1 ;;; nndoc.el --- single file access for Gnus
2 ;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
3 ;; Free Software Foundation, Inc.
5 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
6 ;; Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
9 ;; This file is part of GNU Emacs.
11 ;; GNU Emacs is free software; you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation; either version 2, or (at your option)
16 ;; GNU Emacs is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs; see the file COPYING. If not, write to the
23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
24 ;; Boston, MA 02111-1307, USA.
28 ;; For Outlook mail boxes format, see http://mbx2mbox.sourceforge.net/
32 (eval-when-compile (require 'cl))
42 (defvoo nndoc-article-type 'guess
44 One of `mbox', `babyl', `digest', `news', `rnews', `mmdf', `forward',
45 `rfc934', `rfc822-forward', `mime-parts', `standard-digest',
46 `slack-digest', `clari-briefs', `nsmail', `outlook', `oe-dbx',
47 `mailman', `exim-bounce', or `guess'.")
49 (defvoo nndoc-post-type 'mail
50 "*Whether the nndoc group is `mail' or `post'.")
52 (defvoo nndoc-open-document-hook 'nnheader-ms-strip-cr
53 "Hook run after opening a document.
54 The default function removes all trailing carriage returns
57 (defvar nndoc-type-alist
59 (article-begin . "^\^A\^A\^A\^A\n")
60 (body-end . "^\^A\^A\^A\^A\n"))
63 (head-begin . "^ ?\n")
67 (subtype digest guess))
69 (generate-head-function . nndoc-generate-mime-parts-head)
70 (article-transform-function . nndoc-transform-mime-parts))
72 (article-begin . "^From - "))
74 (article-begin . "^Path:"))
76 (article-begin . "^#! *rnews +\\([0-9]+\\) *\n")
77 (body-end-function . nndoc-rnews-body-end))
79 (article-begin-function . nndoc-mbox-article-begin)
80 (body-end-function . nndoc-mbox-body-end))
82 (article-begin . "\^_\^L *\n")
84 (body-begin-function . nndoc-babyl-body-begin)
85 (head-begin-function . nndoc-babyl-head-begin))
87 (article-begin . "^------ This is a copy of the message, including all the headers. ------\n\n")
88 (body-end-function . nndoc-exim-bounce-body-end-function))
90 (article-begin . "^--.*\n+")
92 (prepare-body-function . nndoc-unquote-dashes))
94 (article-begin . "^--__--__--\n\nMessage:")
95 (body-end . "^--__--__--$")
96 (prepare-body-function . nndoc-unquote-dashes))
98 (article-begin . "^ \\*")
99 (body-end . "^\t------*[ \t]^*\n^ \\*")
102 (generate-head-function . nndoc-generate-clari-briefs-head)
103 (article-transform-function . nndoc-transform-clari-briefs))
106 (first-article . ,(concat "^" (make-string 70 ?-) "\n *\n+"))
107 (article-begin . ,(concat "^\n" (make-string 30 ?-) "\n *\n+"))
108 (prepare-body-function . nndoc-unquote-dashes)
109 (body-end-function . nndoc-digest-body-end)
111 (body-begin . "^ *\n")
112 (file-end . "^End of .*digest.*[0-9].*\n\\*\\*\\|^End of.*Digest *$")
113 (subtype digest guess))
115 (article-begin . "^------------------------------*[\n \t]+")
117 (body-end-function . nndoc-digest-body-end)
118 (body-begin . "^ ?$")
119 (file-end . "^End of")
120 (prepare-body-function . nndoc-unquote-dashes)
121 (subtype digest guess))
123 (article-begin . "^\\\\\\\\\n")
124 (head-begin . "^Paper.*:")
125 (head-end . "\\(^\\\\\\\\.*\n\\|-----------------\\)")
127 (body-end . "\\(-------------------------------------------------\\|%-%-%-%-%-%-%-%-%-%-%-%-%-%-\\|%%--%%--%%--%%--%%--%%--%%--%%--\\|%%%---%%%---%%%---%%%---\\)")
128 (file-end . "\\(^Title: Recent Seminal\\|%%%---%%%---%%%---%%%---\\)")
129 (generate-head-function . nndoc-generate-lanl-gov-head)
130 (article-transform-function . nndoc-transform-lanl-gov-announce)
131 (subtype preprints guess))
133 (article-begin . "^\n+")
134 (body-end-function . nndoc-rfc822-forward-body-end-function)
135 (generate-head-function . nndoc-rfc822-forward-generate-head)
136 (generate-article-function . nndoc-rfc822-forward-generate-article))
138 (article-begin-function . nndoc-outlook-article-begin)
140 (oe-dbx ;; Outlook Express DBX format
141 (dissection-function . nndoc-oe-dbx-dissection)
142 (generate-head-function . nndoc-oe-dbx-generate-head)
143 (generate-article-function . nndoc-oe-dbx-generate-article))
145 (article-begin . "^-+ \\(Start of \\)?forwarded message.*\n+")
146 (body-end . "^-+ End \\(of \\)?forwarded message.*$")
147 (prepare-body-function . nndoc-unquote-dashes))
148 (mail-in-mail ;; Wild guess on mailer daemon's messages or others
149 (article-begin-function . nndoc-mail-in-mail-article-begin))
160 (defvar nndoc-binary-file-names ".[Dd][Bb][Xx]$"
161 "Regexp for binary nndoc file names.")
164 (defvoo nndoc-file-begin nil)
165 (defvoo nndoc-first-article nil)
166 (defvoo nndoc-article-begin nil)
167 (defvoo nndoc-head-begin nil)
168 (defvoo nndoc-head-end nil)
169 (defvoo nndoc-file-end nil)
170 (defvoo nndoc-body-begin nil)
171 (defvoo nndoc-body-end-function nil)
172 (defvoo nndoc-body-begin-function nil)
173 (defvoo nndoc-head-begin-function nil)
174 (defvoo nndoc-body-end nil)
175 ;; nndoc-dissection-alist is a list of sublists. Each sublist holds the
176 ;; following items. ARTICLE acts as the association key and is an ordinal
177 ;; starting at 1. HEAD-BEGIN [0], HEAD-END [1], BODY-BEGIN [2] and BODY-END
178 ;; [3] are positions in the `nndoc' buffer. LINE-COUNT [4] is a count of
179 ;; lines in the body. For MIME dissections only, ARTICLE-INSERT [5] and
180 ;; SUMMARY-INSERT [6] give headers to insert for full article or summary line
181 ;; generation, respectively. Other headers usually follow directly from the
182 ;; buffer. Value `nil' means no insert.
183 (defvoo nndoc-dissection-alist nil)
184 (defvoo nndoc-prepare-body-function nil)
185 (defvoo nndoc-generate-head-function nil)
186 (defvoo nndoc-article-transform-function nil)
187 (defvoo nndoc-article-begin-function nil)
188 (defvoo nndoc-generate-article-function nil)
189 (defvoo nndoc-dissection-function nil)
191 (defvoo nndoc-status-string "")
192 (defvoo nndoc-group-alist nil)
193 (defvoo nndoc-current-buffer nil
194 "Current nndoc news buffer.")
195 (defvoo nndoc-address nil)
197 (defconst nndoc-version "nndoc 1.0"
202 ;;; Interface functions
204 (nnoo-define-basics nndoc)
206 (deffoo nndoc-retrieve-headers (articles &optional newsgroup server fetch-old)
207 (when (nndoc-possibly-change-buffer newsgroup server)
209 (set-buffer nntp-server-buffer)
212 (if (stringp (car articles))
215 (when (setq entry (cdr (assq (setq article (pop articles))
216 nndoc-dissection-alist)))
217 (insert (format "221 %d Article retrieved.\n" article))
218 (if nndoc-generate-head-function
219 (funcall nndoc-generate-head-function article)
220 (insert-buffer-substring
221 nndoc-current-buffer (car entry) (nth 1 entry)))
222 (goto-char (point-max))
223 (unless (eq (char-after (1- (point))) ?\n)
225 (insert (format "Lines: %d\n" (nth 4 entry)))
228 (nnheader-fold-continuation-lines)
231 (deffoo nndoc-request-article (article &optional newsgroup server buffer)
232 (nndoc-possibly-change-buffer newsgroup server)
234 (let ((buffer (or buffer nntp-server-buffer))
235 (entry (cdr (assq article nndoc-dissection-alist)))
241 ((stringp article) nil)
242 (nndoc-generate-article-function
243 (funcall nndoc-generate-article-function article))
245 (insert-buffer-substring
246 nndoc-current-buffer (car entry) (nth 1 entry))
249 (insert-buffer-substring
250 nndoc-current-buffer (nth 2 entry) (nth 3 entry))
252 (when nndoc-prepare-body-function
253 (funcall nndoc-prepare-body-function))
254 (when nndoc-article-transform-function
255 (funcall nndoc-article-transform-function article))
258 (deffoo nndoc-request-group (group &optional server dont-check)
262 ((not (nndoc-possibly-change-buffer group server))
263 (nnheader-report 'nndoc "No such file or buffer: %s"
266 (nnheader-report 'nndoc "Selected group %s" group)
268 ((zerop (setq number (length nndoc-dissection-alist)))
269 (nndoc-close-group group)
270 (nnheader-report 'nndoc "No articles in group %s" group))
272 (nnheader-insert "211 %d %d %d %s\n" number 1 number group)))))
274 (deffoo nndoc-request-type (group &optional article)
275 (cond ((not article) 'unknown)
276 (nndoc-post-type nndoc-post-type)
279 (deffoo nndoc-close-group (group &optional server)
280 (nndoc-possibly-change-buffer group server)
281 (and nndoc-current-buffer
282 (buffer-name nndoc-current-buffer)
283 (kill-buffer nndoc-current-buffer))
284 (setq nndoc-group-alist (delq (assoc group nndoc-group-alist)
286 (setq nndoc-current-buffer nil)
287 (nnoo-close-server 'nndoc server)
288 (setq nndoc-dissection-alist nil)
291 (deffoo nndoc-request-list (&optional server)
294 (deffoo nndoc-request-newgroups (date &optional server)
297 (deffoo nndoc-request-list-newsgroups (&optional server)
301 ;;; Internal functions.
303 (defun nndoc-possibly-change-buffer (group source)
306 ;; The current buffer is this group's buffer.
307 ((and nndoc-current-buffer
308 (buffer-name nndoc-current-buffer)
309 (eq nndoc-current-buffer
310 (setq buf (cdr (assoc group nndoc-group-alist))))))
311 ;; We change buffers by taking an old from the group alist.
312 ;; `source' is either a string (a file name) or a buffer object.
314 (setq nndoc-current-buffer buf))
315 ;; It's a totally new group.
316 ((or (and (bufferp nndoc-address)
317 (buffer-name nndoc-address))
318 (and (stringp nndoc-address)
319 (file-exists-p nndoc-address)
320 (not (file-directory-p nndoc-address))))
321 (push (cons group (setq nndoc-current-buffer
323 (concat " *nndoc " group "*"))))
325 (setq nndoc-dissection-alist nil)
327 (set-buffer nndoc-current-buffer)
329 (if (and (stringp nndoc-address)
330 (string-match nndoc-binary-file-names nndoc-address))
331 (let ((nnheader-file-coding-system 'binary))
332 (nnheader-insert-file-contents nndoc-address))
333 (if (stringp nndoc-address)
334 (nnheader-insert-file-contents nndoc-address)
335 (insert-buffer-substring nndoc-address))
336 (run-hooks 'nndoc-open-document-hook)))))
337 ;; Initialize the nndoc structures according to this new document.
338 (when (and nndoc-current-buffer
339 (not nndoc-dissection-alist))
341 (set-buffer nndoc-current-buffer)
343 (if (eq nndoc-article-type 'mime-parts)
344 (nndoc-dissect-mime-parts)
345 (nndoc-dissect-buffer))))
346 (unless nndoc-current-buffer
347 (nndoc-close-server))
348 ;; Return whether we managed to select a file.
349 nndoc-current-buffer))
352 ;;; Deciding what document type we have
355 (defun nndoc-set-delims ()
356 "Set the nndoc delimiter variables according to the type of the document."
357 (let ((vars '(nndoc-file-begin
359 nndoc-article-begin-function
360 nndoc-head-begin nndoc-head-end
361 nndoc-file-end nndoc-article-begin
362 nndoc-body-begin nndoc-body-end-function nndoc-body-end
363 nndoc-prepare-body-function nndoc-article-transform-function
364 nndoc-generate-head-function nndoc-body-begin-function
365 nndoc-head-begin-function
366 nndoc-generate-article-function
367 nndoc-dissection-function)))
369 (set (pop vars) nil)))
371 ;; Guess away until we find the real file type.
372 (while (assq 'guess (setq defs (cdr (assq nndoc-article-type
374 (setq nndoc-article-type (nndoc-guess-type nndoc-article-type)))
375 ;; Set the nndoc variables.
377 (set (intern (format "nndoc-%s" (caar defs)))
380 (defun nndoc-guess-type (subtype)
381 (let ((alist nndoc-type-alist)
382 results result entry)
383 (while (and (not result)
384 (setq entry (pop alist)))
385 (when (memq subtype (or (cdr (assq 'subtype entry)) '(guess)))
386 (goto-char (point-min))
387 ;; Remove blank lines.
388 (while (eq (following-char) ?\n)
390 (when (numberp (setq result (funcall (intern
391 (format "nndoc-%s-type-p"
393 (push (cons result entry) results)
395 (unless (or result results)
396 (error "Document is not of any recognized type"))
399 (cadar (last (sort results 'car-less-than-car))))))
402 ;;; Built-in type predicates and functions
405 (defun nndoc-mbox-type-p ()
406 (when (looking-at message-unix-mail-delimiter)
409 (defun nndoc-mbox-article-begin ()
410 (when (re-search-forward (concat "^" message-unix-mail-delimiter) nil t)
411 (goto-char (match-beginning 0))))
413 (defun nndoc-mbox-body-end ()
418 (and (re-search-backward
419 (concat "^" message-unix-mail-delimiter) nil t)
421 (search-forward "\n\n" beg t)
423 "^Content-Length:[ \t]*\\([0-9]+\\) *$" end t)
424 (setq len (string-to-int (match-string 1)))
425 (search-forward "\n\n" beg t)
426 (unless (= (setq len (+ (point) len)) (point-max))
427 (and (< len (point-max))
429 (looking-at message-unix-mail-delimiter)))))
432 (defun nndoc-mmdf-type-p ()
433 (when (looking-at "\^A\^A\^A\^A$")
436 (defun nndoc-news-type-p ()
437 (when (looking-at "^Path:.*\n")
440 (defun nndoc-rnews-type-p ()
441 (when (looking-at "#! *rnews")
444 (defun nndoc-rnews-body-end ()
445 (and (re-search-backward nndoc-article-begin nil t)
447 (goto-char (+ (point) (string-to-int (match-string 1))))))
449 (defun nndoc-babyl-type-p ()
450 (when (re-search-forward "\^_\^L *\n" nil t)
453 (defun nndoc-babyl-body-begin ()
454 (re-search-forward "^\n" nil t)
455 (when (looking-at "\\*\\*\\* EOOH \\*\\*\\*")
456 (let ((next (or (save-excursion
457 (re-search-forward nndoc-article-begin nil t))
459 (unless (re-search-forward "^\n" next t)
463 (forward-line -1)))))
465 (defun nndoc-babyl-head-begin ()
466 (when (re-search-forward "^[0-9].*\n" nil t)
467 (when (looking-at "\\*\\*\\* EOOH \\*\\*\\*")
471 (defun nndoc-forward-type-p ()
472 (when (and (re-search-forward "^-+ \\(Start of \\)?forwarded message.*\n+"
474 (looking-at "[\r\n]*[a-zA-Z][a-zA-Z0-9-]*:\\|^>?From "))
477 (defun nndoc-rfc934-type-p ()
478 (when (and (re-search-forward "^-+ Start of forwarded.*\n+" nil t)
479 (not (re-search-forward "^Subject:.*digest" nil t))
480 (not (re-search-backward "^From:" nil t 2))
481 (not (re-search-forward "^From:" nil t 2)))
484 (defun nndoc-mailman-type-p ()
485 (when (re-search-forward "^--__--__--\n+" nil t)
488 (defun nndoc-rfc822-forward-type-p ()
490 (message-narrow-to-head)
491 (when (re-search-forward "^Content-Type: *message/rfc822" nil t)
494 (defun nndoc-rfc822-forward-body-end-function ()
495 (goto-char (point-max)))
497 (defun nndoc-rfc822-forward-generate-article (article &optional head)
498 (let ((entry (cdr (assq article nndoc-dissection-alist)))
501 (with-current-buffer nndoc-current-buffer
503 (message-narrow-to-head)
504 (setq encoding (message-fetch-field "content-transfer-encoding"))))
505 (insert-buffer-substring nndoc-current-buffer (car entry) (nth 3 entry))
508 (narrow-to-region begin (point-max))
509 (mm-decode-content-transfer-encoding
510 (intern (downcase (mail-header-strip encoding))))))
513 (when (search-forward "\n\n" nil t)
514 (delete-region (1- (point)) (point-max)))))
517 (defun nndoc-rfc822-forward-generate-head (article)
518 (nndoc-rfc822-forward-generate-article article 'head))
520 (defun nndoc-mime-parts-type-p ()
521 (let ((case-fold-search t)
522 (limit (search-forward "\n\n" nil t)))
523 (goto-char (point-min))
527 ^Content-Type:[ \t]*multipart/[a-z]+ *; *\\(\\(\n[ \t]\\)?.*;\\)*"
528 "\\(\n[ \t]\\)?[ \t]*boundary=\"?[^\"\n]*[^\" \t\n]")
532 (defun nndoc-transform-mime-parts (article)
533 (let* ((entry (cdr (assq article nndoc-dissection-alist)))
534 (headers (nth 5 entry)))
536 (goto-char (point-min))
539 (defun nndoc-generate-mime-parts-head (article)
540 (let* ((entry (cdr (assq article nndoc-dissection-alist)))
541 (headers (nth 6 entry)))
543 (narrow-to-region (point) (point))
544 (insert-buffer-substring
545 nndoc-current-buffer (car entry) (nth 1 entry))
546 (goto-char (point-max)))
550 (defun nndoc-clari-briefs-type-p ()
551 (when (let ((case-fold-search nil))
552 (re-search-forward "^\t[^a-z]+ ([^a-z]+) --" nil t))
555 (defun nndoc-transform-clari-briefs (article)
556 (goto-char (point-min))
557 (when (looking-at " *\\*\\(.*\\)\n")
558 (replace-match "" t t))
559 (nndoc-generate-clari-briefs-head article))
561 (defun nndoc-generate-clari-briefs-head (article)
562 (let ((entry (cdr (assq article nndoc-dissection-alist)))
565 (set-buffer nndoc-current-buffer)
567 (narrow-to-region (car entry) (nth 3 entry))
568 (goto-char (point-min))
569 (when (looking-at " *\\*\\(.*\\)$")
570 (setq subject (match-string 1))
571 (when (string-match "[ \t]+$" subject)
572 (setq subject (substring subject 0 (match-beginning 0)))))
574 (let ((case-fold-search nil))
576 "^\t\\([^a-z]+\\(,[^(]+\\)? ([^a-z]+)\\) --" nil t))
577 (setq from (match-string 1)))))
578 (insert "From: " "clari@clari.net (" (or from "unknown") ")"
579 "\nSubject: " (or subject "(no subject)") "\n")))
581 (defun nndoc-exim-bounce-type-p ()
582 (and (re-search-forward "^------ This is a copy of the message, including all the headers. ------" nil t)
585 (defun nndoc-exim-bounce-body-end-function ()
586 (goto-char (point-max)))
589 (defun nndoc-mime-digest-type-p ()
590 (let ((case-fold-search t)
591 boundary-id b-delimiter entry)
594 (concat "^Content-Type: *multipart/digest;[ \t\n]*[ \t]"
595 "boundary=\"?\\([^\"\n]*[^\" \t\n]\\)")
598 (setq boundary-id (match-string 1)
599 b-delimiter (concat "\n--" boundary-id "[ \t]*$"))
600 (setq entry (assq 'mime-digest nndoc-type-alist))
603 (cons 'head-begin "^ ?\n")
604 (cons 'head-end "^ ?$")
605 (cons 'body-begin "^ ?\n")
606 (cons 'article-begin b-delimiter)
607 (cons 'body-end-function 'nndoc-digest-body-end)
608 (cons 'file-end (concat "^--" boundary-id "--[ \t]*$"))))
611 (defun nndoc-standard-digest-type-p ()
612 (when (and (re-search-forward (concat "^" (make-string 70 ?-) "\n\n") nil t)
614 (concat "\n\n" (make-string 30 ?-) "\n\n") nil t))
617 (defun nndoc-digest-body-end ()
618 (and (re-search-forward nndoc-article-begin nil t)
619 (goto-char (match-beginning 0))))
621 (defun nndoc-slack-digest-type-p ()
624 (defun nndoc-lanl-gov-announce-type-p ()
625 (when (let ((case-fold-search nil))
626 (re-search-forward "^\\\\\\\\\nPaper\\( (\\*cross-listing\\*)\\)?: [a-zA-Z-\\.]+/[0-9]+" nil t))
629 (defun nndoc-transform-lanl-gov-announce (article)
630 (goto-char (point-max))
631 (when (re-search-backward "^\\\\\\\\ +( *\\([^ ]*\\) , *\\([^ ]*\\))" nil t)
632 (replace-match "\n\nGet it at \\1 (\\2)" t nil))
633 (goto-char (point-min))
634 (while (re-search-forward "^\\\\\\\\$" nil t)
635 (replace-match "" t nil))
636 (goto-char (point-min))
637 (when (re-search-forward "^replaced with revised version +\\(.*[^ ]\\) +" nil t)
638 (replace-match "Date: \\1 (revised) " t nil))
639 (goto-char (point-min))
640 (unless (re-search-forward "^From" nil t)
641 (goto-char (point-min))
642 (when (re-search-forward "^Authors?: \\(.*\\)" nil t)
643 (goto-char (point-min))
644 (insert "From: " (match-string 1) "\n"))))
646 (defun nndoc-generate-lanl-gov-head (article)
647 (let ((entry (cdr (assq article nndoc-dissection-alist)))
648 (from "<no address given>")
651 (set-buffer nndoc-current-buffer)
653 (narrow-to-region (car entry) (nth 1 entry))
654 (goto-char (point-min))
655 (when (looking-at "^Paper.*: \\([a-zA-Z-\\.]+/[0-9]+\\)")
656 (setq subject (concat " (" (match-string 1) ")"))
657 (when (re-search-forward "^From: \\(.*\\)" nil t)
658 (setq from (concat "<"
659 (cadr (funcall gnus-extract-address-components
660 (match-string 1))) ">")))
661 (if (re-search-forward "^Date: +\\([^(]*\\)" nil t)
662 (setq date (match-string 1))
663 (when (re-search-forward "^replaced with revised version +\\([^(]*\\)" nil t)
664 (setq date (match-string 1))))
665 (when (re-search-forward "^Title: \\([^\f]*\\)\nAuthors?: \\(.*\\)"
667 (setq subject (concat (match-string 1) subject))
668 (setq from (concat (match-string 2) " " from))))))
669 (while (and from (string-match "(\[^)\]*)" from))
670 (setq from (replace-match "" t t from)))
671 (insert "From: " (or from "unknown")
672 "\nSubject: " (or subject "(no subject)") "\n")
673 (if date (insert "Date: " date))))
675 (defun nndoc-nsmail-type-p ()
676 (when (looking-at "From - ")
679 (defun nndoc-outlook-article-begin ()
680 (prog1 (re-search-forward "From:\\|Received:" nil t)
681 (goto-char (match-beginning 0))))
683 (defun nndoc-outlook-type-p ()
684 ;; FIXME: Is JMF the magic of outlook mailbox? -- ShengHuo.
687 (defun nndoc-oe-dbx-type-p ()
688 (looking-at (string-as-multibyte "\317\255\022\376")))
690 (defun nndoc-read-little-endian ()
691 (+ (prog1 (char-after) (forward-char 1))
692 (lsh (prog1 (char-after) (forward-char 1)) 8)
693 (lsh (prog1 (char-after) (forward-char 1)) 16)
694 (lsh (prog1 (char-after) (forward-char 1)) 24)))
696 (defun nndoc-oe-dbx-decode-block ()
698 (nndoc-read-little-endian) ;; this address
699 (nndoc-read-little-endian) ;; next address offset
700 (nndoc-read-little-endian) ;; blocksize
701 (nndoc-read-little-endian))) ;; next address
703 (defun nndoc-oe-dbx-dissection ()
704 (let ((i 0) blk p tp)
705 (goto-char 60117) ;; 0x0000EAD4+1
708 (setq blk (nndoc-oe-dbx-decode-block)))
709 (while (and blk (> (car blk) 0) (or (zerop (nth 3 blk))
711 (push (list (incf i) p nil nil nil 0) nndoc-dissection-alist)
712 (while (and (> (car blk) 0) (> (nth 3 blk) p))
713 (goto-char (1+ (nth 3 blk)))
714 (setq blk (nndoc-oe-dbx-decode-block)))
715 (if (or (<= (car blk) p)
717 (not (zerop (nth 3 blk))))
719 (setq tp (+ (car blk) (nth 1 blk) 17))
720 (if (or (<= tp p) (>= tp (point-max)))
724 blk (nndoc-oe-dbx-decode-block)))))))
726 (defun nndoc-oe-dbx-generate-article (article &optional head)
727 (let ((entry (cdr (assq article nndoc-dissection-alist)))
728 (cur (current-buffer))
731 (with-current-buffer nndoc-current-buffer
733 (while (> p (point-min))
735 (setq blk (nndoc-oe-dbx-decode-block))
737 (with-current-buffer cur
738 (insert-buffer-substring nndoc-current-buffer p (+ p (nth 2 blk))))
739 (setq p (1+ (nth 3 blk)))))
741 (while (re-search-forward "\r$" nil t)
742 (delete-backward-char 1))
745 (when (search-forward "\n\n" nil t)
746 (setcar (cddddr entry) (count-lines (point) (point-max)))
747 (delete-region (1- (point)) (point-max))))
750 (defun nndoc-oe-dbx-generate-head (article)
751 (nndoc-oe-dbx-generate-article article 'head))
753 (defun nndoc-mail-in-mail-type-p ()
757 (while (re-search-forward "\n\n[-A-Za-z0-9]+:" nil t)
760 (while (looking-at "[ \t]\\|[-A-Za-z0-9]+:")
761 (if (looking-at "[-A-Za-z0-9]+:")
762 (setq found (1+ found)))
764 (if (and (> found 0) (looking-at "\n"))
768 (defun nndoc-mail-in-mail-article-begin ()
771 (while (re-search-forward "\n\n\\([-A-Za-z0-9]+:\\)" nil t)
773 (setq point (match-beginning 1))
775 (while (looking-at "[ \t]\\|[-A-Za-z0-9]+:")
776 (if (looking-at "[-A-Za-z0-9]+:")
777 (setq found (1+ found)))
779 (if (and (> found 0) (looking-at "\n"))
784 (deffoo nndoc-request-accept-article (group &optional server last)
788 ;;; Functions for dissecting the documents
791 (defun nndoc-search (regexp)
793 (re-search-forward regexp nil t)
794 (beginning-of-line)))
796 (defun nndoc-dissect-buffer ()
797 "Go through the document and partition it into heads/bodies/articles."
800 art-begin head-begin head-end body-begin body-end)
801 (setq nndoc-dissection-alist nil)
803 (set-buffer nndoc-current-buffer)
804 (goto-char (point-min))
805 ;; Remove blank lines.
806 (while (eq (following-char) ?\n)
808 (if nndoc-dissection-function
809 (funcall nndoc-dissection-function)
810 ;; Find the beginning of the file.
811 (when nndoc-file-begin
812 (nndoc-search nndoc-file-begin))
813 ;; Go through the file.
814 (while (if (and first nndoc-first-article)
815 (nndoc-search nndoc-first-article)
817 (goto-char art-begin)
818 (nndoc-article-begin)))
821 (cond (nndoc-head-begin-function
822 (funcall nndoc-head-begin-function))
824 (nndoc-search nndoc-head-begin)))
827 (looking-at nndoc-file-end)))
828 (goto-char (point-max))
829 (setq head-begin (point))
830 (nndoc-search (or nndoc-head-end "^$"))
831 (setq head-end (point))
832 (if nndoc-body-begin-function
833 (funcall nndoc-body-begin-function)
834 (nndoc-search (or nndoc-body-begin "^\n")))
835 (setq body-begin (point))
836 (or (and nndoc-body-end-function
837 (funcall nndoc-body-end-function))
839 (nndoc-search nndoc-body-end))
840 (and (nndoc-article-begin)
841 (setq art-begin (point)))
843 (goto-char (point-max))
845 (and (re-search-backward nndoc-file-end nil t)
846 (beginning-of-line)))))
847 (setq body-end (point))
848 (push (list (incf i) head-begin head-end body-begin body-end
849 (count-lines body-begin body-end))
850 nndoc-dissection-alist)))))))
852 (defun nndoc-article-begin ()
853 (if nndoc-article-begin-function
854 (funcall nndoc-article-begin-function)
856 (nndoc-search nndoc-article-begin))))
858 (defun nndoc-unquote-dashes ()
859 "Unquote quoted non-separators in digests."
860 (while (re-search-forward "^- -"nil t)
861 (replace-match "-" t t)))
863 ;; Against compiler warnings.
864 (defvar nndoc-mime-split-ordinal)
866 (defun nndoc-dissect-mime-parts ()
867 "Go through a MIME composite article and partition it into sub-articles.
868 When a MIME entity contains sub-entities, dissection produces one article for
869 the header of this entity, and one article per sub-entity."
870 (setq nndoc-dissection-alist nil
871 nndoc-mime-split-ordinal 0)
873 (set-buffer nndoc-current-buffer)
874 (nndoc-dissect-mime-parts-sub (point-min) (point-max) nil nil nil)))
876 (defun nndoc-dissect-mime-parts-sub (head-begin body-end article-insert
878 "Dissect an entity, within a composite MIME message.
879 The complete message or MIME entity extends from HEAD-BEGIN to BODY-END.
880 ARTICLE-INSERT should be added at beginning for generating a full article.
881 The string POSITION holds a dotted decimal representation of the article
882 position in the hierarchical structure, it is nil for the outer entity.
883 PARENT is the message-ID of the parent summary line, or nil for none."
884 (let ((case-fold-search t)
885 (message-id (nnmail-message-id))
886 head-end body-begin summary-insert message-rfc822 multipart-any
887 subject content-type type subtype boundary-regexp)
888 ;; Gracefully handle a missing body.
889 (goto-char head-begin)
890 (if (or (and (eq (char-after) ?\n) (or (forward-char 1) t))
891 (search-forward "\n\n" body-end t))
892 (setq head-end (1- (point))
894 (setq head-end body-end
895 body-begin body-end))
896 (narrow-to-region head-begin head-end)
897 ;; Save MIME attributes.
898 (goto-char head-begin)
899 (setq content-type (message-fetch-field "Content-Type"))
902 "^ *\\([^ \t\n/;]+\\)/\\([^ \t\n/;]+\\)" content-type)
903 (setq type (downcase (match-string 1 content-type))
904 subtype (downcase (match-string 2 content-type))
905 message-rfc822 (and (string= type "message")
906 (string= subtype "rfc822"))
907 multipart-any (string= type "multipart")))
908 (when (string-match ";[ \t\n]*name=\\([^ \t\n;]+\\)" content-type)
909 (setq subject (match-string 1 content-type)))
910 (when (string-match "boundary=\"?\\([^\"\n]*[^\" \t\n]\\)" content-type)
911 (setq boundary-regexp (concat "^--"
913 (match-string 1 content-type))
914 "\\(--\\)?[ \t]*\n"))))
916 (when (or multipart-any (not article-insert))
917 (setq subject (message-fetch-field "Subject"))))
921 ;; Prepare the article and summary inserts.
922 (unless article-insert
923 (setq article-insert (buffer-string)
924 head-end head-begin))
926 (unless (string-match "MIME-Version:" article-insert)
928 (concat article-insert "MIME-Version: 1.0\n")))
929 (setq summary-insert article-insert)
930 ;; - summary Subject.
932 (let ((line (concat "Subject: <" position
933 (and position multipart-any ".")
934 (and multipart-any "*")
935 (and (or position multipart-any) " ")
936 (cond ((string= subtype "plain") type)
937 ((string= subtype "basic") type)
943 (if (string-match "Subject:.*\n\\([ \t].*\n\\)*" summary-insert)
944 (replace-match line t t summary-insert)
945 (concat summary-insert line))))
946 ;; - summary Message-ID.
948 (let ((line (concat "Message-ID: " message-id "\n")))
949 (if (string-match "Message-ID:.*\n\\([ \t].*\n\\)*" summary-insert)
950 (replace-match line t t summary-insert)
951 (concat summary-insert line))))
952 ;; - summary References.
955 (let ((line (concat "References: " parent "\n")))
956 (if (string-match "References:.*\n\\([ \t].*\n\\)*"
958 (replace-match line t t summary-insert)
959 (concat summary-insert line)))))
960 ;; Generate dissection information for this entity.
961 (push (list (incf nndoc-mime-split-ordinal)
962 head-begin head-end body-begin body-end
963 (count-lines body-begin body-end)
964 article-insert summary-insert)
965 nndoc-dissection-alist)
966 ;; Recurse for all sub-entities, if any.
971 (nndoc-dissect-mime-parts-sub body-begin body-end nil
972 position message-id)))
973 ((and multipart-any boundary-regexp)
974 (let ((part-counter 0)
975 part-begin part-end eof-flag)
976 (while (string-match "\
977 ^\\(Lines\\|Content-\\(Type\\|Transfer-Encoding\\|Disposition\\)\\):.*\n\\([ \t].*\n\\)*"
979 (setq article-insert (replace-match "" t t article-insert)))
980 (let ((case-fold-search nil))
981 (goto-char body-begin)
982 (setq eof-flag (not (re-search-forward boundary-regexp body-end t)))
983 (while (not eof-flag)
984 (setq part-begin (point))
985 (cond ((re-search-forward boundary-regexp body-end t)
986 (or (not (match-string 1))
987 (string= (match-string 1) "")
990 (setq part-end (point))
992 (t (setq part-end body-end
995 (nndoc-dissect-mime-parts-sub
996 part-begin part-end article-insert
999 (format "%d" (incf part-counter)))
1003 (defun nndoc-add-type (definition &optional position)
1004 "Add document DEFINITION to the list of nndoc document definitions.
1005 If POSITION is nil or `last', the definition will be added
1006 as the last checked definition, if t or `first', add as the
1007 first definition, and if any other symbol, add after that
1008 symbol in the alist."
1009 ;; First remove any old instances.
1010 (gnus-pull (car definition) nndoc-type-alist)
1011 ;; Then enter the new definition in the proper place.
1013 ((or (null position) (eq position 'last))
1014 (setq nndoc-type-alist (nconc nndoc-type-alist (list definition))))
1015 ((or (eq position t) (eq position 'first))
1016 (push definition nndoc-type-alist))
1018 (let ((list (memq (assq position nndoc-type-alist)
1021 (error "No such position: %s" position))
1022 (setcdr list (cons definition (cdr list)))))))
1026 ;;; nndoc.el ends here