1913 | (setq b (point)) |
9708f7fc | 1914 | (princ tags-table-list (current-buffer)) |
36278af3 | 1915 | (make-text-button b (point) 'type 'tags-select-tags-table) |
9708f7fc RM |
1916 | (insert "\C-m") |
1917 | (prin1 (car tags-table-list) (current-buffer)) ;invisible | |
7e7b42b2 | 1918 | (insert "\n")) |
9708f7fc | 1919 | (while set-list |
7e7b42b2 | 1920 | (unless (eq (car set-list) tags-table-list) |
36278af3 | 1921 | (setq b (point)) |
9708f7fc | 1922 | (princ (car set-list) (current-buffer)) |
36278af3 | 1923 | (make-text-button b (point) 'type 'tags-select-tags-table) |
9708f7fc RM |
1924 | (insert "\C-m") |
1925 | (prin1 (car (car set-list)) (current-buffer)) ;invisible | |
1926 | (insert "\n")) | |
1927 | (setq set-list (cdr set-list))) | |
7e7b42b2 | 1928 | (when tags-file-name |
9708f7fc RM |
1929 | (or desired-point |
1930 | (setq desired-point (point-marker))) | |
36278af3 MY |
1931 | (setq b (point)) |
1932 | (insert tags-file-name) | |
1933 | (make-text-button b (point) 'type 'tags-select-tags-table) | |
1934 | (insert "\C-m") | |
9708f7fc | 1935 | (prin1 tags-file-name (current-buffer)) ;invisible |
7e7b42b2 | 1936 | (insert "\n")) |
9708f7fc | 1937 | (setq set-list (delete tags-file-name |
9993b561 | 1938 | (apply 'nconc (cons (copy-sequence tags-table-list) |
9708f7fc RM |
1939 | (mapcar 'copy-sequence |
1940 | tags-table-set-list))))) | |
1941 | (while set-list | |
36278af3 MY |
1942 | (setq b (point)) |
1943 | (insert (car set-list)) | |
1944 | (make-text-button b (point) 'type 'tags-select-tags-table) | |
1945 | (insert "\C-m") | |
9708f7fc RM |
1946 | (prin1 (car set-list) (current-buffer)) ;invisible |
1947 | (insert "\n") | |
1948 | (setq set-list (delete (car set-list) set-list))) | |
a1906d51 | 1949 | (goto-char (point-min)) |
9708f7fc RM |
1950 | (insert-before-markers |
1951 | "Type `t' to select a tags table or set of tags tables:\n\n") | |
1952 | (if desired-point | |
1953 | (goto-char desired-point)) | |
1954 | (set-window-start (selected-window) 1 t)) | |
1955 | (set-buffer-modified-p nil) | |
ef90db45 RS |
1956 | (select-tags-table-mode)) |
1957 | ||
36278af3 MY |
1958 | (defvar select-tags-table-mode-map |
1959 | (let ((map (copy-keymap button-buffer-map))) | |
1960 | (define-key map "t" 'push-button) | |
1961 | (define-key map " " 'next-line) | |
1962 | (define-key map "\^?" 'previous-line) | |
1963 | (define-key map "n" 'next-line) | |
1964 | (define-key map "p" 'previous-line) | |
1965 | (define-key map "q" 'select-tags-table-quit) | |
1966 | map)) | |
ef90db45 RS |
1967 | |
1968 | (defun select-tags-table-mode () | |
1969 | "Major mode for choosing a current tags table among those already loaded. | |
1970 | ||
1971 | \\{select-tags-table-mode-map}" | |
1972 | (interactive) | |
1973 | (kill-all-local-variables) | |
9708f7fc | 1974 | (setq buffer-read-only t |
ef90db45 | 1975 | major-mode 'select-tags-table-mode |
9708f7fc | 1976 | mode-name "Select Tags Table") |
ef90db45 RS |
1977 | (use-local-map select-tags-table-mode-map) |
1978 | (setq selective-display t | |
1979 | selective-display-ellipses nil)) | |
83287e5b | 1980 | |
9708f7fc RM |
1981 | (defun select-tags-table-select () |
1982 | "Select the tags table named on this line." | |
1983 | (interactive) | |
1984 | (search-forward "\C-m") | |
1985 | (let ((name (read (current-buffer)))) | |
1986 | (visit-tags-table name) | |
1987 | (select-tags-table-quit) | |
1988 | (message "Tags table now %s" name))) | |
49116ac0 | 1989 | |
9708f7fc RM |
1990 | (defun select-tags-table-quit () |
1991 | "Kill the buffer and delete the selected window." | |
1992 | (interactive) | |
7591cf05 | 1993 | (quit-window t (selected-window))) |
9708f7fc | 1994 | \f |
1ea98518 | 1995 | ;; Note, there is another definition of this function in bindings.el. |
9708f7fc RM |
1996 | ;;;###autoload |
1997 | (defun complete-tag () | |
1998 | "Perform tags completion on the text around point. | |
83287e5b | 1999 | Completes to the set of names listed in the current tags table. |
9708f7fc | 2000 | The string to complete is chosen in the same way as the default |
ab13123a | 2001 | for \\[find-tag] (which see)." |
9708f7fc | 2002 | (interactive) |
ab13123a RM |
2003 | (or tags-table-list |
2004 | tags-file-name | |
b0b3cce2 KH |
2005 | (error "%s" |
2006 | (substitute-command-keys | |
4fa15f59 | 2007 | "No tags table loaded; try \\[visit-tags-table]"))) |
8a294d90 FP |
2008 | (let ((completion-ignore-case (if (memq tags-case-fold-search '(t nil)) |
2009 | tags-case-fold-search | |
2010 | case-fold-search)) | |
2011 | (pattern (funcall (or find-tag-default-function | |
9708f7fc RM |
2012 | (get major-mode 'find-tag-default-function) |
2013 | 'find-tag-default))) | |
2014 | beg | |
2015 | completion) | |
2016 | (or pattern | |
2017 | (error "Nothing to complete")) | |
2018 | (search-backward pattern) | |
2019 | (setq beg (point)) | |
2020 | (forward-char (length pattern)) | |
7e7b42b2 | 2021 | (setq completion (tags-complete-tag pattern nil nil)) |
9708f7fc RM |
2022 | (cond ((eq completion t)) |
2023 | ((null completion) | |
2024 | (message "Can't find completion for \"%s\"" pattern) | |
2025 | (ding)) | |
2026 | ((not (string= pattern completion)) | |
2027 | (delete-region beg (point)) | |
2028 | (insert completion)) | |
2029 | (t | |
2030 | (message "Making completion list...") | |
c6d38ae2 | 2031 | (with-output-to-temp-buffer "*Completions*" |
9708f7fc RM |
2032 | (display-completion-list |
2033 | (all-completions pattern 'tags-complete-tag nil))) | |
2034 | (message "Making completion list...%s" "done"))))) | |
dd2cedb9 DL |
2035 | |
2036 | (dolist (x '("^No tags table in use; use .* to select one$" | |
2037 | "^There is no default tag$" | |
2038 | "^No previous tag locations$" | |
2039 | "^File .* is not a valid tags table$" | |
2040 | "^No \\(more \\|\\)tags \\(matching\\|containing\\) " | |
2041 | "^Rerun etags: `.*' not found in " | |
2042 | "^All files processed$" | |
2043 | "^No .* or .* in progress$" | |
2044 | "^File .* not in current tags tables$" | |
2045 | "^No tags table loaded" | |
2046 | "^Nothing to complete$")) | |
2047 | (add-to-list 'debug-ignored-errors x)) | |
9708f7fc RM |
2048 | \f |
2049 | (provide 'etags) | |
e5167999 ER |
2050 | |
2051 | ;;; etags.el ends here |