1;;; nnmbox.el --- mail mbox access for Gnus 2 3;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 4;; 2004, 2005, 2006, 2007 Free Software Foundation, Inc. 5 6;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org> 7;; Masanobu UMEDA <umerin@flab.flab.fujitsu.junet> 8;; Keywords: news, mail 9 10;; This file is part of GNU Emacs. 11 12;; GNU Emacs is free software; you can redistribute it and/or modify 13;; it under the terms of the GNU General Public License as published by 14;; the Free Software Foundation; either version 2, or (at your option) 15;; any later version. 16 17;; You should have received a copy of the GNU General Public License 18;; along with GNU Emacs; see the file COPYING. If not, write to the 19;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 20;; Boston, MA 02110-1301, USA. 21 22;;; Commentary: 23 24;; For an overview of what the interface functions do, please see the 25;; Gnus sources. 26 27;;; Code: 28 29(require 'nnheader) 30(require 'message) 31(require 'nnmail) 32(require 'nnoo) 33(require 'gnus-range) 34(eval-when-compile (require 'cl)) 35 36(nnoo-declare nnmbox) 37 38(defvoo nnmbox-mbox-file (expand-file-name "~/mbox") 39 "The name of the mail box file in the user's home directory.") 40 41(defvoo nnmbox-active-file (expand-file-name "~/.mbox-active") 42 "The name of the active file for the mail box.") 43 44(defvoo nnmbox-get-new-mail t 45 "If non-nil, nnmbox will check the incoming mail file and split the mail.") 46 47(defvoo nnmbox-prepare-save-mail-hook nil 48 "Hook run narrowed to an article before saving.") 49 50 51 52(defconst nnmbox-version "nnmbox 1.0" 53 "nnmbox version.") 54 55(defvoo nnmbox-current-group nil 56 "Current nnmbox news group directory.") 57 58(defvar nnmbox-mbox-buffer nil) 59 60(defvoo nnmbox-status-string "") 61 62(defvoo nnmbox-group-alist nil) 63(defvoo nnmbox-active-timestamp nil) 64 65(defvoo nnmbox-file-coding-system mm-binary-coding-system) 66(defvoo nnmbox-file-coding-system-for-write nil) 67(defvoo nnmbox-active-file-coding-system mm-binary-coding-system) 68(defvoo nnmbox-active-file-coding-system-for-write nil) 69 70(defvar nnmbox-group-building-active-articles nil) 71(defvar nnmbox-group-active-articles nil) 72 73 74;;; Interface functions 75 76(nnoo-define-basics nnmbox) 77 78(deffoo nnmbox-retrieve-headers (sequence &optional newsgroup server fetch-old) 79 (save-excursion 80 (set-buffer nntp-server-buffer) 81 (erase-buffer) 82 (let ((number (length sequence)) 83 (count 0) 84 article start stop) 85 (nnmbox-possibly-change-newsgroup newsgroup server) 86 (while sequence 87 (setq article (car sequence)) 88 (set-buffer nnmbox-mbox-buffer) 89 (when (nnmbox-find-article article) 90 (setq start 91 (save-excursion 92 (re-search-backward 93 (concat "^" message-unix-mail-delimiter) nil t) 94 (point))) 95 (search-forward "\n\n" nil t) 96 (setq stop (1- (point))) 97 (set-buffer nntp-server-buffer) 98 (insert (format "221 %d Article retrieved.\n" article)) 99 (insert-buffer-substring nnmbox-mbox-buffer start stop) 100 (goto-char (point-max)) 101 (insert ".\n")) 102 (setq sequence (cdr sequence)) 103 (setq count (1+ count)) 104 (and (numberp nnmail-large-newsgroup) 105 (> number nnmail-large-newsgroup) 106 (zerop (% count 20)) 107 (nnheader-message 5 "nnmbox: Receiving headers... %d%%" 108 (/ (* count 100) number)))) 109 110 (and (numberp nnmail-large-newsgroup) 111 (> number nnmail-large-newsgroup) 112 (nnheader-message 5 "nnmbox: Receiving headers...done")) 113 114 (set-buffer nntp-server-buffer) 115 (nnheader-fold-continuation-lines) 116 'headers))) 117 118(deffoo nnmbox-open-server (server &optional defs) 119 (nnoo-change-server 'nnmbox server defs) 120 (nnmbox-create-mbox) 121 (cond 122 ((not (file-exists-p nnmbox-mbox-file)) 123 (nnmbox-close-server) 124 (nnheader-report 'nnmbox "No such file: %s" nnmbox-mbox-file)) 125 ((file-directory-p nnmbox-mbox-file) 126 (nnmbox-close-server) 127 (nnheader-report 'nnmbox "Not a regular file: %s" nnmbox-mbox-file)) 128 (t 129 (nnheader-report 'nnmbox "Opened server %s using mbox %s" server 130 nnmbox-mbox-file) 131 t))) 132 133(deffoo nnmbox-close-server (&optional server) 134 (when (and nnmbox-mbox-buffer 135 (buffer-name nnmbox-mbox-buffer)) 136 (kill-buffer nnmbox-mbox-buffer)) 137 (nnoo-close-server 'nnmbox server) 138 t) 139 140(deffoo nnmbox-server-opened (&optional server) 141 (and (nnoo-current-server-p 'nnmbox server) 142 nnmbox-mbox-buffer 143 (buffer-name nnmbox-mbox-buffer) 144 nntp-server-buffer 145 (buffer-name nntp-server-buffer))) 146 147(deffoo nnmbox-request-article (article &optional newsgroup server buffer) 148 (nnmbox-possibly-change-newsgroup newsgroup server) 149 (save-excursion 150 (set-buffer nnmbox-mbox-buffer) 151 (when (nnmbox-find-article article) 152 (let (start stop) 153 (re-search-backward (concat "^" message-unix-mail-delimiter) nil t) 154 (setq start (point)) 155 (forward-line 1) 156 (or (and (re-search-forward 157 (concat "^" message-unix-mail-delimiter) nil t) 158 (forward-line -1)) 159 (goto-char (point-max))) 160 (setq stop (point)) 161 (let ((nntp-server-buffer (or buffer nntp-server-buffer))) 162 (set-buffer nntp-server-buffer) 163 (erase-buffer) 164 (insert-buffer-substring nnmbox-mbox-buffer start stop) 165 (goto-char (point-min)) 166 (while (looking-at "From ") 167 (delete-char 5) 168 (insert "X-From-Line: ") 169 (forward-line 1)) 170 (if (numberp article) 171 (cons nnmbox-current-group article) 172 (nnmbox-article-group-number nil))))))) 173 174(deffoo nnmbox-request-group (group &optional server dont-check) 175 (nnmbox-possibly-change-newsgroup nil server) 176 (let ((active (cadr (assoc group nnmbox-group-alist)))) 177 (cond 178 ((or (null active) 179 (null (nnmbox-possibly-change-newsgroup group server))) 180 (nnheader-report 'nnmbox "No such group: %s" group)) 181 (dont-check 182 (nnheader-report 'nnmbox "Selected group %s" group) 183 (nnheader-insert "")) 184 (t 185 (nnheader-report 'nnmbox "Selected group %s" group) 186 (nnheader-insert "211 %d %d %d %s\n" 187 (1+ (- (cdr active) (car active))) 188 (car active) (cdr active) group))))) 189 190(defun nnmbox-save-buffer () 191 (let ((coding-system-for-write 192 (or nnmbox-file-coding-system-for-write 193 nnmbox-file-coding-system))) 194 (save-buffer))) 195 196(defun nnmbox-save-active (group-alist active-file) 197 (let ((nnmail-active-file-coding-system 198 (or nnmbox-active-file-coding-system-for-write 199 nnmbox-active-file-coding-system))) 200 (nnmail-save-active group-alist active-file))) 201 202(deffoo nnmbox-request-scan (&optional group server) 203 (nnmbox-possibly-change-newsgroup group server) 204 (nnmbox-read-mbox) 205 (nnmail-get-new-mail 206 'nnmbox 207 (lambda () 208 (save-excursion 209 (set-buffer nnmbox-mbox-buffer) 210 (nnmbox-save-buffer))) 211 (file-name-directory nnmbox-mbox-file) 212 group 213 (lambda () 214 (save-excursion 215 (let ((in-buf (current-buffer))) 216 (set-buffer nnmbox-mbox-buffer) 217 (goto-char (point-max)) 218 (insert-buffer-substring in-buf))) 219 (nnmbox-save-active nnmbox-group-alist nnmbox-active-file)))) 220 221(deffoo nnmbox-close-group (group &optional server) 222 t) 223 224(deffoo nnmbox-request-create-group (group &optional server args) 225 (nnmail-activate 'nnmbox) 226 (unless (assoc group nnmbox-group-alist) 227 (push (list group (cons 1 0)) 228 nnmbox-group-alist) 229 (nnmbox-save-active nnmbox-group-alist nnmbox-active-file)) 230 t) 231 232(deffoo nnmbox-request-list (&optional server) 233 (save-excursion 234 (let ((nnmail-file-coding-system 235 nnmbox-active-file-coding-system)) 236 (nnmail-find-file nnmbox-active-file)) 237 (setq nnmbox-group-alist (nnmail-get-active)) 238 t)) 239 240(deffoo nnmbox-request-newgroups (date &optional server) 241 (nnmbox-request-list server)) 242 243(deffoo nnmbox-request-list-newsgroups (&optional server) 244 (nnheader-report 'nnmbox "LIST NEWSGROUPS is not implemented.")) 245 246(deffoo nnmbox-request-expire-articles 247 (articles newsgroup &optional server force) 248 (nnmbox-possibly-change-newsgroup newsgroup server) 249 (let* ((is-old t) 250 rest) 251 (nnmail-activate 'nnmbox) 252 253 (save-excursion 254 (set-buffer nnmbox-mbox-buffer) 255 (while (and articles is-old) 256 (when (nnmbox-find-article (car articles)) 257 (if (setq is-old 258 (nnmail-expired-article-p 259 newsgroup 260 (buffer-substring 261 (point) (progn (end-of-line) (point))) force)) 262 (progn 263 (unless (eq nnmail-expiry-target 'delete) 264 (with-temp-buffer 265 (nnmbox-request-article (car articles) 266 newsgroup server 267 (current-buffer)) 268 (let ((nnml-current-directory nil)) 269 (nnmail-expiry-target-group 270 nnmail-expiry-target newsgroup))) 271 (nnmbox-possibly-change-newsgroup newsgroup server)) 272 (nnheader-message 5 "Deleting article %d in %s..." 273 (car articles) newsgroup) 274 (nnmbox-delete-mail)) 275 (push (car articles) rest))) 276 (setq articles (cdr articles))) 277 (nnmbox-save-buffer) 278 ;; Find the lowest active article in this group. 279 (let ((active (nth 1 (assoc newsgroup nnmbox-group-alist)))) 280 (while (and (not (nnmbox-find-article (car active))) 281 (<= (car active) (cdr active))) 282 (setcar active (1+ (car active))))) 283 (nnmbox-save-active nnmbox-group-alist nnmbox-active-file) 284 (nconc rest articles)))) 285 286(deffoo nnmbox-request-move-article 287 (article group server accept-form &optional last) 288 (let ((buf (get-buffer-create " *nnmbox move*")) 289 result) 290 (and 291 (nnmbox-request-article article group server) 292 (save-excursion 293 (set-buffer buf) 294 (erase-buffer) 295 (insert-buffer-substring nntp-server-buffer) 296 (goto-char (point-min)) 297 (while (re-search-forward 298 "^X-Gnus-Newsgroup:" 299 (save-excursion (search-forward "\n\n" nil t) (point)) t) 300 (gnus-delete-line)) 301 (setq result (eval accept-form)) 302 (kill-buffer buf) 303 result) 304 (save-excursion 305 (nnmbox-possibly-change-newsgroup group server) 306 (set-buffer nnmbox-mbox-buffer) 307 (when (nnmbox-find-article article) 308 (nnmbox-delete-mail)) 309 (and last (nnmbox-save-buffer)))) 310 result)) 311 312(deffoo nnmbox-request-accept-article (group &optional server last) 313 (nnmbox-possibly-change-newsgroup group server) 314 (nnmail-check-syntax) 315 (let ((buf (current-buffer)) 316 result) 317 (goto-char (point-min)) 318 ;; The From line may have been quoted by movemail. 319 (when (looking-at (concat ">" message-unix-mail-delimiter)) 320 (delete-char 1)) 321 (if (looking-at "X-From-Line: ") 322 (replace-match "From ") 323 (insert "From nobody " (current-time-string) "\n")) 324 (and 325 (nnmail-activate 'nnmbox) 326 (progn 327 (set-buffer buf) 328 (goto-char (point-min)) 329 (search-forward "\n\n" nil t) 330 (forward-line -1) 331 (while (re-search-backward "^X-Gnus-Newsgroup: " nil t) 332 (delete-region (point) (progn (forward-line 1) (point)))) 333 (when nnmail-cache-accepted-message-ids 334 (nnmail-cache-insert (nnmail-fetch-field "message-id") 335 group 336 (nnmail-fetch-field "subject") 337 (nnmail-fetch-field "from"))) 338 (setq result (if (stringp group) 339 (list (cons group (nnmbox-active-number group))) 340 (nnmail-article-group 'nnmbox-active-number))) 341 (if (and (null result) 342 (yes-or-no-p "Moved to `junk' group; delete article? ")) 343 (setq result 'junk) 344 (setq result (car (nnmbox-save-mail result))))) 345 (save-excursion 346 (set-buffer nnmbox-mbox-buffer) 347 (goto-char (point-max)) 348 (insert-buffer-substring buf) 349 (when last 350 (when nnmail-cache-accepted-message-ids 351 (nnmail-cache-close)) 352 (nnmbox-save-active nnmbox-group-alist nnmbox-active-file) 353 (nnmbox-save-buffer)))) 354 result)) 355 356(deffoo nnmbox-request-replace-article (article group buffer) 357 (nnmbox-possibly-change-newsgroup group) 358 (save-excursion 359 (set-buffer nnmbox-mbox-buffer) 360 (if (not (nnmbox-find-article article)) 361 nil 362 (nnmbox-delete-mail t t) 363 (insert-buffer-substring buffer) 364 (nnmbox-save-buffer) 365 t))) 366 367(deffoo nnmbox-request-delete-group (group &optional force server) 368 (nnmbox-possibly-change-newsgroup group server) 369 ;; Delete all articles in GROUP. 370 (if (not force) 371 () ; Don't delete the articles. 372 (save-excursion 373 (set-buffer nnmbox-mbox-buffer) 374 (goto-char (point-min)) 375 ;; Delete all articles in this group. 376 (let ((ident (concat "\nX-Gnus-Newsgroup: " nnmbox-current-group ":")) 377 found) 378 (while (search-forward ident nil t) 379 (setq found t) 380 (nnmbox-delete-mail)) 381 (when found 382 (nnmbox-save-buffer))))) 383 ;; Remove the group from all structures. 384 (setq nnmbox-group-alist 385 (delq (assoc group nnmbox-group-alist) nnmbox-group-alist) 386 nnmbox-current-group nil) 387 ;; Save the active file. 388 (nnmbox-save-active nnmbox-group-alist nnmbox-active-file) 389 t) 390 391(deffoo nnmbox-request-rename-group (group new-name &optional server) 392 (nnmbox-possibly-change-newsgroup group server) 393 (save-excursion 394 (set-buffer nnmbox-mbox-buffer) 395 (goto-char (point-min)) 396 (let ((ident (concat "\nX-Gnus-Newsgroup: " nnmbox-current-group ":")) 397 (new-ident (concat "\nX-Gnus-Newsgroup: " new-name ":")) 398 found) 399 (while (search-forward ident nil t) 400 (replace-match new-ident t t) 401 (setq found t)) 402 (when found 403 (nnmbox-save-buffer)))) 404 (let ((entry (assoc group nnmbox-group-active-articles))) 405 (when entry 406 (setcar entry new-name))) 407 (let ((entry (assoc group nnmbox-group-alist))) 408 (when entry 409 (setcar entry new-name)) 410 (setq nnmbox-current-group nil) 411 ;; Save the new group alist. 412 (nnmbox-save-active nnmbox-group-alist nnmbox-active-file) 413 t)) 414 415 416;;; Internal functions. 417 418;; If FORCE, delete article no matter how many X-Gnus-Newsgroup 419;; headers there are. If LEAVE-DELIM, don't delete the Unix mbox 420;; delimiter line. 421(defun nnmbox-delete-mail (&optional force leave-delim) 422 ;; Delete the current X-Gnus-Newsgroup line. 423 ;; First delete record of active article, unless the article is being 424 ;; replaced, indicated by FORCE being non-nil. 425 (if (not force) 426 (nnmbox-record-deleted-article (nnmbox-article-group-number t))) 427 (or force 428 (gnus-delete-line)) 429 ;; Beginning of the article. 430 (save-excursion 431 (save-restriction 432 (narrow-to-region 433 (save-excursion 434 (re-search-backward (concat "^" message-unix-mail-delimiter) nil t) 435 (if leave-delim (progn (forward-line 1) (point)) 436 (match-beginning 0))) 437 (progn 438 (forward-line 1) 439 (or (and (re-search-forward (concat "^" message-unix-mail-delimiter) 440 nil t) 441 (if (and (not (bobp)) leave-delim) 442 (progn (forward-line -2) (point)) 443 (match-beginning 0))) 444 (point-max)))) 445 (goto-char (point-min)) 446 ;; Only delete the article if no other group 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 nnmbox-possibly-change-newsgroup (newsgroup &optional server) 451 (when (and server 452 (not (nnmbox-server-opened server))) 453 (nnmbox-open-server server)) 454 (when (or (not nnmbox-mbox-buffer) 455 (not (buffer-name nnmbox-mbox-buffer))) 456 (nnmbox-read-mbox)) 457 (when (not nnmbox-group-alist) 458 (nnmail-activate 'nnmbox)) 459 (if newsgroup 460 (when (assoc newsgroup nnmbox-group-alist) 461 (setq nnmbox-current-group newsgroup)) 462 t)) 463 464(defun nnmbox-article-string (article) 465 (if (numberp article) 466 (concat "\nX-Gnus-Newsgroup: " nnmbox-current-group ":" 467 (int-to-string article) " ") 468 (concat "\nMessage-ID: " article))) 469 470(defun nnmbox-article-group-number (this-line) 471 (save-excursion 472 (if this-line 473 (beginning-of-line) 474 (goto-char (point-min))) 475 (when (re-search-forward "^X-Gnus-Newsgroup: +\\([^:]+\\):\\([0-9]+\\) " 476 nil t) 477 (cons (buffer-substring (match-beginning 1) (match-end 1)) 478 (string-to-number 479 (buffer-substring (match-beginning 2) (match-end 2))))))) 480 481(defun nnmbox-in-header-p (pos) 482 "Return non-nil if POS is in the header of an article." 483 (save-excursion 484 (goto-char pos) 485 (re-search-backward (concat "^" message-unix-mail-delimiter) nil t) 486 (search-forward "\n\n" nil t) 487 (< pos (point)))) 488 489(defun nnmbox-find-article (article) 490 "Leaves point on the relevant X-Gnus-Newsgroup line if found." 491 ;; Check that article is in the active range first, to avoid an 492 ;; expensive exhaustive search if it isn't. 493 (if (and (numberp article) 494 (not (nnmbox-is-article-active-p article))) 495 nil 496 (let ((art-string (nnmbox-article-string article)) 497 (found nil)) 498 ;; There is the possibility that the X-Gnus-Newsgroup line appears 499 ;; in the body of an article (for instance, if an article has been 500 ;; forwarded from someone using Gnus as their mailer), so check 501 ;; that the line is actually part of the article header. 502 (or (and (search-forward art-string nil t) 503 (nnmbox-in-header-p (point))) 504 (progn 505 (goto-char (point-min)) 506 (while (and (not found) 507 (search-forward art-string nil t)) 508 (setq found (nnmbox-in-header-p (point)))) 509 found))))) 510 511(defun nnmbox-record-active-article (group-art) 512 (let* ((group (car group-art)) 513 (article (cdr group-art)) 514 (entry 515 (or (assoc group nnmbox-group-active-articles) 516 (progn 517 (push (list group) 518 nnmbox-group-active-articles) 519 (car nnmbox-group-active-articles))))) 520 ;; add article to index, either by building complete list 521 ;; in reverse order, or as a list of ranges. 522 (if (not nnmbox-group-building-active-articles) 523 (setcdr entry (gnus-add-to-range (cdr entry) (list article))) 524 (when (memq article (cdr entry)) 525 (switch-to-buffer nnmbox-mbox-buffer) 526 (error "Article %s:%d already exists!" group article)) 527 (when (and (cadr entry) (< article (cadr entry))) 528 (switch-to-buffer nnmbox-mbox-buffer) 529 (error "Article %s:%d out of order" group article)) 530 (setcdr entry (cons article (cdr entry)))))) 531 532(defun nnmbox-record-deleted-article (group-art) 533 (let* ((group (car group-art)) 534 (article (cdr group-art)) 535 (entry 536 (or (assoc group nnmbox-group-active-articles) 537 (progn 538 (push (list group) 539 nnmbox-group-active-articles) 540 (car nnmbox-group-active-articles))))) 541 ;; remove article from index 542 (setcdr entry (gnus-remove-from-range (cdr entry) (list article))))) 543 544(defun nnmbox-is-article-active-p (article) 545 (gnus-member-of-range 546 article 547 (cdr (assoc nnmbox-current-group 548 nnmbox-group-active-articles)))) 549 550(defun nnmbox-save-mail (group-art) 551 "Called narrowed to an article." 552 (let ((delim (concat "^" message-unix-mail-delimiter))) 553 (goto-char (point-min)) 554 ;; This might come from somewhere else. 555 (unless (looking-at delim) 556 (insert "From nobody " (current-time-string) "\n") 557 (goto-char (point-min))) 558 ;; Quote all "From " lines in the article. 559 (forward-line 1) 560 (while (re-search-forward delim nil t) 561 (beginning-of-line) 562 (insert "> ")) 563 (nnmail-insert-lines) 564 (nnmail-insert-xref group-art) 565 (nnmbox-insert-newsgroup-line group-art) 566 (let ((alist group-art)) 567 (while alist 568 (nnmbox-record-active-article (car alist)) 569 (setq alist (cdr alist)))) 570 (run-hooks 'nnmail-prepare-save-mail-hook) 571 (run-hooks 'nnmbox-prepare-save-mail-hook) 572 group-art)) 573 574(defun nnmbox-insert-newsgroup-line (group-art) 575 (save-excursion 576 (goto-char (point-min)) 577 (when (search-forward "\n\n" nil t) 578 (forward-char -1) 579 (while group-art 580 (insert (format "X-Gnus-Newsgroup: %s:%d %s\n" 581 (caar group-art) (cdar group-art) 582 (current-time-string))) 583 (setq group-art (cdr group-art)))) 584 t)) 585 586(defun nnmbox-active-number (group) 587 ;; Find the next article number in GROUP. 588 (let ((active (cadr (assoc group nnmbox-group-alist)))) 589 (if active 590 (setcdr active (1+ (cdr active))) 591 ;; This group is new, so we create a new entry for it. 592 ;; This might be a bit naughty... creating groups on the drop of 593 ;; a hat, but I don't know... 594 (push (list group (setq active (cons 1 1))) 595 nnmbox-group-alist)) 596 (cdr active))) 597 598(defun nnmbox-create-mbox () 599 (when (not (file-exists-p nnmbox-mbox-file)) 600 (let ((nnmail-file-coding-system 601 (or nnmbox-file-coding-system-for-write 602 nnmbox-file-coding-system)) 603 (dir (file-name-directory nnmbox-mbox-file))) 604 (and dir (gnus-make-directory dir)) 605 (nnmail-write-region (point-min) (point-min) 606 nnmbox-mbox-file t 'nomesg)))) 607 608(defun nnmbox-read-mbox () 609 (nnmail-activate 'nnmbox) 610 (nnmbox-create-mbox) 611 (if (and nnmbox-mbox-buffer 612 (buffer-name nnmbox-mbox-buffer) 613 (save-excursion 614 (set-buffer nnmbox-mbox-buffer) 615 (= (buffer-size) (nnheader-file-size nnmbox-mbox-file)))) 616 () 617 (save-excursion 618 (let ((delim (concat "^" message-unix-mail-delimiter)) 619 (alist nnmbox-group-alist) 620 (nnmbox-group-building-active-articles t) 621 start end end-header number) 622 (set-buffer (setq nnmbox-mbox-buffer 623 (let ((nnheader-file-coding-system 624 nnmbox-file-coding-system)) 625 (nnheader-find-file-noselect 626 nnmbox-mbox-file t t)))) 627 (mm-enable-multibyte) 628 (buffer-disable-undo) 629 630 ;; Go through the group alist and compare against the mbox file. 631 (while alist 632 (goto-char (point-max)) 633 (when (and (re-search-backward 634 (format "^X-Gnus-Newsgroup: %s:\\([0-9]+\\) " 635 (caar alist)) nil t) 636 (> (setq number 637 (string-to-number 638 (buffer-substring 639 (match-beginning 1) (match-end 1)))) 640 (cdadar alist))) 641 (setcdr (cadar alist) number)) 642 (setq alist (cdr alist))) 643 644 ;; Examine all articles for our private X-Gnus-Newsgroup 645 ;; headers. This is done primarily as a consistency check, but 646 ;; it is convenient for building an index of the articles 647 ;; present, to avoid costly searches for missing articles 648 ;; (eg. when expiring articles). 649 (goto-char (point-min)) 650 (setq nnmbox-group-active-articles nil) 651 (while (re-search-forward delim nil t) 652 (setq start (match-beginning 0)) 653 (save-excursion 654 (search-forward "\n\n" nil t) 655 (setq end-header (point)) 656 (setq end (or (and 657 (re-search-forward delim nil t) 658 (match-beginning 0)) 659 (point-max)))) 660 (if (search-forward "\nX-Gnus-Newsgroup: " end-header t) 661 ;; Build a list of articles in each group, remembering 662 ;; that each article may be in more than one group. 663 (progn 664 (nnmbox-record-active-article (nnmbox-article-group-number t)) 665 (while (search-forward "\nX-Gnus-Newsgroup: " end-header t) 666 (nnmbox-record-active-article (nnmbox-article-group-number t)))) 667 ;; The article is either new, or for some other reason 668 ;; hasn't got our private headers, so add them now. The 669 ;; only situation I've encountered when the X-Gnus-Newsgroup 670 ;; header is missing is if the article contains a forwarded 671 ;; message which does contain that header line (earlier 672 ;; versions of Gnus didn't restrict their search to the 673 ;; headers). In this case, there is an Xref line which 674 ;; provides the relevant information to construct the 675 ;; missing header(s). 676 (save-excursion 677 (save-restriction 678 (narrow-to-region start end) 679 (if (re-search-forward "\nXref: [^ ]+" end-header t) 680 ;; generate headers from Xref: 681 (let (alist) 682 (while (re-search-forward " \\([^:]+\\):\\([0-9]+\\)" end-header t) 683 (push (cons (match-string 1) 684 (string-to-number (match-string 2))) alist)) 685 (nnmbox-insert-newsgroup-line alist)) 686 ;; this is really a new article 687 (nnmbox-save-mail 688 (nnmail-article-group 'nnmbox-active-number)))))) 689 (goto-char end)) 690 ;; put article lists in order 691 (setq alist nnmbox-group-active-articles) 692 (while alist 693 (setcdr (car alist) (gnus-compress-sequence (nreverse (cdar alist)))) 694 (setq alist (cdr alist))))))) 695 696(provide 'nnmbox) 697 698;;; arch-tag: 611dd95f-be37-413a-b3ae-8b059ba93659 699;;; nnmbox.el ends here 700