lisp/nnbabyl.el

   1 ;;; nnbabyl.el --- rmail mbox access for Gnus
   2 ;; Copyright (C) 1995,96 Free Software Foundation, Inc.
   3
   4 ;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
   5 ;;      Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
   6 ;; Keywords: news, mail
   7
   8 ;; This file is part of GNU Emacs.
   9
  10 ;; GNU Emacs is free software; you can redistribute it and/or modify
  11 ;; it under the terms of the GNU General Public License as published by
  12 ;; the Free Software Foundation; either version 2, or (at your option)
  13 ;; any later version.
  14
  15 ;; GNU Emacs is distributed in the hope that it will be useful,
  16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;; GNU General Public License for more details.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  23 ;; Boston, MA 02111-1307, USA.
  24
  25 ;;; Commentary:
  26
  27 ;; For an overview of what the interface functions do, please see the
  28 ;; Gnus sources.
  29
  30 ;;; Code:
  31
  32 (require 'nnheader)
  33 (require 'rmail)
  34 (require 'nnmail)
  35 (require 'nnoo)
  36 (eval-when-compile (require 'cl))
  37
  38 (nnoo-declare nnbabyl)
  39
  40 (defvoo nnbabyl-mbox-file (expand-file-name "~/RMAIL")
  41   "The name of the rmail box file in the users home directory.")
  42
  43 (defvoo nnbabyl-active-file (expand-file-name "~/.rmail-active")
  44   "The name of the active file for the rmail box.")
  45
  46 (defvoo nnbabyl-get-new-mail t
  47   "If non-nil, nnbabyl will check the incoming mail file and split the mail.")
  48
  49 (defvoo nnbabyl-prepare-save-mail-hook nil
  50   "Hook run narrowed to an article before saving.")
  51
  52 \f
  53
  54 (defvar nnbabyl-mail-delimiter "\^_")
  55
  56 (defconst nnbabyl-version "nnbabyl 1.0"
  57   "nnbabyl version.")
  58
  59 (defvoo nnbabyl-mbox-buffer nil)
  60 (defvoo nnbabyl-current-group nil)
  61 (defvoo nnbabyl-status-string "")
  62 (defvoo nnbabyl-group-alist nil)
  63 (defvoo nnbabyl-active-timestamp nil)
  64
  65 (defvoo nnbabyl-previous-buffer-mode nil)
  66
  67 (eval-and-compile
  68   (autoload 'gnus-set-text-properties "gnus-ems"))
  69
  70 \f
  71
  72 ;;; Interface functions
  73
  74 (nnoo-define-basics nnbabyl)
  75
  76 (deffoo nnbabyl-retrieve-headers (articles &optional group server fetch-old)
  77   (save-excursion
  78     (set-buffer nntp-server-buffer)
  79     (erase-buffer)
  80     (let ((number (length articles))
  81           (count 0)
  82           (delim (concat "^" nnbabyl-mail-delimiter))
  83           article art-string start stop)
  84       (nnbabyl-possibly-change-newsgroup group server)
  85       (while (setq article (pop articles))
  86         (setq art-string (nnbabyl-article-string article))
  87         (set-buffer nnbabyl-mbox-buffer)
  88         (beginning-of-line)
  89         (when (or (search-forward art-string nil t)
  90                   (search-backward art-string nil t))
  91           (re-search-backward delim nil t)
  92           (while (and (not (looking-at ".+:"))
  93                       (zerop (forward-line 1))))
  94           (setq start (point))
  95           (search-forward "\n\n" nil t)
  96           (setq stop (1- (point)))
  97           (set-buffer nntp-server-buffer)
  98           (insert "221 ")
  99           (princ article (current-buffer))
 100           (insert " Article retrieved.\n")
 101           (insert-buffer-substring nnbabyl-mbox-buffer start stop)
 102           (goto-char (point-max))
 103           (insert ".\n"))
 104         (and (numberp nnmail-large-newsgroup)
 105              (> number nnmail-large-newsgroup)
 106              (zerop (% (incf count) 20))
 107              (nnheader-message 5 "nnbabyl: Receiving headers... %d%%"
 108                                (/ (* count 100) number))))
 109
 110       (and (numberp nnmail-large-newsgroup)
 111            (> number nnmail-large-newsgroup)
 112            (nnheader-message 5 "nnbabyl: Receiving headers...done"))
 113
 114       (set-buffer nntp-server-buffer)
 115       (nnheader-fold-continuation-lines)
 116       'headers)))
 117
 118 (deffoo nnbabyl-open-server (server &optional defs)
 119   (nnoo-change-server 'nnbabyl server defs)
 120   (cond
 121    ((not (file-exists-p nnbabyl-mbox-file))
 122     (nnbabyl-close-server)
 123     (nnheader-report 'nnbabyl "No such file: %s" nnbabyl-mbox-file))
 124    ((file-directory-p nnbabyl-mbox-file)
 125     (nnbabyl-close-server)
 126     (nnheader-report 'nnbabyl "Not a regular file: %s" nnbabyl-mbox-file))
 127    (t
 128     (nnheader-report 'nnbabyl "Opened server %s using mbox %s" server
 129                      nnbabyl-mbox-file)
 130     t)))
 131
 132 (deffoo nnbabyl-close-server (&optional server)
 133   ;; Restore buffer mode.
 134   (when (and (nnbabyl-server-opened)
 135              nnbabyl-previous-buffer-mode)
 136     (save-excursion
 137       (set-buffer nnbabyl-mbox-buffer)
 138       (narrow-to-region
 139        (caar nnbabyl-previous-buffer-mode)
 140        (cdar nnbabyl-previous-buffer-mode))
 141       (funcall (cdr nnbabyl-previous-buffer-mode))))
 142   (nnoo-close-server 'nnbabyl server)
 143   (setq nnbabyl-mbox-buffer nil)
 144   t)
 145
 146 (deffoo nnbabyl-server-opened (&optional server)
 147   (and (nnoo-current-server-p 'nnbabyl server)
 148        nnbabyl-mbox-buffer
 149        (buffer-name nnbabyl-mbox-buffer)
 150        nntp-server-buffer
 151        (buffer-name nntp-server-buffer)))
 152
 153 (deffoo nnbabyl-request-article (article &optional newsgroup server buffer)
 154   (nnbabyl-possibly-change-newsgroup newsgroup server)
 155   (save-excursion
 156     (set-buffer nnbabyl-mbox-buffer)
 157     (goto-char (point-min))
 158     (when (search-forward (nnbabyl-article-string article) nil t)
 159       (let (start stop summary-line)
 160         (re-search-backward (concat "^" nnbabyl-mail-delimiter) nil t)
 161         (while (and (not (looking-at ".+:"))
 162                     (zerop (forward-line 1))))
 163         (setq start (point))
 164         (or (and (re-search-forward
 165                   (concat "^" nnbabyl-mail-delimiter) nil t)
 166                  (forward-line -1))
 167             (goto-char (point-max)))
 168         (setq stop (point))
 169         (let ((nntp-server-buffer (or buffer nntp-server-buffer)))
 170           (set-buffer nntp-server-buffer)
 171           (erase-buffer)
 172           (insert-buffer-substring nnbabyl-mbox-buffer start stop)
 173           (goto-char (point-min))
 174           ;; If there is an EOOH header, then we have to remove some
 175           ;; duplicated headers.
 176           (setq summary-line (looking-at "Summary-line:"))
 177           (when (search-forward "\n*** EOOH ***" nil t)
 178             (if summary-line
 179                 ;; The headers to be deleted are located before the
 180                 ;; EOOH line...
 181                 (delete-region (point-min) (progn (forward-line 1)
 182                                                   (point)))
 183               ;; ...or after.
 184               (delete-region (progn (beginning-of-line) (point))
 185                              (or (search-forward "\n\n" nil t)
 186                                  (point)))))
 187           (if (numberp article)
 188               (cons nnbabyl-current-group article)
 189             (nnbabyl-article-group-number)))))))
 190
 191 (deffoo nnbabyl-request-group (group &optional server dont-check)
 192   (let ((active (cadr (assoc group nnbabyl-group-alist))))
 193     (save-excursion
 194       (cond
 195        ((or (null active)
 196             (null (nnbabyl-possibly-change-newsgroup group server)))
 197         (nnheader-report 'nnbabyl "No such group: %s" group))
 198        (dont-check
 199         (nnheader-report 'nnbabyl "Selected group %s" group)
 200         (nnheader-insert ""))
 201        (t
 202         (nnheader-report 'nnbabyl "Selected group %s" group)
 203         (nnheader-insert "211 %d %d %d %s\n"
 204                          (1+ (- (cdr active) (car active)))
 205                          (car active) (cdr active) group))))))
 206
 207 (deffoo nnbabyl-request-scan (&optional group server)
 208   (nnbabyl-read-mbox)
 209   (nnmail-get-new-mail
 210    'nnbabyl
 211    (lambda ()
 212      (save-excursion
 213        (set-buffer nnbabyl-mbox-buffer)
 214        (save-buffer)))
 215    nnbabyl-mbox-file group
 216    (lambda ()
 217      (save-excursion
 218        (let ((in-buf (current-buffer)))
 219          (goto-char (point-min))
 220          (while (search-forward "\n\^_\n" nil t)
 221            (delete-char -1))
 222          (set-buffer nnbabyl-mbox-buffer)
 223          (goto-char (point-max))
 224          (search-backward "\n\^_" nil t)
 225          (goto-char (match-end 0))
 226          (insert-buffer-substring in-buf)))
 227      (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file))))
 228
 229 (deffoo nnbabyl-close-group (group &optional server)
 230   t)
 231
 232 (deffoo nnbabyl-request-create-group (group &optional server)
 233   (nnmail-activate 'nnbabyl)
 234   (unless (assoc group nnbabyl-group-alist)
 235     (setq nnbabyl-group-alist (cons (list group (cons 1 0))
 236                                     nnbabyl-group-alist))
 237     (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file))
 238   t)
 239
 240 (deffoo nnbabyl-request-list (&optional server)
 241   (save-excursion
 242     (nnmail-find-file nnbabyl-active-file)
 243     (setq nnbabyl-group-alist (nnmail-get-active))))
 244
 245 (deffoo nnbabyl-request-newgroups (date &optional server)
 246   (nnbabyl-request-list server))
 247
 248 (deffoo nnbabyl-request-list-newsgroups (&optional server)
 249   (nnheader-report 'nnbabyl "nnbabyl: LIST NEWSGROUPS is not implemented."))
 250
 251 (deffoo nnbabyl-request-expire-articles
 252   (articles newsgroup &optional server force)
 253   (nnbabyl-possibly-change-newsgroup newsgroup server)
 254   (let* ((is-old t)
 255          rest)
 256     (nnmail-activate 'nnbabyl)
 257
 258     (save-excursion
 259       (set-buffer nnbabyl-mbox-buffer)
 260       (gnus-set-text-properties (point-min) (point-max) nil)
 261       (while (and articles is-old)
 262         (goto-char (point-min))
 263         (if (search-forward (nnbabyl-article-string (car articles)) nil t)
 264             (if (setq is-old
 265                       (nnmail-expired-article-p
 266                        newsgroup
 267                        (buffer-substring
 268                         (point) (progn (end-of-line) (point))) force))
 269                 (progn
 270                   (nnheader-message 5 "Deleting article %d in %s..."
 271                                     (car articles) newsgroup)
 272                   (nnbabyl-delete-mail))
 273               (setq rest (cons (car articles) rest))))
 274         (setq articles (cdr articles)))
 275       (save-buffer)
 276       ;; Find the lowest active article in this group.
 277       (let ((active (nth 1 (assoc newsgroup nnbabyl-group-alist))))
 278         (goto-char (point-min))
 279         (while (and (not (search-forward
 280                           (nnbabyl-article-string (car active)) nil t))
 281                     (<= (car active) (cdr active)))
 282           (setcar active (1+ (car active)))
 283           (goto-char (point-min))))
 284       (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
 285       (nconc rest articles))))
 286
 287 (deffoo nnbabyl-request-move-article
 288   (article group server accept-form &optional last)
 289   (nnbabyl-possibly-change-newsgroup group server)
 290   (let ((buf (get-buffer-create " *nnbabyl move*"))
 291         result)
 292     (and
 293      (nnbabyl-request-article article group server)
 294      (save-excursion
 295        (set-buffer buf)
 296        (insert-buffer-substring nntp-server-buffer)
 297        (goto-char (point-min))
 298        (if (re-search-forward
 299             "^X-Gnus-Newsgroup:"
 300             (save-excursion (search-forward "\n\n" nil t) (point)) t)
 301            (delete-region (progn (beginning-of-line) (point))
 302                           (progn (forward-line 1) (point))))
 303        (setq result (eval accept-form))
 304        (kill-buffer (current-buffer))
 305        result)
 306      (save-excursion
 307        (set-buffer nnbabyl-mbox-buffer)
 308        (goto-char (point-min))
 309        (if (search-forward (nnbabyl-article-string article) nil t)
 310            (nnbabyl-delete-mail))
 311        (and last (save-buffer))))
 312     result))
 313
 314 (deffoo nnbabyl-request-accept-article (group &optional server last)
 315   (nnbabyl-possibly-change-newsgroup group server)
 316   (nnmail-check-syntax)
 317   (let ((buf (current-buffer))
 318         result beg)
 319     (and
 320      (nnmail-activate 'nnbabyl)
 321      (save-excursion
 322        (goto-char (point-min))
 323        (search-forward "\n\n" nil t)
 324        (forward-line -1)
 325        (save-excursion
 326          (while (re-search-backward "^X-Gnus-Newsgroup: " beg t)
 327            (delete-region (point) (progn (forward-line 1) (point)))))
 328        (let ((nnmail-split-methods
 329               (if (stringp group) (list (list group ""))
 330                 nnmail-split-methods)))
 331          (setq result (car (nnbabyl-save-mail))))
 332        (set-buffer nnbabyl-mbox-buffer)
 333        (goto-char (point-max))
 334        (search-backward "\n\^_")
 335        (goto-char (match-end 0))
 336        (insert-buffer-substring buf)
 337        (when last
 338          (save-buffer)
 339          (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file))
 340        result))))
 341
 342 (deffoo nnbabyl-request-replace-article (article group buffer)
 343   (nnbabyl-possibly-change-newsgroup group)
 344   (save-excursion
 345     (set-buffer nnbabyl-mbox-buffer)
 346     (goto-char (point-min))
 347     (if (not (search-forward (nnbabyl-article-string article) nil t))
 348         nil
 349       (nnbabyl-delete-mail t t)
 350       (insert-buffer-substring buffer)
 351       (save-buffer)
 352       t)))
 353
 354 (deffoo nnbabyl-request-delete-group (group &optional force server)
 355   (nnbabyl-possibly-change-newsgroup group server)
 356   ;; Delete all articles in GROUP.
 357   (if (not force)
 358       ()                                ; Don't delete the articles.
 359     (save-excursion
 360       (set-buffer nnbabyl-mbox-buffer)
 361       (goto-char (point-min))
 362       ;; Delete all articles in this group.
 363       (let ((ident (concat "\nX-Gnus-Newsgroup: " nnbabyl-current-group ":"))
 364             found)
 365         (while (search-forward ident nil t)
 366           (setq found t)
 367           (nnbabyl-delete-mail))
 368         (and found (save-buffer)))))
 369   ;; Remove the group from all structures.
 370   (setq nnbabyl-group-alist
 371         (delq (assoc group nnbabyl-group-alist) nnbabyl-group-alist)
 372         nnbabyl-current-group nil)
 373   ;; Save the active file.
 374   (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
 375   t)
 376
 377 (deffoo nnbabyl-request-rename-group (group new-name &optional server)
 378   (nnbabyl-possibly-change-newsgroup group server)
 379   (save-excursion
 380     (set-buffer nnbabyl-mbox-buffer)
 381     (goto-char (point-min))
 382     (let ((ident (concat "\nX-Gnus-Newsgroup: " nnbabyl-current-group ":"))
 383           (new-ident (concat "\nX-Gnus-Newsgroup: " new-name ":"))
 384           found)
 385       (while (search-forward ident nil t)
 386         (replace-match new-ident t t)
 387         (setq found t))
 388       (and found (save-buffer))))
 389   (let ((entry (assoc group nnbabyl-group-alist)))
 390     (and entry (setcar entry new-name))
 391     (setq nnbabyl-current-group nil)
 392     ;; Save the new group alist.
 393     (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
 394     t))
 395
 396 \f
 397 ;;; Internal functions.
 398
 399 ;; If FORCE, delete article no matter how many X-Gnus-Newsgroup
 400 ;; headers there are. If LEAVE-DELIM, don't delete the Unix mbox
 401 ;; delimiter line.
 402 (defun nnbabyl-delete-mail (&optional force leave-delim)
 403   ;; Delete the current X-Gnus-Newsgroup line.
 404   (or force
 405       (delete-region
 406        (progn (beginning-of-line) (point))
 407        (progn (forward-line 1) (point))))
 408   ;; Beginning of the article.
 409   (save-excursion
 410     (save-restriction
 411       (widen)
 412       (narrow-to-region
 413        (save-excursion
 414          (re-search-backward (concat "^" nnbabyl-mail-delimiter) nil t)
 415          (if leave-delim (progn (forward-line 1) (point))
 416            (match-beginning 0)))
 417        (progn
 418          (forward-line 1)
 419          (or (and (re-search-forward (concat "^" nnbabyl-mail-delimiter)
 420                                      nil t)
 421                   (if (and (not (bobp)) leave-delim)
 422                       (progn (forward-line -2) (point))
 423                     (match-beginning 0)))
 424              (point-max))))
 425       (goto-char (point-min))
 426       ;; Only delete the article if no other groups owns it as well.
 427       (if (or force (not (re-search-forward "^X-Gnus-Newsgroup: " nil t)))
 428           (delete-region (point-min) (point-max))))))
 429
 430 (defun nnbabyl-possibly-change-newsgroup (newsgroup &optional server)
 431   (when (and server
 432              (not (nnbabyl-server-opened server)))
 433     (nnbabyl-open-server server))
 434   (if (or (not nnbabyl-mbox-buffer)
 435           (not (buffer-name nnbabyl-mbox-buffer)))
 436       (save-excursion (nnbabyl-read-mbox)))
 437   (or nnbabyl-group-alist
 438       (nnmail-activate 'nnbabyl))
 439   (if newsgroup
 440       (if (assoc newsgroup nnbabyl-group-alist)
 441           (setq nnbabyl-current-group newsgroup)
 442         (nnheader-report 'nnbabyl "No such group in file"))
 443     t))
 444
 445 (defun nnbabyl-article-string (article)
 446   (if (numberp article)
 447       (concat "\nX-Gnus-Newsgroup: " nnbabyl-current-group ":"
 448               (int-to-string article) " ")
 449     (concat "\nMessage-ID: " article)))
 450
 451 (defun nnbabyl-article-group-number ()
 452   (save-excursion
 453     (goto-char (point-min))
 454     (and (re-search-forward "^X-Gnus-Newsgroup: +\\([^:]+\\):\\([0-9]+\\) "
 455                             nil t)
 456          (cons (buffer-substring (match-beginning 1) (match-end 1))
 457                (string-to-int
 458                 (buffer-substring (match-beginning 2) (match-end 2)))))))
 459
 460 (defun nnbabyl-insert-lines ()
 461   "Insert how many lines and chars there are in the body of the mail."
 462   (let (lines chars)
 463     (save-excursion
 464       (goto-char (point-min))
 465       (when (search-forward "\n\n" nil t)
 466         ;; There may be an EOOH line here...
 467         (when (looking-at "\\*\\*\\* EOOH \\*\\*\\*")
 468           (search-forward "\n\n" nil t))
 469         (setq chars (- (point-max) (point))
 470               lines (max (- (count-lines (point) (point-max)) 1) 0))
 471         ;; Move back to the end of the headers.
 472         (goto-char (point-min))
 473         (search-forward "\n\n" nil t)
 474         (forward-char -1)
 475         (save-excursion
 476           (when (re-search-backward "^Lines: " nil t)
 477             (delete-region (point) (progn (forward-line 1) (point)))))
 478         (insert (format "Lines: %d\n" lines))
 479         chars))))
 480
 481 (defun nnbabyl-save-mail ()
 482   ;; Called narrowed to an article.
 483   (let ((group-art (nreverse (nnmail-article-group 'nnbabyl-active-number))))
 484     (nnbabyl-insert-lines)
 485     (nnmail-insert-xref group-art)
 486     (nnbabyl-insert-newsgroup-line group-art)
 487     (run-hooks 'nnbabyl-prepare-save-mail-hook)
 488     group-art))
 489
 490 (defun nnbabyl-insert-newsgroup-line (group-art)
 491   (save-excursion
 492     (goto-char (point-min))
 493     (while (looking-at "From ")
 494       (replace-match "Mail-from: From " t t)
 495       (forward-line 1))
 496     ;; If there is a C-l at the beginning of the narrowed region, this
 497     ;; isn't really a "save", but rather a "scan".
 498     (goto-char (point-min))
 499     (or (looking-at "\^L")
 500         (save-excursion
 501           (insert "\^L\n0, unseen,,\n*** EOOH ***\n")
 502           (goto-char (point-max))
 503           (insert "\^_\n")))
 504     (if (search-forward "\n\n" nil t)
 505         (progn
 506           (forward-char -1)
 507           (while group-art
 508             (insert (format "X-Gnus-Newsgroup: %s:%d   %s\n"
 509                             (caar group-art) (cdar group-art)
 510                             (current-time-string)))
 511             (setq group-art (cdr group-art)))))
 512     t))
 513
 514 (defun nnbabyl-active-number (group)
 515   ;; Find the next article number in GROUP.
 516   (let ((active (cadr (assoc group nnbabyl-group-alist))))
 517     (if active
 518         (setcdr active (1+ (cdr active)))
 519       ;; This group is new, so we create a new entry for it.
 520       ;; This might be a bit naughty... creating groups on the drop of
 521       ;; a hat, but I don't know...
 522       (setq nnbabyl-group-alist (cons (list group (setq active (cons 1 1)))
 523                                       nnbabyl-group-alist)))
 524     (cdr active)))
 525
 526 (defun nnbabyl-read-mbox ()
 527   (nnmail-activate 'nnbabyl)
 528   (unless (file-exists-p nnbabyl-mbox-file)
 529     ;; Create a new, empty RMAIL mbox file.
 530     (save-excursion
 531       (set-buffer (setq nnbabyl-mbox-buffer
 532                         (create-file-buffer nnbabyl-mbox-file)))
 533       (setq buffer-file-name nnbabyl-mbox-file)
 534       (insert "BABYL OPTIONS:\n\n\^_")
 535       (write-region (point-min) (point-max) nnbabyl-mbox-file t 'nomesg)))
 536
 537   (if (and nnbabyl-mbox-buffer
 538            (buffer-name nnbabyl-mbox-buffer)
 539            (save-excursion
 540              (set-buffer nnbabyl-mbox-buffer)
 541              (= (buffer-size) (nnheader-file-size nnbabyl-mbox-file))))
 542       () ; This buffer hasn't changed since we read it last.  Possibly.
 543     (save-excursion
 544       (let ((delim (concat "^" nnbabyl-mail-delimiter))
 545             (alist nnbabyl-group-alist)
 546             start end number)
 547         (set-buffer (setq nnbabyl-mbox-buffer
 548                           (nnheader-find-file-noselect
 549                            nnbabyl-mbox-file nil 'raw)))
 550         ;; Save previous buffer mode.
 551         (setq nnbabyl-previous-buffer-mode
 552               (cons (cons (point-min) (point-max))
 553                     major-mode))
 554
 555         (buffer-disable-undo (current-buffer))
 556         (widen)
 557         (setq buffer-read-only nil)
 558         (fundamental-mode)
 559
 560         ;; Go through the group alist and compare against
 561         ;; the rmail file.
 562         (while alist
 563           (goto-char (point-max))
 564           (when (and (re-search-backward
 565                       (format "^X-Gnus-Newsgroup: %s:\\([0-9]+\\) "
 566                               (caar alist)) nil t)
 567                      (> (setq number
 568                               (string-to-number
 569                                (buffer-substring
 570                                 (match-beginning 1) (match-end 1))))
 571                         (cdadar alist)))
 572             (setcdr (cadar alist) (1+ number)))
 573           (setq alist (cdr alist)))
 574
 575         ;; We go through the mbox and make sure that each and
 576         ;; every mail belongs to some group or other.
 577         (goto-char (point-min))
 578         (re-search-forward delim nil t)
 579         (setq start (match-end 0))
 580         (while (re-search-forward delim nil t)
 581           (setq end (match-end 0))
 582           (unless (search-backward "\nX-Gnus-Newsgroup: " start t)
 583             (goto-char end)
 584             (save-excursion
 585               (save-restriction
 586                 (narrow-to-region (goto-char start) end)
 587                 (nnbabyl-save-mail)
 588                 (setq end (point-max)))))
 589           (goto-char (setq start end)))
 590         (when (buffer-modified-p (current-buffer))
 591           (save-buffer))
 592         (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)))))
 593
 594 (defun nnbabyl-remove-incoming-delims ()
 595   (goto-char (point-min))
 596   (while (search-forward "\^_" nil t)
 597     (replace-match "?" t t)))
 598
 599 (defun nnbabyl-check-mbox ()
 600   "Go through the nnbabyl mbox and make sure that no article numbers are reused."
 601   (interactive)
 602   (let ((idents (make-vector 1000 0))
 603         id)
 604     (save-excursion
 605       (when (or (not nnbabyl-mbox-buffer)
 606                 (not (buffer-name nnbabyl-mbox-buffer)))
 607         (nnbabyl-read-mbox))
 608       (set-buffer nnbabyl-mbox-buffer)
 609       (goto-char (point-min))
 610       (while (re-search-forward "^X-Gnus-Newsgroup: \\([^ ]+\\) "  nil t)
 611         (if (intern-soft (setq id (match-string 1)) idents)
 612             (progn
 613               (delete-region (progn (beginning-of-line) (point))
 614                              (progn (forward-line 1) (point)))
 615               (nnheader-message 7 "Moving %s..." id)
 616               (nnbabyl-save-mail))
 617           (intern id idents)))
 618       (when (buffer-modified-p (current-buffer))
 619         (save-buffer))
 620       (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
 621       (message ""))))
 622
 623 (provide 'nnbabyl)
 624
 625 ;;; nnbabyl.el ends here