1 ;;; nndoc.el --- single file access for Gnus
3 ;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
4 ;; 2004, 2005, 2006, 2007, 2008, 2009 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 3 of the License, or
15 ;; (at your option) any later version.
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. If not, see <http://www.gnu.org/licenses/>.
27 ;; For Outlook mail boxes format, see http://mbx2mbox.sourceforge.net/
37 (eval-when-compile (require 'cl))
41 (defvoo nndoc-article-type 'guess
43 One of `mbox', `babyl', `digest', `news', `rnews', `mmdf', `forward',
44 `rfc934', `rfc822-forward', `mime-parts', `standard-digest',
45 `slack-digest', `clari-briefs', `nsmail', `outlook', `oe-dbx',
46 `mailman', `exim-bounce', or `guess'.")
48 (defvoo nndoc-post-type 'mail
49 "*Whether the nndoc group is `mail' or `post'.")
51 (defvoo nndoc-open-document-hook 'nnheader-ms-strip-cr
52 "Hook run after opening a document.
53 The default function removes all trailing carriage returns
56 (defvar nndoc-type-alist
58 (article-begin . "^\^A\^A\^A\^A\n")
59 (body-end . "^\^A\^A\^A\^A\n"))
62 (head-begin . "^ ?\n")
66 (subtype digest guess))
68 (generate-head-function . nndoc-generate-mime-parts-head)
69 (article-transform-function . nndoc-transform-mime-parts))
71 (article-begin . "^From - "))
73 (article-begin . "^Path:"))
75 (article-begin . "^#! *rnews +\\([0-9]+\\) *\n")
76 (body-end-function . nndoc-rnews-body-end))
78 (article-begin-function . nndoc-mbox-article-begin)
79 (body-end-function . nndoc-mbox-body-end))
81 (article-begin . "\^_\^L *\n")
83 (body-begin-function . nndoc-babyl-body-begin)
84 (head-begin-function . nndoc-babyl-head-begin))
86 (article-begin . "^------ This is a copy of the message, including all the headers. ------\n\n")
87 (body-end-function . nndoc-exim-bounce-body-end-function))
89 (article-begin . "^--.*\n+")
91 (prepare-body-function . nndoc-unquote-dashes))
93 (article-begin . "^--__--__--\n\nMessage:")
94 (body-end . "^--__--__--$")
95 (prepare-body-function . nndoc-unquote-dashes))
97 (article-begin . "^ \\*")
98 (body-end . "^\t------*[ \t]^*\n^ \\*")
101 (generate-head-function . nndoc-generate-clari-briefs-head)
102 (article-transform-function . nndoc-transform-clari-briefs))
105 (first-article . ,(concat "^" (make-string 70 ?-) "\n *\n+"))
106 (article-begin . ,(concat "^\n" (make-string 30 ?-) "\n *\n+"))
107 (prepare-body-function . nndoc-unquote-dashes)
108 (body-end-function . nndoc-digest-body-end)
110 (body-begin . "^ *\n")
111 (file-end . "^End of .*digest.*[0-9].*\n\\*\\*\\|^End of.*Digest *$")
112 (subtype digest guess))
114 (article-begin . "^------------------------------*[\n \t]+")
116 (body-end-function . nndoc-digest-body-end)
117 (body-begin . "^ ?$")
118 (file-end . "^End of")
119 (prepare-body-function . nndoc-unquote-dashes)
120 (subtype digest guess))
122 (article-begin . "^\\\\\\\\\n")
123 (head-begin . "^\\(Paper.*:\\|arXiv:\\)")
124 (head-end . "\\(^\\\\\\\\.*\n\\|-----------------\\)")
126 (body-end . "\\(-------------------------------------------------\\|%-%-%-%-%-%-%-%-%-%-%-%-%-%-\\|%%--%%--%%--%%--%%--%%--%%--%%--\\|%%%---%%%---%%%---%%%---\\)")
127 (file-end . "\\(^Title: Recent Seminal\\|%%%---%%%---%%%---%%%---\\)")
128 (generate-head-function . nndoc-generate-lanl-gov-head)
129 (article-transform-function . nndoc-transform-lanl-gov-announce)
130 (subtype preprints guess))
132 (article-begin . "^\n+")
133 (body-end-function . nndoc-rfc822-forward-body-end-function)
134 (generate-head-function . nndoc-rfc822-forward-generate-head)
135 (generate-article-function . nndoc-rfc822-forward-generate-article))
137 (article-begin-function . nndoc-outlook-article-begin)
139 (oe-dbx ;; Outlook Express DBX format
140 (dissection-function . nndoc-oe-dbx-dissection)
141 (generate-head-function . nndoc-oe-dbx-generate-head)
142 (generate-article-function . nndoc-oe-dbx-generate-article))
144 (article-begin . "^-+ \\(Start of \\)?forwarded message.*\n+")
145 (body-end . "^-+ End \\(of \\)?forwarded message.*$")
146 (prepare-body-function . nndoc-unquote-dashes))
147 (mail-in-mail ;; Wild guess on mailer daemon's messages or others
148 (article-begin-function . nndoc-mail-in-mail-article-begin))
159 (defvar nndoc-binary-file-names ".[Dd][Bb][Xx]$"
160 "Regexp for binary nndoc file names.")
163 (defvoo nndoc-file-begin nil)
164 (defvoo nndoc-first-article nil)
165 (defvoo nndoc-article-begin nil)
166 (defvoo nndoc-head-begin nil)
167 (defvoo nndoc-head-end nil)
168 (defvoo nndoc-file-end nil)
169 (defvoo nndoc-body-begin nil)
170 (defvoo nndoc-body-end-function nil)
171 (defvoo nndoc-body-begin-function nil)
172 (defvoo nndoc-head-begin-function nil)
173 (defvoo nndoc-body-end nil)
174 ;; nndoc-dissection-alist is a list of sublists. Each sublist holds the
175 ;; following items. ARTICLE acts as the association key and is an ordinal
176 ;; starting at 1. HEAD-BEGIN [0], HEAD-END [1], BODY-BEGIN [2] and BODY-END
177 ;; [3] are positions in the `nndoc' buffer. LINE-COUNT [4] is a count of
178 ;; lines in the body. For MIME dissections only, ARTICLE-INSERT [5] and
179 ;; SUMMARY-INSERT [6] give headers to insert for full article or summary line
180 ;; generation, respectively. Other headers usually follow directly from the
181 ;; buffer. Value `nil' means no insert.
182 (defvoo nndoc-dissection-alist nil)
183 (defvoo nndoc-prepare-body-function nil)
184 (defvoo nndoc-generate-head-function nil)
185 (defvoo nndoc-article-transform-function nil)
186 (defvoo nndoc-article-begin-function nil)
187 (defvoo nndoc-generate-article-function nil)
188 (defvoo nndoc-dissection-function nil)
190 (defvoo nndoc-status-string "")
191 (defvoo nndoc-group-alist nil)
192 (defvoo nndoc-current-buffer nil
193 "Current nndoc news buffer.")
194 (defvoo nndoc-address nil)
196 (defconst nndoc-version "nndoc 1.0"
201 ;;; Interface functions
203 (nnoo-define-basics nndoc)
205 (deffoo nndoc-retrieve-headers (articles &optional newsgroup server fetch-old)
206 (when (nndoc-possibly-change-buffer newsgroup server)
208 (set-buffer nntp-server-buffer)
211 (if (stringp (car articles))
214 (when (setq entry (cdr (assq (setq article (pop articles))
215 nndoc-dissection-alist)))
216 (insert (format "221 %d Article retrieved.\n" article))
217 (if nndoc-generate-head-function
218 (funcall nndoc-generate-head-function article)
219 (insert-buffer-substring
220 nndoc-current-buffer (car entry) (nth 1 entry)))
221 (goto-char (point-max))
222 (unless (eq (char-after (1- (point))) ?\n)
224 (insert (format "Lines: %d\n" (nth 4 entry)))
227 (nnheader-fold-continuation-lines)
230 (deffoo nndoc-request-article (article &optional newsgroup server buffer)
231 (nndoc-possibly-change-buffer newsgroup server)
233 (let ((buffer (or buffer nntp-server-buffer))
234 (entry (cdr (assq article nndoc-dissection-alist)))
240 ((stringp article) nil)
241 (nndoc-generate-article-function
242 (funcall nndoc-generate-article-function article))
244 (insert-buffer-substring
245 nndoc-current-buffer (car entry) (nth 1 entry))
248 (insert-buffer-substring
249 nndoc-current-buffer (nth 2 entry) (nth 3 entry))
251 (when nndoc-prepare-body-function
252 (funcall nndoc-prepare-body-function))
253 (when nndoc-article-transform-function
254 (funcall nndoc-article-transform-function article))
257 (deffoo nndoc-request-group (group &optional server dont-check)
261 ((not (nndoc-possibly-change-buffer group server))
262 (nnheader-report 'nndoc "No such file or buffer: %s"
265 (nnheader-report 'nndoc "Selected group %s" group)
267 ((zerop (setq number (length nndoc-dissection-alist)))
268 (nndoc-close-group group)
269 (nnheader-report 'nndoc "No articles in group %s" group))
271 (nnheader-insert "211 %d %d %d %s\n" number 1 number group)))))
273 (deffoo nndoc-request-type (group &optional article)
274 (cond ((not article) 'unknown)
275 (nndoc-post-type nndoc-post-type)
278 (deffoo nndoc-close-group (group &optional server)
279 (nndoc-possibly-change-buffer group server)
280 (and nndoc-current-buffer
281 (buffer-name nndoc-current-buffer)
282 (kill-buffer nndoc-current-buffer))
283 (setq nndoc-group-alist (delq (assoc group nndoc-group-alist)
285 (setq nndoc-current-buffer nil)
286 (nnoo-close-server 'nndoc server)
287 (setq nndoc-dissection-alist nil)
290 (deffoo nndoc-request-list (&optional server)
293 (deffoo nndoc-request-newgroups (date &optional server)
296 (deffoo nndoc-request-list-newsgroups (&optional server)
300 ;;; Internal functions.
302 (defun nndoc-possibly-change-buffer (group source)
305 ;; The current buffer is this group's buffer.
306 ((and nndoc-current-buffer
307 (buffer-name nndoc-current-buffer)
308 (eq nndoc-current-buffer
309 (setq buf (cdr (assoc group nndoc-group-alist))))))
310 ;; We change buffers by taking an old from the group alist.
311 ;; `source' is either a string (a file name) or a buffer object.
313 (setq nndoc-current-buffer buf))
314 ;; It's a totally new group.
315 ((or (and (bufferp nndoc-address)
316 (buffer-name nndoc-address))
317 (and (stringp nndoc-address)
318 (file-exists-p nndoc-address)
319 (not (file-directory-p nndoc-address))))
320 (push (cons group (setq nndoc-current-buffer
322 (concat " *nndoc " group "*"))))
324 (setq nndoc-dissection-alist nil)
326 (set-buffer nndoc-current-buffer)
328 (if (and (stringp nndoc-address)
329 (string-match nndoc-binary-file-names nndoc-address))
330 (let ((coding-system-for-read 'binary))
331 (mm-insert-file-contents nndoc-address))
332 (if (stringp nndoc-address)
333 (nnheader-insert-file-contents nndoc-address)
334 (insert-buffer-substring nndoc-address))
335 (run-hooks 'nndoc-open-document-hook)))))
336 ;; Initialize the nndoc structures according to this new document.
337 (when (and nndoc-current-buffer
338 (not nndoc-dissection-alist))
340 (set-buffer nndoc-current-buffer)
342 (if (eq nndoc-article-type 'mime-parts)
343 (nndoc-dissect-mime-parts)
344 (nndoc-dissect-buffer))))
345 (unless nndoc-current-buffer
346 (nndoc-close-server))
347 ;; Return whether we managed to select a file.
348 nndoc-current-buffer))
351 ;;; Deciding what document type we have
354 (defun nndoc-set-delims ()
355 "Set the nndoc delimiter variables according to the type of the document."
356 (let ((vars '(nndoc-file-begin
358 nndoc-article-begin-function
359 nndoc-head-begin nndoc-head-end
360 nndoc-file-end nndoc-article-begin
361 nndoc-body-begin nndoc-body-end-function nndoc-body-end
362 nndoc-prepare-body-function nndoc-article-transform-function
363 nndoc-generate-head-function nndoc-body-begin-function
364 nndoc-head-begin-function
365 nndoc-generate-article-function
366 nndoc-dissection-function)))
368 (set (pop vars) nil)))
370 ;; Guess away until we find the real file type.
371 (while (assq 'guess (setq defs (cdr (assq nndoc-article-type
373 (setq nndoc-article-type (nndoc-guess-type nndoc-article-type)))
374 ;; Set the nndoc variables.
376 (set (intern (format "nndoc-%s" (caar defs)))
379 (defun nndoc-guess-type (subtype)
380 (let ((alist nndoc-type-alist)
381 results result entry)
382 (while (and (not result)
383 (setq entry (pop alist)))
384 (when (memq subtype (or (cdr (assq 'subtype entry)) '(guess)))
385 (goto-char (point-min))
386 ;; Remove blank lines.
387 (while (eq (following-char) ?\n)
389 (when (numberp (setq result (funcall (intern
390 (format "nndoc-%s-type-p"
392 (push (cons result entry) results)
394 (unless (or result results)
395 (error "Document is not of any recognized type"))
398 (cadar (last (sort results 'car-less-than-car))))))
401 ;;; Built-in type predicates and functions
404 (defun nndoc-mbox-type-p ()
405 (when (looking-at message-unix-mail-delimiter)
408 (defun nndoc-mbox-article-begin ()
409 (when (re-search-forward (concat "^" message-unix-mail-delimiter) nil t)
410 (goto-char (match-beginning 0))))
412 (defun nndoc-mbox-body-end ()
417 (and (re-search-backward
418 (concat "^" message-unix-mail-delimiter) nil t)
420 (search-forward "\n\n" beg t)
422 "^Content-Length:[ \t]*\\([0-9]+\\) *$" end t)
423 (setq len (string-to-number (match-string 1)))
424 (search-forward "\n\n" beg t)
425 (unless (= (setq len (+ (point) len)) (point-max))
426 (and (< len (point-max))
428 (looking-at message-unix-mail-delimiter)))))
431 (defun nndoc-mmdf-type-p ()
432 (when (looking-at "\^A\^A\^A\^A$")
435 (defun nndoc-news-type-p ()
436 (when (looking-at "^Path:.*\n")
439 (defun nndoc-rnews-type-p ()
440 (when (looking-at "#! *rnews")
443 (defun nndoc-rnews-body-end ()
444 (and (re-search-backward nndoc-article-begin nil t)
446 (goto-char (+ (point) (string-to-number (match-string 1))))))
448 (defun nndoc-babyl-type-p ()
449 (when (re-search-forward "\^_\^L *\n" nil t)
452 (defun nndoc-babyl-body-begin ()
453 (re-search-forward "^\n" nil t)
454 (when (looking-at "\\*\\*\\* EOOH \\*\\*\\*")
455 (let ((next (or (save-excursion
456 (re-search-forward nndoc-article-begin nil t))
458 (unless (re-search-forward "^\n" next t)
462 (forward-line -1)))))
464 (defun nndoc-babyl-head-begin ()
465 (when (re-search-forward "^[0-9].*\n" nil t)
466 (when (looking-at "\\*\\*\\* EOOH \\*\\*\\*")
470 (defun nndoc-forward-type-p ()
471 (when (and (re-search-forward "^-+ \\(Start of \\)?forwarded message.*\n+"
473 (looking-at "[\r\n]*[a-zA-Z][a-zA-Z0-9-]*:\\|^>?From "))
476 (defun nndoc-rfc934-type-p ()
477 (when (and (re-search-forward "^-+ Start of forwarded.*\n+" nil t)
478 (not (re-search-forward "^Subject:.*digest" nil t))
479 (not (re-search-backward "^From:" nil t 2))
480 (not (re-search-forward "^From:" nil t 2)))
483 (defun nndoc-mailman-type-p ()
484 (when (re-search-forward "^--__--__--\n+" nil t)
487 (defun nndoc-rfc822-forward-type-p ()
489 (message-narrow-to-head)
490 (when (re-search-forward "^Content-Type: *message/rfc822" nil t)
493 (defun nndoc-rfc822-forward-body-end-function ()
494 (goto-char (point-max)))
496 (defun nndoc-rfc822-forward-generate-article (article &optional head)
497 (let ((entry (cdr (assq article nndoc-dissection-alist)))
500 (with-current-buffer nndoc-current-buffer
502 (message-narrow-to-head)
503 (setq encoding (message-fetch-field "content-transfer-encoding"))))
504 (insert-buffer-substring nndoc-current-buffer (car entry) (nth 3 entry))
507 (narrow-to-region begin (point-max))
508 (mm-decode-content-transfer-encoding
509 (intern (downcase (mail-header-strip encoding))))))
512 (when (search-forward "\n\n" nil t)
513 (delete-region (1- (point)) (point-max)))))
516 (defun nndoc-rfc822-forward-generate-head (article)
517 (nndoc-rfc822-forward-generate-article article 'head))
519 (defun nndoc-mime-parts-type-p ()
520 (let ((case-fold-search t)
521 (limit (search-forward "\n\n" nil t)))
522 (goto-char (point-min))
526 ^Content-Type:[ \t]*multipart/[a-z]+ *; *\\(\\(\n[ \t]\\)?.*;\\)*"
527 "\\(\n[ \t]\\)?[ \t]*boundary=\"?[^\"\n]*[^\" \t\n]")
531 (defun nndoc-transform-mime-parts (article)
532 (let* ((entry (cdr (assq article nndoc-dissection-alist)))
533 (headers (nth 5 entry)))
535 (goto-char (point-min))
538 (defun nndoc-generate-mime-parts-head (article)
539 (let* ((entry (cdr (assq article nndoc-dissection-alist)))
540 (headers (nth 6 entry)))
542 (narrow-to-region (point) (point))
543 (insert-buffer-substring
544 nndoc-current-buffer (car entry) (nth 1 entry))
545 (goto-char (point-max)))
549 (defun nndoc-clari-briefs-type-p ()
550 (when (let ((case-fold-search nil))
551 (re-search-forward "^\t[^a-z]+ ([^a-z]+) --" nil t))
554 (defun nndoc-transform-clari-briefs (article)
555 (goto-char (point-min))
556 (when (looking-at " *\\*\\(.*\\)\n")
557 (replace-match "" t t))
558 (nndoc-generate-clari-briefs-head article))
560 (defun nndoc-generate-clari-briefs-head (article)
561 (let ((entry (cdr (assq article nndoc-dissection-alist)))
564 (set-buffer nndoc-current-buffer)
566 (narrow-to-region (car entry) (nth 3 entry))
567 (goto-char (point-min))
568 (when (looking-at " *\\*\\(.*\\)$")
569 (setq subject (match-string 1))
570 (when (string-match "[ \t]+$" subject)
571 (setq subject (substring subject 0 (match-beginning 0)))))
573 (let ((case-fold-search nil))
575 "^\t\\([^a-z]+\\(,[^(]+\\)? ([^a-z]+)\\) --" nil t))
576 (setq from (match-string 1)))))
577 (insert "From: " "clari@clari.net (" (or from "unknown") ")"
578 "\nSubject: " (or subject "(no subject)") "\n")))
580 (defun nndoc-exim-bounce-type-p ()
581 (and (re-search-forward "^------ This is a copy of the message, including all the headers. ------" nil t)
584 (defun nndoc-exim-bounce-body-end-function ()
585 (goto-char (point-max)))
588 (defun nndoc-mime-digest-type-p ()
589 (let ((case-fold-search t)
590 boundary-id b-delimiter entry)
593 (concat "^Content-Type: *multipart/digest;[ \t\n]*[ \t]"
594 "boundary=\"?\\([^\"\n]*[^\" \t\n]\\)")
597 (setq boundary-id (match-string 1)
598 b-delimiter (concat "\n--" boundary-id "[ \t]*$"))
599 (setq entry (assq 'mime-digest nndoc-type-alist))
602 (cons 'head-begin "^ ?\n")
603 (cons 'head-end "^ ?$")
604 (cons 'body-begin "^ ?\n")
605 (cons 'article-begin b-delimiter)
606 (cons 'body-end-function 'nndoc-digest-body-end)
607 (cons 'file-end (concat "^--" boundary-id "--[ \t]*$"))))
610 (defun nndoc-standard-digest-type-p ()
611 (when (and (re-search-forward (concat "^" (make-string 70 ?-) "\n\n") nil t)
613 (concat "\n\n" (make-string 30 ?-) "\n\n") nil t))
616 (defun nndoc-digest-body-end ()
617 (and (re-search-forward nndoc-article-begin nil t)
618 (goto-char (match-beginning 0))))
620 (defun nndoc-slack-digest-type-p ()
623 (defun nndoc-lanl-gov-announce-type-p ()
624 (when (let ((case-fold-search nil))
625 (re-search-forward "^\\\\\\\\\n\\(Paper\\( (\\*cross-listing\\*)\\)?: [a-zA-Z-\\.]+/[0-9]+\\|arXiv:\\)" nil t))
628 (defun nndoc-transform-lanl-gov-announce (article)
629 (let ((case-fold-search nil))
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")))
645 (when (re-search-forward "^arXiv:" nil t)
646 (replace-match "Paper: arXiv:" t nil))))
648 (defun nndoc-generate-lanl-gov-head (article)
649 (let ((entry (cdr (assq article nndoc-dissection-alist)))
650 (from "<no address given>")
653 (set-buffer nndoc-current-buffer)
655 (narrow-to-region (car entry) (nth 1 entry))
656 (goto-char (point-min))
657 (when (looking-at "^\\(Paper.*: \\|arXiv:\\)\\([0-9a-zA-Z-\\./]+\\)")
658 (setq subject (concat " (" (match-string 2) ")"))
659 (when (re-search-forward "^From: \\(.*\\)" nil t)
660 (setq from (concat "<"
661 (cadr (funcall gnus-extract-address-components
662 (match-string 1))) ">")))
663 (if (re-search-forward "^Date: +\\([^(]*\\)" nil t)
664 (setq date (match-string 1))
665 (when (re-search-forward "^replaced with revised version +\\([^(]*\\)" nil t)
666 (setq date (match-string 1))))
667 (when (re-search-forward "^Title: \\([^\f]*\\)\nAuthors?: \\(.*\\)"
669 (setq subject (concat (match-string 1) subject))
670 (setq from (concat (match-string 2) " " from))))))
671 (while (and from (string-match "(\[^)\]*)" from))
672 (setq from (replace-match "" t t from)))
673 (insert "From: " (or from "unknown")
674 "\nSubject: " (or subject "(no subject)") "\n")
675 (if date (insert "Date: " date))))
677 (defun nndoc-nsmail-type-p ()
678 (when (looking-at "From - ")
681 (defun nndoc-outlook-article-begin ()
682 (prog1 (re-search-forward "From:\\|Received:" nil t)
683 (goto-char (match-beginning 0))))
685 (defun nndoc-outlook-type-p ()
686 ;; FIXME: Is JMF the magic of outlook mailbox? -- ShengHuo.
689 (defun nndoc-oe-dbx-type-p ()
690 (looking-at (mm-string-to-multibyte "\317\255\022\376")))
692 (defun nndoc-read-little-endian ()
693 (+ (prog1 (char-after) (forward-char 1))
694 (lsh (prog1 (char-after) (forward-char 1)) 8)
695 (lsh (prog1 (char-after) (forward-char 1)) 16)
696 (lsh (prog1 (char-after) (forward-char 1)) 24)))
698 (defun nndoc-oe-dbx-decode-block ()
700 (nndoc-read-little-endian) ;; this address
701 (nndoc-read-little-endian) ;; next address offset
702 (nndoc-read-little-endian) ;; blocksize
703 (nndoc-read-little-endian))) ;; next address
705 (defun nndoc-oe-dbx-dissection ()
706 (let ((i 0) blk p tp)
707 (goto-char 60117) ;; 0x0000EAD4+1
710 (setq blk (nndoc-oe-dbx-decode-block)))
711 (while (and blk (> (car blk) 0) (or (zerop (nth 3 blk))
713 (push (list (incf i) p nil nil nil 0) nndoc-dissection-alist)
714 (while (and (> (car blk) 0) (> (nth 3 blk) p))
715 (goto-char (1+ (nth 3 blk)))
716 (setq blk (nndoc-oe-dbx-decode-block)))
717 (if (or (<= (car blk) p)
719 (not (zerop (nth 3 blk))))
721 (setq tp (+ (car blk) (nth 1 blk) 17))
722 (if (or (<= tp p) (>= tp (point-max)))
726 blk (nndoc-oe-dbx-decode-block)))))))
728 (defun nndoc-oe-dbx-generate-article (article &optional head)
729 (let ((entry (cdr (assq article nndoc-dissection-alist)))
730 (cur (current-buffer))
733 (with-current-buffer nndoc-current-buffer
735 (while (> p (point-min))
737 (setq blk (nndoc-oe-dbx-decode-block))
739 (with-current-buffer cur
740 (insert-buffer-substring nndoc-current-buffer p (+ p (nth 2 blk))))
741 (setq p (1+ (nth 3 blk)))))
743 (while (re-search-forward "\r$" nil t)
744 (delete-backward-char 1))
747 (when (search-forward "\n\n" nil t)
748 (setcar (cddddr entry) (count-lines (point) (point-max)))
749 (delete-region (1- (point)) (point-max))))
752 (defun nndoc-oe-dbx-generate-head (article)
753 (nndoc-oe-dbx-generate-article article 'head))
755 (defun nndoc-mail-in-mail-type-p ()
759 (while (re-search-forward "\n\n[-A-Za-z0-9]+:" nil t)
762 (while (looking-at "[ \t]\\|[-A-Za-z0-9]+:")
763 (if (looking-at "[-A-Za-z0-9]+:")
764 (setq found (1+ found)))
766 (if (and (> found 0) (looking-at "\n"))
770 (defun nndoc-mail-in-mail-article-begin ()
773 (while (re-search-forward "\n\n\\([-A-Za-z0-9]+:\\)" nil t)
775 (setq point (match-beginning 1))
777 (while (looking-at "[ \t]\\|[-A-Za-z0-9]+:")
778 (if (looking-at "[-A-Za-z0-9]+:")
779 (setq found (1+ found)))
781 (if (and (> found 0) (looking-at "\n"))
786 (deffoo nndoc-request-accept-article (group &optional server last)
790 ;;; Functions for dissecting the documents
793 (defun nndoc-search (regexp)
795 (re-search-forward regexp nil t)
796 (beginning-of-line)))
798 (defun nndoc-dissect-buffer ()
799 "Go through the document and partition it into heads/bodies/articles."
802 art-begin head-begin head-end body-begin body-end)
803 (setq nndoc-dissection-alist nil)
805 (set-buffer nndoc-current-buffer)
806 (goto-char (point-min))
807 ;; Remove blank lines.
808 (while (eq (following-char) ?\n)
810 (if nndoc-dissection-function
811 (funcall nndoc-dissection-function)
812 ;; Find the beginning of the file.
813 (when nndoc-file-begin
814 (nndoc-search nndoc-file-begin))
815 ;; Go through the file.
816 (while (if (and first nndoc-first-article)
817 (nndoc-search nndoc-first-article)
819 (goto-char art-begin)
820 (nndoc-article-begin)))
823 (cond (nndoc-head-begin-function
824 (funcall nndoc-head-begin-function))
826 (nndoc-search nndoc-head-begin)))
829 (looking-at nndoc-file-end)))
830 (goto-char (point-max))
831 (setq head-begin (point))
832 (nndoc-search (or nndoc-head-end "^$"))
833 (setq head-end (point))
834 (if nndoc-body-begin-function
835 (funcall nndoc-body-begin-function)
836 (nndoc-search (or nndoc-body-begin "^\n")))
837 (setq body-begin (point))
838 (or (and nndoc-body-end-function
839 (funcall nndoc-body-end-function))
841 (nndoc-search nndoc-body-end))
842 (and (nndoc-article-begin)
843 (setq art-begin (point)))
845 (goto-char (point-max))
847 (and (re-search-backward nndoc-file-end nil t)
848 (beginning-of-line)))))
849 (setq body-end (point))
850 (push (list (incf i) head-begin head-end body-begin body-end
851 (count-lines body-begin body-end))
852 nndoc-dissection-alist)))))))
854 (defun nndoc-article-begin ()
855 (if nndoc-article-begin-function
856 (funcall nndoc-article-begin-function)
858 (nndoc-search nndoc-article-begin))))
860 (defun nndoc-unquote-dashes ()
861 "Unquote quoted non-separators in digests."
862 (while (re-search-forward "^- -"nil t)
863 (replace-match "-" t t)))
865 ;; Against compiler warnings.
866 (defvar nndoc-mime-split-ordinal)
868 (defun nndoc-dissect-mime-parts ()
869 "Go through a MIME composite article and partition it into sub-articles.
870 When a MIME entity contains sub-entities, dissection produces one article for
871 the header of this entity, and one article per sub-entity."
872 (setq nndoc-dissection-alist nil
873 nndoc-mime-split-ordinal 0)
875 (set-buffer nndoc-current-buffer)
876 (nndoc-dissect-mime-parts-sub (point-min) (point-max) nil nil nil)))
878 (defun nndoc-dissect-mime-parts-sub (head-begin body-end article-insert
880 "Dissect an entity, within a composite MIME message.
881 The complete message or MIME entity extends from HEAD-BEGIN to BODY-END.
882 ARTICLE-INSERT should be added at beginning for generating a full article.
883 The string POSITION holds a dotted decimal representation of the article
884 position in the hierarchical structure, it is nil for the outer entity.
885 PARENT is the message-ID of the parent summary line, or nil for none."
886 (let ((case-fold-search t)
887 (message-id (nnmail-message-id))
888 head-end body-begin summary-insert message-rfc822 multipart-any
889 subject content-type type subtype boundary-regexp)
890 ;; Gracefully handle a missing body.
891 (goto-char head-begin)
892 (if (or (and (eq (char-after) ?\n) (or (forward-char 1) t))
893 (search-forward "\n\n" body-end t))
894 (setq head-end (1- (point))
896 (setq head-end body-end
897 body-begin body-end))
898 (narrow-to-region head-begin head-end)
899 ;; Save MIME attributes.
900 (goto-char head-begin)
901 (setq content-type (message-fetch-field "Content-Type"))
904 "^ *\\([^ \t\n/;]+\\)/\\([^ \t\n/;]+\\)" content-type)
905 (setq type (downcase (match-string 1 content-type))
906 subtype (downcase (match-string 2 content-type))
907 message-rfc822 (and (string= type "message")
908 (string= subtype "rfc822"))
909 multipart-any (string= type "multipart")))
910 (when (string-match ";[ \t\n]*name=\\([^ \t\n;]+\\)" content-type)
911 (setq subject (match-string 1 content-type)))
912 (when (string-match "boundary=\"?\\([^\"\n]*[^\" \t\n]\\)" content-type)
913 (setq boundary-regexp (concat "^--"
915 (match-string 1 content-type))
916 "\\(--\\)?[ \t]*\n"))))
918 (when (or multipart-any (not article-insert))
919 (setq subject (message-fetch-field "Subject"))))
923 ;; Prepare the article and summary inserts.
924 (unless article-insert
925 (setq article-insert (buffer-string)
926 head-end head-begin))
928 (unless (string-match "MIME-Version:" article-insert)
930 (concat article-insert "MIME-Version: 1.0\n")))
931 (setq summary-insert article-insert)
932 ;; - summary Subject.
934 (let ((line (concat "Subject: <" position
935 (and position multipart-any ".")
936 (and multipart-any "*")
937 (and (or position multipart-any) " ")
938 (cond ((string= subtype "plain") type)
939 ((string= subtype "basic") type)
945 (if (string-match "Subject:.*\n\\([ \t].*\n\\)*" summary-insert)
946 (replace-match line t t summary-insert)
947 (concat summary-insert line))))
948 ;; - summary Message-ID.
950 (let ((line (concat "Message-ID: " message-id "\n")))
951 (if (string-match "Message-ID:.*\n\\([ \t].*\n\\)*" summary-insert)
952 (replace-match line t t summary-insert)
953 (concat summary-insert line))))
954 ;; - summary References.
957 (let ((line (concat "References: " parent "\n")))
958 (if (string-match "References:.*\n\\([ \t].*\n\\)*"
960 (replace-match line t t summary-insert)
961 (concat summary-insert line)))))
962 ;; Generate dissection information for this entity.
963 (push (list (incf nndoc-mime-split-ordinal)
964 head-begin head-end body-begin body-end
965 (count-lines body-begin body-end)
966 article-insert summary-insert)
967 nndoc-dissection-alist)
968 ;; Recurse for all sub-entities, if any.
973 (nndoc-dissect-mime-parts-sub body-begin body-end nil
974 position message-id)))
975 ((and multipart-any boundary-regexp)
976 (let ((part-counter 0)
977 part-begin part-end eof-flag)
978 (while (string-match "\
979 ^\\(Lines\\|Content-\\(Type\\|Transfer-Encoding\\|Disposition\\)\\):.*\n\\([ \t].*\n\\)*"
981 (setq article-insert (replace-match "" t t article-insert)))
982 (let ((case-fold-search nil))
983 (goto-char body-begin)
984 (setq eof-flag (not (re-search-forward boundary-regexp body-end t)))
985 (while (not eof-flag)
986 (setq part-begin (point))
987 (cond ((re-search-forward boundary-regexp body-end t)
988 (or (not (match-string 1))
989 (string= (match-string 1) "")
992 (setq part-end (point))
994 (t (setq part-end body-end
997 (nndoc-dissect-mime-parts-sub
998 part-begin part-end article-insert
1001 (format "%d" (incf part-counter)))
1005 (defun nndoc-add-type (definition &optional position)
1006 "Add document DEFINITION to the list of nndoc document definitions.
1007 If POSITION is nil or `last', the definition will be added
1008 as the last checked definition, if t or `first', add as the
1009 first definition, and if any other symbol, add after that
1010 symbol in the alist."
1011 ;; First remove any old instances.
1012 (gnus-pull (car definition) nndoc-type-alist)
1013 ;; Then enter the new definition in the proper place.
1015 ((or (null position) (eq position 'last))
1016 (setq nndoc-type-alist (nconc nndoc-type-alist (list definition))))
1017 ((or (eq position t) (eq position 'first))
1018 (push definition nndoc-type-alist))
1020 (let ((list (memq (assq position nndoc-type-alist)
1023 (error "No such position: %s" position))
1024 (setcdr list (cons definition (cdr list)))))))
1028 ;; arch-tag: f5c2970e-0387-47ac-a0b3-6cc317dffabe
1029 ;;; nndoc.el ends here