lisp/gnus/nnbabyl.el

   1 ;;; nnbabyl.el --- rmail mbox access for Gnus
   2 ;; Copyright (C) 1995,96,97,98 Free Software Foundation, Inc.
   3
   4 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
   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 (condition-case nil
  34     (require 'rmail)
  35   (t (nnheader-message 5 "Ignore rmail errors from this file, you don't have rmail")))
  36 (require 'nnmail)
  37 (require 'nnoo)
  38 (eval-when-compile (require 'cl))
  39
  40 (nnoo-declare nnbabyl)
  41
  42 (defvoo nnbabyl-mbox-file (expand-file-name "~/RMAIL")
  43   "The name of the rmail box file in the users home directory.")
  44
  45 (defvoo nnbabyl-active-file (expand-file-name "~/.rmail-active")
  46   "The name of the active file for the rmail box.")
  47
  48 (defvoo nnbabyl-get-new-mail t
  49   "If non-nil, nnbabyl will check the incoming mail file and split the mail.")
  50
  51 (defvoo nnbabyl-prepare-save-mail-hook nil
  52   "Hook run narrowed to an article before saving.")
  53
  54 \f
  55
  56 (defvar nnbabyl-mail-delimiter "\^_")
  57
  58 (defconst nnbabyl-version "nnbabyl 1.0"
  59   "nnbabyl version.")
  60
  61 (defvoo nnbabyl-mbox-buffer nil)
  62 (defvoo nnbabyl-current-group nil)
  63 (defvoo nnbabyl-status-string "")
  64 (defvoo nnbabyl-group-alist nil)
  65 (defvoo nnbabyl-active-timestamp nil)
  66
  67 (defvoo nnbabyl-previous-buffer-mode nil)
  68
  69 (eval-and-compile
  70   (autoload 'gnus-set-text-properties "gnus-ems"))
  71
  72 \f
  73
  74 ;;; Interface functions
  75
  76 (nnoo-define-basics nnbabyl)
  77
  78 (deffoo nnbabyl-retrieve-headers (articles &optional group server fetch-old)
  79   (save-excursion
  80     (set-buffer nntp-server-buffer)
  81     (erase-buffer)
  82     (let ((number (length articles))
  83           (count 0)
  84           (delim (concat "^" nnbabyl-mail-delimiter))
  85           article art-string start stop)
  86       (nnbabyl-possibly-change-newsgroup group server)
  87       (while (setq article (pop articles))
  88         (setq art-string (nnbabyl-article-string article))
  89         (set-buffer nnbabyl-mbox-buffer)
  90         (end-of-line)
  91         (when (or (search-forward art-string nil t)
  92                   (search-backward art-string nil t))
  93           (unless (re-search-backward delim nil t)
  94             (goto-char (point-min)))
  95           (while (and (not (looking-at ".+:"))
  96                       (zerop (forward-line 1))))
  97           (setq start (point))
  98           (search-forward "\n\n" nil t)
  99           (setq stop (1- (point)))
 100           (set-buffer nntp-server-buffer)
 101           (insert "221 ")
 102           (princ article (current-buffer))
 103           (insert " Article retrieved.\n")
 104           (insert-buffer-substring nnbabyl-mbox-buffer start stop)
 105           (goto-char (point-max))
 106           (insert ".\n"))
 107         (and (numberp nnmail-large-newsgroup)
 108              (> number nnmail-large-newsgroup)
 109              (zerop (% (incf count) 20))
 110              (nnheader-message 5 "nnbabyl: Receiving headers... %d%%"
 111                                (/ (* count 100) number))))
 112
 113       (and (numberp nnmail-large-newsgroup)
 114            (> number nnmail-large-newsgroup)
 115            (nnheader-message 5 "nnbabyl: Receiving headers...done"))
 116
 117       (set-buffer nntp-server-buffer)
 118       (nnheader-fold-continuation-lines)
 119       'headers)))
 120
 121 (deffoo nnbabyl-open-server (server &optional defs)
 122   (nnoo-change-server 'nnbabyl server defs)
 123   (nnbabyl-create-mbox)
 124   (cond
 125    ((not (file-exists-p nnbabyl-mbox-file))
 126     (nnbabyl-close-server)
 127     (nnheader-report 'nnbabyl "No such file: %s" nnbabyl-mbox-file))
 128    ((file-directory-p nnbabyl-mbox-file)
 129     (nnbabyl-close-server)
 130     (nnheader-report 'nnbabyl "Not a regular file: %s" nnbabyl-mbox-file))
 131    (t
 132     (nnheader-report 'nnbabyl "Opened server %s using mbox %s" server
 133                      nnbabyl-mbox-file)
 134     t)))
 135
 136 (deffoo nnbabyl-close-server (&optional server)
 137   ;; Restore buffer mode.
 138   (when (and (nnbabyl-server-opened)
 139              nnbabyl-previous-buffer-mode)
 140     (save-excursion
 141       (set-buffer nnbabyl-mbox-buffer)
 142       (narrow-to-region
 143        (caar nnbabyl-previous-buffer-mode)
 144        (cdar nnbabyl-previous-buffer-mode))
 145       (funcall (cdr nnbabyl-previous-buffer-mode))))
 146   (nnoo-close-server 'nnbabyl server)
 147   (setq nnbabyl-mbox-buffer nil)
 148   t)
 149
 150 (deffoo nnbabyl-server-opened (&optional server)
 151   (and (nnoo-current-server-p 'nnbabyl server)
 152        nnbabyl-mbox-buffer
 153        (buffer-name nnbabyl-mbox-buffer)
 154        nntp-server-buffer
 155        (buffer-name nntp-server-buffer)))
 156
 157 (deffoo nnbabyl-request-article (article &optional newsgroup server buffer)
 158   (nnbabyl-possibly-change-newsgroup newsgroup server)
 159   (save-excursion
 160     (set-buffer nnbabyl-mbox-buffer)
 161     (goto-char (point-min))
 162     (when (search-forward (nnbabyl-article-string article) nil t)
 163       (let (start stop summary-line)
 164         (unless (re-search-backward (concat "^" nnbabyl-mail-delimiter) nil t)
 165           (goto-char (point-min))
 166           (end-of-line))
 167         (while (and (not (looking-at ".+:"))
 168                     (zerop (forward-line 1))))
 169         (setq start (point))
 170         (or (when (re-search-forward
 171                    (concat "^" nnbabyl-mail-delimiter) nil t)
 172               (beginning-of-line)
 173               t)
 174             (goto-char (point-max)))
 175         (setq stop (point))
 176         (let ((nntp-server-buffer (or buffer nntp-server-buffer)))
 177           (set-buffer nntp-server-buffer)
 178           (erase-buffer)
 179           (insert-buffer-substring nnbabyl-mbox-buffer start stop)
 180           (goto-char (point-min))
 181           ;; If there is an EOOH header, then we have to remove some
 182           ;; duplicated headers.
 183           (setq summary-line (looking-at "Summary-line:"))
 184           (when (search-forward "\n*** EOOH ***" nil t)
 185             (if summary-line
 186                 ;; The headers to be deleted are located before the
 187                 ;; EOOH line...
 188                 (delete-region (point-min) (progn (forward-line 1)
 189                                                   (point)))
 190               ;; ...or after.
 191               (delete-region (progn (beginning-of-line) (point))
 192                              (or (search-forward "\n\n" nil t)
 193                                  (point)))))
 194           (if (numberp article)
 195               (cons nnbabyl-current-group article)
 196             (nnbabyl-article-group-number)))))))
 197
 198 (deffoo nnbabyl-request-group (group &optional server dont-check)
 199   (let ((active (cadr (assoc group nnbabyl-group-alist))))
 200     (save-excursion
 201       (cond
 202        ((or (null active)
 203             (null (nnbabyl-possibly-change-newsgroup group server)))
 204         (nnheader-report 'nnbabyl "No such group: %s" group))
 205        (dont-check
 206         (nnheader-report 'nnbabyl "Selected group %s" group)
 207         (nnheader-insert ""))
 208        (t
 209         (nnheader-report 'nnbabyl "Selected group %s" group)
 210         (nnheader-insert "211 %d %d %d %s\n"
 211                          (1+ (- (cdr active) (car active)))
 212                          (car active) (cdr active) group))))))
 213
 214 (deffoo nnbabyl-request-scan (&optional group server)
 215   (nnbabyl-possibly-change-newsgroup group server)
 216   (nnbabyl-read-mbox)
 217   (nnmail-get-new-mail
 218    'nnbabyl
 219    (lambda ()
 220      (save-excursion
 221        (set-buffer nnbabyl-mbox-buffer)
 222        (save-buffer)))
 223    (file-name-directory nnbabyl-mbox-file)
 224    group
 225    (lambda ()
 226      (save-excursion
 227        (let ((in-buf (current-buffer)))
 228          (goto-char (point-min))
 229          (while (search-forward "\n\^_\n" nil t)
 230            (delete-char -1))
 231          (set-buffer nnbabyl-mbox-buffer)
 232          (goto-char (point-max))
 233          (search-backward "\n\^_" nil t)
 234          (goto-char (match-end 0))
 235          (insert-buffer-substring in-buf)))
 236      (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file))))
 237
 238 (deffoo nnbabyl-close-group (group &optional server)
 239   t)
 240
 241 (deffoo nnbabyl-request-create-group (group &optional server args)
 242   (nnmail-activate 'nnbabyl)
 243   (unless (assoc group nnbabyl-group-alist)
 244     (push (list group (cons 1 0))
 245           nnbabyl-group-alist)
 246     (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file))
 247   t)
 248
 249 (deffoo nnbabyl-request-list (&optional server)
 250   (save-excursion
 251     (nnmail-find-file nnbabyl-active-file)
 252     (setq nnbabyl-group-alist (nnmail-get-active))
 253     t))
 254
 255 (deffoo nnbabyl-request-newgroups (date &optional server)
 256   (nnbabyl-request-list server))
 257
 258 (deffoo nnbabyl-request-list-newsgroups (&optional server)
 259   (nnheader-report 'nnbabyl "nnbabyl: LIST NEWSGROUPS is not implemented."))
 260
 261 (deffoo nnbabyl-request-expire-articles
 262   (articles newsgroup &optional server force)
 263   (nnbabyl-possibly-change-newsgroup newsgroup server)
 264   (let* ((is-old t)
 265          rest)
 266     (nnmail-activate 'nnbabyl)
 267
 268     (save-excursion
 269       (set-buffer nnbabyl-mbox-buffer)
 270       (gnus-set-text-properties (point-min) (point-max) nil)
 271       (while (and articles is-old)
 272         (goto-char (point-min))
 273         (when (search-forward (nnbabyl-article-string (car articles)) nil t)
 274           (if (setq is-old
 275                     (nnmail-expired-article-p
 276                      newsgroup
 277                      (buffer-substring
 278                       (point) (progn (end-of-line) (point))) force))
 279               (progn
 280                 (nnheader-message 5 "Deleting article %d in %s..."
 281                                   (car articles) newsgroup)
 282                 (nnbabyl-delete-mail))
 283             (push (car articles) rest)))
 284         (setq articles (cdr articles)))
 285       (save-buffer)
 286       ;; Find the lowest active article in this group.
 287       (let ((active (nth 1 (assoc newsgroup nnbabyl-group-alist))))
 288         (goto-char (point-min))
 289         (while (and (not (search-forward
 290                           (nnbabyl-article-string (car active)) nil t))
 291                     (<= (car active) (cdr active)))
 292           (setcar active (1+ (car active)))
 293           (goto-char (point-min))))
 294       (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
 295       (nconc rest articles))))
 296
 297 (deffoo nnbabyl-request-move-article
 298   (article group server accept-form &optional last)
 299   (let ((buf (get-buffer-create " *nnbabyl move*"))
 300         result)
 301     (and
 302      (nnbabyl-request-article article group server)
 303      (save-excursion
 304        (set-buffer buf)
 305        (insert-buffer-substring nntp-server-buffer)
 306        (goto-char (point-min))
 307        (while (re-search-forward
 308                "^X-Gnus-Newsgroup:"
 309                (save-excursion (search-forward "\n\n" nil t) (point)) t)
 310          (delete-region (progn (beginning-of-line) (point))
 311                         (progn (forward-line 1) (point))))
 312        (setq result (eval accept-form))
 313        (kill-buffer (current-buffer))
 314        result)
 315      (save-excursion
 316        (nnbabyl-possibly-change-newsgroup group server)
 317        (set-buffer nnbabyl-mbox-buffer)
 318        (goto-char (point-min))
 319        (if (search-forward (nnbabyl-article-string article) nil t)
 320            (nnbabyl-delete-mail))
 321        (and last (save-buffer))))
 322     result))
 323
 324 (deffoo nnbabyl-request-accept-article (group &optional server last)
 325   (nnbabyl-possibly-change-newsgroup group server)
 326   (nnmail-check-syntax)
 327   (let ((buf (current-buffer))
 328         result beg)
 329     (and
 330      (nnmail-activate 'nnbabyl)
 331      (save-excursion
 332        (goto-char (point-min))
 333        (search-forward "\n\n" nil t)
 334        (forward-line -1)
 335        (save-excursion
 336          (while (re-search-backward "^X-Gnus-Newsgroup: " beg t)
 337            (delete-region (point) (progn (forward-line 1) (point)))))
 338        (when nnmail-cache-accepted-message-ids
 339          (nnmail-cache-insert (nnmail-fetch-field "message-id")))
 340        (setq result
 341              (if (stringp group)
 342                  (list (cons group (nnbabyl-active-number group)))
 343                (nnmail-article-group 'nnbabyl-active-number)))
 344        (if (and (null result)
 345                 (yes-or-no-p "Moved to `junk' group; delete article? "))
 346            (setq result 'junk)
 347          (setq result (car (nnbabyl-save-mail result))))
 348        (set-buffer nnbabyl-mbox-buffer)
 349        (goto-char (point-max))
 350        (search-backward "\n\^_")
 351        (goto-char (match-end 0))
 352        (insert-buffer-substring buf)
 353        (when last
 354          (when nnmail-cache-accepted-message-ids
 355            (nnmail-cache-insert (nnmail-fetch-field "message-id")))
 356          (save-buffer)
 357          (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file))
 358        result))))
 359
 360 (deffoo nnbabyl-request-replace-article (article group buffer)
 361   (nnbabyl-possibly-change-newsgroup group)
 362   (save-excursion
 363     (set-buffer nnbabyl-mbox-buffer)
 364     (goto-char (point-min))
 365     (if (not (search-forward (nnbabyl-article-string article) nil t))
 366         nil
 367       (nnbabyl-delete-mail t t)
 368       (insert-buffer-substring buffer)
 369       (save-buffer)
 370       t)))
 371
 372 (deffoo nnbabyl-request-delete-group (group &optional force server)
 373   (nnbabyl-possibly-change-newsgroup group server)
 374   ;; Delete all articles in GROUP.
 375   (if (not force)
 376       ()                                ; Don't delete the articles.
 377     (save-excursion
 378       (set-buffer nnbabyl-mbox-buffer)
 379       (goto-char (point-min))
 380       ;; Delete all articles in this group.
 381       (let ((ident (concat "\nX-Gnus-Newsgroup: " nnbabyl-current-group ":"))
 382             found)
 383         (while (search-forward ident nil t)
 384           (setq found t)
 385           (nnbabyl-delete-mail))
 386         (when found
 387           (save-buffer)))))
 388   ;; Remove the group from all structures.
 389   (setq nnbabyl-group-alist
 390         (delq (assoc group nnbabyl-group-alist) nnbabyl-group-alist)
 391         nnbabyl-current-group nil)
 392   ;; Save the active file.
 393   (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
 394   t)
 395
 396 (deffoo nnbabyl-request-rename-group (group new-name &optional server)
 397   (nnbabyl-possibly-change-newsgroup group server)
 398   (save-excursion
 399     (set-buffer nnbabyl-mbox-buffer)
 400     (goto-char (point-min))
 401     (let ((ident (concat "\nX-Gnus-Newsgroup: " nnbabyl-current-group ":"))
 402           (new-ident (concat "\nX-Gnus-Newsgroup: " new-name ":"))
 403           found)
 404       (while (search-forward ident nil t)
 405         (replace-match new-ident t t)
 406         (setq found t))
 407       (when found
 408         (save-buffer))))
 409   (let ((entry (assoc group nnbabyl-group-alist)))
 410     (and entry (setcar entry new-name))
 411     (setq nnbabyl-current-group nil)
 412     ;; Save the new group alist.
 413     (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
 414     t))
 415
 416 \f
 417 ;;; Internal functions.
 418
 419 ;; If FORCE, delete article no matter how many X-Gnus-Newsgroup
 420 ;; headers there are.  If LEAVE-DELIM, don't delete the Unix mbox
 421 ;; delimiter line.
 422 (defun nnbabyl-delete-mail (&optional force leave-delim)
 423   ;; Delete the current X-Gnus-Newsgroup line.
 424   (unless force
 425     (delete-region
 426      (progn (beginning-of-line) (point))
 427      (progn (forward-line 1) (point))))
 428   ;; Beginning of the article.
 429   (save-excursion
 430     (save-restriction
 431       (widen)
 432       (narrow-to-region
 433        (save-excursion
 434         (unless (re-search-backward (concat "^" nnbabyl-mail-delimiter) nil t)
 435           (goto-char (point-min))
 436           (end-of-line))
 437          (if leave-delim (progn (forward-line 1) (point))
 438            (match-beginning 0)))
 439        (progn
 440          (forward-line 1)
 441          (or (and (re-search-forward (concat "^" nnbabyl-mail-delimiter)
 442                                      nil t)
 443                   (match-beginning 0))
 444              (point-max))))
 445       (goto-char (point-min))
 446       ;; Only delete the article if no other groups owns it as well.
 447       (when (or force (not (re-search-forward "^X-Gnus-Newsgroup: " nil t)))
 448         (delete-region (point-min) (point-max))))))
 449
 450 (defun nnbabyl-possibly-change-newsgroup (newsgroup &optional server)
 451   (when (and server
 452              (not (nnbabyl-server-opened server)))
 453     (nnbabyl-open-server server))
 454   (when (or (not nnbabyl-mbox-buffer)
 455             (not (buffer-name nnbabyl-mbox-buffer)))
 456     (save-excursion (nnbabyl-read-mbox)))
 457   (unless nnbabyl-group-alist
 458     (nnmail-activate 'nnbabyl))
 459   (if newsgroup
 460       (if (assoc newsgroup nnbabyl-group-alist)
 461           (setq nnbabyl-current-group newsgroup)
 462         (nnheader-report 'nnbabyl "No such group in file"))
 463     t))
 464
 465 (defun nnbabyl-article-string (article)
 466   (if (numberp article)
 467       (concat "\nX-Gnus-Newsgroup: " nnbabyl-current-group ":"
 468               (int-to-string article) " ")
 469     (concat "\nMessage-ID: " article)))
 470
 471 (defun nnbabyl-article-group-number ()
 472   (save-excursion
 473     (goto-char (point-min))
 474     (when (re-search-forward "^X-Gnus-Newsgroup: +\\([^:]+\\):\\([0-9]+\\) "
 475                              nil t)
 476       (cons (buffer-substring (match-beginning 1) (match-end 1))
 477             (string-to-int
 478              (buffer-substring (match-beginning 2) (match-end 2)))))))
 479
 480 (defun nnbabyl-insert-lines ()
 481   "Insert how many lines and chars there are in the body of the mail."
 482   (let (lines chars)
 483     (save-excursion
 484       (goto-char (point-min))
 485       (when (search-forward "\n\n" nil t)
 486         ;; There may be an EOOH line here...
 487         (when (looking-at "\\*\\*\\* EOOH \\*\\*\\*")
 488           (search-forward "\n\n" nil t))
 489         (setq chars (- (point-max) (point))
 490               lines (max (- (count-lines (point) (point-max)) 1) 0))
 491         ;; Move back to the end of the headers.
 492         (goto-char (point-min))
 493         (search-forward "\n\n" nil t)
 494         (forward-char -1)
 495         (save-excursion
 496           (when (re-search-backward "^Lines: " nil t)
 497             (delete-region (point) (progn (forward-line 1) (point)))))
 498         (insert (format "Lines: %d\n" lines))
 499         chars))))
 500
 501 (defun nnbabyl-save-mail (group-art)
 502   ;; Called narrowed to an article.
 503   (nnbabyl-insert-lines)
 504   (nnmail-insert-xref group-art)
 505   (nnbabyl-insert-newsgroup-line group-art)
 506   (run-hooks 'nnbabyl-prepare-save-mail-hook)
 507   group-art)
 508
 509 (defun nnbabyl-insert-newsgroup-line (group-art)
 510   (save-excursion
 511     (goto-char (point-min))
 512     (while (looking-at "From ")
 513       (replace-match "Mail-from: From " t t)
 514       (forward-line 1))
 515     ;; If there is a C-l at the beginning of the narrowed region, this
 516     ;; isn't really a "save", but rather a "scan".
 517     (goto-char (point-min))
 518     (unless (looking-at "\^L")
 519       (save-excursion
 520         (insert "\^L\n0, unseen,,\n*** EOOH ***\n")
 521         (goto-char (point-max))
 522         (insert "\^_\n")))
 523     (when (search-forward "\n\n" nil t)
 524       (forward-char -1)
 525       (while group-art
 526         (insert (format "X-Gnus-Newsgroup: %s:%d   %s\n"
 527                         (caar group-art) (cdar group-art)
 528                         (current-time-string)))
 529         (setq group-art (cdr group-art))))
 530     t))
 531
 532 (defun nnbabyl-active-number (group)
 533   ;; Find the next article number in GROUP.
 534   (let ((active (cadr (assoc group nnbabyl-group-alist))))
 535     (if active
 536         (setcdr active (1+ (cdr active)))
 537       ;; This group is new, so we create a new entry for it.
 538       ;; This might be a bit naughty... creating groups on the drop of
 539       ;; a hat, but I don't know...
 540       (push (list group (setq active (cons 1 1)))
 541             nnbabyl-group-alist))
 542     (cdr active)))
 543
 544 (defun nnbabyl-create-mbox ()
 545   (unless (file-exists-p nnbabyl-mbox-file)
 546     ;; Create a new, empty RMAIL mbox file.
 547     (save-excursion
 548       (set-buffer (setq nnbabyl-mbox-buffer
 549                         (create-file-buffer nnbabyl-mbox-file)))
 550       (setq buffer-file-name nnbabyl-mbox-file)
 551       (insert "BABYL OPTIONS:\n\n\^_")
 552       (nnmail-write-region
 553        (point-min) (point-max) nnbabyl-mbox-file t 'nomesg))))
 554
 555 (defun nnbabyl-read-mbox ()
 556   (nnmail-activate 'nnbabyl)
 557   (nnbabyl-create-mbox)
 558
 559   (unless (and nnbabyl-mbox-buffer
 560            (buffer-name nnbabyl-mbox-buffer)
 561            (save-excursion
 562              (set-buffer nnbabyl-mbox-buffer)
 563              (= (buffer-size) (nnheader-file-size nnbabyl-mbox-file))))
 564     ;; This buffer has changed since we read it last.  Possibly.
 565     (save-excursion
 566       (let ((delim (concat "^" nnbabyl-mail-delimiter))
 567             (alist nnbabyl-group-alist)
 568             start end number)
 569         (set-buffer (setq nnbabyl-mbox-buffer
 570                           (nnheader-find-file-noselect
 571                            nnbabyl-mbox-file nil 'raw)))
 572         ;; Save previous buffer mode.
 573         (setq nnbabyl-previous-buffer-mode
 574               (cons (cons (point-min) (point-max))
 575                     major-mode))
 576
 577         (buffer-disable-undo (current-buffer))
 578         (widen)
 579         (setq buffer-read-only nil)
 580         (fundamental-mode)
 581
 582         ;; Go through the group alist and compare against
 583         ;; the rmail file.
 584         (while alist
 585           (goto-char (point-max))
 586           (when (and (re-search-backward
 587                       (format "^X-Gnus-Newsgroup: %s:\\([0-9]+\\) "
 588                               (caar alist))
 589                       nil t)
 590                      (> (setq number
 591                               (string-to-number
 592                                (buffer-substring
 593                                 (match-beginning 1) (match-end 1))))
 594                         (cdadar alist)))
 595             (setcdr (cadar alist) number))
 596           (setq alist (cdr alist)))
 597
 598         ;; We go through the mbox and make sure that each and
 599         ;; every mail belongs to some group or other.
 600         (goto-char (point-min))
 601         (if (looking-at "\^L")
 602             (setq start (point))
 603           (re-search-forward delim nil t)
 604           (setq start (match-end 0)))
 605         (while (re-search-forward delim nil t)
 606           (setq end (match-end 0))
 607           (unless (search-backward "\nX-Gnus-Newsgroup: " start t)
 608             (goto-char end)
 609             (save-excursion
 610               (save-restriction
 611                 (narrow-to-region (goto-char start) end)
 612                 (nnbabyl-save-mail
 613                  (nnmail-article-group 'nnbabyl-active-number))
 614                 (setq end (point-max)))))
 615           (goto-char (setq start end)))
 616         (when (buffer-modified-p (current-buffer))
 617           (save-buffer))
 618         (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)))))
 619
 620 (defun nnbabyl-remove-incoming-delims ()
 621   (goto-char (point-min))
 622   (while (search-forward "\^_" nil t)
 623     (replace-match "?" t t)))
 624
 625 (defun nnbabyl-check-mbox ()
 626   "Go through the nnbabyl mbox and make sure that no article numbers are reused."
 627   (interactive)
 628   (let ((idents (make-vector 1000 0))
 629         id)
 630     (save-excursion
 631       (when (or (not nnbabyl-mbox-buffer)
 632                 (not (buffer-name nnbabyl-mbox-buffer)))
 633         (nnbabyl-read-mbox))
 634       (set-buffer nnbabyl-mbox-buffer)
 635       (goto-char (point-min))
 636       (while (re-search-forward "^X-Gnus-Newsgroup: \\([^ ]+\\) "  nil t)
 637         (if (intern-soft (setq id (match-string 1)) idents)
 638             (progn
 639               (delete-region (progn (beginning-of-line) (point))
 640                              (progn (forward-line 1) (point)))
 641               (nnheader-message 7 "Moving %s..." id)
 642               (nnbabyl-save-mail
 643                (nnmail-article-group 'nnbabyl-active-number)))
 644           (intern id idents)))
 645       (when (buffer-modified-p (current-buffer))
 646         (save-buffer))
 647       (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
 648       (nnheader-message 5 ""))))
 649
 650 (provide 'nnbabyl)
 651
 652 ;;; nnbabyl.el ends here