1 ;;; nndoc.el --- single file access for Gnus
3 ;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
4 ;; 2004, 2005 Free Software Foundation, Inc.
6 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
7 ;; Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
10 ;; This file is part of GNU Emacs.
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)
17 ;; GNU Emacs is distributed in the hope that it will be useful,
18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 ;; GNU General Public License for more details.
22 ;; You should have received a copy of the GNU General Public License
23 ;; along with GNU Emacs; see the file COPYING. If not, write to the
24 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
25 ;; Boston, MA 02110-1301, USA.
29 ;; For Outlook mail boxes format, see http://mbx2mbox.sourceforge.net/
33 (eval-when-compile (require 'cl))
43 (defvoo nndoc-article-type 'guess
45 One of `mbox', `babyl', `digest', `news', `rnews', `mmdf', `forward',
46 `rfc934', `rfc822-forward', `mime-parts', `standard-digest',
47 `slack-digest', `clari-briefs', `nsmail', `outlook', `oe-dbx',
48 `mailman', `exim-bounce', or `guess'.")
50 (defvoo nndoc-post-type 'mail
51 "*Whether the nndoc group is `mail' or `post'.")
53 (defvoo nndoc-open-document-hook 'nnheader-ms-strip-cr
54 "Hook run after opening a document.
55 The default function removes all trailing carriage returns
58 (defvar nndoc-type-alist
60 (article-begin . "^\^A\^A\^A\^A\n")
61 (body-end . "^\^A\^A\^A\^A\n"))
64 (head-begin . "^ ?\n")
68 (subtype digest guess))
70 (generate-head-function . nndoc-generate-mime-parts-head)
71 (article-transform-function . nndoc-transform-mime-parts))
73 (article-begin . "^From - "))
75 (article-begin . "^Path:"))
77 (article-begin . "^#! *rnews +\\([0-9]+\\) *\n")
78 (body-end-function . nndoc-rnews-body-end))
80 (article-begin-function . nndoc-mbox-article-begin)
81 (body-end-function . nndoc-mbox-body-end))
83 (article-begin . "\^_\^L *\n")
85 (body-begin-function . nndoc-babyl-body-begin)
86 (head-begin-function . nndoc-babyl-head-begin))
88 (article-begin . "^------ This is a copy of the message, including all the headers. ------\n\n")
89 (body-end-function . nndoc-exim-bounce-body-end-function))
91 (article-begin . "^--.*\n+")
93 (prepare-body-function . nndoc-unquote-dashes))
95 (article-begin . "^--__--__--\n\nMessage:")
96 (body-end . "^--__--__--$")
97 (prepare-body-function . nndoc-unquote-dashes))
99 (article-begin . "^ \\*")
100 (body-end . "^\t------*[ \t]^*\n^ \\*")
103 (generate-head-function . nndoc-generate-clari-briefs-head)
104 (article-transform-function . nndoc-transform-clari-briefs))
107 (first-article . ,(concat "^" (make-string 70 ?-) "\n *\n+"))
108 (article-begin . ,(concat "^\n" (make-string 30 ?-) "\n *\n+"))
109 (prepare-body-function . nndoc-unquote-dashes)
110 (body-end-function . nndoc-digest-body-end)
112 (body-begin . "^ *\n")
113 (file-end . "^End of .*digest.*[0-9].*\n\\*\\*\\|^End of.*Digest *$")
114 (subtype digest guess))
116 (article-begin . "^------------------------------*[\n \t]+")
118 (body-end-function . nndoc-digest-body-end)
119 (body-begin . "^ ?$")
120 (file-end . "^End of")
121 (prepare-body-function . nndoc-unquote-dashes)
122 (subtype digest guess))
124 (article-begin . "^\\\\\\\\\n")
125 (head-begin . "^Paper.*:")
126 (head-end . "\\(^\\\\\\\\.*\n\\|-----------------\\)")
128 (body-end . "\\(-------------------------------------------------\\|%-%-%-%-%-%-%-%-%-%-%-%-%-%-\\|%%--%%--%%--%%--%%--%%--%%--%%--\\|%%%---%%%---%%%---%%%---\\)")
129 (file-end . "\\(^Title: Recent Seminal\\|%%%---%%%---%%%---%%%---\\)")
130 (generate-head-function . nndoc-generate-lanl-gov-head)
131 (article-transform-function . nndoc-transform-lanl-gov-announce)
132 (subtype preprints guess))
134 (article-begin . "^\n+")
135 (body-end-function . nndoc-rfc822-forward-body-end-function)
136 (generate-head-function . nndoc-rfc822-forward-generate-head)
137 (generate-article-function . nndoc-rfc822-forward-generate-article))
139 (article-begin-function . nndoc-outlook-article-begin)
141 (oe-dbx ;; Outlook Express DBX format
142 (dissection-function . nndoc-oe-dbx-dissection)
143 (generate-head-function . nndoc-oe-dbx-generate-head)
144 (generate-article-function . nndoc-oe-dbx-generate-article))
146 (article-begin . "^-+ \\(Start of \\)?forwarded message.*\n+")
147 (body-end . "^-+ End \\(of \\)?forwarded message.*$")
148 (prepare-body-function . nndoc-unquote-dashes))
149 (mail-in-mail ;; Wild guess on mailer daemon's messages or others
150 (article-begin-function . nndoc-mail-in-mail-article-begin))
161 (defvar nndoc-binary-file-names ".[Dd][Bb][Xx]$"
162 "Regexp for binary nndoc file names.")
165 (defvoo nndoc-file-begin nil)
166 (defvoo nndoc-first-article nil)
167 (defvoo nndoc-article-begin nil)
168 (defvoo nndoc-head-begin nil)
169 (defvoo nndoc-head-end nil)
170 (defvoo nndoc-file-end nil)
171 (defvoo nndoc-body-begin nil)
172 (defvoo nndoc-body-end-function nil)
173 (defvoo nndoc-body-begin-function nil)
174 (defvoo nndoc-head-begin-function nil)
175 (defvoo nndoc-body-end nil)
176 ;; nndoc-dissection-alist is a list of sublists. Each sublist holds the
177 ;; following items. ARTICLE acts as the association key and is an ordinal
178 ;; starting at 1. HEAD-BEGIN [0], HEAD-END [1], BODY-BEGIN [2] and BODY-END
179 ;; [3] are positions in the `nndoc' buffer. LINE-COUNT [4] is a count of
180 ;; lines in the body. For MIME dissections only, ARTICLE-INSERT [5] and
181 ;; SUMMARY-INSERT [6] give headers to insert for full article or summary line
182 ;; generation, respectively. Other headers usually follow directly from the
183 ;; buffer. Value `nil' means no insert.
184 (defvoo nndoc-dissection-alist nil)
185 (defvoo nndoc-prepare-body-function nil)
186 (defvoo nndoc-generate-head-function nil)
187 (defvoo nndoc-article-transform-function nil)
188 (defvoo nndoc-article-begin-function nil)
189 (defvoo nndoc-generate-article-function nil)
190 (defvoo nndoc-dissection-function nil)
192 (defvoo nndoc-status-string "")
193 (defvoo nndoc-group-alist nil)
194 (defvoo nndoc-current-buffer nil
195 "Current nndoc news buffer.")
196 (defvoo nndoc-address nil)
198 (defconst nndoc-version "nndoc 1.0"
203 ;;; Interface functions
205 (nnoo-define-basics nndoc)
207 (deffoo nndoc-retrieve-headers (articles &optional newsgroup server fetch-old)
208 (when (nndoc-possibly-change-buffer newsgroup server)
210 (set-buffer nntp-server-buffer)
213 (if (stringp (car articles))
216 (when (setq entry (cdr (assq (setq article (pop articles))
217 nndoc-dissection-alist)))
218 (insert (format "221 %d Article retrieved.\n" article))
219 (if nndoc-generate-head-function
220 (funcall nndoc-generate-head-function article)
221 (insert-buffer-substring
222 nndoc-current-buffer (car entry) (nth 1 entry)))
223 (goto-char (point-max))
224 (unless (eq (char-after (1- (point))) ?\n)
226 (insert (format "Lines: %d\n" (nth 4 entry)))
229 (nnheader-fold-continuation-lines)
232 (deffoo nndoc-request-article (article &optional newsgroup server buffer)
233 (nndoc-possibly-change-buffer newsgroup server)
235 (let ((buffer (or buffer nntp-server-buffer))
236 (entry (cdr (assq article nndoc-dissection-alist)))
242 ((stringp article) nil)
243 (nndoc-generate-article-function
244 (funcall nndoc-generate-article-function article))
246 (insert-buffer-substring
247 nndoc-current-buffer (car entry) (nth 1 entry))
250 (insert-buffer-substring
251 nndoc-current-buffer (nth 2 entry) (nth 3 entry))
253 (when nndoc-prepare-body-function
254 (funcall nndoc-prepare-body-function))
255 (when nndoc-article-transform-function
256 (funcall nndoc-article-transform-function article))
259 (deffoo nndoc-request-group (group &optional server dont-check)
263 ((not (nndoc-possibly-change-buffer group server))
264 (nnheader-report 'nndoc "No such file or buffer: %s"
267 (nnheader-report 'nndoc "Selected group %s" group)
269 ((zerop (setq number (length nndoc-dissection-alist)))
270 (nndoc-close-group group)
271 (nnheader-report 'nndoc "No articles in group %s" group))
273 (nnheader-insert "211 %d %d %d %s\n" number 1 number group)))))
275 (deffoo nndoc-request-type (group &optional article)
276 (cond ((not article) 'unknown)
277 (nndoc-post-type nndoc-post-type)
280 (deffoo nndoc-close-group (group &optional server)
281 (nndoc-possibly-change-buffer group server)
282 (and nndoc-current-buffer
283 (buffer-name nndoc-current-buffer)
284 (kill-buffer nndoc-current-buffer))
285 (setq nndoc-group-alist (delq (assoc group nndoc-group-alist)
287 (setq nndoc-current-buffer nil)
288 (nnoo-close-server 'nndoc server)
289 (setq nndoc-dissection-alist nil)
292 (deffoo nndoc-request-list (&optional server)
295 (deffoo nndoc-request-newgroups (date &optional server)
298 (deffoo nndoc-request-list-newsgroups (&optional server)
302 ;;; Internal functions.
304 (defun nndoc-possibly-change-buffer (group source)
307 ;; The current buffer is this group's buffer.
308 ((and nndoc-current-buffer
309 (buffer-name nndoc-current-buffer)
310 (eq nndoc-current-buffer
311 (setq buf (cdr (assoc group nndoc-group-alist))))))
312 ;; We change buffers by taking an old from the group alist.
313 ;; `source' is either a string (a file name) or a buffer object.
315 (setq nndoc-current-buffer buf))
316 ;; It's a totally new group.
317 ((or (and (bufferp nndoc-address)
318 (buffer-name nndoc-address))
319 (and (stringp nndoc-address)
320 (file-exists-p nndoc-address)
321 (not (file-directory-p nndoc-address))))
322 (push (cons group (setq nndoc-current-buffer
324 (concat " *nndoc " group "*"))))
326 (setq nndoc-dissection-alist nil)
328 (set-buffer nndoc-current-buffer)
330 (if (and (stringp nndoc-address)
331 (string-match nndoc-binary-file-names nndoc-address))
332 (let ((nnheader-file-coding-system 'binary))
333 (nnheader-insert-file-contents nndoc-address))
334 (if (stringp nndoc-address)
335 (nnheader-insert-file-contents nndoc-address)
336 (insert-buffer-substring nndoc-address))
337 (run-hooks 'nndoc-open-document-hook)))))
338 ;; Initialize the nndoc structures according to this new document.
339 (when (and nndoc-current-buffer
340 (not nndoc-dissection-alist))
342 (set-buffer nndoc-current-buffer)
344 (if (eq nndoc-article-type 'mime-parts)
345 (nndoc-dissect-mime-parts)
346 (nndoc-dissect-buffer))))
347 (unless nndoc-current-buffer
348 (nndoc-close-server))
349 ;; Return whether we managed to select a file.
350 nndoc-current-buffer))
353 ;;; Deciding what document type we have
356 (defun nndoc-set-delims ()
357 "Set the nndoc delimiter variables according to the type of the document."
358 (let ((vars '(nndoc-file-begin
360 nndoc-article-begin-function
361 nndoc-head-begin nndoc-head-end
362 nndoc-file-end nndoc-article-begin
363 nndoc-body-begin nndoc-body-end-function nndoc-body-end
364 nndoc-prepare-body-function nndoc-article-transform-function
365 nndoc-generate-head-function nndoc-body-begin-function
366 nndoc-head-begin-function
367 nndoc-generate-article-function
368 nndoc-dissection-function)))
370 (set (pop vars) nil)))
372 ;; Guess away until we find the real file type.
373 (while (assq 'guess (setq defs (cdr (assq nndoc-article-type
375 (setq nndoc-article-type (nndoc-guess-type nndoc-article-type)))
376 ;; Set the nndoc variables.
378 (set (intern (format "nndoc-%s" (caar defs)))
381 (defun nndoc-guess-type (subtype)
382 (let ((alist nndoc-type-alist)
383 results result entry)
384 (while (and (not result)
385 (setq entry (pop alist)))
386 (when (memq subtype (or (cdr (assq 'subtype entry)) '(guess)))
387 (goto-char (point-min))
388 ;; Remove blank lines.
389 (while (eq (following-char) ?\n)
391 (when (numberp (setq result (funcall (intern
392 (format "nndoc-%s-type-p"
394 (push (cons result entry) results)
396 (unless (or result results)
397 (error "Document is not of any recognized type"))
400 (cadar (last (sort results 'car-less-than-car))))))
403 ;;; Built-in type predicates and functions
406 (defun nndoc-mbox-type-p ()
407 (when (looking-at message-unix-mail-delimiter)
410 (defun nndoc-mbox-article-begin ()
411 (when (re-search-forward (concat "^" message-unix-mail-delimiter) nil t)
412 (goto-char (match-beginning 0))))
414 (defun nndoc-mbox-body-end ()
419 (and (re-search-backward
420 (concat "^" message-unix-mail-delimiter) nil t)
422 (search-forward "\n\n" beg t)
424 "^Content-Length:[ \t]*\\([0-9]+\\) *$" end t)
425 (setq len (string-to-number (match-string 1)))
426 (search-forward "\n\n" beg t)
427 (unless (= (setq len (+ (point) len)) (point-max))
428 (and (< len (point-max))
430 (looking-at message-unix-mail-delimiter)))))
433 (defun nndoc-mmdf-type-p ()
434 (when (looking-at "\^A\^A\^A\^A$")
437 (defun nndoc-news-type-p ()
438 (when (looking-at "^Path:.*\n")
441 (defun nndoc-rnews-type-p ()
442 (when (looking-at "#! *rnews")
445 (defun nndoc-rnews-body-end ()
446 (and (re-search-backward nndoc-article-begin nil t)
448 (goto-char (+ (point) (string-to-number (match-string 1))))))
450 (defun nndoc-babyl-type-p ()
451 (when (re-search-forward "\^_\^L *\n" nil t)
454 (defun nndoc-babyl-body-begin ()
455 (re-search-forward "^\n" nil t)
456 (when (looking-at "\\*\\*\\* EOOH \\*\\*\\*")
457 (let ((next (or (save-excursion
458 (re-search-forward nndoc-article-begin nil t))
460 (unless (re-search-forward "^\n" next t)
464 (forward-line -1)))))
466 (defun nndoc-babyl-head-begin ()
467 (when (re-search-forward "^[0-9].*\n" nil t)
468 (when (looking-at "\\*\\*\\* EOOH \\*\\*\\*")
472 (defun nndoc-forward-type-p ()
473 (when (and (re-search-forward "^-+ \\(Start of \\)?forwarded message.*\n+"
475 (looking-at "[\r\n]*[a-zA-Z][a-zA-Z0-9-]*:\\|^>?From "))
478 (defun nndoc-rfc934-type-p ()
479 (when (and (re-search-forward "^-+ Start of forwarded.*\n+" nil t)
480 (not (re-search-forward "^Subject:.*digest" nil t))
481 (not (re-search-backward "^From:" nil t 2))
482 (not (re-search-forward "^From:" nil t 2)))
485 (defun nndoc-mailman-type-p ()
486 (when (re-search-forward "^--__--__--\n+" nil t)
489 (defun nndoc-rfc822-forward-type-p ()
491 (message-narrow-to-head)
492 (when (re-search-forward "^Content-Type: *message/rfc822" nil t)
495 (defun nndoc-rfc822-forward-body-end-function ()
496 (goto-char (point-max)))
498 (defun nndoc-rfc822-forward-generate-article (article &optional head)
499 (let ((entry (cdr (assq article nndoc-dissection-alist)))
502 (with-current-buffer nndoc-current-buffer
504 (message-narrow-to-head)
505 (setq encoding (message-fetch-field "content-transfer-encoding"))))
506 (insert-buffer-substring nndoc-current-buffer (car entry) (nth 3 entry))
509 (narrow-to-region begin (point-max))
510 (mm-decode-content-transfer-encoding
511 (intern (downcase (mail-header-strip encoding))))))
514 (when (search-forward "\n\n" nil t)
515 (delete-region (1- (point)) (point-max)))))
518 (defun nndoc-rfc822-forward-generate-head (article)
519 (nndoc-rfc822-forward-generate-article article 'head))
521 (defun nndoc-mime-parts-type-p ()
522 (let ((case-fold-search t)
523 (limit (search-forward "\n\n" nil t)))
524 (goto-char (point-min))
528 ^Content-Type:[ \t]*multipart/[a-z]+ *; *\\(\\(\n[ \t]\\)?.*;\\)*"
529 "\\(\n[ \t]\\)?[ \t]*boundary=\"?[^\"\n]*[^\" \t\n]")
533 (defun nndoc-transform-mime-parts (article)
534 (let* ((entry (cdr (assq article nndoc-dissection-alist)))
535 (headers (nth 5 entry)))
537 (goto-char (point-min))
540 (defun nndoc-generate-mime-parts-head (article)
541 (let* ((entry (cdr (assq article nndoc-dissection-alist)))
542 (headers (nth 6 entry)))
544 (narrow-to-region (point) (point))
545 (insert-buffer-substring
546 nndoc-current-buffer (car entry) (nth 1 entry))
547 (goto-char (point-max)))
551 (defun nndoc-clari-briefs-type-p ()
552 (when (let ((case-fold-search nil))
553 (re-search-forward "^\t[^a-z]+ ([^a-z]+) --" nil t))
556 (defun nndoc-transform-clari-briefs (article)
557 (goto-char (point-min))
558 (when (looking-at " *\\*\\(.*\\)\n")
559 (replace-match "" t t))
560 (nndoc-generate-clari-briefs-head article))
562 (defun nndoc-generate-clari-briefs-head (article)
563 (let ((entry (cdr (assq article nndoc-dissection-alist)))
566 (set-buffer nndoc-current-buffer)
568 (narrow-to-region (car entry) (nth 3 entry))
569 (goto-char (point-min))
570 (when (looking-at " *\\*\\(.*\\)$")
571 (setq subject (match-string 1))
572 (when (string-match "[ \t]+$" subject)
573 (setq subject (substring subject 0 (match-beginning 0)))))
575 (let ((case-fold-search nil))
577 "^\t\\([^a-z]+\\(,[^(]+\\)? ([^a-z]+)\\) --" nil t))
578 (setq from (match-string 1)))))
579 (insert "From: " "clari@clari.net (" (or from "unknown") ")"
580 "\nSubject: " (or subject "(no subject)") "\n")))
582 (defun nndoc-exim-bounce-type-p ()
583 (and (re-search-forward "^------ This is a copy of the message, including all the headers. ------" nil t)
586 (defun nndoc-exim-bounce-body-end-function ()
587 (goto-char (point-max)))
590 (defun nndoc-mime-digest-type-p ()
591 (let ((case-fold-search t)
592 boundary-id b-delimiter entry)
595 (concat "^Content-Type: *multipart/digest;[ \t\n]*[ \t]"
596 "boundary=\"?\\([^\"\n]*[^\" \t\n]\\)")
599 (setq boundary-id (match-string 1)
600 b-delimiter (concat "\n--" boundary-id "[ \t]*$"))
601 (setq entry (assq 'mime-digest nndoc-type-alist))
604 (cons 'head-begin "^ ?\n")
605 (cons 'head-end "^ ?$")
606 (cons 'body-begin "^ ?\n")
607 (cons 'article-begin b-delimiter)
608 (cons 'body-end-function 'nndoc-digest-body-end)
609 (cons 'file-end (concat "^--" boundary-id "--[ \t]*$"))))
612 (defun nndoc-standard-digest-type-p ()
613 (when (and (re-search-forward (concat "^" (make-string 70 ?-) "\n\n") nil t)
615 (concat "\n\n" (make-string 30 ?-) "\n\n") nil t))
618 (defun nndoc-digest-body-end ()
619 (and (re-search-forward nndoc-article-begin nil t)
620 (goto-char (match-beginning 0))))
622 (defun nndoc-slack-digest-type-p ()
625 (defun nndoc-lanl-gov-announce-type-p ()
626 (when (let ((case-fold-search nil))
627 (re-search-forward "^\\\\\\\\\nPaper\\( (\\*cross-listing\\*)\\)?: [a-zA-Z-\\.]+/[0-9]+" nil t))
630 (defun nndoc-transform-lanl-gov-announce (article)
631 (goto-char (point-max))
632 (when (re-search-backward "^\\\\\\\\ +( *\\([^ ]*\\) , *\\([^ ]*\\))" nil t)
633 (replace-match "\n\nGet it at \\1 (\\2)" t nil))
634 (goto-char (point-min))
635 (while (re-search-forward "^\\\\\\\\$" nil t)
636 (replace-match "" t nil))
637 (goto-char (point-min))
638 (when (re-search-forward "^replaced with revised version +\\(.*[^ ]\\) +" nil t)
639 (replace-match "Date: \\1 (revised) " t nil))
640 (goto-char (point-min))
641 (unless (re-search-forward "^From" nil t)
642 (goto-char (point-min))
643 (when (re-search-forward "^Authors?: \\(.*\\)" nil t)
644 (goto-char (point-min))
645 (insert "From: " (match-string 1) "\n"))))
647 (defun nndoc-generate-lanl-gov-head (article)
648 (let ((entry (cdr (assq article nndoc-dissection-alist)))
649 (from "<no address given>")
652 (set-buffer nndoc-current-buffer)
654 (narrow-to-region (car entry) (nth 1 entry))
655 (goto-char (point-min))
656 (when (looking-at "^Paper.*: \\([a-zA-Z-\\.]+/[0-9]+\\)")
657 (setq subject (concat " (" (match-string 1) ")"))
658 (when (re-search-forward "^From: \\(.*\\)" nil t)
659 (setq from (concat "<"
660 (cadr (funcall gnus-extract-address-components
661 (match-string 1))) ">")))
662 (if (re-search-forward "^Date: +\\([^(]*\\)" nil t)
663 (setq date (match-string 1))
664 (when (re-search-forward "^replaced with revised version +\\([^(]*\\)" nil t)
665 (setq date (match-string 1))))
666 (when (re-search-forward "^Title: \\([^\f]*\\)\nAuthors?: \\(.*\\)"
668 (setq subject (concat (match-string 1) subject))
669 (setq from (concat (match-string 2) " " from))))))
670 (while (and from (string-match "(\[^)\]*)" from))
671 (setq from (replace-match "" t t from)))
672 (insert "From: " (or from "unknown")
673 "\nSubject: " (or subject "(no subject)") "\n")
674 (if date (insert "Date: " date))))
676 (defun nndoc-nsmail-type-p ()
677 (when (looking-at "From - ")
680 (defun nndoc-outlook-article-begin ()
681 (prog1 (re-search-forward "From:\\|Received:" nil t)
682 (goto-char (match-beginning 0))))
684 (defun nndoc-outlook-type-p ()
685 ;; FIXME: Is JMF the magic of outlook mailbox? -- ShengHuo.
688 (defun nndoc-oe-dbx-type-p ()
689 (looking-at (string-as-multibyte "\317\255\022\376")))
691 (defun nndoc-read-little-endian ()
692 (+ (prog1 (char-after) (forward-char 1))
693 (lsh (prog1 (char-after) (forward-char 1)) 8)
694 (lsh (prog1 (char-after) (forward-char 1)) 16)
695 (lsh (prog1 (char-after) (forward-char 1)) 24)))
697 (defun nndoc-oe-dbx-decode-block ()
699 (nndoc-read-little-endian) ;; this address
700 (nndoc-read-little-endian) ;; next address offset
701 (nndoc-read-little-endian) ;; blocksize
702 (nndoc-read-little-endian))) ;; next address
704 (defun nndoc-oe-dbx-dissection ()
705 (let ((i 0) blk p tp)
706 (goto-char 60117) ;; 0x0000EAD4+1
709 (setq blk (nndoc-oe-dbx-decode-block)))
710 (while (and blk (> (car blk) 0) (or (zerop (nth 3 blk))
712 (push (list (incf i) p nil nil nil 0) nndoc-dissection-alist)
713 (while (and (> (car blk) 0) (> (nth 3 blk) p))
714 (goto-char (1+ (nth 3 blk)))
715 (setq blk (nndoc-oe-dbx-decode-block)))
716 (if (or (<= (car blk) p)
718 (not (zerop (nth 3 blk))))
720 (setq tp (+ (car blk) (nth 1 blk) 17))
721 (if (or (<= tp p) (>= tp (point-max)))
725 blk (nndoc-oe-dbx-decode-block)))))))
727 (defun nndoc-oe-dbx-generate-article (article &optional head)
728 (let ((entry (cdr (assq article nndoc-dissection-alist)))
729 (cur (current-buffer))
732 (with-current-buffer nndoc-current-buffer
734 (while (> p (point-min))
736 (setq blk (nndoc-oe-dbx-decode-block))
738 (with-current-buffer cur
739 (insert-buffer-substring nndoc-current-buffer p (+ p (nth 2 blk))))
740 (setq p (1+ (nth 3 blk)))))
742 (while (re-search-forward "\r$" nil t)
743 (delete-backward-char 1))
746 (when (search-forward "\n\n" nil t)
747 (setcar (cddddr entry) (count-lines (point) (point-max)))
748 (delete-region (1- (point)) (point-max))))
751 (defun nndoc-oe-dbx-generate-head (article)
752 (nndoc-oe-dbx-generate-article article 'head))
754 (defun nndoc-mail-in-mail-type-p ()
758 (while (re-search-forward "\n\n[-A-Za-z0-9]+:" nil t)
761 (while (looking-at "[ \t]\\|[-A-Za-z0-9]+:")
762 (if (looking-at "[-A-Za-z0-9]+:")
763 (setq found (1+ found)))
765 (if (and (> found 0) (looking-at "\n"))
769 (defun nndoc-mail-in-mail-article-begin ()
772 (while (re-search-forward "\n\n\\([-A-Za-z0-9]+:\\)" nil t)
774 (setq point (match-beginning 1))
776 (while (looking-at "[ \t]\\|[-A-Za-z0-9]+:")
777 (if (looking-at "[-A-Za-z0-9]+:")
778 (setq found (1+ found)))
780 (if (and (> found 0) (looking-at "\n"))
785 (deffoo nndoc-request-accept-article (group &optional server last)
789 ;;; Functions for dissecting the documents
792 (defun nndoc-search (regexp)
794 (re-search-forward regexp nil t)
795 (beginning-of-line)))
797 (defun nndoc-dissect-buffer ()
798 "Go through the document and partition it into heads/bodies/articles."
801 art-begin head-begin head-end body-begin body-end)
802 (setq nndoc-dissection-alist nil)
804 (set-buffer nndoc-current-buffer)
805 (goto-char (point-min))
806 ;; Remove blank lines.
807 (while (eq (following-char) ?\n)
809 (if nndoc-dissection-function
810 (funcall nndoc-dissection-function)
811 ;; Find the beginning of the file.
812 (when nndoc-file-begin
813 (nndoc-search nndoc-file-begin))
814 ;; Go through the file.
815 (while (if (and first nndoc-first-article)
816 (nndoc-search nndoc-first-article)
818 (goto-char art-begin)
819 (nndoc-article-begin)))
822 (cond (nndoc-head-begin-function
823 (funcall nndoc-head-begin-function))
825 (nndoc-search nndoc-head-begin)))
828 (looking-at nndoc-file-end)))
829 (goto-char (point-max))
830 (setq head-begin (point))
831 (nndoc-search (or nndoc-head-end "^$"))
832 (setq head-end (point))
833 (if nndoc-body-begin-function
834 (funcall nndoc-body-begin-function)
835 (nndoc-search (or nndoc-body-begin "^\n")))
836 (setq body-begin (point))
837 (or (and nndoc-body-end-function
838 (funcall nndoc-body-end-function))
840 (nndoc-search nndoc-body-end))
841 (and (nndoc-article-begin)
842 (setq art-begin (point)))
844 (goto-char (point-max))
846 (and (re-search-backward nndoc-file-end nil t)
847 (beginning-of-line)))))
848 (setq body-end (point))
849 (push (list (incf i) head-begin head-end body-begin body-end
850 (count-lines body-begin body-end))
851 nndoc-dissection-alist)))))))
853 (defun nndoc-article-begin ()
854 (if nndoc-article-begin-function
855 (funcall nndoc-article-begin-function)
857 (nndoc-search nndoc-article-begin))))
859 (defun nndoc-unquote-dashes ()
860 "Unquote quoted non-separators in digests."
861 (while (re-search-forward "^- -"nil t)
862 (replace-match "-" t t)))
864 ;; Against compiler warnings.
865 (defvar nndoc-mime-split-ordinal)
867 (defun nndoc-dissect-mime-parts ()
868 "Go through a MIME composite article and partition it into sub-articles.
869 When a MIME entity contains sub-entities, dissection produces one article for
870 the header of this entity, and one article per sub-entity."
871 (setq nndoc-dissection-alist nil
872 nndoc-mime-split-ordinal 0)
874 (set-buffer nndoc-current-buffer)
875 (nndoc-dissect-mime-parts-sub (point-min) (point-max) nil nil nil)))
877 (defun nndoc-dissect-mime-parts-sub (head-begin body-end article-insert
879 "Dissect an entity, within a composite MIME message.
880 The complete message or MIME entity extends from HEAD-BEGIN to BODY-END.
881 ARTICLE-INSERT should be added at beginning for generating a full article.
882 The string POSITION holds a dotted decimal representation of the article
883 position in the hierarchical structure, it is nil for the outer entity.
884 PARENT is the message-ID of the parent summary line, or nil for none."
885 (let ((case-fold-search t)
886 (message-id (nnmail-message-id))
887 head-end body-begin summary-insert message-rfc822 multipart-any
888 subject content-type type subtype boundary-regexp)
889 ;; Gracefully handle a missing body.
890 (goto-char head-begin)
891 (if (or (and (eq (char-after) ?\n) (or (forward-char 1) t))
892 (search-forward "\n\n" body-end t))
893 (setq head-end (1- (point))
895 (setq head-end body-end
896 body-begin body-end))
897 (narrow-to-region head-begin head-end)
898 ;; Save MIME attributes.
899 (goto-char head-begin)
900 (setq content-type (message-fetch-field "Content-Type"))
903 "^ *\\([^ \t\n/;]+\\)/\\([^ \t\n/;]+\\)" content-type)
904 (setq type (downcase (match-string 1 content-type))
905 subtype (downcase (match-string 2 content-type))
906 message-rfc822 (and (string= type "message")
907 (string= subtype "rfc822"))
908 multipart-any (string= type "multipart")))
909 (when (string-match ";[ \t\n]*name=\\([^ \t\n;]+\\)" content-type)
910 (setq subject (match-string 1 content-type)))
911 (when (string-match "boundary=\"?\\([^\"\n]*[^\" \t\n]\\)" content-type)
912 (setq boundary-regexp (concat "^--"
914 (match-string 1 content-type))
915 "\\(--\\)?[ \t]*\n"))))
917 (when (or multipart-any (not article-insert))
918 (setq subject (message-fetch-field "Subject"))))
922 ;; Prepare the article and summary inserts.
923 (unless article-insert
924 (setq article-insert (buffer-string)
925 head-end head-begin))
927 (unless (string-match "MIME-Version:" article-insert)
929 (concat article-insert "MIME-Version: 1.0\n")))
930 (setq summary-insert article-insert)
931 ;; - summary Subject.
933 (let ((line (concat "Subject: <" position
934 (and position multipart-any ".")
935 (and multipart-any "*")
936 (and (or position multipart-any) " ")
937 (cond ((string= subtype "plain") type)
938 ((string= subtype "basic") type)
944 (if (string-match "Subject:.*\n\\([ \t].*\n\\)*" summary-insert)
945 (replace-match line t t summary-insert)
946 (concat summary-insert line))))
947 ;; - summary Message-ID.
949 (let ((line (concat "Message-ID: " message-id "\n")))
950 (if (string-match "Message-ID:.*\n\\([ \t].*\n\\)*" summary-insert)
951 (replace-match line t t summary-insert)
952 (concat summary-insert line))))
953 ;; - summary References.
956 (let ((line (concat "References: " parent "\n")))
957 (if (string-match "References:.*\n\\([ \t].*\n\\)*"
959 (replace-match line t t summary-insert)
960 (concat summary-insert line)))))
961 ;; Generate dissection information for this entity.
962 (push (list (incf nndoc-mime-split-ordinal)
963 head-begin head-end body-begin body-end
964 (count-lines body-begin body-end)
965 article-insert summary-insert)
966 nndoc-dissection-alist)
967 ;; Recurse for all sub-entities, if any.
972 (nndoc-dissect-mime-parts-sub body-begin body-end nil
973 position message-id)))
974 ((and multipart-any boundary-regexp)
975 (let ((part-counter 0)
976 part-begin part-end eof-flag)
977 (while (string-match "\
978 ^\\(Lines\\|Content-\\(Type\\|Transfer-Encoding\\|Disposition\\)\\):.*\n\\([ \t].*\n\\)*"
980 (setq article-insert (replace-match "" t t article-insert)))
981 (let ((case-fold-search nil))
982 (goto-char body-begin)
983 (setq eof-flag (not (re-search-forward boundary-regexp body-end t)))
984 (while (not eof-flag)
985 (setq part-begin (point))
986 (cond ((re-search-forward boundary-regexp body-end t)
987 (or (not (match-string 1))
988 (string= (match-string 1) "")
991 (setq part-end (point))
993 (t (setq part-end body-end
996 (nndoc-dissect-mime-parts-sub
997 part-begin part-end article-insert
1000 (format "%d" (incf part-counter)))
1004 (defun nndoc-add-type (definition &optional position)
1005 "Add document DEFINITION to the list of nndoc document definitions.
1006 If POSITION is nil or `last', the definition will be added
1007 as the last checked definition, if t or `first', add as the
1008 first definition, and if any other symbol, add after that
1009 symbol in the alist."
1010 ;; First remove any old instances.
1011 (gnus-pull (car definition) nndoc-type-alist)
1012 ;; Then enter the new definition in the proper place.
1014 ((or (null position) (eq position 'last))
1015 (setq nndoc-type-alist (nconc nndoc-type-alist (list definition))))
1016 ((or (eq position t) (eq position 'first))
1017 (push definition nndoc-type-alist))
1019 (let ((list (memq (assq position nndoc-type-alist)
1022 (error "No such position: %s" position))
1023 (setcdr list (cons definition (cdr list)))))))
1027 ;;; nndoc.el ends here