lisp/log-edit.el

   1 ;;; log-edit.el --- Major mode for editing CVS commit messages
   2
   3 ;; Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004,
   4 ;;   2005, 2006, 2007 Free Software Foundation, Inc.
   5
   6 ;; Author: Stefan Monnier <monnier@iro.umontreal.ca>
   7 ;; Keywords: pcl-cvs cvs commit log
   8
   9 ;; This file is part of GNU Emacs.
  10
  11 ;; GNU Emacs is free software; you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation; either version 2, or (at your option)
  14 ;; any later version.
  15
  16 ;; GNU Emacs is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  23 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  24 ;; Boston, MA 02110-1301, USA.
  25
  26 ;;; Commentary:
  27
  28 ;; Todo:
  29
  30 ;; - Move in VC's code
  31 ;; - Add compatibility for VC's hook variables
  32
  33 ;;; Code:
  34
  35 (eval-when-compile (require 'cl))
  36 (require 'add-log)                      ; for all the ChangeLog goodies
  37 (require 'pcvs-util)
  38 (require 'ring)
  39
  40 ;;;;
  41 ;;;; Global Variables
  42 ;;;;
  43
  44 (defgroup log-edit nil
  45   "Major mode for editing RCS and CVS commit messages."
  46   :group 'pcl-cvs
  47   :group 'vc                            ; It's used by VC.
  48   :version "21.1"
  49   :prefix "log-edit-")
  50
  51 ;; compiler pacifiers
  52 (defvar cvs-buffer)
  53
  54 \f
  55 ;; The main keymap
  56
  57 (easy-mmode-defmap log-edit-mode-map
  58   `(("\C-c\C-c" . log-edit-done)
  59     ("\C-c\C-a" . log-edit-insert-changelog)
  60     ("\C-c\C-f" . log-edit-show-files)
  61     ("\M-n"     . log-edit-next-comment)
  62     ("\M-p"     . log-edit-previous-comment)
  63     ("\M-r"     . log-edit-comment-search-backward)
  64     ("\M-s"     . log-edit-comment-search-forward)
  65     ("\C-c?"    . log-edit-mode-help))
  66   "Keymap for the `log-edit-mode' (to edit version control log messages)."
  67   :group 'log-edit)
  68
  69 ;; Compatibility with old names.  Should we bother ?
  70 (defvar vc-log-mode-map log-edit-mode-map)
  71 (defvar vc-log-entry-mode vc-log-mode-map)
  72
  73 (easy-menu-define log-edit-menu log-edit-mode-map
  74   "Menu used for `log-edit-mode'."
  75   '("Log-Edit"
  76     ["Done" log-edit-done
  77      :help "Exit log-edit and proceed with the actual action."]
  78     "--"
  79     ["Insert ChangeLog" log-edit-insert-changelog]
  80     ["Add to ChangeLog" log-edit-add-to-changelog]
  81     "--"
  82     ["List files" log-edit-show-files
  83      :help "Show the list of relevant files."]
  84     "--"
  85     ["Previous comment"         log-edit-previous-comment]
  86     ["Next comment"             log-edit-next-comment]
  87     ["Search comment forward"   log-edit-comment-search-forward]
  88     ["Search comment backward"  log-edit-comment-search-backward]))
  89
  90 (defcustom log-edit-confirm 'changed
  91   "*If non-nil, `log-edit-done' will request confirmation.
  92 If 'changed, only request confirmation if the list of files has
  93   changed since the beginning of the log-edit session."
  94   :group 'log-edit
  95   :type '(choice (const changed) (const t) (const nil)))
  96
  97 (defcustom log-edit-keep-buffer nil
  98   "*If non-nil, don't hide the buffer after `log-edit-done'."
  99   :group 'log-edit
 100   :type 'boolean)
 101
 102 (defvar cvs-commit-buffer-require-final-newline t)
 103 (make-obsolete-variable 'cvs-commit-buffer-require-final-newline
 104                         'log-edit-require-final-newline)
 105
 106 (defcustom log-edit-require-final-newline
 107   cvs-commit-buffer-require-final-newline
 108   "*Enforce a newline at the end of commit log messages.
 109 Enforce it silently if t, query if non-nil and don't do anything if nil."
 110   :group 'log-edit
 111   :type '(choice (const ask) (const t) (const nil)))
 112
 113 (defcustom log-edit-setup-invert nil
 114   "*Non-nil means `log-edit' should invert the meaning of its SETUP arg.
 115 If SETUP is 'force, this variable has no effect."
 116   :group 'log-edit
 117   :type 'boolean)
 118
 119 (defcustom log-edit-hook '(log-edit-insert-cvs-template
 120                            log-edit-insert-changelog)
 121   "*Hook run at the end of `log-edit'."
 122   :group 'log-edit
 123   :type '(hook :options (log-edit-insert-changelog
 124                          log-edit-insert-cvs-rcstemplate
 125                          log-edit-insert-cvs-template
 126                          log-edit-insert-filenames)))
 127
 128 (defcustom log-edit-mode-hook (if (boundp 'vc-log-mode-hook) vc-log-mode-hook)
 129   "*Hook run when entering `log-edit-mode'."
 130   :group 'log-edit
 131   :type 'hook)
 132
 133 (defcustom log-edit-done-hook nil
 134   "*Hook run before doing the actual commit.
 135 This hook can be used to cleanup the message, enforce various
 136 conventions, or to allow recording the message in some other database,
 137 such as a bug-tracking system.  The list of files about to be committed
 138 can be obtained from `log-edit-files'."
 139   :group 'log-edit
 140   :type '(hook :options (log-edit-set-common-indentation
 141                          log-edit-add-to-changelog)))
 142
 143 (defvar cvs-changelog-full-paragraphs t)
 144 (make-obsolete-variable 'cvs-changelog-full-paragraphs
 145                         'log-edit-changelog-full-paragraphs)
 146
 147 (defvar log-edit-changelog-full-paragraphs cvs-changelog-full-paragraphs
 148   "*If non-nil, include full ChangeLog paragraphs in the log.
 149 This may be set in the ``local variables'' section of a ChangeLog, to
 150 indicate the policy for that ChangeLog.
 151
 152 A ChangeLog paragraph is a bunch of log text containing no blank lines;
 153 a paragraph usually describes a set of changes with a single purpose,
 154 but perhaps spanning several functions in several files.  Changes in
 155 different paragraphs are unrelated.
 156
 157 You could argue that the log entry for a file should contain the
 158 full ChangeLog paragraph mentioning the change to the file, even though
 159 it may mention other files, because that gives you the full context you
 160 need to understand the change.  This is the behavior you get when this
 161 variable is set to t.
 162
 163 On the other hand, you could argue that the log entry for a change
 164 should contain only the text for the changes which occurred in that
 165 file, because the log is per-file.  This is the behavior you get
 166 when this variable is set to nil.")
 167
 168 ;;;; Internal global or buffer-local vars
 169
 170 (defconst log-edit-files-buf "*log-edit-files*")
 171 (defvar log-edit-initial-files nil)
 172 (defvar log-edit-callback nil)
 173 (defvar log-edit-listfun nil)
 174 (defvar log-edit-parent-buffer nil)
 175
 176 ;;; Originally taken from VC-Log mode
 177
 178 (defconst log-edit-maximum-comment-ring-size 32
 179   "Maximum number of saved comments in the comment ring.")
 180 (defvar log-edit-comment-ring (make-ring log-edit-maximum-comment-ring-size))
 181 (defvar log-edit-comment-ring-index nil)
 182 (defvar log-edit-last-comment-match "")
 183
 184 (defun log-edit-new-comment-index (stride len)
 185   "Return the comment index STRIDE elements from the current one.
 186 LEN is the length of `log-edit-comment-ring'."
 187   (mod (cond
 188         (log-edit-comment-ring-index (+ log-edit-comment-ring-index stride))
 189         ;; Initialize the index on the first use of this command
 190         ;; so that the first M-p gets index 0, and the first M-n gets
 191         ;; index -1.
 192         ((> stride 0) (1- stride))
 193         (t stride))
 194        len))
 195
 196 (defun log-edit-previous-comment (arg)
 197   "Cycle backwards through comment history.
 198 With a numeric prefix ARG, go back ARG comments."
 199   (interactive "*p")
 200   (let ((len (ring-length log-edit-comment-ring)))
 201     (if (<= len 0)
 202         (progn (message "Empty comment ring") (ding))
 203       ;; Don't use `erase-buffer' because we don't want to `widen'.
 204       (delete-region (point-min) (point-max))
 205       (setq log-edit-comment-ring-index (log-edit-new-comment-index arg len))
 206       (message "Comment %d" (1+ log-edit-comment-ring-index))
 207       (insert (ring-ref log-edit-comment-ring log-edit-comment-ring-index)))))
 208
 209 (defun log-edit-next-comment (arg)
 210   "Cycle forwards through comment history.
 211 With a numeric prefix ARG, go forward ARG comments."
 212   (interactive "*p")
 213   (log-edit-previous-comment (- arg)))
 214
 215 (defun log-edit-comment-search-backward (str &optional stride)
 216   "Search backwards through comment history for substring match of STR.
 217 If the optional argument STRIDE is present, that is a step-width to use
 218 when going through the comment ring."
 219   ;; Why substring rather than regexp ?   -sm
 220   (interactive
 221    (list (read-string "Comment substring: " nil nil log-edit-last-comment-match)))
 222   (unless stride (setq stride 1))
 223   (if (string= str "")
 224       (setq str log-edit-last-comment-match)
 225     (setq log-edit-last-comment-match str))
 226   (let* ((str (regexp-quote str))
 227          (len (ring-length log-edit-comment-ring))
 228          (n (log-edit-new-comment-index stride len)))
 229     (while (progn (when (or (>= n len) (< n 0)) (error "Not found"))
 230                   (not (string-match str (ring-ref log-edit-comment-ring n))))
 231       (setq n (+ n stride)))
 232     (setq log-edit-comment-ring-index n)
 233     (log-edit-previous-comment 0)))
 234
 235 (defun log-edit-comment-search-forward (str)
 236   "Search forwards through comment history for a substring match of STR."
 237   (interactive
 238    (list (read-string "Comment substring: " nil nil log-edit-last-comment-match)))
 239   (log-edit-comment-search-backward str -1))
 240
 241 (defun log-edit-comment-to-change-log (&optional whoami file-name)
 242   "Enter last VC comment into the change log for the current file.
 243 WHOAMI (interactive prefix) non-nil means prompt for user name
 244 and site.  FILE-NAME is the name of the change log; if nil, use
 245 `change-log-default-name'.
 246
 247 This may be useful as a `log-edit-checkin-hook' to update change logs
 248 automatically."
 249   (interactive (if current-prefix-arg
 250                    (list current-prefix-arg
 251                          (prompt-for-change-log-name))))
 252   (let (;; Extract the comment first so we get any error before doing anything.
 253         (comment (ring-ref log-edit-comment-ring 0))
 254         ;; Don't let add-change-log-entry insert a defun name.
 255         (add-log-current-defun-function 'ignore)
 256         end)
 257     ;; Call add-log to do half the work.
 258     (add-change-log-entry whoami file-name t t)
 259     ;; Insert the VC comment, leaving point before it.
 260     (setq end (save-excursion (insert comment) (point-marker)))
 261     (if (looking-at "\\s *\\s(")
 262         ;; It starts with an open-paren, as in "(foo): Frobbed."
 263         ;; So remove the ": " add-log inserted.
 264         (delete-char -2))
 265     ;; Canonicalize the white space between the file name and comment.
 266     (just-one-space)
 267     ;; Indent rest of the text the same way add-log indented the first line.
 268     (let ((indentation (current-indentation)))
 269       (save-excursion
 270         (while (< (point) end)
 271           (forward-line 1)
 272           (indent-to indentation))
 273         (setq end (point))))
 274     ;; Fill the inserted text, preserving open-parens at bol.
 275     (let ((paragraph-start (concat paragraph-start "\\|\\s *\\s(")))
 276       (beginning-of-line)
 277       (fill-region (point) end))
 278     ;; Canonicalize the white space at the end of the entry so it is
 279     ;; separated from the next entry by a single blank line.
 280     (skip-syntax-forward " " end)
 281     (delete-char (- (skip-syntax-backward " ")))
 282     (or (eobp) (looking-at "\n\n")
 283         (insert "\n"))))
 284
 285 ;; Compatibility with old names.
 286 (define-obsolete-variable-alias 'vc-comment-ring 'log-edit-comment-ring "22.1")
 287 (define-obsolete-variable-alias 'vc-comment-ring-index 'log-edit-comment-ring-index "22.1")
 288 (define-obsolete-function-alias 'vc-previous-comment 'log-edit-previous-comment "22.1")
 289 (define-obsolete-function-alias 'vc-next-comment 'log-edit-next-comment "22.1")
 290 (define-obsolete-function-alias 'vc-comment-search-reverse 'log-edit-comment-search-backward "22.1")
 291 (define-obsolete-function-alias 'vc-comment-search-forward 'log-edit-comment-search-forward "22.1")
 292 (define-obsolete-function-alias 'vc-comment-to-change-log 'log-edit-comment-to-change-log "22.1")
 293
 294 ;;;
 295 ;;; Actual code
 296 ;;;
 297
 298 (defvar log-edit-font-lock-keywords
 299   '(("\\`\\(Summary:\\)\\(.*\\)"
 300      (1 font-lock-keyword-face)
 301      (2 font-lock-function-name-face))))
 302
 303 ;;;###autoload
 304 (defun log-edit (callback &optional setup listfun buffer &rest ignore)
 305   "Setup a buffer to enter a log message.
 306 \\<log-edit-mode-map>The buffer will be put in `log-edit-mode'.
 307 If SETUP is non-nil, the buffer is then erased and `log-edit-hook' is run.
 308 Mark and point will be set around the entire contents of the
 309 buffer so that it is easy to kill the contents of the buffer with \\[kill-region].
 310 Once you're done editing the message, pressing \\[log-edit-done] will call
 311 `log-edit-done' which will end up calling CALLBACK to do the actual commit.
 312 LISTFUN if non-nil is a function of no arguments returning the list of files
 313   that are concerned by the current operation (using relative names).
 314 If BUFFER is non-nil `log-edit' will jump to that buffer, use it to edit the
 315   log message and go back to the current buffer when done.  Otherwise, it
 316   uses the current buffer."
 317   (let ((parent (current-buffer)))
 318     (if buffer (pop-to-buffer buffer))
 319     (when (and log-edit-setup-invert (not (eq setup 'force)))
 320       (setq setup (not setup)))
 321     (when setup (erase-buffer))
 322     (log-edit-mode)
 323     (set (make-local-variable 'log-edit-callback) callback)
 324     (set (make-local-variable 'log-edit-listfun) listfun)
 325     (if buffer (set (make-local-variable 'log-edit-parent-buffer) parent))
 326     (set (make-local-variable 'log-edit-initial-files) (log-edit-files))
 327     (when setup (run-hooks 'log-edit-hook))
 328     (goto-char (point-min)) (push-mark (point-max))
 329     (message "%s" (substitute-command-keys
 330               "Press \\[log-edit-done] when you are done editing."))))
 331
 332 (define-derived-mode log-edit-mode text-mode "Log-Edit"
 333   "Major mode for editing version-control log messages.
 334 When done editing the log entry, just type \\[log-edit-done] which
 335 will trigger the actual commit of the file(s).
 336 Several other handy support commands are provided of course and
 337 the package from which this is used might also provide additional
 338 commands (under C-x v for VC, for example).
 339
 340 \\{log-edit-mode-map}"
 341   (set (make-local-variable 'font-lock-defaults)
 342        '(log-edit-font-lock-keywords t))
 343   (make-local-variable 'log-edit-comment-ring-index))
 344
 345 (defun log-edit-hide-buf (&optional buf where)
 346   (when (setq buf (get-buffer (or buf log-edit-files-buf)))
 347     (let ((win (get-buffer-window buf where)))
 348       (if win (ignore-errors (delete-window win))))
 349     (bury-buffer buf)))
 350
 351 (defun log-edit-done ()
 352   "Finish editing the log message and commit the files.
 353 If you want to abort the commit, simply delete the buffer."
 354   (interactive)
 355   ;; Get rid of trailing empty lines
 356   (goto-char (point-max))
 357   (skip-syntax-backward " ")
 358   (when (equal (char-after) ?\n) (forward-char 1))
 359   (delete-region (point) (point-max))
 360   ;; Check for final newline
 361   (if (and (> (point-max) (point-min))
 362            (/= (char-before (point-max)) ?\n)
 363            (or (eq log-edit-require-final-newline t)
 364                (and log-edit-require-final-newline
 365                     (y-or-n-p
 366                      (format "Buffer %s does not end in newline.  Add one? "
 367                              (buffer-name))))))
 368       (save-excursion
 369         (goto-char (point-max))
 370         (insert ?\n)))
 371   (let ((comment (buffer-string)))
 372     (when (or (ring-empty-p log-edit-comment-ring)
 373               (not (equal comment (ring-ref log-edit-comment-ring 0))))
 374       (ring-insert log-edit-comment-ring comment)))
 375   (let ((win (get-buffer-window log-edit-files-buf)))
 376     (if (and log-edit-confirm
 377              (not (and (eq log-edit-confirm 'changed)
 378                        (equal (log-edit-files) log-edit-initial-files)))
 379              (progn
 380                (log-edit-show-files)
 381                (not (y-or-n-p "Really commit? "))))
 382         (progn (when (not win) (log-edit-hide-buf))
 383                (message "Oh, well!  Later maybe?"))
 384       (run-hooks 'log-edit-done-hook)
 385       (log-edit-hide-buf)
 386       (unless (or log-edit-keep-buffer (not log-edit-parent-buffer))
 387         (cvs-bury-buffer (current-buffer) log-edit-parent-buffer))
 388       (call-interactively log-edit-callback))))
 389
 390 (defun log-edit-files ()
 391   "Return the list of files that are about to be committed."
 392   (ignore-errors (funcall log-edit-listfun)))
 393
 394 (defun log-edit-mode-help ()
 395   "Provide help for the `log-edit-mode-map'."
 396   (interactive)
 397   (if (eq last-command 'log-edit-mode-help)
 398       (describe-function major-mode)
 399     (message "%s"
 400      (substitute-command-keys
 401       "Type `\\[log-edit-done]' to finish commit.  Try `\\[describe-function] log-edit-done' for more help."))))
 402
 403 (defcustom log-edit-common-indent 0
 404   "Minimum indentation to use in `log-edit-set-common-indentation'."
 405   :group 'log-edit
 406   :type 'integer)
 407
 408 (defun log-edit-set-common-indentation ()
 409   "(Un)Indent the current buffer rigidly to `log-edit-common-indent'."
 410   (save-excursion
 411     (let ((common (point-max)))
 412       (goto-char (point-min))
 413       (while (< (point) (point-max))
 414         (if (not (looking-at "^[ \t]*$"))
 415             (setq common (min common (current-indentation))))
 416         (forward-line 1))
 417       (indent-rigidly (point-min) (point-max)
 418                       (- log-edit-common-indent common)))))
 419
 420 (defun log-edit-show-files ()
 421   "Show the list of files to be committed."
 422   (interactive)
 423   (let* ((files (log-edit-files))
 424          (buf (get-buffer-create log-edit-files-buf)))
 425     (with-current-buffer buf
 426       (log-edit-hide-buf buf 'all)
 427       (setq buffer-read-only nil)
 428       (erase-buffer)
 429       (cvs-insert-strings files)
 430       (setq buffer-read-only t)
 431       (goto-char (point-min))
 432       (save-selected-window
 433         (cvs-pop-to-buffer-same-frame buf)
 434         (shrink-window-if-larger-than-buffer)
 435         (selected-window)))))
 436
 437 (defun log-edit-insert-cvs-template ()
 438   "Insert the template specified by the CVS administrator, if any.
 439 This simply uses the local CVS/Template file."
 440   (interactive)
 441   (when (or (interactive-p) (= (point-min) (point-max)))
 442     (when (file-readable-p "CVS/Template")
 443       (insert-file-contents "CVS/Template"))))
 444
 445 (defun log-edit-insert-cvs-rcstemplate ()
 446   "Insert the rcstemplate from the CVS repository.
 447 This contacts the repository to get the rcstemplate file and
 448 can thus take some time."
 449   (interactive)
 450   (when (or (interactive-p) (= (point-min) (point-max)))
 451     (when (file-readable-p "CVS/Root")
 452       ;; Ignore the stderr stuff, even if it's an error.
 453       (call-process "cvs" nil '(t nil) nil
 454                     "checkout" "-p" "CVSROOT/rcstemplate"))))
 455
 456 (defun log-edit-insert-filenames ()
 457   "Insert the list of files that are to be committed."
 458   (interactive)
 459   (insert "Affected files:  \n"
 460           (mapconcat 'identity (log-edit-files) "  \n")))
 461
 462 (defun log-edit-add-to-changelog ()
 463   "Insert this log message into the appropriate ChangeLog file."
 464   (interactive)
 465   ;; Yuck!
 466   (unless (string= (buffer-string) (ring-ref log-edit-comment-ring 0))
 467     (ring-insert log-edit-comment-ring (buffer-string)))
 468   (dolist (f (log-edit-files))
 469     (let ((buffer-file-name (expand-file-name f)))
 470       (save-excursion
 471         (log-edit-comment-to-change-log)))))
 472
 473 (defvar log-edit-changelog-use-first nil)
 474 (defun log-edit-insert-changelog (&optional use-first)
 475   "Insert a log message by looking at the ChangeLog.
 476 The idea is to write your ChangeLog entries first, and then use this
 477 command to commit your changes.
 478
 479 To select default log text, we:
 480 - find the ChangeLog entries for the files to be checked in,
 481 - verify that the top entry in the ChangeLog is on the current date
 482   and by the current user; if not, we don't provide any default text,
 483 - search the ChangeLog entry for paragraphs containing the names of
 484   the files we're checking in, and finally
 485 - use those paragraphs as the log text.
 486
 487 If the optional prefix arg USE-FIRST is given (via \\[universal-argument]),
 488 or if the command is repeated a second time in a row, use the first log entry
 489 regardless of user name or time."
 490   (interactive "P")
 491   (let ((log-edit-changelog-use-first
 492          (or use-first (eq last-command 'log-edit-insert-changelog))))
 493     (log-edit-insert-changelog-entries (log-edit-files)))
 494   (log-edit-set-common-indentation)
 495   (goto-char (point-min))
 496   (when (looking-at "\\*\\s-+")
 497     (forward-line 1)
 498     (when (not (re-search-forward "^\\*\\s-+" nil t))
 499       (goto-char (point-min))
 500       (skip-chars-forward "^():")
 501       (skip-chars-forward ": ")
 502       (delete-region (point-min) (point)))))
 503
 504 ;;;;
 505 ;;;; functions for getting commit message from ChangeLog a file...
 506 ;;;; Courtesy Jim Blandy
 507 ;;;;
 508
 509 (defun log-edit-narrow-changelog ()
 510   "Narrow to the top page of the current buffer, a ChangeLog file.
 511 Actually, the narrowed region doesn't include the date line.
 512 A \"page\" in a ChangeLog file is the area between two dates."
 513   (or (eq major-mode 'change-log-mode)
 514       (error "log-edit-narrow-changelog: current buffer isn't a ChangeLog"))
 515
 516   (goto-char (point-min))
 517
 518   ;; Skip date line and subsequent blank lines.
 519   (forward-line 1)
 520   (if (looking-at "[ \t\n]*\n")
 521       (goto-char (match-end 0)))
 522
 523   (let ((start (point)))
 524     (forward-page 1)
 525     (narrow-to-region start (point))
 526     (goto-char (point-min))))
 527
 528 (defun log-edit-changelog-paragraph ()
 529   "Return the bounds of the ChangeLog paragraph containing point.
 530 If we are between paragraphs, return the previous paragraph."
 531   (save-excursion
 532     (beginning-of-line)
 533     (if (looking-at "^[ \t]*$")
 534         (skip-chars-backward " \t\n" (point-min)))
 535     (list (progn
 536             (if (re-search-backward "^[ \t]*\n" nil 'or-to-limit)
 537                 (goto-char (match-end 0)))
 538             (point))
 539           (if (re-search-forward "^[ \t\n]*$" nil t)
 540               (match-beginning 0)
 541             (point-max)))))
 542
 543 (defun log-edit-changelog-subparagraph ()
 544   "Return the bounds of the ChangeLog subparagraph containing point.
 545 A subparagraph is a block of non-blank lines beginning with an asterisk.
 546 If we are between sub-paragraphs, return the previous subparagraph."
 547   (save-excursion
 548     (end-of-line)
 549     (if (search-backward "*" nil t)
 550         (list (progn (beginning-of-line) (point))
 551               (progn
 552                 (forward-line 1)
 553                 (if (re-search-forward "^[ \t]*[\n*]" nil t)
 554                     (match-beginning 0)
 555                   (point-max))))
 556       (list (point) (point)))))
 557
 558 (defun log-edit-changelog-entry ()
 559   "Return the bounds of the ChangeLog entry containing point.
 560 The variable `log-edit-changelog-full-paragraphs' decides whether an
 561 \"entry\" is a paragraph or a subparagraph; see its documentation string
 562 for more details."
 563   (if log-edit-changelog-full-paragraphs
 564       (log-edit-changelog-paragraph)
 565     (log-edit-changelog-subparagraph)))
 566
 567 (defvar user-full-name)
 568 (defvar user-mail-address)
 569 (defun log-edit-changelog-ours-p ()
 570   "See if ChangeLog entry at point is for the current user, today.
 571 Return non-nil iff it is."
 572   ;; Code adapted from add-change-log-entry.
 573   (let ((name (or (and (boundp 'add-log-full-name) add-log-full-name)
 574                   (and (fboundp 'user-full-name) (user-full-name))
 575                   (and (boundp 'user-full-name) user-full-name)))
 576         (mail (or (and (boundp 'add-log-mailing-address) add-log-mailing-address)
 577                   ;;(and (fboundp 'user-mail-address) (user-mail-address))
 578                   (and (boundp 'user-mail-address) user-mail-address)))
 579         (time (or (and (boundp 'add-log-time-format)
 580                        (functionp add-log-time-format)
 581                        (funcall add-log-time-format))
 582                   (format-time-string "%Y-%m-%d"))))
 583     (looking-at (if log-edit-changelog-use-first
 584                     "[^ \t]"
 585                   (regexp-quote (format "%s  %s  <%s>" time name mail))))))
 586
 587 (defun log-edit-changelog-entries (file)
 588   "Return the ChangeLog entries for FILE, and the ChangeLog they came from.
 589 The return value looks like this:
 590   (LOGBUFFER (ENTRYSTART . ENTRYEND) ...)
 591 where LOGBUFFER is the name of the ChangeLog buffer, and each
 592 \(ENTRYSTART . ENTRYEND\) pair is a buffer region."
 593   (let ((changelog-file-name
 594          (let ((default-directory
 595                  (file-name-directory (expand-file-name file)))
 596                (visiting-buffer (find-buffer-visiting file)))
 597            ;; If there is a buffer visiting FILE, and it has a local
 598            ;; value for `change-log-default-name', use that.
 599            (if (and visiting-buffer
 600                     (local-variable-p 'change-log-default-name
 601                                       visiting-buffer))
 602                (with-current-buffer visiting-buffer
 603                  change-log-default-name)
 604              ;; `find-change-log' uses `change-log-default-name' if set
 605              ;; and sets it before exiting, so we need to work around
 606              ;; that memoizing which is undesired here
 607              (setq change-log-default-name nil)
 608              (find-change-log)))))
 609     (with-current-buffer (find-file-noselect changelog-file-name)
 610       (unless (eq major-mode 'change-log-mode) (change-log-mode))
 611       (goto-char (point-min))
 612       (if (looking-at "\\s-*\n") (goto-char (match-end 0)))
 613       (if (not (log-edit-changelog-ours-p))
 614           (list (current-buffer))
 615         (save-restriction
 616           (log-edit-narrow-changelog)
 617           (goto-char (point-min))
 618
 619           ;; Search for the name of FILE relative to the ChangeLog.  If that
 620           ;; doesn't occur anywhere, they're not using full relative
 621           ;; filenames in the ChangeLog, so just look for FILE; we'll accept
 622           ;; some false positives.
 623           (let ((pattern (file-relative-name
 624                           file (file-name-directory changelog-file-name))))
 625             (if (or (string= pattern "")
 626                     (not (save-excursion
 627                            (search-forward pattern nil t))))
 628                 (setq pattern (file-name-nondirectory file)))
 629
 630             (setq pattern (concat "\\(^\\|[^[:alnum:]]\\)"
 631                                   pattern
 632                                   "\\($\\|[^[:alnum:]]\\)"))
 633
 634             (let (texts)
 635               (while (re-search-forward pattern nil t)
 636                 (let ((entry (log-edit-changelog-entry)))
 637                   (push entry texts)
 638                   (goto-char (elt entry 1))))
 639
 640               (cons (current-buffer) texts))))))))
 641
 642 (defun log-edit-changelog-insert-entries (buffer regions)
 643   "Insert those regions in BUFFER specified in REGIONS.
 644 Sort REGIONS front-to-back first."
 645   (let ((regions (sort regions 'car-less-than-car))
 646         (last))
 647     (dolist (region regions)
 648       (when (and last (< last (car region))) (newline))
 649       (setq last (elt region 1))
 650       (apply 'insert-buffer-substring buffer region))))
 651
 652 (defun log-edit-insert-changelog-entries (files)
 653   "Given a list of files FILES, insert the ChangeLog entries for them."
 654   (let ((buffer-entries nil))
 655
 656     ;; Add each buffer to buffer-entries, and associate it with the list
 657     ;; of entries we want from that file.
 658     (dolist (file files)
 659       (let* ((entries (log-edit-changelog-entries file))
 660              (pair (assq (car entries) buffer-entries)))
 661         (if pair
 662             (setcdr pair (cvs-union (cdr pair) (cdr entries)))
 663           (push entries buffer-entries))))
 664
 665     ;; Now map over each buffer in buffer-entries, sort the entries for
 666     ;; each buffer, and extract them as strings.
 667     (dolist (buffer-entry buffer-entries)
 668       (log-edit-changelog-insert-entries (car buffer-entry) (cdr buffer-entry))
 669       (when (cdr buffer-entry) (newline)))))
 670
 671 (provide 'log-edit)
 672
 673 ;; arch-tag: 8089b39c-983b-4e83-93cd-ed0a64c7fdcc
 674 ;;; log-edit.el ends here