code.delx.au - gnu-emacs/blob - lisp/add-log.el

   1 ;;; add-log.el --- change log maintenance commands for Emacs
   2
   3 ;; Copyright (C) 1985, 1986, 1988, 1993, 1994 Free Software Foundation, Inc.
   4
   5 ;; Keywords: maint
   6
   7 ;; This file is part of GNU Emacs.
   8
   9 ;; GNU Emacs is free software; you can redistribute it and/or modify
  10 ;; it under the terms of the GNU General Public License as published by
  11 ;; the Free Software Foundation; either version 2, or (at your option)
  12 ;; any later version.
  13
  14 ;; GNU Emacs is distributed in the hope that it will be useful,
  15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 ;; GNU General Public License for more details.
  18
  19 ;; You should have received a copy of the GNU General Public License
  20 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  22 ;; Boston, MA 02111-1307, USA.
  23
  24 ;;; Commentary:
  25
  26 ;; This facility is documented in the Emacs Manual.
  27
  28 ;;; Code:
  29
  30 (defvar change-log-default-name nil
  31   "*Name of a change log file for \\[add-change-log-entry].")
  32
  33 (defvar add-log-current-defun-function nil
  34   "\
  35 *If non-nil, function to guess name of current function from surrounding text.
  36 \\[add-change-log-entry] calls this function (if nil, `add-log-current-defun'
  37 instead) with no arguments.  It returns a string or nil if it cannot guess.")
  38
  39 ;;;###autoload
  40 (defvar add-log-full-name nil
  41   "*Full name of user, for inclusion in ChangeLog daily headers.
  42 This defaults to the value returned by the `user-full-name' function.")
  43
  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   '(;;
  51     ;; Date lines, new and old styles.
  52     ("^\\sw........."
  53      (0 font-lock-string-face)
  54      ("[A-Z][^\n<]+" nil nil (0 font-lock-reference-face)))
  55     ;;
  56     ;; File names.
  57     ("^\t\\* \\([^ ,:([\n]+\\)"
  58      (1 font-lock-function-name-face)
  59      ("\\=, \\([^ ,:([\n]+\\)" nil nil (1 font-lock-function-name-face)))
  60     ;;
  61     ;; Function or variable names.
  62     ("(\\([^ ,:\n]+\\)"
  63      (1 font-lock-keyword-face)
  64      ("\\=, \\([^ ,:\n]+\\)" nil nil (1 font-lock-keyword-face)))
  65     ;;
  66     ;; Conditionals.
  67     ("\\[!?\\([^]\n]+\\)\\]\\(:\\| (\\)" (1 font-lock-variable-name-face))
  68     ;;
  69     ;; Acknowledgments.
  70     ("^\t\\(From\\|Reported by\\)" 1 font-lock-comment-face)
  71     )
  72   "Additional expressions to highlight in Change Log mode.")
  73
  74 (defvar change-log-mode-map nil
  75   "Keymap for Change Log major mode.")
  76 (if change-log-mode-map
  77     nil
  78   (setq change-log-mode-map (make-sparse-keymap)))
  79
  80 (defvar change-log-time-zone-rule nil
  81   "Time zone used for calculating change log time stamps.
  82 It takes the same format as the TZ argument of `set-time-zone-rule'.
  83 If nil, use local time.")
  84
  85 (defun iso8601-time-zone (time)
  86   (let* ((utc-offset (or (car (current-time-zone time)) 0))
  87          (sign (if (< utc-offset 0) ?- ?+))
  88          (sec (abs utc-offset))
  89          (ss (% sec 60))
  90          (min (/ sec 60))
  91          (mm (% min 60))
  92          (hh (/ min 60)))
  93     (format (cond ((not (zerop ss)) "%c%02d:%02d:%02d")
  94                   ((not (zerop mm)) "%c%02d:%02d")
  95                   (t "%c%02d"))
  96             sign hh mm ss)))
  97
  98 (defun change-log-name ()
  99   (or change-log-default-name
 100       (if (eq system-type 'vax-vms)
 101           "$CHANGE_LOG$.TXT"
 102         "ChangeLog")))
 103
 104 ;;;###autoload
 105 (defun prompt-for-change-log-name ()
 106   "Prompt for a change log name."
 107   (let* ((default (change-log-name))
 108          (name (expand-file-name
 109                 (read-file-name (format "Log file (default %s): " default)
 110                                 nil default))))
 111     ;; Handle something that is syntactically a directory name.
 112     ;; Look for ChangeLog or whatever in that directory.
 113     (if (string= (file-name-nondirectory name) "")
 114         (expand-file-name (file-name-nondirectory default)
 115                           name)
 116       ;; Handle specifying a file that is a directory.
 117       (if (file-directory-p name)
 118           (expand-file-name (file-name-nondirectory default)
 119                             (file-name-as-directory name))
 120         name))))
 121
 122 ;;;###autoload
 123 (defun find-change-log (&optional file-name)
 124   "Find a change log file for \\[add-change-log-entry] and return the name.
 125
 126 Optional arg FILE-NAME specifies the file to use.
 127 If FILE-NAME is nil, use the value of `change-log-default-name'.
 128 If 'change-log-default-name' is nil, behave as though it were 'ChangeLog'
 129 \(or whatever we use on this operating system).
 130
 131 If 'change-log-default-name' contains a leading directory component, then
 132 simply find it in the current directory.  Otherwise, search in the current
 133 directory and its successive parents for a file so named.
 134
 135 Once a file is found, `change-log-default-name' is set locally in the
 136 current buffer to the complete file name."
 137   ;; If user specified a file name or if this buffer knows which one to use,
 138   ;; just use that.
 139   (or file-name
 140       (setq file-name (and change-log-default-name
 141                            (file-name-directory change-log-default-name)
 142                            change-log-default-name))
 143       (progn
 144         ;; Chase links in the source file
 145         ;; and use the change log in the dir where it points.
 146         (setq file-name (or (and buffer-file-name
 147                                  (file-name-directory
 148                                   (file-chase-links buffer-file-name)))
 149                             default-directory))
 150         (if (file-directory-p file-name)
 151             (setq file-name (expand-file-name (change-log-name) file-name)))
 152         ;; Chase links before visiting the file.
 153         ;; This makes it easier to use a single change log file
 154         ;; for several related directories.
 155         (setq file-name (file-chase-links file-name))
 156         (setq file-name (expand-file-name file-name))
 157         ;; Move up in the dir hierarchy till we find a change log file.
 158         (let ((file1 file-name)
 159               parent-dir)
 160           (while (and (not (or (get-file-buffer file1) (file-exists-p file1)))
 161                       (progn (setq parent-dir
 162                                    (file-name-directory
 163                                     (directory-file-name
 164                                      (file-name-directory file1))))
 165                              ;; Give up if we are already at the root dir.
 166                              (not (string= (file-name-directory file1)
 167                                            parent-dir))))
 168             ;; Move up to the parent dir and try again.
 169             (setq file1 (expand-file-name
 170                          (file-name-nondirectory (change-log-name))
 171                          parent-dir)))
 172           ;; If we found a change log in a parent, use that.
 173           (if (or (get-file-buffer file1) (file-exists-p file1))
 174               (setq file-name file1)))))
 175   ;; Make a local variable in this buffer so we needn't search again.
 176   (set (make-local-variable 'change-log-default-name) file-name)
 177   file-name)
 178
 179 ;;;###autoload
 180 (defun add-change-log-entry (&optional whoami file-name other-window new-entry)
 181   "Find change log file and add an entry for today.
 182 Optional arg (interactive prefix) non-nil means prompt for user name and site.
 183 Second arg is file name of change log.  If nil, uses `change-log-default-name'.
 184 Third arg OTHER-WINDOW non-nil means visit in other window.
 185 Fourth arg NEW-ENTRY non-nil means always create a new entry at the front;
 186 never append to an existing entry.  Today's date is calculated according to
 187 `change-log-time-zone-rule' if non-nil, otherwise in local time."
 188   (interactive (list current-prefix-arg
 189                      (prompt-for-change-log-name)))
 190   (or add-log-full-name
 191       (setq add-log-full-name (user-full-name)))
 192   (or add-log-mailing-address
 193       (setq add-log-mailing-address user-mail-address))
 194   (if whoami
 195       (progn
 196         (setq add-log-full-name (read-input "Full name: " add-log-full-name))
 197          ;; Note that some sites have room and phone number fields in
 198          ;; full name which look silly when inserted.  Rather than do
 199          ;; anything about that here, let user give prefix argument so that
 200          ;; s/he can edit the full name field in prompter if s/he wants.
 201         (setq add-log-mailing-address
 202               (read-input "Mailing address: " add-log-mailing-address))))
 203   (let ((defun (funcall (or add-log-current-defun-function
 204                             'add-log-current-defun)))
 205         paragraph-end entry)
 206
 207     (setq file-name (expand-file-name (find-change-log file-name)))
 208
 209     ;; Set ENTRY to the file name to use in the new entry.
 210     (and buffer-file-name
 211          ;; Never want to add a change log entry for the ChangeLog file itself.
 212          (not (string= buffer-file-name file-name))
 213          (setq entry (if (string-match
 214                           (concat "^" (regexp-quote (file-name-directory
 215                                                      file-name)))
 216                           buffer-file-name)
 217                          (substring buffer-file-name (match-end 0))
 218                        (file-name-nondirectory buffer-file-name))))
 219
 220     (if (and other-window (not (equal file-name buffer-file-name)))
 221         (find-file-other-window file-name)
 222       (find-file file-name))
 223     (or (eq major-mode 'change-log-mode)
 224         (change-log-mode))
 225     (undo-boundary)
 226     (goto-char (point-min))
 227     (let ((new-entry (concat (if change-log-time-zone-rule
 228                                  (let ((tz (getenv "TZ"))
 229                                        (now (current-time)))
 230                                    (unwind-protect
 231                                        (progn
 232                                          (set-time-zone-rule
 233                                           change-log-time-zone-rule)
 234                                          (concat
 235                                           (format-time-string "%Y-%m-%d " now)
 236                                           (iso8601-time-zone now)))
 237                                      (set-time-zone-rule tz)))
 238                                (format-time-string "%Y-%m-%d"))
 239                              "  " add-log-full-name
 240                              "  <" add-log-mailing-address ">")))
 241       (if (looking-at (regexp-quote new-entry))
 242           (forward-line 1)
 243         (insert new-entry "\n\n")))
 244
 245     ;; Search only within the first paragraph.
 246     (if (looking-at "\n*[^\n* \t]")
 247         (skip-chars-forward "\n")
 248       (forward-paragraph 1))
 249     (setq paragraph-end (point))
 250     (goto-char (point-min))
 251
 252     ;; Now insert the new line for this entry.
 253     (cond ((re-search-forward "^\\s *\\*\\s *$" paragraph-end t)
 254            ;; Put this file name into the existing empty entry.
 255            (if entry
 256                (insert entry)))
 257           ((and (not new-entry)
 258                 (let (case-fold-search)
 259                   (re-search-forward
 260                    (concat (regexp-quote (concat "* " entry))
 261                            ;; Don't accept `foo.bar' when
 262                            ;; looking for `foo':
 263                            "\\(\\s \\|[(),:]\\)")
 264                    paragraph-end t)))
 265            ;; Add to the existing entry for the same file.
 266            (re-search-forward "^\\s *$\\|^\\s \\*")
 267            (goto-char (match-beginning 0))
 268            ;; Delete excess empty lines; make just 2.
 269            (while (and (not (eobp)) (looking-at "^\\s *$"))
 270              (delete-region (point) (save-excursion (forward-line 1) (point))))
 271            (insert "\n\n")
 272            (forward-line -2)
 273            (indent-relative-maybe))
 274           (t
 275            ;; Make a new entry.
 276            (forward-line 1)
 277            (while (looking-at "\\sW")
 278              (forward-line 1))
 279            (while (and (not (eobp)) (looking-at "^\\s *$"))
 280              (delete-region (point) (save-excursion (forward-line 1) (point))))
 281            (insert "\n\n\n")
 282            (forward-line -2)
 283            (indent-to left-margin)
 284            (insert "* " (or entry ""))))
 285     ;; Now insert the function name, if we have one.
 286     ;; Point is at the entry for this file,
 287     ;; either at the end of the line or at the first blank line.
 288     (if defun
 289         (progn
 290           ;; Make it easy to get rid of the function name.
 291           (undo-boundary)
 292           (insert (if (save-excursion
 293                         (beginning-of-line 1)
 294                         (looking-at "\\s *$"))
 295                       ""
 296                     " ")
 297                   "(" defun "): "))
 298       ;; No function name, so put in a colon unless we have just a star.
 299       (if (not (save-excursion
 300                  (beginning-of-line 1)
 301                  (looking-at "\\s *\\(\\*\\s *\\)?$")))
 302           (insert ": ")))))
 303
 304 ;;;###autoload
 305 (defun add-change-log-entry-other-window (&optional whoami file-name)
 306   "Find change log file in other window and add an entry for today.
 307 Optional arg (interactive prefix) non-nil means prompt for user name and site.
 308 Second arg is file name of change log.  \
 309 If nil, uses `change-log-default-name'."
 310   (interactive (if current-prefix-arg
 311                    (list current-prefix-arg
 312                          (prompt-for-change-log-name))))
 313   (add-change-log-entry whoami file-name t))
 314 ;;;###autoload (define-key ctl-x-4-map "a" 'add-change-log-entry-other-window)
 315
 316 ;;;###autoload
 317 (defun change-log-mode ()
 318   "Major mode for editing change logs; like Indented Text Mode.
 319 Prevents numeric backups and sets `left-margin' to 8 and `fill-column' to 74.
 320 New log entries are usually made with \\[add-change-log-entry] or \\[add-change-log-entry-other-window].
 321 Each entry behaves as a paragraph, and the entries for one day as a page.
 322 Runs `change-log-mode-hook'."
 323   (interactive)
 324   (kill-all-local-variables)
 325   (indented-text-mode)
 326   (setq major-mode 'change-log-mode
 327         mode-name "Change Log"
 328         left-margin 8
 329         fill-column 74
 330         indent-tabs-mode t
 331         tab-width 8)
 332   (use-local-map change-log-mode-map)
 333   (set (make-local-variable 'fill-paragraph-function)
 334        'change-log-fill-paragraph)
 335   ;; Let each entry behave as one paragraph:
 336   ;; We really do want "^" in paragraph-start below: it is only the lines that
 337   ;; begin at column 0 (despite the left-margin of 8) that we are looking for.
 338   (set (make-local-variable 'paragraph-start) "\\s *$\\|\f\\|^\\<")
 339   (set (make-local-variable 'paragraph-separate) "\\s *$\\|\f\\|^\\<")
 340   ;; Let all entries for one day behave as one page.
 341   ;; Match null string on the date-line so that the date-line
 342   ;; is grouped with what follows.
 343   (set (make-local-variable 'page-delimiter) "^\\<\\|^\f")
 344   (set (make-local-variable 'version-control) 'never)
 345   (set (make-local-variable 'adaptive-fill-regexp) "\\s *")
 346   (set (make-local-variable 'font-lock-defaults)
 347        '(change-log-font-lock-keywords t))
 348   (run-hooks 'change-log-mode-hook))
 349
 350 ;; It might be nice to have a general feature to replace this.  The idea I
 351 ;; have is a variable giving a regexp matching text which should not be
 352 ;; moved from bol by filling.  change-log-mode would set this to "^\\s *\\s(".
 353 ;; But I don't feel up to implementing that today.
 354 (defun change-log-fill-paragraph (&optional justify)
 355   "Fill the paragraph, but preserve open parentheses at beginning of lines.
 356 Prefix arg means justify as well."
 357   (interactive "P")
 358   (let ((end (progn (forward-paragraph) (point)))
 359         (beg (progn (backward-paragraph) (point)))
 360         (paragraph-start (concat paragraph-start "\\|\\s *\\s(")))
 361     (fill-region beg end justify)
 362     t))
 363 \f
 364 (defvar add-log-current-defun-header-regexp
 365   "^\\([A-Z][A-Z_ ]*[A-Z_]\\|[-_a-zA-Z]+\\)[ \t]*[:=]"
 366   "*Heuristic regexp used by `add-log-current-defun' for unknown major modes.")
 367
 368 ;;;###autoload
 369 (defun add-log-current-defun ()
 370   "Return name of function definition point is in, or nil.
 371
 372 Understands C, Lisp, LaTeX (\"functions\" are chapters, sections, ...),
 373 Texinfo (@node titles), Perl, and Fortran.
 374
 375 Other modes are handled by a heuristic that looks in the 10K before
 376 point for uppercase headings starting in the first column or
 377 identifiers followed by `:' or `=', see variable
 378 `add-log-current-defun-header-regexp'.
 379
 380 Has a preference of looking backwards."
 381   (condition-case nil
 382       (save-excursion
 383         (let ((location (point)))
 384           (cond ((memq major-mode '(emacs-lisp-mode lisp-mode scheme-mode
 385                                                     lisp-interaction-mode))
 386                  ;; If we are now precisely at the beginning of a defun,
 387                  ;; make sure beginning-of-defun finds that one
 388                  ;; rather than the previous one.
 389                  (or (eobp) (forward-char 1))
 390                  (beginning-of-defun)
 391                  ;; Make sure we are really inside the defun found, not after it.
 392                  (if (and (looking-at "\\s(")
 393                           (progn (end-of-defun)
 394                                  (< location (point)))
 395                           (progn (forward-sexp -1)
 396                                  (>= location (point))))
 397                      (progn
 398                        (if (looking-at "\\s(")
 399                            (forward-char 1))
 400                        (forward-sexp 1)
 401                        (skip-chars-forward " '")
 402                        (buffer-substring (point)
 403                                          (progn (forward-sexp 1) (point))))))
 404                 ((and (memq major-mode '(c-mode c++-mode c++-c-mode objc-mode))
 405                       (save-excursion (beginning-of-line)
 406                                       ;; Use eq instead of = here to avoid
 407                                       ;; error when at bob and char-after
 408                                       ;; returns nil.
 409                                       (while (eq (char-after (- (point) 2)) ?\\)
 410                                         (forward-line -1))
 411                                       (looking-at "[ \t]*#[ \t]*define[ \t]")))
 412                  ;; Handle a C macro definition.
 413                  (beginning-of-line)
 414                  (while (eq (char-after (- (point) 2)) ?\\) ;not =; note above
 415                    (forward-line -1))
 416                  (search-forward "define")
 417                  (skip-chars-forward " \t")
 418                  (buffer-substring (point)
 419                                    (progn (forward-sexp 1) (point))))
 420                 ((memq major-mode '(c-mode c++-mode c++-c-mode objc-mode))
 421                  (beginning-of-line)
 422                  ;; See if we are in the beginning part of a function,
 423                  ;; before the open brace.  If so, advance forward.
 424                  (while (not (looking-at "{\\|\\(\\s *$\\)"))
 425                    (forward-line 1))
 426                  (or (eobp)
 427                      (forward-char 1))
 428                  (beginning-of-defun)
 429                  (if (progn (end-of-defun)
 430                             (< location (point)))
 431                      (progn
 432                        (backward-sexp 1)
 433                        (let (beg tem)
 434
 435                          (forward-line -1)
 436                          ;; Skip back over typedefs of arglist.
 437                          (while (and (not (bobp))
 438                                      (looking-at "[ \t\n]"))
 439                            (forward-line -1))
 440                          ;; See if this is using the DEFUN macro used in Emacs,
 441                          ;; or the DEFUN macro used by the C library.
 442                          (if (condition-case nil
 443                                  (and (save-excursion
 444                                         (end-of-line)
 445                                         (while (= (preceding-char) ?\\)
 446                                           (end-of-line 2))
 447                                         (backward-sexp 1)
 448                                         (beginning-of-line)
 449                                         (setq tem (point))
 450                                         (looking-at "DEFUN\\b"))
 451                                       (>= location tem))
 452                                (error nil))
 453                              (progn
 454                                (goto-char tem)
 455                                (down-list 1)
 456                                (if (= (char-after (point)) ?\")
 457                                    (progn
 458                                      (forward-sexp 1)
 459                                      (skip-chars-forward " ,")))
 460                                (buffer-substring (point)
 461                                                  (progn (forward-sexp 1) (point))))
 462                            (if (looking-at "^[+-]")
 463                                (get-method-definition)
 464                              ;; Ordinary C function syntax.
 465                              (setq beg (point))
 466                              (if (and (condition-case nil
 467                                           ;; Protect against "Unbalanced parens" error.
 468                                           (progn
 469                                             (down-list 1) ; into arglist
 470                                             (backward-up-list 1)
 471                                             (skip-chars-backward " \t")
 472                                             t)
 473                                         (error nil))
 474                                       ;; Verify initial pos was after
 475                                       ;; real start of function.
 476                                       (save-excursion
 477                                         (goto-char beg)
 478                                         ;; For this purpose, include the line
 479                                         ;; that has the decl keywords.  This
 480                                         ;; may also include some of the
 481                                         ;; comments before the function.
 482                                         (while (and (not (bobp))
 483                                                     (save-excursion
 484                                                       (forward-line -1)
 485                                                       (looking-at "[^\n\f]")))
 486                                           (forward-line -1))
 487                                         (>= location (point)))
 488                                           ;; Consistency check: going down and up
 489                                           ;; shouldn't take us back before BEG.
 490                                           (> (point) beg))
 491                                  (let (end middle)
 492                                    ;; Don't include any final newline
 493                                    ;; in the name we use.
 494                                    (if (= (preceding-char) ?\n)
 495                                        (forward-char -1))
 496                                    (setq end (point))
 497                                    (backward-sexp 1)
 498                                    ;; Now find the right beginning of the name.
 499                                    ;; Include certain keywords if they
 500                                    ;; precede the name.
 501                                    (setq middle (point))
 502                                    (forward-word -1)
 503                                    ;; Ignore these subparts of a class decl
 504                                    ;; and move back to the class name itself.
 505                                    (while (looking-at "public \\|private ")
 506                                      (skip-chars-backward " \t:")
 507                                      (setq end (point))
 508                                      (backward-sexp 1)
 509                                      (setq middle (point))
 510                                      (forward-word -1))
 511                                    (and (bolp)
 512                                         (looking-at "struct \\|union \\|class ")
 513                                         (setq middle (point)))
 514                                    (buffer-substring middle end)))))))))
 515                 ((memq major-mode
 516                        '(TeX-mode plain-TeX-mode LaTeX-mode;; tex-mode.el
 517                                   plain-tex-mode latex-mode;; cmutex.el
 518                                   ))
 519                  (if (re-search-backward
 520                       "\\\\\\(sub\\)*\\(section\\|paragraph\\|chapter\\)" nil t)
 521                      (progn
 522                        (goto-char (match-beginning 0))
 523                        (buffer-substring (1+ (point));; without initial backslash
 524                                          (progn
 525                                            (end-of-line)
 526                                            (point))))))
 527                 ((eq major-mode 'texinfo-mode)
 528                  (if (re-search-backward "^@node[ \t]+\\([^,\n]+\\)" nil t)
 529                      (buffer-substring (match-beginning 1)
 530                                        (match-end 1))))
 531                 ((eq major-mode 'perl-mode)
 532                  (if (re-search-backward "^sub[ \t]+\\([^ \t\n]+\\)" nil t)
 533                      (buffer-substring (match-beginning 1)
 534                                        (match-end 1))))
 535                 ((eq major-mode 'fortran-mode)
 536                  ;; must be inside function body for this to work
 537                  (beginning-of-fortran-subprogram)
 538                  (let ((case-fold-search t)) ; case-insensitive
 539                    ;; search for fortran subprogram start
 540                    (if (re-search-forward
 541                          "^[ \t]*\\(program\\|subroutine\\|function\
 542 \\|[ \ta-z0-9*]*[ \t]+function\\)"
 543                          nil t)
 544                        (progn
 545                          ;; move to EOL or before first left paren
 546                          (if (re-search-forward "[(\n]" nil t)
 547                              (progn (forward-char -1)
 548                                     (skip-chars-backward " \t"))
 549                            (end-of-line))
 550                          ;; Use the name preceding that.
 551                          (buffer-substring (point)
 552                                            (progn (forward-sexp -1)
 553                                                   (point)))))))
 554                 (t
 555                  ;; If all else fails, try heuristics
 556                  (let (case-fold-search)
 557                    (end-of-line)
 558                    (if (re-search-backward add-log-current-defun-header-regexp
 559                                            (- (point) 10000)
 560                                            t)
 561                        (buffer-substring (match-beginning 1)
 562                                          (match-end 1))))))))
 563     (error nil)))
 564
 565 (defvar get-method-definition-md)
 566
 567 ;; Subroutine used within get-method-definition.
 568 ;; Add the last match in the buffer to the end of `md',
 569 ;; followed by the string END; move to the end of that match.
 570 (defun get-method-definition-1 (end)
 571   (setq get-method-definition-md
 572         (concat get-method-definition-md
 573                 (buffer-substring (match-beginning 1) (match-end 1))
 574                 end))
 575   (goto-char (match-end 0)))
 576
 577 ;; For objective C, return the method name if we are in a method.
 578 (defun get-method-definition ()
 579   (let ((get-method-definition-md "["))
 580     (save-excursion
 581       (if (re-search-backward "^@implementation\\s-*\\([A-Za-z_]*\\)" nil t)
 582           (get-method-definition-1 " ")))
 583     (save-excursion
 584       (cond
 585        ((re-search-forward "^\\([-+]\\)[ \t\n\f\r]*\\(([^)]*)\\)?\\s-*" nil t)
 586         (get-method-definition-1 "")
 587         (while (not (looking-at "[{;]"))
 588           (looking-at
 589            "\\([A-Za-z_]*:?\\)\\s-*\\(([^)]*)\\)?[A-Za-z_]*[ \t\n\f\r]*")
 590           (get-method-definition-1 ""))
 591         (concat get-method-definition-md "]"))))))
 592
 593
 594 (provide 'add-log)
 595
 596 ;;; add-log.el ends here