Mercurial > hg > xemacs-beta
comparison lisp/etags.el @ 217:d44af0c54775 r20-4b7
Import from CVS: tag r20-4b7
| author | cvs |
|---|---|
| date | Mon, 13 Aug 2007 10:08:34 +0200 |
| parents | |
| children | 262b8bb4a523 |
comparison
equal
deleted
inserted
replaced
| 216:43306a74e31c | 217:d44af0c54775 |
|---|---|
| 1 ;;; etags.el --- etags facility for Emacs | |
| 2 | |
| 3 ;; Copyright 1985, 1986, 1988, 1990 Free Software Foundation, Inc. | |
| 4 | |
| 5 ;; Keywords: tools | |
| 6 | |
| 7 ;; This file is part of XEmacs. | |
| 8 | |
| 9 ;; GNU Emacs is distributed in the hope that it will be useful, | |
| 10 ;; but WITHOUT ANY WARRANTY. No author or distributor | |
| 11 ;; accepts responsibility to anyone for the consequences of using it | |
| 12 ;; or for whether it serves any particular purpose or works at all, | |
| 13 ;; unless he says so in writing. Refer to the GNU Emacs General Public | |
| 14 ;; License for full details. | |
| 15 | |
| 16 ;; Everyone is granted permission to copy, modify and redistribute | |
| 17 ;; GNU Emacs, but only under the conditions described in the | |
| 18 ;; GNU Emacs General Public License. A copy of this license is | |
| 19 ;; supposed to have been given to you along with GNU Emacs so you | |
| 20 ;; can know your rights and responsibilities. It should be in a | |
| 21 ;; file named COPYING. Among other things, the copyright notice | |
| 22 ;; and this notice must be preserved on all copies. | |
| 23 | |
| 24 ;;; Synched up with: Not synched with FSF. (This file is almost | |
| 25 ;;; completely different from FSF's etags.el. It appears that an | |
| 26 ;;; early version of this file (tags.el) was rewritten by two | |
| 27 ;;; different people; we got one, FSF got the other. Various | |
| 28 ;;; people have said that our version is better and faster. | |
| 29 | |
| 30 | |
| 31 ;; TODO: | |
| 32 ;; 1. place cursor in echo area while searching | |
| 33 ;; 2. document! | |
| 34 ;; 3. determine semantics of interactively setting the tags file for a buffer | |
| 35 | |
| 36 ;; Comments with **** mean something is left to be done. | |
| 37 | |
| 38 ;; Derived from the original lisp/tags.el. | |
| 39 | |
| 40 ;; Ideas and code from the work of the following people: | |
| 41 ;; Andy Norman <ange@hplb.hpl.hp.com>, author of ange-tags.el | |
| 42 ;; Ramana Rao <rao@arisia.xerox.com> | |
| 43 ;; John Sturdy <jcgs@harlqn.co.uk>, author of tags-helper.el | |
| 44 ;; Henry Kautz <kautz@allegra.att.com>, author of tag-completion.el | |
| 45 ;; Dan LaLiberte <liberte@cs.uiuc.edu>, author of local-tags.el | |
| 46 ;; Tom Dietterich <tgd@turing.cs.orst.edu>, author of quest.el | |
| 47 ;; The author(s) of lisp/simple.el | |
| 48 ;; Duke Briscoe <briscoe@cs.yale.edu> | |
| 49 ;; Lynn Slater <lrs@indetech.com>, author of location.el | |
| 50 ;; Shinichirou Sugou <shin@sgtp.apple.juice.or.jp> | |
| 51 ;; an unidentified anonymous elisp hacker | |
| 52 ;; Kyle Jones <kyle_jones@wonderworks.com> | |
| 53 ;; added "Exact match, then inexact" code | |
| 54 ;; added support for include directive. | |
| 55 | |
| 56 (require 'thing) | |
| 57 | |
| 58 | |
| 59 ;; Auxiliary functions | |
| 60 | |
| 61 (defun tags-delete (item list) | |
| 62 "Delete the item from the list, testing with equal. Copies the list." | |
| 63 (delete item (copy-list list))) | |
| 64 | |
| 65 (defun tags-remove-duplicates (list) | |
| 66 "Delete equal duplicates from the list; copies the list." | |
| 67 (let (res) | |
| 68 (dolist (el list) | |
| 69 (unless (member el res) | |
| 70 (push el res))) | |
| 71 (nreverse res))) | |
| 72 | |
| 73 | |
| 74 ;; Tag tables for a buffer | |
| 75 | |
| 76 (defgroup etags nil | |
| 77 "Etags facility for Emacs" | |
| 78 :prefix "tags-" | |
| 79 :group 'tools) | |
| 80 | |
| 81 | |
| 82 ;;;###autoload | |
| 83 (defcustom tags-build-completion-table 'ask | |
| 84 "*If this variable is nil, then tags completion is disabled. | |
| 85 If this variable is t, then things which prompt for tags will do so with | |
| 86 completion across all known tags. | |
| 87 If this variable is the symbol `ask', then you will be asked whether each | |
| 88 tags table should be added to the completion list as it is read in. | |
| 89 (With the exception that for very small tags tables, you will not be asked, | |
| 90 since they can be parsed quickly.)" | |
| 91 :type '(radio (const :tag "Disabled" nil) | |
| 92 (const :tag "Complete All" t) | |
| 93 (const :tag "Ask" ask)) | |
| 94 :group 'etags) | |
| 95 | |
| 96 ;;;###autoload | |
| 97 (defcustom tags-always-exact nil | |
| 98 "*If this variable is non-nil, then tags always looks for exact matches." | |
| 99 :type 'boolean | |
| 100 :group 'etags) | |
| 101 | |
| 102 ;;;###autoload | |
| 103 (defcustom tag-table-alist nil | |
| 104 "*A list which determines which tags files are active for a buffer. | |
| 105 This is not really an association list, in that all elements are | |
| 106 checked. The CAR of each element of this list is a pattern against | |
| 107 which the buffer's file name is compared; if it matches, then the CDR | |
| 108 of the list should be the name of the tags table to use. If more than | |
| 109 one element of this list matches the buffer's file name, then all of | |
| 110 the associated tags tables will be used. Earlier ones will be | |
| 111 searched first. | |
| 112 | |
| 113 If the CAR of elements of this list are strings, then they are treated | |
| 114 as regular-expressions against which the file is compared (like the | |
| 115 auto-mode-alist). If they are not strings, then they are evaluated. | |
| 116 If they evaluate to non-nil, then the current buffer is considered to | |
| 117 match. | |
| 118 | |
| 119 If the CDR of the elements of this list are strings, then they are | |
| 120 assumed to name a TAGS file. If they name a directory, then the string | |
| 121 \"TAGS\" is appended to them to get the file name. If they are not | |
| 122 strings, then they are evaluated, and must return an appropriate string. | |
| 123 | |
| 124 For example: | |
| 125 (setq tag-table-alist | |
| 126 '((\"/usr/src/public/perl/\" . \"/usr/src/public/perl/perl-3.0/\") | |
| 127 (\"\\\\.el$\" . \"/usr/local/emacs/src/\") | |
| 128 (\"/jbw/gnu/\" . \"/usr15/degree/stud/jbw/gnu/\") | |
| 129 (\"\" . \"/usr/local/emacs/src/\") | |
| 130 )) | |
| 131 | |
| 132 This means that anything in the /usr/src/public/perl/ directory should use | |
| 133 the TAGS file /usr/src/public/perl/perl-3.0/TAGS; and file ending in .el should | |
| 134 use the TAGS file /usr/local/emacs/src/TAGS; and anything in or below the | |
| 135 directory /jbw/gnu/ should use the TAGS file /usr15/degree/stud/jbw/gnu/TAGS. | |
| 136 A file called something like \"/usr/jbw/foo.el\" would use both the TAGS files | |
| 137 /usr/local/emacs/src/TAGS and /usr15/degree/stud/jbw/gnu/TAGS (in that order) | |
| 138 because it matches both patterns. | |
| 139 | |
| 140 If the buffer-local variable `buffer-tag-table' is set, then it names a tags | |
| 141 table that is searched before all others when find-tag is executed from this | |
| 142 buffer. | |
| 143 | |
| 144 If there is a file called \"TAGS\" in the same directory as the file in | |
| 145 question, then that tags file will always be used as well (after the | |
| 146 `buffer-tag-table' but before the tables specified by this list.) | |
| 147 | |
| 148 If the variable tags-file-name is set, then the tags file it names will apply | |
| 149 to all buffers (for backwards compatibility.) It is searched first. | |
| 150 " | |
| 151 :type '(repeat (cons (choice :value "" | |
| 152 (regexp :tag "Buffer regexp") | |
| 153 (function :tag "Expression")) | |
| 154 (string :tag "Tag file or directory"))) | |
| 155 :group 'etags) | |
| 156 | |
| 157 (defvar buffer-tag-table nil | |
| 158 "*The additional name of one TAGS table to be used for this buffer. | |
| 159 You can set this with meta-x set-buffer-tag-table. See the documentation | |
| 160 for the variable `tag-table-alist' for more information.") | |
| 161 (make-variable-buffer-local 'buffer-tag-table) | |
| 162 | |
| 163 (defcustom tags-file-name nil | |
| 164 "*The name of the tags-table used by all buffers. | |
| 165 This is for backwards compatibility, and is largely supplanted by the | |
| 166 variable tag-table-alist." | |
| 167 :type '(choice (const nil) string) | |
| 168 :group 'etags) | |
| 169 | |
| 170 | |
| 171 ;; XEmacs change: added tags-auto-read-changed-tag-files | |
| 172 (defcustom tags-auto-read-changed-tag-files nil | |
| 173 "*If non-nil, always re-read changed TAGS file without prompting, if nil | |
| 174 then prompt if changed TAGS file should be re-read." | |
| 175 :type 'boolean | |
| 176 :group 'etags) | |
| 177 | |
| 178 (defun buffer-tag-table-list () | |
| 179 "Returns a list (ordered) of the tags tables which should be used for | |
| 180 the current buffer." | |
| 181 (let (result expression) | |
| 182 (when buffer-tag-table | |
| 183 (push buffer-tag-table result)) | |
| 184 (when (file-readable-p (concat default-directory "TAGS")) | |
| 185 (push (concat default-directory "TAGS") result)) | |
| 186 (let ((key (or buffer-file-name | |
| 187 (concat default-directory (buffer-name)))) | |
| 188 (alist tag-table-alist)) | |
| 189 (while alist | |
| 190 (setq expression (car (car alist))) | |
| 191 ;; If the car of the alist item is a string, apply it as a regexp | |
| 192 ;; to the buffer-file-name. Otherwise, evaluate it. If the | |
| 193 ;; regexp matches, or the expression evaluates non-nil, then this | |
| 194 ;; item in tag-table-alist applies to this buffer. | |
| 195 (when (if (stringp expression) | |
| 196 (string-match expression key) | |
| 197 (condition-case nil | |
| 198 (eval expression) | |
| 199 (error nil))) | |
| 200 ;; Now evaluate the cdr of the alist item to get the name of | |
| 201 ;; the tag table file. | |
| 202 (setq expression | |
| 203 (condition-case nil | |
| 204 (eval (cdr (car alist))) | |
| 205 (error nil))) | |
| 206 (if (stringp expression) | |
| 207 (setq result (cons expression result)) | |
| 208 (error "Expression in tag-table-alist evaluated to non-string"))) | |
| 209 (pop alist))) | |
| 210 (or result tags-file-name | |
| 211 ;; **** I don't know if this is the right place to do this, | |
| 212 ;; **** Maybe it would be better to do this after (delq nil result). | |
| 213 (call-interactively 'visit-tags-table)) | |
| 214 (when tags-file-name | |
| 215 (setq result (nconc result (list tags-file-name)))) | |
| 216 (setq result | |
| 217 (mapcar | |
| 218 (lambda (name) | |
| 219 (if (file-directory-p name) | |
| 220 (setq name (concat (file-name-as-directory name) "TAGS"))) | |
| 221 (if (file-readable-p name) | |
| 222 (save-current-buffer | |
| 223 ;; get-tag-table-buffer has side-effects | |
| 224 (set-buffer (get-tag-table-buffer name)) | |
| 225 buffer-file-name))) | |
| 226 result)) | |
| 227 (setq result (delq nil result)) | |
| 228 (or result (error "Buffer has no associated tag tables")) | |
| 229 (tags-remove-duplicates (nreverse result)))) | |
| 230 | |
| 231 ;;;###autoload | |
| 232 (defun visit-tags-table (file) | |
| 233 "Tell tags commands to use tags table file FILE first. | |
| 234 FILE should be the name of a file created with the `etags' program. | |
| 235 A directory name is ok too; it means file TAGS in that directory." | |
| 236 (interactive (list (read-file-name "Visit tags table: (default TAGS) " | |
| 237 default-directory | |
| 238 (expand-file-name "TAGS" default-directory) | |
| 239 t))) | |
| 240 (if (string-equal file "") | |
| 241 (setq tags-file-name nil) | |
| 242 (progn | |
| 243 (setq file (expand-file-name file)) | |
| 244 (if (file-directory-p file) | |
| 245 (setq file (expand-file-name "TAGS" file))) | |
| 246 (setq tags-file-name file)))) | |
| 247 | |
| 248 (defun set-buffer-tag-table (file) | |
| 249 "In addition to the tags tables specified by the variable `tag-table-alist', | |
| 250 each buffer can have one additional table. This command sets that. | |
| 251 See the documentation for the variable `tag-table-alist' for more information." | |
| 252 (interactive | |
| 253 (list | |
| 254 (read-file-name "Visit tags table: (directory sufficient) " | |
| 255 nil default-directory t))) | |
| 256 (or file (error "No TAGS file name supplied")) | |
| 257 (setq file (expand-file-name file)) | |
| 258 (when (file-directory-p file) | |
| 259 (setq file (concat file "TAGS"))) | |
| 260 (or (file-exists-p file) (error "TAGS file missing: %s" file)) | |
| 261 (setq buffer-tag-table file)) | |
| 262 | |
| 263 | |
| 264 ;; Manipulating the tag table buffer | |
| 265 | |
| 266 (defconst tag-table-completion-status nil | |
| 267 "Indicates whether a completion table has been built, or has explicitly not | |
| 268 been built. this is nil, t, or 'disabled.") | |
| 269 (make-variable-buffer-local 'tag-table-completion-status) | |
| 270 | |
| 271 (defcustom make-tags-files-invisible nil | |
| 272 "*If non-nil, TAGS-files will not show up in buffer-lists or be | |
| 273 selectable (or deletable.)" | |
| 274 :type 'boolean | |
| 275 :group 'etags) | |
| 276 | |
| 277 (defconst tag-table-files nil | |
| 278 "If the current buffer is a TAGS table, this holds a list of the files | |
| 279 referenced by this file, or nil if that hasn't been computed yet.") | |
| 280 (make-variable-buffer-local 'tag-table-files) | |
| 281 | |
| 282 (defun get-tag-table-buffer (tag-table) | |
| 283 "Returns a buffer visiting the given TAGS table, reverting if appropriate, | |
| 284 and possibly building a completion-table." | |
| 285 (or (stringp tag-table) | |
| 286 (error "Bad tags file name supplied: %s" tag-table)) | |
| 287 ;; add support for removing symbolic links from name | |
| 288 (if (fboundp 'symlink-expand-file-name) | |
| 289 (setq tag-table (symlink-expand-file-name tag-table))) | |
| 290 (let (buf build-completion check-name) | |
| 291 (setq buf (get-file-buffer tag-table)) | |
| 292 (or buf | |
| 293 (if (file-readable-p tag-table) | |
| 294 (setq buf (find-file-noselect tag-table) | |
| 295 check-name t) | |
| 296 (error "No such tags file: %s" tag-table))) | |
| 297 (with-current-buffer buf | |
| 298 ;; make the TAGS buffer invisible | |
| 299 (when (and check-name | |
| 300 make-tags-files-invisible | |
| 301 (string-match "\\`[^ ]" (buffer-name))) | |
| 302 (rename-buffer (generate-new-buffer-name | |
| 303 (concat " " (buffer-name))))) | |
| 304 (or (verify-visited-file-modtime buf) | |
| 305 ;; XEmacs change: added tags-auto-read-changed-tag-files | |
| 306 (cond ((or tags-auto-read-changed-tag-files (yes-or-no-p | |
| 307 (format "Tags file %s has changed, read new contents? " | |
| 308 tag-table))) | |
| 309 (when tags-auto-read-changed-tag-files | |
| 310 (message "Tags file %s has changed, reading new contents..." | |
| 311 tag-table)) | |
| 312 (revert-buffer t t) | |
| 313 (if (eq tag-table-completion-status t) | |
| 314 (setq tag-table-completion-status nil)) | |
| 315 (setq tag-table-files nil)))) | |
| 316 (or (eq (char-after 1) ?\f) | |
| 317 (error "File %s not a valid tags file" tag-table)) | |
| 318 (or (memq tag-table-completion-status '(t disabled)) | |
| 319 (setq build-completion t)) | |
| 320 (and build-completion | |
| 321 (if (cond | |
| 322 ((eq tags-build-completion-table nil) | |
| 323 nil) | |
| 324 ((eq tags-build-completion-table t) | |
| 325 t) | |
| 326 ((eq tags-build-completion-table 'ask) | |
| 327 ;; don't bother asking for small ones | |
| 328 (or (< (buffer-size) 20000) | |
| 329 (y-or-n-p | |
| 330 (format "Build tag completion table for %s? " | |
| 331 tag-table)))) | |
| 332 (t (error | |
| 333 "tags-build-completion-table is not t, nil, or ask."))) | |
| 334 (condition-case nil | |
| 335 (progn | |
| 336 (add-to-tag-completion-table) | |
| 337 (setq tag-table-completion-status t)) | |
| 338 ;; Allow user to C-g out correctly | |
| 339 (quit | |
| 340 (setq tag-table-completion-status nil) | |
| 341 (setq quit-flag t) | |
| 342 (eval t))) | |
| 343 (setq tag-table-completion-status 'disabled)))) | |
| 344 buf)) | |
| 345 | |
| 346 (defun file-of-tag () | |
| 347 "Return the file name of the file whose tags point is within. | |
| 348 Assumes the tag table is the current buffer. | |
| 349 File name returned is relative to tag table file's directory." | |
| 350 (let ((opoint (point)) | |
| 351 prev size) | |
| 352 (save-excursion | |
| 353 (goto-char (point-min)) | |
| 354 (while (< (point) opoint) | |
| 355 (forward-line 1) | |
| 356 (end-of-line) | |
| 357 (skip-chars-backward "^,\n") | |
| 358 (setq prev (point) | |
| 359 size (read (current-buffer))) | |
| 360 (goto-char prev) | |
| 361 (forward-line 1) | |
| 362 ;; New include syntax | |
| 363 ;; filename,include | |
| 364 ;; tacked on to the end of a tag file means use filename | |
| 365 ;; as a tag file before giving up. | |
| 366 ;; Skip it here. | |
| 367 (if (not (eq size 'include)) | |
| 368 (forward-char size))) | |
| 369 (goto-char (1- prev)) | |
| 370 (buffer-substring (point) (point-at-bol))))) | |
| 371 | |
| 372 (defun tag-table-include-files () | |
| 373 "Return all file names associated with `include' directives in a tag buffer." | |
| 374 ;; New include syntax | |
| 375 ;; filename,include | |
| 376 ;; tacked on to the end of a tag file means use filename as a | |
| 377 ;; tag file before giving up. | |
| 378 (let ((files nil)) | |
| 379 (save-excursion | |
| 380 (goto-char (point-min)) | |
| 381 (while (re-search-forward "\f\n\\(.*\\),include$" nil t) | |
| 382 (setq files (cons (match-string 1) files)))) | |
| 383 files )) | |
| 384 | |
| 385 (defun tag-table-files (tag-table) | |
| 386 "Returns a list of the files referenced by the named TAGS table." | |
| 387 (with-current-buffer (get-tag-table-buffer tag-table) | |
| 388 (or tag-table-files | |
| 389 (let (files prev size) | |
| 390 (goto-char (point-min)) | |
| 391 (while (not (eobp)) | |
| 392 (forward-line 1) | |
| 393 (end-of-line) | |
| 394 (skip-chars-backward "^,\n") | |
| 395 (setq prev (point) | |
| 396 size (read (current-buffer))) | |
| 397 (goto-char prev) | |
| 398 (push (expand-file-name (buffer-substring (1- (point)) | |
| 399 (point-at-bol)) | |
| 400 default-directory) | |
| 401 files) | |
| 402 (forward-line 1) | |
| 403 (forward-char size)) | |
| 404 (setq tag-table-files (nreverse files)))) | |
| 405 tag-table-files)) | |
| 406 | |
| 407 ;; **** should this be on previous page? | |
| 408 (defun buffer-tag-table-files () | |
| 409 "Returns a list of all files referenced by all TAGS tables that | |
| 410 this buffer uses." | |
| 411 (apply #'nconc | |
| 412 (mapcar #'tag-table-files (buffer-tag-table-list)))) | |
| 413 | |
| 414 | |
| 415 ;; Building the completion table | |
| 416 | |
| 417 ;; Test cases for building completion table; must handle these properly: | |
| 418 ;; Lisp_Int, XSETINT, current_column 60,2282 | |
| 419 ;; Lisp_Int, XSETINT, point>NumCharacters ? 0 : CharAt(363,9935 | |
| 420 ;; Lisp_Int, XSETINT, point<=FirstCharacter ? 0 : CharAt(366,10108 | |
| 421 ;; point<=FirstCharacter || CharAt(378,10630 | |
| 422 ;; point>NumCharacters || CharAt(382,10825 | |
| 423 ;; DEFUN ("x-set-foreground-color", Fx_set_foreground_color,191,4562 | |
| 424 ;; DEFUN ("x-set-foreground-color", Fx_set_foreground_color,191,4562 | |
| 425 ;; DEFUN ("*", Ftimes,1172,32079 | |
| 426 ;; DEFUN ("/=", Fneq,1035,28839 | |
| 427 ;; defun_internal 4199,101362 | |
| 428 ;; int pure[PURESIZE / sizeof 53,1564 | |
| 429 ;; char staticvec1[NSTATICS * sizeof 667,17608 | |
| 430 ;; Date: 04 May 87 23:53:11 PDT 26,1077 | |
| 431 ;; #define anymacroname(324,4344 | |
| 432 ;; (define-key ctl-x-map 311,11784 | |
| 433 ;; (define-abbrev-table 'c-mode-abbrev-table 24,1016 | |
| 434 ;; static char *skip_white(116,3443 | |
| 435 ;; static foo 348,11643 | |
| 436 ;; (defun texinfo-insert-@code 91,3358 | |
| 437 ;; (defvar texinfo-kindex)29,1105 | |
| 438 ;; (defun texinfo-format-\. 548,18376 | |
| 439 ;; (defvar sm::menu-kludge-y 621,22726 | |
| 440 ;; (defvar *mouse-drag-window* 103,3642 | |
| 441 ;; (defun simula-back-level(317,11263 | |
| 442 ;; } DPxAC,380,14024 | |
| 443 ;; } BM_QCB;69,2990 | |
| 444 ;; #define MTOS_DONE\t | |
| 445 | |
| 446 ;; "^[^ ]+ +\\([^ ]+\\) " | |
| 447 | |
| 448 ;; void *find_cactus_segment(116,2444 | |
| 449 ;; void *find_pdb_segment(162,3688 | |
| 450 ;; void init_dclpool(410,10739 | |
| 451 ;; WORD insert_draw_command(342,8881 | |
| 452 ;; void *req_pdbmem(579,15574 | |
| 453 | |
| 454 (defvar tag-completion-table (make-vector 511 0)) | |
| 455 | |
| 456 (defvar tag-symbol) | |
| 457 (defvar tag-table-symbol) | |
| 458 (defvar tag-symbol-tables) | |
| 459 (defvar buffer-tag-table-list) | |
| 460 | |
| 461 (defmacro intern-tag-symbol (tag) | |
| 462 `(progn | |
| 463 (setq tag-symbol (intern ,tag tag-completion-table) | |
| 464 tag-symbol-tables (and (boundp tag-symbol) | |
| 465 (symbol-value tag-symbol))) | |
| 466 (or (memq tag-table-symbol tag-symbol-tables) | |
| 467 (set tag-symbol (cons tag-table-symbol tag-symbol-tables))))) | |
| 468 | |
| 469 ;; Can't use "\\s " in these patterns because that will include newline | |
| 470 (defconst tags-DEFUN-pattern | |
| 471 "DEFUN[ \t]*(\"\\([^\"]+\\)\",[ \t]*\\(\\(\\sw\\|\\s_\\)+\\),\C-?") | |
| 472 (defconst tags-array-pattern ".*[ \t]+\\([^ \[]+\\)\\[") | |
| 473 (defconst tags-def-pattern | |
| 474 "\\(.*[ \t]+\\)?\\**\\(\\(\\sw\\|\\s_\\)+\\)[ ();,\t]*\C-?" | |
| 475 ;; "\\(.*[ \t]+\\)?\\(\\(\\sw\\|\\s_\\)+\\)[ ()]*\C-?" | |
| 476 ;; "\\(\\sw\\|\\s_\\)+[ ()]*\C-?" | |
| 477 ) | |
| 478 (defconst tags-file-pattern "^\f\n\\(.+\\),[0-9]+\n") | |
| 479 | |
| 480 (defun add-to-tag-completion-table () | |
| 481 "Sucks the current buffer (a TAGS table) into the completion-table." | |
| 482 (message "Adding %s to tags completion table..." | |
| 483 buffer-file-name) | |
| 484 (goto-char (point-min)) | |
| 485 (let ((tag-table-symbol (intern buffer-file-name tag-completion-table)) | |
| 486 ;; tag-table-symbol is used by intern-tag-symbol | |
| 487 filename file-type name name2 tag-symbol | |
| 488 tag-symbol-tables | |
| 489 (case-fold-search nil)) | |
| 490 ;; loop over the files mentioned in the TAGS file | |
| 491 ;; for each file, try to find its major-mode, | |
| 492 ;; then process tags appropriately | |
| 493 (while (looking-at tags-file-pattern) | |
| 494 (goto-char (match-end 0)) | |
| 495 (setq filename (file-name-sans-versions | |
| 496 (buffer-substring (match-beginning 1) | |
| 497 (match-end 1))) | |
| 498 ;; Old code used to check auto-mode-alist for the proper | |
| 499 ;; file-type. This is too slow, as it breaks the | |
| 500 ;; compiled-regexp caching, and slows the whole thing | |
| 501 ;; down. We'll use the shotgun approach with only two | |
| 502 ;; regexps. | |
| 503 file-type (cond ((string-match "\\.\\([cC]\\|cc\\|cxx\\)\\'" | |
| 504 filename) | |
| 505 'c-mode) | |
| 506 ((string-match "\\.\\(el\\|cl\\|lisp\\)\\'" | |
| 507 filename) | |
| 508 'lisp-mode) | |
| 509 ((string-match "\\.scm\\'" filename) | |
| 510 'scheme-mode) | |
| 511 (t nil))) | |
| 512 (cond ((and (eq file-type 'c-mode) | |
| 513 c-mode-syntax-table) | |
| 514 (set-syntax-table c-mode-syntax-table)) | |
| 515 ((eq file-type 'lisp-mode) | |
| 516 (set-syntax-table lisp-mode-syntax-table)) | |
| 517 (t | |
| 518 (set-syntax-table (standard-syntax-table)))) | |
| 519 ;; clear loop variables | |
| 520 (setq name nil name2 nil) | |
| 521 (message "%s..." filename) | |
| 522 ;; loop over the individual tag lines | |
| 523 (while (not (or (eobp) (eq (following-char) ?\f))) | |
| 524 (cond ((and (eq file-type 'c-mode) | |
| 525 (looking-at "DEFUN[ \t]")) | |
| 526 (or (looking-at tags-DEFUN-pattern) | |
| 527 (error "DEFUN doesn't fit pattern")) | |
| 528 (setq name (buffer-substring (match-beginning 1) | |
| 529 (match-end 1)) | |
| 530 name2 (buffer-substring (match-beginning 2) | |
| 531 (match-end 2)))) | |
| 532 ;;; ((looking-at "\\s ") | |
| 533 ;;; ;; skip probably bogus entry: | |
| 534 ;;; ) | |
| 535 ((and (eq file-type 'c-mode) | |
| 536 (looking-at ".*\\[")) | |
| 537 (cond ((not (looking-at tags-array-pattern)) | |
| 538 (message "array definition doesn't fit pattern") | |
| 539 (setq name nil)) | |
| 540 (t | |
| 541 (setq name (buffer-substring (match-beginning 1) | |
| 542 (match-end 1)))))) | |
| 543 ((and (eq file-type 'scheme-mode) | |
| 544 (looking-at "\\s-*(\\s-*def\\sw*\\s-*(?\\s-*\\(\\(\\sw\\|\\s_\\|:\\)+\\))?\\s-*\C-?")) | |
| 545 (setq name (buffer-substring (match-beginning 1) | |
| 546 (match-end 1)))) | |
| 547 ((looking-at tags-def-pattern) | |
| 548 (setq name (buffer-substring (match-beginning 2) | |
| 549 (match-end 2))))) | |
| 550 ;; add the tags we found to the completion table | |
| 551 (and name (intern-tag-symbol name)) | |
| 552 (and name2 (intern-tag-symbol name2)) | |
| 553 (forward-line 1))) | |
| 554 (or (eobp) (error "Bad TAGS file"))) | |
| 555 (message "Adding %s to tags completion table...done" | |
| 556 buffer-file-name)) | |
| 557 | |
| 558 | |
| 559 ;; Interactive find-tag | |
| 560 | |
| 561 (defvar find-tag-default-hook nil | |
| 562 "Function to call to create a default tag. | |
| 563 Make it buffer-local in a mode hook. The function is called with no | |
| 564 arguments.") | |
| 565 | |
| 566 (defvar find-tag-hook nil | |
| 567 "Function to call after a hook is found. | |
| 568 Make it buffer-local in a mode hook. The function is called with no | |
| 569 argsuments.") | |
| 570 | |
| 571 ;; Return a default tag to search for, based on the text at point. | |
| 572 (defun find-tag-default () | |
| 573 (or (and (not (memq find-tag-default-hook '(nil find-tag-default))) | |
| 574 (condition-case data | |
| 575 (funcall find-tag-default-hook) | |
| 576 (error | |
| 577 (warn "Error in find-tag-default-hook signalled error: %s" | |
| 578 (error-message-string data)) | |
| 579 nil))) | |
| 580 (let ((pair (thing-symbol (point)))) | |
| 581 (and pair | |
| 582 (buffer-substring (car pair) (cdr pair)))))) | |
| 583 | |
| 584 ;; This function depends on the following symbols being bound properly: | |
| 585 ;; buffer-tag-table-list, | |
| 586 ;; tag-symbol-tables (value irrelevant, bound outside for efficiency) | |
| 587 (defun tag-completion-predicate (tag-symbol) | |
| 588 (and (boundp tag-symbol) | |
| 589 (setq tag-symbol-tables (symbol-value tag-symbol)) | |
| 590 (catch 'found | |
| 591 (while tag-symbol-tables | |
| 592 (when (memq (car tag-symbol-tables) buffer-tag-table-list) | |
| 593 (throw 'found t)) | |
| 594 (setq tag-symbol-tables (cdr tag-symbol-tables)))))) | |
| 595 | |
| 596 (defun buffer-tag-table-symbol-list () | |
| 597 (mapcar (lambda (table-name) | |
| 598 (intern table-name tag-completion-table)) | |
| 599 (buffer-tag-table-list))) | |
| 600 | |
| 601 (defvar find-tag-history nil "History list for find-tag-tag") | |
| 602 | |
| 603 (defun find-tag-tag (prompt) | |
| 604 (let* ((default (find-tag-default)) | |
| 605 (buffer-tag-table-list (buffer-tag-table-symbol-list)) | |
| 606 tag-symbol-tables tag-name) | |
| 607 (setq tag-name | |
| 608 (completing-read | |
| 609 (if default | |
| 610 (format "%s(default %s) " prompt default) | |
| 611 prompt) | |
| 612 tag-completion-table 'tag-completion-predicate nil nil | |
| 613 'find-tag-history)) | |
| 614 (if (string-equal tag-name "") | |
| 615 ;; #### - This is a really LAME way of doing it! --Stig | |
| 616 default ;indicate exact symbol match | |
| 617 tag-name))) | |
| 618 | |
| 619 (defvar last-tag-data nil | |
| 620 "Information for continuing a tag search. | |
| 621 Is of the form (TAG POINT MATCHING-EXACT TAG-TABLE TAG-TABLE ...).") | |
| 622 | |
| 623 (defvar tags-loop-operate nil | |
| 624 "Form for `tags-loop-continue' to eval to change one file.") | |
| 625 | |
| 626 (defvar tags-loop-scan | |
| 627 '(error "%s" (substitute-command-keys | |
| 628 "No \\[tags-search] or \\[tags-query-replace] in progress.")) | |
| 629 "Form for `tags-loop-continue' to eval to scan one file. | |
| 630 If it returns non-nil, this file needs processing by evalling | |
| 631 \`tags-loop-operate'. Otherwise, move on to the next file.") | |
| 632 | |
| 633 (autoload 'get-symbol-syntax-table "symbol-syntax") | |
| 634 | |
| 635 (defun find-tag-internal (tagname) | |
| 636 (let ((next (null tagname)) | |
| 637 (tmpnext (null tagname)) | |
| 638 ;; If tagname is a list: (TAGNAME), this indicates | |
| 639 ;; requiring an exact symbol match. | |
| 640 (exact (or tags-always-exact (consp tagname))) | |
| 641 (normal-syntax-table (syntax-table)) | |
| 642 (exact-syntax-table (get-symbol-syntax-table (syntax-table))) | |
| 643 tag-table-currently-matching-exact | |
| 644 tag-target exact-tagname | |
| 645 tag-tables tag-table-point file linebeg startpos buf | |
| 646 offset found pat syn-tab) | |
| 647 (if (consp tagname) (setq tagname (car tagname))) | |
| 648 (cond (next | |
| 649 (setq tagname (car last-tag-data)) | |
| 650 (setq tag-table-currently-matching-exact | |
| 651 (car (cdr (cdr last-tag-data))))) | |
| 652 (t | |
| 653 (setq tag-table-currently-matching-exact t))) | |
| 654 ;; \_ in the tagname is used to indicate a symbol boundary. | |
| 655 (setq exact-tagname (concat "\\_" tagname "\\_")) | |
| 656 (while (string-match "\\\\_" exact-tagname) | |
| 657 (aset exact-tagname (1- (match-end 0)) ?b)) | |
| 658 (save-excursion | |
| 659 (catch 'found | |
| 660 ;; loop searching for exact matches and then inexact matches. | |
| 661 (while (not (eq tag-table-currently-matching-exact 'neither)) | |
| 662 (cond (tmpnext | |
| 663 (setq tag-tables (cdr (cdr (cdr last-tag-data)))) | |
| 664 (setq tag-table-point (car (cdr last-tag-data))) | |
| 665 ;; start from the beginning of the table list | |
| 666 ;; on the next iteration of the loop. | |
| 667 (setq tmpnext nil)) | |
| 668 (t | |
| 669 (setq tag-tables (buffer-tag-table-list)) | |
| 670 (setq tag-table-point 1))) | |
| 671 (if tag-table-currently-matching-exact | |
| 672 (progn | |
| 673 (setq tag-target exact-tagname) | |
| 674 (setq syn-tab exact-syntax-table)) | |
| 675 (setq tag-target tagname) | |
| 676 (setq syn-tab normal-syntax-table)) | |
| 677 (with-caps-disable-folding tag-target | |
| 678 (while tag-tables | |
| 679 (set-buffer (get-tag-table-buffer (car tag-tables))) | |
| 680 (bury-buffer (current-buffer)) | |
| 681 (goto-char (or tag-table-point (point-min))) | |
| 682 (setq tag-table-point nil) | |
| 683 (let ((osyn (syntax-table)) | |
| 684 case-fold-search) | |
| 685 (unwind-protect | |
| 686 (progn | |
| 687 (set-syntax-table syn-tab) | |
| 688 ;; **** should there be support for non-regexp | |
| 689 ;; tag searches? | |
| 690 (while (re-search-forward tag-target nil t) | |
| 691 (if (and (save-match-data | |
| 692 (looking-at "[^\n\C-?]*\C-?")) | |
| 693 ;; if we're looking for inexact | |
| 694 ;; matches, skip exact matches | |
| 695 ;; since we've visited them | |
| 696 ;; already. | |
| 697 (or tag-table-currently-matching-exact | |
| 698 (unwind-protect | |
| 699 (save-excursion | |
| 700 (set-syntax-table | |
| 701 exact-syntax-table) | |
| 702 (goto-char (match-beginning 0)) | |
| 703 (not (looking-at exact-tagname))) | |
| 704 (set-syntax-table syn-tab)))) | |
| 705 (throw 'found t)))) | |
| 706 (set-syntax-table osyn))) | |
| 707 (setq tag-tables | |
| 708 (nconc (tag-table-include-files) (cdr tag-tables))))) | |
| 709 (if (and (not exact) (eq tag-table-currently-matching-exact t)) | |
| 710 (setq tag-table-currently-matching-exact nil) | |
| 711 (setq tag-table-currently-matching-exact 'neither))) | |
| 712 (error "No %sentries %s %s" | |
| 713 (if next "more " "") | |
| 714 (if exact "matching" "containing") | |
| 715 tagname)) | |
| 716 (search-forward "\C-?") | |
| 717 (setq file (expand-file-name (file-of-tag) | |
| 718 ;; XEmacs change: this needs to be | |
| 719 ;; relative to the | |
| 720 (or (file-name-directory (car tag-tables)) | |
| 721 "./"))) | |
| 722 (setq linebeg (buffer-substring (1- (point)) (point-at-bol))) | |
| 723 (search-forward ",") | |
| 724 (setq startpos (read (current-buffer))) | |
| 725 (setq last-tag-data | |
| 726 (nconc (list tagname (point) tag-table-currently-matching-exact) | |
| 727 tag-tables)) | |
| 728 (setq buf (find-file-noselect file)) | |
| 729 (with-current-buffer buf | |
| 730 (save-excursion | |
| 731 (save-restriction | |
| 732 (widen) | |
| 733 (setq offset 1000) | |
| 734 (setq pat (concat "^" (regexp-quote linebeg))) | |
| 735 (or startpos (setq startpos (point-min))) | |
| 736 (while (and (not found) | |
| 737 (progn | |
| 738 (goto-char (- startpos offset)) | |
| 739 (not (bobp)))) | |
| 740 (setq found (re-search-forward pat (+ startpos offset) t)) | |
| 741 (setq offset (* 3 offset))) | |
| 742 (or found | |
| 743 (re-search-forward pat nil t) | |
| 744 (error "%s not found in %s" pat file)) | |
| 745 (beginning-of-line) | |
| 746 (setq startpos (point))))) | |
| 747 (cons buf startpos)))) | |
| 748 | |
| 749 ;;;###autoload | |
| 750 (defun find-tag (tagname &optional other-window) | |
| 751 "*Find tag whose name contains TAGNAME. | |
| 752 Selects the buffer that the tag is contained in | |
| 753 and puts point at its definition. | |
| 754 If TAGNAME is a null string, the expression in the buffer | |
| 755 around or before point is used as the tag name. | |
| 756 If called interactively with a numeric argument, searches for the next tag | |
| 757 in the tag table that matches the tagname used in the previous find-tag. | |
| 758 If second arg OTHER-WINDOW is non-nil, uses another window to display | |
| 759 the tag. | |
| 760 | |
| 761 This version of this function supports multiple active tags tables, | |
| 762 and completion. | |
| 763 | |
| 764 Variables of note: | |
| 765 | |
| 766 tag-table-alist controls which tables apply to which buffers | |
| 767 tags-file-name a default tags table | |
| 768 tags-build-completion-table controls completion behavior | |
| 769 buffer-tag-table another way of specifying a buffer-local table | |
| 770 make-tags-files-invisible whether tags tables should be very hidden | |
| 771 tag-mark-stack-max how many tags-based hops to remember" | |
| 772 (interactive (if current-prefix-arg | |
| 773 '(nil nil) | |
| 774 (list (find-tag-tag "Find tag: ") nil))) | |
| 775 (let* ((local-find-tag-hook find-tag-hook) | |
| 776 (next (null tagname)) | |
| 777 (result (find-tag-internal tagname)) | |
| 778 (tag-buf (car result)) | |
| 779 (tag-point (cdr result))) | |
| 780 ;; push old position | |
| 781 (if (or (not next) | |
| 782 (not (memq last-command | |
| 783 '(find-tag find-tag-other-window tags-loop-continue)))) | |
| 784 (push-tag-mark)) | |
| 785 (if other-window | |
| 786 (pop-to-buffer tag-buf) | |
| 787 (switch-to-buffer tag-buf)) | |
| 788 (widen) | |
| 789 (push-mark) | |
| 790 (goto-char tag-point) | |
| 791 (if find-tag-hook | |
| 792 (funcall find-tag-hook) | |
| 793 (if local-find-tag-hook | |
| 794 (funcall local-find-tag-hook)))) | |
| 795 (setq tags-loop-scan (list 'find-tag nil nil) | |
| 796 tags-loop-operate nil) | |
| 797 ;; Return t in case used as the tags-loop-scan. | |
| 798 t) | |
| 799 | |
| 800 ;; This function is unchanged from lisp/tags.el: | |
| 801 ;;;###autoload | |
| 802 (defun find-tag-other-window (tagname &optional next) | |
| 803 "*Find tag whose name contains TAGNAME. | |
| 804 Selects the buffer that the tag is contained in in another window | |
| 805 and puts point at its definition. | |
| 806 If TAGNAME is a null string, the expression in the buffer | |
| 807 around or before point is used as the tag name. | |
| 808 If second arg NEXT is non-nil (interactively, with prefix arg), | |
| 809 searches for the next tag in the tag table | |
| 810 that matches the tagname used in the previous find-tag. | |
| 811 | |
| 812 This version of this function supports multiple active tags tables, | |
| 813 and completion. | |
| 814 | |
| 815 Variables of note: | |
| 816 | |
| 817 tag-table-alist controls which tables apply to which buffers | |
| 818 tags-file-name a default tags table | |
| 819 tags-build-completion-table controls completion behavior | |
| 820 buffer-tag-table another way of specifying a buffer-local table | |
| 821 make-tags-files-invisible whether tags tables should be very hidden | |
| 822 tag-mark-stack-max how many tags-based hops to remember" | |
| 823 (interactive (if current-prefix-arg | |
| 824 '(nil t) | |
| 825 (list (find-tag-tag "Find tag other window: ")))) | |
| 826 (if next | |
| 827 (find-tag nil t) | |
| 828 (find-tag tagname t))) | |
| 829 | |
| 830 | |
| 831 ;; Completion on tags in the buffer | |
| 832 | |
| 833 (defun complete-symbol (&optional table predicate prettify) | |
| 834 (let* ((end (point)) | |
| 835 (beg (save-excursion | |
| 836 (backward-sexp 1) | |
| 837 (while (= (char-syntax (following-char)) ?\') | |
| 838 (forward-char 1)) | |
| 839 (point))) | |
| 840 (pattern (buffer-substring beg end)) | |
| 841 (table (or table obarray)) | |
| 842 (completion (try-completion pattern table predicate))) | |
| 843 (cond ((eq completion t)) | |
| 844 ((null completion) | |
| 845 (message "Can't find completion for \"%s\"" pattern) | |
| 846 (ding)) | |
| 847 ((not (string-equal pattern completion)) | |
| 848 (delete-region beg end) | |
| 849 (insert completion)) | |
| 850 (t | |
| 851 (message "Making completion list...") | |
| 852 (let ((list (all-completions pattern table predicate))) | |
| 853 (if prettify | |
| 854 (setq list (funcall prettify list))) | |
| 855 (with-output-to-temp-buffer "*Help*" | |
| 856 (display-completion-list list))) | |
| 857 (message "Making completion list...%s" "done"))))) | |
| 858 | |
| 859 (defun tag-complete-symbol () | |
| 860 "The function used to do tags-completion (using 'tag-completion-predicate)." | |
| 861 (interactive) | |
| 862 (let* ((buffer-tag-table-list (buffer-tag-table-symbol-list)) | |
| 863 tag-symbol-tables) | |
| 864 (complete-symbol tag-completion-table 'tag-completion-predicate))) | |
| 865 | |
| 866 | |
| 867 ;; Applying a command to files mentioned in tag tables | |
| 868 | |
| 869 (defvar next-file-list nil | |
| 870 "List of files for next-file to process.") | |
| 871 | |
| 872 ;;;###autoload | |
| 873 (defun next-file (&optional initialize novisit) | |
| 874 "Select next file among files in current tag table(s). | |
| 875 | |
| 876 A first argument of t (prefix arg, if interactive) initializes to the | |
| 877 beginning of the list of files in the (first) tags table. If the argument | |
| 878 is neither nil nor t, it is evalled to initialize the list of files. | |
| 879 | |
| 880 Non-nil second argument NOVISIT means use a temporary buffer | |
| 881 to save time and avoid uninteresting warnings. | |
| 882 | |
| 883 Value is nil if the file was already visited; | |
| 884 if the file was newly read in, the value is the filename." | |
| 885 (interactive "P") | |
| 886 (cond ((not initialize) | |
| 887 ;; Not the first run. | |
| 888 ) | |
| 889 ((eq initialize t) | |
| 890 ;; Initialize the list from the tags table. | |
| 891 (setq next-file-list (buffer-tag-table-files))) | |
| 892 (t | |
| 893 ;; Initialize the list by evalling the argument. | |
| 894 (setq next-file-list (eval initialize)))) | |
| 895 (if (null next-file-list) | |
| 896 (progn | |
| 897 (and novisit | |
| 898 (get-buffer " *next-file*") | |
| 899 (kill-buffer " *next-file*")) | |
| 900 (error "All files processed."))) | |
| 901 (let* ((file (car next-file-list)) | |
| 902 (buf (get-file-buffer file)) | |
| 903 (new (not buf))) | |
| 904 (setq next-file-list (cdr next-file-list)) | |
| 905 | |
| 906 (if (not (and new novisit)) | |
| 907 (switch-to-buffer (find-file-noselect file novisit) t) | |
| 908 ;; Like find-file, but avoids random warning messages. | |
| 909 (set-buffer (get-buffer-create " *next-file*")) | |
| 910 (kill-all-local-variables) | |
| 911 (erase-buffer) | |
| 912 (insert-file-contents file nil)) | |
| 913 (widen) | |
| 914 (cond ((> (point) (point-min)) | |
| 915 (push-mark nil t) | |
| 916 (goto-char (point-min)))) | |
| 917 (and new file))) | |
| 918 | |
| 919 (defcustom tags-search-nuke-uninteresting-buffers t | |
| 920 "*If t (the default), tags-search and tags-query-replace will only | |
| 921 keep newly-visited buffers if they contain the search target." | |
| 922 :type 'boolean | |
| 923 :group 'etags) | |
| 924 | |
| 925 ;;;###autoload | |
| 926 (defun tags-loop-continue (&optional first-time) | |
| 927 "Continue last \\[tags-search] or \\[tags-query-replace] command. | |
| 928 Used noninteractively with non-nil argument to begin such a command (the | |
| 929 argument is passed to `next-file', which see). | |
| 930 Two variables control the processing we do on each file: | |
| 931 the value of `tags-loop-scan' is a form to be executed on each file | |
| 932 to see if it is interesting (it returns non-nil if so) | |
| 933 and `tags-loop-operate' is a form to execute to operate on an interesting file | |
| 934 If the latter returns non-nil, we exit; otherwise we scan the next file." | |
| 935 (interactive) | |
| 936 (let (new | |
| 937 (messaged nil)) | |
| 938 (while | |
| 939 (progn | |
| 940 ;; Scan files quickly for the first or next interesting one. | |
| 941 (while (or first-time | |
| 942 (save-restriction | |
| 943 (widen) | |
| 944 (not (eval tags-loop-scan)))) | |
| 945 (setq new (next-file first-time | |
| 946 tags-search-nuke-uninteresting-buffers)) | |
| 947 ;; If NEW is non-nil, we got a temp buffer, | |
| 948 ;; and NEW is the file name. | |
| 949 (if (or messaged | |
| 950 (and (not first-time) | |
| 951 (> (device-baud-rate) search-slow-speed) | |
| 952 (setq messaged t))) | |
| 953 (message "Scanning file %s..." (or new buffer-file-name))) | |
| 954 (setq first-time nil) | |
| 955 (goto-char (point-min))) | |
| 956 | |
| 957 ;; If we visited it in a temp buffer, visit it now for real. | |
| 958 (if (and new tags-search-nuke-uninteresting-buffers) | |
| 959 (let ((pos (point))) | |
| 960 (erase-buffer) | |
| 961 (set-buffer (find-file-noselect new)) | |
| 962 (widen) | |
| 963 (goto-char pos))) | |
| 964 | |
| 965 (switch-to-buffer (current-buffer)) | |
| 966 | |
| 967 ;; Now operate on the file. | |
| 968 ;; If value is non-nil, continue to scan the next file. | |
| 969 (eval tags-loop-operate))) | |
| 970 (and messaged | |
| 971 (null tags-loop-operate) | |
| 972 (message "Scanning file %s...found" buffer-file-name)))) | |
| 973 | |
| 974 | |
| 975 ;;;###autoload | |
| 976 (defun tags-search (regexp &optional file-list-form) | |
| 977 "Search through all files listed in tags table for match for REGEXP. | |
| 978 Stops when a match is found. | |
| 979 To continue searching for next match, use command \\[tags-loop-continue]. | |
| 980 | |
| 981 See documentation of variable `tag-table-alist'." | |
| 982 (interactive "sTags search (regexp): ") | |
| 983 (if (and (equal regexp "") | |
| 984 (eq (car tags-loop-scan) 'with-caps-disable-folding) | |
| 985 (null tags-loop-operate)) | |
| 986 ;; Continue last tags-search as if by M-,. | |
| 987 (tags-loop-continue nil) | |
| 988 (setq tags-loop-scan `(with-caps-disable-folding ,regexp | |
| 989 (re-search-forward ,regexp nil t)) | |
| 990 tags-loop-operate nil) | |
| 991 (tags-loop-continue (or file-list-form t)))) | |
| 992 | |
| 993 ;;;###autoload | |
| 994 (defun tags-query-replace (from to &optional delimited file-list-form) | |
| 995 "Query-replace-regexp FROM with TO through all files listed in tags table. | |
| 996 Third arg DELIMITED (prefix arg) means replace only word-delimited matches. | |
| 997 If you exit (\\[keyboard-quit] or ESC), you can resume the query-replace | |
| 998 with the command \\[tags-loop-continue]. | |
| 999 | |
| 1000 See documentation of variable `tag-table-alist'." | |
| 1001 (interactive | |
| 1002 "sTags query replace (regexp): \nsTags query replace %s by: \nP") | |
| 1003 (setq tags-loop-scan `(with-caps-disable-folding ,from | |
| 1004 (if (re-search-forward ,from nil t) | |
| 1005 ;; When we find a match, move back | |
| 1006 ;; to the beginning of it so perform-replace | |
| 1007 ;; will see it. | |
| 1008 (progn (goto-char (match-beginning 0)) t))) | |
| 1009 tags-loop-operate (list 'perform-replace from to t t | |
| 1010 (not (null delimited)))) | |
| 1011 (tags-loop-continue (or file-list-form t))) | |
| 1012 | |
| 1013 ;; Miscellaneous | |
| 1014 | |
| 1015 ;; **** need to alter | |
| 1016 ;; This function is unchanged from lisp/tags.el: | |
| 1017 ;;;###autoload | |
| 1018 (defun list-tags (string) | |
| 1019 "Display list of tags in file FILE. | |
| 1020 FILE should not contain a directory spec | |
| 1021 unless it has one in the tag table." | |
| 1022 (interactive "fList tags (in file): ") | |
| 1023 (setq string (expand-file-name string)) | |
| 1024 (with-output-to-temp-buffer "*Tags List*" | |
| 1025 (princ "Tags in file ") | |
| 1026 (princ string) | |
| 1027 (terpri) | |
| 1028 (save-excursion | |
| 1029 (visit-tags-table-buffer) | |
| 1030 (goto-char 1) | |
| 1031 (search-forward (concat "\f\n" string ",")) | |
| 1032 (forward-line 1) | |
| 1033 (while (not (or (eobp) (looking-at "\f"))) | |
| 1034 (princ (buffer-substring (point) | |
| 1035 (progn (skip-chars-forward "^\C-?") | |
| 1036 (point)))) | |
| 1037 (terpri) | |
| 1038 (forward-line 1))))) | |
| 1039 | |
| 1040 ;; **** need to alter | |
| 1041 ;; This function is unchanged from lisp/tags.el: | |
| 1042 ;;;###autoload | |
| 1043 (defun tags-apropos (string) | |
| 1044 "Display list of all tags in tag table REGEXP matches." | |
| 1045 (interactive "sTag apropos (regexp): ") | |
| 1046 (with-output-to-temp-buffer "*Tags List*" | |
| 1047 (princ "Tags matching regexp ") | |
| 1048 (prin1 string) | |
| 1049 (terpri) | |
| 1050 (save-excursion | |
| 1051 (visit-tags-table-buffer) | |
| 1052 (goto-char 1) | |
| 1053 (while (re-search-forward string nil t) | |
| 1054 (beginning-of-line) | |
| 1055 (princ (buffer-substring (point) | |
| 1056 (progn (skip-chars-forward "^\C-?") | |
| 1057 (point)))) | |
| 1058 (terpri) | |
| 1059 (forward-line 1))))) | |
| 1060 | |
| 1061 ;; **** copied from tags.el | |
| 1062 (defun visit-tags-table-buffer () | |
| 1063 "Select the buffer containing the current tag table. | |
| 1064 This is a file whose name is in the variable tags-file-name." | |
| 1065 (or tags-file-name | |
| 1066 (call-interactively 'visit-tags-table)) | |
| 1067 (set-buffer (or (get-file-buffer tags-file-name) | |
| 1068 (progn | |
| 1069 (setq tag-table-files nil) | |
| 1070 (find-file-noselect tags-file-name)))) | |
| 1071 (or (verify-visited-file-modtime (get-file-buffer tags-file-name)) | |
| 1072 (cond ((yes-or-no-p "Tags file has changed, read new contents? ") | |
| 1073 (revert-buffer t t) | |
| 1074 (setq tag-table-files nil)))) | |
| 1075 (or (eq (char-after 1) ?\^L) | |
| 1076 (error "File %s not a valid tag table" tags-file-name))) | |
| 1077 | |
| 1078 | |
| 1079 ;; Sample uses of find-tag-hook and find-tag-default-hook | |
| 1080 | |
| 1081 ;; Example buffer-local tag finding | |
| 1082 | |
| 1083 (or (boundp 'emacs-lisp-mode-hook) | |
| 1084 (setq emacs-lisp-mode-hook nil)) | |
| 1085 (if (eq (car-safe emacs-lisp-mode-hook) 'lambda) | |
| 1086 (setq emacs-lisp-mode-hook (list emacs-lisp-mode-hook))) | |
| 1087 (or (memq 'setup-emacs-lisp-default-tag-hook emacs-lisp-mode-hook) | |
| 1088 (setq emacs-lisp-mode-hook | |
| 1089 (cons 'setup-emacs-lisp-default-tag-hook emacs-lisp-mode-hook))) | |
| 1090 | |
| 1091 (defun setup-emacs-lisp-default-tag-hook () | |
| 1092 (cond ((eq major-mode 'emacs-lisp-mode) | |
| 1093 (make-variable-buffer-local 'find-tag-default-hook) | |
| 1094 (setq find-tag-default-hook 'emacs-lisp-default-tag)))) | |
| 1095 ;; Run it once immediately | |
| 1096 (setup-emacs-lisp-default-tag-hook) | |
| 1097 (when (get-buffer "*scratch*") | |
| 1098 (with-current-buffer "*scratch*" | |
| 1099 (setup-emacs-lisp-default-tag-hook))) | |
| 1100 | |
| 1101 (defun emacs-lisp-default-tag () | |
| 1102 "Function to return a default tag for Emacs-Lisp mode." | |
| 1103 (let ((tag (or (variable-at-point) | |
| 1104 (function-at-point)))) | |
| 1105 (if tag (symbol-name tag)))) | |
| 1106 | |
| 1107 | |
| 1108 ;; Display short info on tag in minibuffer | |
| 1109 | |
| 1110 (if (null (lookup-key esc-map "?")) | |
| 1111 (define-key esc-map "?" 'display-tag-info)) | |
| 1112 | |
| 1113 (defun display-tag-info (tagname) | |
| 1114 "Prints a description of the first tag matching TAGNAME in the echo area. | |
| 1115 If this is an elisp function, prints something like \"(defun foo (x y z)\". | |
| 1116 That is, is prints the first line of the definition of the form. | |
| 1117 If this is a C-defined elisp function, it does something more clever." | |
| 1118 (interactive (if current-prefix-arg | |
| 1119 '(nil) | |
| 1120 (list (find-tag-tag "Display tag info: ")))) | |
| 1121 (let* ((results (find-tag-internal tagname)) | |
| 1122 (tag-buf (car results)) | |
| 1123 (tag-point (cdr results)) | |
| 1124 info lname min max fname args) | |
| 1125 (with-current-buffer tag-buf | |
| 1126 (save-excursion | |
| 1127 (save-restriction | |
| 1128 (widen) | |
| 1129 (goto-char tag-point) | |
| 1130 (cond ((let ((case-fold-search nil)) | |
| 1131 (looking-at "^DEFUN[ \t]")) | |
| 1132 (forward-sexp 1) | |
| 1133 (down-list 1) | |
| 1134 (setq lname (read (current-buffer)) | |
| 1135 fname (buffer-substring | |
| 1136 (progn (forward-sexp 1) (point)) | |
| 1137 (progn (backward-sexp 1) (point))) | |
| 1138 min (buffer-substring | |
| 1139 (progn (forward-sexp 3) (point)) | |
| 1140 (progn (backward-sexp 1) (point))) | |
| 1141 max (buffer-substring | |
| 1142 (progn (forward-sexp 2) (point)) | |
| 1143 (progn (backward-sexp 1) (point)))) | |
| 1144 (backward-up-list 1) | |
| 1145 (setq args (buffer-substring | |
| 1146 (progn (forward-sexp 2) (point)) | |
| 1147 (progn (backward-sexp 1) (point)))) | |
| 1148 (setq info (format "Elisp: %s, C: %s %s, #args: %s" | |
| 1149 lname | |
| 1150 fname args | |
| 1151 (if (string-equal min max) | |
| 1152 min | |
| 1153 (format "from %s to %s" min max))))) | |
| 1154 (t | |
| 1155 (setq info | |
| 1156 (buffer-substring | |
| 1157 (progn (beginning-of-line) (point)) | |
| 1158 (progn (end-of-line) (point))))))))) | |
| 1159 (message "%s" info)) | |
| 1160 (setq tags-loop-scan '(display-tag-info nil) | |
| 1161 tags-loop-operate nil) | |
| 1162 ;; Always return non-nil | |
| 1163 t) | |
| 1164 | |
| 1165 | |
| 1166 ;; Keep track of old locations before finding tags | |
| 1167 | |
| 1168 (defvar tag-mark-stack1 nil) | |
| 1169 (defvar tag-mark-stack2 nil) | |
| 1170 (defcustom tag-mark-stack-max 16 | |
| 1171 "*The maximum number of elements kept on the mark-stack used | |
| 1172 by tags-search. See also the commands push-tag-mark (\\[push-tag-mark]) | |
| 1173 and pop-tag-mark. (\\[pop-tag-mark])." | |
| 1174 :type 'integer | |
| 1175 :group 'etags) | |
| 1176 | |
| 1177 (defun push-mark-on-stack (stack-symbol &optional max-size) | |
| 1178 (let ((stack (symbol-value stack-symbol))) | |
| 1179 (push (point-marker) stack) | |
| 1180 (cond ((and max-size | |
| 1181 (> (length stack) max-size)) | |
| 1182 (set-marker (car (nthcdr max-size stack)) nil) | |
| 1183 (setcdr (nthcdr (1- max-size) stack) nil))) | |
| 1184 (set stack-symbol stack))) | |
| 1185 | |
| 1186 (defun pop-mark-from-stack (stack-symbol1 stack-symbol2 &optional max-size) | |
| 1187 (let* ((stack (or (symbol-value stack-symbol1) | |
| 1188 (error "No more tag marks on stack"))) | |
| 1189 (marker (car stack)) | |
| 1190 (m-buf (marker-buffer marker))) | |
| 1191 (set stack-symbol1 (cdr stack)) | |
| 1192 (or m-buf | |
| 1193 (error "Marker has no buffer")) | |
| 1194 (if (null (buffer-name m-buf)) | |
| 1195 (error "Buffer has been killed")) | |
| 1196 (push-mark-on-stack stack-symbol2 max-size) | |
| 1197 (switch-to-buffer m-buf) | |
| 1198 (widen) | |
| 1199 (goto-char (marker-position marker)))) | |
| 1200 | |
| 1201 (defun push-tag-mark () | |
| 1202 (push-mark-on-stack 'tag-mark-stack1 tag-mark-stack-max)) | |
| 1203 | |
| 1204 (if (memq (lookup-key esc-map "*") '(nil undefined)) | |
| 1205 (define-key esc-map "*" 'pop-tag-mark)) | |
| 1206 | |
| 1207 (defun pop-tag-mark (arg) | |
| 1208 "find-tag maintains a mark-stack seperate from the \\[set-mark-command] mark-stack. | |
| 1209 This function pops (and moves to) the tag at the top of this stack." | |
| 1210 (interactive "P") | |
| 1211 (if (not arg) | |
| 1212 (pop-mark-from-stack | |
| 1213 'tag-mark-stack1 'tag-mark-stack2 tag-mark-stack-max) | |
| 1214 (pop-mark-from-stack | |
| 1215 'tag-mark-stack2 'tag-mark-stack1 tag-mark-stack-max))) | |
| 1216 | |
| 1217 | |
| 1218 (provide 'etags) | |
| 1219 (provide 'tags) |