lisp/gnus/nnsoup.el

   1 ;;; nnsoup.el --- SOUP 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 ;;; Code:
  28
  29 (require 'nnheader)
  30 (require 'nnmail)
  31 (require 'gnus-soup)
  32 (require 'gnus-msg)
  33 (require 'nnoo)
  34 (eval-when-compile (require 'cl))
  35
  36 (nnoo-declare nnsoup)
  37
  38 (defvoo nnsoup-directory "~/SOUP/"
  39   "*SOUP packet directory.")
  40
  41 (defvoo nnsoup-tmp-directory temporary-file-directory
  42   "*Where nnsoup will store temporary files.")
  43
  44 (defvoo nnsoup-replies-directory (concat nnsoup-directory "replies/")
  45   "*Directory where outgoing packets will be composed.")
  46
  47 (defvoo nnsoup-replies-format-type ?n
  48   "*Format of the replies packages.")
  49
  50 (defvoo nnsoup-replies-index-type ?n
  51   "*Index type of the replies packages.")
  52
  53 (defvoo nnsoup-active-file (concat nnsoup-directory "active")
  54   "Active file.")
  55
  56 (defvoo nnsoup-packer "tar cf - %s | gzip > $HOME/Soupin%d.tgz"
  57   "Format string command for packing a SOUP packet.
  58 The SOUP files will be inserted where the %s is in the string.
  59 This string MUST contain both %s and %d.  The file number will be
  60 inserted where %d appears.")
  61
  62 (defvoo nnsoup-unpacker "gunzip -c %s | tar xvf -"
  63   "*Format string command for unpacking a SOUP packet.
  64 The SOUP packet file name will be inserted at the %s.")
  65
  66 (defvoo nnsoup-packet-directory "~/"
  67   "*Where nnsoup will look for incoming packets.")
  68
  69 (defvoo nnsoup-packet-regexp "Soupout"
  70   "*Regular expression matching SOUP packets in `nnsoup-packet-directory'.")
  71
  72 (defvoo nnsoup-always-save t
  73   "If non nil commit the reply buffer on each message send.
  74 This is necessary if using message mode outside Gnus with nnsoup as a
  75 backend for the messages.")
  76
  77 \f
  78
  79 (defconst nnsoup-version "nnsoup 0.0"
  80   "nnsoup version.")
  81
  82 (defvoo nnsoup-status-string "")
  83 (defvoo nnsoup-group-alist nil)
  84 (defvoo nnsoup-current-prefix 0)
  85 (defvoo nnsoup-replies-list nil)
  86 (defvoo nnsoup-buffers nil)
  87 (defvoo nnsoup-current-group nil)
  88 (defvoo nnsoup-group-alist-touched nil)
  89 (defvoo nnsoup-article-alist nil)
  90 \f
  91
  92 ;;; Interface functions.
  93
  94 (nnoo-define-basics nnsoup)
  95
  96 (deffoo nnsoup-retrieve-headers (sequence &optional group server fetch-old)
  97   (nnsoup-possibly-change-group group)
  98   (save-excursion
  99     (set-buffer nntp-server-buffer)
 100     (erase-buffer)
 101     (let ((areas (cddr (assoc nnsoup-current-group nnsoup-group-alist)))
 102           (articles sequence)
 103           (use-nov t)
 104           useful-areas this-area-seq msg-buf)
 105       (if (stringp (car sequence))
 106           ;; We don't support fetching by Message-ID.
 107           'headers
 108         ;; We go through all the areas and find which files the
 109         ;; articles in SEQUENCE come from.
 110         (while (and areas sequence)
 111           ;; Peel off areas that are below sequence.
 112           (while (and areas (< (cdaar areas) (car sequence)))
 113             (setq areas (cdr areas)))
 114           (when areas
 115             ;; This is a useful area.
 116             (push (car areas) useful-areas)
 117             (setq this-area-seq nil)
 118             ;; We take note whether this MSG has a corresponding IDX
 119             ;; for later use.
 120             (when (or (= (gnus-soup-encoding-index
 121                           (gnus-soup-area-encoding (nth 1 (car areas)))) ?n)
 122                       (not (file-exists-p
 123                             (nnsoup-file
 124                              (gnus-soup-area-prefix (nth 1 (car areas)))))))
 125               (setq use-nov nil))
 126             ;; We assign the portion of `sequence' that is relevant to
 127             ;; this MSG packet to this packet.
 128             (while (and sequence (<= (car sequence) (cdaar areas)))
 129               (push (car sequence) this-area-seq)
 130               (setq sequence (cdr sequence)))
 131             (setcar useful-areas (cons (nreverse this-area-seq)
 132                                        (car useful-areas)))))
 133
 134         ;; We now have a list of article numbers and corresponding
 135         ;; areas.
 136         (setq useful-areas (nreverse useful-areas))
 137
 138         ;; Two different approaches depending on whether all the MSG
 139         ;; files have corresponding IDX files.  If they all do, we
 140         ;; simply return the relevant IDX files and let Gnus sort out
 141         ;; what lines are relevant.  If some of the IDX files are
 142         ;; missing, we must return HEADs for all the articles.
 143         (if use-nov
 144             ;; We have IDX files for all areas.
 145             (progn
 146               (while useful-areas
 147                 (goto-char (point-max))
 148                 (let ((b (point))
 149                       (number (car (nth 1 (car useful-areas))))
 150                       (index-buffer (nnsoup-index-buffer
 151                                      (gnus-soup-area-prefix
 152                                       (nth 2 (car useful-areas))))))
 153                   (when index-buffer
 154                     (insert-buffer-substring index-buffer)
 155                     (goto-char b)
 156                     ;; We have to remove the index number entires and
 157                     ;; insert article numbers instead.
 158                     (while (looking-at "[0-9]+")
 159                       (replace-match (int-to-string number) t t)
 160                       (incf number)
 161                       (forward-line 1))))
 162                 (setq useful-areas (cdr useful-areas)))
 163               'nov)
 164           ;; We insert HEADs.
 165           (while useful-areas
 166             (setq articles (caar useful-areas)
 167                   useful-areas (cdr useful-areas))
 168             (while articles
 169               (when (setq msg-buf
 170                           (nnsoup-narrow-to-article
 171                            (car articles) (cdar useful-areas) 'head))
 172                 (goto-char (point-max))
 173                 (insert (format "221 %d Article retrieved.\n" (car articles)))
 174                 (insert-buffer-substring msg-buf)
 175                 (goto-char (point-max))
 176                 (insert ".\n"))
 177               (setq articles (cdr articles))))
 178
 179           (nnheader-fold-continuation-lines)
 180           'headers)))))
 181
 182 (deffoo nnsoup-open-server (server &optional defs)
 183   (nnoo-change-server 'nnsoup server defs)
 184   (when (not (file-exists-p nnsoup-directory))
 185     (condition-case ()
 186         (make-directory nnsoup-directory t)
 187       (error t)))
 188   (cond
 189    ((not (file-exists-p nnsoup-directory))
 190     (nnsoup-close-server)
 191     (nnheader-report 'nnsoup "Couldn't create directory: %s" nnsoup-directory))
 192    ((not (file-directory-p (file-truename nnsoup-directory)))
 193     (nnsoup-close-server)
 194     (nnheader-report 'nnsoup "Not a directory: %s" nnsoup-directory))
 195    (t
 196     (nnsoup-read-active-file)
 197     (nnheader-report 'nnsoup "Opened server %s using directory %s"
 198                      server nnsoup-directory)
 199     t)))
 200
 201 (deffoo nnsoup-request-close ()
 202   (nnsoup-write-active-file)
 203   (nnsoup-write-replies)
 204   (gnus-soup-save-areas)
 205   ;; Kill all nnsoup buffers.
 206   (let (buffer)
 207     (while nnsoup-buffers
 208       (setq buffer (cdr (pop nnsoup-buffers)))
 209       (and buffer
 210            (buffer-name buffer)
 211            (kill-buffer buffer))))
 212   (setq nnsoup-group-alist nil
 213         nnsoup-group-alist-touched nil
 214         nnsoup-current-group nil
 215         nnsoup-replies-list nil)
 216   (nnoo-close-server 'nnoo)
 217   t)
 218
 219 (deffoo nnsoup-request-article (id &optional newsgroup server buffer)
 220   (nnsoup-possibly-change-group newsgroup)
 221   (let (buf)
 222     (save-excursion
 223       (set-buffer (or buffer nntp-server-buffer))
 224       (erase-buffer)
 225       (when (and (not (stringp id))
 226                  (setq buf (nnsoup-narrow-to-article id)))
 227         (insert-buffer-substring buf)
 228         t))))
 229
 230 (deffoo nnsoup-request-group (group &optional server dont-check)
 231   (nnsoup-possibly-change-group group)
 232   (if dont-check
 233       t
 234     (let ((active (cadr (assoc group nnsoup-group-alist))))
 235       (if (not active)
 236           (nnheader-report 'nnsoup "No such group: %s" group)
 237         (nnheader-insert
 238          "211 %d %d %d %s\n"
 239          (max (1+ (- (cdr active) (car active))) 0)
 240          (car active) (cdr active) group)))))
 241
 242 (deffoo nnsoup-request-type (group &optional article)
 243   (nnsoup-possibly-change-group group)
 244   ;; Try to guess the type based on the first article in the group.
 245   (when (not article)
 246     (setq article
 247           (cdaar (cddr (assoc group nnsoup-group-alist)))))
 248   (if (not article)
 249       'unknown
 250     (let ((kind (gnus-soup-encoding-kind
 251                  (gnus-soup-area-encoding
 252                   (nth 1 (nnsoup-article-to-area
 253                           article nnsoup-current-group))))))
 254       (cond ((= kind ?m) 'mail)
 255             ((= kind ?n) 'news)
 256             (t 'unknown)))))
 257
 258 (deffoo nnsoup-close-group (group &optional server)
 259   ;; Kill all nnsoup buffers.
 260   (let ((buffers nnsoup-buffers)
 261         elem)
 262     (while buffers
 263       (when (equal (car (setq elem (pop buffers))) group)
 264         (setq nnsoup-buffers (delq elem nnsoup-buffers))
 265         (and (cdr elem) (buffer-name (cdr elem))
 266              (kill-buffer (cdr elem))))))
 267   t)
 268
 269 (deffoo nnsoup-request-list (&optional server)
 270   (save-excursion
 271     (set-buffer nntp-server-buffer)
 272     (erase-buffer)
 273     (unless nnsoup-group-alist
 274       (nnsoup-read-active-file))
 275     (let ((alist nnsoup-group-alist)
 276           (standard-output (current-buffer))
 277           entry)
 278       (while (setq entry (pop alist))
 279         (insert (car entry) " ")
 280         (princ (cdadr entry))
 281         (insert " ")
 282         (princ (caadr entry))
 283         (insert " y\n"))
 284       t)))
 285
 286 (deffoo nnsoup-request-scan (group &optional server)
 287   (nnsoup-unpack-packets))
 288
 289 (deffoo nnsoup-request-newgroups (date &optional server)
 290   (nnsoup-request-list))
 291
 292 (deffoo nnsoup-request-list-newsgroups (&optional server)
 293   nil)
 294
 295 (deffoo nnsoup-request-post (&optional server)
 296   (nnsoup-store-reply "news")
 297   t)
 298
 299 (deffoo nnsoup-request-mail (&optional server)
 300   (nnsoup-store-reply "mail")
 301   t)
 302
 303 (deffoo nnsoup-request-expire-articles (articles group &optional server force)
 304   (nnsoup-possibly-change-group group)
 305   (let* ((total-infolist (assoc group nnsoup-group-alist))
 306          (active (cadr total-infolist))
 307          (infolist (cddr total-infolist))
 308          info range-list mod-time prefix)
 309     (while infolist
 310       (setq info (pop infolist)
 311             range-list (gnus-uncompress-range (car info))
 312             prefix (gnus-soup-area-prefix (nth 1 info)))
 313       (when ;; All the articles in this file are marked for expiry.
 314           (and (or (setq mod-time (nth 5 (file-attributes
 315                                           (nnsoup-file prefix))))
 316                    (setq mod-time (nth 5 (file-attributes
 317                                           (nnsoup-file prefix t)))))
 318                (gnus-sublist-p articles range-list)
 319                ;; This file is old enough.
 320                (nnmail-expired-article-p group mod-time force))
 321         ;; Ok, we delete this file.
 322         (when (ignore-errors
 323                 (nnheader-message
 324                  5 "Deleting %s in group %s..." (nnsoup-file prefix)
 325                  group)
 326                 (when (file-exists-p (nnsoup-file prefix))
 327                   (delete-file (nnsoup-file prefix)))
 328                 (nnheader-message
 329                  5 "Deleting %s in group %s..." (nnsoup-file prefix t)
 330                  group)
 331                 (when (file-exists-p (nnsoup-file prefix t))
 332                   (delete-file (nnsoup-file prefix t)))
 333                 t)
 334           (setcdr (cdr total-infolist) (delq info (cddr total-infolist)))
 335           (setq articles (gnus-sorted-complement articles range-list))))
 336       (when (not mod-time)
 337         (setcdr (cdr total-infolist) (delq info (cddr total-infolist)))))
 338     (if (cddr total-infolist)
 339         (setcar active (caaadr (cdr total-infolist)))
 340       (setcar active (1+ (cdr active))))
 341     (nnsoup-write-active-file t)
 342     ;; Return the articles that weren't expired.
 343     articles))
 344
 345 \f
 346 ;;; Internal functions
 347
 348 (defun nnsoup-possibly-change-group (group &optional force)
 349   (when (and group
 350              (not (equal nnsoup-current-group group)))
 351     (setq nnsoup-article-alist nil)
 352     (setq nnsoup-current-group group))
 353   t)
 354
 355 (defun nnsoup-read-active-file ()
 356   (setq nnsoup-group-alist nil)
 357   (when (file-exists-p nnsoup-active-file)
 358     (ignore-errors
 359       (load nnsoup-active-file t t t))
 360     ;; Be backwards compatible.
 361     (when (and nnsoup-group-alist
 362                (not (atom (caadar nnsoup-group-alist))))
 363       (let ((alist nnsoup-group-alist)
 364             entry e min max)
 365         (while (setq e (cdr (setq entry (pop alist))))
 366           (setq min (caaar e))
 367           (while (cdr e)
 368             (setq e (cdr e)))
 369           (setq max (cdaar e))
 370           (setcdr entry (cons (cons min max) (cdr entry)))))
 371       (setq nnsoup-group-alist-touched t))
 372     nnsoup-group-alist))
 373
 374 (defun nnsoup-write-active-file (&optional force)
 375   (when (and nnsoup-group-alist
 376              (or force
 377                  nnsoup-group-alist-touched))
 378     (setq nnsoup-group-alist-touched nil)
 379     (nnheader-temp-write nnsoup-active-file
 380       (gnus-prin1 `(setq nnsoup-group-alist ',nnsoup-group-alist))
 381       (insert "\n")
 382       (gnus-prin1 `(setq nnsoup-current-prefix ,nnsoup-current-prefix))
 383       (insert "\n"))))
 384
 385 (defun nnsoup-next-prefix ()
 386   "Return the next free prefix."
 387   (let (prefix)
 388     (while (or (file-exists-p
 389                 (nnsoup-file (setq prefix (int-to-string
 390                                            nnsoup-current-prefix))))
 391                (file-exists-p (nnsoup-file prefix t)))
 392       (incf nnsoup-current-prefix))
 393     (incf nnsoup-current-prefix)
 394     prefix))
 395
 396 (defun nnsoup-file-name (dir file)
 397   "Return the full path of FILE (in any case) in DIR."
 398   (let* ((case-fold-search t)
 399          (files (directory-files dir t))
 400          (regexp (concat (regexp-quote file) "$")))
 401     (car (delq nil
 402                (mapcar
 403                 (lambda (file)
 404                   (if (string-match regexp file)
 405                       file
 406                     nil))
 407                 files)))))
 408
 409 (defun nnsoup-read-areas ()
 410   (let ((areas-file (nnsoup-file-name nnsoup-tmp-directory "areas")))
 411     (when areas-file
 412       (save-excursion
 413         (set-buffer nntp-server-buffer)
 414         (let ((areas (gnus-soup-parse-areas areas-file))
 415               entry number area lnum cur-prefix file)
 416           ;; Go through all areas in the new AREAS file.
 417           (while (setq area (pop areas))
 418             ;; Change the name to the permanent name and move the files.
 419             (setq cur-prefix (nnsoup-next-prefix))
 420             (nnheader-message 5 "Incorporating file %s..." cur-prefix)
 421             (when (file-exists-p
 422                    (setq file (concat nnsoup-tmp-directory
 423                                       (gnus-soup-area-prefix area) ".IDX")))
 424               (rename-file file (nnsoup-file cur-prefix)))
 425             (when (file-exists-p
 426                    (setq file (concat nnsoup-tmp-directory
 427                                       (gnus-soup-area-prefix area) ".MSG")))
 428               (rename-file file (nnsoup-file cur-prefix t))
 429               (gnus-soup-set-area-prefix area cur-prefix)
 430               ;; Find the number of new articles in this area.
 431               (setq number (nnsoup-number-of-articles area))
 432               (if (not (setq entry (assoc (gnus-soup-area-name area)
 433                                           nnsoup-group-alist)))
 434                   ;; If this is a new area (group), we just add this info to
 435                   ;; the group alist.
 436                   (push (list (gnus-soup-area-name area)
 437                               (cons 1 number)
 438                               (list (cons 1 number) area))
 439                         nnsoup-group-alist)
 440                 ;; There are already articles in this group, so we add this
 441                 ;; info to the end of the entry.
 442                 (nconc entry (list (list (cons (1+ (setq lnum (cdadr entry)))
 443                                                (+ lnum number))
 444                                          area)))
 445                 (setcdr (cadr entry) (+ lnum number))))))
 446         (nnsoup-write-active-file t)
 447         (delete-file areas-file)))))
 448
 449 (defun nnsoup-number-of-articles (area)
 450   (save-excursion
 451     (cond
 452      ;; If the number is in the area info, we just return it.
 453      ((gnus-soup-area-number area)
 454       (gnus-soup-area-number area))
 455      ;; If there is an index file, we just count the lines.
 456      ((/= (gnus-soup-encoding-index (gnus-soup-area-encoding area)) ?n)
 457       (set-buffer (nnsoup-index-buffer (gnus-soup-area-prefix area)))
 458       (count-lines (point-min) (point-max)))
 459      ;; We do it the hard way - re-searching through the message
 460      ;; buffer.
 461      (t
 462       (set-buffer (nnsoup-message-buffer (gnus-soup-area-prefix area)))
 463       (unless (assoc (gnus-soup-area-prefix area) nnsoup-article-alist)
 464         (nnsoup-dissect-buffer area))
 465       (length (cdr (assoc (gnus-soup-area-prefix area)
 466                           nnsoup-article-alist)))))))
 467
 468 (defun nnsoup-dissect-buffer (area)
 469   (let ((mbox-delim (concat "^" message-unix-mail-delimiter))
 470         (format (gnus-soup-encoding-format (gnus-soup-area-encoding area)))
 471         (i 0)
 472         alist len)
 473     (goto-char (point-min))
 474     (cond
 475      ;; rnews batch format
 476      ((= format ?n)
 477       (while (looking-at "^#! *rnews \\(+[0-9]+\\) *$")
 478         (forward-line 1)
 479         (push (list
 480                (incf i) (point)
 481                (progn
 482                  (forward-char (string-to-number (match-string 1)))
 483                  (point)))
 484               alist)))
 485      ;; Unix mbox format
 486      ((= format ?m)
 487       (while (looking-at mbox-delim)
 488         (forward-line 1)
 489         (push (list
 490                (incf i) (point)
 491                (progn
 492                  (if (re-search-forward mbox-delim nil t)
 493                      (beginning-of-line)
 494                    (goto-char (point-max)))
 495                  (point)))
 496               alist)))
 497      ;; MMDF format
 498      ((= format ?M)
 499       (while (looking-at "\^A\^A\^A\^A\n")
 500         (forward-line 1)
 501         (push (list
 502                (incf i) (point)
 503                (progn
 504                  (if (search-forward "\n\^A\^A\^A\^A\n" nil t)
 505                      (beginning-of-line)
 506                    (goto-char (point-max)))
 507                  (point)))
 508               alist)))
 509      ;; Binary format
 510      ((or (= format ?B) (= format ?b))
 511       (while (not (eobp))
 512         (setq len (+ (* (char-after (point)) (expt 2.0 24))
 513                      (* (char-after (+ (point) 1)) (expt 2 16))
 514                      (* (char-after (+ (point) 2)) (expt 2 8))
 515                      (char-after (+ (point) 3))))
 516         (push (list
 517                (incf i) (+ (point) 4)
 518                (progn
 519                  (forward-char (floor (+ len 4)))
 520                  (point)))
 521               alist)))
 522      (t
 523       (error "Unknown format: %c" format)))
 524     (push (cons (gnus-soup-area-prefix area) alist) nnsoup-article-alist)))
 525
 526 (defun nnsoup-index-buffer (prefix &optional message)
 527   (let* ((file (concat prefix (if message ".MSG" ".IDX")))
 528          (buffer-name (concat " *nnsoup " file "*")))
 529     (or (get-buffer buffer-name)        ; File already loaded.
 530         (when (file-exists-p (concat nnsoup-directory file))
 531           (save-excursion               ; Load the file.
 532             (set-buffer (get-buffer-create buffer-name))
 533             (buffer-disable-undo (current-buffer))
 534             (push (cons nnsoup-current-group (current-buffer)) nnsoup-buffers)
 535             (nnheader-insert-file-contents (concat nnsoup-directory file))
 536             (current-buffer))))))
 537
 538 (defun nnsoup-file (prefix &optional message)
 539   (expand-file-name
 540    (concat nnsoup-directory prefix (if message ".MSG" ".IDX"))))
 541
 542 (defun nnsoup-message-buffer (prefix)
 543   (nnsoup-index-buffer prefix 'msg))
 544
 545 (defun nnsoup-unpack-packets ()
 546   "Unpack all packets in `nnsoup-packet-directory'."
 547   (let ((packets (directory-files
 548                   nnsoup-packet-directory t nnsoup-packet-regexp))
 549         packet)
 550     (while (setq packet (pop packets))
 551       (nnheader-message 5 "nnsoup: unpacking %s..." packet)
 552       (if (not (gnus-soup-unpack-packet
 553                 nnsoup-tmp-directory nnsoup-unpacker packet))
 554           (nnheader-message 5 "Couldn't unpack %s" packet)
 555         (delete-file packet)
 556         (nnsoup-read-areas)
 557         (nnheader-message 5 "Unpacking...done")))))
 558
 559 (defun nnsoup-narrow-to-article (article &optional area head)
 560   (let* ((area (or area (nnsoup-article-to-area article nnsoup-current-group)))
 561          (prefix (and area (gnus-soup-area-prefix (nth 1 area))))
 562          (msg-buf (and prefix (nnsoup-index-buffer prefix 'msg)))
 563          beg end)
 564     (when area
 565       (save-excursion
 566         (cond
 567          ;; There is no MSG file.
 568          ((null msg-buf)
 569           nil)
 570          ;; We use the index file to find out where the article
 571          ;; begins and ends.
 572          ((and (= (gnus-soup-encoding-index
 573                    (gnus-soup-area-encoding (nth 1 area)))
 574                   ?c)
 575                (file-exists-p (nnsoup-file prefix)))
 576           (set-buffer (nnsoup-index-buffer prefix))
 577           (widen)
 578           (goto-char (point-min))
 579           (forward-line (- article (caar area)))
 580           (setq beg (read (current-buffer)))
 581           (forward-line 1)
 582           (if (looking-at "[0-9]+")
 583               (progn
 584                 (setq end (read (current-buffer)))
 585                 (set-buffer msg-buf)
 586                 (widen)
 587                 (let ((format (gnus-soup-encoding-format
 588                                (gnus-soup-area-encoding (nth 1 area)))))
 589                   (goto-char end)
 590                   (when (or (= format ?n) (= format ?m))
 591                     (setq end (progn (forward-line -1) (point))))))
 592             (set-buffer msg-buf))
 593           (widen)
 594           (narrow-to-region beg (or end (point-max))))
 595          (t
 596           (set-buffer msg-buf)
 597           (widen)
 598           (unless (assoc (gnus-soup-area-prefix (nth 1 area))
 599                          nnsoup-article-alist)
 600             (nnsoup-dissect-buffer (nth 1 area)))
 601           (let ((entry (assq article (cdr (assoc (gnus-soup-area-prefix
 602                                                   (nth 1 area))
 603                                                  nnsoup-article-alist)))))
 604             (when entry
 605               (narrow-to-region (cadr entry) (caddr entry))))))
 606         (goto-char (point-min))
 607         (if (not head)
 608             ()
 609           (narrow-to-region
 610            (point-min)
 611            (if (search-forward "\n\n" nil t)
 612                (1- (point))
 613              (point-max))))
 614         msg-buf))))
 615
 616 ;;;###autoload
 617 (defun nnsoup-pack-replies ()
 618   "Make an outbound package of SOUP replies."
 619   (interactive)
 620   (unless (file-exists-p nnsoup-replies-directory)
 621     (nnheader-message 5 "No such directory: %s" nnsoup-replies-directory))
 622   ;; Write all data buffers.
 623   (gnus-soup-save-areas)
 624   ;; Write the active file.
 625   (nnsoup-write-active-file)
 626   ;; Write the REPLIES file.
 627   (nnsoup-write-replies)
 628   ;; Check whether there is anything here.
 629   (when (null (directory-files nnsoup-replies-directory nil "\\.MSG$"))
 630     (error "No files to pack"))
 631   ;; Pack all these files into a SOUP packet.
 632   (gnus-soup-pack nnsoup-replies-directory nnsoup-packer))
 633
 634 (defun nnsoup-write-replies ()
 635   "Write the REPLIES file."
 636   (when nnsoup-replies-list
 637     (gnus-soup-write-replies nnsoup-replies-directory nnsoup-replies-list)
 638     (setq nnsoup-replies-list nil)))
 639
 640 (defun nnsoup-article-to-area (article group)
 641   "Return the area that ARTICLE in GROUP is located in."
 642   (let ((areas (cddr (assoc group nnsoup-group-alist))))
 643     (while (and areas (< (cdaar areas) article))
 644       (setq areas (cdr areas)))
 645     (and areas (car areas))))
 646
 647 (defvar nnsoup-old-functions
 648   (list message-send-mail-function message-send-news-function))
 649
 650 ;;;###autoload
 651 (defun nnsoup-set-variables ()
 652   "Use the SOUP methods for posting news and mailing mail."
 653   (interactive)
 654   (setq message-send-news-function 'nnsoup-request-post)
 655   (setq message-send-mail-function 'nnsoup-request-mail))
 656
 657 ;;;###autoload
 658 (defun nnsoup-revert-variables ()
 659   "Revert posting and mailing methods to the standard Emacs methods."
 660   (interactive)
 661   (setq message-send-mail-function (car nnsoup-old-functions))
 662   (setq message-send-news-function (cadr nnsoup-old-functions)))
 663
 664 (defun nnsoup-store-reply (kind)
 665   ;; Mostly stolen from `message.el'.
 666   (require 'mail-utils)
 667   (let ((tembuf (generate-new-buffer " message temp"))
 668         (case-fold-search nil)
 669         (real-header-separator mail-header-separator)
 670         (mail-header-separator "")
 671         delimline
 672         (mailbuf (current-buffer)))
 673     (unwind-protect
 674         (save-excursion
 675           (save-restriction
 676             (message-narrow-to-headers)
 677             (if (equal kind "mail")
 678                 (message-generate-headers message-required-mail-headers)
 679               (message-generate-headers message-required-news-headers)))
 680           (set-buffer tembuf)
 681           (erase-buffer)
 682           (insert-buffer-substring mailbuf)
 683           ;; Remove some headers.
 684           (save-restriction
 685             (message-narrow-to-headers)
 686             ;; Remove some headers.
 687             (message-remove-header message-ignored-mail-headers t))
 688           (goto-char (point-max))
 689           ;; require one newline at the end.
 690           (or (= (preceding-char) ?\n)
 691               (insert ?\n))
 692           (let ((case-fold-search t))
 693             ;; Change header-delimiter to be what sendmail expects.
 694             (goto-char (point-min))
 695             (re-search-forward
 696              (concat "^" (regexp-quote real-header-separator) "\n"))
 697             (replace-match "\n")
 698             (backward-char 1)
 699             (setq delimline (point-marker))
 700             ;; Insert an extra newline if we need it to work around
 701             ;; Sun's bug that swallows newlines.
 702             (goto-char (1+ delimline))
 703             (when (eval message-mailer-swallows-blank-line)
 704               (newline))
 705             (let ((msg-buf
 706                    (gnus-soup-store
 707                     nnsoup-replies-directory
 708                     (nnsoup-kind-to-prefix kind) nil nnsoup-replies-format-type
 709                     nnsoup-replies-index-type))
 710                   (num 0))
 711               (when (and msg-buf (bufferp msg-buf))
 712                 (save-excursion
 713                   (set-buffer msg-buf)
 714                   (goto-char (point-min))
 715                   (while (re-search-forward "^#! *rnews" nil t)
 716                     (incf num))
 717                   (when nnsoup-always-save
 718                     (save-buffer)))
 719                 (nnheader-message 5 "Stored %d messages" num)))
 720             (nnsoup-write-replies)
 721             (kill-buffer tembuf))))))
 722
 723 (defun nnsoup-kind-to-prefix (kind)
 724   (unless nnsoup-replies-list
 725     (setq nnsoup-replies-list
 726           (gnus-soup-parse-replies
 727            (concat nnsoup-replies-directory "REPLIES"))))
 728   (let ((replies nnsoup-replies-list))
 729     (while (and replies
 730                 (not (string= kind (gnus-soup-reply-kind (car replies)))))
 731       (setq replies (cdr replies)))
 732     (if replies
 733         (gnus-soup-reply-prefix (car replies))
 734       (push (vector (gnus-soup-unique-prefix nnsoup-replies-directory)
 735                     kind
 736                     (format "%c%c%c"
 737                             nnsoup-replies-format-type
 738                             nnsoup-replies-index-type
 739                             (if (string= kind "news")
 740                                 ?n ?m)))
 741             nnsoup-replies-list)
 742       (gnus-soup-reply-prefix (car nnsoup-replies-list)))))
 743
 744 (defun nnsoup-make-active ()
 745   "(Re-)create the SOUP active file."
 746   (interactive)
 747   (let ((files (sort (directory-files nnsoup-directory t "IDX$")
 748                      (lambda (f1 f2)
 749                        (< (progn (string-match "/\\([0-9]+\\)\\." f1)
 750                                  (string-to-int (match-string 1 f1)))
 751                           (progn (string-match "/\\([0-9]+\\)\\." f2)
 752                                  (string-to-int (match-string 1 f2)))))))
 753         active group lines ident elem min)
 754     (set-buffer (get-buffer-create " *nnsoup work*"))
 755     (buffer-disable-undo (current-buffer))
 756     (while files
 757       (nnheader-message 5 "Doing %s..." (car files))
 758       (erase-buffer)
 759       (nnheader-insert-file-contents (car files))
 760       (goto-char (point-min))
 761       (if (not (re-search-forward "^[^\t]*\t[^\t]*\t[^\t]*\t[^\t]*\t[^\t]*\t[^\t]*\t[^\t]*\t[^\t]*\t *\\(Xref: \\)? *[^ ]* \\([^ ]+\\):[0-9]" nil t))
 762           (setq group "unknown")
 763         (setq group (match-string 2)))
 764       (setq lines (count-lines (point-min) (point-max)))
 765       (setq ident (progn (string-match
 766                           "/\\([0-9]+\\)\\." (car files))
 767                          (substring
 768                           (car files) (match-beginning 1)
 769                           (match-end 1))))
 770       (if (not (setq elem (assoc group active)))
 771           (push (list group (cons 1 lines)
 772                       (list (cons 1 lines)
 773                             (vector ident group "ncm" "" lines)))
 774                 active)
 775         (nconc elem
 776                (list
 777                 (list (cons (1+ (setq min (cdadr elem)))
 778                             (+ min lines))
 779                       (vector ident group "ncm" "" lines))))
 780         (setcdr (cadr elem) (+ min lines)))
 781       (setq files (cdr files)))
 782     (nnheader-message 5 "")
 783     (setq nnsoup-group-alist active)
 784     (nnsoup-write-active-file t)))
 785
 786 (defun nnsoup-delete-unreferenced-message-files ()
 787   "Delete any *.MSG and *.IDX files that aren't known by nnsoup."
 788   (interactive)
 789   (let* ((known (apply 'nconc (mapcar
 790                                (lambda (ga)
 791                                  (mapcar
 792                                   (lambda (area)
 793                                     (gnus-soup-area-prefix (cadr area)))
 794                                   (cddr ga)))
 795                                nnsoup-group-alist)))
 796          (regexp "\\.MSG$\\|\\.IDX$")
 797          (files (directory-files nnsoup-directory nil regexp))
 798          non-files file)
 799     ;; Find all files that aren't known by nnsoup.
 800     (while (setq file (pop files))
 801       (string-match regexp file)
 802       (unless (member (substring file 0 (match-beginning 0)) known)
 803         (push file non-files)))
 804     ;; Sort and delete the files.
 805     (setq non-files (sort non-files 'string<))
 806     (map-y-or-n-p "Delete file %s? "
 807                   (lambda (file) (delete-file (concat nnsoup-directory file)))
 808                   non-files)))
 809
 810 (provide 'nnsoup)
 811
 812 ;;; nnsoup.el ends here