add-log.el 20.1 KB
Newer Older
Eric S. Raymond's avatar
Eric S. Raymond committed
1 2
;;; add-log.el --- change log maintenance commands for Emacs

3
;; Copyright (C) 1985, 1986, 1988, 1993, 1994 Free Software Foundation, Inc.
Eric S. Raymond's avatar
Eric S. Raymond committed
4

Eric S. Raymond's avatar
Eric S. Raymond committed
5 6
;; Keywords: maint

Eric S. Raymond's avatar
Eric S. Raymond committed
7 8 9 10
;; This file is part of GNU Emacs.

;; GNU Emacs is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
Eric S. Raymond's avatar
Eric S. Raymond committed
11
;; the Free Software Foundation; either version 2, or (at your option)
Eric S. Raymond's avatar
Eric S. Raymond committed
12 13 14 15 16 17 18 19
;; any later version.

;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
Erik Naggum's avatar
Erik Naggum committed
20 21 22
;; along with GNU Emacs; see the file COPYING.  If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
Eric S. Raymond's avatar
Eric S. Raymond committed
23

24 25 26 27
;;; Commentary:

;; This facility is documented in the Emacs Manual.

Eric S. Raymond's avatar
Eric S. Raymond committed
28
;;; Code:
Eric S. Raymond's avatar
Eric S. Raymond committed
29 30 31 32

(defvar change-log-default-name nil
  "*Name of a change log file for \\[add-change-log-entry].")

33 34 35 36 37 38
(defvar add-log-current-defun-function nil
  "\
*If non-nil, function to guess name of current function from surrounding text.
\\[add-change-log-entry] calls this function (if nil, `add-log-current-defun'
instead) with no arguments.  It returns a string or nil if it cannot guess.")

39
;;;###autoload
40
(defvar add-log-full-name nil
41 42 43
  "*Full name of user, for inclusion in ChangeLog daily headers.
This defaults to the value returned by the `user-full-name' function.")

44
;;;###autoload
45
(defvar add-log-mailing-address nil
46
  "*Electronic mail address of user, for inclusion in ChangeLog daily headers.
47
This defaults to the value of `user-mail-address'.")
48

49
(defvar change-log-font-lock-keywords
50
  '(("^[SMTWF].+" . font-lock-function-name-face)	; Date line.
51
    ("^\t\\* \\([^ :\n]+\\)" 1 font-lock-comment-face)	; File name.
52
    ("(\\([^)\n]+\\)):" 1 font-lock-keyword-face))	; Function name.
53 54
  "Additional expressions to highlight in Change Log mode.")

Eric S. Raymond's avatar
Eric S. Raymond committed
55 56
(defun change-log-name ()
  (or change-log-default-name
57 58
      (if (eq system-type 'vax-vms) 
	  "$CHANGE_LOG$.TXT" 
59
	(if (or (eq system-type 'ms-dos) (eq system-type 'windows-nt))
60
	    "changelo"
61
	  "ChangeLog"))))
Eric S. Raymond's avatar
Eric S. Raymond committed
62

63
;;;###autoload
Eric S. Raymond's avatar
Eric S. Raymond committed
64 65
(defun prompt-for-change-log-name ()
  "Prompt for a change log name."
66 67 68 69 70 71 72 73 74 75 76 77 78 79
  (let* ((default (change-log-name))
	 (name (expand-file-name
		(read-file-name (format "Log file (default %s): " default)
				nil default))))
    ;; Handle something that is syntactically a directory name.
    ;; Look for ChangeLog or whatever in that directory.
    (if (string= (file-name-nondirectory name) "")
	(expand-file-name (file-name-nondirectory default)
			  name)
      ;; Handle specifying a file that is a directory.
      (if (file-directory-p name)
	  (expand-file-name (file-name-nondirectory default)
			    (file-name-as-directory name))
	name))))
Eric S. Raymond's avatar
Eric S. Raymond committed
80

81 82 83
;;;###autoload
(defun find-change-log (&optional file-name)
  "Find a change log file for \\[add-change-log-entry] and return the name.
84 85

Optional arg FILE-NAME specifies the file to use.
86 87 88 89 90 91 92
If FILE-NAME is nil, use the value of `change-log-default-name'.
If 'change-log-default-name' is nil, behave as though it were 'ChangeLog'
\(or whatever we use on this operating system).

If 'change-log-default-name' contains a leading directory component, then
simply find it in the current directory.  Otherwise, search in the current 
directory and its successive parents for a file so named.
93 94 95

Once a file is found, `change-log-default-name' is set locally in the
current buffer to the complete file name."
96 97
  ;; If user specified a file name or if this buffer knows which one to use,
  ;; just use that.
98
  (or file-name
99 100 101
      (setq file-name (and change-log-default-name
			   (file-name-directory change-log-default-name)
			   change-log-default-name))
102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136
      (progn
	;; Chase links in the source file
	;; and use the change log in the dir where it points.
	(setq file-name (or (and buffer-file-name
				 (file-name-directory
				  (file-chase-links buffer-file-name)))
			    default-directory))
	(if (file-directory-p file-name)
	    (setq file-name (expand-file-name (change-log-name) file-name)))
	;; Chase links before visiting the file.
	;; This makes it easier to use a single change log file
	;; for several related directories.
	(setq file-name (file-chase-links file-name))
	(setq file-name (expand-file-name file-name))
	;; Move up in the dir hierarchy till we find a change log file.
	(let ((file1 file-name)
	      parent-dir)
	  (while (and (not (or (get-file-buffer file1) (file-exists-p file1)))
		      (progn (setq parent-dir
				   (file-name-directory
				    (directory-file-name
				     (file-name-directory file1))))
			     ;; Give up if we are already at the root dir.
			     (not (string= (file-name-directory file1)
					   parent-dir))))
	    ;; Move up to the parent dir and try again.
	    (setq file1 (expand-file-name 
			 (file-name-nondirectory (change-log-name))
			 parent-dir)))
	  ;; If we found a change log in a parent, use that.
	  (if (or (get-file-buffer file1) (file-exists-p file1))
	      (setq file-name file1)))))
  ;; Make a local variable in this buffer so we needn't search again.
  (set (make-local-variable 'change-log-default-name) file-name)
  file-name)
137

Eric S. Raymond's avatar
Eric S. Raymond committed
138
;;;###autoload
139
(defun add-change-log-entry (&optional whoami file-name other-window new-entry)
Eric S. Raymond's avatar
Eric S. Raymond committed
140 141 142
  "Find change log file and add an entry for today.
Optional arg (interactive prefix) non-nil means prompt for user name and site.
Second arg is file name of change log.  If nil, uses `change-log-default-name'.
143 144 145
Third arg OTHER-WINDOW non-nil means visit in other window.
Fourth arg NEW-ENTRY non-nil means always create a new entry at the front;
never append to an existing entry."
Eric S. Raymond's avatar
Eric S. Raymond committed
146 147
  (interactive (list current-prefix-arg
		     (prompt-for-change-log-name)))
148 149 150 151
  (or add-log-full-name
      (setq add-log-full-name (user-full-name)))
  (or add-log-mailing-address
      (setq add-log-mailing-address user-mail-address))
152 153 154
  (if whoami
      (progn
	(setq add-log-full-name (read-input "Full name: " add-log-full-name))
Eric S. Raymond's avatar
Eric S. Raymond committed
155 156 157 158
	 ;; Note that some sites have room and phone number fields in
	 ;; full name which look silly when inserted.  Rather than do
	 ;; anything about that here, let user give prefix argument so that
	 ;; s/he can edit the full name field in prompter if s/he wants.
159 160 161 162 163
	(setq add-log-mailing-address
	      (read-input "Mailing address: " add-log-mailing-address))))
  (let ((defun (funcall (or add-log-current-defun-function
			    'add-log-current-defun)))
	paragraph-end entry)
164

165
    (setq file-name (expand-file-name (find-change-log file-name)))
166 167 168 169 170 171 172 173 174 175 176 177

    ;; Set ENTRY to the file name to use in the new entry.
    (and buffer-file-name
	 ;; Never want to add a change log entry for the ChangeLog file itself.
	 (not (string= buffer-file-name file-name))
	 (setq entry (if (string-match
			  (concat "^" (regexp-quote (file-name-directory
						     file-name)))
			  buffer-file-name)
			 (substring buffer-file-name (match-end 0))
		       (file-name-nondirectory buffer-file-name))))

Eric S. Raymond's avatar
Eric S. Raymond committed
178 179 180
    (if (and other-window (not (equal file-name buffer-file-name)))
	(find-file-other-window file-name)
      (find-file file-name))
181 182
    (or (eq major-mode 'change-log-mode)
	(change-log-mode))
Eric S. Raymond's avatar
Eric S. Raymond committed
183 184
    (undo-boundary)
    (goto-char (point-min))
185
    (if (looking-at (concat (regexp-quote (substring (current-time-string)
186
						     0 10))
187
			    ".* " (regexp-quote add-log-full-name)
188
			    "  <" (regexp-quote add-log-mailing-address)))
189 190
	(forward-line 1)
      (insert (current-time-string)
191
	      "  " add-log-full-name
192
	      "  <" add-log-mailing-address ">\n\n"))
193

194
    ;; Search only within the first paragraph.
195 196 197
    (if (looking-at "\n*[^\n* \t]")
	(skip-chars-forward "\n")
      (forward-paragraph 1))
198
    (setq paragraph-end (point))
Eric S. Raymond's avatar
Eric S. Raymond committed
199
    (goto-char (point-min))
200

201
    ;; Now insert the new line for this entry.
202 203 204 205
    (cond ((re-search-forward "^\\s *\\*\\s *$" paragraph-end t)
	   ;; Put this file name into the existing empty entry.
	   (if entry
	       (insert entry)))
206
	  ((and (not new-entry)
207 208 209 210 211 212 213
		(let (case-fold-search)
		  (re-search-forward
		   (concat (regexp-quote (concat "* " entry))
			   ;; Don't accept `foo.bar' when
			   ;; looking for `foo':
			   "\\(\\s \\|[(),:]\\)")
		   paragraph-end t)))
214 215
	   ;; Add to the existing entry for the same file.
	   (re-search-forward "^\\s *$\\|^\\s \\*")
216 217
	   (goto-char (match-beginning 0))
	   ;; Delete excess empty lines; make just 2.
218
	   (while (and (not (eobp)) (looking-at "^\\s *$"))
219 220 221
	     (delete-region (point) (save-excursion (forward-line 1) (point))))
	   (insert "\n\n")
	   (forward-line -2)
Roland McGrath's avatar
Roland McGrath committed
222
	   (indent-relative-maybe))
Eric S. Raymond's avatar
Eric S. Raymond committed
223
	  (t
Roland McGrath's avatar
Roland McGrath committed
224 225 226 227
	   ;; Make a new entry.
	   (forward-line 1)
	   (while (looking-at "\\sW")
	     (forward-line 1))
228
	   (while (and (not (eobp)) (looking-at "^\\s *$"))
229 230 231
	     (delete-region (point) (save-excursion (forward-line 1) (point))))
	   (insert "\n\n\n")
	   (forward-line -2)
Roland McGrath's avatar
Roland McGrath committed
232 233
	   (indent-to left-margin)
	   (insert "* " (or entry ""))))
234
    ;; Now insert the function name, if we have one.
Eric S. Raymond's avatar
Eric S. Raymond committed
235 236 237 238
    ;; Point is at the entry for this file,
    ;; either at the end of the line or at the first blank line.
    (if defun
	(progn
Roland McGrath's avatar
Roland McGrath committed
239
	  ;; Make it easy to get rid of the function name.
Eric S. Raymond's avatar
Eric S. Raymond committed
240
	  (undo-boundary)
Roland McGrath's avatar
Roland McGrath committed
241 242 243 244 245 246
	  (insert (if (save-excursion
			(beginning-of-line 1)
			(looking-at "\\s *$")) 
		      ""
		    " ")
		  "(" defun "): "))
247
      ;; No function name, so put in a colon unless we have just a star.
Roland McGrath's avatar
Roland McGrath committed
248 249 250
      (if (not (save-excursion
		 (beginning-of-line 1)
		 (looking-at "\\s *\\(\\*\\s *\\)?$")))
251
	  (insert ": ")))))
Eric S. Raymond's avatar
Eric S. Raymond committed
252 253 254 255

;;;###autoload
(defun add-change-log-entry-other-window (&optional whoami file-name)
  "Find change log file in other window and add an entry for today.
256 257 258
Optional arg (interactive prefix) non-nil means prompt for user name and site.
Second arg is file name of change log.  \
If nil, uses `change-log-default-name'."
Eric S. Raymond's avatar
Eric S. Raymond committed
259 260 261 262
  (interactive (if current-prefix-arg
		   (list current-prefix-arg
			 (prompt-for-change-log-name))))
  (add-change-log-entry whoami file-name t))
263
;;;###autoload (define-key ctl-x-4-map "a" 'add-change-log-entry-other-window)
Eric S. Raymond's avatar
Eric S. Raymond committed
264

265
;;;###autoload
Eric S. Raymond's avatar
Eric S. Raymond committed
266
(defun change-log-mode ()
267
  "Major mode for editing change logs; like Indented Text Mode.
268
Prevents numeric backups and sets `left-margin' to 8 and `fill-column' to 74.
Roland McGrath's avatar
Roland McGrath committed
269 270 271
New log entries are usually made with \\[add-change-log-entry] or \\[add-change-log-entry-other-window].
Each entry behaves as a paragraph, and the entries for one day as a page.
Runs `change-log-mode-hook'."
Eric S. Raymond's avatar
Eric S. Raymond committed
272 273 274
  (interactive)
  (kill-all-local-variables)
  (indented-text-mode)
275 276 277
  (setq major-mode 'change-log-mode
	mode-name "Change Log"
	left-margin 8
278
	fill-column 74
279 280 281 282
	indent-tabs-mode t
	tab-width 8)
  (set (make-local-variable 'fill-paragraph-function)
       'change-log-fill-paragraph)
Eric S. Raymond's avatar
Eric S. Raymond committed
283
  ;; Let each entry behave as one paragraph:
284 285 286 287
  ;; We really do want "^" in paragraph-start below: it is only the lines that
  ;; begin at column 0 (despite the left-margin of 8) that we are looking for.
  (set (make-local-variable 'paragraph-start) "\\s *$\\|\f\\|^\\sw")
  (set (make-local-variable 'paragraph-separate) "\\s *$\\|\f\\|^\\sw")
Eric S. Raymond's avatar
Eric S. Raymond committed
288
  ;; Let all entries for one day behave as one page.
289 290
  ;; Match null string on the date-line so that the date-line
  ;; is grouped with what follows.
291
  (set (make-local-variable 'page-delimiter) "^\\<\\|^\f")
Roland McGrath's avatar
Roland McGrath committed
292 293
  (set (make-local-variable 'version-control) 'never)
  (set (make-local-variable 'adaptive-fill-regexp) "\\s *")
294 295
  (set (make-local-variable 'font-lock-defaults)
       '(change-log-font-lock-keywords t))
Eric S. Raymond's avatar
Eric S. Raymond committed
296 297
  (run-hooks 'change-log-mode-hook))

298 299 300 301 302 303 304 305
;; It might be nice to have a general feature to replace this.  The idea I
;; have is a variable giving a regexp matching text which should not be
;; moved from bol by filling.  change-log-mode would set this to "^\\s *\\s(".
;; But I don't feel up to implementing that today.
(defun change-log-fill-paragraph (&optional justify)
  "Fill the paragraph, but preserve open parentheses at beginning of lines.
Prefix arg means justify as well."
  (interactive "P")
306 307 308 309
  (let ((end (save-excursion (forward-paragraph) (point)))
	(beg (save-excursion (backward-paragraph)(point)))
	(paragraph-start (concat paragraph-start "\\|\\s *\\s(")))
    (fill-region beg end justify)))
310

Eric S. Raymond's avatar
Eric S. Raymond committed
311
(defvar add-log-current-defun-header-regexp
312
  "^\\([A-Z][A-Z_ ]*[A-Z_]\\|[-_a-zA-Z]+\\)[ \t]*[:=]"
Eric S. Raymond's avatar
Eric S. Raymond committed
313 314
  "*Heuristic regexp used by `add-log-current-defun' for unknown major modes.")

315
;;;###autoload
Eric S. Raymond's avatar
Eric S. Raymond committed
316 317 318
(defun add-log-current-defun ()
  "Return name of function definition point is in, or nil.

319
Understands C, Lisp, LaTeX (\"functions\" are chapters, sections, ...),
320
Texinfo (@node titles), Perl, and Fortran.
Eric S. Raymond's avatar
Eric S. Raymond committed
321 322 323 324 325 326 327

Other modes are handled by a heuristic that looks in the 10K before
point for uppercase headings starting in the first column or
identifiers followed by `:' or `=', see variable
`add-log-current-defun-header-regexp'.

Has a preference of looking backwards."
328 329 330
  (condition-case nil
      (save-excursion
	(let ((location (point)))
331 332
	  (cond ((memq major-mode '(emacs-lisp-mode lisp-mode scheme-mode
						    lisp-interaction-mode))
333
		 ;; If we are now precisely at the beginning of a defun,
334 335 336 337 338
		 ;; make sure beginning-of-defun finds that one
		 ;; rather than the previous one.
		 (or (eobp) (forward-char 1))
		 (beginning-of-defun)
		 ;; Make sure we are really inside the defun found, not after it.
339 340
		 (if (and (looking-at "\\s(")
			  (progn (end-of-defun)
341 342 343 344
				 (< location (point)))
			  (progn (forward-sexp -1)
				 (>= location (point))))
		     (progn
345 346 347
		       (if (looking-at "\\s(")
			   (forward-char 1))
		       (forward-sexp 1)
348
		       (skip-chars-forward " '")
349 350
		       (buffer-substring (point)
					 (progn (forward-sexp 1) (point))))))
351
		((and (memq major-mode '(c-mode c++-mode c++-c-mode objc-mode))
352 353 354 355 356
		      (save-excursion (beginning-of-line)
				      ;; Use eq instead of = here to avoid
				      ;; error when at bob and char-after
				      ;; returns nil.
				      (while (eq (char-after (- (point) 2)) ?\\)
Roland McGrath's avatar
Roland McGrath committed
357
					(forward-line -1))
358 359 360 361 362 363 364 365 366
				      (looking-at "[ \t]*#[ \t]*define[ \t]")))
		 ;; Handle a C macro definition.
		 (beginning-of-line)
		 (while (eq (char-after (- (point) 2)) ?\\) ;not =; note above
		   (forward-line -1))
		 (search-forward "define")
		 (skip-chars-forward " \t")
		 (buffer-substring (point)
				   (progn (forward-sexp 1) (point))))
367
		((memq major-mode '(c-mode c++-mode c++-c-mode objc-mode))
368 369 370 371 372 373 374 375 376 377 378 379 380
		 (beginning-of-line)
		 ;; See if we are in the beginning part of a function,
		 ;; before the open brace.  If so, advance forward.
		 (while (not (looking-at "{\\|\\(\\s *$\\)"))
		   (forward-line 1))
		 (or (eobp)
		     (forward-char 1))
		 (beginning-of-defun)
		 (if (progn (end-of-defun)
			    (< location (point)))
		     (progn
		       (backward-sexp 1)
		       (let (beg tem)
Eric S. Raymond's avatar
Eric S. Raymond committed
381

382 383 384 385 386 387 388 389 390
			 (forward-line -1)
			 ;; Skip back over typedefs of arglist.
			 (while (and (not (bobp))
				     (looking-at "[ \t\n]"))
			   (forward-line -1))
			 ;; See if this is using the DEFUN macro used in Emacs,
			 ;; or the DEFUN macro used by the C library.
			 (if (condition-case nil
				 (and (save-excursion
391 392 393
					(end-of-line)
					(while (= (preceding-char) ?\\)
					  (end-of-line 2))
394 395 396 397 398 399 400 401 402 403 404 405 406 407 408
					(backward-sexp 1)
					(beginning-of-line)
					(setq tem (point))
					(looking-at "DEFUN\\b"))
				      (>= location tem))
			       (error nil))
			     (progn
			       (goto-char tem)
			       (down-list 1)
			       (if (= (char-after (point)) ?\")
				   (progn
				     (forward-sexp 1)
				     (skip-chars-forward " ,")))
			       (buffer-substring (point)
						 (progn (forward-sexp 1) (point))))
409 410 411 412
                           (if (looking-at "^[+-]")
                               (get-method-definition)
                             ;; Ordinary C function syntax.
                             (setq beg (point))
413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434
                             (if (and (condition-case nil
					  ;; Protect against "Unbalanced parens" error.
					  (progn
					    (down-list 1) ; into arglist
					    (backward-up-list 1)
					    (skip-chars-backward " \t")
					    t)
					(error nil))
				      ;; Verify initial pos was after
				      ;; real start of function.
				      (save-excursion
					(goto-char beg)
					;; For this purpose, include the line
					;; that has the decl keywords.  This
					;; may also include some of the
					;; comments before the function.
					(while (and (not (bobp))
						    (save-excursion
						      (forward-line -1)
						      (looking-at "[^\n\f]")))
					  (forward-line -1))
					(>= location (point)))
435 436 437
                                          ;; Consistency check: going down and up
                                          ;; shouldn't take us back before BEG.
                                          (> (point) beg))
438 439 440 441 442 443 444 445 446 447 448 449
				 (let (end middle)
				   ;; Don't include any final newline
				   ;; in the name we use.
				   (if (= (preceding-char) ?\n)
				       (forward-char -1))
				   (setq end (point))
				   (backward-sexp 1)
				   ;; Now find the right beginning of the name.
				   ;; Include certain keywords if they
				   ;; precede the name.
				   (setq middle (point))
				   (forward-word -1)
450 451 452 453 454 455 456 457
				   ;; Ignore these subparts of a class decl
				   ;; and move back to the class name itself.
				   (while (looking-at "public \\|private ")
				     (skip-chars-backward " \t:")
				     (setq end (point))
				     (backward-sexp 1)
				     (setq middle (point))
				     (forward-word -1))
458 459 460 461
				   (and (bolp)
					(looking-at "struct \\|union \\|class ")
					(setq middle (point)))
				   (buffer-substring middle end)))))))))
462 463 464 465 466 467 468 469 470 471 472 473 474
		((memq major-mode
		       '(TeX-mode plain-TeX-mode LaTeX-mode;; tex-mode.el
				  plain-tex-mode latex-mode;; cmutex.el
				  ))
		 (if (re-search-backward
		      "\\\\\\(sub\\)*\\(section\\|paragraph\\|chapter\\)" nil t)
		     (progn
		       (goto-char (match-beginning 0))
		       (buffer-substring (1+ (point));; without initial backslash
					 (progn
					   (end-of-line)
					   (point))))))
		((eq major-mode 'texinfo-mode)
475
		 (if (re-search-backward "^@node[ \t]+\\([^,\n]+\\)" nil t)
476 477
		     (buffer-substring (match-beginning 1)
				       (match-end 1))))
478 479 480 481
		((eq major-mode 'perl-mode)
		 (if (re-search-backward "^sub[ \t]+\\([^ \t\n]+\\)" nil t)
		     (buffer-substring (match-beginning 1)
				       (match-end 1))))
482 483 484 485 486 487 488 489
                ((eq major-mode 'fortran-mode)
                 ;; must be inside function body for this to work
                 (beginning-of-fortran-subprogram)
                 (let ((case-fold-search t)) ; case-insensitive
                   ;; search for fortran subprogram start
                   (if (re-search-forward
			 "^[ \t]*\\(program\\|subroutine\\|function\
\\|[ \ta-z0-9*]*[ \t]+function\\)"
490
			 nil t)
491 492 493 494 495 496 497 498 499 500
                       (progn
                         ;; move to EOL or before first left paren
                         (if (re-search-forward "[(\n]" nil t)
			     (progn (forward-char -1)
				    (skip-chars-backward " \t"))
			   (end-of-line))
			 ;; Use the name preceding that.
                         (buffer-substring (point)
                                           (progn (forward-sexp -1)
                                                  (point)))))))
501 502 503 504 505 506 507 508 509 510
		(t
		 ;; If all else fails, try heuristics
		 (let (case-fold-search)
		   (end-of-line)
		   (if (re-search-backward add-log-current-defun-header-regexp
					   (- (point) 10000)
					   t)
		       (buffer-substring (match-beginning 1)
					 (match-end 1))))))))
    (error nil)))
Jim Blandy's avatar
Jim Blandy committed
511

512 513
(defvar get-method-definition-md)

514 515 516 517
;; Subroutine used within get-method-definition.
;; Add the last match in the buffer to the end of `md',
;; followed by the string END; move to the end of that match.
(defun get-method-definition-1 (end)
518 519 520 521
  (setq get-method-definition-md
	(concat get-method-definition-md 
		(buffer-substring (match-beginning 1) (match-end 1))
		end))
522 523 524 525
  (goto-char (match-end 0)))

;; For objective C, return the method name if we are in a method.
(defun get-method-definition ()
526
  (let ((get-method-definition-md "["))
527
    (save-excursion
528
      (if (re-search-backward "^@implementation\\s-*\\([A-Za-z_]*\\)" nil t)
529 530 531
	  (get-method-definition-1 " ")))
    (save-excursion
      (cond
532
       ((re-search-forward "^\\([-+]\\)[ \t\n\f\r]*\\(([^)]*)\\)?\\s-*" nil t)
533 534 535
	(get-method-definition-1 "")
	(while (not (looking-at "[{;]"))
	  (looking-at
536
	   "\\([A-Za-z_]*:?\\)\\s-*\\(([^)]*)\\)?[A-Za-z_]*[ \t\n\f\r]*")
537
	  (get-method-definition-1 ""))
538
	(concat get-method-definition-md "]"))))))
539

Jim Blandy's avatar
Jim Blandy committed
540

541 542
(provide 'add-log)

Eric S. Raymond's avatar
Eric S. Raymond committed
543
;;; add-log.el ends here